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[ar7] refresh patches and remove trailing whitespaces
[openwrt.git] / package / uboot-lantiq / patches / 300-httpd.patch
1 --- a/common/cmd_net.c
2 +++ b/common/cmd_net.c
3 @@ -43,6 +43,18 @@ U_BOOT_CMD(
4 "[loadAddress] [[hostIPaddr:]bootfilename]"
5 );
6
7 +#if defined(CONFIG_CMD_HTTPD)
8 +int do_httpd (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
9 +{
10 + return NetLoopHttpd();
11 +}
12 +
13 +U_BOOT_CMD(
14 + httpd, 1, 1, do_httpd,
15 + "httpd\t- start webserver", ""
16 +);
17 +#endif
18 +
19 int do_tftpb (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
20 {
21 return netboot_common (TFTP, cmdtp, argc, argv);
22 --- /dev/null
23 +++ b/include/httpd.h
24 @@ -0,0 +1,17 @@
25 +#ifndef _UIP_HTTPD_H__
26 +#define _UIP_HTTPD_H__
27 +
28 +void HttpdStart (void);
29 +void HttpdHandler (void);
30 +
31 +/* board specific implementation */
32 +extern int do_http_upgrade(const unsigned char *data, const ulong size);
33 +
34 +#define HTTP_PROGRESS_START 0
35 +#define HTTP_PROGRESS_TIMEOUT 1
36 +#define HTTP_PROGRESS_UPLOAD_READY 2
37 +#define HTTP_PROGRESS_UGRADE_READY 3
38 +#define HTTP_PROGRESS_UGRADE_FAILED 4
39 +extern int do_http_progress(const int state);
40 +
41 +#endif
42 --- a/include/net.h
43 +++ b/include/net.h
44 @@ -383,7 +383,8 @@ extern int NetTimeOffset; /* offset ti
45
46 /* Initialize the network adapter */
47 extern int NetLoop(proto_t);
48 -
49 +extern int NetLoopHttpd(void);
50 +extern void NetSendHttpd(void);
51 /* Shutdown adapters and cleanup */
52 extern void NetStop(void);
53
54 --- a/net/Makefile
55 +++ b/net/Makefile
56 @@ -26,6 +26,10 @@ include $(TOPDIR)/config.mk
57 # CFLAGS += -DDEBUG
58
59 LIB = $(obj)libnet.a
60 +UIPDIR = uip-0.9
61 +RSADIR = uip-0.9
62 +$(shell mkdir -p $(obj)$(UIPDIR))
63 +$(shell mkdir -p $(obj)$(RSADIR))
64
65 COBJS-$(CONFIG_CMD_NET) += bootp.o
66 COBJS-$(CONFIG_CMD_DNS) += dns.o
67 @@ -36,6 +40,9 @@ COBJS-$(CONFIG_CMD_NET) += rarp.o
68 COBJS-$(CONFIG_CMD_SNTP) += sntp.o
69 COBJS-$(CONFIG_CMD_NET) += tftp.o
70
71 +COBJS-$(CONFIG_CMD_HTTPD) += httpd.o $(UIPDIR)/fs.o $(UIPDIR)/httpd.o $(UIPDIR)/uip_arp.o $(UIPDIR)/uip_arch.o $(UIPDIR)/uip.o
72 +COBJS-$(CONFIG_CMD_RSA) += $(RSADIR)/bigint.o $(RSADIR)/base64.o $(RSADIR)/rmd160.o $(RSADIR)/rsa.o
73 +
74 COBJS := $(COBJS-y)
75 SRCS := $(COBJS:.o=.c)
76 OBJS := $(addprefix $(obj),$(COBJS))
77 --- /dev/null
78 +++ b/net/httpd.c
79 @@ -0,0 +1,52 @@
80 +/*
81 + * Copyright 1994, 1995, 2000 Neil Russell.
82 + * (See License)
83 + * Copyright 2000, 2001 DENX Software Engineering, Wolfgang Denk, wd@denx.de
84 + */
85 +
86 +#include <common.h>
87 +#include <command.h>
88 +#include <net.h>
89 +#include "uip-0.9/uipopt.h"
90 +#include "uip-0.9/uip.h"
91 +#include "uip-0.9/uip_arp.h"
92 +
93 +
94 +#if defined(CONFIG_CMD_HTTPD)
95 +
96 +#define TIMEOUT 5
97 +
98 +static int arptimer = 0;
99 +
100 +void
101 +HttpdHandler (void)
102 +{
103 + int i;
104 + for(i = 0; i < UIP_CONNS; i++) {
105 + uip_periodic(i);
106 + if(uip_len > 0) {
107 + uip_arp_out();
108 + NetSendHttpd();
109 + }
110 + }
111 + if(++arptimer == 20) {
112 + uip_arp_timer();
113 + arptimer = 0;
114 + }
115 +}
116 +
117 +static void
118 +HttpdTimeout (void)
119 +{
120 + puts ("T ");
121 + NetSetTimeout (TIMEOUT * 1000, HttpdTimeout);
122 +}
123 +
124 +void
125 +HttpdStart (void)
126 +{
127 + uip_init();
128 + httpd_init();
129 +}
130 +
131 +#endif
132 --- a/net/net.c
133 +++ b/net/net.c
134 @@ -95,6 +95,19 @@
135 #if defined(CONFIG_CMD_DNS)
136 #include "dns.h"
137 #endif
138 +#if defined(CONFIG_CMD_HTTPD)
139 +#include "httpd.h"
140 +#include "uip-0.9/uipopt.h"
141 +#include "uip-0.9/uip.h"
142 +#include "uip-0.9/uip_arp.h"
143 +static int https_running = 0;
144 +int httpd_upload_complete = 0;
145 +unsigned char *httpd_upload_data = 0;
146 +extern int upload_running;
147 +void NetReceiveHttpd(volatile uchar * inpkt, int len);
148 +void NetSendHttpd(void);
149 +extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
150 +#endif
151
152 DECLARE_GLOBAL_DATA_PTR;
153
154 @@ -1308,6 +1321,13 @@ NetReceive(volatile uchar * inpkt, int l
155
156 debug("packet received\n");
157
158 +#if defined(CONFIG_CMD_HTTPD)
159 + if(https_running) {
160 + NetReceiveHttpd(inpkt, len);
161 + return;
162 + }
163 +#endif
164 +
165 NetRxPacket = inpkt;
166 NetRxPacketLen = len;
167 et = (Ethernet_t *)inpkt;
168 @@ -1922,3 +1942,162 @@ ushort getenv_VLAN(char *var)
169 {
170 return (string_to_VLAN(getenv(var)));
171 }
172 +
173 +#if defined(CONFIG_CMD_HTTPD)
174 +
175 +void
176 +NetSendHttpd(void)
177 +{
178 + volatile uchar *tmpbuf = NetTxPacket;
179 + int i;
180 +
181 + for(i = 0; i < 40 + UIP_LLH_LEN; i++) {
182 + tmpbuf[i] = uip_buf[i];
183 + }
184 +
185 + for(; i < uip_len; i++) {
186 + tmpbuf[i] = uip_appdata[i - 40 - UIP_LLH_LEN];
187 + }
188 + eth_send(NetTxPacket, uip_len);
189 +}
190 +
191 +#define BUF ((struct uip_eth_hdr *)&uip_buf[0])
192 +
193 +void
194 +NetReceiveHttpd(volatile uchar * inpkt, int len)
195 +{
196 + memcpy(uip_buf, inpkt, len);
197 + uip_len = len;
198 + if(BUF->type == htons(UIP_ETHTYPE_IP)) {
199 + uip_arp_ipin();
200 + uip_input();
201 + if(uip_len > 0) {
202 + uip_arp_out();
203 + NetSendHttpd();
204 + }
205 + } else if(BUF->type == htons(UIP_ETHTYPE_ARP)) {
206 + uip_arp_arpin();
207 + if(uip_len > 0) {
208 + NetSendHttpd();
209 + }
210 + }
211 +}
212 +
213 +int
214 +NetLoopHttpd(void)
215 +{
216 + unsigned long long tout = 0;
217 + bd_t *bd = gd->bd;
218 + unsigned short int ip[2];
219 +
220 +#ifdef CONFIG_NET_MULTI
221 + NetRestarted = 0;
222 + NetDevExists = 0;
223 +#endif
224 +
225 + /* XXX problem with bss workaround */
226 + NetArpWaitPacketMAC = NULL;
227 + NetArpWaitTxPacket = NULL;
228 + NetArpWaitPacketIP = 0;
229 + NetArpWaitReplyIP = 0;
230 + NetArpWaitTxPacket = NULL;
231 + NetTxPacket = NULL;
232 + NetTryCount = 1;
233 +
234 + if (!NetTxPacket) {
235 + int i;
236 + /*
237 + * Setup packet buffers, aligned correctly.
238 + */
239 + NetTxPacket = &PktBuf[0] + (PKTALIGN - 1);
240 + NetTxPacket -= (ulong)NetTxPacket % PKTALIGN;
241 + for (i = 0; i < PKTBUFSRX; i++) {
242 + NetRxPackets[i] = NetTxPacket + (i+1)*PKTSIZE_ALIGN;
243 + }
244 + }
245 +
246 + if (!NetArpWaitTxPacket) {
247 + NetArpWaitTxPacket = &NetArpWaitPacketBuf[0] + (PKTALIGN - 1);
248 + NetArpWaitTxPacket -= (ulong)NetArpWaitTxPacket % PKTALIGN;
249 + NetArpWaitTxPacketSize = 0;
250 + }
251 +
252 +restart:
253 +
254 + eth_halt();
255 +#ifdef CONFIG_NET_MULTI
256 + eth_set_current();
257 +#endif
258 + if (eth_init(bd) < 0) {
259 + eth_halt();
260 + return(-1);
261 + }
262 +
263 +#ifdef CONFIG_NET_MULTI
264 + memcpy (NetOurEther, eth_get_dev()->enetaddr, 6);
265 +#else
266 + eth_getenv_enetaddr("ethaddr", NetOurEther);
267 +#endif
268 +
269 + NetCopyIP(&NetOurIP, &bd->bi_ip_addr);
270 + NetOurGatewayIP = getenv_IPaddr ("gatewayip");
271 + NetOurSubnetMask= getenv_IPaddr ("netmask");
272 + NetOurVLAN = getenv_VLAN("vlan");
273 + NetOurNativeVLAN = getenv_VLAN("nvlan");
274 +
275 + printf("starting httpd server from server %ld.%ld.%ld.%ld\n",
276 + (bd->bi_ip_addr & 0xff000000) >> 24,
277 + (bd->bi_ip_addr & 0x00ff0000) >> 16,
278 + (bd->bi_ip_addr & 0x0000ff00) >> 8,
279 + (bd->bi_ip_addr & 0x000000ff));
280 +
281 + HttpdStart();
282 +
283 + ip[0] = ((bd->bi_ip_addr & 0xffff0000) >> 16);
284 + ip[1] = (bd->bi_ip_addr & 0x0000ffff);
285 + uip_sethostaddr(ip);
286 +
287 + do_http_progress(HTTP_PROGRESS_START);
288 +
289 + https_running = 1;
290 + for (;;) {
291 + unsigned long long t1;
292 + WATCHDOG_RESET();
293 + if(eth_rx() > 0) {
294 + HttpdHandler();
295 + } else {
296 + t1 = get_ticks();
297 + if(t1 - tout > 1000) {
298 + do_http_progress(HTTP_PROGRESS_TIMEOUT);
299 + tout = t1;
300 + }
301 + }
302 + if(!httpd_upload_complete)
303 + continue;
304 + printf("Bytes transferred = %ld (%lx hex)\n",
305 + NetBootFileXferSize,
306 + NetBootFileXferSize);
307 + eth_halt();
308 + do_http_progress(HTTP_PROGRESS_UPLOAD_READY);
309 + if(do_http_upgrade(&httpd_upload_data[0], NetBootFileXferSize) == 0) {
310 + do_http_progress(HTTP_PROGRESS_UGRADE_READY);
311 + udelay(1000 * 10);
312 + do_reset (0,0,0,0);
313 + return 0;
314 + }
315 + break;
316 + }
317 + https_running = 0;
318 + NetBootFileXferSize = 0;
319 + httpd_upload_complete = 0;
320 + upload_running = 0;
321 +// free(httpd_upload_data);
322 +
323 + do_http_progress(HTTP_PROGRESS_UGRADE_FAILED);
324 +
325 + goto restart;
326 +
327 + return -1;
328 +}
329 +
330 +#endif
331 --- /dev/null
332 +++ b/net/rsa/Makefile
333 @@ -0,0 +1,31 @@
334 +#
335 +# FONRSA & FONSIGN libraries unit testing
336 +#
337 +# This file is part of FONUCS. Copyright (C) 2007 FON Wireless Ltd.
338 +#
339 +# Execute in this directory
340 +#
341 +# Created: 20070422 Pablo Martin Medrano <pablo@fon.com>
342 +#
343 +# $Id: Makefile 389 2007-06-11 08:29:56Z pablo.martin $
344 +#
345 +# FIXME: Put this in the main Makefile.am
346 +#
347 +all: fonsign dump_key
348 +
349 +fonsign:
350 + gcc -g sign_openssl.c -D__MAINTEST__ -o fonsign -lssl
351 +
352 +dump_key:
353 + gcc -o dump_key dump_key.c
354 + ./dump_key > public_key.h
355 +
356 +foncheckrsa:
357 + gcc -g bigint.c fonrsa.c rmd160.c foncheckrsa.c base64.c log.c -o foncheckrsa
358 +
359 +#private_fon_rsa_key.pem:
360 +# openssl genrsa -out private_fon_rsa_key.pem 4096
361 +# openssl rsa -in private_fon_rsa_key.pem -pubout -out public_fon_rsa_key.pem
362 +
363 +clean:
364 + rm fonsign dump_key
365 --- /dev/null
366 +++ b/net/rsa/base64.c
367 @@ -0,0 +1,137 @@
368 +#include "base64.h"
369 +
370 +static const char cb64[]="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
371 +/* Note that '=' (padding) is 0 */
372 +static const unsigned char fb64[256] = {
373 + 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
374 + 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
375 + 255,255,255,255,255,255,255,255,255,255,255, 62,255,255,255, 63,
376 + 52, 53, 54, 55, 56, 57, 58, 59, 60, 61,255,255,255, 0,255,255,
377 + 255, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
378 + 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,255,255,255,255,255,
379 + 255, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
380 + 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,255,255,255,255,255,
381 + 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
382 + 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
383 + 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
384 + 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
385 + 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
386 + 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
387 + 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
388 + 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
389 +};
390 +
391 +static int encodeblock( unsigned char *in, char *out, int len )
392 +{
393 + char s[3];
394 + int i;
395 +
396 + for (i = 0; i < len; i++)
397 + s[i] = in[i];
398 + for (i = len; i < 3; i++)
399 + s[i] = 0;
400 + out[0] = (unsigned char)(cb64[(s[0] & 0xfc) >> 2 ]);
401 + out[1] = (unsigned char)(cb64[((s[0] & 0x03) << 4) | ((s[1] & 0xf0) >> 4) ]);
402 + out[2] = (unsigned char)(cb64[((s[1] & 0x0f) << 2) | ((s[2] & 0xc0) >> 6) ]);
403 + out[3] = (unsigned char)(cb64[s[2] & 0x3f ]);
404 + switch (len) {
405 + case 1:
406 + out[3] = '=';
407 + case 2:
408 + out[2] = '=';
409 + break;
410 + default:
411 + break;
412 + }
413 +
414 + return 4;
415 +}
416 +
417 +static int decodeblock(char *ins, unsigned char *out, int len)
418 +{
419 + int i;
420 + unsigned char in[4];
421 + int skip = 0;
422 +
423 + if (len != 4)
424 + return -1;
425 + for (i = 0; i < len; i++) {
426 + if (ins[i] == '=') {
427 + in[i] = 0;
428 + skip++;
429 + } else
430 + in[i] = fb64[(int)(ins[i])];
431 + if (in[i] == 255) {
432 + return -1;
433 + }
434 + }
435 + out[0] = (unsigned char ) (in[0] << 2 | in[1] >> 4);
436 + if (skip == 2) {
437 + return 1;
438 + }
439 + out[1] = (unsigned char )((in[1] & 0x0f) << 4 | in[2] >> 2);
440 + if (skip == 1) {
441 + return 2;
442 + }
443 + out[2] = (unsigned char ) (((in[2] << 6) & 0xc0) | in[3]);
444 +
445 + return 3;
446 +}
447 +
448 +int B64_encode(char *source, char *destination, int size_source, int size_destination)
449 +{
450 + int chunks, reminder, size, d, i, size_expected;
451 + char *s;
452 + unsigned char *t;
453 +
454 + chunks = size_source / 3;
455 + reminder = size_source % 3;
456 + size = 0;
457 + size_expected = (chunks * 4) + (reminder?(reminder + 1):0);
458 + if (size_destination < ((chunks * 4) + (reminder?4:0))) {
459 + return 1;
460 + }
461 + for (i = 0; i < chunks; i++) {
462 + s = source + (i * 3);
463 + t = destination + (i * 4);
464 + d = encodeblock(s, t, 3);
465 + if (d == -1) {
466 + return 1;
467 + }
468 + size += d;
469 + }
470 + if (reminder) {
471 + d = encodeblock(source + (chunks * 3), destination + (chunks * 4), reminder);
472 + if (d == -1) {
473 + return 1;
474 + }
475 + size += d;
476 + }
477 + return size;
478 +}
479 +
480 +int B64_decode(char *source, char *destination, int size_source, int size_destination)
481 +{
482 + int chunks, reminder, size, d, i;
483 +
484 + chunks = size_source / 4;
485 + reminder = size_source % 4;
486 + size = 0;
487 + if (reminder) {
488 + return 1;
489 + }
490 + if (size_destination < ((chunks * 3))) {
491 + printf("%d, %d\n",
492 + size_destination, ((chunks * 3) + reminder));
493 + return -1;
494 + }
495 + for (i = 0; i < chunks; i++) {
496 + d = decodeblock(source + (i * 4), destination + (i * 3), 4);
497 + if (d == -1) {
498 + return -1;
499 + }
500 + size += d;
501 + }
502 + return size;
503 +}
504 +
505 --- /dev/null
506 +++ b/net/rsa/base64.h
507 @@ -0,0 +1,11 @@
508 +#ifndef _BASE64_H_
509 +#define _BASE64_H_
510 +#ifdef __cplusplus
511 +extern "C" {
512 +#endif
513 +int B64_encode(char *source, char *destination, int size_source, int size_destination);
514 +int B64_decode(char *source, char *destination, int size_source, int size_destination);
515 +#ifdef __cplusplus
516 +}
517 +#endif
518 +#endif
519 --- /dev/null
520 +++ b/net/rsa/bigint.c
521 @@ -0,0 +1,906 @@
522 +/*
523 + * Copyright(C) 2006
524 + *
525 + * This library is free software; you can redistribute it and/or modify
526 + * it under the terms of the GNU Lesser General Public License as published by
527 + * the Free Software Foundation; either version 2.1 of the License, or
528 + * (at your option) any later version.
529 + *
530 + * This library is distributed in the hope that it will be useful,
531 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
532 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
533 + * GNU Lesser General Public License for more details.
534 + *
535 + * You should have received a copy of the GNU Lesser General Public License
536 + * along with this library; if not, write to the Free Software
537 + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
538 + */
539 +
540 +/**
541 + * @defgroup bigint_api Big Integer API
542 + * @brief The bigint implementation as used by the axTLS project.
543 + *
544 + * The bigint library is for RSA encryption/decryption as well as signing.
545 + * This code tries to minimise use of malloc/free by maintaining a small
546 + * cache. A bigint context may maintain state by being made "permanent".
547 + * It be be later released with a bi_depermanent() and bi_free() call.
548 + *
549 + * It supports the following reduction techniques:
550 + * - Classical
551 + * - Barrett
552 + * - Montgomery
553 + *
554 + * It also implements the following:
555 + * - Karatsuba multiplication
556 + * - Squaring
557 + * - Sliding window exponentiation
558 + * - Chinese Remainder Theorem (implemented in rsa.c).
559 + *
560 + * All the algorithms used are pretty standard, and designed for different
561 + * data bus sizes. Negative numbers are not dealt with at all, so a subtraction
562 + * may need to be tested for negativity.
563 + *
564 + * This library steals some ideas from Jef Poskanzer
565 + * <http://cs.marlboro.edu/term/cs-fall02/algorithms/crypto/RSA/bigint>
566 + * and GMP <http://www.swox.com/gmp>. It gets most of its implementation
567 + * detail from "The Handbook of Applied Cryptography"
568 + * <http://www.cacr.math.uwaterloo.ca/hac/about/chap14.pdf>
569 + * @{
570 + */
571 +
572 +#include "bigint.h"
573 +#include <malloc.h>
574 +#include "div64.h"
575 +
576 +static bigint *bi_int_multiply(BI_CTX *ctx, bigint *bi, comp i);
577 +static bigint *bi_int_divide(BI_CTX *ctx, bigint *biR, comp denom);
578 +static bigint *alloc(BI_CTX *ctx, int size);
579 +static bigint *trim(bigint *bi);
580 +static void more_comps(bigint *bi, int n);
581 +
582 +/**
583 + * @brief Start a new bigint context.
584 + * @return A bigint context.
585 + */
586 +BI_CTX *bi_initialize(void)
587 +{
588 + BI_CTX *ctx = (BI_CTX *)calloc(1, sizeof(BI_CTX));
589 +
590 + ctx->active_list = NULL;
591 + ctx->active_count = 0;
592 + ctx->free_list = NULL;
593 + ctx->free_count = 0;
594 + ctx->mod_offset = 0;
595 +
596 + /* the radix */
597 + ctx->bi_radix = alloc(ctx, 2);
598 + ctx->bi_radix->comps[0] = 0;
599 + ctx->bi_radix->comps[1] = 1;
600 + bi_permanent(ctx->bi_radix);
601 +
602 + return ctx;
603 +}
604 +
605 +/**
606 + * @brief Close the bigint context and free any resources.
607 + *
608 + * Free up any used memory - a check is done if all objects were not
609 + * properly freed.
610 + * @param ctx [in] The bigint session context.
611 + */
612 +void bi_terminate(BI_CTX *ctx)
613 +{
614 + bigint *p, *pn;
615 +
616 + bi_depermanent(ctx->bi_radix);
617 + bi_free(ctx, ctx->bi_radix);
618 +
619 + if (ctx->active_count != 0)
620 + {
621 + printf("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
622 + printf("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
623 + printf("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
624 + printf("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
625 + printf("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
626 + printf("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
627 + return;
628 + }
629 +
630 + for (p = ctx->free_list; p != NULL; p = pn)
631 + {
632 + pn = p->next;
633 + free(p->comps);
634 + free(p);
635 + }
636 +
637 + free(ctx);
638 +}
639 +
640 +/**
641 + * @brief Increment the number of references to this object.
642 + * It does not do a full copy.
643 + * @param bi [in] The bigint to copy.
644 + * @return A referent to the same bigint.
645 + */
646 +bigint *bi_copy(bigint *bi)
647 +{
648 + check(bi);
649 + if (bi->refs != PERMANENT)
650 + bi->refs++;
651 + return bi;
652 +}
653 +
654 +/**
655 + * @brief Simply make a bigint object "unfreeable" if bi_free() is called on it.
656 + *
657 + * For this object to be freed, bi_depermanent() must be called.
658 + * @param bi [in] The bigint to be made permanent.
659 + */
660 +void bi_permanent(bigint *bi)
661 +{
662 + check(bi);
663 + if (bi->refs != 1)
664 + {
665 + printf("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
666 + printf("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
667 + printf("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
668 + return;
669 + }
670 +
671 + bi->refs = PERMANENT;
672 +}
673 +
674 +/**
675 + * @brief Take a permanent object and make it elligible for freedom.
676 + * @param bi [in] The bigint to be made back to temporary.
677 + */
678 +void bi_depermanent(bigint *bi)
679 +{
680 + check(bi);
681 + if (bi->refs != PERMANENT)
682 + {
683 + printf("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
684 + printf("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
685 + printf("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
686 + printf("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
687 + return;
688 + }
689 +
690 + bi->refs = 1;
691 +}
692 +
693 +/**
694 + * @brief Free a bigint object so it can be used again.
695 + *
696 + * The memory itself it not actually freed, just tagged as being available
697 + * @param ctx [in] The bigint session context.
698 + * @param bi [in] The bigint to be freed.
699 + */
700 +void bi_free(BI_CTX *ctx, bigint *bi)
701 +{
702 + check(bi);
703 + if (bi->refs == PERMANENT)
704 + {
705 + return;
706 + }
707 +
708 + if (--bi->refs > 0)
709 + {
710 + return;
711 + }
712 +
713 + bi->next = ctx->free_list;
714 + ctx->free_list = bi;
715 + ctx->free_count++;
716 +
717 + if (--ctx->active_count < 0)
718 + {
719 + printf("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
720 + printf("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
721 + printf("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
722 + printf("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
723 + return;
724 + }
725 +}
726 +
727 +/**
728 + * @brief Convert an (unsigned) integer into a bigint.
729 + * @param ctx [in] The bigint session context.
730 + * @param i [in] The (unsigned) integer to be converted.
731 + *
732 + */
733 +bigint *int_to_bi(BI_CTX *ctx, comp i)
734 +{
735 + bigint *biR = alloc(ctx, 1);
736 + biR->comps[0] = i;
737 + return biR;
738 +}
739 +
740 +/**
741 + * @brief Do a full copy of the bigint object.
742 + * @param ctx [in] The bigint session context.
743 + * @param bi [in] The bigint object to be copied.
744 + */
745 +bigint *bi_clone(BI_CTX *ctx, const bigint *bi)
746 +{
747 + bigint *biR = alloc(ctx, bi->size);
748 + check(bi);
749 + memcpy(biR->comps, bi->comps, bi->size*COMP_BYTE_SIZE);
750 + return biR;
751 +}
752 +
753 +/**
754 + * @brief Perform an additon operation between two bigints.
755 + * @param ctx [in] The bigint session context.
756 + * @param bia [in] A bigint.
757 + * @param bib [in] Another bigint.
758 + * @return The result of the addition.
759 + */
760 +bigint *bi_add(BI_CTX *ctx, bigint *bia, bigint *bib)
761 +{
762 + int n;
763 + comp carry = 0;
764 + comp *pa, *pb;
765 +
766 + check(bia);
767 + check(bib);
768 +
769 + if (bia->size > bib->size)
770 + n = bia->size;
771 + else
772 + n = bib->size;
773 + more_comps(bia, n+1);
774 + more_comps(bib, n);
775 + pa = bia->comps;
776 + pb = bib->comps;
777 +
778 + do
779 + {
780 + comp sl, rl, cy1;
781 + sl = *pa + *pb++;
782 + rl = sl + carry;
783 + cy1 = sl < *pa;
784 + carry = cy1 | (rl < sl);
785 + *pa++ = rl;
786 + } while (--n != 0);
787 +
788 + *pa = carry; /* do overflow */
789 + bi_free(ctx, bib);
790 + return trim(bia);
791 +}
792 +
793 +/**
794 + * @brief Perform a subtraction operation between two bigints.
795 + * @param ctx [in] The bigint session context.
796 + * @param bia [in] A bigint.
797 + * @param bib [in] Another bigint.
798 + * @param is_negative [out] If defined, indicates that the result was negative.
799 + * is_negative may be NULL.
800 + * @return The result of the subtraction. The result is always positive.
801 + */
802 +bigint *bi_subtract(BI_CTX *ctx,
803 + bigint *bia, bigint *bib, int *is_negative)
804 +{
805 + int n = bia->size;
806 + comp *pa, *pb, carry = 0;
807 +
808 + check(bia);
809 + check(bib);
810 +
811 + more_comps(bib, n);
812 + pa = bia->comps;
813 + pb = bib->comps;
814 +
815 + do
816 + {
817 + comp sl, rl, cy1;
818 + sl = *pa - *pb++;
819 + rl = sl - carry;
820 + cy1 = sl > *pa;
821 + carry = cy1 | (rl > sl);
822 + *pa++ = rl;
823 + } while (--n != 0);
824 +
825 + if (is_negative) /* indicate a negative result */
826 + {
827 + *is_negative = carry;
828 + }
829 +
830 + bi_free(ctx, trim(bib)); /* put bib back to the way it was */
831 + return trim(bia);
832 +}
833 +
834 +/**
835 + * Perform a multiply between a bigint an an (unsigned) integer
836 + */
837 +static bigint *bi_int_multiply(BI_CTX *ctx, bigint *bia, comp b)
838 +{
839 + int j = 0, n = bia->size;
840 + bigint *biR = alloc(ctx, n + 1);
841 + comp carry = 0;
842 + comp *r = biR->comps;
843 + comp *a = bia->comps;
844 +
845 + check(bia);
846 +
847 + /* clear things to start with */
848 + memset(r, 0, ((n+1)*COMP_BYTE_SIZE));
849 +
850 + do
851 + {
852 + long_comp tmp = *r + (long_comp)a[j]*b + carry;
853 + *r++ = (comp)tmp; /* downsize */
854 + carry = (comp)(tmp >> COMP_BIT_SIZE);
855 + } while (++j < n);
856 +
857 + *r = carry;
858 + bi_free(ctx, bia);
859 + return trim(biR);
860 +}
861 +
862 +/**
863 + * @brief Does both division and modulo calculations.
864 + *
865 + * Used extensively when doing classical reduction.
866 + * @param ctx [in] The bigint session context.
867 + * @param u [in] A bigint which is the numerator.
868 + * @param v [in] Either the denominator or the modulus depending on the mode.
869 + * @param is_mod [n] Determines if this is a normal division (0) or a reduction
870 + * (1).
871 + * @return The result of the division/reduction.
872 + */
873 +bigint *bi_divide(BI_CTX *ctx, bigint *u, bigint *v, int is_mod)
874 +{
875 + int n = v->size, m = u->size-n;
876 + int j = 0, orig_u_size = u->size;
877 + uint8_t mod_offset = ctx->mod_offset;
878 + comp d;
879 + bigint *quotient, *tmp_u;
880 + comp q_dash;
881 +
882 + check(u);
883 + check(v);
884 +
885 + /* if doing reduction and we are < mod, then return mod */
886 + if (is_mod && bi_compare(v, u) > 0)
887 + {
888 + bi_free(ctx, v);
889 + return u;
890 + }
891 +
892 + quotient = alloc(ctx, m+1);
893 + tmp_u = alloc(ctx, n+1);
894 + v = trim(v); /* make sure we have no leading 0's */
895 + // d = (comp)((long_comp)COMP_RADIX/(V1+1));
896 + long_comp x = COMP_RADIX; do_div(x, V1+1); d = x;
897 +
898 + /* clear things to start with */
899 + memset(quotient->comps, 0, ((quotient->size)*COMP_BYTE_SIZE));
900 +
901 + /* normalise */
902 + if (d > 1)
903 + {
904 + u = bi_int_multiply(ctx, u, d);
905 +
906 + if (is_mod)
907 + {
908 + v = ctx->bi_normalised_mod[mod_offset];
909 + }
910 + else
911 + {
912 + v = bi_int_multiply(ctx, v, d);
913 + }
914 + }
915 +
916 + if (orig_u_size == u->size) /* new digit position u0 */
917 + {
918 + more_comps(u, orig_u_size + 1);
919 + }
920 +
921 + do
922 + {
923 + /* get a temporary short version of u */
924 + memcpy(tmp_u->comps, &u->comps[u->size-n-1-j], (n+1)*COMP_BYTE_SIZE);
925 +
926 + /* calculate q' */
927 + if (U(0) == V1)
928 + {
929 + q_dash = COMP_RADIX-1;
930 + }
931 + else
932 + {
933 + //q_dash = (comp)(((long_comp)U(0)*COMP_RADIX + U(1))/V1);
934 + long_comp x = U(0)*COMP_RADIX + U(1); do_div(x, V1); q_dash = x;
935 +
936 + }
937 +
938 + if (v->size > 1 && V2)
939 + {
940 + /* we are implementing the following
941 + if (V2*q_dash > (((U(0)*COMP_RADIX + U(1) -
942 + q_dash*V1)*COMP_RADIX) + U(2))) ... */
943 + comp inner = (comp)((long_comp)COMP_RADIX*U(0) + U(1) -
944 + (long_comp)q_dash*V1);
945 + if ((long_comp)V2*q_dash > (long_comp)inner*COMP_RADIX + U(2))
946 + {
947 + q_dash--;
948 + }
949 + }
950 +
951 + /* multiply and subtract */
952 + if (q_dash)
953 + {
954 + int is_negative;
955 + tmp_u = bi_subtract(ctx, tmp_u,
956 + bi_int_multiply(ctx, bi_copy(v), q_dash), &is_negative);
957 + more_comps(tmp_u, n+1);
958 +
959 + Q(j) = q_dash;
960 +
961 + /* add back */
962 + if (is_negative)
963 + {
964 + Q(j)--;
965 + tmp_u = bi_add(ctx, tmp_u, bi_copy(v));
966 + /* lop off the carry */
967 + tmp_u->size--;
968 + v->size--;
969 + }
970 + }
971 + else
972 + {
973 + Q(j) = 0;
974 + }
975 +
976 + /* copy back to u */
977 + memcpy(&u->comps[u->size-n-1-j], tmp_u->comps, (n+1)*COMP_BYTE_SIZE);
978 + } while (++j <= m);
979 +
980 + bi_free(ctx, tmp_u);
981 + bi_free(ctx, v);
982 +
983 + if (is_mod) /* get the remainder */
984 + {
985 + bi_free(ctx, quotient);
986 + return bi_int_divide(ctx, trim(u), d);
987 + }
988 + else /* get the quotient */
989 + {
990 + bi_free(ctx, u);
991 + return trim(quotient);
992 + }
993 +}
994 +
995 +/**
996 + * Perform an integer divide on a bigint.
997 + */
998 +static bigint *bi_int_divide(BI_CTX *ctx, bigint *biR, comp denom)
999 +{
1000 + int i = biR->size - 1;
1001 + long_comp r = 0;
1002 +
1003 + check(biR);
1004 +
1005 + do
1006 + {
1007 + r = (r<<COMP_BIT_SIZE) + biR->comps[i];
1008 + //biR->comps[i] = (comp)(r / denom);
1009 + long_comp x = r; do_div(x, denom); biR->comps[i] = x;
1010 +/* while(r > denom)
1011 + {
1012 + r -= denom;
1013 + }*/
1014 + r%=denom;
1015 + } while (--i != 0);
1016 +
1017 + return trim(biR);
1018 +}
1019 +
1020 +/**
1021 + * @brief Allow a binary sequence to be imported as a bigint.
1022 + * @param ctx [in] The bigint session context.
1023 + * @param data [in] The data to be converted.
1024 + * @param size [in] The number of bytes of data.
1025 + * @return A bigint representing this data.
1026 + */
1027 +bigint *bi_import(BI_CTX *ctx, const uint8_t *data, int size)
1028 +{
1029 + bigint *biR = alloc(ctx, (size+COMP_BYTE_SIZE-1)/COMP_BYTE_SIZE);
1030 + int i, j = 0, offset = 0;
1031 +
1032 + memset(biR->comps, 0, biR->size*COMP_BYTE_SIZE);
1033 +
1034 + for (i = size-1; i >= 0; i--)
1035 + {
1036 + biR->comps[offset] += data[i] << (j*8);
1037 +
1038 + if (++j == COMP_BYTE_SIZE)
1039 + {
1040 + j = 0;
1041 + offset ++;
1042 + }
1043 + }
1044 +
1045 + return trim(biR);
1046 +}
1047 +
1048 +/**
1049 + * @brief Take a bigint and convert it into a byte sequence.
1050 + *
1051 + * This is useful after a decrypt operation.
1052 + * @param ctx [in] The bigint session context.
1053 + * @param x [in] The bigint to be converted.
1054 + * @param data [out] The converted data as a byte stream.
1055 + * @param size [in] The maximum size of the byte stream. Unused bytes will be
1056 + * zeroed.
1057 + */
1058 +void bi_export(BI_CTX *ctx, bigint *x, uint8_t *data, int size)
1059 +{
1060 + int i, j, k = size-1;
1061 +
1062 + check(x);
1063 + memset(data, 0, size); /* ensure all leading 0's are cleared */
1064 +
1065 + for (i = 0; i < x->size; i++)
1066 + {
1067 + for (j = 0; j < COMP_BYTE_SIZE; j++)
1068 + {
1069 + comp mask = 0xff << (j*8);
1070 + int num = (x->comps[i] & mask) >> (j*8);
1071 + data[k--] = num;
1072 +
1073 + if (k < 0)
1074 + {
1075 + break;
1076 + }
1077 + }
1078 + }
1079 +
1080 + bi_free(ctx, x);
1081 +}
1082 +
1083 +/**
1084 + * @brief Pre-calculate some of the expensive steps in reduction.
1085 + *
1086 + * This function should only be called once (normally when a session starts).
1087 + * When the session is over, bi_free_mod() should be called. bi_mod_power()
1088 + * relies on this function being called.
1089 + * @param ctx [in] The bigint session context.
1090 + * @param bim [in] The bigint modulus that will be used.
1091 + * @param mod_offset [in] There are three moduluii that can be stored - the
1092 + * standard modulus, and it's two primes p and q. This offset refers to which
1093 + * modulus we are referring to.
1094 + * @see bi_free_mod(), bi_mod_power().
1095 + */
1096 +void bi_set_mod(BI_CTX *ctx, bigint *bim, int mod_offset)
1097 +{
1098 + int k = bim->size;
1099 + comp d;
1100 +// comp d = (comp)((long_comp)COMP_RADIX/(bim->comps[k-1]+1));
1101 + long_comp x = COMP_RADIX; do_div(x, bim->comps[k-1]+1); d = x;
1102 +
1103 + ctx->bi_mod[mod_offset] = bim;
1104 + bi_permanent(ctx->bi_mod[mod_offset]);
1105 + ctx->bi_normalised_mod[mod_offset] = bi_int_multiply(ctx, bim, d);
1106 + bi_permanent(ctx->bi_normalised_mod[mod_offset]);
1107 +}
1108 +
1109 +/**
1110 + * @brief Used when cleaning various bigints at the end of a session.
1111 + * @param ctx [in] The bigint session context.
1112 + * @param mod_offset [in] The offset to use.
1113 + * @see bi_set_mod().
1114 + */
1115 +void bi_free_mod(BI_CTX *ctx, int mod_offset)
1116 +{
1117 + bi_depermanent(ctx->bi_mod[mod_offset]);
1118 + bi_free(ctx, ctx->bi_mod[mod_offset]);
1119 + bi_depermanent(ctx->bi_normalised_mod[mod_offset]);
1120 + bi_free(ctx, ctx->bi_normalised_mod[mod_offset]);
1121 +}
1122 +
1123 +/**
1124 + * Perform a standard multiplication between two bigints.
1125 + */
1126 +static bigint *regular_multiply(BI_CTX *ctx, bigint *bia, bigint *bib)
1127 +{
1128 + int i, j, i_plus_j, n = bia->size, t = bib->size;
1129 + bigint *biR = alloc(ctx, n + t);
1130 + comp *sr = biR->comps;
1131 + comp *sa = bia->comps;
1132 + comp *sb = bib->comps;
1133 +
1134 + check(bia);
1135 + check(bib);
1136 +
1137 + /* clear things to start with */
1138 + memset(biR->comps, 0, ((n+t)*COMP_BYTE_SIZE));
1139 + i = 0;
1140 +
1141 + do
1142 + {
1143 + comp carry = 0;
1144 + comp b = *sb++;
1145 + i_plus_j = i;
1146 + j = 0;
1147 +
1148 + do
1149 + {
1150 + long_comp tmp = sr[i_plus_j] + (long_comp)sa[j]*b + carry;
1151 + sr[i_plus_j++] = (comp)tmp; /* downsize */
1152 + carry = (comp)(tmp >> COMP_BIT_SIZE);
1153 + } while (++j < n);
1154 +
1155 + sr[i_plus_j] = carry;
1156 + } while (++i < t);
1157 +
1158 + bi_free(ctx, bia);
1159 + bi_free(ctx, bib);
1160 + return trim(biR);
1161 +}
1162 +
1163 +/**
1164 + * @brief Perform a multiplication operation between two bigints.
1165 + * @param ctx [in] The bigint session context.
1166 + * @param bia [in] A bigint.
1167 + * @param bib [in] Another bigint.
1168 + * @return The result of the multiplication.
1169 + */
1170 +bigint *bi_multiply(BI_CTX *ctx, bigint *bia, bigint *bib)
1171 +{
1172 + check(bia);
1173 + check(bib);
1174 +
1175 + return regular_multiply(ctx, bia, bib);
1176 +}
1177 +
1178 +
1179 +/**
1180 + * @brief Compare two bigints.
1181 + * @param bia [in] A bigint.
1182 + * @param bib [in] Another bigint.
1183 + * @return -1 if smaller, 1 if larger and 0 if equal.
1184 + */
1185 +int bi_compare(bigint *bia, bigint *bib)
1186 +{
1187 + int r, i;
1188 +
1189 + check(bia);
1190 + check(bib);
1191 +
1192 + if (bia->size > bib->size)
1193 + r = 1;
1194 + else if (bia->size < bib->size)
1195 + r = -1;
1196 + else
1197 + {
1198 + comp *a = bia->comps;
1199 + comp *b = bib->comps;
1200 +
1201 + /* Same number of components. Compare starting from the high end
1202 + * and working down. */
1203 + r = 0;
1204 + i = bia->size - 1;
1205 +
1206 + do
1207 + {
1208 + if (a[i] > b[i])
1209 + {
1210 + r = 1;
1211 + break;
1212 + }
1213 + else if (a[i] < b[i])
1214 + {
1215 + r = -1;
1216 + break;
1217 + }
1218 + } while (--i >= 0);
1219 + }
1220 +
1221 + return r;
1222 +}
1223 +
1224 +/**
1225 + * Allocate and zero more components. Does not consume bi.
1226 + */
1227 +static void more_comps(bigint *bi, int n)
1228 +{
1229 + if (n > bi->max_comps)
1230 + {
1231 + if ((bi->max_comps * 2) > n) {
1232 + bi->max_comps = bi->max_comps * 2;
1233 + } else {
1234 + bi->max_comps = n;
1235 + }
1236 + bi->comps = (comp*)realloc(bi->comps, bi->max_comps * COMP_BYTE_SIZE);
1237 + }
1238 +
1239 + if (n > bi->size)
1240 + {
1241 + memset(&bi->comps[bi->size], 0, (n-bi->size)*COMP_BYTE_SIZE);
1242 + }
1243 +
1244 + bi->size = n;
1245 +}
1246 +
1247 +/*
1248 + * Make a new empty bigint. It may just use an old one if one is available.
1249 + * Otherwise get one of the heap.
1250 + */
1251 +static bigint *alloc(BI_CTX *ctx, int size)
1252 +{
1253 + bigint *biR;
1254 +
1255 + /* Can we recycle an old bigint? */
1256 + if (ctx->free_list != NULL)
1257 + {
1258 + biR = ctx->free_list;
1259 + ctx->free_list = biR->next;
1260 + ctx->free_count--;
1261 + if (biR->refs != 0)
1262 + {
1263 + printf("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
1264 + printf("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
1265 + printf("%s:%s[%d]\n", __FILE__, __func__, __LINE__);
1266 + return 0;
1267 + }
1268 +
1269 + more_comps(biR, size);
1270 + }
1271 + else
1272 + {
1273 + /* No free bigints available - create a new one. */
1274 + biR = (bigint *)malloc(sizeof(bigint));
1275 + biR->comps = (comp*) malloc(size * COMP_BYTE_SIZE);
1276 + biR->max_comps = size; /* give some space to spare */
1277 + }
1278 +
1279 + biR->size = size;
1280 + biR->refs = 1;
1281 + biR->next = NULL;
1282 + ctx->active_count++;
1283 + return biR;
1284 +}
1285 +
1286 +/*
1287 + * Work out the highest '1' bit in an exponent. Used when doing sliding-window
1288 + * exponentiation.
1289 + */
1290 +static int find_max_exp_index(bigint *biexp)
1291 +{
1292 + int i = COMP_BIT_SIZE-1;
1293 + comp shift = COMP_RADIX/2;
1294 + comp test = biexp->comps[biexp->size-1]; /* assume no leading zeroes */
1295 +
1296 + check(biexp);
1297 +
1298 + do
1299 + {
1300 + if (test & shift)
1301 + {
1302 + return i+(biexp->size-1)*COMP_BIT_SIZE;
1303 + }
1304 +
1305 + shift >>= 1;
1306 + } while (--i != 0);
1307 +
1308 + return -1; /* error - must have been a leading 0 */
1309 +}
1310 +
1311 +/*
1312 + * Is a particular bit is an exponent 1 or 0? Used when doing sliding-window
1313 + * exponentiation.
1314 + */
1315 +static int exp_bit_is_one(bigint *biexp, int offset)
1316 +{
1317 + comp test = biexp->comps[offset / COMP_BIT_SIZE];
1318 + int num_shifts = offset % COMP_BIT_SIZE;
1319 + comp shift = 1;
1320 + int i;
1321 +
1322 + check(biexp);
1323 +
1324 + for (i = 0; i < num_shifts; i++)
1325 + {
1326 + shift <<= 1;
1327 + }
1328 +
1329 + return test & shift;
1330 +}
1331 +
1332 +/*
1333 + * Delete any leading 0's (and allow for 0).
1334 + */
1335 +static bigint *trim(bigint *bi)
1336 +{
1337 + check(bi);
1338 +
1339 + while (bi->comps[bi->size-1] == 0 && bi->size > 1)
1340 + {
1341 + bi->size--;
1342 + }
1343 +
1344 + return bi;
1345 +}
1346 +
1347 +/**
1348 + * @brief Perform a modular exponentiation.
1349 + *
1350 + * This function requires bi_set_mod() to have been called previously. This is
1351 + * one of the optimisations used for performance.
1352 + * @param ctx [in] The bigint session context.
1353 + * @param bi [in] The bigint on which to perform the mod power operation.
1354 + * @param biexp [in] The bigint exponent.
1355 + * @see bi_set_mod().
1356 + */
1357 +bigint *bi_mod_power(BI_CTX *ctx, bigint *bi, bigint *biexp)
1358 +{
1359 + int i = find_max_exp_index(biexp), j, window_size = 1;
1360 + bigint *biR = int_to_bi(ctx, 1);
1361 +
1362 + check(bi);
1363 + check(biexp);
1364 +
1365 + ctx->g = (bigint **)malloc(sizeof(bigint *));
1366 + ctx->g[0] = bi_clone(ctx, bi);
1367 + ctx->window = 1;
1368 + bi_permanent(ctx->g[0]);
1369 +
1370 + /* if sliding-window is off, then only one bit will be done at a time and
1371 + * will reduce to standard left-to-right exponentiation */
1372 + do
1373 + {
1374 + if (exp_bit_is_one(biexp, i))
1375 + {
1376 + int l = i-window_size+1;
1377 + int part_exp = 0;
1378 +
1379 + if (l < 0) /* LSB of exponent will always be 1 */
1380 + {
1381 + l = 0;
1382 + }
1383 + else
1384 + {
1385 + while (exp_bit_is_one(biexp, l) == 0)
1386 + {
1387 + l++; /* go back up */
1388 + }
1389 + }
1390 +
1391 + /* build up the section of the exponent */
1392 + for (j = i; j >= l; j--)
1393 + {
1394 + biR = bi_residue(ctx, bi_square(ctx, biR));
1395 + if (exp_bit_is_one(biexp, j))
1396 + part_exp++;
1397 +
1398 + if (j != l)
1399 + part_exp <<= 1;
1400 + }
1401 +
1402 + part_exp = (part_exp-1)/2; /* adjust for array */
1403 + biR = bi_residue(ctx,
1404 + bi_multiply(ctx, biR, ctx->g[part_exp]));
1405 + i = l-1;
1406 + }
1407 + else /* square it */
1408 + {
1409 + biR = bi_residue(ctx, bi_square(ctx, biR));
1410 + i--;
1411 + }
1412 + } while (i >= 0);
1413 +
1414 + /* cleanup */
1415 + for (i = 0; i < ctx->window; i++)
1416 + {
1417 + bi_depermanent(ctx->g[i]);
1418 + bi_free(ctx, ctx->g[i]);
1419 + }
1420 +
1421 + free(ctx->g);
1422 + bi_free(ctx, bi);
1423 + bi_free(ctx, biexp);
1424 + return biR;
1425 +}
1426 +
1427 +/** @} */
1428 --- /dev/null
1429 +++ b/net/rsa/bigint.h
1430 @@ -0,0 +1,73 @@
1431 +/*
1432 + * Copyright(C) 2006
1433 + *
1434 + * This library is free software; you can redistribute it and/or modify
1435 + * it under the terms of the GNU Lesser General Public License as published by
1436 + * the Free Software Foundation; either version 2 of the License, or
1437 + * (at your option) any later version.
1438 + *
1439 + * This library is distributed in the hope that it will be useful,
1440 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
1441 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1442 + * GNU Lesser General Public License for more details.
1443 + *
1444 + * You should have received a copy of the GNU Lesser General Public License
1445 + * along with this library; if not, write to the Free Software
1446 + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
1447 + *
1448 + * Trimmed down from axTLS
1449 + *
1450 + * $Id: bigint.h 392 2007-06-25 16:24:51Z pablo.martin $
1451 + *
1452 + */
1453 +
1454 +#ifndef BIGINT_HEADER
1455 +#define BIGINT_HEADER
1456 +
1457 +#define CONFIG_BIGINT_CLASSICAL 1
1458 +
1459 +#define SOCKET_READ(A,B,C) read(A,B,C)
1460 +#define SOCKET_WRITE(A,B,C) write(A,B,C)
1461 +#define SOCKET_CLOSE(A) close(A)
1462 +#define TTY_FLUSH()
1463 +
1464 +#include "bigint_impl.h"
1465 +
1466 +#ifndef CONFIG_BIGINT_CHECK_ON
1467 +#define check(A) /**< disappears in normal production mode */
1468 +#endif
1469 +BI_CTX *bi_initialize(void);
1470 +void bi_terminate(BI_CTX *ctx);
1471 +void bi_permanent(bigint *bi);
1472 +void bi_depermanent(bigint *bi);
1473 +void bi_free(BI_CTX *ctx, bigint *bi);
1474 +bigint *bi_copy(bigint *bi);
1475 +bigint *bi_clone(BI_CTX *ctx, const bigint *bi);
1476 +void bi_export(BI_CTX *ctx, bigint *bi, uint8_t *data, int size);
1477 +bigint *bi_import(BI_CTX *ctx, const uint8_t *data, int len);
1478 +bigint *int_to_bi(BI_CTX *ctx, comp i);
1479 +
1480 +/* the functions that actually do something interesting */
1481 +bigint *bi_add(BI_CTX *ctx, bigint *bia, bigint *bib);
1482 +bigint *bi_subtract(BI_CTX *ctx, bigint *bia,
1483 + bigint *bib, int *is_negative);
1484 +bigint *bi_divide(BI_CTX *ctx, bigint *bia, bigint *bim, int is_mod);
1485 +bigint *bi_multiply(BI_CTX *ctx, bigint *bia, bigint *bib);
1486 +bigint *bi_mod_power(BI_CTX *ctx, bigint *bi, bigint *biexp);
1487 +bigint *bi_mod_power2(BI_CTX *ctx, bigint *bi, bigint *bim, bigint *biexp);
1488 +int bi_compare(bigint *bia, bigint *bib);
1489 +void bi_set_mod(BI_CTX *ctx, bigint *bim, int mod_offset);
1490 +void bi_free_mod(BI_CTX *ctx, int mod_offset);
1491 +
1492 +/**
1493 + * @def bi_mod
1494 + * Find the residue of B. bi_set_mod() must be called before hand.
1495 + */
1496 +#define bi_mod(A, B) bi_divide(A, B, ctx->bi_mod[ctx->mod_offset], 1)
1497 +
1498 +#define bi_residue(A, B) bi_mod(A, B)
1499 +
1500 +#define bi_square(A, B) bi_multiply(A, bi_copy(B), B)
1501 +
1502 +#endif
1503 +
1504 --- /dev/null
1505 +++ b/net/rsa/bigint_impl.h
1506 @@ -0,0 +1,109 @@
1507 +/*
1508 + * Copyright(C) 2006
1509 + *
1510 + * This library is free software; you can redistribute it and/or modify
1511 + * it under the terms of the GNU Lesser General Public License as published by
1512 + * the Free Software Foundation; either version 2.1 of the License, or
1513 + * (at your option) any later version.
1514 + *
1515 + * This library is distributed in the hope that it will be useful,
1516 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
1517 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1518 + * GNU Lesser General Public License for more details.
1519 + *
1520 + * You should have received a copy of the GNU Lesser General Public License
1521 + * along with this library; if not, write to the Free Software
1522 + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
1523 + */
1524 +
1525 +#ifndef BIGINT_IMPL_HEADER
1526 +#define BIGINT_IMPL_HEADER
1527 +
1528 +#include <linux/types.h>
1529 +#include <common.h>
1530 +
1531 +/* Maintain a number of precomputed variables when doing reduction */
1532 +#define BIGINT_M_OFFSET 0 /**< Normal modulo offset. */
1533 +#ifdef CONFIG_BIGINT_CRT
1534 +#define BIGINT_P_OFFSET 1 /**< p modulo offset. */
1535 +#define BIGINT_Q_OFFSET 2 /**< q module offset. */
1536 +#define BIGINT_NUM_MODS 3 /**< The number of modulus constants used. */
1537 +#else
1538 +#define BIGINT_NUM_MODS 1
1539 +#endif
1540 +
1541 +/* Architecture specific functions for big ints */
1542 +// #ifdef WIN32
1543 +// #define COMP_RADIX 4294967296i64
1544 +// #define COMP_BIG_MSB 0x8000000000000000i64
1545 +// #else
1546 +#define COMP_RADIX 4294967296ULL /**< Max component + 1 */
1547 +#define COMP_BIG_MSB 0x8000000000000000ULL /**< (Max dbl comp + 1)/ 2 */
1548 +//#endif
1549 +#define COMP_BIT_SIZE 32 /**< Number of bits in a component. */
1550 +#define COMP_BYTE_SIZE 4 /**< Number of bytes in a component. */
1551 +#define COMP_NUM_NIBBLES 8 /**< Used For diagnostics only. */
1552 +
1553 +typedef uint32_t comp; /**< A single precision component. */
1554 +typedef uint64_t long_comp; /**< A double precision component. */
1555 +typedef int64_t slong_comp; /**< A signed double precision component. */
1556 +
1557 +/**
1558 + * @struct _bigint
1559 + * @brief A big integer basic object
1560 + */
1561 +struct _bigint
1562 +{
1563 + struct _bigint* next; /**< The next bigint in the cache. */
1564 + short size; /**< The number of components in this bigint. */
1565 + short max_comps; /**< The heapsize allocated for this bigint */
1566 + int refs; /**< An internal reference count. */
1567 + comp* comps; /**< A ptr to the actual component data */
1568 +};
1569 +
1570 +typedef struct _bigint bigint; /**< An alias for _bigint */
1571 +
1572 +/**
1573 + * Maintains the state of the cache, and a number of variables used in
1574 + * reduction.
1575 + */
1576 +typedef struct /**< A big integer "session" context. */
1577 +{
1578 + bigint *active_list; /**< Bigints currently used. */
1579 + bigint *free_list; /**< Bigints not used. */
1580 + bigint *bi_radix; /**< The radix used. */
1581 + bigint *bi_mod[BIGINT_NUM_MODS]; /**< modulus */
1582 +
1583 +#if defined(CONFIG_BIGINT_MONTGOMERY)
1584 + bigint *bi_RR_mod_m[BIGINT_NUM_MODS]; /**< R^2 mod m */
1585 + bigint *bi_R_mod_m[BIGINT_NUM_MODS]; /**< R mod m */
1586 + comp N0_dash[BIGINT_NUM_MODS];
1587 +#elif defined(CONFIG_BIGINT_BARRETT)
1588 + bigint *bi_mu[BIGINT_NUM_MODS]; /**< Storage for mu */
1589 +#endif
1590 + bigint *bi_normalised_mod[BIGINT_NUM_MODS]; /**< Normalised mod storage. */
1591 + bigint **g; /**< Used by sliding-window. */
1592 + int window; /**< The size of the sliding window */
1593 +
1594 + int active_count; /**< Number of active bigints. */
1595 + int free_count; /**< Number of free bigints. */
1596 +
1597 +#ifdef CONFIG_BIGINT_MONTGOMERY
1598 + uint8_t use_classical; /**< Use classical reduction. */
1599 +#endif
1600 + uint8_t mod_offset; /**< The mod offset we are using */
1601 +} BI_CTX;
1602 +
1603 +#if 0
1604 +#define max(a,b) ((a)>(b)?(a):(b)) /**< Find the maximum of 2 numbers. */
1605 +#define min(a,b) ((a)<(b)?(a):(b)) /**< Find the minimum of 2 numbers. */
1606 +#endif
1607 +
1608 +#define PERMANENT 0x7FFF55AA /**< A magic number for permanents. */
1609 +
1610 +#define V1 v->comps[v->size-1] /**< v1 for division */
1611 +#define V2 v->comps[v->size-2] /**< v2 for division */
1612 +#define U(j) tmp_u->comps[tmp_u->size-j-1] /**< uj for division */
1613 +#define Q(j) quotient->comps[quotient->size-j-1] /**< qj for division */
1614 +
1615 +#endif
1616 --- /dev/null
1617 +++ b/net/rsa/div64.h
1618 @@ -0,0 +1,113 @@
1619 +/*
1620 + * Copyright (C) 2000, 2004 Maciej W. Rozycki
1621 + * Copyright (C) 2003 Ralf Baechle
1622 + *
1623 + * This file is subject to the terms and conditions of the GNU General Public
1624 + * License. See the file "COPYING" in the main directory of this archive
1625 + * for more details.
1626 + */
1627 +#ifndef _ASM_DIV64_H
1628 +#define _ASM_DIV64_H
1629 +
1630 +#if (_MIPS_SZLONG == 32)
1631 +
1632 +#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
1633 +#define GCC_REG_ACCUM "$0"
1634 +#else
1635 +#define GCC_REG_ACCUM "accum"
1636 +#endif
1637 +
1638 +
1639 +//#include <asm/compiler.h>
1640 +
1641 +/*
1642 + * No traps on overflows for any of these...
1643 + */
1644 +
1645 +#define do_div64_32(res, high, low, base) ({ \
1646 + unsigned long __quot, __mod; \
1647 + unsigned long __cf, __tmp, __tmp2, __i; \
1648 + \
1649 + __asm__(".set push\n\t" \
1650 + ".set noat\n\t" \
1651 + ".set noreorder\n\t" \
1652 + "move %2, $0\n\t" \
1653 + "move %3, $0\n\t" \
1654 + "b 1f\n\t" \
1655 + " li %4, 0x21\n" \
1656 + "0:\n\t" \
1657 + "sll $1, %0, 0x1\n\t" \
1658 + "srl %3, %0, 0x1f\n\t" \
1659 + "or %0, $1, %5\n\t" \
1660 + "sll %1, %1, 0x1\n\t" \
1661 + "sll %2, %2, 0x1\n" \
1662 + "1:\n\t" \
1663 + "bnez %3, 2f\n\t" \
1664 + " sltu %5, %0, %z6\n\t" \
1665 + "bnez %5, 3f\n" \
1666 + "2:\n\t" \
1667 + " addiu %4, %4, -1\n\t" \
1668 + "subu %0, %0, %z6\n\t" \
1669 + "addiu %2, %2, 1\n" \
1670 + "3:\n\t" \
1671 + "bnez %4, 0b\n\t" \
1672 + " srl %5, %1, 0x1f\n\t" \
1673 + ".set pop" \
1674 + : "=&r" (__mod), "=&r" (__tmp), "=&r" (__quot), "=&r" (__cf), \
1675 + "=&r" (__i), "=&r" (__tmp2) \
1676 + : "Jr" (base), "0" (high), "1" (low)); \
1677 + \
1678 + (res) = __quot; \
1679 + __mod; })
1680 +
1681 +#define do_div(n, base) ({ \
1682 + unsigned long long __quot; \
1683 + unsigned long __mod; \
1684 + unsigned long long __div; \
1685 + unsigned long __upper, __low, __high, __base; \
1686 + \
1687 + __div = (n); \
1688 + __base = (base); \
1689 + \
1690 + __high = __div >> 32; \
1691 + __low = __div; \
1692 + __upper = __high; \
1693 + \
1694 + if (__high) \
1695 + __asm__("divu $0, %z2, %z3" \
1696 + : "=h" (__upper), "=l" (__high) \
1697 + : "Jr" (__high), "Jr" (__base) \
1698 + : GCC_REG_ACCUM); \
1699 + \
1700 + __mod = do_div64_32(__low, __upper, __low, __base); \
1701 + \
1702 + __quot = __high; \
1703 + __quot = __quot << 32 | __low; \
1704 + (n) = __quot; \
1705 + __mod; })
1706 +#endif /* (_MIPS_SZLONG == 32) */
1707 +
1708 +#if (_MIPS_SZLONG == 64)
1709 +
1710 +/*
1711 + * Hey, we're already 64-bit, no
1712 + * need to play games..
1713 + */
1714 +#define do_div(n, base) ({ \
1715 + unsigned long __quot; \
1716 + unsigned int __mod; \
1717 + unsigned long __div; \
1718 + unsigned int __base; \
1719 + \
1720 + __div = (n); \
1721 + __base = (base); \
1722 + \
1723 + __mod = __div % __base; \
1724 + __quot = __div / __base; \
1725 + \
1726 + (n) = __quot; \
1727 + __mod; })
1728 +
1729 +#endif /* (_MIPS_SZLONG == 64) */
1730 +
1731 +#endif /* _ASM_DIV64_H */
1732 --- /dev/null
1733 +++ b/net/rsa/dump_key.c
1734 @@ -0,0 +1,29 @@
1735 +#include <stdio.h>
1736 +#include <stdlib.h>
1737 +#include <sys/types.h>
1738 +#include <sys/stat.h>
1739 +#include <unistd.h>
1740 +
1741 +int main(int argc, char **argv)
1742 +{
1743 + FILE *fp = fopen("public_fon_rsa_key_6.pem", "r");
1744 + struct stat s;
1745 + unsigned char *b;
1746 + int i;
1747 + if(!fp)
1748 + return 1;
1749 + stat("public_fon_rsa_key_6.pem", &s);
1750 + b = malloc(s.st_size);
1751 + fread(b, s.st_size, 1, fp);
1752 + fclose(fp);
1753 + printf("unsigned char public_key[] = {\n\t");
1754 + for(i = 0;i < s.st_size; i++)
1755 + {
1756 + printf("0x%02X,", b[i]);
1757 + if(i%16 == 15)
1758 + printf("\n\t");
1759 + }
1760 + printf("};\n");
1761 +// printf("\n%d %d\n", i, s.st_size);
1762 + return 0;
1763 +}
1764 --- /dev/null
1765 +++ b/net/rsa/foncheckrsa.c
1766 @@ -0,0 +1,79 @@
1767 +/*
1768 + * RSA + RIPEMD160 signature verification command
1769 + *
1770 + * Copyright (C) 2007 FON Wireless Ltd.
1771 + *
1772 + * This program is free software; you can redistribute it and/or
1773 + * modify it under the terms of the GNU General Public License
1774 + * as published by the Free Software Foundation; either version 2
1775 + * of the License, or (at your option) any later version.
1776 + *
1777 + * This program is distributed in the hope that it will be useful,
1778 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
1779 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1780 + * GNU General Public License for more details.
1781 + *
1782 + * You should have received a copy of the GNU General Public License
1783 + * along with this program; if not, write to the Free Software
1784 + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
1785 + *
1786 + * Created: 20060728 Pablo Martín Medrano <pablo@fon.com>
1787 + *
1788 + * $Id: foncheckrsa.c 332 2007-05-02 09:45:54Z pablo.martin $
1789 + */
1790 +#include <stdio.h>
1791 +#include <stdlib.h>
1792 +#include <sys/types.h>
1793 +#include <sys/stat.h>
1794 +#include <fcntl.h>
1795 +#include <string.h>
1796 +#include <errno.h>
1797 +#include <unistd.h>
1798 +#include "fonrsa.h"
1799 +
1800 +int main(int argc, char **argv)
1801 +{
1802 + int fd, i;
1803 + FONRSA_ERROR fonrsa_error;
1804 + void *handle;
1805 +
1806 + if (argc != 4) {
1807 + fprintf(stderr, " Usage: foncheckrsa [public_key.der] [signature] [file]\n");
1808 + fprintf(stderr, " Pablo Martín Medrano <pablo@fon.com>\n");
1809 + fprintf(stderr, " RIPEMD-160 software written by Antoon Bosselaers,\n");
1810 + fprintf(stderr, " available at http://www.esat.kuleuven.be/~cosicart/ps/AB-9601/.\n");
1811 + fprintf(stderr, " Uses the axTLS library bigint implementation (libfonrsa)\n");
1812 + fprintf(stderr, " http://www.leroc.com.au/axTLS/\n");
1813 + return -1;
1814 + }
1815 + /* Check the existence of input files */
1816 + for (i = 1; i < 4; i++) {
1817 + if ((fd = open(argv[i], O_RDONLY)) == -1) {
1818 + fprintf(stderr, "Error: opening \"%s\": %s\n", argv[i],
1819 + strerror(errno));
1820 + fprintf(stderr, "Bailing out...");
1821 + exit(-2);
1822 + }
1823 + close(fd);
1824 + }
1825 + handle = FR_init(argv[1]);
1826 + if (handle == NULL) {
1827 + printf("Error loading keys in %s\n", argv[1]);
1828 + return 1;
1829 + }
1830 + fonrsa_error = FR_verify_file(handle, argv[3], argv[2]);
1831 + FR_end(handle);
1832 + switch (fonrsa_error) {
1833 + case FONRSA_OK:
1834 + printf("Verified OK\n");
1835 + return 0;
1836 + case FONRSA_VERIFICATION_FAILURE:
1837 + printf("Verification failure\n");
1838 + return 1;
1839 + default:
1840 + printf("Verification error\n");
1841 + return -1;
1842 + }
1843 + return -1;
1844 +}
1845 +
1846 --- /dev/null
1847 +++ b/net/rsa/fonrsa.c
1848 @@ -0,0 +1,584 @@
1849 +/*
1850 + * FONSM RSA handling library
1851 + *
1852 + * This file is part of FONUCS. Copyright (C) 2007 FON Wireless Ltd.
1853 + *
1854 + * This library is free software; you can redistribute it and/or modify
1855 + * it under the terms of the GNU Lesser General Public License as published by
1856 + * the Free Software Foundation; either version 2 of the License, or
1857 + * (at your option) any later version.
1858 + *
1859 + * This library is distributed in the hope that it will be useful,
1860 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
1861 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1862 + * GNU Lesser General Public License for more details.
1863 + *
1864 + * You should have received a copy of the GNU Lesser General Public License
1865 + * along with this library; if not, write to the Free Software
1866 + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
1867 + *
1868 + * Created: 20070306 Pablo Martin Medrano <pablo@fon.com>
1869 + *
1870 + * Based on axTLS
1871 + *
1872 + * $Id: fonrsa.c 405 2007-09-19 15:26:17Z jesus.pico $
1873 + */
1874 +#include <sys/types.h>
1875 +#include <stdlib.h>
1876 +#include <stdio.h>
1877 +#include <string.h>
1878 +#include <sys/types.h>
1879 +#include <sys/stat.h>
1880 +#include <fcntl.h>
1881 +#include <unistd.h>
1882 +#include <errno.h>
1883 +#include "rmd160.h"
1884 +#include "bigint.h"
1885 +#include "fonrsa.h"
1886 +#include "base64.h"
1887 +
1888 +typedef struct {
1889 + uint8_t *buffer;
1890 + size_t size;
1891 +} DER_key;
1892 +
1893 +typedef struct {
1894 + bigint *m; /* modulus */
1895 + bigint *e; /* public exponent */
1896 + int num_octets;
1897 + BI_CTX *bi_ctx; /* big integer handle */
1898 +} RSA_parameters;
1899 +
1900 +typedef struct {
1901 + DER_key *derkey;
1902 + RSA_parameters *rsaparms;
1903 +} RSA;
1904 +
1905 +static uint8_t *CH_load_raw_file(char *filename, size_t *size);
1906 +static DER_key *CH_load_der_key(char *filename);
1907 +static void CH_free_der_key(DER_key *key);
1908 +static int asn1_get_public_key(const uint8_t *buf, int len, RSA_parameters **rsa_parameters);
1909 +void CH_pub_key_new(RSA_parameters **rsa_parameters, const uint8_t *modulus, int mod_len, const uint8_t *pub_exp, int pub_len);
1910 +int CH_decrypt(RSA_parameters *rsa, uint8_t *buffer_in, uint8_t *buffer_out);
1911 +byte *RMDbinary(char *fname);
1912 +int CH_get_rmd160_hash_from_signature(byte *hash, char *signature_file, char *public_key_file);
1913 +static unsigned char *load_file_in_buffer(char *path, int *size);
1914 +static int save_file_from_buffer(char *path, unsigned char *buffer, int size);
1915 +int ExtractPadding(uint8_t* OutputBuffer, uint8_t* InputBuffer, int LengthOfInputBuffer);
1916 +
1917 +#define RMDsize 160 /* A RIPEMD-160 hash has 160 bits */
1918 +
1919 +/*
1920 + * returns RMD(message in file fname) fname is read as binary data.
1921 + * non-reentrant
1922 + */
1923 +byte *RMDbinary(char *fname)
1924 +{
1925 + FILE *mf; /* pointer to file <fname> */
1926 + byte data[1024]; /* contains current mess. block */
1927 + dword nbytes; /* length of this block */
1928 + dword MDbuf[RMDsize / 32]; /* contains (A, B, C, D(, E)) */
1929 + static byte hashcode[RMDsize / 8]; /* for final hash-value */
1930 + dword X[16]; /* current 16-word chunk */
1931 + unsigned int i, j; /* counters */
1932 + dword length[2]; /* length in bytes of message */
1933 + dword offset; /* # of unprocessed bytes at */
1934 + /* call of MDfinish */
1935 +
1936 + /* initialize */
1937 + if ((mf = fopen(fname, "rb")) == NULL) {
1938 + fprintf(stderr, "\nRMDbinary: cannot open file \"%s\".\n",
1939 + fname);
1940 + exit(1);
1941 + }
1942 + MDinit(MDbuf);
1943 + length[0] = 0;
1944 + length[1] = 0;
1945 + while ((nbytes = fread(data, 1, 1024, mf)) != 0) {
1946 + /* process all complete blocks */
1947 + for (i = 0; i < (nbytes >> 6); i++) {
1948 + for (j = 0; j < 16; j++)
1949 + X[j] = BYTES_TO_DWORD(data + 64 * i + 4 * j);
1950 + compress(MDbuf, X);
1951 + }
1952 + /* update length[] */
1953 + if (length[0] + nbytes < length[0])
1954 + length[1]++; /* overflow to msb of length */
1955 + length[0] += nbytes;
1956 + }
1957 + /* finish: */
1958 + offset = length[0] & 0x3C0; /* extract bytes 6 to 10 inclusive */
1959 + MDfinish(MDbuf, data + offset, length[0], length[1]);
1960 +
1961 + for (i = 0; i < RMDsize / 8; i += 4) {
1962 + hashcode[i] = MDbuf[i >> 2];
1963 + hashcode[i + 1] = (MDbuf[i >> 2] >> 8);
1964 + hashcode[i + 2] = (MDbuf[i >> 2] >> 16);
1965 + hashcode[i + 3] = (MDbuf[i >> 2] >> 24);
1966 + }
1967 + fclose(mf);
1968 +
1969 + return (byte *) hashcode;
1970 +}
1971 +byte *RMDbinary_buffer(char *buffer, int size_buffer)
1972 +{
1973 + return NULL;
1974 +}
1975 +
1976 +/*
1977 + * Extracts the RMD 160 hash from the signature file
1978 + */
1979 +int CH_get_rmd160_hash_from_signature(byte *hash, char *signature_file, char *public_key_file)
1980 +{
1981 + RSA_parameters *rsa_parameters;
1982 + DER_key *derkey;
1983 + uint8_t *signature;
1984 + size_t signature_size;
1985 + uint8_t *decrypted;
1986 +
1987 + signature = CH_load_raw_file(signature_file, &signature_size);
1988 + if ((signature == NULL)||(signature_size != 512)) {
1989 + fprintf(stderr, "Error: Loading signature key '%s'\n", signature_file);
1990 + exit(-1);
1991 + }
1992 + derkey = CH_load_der_key(public_key_file);
1993 + if (derkey == NULL) {
1994 + fprintf(stderr, "Error: opening DER key file '%s'\n", public_key_file);
1995 + exit(-1);
1996 + }
1997 + if ((asn1_get_public_key(derkey->buffer, derkey->size, &rsa_parameters)) != 0) {
1998 + fprintf(stderr, "Error: Extracting public key from DER file\n");
1999 + exit(-1);
2000 + }
2001 + CH_free_der_key(derkey);
2002 + if (rsa_parameters->num_octets != 512)
2003 + fprintf(stderr, "Error: The RSA public key size is not 4096 bits %d\n", rsa_parameters->num_octets);
2004 + decrypted = (uint8_t *)malloc(rsa_parameters->num_octets);
2005 + if (CH_decrypt(rsa_parameters, signature, decrypted)) {
2006 + fprintf(stderr, "Error: Decrypting signature\n");
2007 + exit(-1);
2008 + }
2009 + memcpy(hash, decrypted + 492, 20);
2010 + free(decrypted);
2011 + free(signature);
2012 + return 0;
2013 +}
2014 +
2015 +/*
2016 + * Decrypts the signature buffer using the rsa public key loaded
2017 + */
2018 +int CH_decrypt(RSA_parameters *rsa, uint8_t *buffer_in, uint8_t *buffer_out)
2019 +{
2020 + bigint *dat_bi;
2021 + bigint *decrypted_bi;
2022 + int byte_size;
2023 +
2024 + byte_size = rsa->num_octets;
2025 + dat_bi = bi_import(rsa->bi_ctx, buffer_in, byte_size);
2026 + rsa->bi_ctx->mod_offset = BIGINT_M_OFFSET;
2027 + bi_copy(rsa->m);
2028 + decrypted_bi = bi_mod_power(rsa->bi_ctx, dat_bi, rsa->e);
2029 + bi_export(rsa->bi_ctx, decrypted_bi, buffer_out, byte_size);
2030 + return 0;
2031 +}
2032 +/*
2033 + * Loads a file in a uint8_t buffer
2034 + */
2035 +static uint8_t *CH_load_raw_file(char *filename, size_t *size)
2036 +{
2037 + struct stat st;
2038 + int fd;
2039 + ssize_t br;
2040 + uint8_t *ret;
2041 +
2042 + if ((stat(filename, &st)) == -1)
2043 + return NULL;
2044 + if ((ret = (uint8_t *)malloc(st.st_size)) == NULL)
2045 + return NULL;
2046 + fd = open(filename, O_RDONLY);
2047 + if (fd == -1) {
2048 + free(ret);
2049 + return NULL;
2050 + }
2051 + br = read(fd, ret, st.st_size);
2052 + close(fd);
2053 + if (br != st.st_size) {
2054 + free(ret);
2055 + return NULL;
2056 + }
2057 + *size = st.st_size;
2058 + return ret;
2059 +}
2060 +/*
2061 + * Loads a .der file in a buffer
2062 + */
2063 +static DER_key *CH_load_der_key(char *filename)
2064 +{
2065 + DER_key *ret;
2066 +
2067 + if ((ret = (DER_key *)malloc(sizeof(DER_key))) == NULL)
2068 + return NULL;
2069 + if ((ret->buffer = CH_load_raw_file(filename, &(ret->size))) == NULL) {
2070 + free(ret);
2071 + return NULL;
2072 + }
2073 + return ret;
2074 +}
2075 +/*
2076 + * CH_load_pem_key
2077 + */
2078 +static DER_key *CH_load_pem_key(char *filename)
2079 +{
2080 + DER_key *ret;
2081 + uint8_t *buffer;
2082 + char *b64,*p,*t;
2083 + char key[1024];
2084 + size_t filesize;
2085 + int size;
2086 +
2087 + if ((ret = (DER_key *)malloc(sizeof(DER_key))) == NULL)
2088 + return NULL;
2089 + if ((buffer = CH_load_raw_file(filename, &filesize)) == NULL) {
2090 + free(ret);
2091 + return NULL;
2092 + }
2093 + p = (char *)buffer;
2094 + while ((*p != '\n') && (*p != '\0'))
2095 + p++;
2096 + if (*p == '\0') {
2097 + free(ret);
2098 + return NULL;
2099 + }
2100 + p++;
2101 + b64 = t = p;
2102 + while((p - b64) <= filesize) {
2103 + if ((*p == '-')) {
2104 + break;
2105 + } else if ((*p != '\n') && (*p != ' ') && (*p != '\t')) {
2106 + *t = *p;
2107 + t++;
2108 + }
2109 + p++;
2110 + }
2111 + *t = '\0';
2112 + size = B64_decode(b64, key, strlen(b64), 1024);
2113 + if (size < 0) {
2114 + free(buffer);
2115 + free(ret);
2116 + return NULL;
2117 + }
2118 + free(buffer);
2119 + ret->buffer = (char *)malloc(size);
2120 + ret->size = size;
2121 + memcpy((void *)ret->buffer, (void *)key, size);
2122 + return ret;
2123 +}
2124 +
2125 +/*
2126 + * CH_free_der_key
2127 + */
2128 +static void CH_free_der_key(DER_key *key)
2129 +{
2130 + free(key->buffer);
2131 + free(key);
2132 +}
2133 +
2134 +/*
2135 + * Get the public key specifics from an ASN.1 encoded file
2136 + * A function lacking in the exported axTLS API
2137 + *
2138 + * This is a really weird hack that only works with RSA public key
2139 + * files
2140 + */
2141 +static int asn1_get_public_key(const uint8_t *buf, int len, RSA_parameters **rsa_parameters)
2142 +{
2143 + uint8_t *modulus, *pub_exp;
2144 + int mod_len, pub_len;
2145 +
2146 + pub_len = 3;
2147 + mod_len = len - 37;
2148 + if (buf[0] != 0x30) {
2149 + return -1;
2150 + }
2151 +
2152 + pub_exp = (uint8_t *)malloc(3);
2153 + modulus = (uint8_t *)malloc(mod_len);
2154 + memcpy(modulus, buf + 32 , mod_len);
2155 + memcpy(pub_exp, buf + 34 + mod_len, 3);
2156 + if (mod_len <= 0 || pub_len <= 0 )
2157 + return -1;
2158 + CH_pub_key_new(rsa_parameters, modulus, mod_len, pub_exp, pub_len);
2159 +
2160 + free(modulus);
2161 + free(pub_exp);
2162 + return 0;
2163 +}
2164 +
2165 +/*
2166 + * Similar to RSA_pub_key_new, rewritten to make this program depend only on bi module
2167 + */
2168 +void CH_pub_key_new(RSA_parameters **rsa, const uint8_t *modulus, int mod_len, const uint8_t *pub_exp, int pub_len)
2169 +{
2170 + RSA_parameters *rsa_parameters;
2171 +
2172 + BI_CTX *bi_ctx = bi_initialize();
2173 + *rsa = (RSA_parameters *)calloc(1, sizeof(RSA_parameters));
2174 + rsa_parameters = *rsa;
2175 + rsa_parameters->bi_ctx = bi_ctx;
2176 + rsa_parameters->num_octets = (mod_len & 0xFFF0);
2177 + rsa_parameters->m = bi_import(bi_ctx, modulus, mod_len);
2178 + bi_set_mod(bi_ctx, rsa_parameters->m, BIGINT_M_OFFSET);
2179 + rsa_parameters->e = bi_import(bi_ctx, pub_exp, pub_len);
2180 + bi_permanent(rsa_parameters->e);
2181 +}
2182 +
2183 +static unsigned char *load_file_in_buffer(char *path, int *size)
2184 +{
2185 + unsigned char *buffer;
2186 + struct stat st;
2187 + int fd;
2188 +
2189 + if (stat(path, &st))
2190 + return NULL;
2191 + buffer = (unsigned char *)malloc(st.st_size);
2192 + if (buffer == NULL)
2193 + return NULL;
2194 + if ((fd = open(path, O_RDONLY)) == -1) {
2195 + free(buffer);
2196 + return NULL;
2197 + }
2198 + if (read(fd, (void *)buffer,st.st_size) != (ssize_t)st.st_size) {
2199 + free(buffer);
2200 + close(fd);
2201 + return NULL;
2202 + }
2203 + *size = (int)st.st_size;
2204 + close(fd);
2205 + return buffer;
2206 +}
2207 +
2208 +static int save_file_from_buffer(char *path, unsigned char *buffer, int size)
2209 +{
2210 + int fd;
2211 +
2212 + if ((fd = open(path, O_WRONLY | O_CREAT, 0644)) == -1)
2213 + return -1;
2214 + if (write(fd, buffer, (size_t)size) != ((ssize_t)size)) {
2215 + close(fd);
2216 + return -1;
2217 + }
2218 + close(fd);
2219 + return 0;
2220 +}
2221 +
2222 +/* FR_init */
2223 +void *FR_init(char *public_key_path)
2224 +{
2225 + DER_key *derkey;
2226 + RSA_parameters *rsa_parameters;
2227 + char *ending;
2228 +
2229 + ending = public_key_path + strlen(public_key_path) - 3;
2230 + if (!strcmp(ending, "der"))
2231 + derkey = CH_load_der_key(public_key_path);
2232 + else if (!strcmp(ending, "pem"))
2233 + derkey = CH_load_pem_key(public_key_path);
2234 + else {
2235 + fprintf(stderr, "Error: unknown key format\n");
2236 + exit(-1);
2237 + }
2238 + if (derkey == NULL) {
2239 + fprintf(stderr, "Error: opening key file '%s'\n", public_key_path);
2240 + exit(-1);
2241 + }
2242 + if ((asn1_get_public_key(derkey->buffer, derkey->size, &rsa_parameters)) != 0) {
2243 + fprintf(stderr, "Error: Extracting public key from file\n");
2244 + exit(-1);
2245 + }
2246 + CH_free_der_key(derkey);
2247 + return (void *)rsa_parameters;
2248 +}
2249 +
2250 +/* FR_end */
2251 +FONRSA_ERROR FR_end(void *handle)
2252 +{
2253 + RSA_parameters *rsa_parameters = (RSA_parameters *)handle;
2254 +
2255 + free(rsa_parameters);
2256 + return FONRSA_OK;
2257 +}
2258 +
2259 +/* FR_decrypt_buffer */
2260 +FONRSA_ERROR FR_decrypt_buffer(void *handler, unsigned char *cryptext, int cryptext_size,
2261 + unsigned char *plaintext, int plaintext_buffer_size, int *plaintext_size)
2262 +{
2263 + RSA_parameters *rsaparms = (RSA_parameters *)handler;
2264 +
2265 + if (cryptext_size != rsaparms->num_octets) {
2266 + return FONRSA_SIZE;
2267 + }
2268 + if (plaintext_buffer_size < cryptext_size) {
2269 + return FONRSA_SIZE;
2270 + }
2271 + if (CH_decrypt(rsaparms, (uint8_t *)cryptext, (uint8_t *)plaintext)) {
2272 + return FONRSA_DECRYPT;
2273 + }
2274 + *plaintext_size = cryptext_size;
2275 + return FONRSA_OK;
2276 +}
2277 +
2278 +FONRSA_ERROR FR_decrypt_buffer_v2(void *handler, unsigned char *cryptext, int cryptext_size,
2279 + unsigned char *plaintext, int plaintext_buffer_size, int *plaintext_size)
2280 +{
2281 + unsigned char* AuxBuffer;
2282 + int AuxSize;
2283 +
2284 + AuxBuffer = (unsigned char*)malloc(cryptext_size);
2285 +
2286 + RSA_parameters *rsaparms = (RSA_parameters *)handler;
2287 +
2288 + if (cryptext_size != rsaparms->num_octets) {
2289 + return FONRSA_SIZE;
2290 + }
2291 + if (plaintext_buffer_size < cryptext_size) {
2292 + return FONRSA_SIZE;
2293 + }
2294 + if (CH_decrypt(rsaparms, (uint8_t *)cryptext, (uint8_t *)AuxBuffer)) {
2295 + return FONRSA_DECRYPT;
2296 + }
2297 + if ((AuxSize = ExtractPadding((uint8_t*)plaintext, (uint8_t*)AuxBuffer, cryptext_size)) < 0)
2298 + {
2299 + printf("Incorrect Padding decrypting buffer");
2300 + return FONRSA_DECRYPT;
2301 + }
2302 + *plaintext_size = AuxSize;
2303 + return FONRSA_OK;
2304 +}
2305 +
2306 +/*
2307 + *
2308 + * Implementation of PKCS 1.5 padding, borrowed from
2309 + * Tom's code (public domain)
2310 + */
2311 +
2312 +/* Standalone FR_verify_file */
2313 +FONRSA_ERROR FR_verify_file(void *handler, char *file_path, char *signature_file_path)
2314 +{
2315 + int j;
2316 + byte *hashcode;
2317 + byte hash[20];
2318 + uint8_t *decrypted;
2319 + RSA_parameters *rsa_parameters = (RSA_parameters *)handler;
2320 + char *signature_buffer;
2321 + int signature_size;
2322 +
2323 + /* Calculates the RIPEMD-160 hash of the file */
2324 + hashcode = RMDbinary (file_path);
2325 + /* Decrypts the signature file using the RSA public key */
2326 + signature_buffer = load_file_in_buffer(signature_file_path, &signature_size);
2327 + if (signature_buffer == NULL)
2328 + return FONRSA_OPENKEY;
2329 +
2330 + if (rsa_parameters->num_octets != signature_size)
2331 + return FONRSA_SIZE;
2332 + decrypted = (uint8_t *)malloc(rsa_parameters->num_octets);
2333 + if (CH_decrypt(rsa_parameters, signature_buffer, decrypted)) {
2334 + fprintf(stderr, "Error: Decrypting signature\n");
2335 + exit(-1);
2336 + }
2337 + memcpy(hash, decrypted + 492, 20);
2338 + free(decrypted);
2339 + free(signature_buffer);
2340 + for (j = 0; j < RMDsize/8; j++) {
2341 + if (hash[j] != hashcode[j])
2342 + return FONRSA_VERIFICATION_FAILURE;
2343 + }
2344 + return FONRSA_OK;
2345 +}
2346 +
2347 +/* FR_decrypt_file */
2348 +FONRSA_ERROR FR_decrypt_file(void *handle, char *crypted_file_path, char *plaintext_file_path)
2349 +{
2350 + int size;
2351 + FONRSA_ERROR ret;
2352 + char *filebuffer;
2353 + char crypted[1024];
2354 + int crypted_size;
2355 +
2356 + if ((filebuffer = load_file_in_buffer(crypted_file_path, &size)) == NULL) {
2357 + return FONRSA_LOADFILE;
2358 + }
2359 +
2360 + ret = FR_decrypt_buffer(handle, filebuffer, size, crypted, 1024, &crypted_size);
2361 + if (ret != FONRSA_OK) {
2362 + free(filebuffer);
2363 + return ret;
2364 + }
2365 + free(filebuffer);
2366 +
2367 + if (save_file_from_buffer(plaintext_file_path, crypted, crypted_size)) {
2368 + printf("Error writing %lu bytes into %s", crypted_size, plaintext_file_path);
2369 + return FONRSA_SAVEFILE;
2370 + }
2371 + return FONRSA_OK;
2372 +}
2373 +
2374 +int ExtractPadding(uint8_t* OutputBuffer, uint8_t* InputBuffer, int LengthOfInputBuffer)
2375 +{
2376 + int i;
2377 +
2378 + //First typical checks...
2379 + if (LengthOfInputBuffer < MINIMUM_PADING_BYTES_PKCS_1_5)
2380 + {
2381 + fprintf(stderr, "Error:ExtractPadding: Error, Length of input buffer is too short.\n");
2382 + return -1;
2383 + }
2384 + else if((InputBuffer[0] != 0) || (InputBuffer[1] > 2)) //Necessary header of Padding...
2385 + {
2386 + fprintf(stderr, "Error:ExtractPadding: Error, Padding header is incorrect.\n");
2387 + return -1;
2388 + }
2389 + for (i=2; i < LengthOfInputBuffer; i++) //Variable size of non-zero padding....
2390 + {
2391 + if (InputBuffer[i] == 0) break; //This is the end of Padding.
2392 + }
2393 + //We need to evaluate if there is an existing message...
2394 + if (i < LengthOfInputBuffer - 2)
2395 + {//Ok, Padding is extracted... copying the message and finishing...
2396 + memcpy(OutputBuffer, &(InputBuffer[i + 1]), LengthOfInputBuffer - (i + 1));
2397 + return LengthOfInputBuffer - (i + 1);
2398 + }
2399 + //If we have reached to this point, then an error has occurred...
2400 + return -1;
2401 +}
2402 +
2403 +#ifdef __MAINTEST__
2404 +int main(int argc, char **argv)
2405 +{
2406 + void *handle = NULL;
2407 + FONRSA_ERROR ret;
2408 + char *filebuffer = NULL;
2409 + char crypted[1024];
2410 + int size, crypted_size;
2411 +
2412 + if (argc != 4) {
2413 + printf("Usage: %s <key_file> <crypted_file> <output_file>\n", argv[0]);
2414 + return 1;
2415 + }
2416 +
2417 + handle = FR_init(argv[1]);
2418 + if (handle == NULL) {
2419 + printf("Error loading keys\n");
2420 + return 1;
2421 + }
2422 + ret = FR_decrypt_file(handle, argv[2], argv[3]);
2423 + if (ret != FONRSA_OK) {
2424 + printf("FR_decrypt_file returns %d\n", ret);
2425 + }
2426 + FR_end(handle);
2427 + return (int)ret;
2428 +}
2429 +
2430 +#endif
2431 +
2432 +
2433 --- /dev/null
2434 +++ b/net/rsa/fonrsa.h
2435 @@ -0,0 +1,53 @@
2436 +/*
2437 + * FONSM RSA handling library, used by fonsmcd and foncheckrsa
2438 + *
2439 + * This file is part of FONUCS. Copyright (C) 2007 FON Wireless Ltd.
2440 + *
2441 + * This library is free software; you can redistribute it and/or modify
2442 + * it under the terms of the GNU Lesser General Public License as published by
2443 + * the Free Software Foundation; either version 2 of the License, or
2444 + * (at your option) any later version.
2445 + *
2446 + * This library is distributed in the hope that it will be useful,
2447 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
2448 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
2449 + * GNU Lesser General Public License for more details.
2450 + *
2451 + * You should have received a copy of the GNU Lesser General Public License
2452 + * along with this library; if not, write to the Free Software
2453 + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
2454 + *
2455 + * Created: 20070306 Pablo Martin Medrano <pablo@fon.com>
2456 + *
2457 + * $Id: fonrsa.h 404 2007-09-17 10:41:31Z jesus.pico $
2458 + */
2459 +#ifndef _FONRSA_H
2460 +#define _FONRSA_H
2461 +
2462 +#define MINIMUM_PADING_BYTES_PKCS_1_5 3
2463 +
2464 +typedef enum {
2465 + FONRSA_OK = 0,
2466 + FONRSA_VERIFICATION_FAILURE = 1,
2467 + FONRSA_OPENKEY = 2,
2468 + FONRSA_SIZE = 3,
2469 + FONRSA_LOADFILE = 4,
2470 + FONRSA_CRYPT = 5,
2471 + FONRSA_DECRYPT = 6,
2472 + FONRSA_SAVEFILE = 7,
2473 + FONRSA_NOSYS = 8,
2474 + FONRSA_VERIFY = 9
2475 +} FONRSA_ERROR;
2476 +
2477 +void *FR_init(char *public_key_path);
2478 +FONRSA_ERROR FR_end(void *handle);
2479 +FONRSA_ERROR FR_decrypt_buffer(void *handler, unsigned char *cryptext, int cryptext_size,
2480 + unsigned char *plaintext, int plaintext_buffer_size, int *plaintext_size);
2481 +FONRSA_ERROR FR_decrypt_buffer_v2(void *handler, unsigned char *cryptext, int cryptext_size,
2482 + unsigned char *plaintext, int plaintext_buffer_size, int *plaintext_size);
2483 +FONRSA_ERROR FR_verify_file(void *handler, char *file_path, char *signature_file_path);
2484 +FONRSA_ERROR FR_decrypt_file(void *handler, char *crypted_file_path, char *plaintext_file_path);
2485 +
2486 +#endif
2487 +
2488 +
2489 --- /dev/null
2490 +++ b/net/rsa/log.c
2491 @@ -0,0 +1,138 @@
2492 +/*
2493 + * Fonsm log module. Used inside the fonsm backend module and on the client.
2494 + *
2495 + * This file is part of FONUCS. Copyright (C) 2007 FON Wireless Ltd.
2496 + *
2497 + * Created: 20070202 Pablo Martin Medrano <pablo@fon.com>
2498 + *
2499 + * $Id: log.c 392 2007-06-25 16:24:51Z pablo.martin $
2500 + */
2501 +#include <stdio.h>
2502 +#include <string.h>
2503 +#include <stdlib.h>
2504 +#include <stdarg.h>
2505 +#include <unistd.h>
2506 +#ifndef WIN32
2507 +#include <syslog.h>
2508 +#endif
2509 +#include "log.h"
2510 +
2511 +#define MAX_SESSION_PREFIX 256
2512 +
2513 +typedef struct {
2514 + char domain[256];
2515 + LG_LEVEL watermark;
2516 + int mode;
2517 + LG_log_function_pointer function;
2518 +} ST_fslog;
2519 +
2520 +static ST_fslog fslog;
2521 +static void LG_log_string(LG_LEVEL level, const char *message);
2522 +
2523 +/*!
2524 + \brief Starts the log subsystem, redirecting glog() to stderr/syslog depending
2525 + on mode
2526 + \retval FSLOG_ERROR : FSLOG_OK if everything goes well
2527 + \param lg : handle that will be returned
2528 + \param ident : program identifier, any string
2529 + \param low_watermark : if the log level is less than this value, it will not be logged
2530 + \param mode : FSLOG_MODE_SYSLOG (log to syslog) or FSLOG_MODE_STDERR (log to stderr)
2531 +*/
2532 +FSLOG_ERROR LG_start(const char *domain, LG_LEVEL watermark, int mode,
2533 + LG_log_function_pointer log_function, int facility)
2534 +{
2535 +#ifndef WIN32
2536 + strncpy(fslog.domain, domain, MAX_LG_DOMAIN);
2537 + fslog.domain[MAX_LG_DOMAIN - 1] = '\0';
2538 + fslog.watermark = watermark;
2539 + fslog.mode = mode;
2540 + fslog.function = log_function?log_function:LG_log_string;
2541 + if (fslog.mode & LG_SYSLOG)
2542 + openlog(domain, LOG_NDELAY, facility);
2543 + return FSLOG_OK;
2544 +#else
2545 + return FSLOG_OK;
2546 +#endif
2547 +}
2548 +
2549 +/*!
2550 + \brief Set the low watermark
2551 + \retval FSLOG_ERROR : FSLOG_OK
2552 + \param lg : log handle
2553 + \param low_watermark : new watermark
2554 +*/
2555 +FSLOG_ERROR LG_set_loglevel(LG_LEVEL watermark)
2556 +{
2557 + fslog.watermark = watermark;
2558 + return FSLOG_OK;
2559 +}
2560 +
2561 +/*!
2562 + \brief Ends the log subsystem, unregisteing glog handle
2563 + \retval FSLOG_ERROR : FSLOG_OK if everything goes well
2564 + \param handle : log handle to free
2565 +*/
2566 +FSLOG_ERROR LG_end(void)
2567 +{
2568 +#ifndef WIN32
2569 + if (fslog.mode & LG_SYSLOG)
2570 + closelog();
2571 +#endif
2572 + return FSLOG_OK;
2573 +}
2574 +
2575 +
2576 +void LG_log(LG_LEVEL loglevel, const char *message, ...)
2577 +{
2578 +#ifndef WIN32
2579 + va_list ap;
2580 + char buffer[4096];
2581 + int n;
2582 +
2583 + va_start(ap, message);
2584 + n = vsnprintf(buffer, MAX_LOG_STRING, message, ap);
2585 + va_end(ap);
2586 + if (n > -1 && n < MAX_LOG_STRING)
2587 + fslog.function(loglevel, buffer);
2588 + else
2589 + fon_critical("%s: Message too big to be logged", __FUNCTION__);
2590 +#else
2591 + return;
2592 +#endif
2593 +}
2594 +
2595 +/* Default log function (when mode is LG_SYSLOG or LG_STDERR) */
2596 +static void LG_log_string(LG_LEVEL level, const char *message)
2597 +{
2598 +#ifndef WIN32
2599 + static struct {
2600 + int syslog_level;
2601 + char *log_string;
2602 + } fonlog_to_syslog[] = {
2603 + [LG_DEBUG] = {LOG_ERR, "DEBUG"},
2604 + [LG_MESSAGE] = {LOG_ERR, "MESSAGE"},
2605 + [LG_WARNING] = {LOG_ERR, "WARNING"},
2606 + [LG_CRITICAL] = {LOG_ERR, "CRITICAL"},
2607 + [LG_ERROR] = {LOG_ERR, "ERROR"}
2608 + };
2609 +
2610 + if (level < fslog.watermark)
2611 + return;
2612 + if (fslog.mode & LG_SYSLOG) {
2613 + if (level == LG_MESSAGE) {
2614 + syslog(LOG_INFO, "%s", message);
2615 + } else {
2616 + syslog(fonlog_to_syslog[level].syslog_level, "%s: %s", fonlog_to_syslog[level].log_string, message);
2617 + }
2618 + }
2619 + if (fslog.mode & LG_STDERR) {
2620 + fprintf(stderr, "%s[%d]: %8.8s: %s\n", fslog.domain,
2621 + getpid(), fonlog_to_syslog[level].log_string,
2622 + message);
2623 + }
2624 +#else
2625 + /* FIXE: todo */
2626 + return;
2627 +#endif
2628 +}
2629 +
2630 --- /dev/null
2631 +++ b/net/rsa/log.h
2632 @@ -0,0 +1,77 @@
2633 +/*
2634 + * Fonsm log module. Used inside the fonsm backend module and on the client.
2635 + *
2636 + * This file is part of FONUCS. Copyright (C) 2007 FON Wireless Ltd.
2637 + *
2638 + * Created: 20070202 Pablo Martin Medrano <pablo@fon.com>
2639 + *
2640 + * $Id: log.h 379 2007-05-28 09:17:48Z pablo.martin $
2641 + */
2642 +#ifndef _LOG_H
2643 +#define _LOG_H
2644 +
2645 +#ifdef __cplusplus
2646 +extern "C" {
2647 +#endif
2648 +
2649 +#include <stdarg.h>
2650 +
2651 +typedef enum {
2652 + FSLOG_OK = 0,
2653 + FSLOG_UNKNOWN = -1
2654 +} FSLOG_ERROR;
2655 +
2656 +
2657 +typedef void * LG_HANDLE;
2658 +
2659 +typedef enum {
2660 + LG_DEBUG = 0,
2661 + LG_MESSAGE = 1,
2662 + LG_INFO = 2,
2663 + LG_WARNING = 3,
2664 + LG_CRITICAL = 4,
2665 + LG_ERROR = 5
2666 +} LG_LEVEL;
2667 +
2668 +#define LG_SYSLOG 0x01
2669 +#define LG_STDERR 0x02
2670 +#define LG_CUSTOM 0x04
2671 +
2672 +#define MAX_LG_DOMAIN 256
2673 +#define MAX_LOG_STRING 4096
2674 +
2675 +#ifndef NDEBUG
2676 +#ifndef LOGPRINTF
2677 +#define fon_debug(...) LG_log (LG_DEBUG, __VA_ARGS__)
2678 +#else
2679 +#define fon_debug(...) { printf("DEBUG: "); printf(__VA_ARGS__); printf("\n"); }
2680 +#endif
2681 +#else
2682 +/* fon_debug evaluates to nothing when NDEBUG is defined */
2683 +#define fon_debug(...)
2684 +#endif
2685 +#ifndef LOGPRINTF
2686 +#define fon_message(...) LG_log (LG_MESSAGE, __VA_ARGS__)
2687 +#define fon_warning(...) LG_log (LG_WARNING, __VA_ARGS__)
2688 +#define fon_critical(...) LG_log (LG_CRITICAL, __VA_ARGS__)
2689 +#define fon_error(...) LG_log (LG_ERROR, __VA_ARGS__)
2690 +#else
2691 +#define fon_message(...) { printf("MESSAGE: "); printf(__VA_ARGS__); printf("\n"); }
2692 +#define fon_warning(...) { printf("WARNING: "); printf(__VA_ARGS__); printf("\n"); }
2693 +#define fon_critical(...) { printf("CRITICAL: "); printf(__VA_ARGS__); printf("\n"); }
2694 +#define fon_error(...) { printf("ERROR: "); printf(__VA_ARGS__); printf("\n"); }
2695 +#endif
2696 +
2697 +typedef void (*LG_log_function_pointer)(LG_LEVEL level, const char *message);
2698 +
2699 +FSLOG_ERROR LG_start(const char *domain, LG_LEVEL watermark, int mode, LG_log_function_pointer log_function, int facility);
2700 +FSLOG_ERROR LG_set_loglevel(LG_LEVEL watermark);
2701 +FSLOG_ERROR LG_end(void);
2702 +void LG_log(LG_LEVEL loglevel, const char *message, ...);
2703 +
2704 +#ifdef __cplusplus
2705 +}
2706 +#endif
2707 +
2708 +#endif
2709 +
2710 --- /dev/null
2711 +++ b/net/rsa/public_key.h
2712 @@ -0,0 +1,52 @@
2713 +unsigned char public_key[] = {
2714 + 0x2D,0x2D,0x2D,0x2D,0x2D,0x42,0x45,0x47,0x49,0x4E,0x20,0x50,0x55,0x42,0x4C,0x49,
2715 + 0x43,0x20,0x4B,0x45,0x59,0x2D,0x2D,0x2D,0x2D,0x2D,0x0A,0x4D,0x49,0x49,0x43,0x49,
2716 + 0x6A,0x41,0x4E,0x42,0x67,0x6B,0x71,0x68,0x6B,0x69,0x47,0x39,0x77,0x30,0x42,0x41,
2717 + 0x51,0x45,0x46,0x41,0x41,0x4F,0x43,0x41,0x67,0x38,0x41,0x4D,0x49,0x49,0x43,0x43,
2718 + 0x67,0x4B,0x43,0x41,0x67,0x45,0x41,0x34,0x4C,0x42,0x76,0x59,0x43,0x4B,0x38,0x38,
2719 + 0x6D,0x75,0x57,0x61,0x73,0x31,0x4F,0x53,0x73,0x71,0x30,0x0A,0x38,0x39,0x38,0x79,
2720 + 0x76,0x54,0x4B,0x71,0x41,0x6E,0x4F,0x37,0x78,0x2F,0x44,0x53,0x57,0x72,0x46,0x53,
2721 + 0x30,0x42,0x72,0x47,0x53,0x51,0x31,0x52,0x69,0x44,0x39,0x55,0x62,0x78,0x77,0x6F,
2722 + 0x64,0x76,0x36,0x65,0x51,0x4B,0x55,0x30,0x67,0x36,0x52,0x6B,0x2F,0x39,0x54,0x70,
2723 + 0x4C,0x6E,0x4F,0x2F,0x76,0x51,0x4B,0x70,0x69,0x41,0x30,0x30,0x0A,0x2B,0x32,0x59,
2724 + 0x30,0x74,0x6B,0x4C,0x39,0x73,0x6A,0x37,0x64,0x33,0x57,0x4B,0x47,0x39,0x62,0x6A,
2725 + 0x64,0x51,0x58,0x2F,0x43,0x49,0x35,0x57,0x46,0x42,0x42,0x64,0x77,0x57,0x73,0x74,
2726 + 0x4D,0x43,0x38,0x77,0x74,0x4C,0x6A,0x6A,0x45,0x59,0x79,0x43,0x58,0x46,0x32,0x31,
2727 + 0x30,0x39,0x7A,0x31,0x47,0x54,0x4C,0x73,0x53,0x44,0x34,0x57,0x4F,0x0A,0x45,0x50,
2728 + 0x6D,0x45,0x37,0x34,0x63,0x6E,0x6F,0x35,0x78,0x53,0x43,0x71,0x71,0x33,0x74,0x54,
2729 + 0x49,0x6D,0x38,0x50,0x78,0x49,0x77,0x54,0x46,0x6D,0x46,0x6F,0x6D,0x6A,0x76,0x31,
2730 + 0x4F,0x56,0x50,0x32,0x73,0x42,0x49,0x70,0x35,0x4E,0x2B,0x59,0x6F,0x56,0x61,0x53,
2731 + 0x58,0x6A,0x47,0x66,0x4E,0x63,0x54,0x36,0x4E,0x6B,0x39,0x76,0x6B,0x56,0x0A,0x57,
2732 + 0x69,0x67,0x39,0x30,0x71,0x50,0x4E,0x4C,0x58,0x6E,0x39,0x39,0x50,0x78,0x48,0x61,
2733 + 0x49,0x31,0x36,0x52,0x7A,0x78,0x48,0x4C,0x39,0x54,0x42,0x2B,0x50,0x43,0x33,0x68,
2734 + 0x33,0x61,0x58,0x33,0x71,0x57,0x30,0x4B,0x4C,0x4A,0x41,0x66,0x6F,0x35,0x70,0x48,
2735 + 0x6C,0x39,0x79,0x75,0x55,0x70,0x37,0x66,0x46,0x65,0x6A,0x4A,0x2B,0x41,0x58,0x0A,
2736 + 0x51,0x4F,0x4A,0x62,0x53,0x45,0x67,0x56,0x74,0x76,0x72,0x68,0x44,0x39,0x73,0x55,
2737 + 0x6D,0x4B,0x30,0x74,0x36,0x63,0x51,0x44,0x65,0x32,0x32,0x4E,0x4E,0x6E,0x77,0x37,
2738 + 0x43,0x4F,0x4F,0x61,0x59,0x49,0x57,0x55,0x55,0x6A,0x79,0x6A,0x68,0x35,0x50,0x4B,
2739 + 0x64,0x64,0x45,0x4B,0x5A,0x38,0x68,0x62,0x62,0x47,0x65,0x61,0x5A,0x4A,0x6F,0x76,
2740 + 0x0A,0x63,0x6F,0x51,0x64,0x55,0x56,0x51,0x6D,0x71,0x44,0x53,0x2B,0x6B,0x63,0x2F,
2741 + 0x41,0x51,0x6C,0x65,0x55,0x36,0x68,0x51,0x6A,0x63,0x55,0x4C,0x57,0x44,0x6B,0x4E,
2742 + 0x2F,0x6F,0x4F,0x6C,0x33,0x43,0x53,0x65,0x70,0x67,0x54,0x37,0x6B,0x67,0x73,0x52,
2743 + 0x63,0x63,0x47,0x74,0x66,0x4B,0x65,0x37,0x77,0x4D,0x70,0x35,0x66,0x59,0x4A,0x2B,
2744 + 0x41,0x0A,0x43,0x46,0x44,0x41,0x6F,0x4C,0x6E,0x58,0x4E,0x6A,0x4E,0x56,0x6C,0x65,
2745 + 0x73,0x43,0x6B,0x78,0x74,0x6A,0x62,0x4C,0x62,0x49,0x72,0x66,0x32,0x6E,0x43,0x62,
2746 + 0x32,0x61,0x4D,0x65,0x64,0x31,0x5A,0x48,0x4E,0x4A,0x51,0x75,0x6F,0x4E,0x58,0x67,
2747 + 0x72,0x43,0x41,0x44,0x31,0x71,0x2B,0x58,0x6E,0x66,0x77,0x63,0x69,0x6D,0x57,0x50,
2748 + 0x64,0x51,0x0A,0x44,0x59,0x6A,0x6D,0x65,0x44,0x70,0x35,0x77,0x36,0x41,0x4A,0x33,
2749 + 0x2F,0x35,0x59,0x39,0x55,0x74,0x78,0x47,0x34,0x72,0x51,0x72,0x61,0x68,0x78,0x53,
2750 + 0x42,0x77,0x43,0x4B,0x57,0x39,0x4B,0x79,0x53,0x31,0x71,0x53,0x76,0x73,0x37,0x7A,
2751 + 0x59,0x2F,0x52,0x59,0x37,0x4A,0x66,0x36,0x63,0x56,0x6B,0x54,0x43,0x78,0x69,0x33,
2752 + 0x7A,0x32,0x53,0x0A,0x50,0x46,0x33,0x51,0x64,0x6B,0x30,0x50,0x44,0x2F,0x73,0x2B,
2753 + 0x6B,0x77,0x39,0x71,0x4F,0x4E,0x79,0x69,0x33,0x67,0x6E,0x61,0x42,0x46,0x6E,0x54,
2754 + 0x77,0x48,0x7A,0x59,0x69,0x77,0x34,0x2F,0x77,0x6A,0x46,0x33,0x64,0x47,0x68,0x47,
2755 + 0x4E,0x6B,0x78,0x36,0x70,0x63,0x4E,0x4F,0x52,0x55,0x46,0x4E,0x65,0x4F,0x7A,0x59,
2756 + 0x76,0x39,0x6F,0x6A,0x0A,0x51,0x59,0x70,0x73,0x55,0x31,0x33,0x6A,0x6D,0x30,0x33,
2757 + 0x42,0x6F,0x45,0x2B,0x42,0x31,0x64,0x38,0x50,0x47,0x75,0x57,0x2B,0x49,0x7A,0x2F,
2758 + 0x41,0x4F,0x44,0x7A,0x6B,0x6F,0x56,0x6B,0x39,0x2B,0x57,0x79,0x49,0x33,0x37,0x50,
2759 + 0x30,0x53,0x7A,0x47,0x4B,0x72,0x2B,0x53,0x33,0x72,0x72,0x74,0x61,0x50,0x6C,0x41,
2760 + 0x70,0x71,0x4B,0x48,0x55,0x0A,0x6E,0x64,0x35,0x6C,0x30,0x63,0x76,0x75,0x59,0x66,
2761 + 0x31,0x4C,0x37,0x45,0x52,0x75,0x49,0x58,0x64,0x47,0x4C,0x6A,0x30,0x43,0x41,0x77,
2762 + 0x45,0x41,0x41,0x51,0x3D,0x3D,0x0A,0x2D,0x2D,0x2D,0x2D,0x2D,0x45,0x4E,0x44,0x20,
2763 + 0x50,0x55,0x42,0x4C,0x49,0x43,0x20,0x4B,0x45,0x59,0x2D,0x2D,0x2D,0x2D,0x2D,0x0A,
2764 + };
2765 --- /dev/null
2766 +++ b/net/rsa/rmd160.c
2767 @@ -0,0 +1,292 @@
2768 +/********************************************************************\
2769 + *
2770 + * FILE: rmd160.c
2771 + *
2772 + * CONTENTS: A sample C-implementation of the RIPEMD-160
2773 + * hash-function.
2774 + * TARGET: any computer with an ANSI C compiler
2775 + *
2776 + * AUTHOR: Antoon Bosselaers, ESAT-COSIC
2777 + * DATE: 1 March 1996
2778 + * VERSION: 1.0
2779 + *
2780 + * Copyright (c) Katholieke Universiteit Leuven
2781 + * 1996, All Rights Reserved
2782 + *
2783 + * Conditions for use of the RIPEMD-160 Software
2784 + *
2785 + * The RIPEMD-160 software is freely available for use under the terms and
2786 + * conditions described hereunder, which shall be deemed to be accepted by
2787 + * any user of the software and applicable on any use of the software:
2788 + *
2789 + * 1. K.U.Leuven Department of Electrical Engineering-ESAT/COSIC shall for
2790 + * all purposes be considered the owner of the RIPEMD-160 software and of
2791 + * all copyright, trade secret, patent or other intellectual property
2792 + * rights therein.
2793 + * 2. The RIPEMD-160 software is provided on an "as is" basis without
2794 + * warranty of any sort, express or implied. K.U.Leuven makes no
2795 + * representation that the use of the software will not infringe any
2796 + * patent or proprietary right of third parties. User will indemnify
2797 + * K.U.Leuven and hold K.U.Leuven harmless from any claims or liabilities
2798 + * which may arise as a result of its use of the software. In no
2799 + * circumstances K.U.Leuven R&D will be held liable for any deficiency,
2800 + * fault or other mishappening with regard to the use or performance of
2801 + * the software.
2802 + * 3. User agrees to give due credit to K.U.Leuven in scientific publications
2803 + * or communications in relation with the use of the RIPEMD-160 software
2804 + * as follows: RIPEMD-160 software written by Antoon Bosselaers,
2805 + * available at http://www.esat.kuleuven.be/~cosicart/ps/AB-9601/.
2806 + *
2807 +\********************************************************************/
2808 +
2809 +/* header files */
2810 +#include <common.h>
2811 +#include "rmd160.h"
2812 +
2813 +/********************************************************************/
2814 +
2815 +void MDinit(dword *MDbuf)
2816 +{
2817 + MDbuf[0] = 0x67452301UL;
2818 + MDbuf[1] = 0xefcdab89UL;
2819 + MDbuf[2] = 0x98badcfeUL;
2820 + MDbuf[3] = 0x10325476UL;
2821 + MDbuf[4] = 0xc3d2e1f0UL;
2822 +
2823 + return;
2824 +}
2825 +
2826 +/********************************************************************/
2827 +
2828 +void compress(dword *MDbuf, dword *X)
2829 +{
2830 + dword aa = MDbuf[0], bb = MDbuf[1], cc = MDbuf[2],
2831 + dd = MDbuf[3], ee = MDbuf[4];
2832 + dword aaa = MDbuf[0], bbb = MDbuf[1], ccc = MDbuf[2],
2833 + ddd = MDbuf[3], eee = MDbuf[4];
2834 +
2835 + /* round 1 */
2836 + FF(aa, bb, cc, dd, ee, X[ 0], 11);
2837 + FF(ee, aa, bb, cc, dd, X[ 1], 14);
2838 + FF(dd, ee, aa, bb, cc, X[ 2], 15);
2839 + FF(cc, dd, ee, aa, bb, X[ 3], 12);
2840 + FF(bb, cc, dd, ee, aa, X[ 4], 5);
2841 + FF(aa, bb, cc, dd, ee, X[ 5], 8);
2842 + FF(ee, aa, bb, cc, dd, X[ 6], 7);
2843 + FF(dd, ee, aa, bb, cc, X[ 7], 9);
2844 + FF(cc, dd, ee, aa, bb, X[ 8], 11);
2845 + FF(bb, cc, dd, ee, aa, X[ 9], 13);
2846 + FF(aa, bb, cc, dd, ee, X[10], 14);
2847 + FF(ee, aa, bb, cc, dd, X[11], 15);
2848 + FF(dd, ee, aa, bb, cc, X[12], 6);
2849 + FF(cc, dd, ee, aa, bb, X[13], 7);
2850 + FF(bb, cc, dd, ee, aa, X[14], 9);
2851 + FF(aa, bb, cc, dd, ee, X[15], 8);
2852 +
2853 + /* round 2 */
2854 + GG(ee, aa, bb, cc, dd, X[ 7], 7);
2855 + GG(dd, ee, aa, bb, cc, X[ 4], 6);
2856 + GG(cc, dd, ee, aa, bb, X[13], 8);
2857 + GG(bb, cc, dd, ee, aa, X[ 1], 13);
2858 + GG(aa, bb, cc, dd, ee, X[10], 11);
2859 + GG(ee, aa, bb, cc, dd, X[ 6], 9);
2860 + GG(dd, ee, aa, bb, cc, X[15], 7);
2861 + GG(cc, dd, ee, aa, bb, X[ 3], 15);
2862 + GG(bb, cc, dd, ee, aa, X[12], 7);
2863 + GG(aa, bb, cc, dd, ee, X[ 0], 12);
2864 + GG(ee, aa, bb, cc, dd, X[ 9], 15);
2865 + GG(dd, ee, aa, bb, cc, X[ 5], 9);
2866 + GG(cc, dd, ee, aa, bb, X[ 2], 11);
2867 + GG(bb, cc, dd, ee, aa, X[14], 7);
2868 + GG(aa, bb, cc, dd, ee, X[11], 13);
2869 + GG(ee, aa, bb, cc, dd, X[ 8], 12);
2870 +
2871 + /* round 3 */
2872 + HH(dd, ee, aa, bb, cc, X[ 3], 11);
2873 + HH(cc, dd, ee, aa, bb, X[10], 13);
2874 + HH(bb, cc, dd, ee, aa, X[14], 6);
2875 + HH(aa, bb, cc, dd, ee, X[ 4], 7);
2876 + HH(ee, aa, bb, cc, dd, X[ 9], 14);
2877 + HH(dd, ee, aa, bb, cc, X[15], 9);
2878 + HH(cc, dd, ee, aa, bb, X[ 8], 13);
2879 + HH(bb, cc, dd, ee, aa, X[ 1], 15);
2880 + HH(aa, bb, cc, dd, ee, X[ 2], 14);
2881 + HH(ee, aa, bb, cc, dd, X[ 7], 8);
2882 + HH(dd, ee, aa, bb, cc, X[ 0], 13);
2883 + HH(cc, dd, ee, aa, bb, X[ 6], 6);
2884 + HH(bb, cc, dd, ee, aa, X[13], 5);
2885 + HH(aa, bb, cc, dd, ee, X[11], 12);
2886 + HH(ee, aa, bb, cc, dd, X[ 5], 7);
2887 + HH(dd, ee, aa, bb, cc, X[12], 5);
2888 +
2889 + /* round 4 */
2890 + II(cc, dd, ee, aa, bb, X[ 1], 11);
2891 + II(bb, cc, dd, ee, aa, X[ 9], 12);
2892 + II(aa, bb, cc, dd, ee, X[11], 14);
2893 + II(ee, aa, bb, cc, dd, X[10], 15);
2894 + II(dd, ee, aa, bb, cc, X[ 0], 14);
2895 + II(cc, dd, ee, aa, bb, X[ 8], 15);
2896 + II(bb, cc, dd, ee, aa, X[12], 9);
2897 + II(aa, bb, cc, dd, ee, X[ 4], 8);
2898 + II(ee, aa, bb, cc, dd, X[13], 9);
2899 + II(dd, ee, aa, bb, cc, X[ 3], 14);
2900 + II(cc, dd, ee, aa, bb, X[ 7], 5);
2901 + II(bb, cc, dd, ee, aa, X[15], 6);
2902 + II(aa, bb, cc, dd, ee, X[14], 8);
2903 + II(ee, aa, bb, cc, dd, X[ 5], 6);
2904 + II(dd, ee, aa, bb, cc, X[ 6], 5);
2905 + II(cc, dd, ee, aa, bb, X[ 2], 12);
2906 +
2907 + /* round 5 */
2908 + JJ(bb, cc, dd, ee, aa, X[ 4], 9);
2909 + JJ(aa, bb, cc, dd, ee, X[ 0], 15);
2910 + JJ(ee, aa, bb, cc, dd, X[ 5], 5);
2911 + JJ(dd, ee, aa, bb, cc, X[ 9], 11);
2912 + JJ(cc, dd, ee, aa, bb, X[ 7], 6);
2913 + JJ(bb, cc, dd, ee, aa, X[12], 8);
2914 + JJ(aa, bb, cc, dd, ee, X[ 2], 13);
2915 + JJ(ee, aa, bb, cc, dd, X[10], 12);
2916 + JJ(dd, ee, aa, bb, cc, X[14], 5);
2917 + JJ(cc, dd, ee, aa, bb, X[ 1], 12);
2918 + JJ(bb, cc, dd, ee, aa, X[ 3], 13);
2919 + JJ(aa, bb, cc, dd, ee, X[ 8], 14);
2920 + JJ(ee, aa, bb, cc, dd, X[11], 11);
2921 + JJ(dd, ee, aa, bb, cc, X[ 6], 8);
2922 + JJ(cc, dd, ee, aa, bb, X[15], 5);
2923 + JJ(bb, cc, dd, ee, aa, X[13], 6);
2924 +
2925 + /* parallel round 1 */
2926 + JJJ(aaa, bbb, ccc, ddd, eee, X[ 5], 8);
2927 + JJJ(eee, aaa, bbb, ccc, ddd, X[14], 9);
2928 + JJJ(ddd, eee, aaa, bbb, ccc, X[ 7], 9);
2929 + JJJ(ccc, ddd, eee, aaa, bbb, X[ 0], 11);
2930 + JJJ(bbb, ccc, ddd, eee, aaa, X[ 9], 13);
2931 + JJJ(aaa, bbb, ccc, ddd, eee, X[ 2], 15);
2932 + JJJ(eee, aaa, bbb, ccc, ddd, X[11], 15);
2933 + JJJ(ddd, eee, aaa, bbb, ccc, X[ 4], 5);
2934 + JJJ(ccc, ddd, eee, aaa, bbb, X[13], 7);
2935 + JJJ(bbb, ccc, ddd, eee, aaa, X[ 6], 7);
2936 + JJJ(aaa, bbb, ccc, ddd, eee, X[15], 8);
2937 + JJJ(eee, aaa, bbb, ccc, ddd, X[ 8], 11);
2938 + JJJ(ddd, eee, aaa, bbb, ccc, X[ 1], 14);
2939 + JJJ(ccc, ddd, eee, aaa, bbb, X[10], 14);
2940 + JJJ(bbb, ccc, ddd, eee, aaa, X[ 3], 12);
2941 + JJJ(aaa, bbb, ccc, ddd, eee, X[12], 6);
2942 +
2943 + /* parallel round 2 */
2944 + III(eee, aaa, bbb, ccc, ddd, X[ 6], 9);
2945 + III(ddd, eee, aaa, bbb, ccc, X[11], 13);
2946 + III(ccc, ddd, eee, aaa, bbb, X[ 3], 15);
2947 + III(bbb, ccc, ddd, eee, aaa, X[ 7], 7);
2948 + III(aaa, bbb, ccc, ddd, eee, X[ 0], 12);
2949 + III(eee, aaa, bbb, ccc, ddd, X[13], 8);
2950 + III(ddd, eee, aaa, bbb, ccc, X[ 5], 9);
2951 + III(ccc, ddd, eee, aaa, bbb, X[10], 11);
2952 + III(bbb, ccc, ddd, eee, aaa, X[14], 7);
2953 + III(aaa, bbb, ccc, ddd, eee, X[15], 7);
2954 + III(eee, aaa, bbb, ccc, ddd, X[ 8], 12);
2955 + III(ddd, eee, aaa, bbb, ccc, X[12], 7);
2956 + III(ccc, ddd, eee, aaa, bbb, X[ 4], 6);
2957 + III(bbb, ccc, ddd, eee, aaa, X[ 9], 15);
2958 + III(aaa, bbb, ccc, ddd, eee, X[ 1], 13);
2959 + III(eee, aaa, bbb, ccc, ddd, X[ 2], 11);
2960 +
2961 + /* parallel round 3 */
2962 + HHH(ddd, eee, aaa, bbb, ccc, X[15], 9);
2963 + HHH(ccc, ddd, eee, aaa, bbb, X[ 5], 7);
2964 + HHH(bbb, ccc, ddd, eee, aaa, X[ 1], 15);
2965 + HHH(aaa, bbb, ccc, ddd, eee, X[ 3], 11);
2966 + HHH(eee, aaa, bbb, ccc, ddd, X[ 7], 8);
2967 + HHH(ddd, eee, aaa, bbb, ccc, X[14], 6);
2968 + HHH(ccc, ddd, eee, aaa, bbb, X[ 6], 6);
2969 + HHH(bbb, ccc, ddd, eee, aaa, X[ 9], 14);
2970 + HHH(aaa, bbb, ccc, ddd, eee, X[11], 12);
2971 + HHH(eee, aaa, bbb, ccc, ddd, X[ 8], 13);
2972 + HHH(ddd, eee, aaa, bbb, ccc, X[12], 5);
2973 + HHH(ccc, ddd, eee, aaa, bbb, X[ 2], 14);
2974 + HHH(bbb, ccc, ddd, eee, aaa, X[10], 13);
2975 + HHH(aaa, bbb, ccc, ddd, eee, X[ 0], 13);
2976 + HHH(eee, aaa, bbb, ccc, ddd, X[ 4], 7);
2977 + HHH(ddd, eee, aaa, bbb, ccc, X[13], 5);
2978 +
2979 + /* parallel round 4 */
2980 + GGG(ccc, ddd, eee, aaa, bbb, X[ 8], 15);
2981 + GGG(bbb, ccc, ddd, eee, aaa, X[ 6], 5);
2982 + GGG(aaa, bbb, ccc, ddd, eee, X[ 4], 8);
2983 + GGG(eee, aaa, bbb, ccc, ddd, X[ 1], 11);
2984 + GGG(ddd, eee, aaa, bbb, ccc, X[ 3], 14);
2985 + GGG(ccc, ddd, eee, aaa, bbb, X[11], 14);
2986 + GGG(bbb, ccc, ddd, eee, aaa, X[15], 6);
2987 + GGG(aaa, bbb, ccc, ddd, eee, X[ 0], 14);
2988 + GGG(eee, aaa, bbb, ccc, ddd, X[ 5], 6);
2989 + GGG(ddd, eee, aaa, bbb, ccc, X[12], 9);
2990 + GGG(ccc, ddd, eee, aaa, bbb, X[ 2], 12);
2991 + GGG(bbb, ccc, ddd, eee, aaa, X[13], 9);
2992 + GGG(aaa, bbb, ccc, ddd, eee, X[ 9], 12);
2993 + GGG(eee, aaa, bbb, ccc, ddd, X[ 7], 5);
2994 + GGG(ddd, eee, aaa, bbb, ccc, X[10], 15);
2995 + GGG(ccc, ddd, eee, aaa, bbb, X[14], 8);
2996 +
2997 + /* parallel round 5 */
2998 + FFF(bbb, ccc, ddd, eee, aaa, X[12] , 8);
2999 + FFF(aaa, bbb, ccc, ddd, eee, X[15] , 5);
3000 + FFF(eee, aaa, bbb, ccc, ddd, X[10] , 12);
3001 + FFF(ddd, eee, aaa, bbb, ccc, X[ 4] , 9);
3002 + FFF(ccc, ddd, eee, aaa, bbb, X[ 1] , 12);
3003 + FFF(bbb, ccc, ddd, eee, aaa, X[ 5] , 5);
3004 + FFF(aaa, bbb, ccc, ddd, eee, X[ 8] , 14);
3005 + FFF(eee, aaa, bbb, ccc, ddd, X[ 7] , 6);
3006 + FFF(ddd, eee, aaa, bbb, ccc, X[ 6] , 8);
3007 + FFF(ccc, ddd, eee, aaa, bbb, X[ 2] , 13);
3008 + FFF(bbb, ccc, ddd, eee, aaa, X[13] , 6);
3009 + FFF(aaa, bbb, ccc, ddd, eee, X[14] , 5);
3010 + FFF(eee, aaa, bbb, ccc, ddd, X[ 0] , 15);
3011 + FFF(ddd, eee, aaa, bbb, ccc, X[ 3] , 13);
3012 + FFF(ccc, ddd, eee, aaa, bbb, X[ 9] , 11);
3013 + FFF(bbb, ccc, ddd, eee, aaa, X[11] , 11);
3014 +
3015 + /* combine results */
3016 + ddd += cc + MDbuf[1]; /* final result for MDbuf[0] */
3017 + MDbuf[1] = MDbuf[2] + dd + eee;
3018 + MDbuf[2] = MDbuf[3] + ee + aaa;
3019 + MDbuf[3] = MDbuf[4] + aa + bbb;
3020 + MDbuf[4] = MDbuf[0] + bb + ccc;
3021 + MDbuf[0] = ddd;
3022 +
3023 + return;
3024 +}
3025 +
3026 +/********************************************************************/
3027 +
3028 +void MDfinish(dword *MDbuf, byte *strptr, dword lswlen, dword mswlen)
3029 +{
3030 + unsigned int i; /* counter */
3031 + dword X[16]; /* message words */
3032 +
3033 + memset(X, 0, 16*sizeof(dword));
3034 +
3035 + /* put bytes from strptr into X */
3036 + for (i=0; i<(lswlen&63); i++) {
3037 + /* byte i goes into word X[i div 4] at pos. 8*(i mod 4) */
3038 + X[i>>2] ^= (dword) *strptr++ << (8 * (i&3));
3039 + }
3040 +
3041 + /* append the bit m_n == 1 */
3042 + X[(lswlen>>2)&15] ^= (dword)1 << (8*(lswlen&3) + 7);
3043 +
3044 + if ((lswlen & 63) > 55) {
3045 + /* length goes to next block */
3046 + compress(MDbuf, X);
3047 + memset(X, 0, 16*sizeof(dword));
3048 + }
3049 +
3050 + /* append length in bits*/
3051 + X[14] = lswlen << 3;
3052 + X[15] = (lswlen >> 29) | (mswlen << 3);
3053 + compress(MDbuf, X);
3054 +
3055 + return;
3056 +}
3057 +
3058 +/************************ end of file rmd160.c **********************/
3059 +
3060 --- /dev/null
3061 +++ b/net/rsa/rmd160.h
3062 @@ -0,0 +1,154 @@
3063 +/********************************************************************\
3064 + *
3065 + * FILE: rmd160.h
3066 + *
3067 + * CONTENTS: Header file for a sample C-implementation of the
3068 + * RIPEMD-160 hash-function.
3069 + * TARGET: any computer with an ANSI C compiler
3070 + *
3071 + * AUTHOR: Antoon Bosselaers, ESAT-COSIC
3072 + * DATE: 1 March 1996
3073 + * VERSION: 1.0
3074 + *
3075 + * Copyright (c) Katholieke Universiteit Leuven
3076 + * 1996, All Rights Reserved
3077 + *
3078 + * Conditions for use of the RIPEMD-160 Software
3079 + *
3080 + * The RIPEMD-160 software is freely available for use under the terms and
3081 + * conditions described hereunder, which shall be deemed to be accepted by
3082 + * any user of the software and applicable on any use of the software:
3083 + *
3084 + * 1. K.U.Leuven Department of Electrical Engineering-ESAT/COSIC shall for
3085 + * all purposes be considered the owner of the RIPEMD-160 software and of
3086 + * all copyright, trade secret, patent or other intellectual property
3087 + * rights therein.
3088 + * 2. The RIPEMD-160 software is provided on an "as is" basis without
3089 + * warranty of any sort, express or implied. K.U.Leuven makes no
3090 + * representation that the use of the software will not infringe any
3091 + * patent or proprietary right of third parties. User will indemnify
3092 + * K.U.Leuven and hold K.U.Leuven harmless from any claims or liabilities
3093 + * which may arise as a result of its use of the software. In no
3094 + * circumstances K.U.Leuven R&D will be held liable for any deficiency,
3095 + * fault or other mishappening with regard to the use or performance of
3096 + * the software.
3097 + * 3. User agrees to give due credit to K.U.Leuven in scientific publications
3098 + * or communications in relation with the use of the RIPEMD-160 software
3099 + * as follows: RIPEMD-160 software written by Antoon Bosselaers,
3100 + * available at http://www.esat.kuleuven.be/~cosicart/ps/AB-9601/.
3101 + *
3102 +\********************************************************************/
3103 +
3104 +#ifndef RMD160H /* make sure this file is read only once */
3105 +#define RMD160H
3106 +
3107 +/********************************************************************/
3108 +
3109 +/* typedef 8 and 32 bit types, resp. */
3110 +/* adapt these, if necessary,
3111 + for your operating system and compiler */
3112 +typedef unsigned char byte;
3113 +typedef unsigned long dword;
3114 +
3115 +
3116 +/********************************************************************/
3117 +
3118 +/* macro definitions */
3119 +
3120 +/* collect four bytes into one word: */
3121 +#define BYTES_TO_DWORD(strptr) \
3122 + (((dword) *((strptr)+3) << 24) | \
3123 + ((dword) *((strptr)+2) << 16) | \
3124 + ((dword) *((strptr)+1) << 8) | \
3125 + ((dword) *(strptr)))
3126 +
3127 +/* ROL(x, n) cyclically rotates x over n bits to the left */
3128 +/* x must be of an unsigned 32 bits type and 0 <= n < 32. */
3129 +#define ROL(x, n) (((x) << (n)) | ((x) >> (32-(n))))
3130 +
3131 +/* the five basic functions F(), G() and H() */
3132 +#define F(x, y, z) ((x) ^ (y) ^ (z))
3133 +#define G(x, y, z) (((x) & (y)) | (~(x) & (z)))
3134 +#define H(x, y, z) (((x) | ~(y)) ^ (z))
3135 +#define I(x, y, z) (((x) & (z)) | ((y) & ~(z)))
3136 +#define J(x, y, z) ((x) ^ ((y) | ~(z)))
3137 +
3138 +/* the ten basic operations FF() through III() */
3139 +#define FF(a, b, c, d, e, x, s) {\
3140 + (a) += F((b), (c), (d)) + (x);\
3141 + (a) = ROL((a), (s)) + (e);\
3142 + (c) = ROL((c), 10);\
3143 + }
3144 +#define GG(a, b, c, d, e, x, s) {\
3145 + (a) += G((b), (c), (d)) + (x) + 0x5a827999UL;\
3146 + (a) = ROL((a), (s)) + (e);\
3147 + (c) = ROL((c), 10);\
3148 + }
3149 +#define HH(a, b, c, d, e, x, s) {\
3150 + (a) += H((b), (c), (d)) + (x) + 0x6ed9eba1UL;\
3151 + (a) = ROL((a), (s)) + (e);\
3152 + (c) = ROL((c), 10);\
3153 + }
3154 +#define II(a, b, c, d, e, x, s) {\
3155 + (a) += I((b), (c), (d)) + (x) + 0x8f1bbcdcUL;\
3156 + (a) = ROL((a), (s)) + (e);\
3157 + (c) = ROL((c), 10);\
3158 + }
3159 +#define JJ(a, b, c, d, e, x, s) {\
3160 + (a) += J((b), (c), (d)) + (x) + 0xa953fd4eUL;\
3161 + (a) = ROL((a), (s)) + (e);\
3162 + (c) = ROL((c), 10);\
3163 + }
3164 +#define FFF(a, b, c, d, e, x, s) {\
3165 + (a) += F((b), (c), (d)) + (x);\
3166 + (a) = ROL((a), (s)) + (e);\
3167 + (c) = ROL((c), 10);\
3168 + }
3169 +#define GGG(a, b, c, d, e, x, s) {\
3170 + (a) += G((b), (c), (d)) + (x) + 0x7a6d76e9UL;\
3171 + (a) = ROL((a), (s)) + (e);\
3172 + (c) = ROL((c), 10);\
3173 + }
3174 +#define HHH(a, b, c, d, e, x, s) {\
3175 + (a) += H((b), (c), (d)) + (x) + 0x6d703ef3UL;\
3176 + (a) = ROL((a), (s)) + (e);\
3177 + (c) = ROL((c), 10);\
3178 + }
3179 +#define III(a, b, c, d, e, x, s) {\
3180 + (a) += I((b), (c), (d)) + (x) + 0x5c4dd124UL;\
3181 + (a) = ROL((a), (s)) + (e);\
3182 + (c) = ROL((c), 10);\
3183 + }
3184 +#define JJJ(a, b, c, d, e, x, s) {\
3185 + (a) += J((b), (c), (d)) + (x) + 0x50a28be6UL;\
3186 + (a) = ROL((a), (s)) + (e);\
3187 + (c) = ROL((c), 10);\
3188 + }
3189 +
3190 +/********************************************************************/
3191 +
3192 +/* function prototypes */
3193 +
3194 +void MDinit(dword *MDbuf);
3195 +/*
3196 + * initializes MDbuffer to "magic constants"
3197 + */
3198 +
3199 +void compress(dword *MDbuf, dword *X);
3200 +/*
3201 + * the compression function.
3202 + * transforms MDbuf using message bytes X[0] through X[15]
3203 + */
3204 +
3205 +void MDfinish(dword *MDbuf, byte *strptr, dword lswlen, dword mswlen);
3206 +/*
3207 + * puts bytes from strptr into X and pad out; appends length
3208 + * and finally, compresses the last block(s)
3209 + * note: length in bits == 8 * (lswlen + 2^32 mswlen).
3210 + * note: there are (lswlen mod 64) bytes left in strptr.
3211 + */
3212 +
3213 +#endif /* RMD160H */
3214 +
3215 +/*********************** end of file rmd160.h ***********************/
3216 +
3217 --- /dev/null
3218 +++ b/net/rsa/rsa.c
3219 @@ -0,0 +1,303 @@
3220 +/*
3221 + * FONSM RSA handling library
3222 + *
3223 + * This file is part of FONUCS. Copyright (C) 2007 FON Wireless Ltd.
3224 + *
3225 + * This library is free software; you can redistribute it and/or modify
3226 + * it under the terms of the GNU Lesser General Public License as published by
3227 + * the Free Software Foundation; either version 2 of the License, or
3228 + * (at your option) any later version.
3229 + *
3230 + * This library is distributed in the hope that it will be useful,
3231 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
3232 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
3233 + * GNU Lesser General Public License for more details.
3234 + *
3235 + * You should have received a copy of the GNU Lesser General Public License
3236 + * along with this library; if not, write to the Free Software
3237 + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
3238 + *
3239 + * Created: 20070306 Pablo Martin Medrano <pablo@fon.com>
3240 + *
3241 + * Based on axTLS
3242 + *
3243 + * $Id: fonrsa.c 405 2007-09-19 15:26:17Z jesus.pico $
3244 + */
3245 +#include <malloc.h>
3246 +#include <common.h>
3247 +#include "rsa.h"
3248 +#include "rmd160.h"
3249 +#include "bigint.h"
3250 +#include "base64.h"
3251 +
3252 +#include "public_key.h"
3253 +
3254 +#define RMDsize 160 /* A RIPEMD-160 hash has 160 bits */
3255 +
3256 +typedef struct {
3257 + uint8_t *buffer;
3258 + size_t size;
3259 +} DER_key;
3260 +
3261 +typedef struct {
3262 + bigint *m; /* modulus */
3263 + bigint *e; /* public exponent */
3264 + int num_octets;
3265 + BI_CTX *bi_ctx; /* big integer handle */
3266 +} RSA_parameters;
3267 +
3268 +typedef struct {
3269 + DER_key *derkey;
3270 + RSA_parameters *rsaparms;
3271 +} RSA;
3272 +
3273 +static void CH_free_der_key(DER_key *key)
3274 +{
3275 + free(key->buffer);
3276 + free(key);
3277 +}
3278 +
3279 +int CH_decrypt(RSA_parameters *rsa, uint8_t *buffer_in, uint8_t *buffer_out)
3280 +{
3281 + bigint *dat_bi;
3282 + bigint *decrypted_bi;
3283 + int byte_size;
3284 +
3285 + byte_size = rsa->num_octets;
3286 + dat_bi = bi_import(rsa->bi_ctx, buffer_in, byte_size);
3287 + rsa->bi_ctx->mod_offset = BIGINT_M_OFFSET;
3288 + bi_copy(rsa->m);
3289 + decrypted_bi = bi_mod_power(rsa->bi_ctx, dat_bi, rsa->e);
3290 + bi_export(rsa->bi_ctx, decrypted_bi, buffer_out, byte_size);
3291 + return 0;
3292 +}
3293 +
3294 +byte *RMDbinary(char *buffer, int len)
3295 +{
3296 + byte data[1024]; /* contains current mess. block */
3297 + dword nbytes; /* length of this block */
3298 + dword MDbuf[RMDsize / 32]; /* contains (A, B, C, D(, E)) */
3299 + static byte hashcode[RMDsize / 8]; /* for final hash-value */
3300 + dword X[16]; /* current 16-word chunk */
3301 + unsigned int i, j; /* counters */
3302 + dword length[2]; /* length in bytes of message */
3303 + dword offset; /* # of unprocessed bytes at */
3304 + /* call of MDfinish */
3305 + int total = len;
3306 + char *tmp = buffer;
3307 + MDinit(MDbuf);
3308 + length[0] = 0;
3309 + length[1] = 0;
3310 + while ( len) {
3311 + memcpy(data, tmp, 1024);
3312 + if(len > 1024)
3313 + {
3314 + nbytes = 1024;
3315 + len -= 1024;
3316 + tmp += 1024;
3317 + } else {
3318 + nbytes = len;
3319 + len = 0;
3320 + }
3321 + /* process all complete blocks */
3322 + for (i = 0; i < (nbytes >> 6); i++) {
3323 + for (j = 0; j < 16; j++)
3324 + X[j] = BYTES_TO_DWORD(data + 64 * i + 4 * j);
3325 + compress(MDbuf, X);
3326 + }
3327 + /* update length[] */
3328 + if (length[0] + nbytes < length[0])
3329 + length[1]++; /* overflow to msb of length */
3330 + length[0] += nbytes;
3331 + }
3332 + /* finish: */
3333 + offset = length[0] & 0x3C0; /* extract bytes 6 to 10 inclusive */
3334 + MDfinish(MDbuf, data + offset, length[0], length[1]);
3335 +
3336 + for (i = 0; i < RMDsize / 8; i += 4) {
3337 + hashcode[i] = MDbuf[i >> 2];
3338 + hashcode[i + 1] = (MDbuf[i >> 2] >> 8);
3339 + hashcode[i + 2] = (MDbuf[i >> 2] >> 16);
3340 + hashcode[i + 3] = (MDbuf[i >> 2] >> 24);
3341 + }
3342 +
3343 + return (byte *) hashcode;
3344 +}
3345 +
3346 +static DER_key *CH_load_pem_key(void)
3347 +{
3348 + DER_key *ret;
3349 + uint8_t *buffer;
3350 + char *b64,*p,*t;
3351 + char key[1024];
3352 + size_t filesize;
3353 + int size;
3354 +
3355 + if ((ret = (DER_key *)malloc(sizeof(DER_key))) == NULL)
3356 + return NULL;
3357 + buffer = public_key;
3358 + p = (char *)buffer;
3359 + while ((*p != '\n') && (*p != '\0'))
3360 + p++;
3361 + if (*p == '\0') {
3362 + free(ret);
3363 + return NULL;
3364 + }
3365 + p++;
3366 + b64 = t = p;
3367 + while((p - b64) <= filesize) {
3368 + if ((*p == '-')) {
3369 + break;
3370 + } else if ((*p != '\n') && (*p != ' ') && (*p != '\t')) {
3371 + *t = *p;
3372 + t++;
3373 + }
3374 + p++;
3375 + }
3376 + *t = '\0';
3377 + size = B64_decode(b64, key, strlen(b64), 1024);
3378 + if (size < 0) {
3379 + free(buffer);
3380 + free(ret);
3381 + return NULL;
3382 + }
3383 + //free(buffer);
3384 + ret->buffer = (char *)malloc(size);
3385 + ret->size = size;
3386 + memcpy((void *)ret->buffer, (void *)key, size);
3387 + return ret;
3388 +}
3389 +
3390 +/*
3391 + * Similar to RSA_pub_key_new, rewritten to make this program depend only on bi module
3392 + */
3393 +void CH_pub_key_new(RSA_parameters **rsa, const uint8_t *modulus, int mod_len, const uint8_t *pub_exp, int pub_len)
3394 +{
3395 + RSA_parameters *rsa_parameters;
3396 +
3397 + BI_CTX *bi_ctx = bi_initialize();
3398 + *rsa = (RSA_parameters *)calloc(1, sizeof(RSA_parameters));
3399 + rsa_parameters = *rsa;
3400 + rsa_parameters->bi_ctx = bi_ctx;
3401 + rsa_parameters->num_octets = (mod_len & 0xFFF0);
3402 + rsa_parameters->m = bi_import(bi_ctx, modulus, mod_len);
3403 + bi_set_mod(bi_ctx, rsa_parameters->m, BIGINT_M_OFFSET);
3404 + rsa_parameters->e = bi_import(bi_ctx, pub_exp, pub_len);
3405 + bi_permanent(rsa_parameters->e);
3406 +}
3407 +
3408 +/*
3409 + * Get the public key specifics from an ASN.1 encoded file
3410 + * A function lacking in the exported axTLS API
3411 + *
3412 + * This is a really weird hack that only works with RSA public key
3413 + * files
3414 + */
3415 +static int asn1_get_public_key(const uint8_t *buf, int len, RSA_parameters **rsa_parameters)
3416 +{
3417 + uint8_t *modulus, *pub_exp;
3418 + int mod_len, pub_len;
3419 +
3420 + pub_len = 3;
3421 + mod_len = len - 37;
3422 + if (buf[0] != 0x30) {
3423 + return -1;
3424 + }
3425 +
3426 + pub_exp = (uint8_t *)malloc(3);
3427 + modulus = (uint8_t *)malloc(mod_len);
3428 + memcpy(modulus, buf + 32 , mod_len);
3429 + memcpy(pub_exp, buf + 34 + mod_len, 3);
3430 + if (mod_len <= 0 || pub_len <= 0 )
3431 + return -1;
3432 + CH_pub_key_new(rsa_parameters, modulus, mod_len, pub_exp, pub_len);
3433 +
3434 + free(modulus);
3435 + free(pub_exp);
3436 + return 0;
3437 +}
3438 +
3439 +
3440 +/* FR_init */
3441 +void *FR_init(void)
3442 +{
3443 + DER_key *derkey;
3444 + RSA_parameters *rsa_parameters;
3445 +
3446 + derkey = CH_load_pem_key();
3447 + if ((asn1_get_public_key(derkey->buffer, derkey->size, &rsa_parameters)) != 0) {
3448 + fprintf(stderr, "Error: Extracting public key from file\n");
3449 + return 0;
3450 + }
3451 + CH_free_der_key(derkey);
3452 + return (void *)rsa_parameters;
3453 +}
3454 +
3455 +FONRSA_ERROR FR_end(void *handle)
3456 +{
3457 + RSA_parameters *rsa_parameters = (RSA_parameters *)handle;
3458 +
3459 + free(rsa_parameters);
3460 + return FONRSA_OK;
3461 +}
3462 +
3463 +/*
3464 + *
3465 + * Implementation of PKCS 1.5 padding, borrowed from
3466 + * Tom's code (public domain)
3467 + */
3468 +
3469 +/* Standalone FR_verify_file */
3470 +FONRSA_ERROR FR_verify_file(void *handler, char *file_data, int file_len,
3471 + char *signature_buffer, int signature_size)
3472 +{
3473 + int j;
3474 + byte *hashcode;
3475 + byte hash[20];
3476 + uint8_t *decrypted;
3477 + RSA_parameters *rsa_parameters = (RSA_parameters *)handler;
3478 +
3479 + /* Calculates the RIPEMD-160 hash of the file */
3480 + hashcode = RMDbinary (file_data, file_len);
3481 +
3482 + if (rsa_parameters->num_octets != signature_size)
3483 + return FONRSA_SIZE;
3484 + decrypted = (uint8_t *)malloc(rsa_parameters->num_octets);
3485 + if (CH_decrypt(rsa_parameters, signature_buffer, decrypted)) {
3486 + printf("Error: Decrypting signature\n");
3487 + return FONRSA_VERIFICATION_FAILURE;
3488 + }
3489 + memcpy(hash, decrypted + 492, 20);
3490 + //free(decrypted);
3491 + //free(signature_buffer);
3492 + for (j = 0; j < RMDsize/8; j++) {
3493 + if (hash[j] != hashcode[j])
3494 + return FONRSA_VERIFICATION_FAILURE;
3495 + }
3496 + return FONRSA_OK;
3497 +}
3498 +
3499 +int rsa_check_signature(char *signature, int signature_len, char *buffer, int buffer_len)
3500 +{
3501 + FONRSA_ERROR fonrsa_error;
3502 + void *handle;
3503 + handle = FR_init();
3504 + if (handle == NULL) {
3505 + printf("Error loading keys\n");
3506 + return 1;
3507 + }
3508 + fonrsa_error = FR_verify_file(handle, buffer, buffer_len, signature, signature_len);
3509 + FR_end(handle);
3510 + switch (fonrsa_error) {
3511 + case FONRSA_OK:
3512 + printf("Verified OK\n");
3513 + return 0;
3514 + case FONRSA_VERIFICATION_FAILURE:
3515 + printf("Verification failure\n");
3516 + return 1;
3517 + default:
3518 + printf("Verification error\n");
3519 + return -1;
3520 + }
3521 +
3522 +}
3523 --- /dev/null
3524 +++ b/net/rsa/rsa.h
3525 @@ -0,0 +1,46 @@
3526 +/*
3527 + * FONSM RSA handling library, used by fonsmcd and foncheckrsa
3528 + *
3529 + * This file is part of FONUCS. Copyright (C) 2007 FON Wireless Ltd.
3530 + *
3531 + * This library is free software; you can redistribute it and/or modify
3532 + * it under the terms of the GNU Lesser General Public License as published by
3533 + * the Free Software Foundation; either version 2 of the License, or
3534 + * (at your option) any later version.
3535 + *
3536 + * This library is distributed in the hope that it will be useful,
3537 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
3538 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
3539 + * GNU Lesser General Public License for more details.
3540 + *
3541 + * You should have received a copy of the GNU Lesser General Public License
3542 + * along with this library; if not, write to the Free Software
3543 + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
3544 + *
3545 + * Created: 20070306 Pablo Martin Medrano <pablo@fon.com>
3546 + *
3547 + * $Id: fonrsa.h 404 2007-09-17 10:41:31Z jesus.pico $
3548 + */
3549 +#ifndef _FONRSA_H
3550 +#define _FONRSA_H
3551 +
3552 +#define MINIMUM_PADING_BYTES_PKCS_1_5 3
3553 +
3554 +typedef enum {
3555 + FONRSA_OK = 0,
3556 + FONRSA_VERIFICATION_FAILURE = 1,
3557 + FONRSA_OPENKEY = 2,
3558 + FONRSA_SIZE = 3,
3559 + FONRSA_LOADFILE = 4,
3560 + FONRSA_CRYPT = 5,
3561 + FONRSA_DECRYPT = 6,
3562 + FONRSA_SAVEFILE = 7,
3563 + FONRSA_NOSYS = 8,
3564 + FONRSA_VERIFY = 9
3565 +} FONRSA_ERROR;
3566 +
3567 +int rsa_check_signature(char *signature, int signature_len, char *buffer, int buffer_len);
3568 +
3569 +#endif
3570 +
3571 +
3572 --- /dev/null
3573 +++ b/net/rsa/sign.h
3574 @@ -0,0 +1,27 @@
3575 +/*
3576 + * Signature interface
3577 + *
3578 + * This file is part of FONUCS. Copyright (C) 2007 FON Wireless Ltd.
3579 + *
3580 + * Created: 20070417 Pablo Martín Medrano <pablo@fon.com>
3581 + *
3582 + * $Id: sign.h 389 2007-06-11 08:29:56Z pablo.martin $
3583 + */
3584 +#ifndef __SIGN_H__
3585 +#define __SIGN_H__
3586 +#ifdef __cplusplus
3587 + extern "C" {
3588 +#endif
3589 +
3590 +void SG_init(void);
3591 +void *SG_start(char *private_key_path, char *public_key_path);
3592 +void SG_stop(void *handle);
3593 +int SG_crypt(void *data, unsigned char *text, int size_text, unsigned char *crypted_text,
3594 + unsigned int crypted_text_buffer_size, int *crypted_size);
3595 +int SG_crypt_v2(void *data, unsigned char *text, int size_text, unsigned char *crypted_text,
3596 + unsigned int crypted_text_buffer_size, int *crypted_size);
3597 +#ifdef __cplusplus
3598 +}
3599 +#endif
3600 +#endif /* #ifdef __SIGN_H__ */
3601 +
3602 --- /dev/null
3603 +++ b/net/rsa/sign_openssl.c
3604 @@ -0,0 +1,437 @@
3605 +/*
3606 + * Signature using OpenSSL
3607 + *
3608 + * This file is part of FONUCS. Copyright (C) 2007 FON Wireless Ltd.
3609 + *
3610 + * Created: 20070417 Pablo Martín Medrano <pablo@fon.com>
3611 + *
3612 + * $Id: sign_openssl.c 346 2007-05-10 19:51:38Z pablo.martin $
3613 + */
3614 +/*
3615 + *
3616 + * How the RSA public and private key was generated
3617 + * To check .FON files
3618 + * openssl genrsa -out private_fon_rsa_key.pem 4096
3619 + * openssl rsa -in private_fon_rsa_key.pem -pubout -out public_fon_rsa_key.pem
3620 + *
3621 + * How the Status Manager public and private key was generated
3622 + * openssl genrsa -out private_sm_rsa_key.pem 2048
3623 + * openssl rsa -in private_sm_rsa_key.pem -pubout -out public_sm_rsa_key.pem
3624 + *
3625 + * How to sign using the RSA private key (This is what fonsign does)
3626 + * openssl dgst -rmd160 -sign private_fon_rsa_key.pem FILE > SIGNATURE
3627 + * How to verify using the RSA public key (This is what fonverify + foncheckrsa does)
3628 + * openssl dgst -rmd160 -verify public_fon_rsa_key.pem -signature SIGNATURE FILE
3629 + * Convert to DER file (to use it in La Fonera)
3630 + * openssl rsa -inform PEM -outform DER -pubin -in public_fon_rsa_key.pem -pubout -out public_fon_rsa_key.der
3631 + */
3632 +#include <openssl/rsa.h>
3633 +#include <openssl/ssl.h>
3634 +#include <openssl/bn.h>
3635 +#include <openssl/pem.h>
3636 +#include <openssl/evp.h>
3637 +#include <sys/stat.h>
3638 +#include <fcntl.h>
3639 +#ifndef __MAINTEST__
3640 +#include "log.h"
3641 +#else
3642 +#define fon_warning printf
3643 +#define fon_debug printf
3644 +#define fon_critical printf
3645 +#endif
3646 +#include "sign.h"
3647 +
3648 +typedef struct {
3649 + RSA *rsa;
3650 + int rsa_size;
3651 + EVP_PKEY *pkey;
3652 + int pkey_size;
3653 + RSA *public_rsa;
3654 + int public_rsa_size;
3655 + EVP_PKEY *public_pkey;
3656 + int public_pkey_size;
3657 +} Sign;
3658 +
3659 +typedef enum {
3660 + KEY_PUBLIC = 0,
3661 + KEY_PRIVATE
3662 +} KEY_TYPE;
3663 +
3664 +static EVP_PKEY *SG_load_key(char *key_path, KEY_TYPE type);
3665 +static unsigned char *load_file_in_buffer(char *path, int *size);
3666 +static int save_file_from_buffer(char *path, char *buffer, int size);
3667 +
3668 +void SG_init(void)
3669 +{
3670 + SSL_load_error_strings();
3671 + SSL_library_init();
3672 + OpenSSL_add_all_algorithms();
3673 + OpenSSL_add_all_ciphers();
3674 + OpenSSL_add_all_digests();
3675 +}
3676 +
3677 +static unsigned char *load_file_in_buffer(char *path, int *size)
3678 +{
3679 + char *buffer;
3680 + struct stat st;
3681 + int fd;
3682 +
3683 + if (stat(path, &st))
3684 + return NULL;
3685 + buffer = (char *)malloc(st.st_size);
3686 + if (buffer == NULL)
3687 + return NULL;
3688 + if ((fd = open(path, O_RDONLY)) == -1) {
3689 + free(buffer);
3690 + return NULL;
3691 + }
3692 + if (read(fd,buffer,st.st_size) != (ssize_t)st.st_size) {
3693 + free(buffer);
3694 + close(fd);
3695 + return NULL;
3696 + }
3697 + *size = (int)st.st_size;
3698 + close(fd);
3699 + return buffer;
3700 +}
3701 +
3702 +static int save_file_from_buffer(char *path, char *buffer, int size)
3703 +{
3704 + int fd;
3705 +
3706 + if ((fd = open(path, O_WRONLY | O_CREAT, 0644)) == -1)
3707 + return -1;
3708 + if (write(fd, buffer, (size_t)size) != ((ssize_t)size)) {
3709 + close(fd);
3710 + return -1;
3711 + }
3712 + close(fd);
3713 + return 0;
3714 +}
3715 +
3716 +static EVP_PKEY *SG_load_key(char *key_path, KEY_TYPE type)
3717 +{
3718 + BIO *key = NULL;
3719 + EVP_PKEY *pkey;
3720 +
3721 + if ((key = BIO_new(BIO_s_file())) == NULL) {
3722 + //ERR_print_errors(err);
3723 + fon_warning("%s: Error calling BIO_new()\n", __FUNCTION__);
3724 + return NULL;
3725 + }
3726 + if (BIO_read_filename(key, key_path) <= 0) {
3727 + fon_warning("%s: Error opening %s\n", __FUNCTION__, key_path);
3728 + // ERR_print_errors(err);
3729 + BIO_free(key);
3730 + }
3731 + if (type == KEY_PUBLIC) {
3732 + pkey = PEM_read_bio_PUBKEY(key, NULL, NULL, NULL);
3733 + } else if (type == KEY_PRIVATE) {
3734 + pkey = PEM_read_bio_PrivateKey(key, NULL, NULL, NULL);
3735 + } else {
3736 + return NULL;
3737 + }
3738 +
3739 + if (pkey == NULL) {
3740 + fon_warning("%s: Error reading %s\n", __FUNCTION__, key_path);
3741 + BIO_free(key);
3742 + return NULL;
3743 + }
3744 + BIO_free(key);
3745 + return pkey;
3746 +}
3747 +
3748 +void *SG_start(char *private_key_path, char *public_key_path)
3749 +{
3750 + Sign *sign;
3751 +
3752 + if ((sign = (Sign *)malloc(sizeof(Sign))) == NULL)
3753 + return NULL;
3754 + memset(sign, 0, sizeof(Sign));
3755 + if (private_key_path != NULL) {
3756 + if ((sign->pkey = SG_load_key(private_key_path, KEY_PRIVATE)) == NULL) {
3757 + fon_warning("%s: Error loading %s", __FUNCTION__, private_key_path);
3758 + return NULL;
3759 + }
3760 + }
3761 + if (public_key_path != NULL) {
3762 + if ((sign->public_pkey = SG_load_key(public_key_path, KEY_PUBLIC)) == NULL) {
3763 + fon_warning("%s: Error loading %s", __FUNCTION__, public_key_path);
3764 + return NULL;
3765 + }
3766 + }
3767 + if (sign->pkey != NULL) {
3768 + sign->pkey_size = EVP_PKEY_size(sign->pkey);
3769 + if ((sign->rsa = EVP_PKEY_get1_RSA(sign->pkey)) == NULL) {
3770 + EVP_PKEY_free(sign->pkey);
3771 + return NULL;
3772 + }
3773 + }
3774 + if (sign->public_pkey != NULL) {
3775 + sign->public_pkey_size = EVP_PKEY_size(sign->public_pkey);
3776 + if ((sign->public_rsa = EVP_PKEY_get1_RSA(sign->public_pkey)) == NULL) {
3777 + EVP_PKEY_free(sign->pkey);
3778 + return NULL;
3779 + }
3780 + }
3781 + if (((sign->rsa == NULL) && (private_key_path != NULL)) ||
3782 + ((sign->public_rsa == NULL) && (public_key_path != NULL))) {
3783 + fon_warning("%s: Error calling EVP_PKEY_get1_RSA()", __FUNCTION__);
3784 + return NULL;
3785 + }
3786 + if (sign->rsa != NULL) {
3787 + sign->rsa_size = RSA_size(sign->rsa);
3788 + if (RSA_check_key(sign->rsa) != 1) {
3789 + fon_warning("%s: RSA key failure", __FUNCTION__);
3790 + return NULL;
3791 + }
3792 + }
3793 +
3794 + return (void *)sign;
3795 +}
3796 +
3797 +void SG_stop(void *handle)
3798 +{
3799 + Sign *sign = (Sign *)handle;
3800 +
3801 + EVP_PKEY_free(sign->pkey);
3802 + EVP_PKEY_free(sign->public_pkey);
3803 + if (sign->rsa != NULL)
3804 + RSA_free(sign->rsa);
3805 + if (sign->public_rsa != NULL)
3806 + RSA_free(sign->public_rsa);
3807 + free(sign);
3808 +}
3809 +
3810 +int SG_verify(void *data, unsigned char *text, unsigned int size_text,
3811 + unsigned char *signature, unsigned int size_signature)
3812 +{
3813 + EVP_MD_CTX mdctx;
3814 + EVP_MD *md;
3815 + EVP_PKEY *pkey;
3816 + int ret;
3817 + Sign *sign = (Sign *)data;
3818 +
3819 + md = (EVP_MD *)EVP_ripemd160();
3820 + if(!EVP_VerifyInit(&mdctx, md))
3821 + return 4;
3822 + if (!EVP_VerifyUpdate(&mdctx, (const void *)text, (unsigned int)size_text)) {
3823 + return 5;
3824 + }
3825 + ret = EVP_VerifyFinal(&mdctx, (const char *)signature, size_signature, sign->public_pkey);
3826 + EVP_PKEY_free(pkey);
3827 + EVP_MD_CTX_cleanup(&mdctx);
3828 + return ret;
3829 +}
3830 +
3831 +int SG_sign(void *data, void *text, unsigned int size_text, void *signature_buffer,
3832 + unsigned int size_signature_buffer, unsigned int *size_signature)
3833 +{
3834 + unsigned char *digest[EVP_MAX_MD_SIZE];
3835 + EVP_MD_CTX mdctx;
3836 + EVP_MD *md;
3837 + int ret;
3838 + Sign *sign = (Sign *)data;
3839 +
3840 + if (size_signature_buffer < sign->pkey_size)
3841 + return 1;
3842 +
3843 + md = (EVP_MD *)EVP_ripemd160();
3844 + EVP_SignInit(&mdctx, md);
3845 + if (!EVP_SignUpdate(&mdctx, (const void *)text, (unsigned int)size_text)) {
3846 + return 2;
3847 + }
3848 + if (!EVP_SignFinal(&mdctx, (unsigned char *)signature_buffer, (unsigned int *)size_signature, sign->pkey)) {
3849 + return 3;
3850 + }
3851 + EVP_MD_CTX_cleanup(&mdctx);
3852 +
3853 + return 0;
3854 +}
3855 +
3856 +/*
3857 + * It's not advised to crypt using RAW ... unless you have crypted the buffer using AES before.
3858 + */
3859 +int SG_crypt(void *data, unsigned char *text, int size_text,
3860 + unsigned char *crypted_text, unsigned int crypted_text_buffer_size,
3861 + int *crypted_size)
3862 +{
3863 + EVP_MD_CTX mdctx;
3864 + EVP_MD *md;
3865 + int retsize;
3866 + Sign *sign = (Sign *)data;
3867 +
3868 + if (crypted_text_buffer_size < sign->pkey_size) {
3869 + fon_critical("%s: size_signature_buffer [%u] < %u", __FUNCTION__, size_text, sign->pkey_size);
3870 + return 1;
3871 + }
3872 + if (size_text != sign->pkey_size) {
3873 + fon_critical("%s: size_text [%u] != %u", __FUNCTION__, size_text, sign->pkey_size);
3874 + return 2;
3875 + }
3876 + /* The buffer is pre-padded with random data ... */
3877 + fon_debug("%s: About to call RSA_private_encrypt(%d, %x, %x, %x, %d)",
3878 + __FUNCTION__, size_text, crypted_text, sign->rsa, RSA_NO_PADDING);
3879 + retsize = RSA_private_encrypt(size_text, text, crypted_text, sign->rsa, RSA_NO_PADDING);
3880 + if (retsize == -1) {
3881 + fon_critical("%s: Error calling RSA_private_encrypt(%d, %x, %x, %x, %d)",
3882 + __FUNCTION__, size_text, crypted_text, sign->rsa, RSA_NO_PADDING);
3883 + return 1;
3884 + }
3885 + *crypted_size = retsize;
3886 + return 0;
3887 +}
3888 +
3889 +/* SG_decrypt */
3890 +int SG_decrypt(void *data, unsigned char *cryptext, int cryptext_size, unsigned char *plaintext,
3891 + int plaintext_buffer_size, int *plaintext_size)
3892 +{
3893 + EVP_MD_CTX mdctx;
3894 + EVP_MD *md;
3895 + int retsize;
3896 + Sign *sign = (Sign *)data;
3897 +
3898 + if (plaintext_buffer_size < sign->public_pkey_size) {
3899 + fon_critical("%s: plaintext_buffer_size [%u] < %u", __FUNCTION__, plaintext_buffer_size, sign->public_pkey_size);
3900 + return 1;
3901 + }
3902 + if (cryptext_size != sign->public_pkey_size) {
3903 + fon_critical("%s: cryptext_size [%u] != %u", __FUNCTION__, cryptext_size, sign->public_pkey_size);
3904 + return 2;
3905 + }
3906 + retsize = RSA_public_decrypt(cryptext_size, cryptext, plaintext, sign->public_rsa, RSA_NO_PADDING);
3907 + if (retsize == -1)
3908 + return 1;
3909 + *plaintext_size = retsize;
3910 + return 0;
3911 +}
3912 +
3913 +#ifdef __MAINTEST__
3914 +int main(int argc, char **argv)
3915 +{
3916 + size_t argv0_size;
3917 + char *token;
3918 +
3919 + argv0_size = strlen(argv[0]);
3920 + if (argv0_size < 7) {
3921 + fprintf(stderr, "%s?", argv[0]);
3922 + return 1;
3923 + }
3924 + token = argv[0] + argv0_size - 7;
3925 +
3926 + SG_init();
3927 + if (!strcmp(token, "fonsign")) {
3928 + return main_fonsign(argc, argv);
3929 + } else if (!strcmp(token, "foncryp")) {
3930 + return main_foncryp(argc, argv);
3931 + }
3932 + fprintf(stderr, "%s?", argv[0]);
3933 + return 1;
3934 +}
3935 +
3936 +int main_foncryp(int argc, char **argv)
3937 +{
3938 + void *handle = NULL;
3939 + int encrypt = 0;
3940 + char *filebuffer = NULL;
3941 + char crypted[1024];
3942 + int size, crypted_size, ret;
3943 +
3944 + if (argc != 5) {
3945 + printf("Usage: %s encrypt|decrypt <key_file> <file> <crypted_file>\n", argv[0]);
3946 + return 1;
3947 + }
3948 + if (!strcmp(argv[1], "encrypt")) {
3949 + printf("Encryption mode\n");
3950 + encrypt = 1;
3951 + } else
3952 + printf("Decryption mode\n");
3953 + if (encrypt)
3954 + handle = SG_start(argv[2], NULL);
3955 + else
3956 + handle = SG_start(NULL, argv[2]);
3957 + if (handle == NULL) {
3958 + printf("Error loading keys\n");
3959 + return 1;
3960 + }
3961 +
3962 + filebuffer = load_file_in_buffer(argv[3], &size);
3963 + if (filebuffer == NULL) {
3964 + printf("Error reading %s\n", argv[3]);
3965 + SG_stop(handle);
3966 + return 1;
3967 + }
3968 + if (encrypt)
3969 + ret = SG_crypt(handle, filebuffer, size, crypted, 1024, &crypted_size);
3970 + else
3971 + ret = SG_decrypt(handle, filebuffer, size, crypted, 1024, &crypted_size);
3972 +
3973 + if (ret) {
3974 + printf("Error crypting %d bytes\n", size);
3975 + SG_stop(handle);
3976 + return 1;
3977 + }
3978 + printf("Crypted size %d\n", crypted_size);
3979 + if (save_file_from_buffer(argv[4], crypted, crypted_size)) {
3980 + printf("Error saving file\n");
3981 + SG_stop(handle);
3982 + return 1;
3983 + }
3984 +
3985 + SG_stop(handle);
3986 + return 0;
3987 +}
3988 +
3989 +int main_fonsign(int argc, char **argv)
3990 +{
3991 + void *handle = NULL;
3992 + char signature_buffer[4096];
3993 + char *signature;
3994 + unsigned int signature_size;
3995 + struct stat st;
3996 + char *filebuffer = NULL;
3997 + int size;
3998 + int ret = -1;
3999 +
4000 + if (argc != 5) {
4001 + fprintf(stderr, "usage: %s <private_key_file> <public_key_file> <file_to_sign> <signature_file>\n", argv[0]);
4002 + goto end;
4003 + }
4004 + handle = SG_start(argv[1], argv[2]);
4005 + if (handle == NULL) {
4006 + fprintf(stderr, "Error calling SG_start(%s)\n", argv[1]);
4007 + goto end;
4008 + }
4009 + filebuffer = load_file_in_buffer(argv[3], &size);
4010 + if (filebuffer == NULL) {
4011 + fprintf(stderr, "Error reading %s\n", argv[3]);
4012 + goto end;
4013 + }
4014 + if (SG_sign(handle, filebuffer, size, signature_buffer, 4096, &signature_size)) {
4015 + fprintf(stderr, "Error calling SG_sign()\n");
4016 + goto end;
4017 + }
4018 + ret = SG_verify(handle, filebuffer, size, signature_buffer, signature_size);
4019 + if (ret == 0)
4020 + fprintf(stderr, "signature failure\n");
4021 + else if (ret == 1) {
4022 + fprintf(stderr, "signature ok\n");
4023 + ret = 0;
4024 + } else {
4025 + fprintf(stderr, "signature error\n");
4026 + goto end;
4027 + }
4028 + if (save_file_from_buffer(argv[4], signature_buffer, signature_size)) {
4029 + fprintf(stderr, "Error writing to %s\n", argv[4]);
4030 + goto end;
4031 + }
4032 + ret = 0;
4033 +end:
4034 + if (filebuffer != NULL)
4035 + free(filebuffer);
4036 + if (handle != NULL)
4037 + SG_stop(handle);
4038 + return ret;
4039 +}
4040 +#endif
4041 +
4042 --- /dev/null
4043 +++ b/net/uip-0.9/Makefile
4044 @@ -0,0 +1,54 @@
4045 +# Copyright (c) 2001, Adam Dunkels.
4046 +# All rights reserved.
4047 +#
4048 +# Redistribution and use in source and binary forms, with or without
4049 +# modification, are permitted provided that the following conditions
4050 +# are met:
4051 +# 1. Redistributions of source code must retain the above copyright
4052 +# notice, this list of conditions and the following disclaimer.
4053 +# 2. Redistributions in binary form must reproduce the above copyright
4054 +# notice, this list of conditions and the following disclaimer in the
4055 +# documentation and/or other materials provided with the distribution.
4056 +# 3. All advertising materials mentioning features or use of this software
4057 +# must display the following acknowledgement:
4058 +# This product includes software developed by Adam Dunkels.
4059 +# 4. The name of the author may not be used to endorse or promote
4060 +# products derived from this software without specific prior
4061 +# written permission.
4062 +#
4063 +# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
4064 +# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
4065 +# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
4066 +# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
4067 +# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
4068 +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
4069 +# GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
4070 +# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
4071 +# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
4072 +# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
4073 +# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
4074 +#
4075 +# This file is part of the uIP TCP/IP stack.
4076 +#
4077 +# $Id: Makefile,v 1.8.2.2 2003/10/04 22:54:17 adam Exp $
4078 +#
4079 +
4080 +CC=gcc
4081 +CFLAGS=-Wall -fpack-struct -DDUMP=0
4082 +
4083 +all: uip
4084 +
4085 +uip: uip.o uip_arch.o tapdev.o httpd.o main.o fs.o uip_arp.o
4086 + $(CC) $(CFLAGS) $(LDFLAGS) $^ -o $@
4087 +
4088 +%.o: %.c
4089 + $(CC) $(CFLAGS) -c $^ -o $@
4090 +
4091 +clean:
4092 + rm -f *.o *~ *core uip
4093 +
4094 +
4095 +
4096 +
4097 +
4098 +
4099 --- /dev/null
4100 +++ b/net/uip-0.9/fs.c
4101 @@ -0,0 +1,154 @@
4102 +/**
4103 + * \addtogroup httpd
4104 + * @{
4105 + */
4106 +
4107 +/**
4108 + * \file
4109 + * HTTP server read-only file system code.
4110 + * \author Adam Dunkels <adam@dunkels.com>
4111 + *
4112 + * A simple read-only filesystem.
4113 + */
4114 +
4115 +/*
4116 + * Copyright (c) 2001, Swedish Institute of Computer Science.
4117 + * All rights reserved.
4118 + *
4119 + * Redistribution and use in source and binary forms, with or without
4120 + * modification, are permitted provided that the following conditions
4121 + * are met:
4122 + * 1. Redistributions of source code must retain the above copyright
4123 + * notice, this list of conditions and the following disclaimer.
4124 + * 2. Redistributions in binary form must reproduce the above copyright
4125 + * notice, this list of conditions and the following disclaimer in the
4126 + * documentation and/or other materials provided with the distribution.
4127 + * 3. Neither the name of the Institute nor the names of its contributors
4128 + * may be used to endorse or promote products derived from this software
4129 + * without specific prior written permission.
4130 + *
4131 + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
4132 + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
4133 + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
4134 + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
4135 + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
4136 + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
4137 + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
4138 + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
4139 + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
4140 + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
4141 + * SUCH DAMAGE.
4142 + *
4143 + * This file is part of the lwIP TCP/IP stack.
4144 + *
4145 + * Author: Adam Dunkels <adam@sics.se>
4146 + *
4147 + * $Id: fs.c,v 1.7.2.3 2003/10/07 13:22:27 adam Exp $
4148 + */
4149 +
4150 +#include "uip.h"
4151 +#include "httpd.h"
4152 +#include "fs.h"
4153 +#include "fsdata.h"
4154 +
4155 +#include "fsdata.c"
4156 +
4157 +#ifdef FS_STATISTICS
4158 +#if FS_STATISTICS == 1
4159 +static u16_t count[FS_NUMFILES];
4160 +#endif /* FS_STATISTICS */
4161 +#endif /* FS_STATISTICS */
4162 +
4163 +/*-----------------------------------------------------------------------------------*/
4164 +static u8_t
4165 +fs_strcmp(const char *str1, const char *str2)
4166 +{
4167 + u8_t i;
4168 + i = 0;
4169 + loop:
4170 +
4171 + if(str2[i] == 0 ||
4172 + str1[i] == '\r' ||
4173 + str1[i] == '\n') {
4174 + return 0;
4175 + }
4176 +
4177 + if(str1[i] != str2[i]) {
4178 + return 1;
4179 + }
4180 +
4181 +
4182 + ++i;
4183 + goto loop;
4184 +}
4185 +/*-----------------------------------------------------------------------------------*/
4186 +int
4187 +fs_open(const char *name, struct fs_file *file)
4188 +{
4189 +#ifdef FS_STATISTICS
4190 +#if FS_STATISTICS == 1
4191 + u16_t i = 0;
4192 +#endif /* FS_STATISTICS */
4193 +#endif /* FS_STATISTICS */
4194 + struct fsdata_file_noconst *f;
4195 +
4196 + for(f = (struct fsdata_file_noconst *)FS_ROOT;
4197 + f != NULL;
4198 + f = (struct fsdata_file_noconst *)f->next) {
4199 +
4200 + if(fs_strcmp(name, f->name) == 0) {
4201 + file->data = f->data;
4202 + file->len = f->len;
4203 +#ifdef FS_STATISTICS
4204 +#if FS_STATISTICS == 1
4205 + ++count[i];
4206 +#endif /* FS_STATISTICS */
4207 +#endif /* FS_STATISTICS */
4208 + return 1;
4209 + }
4210 +#ifdef FS_STATISTICS
4211 +#if FS_STATISTICS == 1
4212 + ++i;
4213 +#endif /* FS_STATISTICS */
4214 +#endif /* FS_STATISTICS */
4215 +
4216 + }
4217 + return 0;
4218 +}
4219 +/*-----------------------------------------------------------------------------------*/
4220 +void
4221 +fs_init(void)
4222 +{
4223 +#ifdef FS_STATISTICS
4224 +#if FS_STATISTICS == 1
4225 + u16_t i;
4226 + for(i = 0; i < FS_NUMFILES; i++) {
4227 + count[i] = 0;
4228 + }
4229 +#endif /* FS_STATISTICS */
4230 +#endif /* FS_STATISTICS */
4231 +}
4232 +/*-----------------------------------------------------------------------------------*/
4233 +#ifdef FS_STATISTICS
4234 +#if FS_STATISTICS == 1
4235 +u16_t fs_count
4236 +(char *name)
4237 +{
4238 + struct fsdata_file_noconst *f;
4239 + u16_t i;
4240 +
4241 + i = 0;
4242 + for(f = (struct fsdata_file_noconst *)FS_ROOT;
4243 + f != NULL;
4244 + f = (struct fsdata_file_noconst *)f->next) {
4245 +
4246 + if(fs_strcmp(name, f->name) == 0) {
4247 + return count[i];
4248 + }
4249 + ++i;
4250 + }
4251 + return 0;
4252 +}
4253 +#endif /* FS_STATISTICS */
4254 +#endif /* FS_STATISTICS */
4255 +/*-----------------------------------------------------------------------------------*/
4256 --- /dev/null
4257 +++ b/net/uip-0.9/fs.h
4258 @@ -0,0 +1,80 @@
4259 +/**
4260 + * \addtogroup httpd
4261 + * @{
4262 + */
4263 +
4264 +/**
4265 + * \file
4266 + * HTTP server read-only file system header file.
4267 + * \author Adam Dunkels <adam@dunkels.com>
4268 + */
4269 +
4270 +/*
4271 + * Copyright (c) 2001, Swedish Institute of Computer Science.
4272 + * All rights reserved.
4273 + *
4274 + * Redistribution and use in source and binary forms, with or without
4275 + * modification, are permitted provided that the following conditions
4276 + * are met:
4277 + * 1. Redistributions of source code must retain the above copyright
4278 + * notice, this list of conditions and the following disclaimer.
4279 + * 2. Redistributions in binary form must reproduce the above copyright
4280 + * notice, this list of conditions and the following disclaimer in the
4281 + * documentation and/or other materials provided with the distribution.
4282 + * 3. Neither the name of the Institute nor the names of its contributors
4283 + * may be used to endorse or promote products derived from this software
4284 + * without specific prior written permission.
4285 + *
4286 + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
4287 + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
4288 + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
4289 + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
4290 + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
4291 + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
4292 + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
4293 + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
4294 + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
4295 + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
4296 + * SUCH DAMAGE.
4297 + *
4298 + * This file is part of the lwIP TCP/IP stack.
4299 + *
4300 + * Author: Adam Dunkels <adam@sics.se>
4301 + *
4302 + * $Id: fs.h,v 1.6.2.3 2003/10/07 13:22:27 adam Exp $
4303 + */
4304 +#ifndef __FS_H__
4305 +#define __FS_H__
4306 +
4307 +#include "uip.h"
4308 +
4309 +/**
4310 + * An open file in the read-only file system.
4311 + */
4312 +struct fs_file {
4313 + char *data; /**< The actual file data. */
4314 + int len; /**< The length of the file data. */
4315 +};
4316 +
4317 +/**
4318 + * Open a file in the read-only file system.
4319 + *
4320 + * \param name The name of the file.
4321 + *
4322 + * \param file The file pointer, which must be allocated by caller and
4323 + * will be filled in by the function.
4324 + */
4325 +int fs_open(const char *name, struct fs_file *file);
4326 +
4327 +#ifdef FS_STATISTICS
4328 +#if FS_STATISTICS == 1
4329 +u16_t fs_count(char *name);
4330 +#endif /* FS_STATISTICS */
4331 +#endif /* FS_STATISTICS */
4332 +
4333 +/**
4334 + * Initialize the read-only file system.
4335 + */
4336 +void fs_init(void);
4337 +
4338 +#endif /* __FS_H__ */
4339 --- /dev/null
4340 +++ b/net/uip-0.9/fsdata.c
4341 @@ -0,0 +1,199 @@
4342 +static const char data_flashing_html[] = {
4343 + /* /flashing.html */
4344 + 0x2f, 0x66, 0x6c, 0x61, 0x73, 0x68, 0x69, 0x6e, 0x67, 0x2e, 0x68, 0x74, 0x6d, 0x6c, 0,
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4369 + 0x74, 0x6d, 0x6c, 0x3e, 0xa, };
4370 +
4371 +static const char data_fail_html[] = {
4372 + /* /fail.html */
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4408 + 0x64, 0x79, 0x3e, 0xa, 0x3c, 0x2f, 0x68, 0x74, 0x6d, 0x6c,
4409 + 0x3e, 0xa, };
4410 +
4411 +static const char data_404_html[] = {
4412 + /* /404.html */
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4433 + 0x6c, 0x3e, };
4434 +
4435 +static const char data_index_html[] = {
4436 + /* /index.html */
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4479 + 0x3c, 0x2f, 0x68, 0x74, 0x6d, 0x6c, 0x3e, 0xa, };
4480 +
4481 +static const char data_flash_html[] = {
4482 + /* /flash.html */
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4526 + 0x74, 0x6d, 0x6c, 0x3e, 0xa, };
4527 +
4528 +const struct fsdata_file file_flashing_html[] = {{NULL, data_flashing_html, data_flashing_html + 15, sizeof(data_flashing_html) - 15}};
4529 +
4530 +const struct fsdata_file file_fail_html[] = {{file_flashing_html, data_fail_html, data_fail_html + 11, sizeof(data_fail_html) - 11}};
4531 +
4532 +const struct fsdata_file file_404_html[] = {{file_fail_html, data_404_html, data_404_html + 10, sizeof(data_404_html) - 10}};
4533 +
4534 +const struct fsdata_file file_index_html[] = {{file_404_html, data_index_html, data_index_html + 12, sizeof(data_index_html) - 12}};
4535 +
4536 +const struct fsdata_file file_flash_html[] = {{file_index_html, data_flash_html, data_flash_html + 12, sizeof(data_flash_html) - 12}};
4537 +
4538 +#define FS_ROOT file_flash_html
4539 +
4540 +#define FS_NUMFILES 5
4541 \ No newline at end of file
4542 --- /dev/null
4543 +++ b/net/uip-0.9/fsdata.h
4544 @@ -0,0 +1,64 @@
4545 +/*
4546 + * Copyright (c) 2001, Swedish Institute of Computer Science.
4547 + * All rights reserved.
4548 + *
4549 + * Redistribution and use in source and binary forms, with or without
4550 + * modification, are permitted provided that the following conditions
4551 + * are met:
4552 + * 1. Redistributions of source code must retain the above copyright
4553 + * notice, this list of conditions and the following disclaimer.
4554 + * 2. Redistributions in binary form must reproduce the above copyright
4555 + * notice, this list of conditions and the following disclaimer in the
4556 + * documentation and/or other materials provided with the distribution.
4557 + * 3. Neither the name of the Institute nor the names of its contributors
4558 + * may be used to endorse or promote products derived from this software
4559 + * without specific prior written permission.
4560 + *
4561 + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
4562 + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
4563 + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
4564 + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
4565 + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
4566 + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
4567 + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
4568 + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
4569 + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
4570 + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
4571 + * SUCH DAMAGE.
4572 + *
4573 + * This file is part of the lwIP TCP/IP stack.
4574 + *
4575 + * Author: Adam Dunkels <adam@sics.se>
4576 + *
4577 + * $Id: fsdata.h,v 1.4.2.1 2003/10/04 22:54:06 adam Exp $
4578 + */
4579 +#ifndef __FSDATA_H__
4580 +#define __FSDATA_H__
4581 +
4582 +#include "uipopt.h"
4583 +
4584 +struct fsdata_file {
4585 + const struct fsdata_file *next;
4586 + const char *name;
4587 + const char *data;
4588 + const int len;
4589 +#ifdef FS_STATISTICS
4590 +#if FS_STATISTICS == 1
4591 + u16_t count;
4592 +#endif /* FS_STATISTICS */
4593 +#endif /* FS_STATISTICS */
4594 +};
4595 +
4596 +struct fsdata_file_noconst {
4597 + struct fsdata_file *next;
4598 + char *name;
4599 + char *data;
4600 + int len;
4601 +#ifdef FS_STATISTICS
4602 +#if FS_STATISTICS == 1
4603 + u16_t count;
4604 +#endif /* FS_STATISTICS */
4605 +#endif /* FS_STATISTICS */
4606 +};
4607 +
4608 +#endif /* __FSDATA_H__ */
4609 --- /dev/null
4610 +++ b/net/uip-0.9/httpd.c
4611 @@ -0,0 +1,278 @@
4612 +#include "uip.h"
4613 +#include "httpd.h"
4614 +#include "fs.h"
4615 +#include "fsdata.h"
4616 +#include <asm/addrspace.h>
4617 +
4618 +#define HTTP_NONE 0
4619 +#define HTTP_FILE 1
4620 +#define HTTP_FIRMWARE 2
4621 +
4622 +#define PRINT(x) printf("%s", x)
4623 +#define PRINTLN(x) printf("%s\n", x)
4624 +
4625 +extern unsigned long do_http_tmp_address(void);
4626 +
4627 +struct httpd_state *hs;
4628 +
4629 +extern const struct fsdata_file file_index_html;
4630 +extern const struct fsdata_file file_404_html;
4631 +extern const struct fsdata_file file_flash_html;
4632 +extern int httpd_upload_complete;
4633 +extern unsigned char *httpd_upload_data;
4634 +unsigned char *upload_data;
4635 +extern ulong NetBootFileXferSize;
4636 +int upload_running = 0;
4637 +
4638 +#define ISO_G 0x47
4639 +#define ISO_E 0x45
4640 +#define ISO_T 0x54
4641 +#define ISO_P 0x50
4642 +#define ISO_O 0x4f
4643 +#define ISO_S 0x53
4644 +#define ISO_T 0x54
4645 +#define ISO_slash 0x2f
4646 +#define ISO_c 0x63
4647 +#define ISO_g 0x67
4648 +#define ISO_i 0x69
4649 +#define ISO_space 0x20
4650 +#define ISO_nl 0x0a
4651 +#define ISO_cr 0x0d
4652 +#define ISO_a 0x61
4653 +#define ISO_t 0x74
4654 +#define ISO_hash 0x23
4655 +#define ISO_period 0x2e
4656 +
4657 +static char eol[3] = { 0x0d, 0x0a, 0x00 };
4658 +static char eol2[5] = { 0x0d, 0x0a, 0x0d, 0x0a, 0x00 };
4659 +static char boundary[128];
4660 +static int boundary_len = 0;
4661 +
4662 +/* we use this so that we can do without the ctype library */
4663 +#define is_digit(c) ((c) >= '0' && (c) <= '9')
4664 +static int atoi(const char *s)
4665 +{
4666 + int i=0;
4667 +
4668 + while (is_digit(*s))
4669 + i = i*10 + *(s++) - '0';
4670 + return i;
4671 +}
4672 +
4673 +void
4674 +httpd_init(void)
4675 +{
4676 + fs_init();
4677 + uip_listen(HTONS(80));
4678 +}
4679 +
4680 +void
4681 +httpd_appcall(void)
4682 +{
4683 + struct fs_file fsfile;
4684 + u8_t i;
4685 + switch(uip_conn->lport) {
4686 + case HTONS(80):
4687 + hs = (struct httpd_state *)(uip_conn->appstate);
4688 + if(uip_connected())
4689 + {
4690 + hs->state = HTTP_NONE;
4691 + hs->count = 0;
4692 + return;
4693 + } else if(uip_poll())
4694 + {
4695 + if(hs->count++ >= 1000) {
4696 + uip_abort();
4697 + }
4698 + return;
4699 + } else if(uip_newdata() && hs->state == HTTP_NONE)
4700 + {
4701 + if(uip_appdata[0] == ISO_G &&
4702 + uip_appdata[1] == ISO_E &&
4703 + uip_appdata[2] == ISO_T &&
4704 + uip_appdata[3] == ISO_space)
4705 + {
4706 + hs->state = HTTP_FILE;
4707 + }
4708 + if(uip_appdata[0] == ISO_P &&
4709 + uip_appdata[1] == ISO_O &&
4710 + uip_appdata[2] == ISO_S &&
4711 + uip_appdata[3] == ISO_T &&
4712 + uip_appdata[4] == ISO_space)
4713 + {
4714 + hs->state = HTTP_FIRMWARE;
4715 + }
4716 + if(hs->state == HTTP_NONE)
4717 + {
4718 + uip_abort();
4719 + return;
4720 + }
4721 + if(hs->state == HTTP_FILE)
4722 + {
4723 + for(i = 4; i < 40; ++i)
4724 + {
4725 + if(uip_appdata[i] == ISO_space ||
4726 + uip_appdata[i] == ISO_cr ||
4727 + uip_appdata[i] == ISO_nl)
4728 + {
4729 + uip_appdata[i] = 0;
4730 + break;
4731 + }
4732 + }
4733 +
4734 + PRINT("request for file ");
4735 + PRINTLN(&uip_appdata[4]);
4736 + if(uip_appdata[4] == ISO_slash &&
4737 + uip_appdata[5] == 0)
4738 + {
4739 + fs_open(file_index_html.name, &fsfile);
4740 + } else {
4741 + if(!fs_open((const char *)&uip_appdata[4], &fsfile))
4742 + {
4743 + PRINTLN("couldn't open file");
4744 + fs_open(file_index_html.name, &fsfile);
4745 + }
4746 + }
4747 + hs->script = 0;
4748 + hs->state = HTTP_FILE;
4749 + hs->dataptr = fsfile.data;
4750 + hs->count = fsfile.len;
4751 + }
4752 + if(hs->state == HTTP_FIRMWARE)
4753 + {
4754 + unsigned char *start = (unsigned char*)uip_appdata;
4755 + char *clen = strstr(start, "Content-Length:");
4756 + int len = 0;
4757 + unsigned char *next, *end;
4758 + unsigned char *boundary_start;
4759 + int i;
4760 + uip_appdata[uip_len] = '\0';
4761 + if(clen)
4762 + {
4763 + clen += sizeof("Content-Length:");
4764 + next = strstr(clen, eol);
4765 + if(next)
4766 + {
4767 + len = atoi(clen);
4768 + next++;
4769 + printf("expecting %d bytes\n", len);
4770 + upload_data = httpd_upload_data = (unsigned char *)do_http_tmp_address();
4771 + printf("received data will be stored at 0x%08X\n", upload_data);
4772 + if(!upload_data)
4773 + {
4774 + printf("failed to allocate memory\n");
4775 + uip_close();
4776 + return;
4777 + }
4778 + } else {
4779 + uip_close();
4780 + return;
4781 + }
4782 + }
4783 + if(len < 4 * 1024)
4784 + {
4785 + uip_close();
4786 + return;
4787 + }
4788 + boundary_start = strstr(next, "---");
4789 + if(!boundary_start)
4790 + {
4791 + uip_close();
4792 + return;
4793 + }
4794 + end = strstr(boundary_start, eol);
4795 + if(!eol)
4796 + {
4797 + uip_close();
4798 + return;
4799 + }
4800 + boundary_len = end - boundary_start;
4801 + memcpy(boundary, boundary_start, boundary_len);
4802 + boundary[boundary_len] = 0;
4803 + next = strstr(boundary_start, "name=\"firmware\";");
4804 + if(!next)
4805 + {
4806 + uip_close();
4807 + return;
4808 + }
4809 + next = strstr(next, eol2);
4810 + if(!next)
4811 + {
4812 + printf("could not find start of data\n");
4813 + uip_close();
4814 + return;
4815 + }
4816 + next += 4;
4817 + hs->script = 0;
4818 + hs->state = HTTP_FIRMWARE;
4819 + hs->upload = uip_len - (next - start);
4820 + hs->upload_total = len - (int)(next - boundary_start);
4821 + hs->upload_total -= (strlen(boundary) + 6);
4822 + //printf("storing %d bytes at %p\n", (int)hs->upload, upload_data);
4823 + for(i = 0; i < hs->upload; i++)
4824 + upload_data[i] = next[i];
4825 + upload_data += (int)hs->upload;
4826 + printf("%d / %d\n", (int)hs->upload, hs->upload_total);
4827 + uip_slen = 0;
4828 + return;
4829 + }
4830 + }
4831 +
4832 + if(hs->state == HTTP_FIRMWARE)
4833 + {
4834 + if(uip_newdata())
4835 + {
4836 + int i;
4837 + hs->count = 0;
4838 + uip_appdata[uip_len] = '\0';
4839 + hs->upload += uip_len;
4840 + //printf("storing %d bytes at %p\n", uip_len, upload_data);
4841 + printf("%d / %d\n", (int)hs->upload, hs->upload_total);
4842 + for(i = 0; i < uip_len; i++)
4843 + upload_data[i] = uip_appdata[i];
4844 + upload_data += uip_len;
4845 + uip_slen = 0;
4846 + if(hs->upload >= hs->upload_total)
4847 + {
4848 + upload_running = 1;
4849 + NetBootFileXferSize = hs->upload_total;
4850 + fs_open(file_flash_html.name, &fsfile);
4851 + hs->script = 0;
4852 + hs->state = HTTP_FILE;
4853 + hs->dataptr = fsfile.data;
4854 + hs->count = fsfile.len;
4855 + }
4856 + }
4857 + }
4858 + if(hs->state == HTTP_FILE)
4859 + {
4860 + if(uip_acked())
4861 + {
4862 + if(hs->count >= uip_conn->len)
4863 + {
4864 + hs->count -= uip_conn->len;
4865 + hs->dataptr += uip_conn->len;
4866 + } else {
4867 + hs->count = 0;
4868 + }
4869 + if(hs->count == 0)
4870 + {
4871 + if(upload_running)
4872 + {
4873 + int i;
4874 + httpd_upload_complete = 1;
4875 + // for(i = 0; i < hs->upload_total; i++)
4876 + // printf("%c", httpd_upload_data[i]);
4877 + }
4878 + uip_close();
4879 + }
4880 + }
4881 + uip_send(hs->dataptr, hs->count);
4882 + }
4883 + break;
4884 +
4885 + default:
4886 + uip_abort();
4887 + break;
4888 + }
4889 +}
4890 --- /dev/null
4891 +++ b/net/uip-0.9/httpd.h
4892 @@ -0,0 +1,83 @@
4893 +/**
4894 + * \addtogroup httpd
4895 + * @{
4896 + */
4897 +
4898 +/**
4899 + * \file
4900 + * HTTP server header file.
4901 + * \author Adam Dunkels <adam@dunkels.com>
4902 + */
4903 +
4904 +/*
4905 + * Copyright (c) 2001, Adam Dunkels.
4906 + * All rights reserved.
4907 + *
4908 + * Redistribution and use in source and binary forms, with or without
4909 + * modification, are permitted provided that the following conditions
4910 + * are met:
4911 + * 1. Redistributions of source code must retain the above copyright
4912 + * notice, this list of conditions and the following disclaimer.
4913 + * 2. Redistributions in binary form must reproduce the above copyright
4914 + * notice, this list of conditions and the following disclaimer in the
4915 + * documentation and/or other materials provided with the distribution.
4916 + * 3. The name of the author may not be used to endorse or promote
4917 + * products derived from this software without specific prior
4918 + * written permission.
4919 + *
4920 + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
4921 + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
4922 + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
4923 + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
4924 + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
4925 + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
4926 + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
4927 + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
4928 + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
4929 + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
4930 + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
4931 + *
4932 + * This file is part of the uIP TCP/IP stack.
4933 + *
4934 + * $Id: httpd.h,v 1.4.2.3 2003/10/06 22:56:44 adam Exp $
4935 + *
4936 + */
4937 +
4938 +#ifndef __HTTPD_H__
4939 +#define __HTTPD_H__
4940 +
4941 +void httpd_init(void);
4942 +void httpd_appcall(void);
4943 +
4944 +/* UIP_APPCALL: the name of the application function. This function
4945 + must return void and take no arguments (i.e., C type "void
4946 + appfunc(void)"). */
4947 +#ifndef UIP_APPCALL
4948 +#define UIP_APPCALL httpd_appcall
4949 +#endif
4950 +
4951 +struct httpd_state {
4952 + u8_t state;
4953 + u16_t count;
4954 + char *dataptr;
4955 + char *script;
4956 + unsigned int upload;
4957 + unsigned int upload_total;
4958 +};
4959 +
4960 +
4961 +/* UIP_APPSTATE_SIZE: The size of the application-specific state
4962 + stored in the uip_conn structure. */
4963 +#ifndef UIP_APPSTATE_SIZE
4964 +#define UIP_APPSTATE_SIZE (sizeof(struct httpd_state))
4965 +#endif
4966 +
4967 +#define FS_STATISTICS 1
4968 +
4969 +extern struct httpd_state *hs;
4970 +
4971 +
4972 +/* we copy the data to RAM+10MB */
4973 +#define TMP_DATA 0x8A100000
4974 +
4975 +#endif /* __HTTPD_H__ */
4976 --- /dev/null
4977 +++ b/net/uip-0.9/main.c
4978 @@ -0,0 +1,88 @@
4979 +/*
4980 + * Copyright (c) 2001-2003, Adam Dunkels.
4981 + * All rights reserved.
4982 + *
4983 + * Redistribution and use in source and binary forms, with or without
4984 + * modification, are permitted provided that the following conditions
4985 + * are met:
4986 + * 1. Redistributions of source code must retain the above copyright
4987 + * notice, this list of conditions and the following disclaimer.
4988 + * 2. Redistributions in binary form must reproduce the above copyright
4989 + * notice, this list of conditions and the following disclaimer in the
4990 + * documentation and/or other materials provided with the distribution.
4991 + * 3. The name of the author may not be used to endorse or promote
4992 + * products derived from this software without specific prior
4993 + * written permission.
4994 + *
4995 + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
4996 + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
4997 + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
4998 + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
4999 + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
5000 + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
5001 + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
5002 + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
5003 + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
5004 + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
5005 + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
5006 + *
5007 + * This file is part of the uIP TCP/IP stack.
5008 + *
5009 + * $Id: main.c,v 1.10.2.1 2003/10/04 22:54:17 adam Exp $
5010 + *
5011 + */
5012 +
5013 +
5014 +#include "uip.h"
5015 +#include "uip_arp.h"
5016 +#include "tapdev.h"
5017 +#include "httpd.h"
5018 +
5019 +#define BUF ((struct uip_eth_hdr *)&uip_buf[0])
5020 +
5021 +#ifndef NULL
5022 +#define NULL (void *)0
5023 +#endif /* NULL */
5024 +
5025 +/*-----------------------------------------------------------------------------------*/
5026 +int
5027 +main(void)
5028 +{
5029 + u8_t i, arptimer;
5030 + tapdev_init();
5031 + uip_init();
5032 + httpd_init();
5033 + arptimer = 0;
5034 + while(1) {
5035 + uip_len = tapdev_read();
5036 + if(uip_len == 0) {
5037 + for(i = 0; i < UIP_CONNS; i++) {
5038 + uip_periodic(i);
5039 + if(uip_len > 0) {
5040 + uip_arp_out();
5041 + tapdev_send();
5042 + }
5043 + }
5044 +
5045 + if(++arptimer == 20) {
5046 + uip_arp_timer();
5047 + arptimer = 0;
5048 + }
5049 + } else {
5050 + if(BUF->type == htons(UIP_ETHTYPE_IP)) {
5051 + uip_arp_ipin();
5052 + uip_input();
5053 + if(uip_len > 0) {
5054 + uip_arp_out();
5055 + tapdev_send();
5056 + }
5057 + } else if(BUF->type == htons(UIP_ETHTYPE_ARP)) {
5058 + uip_arp_arpin();
5059 + if(uip_len > 0) {
5060 + tapdev_send();
5061 + }
5062 + }
5063 + }
5064 + }
5065 + return 0;
5066 +}
5067 --- /dev/null
5068 +++ b/net/uip-0.9/tapdev.c
5069 @@ -0,0 +1,192 @@
5070 +/*
5071 + * Copyright (c) 2001, Swedish Institute of Computer Science.
5072 + * All rights reserved.
5073 + *
5074 + * Redistribution and use in source and binary forms, with or without
5075 + * modification, are permitted provided that the following conditions
5076 + * are met:
5077 + *
5078 + * 1. Redistributions of source code must retain the above copyright
5079 + * notice, this list of conditions and the following disclaimer.
5080 + *
5081 + * 2. Redistributions in binary form must reproduce the above copyright
5082 + * notice, this list of conditions and the following disclaimer in the
5083 + * documentation and/or other materials provided with the distribution.
5084 + *
5085 + * 3. Neither the name of the Institute nor the names of its contributors
5086 + * may be used to endorse or promote products derived from this software
5087 + * without specific prior written permission.
5088 + *
5089 + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
5090 + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
5091 + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
5092 + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
5093 + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
5094 + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
5095 + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
5096 + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
5097 + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
5098 + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
5099 + * SUCH DAMAGE.
5100 + *
5101 + * Author: Adam Dunkels <adam@sics.se>
5102 + *
5103 + * $Id: tapdev.c,v 1.7.2.1 2003/10/07 13:23:19 adam Exp $
5104 + */
5105 +
5106 +
5107 +#include <fcntl.h>
5108 +#include <stdlib.h>
5109 +#include <stdio.h>
5110 +#include <unistd.h>
5111 +#include <string.h>
5112 +#include <sys/ioctl.h>
5113 +#include <sys/socket.h>
5114 +#include <sys/types.h>
5115 +#include <sys/time.h>
5116 +#include <sys/uio.h>
5117 +#include <sys/socket.h>
5118 +
5119 +#ifdef linux
5120 +#include <sys/ioctl.h>
5121 +#include <linux/if.h>
5122 +#include <linux/if_tun.h>
5123 +#define DEVTAP "/dev/net/tun"
5124 +#else /* linux */
5125 +#define DEVTAP "/dev/tap0"
5126 +#endif /* linux */
5127 +
5128 +#include "uip.h"
5129 +
5130 +static int fd;
5131 +
5132 +static unsigned long lasttime;
5133 +static struct timezone tz;
5134 +
5135 +/*-----------------------------------------------------------------------------------*/
5136 +void
5137 +tapdev_init(void)
5138 +{
5139 + char buf[1024];
5140 +
5141 + fd = open(DEVTAP, O_RDWR);
5142 + if(fd == -1) {
5143 + perror("tapdev: tapdev_init: open");
5144 + exit(1);
5145 + }
5146 +
5147 +#ifdef linux
5148 + {
5149 + struct ifreq ifr;
5150 + memset(&ifr, 0, sizeof(ifr));
5151 + ifr.ifr_flags = IFF_TAP|IFF_NO_PI;
5152 + if (ioctl(fd, TUNSETIFF, (void *) &ifr) < 0) {
5153 + perror(buf);
5154 + exit(1);
5155 + }
5156 + }
5157 +#endif /* Linux */
5158 +
5159 + snprintf(buf, sizeof(buf), "ifconfig tap0 inet %d.%d.%d.%d",
5160 + UIP_DRIPADDR0, UIP_DRIPADDR1, UIP_DRIPADDR2, UIP_DRIPADDR3);
5161 + system(buf);
5162 +
5163 + lasttime = 0;
5164 +}
5165 +
5166 +void dump_mem(int type, int len)
5167 +{
5168 +#if DUMP == 1
5169 + int i;
5170 + for(i = 0; i < len; i++)
5171 + printf("%c", uip_buf[i]);
5172 + if(type)
5173 + {
5174 + printf("\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01");
5175 + printf("\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01\01");
5176 + } else {
5177 + printf("\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02");
5178 + printf("\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02\02");
5179 + }
5180 + fflush(stdout);
5181 +#endif
5182 +}
5183 +
5184 +/*-----------------------------------------------------------------------------------*/
5185 +unsigned int
5186 +tapdev_read(void)
5187 +{
5188 + fd_set fdset;
5189 + struct timeval tv, now;
5190 + int ret;
5191 +
5192 + if(lasttime >= 500000) {
5193 + lasttime = 0;
5194 + return 0;
5195 + }
5196 +
5197 + tv.tv_sec = 0;
5198 + tv.tv_usec = 500000 - lasttime;
5199 +
5200 +
5201 + FD_ZERO(&fdset);
5202 + FD_SET(fd, &fdset);
5203 +
5204 + gettimeofday(&now, &tz);
5205 + ret = select(fd + 1, &fdset, NULL, NULL, &tv);
5206 + if(ret == 0) {
5207 + lasttime = 0;
5208 + return 0;
5209 + }
5210 + ret = read(fd, uip_buf, UIP_BUFSIZE);
5211 + if(ret == -1) {
5212 + perror("tap_dev: tapdev_read: read");
5213 + }
5214 + gettimeofday(&tv, &tz);
5215 + lasttime += (tv.tv_sec - now.tv_sec) * 1000000 + (tv.tv_usec - now.tv_usec);
5216 + dump_mem(0, ret);
5217 + return ret;
5218 +}
5219 +/*-----------------------------------------------------------------------------------*/
5220 +void
5221 +tapdev_send(void)
5222 +{
5223 + int ret;
5224 + struct iovec iov[2];
5225 +
5226 +#ifdef linux
5227 + {
5228 + char tmpbuf[UIP_BUFSIZE];
5229 + int i;
5230 +
5231 + for(i = 0; i < 40 + UIP_LLH_LEN; i++) {
5232 + tmpbuf[i] = uip_buf[i];
5233 + }
5234 +
5235 + for(; i < uip_len; i++) {
5236 + tmpbuf[i] = uip_appdata[i - 40 - UIP_LLH_LEN];
5237 + }
5238 +
5239 + ret = write(fd, tmpbuf, uip_len);
5240 + }
5241 +#else
5242 +
5243 + if(uip_len < 40 + UIP_LLH_LEN) {
5244 + ret = write(fd, uip_buf, uip_len + UIP_LLH_LEN);
5245 + } else {
5246 + iov[0].iov_base = uip_buf;
5247 + iov[0].iov_len = 40 + UIP_LLH_LEN;
5248 + iov[1].iov_base = (char *)uip_appdata;
5249 + iov[1].iov_len = uip_len - (40 + UIP_LLH_LEN);
5250 +
5251 + ret = writev(fd, iov, 2);
5252 + }
5253 +#endif
5254 + dump_mem(1, ret);
5255 +
5256 + if(ret == -1) {
5257 + perror("tap_dev: tapdev_send: writev");
5258 + exit(1);
5259 + }
5260 +}
5261 +/*-----------------------------------------------------------------------------------*/
5262 --- /dev/null
5263 +++ b/net/uip-0.9/tapdev.h
5264 @@ -0,0 +1,42 @@
5265 +/*
5266 + * Copyright (c) 2001, Adam Dunkels.
5267 + * All rights reserved.
5268 + *
5269 + * Redistribution and use in source and binary forms, with or without
5270 + * modification, are permitted provided that the following conditions
5271 + * are met:
5272 + * 1. Redistributions of source code must retain the above copyright
5273 + * notice, this list of conditions and the following disclaimer.
5274 + * 2. Redistributions in binary form must reproduce the above copyright
5275 + * notice, this list of conditions and the following disclaimer in the
5276 + * documentation and/or other materials provided with the distribution.
5277 + * 3. The name of the author may not be used to endorse or promote
5278 + * products derived from this software without specific prior
5279 + * written permission.
5280 + *
5281 + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
5282 + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
5283 + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
5284 + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
5285 + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
5286 + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
5287 + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
5288 + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
5289 + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
5290 + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
5291 + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
5292 + *
5293 + * This file is part of the uIP TCP/IP stack.
5294 + *
5295 + * $Id: tapdev.h,v 1.1.2.1 2003/10/04 22:54:17 adam Exp $
5296 + *
5297 + */
5298 +
5299 +#ifndef __TAPDEV_H__
5300 +#define __TAPDEV_H__
5301 +
5302 +void tapdev_init(void);
5303 +unsigned int tapdev_read(void);
5304 +void tapdev_send(void);
5305 +
5306 +#endif /* __TAPDEV_H__ */
5307 --- /dev/null
5308 +++ b/net/uip-0.9/uip.c
5309 @@ -0,0 +1,1503 @@
5310 +/**
5311 + * \addtogroup uip
5312 + * @{
5313 + */
5314 +
5315 +/**
5316 + * \file
5317 + * The uIP TCP/IP stack code.
5318 + * \author Adam Dunkels <adam@dunkels.com>
5319 + */
5320 +
5321 +/*
5322 + * Copyright (c) 2001-2003, Adam Dunkels.
5323 + * All rights reserved.
5324 + *
5325 + * Redistribution and use in source and binary forms, with or without
5326 + * modification, are permitted provided that the following conditions
5327 + * are met:
5328 + * 1. Redistributions of source code must retain the above copyright
5329 + * notice, this list of conditions and the following disclaimer.
5330 + * 2. Redistributions in binary form must reproduce the above copyright
5331 + * notice, this list of conditions and the following disclaimer in the
5332 + * documentation and/or other materials provided with the distribution.
5333 + * 3. The name of the author may not be used to endorse or promote
5334 + * products derived from this software without specific prior
5335 + * written permission.
5336 + *
5337 + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
5338 + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
5339 + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
5340 + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
5341 + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
5342 + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
5343 + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
5344 + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
5345 + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
5346 + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
5347 + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
5348 + *
5349 + * This file is part of the uIP TCP/IP stack.
5350 + *
5351 + * $Id: uip.c,v 1.62.2.10 2003/10/07 13:23:01 adam Exp $
5352 + *
5353 + */
5354 +
5355 +/*
5356 +This is a small implementation of the IP and TCP protocols (as well as
5357 +some basic ICMP stuff). The implementation couples the IP, TCP and the
5358 +application layers very tightly. To keep the size of the compiled code
5359 +down, this code also features heavy usage of the goto statement.
5360 +
5361 +The principle is that we have a small buffer, called the uip_buf, in
5362 +which the device driver puts an incoming packet. The TCP/IP stack
5363 +parses the headers in the packet, and calls upon the application. If
5364 +the remote host has sent data to the application, this data is present
5365 +in the uip_buf and the application read the data from there. It is up
5366 +to the application to put this data into a byte stream if needed. The
5367 +application will not be fed with data that is out of sequence.
5368 +
5369 +If the application whishes to send data to the peer, it should put its
5370 +data into the uip_buf, 40 bytes from the start of the buffer. The
5371 +TCP/IP stack will calculate the checksums, and fill in the necessary
5372 +header fields and finally send the packet back to the peer.
5373 +*/
5374 +
5375 +#include "uip.h"
5376 +#include "uipopt.h"
5377 +#include "uip_arch.h"
5378 +
5379 +/*-----------------------------------------------------------------------------------*/
5380 +/* Variable definitions. */
5381 +
5382 +
5383 +/* The IP address of this host. If it is defined to be fixed (by setting UIP_FIXEDADDR to 1 in uipopt.h), the address is set here. Otherwise, the address */
5384 +#if UIP_FIXEDADDR > 0
5385 +const unsigned short int uip_hostaddr[2] =
5386 + {HTONS((UIP_IPADDR0 << 8) | UIP_IPADDR1),
5387 + HTONS((UIP_IPADDR2 << 8) | UIP_IPADDR3)};
5388 +const unsigned short int uip_arp_draddr[2] =
5389 + {HTONS((UIP_DRIPADDR0 << 8) | UIP_DRIPADDR1),
5390 + HTONS((UIP_DRIPADDR2 << 8) | UIP_DRIPADDR3)};
5391 +const unsigned short int uip_arp_netmask[2] =
5392 + {HTONS((UIP_NETMASK0 << 8) | UIP_NETMASK1),
5393 + HTONS((UIP_NETMASK2 << 8) | UIP_NETMASK3)};
5394 +#else
5395 +unsigned short int uip_hostaddr[2];
5396 +unsigned short int uip_arp_draddr[2], uip_arp_netmask[2];
5397 +#endif /* UIP_FIXEDADDR */
5398 +
5399 +u8_t uip_buf[UIP_BUFSIZE+2]; /* The packet buffer that contains
5400 + incoming packets. */
5401 +volatile u8_t *uip_appdata; /* The uip_appdata pointer points to
5402 + application data. */
5403 +volatile u8_t *uip_sappdata; /* The uip_appdata pointer points to the
5404 + application data which is to be sent. */
5405 +#if UIP_URGDATA > 0
5406 +volatile u8_t *uip_urgdata; /* The uip_urgdata pointer points to
5407 + urgent data (out-of-band data), if
5408 + present. */
5409 +volatile u8_t uip_urglen, uip_surglen;
5410 +#endif /* UIP_URGDATA > 0 */
5411 +
5412 +volatile unsigned short int uip_len, uip_slen;
5413 + /* The uip_len is either 8 or 16 bits,
5414 + depending on the maximum packet
5415 + size. */
5416 +
5417 +volatile u8_t uip_flags; /* The uip_flags variable is used for
5418 + communication between the TCP/IP stack
5419 + and the application program. */
5420 +struct uip_conn *uip_conn; /* uip_conn always points to the current
5421 + connection. */
5422 +
5423 +struct uip_conn uip_conns[UIP_CONNS];
5424 + /* The uip_conns array holds all TCP
5425 + connections. */
5426 +unsigned short int uip_listenports[UIP_LISTENPORTS];
5427 + /* The uip_listenports list all currently
5428 + listning ports. */
5429 +#if UIP_UDP
5430 +struct uip_udp_conn *uip_udp_conn;
5431 +struct uip_udp_conn uip_udp_conns[UIP_UDP_CONNS];
5432 +#endif /* UIP_UDP */
5433 +
5434 +
5435 +static unsigned short int ipid; /* Ths ipid variable is an increasing
5436 + number that is used for the IP ID
5437 + field. */
5438 +
5439 +static u8_t iss[4]; /* The iss variable is used for the TCP
5440 + initial sequence number. */
5441 +
5442 +#if UIP_ACTIVE_OPEN
5443 +static unsigned short int lastport; /* Keeps track of the last port used for
5444 + a new connection. */
5445 +#endif /* UIP_ACTIVE_OPEN */
5446 +
5447 +/* Temporary variables. */
5448 +volatile u8_t uip_acc32[4];
5449 +static u8_t c, opt;
5450 +static unsigned short int tmp16;
5451 +
5452 +/* Structures and definitions. */
5453 +#define TCP_FIN 0x01
5454 +#define TCP_SYN 0x02
5455 +#define TCP_RST 0x04
5456 +#define TCP_PSH 0x08
5457 +#define TCP_ACK 0x10
5458 +#define TCP_URG 0x20
5459 +#define TCP_CTL 0x3f
5460 +
5461 +#define ICMP_ECHO_REPLY 0
5462 +#define ICMP_ECHO 8
5463 +
5464 +/* Macros. */
5465 +#define BUF ((uip_tcpip_hdr *)&uip_buf[UIP_LLH_LEN])
5466 +#define FBUF ((uip_tcpip_hdr *)&uip_reassbuf[0])
5467 +#define ICMPBUF ((uip_icmpip_hdr *)&uip_buf[UIP_LLH_LEN])
5468 +#define UDPBUF ((uip_udpip_hdr *)&uip_buf[UIP_LLH_LEN])
5469 +
5470 +#if UIP_STATISTICS == 1
5471 +struct uip_stats uip_stat;
5472 +#define UIP_STAT(s) s
5473 +#else
5474 +#define UIP_STAT(s)
5475 +#endif /* UIP_STATISTICS == 1 */
5476 +
5477 +#if UIP_LOGGING == 1
5478 +extern void puts(const char *s);
5479 +#define UIP_LOG(m) puts(m)
5480 +#else
5481 +#define UIP_LOG(m)
5482 +#endif /* UIP_LOGGING == 1 */
5483 +
5484 +/*-----------------------------------------------------------------------------------*/
5485 +void
5486 +uip_init(void)
5487 +{
5488 + for(c = 0; c < UIP_LISTENPORTS; ++c) {
5489 + uip_listenports[c] = 0;
5490 + }
5491 + for(c = 0; c < UIP_CONNS; ++c) {
5492 + uip_conns[c].tcpstateflags = CLOSED;
5493 + }
5494 +#if UIP_ACTIVE_OPEN
5495 + lastport = 1024;
5496 +#endif /* UIP_ACTIVE_OPEN */
5497 +
5498 +#if UIP_UDP
5499 + for(c = 0; c < UIP_UDP_CONNS; ++c) {
5500 + uip_udp_conns[c].lport = 0;
5501 + }
5502 +#endif /* UIP_UDP */
5503 +
5504 +
5505 + /* IPv4 initialization. */
5506 +#if UIP_FIXEDADDR == 0
5507 + uip_hostaddr[0] = uip_hostaddr[1] = 0;
5508 +#endif /* UIP_FIXEDADDR */
5509 +
5510 +}
5511 +/*-----------------------------------------------------------------------------------*/
5512 +#if UIP_ACTIVE_OPEN
5513 +struct uip_conn *
5514 +uip_connect(unsigned short int *ripaddr, unsigned short int rport)
5515 +{
5516 + register struct uip_conn *conn, *cconn;
5517 +
5518 + /* Find an unused local port. */
5519 + again:
5520 + ++lastport;
5521 +
5522 + if(lastport >= 32000) {
5523 + lastport = 4096;
5524 + }
5525 +
5526 + /* Check if this port is already in use, and if so try to find
5527 + another one. */
5528 + for(c = 0; c < UIP_CONNS; ++c) {
5529 + conn = &uip_conns[c];
5530 + if(conn->tcpstateflags != CLOSED &&
5531 + conn->lport == htons(lastport)) {
5532 + goto again;
5533 + }
5534 + }
5535 +
5536 +
5537 + conn = 0;
5538 + for(c = 0; c < UIP_CONNS; ++c) {
5539 + cconn = &uip_conns[c];
5540 + if(cconn->tcpstateflags == CLOSED) {
5541 + conn = cconn;
5542 + break;
5543 + }
5544 + if(cconn->tcpstateflags == TIME_WAIT) {
5545 + if(conn == 0 ||
5546 + cconn->timer > uip_conn->timer) {
5547 + conn = cconn;
5548 + }
5549 + }
5550 + }
5551 +
5552 + if(conn == 0) {
5553 + return 0;
5554 + }
5555 +
5556 + conn->tcpstateflags = SYN_SENT;
5557 +
5558 + conn->snd_nxt[0] = iss[0];
5559 + conn->snd_nxt[1] = iss[1];
5560 + conn->snd_nxt[2] = iss[2];
5561 + conn->snd_nxt[3] = iss[3];
5562 +
5563 + conn->initialmss = conn->mss = UIP_TCP_MSS;
5564 +
5565 + conn->len = 1; /* TCP length of the SYN is one. */
5566 + conn->nrtx = 0;
5567 + conn->timer = 1; /* Send the SYN next time around. */
5568 + conn->rto = UIP_RTO;
5569 + conn->sa = 0;
5570 + conn->sv = 16;
5571 + conn->lport = htons(lastport);
5572 + conn->rport = rport;
5573 + conn->ripaddr[0] = ripaddr[0];
5574 + conn->ripaddr[1] = ripaddr[1];
5575 +
5576 + return conn;
5577 +}
5578 +#endif /* UIP_ACTIVE_OPEN */
5579 +/*-----------------------------------------------------------------------------------*/
5580 +#if UIP_UDP
5581 +struct uip_udp_conn *
5582 +uip_udp_new(unsigned short int *ripaddr, unsigned short int rport)
5583 +{
5584 + register struct uip_udp_conn *conn;
5585 +
5586 + /* Find an unused local port. */
5587 + again:
5588 + ++lastport;
5589 +
5590 + if(lastport >= 32000) {
5591 + lastport = 4096;
5592 + }
5593 +
5594 + for(c = 0; c < UIP_UDP_CONNS; ++c) {
5595 + if(uip_udp_conns[c].lport == lastport) {
5596 + goto again;
5597 + }
5598 + }
5599 +
5600 +
5601 + conn = 0;
5602 + for(c = 0; c < UIP_UDP_CONNS; ++c) {
5603 + if(uip_udp_conns[c].lport == 0) {
5604 + conn = &uip_udp_conns[c];
5605 + break;
5606 + }
5607 + }
5608 +
5609 + if(conn == 0) {
5610 + return 0;
5611 + }
5612 +
5613 + conn->lport = HTONS(lastport);
5614 + conn->rport = HTONS(rport);
5615 + conn->ripaddr[0] = ripaddr[0];
5616 + conn->ripaddr[1] = ripaddr[1];
5617 +
5618 + return conn;
5619 +}
5620 +#endif /* UIP_UDP */
5621 +/*-----------------------------------------------------------------------------------*/
5622 +void
5623 +uip_unlisten(unsigned short int port)
5624 +{
5625 + for(c = 0; c < UIP_LISTENPORTS; ++c) {
5626 + if(uip_listenports[c] == port) {
5627 + uip_listenports[c] = 0;
5628 + return;
5629 + }
5630 + }
5631 +}
5632 +/*-----------------------------------------------------------------------------------*/
5633 +void
5634 +uip_listen(unsigned short int port)
5635 +{
5636 + for(c = 0; c < UIP_LISTENPORTS; ++c) {
5637 + if(uip_listenports[c] == 0) {
5638 + uip_listenports[c] = port;
5639 + return;
5640 + }
5641 + }
5642 +}
5643 +/*-----------------------------------------------------------------------------------*/
5644 +/* XXX: IP fragment reassembly: not well-tested. */
5645 +
5646 +#if UIP_REASSEMBLY
5647 +#define UIP_REASS_BUFSIZE (UIP_BUFSIZE - UIP_LLH_LEN)
5648 +static u8_t uip_reassbuf[UIP_REASS_BUFSIZE];
5649 +static u8_t uip_reassbitmap[UIP_REASS_BUFSIZE / (8 * 8)];
5650 +static const u8_t bitmap_bits[8] = {0xff, 0x7f, 0x3f, 0x1f,
5651 + 0x0f, 0x07, 0x03, 0x01};
5652 +static unsigned short int uip_reasslen;
5653 +static u8_t uip_reassflags;
5654 +#define UIP_REASS_FLAG_LASTFRAG 0x01
5655 +static u8_t uip_reasstmr;
5656 +
5657 +#define IP_HLEN 20
5658 +#define IP_MF 0x20
5659 +
5660 +static u8_t
5661 +uip_reass(void)
5662 +{
5663 + unsigned short int offset, len;
5664 + unsigned short int i;
5665 +
5666 + /* If ip_reasstmr is zero, no packet is present in the buffer, so we
5667 + write the IP header of the fragment into the reassembly
5668 + buffer. The timer is updated with the maximum age. */
5669 + if(uip_reasstmr == 0) {
5670 + memcpy(uip_reassbuf, &BUF->vhl, IP_HLEN);
5671 + uip_reasstmr = UIP_REASS_MAXAGE;
5672 + uip_reassflags = 0;
5673 + /* Clear the bitmap. */
5674 + memset(uip_reassbitmap, sizeof(uip_reassbitmap), 0);
5675 + }
5676 +
5677 + /* Check if the incoming fragment matches the one currently present
5678 + in the reasembly buffer. If so, we proceed with copying the
5679 + fragment into the buffer. */
5680 + if(BUF->srcipaddr[0] == FBUF->srcipaddr[0] &&
5681 + BUF->srcipaddr[1] == FBUF->srcipaddr[1] &&
5682 + BUF->destipaddr[0] == FBUF->destipaddr[0] &&
5683 + BUF->destipaddr[1] == FBUF->destipaddr[1] &&
5684 + BUF->ipid[0] == FBUF->ipid[0] &&
5685 + BUF->ipid[1] == FBUF->ipid[1]) {
5686 +
5687 + len = (BUF->len[0] << 8) + BUF->len[1] - (BUF->vhl & 0x0f) * 4;
5688 + offset = (((BUF->ipoffset[0] & 0x3f) << 8) + BUF->ipoffset[1]) * 8;
5689 +
5690 + /* If the offset or the offset + fragment length overflows the
5691 + reassembly buffer, we discard the entire packet. */
5692 + if(offset > UIP_REASS_BUFSIZE ||
5693 + offset + len > UIP_REASS_BUFSIZE) {
5694 + uip_reasstmr = 0;
5695 + goto nullreturn;
5696 + }
5697 +
5698 + /* Copy the fragment into the reassembly buffer, at the right
5699 + offset. */
5700 + memcpy(&uip_reassbuf[IP_HLEN + offset],
5701 + (char *)BUF + (int)((BUF->vhl & 0x0f) * 4),
5702 + len);
5703 +
5704 + /* Update the bitmap. */
5705 + if(offset / (8 * 8) == (offset + len) / (8 * 8)) {
5706 + /* If the two endpoints are in the same byte, we only update
5707 + that byte. */
5708 +
5709 + uip_reassbitmap[offset / (8 * 8)] |=
5710 + bitmap_bits[(offset / 8 ) & 7] &
5711 + ~bitmap_bits[((offset + len) / 8 ) & 7];
5712 + } else {
5713 + /* If the two endpoints are in different bytes, we update the
5714 + bytes in the endpoints and fill the stuff inbetween with
5715 + 0xff. */
5716 + uip_reassbitmap[offset / (8 * 8)] |=
5717 + bitmap_bits[(offset / 8 ) & 7];
5718 + for(i = 1 + offset / (8 * 8); i < (offset + len) / (8 * 8); ++i) {
5719 + uip_reassbitmap[i] = 0xff;
5720 + }
5721 + uip_reassbitmap[(offset + len) / (8 * 8)] |=
5722 + ~bitmap_bits[((offset + len) / 8 ) & 7];
5723 + }
5724 +
5725 + /* If this fragment has the More Fragments flag set to zero, we
5726 + know that this is the last fragment, so we can calculate the
5727 + size of the entire packet. We also set the
5728 + IP_REASS_FLAG_LASTFRAG flag to indicate that we have received
5729 + the final fragment. */
5730 +
5731 + if((BUF->ipoffset[0] & IP_MF) == 0) {
5732 + uip_reassflags |= UIP_REASS_FLAG_LASTFRAG;
5733 + uip_reasslen = offset + len;
5734 + }
5735 +
5736 + /* Finally, we check if we have a full packet in the buffer. We do
5737 + this by checking if we have the last fragment and if all bits
5738 + in the bitmap are set. */
5739 + if(uip_reassflags & UIP_REASS_FLAG_LASTFRAG) {
5740 + /* Check all bytes up to and including all but the last byte in
5741 + the bitmap. */
5742 + for(i = 0; i < uip_reasslen / (8 * 8) - 1; ++i) {
5743 + if(uip_reassbitmap[i] != 0xff) {
5744 + goto nullreturn;
5745 + }
5746 + }
5747 + /* Check the last byte in the bitmap. It should contain just the
5748 + right amount of bits. */
5749 + if(uip_reassbitmap[uip_reasslen / (8 * 8)] !=
5750 + (u8_t)~bitmap_bits[uip_reasslen / 8 & 7]) {
5751 + goto nullreturn;
5752 + }
5753 +
5754 + /* If we have come this far, we have a full packet in the
5755 + buffer, so we allocate a pbuf and copy the packet into it. We
5756 + also reset the timer. */
5757 + uip_reasstmr = 0;
5758 + memcpy(BUF, FBUF, uip_reasslen);
5759 +
5760 + /* Pretend to be a "normal" (i.e., not fragmented) IP packet
5761 + from now on. */
5762 + BUF->ipoffset[0] = BUF->ipoffset[1] = 0;
5763 + BUF->len[0] = uip_reasslen >> 8;
5764 + BUF->len[1] = uip_reasslen & 0xff;
5765 + BUF->ipchksum = 0;
5766 + BUF->ipchksum = ~(uip_ipchksum());
5767 +
5768 + return uip_reasslen;
5769 + }
5770 + }
5771 +
5772 + nullreturn:
5773 + return 0;
5774 +}
5775 +#endif /* UIP_REASSEMBL */
5776 +/*-----------------------------------------------------------------------------------*/
5777 +static void
5778 +uip_add_rcv_nxt(unsigned short int n)
5779 +{
5780 + uip_add32(uip_conn->rcv_nxt, n);
5781 + uip_conn->rcv_nxt[0] = uip_acc32[0];
5782 + uip_conn->rcv_nxt[1] = uip_acc32[1];
5783 + uip_conn->rcv_nxt[2] = uip_acc32[2];
5784 + uip_conn->rcv_nxt[3] = uip_acc32[3];
5785 +}
5786 +/*-----------------------------------------------------------------------------------*/
5787 +void
5788 +uip_process(u8_t flag)
5789 +{
5790 + register struct uip_conn *uip_connr = uip_conn;
5791 +
5792 + uip_appdata = &uip_buf[40 + UIP_LLH_LEN];
5793 +
5794 +
5795 + /* Check if we were invoked because of the perodic timer fireing. */
5796 + if(flag == UIP_TIMER) {
5797 +#if UIP_REASSEMBLY
5798 + if(uip_reasstmr != 0) {
5799 + --uip_reasstmr;
5800 + }
5801 +#endif /* UIP_REASSEMBLY */
5802 + /* Increase the initial sequence number. */
5803 + if(++iss[3] == 0) {
5804 + if(++iss[2] == 0) {
5805 + if(++iss[1] == 0) {
5806 + ++iss[0];
5807 + }
5808 + }
5809 + }
5810 + uip_len = 0;
5811 + if(uip_connr->tcpstateflags == TIME_WAIT ||
5812 + uip_connr->tcpstateflags == FIN_WAIT_2) {
5813 + ++(uip_connr->timer);
5814 + if(uip_connr->timer == UIP_TIME_WAIT_TIMEOUT) {
5815 + uip_connr->tcpstateflags = CLOSED;
5816 + }
5817 + } else if(uip_connr->tcpstateflags != CLOSED) {
5818 + /* If the connection has outstanding data, we increase the
5819 + connection's timer and see if it has reached the RTO value
5820 + in which case we retransmit. */
5821 + if(uip_outstanding(uip_connr)) {
5822 + if(uip_connr->timer-- == 0) {
5823 + if(uip_connr->nrtx == UIP_MAXRTX ||
5824 + ((uip_connr->tcpstateflags == SYN_SENT ||
5825 + uip_connr->tcpstateflags == SYN_RCVD) &&
5826 + uip_connr->nrtx == UIP_MAXSYNRTX)) {
5827 + uip_connr->tcpstateflags = CLOSED;
5828 +
5829 + /* We call UIP_APPCALL() with uip_flags set to
5830 + UIP_TIMEDOUT to inform the application that the
5831 + connection has timed out. */
5832 + uip_flags = UIP_TIMEDOUT;
5833 + UIP_APPCALL();
5834 +
5835 + /* We also send a reset packet to the remote host. */
5836 + BUF->flags = TCP_RST | TCP_ACK;
5837 + goto tcp_send_nodata;
5838 + }
5839 +
5840 + /* Exponential backoff. */
5841 + uip_connr->timer = UIP_RTO << (uip_connr->nrtx > 4?
5842 + 4:
5843 + uip_connr->nrtx);
5844 + ++(uip_connr->nrtx);
5845 +
5846 + /* Ok, so we need to retransmit. We do this differently
5847 + depending on which state we are in. In ESTABLISHED, we
5848 + call upon the application so that it may prepare the
5849 + data for the retransmit. In SYN_RCVD, we resend the
5850 + SYNACK that we sent earlier and in LAST_ACK we have to
5851 + retransmit our FINACK. */
5852 + UIP_STAT(++uip_stat.tcp.rexmit);
5853 + switch(uip_connr->tcpstateflags & TS_MASK) {
5854 + case SYN_RCVD:
5855 + /* In the SYN_RCVD state, we should retransmit our
5856 + SYNACK. */
5857 + goto tcp_send_synack;
5858 +
5859 +#if UIP_ACTIVE_OPEN
5860 + case SYN_SENT:
5861 + /* In the SYN_SENT state, we retransmit out SYN. */
5862 + BUF->flags = 0;
5863 + goto tcp_send_syn;
5864 +#endif /* UIP_ACTIVE_OPEN */
5865 +
5866 + case ESTABLISHED:
5867 + /* In the ESTABLISHED state, we call upon the application
5868 + to do the actual retransmit after which we jump into
5869 + the code for sending out the packet (the apprexmit
5870 + label). */
5871 + uip_len = 0;
5872 + uip_slen = 0;
5873 + uip_flags = UIP_REXMIT;
5874 + UIP_APPCALL();
5875 + goto apprexmit;
5876 +
5877 + case FIN_WAIT_1:
5878 + case CLOSING:
5879 + case LAST_ACK:
5880 + /* In all these states we should retransmit a FINACK. */
5881 + goto tcp_send_finack;
5882 +
5883 + }
5884 + }
5885 + } else if((uip_connr->tcpstateflags & TS_MASK) == ESTABLISHED) {
5886 + /* If there was no need for a retransmission, we poll the
5887 + application for new data. */
5888 + uip_len = 0;
5889 + uip_slen = 0;
5890 + uip_flags = UIP_POLL;
5891 + UIP_APPCALL();
5892 + goto appsend;
5893 + }
5894 + }
5895 + goto drop;
5896 + }
5897 +#if UIP_UDP
5898 + if(flag == UIP_UDP_TIMER) {
5899 + if(uip_udp_conn->lport != 0) {
5900 + uip_appdata = &uip_buf[UIP_LLH_LEN + 28];
5901 + uip_len = uip_slen = 0;
5902 + uip_flags = UIP_POLL;
5903 + UIP_UDP_APPCALL();
5904 + goto udp_send;
5905 + } else {
5906 + goto drop;
5907 + }
5908 + }
5909 +#endif
5910 +
5911 + /* This is where the input processing starts. */
5912 + UIP_STAT(++uip_stat.ip.recv);
5913 +
5914 +
5915 + /* Start of IPv4 input header processing code. */
5916 +
5917 + /* Check validity of the IP header. */
5918 + if(BUF->vhl != 0x45) { /* IP version and header length. */
5919 + UIP_STAT(++uip_stat.ip.drop);
5920 + UIP_STAT(++uip_stat.ip.vhlerr);
5921 + UIP_LOG("ip: invalid version or header length.");
5922 + goto drop;
5923 + }
5924 +
5925 + /* Check the size of the packet. If the size reported to us in
5926 + uip_len doesn't match the size reported in the IP header, there
5927 + has been a transmission error and we drop the packet. */
5928 +
5929 + if(BUF->len[0] != (uip_len >> 8)) { /* IP length, high byte. */
5930 + uip_len = (uip_len & 0xff) | (BUF->len[0] << 8);
5931 + }
5932 + if(BUF->len[1] != (uip_len & 0xff)) { /* IP length, low byte. */
5933 + uip_len = (uip_len & 0xff00) | BUF->len[1];
5934 + }
5935 +
5936 + /* Check the fragment flag. */
5937 + if((BUF->ipoffset[0] & 0x3f) != 0 ||
5938 + BUF->ipoffset[1] != 0) {
5939 +#if UIP_REASSEMBLY
5940 + uip_len = uip_reass();
5941 + if(uip_len == 0) {
5942 + goto drop;
5943 + }
5944 +#else
5945 + UIP_STAT(++uip_stat.ip.drop);
5946 + UIP_STAT(++uip_stat.ip.fragerr);
5947 + UIP_LOG("ip: fragment dropped.");
5948 + goto drop;
5949 +#endif /* UIP_REASSEMBLY */
5950 + }
5951 +
5952 + /* If we are configured to use ping IP address configuration and
5953 + hasn't been assigned an IP address yet, we accept all ICMP
5954 + packets. */
5955 +#if UIP_PINGADDRCONF
5956 + if((uip_hostaddr[0] | uip_hostaddr[1]) == 0) {
5957 + if(BUF->proto == UIP_PROTO_ICMP) {
5958 + UIP_LOG("ip: possible ping config packet received.");
5959 + goto icmp_input;
5960 + } else {
5961 + UIP_LOG("ip: packet dropped since no address assigned.");
5962 + goto drop;
5963 + }
5964 + }
5965 +#endif /* UIP_PINGADDRCONF */
5966 +
5967 + /* Check if the packet is destined for our IP address. */
5968 + if(BUF->destipaddr[0] != uip_hostaddr[0]) {
5969 + UIP_STAT(++uip_stat.ip.drop);
5970 + UIP_LOG("ip: packet not for us.");
5971 + goto drop;
5972 + }
5973 + if(BUF->destipaddr[1] != uip_hostaddr[1]) {
5974 + UIP_STAT(++uip_stat.ip.drop);
5975 + UIP_LOG("ip: packet not for us.");
5976 + goto drop;
5977 + }
5978 +
5979 + if(uip_ipchksum() != 0xffff) { /* Compute and check the IP header
5980 + checksum. */
5981 + UIP_STAT(++uip_stat.ip.drop);
5982 + UIP_STAT(++uip_stat.ip.chkerr);
5983 + UIP_LOG("ip: bad checksum.");
5984 + goto drop;
5985 + }
5986 +
5987 + if(BUF->proto == UIP_PROTO_TCP) /* Check for TCP packet. If so, jump
5988 + to the tcp_input label. */
5989 + goto tcp_input;
5990 +
5991 +#if UIP_UDP
5992 + if(BUF->proto == UIP_PROTO_UDP)
5993 + goto udp_input;
5994 +#endif /* UIP_UDP */
5995 +
5996 + if(BUF->proto != UIP_PROTO_ICMP) { /* We only allow ICMP packets from
5997 + here. */
5998 + UIP_STAT(++uip_stat.ip.drop);
5999 + UIP_STAT(++uip_stat.ip.protoerr);
6000 + UIP_LOG("ip: neither tcp nor icmp.");
6001 + goto drop;
6002 + }
6003 +
6004 + //icmp_input:
6005 + UIP_STAT(++uip_stat.icmp.recv);
6006 +
6007 + /* ICMP echo (i.e., ping) processing. This is simple, we only change
6008 + the ICMP type from ECHO to ECHO_REPLY and adjust the ICMP
6009 + checksum before we return the packet. */
6010 + if(ICMPBUF->type != ICMP_ECHO) {
6011 + UIP_STAT(++uip_stat.icmp.drop);
6012 + UIP_STAT(++uip_stat.icmp.typeerr);
6013 + UIP_LOG("icmp: not icmp echo.");
6014 + goto drop;
6015 + }
6016 +
6017 + /* If we are configured to use ping IP address assignment, we use
6018 + the destination IP address of this ping packet and assign it to
6019 + ourself. */
6020 +#if UIP_PINGADDRCONF
6021 + if((uip_hostaddr[0] | uip_hostaddr[1]) == 0) {
6022 + uip_hostaddr[0] = BUF->destipaddr[0];
6023 + uip_hostaddr[1] = BUF->destipaddr[1];
6024 + }
6025 +#endif /* UIP_PINGADDRCONF */
6026 +
6027 + ICMPBUF->type = ICMP_ECHO_REPLY;
6028 +
6029 + if(ICMPBUF->icmpchksum >= HTONS(0xffff - (ICMP_ECHO << 8))) {
6030 + ICMPBUF->icmpchksum += HTONS(ICMP_ECHO << 8) + 1;
6031 + } else {
6032 + ICMPBUF->icmpchksum += HTONS(ICMP_ECHO << 8);
6033 + }
6034 +
6035 + /* Swap IP addresses. */
6036 + tmp16 = BUF->destipaddr[0];
6037 + BUF->destipaddr[0] = BUF->srcipaddr[0];
6038 + BUF->srcipaddr[0] = tmp16;
6039 + tmp16 = BUF->destipaddr[1];
6040 + BUF->destipaddr[1] = BUF->srcipaddr[1];
6041 + BUF->srcipaddr[1] = tmp16;
6042 +
6043 + UIP_STAT(++uip_stat.icmp.sent);
6044 + goto send;
6045 +
6046 + /* End of IPv4 input header processing code. */
6047 +
6048 +
6049 +#if UIP_UDP
6050 + /* UDP input processing. */
6051 + udp_input:
6052 + /* UDP processing is really just a hack. We don't do anything to the
6053 + UDP/IP headers, but let the UDP application do all the hard
6054 + work. If the application sets uip_slen, it has a packet to
6055 + send. */
6056 +#if UIP_UDP_CHECKSUMS
6057 + if(uip_udpchksum() != 0xffff) {
6058 + UIP_STAT(++uip_stat.udp.drop);
6059 + UIP_STAT(++uip_stat.udp.chkerr);
6060 + UIP_LOG("udp: bad checksum.");
6061 + goto drop;
6062 + }
6063 +#endif /* UIP_UDP_CHECKSUMS */
6064 +
6065 + /* Demultiplex this UDP packet between the UDP "connections". */
6066 + for(uip_udp_conn = &uip_udp_conns[0];
6067 + uip_udp_conn < &uip_udp_conns[UIP_UDP_CONNS];
6068 + ++uip_udp_conn) {
6069 + if(uip_udp_conn->lport != 0 &&
6070 + UDPBUF->destport == uip_udp_conn->lport &&
6071 + (uip_udp_conn->rport == 0 ||
6072 + UDPBUF->srcport == uip_udp_conn->rport) &&
6073 + BUF->srcipaddr[0] == uip_udp_conn->ripaddr[0] &&
6074 + BUF->srcipaddr[1] == uip_udp_conn->ripaddr[1]) {
6075 + goto udp_found;
6076 + }
6077 + }
6078 + goto drop;
6079 +
6080 + udp_found:
6081 + uip_len = uip_len - 28;
6082 + uip_appdata = &uip_buf[UIP_LLH_LEN + 28];
6083 + uip_flags = UIP_NEWDATA;
6084 + uip_slen = 0;
6085 + UIP_UDP_APPCALL();
6086 + udp_send:
6087 + if(uip_slen == 0) {
6088 + goto drop;
6089 + }
6090 + uip_len = uip_slen + 28;
6091 +
6092 + BUF->len[0] = (uip_len >> 8);
6093 + BUF->len[1] = (uip_len & 0xff);
6094 +
6095 + BUF->proto = UIP_PROTO_UDP;
6096 +
6097 + UDPBUF->udplen = HTONS(uip_slen + 8);
6098 + UDPBUF->udpchksum = 0;
6099 +#if UIP_UDP_CHECKSUMS
6100 + /* Calculate UDP checksum. */
6101 + UDPBUF->udpchksum = ~(uip_udpchksum());
6102 + if(UDPBUF->udpchksum == 0) {
6103 + UDPBUF->udpchksum = 0xffff;
6104 + }
6105 +#endif /* UIP_UDP_CHECKSUMS */
6106 +
6107 + BUF->srcport = uip_udp_conn->lport;
6108 + BUF->destport = uip_udp_conn->rport;
6109 +
6110 + BUF->srcipaddr[0] = uip_hostaddr[0];
6111 + BUF->srcipaddr[1] = uip_hostaddr[1];
6112 + BUF->destipaddr[0] = uip_udp_conn->ripaddr[0];
6113 + BUF->destipaddr[1] = uip_udp_conn->ripaddr[1];
6114 +
6115 + uip_appdata = &uip_buf[UIP_LLH_LEN + 40];
6116 + goto ip_send_nolen;
6117 +#endif /* UIP_UDP */
6118 +
6119 + /* TCP input processing. */
6120 + tcp_input:
6121 + UIP_STAT(++uip_stat.tcp.recv);
6122 +
6123 + /* Start of TCP input header processing code. */
6124 +
6125 + if(uip_tcpchksum() != 0xffff) { /* Compute and check the TCP
6126 + checksum. */
6127 + UIP_STAT(++uip_stat.tcp.drop);
6128 + UIP_STAT(++uip_stat.tcp.chkerr);
6129 + UIP_LOG("tcp: bad checksum.");
6130 + goto drop;
6131 + }
6132 +
6133 + /* Demultiplex this segment. */
6134 + /* First check any active connections. */
6135 + for(uip_connr = &uip_conns[0]; uip_connr < &uip_conns[UIP_CONNS]; ++uip_connr) {
6136 + if(uip_connr->tcpstateflags != CLOSED &&
6137 + BUF->destport == uip_connr->lport &&
6138 + BUF->srcport == uip_connr->rport &&
6139 + BUF->srcipaddr[0] == uip_connr->ripaddr[0] &&
6140 + BUF->srcipaddr[1] == uip_connr->ripaddr[1]) {
6141 + goto found;
6142 + }
6143 + }
6144 +
6145 + /* If we didn't find and active connection that expected the packet,
6146 + either this packet is an old duplicate, or this is a SYN packet
6147 + destined for a connection in LISTEN. If the SYN flag isn't set,
6148 + it is an old packet and we send a RST. */
6149 + if((BUF->flags & TCP_CTL) != TCP_SYN)
6150 + goto reset;
6151 +
6152 + tmp16 = BUF->destport;
6153 + /* Next, check listening connections. */
6154 + for(c = 0; c < UIP_LISTENPORTS; ++c) {
6155 + if(tmp16 == uip_listenports[c])
6156 + goto found_listen;
6157 + }
6158 +
6159 + /* No matching connection found, so we send a RST packet. */
6160 + UIP_STAT(++uip_stat.tcp.synrst);
6161 + reset:
6162 +
6163 + /* We do not send resets in response to resets. */
6164 + if(BUF->flags & TCP_RST)
6165 + goto drop;
6166 +
6167 + UIP_STAT(++uip_stat.tcp.rst);
6168 +
6169 + BUF->flags = TCP_RST | TCP_ACK;
6170 + uip_len = 40;
6171 + BUF->tcpoffset = 5 << 4;
6172 +
6173 + /* Flip the seqno and ackno fields in the TCP header. */
6174 + c = BUF->seqno[3];
6175 + BUF->seqno[3] = BUF->ackno[3];
6176 + BUF->ackno[3] = c;
6177 +
6178 + c = BUF->seqno[2];
6179 + BUF->seqno[2] = BUF->ackno[2];
6180 + BUF->ackno[2] = c;
6181 +
6182 + c = BUF->seqno[1];
6183 + BUF->seqno[1] = BUF->ackno[1];
6184 + BUF->ackno[1] = c;
6185 +
6186 + c = BUF->seqno[0];
6187 + BUF->seqno[0] = BUF->ackno[0];
6188 + BUF->ackno[0] = c;
6189 +
6190 + /* We also have to increase the sequence number we are
6191 + acknowledging. If the least significant byte overflowed, we need
6192 + to propagate the carry to the other bytes as well. */
6193 + if(++BUF->ackno[3] == 0) {
6194 + if(++BUF->ackno[2] == 0) {
6195 + if(++BUF->ackno[1] == 0) {
6196 + ++BUF->ackno[0];
6197 + }
6198 + }
6199 + }
6200 +
6201 + /* Swap port numbers. */
6202 + tmp16 = BUF->srcport;
6203 + BUF->srcport = BUF->destport;
6204 + BUF->destport = tmp16;
6205 +
6206 + /* Swap IP addresses. */
6207 + tmp16 = BUF->destipaddr[0];
6208 + BUF->destipaddr[0] = BUF->srcipaddr[0];
6209 + BUF->srcipaddr[0] = tmp16;
6210 + tmp16 = BUF->destipaddr[1];
6211 + BUF->destipaddr[1] = BUF->srcipaddr[1];
6212 + BUF->srcipaddr[1] = tmp16;
6213 +
6214 +
6215 + /* And send out the RST packet! */
6216 + goto tcp_send_noconn;
6217 +
6218 + /* This label will be jumped to if we matched the incoming packet
6219 + with a connection in LISTEN. In that case, we should create a new
6220 + connection and send a SYNACK in return. */
6221 + found_listen:
6222 + /* First we check if there are any connections avaliable. Unused
6223 + connections are kept in the same table as used connections, but
6224 + unused ones have the tcpstate set to CLOSED. Also, connections in
6225 + TIME_WAIT are kept track of and we'll use the oldest one if no
6226 + CLOSED connections are found. Thanks to Eddie C. Dost for a very
6227 + nice algorithm for the TIME_WAIT search. */
6228 + uip_connr = 0;
6229 + for(c = 0; c < UIP_CONNS; ++c) {
6230 + if(uip_conns[c].tcpstateflags == CLOSED) {
6231 + uip_connr = &uip_conns[c];
6232 + break;
6233 + }
6234 + if(uip_conns[c].tcpstateflags == TIME_WAIT) {
6235 + if(uip_connr == 0 ||
6236 + uip_conns[c].timer > uip_connr->timer) {
6237 + uip_connr = &uip_conns[c];
6238 + }
6239 + }
6240 + }
6241 +
6242 + if(uip_connr == 0) {
6243 + /* All connections are used already, we drop packet and hope that
6244 + the remote end will retransmit the packet at a time when we
6245 + have more spare connections. */
6246 + UIP_STAT(++uip_stat.tcp.syndrop);
6247 + UIP_LOG("tcp: found no unused connections.");
6248 + goto drop;
6249 + }
6250 + uip_conn = uip_connr;
6251 +
6252 + /* Fill in the necessary fields for the new connection. */
6253 + uip_connr->rto = uip_connr->timer = UIP_RTO;
6254 + uip_connr->sa = 0;
6255 + uip_connr->sv = 4;
6256 + uip_connr->nrtx = 0;
6257 + uip_connr->lport = BUF->destport;
6258 + uip_connr->rport = BUF->srcport;
6259 + uip_connr->ripaddr[0] = BUF->srcipaddr[0];
6260 + uip_connr->ripaddr[1] = BUF->srcipaddr[1];
6261 + uip_connr->tcpstateflags = SYN_RCVD;
6262 +
6263 + uip_connr->snd_nxt[0] = iss[0];
6264 + uip_connr->snd_nxt[1] = iss[1];
6265 + uip_connr->snd_nxt[2] = iss[2];
6266 + uip_connr->snd_nxt[3] = iss[3];
6267 + uip_connr->len = 1;
6268 +
6269 + /* rcv_nxt should be the seqno from the incoming packet + 1. */
6270 + uip_connr->rcv_nxt[3] = BUF->seqno[3];
6271 + uip_connr->rcv_nxt[2] = BUF->seqno[2];
6272 + uip_connr->rcv_nxt[1] = BUF->seqno[1];
6273 + uip_connr->rcv_nxt[0] = BUF->seqno[0];
6274 + uip_add_rcv_nxt(1);
6275 +
6276 + /* Parse the TCP MSS option, if present. */
6277 + if((BUF->tcpoffset & 0xf0) > 0x50) {
6278 + for(c = 0; c < ((BUF->tcpoffset >> 4) - 5) << 2 ;) {
6279 + opt = uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + c];
6280 + if(opt == 0x00) {
6281 + /* End of options. */
6282 + break;
6283 + } else if(opt == 0x01) {
6284 + ++c;
6285 + /* NOP option. */
6286 + } else if(opt == 0x02 &&
6287 + uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 1 + c] == 0x04) {
6288 + /* An MSS option with the right option length. */
6289 + tmp16 = ((unsigned short int)uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 2 + c] << 8) |
6290 + (unsigned short int)uip_buf[40 + UIP_LLH_LEN + 3 + c];
6291 + uip_connr->initialmss = uip_connr->mss =
6292 + tmp16 > UIP_TCP_MSS? UIP_TCP_MSS: tmp16;
6293 +
6294 + /* And we are done processing options. */
6295 + break;
6296 + } else {
6297 + /* All other options have a length field, so that we easily
6298 + can skip past them. */
6299 + if(uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 1 + c] == 0) {
6300 + /* If the length field is zero, the options are malformed
6301 + and we don't process them further. */
6302 + break;
6303 + }
6304 + c += uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 1 + c];
6305 + }
6306 + }
6307 + }
6308 +
6309 + /* Our response will be a SYNACK. */
6310 +#if UIP_ACTIVE_OPEN
6311 + tcp_send_synack:
6312 + BUF->flags = TCP_ACK;
6313 +
6314 + tcp_send_syn:
6315 + BUF->flags |= TCP_SYN;
6316 +#else /* UIP_ACTIVE_OPEN */
6317 + tcp_send_synack:
6318 + BUF->flags = TCP_SYN | TCP_ACK;
6319 +#endif /* UIP_ACTIVE_OPEN */
6320 +
6321 + /* We send out the TCP Maximum Segment Size option with our
6322 + SYNACK. */
6323 + BUF->optdata[0] = 2;
6324 + BUF->optdata[1] = 4;
6325 + BUF->optdata[2] = (UIP_TCP_MSS) / 256;
6326 + BUF->optdata[3] = (UIP_TCP_MSS) & 255;
6327 + uip_len = 44;
6328 + BUF->tcpoffset = 6 << 4;
6329 + goto tcp_send;
6330 +
6331 + /* This label will be jumped to if we found an active connection. */
6332 + found:
6333 + uip_conn = uip_connr;
6334 + uip_flags = 0;
6335 +
6336 + /* We do a very naive form of TCP reset processing; we just accept
6337 + any RST and kill our connection. We should in fact check if the
6338 + sequence number of this reset is wihtin our advertised window
6339 + before we accept the reset. */
6340 + if(BUF->flags & TCP_RST) {
6341 + uip_connr->tcpstateflags = CLOSED;
6342 + UIP_LOG("tcp: got reset, aborting connection.");
6343 + uip_flags = UIP_ABORT;
6344 + UIP_APPCALL();
6345 + goto drop;
6346 + }
6347 + /* Calculated the length of the data, if the application has sent
6348 + any data to us. */
6349 + c = (BUF->tcpoffset >> 4) << 2;
6350 + /* uip_len will contain the length of the actual TCP data. This is
6351 + calculated by subtracing the length of the TCP header (in
6352 + c) and the length of the IP header (20 bytes). */
6353 + uip_len = uip_len - c - 20;
6354 +
6355 + /* First, check if the sequence number of the incoming packet is
6356 + what we're expecting next. If not, we send out an ACK with the
6357 + correct numbers in. */
6358 + if(uip_len > 0 &&
6359 + (BUF->seqno[0] != uip_connr->rcv_nxt[0] ||
6360 + BUF->seqno[1] != uip_connr->rcv_nxt[1] ||
6361 + BUF->seqno[2] != uip_connr->rcv_nxt[2] ||
6362 + BUF->seqno[3] != uip_connr->rcv_nxt[3])) {
6363 + goto tcp_send_ack;
6364 + }
6365 +
6366 + /* Next, check if the incoming segment acknowledges any outstanding
6367 + data. If so, we update the sequence number, reset the length of
6368 + the outstanding data, calculate RTT estimations, and reset the
6369 + retransmission timer. */
6370 + if((BUF->flags & TCP_ACK) && uip_outstanding(uip_connr)) {
6371 + uip_add32(uip_connr->snd_nxt, uip_connr->len);
6372 + if(BUF->ackno[0] == uip_acc32[0] &&
6373 + BUF->ackno[1] == uip_acc32[1] &&
6374 + BUF->ackno[2] == uip_acc32[2] &&
6375 + BUF->ackno[3] == uip_acc32[3]) {
6376 + /* Update sequence number. */
6377 + uip_connr->snd_nxt[0] = uip_acc32[0];
6378 + uip_connr->snd_nxt[1] = uip_acc32[1];
6379 + uip_connr->snd_nxt[2] = uip_acc32[2];
6380 + uip_connr->snd_nxt[3] = uip_acc32[3];
6381 +
6382 +
6383 + /* Do RTT estimation, unless we have done retransmissions. */
6384 + if(uip_connr->nrtx == 0) {
6385 + signed char m;
6386 + m = uip_connr->rto - uip_connr->timer;
6387 + /* This is taken directly from VJs original code in his paper */
6388 + m = m - (uip_connr->sa >> 3);
6389 + uip_connr->sa += m;
6390 + if(m < 0) {
6391 + m = -m;
6392 + }
6393 + m = m - (uip_connr->sv >> 2);
6394 + uip_connr->sv += m;
6395 + uip_connr->rto = (uip_connr->sa >> 3) + uip_connr->sv;
6396 +
6397 + }
6398 + /* Set the acknowledged flag. */
6399 + uip_flags = UIP_ACKDATA;
6400 + /* Reset the retransmission timer. */
6401 + uip_connr->timer = uip_connr->rto;
6402 + }
6403 +
6404 + }
6405 +
6406 + /* Do different things depending on in what state the connection is. */
6407 + switch(uip_connr->tcpstateflags & TS_MASK) {
6408 + /* CLOSED and LISTEN are not handled here. CLOSE_WAIT is not
6409 + implemented, since we force the application to close when the
6410 + peer sends a FIN (hence the application goes directly from
6411 + ESTABLISHED to LAST_ACK). */
6412 + case SYN_RCVD:
6413 + /* In SYN_RCVD we have sent out a SYNACK in response to a SYN, and
6414 + we are waiting for an ACK that acknowledges the data we sent
6415 + out the last time. Therefore, we want to have the UIP_ACKDATA
6416 + flag set. If so, we enter the ESTABLISHED state. */
6417 + if(uip_flags & UIP_ACKDATA) {
6418 + uip_connr->tcpstateflags = ESTABLISHED;
6419 + uip_flags = UIP_CONNECTED;
6420 + uip_connr->len = 0;
6421 + if(uip_len > 0) {
6422 + uip_flags |= UIP_NEWDATA;
6423 + uip_add_rcv_nxt(uip_len);
6424 + }
6425 + uip_slen = 0;
6426 + UIP_APPCALL();
6427 + goto appsend;
6428 + }
6429 + goto drop;
6430 +#if UIP_ACTIVE_OPEN
6431 + case SYN_SENT:
6432 + /* In SYN_SENT, we wait for a SYNACK that is sent in response to
6433 + our SYN. The rcv_nxt is set to sequence number in the SYNACK
6434 + plus one, and we send an ACK. We move into the ESTABLISHED
6435 + state. */
6436 + if((uip_flags & UIP_ACKDATA) &&
6437 + BUF->flags == (TCP_SYN | TCP_ACK)) {
6438 +
6439 + /* Parse the TCP MSS option, if present. */
6440 + if((BUF->tcpoffset & 0xf0) > 0x50) {
6441 + for(c = 0; c < ((BUF->tcpoffset >> 4) - 5) << 2 ;) {
6442 + opt = uip_buf[40 + UIP_LLH_LEN + c];
6443 + if(opt == 0x00) {
6444 + /* End of options. */
6445 + break;
6446 + } else if(opt == 0x01) {
6447 + ++c;
6448 + /* NOP option. */
6449 + } else if(opt == 0x02 &&
6450 + uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 1 + c] == 0x04) {
6451 + /* An MSS option with the right option length. */
6452 + tmp16 = (uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 2 + c] << 8) |
6453 + uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 3 + c];
6454 + uip_connr->initialmss =
6455 + uip_connr->mss = tmp16 > UIP_TCP_MSS? UIP_TCP_MSS: tmp16;
6456 +
6457 + /* And we are done processing options. */
6458 + break;
6459 + } else {
6460 + /* All other options have a length field, so that we easily
6461 + can skip past them. */
6462 + if(uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 1 + c] == 0) {
6463 + /* If the length field is zero, the options are malformed
6464 + and we don't process them further. */
6465 + break;
6466 + }
6467 + c += uip_buf[UIP_TCPIP_HLEN + UIP_LLH_LEN + 1 + c];
6468 + }
6469 + }
6470 + }
6471 + uip_connr->tcpstateflags = ESTABLISHED;
6472 + uip_connr->rcv_nxt[0] = BUF->seqno[0];
6473 + uip_connr->rcv_nxt[1] = BUF->seqno[1];
6474 + uip_connr->rcv_nxt[2] = BUF->seqno[2];
6475 + uip_connr->rcv_nxt[3] = BUF->seqno[3];
6476 + uip_add_rcv_nxt(1);
6477 + uip_flags = UIP_CONNECTED | UIP_NEWDATA;
6478 + uip_connr->len = 0;
6479 + uip_len = 0;
6480 + uip_slen = 0;
6481 + UIP_APPCALL();
6482 + goto appsend;
6483 + }
6484 + goto reset;
6485 +#endif /* UIP_ACTIVE_OPEN */
6486 +
6487 + case ESTABLISHED:
6488 + /* In the ESTABLISHED state, we call upon the application to feed
6489 + data into the uip_buf. If the UIP_ACKDATA flag is set, the
6490 + application should put new data into the buffer, otherwise we are
6491 + retransmitting an old segment, and the application should put that
6492 + data into the buffer.
6493 +
6494 + If the incoming packet is a FIN, we should close the connection on
6495 + this side as well, and we send out a FIN and enter the LAST_ACK
6496 + state. We require that there is no outstanding data; otherwise the
6497 + sequence numbers will be screwed up. */
6498 +
6499 + if(BUF->flags & TCP_FIN) {
6500 + if(uip_outstanding(uip_connr)) {
6501 + goto drop;
6502 + }
6503 + uip_add_rcv_nxt(1 + uip_len);
6504 + uip_flags = UIP_CLOSE;
6505 + if(uip_len > 0) {
6506 + uip_flags |= UIP_NEWDATA;
6507 + }
6508 + UIP_APPCALL();
6509 + uip_connr->len = 1;
6510 + uip_connr->tcpstateflags = LAST_ACK;
6511 + uip_connr->nrtx = 0;
6512 + tcp_send_finack:
6513 + BUF->flags = TCP_FIN | TCP_ACK;
6514 + goto tcp_send_nodata;
6515 + }
6516 +
6517 + /* Check the URG flag. If this is set, the segment carries urgent
6518 + data that we must pass to the application. */
6519 + if(BUF->flags & TCP_URG) {
6520 +#if UIP_URGDATA > 0
6521 + uip_urglen = (BUF->urgp[0] << 8) | BUF->urgp[1];
6522 + if(uip_urglen > uip_len) {
6523 + /* There is more urgent data in the next segment to come. */
6524 + uip_urglen = uip_len;
6525 + }
6526 + uip_add_rcv_nxt(uip_urglen);
6527 + uip_len -= uip_urglen;
6528 + uip_urgdata = uip_appdata;
6529 + uip_appdata += uip_urglen;
6530 + } else {
6531 + uip_urglen = 0;
6532 +#endif /* UIP_URGDATA > 0 */
6533 + uip_appdata += (BUF->urgp[0] << 8) | BUF->urgp[1];
6534 + uip_len -= (BUF->urgp[0] << 8) | BUF->urgp[1];
6535 + }
6536 +
6537 +
6538 + /* If uip_len > 0 we have TCP data in the packet, and we flag this
6539 + by setting the UIP_NEWDATA flag and update the sequence number
6540 + we acknowledge. If the application has stopped the dataflow
6541 + using uip_stop(), we must not accept any data packets from the
6542 + remote host. */
6543 + if(uip_len > 0 && !(uip_connr->tcpstateflags & UIP_STOPPED)) {
6544 + uip_flags |= UIP_NEWDATA;
6545 + uip_add_rcv_nxt(uip_len);
6546 + }
6547 +
6548 + /* Check if the available buffer space advertised by the other end
6549 + is smaller than the initial MSS for this connection. If so, we
6550 + set the current MSS to the window size to ensure that the
6551 + application does not send more data than the other end can
6552 + handle.
6553 +
6554 + If the remote host advertises a zero window, we set the MSS to
6555 + the initial MSS so that the application will send an entire MSS
6556 + of data. This data will not be acknowledged by the receiver,
6557 + and the application will retransmit it. This is called the
6558 + "persistent timer" and uses the retransmission mechanim.
6559 + */
6560 + tmp16 = ((unsigned short int)BUF->wnd[0] << 8) + (unsigned short int)BUF->wnd[1];
6561 + if(tmp16 > uip_connr->initialmss ||
6562 + tmp16 == 0) {
6563 + tmp16 = uip_connr->initialmss;
6564 + }
6565 + uip_connr->mss = tmp16;
6566 +
6567 + /* If this packet constitutes an ACK for outstanding data (flagged
6568 + by the UIP_ACKDATA flag, we should call the application since it
6569 + might want to send more data. If the incoming packet had data
6570 + from the peer (as flagged by the UIP_NEWDATA flag), the
6571 + application must also be notified.
6572 +
6573 + When the application is called, the global variable uip_len
6574 + contains the length of the incoming data. The application can
6575 + access the incoming data through the global pointer
6576 + uip_appdata, which usually points 40 bytes into the uip_buf
6577 + array.
6578 +
6579 + If the application wishes to send any data, this data should be
6580 + put into the uip_appdata and the length of the data should be
6581 + put into uip_len. If the application don't have any data to
6582 + send, uip_len must be set to 0. */
6583 + if(uip_flags & (UIP_NEWDATA | UIP_ACKDATA)) {
6584 + uip_slen = 0;
6585 + UIP_APPCALL();
6586 +
6587 + appsend:
6588 +
6589 + if(uip_flags & UIP_ABORT) {
6590 + uip_slen = 0;
6591 + uip_connr->tcpstateflags = CLOSED;
6592 + BUF->flags = TCP_RST | TCP_ACK;
6593 + goto tcp_send_nodata;
6594 + }
6595 +
6596 + if(uip_flags & UIP_CLOSE) {
6597 + uip_slen = 0;
6598 + uip_connr->len = 1;
6599 + uip_connr->tcpstateflags = FIN_WAIT_1;
6600 + uip_connr->nrtx = 0;
6601 + BUF->flags = TCP_FIN | TCP_ACK;
6602 + goto tcp_send_nodata;
6603 + }
6604 +
6605 + /* If uip_slen > 0, the application has data to be sent. */
6606 + if(uip_slen > 0) {
6607 +
6608 + /* If the connection has acknowledged data, the contents of
6609 + the ->len variable should be discarded. */
6610 + if((uip_flags & UIP_ACKDATA) != 0) {
6611 + uip_connr->len = 0;
6612 + }
6613 +
6614 + /* If the ->len variable is non-zero the connection has
6615 + already data in transit and cannot send anymore right
6616 + now. */
6617 + if(uip_connr->len == 0) {
6618 +
6619 + /* The application cannot send more than what is allowed by
6620 + the mss (the minumum of the MSS and the available
6621 + window). */
6622 + if(uip_slen > uip_connr->mss) {
6623 + uip_slen = uip_connr->mss;
6624 + }
6625 +
6626 + /* Remember how much data we send out now so that we know
6627 + when everything has been acknowledged. */
6628 + uip_connr->len = uip_slen;
6629 + } else {
6630 +
6631 + /* If the application already had unacknowledged data, we
6632 + make sure that the application does not send (i.e.,
6633 + retransmit) out more than it previously sent out. */
6634 + uip_slen = uip_connr->len;
6635 + }
6636 + } else {
6637 + uip_connr->len = 0;
6638 + }
6639 + uip_connr->nrtx = 0;
6640 + apprexmit:
6641 + uip_appdata = uip_sappdata;
6642 +
6643 + /* If the application has data to be sent, or if the incoming
6644 + packet had new data in it, we must send out a packet. */
6645 + if(uip_slen > 0 && uip_connr->len > 0) {
6646 + /* Add the length of the IP and TCP headers. */
6647 + uip_len = uip_connr->len + UIP_TCPIP_HLEN;
6648 + /* We always set the ACK flag in response packets. */
6649 + BUF->flags = TCP_ACK | TCP_PSH;
6650 + /* Send the packet. */
6651 + goto tcp_send_noopts;
6652 + }
6653 + /* If there is no data to send, just send out a pure ACK if
6654 + there is newdata. */
6655 + if(uip_flags & UIP_NEWDATA) {
6656 + uip_len = UIP_TCPIP_HLEN;
6657 + BUF->flags = TCP_ACK;
6658 + goto tcp_send_noopts;
6659 + }
6660 + }
6661 + goto drop;
6662 + case LAST_ACK:
6663 + /* We can close this connection if the peer has acknowledged our
6664 + FIN. This is indicated by the UIP_ACKDATA flag. */
6665 + if(uip_flags & UIP_ACKDATA) {
6666 + uip_connr->tcpstateflags = CLOSED;
6667 + uip_flags = UIP_CLOSE;
6668 + UIP_APPCALL();
6669 + }
6670 + break;
6671 +
6672 + case FIN_WAIT_1:
6673 + /* The application has closed the connection, but the remote host
6674 + hasn't closed its end yet. Thus we do nothing but wait for a
6675 + FIN from the other side. */
6676 + if(uip_len > 0) {
6677 + uip_add_rcv_nxt(uip_len);
6678 + }
6679 + if(BUF->flags & TCP_FIN) {
6680 + if(uip_flags & UIP_ACKDATA) {
6681 + uip_connr->tcpstateflags = TIME_WAIT;
6682 + uip_connr->timer = 0;
6683 + uip_connr->len = 0;
6684 + } else {
6685 + uip_connr->tcpstateflags = CLOSING;
6686 + }
6687 + uip_add_rcv_nxt(1);
6688 + uip_flags = UIP_CLOSE;
6689 + UIP_APPCALL();
6690 + goto tcp_send_ack;
6691 + } else if(uip_flags & UIP_ACKDATA) {
6692 + uip_connr->tcpstateflags = FIN_WAIT_2;
6693 + uip_connr->len = 0;
6694 + goto drop;
6695 + }
6696 + if(uip_len > 0) {
6697 + goto tcp_send_ack;
6698 + }
6699 + goto drop;
6700 +
6701 + case FIN_WAIT_2:
6702 + if(uip_len > 0) {
6703 + uip_add_rcv_nxt(uip_len);
6704 + }
6705 + if(BUF->flags & TCP_FIN) {
6706 + uip_connr->tcpstateflags = TIME_WAIT;
6707 + uip_connr->timer = 0;
6708 + uip_add_rcv_nxt(1);
6709 + uip_flags = UIP_CLOSE;
6710 + UIP_APPCALL();
6711 + goto tcp_send_ack;
6712 + }
6713 + if(uip_len > 0) {
6714 + goto tcp_send_ack;
6715 + }
6716 + goto drop;
6717 +
6718 + case TIME_WAIT:
6719 + goto tcp_send_ack;
6720 +
6721 + case CLOSING:
6722 + if(uip_flags & UIP_ACKDATA) {
6723 + uip_connr->tcpstateflags = TIME_WAIT;
6724 + uip_connr->timer = 0;
6725 + }
6726 + }
6727 + goto drop;
6728 +
6729 +
6730 + /* We jump here when we are ready to send the packet, and just want
6731 + to set the appropriate TCP sequence numbers in the TCP header. */
6732 + tcp_send_ack:
6733 + BUF->flags = TCP_ACK;
6734 + tcp_send_nodata:
6735 + uip_len = 40;
6736 + tcp_send_noopts:
6737 + BUF->tcpoffset = 5 << 4;
6738 + tcp_send:
6739 + /* We're done with the input processing. We are now ready to send a
6740 + reply. Our job is to fill in all the fields of the TCP and IP
6741 + headers before calculating the checksum and finally send the
6742 + packet. */
6743 + BUF->ackno[0] = uip_connr->rcv_nxt[0];
6744 + BUF->ackno[1] = uip_connr->rcv_nxt[1];
6745 + BUF->ackno[2] = uip_connr->rcv_nxt[2];
6746 + BUF->ackno[3] = uip_connr->rcv_nxt[3];
6747 +
6748 + BUF->seqno[0] = uip_connr->snd_nxt[0];
6749 + BUF->seqno[1] = uip_connr->snd_nxt[1];
6750 + BUF->seqno[2] = uip_connr->snd_nxt[2];
6751 + BUF->seqno[3] = uip_connr->snd_nxt[3];
6752 +
6753 + BUF->proto = UIP_PROTO_TCP;
6754 +
6755 + BUF->srcport = uip_connr->lport;
6756 + BUF->destport = uip_connr->rport;
6757 +
6758 + BUF->srcipaddr[0] = uip_hostaddr[0];
6759 + BUF->srcipaddr[1] = uip_hostaddr[1];
6760 + BUF->destipaddr[0] = uip_connr->ripaddr[0];
6761 + BUF->destipaddr[1] = uip_connr->ripaddr[1];
6762 +
6763 +
6764 + if(uip_connr->tcpstateflags & UIP_STOPPED) {
6765 + /* If the connection has issued uip_stop(), we advertise a zero
6766 + window so that the remote host will stop sending data. */
6767 + BUF->wnd[0] = BUF->wnd[1] = 0;
6768 + } else {
6769 + BUF->wnd[0] = ((UIP_RECEIVE_WINDOW) >> 8);
6770 + BUF->wnd[1] = ((UIP_RECEIVE_WINDOW) & 0xff);
6771 + }
6772 +
6773 + tcp_send_noconn:
6774 +
6775 + BUF->len[0] = (uip_len >> 8);
6776 + BUF->len[1] = (uip_len & 0xff);
6777 +
6778 + /* Calculate TCP checksum. */
6779 + BUF->tcpchksum = 0;
6780 + BUF->tcpchksum = ~(uip_tcpchksum());
6781 +
6782 + //ip_send_nolen:
6783 +
6784 + BUF->vhl = 0x45;
6785 + BUF->tos = 0;
6786 + BUF->ipoffset[0] = BUF->ipoffset[1] = 0;
6787 + BUF->ttl = UIP_TTL;
6788 + ++ipid;
6789 + BUF->ipid[0] = ipid >> 8;
6790 + BUF->ipid[1] = ipid & 0xff;
6791 +
6792 + /* Calculate IP checksum. */
6793 + BUF->ipchksum = 0;
6794 + BUF->ipchksum = ~(uip_ipchksum());
6795 +
6796 + UIP_STAT(++uip_stat.tcp.sent);
6797 + send:
6798 + UIP_STAT(++uip_stat.ip.sent);
6799 + /* Return and let the caller do the actual transmission. */
6800 + return;
6801 + drop:
6802 + uip_len = 0;
6803 + return;
6804 +}
6805 +/*-----------------------------------------------------------------------------------*/
6806 +/*unsigned short int
6807 +htons(unsigned short int val)
6808 +{
6809 + return HTONS(val);
6810 +}*/
6811 +/*-----------------------------------------------------------------------------------*/
6812 +/** @} */
6813 --- /dev/null
6814 +++ b/net/uip-0.9/uip.h
6815 @@ -0,0 +1,1066 @@
6816 +/**
6817 + * \addtogroup uip
6818 + * @{
6819 + */
6820 +
6821 +/**
6822 + * \file
6823 + * Header file for the uIP TCP/IP stack.
6824 + * \author Adam Dunkels <adam@dunkels.com>
6825 + *
6826 + * The uIP TCP/IP stack header file contains definitions for a number
6827 + * of C macros that are used by uIP programs as well as internal uIP
6828 + * structures, TCP/IP header structures and function declarations.
6829 + *
6830 + */
6831 +
6832 +
6833 +/*
6834 + * Copyright (c) 2001-2003, Adam Dunkels.
6835 + * All rights reserved.
6836 + *
6837 + * Redistribution and use in source and binary forms, with or without
6838 + * modification, are permitted provided that the following conditions
6839 + * are met:
6840 + * 1. Redistributions of source code must retain the above copyright
6841 + * notice, this list of conditions and the following disclaimer.
6842 + * 2. Redistributions in binary form must reproduce the above copyright
6843 + * notice, this list of conditions and the following disclaimer in the
6844 + * documentation and/or other materials provided with the distribution.
6845 + * 3. The name of the author may not be used to endorse or promote
6846 + * products derived from this software without specific prior
6847 + * written permission.
6848 + *
6849 + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
6850 + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
6851 + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
6852 + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
6853 + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
6854 + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
6855 + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
6856 + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
6857 + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
6858 + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
6859 + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
6860 + *
6861 + * This file is part of the uIP TCP/IP stack.
6862 + *
6863 + * $Id: uip.h,v 1.36.2.7 2003/10/07 13:47:51 adam Exp $
6864 + *
6865 + */
6866 +
6867 +#ifndef __UIP_H__
6868 +#define __UIP_H__
6869 +#include <linux/types.h>
6870 +#include <linux/string.h>
6871 +#include <linux/ctype.h>
6872 +#include <malloc.h>
6873 +#include <common.h>
6874 +
6875 +
6876 +#include "uipopt.h"
6877 +
6878 +/*-----------------------------------------------------------------------------------*/
6879 +/* First, the functions that should be called from the
6880 + * system. Initialization, the periodic timer and incoming packets are
6881 + * handled by the following three functions.
6882 + */
6883 +
6884 +/**
6885 + * \defgroup uipconffunc uIP configuration functions
6886 + * @{
6887 + *
6888 + * The uIP configuration functions are used for setting run-time
6889 + * parameters in uIP such as IP addresses.
6890 + */
6891 +
6892 +/**
6893 + * Set the IP address of this host.
6894 + *
6895 + * The IP address is represented as a 4-byte array where the first
6896 + * octet of the IP address is put in the first member of the 4-byte
6897 + * array.
6898 + *
6899 + * \param addr A pointer to a 4-byte representation of the IP address.
6900 + *
6901 + * \hideinitializer
6902 + */
6903 +#define uip_sethostaddr(addr) do { uip_hostaddr[0] = addr[0]; \
6904 + uip_hostaddr[1] = addr[1]; } while(0)
6905 +
6906 +/**
6907 + * Get the IP address of this host.
6908 + *
6909 + * The IP address is represented as a 4-byte array where the first
6910 + * octet of the IP address is put in the first member of the 4-byte
6911 + * array.
6912 + *
6913 + * \param addr A pointer to a 4-byte array that will be filled in with
6914 + * the currently configured IP address.
6915 + *
6916 + * \hideinitializer
6917 + */
6918 +#define uip_gethostaddr(addr) do { addr[0] = uip_hostaddr[0]; \
6919 + addr[1] = uip_hostaddr[1]; } while(0)
6920 +
6921 +/** @} */
6922 +
6923 +/**
6924 + * \defgroup uipinit uIP initialization functions
6925 + * @{
6926 + *
6927 + * The uIP initialization functions are used for booting uIP.
6928 + */
6929 +
6930 +/**
6931 + * uIP initialization function.
6932 + *
6933 + * This function should be called at boot up to initilize the uIP
6934 + * TCP/IP stack.
6935 + */
6936 +void uip_init(void);
6937 +
6938 +/** @} */
6939 +
6940 +/**
6941 + * \defgroup uipdevfunc uIP device driver functions
6942 + * @{
6943 + *
6944 + * These functions are used by a network device driver for interacting
6945 + * with uIP.
6946 + */
6947 +
6948 +/**
6949 + * Process an incoming packet.
6950 + *
6951 + * This function should be called when the device driver has received
6952 + * a packet from the network. The packet from the device driver must
6953 + * be present in the uip_buf buffer, and the length of the packet
6954 + * should be placed in the uip_len variable.
6955 + *
6956 + * When the function returns, there may be an outbound packet placed
6957 + * in the uip_buf packet buffer. If so, the uip_len variable is set to
6958 + * the length of the packet. If no packet is to be sent out, the
6959 + * uip_len variable is set to 0.
6960 + *
6961 + * The usual way of calling the function is presented by the source
6962 + * code below.
6963 + \code
6964 + uip_len = devicedriver_poll();
6965 + if(uip_len > 0) {
6966 + uip_input();
6967 + if(uip_len > 0) {
6968 + devicedriver_send();
6969 + }
6970 + }
6971 + \endcode
6972 + *
6973 + * \note If you are writing a uIP device driver that needs ARP
6974 + * (Address Resolution Protocol), e.g., when running uIP over
6975 + * Ethernet, you will need to call the uIP ARP code before calling
6976 + * this function:
6977 + \code
6978 + #define BUF ((struct uip_eth_hdr *)&uip_buf[0])
6979 + uip_len = ethernet_devicedrver_poll();
6980 + if(uip_len > 0) {
6981 + if(BUF->type == HTONS(UIP_ETHTYPE_IP)) {
6982 + uip_arp_ipin();
6983 + uip_input();
6984 + if(uip_len > 0) {
6985 + uip_arp_out();
6986 + ethernet_devicedriver_send();
6987 + }
6988 + } else if(BUF->type == HTONS(UIP_ETHTYPE_ARP)) {
6989 + uip_arp_arpin();
6990 + if(uip_len > 0) {
6991 + ethernet_devicedriver_send();
6992 + }
6993 + }
6994 + \endcode
6995 + *
6996 + * \hideinitializer
6997 + */
6998 +#define uip_input() uip_process(UIP_DATA)
6999 +
7000 +/**
7001 + * Periodic processing for a connection identified by its number.
7002 + *
7003 + * This function does the necessary periodic processing (timers,
7004 + * polling) for a uIP TCP conneciton, and should be called when the
7005 + * periodic uIP timer goes off. It should be called for every
7006 + * connection, regardless of whether they are open of closed.
7007 + *
7008 + * When the function returns, it may have an outbound packet waiting
7009 + * for service in the uIP packet buffer, and if so the uip_len
7010 + * variable is set to a value larger than zero. The device driver
7011 + * should be called to send out the packet.
7012 + *
7013 + * The ususal way of calling the function is through a for() loop like
7014 + * this:
7015 + \code
7016 + for(i = 0; i < UIP_CONNS; ++i) {
7017 + uip_periodic(i);
7018 + if(uip_len > 0) {
7019 + devicedriver_send();
7020 + }
7021 + }
7022 + \endcode
7023 + *
7024 + * \note If you are writing a uIP device driver that needs ARP
7025 + * (Address Resolution Protocol), e.g., when running uIP over
7026 + * Ethernet, you will need to call the uip_arp_out() function before
7027 + * calling the device driver:
7028 + \code
7029 + for(i = 0; i < UIP_CONNS; ++i) {
7030 + uip_periodic(i);
7031 + if(uip_len > 0) {
7032 + uip_arp_out();
7033 + ethernet_devicedriver_send();
7034 + }
7035 + }
7036 + \endcode
7037 + *
7038 + * \param conn The number of the connection which is to be periodically polled.
7039 + *
7040 + * \hideinitializer
7041 + */
7042 +#define uip_periodic(conn) do { uip_conn = &uip_conns[conn]; \
7043 + uip_process(UIP_TIMER); } while (0)
7044 +
7045 +/**
7046 + * Periodic processing for a connection identified by a pointer to its structure.
7047 + *
7048 + * Same as uip_periodic() but takes a pointer to the actual uip_conn
7049 + * struct instead of an integer as its argument. This function can be
7050 + * used to force periodic processing of a specific connection.
7051 + *
7052 + * \param conn A pointer to the uip_conn struct for the connection to
7053 + * be processed.
7054 + *
7055 + * \hideinitializer
7056 + */
7057 +#define uip_periodic_conn(conn) do { uip_conn = conn; \
7058 + uip_process(UIP_TIMER); } while (0)
7059 +
7060 +#if UIP_UDP
7061 +/**
7062 + * Periodic processing for a UDP connection identified by its number.
7063 + *
7064 + * This function is essentially the same as uip_prerioic(), but for
7065 + * UDP connections. It is called in a similar fashion as the
7066 + * uip_periodic() function:
7067 + \code
7068 + for(i = 0; i < UIP_UDP_CONNS; i++) {
7069 + uip_udp_periodic(i);
7070 + if(uip_len > 0) {
7071 + devicedriver_send();
7072 + }
7073 + }
7074 + \endcode
7075 + *
7076 + * \note As for the uip_periodic() function, special care has to be
7077 + * taken when using uIP together with ARP and Ethernet:
7078 + \code
7079 + for(i = 0; i < UIP_UDP_CONNS; i++) {
7080 + uip_udp_periodic(i);
7081 + if(uip_len > 0) {
7082 + uip_arp_out();
7083 + ethernet_devicedriver_send();
7084 + }
7085 + }
7086 + \endcode
7087 + *
7088 + * \param conn The number of the UDP connection to be processed.
7089 + *
7090 + * \hideinitializer
7091 + */
7092 +#define uip_udp_periodic(conn) do { uip_udp_conn = &uip_udp_conns[conn]; \
7093 + uip_process(UIP_UDP_TIMER); } while (0)
7094 +
7095 +/**
7096 + * Periodic processing for a UDP connection identified by a pointer to
7097 + * its structure.
7098 + *
7099 + * Same as uip_udp_periodic() but takes a pointer to the actual
7100 + * uip_conn struct instead of an integer as its argument. This
7101 + * function can be used to force periodic processing of a specific
7102 + * connection.
7103 + *
7104 + * \param conn A pointer to the uip_udp_conn struct for the connection
7105 + * to be processed.
7106 + *
7107 + * \hideinitializer
7108 + */
7109 +#define uip_udp_periodic_conn(conn) do { uip_udp_conn = conn; \
7110 + uip_process(UIP_UDP_TIMER); } while (0)
7111 +
7112 +
7113 +#endif /* UIP_UDP */
7114 +
7115 +/**
7116 + * The uIP packet buffer.
7117 + *
7118 + * The uip_buf array is used to hold incoming and outgoing
7119 + * packets. The device driver should place incoming data into this
7120 + * buffer. When sending data, the device driver should read the link
7121 + * level headers and the TCP/IP headers from this buffer. The size of
7122 + * the link level headers is configured by the UIP_LLH_LEN define.
7123 + *
7124 + * \note The application data need not be placed in this buffer, so
7125 + * the device driver must read it from the place pointed to by the
7126 + * uip_appdata pointer as illustrated by the following example:
7127 + \code
7128 + void
7129 + devicedriver_send(void)
7130 + {
7131 + hwsend(&uip_buf[0], UIP_LLH_LEN);
7132 + hwsend(&uip_buf[UIP_LLH_LEN], 40);
7133 + hwsend(uip_appdata, uip_len - 40 - UIP_LLH_LEN);
7134 + }
7135 + \endcode
7136 + */
7137 +extern u8_t uip_buf[UIP_BUFSIZE+2];
7138 +
7139 +/** @} */
7140 +
7141 +/*-----------------------------------------------------------------------------------*/
7142 +/* Functions that are used by the uIP application program. Opening and
7143 + * closing connections, sending and receiving data, etc. is all
7144 + * handled by the functions below.
7145 +*/
7146 +/**
7147 + * \defgroup uipappfunc uIP application functions
7148 + * @{
7149 + *
7150 + * Functions used by an application running of top of uIP.
7151 + */
7152 +
7153 +/**
7154 + * Start listening to the specified port.
7155 + *
7156 + * \note Since this function expects the port number in network byte
7157 + * order, a conversion using HTONS() or htons() is necessary.
7158 + *
7159 + \code
7160 + uip_listen(HTONS(80));
7161 + \endcode
7162 + *
7163 + * \param port A 16-bit port number in network byte order.
7164 + */
7165 +void uip_listen(u16_t port);
7166 +
7167 +/**
7168 + * Stop listening to the specified port.
7169 + *
7170 + * \note Since this function expects the port number in network byte
7171 + * order, a conversion using HTONS() or htons() is necessary.
7172 + *
7173 + \code
7174 + uip_unlisten(HTONS(80));
7175 + \endcode
7176 + *
7177 + * \param port A 16-bit port number in network byte order.
7178 + */
7179 +void uip_unlisten(u16_t port);
7180 +
7181 +/**
7182 + * Connect to a remote host using TCP.
7183 + *
7184 + * This function is used to start a new connection to the specified
7185 + * port on the specied host. It allocates a new connection identifier,
7186 + * sets the connection to the SYN_SENT state and sets the
7187 + * retransmission timer to 0. This will cause a TCP SYN segment to be
7188 + * sent out the next time this connection is periodically processed,
7189 + * which usually is done within 0.5 seconds after the call to
7190 + * uip_connect().
7191 + *
7192 + * \note This function is avaliable only if support for active open
7193 + * has been configured by defining UIP_ACTIVE_OPEN to 1 in uipopt.h.
7194 + *
7195 + * \note Since this function requires the port number to be in network
7196 + * byte order, a convertion using HTONS() or htons() is necessary.
7197 + *
7198 + \code
7199 + u16_t ipaddr[2];
7200 +
7201 + uip_ipaddr(ipaddr, 192,168,1,2);
7202 + uip_connect(ipaddr, HTONS(80));
7203 + \endcode
7204 + *
7205 + * \param ripaddr A pointer to a 4-byte array representing the IP
7206 + * address of the remote hot.
7207 + *
7208 + * \param port A 16-bit port number in network byte order.
7209 + *
7210 + * \return A pointer to the uIP connection identifier for the new connection,
7211 + * or NULL if no connection could be allocated.
7212 + *
7213 + */
7214 +struct uip_conn *uip_connect(u16_t *ripaddr, u16_t port);
7215 +
7216 +
7217 +
7218 +/**
7219 + * \internal
7220 + *
7221 + * Check if a connection has outstanding (i.e., unacknowledged) data.
7222 + *
7223 + * \param conn A pointer to the uip_conn structure for the connection.
7224 + *
7225 + * \hideinitializer
7226 + */
7227 +#define uip_outstanding(conn) ((conn)->len)
7228 +
7229 +/**
7230 + * Send data on the current connection.
7231 + *
7232 + * This function is used to send out a single segment of TCP
7233 + * data. Only applications that have been invoked by uIP for event
7234 + * processing can send data.
7235 + *
7236 + * The amount of data that actually is sent out after a call to this
7237 + * funcion is determined by the maximum amount of data TCP allows. uIP
7238 + * will automatically crop the data so that only the appropriate
7239 + * amount of data is sent. The function uip_mss() can be used to query
7240 + * uIP for the amount of data that actually will be sent.
7241 + *
7242 + * \note This function does not guarantee that the sent data will
7243 + * arrive at the destination. If the data is lost in the network, the
7244 + * application will be invoked with the uip_rexmit() event being
7245 + * set. The application will then have to resend the data using this
7246 + * function.
7247 + *
7248 + * \param data A pointer to the data which is to be sent.
7249 + *
7250 + * \param len The maximum amount of data bytes to be sent.
7251 + *
7252 + * \hideinitializer
7253 + */
7254 +#define uip_send(data, len) do { uip_sappdata = (data); uip_slen = (len);} while(0)
7255 +
7256 +/**
7257 + * The length of any incoming data that is currently avaliable (if avaliable)
7258 + * in the uip_appdata buffer.
7259 + *
7260 + * The test function uip_data() must first be used to check if there
7261 + * is any data available at all.
7262 + *
7263 + * \hideinitializer
7264 + */
7265 +#define uip_datalen() uip_len
7266 +
7267 +/**
7268 + * The length of any out-of-band data (urgent data) that has arrived
7269 + * on the connection.
7270 + *
7271 + * \note The configuration parameter UIP_URGDATA must be set for this
7272 + * function to be enabled.
7273 + *
7274 + * \hideinitializer
7275 + */
7276 +#define uip_urgdatalen() uip_urglen
7277 +
7278 +/**
7279 + * Close the current connection.
7280 + *
7281 + * This function will close the current connection in a nice way.
7282 + *
7283 + * \hideinitializer
7284 + */
7285 +#define uip_close() (uip_flags = UIP_CLOSE)
7286 +
7287 +/**
7288 + * Abort the current connection.
7289 + *
7290 + * This function will abort (reset) the current connection, and is
7291 + * usually used when an error has occured that prevents using the
7292 + * uip_close() function.
7293 + *
7294 + * \hideinitializer
7295 + */
7296 +#define uip_abort() (uip_flags = UIP_ABORT)
7297 +
7298 +/**
7299 + * Tell the sending host to stop sending data.
7300 + *
7301 + * This function will close our receiver's window so that we stop
7302 + * receiving data for the current connection.
7303 + *
7304 + * \hideinitializer
7305 + */
7306 +#define uip_stop() (uip_conn->tcpstateflags |= UIP_STOPPED)
7307 +
7308 +/**
7309 + * Find out if the current connection has been previously stopped with
7310 + * uip_stop().
7311 + *
7312 + * \hideinitializer
7313 + */
7314 +#define uip_stopped(conn) ((conn)->tcpstateflags & UIP_STOPPED)
7315 +
7316 +/**
7317 + * Restart the current connection, if is has previously been stopped
7318 + * with uip_stop().
7319 + *
7320 + * This function will open the receiver's window again so that we
7321 + * start receiving data for the current connection.
7322 + *
7323 + * \hideinitializer
7324 + */
7325 +#define uip_restart() do { uip_flags |= UIP_NEWDATA; \
7326 + uip_conn->tcpstateflags &= ~UIP_STOPPED; \
7327 + } while(0)
7328 +
7329 +
7330 +/* uIP tests that can be made to determine in what state the current
7331 + connection is, and what the application function should do. */
7332 +
7333 +/**
7334 + * Is new incoming data available?
7335 + *
7336 + * Will reduce to non-zero if there is new data for the application
7337 + * present at the uip_appdata pointer. The size of the data is
7338 + * avaliable through the uip_len variable.
7339 + *
7340 + * \hideinitializer
7341 + */
7342 +#define uip_newdata() (uip_flags & UIP_NEWDATA)
7343 +
7344 +/**
7345 + * Has previously sent data been acknowledged?
7346 + *
7347 + * Will reduce to non-zero if the previously sent data has been
7348 + * acknowledged by the remote host. This means that the application
7349 + * can send new data.
7350 + *
7351 + * \hideinitializer
7352 + */
7353 +#define uip_acked() (uip_flags & UIP_ACKDATA)
7354 +
7355 +/**
7356 + * Has the connection just been connected?
7357 + *
7358 + * Reduces to non-zero if the current connection has been connected to
7359 + * a remote host. This will happen both if the connection has been
7360 + * actively opened (with uip_connect()) or passively opened (with
7361 + * uip_listen()).
7362 + *
7363 + * \hideinitializer
7364 + */
7365 +#define uip_connected() (uip_flags & UIP_CONNECTED)
7366 +
7367 +/**
7368 + * Has the connection been closed by the other end?
7369 + *
7370 + * Is non-zero if the connection has been closed by the remote
7371 + * host. The application may then do the necessary clean-ups.
7372 + *
7373 + * \hideinitializer
7374 + */
7375 +#define uip_closed() (uip_flags & UIP_CLOSE)
7376 +
7377 +/**
7378 + * Has the connection been aborted by the other end?
7379 + *
7380 + * Non-zero if the current connection has been aborted (reset) by the
7381 + * remote host.
7382 + *
7383 + * \hideinitializer
7384 + */
7385 +#define uip_aborted() (uip_flags & UIP_ABORT)
7386 +
7387 +/**
7388 + * Has the connection timed out?
7389 + *
7390 + * Non-zero if the current connection has been aborted due to too many
7391 + * retransmissions.
7392 + *
7393 + * \hideinitializer
7394 + */
7395 +#define uip_timedout() (uip_flags & UIP_TIMEDOUT)
7396 +
7397 +/**
7398 + * Do we need to retransmit previously data?
7399 + *
7400 + * Reduces to non-zero if the previously sent data has been lost in
7401 + * the network, and the application should retransmit it. The
7402 + * application should send the exact same data as it did the last
7403 + * time, using the uip_send() function.
7404 + *
7405 + * \hideinitializer
7406 + */
7407 +#define uip_rexmit() (uip_flags & UIP_REXMIT)
7408 +
7409 +/**
7410 + * Is the connection being polled by uIP?
7411 + *
7412 + * Is non-zero if the reason the application is invoked is that the
7413 + * current connection has been idle for a while and should be
7414 + * polled.
7415 + *
7416 + * The polling event can be used for sending data without having to
7417 + * wait for the remote host to send data.
7418 + *
7419 + * \hideinitializer
7420 + */
7421 +#define uip_poll() (uip_flags & UIP_POLL)
7422 +
7423 +/**
7424 + * Get the initial maxium segment size (MSS) of the current
7425 + * connection.
7426 + *
7427 + * \hideinitializer
7428 + */
7429 +#define uip_initialmss() (uip_conn->initialmss)
7430 +
7431 +/**
7432 + * Get the current maxium segment size that can be sent on the current
7433 + * connection.
7434 + *
7435 + * The current maxiumum segment size that can be sent on the
7436 + * connection is computed from the receiver's window and the MSS of
7437 + * the connection (which also is available by calling
7438 + * uip_initialmss()).
7439 + *
7440 + * \hideinitializer
7441 + */
7442 +#define uip_mss() (uip_conn->mss)
7443 +
7444 +/**
7445 + * Set up a new UDP connection.
7446 + *
7447 + * \param ripaddr A pointer to a 4-byte structure representing the IP
7448 + * address of the remote host.
7449 + *
7450 + * \param rport The remote port number in network byte order.
7451 + *
7452 + * \return The uip_udp_conn structure for the new connection or NULL
7453 + * if no connection could be allocated.
7454 + */
7455 +struct uip_udp_conn *uip_udp_new(u16_t *ripaddr, u16_t rport);
7456 +
7457 +/**
7458 + * Removed a UDP connection.
7459 + *
7460 + * \param conn A pointer to the uip_udp_conn structure for the connection.
7461 + *
7462 + * \hideinitializer
7463 + */
7464 +#define uip_udp_remove(conn) (conn)->lport = 0
7465 +
7466 +/**
7467 + * Send a UDP datagram of length len on the current connection.
7468 + *
7469 + * This function can only be called in response to a UDP event (poll
7470 + * or newdata). The data must be present in the uip_buf buffer, at the
7471 + * place pointed to by the uip_appdata pointer.
7472 + *
7473 + * \param len The length of the data in the uip_buf buffer.
7474 + *
7475 + * \hideinitializer
7476 + */
7477 +#define uip_udp_send(len) uip_slen = (len)
7478 +
7479 +/** @} */
7480 +
7481 +/* uIP convenience and converting functions. */
7482 +
7483 +/**
7484 + * \defgroup uipconvfunc uIP conversion functions
7485 + * @{
7486 + *
7487 + * These functions can be used for converting between different data
7488 + * formats used by uIP.
7489 + */
7490 +
7491 +/**
7492 + * Pack an IP address into a 4-byte array which is used by uIP to
7493 + * represent IP addresses.
7494 + *
7495 + * Example:
7496 + \code
7497 + u16_t ipaddr[2];
7498 +
7499 + uip_ipaddr(&ipaddr, 192,168,1,2);
7500 + \endcode
7501 + *
7502 + * \param addr A pointer to a 4-byte array that will be filled in with
7503 + * the IP addres.
7504 + * \param addr0 The first octet of the IP address.
7505 + * \param addr1 The second octet of the IP address.
7506 + * \param addr2 The third octet of the IP address.
7507 + * \param addr3 The forth octet of the IP address.
7508 + *
7509 + * \hideinitializer
7510 + */
7511 +#define uip_ipaddr(addr, addr0,addr1,addr2,addr3) do { \
7512 + (addr)[0] = HTONS(((addr0) << 8) | (addr1)); \
7513 + (addr)[1] = HTONS(((addr2) << 8) | (addr3)); \
7514 + } while(0)
7515 +
7516 +/**
7517 + * Convert 16-bit quantity from host byte order to network byte order.
7518 + *
7519 + * This macro is primarily used for converting constants from host
7520 + * byte order to network byte order. For converting variables to
7521 + * network byte order, use the htons() function instead.
7522 + *
7523 + * \hideinitializer
7524 + */
7525 +#ifndef HTONS
7526 +# if BYTE_ORDER == BIG_ENDIAN
7527 +# define HTONS(n) (n)
7528 +# else /* BYTE_ORDER == BIG_ENDIAN */
7529 +# define HTONS(n) ((((u16_t)((n) & 0xff)) << 8) | (((n) & 0xff00) >> 8))
7530 +# endif /* BYTE_ORDER == BIG_ENDIAN */
7531 +#endif /* HTONS */
7532 +
7533 +/**
7534 + * Convert 16-bit quantity from host byte order to network byte order.
7535 + *
7536 + * This function is primarily used for converting variables from host
7537 + * byte order to network byte order. For converting constants to
7538 + * network byte order, use the HTONS() macro instead.
7539 + */
7540 +#ifndef htons
7541 +u16_t htons(u16_t val);
7542 +#endif /* htons */
7543 +
7544 +/** @} */
7545 +
7546 +/**
7547 + * Pointer to the application data in the packet buffer.
7548 + *
7549 + * This pointer points to the application data when the application is
7550 + * called. If the application wishes to send data, the application may
7551 + * use this space to write the data into before calling uip_send().
7552 + */
7553 +extern volatile u8_t *uip_appdata;
7554 +extern volatile u8_t *uip_sappdata;
7555 +
7556 +#if UIP_URGDATA > 0
7557 +/* u8_t *uip_urgdata:
7558 + *
7559 + * This pointer points to any urgent data that has been received. Only
7560 + * present if compiled with support for urgent data (UIP_URGDATA).
7561 + */
7562 +extern volatile u8_t *uip_urgdata;
7563 +#endif /* UIP_URGDATA > 0 */
7564 +
7565 +
7566 +/* u[8|16]_t uip_len:
7567 + *
7568 + * When the application is called, uip_len contains the length of any
7569 + * new data that has been received from the remote host. The
7570 + * application should set this variable to the size of any data that
7571 + * the application wishes to send. When the network device driver
7572 + * output function is called, uip_len should contain the length of the
7573 + * outgoing packet.
7574 + */
7575 +extern volatile u16_t uip_len, uip_slen;
7576 +
7577 +#if UIP_URGDATA > 0
7578 +extern volatile u8_t uip_urglen, uip_surglen;
7579 +#endif /* UIP_URGDATA > 0 */
7580 +
7581 +
7582 +/**
7583 + * Representation of a uIP TCP connection.
7584 + *
7585 + * The uip_conn structure is used for identifying a connection. All
7586 + * but one field in the structure are to be considered read-only by an
7587 + * application. The only exception is the appstate field whos purpose
7588 + * is to let the application store application-specific state (e.g.,
7589 + * file pointers) for the connection. The size of this field is
7590 + * configured in the "uipopt.h" header file.
7591 + */
7592 +struct uip_conn {
7593 + u16_t ripaddr[2]; /**< The IP address of the remote host. */
7594 +
7595 + u16_t lport; /**< The local TCP port, in network byte order. */
7596 + u16_t rport; /**< The local remote TCP port, in network byte
7597 + order. */
7598 +
7599 + u8_t rcv_nxt[4]; /**< The sequence number that we expect to
7600 + receive next. */
7601 + u8_t snd_nxt[4]; /**< The sequence number that was last sent by
7602 + us. */
7603 + u16_t len; /**< Length of the data that was previously sent. */
7604 + u16_t mss; /**< Current maximum segment size for the
7605 + connection. */
7606 + u16_t initialmss; /**< Initial maximum segment size for the
7607 + connection. */
7608 + u8_t sa; /**< Retransmission time-out calculation state
7609 + variable. */
7610 + u8_t sv; /**< Retransmission time-out calculation state
7611 + variable. */
7612 + u8_t rto; /**< Retransmission time-out. */
7613 + u8_t tcpstateflags; /**< TCP state and flags. */
7614 + u8_t timer; /**< The retransmission timer. */
7615 + u8_t nrtx; /**< The number of retransmissions for the last
7616 + segment sent. */
7617 +
7618 + /** The application state. */
7619 + u8_t appstate[UIP_APPSTATE_SIZE];
7620 +};
7621 +
7622 +
7623 +/* Pointer to the current connection. */
7624 +extern struct uip_conn *uip_conn;
7625 +/* The array containing all uIP connections. */
7626 +extern struct uip_conn uip_conns[UIP_CONNS];
7627 +/**
7628 + * \addtogroup uiparch
7629 + * @{
7630 + */
7631 +
7632 +/**
7633 + * 4-byte array used for the 32-bit sequence number calculations.
7634 + */
7635 +extern volatile u8_t uip_acc32[4];
7636 +
7637 +/** @} */
7638 +
7639 +
7640 +#if UIP_UDP
7641 +/**
7642 + * Representation of a uIP UDP connection.
7643 + */
7644 +struct uip_udp_conn {
7645 + u16_t ripaddr[2]; /**< The IP address of the remote peer. */
7646 + u16_t lport; /**< The local port number in network byte order. */
7647 + u16_t rport; /**< The remote port number in network byte order. */
7648 +};
7649 +
7650 +extern struct uip_udp_conn *uip_udp_conn;
7651 +extern struct uip_udp_conn uip_udp_conns[UIP_UDP_CONNS];
7652 +#endif /* UIP_UDP */
7653 +
7654 +/**
7655 + * The structure holding the TCP/IP statistics that are gathered if
7656 + * UIP_STATISTICS is set to 1.
7657 + *
7658 + */
7659 +struct uip_stats {
7660 + struct {
7661 + uip_stats_t drop; /**< Number of dropped packets at the IP
7662 + layer. */
7663 + uip_stats_t recv; /**< Number of received packets at the IP
7664 + layer. */
7665 + uip_stats_t sent; /**< Number of sent packets at the IP
7666 + layer. */
7667 + uip_stats_t vhlerr; /**< Number of packets dropped due to wrong
7668 + IP version or header length. */
7669 + uip_stats_t hblenerr; /**< Number of packets dropped due to wrong
7670 + IP length, high byte. */
7671 + uip_stats_t lblenerr; /**< Number of packets dropped due to wrong
7672 + IP length, low byte. */
7673 + uip_stats_t fragerr; /**< Number of packets dropped since they
7674 + were IP fragments. */
7675 + uip_stats_t chkerr; /**< Number of packets dropped due to IP
7676 + checksum errors. */
7677 + uip_stats_t protoerr; /**< Number of packets dropped since they
7678 + were neither ICMP, UDP nor TCP. */
7679 + } ip; /**< IP statistics. */
7680 + struct {
7681 + uip_stats_t drop; /**< Number of dropped ICMP packets. */
7682 + uip_stats_t recv; /**< Number of received ICMP packets. */
7683 + uip_stats_t sent; /**< Number of sent ICMP packets. */
7684 + uip_stats_t typeerr; /**< Number of ICMP packets with a wrong
7685 + type. */
7686 + } icmp; /**< ICMP statistics. */
7687 + struct {
7688 + uip_stats_t drop; /**< Number of dropped TCP segments. */
7689 + uip_stats_t recv; /**< Number of recived TCP segments. */
7690 + uip_stats_t sent; /**< Number of sent TCP segments. */
7691 + uip_stats_t chkerr; /**< Number of TCP segments with a bad
7692 + checksum. */
7693 + uip_stats_t ackerr; /**< Number of TCP segments with a bad ACK
7694 + number. */
7695 + uip_stats_t rst; /**< Number of recevied TCP RST (reset) segments. */
7696 + uip_stats_t rexmit; /**< Number of retransmitted TCP segments. */
7697 + uip_stats_t syndrop; /**< Number of dropped SYNs due to too few
7698 + connections was avaliable. */
7699 + uip_stats_t synrst; /**< Number of SYNs for closed ports,
7700 + triggering a RST. */
7701 + } tcp; /**< TCP statistics. */
7702 +};
7703 +
7704 +/**
7705 + * The uIP TCP/IP statistics.
7706 + *
7707 + * This is the variable in which the uIP TCP/IP statistics are gathered.
7708 + */
7709 +extern struct uip_stats uip_stat;
7710 +
7711 +
7712 +/*-----------------------------------------------------------------------------------*/
7713 +/* All the stuff below this point is internal to uIP and should not be
7714 + * used directly by an application or by a device driver.
7715 + */
7716 +/*-----------------------------------------------------------------------------------*/
7717 +/* u8_t uip_flags:
7718 + *
7719 + * When the application is called, uip_flags will contain the flags
7720 + * that are defined in this file. Please read below for more
7721 + * infomation.
7722 + */
7723 +extern volatile u8_t uip_flags;
7724 +
7725 +/* The following flags may be set in the global variable uip_flags
7726 + before calling the application callback. The UIP_ACKDATA and
7727 + UIP_NEWDATA flags may both be set at the same time, whereas the
7728 + others are mutualy exclusive. Note that these flags should *NOT* be
7729 + accessed directly, but through the uIP functions/macros. */
7730 +
7731 +#define UIP_ACKDATA 1 /* Signifies that the outstanding data was
7732 + acked and the application should send
7733 + out new data instead of retransmitting
7734 + the last data. */
7735 +#define UIP_NEWDATA 2 /* Flags the fact that the peer has sent
7736 + us new data. */
7737 +#define UIP_REXMIT 4 /* Tells the application to retransmit the
7738 + data that was last sent. */
7739 +#define UIP_POLL 8 /* Used for polling the application, to
7740 + check if the application has data that
7741 + it wants to send. */
7742 +#define UIP_CLOSE 16 /* The remote host has closed the
7743 + connection, thus the connection has
7744 + gone away. Or the application signals
7745 + that it wants to close the
7746 + connection. */
7747 +#define UIP_ABORT 32 /* The remote host has aborted the
7748 + connection, thus the connection has
7749 + gone away. Or the application signals
7750 + that it wants to abort the
7751 + connection. */
7752 +#define UIP_CONNECTED 64 /* We have got a connection from a remote
7753 + host and have set up a new connection
7754 + for it, or an active connection has
7755 + been successfully established. */
7756 +
7757 +#define UIP_TIMEDOUT 128 /* The connection has been aborted due to
7758 + too many retransmissions. */
7759 +
7760 +
7761 +/* uip_process(flag):
7762 + *
7763 + * The actual uIP function which does all the work.
7764 + */
7765 +void uip_process(u8_t flag);
7766 +
7767 +/* The following flags are passed as an argument to the uip_process()
7768 + function. They are used to distinguish between the two cases where
7769 + uip_process() is called. It can be called either because we have
7770 + incoming data that should be processed, or because the periodic
7771 + timer has fired. */
7772 +
7773 +#define UIP_DATA 1 /* Tells uIP that there is incoming data in
7774 + the uip_buf buffer. The length of the
7775 + data is stored in the global variable
7776 + uip_len. */
7777 +#define UIP_TIMER 2 /* Tells uIP that the periodic timer has
7778 + fired. */
7779 +#if UIP_UDP
7780 +#define UIP_UDP_TIMER 3
7781 +#endif /* UIP_UDP */
7782 +
7783 +/* The TCP states used in the uip_conn->tcpstateflags. */
7784 +#define CLOSED 0
7785 +#define SYN_RCVD 1
7786 +#define SYN_SENT 2
7787 +#define ESTABLISHED 3
7788 +#define FIN_WAIT_1 4
7789 +#define FIN_WAIT_2 5
7790 +#define CLOSING 6
7791 +#define TIME_WAIT 7
7792 +#define LAST_ACK 8
7793 +#define TS_MASK 15
7794 +
7795 +#define UIP_STOPPED 16
7796 +
7797 +#define UIP_TCPIP_HLEN 40
7798 +
7799 +/* The TCP and IP headers. */
7800 +typedef struct {
7801 + /* IP header. */
7802 + u8_t vhl,
7803 + tos,
7804 + len[2],
7805 + ipid[2],
7806 + ipoffset[2],
7807 + ttl,
7808 + proto;
7809 + u16_t ipchksum;
7810 + u16_t srcipaddr[2],
7811 + destipaddr[2];
7812 +
7813 + /* TCP header. */
7814 + u16_t srcport,
7815 + destport;
7816 + u8_t seqno[4],
7817 + ackno[4],
7818 + tcpoffset,
7819 + flags,
7820 + wnd[2];
7821 + u16_t tcpchksum;
7822 + u8_t urgp[2];
7823 + u8_t optdata[4];
7824 +} uip_tcpip_hdr;
7825 +
7826 +/* The ICMP and IP headers. */
7827 +typedef struct {
7828 + /* IP header. */
7829 + u8_t vhl,
7830 + tos,
7831 + len[2],
7832 + ipid[2],
7833 + ipoffset[2],
7834 + ttl,
7835 + proto;
7836 + u16_t ipchksum;
7837 + u16_t srcipaddr[2],
7838 + destipaddr[2];
7839 + /* ICMP (echo) header. */
7840 + u8_t type, icode;
7841 + u16_t icmpchksum;
7842 + u16_t id, seqno;
7843 +} uip_icmpip_hdr;
7844 +
7845 +
7846 +/* The UDP and IP headers. */
7847 +typedef struct {
7848 + /* IP header. */
7849 + u8_t vhl,
7850 + tos,
7851 + len[2],
7852 + ipid[2],
7853 + ipoffset[2],
7854 + ttl,
7855 + proto;
7856 + u16_t ipchksum;
7857 + u16_t srcipaddr[2],
7858 + destipaddr[2];
7859 +
7860 + /* UDP header. */
7861 + u16_t srcport,
7862 + destport;
7863 + u16_t udplen;
7864 + u16_t udpchksum;
7865 +} uip_udpip_hdr;
7866 +
7867 +#define UIP_PROTO_ICMP 1
7868 +#define UIP_PROTO_TCP 6
7869 +#define UIP_PROTO_UDP 17
7870 +
7871 +#if UIP_FIXEDADDR
7872 +extern const u16_t uip_hostaddr[2];
7873 +#else /* UIP_FIXEDADDR */
7874 +extern u16_t uip_hostaddr[2];
7875 +#endif /* UIP_FIXEDADDR */
7876 +
7877 +#endif /* __UIP_H__ */
7878 +
7879 +
7880 +/** @} */
7881 +
7882 --- /dev/null
7883 +++ b/net/uip-0.9/uip_arch.c
7884 @@ -0,0 +1,145 @@
7885 +/*
7886 + * Copyright (c) 2001, Adam Dunkels.
7887 + * All rights reserved.
7888 + *
7889 + * Redistribution and use in source and binary forms, with or without
7890 + * modification, are permitted provided that the following conditions
7891 + * are met:
7892 + * 1. Redistributions of source code must retain the above copyright
7893 + * notice, this list of conditions and the following disclaimer.
7894 + * 2. Redistributions in binary form must reproduce the above copyright
7895 + * notice, this list of conditions and the following disclaimer in the
7896 + * documentation and/or other materials provided with the distribution.
7897 + * 3. The name of the author may not be used to endorse or promote
7898 + * products derived from this software without specific prior
7899 + * written permission.
7900 + *
7901 + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
7902 + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
7903 + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
7904 + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
7905 + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
7906 + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
7907 + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
7908 + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
7909 + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
7910 + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
7911 + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
7912 + *
7913 + * This file is part of the uIP TCP/IP stack.
7914 + *
7915 + * $Id: uip_arch.c,v 1.2.2.1 2003/10/04 22:54:17 adam Exp $
7916 + *
7917 + */
7918 +
7919 +
7920 +#include "uip.h"
7921 +#include "uip_arch.h"
7922 +
7923 +#define BUF ((uip_tcpip_hdr *)&uip_buf[UIP_LLH_LEN])
7924 +#define IP_PROTO_TCP 6
7925 +
7926 +/*-----------------------------------------------------------------------------------*/
7927 +void
7928 +uip_add32(u8_t *op32, u16_t op16)
7929 +{
7930 +
7931 + uip_acc32[3] = op32[3] + (op16 & 0xff);
7932 + uip_acc32[2] = op32[2] + (op16 >> 8);
7933 + uip_acc32[1] = op32[1];
7934 + uip_acc32[0] = op32[0];
7935 +
7936 + if(uip_acc32[2] < (op16 >> 8)) {
7937 + ++uip_acc32[1];
7938 + if(uip_acc32[1] == 0) {
7939 + ++uip_acc32[0];
7940 + }
7941 + }
7942 +
7943 +
7944 + if(uip_acc32[3] < (op16 & 0xff)) {
7945 + ++uip_acc32[2];
7946 + if(uip_acc32[2] == 0) {
7947 + ++uip_acc32[1];
7948 + if(uip_acc32[1] == 0) {
7949 + ++uip_acc32[0];
7950 + }
7951 + }
7952 + }
7953 +}
7954 +/*-----------------------------------------------------------------------------------*/
7955 +u16_t
7956 +uip_chksum(u16_t *sdata, u16_t len)
7957 +{
7958 + u16_t acc;
7959 +
7960 + for(acc = 0; len > 1; len -= 2) {
7961 + acc += *sdata;
7962 + if(acc < *sdata) {
7963 + /* Overflow, so we add the carry to acc (i.e., increase by
7964 + one). */
7965 + ++acc;
7966 + }
7967 + ++sdata;
7968 + }
7969 +
7970 + /* add up any odd byte */
7971 + if(len == 1) {
7972 + acc += htons(((u16_t)(*(u8_t *)sdata)) << 8);
7973 + if(acc < htons(((u16_t)(*(u8_t *)sdata)) << 8)) {
7974 + ++acc;
7975 + }
7976 + }
7977 +
7978 + return acc;
7979 +}
7980 +/*-----------------------------------------------------------------------------------*/
7981 +u16_t
7982 +uip_ipchksum(void)
7983 +{
7984 + return uip_chksum((u16_t *)&uip_buf[UIP_LLH_LEN], 20);
7985 +}
7986 +/*-----------------------------------------------------------------------------------*/
7987 +u16_t
7988 +uip_tcpchksum(void)
7989 +{
7990 + u16_t hsum, sum;
7991 +
7992 +
7993 + /* Compute the checksum of the TCP header. */
7994 + hsum = uip_chksum((u16_t *)&uip_buf[20 + UIP_LLH_LEN], 20);
7995 +
7996 + /* Compute the checksum of the data in the TCP packet and add it to
7997 + the TCP header checksum. */
7998 + sum = uip_chksum((u16_t *)uip_appdata,
7999 + (u16_t)(((((u16_t)(BUF->len[0]) << 8) + BUF->len[1]) - 40)));
8000 +
8001 + if((sum += hsum) < hsum) {
8002 + ++sum;
8003 + }
8004 +
8005 + if((sum += BUF->srcipaddr[0]) < BUF->srcipaddr[0]) {
8006 + ++sum;
8007 + }
8008 + if((sum += BUF->srcipaddr[1]) < BUF->srcipaddr[1]) {
8009 + ++sum;
8010 + }
8011 + if((sum += BUF->destipaddr[0]) < BUF->destipaddr[0]) {
8012 + ++sum;
8013 + }
8014 + if((sum += BUF->destipaddr[1]) < BUF->destipaddr[1]) {
8015 + ++sum;
8016 + }
8017 + if((sum += (u16_t)htons((u16_t)IP_PROTO_TCP)) < (u16_t)htons((u16_t)IP_PROTO_TCP)) {
8018 + ++sum;
8019 + }
8020 +
8021 + hsum = (u16_t)htons((((u16_t)(BUF->len[0]) << 8) + BUF->len[1]) - 20);
8022 +
8023 + if((sum += hsum) < hsum) {
8024 + ++sum;
8025 + }
8026 +
8027 + return sum;
8028 +}
8029 +/*-----------------------------------------------------------------------------------*/
8030 --- /dev/null
8031 +++ b/net/uip-0.9/uip_arch.h
8032 @@ -0,0 +1,130 @@
8033 +/**
8034 + * \defgroup uiparch Architecture specific uIP functions
8035 + * @{
8036 + *
8037 + * The functions in the architecture specific module implement the IP
8038 + * check sum and 32-bit additions.
8039 + *
8040 + * The IP checksum calculation is the most computationally expensive
8041 + * operation in the TCP/IP stack and it therefore pays off to
8042 + * implement this in efficient assembler. The purpose of the uip-arch
8043 + * module is to let the checksum functions to be implemented in
8044 + * architecture specific assembler.
8045 + *
8046 + */
8047 +
8048 +/**
8049 + * \file
8050 + * Declarations of architecture specific functions.
8051 + * \author Adam Dunkels <adam@dunkels.com>
8052 + */
8053 +
8054 +/*
8055 + * Copyright (c) 2001, Adam Dunkels.
8056 + * All rights reserved.
8057 + *
8058 + * Redistribution and use in source and binary forms, with or without
8059 + * modification, are permitted provided that the following conditions
8060 + * are met:
8061 + * 1. Redistributions of source code must retain the above copyright
8062 + * notice, this list of conditions and the following disclaimer.
8063 + * 2. Redistributions in binary form must reproduce the above copyright
8064 + * notice, this list of conditions and the following disclaimer in the
8065 + * documentation and/or other materials provided with the distribution.
8066 + * 3. The name of the author may not be used to endorse or promote
8067 + * products derived from this software without specific prior
8068 + * written permission.
8069 + *
8070 + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
8071 + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
8072 + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
8073 + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
8074 + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
8075 + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
8076 + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
8077 + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
8078 + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
8079 + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
8080 + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
8081 + *
8082 + * This file is part of the uIP TCP/IP stack.
8083 + *
8084 + * $Id: uip_arch.h,v 1.1.2.2 2003/10/06 15:10:22 adam Exp $
8085 + *
8086 + */
8087 +
8088 +#ifndef __UIP_ARCH_H__
8089 +#define __UIP_ARCH_H__
8090 +
8091 +#include "uip.h"
8092 +
8093 +/**
8094 + * Carry out a 32-bit addition.
8095 + *
8096 + * Because not all architectures for which uIP is intended has native
8097 + * 32-bit arithmetic, uIP uses an external C function for doing the
8098 + * required 32-bit additions in the TCP protocol processing. This
8099 + * function should add the two arguments and place the result in the
8100 + * global variable uip_acc32.
8101 + *
8102 + * \note The 32-bit integer pointed to by the op32 parameter and the
8103 + * result in the uip_acc32 variable are in network byte order (big
8104 + * endian).
8105 + *
8106 + * \param op32 A pointer to a 4-byte array representing a 32-bit
8107 + * integer in network byte order (big endian).
8108 + *
8109 + * \param op16 A 16-bit integer in host byte order.
8110 + */
8111 +void uip_add32(u8_t *op32, u16_t op16);
8112 +
8113 +/**
8114 + * Calculate the Internet checksum over a buffer.
8115 + *
8116 + * The Internet checksum is the one's complement of the one's
8117 + * complement sum of all 16-bit words in the buffer.
8118 + *
8119 + * See RFC1071.
8120 + *
8121 + * \note This function is not called in the current version of uIP,
8122 + * but future versions might make use of it.
8123 + *
8124 + * \param buf A pointer to the buffer over which the checksum is to be
8125 + * computed.
8126 + *
8127 + * \param len The length of the buffer over which the checksum is to
8128 + * be computed.
8129 + *
8130 + * \return The Internet checksum of the buffer.
8131 + */
8132 +u16_t uip_chksum(u16_t *buf, u16_t len);
8133 +
8134 +/**
8135 + * Calculate the IP header checksum of the packet header in uip_buf.
8136 + *
8137 + * The IP header checksum is the Internet checksum of the 20 bytes of
8138 + * the IP header.
8139 + *
8140 + * \return The IP header checksum of the IP header in the uip_buf
8141 + * buffer.
8142 + */
8143 +u16_t uip_ipchksum(void);
8144 +
8145 +/**
8146 + * Calculate the TCP checksum of the packet in uip_buf and uip_appdata.
8147 + *
8148 + * The TCP checksum is the Internet checksum of data contents of the
8149 + * TCP segment, and a pseudo-header as defined in RFC793.
8150 + *
8151 + * \note The uip_appdata pointer that points to the packet data may
8152 + * point anywhere in memory, so it is not possible to simply calculate
8153 + * the Internet checksum of the contents of the uip_buf buffer.
8154 + *
8155 + * \return The TCP checksum of the TCP segment in uip_buf and pointed
8156 + * to by uip_appdata.
8157 + */
8158 +u16_t uip_tcpchksum(void);
8159 +
8160 +/** @} */
8161 +
8162 +#endif /* __UIP_ARCH_H__ */
8163 --- /dev/null
8164 +++ b/net/uip-0.9/uip_arp.c
8165 @@ -0,0 +1,421 @@
8166 +/**
8167 + * \addtogroup uip
8168 + * @{
8169 + */
8170 +
8171 +/**
8172 + * \defgroup uiparp uIP Address Resolution Protocol
8173 + * @{
8174 + *
8175 + * The Address Resolution Protocol ARP is used for mapping between IP
8176 + * addresses and link level addresses such as the Ethernet MAC
8177 + * addresses. ARP uses broadcast queries to ask for the link level
8178 + * address of a known IP address and the host which is configured with
8179 + * the IP address for which the query was meant, will respond with its
8180 + * link level address.
8181 + *
8182 + * \note This ARP implementation only supports Ethernet.
8183 + */
8184 +
8185 +/**
8186 + * \file
8187 + * Implementation of the ARP Address Resolution Protocol.
8188 + * \author Adam Dunkels <adam@dunkels.com>
8189 + *
8190 + */
8191 +
8192 +/*
8193 + * Copyright (c) 2001-2003, Adam Dunkels.
8194 + * All rights reserved.
8195 + *
8196 + * Redistribution and use in source and binary forms, with or without
8197 + * modification, are permitted provided that the following conditions
8198 + * are met:
8199 + * 1. Redistributions of source code must retain the above copyright
8200 + * notice, this list of conditions and the following disclaimer.
8201 + * 2. Redistributions in binary form must reproduce the above copyright
8202 + * notice, this list of conditions and the following disclaimer in the
8203 + * documentation and/or other materials provided with the distribution.
8204 + * 3. The name of the author may not be used to endorse or promote
8205 + * products derived from this software without specific prior
8206 + * written permission.
8207 + *
8208 + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
8209 + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
8210 + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
8211 + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
8212 + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
8213 + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
8214 + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
8215 + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
8216 + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
8217 + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
8218 + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
8219 + *
8220 + * This file is part of the uIP TCP/IP stack.
8221 + *
8222 + * $Id: uip_arp.c,v 1.7.2.3 2003/10/06 22:42:30 adam Exp $
8223 + *
8224 + */
8225 +
8226 +
8227 +#include "uip_arp.h"
8228 +
8229 +struct arp_hdr {
8230 + struct uip_eth_hdr ethhdr;
8231 + u16_t hwtype;
8232 + u16_t protocol;
8233 + u8_t hwlen;
8234 + u8_t protolen;
8235 + u16_t opcode;
8236 + struct uip_eth_addr shwaddr;
8237 + u16_t sipaddr[2];
8238 + struct uip_eth_addr dhwaddr;
8239 + u16_t dipaddr[2];
8240 +};
8241 +
8242 +struct ethip_hdr {
8243 + struct uip_eth_hdr ethhdr;
8244 + /* IP header. */
8245 + u8_t vhl,
8246 + tos,
8247 + len[2],
8248 + ipid[2],
8249 + ipoffset[2],
8250 + ttl,
8251 + proto;
8252 + u16_t ipchksum;
8253 + u16_t srcipaddr[2],
8254 + destipaddr[2];
8255 +};
8256 +
8257 +#define ARP_REQUEST 1
8258 +#define ARP_REPLY 2
8259 +
8260 +#define ARP_HWTYPE_ETH 1
8261 +
8262 +struct arp_entry {
8263 + u16_t ipaddr[2];
8264 + struct uip_eth_addr ethaddr;
8265 + u8_t time;
8266 +};
8267 +
8268 +struct uip_eth_addr uip_ethaddr = {{UIP_ETHADDR0,
8269 + UIP_ETHADDR1,
8270 + UIP_ETHADDR2,
8271 + UIP_ETHADDR3,
8272 + UIP_ETHADDR4,
8273 + UIP_ETHADDR5}};
8274 +
8275 +static struct arp_entry arp_table[UIP_ARPTAB_SIZE];
8276 +static u16_t ipaddr[2];
8277 +static u8_t i, c;
8278 +
8279 +static u8_t arptime;
8280 +static u8_t tmpage;
8281 +
8282 +#define BUF ((struct arp_hdr *)&uip_buf[0])
8283 +#define IPBUF ((struct ethip_hdr *)&uip_buf[0])
8284 +/*-----------------------------------------------------------------------------------*/
8285 +/**
8286 + * Initialize the ARP module.
8287 + *
8288 + */
8289 +/*-----------------------------------------------------------------------------------*/
8290 +void
8291 +uip_arp_init(void)
8292 +{
8293 + for(i = 0; i < UIP_ARPTAB_SIZE; ++i) {
8294 + memset(arp_table[i].ipaddr, 0, 4);
8295 + }
8296 +}
8297 +/*-----------------------------------------------------------------------------------*/
8298 +/**
8299 + * Periodic ARP processing function.
8300 + *
8301 + * This function performs periodic timer processing in the ARP module
8302 + * and should be called at regular intervals. The recommended interval
8303 + * is 10 seconds between the calls.
8304 + *
8305 + */
8306 +/*-----------------------------------------------------------------------------------*/
8307 +void
8308 +uip_arp_timer(void)
8309 +{
8310 + struct arp_entry *tabptr;
8311 +
8312 + ++arptime;
8313 + for(i = 0; i < UIP_ARPTAB_SIZE; ++i) {
8314 + tabptr = &arp_table[i];
8315 + if((tabptr->ipaddr[0] | tabptr->ipaddr[1]) != 0 &&
8316 + arptime - tabptr->time >= UIP_ARP_MAXAGE) {
8317 + memset(tabptr->ipaddr, 0, 4);
8318 + }
8319 + }
8320 +
8321 +}
8322 +/*-----------------------------------------------------------------------------------*/
8323 +static void
8324 +uip_arp_update(u16_t *ipaddr, struct uip_eth_addr *ethaddr)
8325 +{
8326 + register struct arp_entry *tabptr;
8327 + /* Walk through the ARP mapping table and try to find an entry to
8328 + update. If none is found, the IP -> MAC address mapping is
8329 + inserted in the ARP table. */
8330 + for(i = 0; i < UIP_ARPTAB_SIZE; ++i) {
8331 +
8332 + tabptr = &arp_table[i];
8333 + /* Only check those entries that are actually in use. */
8334 + if(tabptr->ipaddr[0] != 0 &&
8335 + tabptr->ipaddr[1] != 0) {
8336 +
8337 + /* Check if the source IP address of the incoming packet matches
8338 + the IP address in this ARP table entry. */
8339 + if(ipaddr[0] == tabptr->ipaddr[0] &&
8340 + ipaddr[1] == tabptr->ipaddr[1]) {
8341 +
8342 + /* An old entry found, update this and return. */
8343 + memcpy(tabptr->ethaddr.addr, ethaddr->addr, 6);
8344 + tabptr->time = arptime;
8345 +
8346 + return;
8347 + }
8348 + }
8349 + }
8350 +
8351 + /* If we get here, no existing ARP table entry was found, so we
8352 + create one. */
8353 +
8354 + /* First, we try to find an unused entry in the ARP table. */
8355 + for(i = 0; i < UIP_ARPTAB_SIZE; ++i) {
8356 + tabptr = &arp_table[i];
8357 + if(tabptr->ipaddr[0] == 0 &&
8358 + tabptr->ipaddr[1] == 0) {
8359 + break;
8360 + }
8361 + }
8362 +
8363 + /* If no unused entry is found, we try to find the oldest entry and
8364 + throw it away. */
8365 + if(i == UIP_ARPTAB_SIZE) {
8366 + tmpage = 0;
8367 + c = 0;
8368 + for(i = 0; i < UIP_ARPTAB_SIZE; ++i) {
8369 + tabptr = &arp_table[i];
8370 + if(arptime - tabptr->time > tmpage) {
8371 + tmpage = arptime - tabptr->time;
8372 + c = i;
8373 + }
8374 + }
8375 + i = c;
8376 + }
8377 +
8378 + /* Now, i is the ARP table entry which we will fill with the new
8379 + information. */
8380 + memcpy(tabptr->ipaddr, ipaddr, 4);
8381 + memcpy(tabptr->ethaddr.addr, ethaddr->addr, 6);
8382 + tabptr->time = arptime;
8383 +}
8384 +/*-----------------------------------------------------------------------------------*/
8385 +/**
8386 + * ARP processing for incoming IP packets
8387 + *
8388 + * This function should be called by the device driver when an IP
8389 + * packet has been received. The function will check if the address is
8390 + * in the ARP cache, and if so the ARP cache entry will be
8391 + * refreshed. If no ARP cache entry was found, a new one is created.
8392 + *
8393 + * This function expects an IP packet with a prepended Ethernet header
8394 + * in the uip_buf[] buffer, and the length of the packet in the global
8395 + * variable uip_len.
8396 + */
8397 +/*-----------------------------------------------------------------------------------*/
8398 +void
8399 +uip_arp_ipin(void)
8400 +{
8401 + uip_len -= sizeof(struct uip_eth_hdr);
8402 +
8403 + /* Only insert/update an entry if the source IP address of the
8404 + incoming IP packet comes from a host on the local network. */
8405 + if((IPBUF->srcipaddr[0] & uip_arp_netmask[0]) !=
8406 + (uip_hostaddr[0] & uip_arp_netmask[0])) {
8407 + return;
8408 + }
8409 + if((IPBUF->srcipaddr[1] & uip_arp_netmask[1]) !=
8410 + (uip_hostaddr[1] & uip_arp_netmask[1])) {
8411 + return;
8412 + }
8413 + uip_arp_update(IPBUF->srcipaddr, &(IPBUF->ethhdr.src));
8414 +
8415 + return;
8416 +}
8417 +/*-----------------------------------------------------------------------------------*/
8418 +/**
8419 + * ARP processing for incoming ARP packets.
8420 + *
8421 + * This function should be called by the device driver when an ARP
8422 + * packet has been received. The function will act differently
8423 + * depending on the ARP packet type: if it is a reply for a request
8424 + * that we previously sent out, the ARP cache will be filled in with
8425 + * the values from the ARP reply. If the incoming ARP packet is an ARP
8426 + * request for our IP address, an ARP reply packet is created and put
8427 + * into the uip_buf[] buffer.
8428 + *
8429 + * When the function returns, the value of the global variable uip_len
8430 + * indicates whether the device driver should send out a packet or
8431 + * not. If uip_len is zero, no packet should be sent. If uip_len is
8432 + * non-zero, it contains the length of the outbound packet that is
8433 + * present in the uip_buf[] buffer.
8434 + *
8435 + * This function expects an ARP packet with a prepended Ethernet
8436 + * header in the uip_buf[] buffer, and the length of the packet in the
8437 + * global variable uip_len.
8438 + */
8439 +/*-----------------------------------------------------------------------------------*/
8440 +void
8441 +uip_arp_arpin(void)
8442 +{
8443 +
8444 + if(uip_len < sizeof(struct arp_hdr)) {
8445 + uip_len = 0;
8446 + return;
8447 + }
8448 +
8449 + uip_len = 0;
8450 +
8451 + switch(BUF->opcode) {
8452 + case HTONS(ARP_REQUEST):
8453 + /* ARP request. If it asked for our address, we send out a
8454 + reply. */
8455 + if(BUF->dipaddr[0] == uip_hostaddr[0] &&
8456 + BUF->dipaddr[1] == uip_hostaddr[1]) {
8457 + /* The reply opcode is 2. */
8458 + BUF->opcode = HTONS(2);
8459 +
8460 + memcpy(BUF->dhwaddr.addr, BUF->shwaddr.addr, 6);
8461 + memcpy(BUF->shwaddr.addr, uip_ethaddr.addr, 6);
8462 + memcpy(BUF->ethhdr.src.addr, uip_ethaddr.addr, 6);
8463 + memcpy(BUF->ethhdr.dest.addr, BUF->dhwaddr.addr, 6);
8464 +
8465 + BUF->dipaddr[0] = BUF->sipaddr[0];
8466 + BUF->dipaddr[1] = BUF->sipaddr[1];
8467 + BUF->sipaddr[0] = uip_hostaddr[0];
8468 + BUF->sipaddr[1] = uip_hostaddr[1];
8469 +
8470 + BUF->ethhdr.type = HTONS(UIP_ETHTYPE_ARP);
8471 + uip_len = sizeof(struct arp_hdr);
8472 + }
8473 + break;
8474 + case HTONS(ARP_REPLY):
8475 + /* ARP reply. We insert or update the ARP table if it was meant
8476 + for us. */
8477 + if(BUF->dipaddr[0] == uip_hostaddr[0] &&
8478 + BUF->dipaddr[1] == uip_hostaddr[1]) {
8479 +
8480 + uip_arp_update(BUF->sipaddr, &BUF->shwaddr);
8481 + }
8482 + break;
8483 + }
8484 +
8485 + return;
8486 +}
8487 +/*-----------------------------------------------------------------------------------*/
8488 +/**
8489 + * Prepend Ethernet header to an outbound IP packet and see if we need
8490 + * to send out an ARP request.
8491 + *
8492 + * This function should be called before sending out an IP packet. The
8493 + * function checks the destination IP address of the IP packet to see
8494 + * what Ethernet MAC address that should be used as a destination MAC
8495 + * address on the Ethernet.
8496 + *
8497 + * If the destination IP address is in the local network (determined
8498 + * by logical ANDing of netmask and our IP address), the function
8499 + * checks the ARP cache to see if an entry for the destination IP
8500 + * address is found. If so, an Ethernet header is prepended and the
8501 + * function returns. If no ARP cache entry is found for the
8502 + * destination IP address, the packet in the uip_buf[] is replaced by
8503 + * an ARP request packet for the IP address. The IP packet is dropped
8504 + * and it is assumed that they higher level protocols (e.g., TCP)
8505 + * eventually will retransmit the dropped packet.
8506 + *
8507 + * If the destination IP address is not on the local network, the IP
8508 + * address of the default router is used instead.
8509 + *
8510 + * When the function returns, a packet is present in the uip_buf[]
8511 + * buffer, and the length of the packet is in the global variable
8512 + * uip_len.
8513 + */
8514 +/*-----------------------------------------------------------------------------------*/
8515 +void
8516 +uip_arp_out(void)
8517 +{
8518 + struct arp_entry *tabptr;
8519 + /* Find the destination IP address in the ARP table and construct
8520 + the Ethernet header. If the destination IP addres isn't on the
8521 + local network, we use the default router's IP address instead.
8522 +
8523 + If not ARP table entry is found, we overwrite the original IP
8524 + packet with an ARP request for the IP address. */
8525 +
8526 + /* Check if the destination address is on the local network. */
8527 + if((IPBUF->destipaddr[0] & uip_arp_netmask[0]) !=
8528 + (uip_hostaddr[0] & uip_arp_netmask[0]) ||
8529 + (IPBUF->destipaddr[1] & uip_arp_netmask[1]) !=
8530 + (uip_hostaddr[1] & uip_arp_netmask[1])) {
8531 + /* Destination address was not on the local network, so we need to
8532 + use the default router's IP address instead of the destination
8533 + address when determining the MAC address. */
8534 + ipaddr[0] = uip_arp_draddr[0];
8535 + ipaddr[1] = uip_arp_draddr[1];
8536 + } else {
8537 + /* Else, we use the destination IP address. */
8538 + ipaddr[0] = IPBUF->destipaddr[0];
8539 + ipaddr[1] = IPBUF->destipaddr[1];
8540 + }
8541 +
8542 + for(i = 0; i < UIP_ARPTAB_SIZE; ++i) {
8543 + tabptr = &arp_table[i];
8544 + if(ipaddr[0] == tabptr->ipaddr[0] &&
8545 + ipaddr[1] == tabptr->ipaddr[1])
8546 + break;
8547 + }
8548 +
8549 + if(i == UIP_ARPTAB_SIZE) {
8550 + /* The destination address was not in our ARP table, so we
8551 + overwrite the IP packet with an ARP request. */
8552 +
8553 + memset(BUF->ethhdr.dest.addr, 0xff, 6);
8554 + memset(BUF->dhwaddr.addr, 0x00, 6);
8555 + memcpy(BUF->ethhdr.src.addr, uip_ethaddr.addr, 6);
8556 + memcpy(BUF->shwaddr.addr, uip_ethaddr.addr, 6);
8557 +
8558 + BUF->dipaddr[0] = ipaddr[0];
8559 + BUF->dipaddr[1] = ipaddr[1];
8560 + BUF->sipaddr[0] = uip_hostaddr[0];
8561 + BUF->sipaddr[1] = uip_hostaddr[1];
8562 + BUF->opcode = HTONS(ARP_REQUEST); /* ARP request. */
8563 + BUF->hwtype = HTONS(ARP_HWTYPE_ETH);
8564 + BUF->protocol = HTONS(UIP_ETHTYPE_IP);
8565 + BUF->hwlen = 6;
8566 + BUF->protolen = 4;
8567 + BUF->ethhdr.type = HTONS(UIP_ETHTYPE_ARP);
8568 +
8569 + uip_appdata = &uip_buf[40 + UIP_LLH_LEN];
8570 +
8571 + uip_len = sizeof(struct arp_hdr);
8572 + return;
8573 + }
8574 +
8575 + /* Build an ethernet header. */
8576 + memcpy(IPBUF->ethhdr.dest.addr, tabptr->ethaddr.addr, 6);
8577 + memcpy(IPBUF->ethhdr.src.addr, uip_ethaddr.addr, 6);
8578 +
8579 + IPBUF->ethhdr.type = HTONS(UIP_ETHTYPE_IP);
8580 +
8581 + uip_len += sizeof(struct uip_eth_hdr);
8582 +}
8583 +/*-----------------------------------------------------------------------------------*/
8584 +
8585 +/** @} */
8586 +/** @} */
8587 --- /dev/null
8588 +++ b/net/uip-0.9/uip_arp.h
8589 @@ -0,0 +1,201 @@
8590 +/**
8591 + * \addtogroup uip
8592 + * @{
8593 + */
8594 +
8595 +/**
8596 + * \addtogroup uiparp
8597 + * @{
8598 + */
8599 +
8600 +/**
8601 + * \file
8602 + * Macros and definitions for the ARP module.
8603 + * \author Adam Dunkels <adam@dunkels.com>
8604 + */
8605 +
8606 +
8607 +/*
8608 + * Copyright (c) 2001-2003, Adam Dunkels.
8609 + * All rights reserved.
8610 + *
8611 + * Redistribution and use in source and binary forms, with or without
8612 + * modification, are permitted provided that the following conditions
8613 + * are met:
8614 + * 1. Redistributions of source code must retain the above copyright
8615 + * notice, this list of conditions and the following disclaimer.
8616 + * 2. Redistributions in binary form must reproduce the above copyright
8617 + * notice, this list of conditions and the following disclaimer in the
8618 + * documentation and/or other materials provided with the distribution.
8619 + * 3. The name of the author may not be used to endorse or promote
8620 + * products derived from this software without specific prior
8621 + * written permission.
8622 + *
8623 + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
8624 + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
8625 + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
8626 + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
8627 + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
8628 + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
8629 + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
8630 + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
8631 + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
8632 + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
8633 + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
8634 + *
8635 + * This file is part of the uIP TCP/IP stack.
8636 + *
8637 + * $Id: uip_arp.h,v 1.3.2.2 2003/10/06 15:10:22 adam Exp $
8638 + *
8639 + */
8640 +
8641 +#ifndef __UIP_ARP_H__
8642 +#define __UIP_ARP_H__
8643 +
8644 +#include "uip.h"
8645 +
8646 +
8647 +/**
8648 + * Representation of a 48-bit Ethernet address.
8649 + */
8650 +struct uip_eth_addr {
8651 + u8_t addr[6];
8652 +};
8653 +
8654 +extern struct uip_eth_addr uip_ethaddr;
8655 +
8656 +/**
8657 + * The Ethernet header.
8658 + */
8659 +struct uip_eth_hdr {
8660 + struct uip_eth_addr dest;
8661 + struct uip_eth_addr src;
8662 + u16_t type;
8663 +};
8664 +
8665 +#define UIP_ETHTYPE_ARP 0x0806
8666 +#define UIP_ETHTYPE_IP 0x0800
8667 +#define UIP_ETHTYPE_IP6 0x86dd
8668 +
8669 +
8670 +/* The uip_arp_init() function must be called before any of the other
8671 + ARP functions. */
8672 +void uip_arp_init(void);
8673 +
8674 +/* The uip_arp_ipin() function should be called whenever an IP packet
8675 + arrives from the Ethernet. This function refreshes the ARP table or
8676 + inserts a new mapping if none exists. The function assumes that an
8677 + IP packet with an Ethernet header is present in the uip_buf buffer
8678 + and that the length of the packet is in the uip_len variable. */
8679 +void uip_arp_ipin(void);
8680 +
8681 +/* The uip_arp_arpin() should be called when an ARP packet is received
8682 + by the Ethernet driver. This function also assumes that the
8683 + Ethernet frame is present in the uip_buf buffer. When the
8684 + uip_arp_arpin() function returns, the contents of the uip_buf
8685 + buffer should be sent out on the Ethernet if the uip_len variable
8686 + is > 0. */
8687 +void uip_arp_arpin(void);
8688 +
8689 +/* The uip_arp_out() function should be called when an IP packet
8690 + should be sent out on the Ethernet. This function creates an
8691 + Ethernet header before the IP header in the uip_buf buffer. The
8692 + Ethernet header will have the correct Ethernet MAC destination
8693 + address filled in if an ARP table entry for the destination IP
8694 + address (or the IP address of the default router) is present. If no
8695 + such table entry is found, the IP packet is overwritten with an ARP
8696 + request and we rely on TCP to retransmit the packet that was
8697 + overwritten. In any case, the uip_len variable holds the length of
8698 + the Ethernet frame that should be transmitted. */
8699 +void uip_arp_out(void);
8700 +
8701 +/* The uip_arp_timer() function should be called every ten seconds. It
8702 + is responsible for flushing old entries in the ARP table. */
8703 +void uip_arp_timer(void);
8704 +
8705 +/** @} */
8706 +
8707 +/**
8708 + * \addtogroup uipconffunc
8709 + * @{
8710 + */
8711 +
8712 +/**
8713 + * Set the default router's IP address.
8714 + *
8715 + * \param addr A pointer to a 4-byte array containing the IP address
8716 + * of the default router.
8717 + *
8718 + * \hideinitializer
8719 + */
8720 +#define uip_setdraddr(addr) do { uip_arp_draddr[0] = addr[0]; \
8721 + uip_arp_draddr[1] = addr[1]; } while(0)
8722 +
8723 +/**
8724 + * Set the netmask.
8725 + *
8726 + * \param addr A pointer to a 4-byte array containing the IP address
8727 + * of the netmask.
8728 + *
8729 + * \hideinitializer
8730 + */
8731 +#define uip_setnetmask(addr) do { uip_arp_netmask[0] = addr[0]; \
8732 + uip_arp_netmask[1] = addr[1]; } while(0)
8733 +
8734 +
8735 +/**
8736 + * Get the default router's IP address.
8737 + *
8738 + * \param addr A pointer to a 4-byte array that will be filled in with
8739 + * the IP address of the default router.
8740 + *
8741 + * \hideinitializer
8742 + */
8743 +#define uip_getdraddr(addr) do { addr[0] = uip_arp_draddr[0]; \
8744 + addr[1] = uip_arp_draddr[1]; } while(0)
8745 +
8746 +/**
8747 + * Get the netmask.
8748 + *
8749 + * \param addr A pointer to a 4-byte array that will be filled in with
8750 + * the value of the netmask.
8751 + *
8752 + * \hideinitializer
8753 + */
8754 +#define uip_getnetmask(addr) do { addr[0] = uip_arp_netmask[0]; \
8755 + addr[1] = uip_arp_netmask[1]; } while(0)
8756 +
8757 +
8758 +/**
8759 + * Specifiy the Ethernet MAC address.
8760 + *
8761 + * The ARP code needs to know the MAC address of the Ethernet card in
8762 + * order to be able to respond to ARP queries and to generate working
8763 + * Ethernet headers.
8764 + *
8765 + * \note This macro only specifies the Ethernet MAC address to the ARP
8766 + * code. It cannot be used to change the MAC address of the Ethernet
8767 + * card.
8768 + *
8769 + * \param eaddr A pointer to a struct uip_eth_addr containing the
8770 + * Ethernet MAC address of the Ethernet card.
8771 + *
8772 + * \hideinitializer
8773 + */
8774 +#define uip_setethaddr(eaddr) do {uip_ethaddr.addr[0] = eaddr.addr[0]; \
8775 + uip_ethaddr.addr[1] = eaddr.addr[1];\
8776 + uip_ethaddr.addr[2] = eaddr.addr[2];\
8777 + uip_ethaddr.addr[3] = eaddr.addr[3];\
8778 + uip_ethaddr.addr[4] = eaddr.addr[4];\
8779 + uip_ethaddr.addr[5] = eaddr.addr[5];} while(0)
8780 +
8781 +/** @} */
8782 +
8783 +/**
8784 + * \internal Internal variables that are set using the macros
8785 + * uip_setdraddr and uip_setnetmask.
8786 + */
8787 +extern u16_t uip_arp_draddr[2], uip_arp_netmask[2];
8788 +#endif /* __UIP_ARP_H__ */
8789 +
8790 +
8791 --- /dev/null
8792 +++ b/net/uip-0.9/uipopt.h
8793 @@ -0,0 +1,557 @@
8794 +/**
8795 + * \defgroup uipopt Configuration options for uIP
8796 + * @{
8797 + *
8798 + * uIP is configured using the per-project configuration file
8799 + * "uipopt.h". This file contains all compile-time options for uIP and
8800 + * should be tweaked to match each specific project. The uIP
8801 + * distribution contains a documented example "uipopt.h" that can be
8802 + * copied and modified for each project.
8803 + */
8804 +
8805 +/**
8806 + * \file
8807 + * Configuration options for uIP.
8808 + * \author Adam Dunkels <adam@dunkels.com>
8809 + *
8810 + * This file is used for tweaking various configuration options for
8811 + * uIP. You should make a copy of this file into one of your project's
8812 + * directories instead of editing this example "uipopt.h" file that
8813 + * comes with the uIP distribution.
8814 + */
8815 +
8816 +/*
8817 + * Copyright (c) 2001-2003, Adam Dunkels.
8818 + * All rights reserved.
8819 + *
8820 + * Redistribution and use in source and binary forms, with or without
8821 + * modification, are permitted provided that the following conditions
8822 + * are met:
8823 + * 1. Redistributions of source code must retain the above copyright
8824 + * notice, this list of conditions and the following disclaimer.
8825 + * 2. Redistributions in binary form must reproduce the above copyright
8826 + * notice, this list of conditions and the following disclaimer in the
8827 + * documentation and/or other materials provided with the distribution.
8828 + * 3. The name of the author may not be used to endorse or promote
8829 + * products derived from this software without specific prior
8830 + * written permission.
8831 + *
8832 + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
8833 + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
8834 + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
8835 + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
8836 + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
8837 + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
8838 + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
8839 + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
8840 + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
8841 + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
8842 + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
8843 + *
8844 + * This file is part of the uIP TCP/IP stack.
8845 + *
8846 + * $Id: uipopt.h,v 1.16.2.5 2003/10/07 13:22:51 adam Exp $
8847 + *
8848 + */
8849 +
8850 +#ifndef __UIPOPT_H__
8851 +#define __UIPOPT_H__
8852 +
8853 +/*------------------------------------------------------------------------------*/
8854 +/**
8855 + * \defgroup uipopttypedef uIP type definitions
8856 + * @{
8857 + */
8858 +
8859 +/**
8860 + * The 8-bit unsigned data type.
8861 + *
8862 + * This may have to be tweaked for your particular compiler. "unsigned
8863 + * char" works for most compilers.
8864 + */
8865 +typedef unsigned char u8_t;
8866 +
8867 +/**
8868 + * The 16-bit unsigned data type.
8869 + *
8870 + * This may have to be tweaked for your particular compiler. "unsigned
8871 + * short" works for most compilers.
8872 + */
8873 +typedef unsigned short u16_t;
8874 +
8875 +/**
8876 + * The statistics data type.
8877 + *
8878 + * This datatype determines how high the statistics counters are able
8879 + * to count.
8880 + */
8881 +typedef unsigned short uip_stats_t;
8882 +
8883 +/** @} */
8884 +
8885 +/*------------------------------------------------------------------------------*/
8886 +
8887 +/**
8888 + * \defgroup uipoptstaticconf Static configuration options
8889 + * @{
8890 + *
8891 + * These configuration options can be used for setting the IP address
8892 + * settings statically, but only if UIP_FIXEDADDR is set to 1. The
8893 + * configuration options for a specific node includes IP address,
8894 + * netmask and default router as well as the Ethernet address. The
8895 + * netmask, default router and Ethernet address are appliciable only
8896 + * if uIP should be run over Ethernet.
8897 + *
8898 + * All of these should be changed to suit your project.
8899 +*/
8900 +
8901 +/**
8902 + * Determines if uIP should use a fixed IP address or not.
8903 + *
8904 + * If uIP should use a fixed IP address, the settings are set in the
8905 + * uipopt.h file. If not, the macros uip_sethostaddr(),
8906 + * uip_setdraddr() and uip_setnetmask() should be used instead.
8907 + *
8908 + * \hideinitializer
8909 + */
8910 +#define UIP_FIXEDADDR 0
8911 +
8912 +/**
8913 + * Ping IP address asignment.
8914 + *
8915 + * uIP uses a "ping" packets for setting its own IP address if this
8916 + * option is set. If so, uIP will start with an empty IP address and
8917 + * the destination IP address of the first incoming "ping" (ICMP echo)
8918 + * packet will be used for setting the hosts IP address.
8919 + *
8920 + * \note This works only if UIP_FIXEDADDR is 0.
8921 + *
8922 + * \hideinitializer
8923 + */
8924 +#define UIP_PINGADDRCONF 0
8925 +
8926 +#define UIP_IPADDR0 192 /**< The first octet of the IP address of
8927 + this uIP node, if UIP_FIXEDADDR is
8928 + 1. \hideinitializer */
8929 +#define UIP_IPADDR1 168 /**< The second octet of the IP address of
8930 + this uIP node, if UIP_FIXEDADDR is
8931 + 1. \hideinitializer */
8932 +#define UIP_IPADDR2 0 /**< The third octet of the IP address of
8933 + this uIP node, if UIP_FIXEDADDR is
8934 + 1. \hideinitializer */
8935 +#define UIP_IPADDR3 250 /**< The fourth octet of the IP address of
8936 + this uIP node, if UIP_FIXEDADDR is
8937 + 1. \hideinitializer */
8938 +
8939 +#define UIP_NETMASK0 255 /**< The first octet of the netmask of
8940 + this uIP node, if UIP_FIXEDADDR is
8941 + 1. \hideinitializer */
8942 +#define UIP_NETMASK1 255 /**< The second octet of the netmask of
8943 + this uIP node, if UIP_FIXEDADDR is
8944 + 1. \hideinitializer */
8945 +#define UIP_NETMASK2 255 /**< The third octet of the netmask of
8946 + this uIP node, if UIP_FIXEDADDR is
8947 + 1. \hideinitializer */
8948 +#define UIP_NETMASK3 0 /**< The fourth octet of the netmask of
8949 + this uIP node, if UIP_FIXEDADDR is
8950 + 1. \hideinitializer */
8951 +
8952 +#define UIP_DRIPADDR0 192 /**< The first octet of the IP address of
8953 + the default router, if UIP_FIXEDADDR is
8954 + 1. \hideinitializer */
8955 +#define UIP_DRIPADDR1 168 /**< The second octet of the IP address of
8956 + the default router, if UIP_FIXEDADDR is
8957 + 1. \hideinitializer */
8958 +#define UIP_DRIPADDR2 0 /**< The third octet of the IP address of
8959 + the default router, if UIP_FIXEDADDR is
8960 + 1. \hideinitializer */
8961 +#define UIP_DRIPADDR3 1 /**< The fourth octet of the IP address of
8962 + the default router, if UIP_FIXEDADDR is
8963 + 1. \hideinitializer */
8964 +
8965 +/**
8966 + * Specifies if the uIP ARP module should be compiled with a fixed
8967 + * Ethernet MAC address or not.
8968 + *
8969 + * If this configuration option is 0, the macro uip_setethaddr() can
8970 + * be used to specify the Ethernet address at run-time.
8971 + *
8972 + * \hideinitializer
8973 + */
8974 +#define UIP_FIXEDETHADDR 0
8975 +
8976 +#define UIP_ETHADDR0 0x00 /**< The first octet of the Ethernet
8977 + address if UIP_FIXEDETHADDR is
8978 + 1. \hideinitializer */
8979 +#define UIP_ETHADDR1 0xbd /**< The second octet of the Ethernet
8980 + address if UIP_FIXEDETHADDR is
8981 + 1. \hideinitializer */
8982 +#define UIP_ETHADDR2 0x3b /**< The third octet of the Ethernet
8983 + address if UIP_FIXEDETHADDR is
8984 + 1. \hideinitializer */
8985 +#define UIP_ETHADDR3 0x33 /**< The fourth octet of the Ethernet
8986 + address if UIP_FIXEDETHADDR is
8987 + 1. \hideinitializer */
8988 +#define UIP_ETHADDR4 0x05 /**< The fifth octet of the Ethernet
8989 + address if UIP_FIXEDETHADDR is
8990 + 1. \hideinitializer */
8991 +#define UIP_ETHADDR5 0x71 /**< The sixth octet of the Ethernet
8992 + address if UIP_FIXEDETHADDR is
8993 + 1. \hideinitializer */
8994 +
8995 +/** @} */
8996 +/*------------------------------------------------------------------------------*/
8997 +/**
8998 + * \defgroup uipoptip IP configuration options
8999 + * @{
9000 + *
9001 + */
9002 +/**
9003 + * The IP TTL (time to live) of IP packets sent by uIP.
9004 + *
9005 + * This should normally not be changed.
9006 + */
9007 +#define UIP_TTL 255
9008 +
9009 +/**
9010 + * Turn on support for IP packet reassembly.
9011 + *
9012 + * uIP supports reassembly of fragmented IP packets. This features
9013 + * requires an additonal amount of RAM to hold the reassembly buffer
9014 + * and the reassembly code size is approximately 700 bytes. The
9015 + * reassembly buffer is of the same size as the uip_buf buffer
9016 + * (configured by UIP_BUFSIZE).
9017 + *
9018 + * \note IP packet reassembly is not heavily tested.
9019 + *
9020 + * \hideinitializer
9021 + */
9022 +#define UIP_REASSEMBLY 0
9023 +
9024 +/**
9025 + * The maximum time an IP fragment should wait in the reassembly
9026 + * buffer before it is dropped.
9027 + *
9028 + */
9029 +#define UIP_REASS_MAXAGE 40
9030 +
9031 +/** @} */
9032 +
9033 +/*------------------------------------------------------------------------------*/
9034 +/**
9035 + * \defgroup uipoptudp UDP configuration options
9036 + * @{
9037 + *
9038 + * \note The UDP support in uIP is still not entirely complete; there
9039 + * is no support for sending or receiving broadcast or multicast
9040 + * packets, but it works well enough to support a number of vital
9041 + * applications such as DNS queries, though
9042 + */
9043 +
9044 +/**
9045 + * Toggles wether UDP support should be compiled in or not.
9046 + *
9047 + * \hideinitializer
9048 + */
9049 +#define UIP_UDP 0
9050 +
9051 +/**
9052 + * Toggles if UDP checksums should be used or not.
9053 + *
9054 + * \note Support for UDP checksums is currently not included in uIP,
9055 + * so this option has no function.
9056 + *
9057 + * \hideinitializer
9058 + */
9059 +#define UIP_UDP_CHECKSUMS 0
9060 +
9061 +/**
9062 + * The maximum amount of concurrent UDP connections.
9063 + *
9064 + * \hideinitializer
9065 + */
9066 +#define UIP_UDP_CONNS 10
9067 +
9068 +/**
9069 + * The name of the function that should be called when UDP datagrams arrive.
9070 + *
9071 + * \hideinitializer
9072 + */
9073 +#define UIP_UDP_APPCALL udp_appcall
9074 +
9075 +/** @} */
9076 +/*------------------------------------------------------------------------------*/
9077 +/**
9078 + * \defgroup uipopttcp TCP configuration options
9079 + * @{
9080 + */
9081 +
9082 +/**
9083 + * Determines if support for opening connections from uIP should be
9084 + * compiled in.
9085 + *
9086 + * If the applications that are running on top of uIP for this project
9087 + * do not need to open outgoing TCP connections, this configration
9088 + * option can be turned off to reduce the code size of uIP.
9089 + *
9090 + * \hideinitializer
9091 + */
9092 +#define UIP_ACTIVE_OPEN 1
9093 +
9094 +/**
9095 + * The maximum number of simultaneously open TCP connections.
9096 + *
9097 + * Since the TCP connections are statically allocated, turning this
9098 + * configuration knob down results in less RAM used. Each TCP
9099 + * connection requires approximatly 30 bytes of memory.
9100 + *
9101 + * \hideinitializer
9102 + */
9103 +#define UIP_CONNS 10
9104 +
9105 +/**
9106 + * The maximum number of simultaneously listening TCP ports.
9107 + *
9108 + * Each listening TCP port requires 2 bytes of memory.
9109 + *
9110 + * \hideinitializer
9111 + */
9112 +#define UIP_LISTENPORTS 10
9113 +
9114 +/**
9115 + * The size of the advertised receiver's window.
9116 + *
9117 + * Should be set low (i.e., to the size of the uip_buf buffer) is the
9118 + * application is slow to process incoming data, or high (32768 bytes)
9119 + * if the application processes data quickly.
9120 + *
9121 + * \hideinitializer
9122 + */
9123 +#define UIP_RECEIVE_WINDOW 32768
9124 +
9125 +/**
9126 + * Determines if support for TCP urgent data notification should be
9127 + * compiled in.
9128 + *
9129 + * Urgent data (out-of-band data) is a rarely used TCP feature that
9130 + * very seldom would be required.
9131 + *
9132 + * \hideinitializer
9133 + */
9134 +#define UIP_URGDATA 1
9135 +
9136 +/**
9137 + * The initial retransmission timeout counted in timer pulses.
9138 + *
9139 + * This should not be changed.
9140 + */
9141 +#define UIP_RTO 3
9142 +
9143 +/**
9144 + * The maximum number of times a segment should be retransmitted
9145 + * before the connection should be aborted.
9146 + *
9147 + * This should not be changed.
9148 + */
9149 +#define UIP_MAXRTX 8
9150 +
9151 +/**
9152 + * The maximum number of times a SYN segment should be retransmitted
9153 + * before a connection request should be deemed to have been
9154 + * unsuccessful.
9155 + *
9156 + * This should not need to be changed.
9157 + */
9158 +#define UIP_MAXSYNRTX 3
9159 +
9160 +/**
9161 + * The TCP maximum segment size.
9162 + *
9163 + * This is should not be to set to more than UIP_BUFSIZE - UIP_LLH_LEN - 40.
9164 + */
9165 +#define UIP_TCP_MSS (UIP_BUFSIZE - UIP_LLH_LEN - 40)
9166 +
9167 +/**
9168 + * How long a connection should stay in the TIME_WAIT state.
9169 + *
9170 + * This configiration option has no real implication, and it should be
9171 + * left untouched.
9172 + */
9173 +#define UIP_TIME_WAIT_TIMEOUT 120
9174 +
9175 +
9176 +/** @} */
9177 +/*------------------------------------------------------------------------------*/
9178 +/**
9179 + * \defgroup uipoptarp ARP configuration options
9180 + * @{
9181 + */
9182 +
9183 +/**
9184 + * The size of the ARP table.
9185 + *
9186 + * This option should be set to a larger value if this uIP node will
9187 + * have many connections from the local network.
9188 + *
9189 + * \hideinitializer
9190 + */
9191 +#define UIP_ARPTAB_SIZE 8
9192 +
9193 +/**
9194 + * The maxium age of ARP table entries measured in 10ths of seconds.
9195 + *
9196 + * An UIP_ARP_MAXAGE of 120 corresponds to 20 minutes (BSD
9197 + * default).
9198 + */
9199 +#define UIP_ARP_MAXAGE 120
9200 +
9201 +/** @} */
9202 +
9203 +/*------------------------------------------------------------------------------*/
9204 +
9205 +/**
9206 + * \defgroup uipoptgeneral General configuration options
9207 + * @{
9208 + */
9209 +
9210 +/**
9211 + * The size of the uIP packet buffer.
9212 + *
9213 + * The uIP packet buffer should not be smaller than 60 bytes, and does
9214 + * not need to be larger than 1500 bytes. Lower size results in lower
9215 + * TCP throughput, larger size results in higher TCP throughput.
9216 + *
9217 + * \hideinitializer
9218 + */
9219 +#define UIP_BUFSIZE 1500
9220 +
9221 +
9222 +/**
9223 + * Determines if statistics support should be compiled in.
9224 + *
9225 + * The statistics is useful for debugging and to show the user.
9226 + *
9227 + * \hideinitializer
9228 + */
9229 +#define UIP_STATISTICS 1
9230 +
9231 +/**
9232 + * Determines if logging of certain events should be compiled in.
9233 + *
9234 + * This is useful mostly for debugging. The function uip_log()
9235 + * must be implemented to suit the architecture of the project, if
9236 + * logging is turned on.
9237 + *
9238 + * \hideinitializer
9239 + */
9240 +#define UIP_LOGGING 0
9241 +
9242 +/**
9243 + * Print out a uIP log message.
9244 + *
9245 + * This function must be implemented by the module that uses uIP, and
9246 + * is called by uIP whenever a log message is generated.
9247 + */
9248 +void uip_log(char *msg);
9249 +
9250 +/**
9251 + * The link level header length.
9252 + *
9253 + * This is the offset into the uip_buf where the IP header can be
9254 + * found. For Ethernet, this should be set to 14. For SLIP, this
9255 + * should be set to 0.
9256 + *
9257 + * \hideinitializer
9258 + */
9259 +#define UIP_LLH_LEN 14
9260 +
9261 +
9262 +/** @} */
9263 +/*------------------------------------------------------------------------------*/
9264 +/**
9265 + * \defgroup uipoptcpu CPU architecture configuration
9266 + * @{
9267 + *
9268 + * The CPU architecture configuration is where the endianess of the
9269 + * CPU on which uIP is to be run is specified. Most CPUs today are
9270 + * little endian, and the most notable exception are the Motorolas
9271 + * which are big endian. The BYTE_ORDER macro should be changed to
9272 + * reflect the CPU architecture on which uIP is to be run.
9273 + */
9274 +#ifndef LITTLE_ENDIAN
9275 +#define LITTLE_ENDIAN 3412
9276 +#endif /* LITTLE_ENDIAN */
9277 +#ifndef BIG_ENDIAN
9278 +#define BIG_ENDIAN 1234
9279 +#endif /* BIGE_ENDIAN */
9280 +
9281 +/**
9282 + * The byte order of the CPU architecture on which uIP is to be run.
9283 + *
9284 + * This option can be either BIG_ENDIAN (Motorola byte order) or
9285 + * LITTLE_ENDIAN (Intel byte order).
9286 + *
9287 + * \hideinitializer
9288 + */
9289 +/*#ifndef BYTE_ORDER*/
9290 +#define BYTE_ORDER BIG_ENDIAN
9291 +/*#endif*/ /* BYTE_ORDER */
9292 +
9293 +/** @} */
9294 +/*------------------------------------------------------------------------------*/
9295 +
9296 +/**
9297 + * \defgroup uipoptapp Appication specific configurations
9298 + * @{
9299 + *
9300 + * An uIP application is implemented using a single application
9301 + * function that is called by uIP whenever a TCP/IP event occurs. The
9302 + * name of this function must be registered with uIP at compile time
9303 + * using the UIP_APPCALL definition.
9304 + *
9305 + * uIP applications can store the application state within the
9306 + * uip_conn structure by specifying the size of the application
9307 + * structure with the UIP_APPSTATE_SIZE macro.
9308 + *
9309 + * The file containing the definitions must be included in the
9310 + * uipopt.h file.
9311 + *
9312 + * The following example illustrates how this can look.
9313 + \code
9314 +
9315 +void httpd_appcall(void);
9316 +#define UIP_APPCALL httpd_appcall
9317 +
9318 +struct httpd_state {
9319 + u8_t state;
9320 + u16_t count;
9321 + char *dataptr;
9322 + char *script;
9323 +};
9324 +#define UIP_APPSTATE_SIZE (sizeof(struct httpd_state))
9325 + \endcode
9326 + */
9327 +
9328 +/**
9329 + * \var #define UIP_APPCALL
9330 + *
9331 + * The name of the application function that uIP should call in
9332 + * response to TCP/IP events.
9333 + *
9334 + */
9335 +
9336 +/**
9337 + * \var #define UIP_APPSTATE_SIZE
9338 + *
9339 + * The size of the application state that is to be stored in the
9340 + * uip_conn structure.
9341 + */
9342 +/** @} */
9343 +
9344 +/* Include the header file for the application program that should be
9345 + used. If you don't use the example web server, you should change
9346 + this. */
9347 +#include "httpd.h"
9348 +
9349 +
9350 +#endif /* __UIPOPT_H__ */
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