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 <arpa/inet.h>
  32 #include <linux/limits.h>
  33 #include <netdb.h>
  34 #include <ctype.h>
  35
  36 #include <dlfcn.h>
  37
  38
  39 #ifdef HAVE_LUA
  40 #include <lua.h>
  41 #endif
  42
  43 #ifdef HAVE_TLS
  44 #include <openssl/ssl.h>
  45 #endif
  46
  47
  48 #define UH_LIMIT_MSGHEAD        4096
  49 #define UH_LIMIT_HEADERS        64
  50
  51 #define UH_LIMIT_LISTENERS      16
  52 #define UH_LIMIT_CLIENTS        64
  53 #define UH_LIMIT_AUTHREALMS     8
  54
  55 #define UH_HTTP_MSG_GET         0
  56 #define UH_HTTP_MSG_HEAD        1
  57 #define UH_HTTP_MSG_POST        2
  58
  59 struct listener;
  60 struct client;
  61 struct http_request;
  62
  63 struct config {
  64         char docroot[PATH_MAX];
  65         char *realm;
  66         char *file;
  67 #ifdef HAVE_CGI
  68         char *cgi_prefix;
  69 #endif
  70 #ifdef HAVE_LUA
  71         char *lua_prefix;
  72         char *lua_handler;
  73         lua_State * (*lua_init) (const char *handler);
  74         void (*lua_close) (lua_State *L);
  75         void (*lua_request) (struct client *cl, struct http_request *req, lua_State *L);
  76 #endif
  77 #if defined(HAVE_CGI) || defined(HAVE_LUA)
  78         int script_timeout;
  79 #endif
  80 #ifdef HAVE_TLS
  81         char *cert;
  82         char *key;
  83         SSL_CTX *tls;
  84         SSL_CTX * (*tls_init) (void);
  85         int (*tls_cert) (SSL_CTX *c, const char *file);
  86         int (*tls_key) (SSL_CTX *c, const char *file);
  87         void (*tls_free) (struct listener *l);
  88         void (*tls_accept) (struct client *c);
  89         void (*tls_close) (struct client *c);
  90         int (*tls_recv) (struct client *c, void *buf, int len);
  91         int (*tls_send) (struct client *c, void *buf, int len);
  92 #endif
  93 };
  94
  95 struct listener {
  96         int socket;
  97         struct sockaddr_in6 addr;
  98         struct config *conf;
  99 #ifdef HAVE_TLS
 100         SSL_CTX *tls;
 101 #endif
 102 };
 103
 104 struct client {
 105         int socket;
 106         int peeklen;
 107         char peekbuf[UH_LIMIT_MSGHEAD];
 108         struct listener *server;
 109         struct sockaddr_in6 servaddr;
 110         struct sockaddr_in6 peeraddr;
 111 #ifdef HAVE_TLS
 112         SSL *tls;
 113 #endif
 114 };
 115
 116 struct auth_realm {
 117         char path[PATH_MAX];
 118         char user[32];
 119         char pass[128];
 120 };
 121
 122 struct http_request {
 123         int     method;
 124         float version;
 125         char *url;
 126         char *headers[UH_LIMIT_HEADERS];
 127         struct auth_realm *realm;
 128 };
 129
 130 struct http_response {
 131         int statuscode;
 132         char *statusmsg;
 133         char *headers[UH_LIMIT_HEADERS];
 134 };
 135
 136 #endif
 137