| 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 | #include <errno.h> |
| 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 | char *index_file; |
| 68 | char *error_handler; |
| 69 | int no_symlinks; |
| 70 | int no_dirlists; |
| 71 | int network_timeout; |
| 72 | int rfc1918_filter; |
| 73 | #ifdef HAVE_CGI |
| 74 | char *cgi_prefix; |
| 75 | #endif |
| 76 | #ifdef HAVE_LUA |
| 77 | char *lua_prefix; |
| 78 | char *lua_handler; |
| 79 | lua_State * (*lua_init) (const char *handler); |
| 80 | void (*lua_close) (lua_State *L); |
| 81 | void (*lua_request) (struct client *cl, struct http_request *req, lua_State *L); |
| 82 | #endif |
| 83 | #if defined(HAVE_CGI) || defined(HAVE_LUA) |
| 84 | int script_timeout; |
| 85 | #endif |
| 86 | #ifdef HAVE_TLS |
| 87 | char *cert; |
| 88 | char *key; |
| 89 | SSL_CTX *tls; |
| 90 | SSL_CTX * (*tls_init) (void); |
| 91 | int (*tls_cert) (SSL_CTX *c, const char *file); |
| 92 | int (*tls_key) (SSL_CTX *c, const char *file); |
| 93 | void (*tls_free) (struct listener *l); |
| 94 | void (*tls_accept) (struct client *c); |
| 95 | void (*tls_close) (struct client *c); |
| 96 | int (*tls_recv) (struct client *c, void *buf, int len); |
| 97 | int (*tls_send) (struct client *c, void *buf, int len); |
| 98 | #endif |
| 99 | }; |
| 100 | |
| 101 | struct listener { |
| 102 | int socket; |
| 103 | struct sockaddr_in6 addr; |
| 104 | struct config *conf; |
| 105 | #ifdef HAVE_TLS |
| 106 | SSL_CTX *tls; |
| 107 | #endif |
| 108 | }; |
| 109 | |
| 110 | struct client { |
| 111 | int socket; |
| 112 | int peeklen; |
| 113 | char peekbuf[UH_LIMIT_MSGHEAD]; |
| 114 | struct listener *server; |
| 115 | struct sockaddr_in6 servaddr; |
| 116 | struct sockaddr_in6 peeraddr; |
| 117 | #ifdef HAVE_TLS |
| 118 | SSL *tls; |
| 119 | #endif |
| 120 | }; |
| 121 | |
| 122 | struct auth_realm { |
| 123 | char path[PATH_MAX]; |
| 124 | char user[32]; |
| 125 | char pass[128]; |
| 126 | }; |
| 127 | |
| 128 | struct http_request { |
| 129 | int method; |
| 130 | float version; |
| 131 | int redirect_status; |
| 132 | char *url; |
| 133 | char *headers[UH_LIMIT_HEADERS]; |
| 134 | struct auth_realm *realm; |
| 135 | }; |
| 136 | |
| 137 | struct http_response { |
| 138 | int statuscode; |
| 139 | char *statusmsg; |
| 140 | char *headers[UH_LIMIT_HEADERS]; |
| 141 | }; |
| 142 | |
| 143 | #endif |
| 144 | |
| 145 | |
