Andy Green | 58eaa74 | 2011-03-07 17:54:06 +0000 | [diff] [blame] | 1 | /* |
Andy Green | a0da8a8 | 2010-11-08 17:12:19 +0000 | [diff] [blame] | 2 | * libwebsockets - small server side websockets and web server implementation |
Andy Green | 8f037e4 | 2010-12-19 22:13:26 +0000 | [diff] [blame] | 3 | * |
Andy Green | a0da8a8 | 2010-11-08 17:12:19 +0000 | [diff] [blame] | 4 | * Copyright (C) 2010 Andy Green <andy@warmcat.com> |
| 5 | * |
| 6 | * This library is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU Lesser General Public |
| 8 | * License as published by the Free Software Foundation: |
| 9 | * version 2.1 of the License. |
| 10 | * |
| 11 | * This library is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * Lesser General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU Lesser General Public |
| 17 | * License along with this library; if not, write to the Free Software |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, |
| 19 | * MA 02110-1301 USA |
Andy Green | 05a0a7b | 2010-10-31 17:51:39 +0000 | [diff] [blame] | 20 | */ |
| 21 | |
Andy Green | 7c212cc | 2010-11-08 20:20:42 +0000 | [diff] [blame] | 22 | #include "private-libwebsockets.h" |
Andy Green | ff95d7a | 2010-10-28 22:36:01 +0100 | [diff] [blame] | 23 | |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 24 | #ifdef WIN32 |
David Galeano | cb19368 | 2013-01-09 15:29:00 +0800 | [diff] [blame] | 25 | #include <tchar.h> |
| 26 | #include <io.h> |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 27 | #else |
David | c4ef7b1 | 2013-01-12 20:39:47 +0800 | [diff] [blame] | 28 | #ifdef LWS_BUILTIN_GETIFADDRS |
| 29 | #include <getifaddrs.h> |
| 30 | #else |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 31 | #include <ifaddrs.h> |
David | c4ef7b1 | 2013-01-12 20:39:47 +0800 | [diff] [blame] | 32 | #endif |
Joakim Soderberg | 4c53123 | 2013-02-06 15:26:58 +0900 | [diff] [blame] | 33 | #include <syslog.h> |
Andy Green | 7627af5 | 2011-03-09 15:13:52 +0000 | [diff] [blame] | 34 | #include <sys/un.h> |
Andy Green | a69f051 | 2012-05-03 12:32:38 +0800 | [diff] [blame] | 35 | #include <sys/socket.h> |
| 36 | #include <netdb.h> |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 37 | #endif |
Andy Green | 2e24da0 | 2011-03-05 16:12:04 +0000 | [diff] [blame] | 38 | |
| 39 | #ifdef LWS_OPENSSL_SUPPORT |
| 40 | int openssl_websocket_private_data_index; |
| 41 | #endif |
| 42 | |
Andy Green | aa6fc44 | 2012-04-12 13:26:49 +0800 | [diff] [blame] | 43 | #ifdef __MINGW32__ |
| 44 | #include "../win32port/win32helpers/websock-w32.c" |
| 45 | #else |
| 46 | #ifdef __MINGW64__ |
| 47 | #include "../win32port/win32helpers/websock-w32.c" |
| 48 | #endif |
| 49 | #endif |
| 50 | |
Andy Green | 7b40545 | 2013-02-01 10:50:15 +0800 | [diff] [blame] | 51 | #ifndef LWS_BUILD_HASH |
| 52 | #define LWS_BUILD_HASH "unknown-build-hash" |
| 53 | #endif |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 54 | |
Andy Green | 7c19c34 | 2013-01-19 12:18:07 +0800 | [diff] [blame] | 55 | static int log_level = LLL_ERR | LLL_WARN | LLL_NOTICE; |
Andy Green | 058ba81 | 2013-01-19 11:32:18 +0800 | [diff] [blame] | 56 | static void lwsl_emit_stderr(int level, const char *line); |
| 57 | static void (*lwsl_emit)(int level, const char *line) = lwsl_emit_stderr; |
| 58 | |
Andy Green | 7b40545 | 2013-02-01 10:50:15 +0800 | [diff] [blame] | 59 | static const char *library_version = LWS_LIBRARY_VERSION " " LWS_BUILD_HASH; |
| 60 | |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 61 | static const char * const log_level_names[] = { |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 62 | "ERR", |
| 63 | "WARN", |
Andy Green | 7c19c34 | 2013-01-19 12:18:07 +0800 | [diff] [blame] | 64 | "NOTICE", |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 65 | "INFO", |
| 66 | "DEBUG", |
| 67 | "PARSER", |
| 68 | "HEADER", |
| 69 | "EXTENSION", |
| 70 | "CLIENT", |
Andy Green | d636e35 | 2013-01-29 12:36:17 +0800 | [diff] [blame] | 71 | "LATENCY", |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 72 | }; |
| 73 | |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 74 | #ifndef LWS_NO_CLIENT |
| 75 | extern int lws_client_socket_service( |
| 76 | struct libwebsocket_context *context, |
| 77 | struct libwebsocket *wsi, struct pollfd *pollfd); |
| 78 | #endif |
| 79 | #ifndef LWS_NO_SERVER |
| 80 | extern int lws_server_socket_service( |
| 81 | struct libwebsocket_context *context, |
| 82 | struct libwebsocket *wsi, struct pollfd *pollfd); |
| 83 | #endif |
| 84 | |
Andy Green | 7b40545 | 2013-02-01 10:50:15 +0800 | [diff] [blame] | 85 | /** |
| 86 | * lws_get_library_version: get version and git hash library built from |
| 87 | * |
| 88 | * returns a const char * to a string like "1.1 178d78c" |
| 89 | * representing the library version followed by the git head hash it |
| 90 | * was built from |
| 91 | */ |
| 92 | |
| 93 | const char * |
| 94 | lws_get_library_version(void) |
| 95 | { |
| 96 | return library_version; |
| 97 | } |
| 98 | |
Andy Green | 0d33833 | 2011-02-12 11:57:43 +0000 | [diff] [blame] | 99 | int |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 100 | insert_wsi_socket_into_fds(struct libwebsocket_context *context, |
| 101 | struct libwebsocket *wsi) |
Andy Green | 0d33833 | 2011-02-12 11:57:43 +0000 | [diff] [blame] | 102 | { |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 103 | if (context->fds_count >= context->max_fds) { |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 104 | lwsl_err("Too many fds (%d)\n", context->max_fds); |
Andy Green | 0d33833 | 2011-02-12 11:57:43 +0000 | [diff] [blame] | 105 | return 1; |
| 106 | } |
| 107 | |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 108 | if (wsi->sock > context->max_fds) { |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 109 | lwsl_err("Socket fd %d is too high (%d)\n", |
| 110 | wsi->sock, context->max_fds); |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 111 | return 1; |
| 112 | } |
| 113 | |
| 114 | assert(wsi); |
| 115 | assert(wsi->sock); |
| 116 | |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 117 | lwsl_info("insert_wsi_socket_into_fds: wsi=%p, sock=%d, fds pos=%d\n", |
| 118 | wsi, wsi->sock, context->fds_count); |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 119 | |
| 120 | context->lws_lookup[wsi->sock] = wsi; |
| 121 | wsi->position_in_fds_table = context->fds_count; |
| 122 | context->fds[context->fds_count].fd = wsi->sock; |
| 123 | context->fds[context->fds_count].events = POLLIN; |
| 124 | context->fds[context->fds_count++].revents = 0; |
| 125 | |
| 126 | /* external POLL support via protocol 0 */ |
| 127 | context->protocols[0].callback(context, wsi, |
| 128 | LWS_CALLBACK_ADD_POLL_FD, |
| 129 | (void *)(long)wsi->sock, NULL, POLLIN); |
Andy Green | 0d33833 | 2011-02-12 11:57:43 +0000 | [diff] [blame] | 130 | |
| 131 | return 0; |
| 132 | } |
| 133 | |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 134 | static int |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 135 | remove_wsi_socket_from_fds(struct libwebsocket_context *context, |
| 136 | struct libwebsocket *wsi) |
Andy Green | 0d33833 | 2011-02-12 11:57:43 +0000 | [diff] [blame] | 137 | { |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 138 | int m; |
Andy Green | 0d33833 | 2011-02-12 11:57:43 +0000 | [diff] [blame] | 139 | |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 140 | if (!--context->fds_count) |
| 141 | goto do_ext; |
Andy Green | 0d33833 | 2011-02-12 11:57:43 +0000 | [diff] [blame] | 142 | |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 143 | if (wsi->sock > context->max_fds) { |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 144 | lwsl_err("Socket fd %d too high (%d)\n", |
| 145 | wsi->sock, context->max_fds); |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 146 | return 1; |
| 147 | } |
Andy Green | 0d33833 | 2011-02-12 11:57:43 +0000 | [diff] [blame] | 148 | |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 149 | lwsl_info("remove_wsi_socket_from_fds: wsi=%p, sock=%d, fds pos=%d\n", |
| 150 | wsi, wsi->sock, wsi->position_in_fds_table); |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 151 | |
| 152 | m = wsi->position_in_fds_table; /* replace the contents for this */ |
| 153 | |
| 154 | /* have the last guy take up the vacant slot */ |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 155 | context->fds[m] = context->fds[context->fds_count]; |
| 156 | /* |
| 157 | * end guy's fds_lookup entry remains unchanged |
| 158 | * (still same fd pointing to same wsi) |
| 159 | */ |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 160 | /* end guy's "position in fds table" changed */ |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 161 | context->lws_lookup[context->fds[context->fds_count].fd]-> |
| 162 | position_in_fds_table = m; |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 163 | /* deletion guy's lws_lookup entry needs nuking */ |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 164 | context->lws_lookup[wsi->sock] = NULL; |
| 165 | /* removed wsi has no position any more */ |
| 166 | wsi->position_in_fds_table = -1; |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 167 | |
| 168 | do_ext: |
| 169 | /* remove also from external POLL support via protocol 0 */ |
| 170 | if (wsi->sock) |
| 171 | context->protocols[0].callback(context, wsi, |
| 172 | LWS_CALLBACK_DEL_POLL_FD, (void *)(long)wsi->sock, NULL, 0); |
| 173 | |
| 174 | return 0; |
Andy Green | 0d33833 | 2011-02-12 11:57:43 +0000 | [diff] [blame] | 175 | } |
| 176 | |
Andy Green | 32375b7 | 2011-02-19 08:32:53 +0000 | [diff] [blame] | 177 | |
Andy Green | 8f037e4 | 2010-12-19 22:13:26 +0000 | [diff] [blame] | 178 | void |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 179 | libwebsocket_close_and_free_session(struct libwebsocket_context *context, |
Andy Green | 687b018 | 2011-02-26 11:04:01 +0000 | [diff] [blame] | 180 | struct libwebsocket *wsi, enum lws_close_status reason) |
Andy Green | 251f6fa | 2010-11-03 11:13:06 +0000 | [diff] [blame] | 181 | { |
Andy Green | b45993c | 2010-12-18 15:13:50 +0000 | [diff] [blame] | 182 | int n; |
Andy Green | 62c54d2 | 2011-02-14 09:14:25 +0000 | [diff] [blame] | 183 | int old_state; |
Andy Green | 5e1fa17 | 2011-02-10 09:07:05 +0000 | [diff] [blame] | 184 | unsigned char buf[LWS_SEND_BUFFER_PRE_PADDING + 2 + |
| 185 | LWS_SEND_BUFFER_POST_PADDING]; |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 186 | #ifndef LWS_NO_EXTENSIONS |
Andy Green | c44159f | 2011-03-07 07:08:18 +0000 | [diff] [blame] | 187 | int ret; |
| 188 | int m; |
| 189 | struct lws_tokens eff_buf; |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 190 | struct libwebsocket_extension *ext; |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 191 | #endif |
Andy Green | b45993c | 2010-12-18 15:13:50 +0000 | [diff] [blame] | 192 | |
Andy Green | 4b6fbe1 | 2011-02-14 08:03:48 +0000 | [diff] [blame] | 193 | if (!wsi) |
Andy Green | b45993c | 2010-12-18 15:13:50 +0000 | [diff] [blame] | 194 | return; |
| 195 | |
Andy Green | 62c54d2 | 2011-02-14 09:14:25 +0000 | [diff] [blame] | 196 | old_state = wsi->state; |
Andy Green | 251f6fa | 2010-11-03 11:13:06 +0000 | [diff] [blame] | 197 | |
Andy Green | 62c54d2 | 2011-02-14 09:14:25 +0000 | [diff] [blame] | 198 | if (old_state == WSI_STATE_DEAD_SOCKET) |
Andy Green | 5e1fa17 | 2011-02-10 09:07:05 +0000 | [diff] [blame] | 199 | return; |
| 200 | |
Andy Green | 623a98d | 2013-01-21 11:04:23 +0800 | [diff] [blame] | 201 | wsi->u.ws.close_reason = reason; |
Andy Green | da527df | 2011-03-07 07:08:12 +0000 | [diff] [blame] | 202 | |
Andy Green | b8b247d | 2013-01-22 07:20:08 +0800 | [diff] [blame] | 203 | if (wsi->mode == LWS_CONNMODE_HTTP_SERVING && wsi->u.http.fd) { |
| 204 | close(wsi->u.http.fd); |
| 205 | wsi->u.http.fd = 0; |
| 206 | } |
| 207 | |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 208 | #ifndef LWS_NO_EXTENSIONS |
Andy Green | da527df | 2011-03-07 07:08:12 +0000 | [diff] [blame] | 209 | /* |
Andy Green | 68b4504 | 2011-05-25 21:41:57 +0100 | [diff] [blame] | 210 | * are his extensions okay with him closing? Eg he might be a mux |
| 211 | * parent and just his ch1 aspect is closing? |
| 212 | */ |
| 213 | |
Andy Green | 68b4504 | 2011-05-25 21:41:57 +0100 | [diff] [blame] | 214 | for (n = 0; n < wsi->count_active_extensions; n++) { |
| 215 | if (!wsi->active_extensions[n]->callback) |
| 216 | continue; |
| 217 | |
| 218 | m = wsi->active_extensions[n]->callback(context, |
| 219 | wsi->active_extensions[n], wsi, |
| 220 | LWS_EXT_CALLBACK_CHECK_OK_TO_REALLY_CLOSE, |
| 221 | wsi->active_extensions_user[n], NULL, 0); |
| 222 | |
| 223 | /* |
| 224 | * if somebody vetoed actually closing him at this time.... |
| 225 | * up to the extension to track the attempted close, let's |
| 226 | * just bail |
| 227 | */ |
| 228 | |
| 229 | if (m) { |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 230 | lwsl_ext("extension vetoed close\n"); |
Andy Green | 68b4504 | 2011-05-25 21:41:57 +0100 | [diff] [blame] | 231 | return; |
| 232 | } |
| 233 | } |
| 234 | |
Andy Green | 68b4504 | 2011-05-25 21:41:57 +0100 | [diff] [blame] | 235 | /* |
Andy Green | c44159f | 2011-03-07 07:08:18 +0000 | [diff] [blame] | 236 | * flush any tx pending from extensions, since we may send close packet |
| 237 | * if there are problems with send, just nuke the connection |
| 238 | */ |
| 239 | |
| 240 | ret = 1; |
| 241 | while (ret == 1) { |
| 242 | |
| 243 | /* default to nobody has more to spill */ |
| 244 | |
| 245 | ret = 0; |
| 246 | eff_buf.token = NULL; |
| 247 | eff_buf.token_len = 0; |
| 248 | |
| 249 | /* show every extension the new incoming data */ |
| 250 | |
| 251 | for (n = 0; n < wsi->count_active_extensions; n++) { |
| 252 | m = wsi->active_extensions[n]->callback( |
Andy Green | 46c2ea0 | 2011-03-22 09:04:01 +0000 | [diff] [blame] | 253 | wsi->protocol->owning_server, |
| 254 | wsi->active_extensions[n], wsi, |
Andy Green | c44159f | 2011-03-07 07:08:18 +0000 | [diff] [blame] | 255 | LWS_EXT_CALLBACK_FLUSH_PENDING_TX, |
| 256 | wsi->active_extensions_user[n], &eff_buf, 0); |
| 257 | if (m < 0) { |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 258 | lwsl_ext("Extension reports fatal error\n"); |
Andy Green | c44159f | 2011-03-07 07:08:18 +0000 | [diff] [blame] | 259 | goto just_kill_connection; |
| 260 | } |
| 261 | if (m) |
| 262 | /* |
| 263 | * at least one extension told us he has more |
| 264 | * to spill, so we will go around again after |
| 265 | */ |
| 266 | ret = 1; |
| 267 | } |
| 268 | |
| 269 | /* assuming they left us something to send, send it */ |
| 270 | |
| 271 | if (eff_buf.token_len) |
| 272 | if (lws_issue_raw(wsi, (unsigned char *)eff_buf.token, |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 273 | eff_buf.token_len)) { |
| 274 | lwsl_debug("close: ext spill failed\n"); |
Andy Green | c44159f | 2011-03-07 07:08:18 +0000 | [diff] [blame] | 275 | goto just_kill_connection; |
Andy Green | 0303db4 | 2013-01-17 14:46:43 +0800 | [diff] [blame] | 276 | } |
Andy Green | c44159f | 2011-03-07 07:08:18 +0000 | [diff] [blame] | 277 | } |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 278 | #endif |
Andy Green | c44159f | 2011-03-07 07:08:18 +0000 | [diff] [blame] | 279 | |
| 280 | /* |
Andy Green | da527df | 2011-03-07 07:08:12 +0000 | [diff] [blame] | 281 | * signal we are closing, libsocket_write will |
| 282 | * add any necessary version-specific stuff. If the write fails, |
| 283 | * no worries we are closing anyway. If we didn't initiate this |
| 284 | * close, then our state has been changed to |
| 285 | * WSI_STATE_RETURNED_CLOSE_ALREADY and we will skip this. |
| 286 | * |
| 287 | * Likewise if it's a second call to close this connection after we |
| 288 | * sent the close indication to the peer already, we are in state |
| 289 | * WSI_STATE_AWAITING_CLOSE_ACK and will skip doing this a second time. |
| 290 | */ |
| 291 | |
| 292 | if (old_state == WSI_STATE_ESTABLISHED && |
| 293 | reason != LWS_CLOSE_STATUS_NOSTATUS) { |
Andy Green | 66a16f3 | 2011-05-24 22:07:45 +0100 | [diff] [blame] | 294 | |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 295 | lwsl_debug("sending close indication...\n"); |
Andy Green | 66a16f3 | 2011-05-24 22:07:45 +0100 | [diff] [blame] | 296 | |
Andy Green | fdd305a | 2013-02-11 14:32:48 +0800 | [diff] [blame] | 297 | /* make valgrind happy */ |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 298 | memset(buf, 0, sizeof(buf)); |
| 299 | n = libwebsocket_write(wsi, |
| 300 | &buf[LWS_SEND_BUFFER_PRE_PADDING + 2], |
Andy Green | da527df | 2011-03-07 07:08:12 +0000 | [diff] [blame] | 301 | 0, LWS_WRITE_CLOSE); |
| 302 | if (!n) { |
| 303 | /* |
| 304 | * we have sent a nice protocol level indication we |
| 305 | * now wish to close, we should not send anything more |
| 306 | */ |
| 307 | |
| 308 | wsi->state = WSI_STATE_AWAITING_CLOSE_ACK; |
| 309 | |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 310 | /* |
| 311 | * ...and we should wait for a reply for a bit |
| 312 | * out of politeness |
| 313 | */ |
Andy Green | da527df | 2011-03-07 07:08:12 +0000 | [diff] [blame] | 314 | |
| 315 | libwebsocket_set_timeout(wsi, |
Andy Green | 0303db4 | 2013-01-17 14:46:43 +0800 | [diff] [blame] | 316 | PENDING_TIMEOUT_CLOSE_ACK, 1); |
Andy Green | da527df | 2011-03-07 07:08:12 +0000 | [diff] [blame] | 317 | |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 318 | lwsl_debug("sent close indication, awaiting ack\n"); |
Andy Green | da527df | 2011-03-07 07:08:12 +0000 | [diff] [blame] | 319 | |
| 320 | return; |
| 321 | } |
| 322 | |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 323 | lwsl_info("close: sending close packet failed, hanging up\n"); |
Andy Green | 0303db4 | 2013-01-17 14:46:43 +0800 | [diff] [blame] | 324 | |
Andy Green | da527df | 2011-03-07 07:08:12 +0000 | [diff] [blame] | 325 | /* else, the send failed and we should just hang up */ |
| 326 | } |
| 327 | |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 328 | #ifndef LWS_NO_EXTENSIONS |
Andy Green | c44159f | 2011-03-07 07:08:18 +0000 | [diff] [blame] | 329 | just_kill_connection: |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 330 | #endif |
Andy Green | 66a16f3 | 2011-05-24 22:07:45 +0100 | [diff] [blame] | 331 | |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 332 | lwsl_debug("close: just_kill_connection\n"); |
Andy Green | 66a16f3 | 2011-05-24 22:07:45 +0100 | [diff] [blame] | 333 | |
Andy Green | da527df | 2011-03-07 07:08:12 +0000 | [diff] [blame] | 334 | /* |
| 335 | * we won't be servicing or receiving anything further from this guy |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 336 | * delete socket from the internal poll list if still present |
Andy Green | da527df | 2011-03-07 07:08:12 +0000 | [diff] [blame] | 337 | */ |
Andy Green | 4b6fbe1 | 2011-02-14 08:03:48 +0000 | [diff] [blame] | 338 | |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 339 | remove_wsi_socket_from_fds(context, wsi); |
Andy Green | 4b6fbe1 | 2011-02-14 08:03:48 +0000 | [diff] [blame] | 340 | |
Andy Green | 251f6fa | 2010-11-03 11:13:06 +0000 | [diff] [blame] | 341 | wsi->state = WSI_STATE_DEAD_SOCKET; |
| 342 | |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 343 | if ((old_state == WSI_STATE_ESTABLISHED || |
| 344 | wsi->mode == LWS_CONNMODE_WS_SERVING || |
| 345 | wsi->mode == LWS_CONNMODE_WS_CLIENT) && wsi->u.ws.rx_user_buffer) { |
Andy Green | 5449511 | 2013-02-06 21:10:16 +0900 | [diff] [blame] | 346 | free(wsi->u.ws.rx_user_buffer); |
| 347 | wsi->u.ws.rx_user_buffer = NULL; |
| 348 | } |
| 349 | |
Andy Green | 4b6fbe1 | 2011-02-14 08:03:48 +0000 | [diff] [blame] | 350 | /* tell the user it's all over for this guy */ |
| 351 | |
Andy Green | d430273 | 2011-02-28 07:45:29 +0000 | [diff] [blame] | 352 | if (wsi->protocol && wsi->protocol->callback && |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 353 | ((old_state == WSI_STATE_ESTABLISHED) || |
| 354 | (old_state == WSI_STATE_RETURNED_CLOSE_ALREADY) || |
| 355 | (old_state == WSI_STATE_AWAITING_CLOSE_ACK))) { |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 356 | lwsl_debug("calling back CLOSED\n"); |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 357 | wsi->protocol->callback(context, wsi, LWS_CALLBACK_CLOSED, |
Andy Green | e77ddd8 | 2010-11-13 10:03:47 +0000 | [diff] [blame] | 358 | wsi->user_space, NULL, 0); |
Andy Green | cc01247 | 2011-11-07 19:53:23 +0800 | [diff] [blame] | 359 | } else |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 360 | lwsl_debug("not calling back closed\n"); |
Andy Green | 251f6fa | 2010-11-03 11:13:06 +0000 | [diff] [blame] | 361 | |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 362 | #ifndef LWS_NO_EXTENSIONS |
Andy Green | ef660a9 | 2011-03-06 10:29:38 +0000 | [diff] [blame] | 363 | /* deallocate any active extension contexts */ |
| 364 | |
| 365 | for (n = 0; n < wsi->count_active_extensions; n++) { |
| 366 | if (!wsi->active_extensions[n]->callback) |
| 367 | continue; |
| 368 | |
Andy Green | 46c2ea0 | 2011-03-22 09:04:01 +0000 | [diff] [blame] | 369 | wsi->active_extensions[n]->callback(context, |
| 370 | wsi->active_extensions[n], wsi, |
| 371 | LWS_EXT_CALLBACK_DESTROY, |
| 372 | wsi->active_extensions_user[n], NULL, 0); |
Andy Green | ef660a9 | 2011-03-06 10:29:38 +0000 | [diff] [blame] | 373 | |
| 374 | free(wsi->active_extensions_user[n]); |
| 375 | } |
| 376 | |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 377 | /* |
| 378 | * inform all extensions in case they tracked this guy out of band |
| 379 | * even though not active on him specifically |
| 380 | */ |
| 381 | |
| 382 | ext = context->extensions; |
| 383 | while (ext && ext->callback) { |
| 384 | ext->callback(context, ext, wsi, |
| 385 | LWS_EXT_CALLBACK_DESTROY_ANY_WSI_CLOSING, |
| 386 | NULL, NULL, 0); |
| 387 | ext++; |
| 388 | } |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 389 | #endif |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 390 | |
Andy Green | 623a98d | 2013-01-21 11:04:23 +0800 | [diff] [blame] | 391 | if (wsi->u.ws.rxflow_buffer) |
| 392 | free(wsi->u.ws.rxflow_buffer); |
Andy Green | 706961d | 2013-01-17 16:50:35 +0800 | [diff] [blame] | 393 | |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 394 | /* lwsl_info("closing fd=%d\n", wsi->sock); */ |
Andy Green | 251f6fa | 2010-11-03 11:13:06 +0000 | [diff] [blame] | 395 | |
Andy Green | 3faa9c7 | 2010-11-08 17:03:03 +0000 | [diff] [blame] | 396 | #ifdef LWS_OPENSSL_SUPPORT |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 397 | if (wsi->ssl) { |
Andy Green | 3faa9c7 | 2010-11-08 17:03:03 +0000 | [diff] [blame] | 398 | n = SSL_get_fd(wsi->ssl); |
| 399 | SSL_shutdown(wsi->ssl); |
Andy Green | 3fc2c65 | 2013-01-14 15:35:02 +0800 | [diff] [blame] | 400 | compatible_close(n); |
Andy Green | 3faa9c7 | 2010-11-08 17:03:03 +0000 | [diff] [blame] | 401 | SSL_free(wsi->ssl); |
| 402 | } else { |
| 403 | #endif |
Andy Green | 0303db4 | 2013-01-17 14:46:43 +0800 | [diff] [blame] | 404 | if (wsi->sock) { |
| 405 | n = shutdown(wsi->sock, SHUT_RDWR); |
| 406 | if (n) |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 407 | lwsl_debug("closing: shutdown returned %d\n", |
| 408 | errno); |
Andy Green | 3fc2c65 | 2013-01-14 15:35:02 +0800 | [diff] [blame] | 409 | |
Andy Green | 0303db4 | 2013-01-17 14:46:43 +0800 | [diff] [blame] | 410 | n = compatible_close(wsi->sock); |
| 411 | if (n) |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 412 | lwsl_debug("closing: close returned %d\n", |
| 413 | errno); |
Andy Green | 0303db4 | 2013-01-17 14:46:43 +0800 | [diff] [blame] | 414 | } |
Andy Green | 3faa9c7 | 2010-11-08 17:03:03 +0000 | [diff] [blame] | 415 | #ifdef LWS_OPENSSL_SUPPORT |
| 416 | } |
| 417 | #endif |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 418 | if (wsi->protocol && wsi->protocol->per_session_data_size && |
| 419 | wsi->user_space) /* user code may own */ |
Andy Green | 4f3943a | 2010-11-12 10:44:16 +0000 | [diff] [blame] | 420 | free(wsi->user_space); |
| 421 | |
Andy Green | 251f6fa | 2010-11-03 11:13:06 +0000 | [diff] [blame] | 422 | free(wsi); |
| 423 | } |
| 424 | |
Andy Green | 0703409 | 2011-02-13 08:37:12 +0000 | [diff] [blame] | 425 | /** |
Andy Green | f7ee549 | 2011-02-13 09:04:21 +0000 | [diff] [blame] | 426 | * libwebsockets_hangup_on_client() - Server calls to terminate client |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 427 | * connection |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 428 | * @context: libwebsockets context |
Andy Green | f7ee549 | 2011-02-13 09:04:21 +0000 | [diff] [blame] | 429 | * @fd: Connection socket descriptor |
| 430 | */ |
| 431 | |
| 432 | void |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 433 | libwebsockets_hangup_on_client(struct libwebsocket_context *context, int fd) |
Andy Green | f7ee549 | 2011-02-13 09:04:21 +0000 | [diff] [blame] | 434 | { |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 435 | struct libwebsocket *wsi = context->lws_lookup[fd]; |
Andy Green | f7ee549 | 2011-02-13 09:04:21 +0000 | [diff] [blame] | 436 | |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 437 | if (wsi) { |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 438 | lwsl_info("close connection at hangup_on_client:\n"); |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 439 | libwebsocket_close_and_free_session(context, |
| 440 | wsi, LWS_CLOSE_STATUS_NOSTATUS); |
| 441 | } else |
| 442 | close(fd); |
Andy Green | f7ee549 | 2011-02-13 09:04:21 +0000 | [diff] [blame] | 443 | } |
| 444 | |
| 445 | |
| 446 | /** |
Andy Green | 0703409 | 2011-02-13 08:37:12 +0000 | [diff] [blame] | 447 | * libwebsockets_get_peer_addresses() - Get client address information |
Andy Green | aaf0b9f | 2013-01-30 08:12:20 +0800 | [diff] [blame] | 448 | * @context: Libwebsockets context |
| 449 | * @wsi: Local struct libwebsocket associated with |
Andy Green | 0703409 | 2011-02-13 08:37:12 +0000 | [diff] [blame] | 450 | * @fd: Connection socket descriptor |
| 451 | * @name: Buffer to take client address name |
| 452 | * @name_len: Length of client address name buffer |
| 453 | * @rip: Buffer to take client address IP qotted quad |
| 454 | * @rip_len: Length of client address IP buffer |
| 455 | * |
| 456 | * This function fills in @name and @rip with the name and IP of |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 457 | * the client connected with socket descriptor @fd. Names may be |
| 458 | * truncated if there is not enough room. If either cannot be |
| 459 | * determined, they will be returned as valid zero-length strings. |
Andy Green | 0703409 | 2011-02-13 08:37:12 +0000 | [diff] [blame] | 460 | */ |
| 461 | |
| 462 | void |
Andy Green | aaf0b9f | 2013-01-30 08:12:20 +0800 | [diff] [blame] | 463 | libwebsockets_get_peer_addresses(struct libwebsocket_context *context, |
| 464 | struct libwebsocket *wsi, int fd, char *name, int name_len, |
Andy Green | 0703409 | 2011-02-13 08:37:12 +0000 | [diff] [blame] | 465 | char *rip, int rip_len) |
| 466 | { |
| 467 | unsigned int len; |
| 468 | struct sockaddr_in sin; |
| 469 | struct hostent *host; |
| 470 | struct hostent *host1; |
| 471 | char ip[128]; |
Andy Green | f92def7 | 2011-03-09 15:02:20 +0000 | [diff] [blame] | 472 | unsigned char *p; |
Andy Green | 0703409 | 2011-02-13 08:37:12 +0000 | [diff] [blame] | 473 | int n; |
Andy Green | aaf0b9f | 2013-01-30 08:12:20 +0800 | [diff] [blame] | 474 | int ret = -1; |
David Galeano | cb19368 | 2013-01-09 15:29:00 +0800 | [diff] [blame] | 475 | #ifdef AF_LOCAL |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 476 | struct sockaddr_un *un; |
David Galeano | cb19368 | 2013-01-09 15:29:00 +0800 | [diff] [blame] | 477 | #endif |
Andy Green | 0703409 | 2011-02-13 08:37:12 +0000 | [diff] [blame] | 478 | |
| 479 | rip[0] = '\0'; |
| 480 | name[0] = '\0'; |
| 481 | |
Andy Green | aaf0b9f | 2013-01-30 08:12:20 +0800 | [diff] [blame] | 482 | lws_latency_pre(context, wsi); |
| 483 | |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 484 | len = sizeof(sin); |
Andy Green | 0703409 | 2011-02-13 08:37:12 +0000 | [diff] [blame] | 485 | if (getpeername(fd, (struct sockaddr *) &sin, &len) < 0) { |
| 486 | perror("getpeername"); |
Andy Green | aaf0b9f | 2013-01-30 08:12:20 +0800 | [diff] [blame] | 487 | goto bail; |
Andy Green | 0703409 | 2011-02-13 08:37:12 +0000 | [diff] [blame] | 488 | } |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 489 | |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 490 | host = gethostbyaddr((char *) &sin.sin_addr, sizeof(sin.sin_addr), |
Andy Green | 0703409 | 2011-02-13 08:37:12 +0000 | [diff] [blame] | 491 | AF_INET); |
| 492 | if (host == NULL) { |
| 493 | perror("gethostbyaddr"); |
Andy Green | aaf0b9f | 2013-01-30 08:12:20 +0800 | [diff] [blame] | 494 | goto bail; |
Andy Green | 0703409 | 2011-02-13 08:37:12 +0000 | [diff] [blame] | 495 | } |
| 496 | |
| 497 | strncpy(name, host->h_name, name_len); |
| 498 | name[name_len - 1] = '\0'; |
| 499 | |
| 500 | host1 = gethostbyname(host->h_name); |
| 501 | if (host1 == NULL) |
Andy Green | aaf0b9f | 2013-01-30 08:12:20 +0800 | [diff] [blame] | 502 | goto bail; |
Andy Green | f92def7 | 2011-03-09 15:02:20 +0000 | [diff] [blame] | 503 | p = (unsigned char *)host1; |
Andy Green | 0703409 | 2011-02-13 08:37:12 +0000 | [diff] [blame] | 504 | n = 0; |
| 505 | while (p != NULL) { |
Andy Green | f92def7 | 2011-03-09 15:02:20 +0000 | [diff] [blame] | 506 | p = (unsigned char *)host1->h_addr_list[n++]; |
Andy Green | 0703409 | 2011-02-13 08:37:12 +0000 | [diff] [blame] | 507 | if (p == NULL) |
| 508 | continue; |
Peter Hinz | bb45a90 | 2011-03-10 18:14:01 +0000 | [diff] [blame] | 509 | if ((host1->h_addrtype != AF_INET) |
| 510 | #ifdef AF_LOCAL |
| 511 | && (host1->h_addrtype != AF_LOCAL) |
| 512 | #endif |
| 513 | ) |
Andy Green | 0703409 | 2011-02-13 08:37:12 +0000 | [diff] [blame] | 514 | continue; |
| 515 | |
Andy Green | 7627af5 | 2011-03-09 15:13:52 +0000 | [diff] [blame] | 516 | if (host1->h_addrtype == AF_INET) |
| 517 | sprintf(ip, "%u.%u.%u.%u", p[0], p[1], p[2], p[3]); |
Peter Hinz | bb45a90 | 2011-03-10 18:14:01 +0000 | [diff] [blame] | 518 | #ifdef AF_LOCAL |
Andy Green | 7627af5 | 2011-03-09 15:13:52 +0000 | [diff] [blame] | 519 | else { |
| 520 | un = (struct sockaddr_un *)p; |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 521 | strncpy(ip, un->sun_path, sizeof(ip) - 1); |
Andy Green | 7627af5 | 2011-03-09 15:13:52 +0000 | [diff] [blame] | 522 | ip[sizeof(ip) - 1] = '\0'; |
| 523 | } |
Peter Hinz | bb45a90 | 2011-03-10 18:14:01 +0000 | [diff] [blame] | 524 | #endif |
Andy Green | 0703409 | 2011-02-13 08:37:12 +0000 | [diff] [blame] | 525 | p = NULL; |
| 526 | strncpy(rip, ip, rip_len); |
| 527 | rip[rip_len - 1] = '\0'; |
| 528 | } |
Andy Green | aaf0b9f | 2013-01-30 08:12:20 +0800 | [diff] [blame] | 529 | |
| 530 | ret = 0; |
| 531 | bail: |
| 532 | lws_latency(context, wsi, "libwebsockets_get_peer_addresses", ret, 1); |
Andy Green | 0703409 | 2011-02-13 08:37:12 +0000 | [diff] [blame] | 533 | } |
Andy Green | 9f99034 | 2011-02-12 11:57:45 +0000 | [diff] [blame] | 534 | |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 535 | int libwebsockets_get_random(struct libwebsocket_context *context, |
| 536 | void *buf, int len) |
| 537 | { |
| 538 | int n; |
Aaron Zinman | 4550f1d | 2013-01-10 12:35:18 +0800 | [diff] [blame] | 539 | char *p = (char *)buf; |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 540 | |
| 541 | #ifdef WIN32 |
| 542 | for (n = 0; n < len; n++) |
| 543 | p[n] = (unsigned char)rand(); |
| 544 | #else |
| 545 | n = read(context->fd_random, p, len); |
| 546 | #endif |
| 547 | |
| 548 | return n; |
| 549 | } |
| 550 | |
Andy Green | a690cd0 | 2013-02-09 12:25:31 +0800 | [diff] [blame] | 551 | int lws_set_socket_options(struct libwebsocket_context *context, int fd) |
| 552 | { |
| 553 | int optval = 1; |
| 554 | socklen_t optlen = sizeof(optval); |
| 555 | #ifdef WIN32 |
| 556 | unsigned long optl = 0; |
| 557 | #endif |
| 558 | #if defined(__APPLE__) || defined(__FreeBSD__) || defined(__NetBSD__) |
| 559 | struct protoent *tcp_proto; |
| 560 | #endif |
| 561 | |
| 562 | if (context->ka_time) { |
| 563 | /* enable keepalive on this socket */ |
| 564 | optval = 1; |
| 565 | if (setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, |
| 566 | (const void *)&optval, optlen) < 0) |
| 567 | return 1; |
| 568 | |
Andy Green | a47865f | 2013-02-10 09:39:47 +0800 | [diff] [blame] | 569 | #if defined(__APPLE__) || defined(__FreeBSD__) || defined(__NetBSD__) |
| 570 | |
| 571 | /* |
| 572 | * didn't find a way to set these per-socket, need to |
| 573 | * tune kernel systemwide values |
| 574 | */ |
| 575 | |
| 576 | #else |
Andy Green | a690cd0 | 2013-02-09 12:25:31 +0800 | [diff] [blame] | 577 | /* set the keepalive conditions we want on it too */ |
| 578 | optval = context->ka_time; |
| 579 | if (setsockopt(fd, IPPROTO_IP, TCP_KEEPIDLE, |
| 580 | (const void *)&optval, optlen) < 0) |
| 581 | return 1; |
| 582 | |
| 583 | optval = context->ka_probes; |
| 584 | if (setsockopt(fd, IPPROTO_IP, TCP_KEEPINTVL, |
| 585 | (const void *)&optval, optlen) < 0) |
| 586 | return 1; |
| 587 | |
| 588 | optval = context->ka_interval; |
| 589 | if (setsockopt(fd, IPPROTO_IP, TCP_KEEPCNT, |
| 590 | (const void *)&optval, optlen) < 0) |
| 591 | return 1; |
Andy Green | a47865f | 2013-02-10 09:39:47 +0800 | [diff] [blame] | 592 | #endif |
Andy Green | a690cd0 | 2013-02-09 12:25:31 +0800 | [diff] [blame] | 593 | } |
| 594 | |
| 595 | /* Disable Nagle */ |
| 596 | optval = 1; |
| 597 | #if !defined(__APPLE__) && !defined(__FreeBSD__) && !defined(__NetBSD__) |
| 598 | setsockopt(fd, SOL_TCP, TCP_NODELAY, (const void *)&optval, optlen); |
| 599 | #else |
| 600 | tcp_proto = getprotobyname("TCP"); |
| 601 | setsockopt(fd, tcp_proto->p_proto, TCP_NODELAY, &optval, optlen); |
| 602 | #endif |
| 603 | |
| 604 | /* We are nonblocking... */ |
| 605 | #ifdef WIN32 |
| 606 | ioctlsocket(fd, FIONBIO, &optl); |
| 607 | #else |
| 608 | fcntl(fd, F_SETFL, O_NONBLOCK); |
| 609 | #endif |
| 610 | |
| 611 | return 0; |
| 612 | } |
| 613 | |
Andy Green | 95a7b5d | 2011-03-06 10:29:39 +0000 | [diff] [blame] | 614 | int lws_send_pipe_choked(struct libwebsocket *wsi) |
| 615 | { |
| 616 | struct pollfd fds; |
| 617 | |
| 618 | fds.fd = wsi->sock; |
| 619 | fds.events = POLLOUT; |
| 620 | fds.revents = 0; |
| 621 | |
| 622 | if (poll(&fds, 1, 0) != 1) |
| 623 | return 1; |
| 624 | |
| 625 | if ((fds.revents & POLLOUT) == 0) |
| 626 | return 1; |
| 627 | |
| 628 | /* okay to send another packet without blocking */ |
| 629 | |
| 630 | return 0; |
| 631 | } |
| 632 | |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 633 | int |
Andy Green | 3b84c00 | 2011-03-06 13:14:42 +0000 | [diff] [blame] | 634 | lws_handle_POLLOUT_event(struct libwebsocket_context *context, |
| 635 | struct libwebsocket *wsi, struct pollfd *pollfd) |
| 636 | { |
Andy Green | 3b84c00 | 2011-03-06 13:14:42 +0000 | [diff] [blame] | 637 | int n; |
Andy Green | 6f520a5 | 2013-01-29 17:57:39 +0800 | [diff] [blame] | 638 | |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 639 | #ifndef LWS_NO_EXTENSIONS |
| 640 | struct lws_tokens eff_buf; |
Andy Green | 3b84c00 | 2011-03-06 13:14:42 +0000 | [diff] [blame] | 641 | int ret; |
| 642 | int m; |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 643 | int handled = 0; |
Andy Green | 3b84c00 | 2011-03-06 13:14:42 +0000 | [diff] [blame] | 644 | |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 645 | for (n = 0; n < wsi->count_active_extensions; n++) { |
| 646 | if (!wsi->active_extensions[n]->callback) |
| 647 | continue; |
| 648 | |
| 649 | m = wsi->active_extensions[n]->callback(context, |
| 650 | wsi->active_extensions[n], wsi, |
| 651 | LWS_EXT_CALLBACK_IS_WRITEABLE, |
| 652 | wsi->active_extensions_user[n], NULL, 0); |
| 653 | if (m > handled) |
| 654 | handled = m; |
| 655 | } |
| 656 | |
| 657 | if (handled == 1) |
| 658 | goto notify_action; |
| 659 | |
| 660 | if (!wsi->extension_data_pending || handled == 2) |
Andy Green | 3b84c00 | 2011-03-06 13:14:42 +0000 | [diff] [blame] | 661 | goto user_service; |
| 662 | |
| 663 | /* |
| 664 | * check in on the active extensions, see if they |
| 665 | * had pending stuff to spill... they need to get the |
| 666 | * first look-in otherwise sequence will be disordered |
| 667 | * |
| 668 | * NULL, zero-length eff_buf means just spill pending |
| 669 | */ |
| 670 | |
| 671 | ret = 1; |
| 672 | while (ret == 1) { |
| 673 | |
| 674 | /* default to nobody has more to spill */ |
| 675 | |
| 676 | ret = 0; |
| 677 | eff_buf.token = NULL; |
| 678 | eff_buf.token_len = 0; |
| 679 | |
| 680 | /* give every extension a chance to spill */ |
| 681 | |
| 682 | for (n = 0; n < wsi->count_active_extensions; n++) { |
| 683 | m = wsi->active_extensions[n]->callback( |
Andy Green | 46c2ea0 | 2011-03-22 09:04:01 +0000 | [diff] [blame] | 684 | wsi->protocol->owning_server, |
| 685 | wsi->active_extensions[n], wsi, |
Andy Green | 3b84c00 | 2011-03-06 13:14:42 +0000 | [diff] [blame] | 686 | LWS_EXT_CALLBACK_PACKET_TX_PRESEND, |
| 687 | wsi->active_extensions_user[n], &eff_buf, 0); |
| 688 | if (m < 0) { |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 689 | lwsl_err("ext reports fatal error\n"); |
Andy Green | 3b84c00 | 2011-03-06 13:14:42 +0000 | [diff] [blame] | 690 | return -1; |
| 691 | } |
| 692 | if (m) |
| 693 | /* |
| 694 | * at least one extension told us he has more |
| 695 | * to spill, so we will go around again after |
| 696 | */ |
| 697 | ret = 1; |
| 698 | } |
| 699 | |
| 700 | /* assuming they gave us something to send, send it */ |
| 701 | |
| 702 | if (eff_buf.token_len) { |
| 703 | if (lws_issue_raw(wsi, (unsigned char *)eff_buf.token, |
| 704 | eff_buf.token_len)) |
| 705 | return -1; |
| 706 | } else |
| 707 | continue; |
| 708 | |
| 709 | /* no extension has more to spill */ |
| 710 | |
| 711 | if (!ret) |
| 712 | continue; |
| 713 | |
| 714 | /* |
| 715 | * There's more to spill from an extension, but we just sent |
| 716 | * something... did that leave the pipe choked? |
| 717 | */ |
| 718 | |
| 719 | if (!lws_send_pipe_choked(wsi)) |
| 720 | /* no we could add more */ |
| 721 | continue; |
| 722 | |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 723 | lwsl_info("choked in POLLOUT service\n"); |
Andy Green | 3b84c00 | 2011-03-06 13:14:42 +0000 | [diff] [blame] | 724 | |
| 725 | /* |
| 726 | * Yes, he's choked. Leave the POLLOUT masked on so we will |
| 727 | * come back here when he is unchoked. Don't call the user |
| 728 | * callback to enforce ordering of spilling, he'll get called |
| 729 | * when we come back here and there's nothing more to spill. |
| 730 | */ |
| 731 | |
| 732 | return 0; |
| 733 | } |
| 734 | |
| 735 | wsi->extension_data_pending = 0; |
| 736 | |
| 737 | user_service: |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 738 | #endif |
Andy Green | 3b84c00 | 2011-03-06 13:14:42 +0000 | [diff] [blame] | 739 | /* one shot */ |
| 740 | |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 741 | if (pollfd) { |
| 742 | pollfd->events &= ~POLLOUT; |
Andy Green | 3b84c00 | 2011-03-06 13:14:42 +0000 | [diff] [blame] | 743 | |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 744 | /* external POLL support via protocol 0 */ |
| 745 | context->protocols[0].callback(context, wsi, |
| 746 | LWS_CALLBACK_CLEAR_MODE_POLL_FD, |
| 747 | (void *)(long)wsi->sock, NULL, POLLOUT); |
| 748 | } |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 749 | #ifndef LWS_NO_EXTENSIONS |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 750 | notify_action: |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 751 | #endif |
Andy Green | 3b84c00 | 2011-03-06 13:14:42 +0000 | [diff] [blame] | 752 | |
Andy Green | 9e4c2b6 | 2011-03-07 20:47:39 +0000 | [diff] [blame] | 753 | if (wsi->mode == LWS_CONNMODE_WS_CLIENT) |
| 754 | n = LWS_CALLBACK_CLIENT_WRITEABLE; |
| 755 | else |
| 756 | n = LWS_CALLBACK_SERVER_WRITEABLE; |
| 757 | |
Andy Green | b8b247d | 2013-01-22 07:20:08 +0800 | [diff] [blame] | 758 | return user_callback_handle_rxflow(wsi->protocol->callback, context, |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 759 | wsi, (enum libwebsocket_callback_reasons) n, |
| 760 | wsi->user_space, NULL, 0); |
Andy Green | 3b84c00 | 2011-03-06 13:14:42 +0000 | [diff] [blame] | 761 | } |
| 762 | |
| 763 | |
| 764 | |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 765 | void |
| 766 | libwebsocket_service_timeout_check(struct libwebsocket_context *context, |
| 767 | struct libwebsocket *wsi, unsigned int sec) |
| 768 | { |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 769 | #ifndef LWS_NO_EXTENSIONS |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 770 | int n; |
| 771 | |
| 772 | /* |
| 773 | * if extensions want in on it (eg, we are a mux parent) |
| 774 | * give them a chance to service child timeouts |
| 775 | */ |
| 776 | |
| 777 | for (n = 0; n < wsi->count_active_extensions; n++) |
| 778 | wsi->active_extensions[n]->callback( |
| 779 | context, wsi->active_extensions[n], |
| 780 | wsi, LWS_EXT_CALLBACK_1HZ, |
| 781 | wsi->active_extensions_user[n], NULL, sec); |
| 782 | |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 783 | #endif |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 784 | if (!wsi->pending_timeout) |
| 785 | return; |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 786 | |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 787 | /* |
| 788 | * if we went beyond the allowed time, kill the |
| 789 | * connection |
| 790 | */ |
| 791 | |
| 792 | if (sec > wsi->pending_timeout_limit) { |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 793 | lwsl_info("TIMEDOUT WAITING\n"); |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 794 | libwebsocket_close_and_free_session(context, |
| 795 | wsi, LWS_CLOSE_STATUS_NOSTATUS); |
| 796 | } |
| 797 | } |
| 798 | |
Andy Green | 9f99034 | 2011-02-12 11:57:45 +0000 | [diff] [blame] | 799 | /** |
| 800 | * libwebsocket_service_fd() - Service polled socket with something waiting |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 801 | * @context: Websocket context |
Andy Green | 9f99034 | 2011-02-12 11:57:45 +0000 | [diff] [blame] | 802 | * @pollfd: The pollfd entry describing the socket fd and which events |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 803 | * happened. |
Andy Green | 9f99034 | 2011-02-12 11:57:45 +0000 | [diff] [blame] | 804 | * |
Andy Green | 7500617 | 2013-01-22 12:32:11 +0800 | [diff] [blame] | 805 | * This function takes a pollfd that has POLLIN or POLLOUT activity and |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 806 | * services it according to the state of the associated |
| 807 | * struct libwebsocket. |
Andy Green | 7500617 | 2013-01-22 12:32:11 +0800 | [diff] [blame] | 808 | * |
| 809 | * The one call deals with all "service" that might happen on a socket |
| 810 | * including listen accepts, http files as well as websocket protocol. |
Andy Green | 9f99034 | 2011-02-12 11:57:45 +0000 | [diff] [blame] | 811 | */ |
| 812 | |
| 813 | int |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 814 | libwebsocket_service_fd(struct libwebsocket_context *context, |
Andy Green | 0d33833 | 2011-02-12 11:57:43 +0000 | [diff] [blame] | 815 | struct pollfd *pollfd) |
Andy Green | b45993c | 2010-12-18 15:13:50 +0000 | [diff] [blame] | 816 | { |
Andy Green | a1ce6be | 2013-01-18 11:43:21 +0800 | [diff] [blame] | 817 | struct libwebsocket *wsi; |
Andy Green | b45993c | 2010-12-18 15:13:50 +0000 | [diff] [blame] | 818 | int n; |
Andy Green | 0d33833 | 2011-02-12 11:57:43 +0000 | [diff] [blame] | 819 | int m; |
Andy Green | f0b79e2 | 2013-02-10 10:46:45 +0800 | [diff] [blame] | 820 | int listen_socket_fds_index = 0; |
Andy Green | a71eafc | 2011-02-14 17:59:43 +0000 | [diff] [blame] | 821 | struct timeval tv; |
Andy Green | 6f520a5 | 2013-01-29 17:57:39 +0800 | [diff] [blame] | 822 | |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 823 | #ifndef LWS_NO_EXTENSIONS |
Andy Green | 2366b1c | 2011-03-06 13:15:31 +0000 | [diff] [blame] | 824 | int more = 1; |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 825 | #endif |
Andy Green | 98a717c | 2011-03-06 13:14:15 +0000 | [diff] [blame] | 826 | struct lws_tokens eff_buf; |
Andy Green | f0b79e2 | 2013-02-10 10:46:45 +0800 | [diff] [blame] | 827 | |
| 828 | if (context->listen_service_fd) |
| 829 | listen_socket_fds_index = context->lws_lookup[ |
| 830 | context->listen_service_fd]->position_in_fds_table; |
| 831 | |
Andy Green | a71eafc | 2011-02-14 17:59:43 +0000 | [diff] [blame] | 832 | /* |
| 833 | * you can call us with pollfd = NULL to just allow the once-per-second |
| 834 | * global timeout checks; if less than a second since the last check |
| 835 | * it returns immediately then. |
| 836 | */ |
| 837 | |
| 838 | gettimeofday(&tv, NULL); |
| 839 | |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 840 | if (context->last_timeout_check_s != tv.tv_sec) { |
| 841 | context->last_timeout_check_s = tv.tv_sec; |
Andy Green | a71eafc | 2011-02-14 17:59:43 +0000 | [diff] [blame] | 842 | |
Joakim Soderberg | 4c53123 | 2013-02-06 15:26:58 +0900 | [diff] [blame] | 843 | #ifndef WIN32 |
Andy Green | 24cba92 | 2013-01-19 13:56:10 +0800 | [diff] [blame] | 844 | /* if our parent went down, don't linger around */ |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 845 | if (context->started_with_parent && |
| 846 | kill(context->started_with_parent, 0) < 0) |
Andy Green | 24cba92 | 2013-01-19 13:56:10 +0800 | [diff] [blame] | 847 | kill(getpid(), SIGTERM); |
Joakim Soderberg | 4c53123 | 2013-02-06 15:26:58 +0900 | [diff] [blame] | 848 | #endif |
Andy Green | 24cba92 | 2013-01-19 13:56:10 +0800 | [diff] [blame] | 849 | |
Andy Green | a71eafc | 2011-02-14 17:59:43 +0000 | [diff] [blame] | 850 | /* global timeout check once per second */ |
| 851 | |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 852 | for (n = 0; n < context->fds_count; n++) { |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 853 | struct libwebsocket *new_wsi = |
| 854 | context->lws_lookup[context->fds[n].fd]; |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 855 | if (!new_wsi) |
| 856 | continue; |
| 857 | libwebsocket_service_timeout_check(context, |
| 858 | new_wsi, tv.tv_sec); |
Andy Green | a71eafc | 2011-02-14 17:59:43 +0000 | [diff] [blame] | 859 | } |
| 860 | } |
| 861 | |
| 862 | /* just here for timeout management? */ |
| 863 | |
| 864 | if (pollfd == NULL) |
| 865 | return 0; |
| 866 | |
| 867 | /* no, here to service a socket descriptor */ |
| 868 | |
Andy Green | 65b0e91 | 2013-01-16 07:59:47 +0800 | [diff] [blame] | 869 | /* |
| 870 | * deal with listen service piggybacking |
| 871 | * every listen_service_modulo services of other fds, we |
| 872 | * sneak one in to service the listen socket if there's anything waiting |
| 873 | * |
| 874 | * To handle connection storms, as found in ab, if we previously saw a |
| 875 | * pending connection here, it causes us to check again next time. |
| 876 | */ |
| 877 | |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 878 | if (context->listen_service_fd && pollfd != |
| 879 | &context->fds[listen_socket_fds_index]) { |
Andy Green | 65b0e91 | 2013-01-16 07:59:47 +0800 | [diff] [blame] | 880 | context->listen_service_count++; |
| 881 | if (context->listen_service_extraseen || |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 882 | context->listen_service_count == |
| 883 | context->listen_service_modulo) { |
Andy Green | 65b0e91 | 2013-01-16 07:59:47 +0800 | [diff] [blame] | 884 | context->listen_service_count = 0; |
| 885 | m = 1; |
| 886 | if (context->listen_service_extraseen > 5) |
| 887 | m = 2; |
| 888 | while (m--) { |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 889 | /* |
| 890 | * even with extpoll, we prepared this |
| 891 | * internal fds for listen |
| 892 | */ |
| 893 | n = poll(&context->fds[listen_socket_fds_index], |
| 894 | 1, 0); |
| 895 | if (n > 0) { /* there's a conn waiting for us */ |
| 896 | libwebsocket_service_fd(context, |
| 897 | &context-> |
| 898 | fds[listen_socket_fds_index]); |
Andy Green | 65b0e91 | 2013-01-16 07:59:47 +0800 | [diff] [blame] | 899 | context->listen_service_extraseen++; |
| 900 | } else { |
| 901 | if (context->listen_service_extraseen) |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 902 | context-> |
| 903 | listen_service_extraseen--; |
Andy Green | 65b0e91 | 2013-01-16 07:59:47 +0800 | [diff] [blame] | 904 | break; |
| 905 | } |
| 906 | } |
| 907 | } |
| 908 | |
| 909 | } |
| 910 | |
| 911 | /* okay, what we came here to do... */ |
| 912 | |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 913 | wsi = context->lws_lookup[pollfd->fd]; |
Andy Green | d280b6e | 2013-01-15 13:40:23 +0800 | [diff] [blame] | 914 | if (wsi == NULL) { |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 915 | if (pollfd->fd > 11) |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 916 | lwsl_err("unexpected NULL wsi fd=%d fds_count=%d\n", |
| 917 | pollfd->fd, context->fds_count); |
Andy Green | fa3f405 | 2012-10-07 20:40:35 +0800 | [diff] [blame] | 918 | return 0; |
Andy Green | d280b6e | 2013-01-15 13:40:23 +0800 | [diff] [blame] | 919 | } |
Andy Green | 8f037e4 | 2010-12-19 22:13:26 +0000 | [diff] [blame] | 920 | |
Andy Green | 0d33833 | 2011-02-12 11:57:43 +0000 | [diff] [blame] | 921 | switch (wsi->mode) { |
Andy Green | d280b6e | 2013-01-15 13:40:23 +0800 | [diff] [blame] | 922 | |
Andy Green | a1ce6be | 2013-01-18 11:43:21 +0800 | [diff] [blame] | 923 | #ifndef LWS_NO_SERVER |
Andy Green | d280b6e | 2013-01-15 13:40:23 +0800 | [diff] [blame] | 924 | case LWS_CONNMODE_HTTP_SERVING: |
Andy Green | 0d33833 | 2011-02-12 11:57:43 +0000 | [diff] [blame] | 925 | case LWS_CONNMODE_SERVER_LISTENER: |
Andy Green | e216071 | 2013-01-28 12:19:10 +0800 | [diff] [blame] | 926 | case LWS_CONNMODE_SSL_ACK_PENDING: |
Andy Green | a1ce6be | 2013-01-18 11:43:21 +0800 | [diff] [blame] | 927 | return lws_server_socket_service(context, wsi, pollfd); |
| 928 | #endif |
Andy Green | be93fef | 2011-02-14 20:25:43 +0000 | [diff] [blame] | 929 | |
Andy Green | 0d33833 | 2011-02-12 11:57:43 +0000 | [diff] [blame] | 930 | case LWS_CONNMODE_WS_SERVING: |
| 931 | case LWS_CONNMODE_WS_CLIENT: |
| 932 | |
| 933 | /* handle session socket closed */ |
| 934 | |
| 935 | if (pollfd->revents & (POLLERR | POLLHUP)) { |
| 936 | |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 937 | lwsl_debug("Session Socket %p (fd=%d) dead\n", |
Andy Green | 0d33833 | 2011-02-12 11:57:43 +0000 | [diff] [blame] | 938 | (void *)wsi, pollfd->fd); |
| 939 | |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 940 | libwebsocket_close_and_free_session(context, wsi, |
Andy Green | 687b018 | 2011-02-26 11:04:01 +0000 | [diff] [blame] | 941 | LWS_CLOSE_STATUS_NOSTATUS); |
Andy Green | 040d2ef | 2013-01-16 13:40:43 +0800 | [diff] [blame] | 942 | return 0; |
Andy Green | b45993c | 2010-12-18 15:13:50 +0000 | [diff] [blame] | 943 | } |
| 944 | |
Andy Green | 0d33833 | 2011-02-12 11:57:43 +0000 | [diff] [blame] | 945 | /* the guy requested a callback when it was OK to write */ |
| 946 | |
Andy Green | da527df | 2011-03-07 07:08:12 +0000 | [diff] [blame] | 947 | if ((pollfd->revents & POLLOUT) && |
| 948 | wsi->state == WSI_STATE_ESTABLISHED) |
| 949 | if (lws_handle_POLLOUT_event(context, wsi, |
| 950 | pollfd) < 0) { |
Andy Green | 16ab318 | 2013-02-10 18:02:31 +0800 | [diff] [blame] | 951 | lwsl_info("libwebsocket_service_fd: closing"); |
Andy Green | da527df | 2011-03-07 07:08:12 +0000 | [diff] [blame] | 952 | libwebsocket_close_and_free_session( |
| 953 | context, wsi, LWS_CLOSE_STATUS_NORMAL); |
Andy Green | 040d2ef | 2013-01-16 13:40:43 +0800 | [diff] [blame] | 954 | return 0; |
Andy Green | 3b84c00 | 2011-03-06 13:14:42 +0000 | [diff] [blame] | 955 | } |
Andy Green | 0d33833 | 2011-02-12 11:57:43 +0000 | [diff] [blame] | 956 | |
Andy Green | 0d33833 | 2011-02-12 11:57:43 +0000 | [diff] [blame] | 957 | |
| 958 | /* any incoming data ready? */ |
| 959 | |
| 960 | if (!(pollfd->revents & POLLIN)) |
| 961 | break; |
| 962 | |
Andy Green | b45993c | 2010-12-18 15:13:50 +0000 | [diff] [blame] | 963 | #ifdef LWS_OPENSSL_SUPPORT |
David Galeano | 7ffbe1b | 2013-01-10 10:35:32 +0800 | [diff] [blame] | 964 | read_pending: |
Andy Green | 467c7ef | 2013-01-30 12:28:34 +0800 | [diff] [blame] | 965 | if (wsi->ssl) { |
Andy Green | e84652c | 2013-02-08 13:01:02 +0800 | [diff] [blame] | 966 | eff_buf.token_len = SSL_read(wsi->ssl, |
| 967 | context->service_buffer, |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 968 | sizeof(context->service_buffer)); |
Andy Green | 467c7ef | 2013-01-30 12:28:34 +0800 | [diff] [blame] | 969 | if (!eff_buf.token_len) { |
| 970 | n = SSL_get_error(wsi->ssl, eff_buf.token_len); |
Andy Green | e84652c | 2013-02-08 13:01:02 +0800 | [diff] [blame] | 971 | lwsl_err("SSL_read returned 0 with reason %s\n", |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 972 | ERR_error_string(n, |
| 973 | (char *)context->service_buffer)); |
Andy Green | 467c7ef | 2013-01-30 12:28:34 +0800 | [diff] [blame] | 974 | } |
| 975 | } else |
Andy Green | b45993c | 2010-12-18 15:13:50 +0000 | [diff] [blame] | 976 | #endif |
Andy Green | e84652c | 2013-02-08 13:01:02 +0800 | [diff] [blame] | 977 | eff_buf.token_len = recv(pollfd->fd, |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 978 | context->service_buffer, |
| 979 | sizeof(context->service_buffer), 0); |
Andy Green | b45993c | 2010-12-18 15:13:50 +0000 | [diff] [blame] | 980 | |
Andy Green | 98a717c | 2011-03-06 13:14:15 +0000 | [diff] [blame] | 981 | if (eff_buf.token_len < 0) { |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 982 | lwsl_debug("Socket read returned %d\n", |
Andy Green | 98a717c | 2011-03-06 13:14:15 +0000 | [diff] [blame] | 983 | eff_buf.token_len); |
Alon Levy | dc93b7f | 2012-10-19 11:21:57 +0200 | [diff] [blame] | 984 | if (errno != EINTR && errno != EAGAIN) |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 985 | libwebsocket_close_and_free_session(context, |
| 986 | wsi, LWS_CLOSE_STATUS_NOSTATUS); |
Andy Green | 040d2ef | 2013-01-16 13:40:43 +0800 | [diff] [blame] | 987 | return 0; |
Andy Green | b45993c | 2010-12-18 15:13:50 +0000 | [diff] [blame] | 988 | } |
Andy Green | 98a717c | 2011-03-06 13:14:15 +0000 | [diff] [blame] | 989 | if (!eff_buf.token_len) { |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 990 | lwsl_info("closing connection due to 0 length read\n"); |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 991 | libwebsocket_close_and_free_session(context, wsi, |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 992 | LWS_CLOSE_STATUS_NOSTATUS); |
Andy Green | fa3f405 | 2012-10-07 20:40:35 +0800 | [diff] [blame] | 993 | return 0; |
Andy Green | b45993c | 2010-12-18 15:13:50 +0000 | [diff] [blame] | 994 | } |
| 995 | |
Andy Green | 98a717c | 2011-03-06 13:14:15 +0000 | [diff] [blame] | 996 | /* |
| 997 | * give any active extensions a chance to munge the buffer |
| 998 | * before parse. We pass in a pointer to an lws_tokens struct |
| 999 | * prepared with the default buffer and content length that's in |
| 1000 | * there. Rather than rewrite the default buffer, extensions |
| 1001 | * that expect to grow the buffer can adapt .token to |
| 1002 | * point to their own per-connection buffer in the extension |
| 1003 | * user allocation. By default with no extensions or no |
| 1004 | * extension callback handling, just the normal input buffer is |
| 1005 | * used then so it is efficient. |
| 1006 | */ |
Andy Green | b45993c | 2010-12-18 15:13:50 +0000 | [diff] [blame] | 1007 | |
Andy Green | e84652c | 2013-02-08 13:01:02 +0800 | [diff] [blame] | 1008 | eff_buf.token = (char *)context->service_buffer; |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 1009 | #ifndef LWS_NO_EXTENSIONS |
Andy Green | 98a717c | 2011-03-06 13:14:15 +0000 | [diff] [blame] | 1010 | more = 1; |
| 1011 | while (more) { |
Andy Green | 0d33833 | 2011-02-12 11:57:43 +0000 | [diff] [blame] | 1012 | |
Andy Green | 98a717c | 2011-03-06 13:14:15 +0000 | [diff] [blame] | 1013 | more = 0; |
| 1014 | |
| 1015 | for (n = 0; n < wsi->count_active_extensions; n++) { |
Andy Green | 46c2ea0 | 2011-03-22 09:04:01 +0000 | [diff] [blame] | 1016 | m = wsi->active_extensions[n]->callback(context, |
| 1017 | wsi->active_extensions[n], wsi, |
Andy Green | 98a717c | 2011-03-06 13:14:15 +0000 | [diff] [blame] | 1018 | LWS_EXT_CALLBACK_PACKET_RX_PREPARSE, |
Andy Green | 46c2ea0 | 2011-03-22 09:04:01 +0000 | [diff] [blame] | 1019 | wsi->active_extensions_user[n], |
| 1020 | &eff_buf, 0); |
Andy Green | 98a717c | 2011-03-06 13:14:15 +0000 | [diff] [blame] | 1021 | if (m < 0) { |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 1022 | lwsl_ext( |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 1023 | "Extension reports fatal error\n"); |
| 1024 | libwebsocket_close_and_free_session( |
| 1025 | context, wsi, |
| 1026 | LWS_CLOSE_STATUS_NOSTATUS); |
Andy Green | 040d2ef | 2013-01-16 13:40:43 +0800 | [diff] [blame] | 1027 | return 0; |
Andy Green | 98a717c | 2011-03-06 13:14:15 +0000 | [diff] [blame] | 1028 | } |
| 1029 | if (m) |
| 1030 | more = 1; |
| 1031 | } |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 1032 | #endif |
Andy Green | 98a717c | 2011-03-06 13:14:15 +0000 | [diff] [blame] | 1033 | /* service incoming data */ |
| 1034 | |
| 1035 | if (eff_buf.token_len) { |
| 1036 | n = libwebsocket_read(context, wsi, |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 1037 | (unsigned char *)eff_buf.token, |
| 1038 | eff_buf.token_len); |
Andy Green | 98a717c | 2011-03-06 13:14:15 +0000 | [diff] [blame] | 1039 | if (n < 0) |
| 1040 | /* we closed wsi */ |
Andy Green | 040d2ef | 2013-01-16 13:40:43 +0800 | [diff] [blame] | 1041 | return 0; |
Andy Green | 98a717c | 2011-03-06 13:14:15 +0000 | [diff] [blame] | 1042 | } |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 1043 | #ifndef LWS_NO_EXTENSIONS |
Andy Green | 98a717c | 2011-03-06 13:14:15 +0000 | [diff] [blame] | 1044 | eff_buf.token = NULL; |
| 1045 | eff_buf.token_len = 0; |
| 1046 | } |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 1047 | #endif |
David Galeano | 7ffbe1b | 2013-01-10 10:35:32 +0800 | [diff] [blame] | 1048 | |
| 1049 | #ifdef LWS_OPENSSL_SUPPORT |
| 1050 | if (wsi->ssl && SSL_pending(wsi->ssl)) |
| 1051 | goto read_pending; |
| 1052 | #endif |
Andy Green | 98a717c | 2011-03-06 13:14:15 +0000 | [diff] [blame] | 1053 | break; |
Andy Green | 76f61e7 | 2013-01-16 11:53:05 +0800 | [diff] [blame] | 1054 | |
| 1055 | default: |
Andy Green | 03674a6 | 2013-01-16 11:47:40 +0800 | [diff] [blame] | 1056 | #ifdef LWS_NO_CLIENT |
| 1057 | break; |
| 1058 | #else |
Andy Green | 76f61e7 | 2013-01-16 11:53:05 +0800 | [diff] [blame] | 1059 | return lws_client_socket_service(context, wsi, pollfd); |
Andy Green | 03674a6 | 2013-01-16 11:47:40 +0800 | [diff] [blame] | 1060 | #endif |
Andy Green | b45993c | 2010-12-18 15:13:50 +0000 | [diff] [blame] | 1061 | } |
| 1062 | |
| 1063 | return 0; |
| 1064 | } |
| 1065 | |
Andy Green | 0d33833 | 2011-02-12 11:57:43 +0000 | [diff] [blame] | 1066 | |
Andy Green | 6964bb5 | 2011-01-23 16:50:33 +0000 | [diff] [blame] | 1067 | /** |
| 1068 | * libwebsocket_context_destroy() - Destroy the websocket context |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1069 | * @context: Websocket context |
Andy Green | 6964bb5 | 2011-01-23 16:50:33 +0000 | [diff] [blame] | 1070 | * |
| 1071 | * This function closes any active connections and then frees the |
| 1072 | * context. After calling this, any further use of the context is |
| 1073 | * undefined. |
| 1074 | */ |
| 1075 | void |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1076 | libwebsocket_context_destroy(struct libwebsocket_context *context) |
Andy Green | 6964bb5 | 2011-01-23 16:50:33 +0000 | [diff] [blame] | 1077 | { |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 1078 | #ifndef LWS_NO_EXTENSIONS |
Andy Green | 0d33833 | 2011-02-12 11:57:43 +0000 | [diff] [blame] | 1079 | int n; |
| 1080 | int m; |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 1081 | struct libwebsocket_extension *ext; |
Andy Green | a7109e6 | 2013-02-11 12:05:54 +0800 | [diff] [blame] | 1082 | struct libwebsocket_protocols *protocol = context->protocols; |
Andy Green | 6964bb5 | 2011-01-23 16:50:33 +0000 | [diff] [blame] | 1083 | |
Andy Green | d636e35 | 2013-01-29 12:36:17 +0800 | [diff] [blame] | 1084 | #ifdef LWS_LATENCY |
| 1085 | if (context->worst_latency_info[0]) |
| 1086 | lwsl_notice("Worst latency: %s\n", context->worst_latency_info); |
| 1087 | #endif |
| 1088 | |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 1089 | for (n = 0; n < context->fds_count; n++) { |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1090 | struct libwebsocket *wsi = |
| 1091 | context->lws_lookup[context->fds[n].fd]; |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 1092 | libwebsocket_close_and_free_session(context, |
Andy Green | 7b92205 | 2013-02-11 11:43:05 +0800 | [diff] [blame] | 1093 | wsi, LWS_CLOSE_STATUS_NOSTATUS /* no protocol close */); |
| 1094 | n--; |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 1095 | } |
Andy Green | 6964bb5 | 2011-01-23 16:50:33 +0000 | [diff] [blame] | 1096 | |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 1097 | /* |
| 1098 | * give all extensions a chance to clean up any per-context |
| 1099 | * allocations they might have made |
| 1100 | */ |
| 1101 | |
| 1102 | ext = context->extensions; |
| 1103 | m = LWS_EXT_CALLBACK_CLIENT_CONTEXT_DESTRUCT; |
| 1104 | if (context->listen_port) |
| 1105 | m = LWS_EXT_CALLBACK_SERVER_CONTEXT_DESTRUCT; |
Paulo Roberto Urio | 1f680ab | 2012-06-04 08:40:28 +0800 | [diff] [blame] | 1106 | while (ext && ext->callback) { |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1107 | ext->callback(context, ext, NULL, |
| 1108 | (enum libwebsocket_extension_callback_reasons)m, |
| 1109 | NULL, NULL, 0); |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 1110 | ext++; |
| 1111 | } |
Andy Green | a7109e6 | 2013-02-11 12:05:54 +0800 | [diff] [blame] | 1112 | |
| 1113 | /* |
| 1114 | * inform all the protocols that they are done and will have no more |
| 1115 | * callbacks |
| 1116 | */ |
| 1117 | |
| 1118 | while (protocol->callback) { |
| 1119 | protocol->callback(context, NULL, LWS_CALLBACK_PROTOCOL_DESTROY, |
| 1120 | NULL, NULL, 0); |
| 1121 | protocol++; |
| 1122 | } |
| 1123 | |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 1124 | #endif |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 1125 | |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1126 | #ifdef WIN32 |
| 1127 | #else |
| 1128 | close(context->fd_random); |
Andy Green | 6964bb5 | 2011-01-23 16:50:33 +0000 | [diff] [blame] | 1129 | #endif |
| 1130 | |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1131 | #ifdef LWS_OPENSSL_SUPPORT |
| 1132 | if (context->ssl_ctx) |
| 1133 | SSL_CTX_free(context->ssl_ctx); |
| 1134 | if (context->ssl_client_ctx) |
| 1135 | SSL_CTX_free(context->ssl_client_ctx); |
Andy Green | ad68639 | 2013-02-11 14:50:45 +0800 | [diff] [blame] | 1136 | |
| 1137 | ERR_remove_state(0); |
| 1138 | ERR_free_strings(); |
| 1139 | EVP_cleanup(); |
| 1140 | CRYPTO_cleanup_all_ex_data(); |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1141 | #endif |
| 1142 | |
Andy Green | 4659648 | 2013-02-11 11:04:01 +0800 | [diff] [blame] | 1143 | if (context->fds) |
| 1144 | free(context->fds); |
| 1145 | if (context->lws_lookup) |
| 1146 | free(context->lws_lookup); |
| 1147 | |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1148 | free(context); |
| 1149 | |
| 1150 | #ifdef WIN32 |
| 1151 | WSACleanup(); |
| 1152 | #endif |
Andy Green | 6964bb5 | 2011-01-23 16:50:33 +0000 | [diff] [blame] | 1153 | } |
| 1154 | |
Andy Green | d88146d | 2013-01-22 12:40:35 +0800 | [diff] [blame] | 1155 | /** |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1156 | * libwebsocket_context_user() - get the user data associated with the context |
Andy Green | d88146d | 2013-01-22 12:40:35 +0800 | [diff] [blame] | 1157 | * @context: Websocket context |
| 1158 | * |
| 1159 | * This returns the optional user allocation that can be attached to |
| 1160 | * the context the sockets live in at context_create time. It's a way |
| 1161 | * to let all sockets serviced in the same context share data without |
| 1162 | * using globals statics in the user code. |
| 1163 | */ |
Alon Levy | 0291eb3 | 2012-10-19 11:21:56 +0200 | [diff] [blame] | 1164 | LWS_EXTERN void * |
| 1165 | libwebsocket_context_user(struct libwebsocket_context *context) |
| 1166 | { |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1167 | return context->user_space; |
Alon Levy | 0291eb3 | 2012-10-19 11:21:56 +0200 | [diff] [blame] | 1168 | } |
| 1169 | |
Andy Green | 6964bb5 | 2011-01-23 16:50:33 +0000 | [diff] [blame] | 1170 | /** |
| 1171 | * libwebsocket_service() - Service any pending websocket activity |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1172 | * @context: Websocket context |
Andy Green | 6964bb5 | 2011-01-23 16:50:33 +0000 | [diff] [blame] | 1173 | * @timeout_ms: Timeout for poll; 0 means return immediately if nothing needed |
| 1174 | * service otherwise block and service immediately, returning |
| 1175 | * after the timeout if nothing needed service. |
| 1176 | * |
| 1177 | * This function deals with any pending websocket traffic, for three |
| 1178 | * kinds of event. It handles these events on both server and client |
| 1179 | * types of connection the same. |
| 1180 | * |
| 1181 | * 1) Accept new connections to our context's server |
| 1182 | * |
Andy Green | 6f520a5 | 2013-01-29 17:57:39 +0800 | [diff] [blame] | 1183 | * 2) Call the receive callback for incoming frame data received by |
Andy Green | 6964bb5 | 2011-01-23 16:50:33 +0000 | [diff] [blame] | 1184 | * server or client connections. |
| 1185 | * |
| 1186 | * You need to call this service function periodically to all the above |
| 1187 | * functions to happen; if your application is single-threaded you can |
| 1188 | * just call it in your main event loop. |
| 1189 | * |
| 1190 | * Alternatively you can fork a new process that asynchronously handles |
| 1191 | * calling this service in a loop. In that case you are happy if this |
| 1192 | * call blocks your thread until it needs to take care of something and |
| 1193 | * would call it with a large nonzero timeout. Your loop then takes no |
| 1194 | * CPU while there is nothing happening. |
| 1195 | * |
| 1196 | * If you are calling it in a single-threaded app, you don't want it to |
| 1197 | * wait around blocking other things in your loop from happening, so you |
| 1198 | * would call it with a timeout_ms of 0, so it returns immediately if |
| 1199 | * nothing is pending, or as soon as it services whatever was pending. |
| 1200 | */ |
| 1201 | |
Andy Green | e92cd17 | 2011-01-19 13:11:55 +0000 | [diff] [blame] | 1202 | int |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1203 | libwebsocket_service(struct libwebsocket_context *context, int timeout_ms) |
Andy Green | e92cd17 | 2011-01-19 13:11:55 +0000 | [diff] [blame] | 1204 | { |
| 1205 | int n; |
Andy Green | e92cd17 | 2011-01-19 13:11:55 +0000 | [diff] [blame] | 1206 | |
| 1207 | /* stay dead once we are dead */ |
| 1208 | |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1209 | if (context == NULL) |
Andy Green | e92cd17 | 2011-01-19 13:11:55 +0000 | [diff] [blame] | 1210 | return 1; |
| 1211 | |
Andy Green | 0d33833 | 2011-02-12 11:57:43 +0000 | [diff] [blame] | 1212 | /* wait for something to need service */ |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 1213 | |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1214 | n = poll(context->fds, context->fds_count, timeout_ms); |
Andy Green | 3221f92 | 2011-02-12 13:14:11 +0000 | [diff] [blame] | 1215 | if (n == 0) /* poll timeout */ |
| 1216 | return 0; |
Andy Green | e92cd17 | 2011-01-19 13:11:55 +0000 | [diff] [blame] | 1217 | |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 1218 | if (n < 0) |
Andy Green | 3928f61 | 2012-07-20 12:58:38 +0800 | [diff] [blame] | 1219 | return -1; |
Andy Green | e92cd17 | 2011-01-19 13:11:55 +0000 | [diff] [blame] | 1220 | |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 1221 | /* any socket with events to service? */ |
Andy Green | e92cd17 | 2011-01-19 13:11:55 +0000 | [diff] [blame] | 1222 | |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1223 | for (n = 0; n < context->fds_count; n++) |
| 1224 | if (context->fds[n].revents) |
Andy Green | 3928f61 | 2012-07-20 12:58:38 +0800 | [diff] [blame] | 1225 | if (libwebsocket_service_fd(context, |
| 1226 | &context->fds[n]) < 0) |
| 1227 | return -1; |
Andy Green | e92cd17 | 2011-01-19 13:11:55 +0000 | [diff] [blame] | 1228 | return 0; |
Andy Green | e92cd17 | 2011-01-19 13:11:55 +0000 | [diff] [blame] | 1229 | } |
| 1230 | |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 1231 | #ifndef LWS_NO_EXTENSIONS |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 1232 | int |
| 1233 | lws_any_extension_handled(struct libwebsocket_context *context, |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 1234 | struct libwebsocket *wsi, |
| 1235 | enum libwebsocket_extension_callback_reasons r, |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 1236 | void *v, size_t len) |
| 1237 | { |
| 1238 | int n; |
| 1239 | int handled = 0; |
| 1240 | |
| 1241 | /* maybe an extension will take care of it for us */ |
| 1242 | |
| 1243 | for (n = 0; n < wsi->count_active_extensions && !handled; n++) { |
| 1244 | if (!wsi->active_extensions[n]->callback) |
| 1245 | continue; |
| 1246 | |
| 1247 | handled |= wsi->active_extensions[n]->callback(context, |
| 1248 | wsi->active_extensions[n], wsi, |
| 1249 | r, wsi->active_extensions_user[n], v, len); |
| 1250 | } |
| 1251 | |
| 1252 | return handled; |
| 1253 | } |
| 1254 | |
| 1255 | |
| 1256 | void * |
| 1257 | lws_get_extension_user_matching_ext(struct libwebsocket *wsi, |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 1258 | struct libwebsocket_extension *ext) |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 1259 | { |
| 1260 | int n = 0; |
| 1261 | |
Andy Green | 68b4504 | 2011-05-25 21:41:57 +0100 | [diff] [blame] | 1262 | if (wsi == NULL) |
| 1263 | return NULL; |
| 1264 | |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 1265 | while (n < wsi->count_active_extensions) { |
| 1266 | if (wsi->active_extensions[n] != ext) { |
| 1267 | n++; |
| 1268 | continue; |
| 1269 | } |
| 1270 | return wsi->active_extensions_user[n]; |
| 1271 | } |
| 1272 | |
| 1273 | return NULL; |
| 1274 | } |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 1275 | #endif |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 1276 | |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 1277 | /** |
| 1278 | * libwebsocket_callback_on_writable() - Request a callback when this socket |
| 1279 | * becomes able to be written to without |
| 1280 | * blocking |
Andy Green | 32375b7 | 2011-02-19 08:32:53 +0000 | [diff] [blame] | 1281 | * |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1282 | * @context: libwebsockets context |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 1283 | * @wsi: Websocket connection instance to get callback for |
| 1284 | */ |
| 1285 | |
| 1286 | int |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1287 | libwebsocket_callback_on_writable(struct libwebsocket_context *context, |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 1288 | struct libwebsocket *wsi) |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 1289 | { |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 1290 | #ifndef LWS_NO_EXTENSIONS |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 1291 | int n; |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 1292 | int handled = 0; |
| 1293 | |
| 1294 | /* maybe an extension will take care of it for us */ |
| 1295 | |
| 1296 | for (n = 0; n < wsi->count_active_extensions; n++) { |
| 1297 | if (!wsi->active_extensions[n]->callback) |
| 1298 | continue; |
| 1299 | |
| 1300 | handled |= wsi->active_extensions[n]->callback(context, |
| 1301 | wsi->active_extensions[n], wsi, |
| 1302 | LWS_EXT_CALLBACK_REQUEST_ON_WRITEABLE, |
| 1303 | wsi->active_extensions_user[n], NULL, 0); |
| 1304 | } |
| 1305 | |
| 1306 | if (handled) |
| 1307 | return 1; |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 1308 | #endif |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 1309 | if (wsi->position_in_fds_table < 0) { |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1310 | lwsl_err("libwebsocket_callback_on_writable: failed to find socket %d\n", |
| 1311 | wsi->sock); |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 1312 | return -1; |
| 1313 | } |
| 1314 | |
| 1315 | context->fds[wsi->position_in_fds_table].events |= POLLOUT; |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 1316 | |
Andy Green | 3221f92 | 2011-02-12 13:14:11 +0000 | [diff] [blame] | 1317 | /* external POLL support via protocol 0 */ |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1318 | context->protocols[0].callback(context, wsi, |
Andy Green | 3221f92 | 2011-02-12 13:14:11 +0000 | [diff] [blame] | 1319 | LWS_CALLBACK_SET_MODE_POLL_FD, |
| 1320 | (void *)(long)wsi->sock, NULL, POLLOUT); |
| 1321 | |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 1322 | return 1; |
| 1323 | } |
| 1324 | |
| 1325 | /** |
| 1326 | * libwebsocket_callback_on_writable_all_protocol() - Request a callback for |
| 1327 | * all connections using the given protocol when it |
| 1328 | * becomes possible to write to each socket without |
| 1329 | * blocking in turn. |
| 1330 | * |
| 1331 | * @protocol: Protocol whose connections will get callbacks |
| 1332 | */ |
| 1333 | |
| 1334 | int |
| 1335 | libwebsocket_callback_on_writable_all_protocol( |
| 1336 | const struct libwebsocket_protocols *protocol) |
| 1337 | { |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1338 | struct libwebsocket_context *context = protocol->owning_server; |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 1339 | int n; |
Andy Green | 0d33833 | 2011-02-12 11:57:43 +0000 | [diff] [blame] | 1340 | struct libwebsocket *wsi; |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 1341 | |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 1342 | for (n = 0; n < context->fds_count; n++) { |
| 1343 | wsi = context->lws_lookup[context->fds[n].fd]; |
| 1344 | if (!wsi) |
| 1345 | continue; |
| 1346 | if (wsi->protocol == protocol) |
| 1347 | libwebsocket_callback_on_writable(context, wsi); |
Andy Green | 0d33833 | 2011-02-12 11:57:43 +0000 | [diff] [blame] | 1348 | } |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 1349 | |
| 1350 | return 0; |
| 1351 | } |
| 1352 | |
Andy Green | be93fef | 2011-02-14 20:25:43 +0000 | [diff] [blame] | 1353 | /** |
| 1354 | * libwebsocket_set_timeout() - marks the wsi as subject to a timeout |
| 1355 | * |
| 1356 | * You will not need this unless you are doing something special |
| 1357 | * |
| 1358 | * @wsi: Websocket connection instance |
| 1359 | * @reason: timeout reason |
| 1360 | * @secs: how many seconds |
| 1361 | */ |
| 1362 | |
| 1363 | void |
| 1364 | libwebsocket_set_timeout(struct libwebsocket *wsi, |
| 1365 | enum pending_timeout reason, int secs) |
| 1366 | { |
| 1367 | struct timeval tv; |
| 1368 | |
| 1369 | gettimeofday(&tv, NULL); |
| 1370 | |
| 1371 | wsi->pending_timeout_limit = tv.tv_sec + secs; |
| 1372 | wsi->pending_timeout = reason; |
| 1373 | } |
| 1374 | |
Andy Green | a6cbece | 2011-01-27 20:06:03 +0000 | [diff] [blame] | 1375 | |
| 1376 | /** |
| 1377 | * libwebsocket_get_socket_fd() - returns the socket file descriptor |
| 1378 | * |
| 1379 | * You will not need this unless you are doing something special |
| 1380 | * |
| 1381 | * @wsi: Websocket connection instance |
| 1382 | */ |
| 1383 | |
| 1384 | int |
| 1385 | libwebsocket_get_socket_fd(struct libwebsocket *wsi) |
| 1386 | { |
| 1387 | return wsi->sock; |
| 1388 | } |
| 1389 | |
Andy Green | d636e35 | 2013-01-29 12:36:17 +0800 | [diff] [blame] | 1390 | #ifdef LWS_LATENCY |
| 1391 | void |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1392 | lws_latency(struct libwebsocket_context *context, struct libwebsocket *wsi, |
| 1393 | const char *action, int ret, int completed) |
Andy Green | d636e35 | 2013-01-29 12:36:17 +0800 | [diff] [blame] | 1394 | { |
| 1395 | struct timeval tv; |
| 1396 | unsigned long u; |
| 1397 | char buf[256]; |
| 1398 | |
| 1399 | gettimeofday(&tv, NULL); |
| 1400 | |
| 1401 | u = (tv.tv_sec * 1000000) + tv.tv_usec; |
| 1402 | |
| 1403 | if (action) { |
| 1404 | if (completed) { |
| 1405 | if (wsi->action_start == wsi->latency_start) |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1406 | sprintf(buf, |
| 1407 | "Completion first try lat %luus: %p: ret %d: %s\n", |
| 1408 | u - wsi->latency_start, |
| 1409 | (void *)wsi, ret, action); |
Andy Green | d636e35 | 2013-01-29 12:36:17 +0800 | [diff] [blame] | 1410 | else |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1411 | sprintf(buf, |
| 1412 | "Completion %luus: lat %luus: %p: ret %d: %s\n", |
| 1413 | u - wsi->action_start, |
| 1414 | u - wsi->latency_start, |
| 1415 | (void *)wsi, ret, action); |
Andy Green | d636e35 | 2013-01-29 12:36:17 +0800 | [diff] [blame] | 1416 | wsi->action_start = 0; |
| 1417 | } else |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1418 | sprintf(buf, "lat %luus: %p: ret %d: %s\n", |
| 1419 | u - wsi->latency_start, |
| 1420 | (void *)wsi, ret, action); |
Andy Green | d636e35 | 2013-01-29 12:36:17 +0800 | [diff] [blame] | 1421 | if (u - wsi->latency_start > context->worst_latency) { |
| 1422 | context->worst_latency = u - wsi->latency_start; |
| 1423 | strcpy(context->worst_latency_info, buf); |
| 1424 | } |
| 1425 | lwsl_latency("%s", buf); |
| 1426 | } else { |
| 1427 | wsi->latency_start = u; |
| 1428 | if (!wsi->action_start) |
| 1429 | wsi->action_start = u; |
| 1430 | } |
| 1431 | } |
| 1432 | #endif |
| 1433 | |
Andy Green | a1ce6be | 2013-01-18 11:43:21 +0800 | [diff] [blame] | 1434 | #ifdef LWS_NO_SERVER |
| 1435 | int |
| 1436 | _libwebsocket_rx_flow_control(struct libwebsocket *wsi) |
| 1437 | { |
| 1438 | return 0; |
| 1439 | } |
| 1440 | #else |
Andy Green | 706961d | 2013-01-17 16:50:35 +0800 | [diff] [blame] | 1441 | int |
| 1442 | _libwebsocket_rx_flow_control(struct libwebsocket *wsi) |
| 1443 | { |
| 1444 | struct libwebsocket_context *context = wsi->protocol->owning_server; |
| 1445 | int n; |
| 1446 | |
Andy Green | 623a98d | 2013-01-21 11:04:23 +0800 | [diff] [blame] | 1447 | if (!(wsi->u.ws.rxflow_change_to & 2)) |
Andy Green | 706961d | 2013-01-17 16:50:35 +0800 | [diff] [blame] | 1448 | return 0; |
| 1449 | |
Andy Green | 623a98d | 2013-01-21 11:04:23 +0800 | [diff] [blame] | 1450 | wsi->u.ws.rxflow_change_to &= ~2; |
Andy Green | 706961d | 2013-01-17 16:50:35 +0800 | [diff] [blame] | 1451 | |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1452 | lwsl_info("rxflow: wsi %p change_to %d\n", |
| 1453 | wsi, wsi->u.ws.rxflow_change_to); |
Andy Green | 706961d | 2013-01-17 16:50:35 +0800 | [diff] [blame] | 1454 | |
| 1455 | /* if we're letting it come again, did we interrupt anything? */ |
Andy Green | 623a98d | 2013-01-21 11:04:23 +0800 | [diff] [blame] | 1456 | if ((wsi->u.ws.rxflow_change_to & 1) && wsi->u.ws.rxflow_buffer) { |
Andy Green | 706961d | 2013-01-17 16:50:35 +0800 | [diff] [blame] | 1457 | n = libwebsocket_interpret_incoming_packet(wsi, NULL, 0); |
| 1458 | if (n < 0) { |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1459 | lwsl_info("libwebsocket_rx_flow_control: close req\n"); |
Andy Green | 706961d | 2013-01-17 16:50:35 +0800 | [diff] [blame] | 1460 | return -1; |
| 1461 | } |
| 1462 | if (n) |
| 1463 | /* oh he stuck again, do nothing */ |
| 1464 | return 0; |
| 1465 | } |
| 1466 | |
Andy Green | 623a98d | 2013-01-21 11:04:23 +0800 | [diff] [blame] | 1467 | if (wsi->u.ws.rxflow_change_to & 1) |
Andy Green | 706961d | 2013-01-17 16:50:35 +0800 | [diff] [blame] | 1468 | context->fds[wsi->position_in_fds_table].events |= POLLIN; |
| 1469 | else |
| 1470 | context->fds[wsi->position_in_fds_table].events &= ~POLLIN; |
| 1471 | |
Andy Green | 623a98d | 2013-01-21 11:04:23 +0800 | [diff] [blame] | 1472 | if (wsi->u.ws.rxflow_change_to & 1) |
Andy Green | 706961d | 2013-01-17 16:50:35 +0800 | [diff] [blame] | 1473 | /* external POLL support via protocol 0 */ |
| 1474 | context->protocols[0].callback(context, wsi, |
| 1475 | LWS_CALLBACK_SET_MODE_POLL_FD, |
| 1476 | (void *)(long)wsi->sock, NULL, POLLIN); |
| 1477 | else |
| 1478 | /* external POLL support via protocol 0 */ |
| 1479 | context->protocols[0].callback(context, wsi, |
| 1480 | LWS_CALLBACK_CLEAR_MODE_POLL_FD, |
| 1481 | (void *)(long)wsi->sock, NULL, POLLIN); |
| 1482 | |
| 1483 | return 1; |
| 1484 | } |
Andy Green | a1ce6be | 2013-01-18 11:43:21 +0800 | [diff] [blame] | 1485 | #endif |
Andy Green | 706961d | 2013-01-17 16:50:35 +0800 | [diff] [blame] | 1486 | |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 1487 | /** |
| 1488 | * libwebsocket_rx_flow_control() - Enable and disable socket servicing for |
| 1489 | * receieved packets. |
| 1490 | * |
| 1491 | * If the output side of a server process becomes choked, this allows flow |
| 1492 | * control for the input side. |
| 1493 | * |
| 1494 | * @wsi: Websocket connection instance to get callback for |
| 1495 | * @enable: 0 = disable read servicing for this connection, 1 = enable |
| 1496 | */ |
| 1497 | |
| 1498 | int |
| 1499 | libwebsocket_rx_flow_control(struct libwebsocket *wsi, int enable) |
| 1500 | { |
Andy Green | 623a98d | 2013-01-21 11:04:23 +0800 | [diff] [blame] | 1501 | wsi->u.ws.rxflow_change_to = 2 | !!enable; |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 1502 | |
Andy Green | 706961d | 2013-01-17 16:50:35 +0800 | [diff] [blame] | 1503 | return 0; |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 1504 | } |
| 1505 | |
Andy Green | 706961d | 2013-01-17 16:50:35 +0800 | [diff] [blame] | 1506 | |
Andy Green | 2ac5a6f | 2011-01-28 10:00:18 +0000 | [diff] [blame] | 1507 | /** |
| 1508 | * libwebsocket_canonical_hostname() - returns this host's hostname |
| 1509 | * |
| 1510 | * This is typically used by client code to fill in the host parameter |
| 1511 | * when making a client connection. You can only call it after the context |
| 1512 | * has been created. |
| 1513 | * |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1514 | * @context: Websocket context |
Andy Green | 2ac5a6f | 2011-01-28 10:00:18 +0000 | [diff] [blame] | 1515 | */ |
| 1516 | |
| 1517 | |
| 1518 | extern const char * |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1519 | libwebsocket_canonical_hostname(struct libwebsocket_context *context) |
Andy Green | 2ac5a6f | 2011-01-28 10:00:18 +0000 | [diff] [blame] | 1520 | { |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1521 | return (const char *)context->canonical_hostname; |
Andy Green | 2ac5a6f | 2011-01-28 10:00:18 +0000 | [diff] [blame] | 1522 | } |
| 1523 | |
| 1524 | |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 1525 | static void sigpipe_handler(int x) |
| 1526 | { |
| 1527 | } |
| 1528 | |
Andy Green | 6901cb3 | 2011-02-21 08:06:47 +0000 | [diff] [blame] | 1529 | #ifdef LWS_OPENSSL_SUPPORT |
| 1530 | static int |
| 1531 | OpenSSL_verify_callback(int preverify_ok, X509_STORE_CTX *x509_ctx) |
| 1532 | { |
| 1533 | |
| 1534 | SSL *ssl; |
| 1535 | int n; |
Andy Green | 2e24da0 | 2011-03-05 16:12:04 +0000 | [diff] [blame] | 1536 | struct libwebsocket_context *context; |
Andy Green | 6901cb3 | 2011-02-21 08:06:47 +0000 | [diff] [blame] | 1537 | |
| 1538 | ssl = X509_STORE_CTX_get_ex_data(x509_ctx, |
| 1539 | SSL_get_ex_data_X509_STORE_CTX_idx()); |
| 1540 | |
| 1541 | /* |
Andy Green | 2e24da0 | 2011-03-05 16:12:04 +0000 | [diff] [blame] | 1542 | * !!! nasty openssl requires the index to come as a library-scope |
| 1543 | * static |
Andy Green | 6901cb3 | 2011-02-21 08:06:47 +0000 | [diff] [blame] | 1544 | */ |
Andy Green | 2e24da0 | 2011-03-05 16:12:04 +0000 | [diff] [blame] | 1545 | context = SSL_get_ex_data(ssl, openssl_websocket_private_data_index); |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 1546 | |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1547 | n = context->protocols[0].callback(NULL, NULL, |
Andy Green | 6901cb3 | 2011-02-21 08:06:47 +0000 | [diff] [blame] | 1548 | LWS_CALLBACK_OPENSSL_PERFORM_CLIENT_CERT_VERIFICATION, |
| 1549 | x509_ctx, ssl, preverify_ok); |
| 1550 | |
| 1551 | /* convert return code from 0 = OK to 1 = OK */ |
| 1552 | |
| 1553 | if (!n) |
| 1554 | n = 1; |
| 1555 | else |
| 1556 | n = 0; |
| 1557 | |
| 1558 | return n; |
| 1559 | } |
| 1560 | #endif |
| 1561 | |
Andy Green | 706961d | 2013-01-17 16:50:35 +0800 | [diff] [blame] | 1562 | int user_callback_handle_rxflow(callback_function callback_function, |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1563 | struct libwebsocket_context *context, |
Andy Green | 706961d | 2013-01-17 16:50:35 +0800 | [diff] [blame] | 1564 | struct libwebsocket *wsi, |
| 1565 | enum libwebsocket_callback_reasons reason, void *user, |
| 1566 | void *in, size_t len) |
| 1567 | { |
| 1568 | int n; |
| 1569 | |
| 1570 | n = callback_function(context, wsi, reason, user, in, len); |
Andy Green | aedc953 | 2013-02-10 21:21:24 +0800 | [diff] [blame] | 1571 | if (!n) |
| 1572 | n = _libwebsocket_rx_flow_control(wsi); |
Andy Green | 706961d | 2013-01-17 16:50:35 +0800 | [diff] [blame] | 1573 | |
Andy Green | aedc953 | 2013-02-10 21:21:24 +0800 | [diff] [blame] | 1574 | return n; |
Andy Green | 706961d | 2013-01-17 16:50:35 +0800 | [diff] [blame] | 1575 | } |
| 1576 | |
Andy Green | b45993c | 2010-12-18 15:13:50 +0000 | [diff] [blame] | 1577 | |
Andy Green | ab990e4 | 2010-10-31 12:42:52 +0000 | [diff] [blame] | 1578 | /** |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 1579 | * libwebsocket_create_context() - Create the websocket handler |
Andy Green | 1b26527 | 2013-02-09 14:01:09 +0800 | [diff] [blame] | 1580 | * @info: pointer to struct with parameters |
Andy Green | 05464c6 | 2010-11-12 10:44:18 +0000 | [diff] [blame] | 1581 | * |
Andy Green | 1b26527 | 2013-02-09 14:01:09 +0800 | [diff] [blame] | 1582 | * This function creates the listening socket (if serving) and takes care |
Andy Green | 8f037e4 | 2010-12-19 22:13:26 +0000 | [diff] [blame] | 1583 | * of all initialization in one step. |
| 1584 | * |
Andy Green | e92cd17 | 2011-01-19 13:11:55 +0000 | [diff] [blame] | 1585 | * After initialization, it returns a struct libwebsocket_context * that |
| 1586 | * represents this server. After calling, user code needs to take care |
| 1587 | * of calling libwebsocket_service() with the context pointer to get the |
| 1588 | * server's sockets serviced. This can be done in the same process context |
| 1589 | * or a forked process, or another thread, |
Andy Green | 05464c6 | 2010-11-12 10:44:18 +0000 | [diff] [blame] | 1590 | * |
Andy Green | 8f037e4 | 2010-12-19 22:13:26 +0000 | [diff] [blame] | 1591 | * The protocol callback functions are called for a handful of events |
| 1592 | * including http requests coming in, websocket connections becoming |
| 1593 | * established, and data arriving; it's also called periodically to allow |
| 1594 | * async transmission. |
| 1595 | * |
| 1596 | * HTTP requests are sent always to the FIRST protocol in @protocol, since |
| 1597 | * at that time websocket protocol has not been negotiated. Other |
| 1598 | * protocols after the first one never see any HTTP callack activity. |
| 1599 | * |
| 1600 | * The server created is a simple http server by default; part of the |
| 1601 | * websocket standard is upgrading this http connection to a websocket one. |
| 1602 | * |
| 1603 | * This allows the same server to provide files like scripts and favicon / |
| 1604 | * images or whatever over http and dynamic data over websockets all in |
| 1605 | * one place; they're all handled in the user callback. |
Andy Green | ab990e4 | 2010-10-31 12:42:52 +0000 | [diff] [blame] | 1606 | */ |
Andy Green | 4ea6006 | 2010-10-30 12:15:07 +0100 | [diff] [blame] | 1607 | |
Andy Green | e92cd17 | 2011-01-19 13:11:55 +0000 | [diff] [blame] | 1608 | struct libwebsocket_context * |
Andy Green | 1b26527 | 2013-02-09 14:01:09 +0800 | [diff] [blame] | 1609 | libwebsocket_create_context(struct lws_context_creation_info *info) |
Andy Green | ff95d7a | 2010-10-28 22:36:01 +0100 | [diff] [blame] | 1610 | { |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1611 | struct libwebsocket_context *context = NULL; |
Andy Green | 9659f37 | 2011-01-27 22:01:43 +0000 | [diff] [blame] | 1612 | char *p; |
Andy Green | cbb3122 | 2013-01-31 09:57:05 +0800 | [diff] [blame] | 1613 | #ifndef LWS_NO_SERVER |
Andy Green | 14f4729 | 2013-02-11 19:36:15 +0800 | [diff] [blame^] | 1614 | int n; |
Andy Green | cbb3122 | 2013-01-31 09:57:05 +0800 | [diff] [blame] | 1615 | int opt = 1; |
Andy Green | 0d33833 | 2011-02-12 11:57:43 +0000 | [diff] [blame] | 1616 | struct libwebsocket *wsi; |
Andy Green | cbb3122 | 2013-01-31 09:57:05 +0800 | [diff] [blame] | 1617 | struct sockaddr_in serv_addr; |
| 1618 | #endif |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 1619 | #ifndef LWS_NO_EXTENSIONS |
| 1620 | int m; |
Andy Green | 1b26527 | 2013-02-09 14:01:09 +0800 | [diff] [blame] | 1621 | struct libwebsocket_extension *ext; |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 1622 | #endif |
Andy Green | ff95d7a | 2010-10-28 22:36:01 +0100 | [diff] [blame] | 1623 | |
Andy Green | 3faa9c7 | 2010-11-08 17:03:03 +0000 | [diff] [blame] | 1624 | #ifdef LWS_OPENSSL_SUPPORT |
Andy Green | f2f54d5 | 2010-11-15 22:08:00 +0000 | [diff] [blame] | 1625 | SSL_METHOD *method; |
Andy Green | 3faa9c7 | 2010-11-08 17:03:03 +0000 | [diff] [blame] | 1626 | #endif |
| 1627 | |
Joakim Soderberg | 4c53123 | 2013-02-06 15:26:58 +0900 | [diff] [blame] | 1628 | #ifndef LWS_NO_DAEMONIZE |
Joakim Söderberg | 68e8d73 | 2013-02-06 15:27:39 +0900 | [diff] [blame] | 1629 | int pid_daemon = get_daemonize_pid(); |
Joakim Soderberg | 4c53123 | 2013-02-06 15:26:58 +0900 | [diff] [blame] | 1630 | #endif |
| 1631 | |
Andy Green | b3a614a | 2013-01-19 13:08:17 +0800 | [diff] [blame] | 1632 | lwsl_notice("Initial logging level %d\n", log_level); |
Andy Green | 7b40545 | 2013-02-01 10:50:15 +0800 | [diff] [blame] | 1633 | lwsl_notice("Library version: %s\n", library_version); |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1634 | lwsl_info(" LWS_MAX_HEADER_NAME_LENGTH: %u\n", |
| 1635 | LWS_MAX_HEADER_NAME_LENGTH); |
Andy Green | c0d6b63 | 2013-01-12 23:42:17 +0800 | [diff] [blame] | 1636 | lwsl_info(" LWS_MAX_HEADER_LEN: %u\n", LWS_MAX_HEADER_LEN); |
Andy Green | c0d6b63 | 2013-01-12 23:42:17 +0800 | [diff] [blame] | 1637 | lwsl_info(" LWS_MAX_PROTOCOLS: %u\n", LWS_MAX_PROTOCOLS); |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 1638 | #ifndef LWS_NO_EXTENSIONS |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1639 | lwsl_info(" LWS_MAX_EXTENSIONS_ACTIVE: %u\n", |
| 1640 | LWS_MAX_EXTENSIONS_ACTIVE); |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 1641 | #else |
| 1642 | lwsl_notice(" Configured without extension support\n"); |
| 1643 | #endif |
Andy Green | c0d6b63 | 2013-01-12 23:42:17 +0800 | [diff] [blame] | 1644 | lwsl_info(" SPEC_LATEST_SUPPORTED: %u\n", SPEC_LATEST_SUPPORTED); |
| 1645 | lwsl_info(" AWAITING_TIMEOUT: %u\n", AWAITING_TIMEOUT); |
| 1646 | lwsl_info(" CIPHERS_LIST_STRING: '%s'\n", CIPHERS_LIST_STRING); |
| 1647 | lwsl_info(" SYSTEM_RANDOM_FILEPATH: '%s'\n", SYSTEM_RANDOM_FILEPATH); |
| 1648 | lwsl_info(" LWS_MAX_ZLIB_CONN_BUFFER: %u\n", LWS_MAX_ZLIB_CONN_BUFFER); |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 1649 | |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1650 | #ifdef _WIN32 |
| 1651 | { |
| 1652 | WORD wVersionRequested; |
| 1653 | WSADATA wsaData; |
| 1654 | int err; |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 1655 | HMODULE wsdll; |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1656 | |
| 1657 | /* Use the MAKEWORD(lowbyte, highbyte) macro from Windef.h */ |
| 1658 | wVersionRequested = MAKEWORD(2, 2); |
| 1659 | |
| 1660 | err = WSAStartup(wVersionRequested, &wsaData); |
| 1661 | if (err != 0) { |
| 1662 | /* Tell the user that we could not find a usable */ |
| 1663 | /* Winsock DLL. */ |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 1664 | lwsl_err("WSAStartup failed with error: %d\n", err); |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1665 | return NULL; |
| 1666 | } |
David Galeano | 7b11fec | 2011-10-04 19:55:18 +0800 | [diff] [blame] | 1667 | |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 1668 | /* default to a poll() made out of select() */ |
| 1669 | poll = emulated_poll; |
David Galeano | 7b11fec | 2011-10-04 19:55:18 +0800 | [diff] [blame] | 1670 | |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 1671 | /* if windows socket lib available, use his WSAPoll */ |
David Galeano | cb19368 | 2013-01-09 15:29:00 +0800 | [diff] [blame] | 1672 | wsdll = GetModuleHandle(_T("Ws2_32.dll")); |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 1673 | if (wsdll) |
| 1674 | poll = (PFNWSAPOLL)GetProcAddress(wsdll, "WSAPoll"); |
Joakim Soderberg | 4c53123 | 2013-02-06 15:26:58 +0900 | [diff] [blame] | 1675 | |
Joakim Söderberg | 68e8d73 | 2013-02-06 15:27:39 +0900 | [diff] [blame] | 1676 | /* Finally fall back to emulated poll if all else fails */ |
Joakim Soderberg | 4c53123 | 2013-02-06 15:26:58 +0900 | [diff] [blame] | 1677 | if (!poll) |
| 1678 | poll = emulated_poll; |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1679 | } |
| 1680 | #endif |
| 1681 | |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1682 | context = (struct libwebsocket_context *) |
| 1683 | malloc(sizeof(struct libwebsocket_context)); |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1684 | if (!context) { |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 1685 | lwsl_err("No memory for websocket context\n"); |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 1686 | return NULL; |
| 1687 | } |
Peter Pentchev | 3b233cb | 2013-02-07 16:31:19 +0200 | [diff] [blame] | 1688 | memset(context, 0, sizeof(*context)); |
Andy Green | 35f332b | 2013-01-21 13:06:38 +0800 | [diff] [blame] | 1689 | #ifndef LWS_NO_DAEMONIZE |
Andy Green | 24cba92 | 2013-01-19 13:56:10 +0800 | [diff] [blame] | 1690 | context->started_with_parent = pid_daemon; |
| 1691 | lwsl_notice(" Started with daemon pid %d\n", pid_daemon); |
| 1692 | #endif |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1693 | |
Joakim Soderberg | 4c53123 | 2013-02-06 15:26:58 +0900 | [diff] [blame] | 1694 | context->listen_service_extraseen = 0; |
Andy Green | 1b26527 | 2013-02-09 14:01:09 +0800 | [diff] [blame] | 1695 | context->protocols = info->protocols; |
| 1696 | context->listen_port = info->port; |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1697 | context->http_proxy_port = 0; |
| 1698 | context->http_proxy_address[0] = '\0'; |
Andy Green | 1b26527 | 2013-02-09 14:01:09 +0800 | [diff] [blame] | 1699 | context->options = info->options; |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 1700 | /* to reduce this allocation, */ |
| 1701 | context->max_fds = getdtablesize(); |
Andy Green | a86f634 | 2013-02-11 11:04:56 +0800 | [diff] [blame] | 1702 | lwsl_notice(" static allocation: %u + (%u x %u fds) = %u bytes\n", |
| 1703 | sizeof(struct libwebsocket_context), |
| 1704 | sizeof(struct pollfd) + sizeof(struct libwebsocket *), |
| 1705 | context->max_fds, |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1706 | sizeof(struct libwebsocket_context) + |
| 1707 | ((sizeof(struct pollfd) + sizeof(struct libwebsocket *)) * |
| 1708 | context->max_fds)); |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 1709 | |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1710 | context->fds = (struct pollfd *)malloc(sizeof(struct pollfd) * |
| 1711 | context->max_fds); |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 1712 | if (context->fds == NULL) { |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1713 | lwsl_err("Unable to allocate fds array for %d connections\n", |
| 1714 | context->max_fds); |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 1715 | free(context); |
| 1716 | return NULL; |
| 1717 | } |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1718 | context->lws_lookup = (struct libwebsocket **) |
| 1719 | malloc(sizeof(struct libwebsocket *) * context->max_fds); |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 1720 | if (context->lws_lookup == NULL) { |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1721 | lwsl_err( |
| 1722 | "Unable to allocate lws_lookup array for %d connections\n", |
| 1723 | context->max_fds); |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 1724 | free(context->fds); |
| 1725 | free(context); |
| 1726 | return NULL; |
| 1727 | } |
Andy Green | a17c692 | 2013-01-20 20:21:54 +0800 | [diff] [blame] | 1728 | |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1729 | context->fds_count = 0; |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 1730 | #ifndef LWS_NO_EXTENSIONS |
Andy Green | 1b26527 | 2013-02-09 14:01:09 +0800 | [diff] [blame] | 1731 | context->extensions = info->extensions; |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 1732 | #endif |
Paulo Roberto Urio | 1e32663 | 2012-06-04 10:52:19 +0800 | [diff] [blame] | 1733 | context->last_timeout_check_s = 0; |
Andy Green | 1b26527 | 2013-02-09 14:01:09 +0800 | [diff] [blame] | 1734 | context->user_space = info->user; |
Andy Green | 9659f37 | 2011-01-27 22:01:43 +0000 | [diff] [blame] | 1735 | |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1736 | #ifdef WIN32 |
| 1737 | context->fd_random = 0; |
| 1738 | #else |
| 1739 | context->fd_random = open(SYSTEM_RANDOM_FILEPATH, O_RDONLY); |
| 1740 | if (context->fd_random < 0) { |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 1741 | lwsl_err("Unable to open random device %s %d\n", |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1742 | SYSTEM_RANDOM_FILEPATH, context->fd_random); |
Peter Pentchev | 3b233cb | 2013-02-07 16:31:19 +0200 | [diff] [blame] | 1743 | goto bail; |
Andy Green | 44eee68 | 2011-02-10 09:32:24 +0000 | [diff] [blame] | 1744 | } |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1745 | #endif |
Andy Green | 44eee68 | 2011-02-10 09:32:24 +0000 | [diff] [blame] | 1746 | |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1747 | #ifdef LWS_OPENSSL_SUPPORT |
| 1748 | context->use_ssl = 0; |
| 1749 | context->ssl_ctx = NULL; |
| 1750 | context->ssl_client_ctx = NULL; |
Andy Green | 2e24da0 | 2011-03-05 16:12:04 +0000 | [diff] [blame] | 1751 | openssl_websocket_private_data_index = 0; |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1752 | #endif |
Andy Green | 2ac5a6f | 2011-01-28 10:00:18 +0000 | [diff] [blame] | 1753 | |
Andy Green | a1ce6be | 2013-01-18 11:43:21 +0800 | [diff] [blame] | 1754 | strcpy(context->canonical_hostname, "unknown"); |
Andy Green | a69f051 | 2012-05-03 12:32:38 +0800 | [diff] [blame] | 1755 | |
Andy Green | a1ce6be | 2013-01-18 11:43:21 +0800 | [diff] [blame] | 1756 | #ifndef LWS_NO_SERVER |
Andy Green | 1b26527 | 2013-02-09 14:01:09 +0800 | [diff] [blame] | 1757 | if (!(info->options & LWS_SERVER_OPTION_SKIP_SERVER_CANONICAL_NAME)) { |
Andy Green | a1ce6be | 2013-01-18 11:43:21 +0800 | [diff] [blame] | 1758 | struct sockaddr sa; |
Andy Green | e310b0c | 2013-02-10 15:10:10 +0800 | [diff] [blame] | 1759 | context->service_buffer[0] = '\0'; |
Andy Green | 788c4a8 | 2012-10-22 12:29:57 +0100 | [diff] [blame] | 1760 | |
| 1761 | /* find canonical hostname */ |
| 1762 | |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1763 | context->service_buffer[ |
| 1764 | sizeof(context->service_buffer) - 1] = '\0'; |
Andy Green | 788c4a8 | 2012-10-22 12:29:57 +0100 | [diff] [blame] | 1765 | memset(&sa, 0, sizeof(sa)); |
| 1766 | sa.sa_family = AF_INET; |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1767 | sa.sa_data[sizeof(sa.sa_data) - 1] = '\0'; |
| 1768 | gethostname((char *)context->service_buffer, |
| 1769 | sizeof(context->service_buffer) - 1); |
Andy Green | 788c4a8 | 2012-10-22 12:29:57 +0100 | [diff] [blame] | 1770 | |
| 1771 | n = 0; |
| 1772 | |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1773 | if (strlen((char *)context->service_buffer) < |
| 1774 | sizeof(sa.sa_data) - 1) { |
Andy Green | e310b0c | 2013-02-10 15:10:10 +0800 | [diff] [blame] | 1775 | strcpy(sa.sa_data, (char *)context->service_buffer); |
Andy Green | d09d7d4 | 2013-01-31 10:05:43 +0800 | [diff] [blame] | 1776 | lwsl_debug("my host name is %s\n", sa.sa_data); |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1777 | n = getnameinfo(&sa, sizeof(sa), |
| 1778 | (char *)context->service_buffer, |
| 1779 | sizeof(context->service_buffer) - 1, |
| 1780 | NULL, 0, NI_NAMEREQD); |
Andy Green | 788c4a8 | 2012-10-22 12:29:57 +0100 | [diff] [blame] | 1781 | } |
| 1782 | |
| 1783 | if (!n) { |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1784 | strncpy(context->canonical_hostname, |
| 1785 | (char *)context->service_buffer, |
| 1786 | sizeof(context->canonical_hostname) - 1); |
Andy Green | 788c4a8 | 2012-10-22 12:29:57 +0100 | [diff] [blame] | 1787 | context->canonical_hostname[ |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1788 | sizeof(context->canonical_hostname) - 1] = '\0'; |
Andy Green | 788c4a8 | 2012-10-22 12:29:57 +0100 | [diff] [blame] | 1789 | } else |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1790 | strncpy(context->canonical_hostname, |
| 1791 | (char *)context->service_buffer, |
| 1792 | sizeof(context->canonical_hostname) - 1); |
Andy Green | 788c4a8 | 2012-10-22 12:29:57 +0100 | [diff] [blame] | 1793 | |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1794 | lwsl_notice(" canonical_hostname = %s\n", |
| 1795 | context->canonical_hostname); |
Andy Green | a69f051 | 2012-05-03 12:32:38 +0800 | [diff] [blame] | 1796 | } |
Andy Green | a1ce6be | 2013-01-18 11:43:21 +0800 | [diff] [blame] | 1797 | #endif |
Andy Green | a69f051 | 2012-05-03 12:32:38 +0800 | [diff] [blame] | 1798 | |
Andy Green | 9659f37 | 2011-01-27 22:01:43 +0000 | [diff] [blame] | 1799 | /* split the proxy ads:port if given */ |
| 1800 | |
| 1801 | p = getenv("http_proxy"); |
| 1802 | if (p) { |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1803 | strncpy(context->http_proxy_address, p, |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1804 | sizeof(context->http_proxy_address) - 1); |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1805 | context->http_proxy_address[ |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1806 | sizeof(context->http_proxy_address) - 1] = '\0'; |
Andy Green | 9659f37 | 2011-01-27 22:01:43 +0000 | [diff] [blame] | 1807 | |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1808 | p = strchr(context->http_proxy_address, ':'); |
Andy Green | 9659f37 | 2011-01-27 22:01:43 +0000 | [diff] [blame] | 1809 | if (p == NULL) { |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 1810 | lwsl_err("http_proxy needs to be ads:port\n"); |
Peter Pentchev | 3b233cb | 2013-02-07 16:31:19 +0200 | [diff] [blame] | 1811 | goto bail; |
Andy Green | 9659f37 | 2011-01-27 22:01:43 +0000 | [diff] [blame] | 1812 | } |
| 1813 | *p = '\0'; |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1814 | context->http_proxy_port = atoi(p + 1); |
Andy Green | 9659f37 | 2011-01-27 22:01:43 +0000 | [diff] [blame] | 1815 | |
Andy Green | b3a614a | 2013-01-19 13:08:17 +0800 | [diff] [blame] | 1816 | lwsl_notice(" Proxy %s:%u\n", |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1817 | context->http_proxy_address, |
| 1818 | context->http_proxy_port); |
Andy Green | 9659f37 | 2011-01-27 22:01:43 +0000 | [diff] [blame] | 1819 | } |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 1820 | |
Andy Green | a1ce6be | 2013-01-18 11:43:21 +0800 | [diff] [blame] | 1821 | #ifndef LWS_NO_SERVER |
Andy Green | 1b26527 | 2013-02-09 14:01:09 +0800 | [diff] [blame] | 1822 | if (info->port) { |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 1823 | |
Andy Green | 3faa9c7 | 2010-11-08 17:03:03 +0000 | [diff] [blame] | 1824 | #ifdef LWS_OPENSSL_SUPPORT |
Andy Green | 1b26527 | 2013-02-09 14:01:09 +0800 | [diff] [blame] | 1825 | context->use_ssl = info->ssl_cert_filepath != NULL && |
| 1826 | info->ssl_private_key_filepath != NULL; |
Andy Green | 23c5f2e | 2013-02-06 15:43:00 +0900 | [diff] [blame] | 1827 | #ifdef USE_CYASSL |
| 1828 | lwsl_notice(" Compiled with CYASSL support\n"); |
| 1829 | #else |
| 1830 | lwsl_notice(" Compiled with OpenSSL support\n"); |
| 1831 | #endif |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1832 | if (context->use_ssl) |
Andy Green | 23c5f2e | 2013-02-06 15:43:00 +0900 | [diff] [blame] | 1833 | lwsl_notice(" Using SSL mode\n"); |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 1834 | else |
Andy Green | 23c5f2e | 2013-02-06 15:43:00 +0900 | [diff] [blame] | 1835 | lwsl_notice(" Using non-SSL mode\n"); |
Andy Green | 3faa9c7 | 2010-11-08 17:03:03 +0000 | [diff] [blame] | 1836 | |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 1837 | #else |
Andy Green | 2b40b79 | 2013-02-10 22:22:01 +0800 | [diff] [blame] | 1838 | if (info->ssl_cert_filepath != NULL && |
| 1839 | info->ssl_private_key_filepath != NULL) { |
Andy Green | b3a614a | 2013-01-19 13:08:17 +0800 | [diff] [blame] | 1840 | lwsl_notice(" Not compiled for OpenSSl support!\n"); |
Peter Pentchev | 3b233cb | 2013-02-07 16:31:19 +0200 | [diff] [blame] | 1841 | goto bail; |
Andy Green | 3faa9c7 | 2010-11-08 17:03:03 +0000 | [diff] [blame] | 1842 | } |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1843 | lwsl_notice(" Compiled without SSL support\n"); |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 1844 | #endif |
Andy Green | a17c692 | 2013-01-20 20:21:54 +0800 | [diff] [blame] | 1845 | |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1846 | lwsl_notice( |
| 1847 | " per-conn mem: %u + %u headers + protocol rx buf\n", |
| 1848 | sizeof(struct libwebsocket), |
| 1849 | sizeof(struct allocated_headers)); |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 1850 | } |
Andy Green | a1ce6be | 2013-01-18 11:43:21 +0800 | [diff] [blame] | 1851 | #endif |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 1852 | |
| 1853 | /* ignore SIGPIPE */ |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1854 | #ifdef WIN32 |
| 1855 | #else |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 1856 | signal(SIGPIPE, sigpipe_handler); |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1857 | #endif |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 1858 | |
| 1859 | |
| 1860 | #ifdef LWS_OPENSSL_SUPPORT |
| 1861 | |
| 1862 | /* basic openssl init */ |
| 1863 | |
| 1864 | SSL_library_init(); |
| 1865 | |
| 1866 | OpenSSL_add_all_algorithms(); |
| 1867 | SSL_load_error_strings(); |
| 1868 | |
Andy Green | 2e24da0 | 2011-03-05 16:12:04 +0000 | [diff] [blame] | 1869 | openssl_websocket_private_data_index = |
Andy Green | 6901cb3 | 2011-02-21 08:06:47 +0000 | [diff] [blame] | 1870 | SSL_get_ex_new_index(0, "libwebsockets", NULL, NULL, NULL); |
| 1871 | |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 1872 | /* |
| 1873 | * Firefox insists on SSLv23 not SSLv3 |
| 1874 | * Konq disables SSLv2 by default now, SSLv23 works |
| 1875 | */ |
| 1876 | |
| 1877 | method = (SSL_METHOD *)SSLv23_server_method(); |
| 1878 | if (!method) { |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 1879 | lwsl_err("problem creating ssl method: %s\n", |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1880 | ERR_error_string(ERR_get_error(), |
| 1881 | (char *)context->service_buffer)); |
Peter Pentchev | 3b233cb | 2013-02-07 16:31:19 +0200 | [diff] [blame] | 1882 | goto bail; |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 1883 | } |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1884 | context->ssl_ctx = SSL_CTX_new(method); /* create context */ |
| 1885 | if (!context->ssl_ctx) { |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 1886 | lwsl_err("problem creating ssl context: %s\n", |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1887 | ERR_error_string(ERR_get_error(), |
| 1888 | (char *)context->service_buffer)); |
Peter Pentchev | 3b233cb | 2013-02-07 16:31:19 +0200 | [diff] [blame] | 1889 | goto bail; |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 1890 | } |
| 1891 | |
David Galeano | cc148e4 | 2013-01-10 10:18:59 +0800 | [diff] [blame] | 1892 | #ifdef SSL_OP_NO_COMPRESSION |
David Galeano | c72f6f9 | 2013-01-10 10:11:57 +0800 | [diff] [blame] | 1893 | SSL_CTX_set_options(context->ssl_ctx, SSL_OP_NO_COMPRESSION); |
David Galeano | cc148e4 | 2013-01-10 10:18:59 +0800 | [diff] [blame] | 1894 | #endif |
David Galeano | 77a677c | 2013-01-10 10:14:12 +0800 | [diff] [blame] | 1895 | SSL_CTX_set_options(context->ssl_ctx, SSL_OP_CIPHER_SERVER_PREFERENCE); |
David Galeano | f177f2a | 2013-01-10 10:15:19 +0800 | [diff] [blame] | 1896 | SSL_CTX_set_cipher_list(context->ssl_ctx, CIPHERS_LIST_STRING); |
David Galeano | c72f6f9 | 2013-01-10 10:11:57 +0800 | [diff] [blame] | 1897 | |
Andy Green | a1ce6be | 2013-01-18 11:43:21 +0800 | [diff] [blame] | 1898 | #ifndef LWS_NO_CLIENT |
| 1899 | |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 1900 | /* client context */ |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 1901 | |
Andy Green | 1b26527 | 2013-02-09 14:01:09 +0800 | [diff] [blame] | 1902 | if (info->port == CONTEXT_PORT_NO_LISTEN) { |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1903 | method = (SSL_METHOD *)SSLv23_client_method(); |
| 1904 | if (!method) { |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 1905 | lwsl_err("problem creating ssl method: %s\n", |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1906 | ERR_error_string(ERR_get_error(), |
| 1907 | (char *)context->service_buffer)); |
Peter Pentchev | 3b233cb | 2013-02-07 16:31:19 +0200 | [diff] [blame] | 1908 | goto bail; |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1909 | } |
| 1910 | /* create context */ |
| 1911 | context->ssl_client_ctx = SSL_CTX_new(method); |
| 1912 | if (!context->ssl_client_ctx) { |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 1913 | lwsl_err("problem creating ssl context: %s\n", |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1914 | ERR_error_string(ERR_get_error(), |
| 1915 | (char *)context->service_buffer)); |
Peter Pentchev | 3b233cb | 2013-02-07 16:31:19 +0200 | [diff] [blame] | 1916 | goto bail; |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1917 | } |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 1918 | |
David Galeano | cc148e4 | 2013-01-10 10:18:59 +0800 | [diff] [blame] | 1919 | #ifdef SSL_OP_NO_COMPRESSION |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1920 | SSL_CTX_set_options(context->ssl_client_ctx, |
| 1921 | SSL_OP_NO_COMPRESSION); |
David Galeano | cc148e4 | 2013-01-10 10:18:59 +0800 | [diff] [blame] | 1922 | #endif |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1923 | SSL_CTX_set_options(context->ssl_client_ctx, |
| 1924 | SSL_OP_CIPHER_SERVER_PREFERENCE); |
| 1925 | SSL_CTX_set_cipher_list(context->ssl_client_ctx, |
| 1926 | CIPHERS_LIST_STRING); |
David Galeano | c72f6f9 | 2013-01-10 10:11:57 +0800 | [diff] [blame] | 1927 | |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1928 | /* openssl init for cert verification (for client sockets) */ |
Andy Green | 1b26527 | 2013-02-09 14:01:09 +0800 | [diff] [blame] | 1929 | if (!info->ssl_ca_filepath) { |
David Galeano | 2f82be8 | 2013-01-09 16:25:54 +0800 | [diff] [blame] | 1930 | if (!SSL_CTX_load_verify_locations( |
| 1931 | context->ssl_client_ctx, NULL, |
| 1932 | LWS_OPENSSL_CLIENT_CERTS)) |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 1933 | lwsl_err( |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1934 | "Unable to load SSL Client certs from %s " |
| 1935 | "(set by --with-client-cert-dir= " |
| 1936 | "in configure) -- client ssl isn't " |
| 1937 | "going to work", LWS_OPENSSL_CLIENT_CERTS); |
David Galeano | 2f82be8 | 2013-01-09 16:25:54 +0800 | [diff] [blame] | 1938 | } else |
| 1939 | if (!SSL_CTX_load_verify_locations( |
Andy Green | 1b26527 | 2013-02-09 14:01:09 +0800 | [diff] [blame] | 1940 | context->ssl_client_ctx, info->ssl_ca_filepath, |
David Galeano | 2f82be8 | 2013-01-09 16:25:54 +0800 | [diff] [blame] | 1941 | NULL)) |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 1942 | lwsl_err( |
David Galeano | 2f82be8 | 2013-01-09 16:25:54 +0800 | [diff] [blame] | 1943 | "Unable to load SSL Client certs " |
| 1944 | "file from %s -- client ssl isn't " |
Andy Green | 1b26527 | 2013-02-09 14:01:09 +0800 | [diff] [blame] | 1945 | "going to work", info->ssl_ca_filepath); |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1946 | |
| 1947 | /* |
| 1948 | * callback allowing user code to load extra verification certs |
| 1949 | * helping the client to verify server identity |
| 1950 | */ |
| 1951 | |
| 1952 | context->protocols[0].callback(context, NULL, |
| 1953 | LWS_CALLBACK_OPENSSL_LOAD_EXTRA_CLIENT_VERIFY_CERTS, |
| 1954 | context->ssl_client_ctx, NULL, 0); |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 1955 | } |
Andy Green | a1ce6be | 2013-01-18 11:43:21 +0800 | [diff] [blame] | 1956 | #endif |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 1957 | |
Andy Green | c6bf2c2 | 2011-02-20 11:10:47 +0000 | [diff] [blame] | 1958 | /* as a server, are we requiring clients to identify themselves? */ |
| 1959 | |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1960 | if (info->options & |
| 1961 | LWS_SERVER_OPTION_REQUIRE_VALID_OPENSSL_CLIENT_CERT) { |
Andy Green | c6bf2c2 | 2011-02-20 11:10:47 +0000 | [diff] [blame] | 1962 | |
| 1963 | /* absolutely require the client cert */ |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 1964 | |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1965 | SSL_CTX_set_verify(context->ssl_ctx, |
Andy Green | 6901cb3 | 2011-02-21 08:06:47 +0000 | [diff] [blame] | 1966 | SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT, |
| 1967 | OpenSSL_verify_callback); |
Andy Green | c6bf2c2 | 2011-02-20 11:10:47 +0000 | [diff] [blame] | 1968 | |
| 1969 | /* |
| 1970 | * give user code a chance to load certs into the server |
| 1971 | * allowing it to verify incoming client certs |
| 1972 | */ |
| 1973 | |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1974 | context->protocols[0].callback(context, NULL, |
Andy Green | c6bf2c2 | 2011-02-20 11:10:47 +0000 | [diff] [blame] | 1975 | LWS_CALLBACK_OPENSSL_LOAD_EXTRA_SERVER_VERIFY_CERTS, |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1976 | context->ssl_ctx, NULL, 0); |
Andy Green | c6bf2c2 | 2011-02-20 11:10:47 +0000 | [diff] [blame] | 1977 | } |
| 1978 | |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1979 | if (context->use_ssl) { |
Andy Green | 90c7cbc | 2011-01-27 06:26:52 +0000 | [diff] [blame] | 1980 | |
| 1981 | /* openssl init for server sockets */ |
| 1982 | |
Andy Green | 3faa9c7 | 2010-11-08 17:03:03 +0000 | [diff] [blame] | 1983 | /* set the local certificate from CertFile */ |
David Galeano | 9b3d4b2 | 2013-01-10 10:11:21 +0800 | [diff] [blame] | 1984 | n = SSL_CTX_use_certificate_chain_file(context->ssl_ctx, |
Andy Green | 1b26527 | 2013-02-09 14:01:09 +0800 | [diff] [blame] | 1985 | info->ssl_cert_filepath); |
Andy Green | 3faa9c7 | 2010-11-08 17:03:03 +0000 | [diff] [blame] | 1986 | if (n != 1) { |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 1987 | lwsl_err("problem getting cert '%s': %s\n", |
Andy Green | 1b26527 | 2013-02-09 14:01:09 +0800 | [diff] [blame] | 1988 | info->ssl_cert_filepath, |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1989 | ERR_error_string(ERR_get_error(), |
| 1990 | (char *)context->service_buffer)); |
Peter Pentchev | 3b233cb | 2013-02-07 16:31:19 +0200 | [diff] [blame] | 1991 | goto bail; |
Andy Green | 3faa9c7 | 2010-11-08 17:03:03 +0000 | [diff] [blame] | 1992 | } |
| 1993 | /* set the private key from KeyFile */ |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 1994 | if (SSL_CTX_use_PrivateKey_file(context->ssl_ctx, |
Andy Green | 1b26527 | 2013-02-09 14:01:09 +0800 | [diff] [blame] | 1995 | info->ssl_private_key_filepath, |
| 1996 | SSL_FILETYPE_PEM) != 1) { |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 1997 | lwsl_err("ssl problem getting key '%s': %s\n", |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 1998 | info->ssl_private_key_filepath, |
| 1999 | ERR_error_string(ERR_get_error(), |
| 2000 | (char *)context->service_buffer)); |
Peter Pentchev | 3b233cb | 2013-02-07 16:31:19 +0200 | [diff] [blame] | 2001 | goto bail; |
Andy Green | 3faa9c7 | 2010-11-08 17:03:03 +0000 | [diff] [blame] | 2002 | } |
| 2003 | /* verify private key */ |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 2004 | if (!SSL_CTX_check_private_key(context->ssl_ctx)) { |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 2005 | lwsl_err("Private SSL key doesn't match cert\n"); |
Peter Pentchev | 3b233cb | 2013-02-07 16:31:19 +0200 | [diff] [blame] | 2006 | goto bail; |
Andy Green | 3faa9c7 | 2010-11-08 17:03:03 +0000 | [diff] [blame] | 2007 | } |
| 2008 | |
| 2009 | /* SSL is happy and has a cert it's content with */ |
| 2010 | } |
| 2011 | #endif |
Andy Green | b45993c | 2010-12-18 15:13:50 +0000 | [diff] [blame] | 2012 | |
Andy Green | df73616 | 2011-01-18 15:39:02 +0000 | [diff] [blame] | 2013 | /* selftest */ |
| 2014 | |
| 2015 | if (lws_b64_selftest()) |
Peter Pentchev | 3b233cb | 2013-02-07 16:31:19 +0200 | [diff] [blame] | 2016 | goto bail; |
Andy Green | df73616 | 2011-01-18 15:39:02 +0000 | [diff] [blame] | 2017 | |
Andy Green | a1ce6be | 2013-01-18 11:43:21 +0800 | [diff] [blame] | 2018 | #ifndef LWS_NO_SERVER |
Andy Green | b45993c | 2010-12-18 15:13:50 +0000 | [diff] [blame] | 2019 | /* set up our external listening socket we serve on */ |
Andy Green | 8f037e4 | 2010-12-19 22:13:26 +0000 | [diff] [blame] | 2020 | |
Andy Green | 1b26527 | 2013-02-09 14:01:09 +0800 | [diff] [blame] | 2021 | if (info->port) { |
Andy Green | a1ce6be | 2013-01-18 11:43:21 +0800 | [diff] [blame] | 2022 | int sockfd; |
Andy Green | 8f037e4 | 2010-12-19 22:13:26 +0000 | [diff] [blame] | 2023 | |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 2024 | sockfd = socket(AF_INET, SOCK_STREAM, 0); |
| 2025 | if (sockfd < 0) { |
Andy Green | f7609e9 | 2013-01-14 13:10:55 +0800 | [diff] [blame] | 2026 | lwsl_err("ERROR opening socket\n"); |
Peter Pentchev | 3b233cb | 2013-02-07 16:31:19 +0200 | [diff] [blame] | 2027 | goto bail; |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 2028 | } |
Andy Green | 775c0dd | 2010-10-29 14:15:22 +0100 | [diff] [blame] | 2029 | |
Joakim Soderberg | 4c53123 | 2013-02-06 15:26:58 +0900 | [diff] [blame] | 2030 | #ifndef WIN32 |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 2031 | /* |
| 2032 | * allow us to restart even if old sockets in TIME_WAIT |
| 2033 | * (REUSEADDR on Unix means, "don't hang on to this |
| 2034 | * address after the listener is closed." On Windows, though, |
| 2035 | * it means "don't keep other processes from binding to |
| 2036 | * this address while we're using it) |
| 2037 | */ |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 2038 | setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, |
| 2039 | (const void *)&opt, sizeof(opt)); |
Joakim Soderberg | 4c53123 | 2013-02-06 15:26:58 +0900 | [diff] [blame] | 2040 | #endif |
Andy Green | 6c93955 | 2011-03-08 08:56:57 +0000 | [diff] [blame] | 2041 | |
| 2042 | /* Disable Nagle */ |
| 2043 | opt = 1; |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 2044 | setsockopt(sockfd, IPPROTO_TCP, TCP_NODELAY, |
| 2045 | (const void *)&opt, sizeof(opt)); |
Andy Green | 6c93955 | 2011-03-08 08:56:57 +0000 | [diff] [blame] | 2046 | |
Joakim Soderberg | 4c53123 | 2013-02-06 15:26:58 +0900 | [diff] [blame] | 2047 | #ifdef WIN32 |
| 2048 | opt = 0; |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 2049 | ioctlsocket(sockfd, FIONBIO, (unsigned long *)&opt); |
Joakim Soderberg | 4c53123 | 2013-02-06 15:26:58 +0900 | [diff] [blame] | 2050 | #else |
Andy Green | e216071 | 2013-01-28 12:19:10 +0800 | [diff] [blame] | 2051 | fcntl(sockfd, F_SETFL, O_NONBLOCK); |
Joakim Soderberg | 4c53123 | 2013-02-06 15:26:58 +0900 | [diff] [blame] | 2052 | #endif |
Andy Green | e216071 | 2013-01-28 12:19:10 +0800 | [diff] [blame] | 2053 | |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 2054 | bzero((char *) &serv_addr, sizeof(serv_addr)); |
| 2055 | serv_addr.sin_family = AF_INET; |
Andy Green | 1b26527 | 2013-02-09 14:01:09 +0800 | [diff] [blame] | 2056 | if (info->interface == NULL) |
Andy Green | 32375b7 | 2011-02-19 08:32:53 +0000 | [diff] [blame] | 2057 | serv_addr.sin_addr.s_addr = INADDR_ANY; |
| 2058 | else |
Andy Green | 1b26527 | 2013-02-09 14:01:09 +0800 | [diff] [blame] | 2059 | interface_to_sa(info->interface, &serv_addr, |
Andy Green | 32375b7 | 2011-02-19 08:32:53 +0000 | [diff] [blame] | 2060 | sizeof(serv_addr)); |
Andy Green | 1b26527 | 2013-02-09 14:01:09 +0800 | [diff] [blame] | 2061 | serv_addr.sin_port = htons(info->port); |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 2062 | |
| 2063 | n = bind(sockfd, (struct sockaddr *) &serv_addr, |
| 2064 | sizeof(serv_addr)); |
| 2065 | if (n < 0) { |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 2066 | lwsl_err("ERROR on binding to port %d (%d %d)\n", |
Andy Green | 1b26527 | 2013-02-09 14:01:09 +0800 | [diff] [blame] | 2067 | info->port, n, errno); |
Andy Green | 41c5803 | 2013-01-12 13:21:08 +0800 | [diff] [blame] | 2068 | close(sockfd); |
Peter Pentchev | 3b233cb | 2013-02-07 16:31:19 +0200 | [diff] [blame] | 2069 | goto bail; |
Andy Green | 4739e5c | 2011-01-22 12:51:57 +0000 | [diff] [blame] | 2070 | } |
Andy Green | 0d33833 | 2011-02-12 11:57:43 +0000 | [diff] [blame] | 2071 | |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 2072 | wsi = (struct libwebsocket *)malloc( |
| 2073 | sizeof(struct libwebsocket)); |
Andy Green | 41c5803 | 2013-01-12 13:21:08 +0800 | [diff] [blame] | 2074 | if (wsi == NULL) { |
| 2075 | lwsl_err("Out of mem\n"); |
| 2076 | close(sockfd); |
Peter Pentchev | 3b233cb | 2013-02-07 16:31:19 +0200 | [diff] [blame] | 2077 | goto bail; |
Andy Green | 41c5803 | 2013-01-12 13:21:08 +0800 | [diff] [blame] | 2078 | } |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 2079 | memset(wsi, 0, sizeof(struct libwebsocket)); |
Andy Green | 0d33833 | 2011-02-12 11:57:43 +0000 | [diff] [blame] | 2080 | wsi->sock = sockfd; |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 2081 | #ifndef LWS_NO_EXTENSIONS |
Andy Green | d6e0911 | 2011-03-05 16:12:15 +0000 | [diff] [blame] | 2082 | wsi->count_active_extensions = 0; |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 2083 | #endif |
Andy Green | 0d33833 | 2011-02-12 11:57:43 +0000 | [diff] [blame] | 2084 | wsi->mode = LWS_CONNMODE_SERVER_LISTENER; |
Andy Green | dfb2304 | 2013-01-17 12:26:48 +0800 | [diff] [blame] | 2085 | |
| 2086 | insert_wsi_socket_into_fds(context, wsi); |
Andy Green | 0d33833 | 2011-02-12 11:57:43 +0000 | [diff] [blame] | 2087 | |
Andy Green | 65b0e91 | 2013-01-16 07:59:47 +0800 | [diff] [blame] | 2088 | context->listen_service_modulo = LWS_LISTEN_SERVICE_MODULO; |
| 2089 | context->listen_service_count = 0; |
| 2090 | context->listen_service_fd = sockfd; |
| 2091 | |
Andy Green | a824d18 | 2013-01-15 20:52:29 +0800 | [diff] [blame] | 2092 | listen(sockfd, LWS_SOMAXCONN); |
Andy Green | 1b26527 | 2013-02-09 14:01:09 +0800 | [diff] [blame] | 2093 | lwsl_notice(" Listening on port %d\n", info->port); |
Andy Green | 8f037e4 | 2010-12-19 22:13:26 +0000 | [diff] [blame] | 2094 | } |
Andy Green | a1ce6be | 2013-01-18 11:43:21 +0800 | [diff] [blame] | 2095 | #endif |
Andy Green | b45993c | 2010-12-18 15:13:50 +0000 | [diff] [blame] | 2096 | |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 2097 | /* |
| 2098 | * drop any root privs for this process |
| 2099 | * to listen on port < 1023 we would have needed root, but now we are |
| 2100 | * listening, we don't want the power for anything else |
| 2101 | */ |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 2102 | #ifdef WIN32 |
| 2103 | #else |
Andy Green | 1b26527 | 2013-02-09 14:01:09 +0800 | [diff] [blame] | 2104 | if (info->gid != -1) |
| 2105 | if (setgid(info->gid)) |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 2106 | lwsl_warn("setgid: %s\n", strerror(errno)); |
Andy Green | 1b26527 | 2013-02-09 14:01:09 +0800 | [diff] [blame] | 2107 | if (info->uid != -1) |
| 2108 | if (setuid(info->uid)) |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 2109 | lwsl_warn("setuid: %s\n", strerror(errno)); |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 2110 | #endif |
Andy Green | b45993c | 2010-12-18 15:13:50 +0000 | [diff] [blame] | 2111 | |
Andy Green | 6f520a5 | 2013-01-29 17:57:39 +0800 | [diff] [blame] | 2112 | /* initialize supported protocols */ |
Andy Green | b45993c | 2010-12-18 15:13:50 +0000 | [diff] [blame] | 2113 | |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 2114 | for (context->count_protocols = 0; |
Andy Green | 1b26527 | 2013-02-09 14:01:09 +0800 | [diff] [blame] | 2115 | info->protocols[context->count_protocols].callback; |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 2116 | context->count_protocols++) { |
Andy Green | 2d1301e | 2011-05-24 10:14:41 +0100 | [diff] [blame] | 2117 | |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 2118 | lwsl_parser(" Protocol: %s\n", |
Andy Green | 1b26527 | 2013-02-09 14:01:09 +0800 | [diff] [blame] | 2119 | info->protocols[context->count_protocols].name); |
Andy Green | 2d1301e | 2011-05-24 10:14:41 +0100 | [diff] [blame] | 2120 | |
Andy Green | 1b26527 | 2013-02-09 14:01:09 +0800 | [diff] [blame] | 2121 | info->protocols[context->count_protocols].owning_server = |
| 2122 | context; |
| 2123 | info->protocols[context->count_protocols].protocol_index = |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 2124 | context->count_protocols; |
Andy Green | a7109e6 | 2013-02-11 12:05:54 +0800 | [diff] [blame] | 2125 | |
| 2126 | /* |
| 2127 | * inform all the protocols that they are doing their one-time |
| 2128 | * initialization if they want to |
| 2129 | */ |
| 2130 | info->protocols[context->count_protocols].callback(context, |
| 2131 | NULL, LWS_CALLBACK_PROTOCOL_INIT, NULL, NULL, 0); |
Andy Green | b45993c | 2010-12-18 15:13:50 +0000 | [diff] [blame] | 2132 | } |
Andy Green | f5bc130 | 2013-01-21 09:09:52 +0800 | [diff] [blame] | 2133 | |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 2134 | #ifndef LWS_NO_EXTENSIONS |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 2135 | /* |
| 2136 | * give all extensions a chance to create any per-context |
| 2137 | * allocations they need |
| 2138 | */ |
| 2139 | |
| 2140 | m = LWS_EXT_CALLBACK_CLIENT_CONTEXT_CONSTRUCT; |
Andy Green | 1b26527 | 2013-02-09 14:01:09 +0800 | [diff] [blame] | 2141 | if (info->port) |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 2142 | m = LWS_EXT_CALLBACK_SERVER_CONTEXT_CONSTRUCT; |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 2143 | |
Andy Green | 1b26527 | 2013-02-09 14:01:09 +0800 | [diff] [blame] | 2144 | if (info->extensions) { |
| 2145 | ext = info->extensions; |
| 2146 | while (ext->callback) { |
| 2147 | lwsl_ext(" Extension: %s\n", ext->name); |
| 2148 | ext->callback(context, ext, NULL, |
Aaron Zinman | 4550f1d | 2013-01-10 12:35:18 +0800 | [diff] [blame] | 2149 | (enum libwebsocket_extension_callback_reasons)m, |
| 2150 | NULL, NULL, 0); |
Andy Green | 1b26527 | 2013-02-09 14:01:09 +0800 | [diff] [blame] | 2151 | ext++; |
| 2152 | } |
Andy Green | a41314f | 2011-05-23 10:00:03 +0100 | [diff] [blame] | 2153 | } |
Andy Green | 3182ece | 2013-01-20 17:08:31 +0800 | [diff] [blame] | 2154 | #endif |
Peter Hinz | 56885f3 | 2011-03-02 22:03:47 +0000 | [diff] [blame] | 2155 | return context; |
Peter Pentchev | 3b233cb | 2013-02-07 16:31:19 +0200 | [diff] [blame] | 2156 | |
| 2157 | bail: |
| 2158 | libwebsocket_context_destroy(context); |
| 2159 | return NULL; |
Andy Green | e92cd17 | 2011-01-19 13:11:55 +0000 | [diff] [blame] | 2160 | } |
Andy Green | b45993c | 2010-12-18 15:13:50 +0000 | [diff] [blame] | 2161 | |
Andy Green | b45993c | 2010-12-18 15:13:50 +0000 | [diff] [blame] | 2162 | /** |
| 2163 | * libwebsockets_get_protocol() - Returns a protocol pointer from a websocket |
Andy Green | 8f037e4 | 2010-12-19 22:13:26 +0000 | [diff] [blame] | 2164 | * connection. |
Andy Green | b45993c | 2010-12-18 15:13:50 +0000 | [diff] [blame] | 2165 | * @wsi: pointer to struct websocket you want to know the protocol of |
| 2166 | * |
Andy Green | 8f037e4 | 2010-12-19 22:13:26 +0000 | [diff] [blame] | 2167 | * |
Andy Green | 6f520a5 | 2013-01-29 17:57:39 +0800 | [diff] [blame] | 2168 | * Some apis can act on all live connections of a given protocol, |
| 2169 | * this is how you can get a pointer to the active protocol if needed. |
Andy Green | b45993c | 2010-12-18 15:13:50 +0000 | [diff] [blame] | 2170 | */ |
Andy Green | ab990e4 | 2010-10-31 12:42:52 +0000 | [diff] [blame] | 2171 | |
Andy Green | b45993c | 2010-12-18 15:13:50 +0000 | [diff] [blame] | 2172 | const struct libwebsocket_protocols * |
| 2173 | libwebsockets_get_protocol(struct libwebsocket *wsi) |
| 2174 | { |
| 2175 | return wsi->protocol; |
| 2176 | } |
| 2177 | |
Andy Green | 82c3d54 | 2011-03-07 21:16:31 +0000 | [diff] [blame] | 2178 | int |
| 2179 | libwebsocket_is_final_fragment(struct libwebsocket *wsi) |
| 2180 | { |
Andy Green | 623a98d | 2013-01-21 11:04:23 +0800 | [diff] [blame] | 2181 | return wsi->u.ws.final; |
Andy Green | 82c3d54 | 2011-03-07 21:16:31 +0000 | [diff] [blame] | 2182 | } |
Alex Bligh | 49146db | 2011-11-07 17:19:25 +0800 | [diff] [blame] | 2183 | |
David Galeano | e2cf992 | 2013-01-09 18:06:55 +0800 | [diff] [blame] | 2184 | unsigned char |
| 2185 | libwebsocket_get_reserved_bits(struct libwebsocket *wsi) |
| 2186 | { |
Andy Green | 623a98d | 2013-01-21 11:04:23 +0800 | [diff] [blame] | 2187 | return wsi->u.ws.rsv; |
David Galeano | e2cf992 | 2013-01-09 18:06:55 +0800 | [diff] [blame] | 2188 | } |
| 2189 | |
Alex Bligh | 49146db | 2011-11-07 17:19:25 +0800 | [diff] [blame] | 2190 | void * |
| 2191 | libwebsocket_ensure_user_space(struct libwebsocket *wsi) |
| 2192 | { |
| 2193 | /* allocate the per-connection user memory (if any) */ |
| 2194 | |
| 2195 | if (wsi->protocol->per_session_data_size && !wsi->user_space) { |
| 2196 | wsi->user_space = malloc( |
| 2197 | wsi->protocol->per_session_data_size); |
| 2198 | if (wsi->user_space == NULL) { |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 2199 | lwsl_err("Out of memory for conn user space\n"); |
Alex Bligh | 49146db | 2011-11-07 17:19:25 +0800 | [diff] [blame] | 2200 | return NULL; |
| 2201 | } |
Andy Green | 6ee372f | 2012-04-09 15:09:01 +0800 | [diff] [blame] | 2202 | memset(wsi->user_space, 0, |
| 2203 | wsi->protocol->per_session_data_size); |
Alex Bligh | 49146db | 2011-11-07 17:19:25 +0800 | [diff] [blame] | 2204 | } |
| 2205 | return wsi->user_space; |
| 2206 | } |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 2207 | |
Andy Green | 0b31909 | 2013-01-19 11:17:56 +0800 | [diff] [blame] | 2208 | static void lwsl_emit_stderr(int level, const char *line) |
Andy Green | de8f27a | 2013-01-12 09:17:42 +0800 | [diff] [blame] | 2209 | { |
Andy Green | 0b31909 | 2013-01-19 11:17:56 +0800 | [diff] [blame] | 2210 | char buf[300]; |
| 2211 | struct timeval tv; |
Andy Green | 0b31909 | 2013-01-19 11:17:56 +0800 | [diff] [blame] | 2212 | int n; |
| 2213 | |
| 2214 | gettimeofday(&tv, NULL); |
| 2215 | |
| 2216 | buf[0] = '\0'; |
| 2217 | for (n = 0; n < LLL_COUNT; n++) |
| 2218 | if (level == (1 << n)) { |
Andy Green | 058ba81 | 2013-01-19 11:32:18 +0800 | [diff] [blame] | 2219 | sprintf(buf, "[%ld:%04d] %s: ", tv.tv_sec, |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 2220 | (int)(tv.tv_usec / 100), log_level_names[n]); |
Andy Green | 0b31909 | 2013-01-19 11:17:56 +0800 | [diff] [blame] | 2221 | break; |
| 2222 | } |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 2223 | |
Andy Green | 0b31909 | 2013-01-19 11:17:56 +0800 | [diff] [blame] | 2224 | fprintf(stderr, "%s%s", buf, line); |
Andy Green | de8f27a | 2013-01-12 09:17:42 +0800 | [diff] [blame] | 2225 | } |
| 2226 | |
Joakim Soderberg | 4c53123 | 2013-02-06 15:26:58 +0900 | [diff] [blame] | 2227 | #ifdef WIN32 |
| 2228 | void lwsl_emit_syslog(int level, const char *line) |
| 2229 | { |
| 2230 | lwsl_emit_stderr(level, line); |
| 2231 | } |
| 2232 | #else |
Andy Green | c11db20 | 2013-01-19 11:12:16 +0800 | [diff] [blame] | 2233 | void lwsl_emit_syslog(int level, const char *line) |
| 2234 | { |
| 2235 | int syslog_level = LOG_DEBUG; |
| 2236 | |
| 2237 | switch (level) { |
| 2238 | case LLL_ERR: |
| 2239 | syslog_level = LOG_ERR; |
| 2240 | break; |
| 2241 | case LLL_WARN: |
| 2242 | syslog_level = LOG_WARNING; |
| 2243 | break; |
| 2244 | case LLL_NOTICE: |
| 2245 | syslog_level = LOG_NOTICE; |
| 2246 | break; |
| 2247 | case LLL_INFO: |
| 2248 | syslog_level = LOG_INFO; |
| 2249 | break; |
| 2250 | } |
Edwin van den Oetelaar | f6eeabc | 2013-01-19 20:01:01 +0800 | [diff] [blame] | 2251 | syslog(syslog_level, "%s", line); |
Andy Green | c11db20 | 2013-01-19 11:12:16 +0800 | [diff] [blame] | 2252 | } |
Joakim Soderberg | 4c53123 | 2013-02-06 15:26:58 +0900 | [diff] [blame] | 2253 | #endif |
Andy Green | c11db20 | 2013-01-19 11:12:16 +0800 | [diff] [blame] | 2254 | |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 2255 | void _lws_log(int filter, const char *format, ...) |
| 2256 | { |
Andy Green | de8f27a | 2013-01-12 09:17:42 +0800 | [diff] [blame] | 2257 | char buf[256]; |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 2258 | va_list ap; |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 2259 | |
| 2260 | if (!(log_level & filter)) |
| 2261 | return; |
| 2262 | |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 2263 | va_start(ap, format); |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 2264 | vsnprintf(buf, sizeof(buf), format, ap); |
| 2265 | buf[sizeof(buf) - 1] = '\0'; |
Andy Green | de8f27a | 2013-01-12 09:17:42 +0800 | [diff] [blame] | 2266 | va_end(ap); |
| 2267 | |
Andy Green | 0b31909 | 2013-01-19 11:17:56 +0800 | [diff] [blame] | 2268 | lwsl_emit(filter, buf); |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 2269 | } |
| 2270 | |
| 2271 | /** |
| 2272 | * lws_set_log_level() - Set the logging bitfield |
| 2273 | * @level: OR together the LLL_ debug contexts you want output from |
Andy Green | de8f27a | 2013-01-12 09:17:42 +0800 | [diff] [blame] | 2274 | * @log_emit_function: NULL to leave it as it is, or a user-supplied |
| 2275 | * function to perform log string emission instead of |
| 2276 | * the default stderr one. |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 2277 | * |
Andy Green | de8f27a | 2013-01-12 09:17:42 +0800 | [diff] [blame] | 2278 | * log level defaults to "err" and "warn" contexts enabled only and |
| 2279 | * emission on stderr. |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 2280 | */ |
| 2281 | |
Andy Green | b5b2319 | 2013-02-11 17:13:32 +0800 | [diff] [blame] | 2282 | void lws_set_log_level(int level, void (*log_emit_function)(int level, |
| 2283 | const char *line)) |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 2284 | { |
| 2285 | log_level = level; |
Andy Green | de8f27a | 2013-01-12 09:17:42 +0800 | [diff] [blame] | 2286 | if (log_emit_function) |
| 2287 | lwsl_emit = log_emit_function; |
Andy Green | 43db045 | 2013-01-10 19:50:35 +0800 | [diff] [blame] | 2288 | } |