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 <sys/wait.h>
  30 #include <netinet/in.h>
  31 #include <netinet/tcp.h>
  32 #include <arpa/inet.h>
  33 #include <linux/limits.h>
  34 #include <netdb.h>
  35 #include <ctype.h>
  36 #include <errno.h>
  37 #include <dlfcn.h>
  38
  39
  40 #ifdef HAVE_LUA
  41 #include <lua.h>
  42 #endif
  43
  44 #ifdef HAVE_TLS
  45 #include <openssl/ssl.h>
  46 #endif
  47
  48 /* uClibc... */
  49 #ifndef SOL_TCP
  50 #define SOL_TCP 6
  51 #endif
  52
  53
  54 #define UH_LIMIT_MSGHEAD        4096
  55 #define UH_LIMIT_HEADERS        64
  56
  57 #define UH_LIMIT_CLIENTS        64
  58
  59 #define UH_HTTP_MSG_GET         0
  60 #define UH_HTTP_MSG_HEAD        1
  61 #define UH_HTTP_MSG_POST        2
  62
  63 struct listener;
  64 struct client;
  65 struct interpreter;
  66 struct http_request;
  67
  68 struct config {
  69         char docroot[PATH_MAX];
  70         char *realm;
  71         char *file;
  72         char *index_file;
  73         char *error_handler;
  74         int no_symlinks;
  75         int no_dirlists;
  76         int network_timeout;
  77         int rfc1918_filter;
  78         int tcp_keepalive;
  79 #ifdef HAVE_CGI
  80         char *cgi_prefix;
  81 #endif
  82 #ifdef HAVE_LUA
  83         char *lua_prefix;
  84         char *lua_handler;
  85         lua_State *lua_state;
  86         lua_State * (*lua_init) (const char *handler);
  87         void (*lua_close) (lua_State *L);
  88         void (*lua_request) (struct client *cl, struct http_request *req, lua_State *L);
  89 #endif
  90 #if defined(HAVE_CGI) || defined(HAVE_LUA)
  91         int script_timeout;
  92 #endif
  93 #ifdef HAVE_TLS
  94         char *cert;
  95         char *key;
  96         SSL_CTX *tls;
  97         SSL_CTX * (*tls_init) (void);
  98         int (*tls_cert) (SSL_CTX *c, const char *file);
  99         int (*tls_key) (SSL_CTX *c, const char *file);
 100         void (*tls_free) (struct listener *l);
 101         int (*tls_accept) (struct client *c);
 102         void (*tls_close) (struct client *c);
 103         int (*tls_recv) (struct client *c, void *buf, int len);
 104         int (*tls_send) (struct client *c, void *buf, int len);
 105 #endif
 106 };
 107
 108 struct listener {
 109         int socket;
 110         struct sockaddr_in6 addr;
 111         struct config *conf;
 112 #ifdef HAVE_TLS
 113         SSL_CTX *tls;
 114 #endif
 115         struct listener *next;
 116 };
 117
 118 struct client {
 119         int socket;
 120         int peeklen;
 121         char peekbuf[UH_LIMIT_MSGHEAD];
 122         struct listener *server;
 123         struct sockaddr_in6 servaddr;
 124         struct sockaddr_in6 peeraddr;
 125 #ifdef HAVE_TLS
 126         SSL *tls;
 127 #endif
 128         struct client *next;
 129 };
 130
 131 struct auth_realm {
 132         char path[PATH_MAX];
 133         char user[32];
 134         char pass[128];
 135         struct auth_realm *next;
 136 };
 137
 138 struct http_request {
 139         int     method;
 140         float version;
 141         int redirect_status;
 142         char *url;
 143         char *headers[UH_LIMIT_HEADERS];
 144         struct auth_realm *realm;
 145 };
 146
 147 struct http_response {
 148         int statuscode;
 149         char *statusmsg;
 150         char *headers[UH_LIMIT_HEADERS];
 151 };
 152
 153 #ifdef HAVE_CGI
 154 struct interpreter {
 155         char path[PATH_MAX];
 156         char extn[32];
 157         struct interpreter *next;
 158 };
 159 #endif
 160
 161 #endif