package/uhttpd/src/uhttpd.h

   1 /*
   2  * uhttpd - Tiny single-threaded httpd - Main header
   3  *
   4  *   Copyright (C) 2010 Jo-Philipp Wich <xm@subsignal.org>
   5  *
   6  *  Licensed under the Apache License, Version 2.0 (the "License");
   7  *  you may not use this file except in compliance with the License.
   8  *  You may obtain a copy of the License at
   9  *
  10  *      http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  *  Unless required by applicable law or agreed to in writing, software
  13  *  distributed under the License is distributed on an "AS IS" BASIS,
  14  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  *  See the License for the specific language governing permissions and
  16  *  limitations under the License.
  17  */
  18
  19 #ifndef _UHTTPD_
  20
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <unistd.h>
  25 #include <signal.h>
  26 #include <sys/types.h>
  27 #include <sys/socket.h>
  28 #include <sys/select.h>
  29 #include <netinet/in.h>
  30 #include <arpa/inet.h>
  31 #include <linux/limits.h>
  32 #include <netdb.h>
  33 #include <ctype.h>
  34
  35 #include <dlfcn.h>
  36
  37
  38 #ifdef HAVE_LUA
  39 #include <lua.h>
  40 #endif
  41
  42 #ifdef HAVE_TLS
  43 #include <openssl/ssl.h>
  44 #endif
  45
  46
  47 #define UH_LIMIT_MSGHEAD        4096
  48 #define UH_LIMIT_HEADERS        64
  49
  50 #define UH_LIMIT_LISTENERS      16
  51 #define UH_LIMIT_CLIENTS        64
  52 #define UH_LIMIT_AUTHREALMS     8
  53
  54 #define UH_HTTP_MSG_GET         0
  55 #define UH_HTTP_MSG_HEAD        1
  56 #define UH_HTTP_MSG_POST        2
  57
  58 struct listener;
  59 struct client;
  60 struct http_request;
  61
  62 struct config {
  63         char docroot[PATH_MAX];
  64         char *realm;
  65         char *file;
  66 #ifdef HAVE_CGI
  67         char *cgi_prefix;
  68 #endif
  69 #ifdef HAVE_LUA
  70         char *lua_prefix;
  71         char *lua_handler;
  72         lua_State * (*lua_init) (const char *handler);
  73         void (*lua_close) (lua_State *L);
  74         void (*lua_request) (struct client *cl, struct http_request *req, lua_State *L);
  75 #endif
  76 #ifdef HAVE_TLS
  77         char *cert;
  78         char *key;
  79         SSL_CTX *tls;
  80         SSL_CTX * (*tls_init) (void);
  81         int (*tls_cert) (SSL_CTX *c, const char *file);
  82         int (*tls_key) (SSL_CTX *c, const char *file);
  83         void (*tls_free) (struct listener *l);
  84         void (*tls_accept) (struct client *c);
  85         void (*tls_close) (struct client *c);
  86         int (*tls_recv) (struct client *c, void *buf, int len);
  87         int (*tls_send) (struct client *c, void *buf, int len);
  88 #endif
  89 };
  90
  91 struct listener {
  92         int socket;
  93         struct sockaddr_in6 addr;
  94         struct config *conf;
  95 #ifdef HAVE_TLS
  96         SSL_CTX *tls;
  97 #endif
  98 };
  99
 100 struct client {
 101         int socket;
 102         int peeklen;
 103         char peekbuf[UH_LIMIT_MSGHEAD];
 104         struct listener *server;
 105         struct sockaddr_in6 servaddr;
 106         struct sockaddr_in6 peeraddr;
 107 #ifdef HAVE_TLS
 108         SSL *tls;
 109 #endif
 110 };
 111
 112 struct auth_realm {
 113         char path[PATH_MAX];
 114         char user[32];
 115         char pass[128];
 116 };
 117
 118 struct http_request {
 119         int     method;
 120         float version;
 121         char *url;
 122         char *headers[UH_LIMIT_HEADERS];
 123         struct auth_realm *realm;
 124 };
 125
 126 struct http_response {
 127         int statuscode;
 128         char *statusmsg;
 129         char *headers[UH_LIMIT_HEADERS];
 130 };
 131
 132 #endif
 133