[5ebff60] | 1 | /********************************************************************\ |
---|
[0431ea1] | 2 | * BitlBee -- An IRC to other IM-networks gateway * |
---|
| 3 | * * |
---|
[0e788f5] | 4 | * Copyright 2002-2012 Wilmer van der Gaast and others * |
---|
[0431ea1] | 5 | \********************************************************************/ |
---|
| 6 | |
---|
| 7 | /* IPC - communication between BitlBee processes */ |
---|
| 8 | |
---|
| 9 | /* |
---|
| 10 | This program is free software; you can redistribute it and/or modify |
---|
| 11 | it under the terms of the GNU General Public License as published by |
---|
| 12 | the Free Software Foundation; either version 2 of the License, or |
---|
| 13 | (at your option) any later version. |
---|
| 14 | |
---|
| 15 | This program is distributed in the hope that it will be useful, |
---|
| 16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
| 17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
---|
| 18 | GNU General Public License for more details. |
---|
| 19 | |
---|
| 20 | You should have received a copy of the GNU General Public License with |
---|
| 21 | the Debian GNU/Linux distribution in /usr/share/common-licenses/GPL; |
---|
[6f10697] | 22 | if not, write to the Free Software Foundation, Inc., 51 Franklin St., |
---|
| 23 | Fifth Floor, Boston, MA 02110-1301 USA |
---|
[0431ea1] | 24 | */ |
---|
| 25 | |
---|
| 26 | #define BITLBEE_CORE |
---|
| 27 | #include "bitlbee.h" |
---|
| 28 | #include "ipc.h" |
---|
| 29 | #include "commands.h" |
---|
[3709301] | 30 | #include <sys/uio.h> |
---|
[6dff9d4] | 31 | #include <sys/un.h> |
---|
[0431ea1] | 32 | |
---|
| 33 | GSList *child_list = NULL; |
---|
[0b09da0] | 34 | static int ipc_child_recv_fd = -1; |
---|
[74c119d] | 35 | |
---|
[5ebff60] | 36 | static void ipc_master_takeover_fail(struct bitlbee_child *child, gboolean both); |
---|
| 37 | static gboolean ipc_send_fd(int fd, int send_fd); |
---|
[c5bff81] | 38 | |
---|
[70d7795] | 39 | /* On Solaris and possibly other systems passing FDs between processes is |
---|
| 40 | * not possible (or at least not using the method used in this file. |
---|
| 41 | * Just disable that code, the functionality is not that important. */ |
---|
| 42 | #if defined(NO_FD_PASSING) && !defined(CMSG_SPACE) |
---|
| 43 | #define CMSG_SPACE(len) 1 |
---|
| 44 | #endif |
---|
| 45 | |
---|
[5ebff60] | 46 | static void ipc_master_cmd_client(irc_t *data, char **cmd) |
---|
[2face62] | 47 | { |
---|
[5e713f6] | 48 | /* Normally data points at an irc_t block, but for the IPC master |
---|
| 49 | this is different. We think this scary cast is better than |
---|
| 50 | creating a new command_t structure, just to make the compiler |
---|
| 51 | happy. */ |
---|
[5ebff60] | 52 | struct bitlbee_child *child = (void *) data; |
---|
| 53 | |
---|
| 54 | if (child && cmd[1]) { |
---|
| 55 | child->host = g_strdup(cmd[1]); |
---|
| 56 | child->nick = g_strdup(cmd[2]); |
---|
| 57 | child->realname = g_strdup(cmd[3]); |
---|
| 58 | } |
---|
| 59 | |
---|
[debe871] | 60 | /* CLIENT == On initial connects, HELLO is after /RESTARTs. */ |
---|
[5ebff60] | 61 | if (g_strcasecmp(cmd[0], "CLIENT") == 0) { |
---|
| 62 | ipc_to_children_str("OPERMSG :Client connecting (PID=%d): %s@%s (%s)\r\n", |
---|
| 63 | (int) (child ? child->pid : -1), cmd[2], cmd[1], cmd[3]); |
---|
| 64 | } |
---|
[2face62] | 65 | } |
---|
| 66 | |
---|
[5ebff60] | 67 | static void ipc_master_cmd_nick(irc_t *data, char **cmd) |
---|
[debe871] | 68 | { |
---|
[5ebff60] | 69 | struct bitlbee_child *child = (void *) data; |
---|
| 70 | |
---|
| 71 | if (child && cmd[1]) { |
---|
| 72 | g_free(child->nick); |
---|
| 73 | child->nick = g_strdup(cmd[1]); |
---|
[debe871] | 74 | } |
---|
| 75 | } |
---|
| 76 | |
---|
[5ebff60] | 77 | static void ipc_master_cmd_die(irc_t *data, char **cmd) |
---|
[0431ea1] | 78 | { |
---|
[5ebff60] | 79 | if (global.conf->runmode == RUNMODE_FORKDAEMON) { |
---|
| 80 | ipc_to_children_str("DIE\r\n"); |
---|
| 81 | } |
---|
| 82 | |
---|
| 83 | bitlbee_shutdown(NULL, -1, 0); |
---|
[0431ea1] | 84 | } |
---|
| 85 | |
---|
[5ebff60] | 86 | static void ipc_master_cmd_deaf(irc_t *data, char **cmd) |
---|
[565a1ea] | 87 | { |
---|
[5ebff60] | 88 | if (global.conf->runmode == RUNMODE_DAEMON) { |
---|
| 89 | b_event_remove(global.listen_watch_source_id); |
---|
| 90 | close(global.listen_socket); |
---|
| 91 | |
---|
[565a1ea] | 92 | global.listen_socket = global.listen_watch_source_id = -1; |
---|
[5ebff60] | 93 | |
---|
| 94 | ipc_to_children_str("OPERMSG :Closed listening socket, waiting " |
---|
| 95 | "for all users to disconnect."); |
---|
| 96 | } else { |
---|
| 97 | ipc_to_children_str("OPERMSG :The DEAF command only works in " |
---|
| 98 | "normal daemon mode. Try DIE instead."); |
---|
[565a1ea] | 99 | } |
---|
| 100 | } |
---|
| 101 | |
---|
[5ebff60] | 102 | void ipc_master_cmd_rehash(irc_t *data, char **cmd) |
---|
[0431ea1] | 103 | { |
---|
[f4a5940] | 104 | runmode_t oldmode; |
---|
[5ebff60] | 105 | |
---|
[f4a5940] | 106 | oldmode = global.conf->runmode; |
---|
[5ebff60] | 107 | |
---|
| 108 | g_free(global.conf); |
---|
| 109 | global.conf = conf_load(0, NULL); |
---|
| 110 | |
---|
| 111 | if (global.conf->runmode != oldmode) { |
---|
| 112 | log_message(LOGLVL_WARNING, "Can't change RunMode setting at runtime, restoring original setting"); |
---|
[f4a5940] | 113 | global.conf->runmode = oldmode; |
---|
| 114 | } |
---|
[5ebff60] | 115 | |
---|
| 116 | if (global.conf->runmode == RUNMODE_FORKDAEMON) { |
---|
| 117 | ipc_to_children(cmd); |
---|
| 118 | } |
---|
[0431ea1] | 119 | } |
---|
| 120 | |
---|
[5ebff60] | 121 | void ipc_master_cmd_restart(irc_t *data, char **cmd) |
---|
[54879ab] | 122 | { |
---|
[5ebff60] | 123 | if (global.conf->runmode != RUNMODE_FORKDAEMON) { |
---|
[54879ab] | 124 | /* Tell child that this is unsupported. */ |
---|
| 125 | return; |
---|
| 126 | } |
---|
[5ebff60] | 127 | |
---|
[54879ab] | 128 | global.restart = -1; |
---|
[5ebff60] | 129 | bitlbee_shutdown(NULL, -1, 0); |
---|
[54879ab] | 130 | } |
---|
| 131 | |
---|
[5ebff60] | 132 | void ipc_master_cmd_identify(irc_t *data, char **cmd) |
---|
[6c2404e] | 133 | { |
---|
[5ebff60] | 134 | struct bitlbee_child *child = (void *) data, *old = NULL; |
---|
[0b09da0] | 135 | char *resp; |
---|
[6c2404e] | 136 | GSList *l; |
---|
[5ebff60] | 137 | |
---|
| 138 | if (!child || !child->nick || strcmp(child->nick, cmd[1]) != 0) { |
---|
[6c2404e] | 139 | return; |
---|
[5ebff60] | 140 | } |
---|
| 141 | |
---|
| 142 | g_free(child->password); |
---|
| 143 | child->password = g_strdup(cmd[2]); |
---|
| 144 | |
---|
| 145 | for (l = child_list; l; l = l->next) { |
---|
[6c2404e] | 146 | old = l->data; |
---|
[5ebff60] | 147 | if (child != old && |
---|
| 148 | old->nick && nick_cmp(NULL, old->nick, child->nick) == 0 && |
---|
| 149 | old->password && strcmp(old->password, child->password) == 0) { |
---|
[6c2404e] | 150 | break; |
---|
[5ebff60] | 151 | } |
---|
[6c2404e] | 152 | } |
---|
[5ebff60] | 153 | |
---|
| 154 | if (l && !child->to_child && !old->to_child) { |
---|
[0b09da0] | 155 | resp = "TAKEOVER INIT\r\n"; |
---|
[f545372] | 156 | child->to_child = old; |
---|
| 157 | old->to_child = child; |
---|
[5ebff60] | 158 | } else { |
---|
[0b09da0] | 159 | /* Won't need the fd since we can't send it anywhere. */ |
---|
[5ebff60] | 160 | closesocket(child->to_fd); |
---|
[0b09da0] | 161 | child->to_fd = -1; |
---|
| 162 | resp = "TAKEOVER NO\r\n"; |
---|
| 163 | } |
---|
[5ebff60] | 164 | |
---|
| 165 | if (write(child->ipc_fd, resp, strlen(resp)) != strlen(resp)) { |
---|
| 166 | ipc_master_free_one(child); |
---|
| 167 | } |
---|
[0b09da0] | 168 | } |
---|
| 169 | |
---|
| 170 | |
---|
[5ebff60] | 171 | void ipc_master_cmd_takeover(irc_t *data, char **cmd) |
---|
[0b09da0] | 172 | { |
---|
[5ebff60] | 173 | struct bitlbee_child *child = (void *) data; |
---|
[f545372] | 174 | char *fwd = NULL; |
---|
[5ebff60] | 175 | |
---|
[e92c4f4] | 176 | /* Normal daemon mode doesn't keep these and has simplified code for |
---|
| 177 | takeovers. */ |
---|
[5ebff60] | 178 | if (child == NULL) { |
---|
[e92c4f4] | 179 | return; |
---|
[5ebff60] | 180 | } |
---|
| 181 | |
---|
| 182 | if (child->to_child == NULL || |
---|
| 183 | g_slist_find(child_list, child->to_child) == NULL) { |
---|
| 184 | return ipc_master_takeover_fail(child, FALSE); |
---|
| 185 | } |
---|
| 186 | |
---|
| 187 | if (strcmp(cmd[1], "AUTH") == 0) { |
---|
[c5bff81] | 188 | /* New connection -> Master */ |
---|
[5ebff60] | 189 | if (child->to_child && |
---|
[0b09da0] | 190 | child->nick && child->to_child->nick && cmd[2] && |
---|
| 191 | child->password && child->to_child->password && cmd[3] && |
---|
[5ebff60] | 192 | strcmp(child->nick, child->to_child->nick) == 0 && |
---|
| 193 | strcmp(child->nick, cmd[2]) == 0 && |
---|
| 194 | strcmp(child->password, child->to_child->password) == 0 && |
---|
| 195 | strcmp(child->password, cmd[3]) == 0) { |
---|
| 196 | ipc_send_fd(child->to_child->ipc_fd, child->to_fd); |
---|
| 197 | |
---|
| 198 | fwd = irc_build_line(cmd); |
---|
| 199 | if (write(child->to_child->ipc_fd, fwd, strlen(fwd)) != strlen(fwd)) { |
---|
| 200 | ipc_master_free_one(child); |
---|
| 201 | } |
---|
| 202 | g_free(fwd); |
---|
| 203 | } else { |
---|
| 204 | return ipc_master_takeover_fail(child, TRUE); |
---|
[0b09da0] | 205 | } |
---|
[5ebff60] | 206 | } else if (strcmp(cmd[1], "DONE") == 0 || strcmp(cmd[1], "FAIL") == 0) { |
---|
[c5bff81] | 207 | /* Old connection -> Master */ |
---|
[f545372] | 208 | int fd; |
---|
[5ebff60] | 209 | |
---|
[f545372] | 210 | /* The copy was successful (or not), we don't need it anymore. */ |
---|
[5ebff60] | 211 | closesocket(child->to_fd); |
---|
[f545372] | 212 | child->to_fd = -1; |
---|
[5ebff60] | 213 | |
---|
[f545372] | 214 | /* Pass it through to the other party, and flush all state. */ |
---|
[5ebff60] | 215 | fwd = irc_build_line(cmd); |
---|
[f545372] | 216 | fd = child->to_child->ipc_fd; |
---|
| 217 | child->to_child->to_child = NULL; |
---|
| 218 | child->to_child = NULL; |
---|
[5ebff60] | 219 | if (write(fd, fwd, strlen(fwd)) != strlen(fwd)) { |
---|
| 220 | ipc_master_free_one(child); |
---|
| 221 | } |
---|
| 222 | g_free(fwd); |
---|
[f545372] | 223 | } |
---|
[6c2404e] | 224 | } |
---|
| 225 | |
---|
[0431ea1] | 226 | static const command_t ipc_master_commands[] = { |
---|
[2face62] | 227 | { "client", 3, ipc_master_cmd_client, 0 }, |
---|
[54879ab] | 228 | { "hello", 0, ipc_master_cmd_client, 0 }, |
---|
[debe871] | 229 | { "nick", 1, ipc_master_cmd_nick, 0 }, |
---|
[0431ea1] | 230 | { "die", 0, ipc_master_cmd_die, 0 }, |
---|
[565a1ea] | 231 | { "deaf", 0, ipc_master_cmd_deaf, 0 }, |
---|
[f4a5940] | 232 | { "wallops", 1, NULL, IPC_CMD_TO_CHILDREN }, |
---|
[dfc8a46] | 233 | { "wall", 1, NULL, IPC_CMD_TO_CHILDREN }, |
---|
[2face62] | 234 | { "opermsg", 1, NULL, IPC_CMD_TO_CHILDREN }, |
---|
[f4a5940] | 235 | { "rehash", 0, ipc_master_cmd_rehash, 0 }, |
---|
[48721c3] | 236 | { "kill", 2, NULL, IPC_CMD_TO_CHILDREN }, |
---|
[54879ab] | 237 | { "restart", 0, ipc_master_cmd_restart, 0 }, |
---|
[6c2404e] | 238 | { "identify", 2, ipc_master_cmd_identify, 0 }, |
---|
[0b09da0] | 239 | { "takeover", 1, ipc_master_cmd_takeover, 0 }, |
---|
[0431ea1] | 240 | { NULL } |
---|
| 241 | }; |
---|
| 242 | |
---|
[74c119d] | 243 | |
---|
[5ebff60] | 244 | static void ipc_child_cmd_die(irc_t *irc, char **cmd) |
---|
[74c119d] | 245 | { |
---|
[5ebff60] | 246 | irc_abort(irc, 0, "Shutdown requested by operator"); |
---|
[74c119d] | 247 | } |
---|
| 248 | |
---|
[5ebff60] | 249 | static void ipc_child_cmd_wallops(irc_t *irc, char **cmd) |
---|
[0431ea1] | 250 | { |
---|
[5ebff60] | 251 | if (!(irc->status & USTATUS_LOGGED_IN)) { |
---|
[f73b969] | 252 | return; |
---|
[5ebff60] | 253 | } |
---|
| 254 | |
---|
| 255 | if (strchr(irc->umode, 'w')) { |
---|
| 256 | irc_write(irc, ":%s WALLOPS :%s", irc->root->host, cmd[1]); |
---|
| 257 | } |
---|
[e0ca412] | 258 | } |
---|
| 259 | |
---|
[5ebff60] | 260 | static void ipc_child_cmd_wall(irc_t *irc, char **cmd) |
---|
[e0ca412] | 261 | { |
---|
[5ebff60] | 262 | if (!(irc->status & USTATUS_LOGGED_IN)) { |
---|
[f73b969] | 263 | return; |
---|
[5ebff60] | 264 | } |
---|
| 265 | |
---|
| 266 | if (strchr(irc->umode, 's')) { |
---|
| 267 | irc_write(irc, ":%s NOTICE %s :%s", irc->root->host, irc->user->nick, cmd[1]); |
---|
| 268 | } |
---|
[0431ea1] | 269 | } |
---|
| 270 | |
---|
[5ebff60] | 271 | static void ipc_child_cmd_opermsg(irc_t *irc, char **cmd) |
---|
[2face62] | 272 | { |
---|
[5ebff60] | 273 | if (!(irc->status & USTATUS_LOGGED_IN)) { |
---|
[f73b969] | 274 | return; |
---|
[5ebff60] | 275 | } |
---|
| 276 | |
---|
| 277 | if (strchr(irc->umode, 'o')) { |
---|
| 278 | irc_write(irc, ":%s NOTICE %s :*** OperMsg *** %s", irc->root->host, irc->user->nick, cmd[1]); |
---|
| 279 | } |
---|
[2face62] | 280 | } |
---|
| 281 | |
---|
[5ebff60] | 282 | static void ipc_child_cmd_rehash(irc_t *irc, char **cmd) |
---|
[f4a5940] | 283 | { |
---|
| 284 | runmode_t oldmode; |
---|
[5ebff60] | 285 | |
---|
[f4a5940] | 286 | oldmode = global.conf->runmode; |
---|
[5ebff60] | 287 | |
---|
| 288 | g_free(global.conf); |
---|
| 289 | global.conf = conf_load(0, NULL); |
---|
| 290 | |
---|
[f4a5940] | 291 | global.conf->runmode = oldmode; |
---|
| 292 | } |
---|
| 293 | |
---|
[5ebff60] | 294 | static void ipc_child_cmd_kill(irc_t *irc, char **cmd) |
---|
[48721c3] | 295 | { |
---|
[5ebff60] | 296 | if (!(irc->status & USTATUS_LOGGED_IN)) { |
---|
[f73b969] | 297 | return; |
---|
[5ebff60] | 298 | } |
---|
| 299 | |
---|
| 300 | if (nick_cmp(NULL, cmd[1], irc->user->nick) != 0) { |
---|
| 301 | return; /* It's not for us. */ |
---|
| 302 | |
---|
| 303 | } |
---|
| 304 | irc_write(irc, ":%s!%s@%s KILL %s :%s", irc->root->nick, irc->root->nick, irc->root->host, irc->user->nick, |
---|
| 305 | cmd[2]); |
---|
| 306 | irc_abort(irc, 0, "Killed by operator: %s", cmd[2]); |
---|
[48721c3] | 307 | } |
---|
| 308 | |
---|
[5ebff60] | 309 | static void ipc_child_cmd_hello(irc_t *irc, char **cmd) |
---|
[54879ab] | 310 | { |
---|
[5ebff60] | 311 | if (!(irc->status & USTATUS_LOGGED_IN)) { |
---|
| 312 | ipc_to_master_str("HELLO\r\n"); |
---|
| 313 | } else { |
---|
| 314 | ipc_to_master_str("HELLO %s %s :%s\r\n", irc->user->host, irc->user->nick, irc->user->fullname); |
---|
| 315 | } |
---|
[54879ab] | 316 | } |
---|
| 317 | |
---|
[5ebff60] | 318 | static void ipc_child_cmd_takeover_yes(void *data); |
---|
| 319 | static void ipc_child_cmd_takeover_no(void *data); |
---|
[f545372] | 320 | |
---|
[5ebff60] | 321 | static void ipc_child_cmd_takeover(irc_t *irc, char **cmd) |
---|
[0b09da0] | 322 | { |
---|
[5ebff60] | 323 | if (strcmp(cmd[1], "NO") == 0) { |
---|
[f545372] | 324 | /* Master->New connection */ |
---|
[0b09da0] | 325 | /* No takeover, finish the login. */ |
---|
[5ebff60] | 326 | } else if (strcmp(cmd[1], "INIT") == 0) { |
---|
[f545372] | 327 | /* Master->New connection */ |
---|
[5ebff60] | 328 | if (!set_getbool(&irc->b->set, "allow_takeover")) { |
---|
| 329 | ipc_child_cmd_takeover_no(irc); |
---|
[af9f2ca] | 330 | return; |
---|
| 331 | } |
---|
[5ebff60] | 332 | |
---|
[f545372] | 333 | /* Offer to take over the old session, unless for some reason |
---|
| 334 | we're already logging into IM connections. */ |
---|
[5ebff60] | 335 | if (irc->login_source_id != -1) { |
---|
| 336 | query_add(irc, NULL, |
---|
| 337 | "You're already connected to this server. " |
---|
| 338 | "Would you like to take over this session?", |
---|
| 339 | ipc_child_cmd_takeover_yes, |
---|
| 340 | ipc_child_cmd_takeover_no, NULL, irc); |
---|
| 341 | } |
---|
| 342 | |
---|
[f545372] | 343 | /* This one's going to connect to accounts, avoid that. */ |
---|
[5ebff60] | 344 | b_event_remove(irc->login_source_id); |
---|
[f545372] | 345 | irc->login_source_id = -1; |
---|
[5ebff60] | 346 | } else if (strcmp(cmd[1], "AUTH") == 0) { |
---|
[f545372] | 347 | /* Master->Old connection */ |
---|
[5ebff60] | 348 | if (irc->password && cmd[2] && cmd[3] && |
---|
[0b09da0] | 349 | ipc_child_recv_fd != -1 && |
---|
[5ebff60] | 350 | strcmp(irc->user->nick, cmd[2]) == 0 && |
---|
| 351 | strcmp(irc->password, cmd[3]) == 0 && |
---|
| 352 | set_getbool(&irc->b->set, "allow_takeover")) { |
---|
| 353 | irc_switch_fd(irc, ipc_child_recv_fd); |
---|
| 354 | irc_sync(irc); |
---|
| 355 | irc_rootmsg(irc, "You've successfully taken over your old session"); |
---|
[f1c2b21] | 356 | ipc_child_recv_fd = -1; |
---|
[5ebff60] | 357 | |
---|
| 358 | ipc_to_master_str("TAKEOVER DONE\r\n"); |
---|
| 359 | } else { |
---|
| 360 | ipc_to_master_str("TAKEOVER FAIL\r\n"); |
---|
[f545372] | 361 | } |
---|
[5ebff60] | 362 | } else if (strcmp(cmd[1], "DONE") == 0) { |
---|
[f545372] | 363 | /* Master->New connection (now taken over by old process) */ |
---|
[5ebff60] | 364 | irc_free(irc); |
---|
| 365 | } else if (strcmp(cmd[1], "FAIL") == 0) { |
---|
[f545372] | 366 | /* Master->New connection */ |
---|
[5ebff60] | 367 | irc_rootmsg(irc, "Could not take over old session"); |
---|
[0b09da0] | 368 | } |
---|
| 369 | } |
---|
| 370 | |
---|
[5ebff60] | 371 | static void ipc_child_cmd_takeover_yes(void *data) |
---|
[f545372] | 372 | { |
---|
[e92c4f4] | 373 | irc_t *irc = data, *old = NULL; |
---|
| 374 | char *to_auth[] = { "TAKEOVER", "AUTH", irc->user->nick, irc->password, NULL }; |
---|
[5ebff60] | 375 | |
---|
[f545372] | 376 | /* Master->New connection */ |
---|
[5ebff60] | 377 | ipc_to_master_str("TAKEOVER AUTH %s :%s\r\n", |
---|
| 378 | irc->user->nick, irc->password); |
---|
| 379 | |
---|
| 380 | if (global.conf->runmode == RUNMODE_DAEMON) { |
---|
[e92c4f4] | 381 | GSList *l; |
---|
[5ebff60] | 382 | |
---|
| 383 | for (l = irc_connection_list; l; l = l->next) { |
---|
[e92c4f4] | 384 | old = l->data; |
---|
[5ebff60] | 385 | |
---|
| 386 | if (irc != old && |
---|
[e92c4f4] | 387 | irc->user->nick && old->user->nick && |
---|
| 388 | irc->password && old->password && |
---|
[5ebff60] | 389 | strcmp(irc->user->nick, old->user->nick) == 0 && |
---|
| 390 | strcmp(irc->password, old->password) == 0) { |
---|
[e92c4f4] | 391 | break; |
---|
[5ebff60] | 392 | } |
---|
[e92c4f4] | 393 | } |
---|
[5ebff60] | 394 | if (l == NULL) { |
---|
[e92c4f4] | 395 | to_auth[1] = "FAIL"; |
---|
[5ebff60] | 396 | ipc_child_cmd_takeover(irc, to_auth); |
---|
[e92c4f4] | 397 | return; |
---|
| 398 | } |
---|
| 399 | } |
---|
[5ebff60] | 400 | |
---|
[f545372] | 401 | /* Drop credentials, we'll shut down soon and shouldn't overwrite |
---|
| 402 | any settings. */ |
---|
[5ebff60] | 403 | irc_rootmsg(irc, "Trying to take over existing session"); |
---|
| 404 | |
---|
| 405 | irc_desync(irc); |
---|
| 406 | |
---|
| 407 | if (old) { |
---|
| 408 | ipc_child_recv_fd = dup(irc->fd); |
---|
| 409 | ipc_child_cmd_takeover(old, to_auth); |
---|
| 410 | } |
---|
| 411 | |
---|
[f545372] | 412 | /* TODO: irc_setpass() should do all of this. */ |
---|
[5ebff60] | 413 | irc_setpass(irc, NULL); |
---|
[f545372] | 414 | irc->status &= ~USTATUS_IDENTIFIED; |
---|
[5ebff60] | 415 | irc_umode_set(irc, "-R", 1); |
---|
| 416 | |
---|
| 417 | if (old) { |
---|
| 418 | irc_abort(irc, FALSE, NULL); |
---|
| 419 | } |
---|
[f545372] | 420 | } |
---|
| 421 | |
---|
[5ebff60] | 422 | static void ipc_child_cmd_takeover_no(void *data) |
---|
[f545372] | 423 | { |
---|
[5ebff60] | 424 | ipc_to_master_str("TAKEOVER NO\r\n"); |
---|
| 425 | cmd_identify_finish(data, 0, 0); |
---|
[f545372] | 426 | } |
---|
| 427 | |
---|
[0431ea1] | 428 | static const command_t ipc_child_commands[] = { |
---|
[74c119d] | 429 | { "die", 0, ipc_child_cmd_die, 0 }, |
---|
| 430 | { "wallops", 1, ipc_child_cmd_wallops, 0 }, |
---|
[dfc8a46] | 431 | { "wall", 1, ipc_child_cmd_wall, 0 }, |
---|
[2face62] | 432 | { "opermsg", 1, ipc_child_cmd_opermsg, 0 }, |
---|
[48721c3] | 433 | { "rehash", 0, ipc_child_cmd_rehash, 0 }, |
---|
| 434 | { "kill", 2, ipc_child_cmd_kill, 0 }, |
---|
[54879ab] | 435 | { "hello", 0, ipc_child_cmd_hello, 0 }, |
---|
[0b09da0] | 436 | { "takeover", 1, ipc_child_cmd_takeover, 0 }, |
---|
[0431ea1] | 437 | { NULL } |
---|
| 438 | }; |
---|
| 439 | |
---|
[5ebff60] | 440 | gboolean ipc_child_identify(irc_t *irc) |
---|
[6c2404e] | 441 | { |
---|
[5ebff60] | 442 | if (global.conf->runmode == RUNMODE_FORKDAEMON) { |
---|
[70d7795] | 443 | #ifndef NO_FD_PASSING |
---|
[5ebff60] | 444 | if (!ipc_send_fd(global.listen_socket, irc->fd)) { |
---|
[6c2404e] | 445 | ipc_child_disable(); |
---|
[5ebff60] | 446 | } |
---|
| 447 | |
---|
| 448 | ipc_to_master_str("IDENTIFY %s :%s\r\n", irc->user->nick, irc->password); |
---|
[70d7795] | 449 | #endif |
---|
[5ebff60] | 450 | |
---|
[6c2404e] | 451 | return TRUE; |
---|
[5ebff60] | 452 | } else if (global.conf->runmode == RUNMODE_DAEMON) { |
---|
[e92c4f4] | 453 | GSList *l; |
---|
[a6cd799] | 454 | irc_t *old = NULL; |
---|
[e92c4f4] | 455 | char *to_init[] = { "TAKEOVER", "INIT", NULL }; |
---|
[5ebff60] | 456 | |
---|
| 457 | for (l = irc_connection_list; l; l = l->next) { |
---|
[e92c4f4] | 458 | old = l->data; |
---|
[5ebff60] | 459 | |
---|
| 460 | if (irc != old && |
---|
[e92c4f4] | 461 | irc->user->nick && old->user->nick && |
---|
| 462 | irc->password && old->password && |
---|
[5ebff60] | 463 | strcmp(irc->user->nick, old->user->nick) == 0 && |
---|
| 464 | strcmp(irc->password, old->password) == 0) { |
---|
[e92c4f4] | 465 | break; |
---|
[5ebff60] | 466 | } |
---|
[e92c4f4] | 467 | } |
---|
[5ebff60] | 468 | if (l == NULL || old == NULL || |
---|
| 469 | !set_getbool(&irc->b->set, "allow_takeover") || |
---|
| 470 | !set_getbool(&old->b->set, "allow_takeover")) { |
---|
[e92c4f4] | 471 | return FALSE; |
---|
[5ebff60] | 472 | } |
---|
| 473 | |
---|
| 474 | ipc_child_cmd_takeover(irc, to_init); |
---|
| 475 | |
---|
[e92c4f4] | 476 | return TRUE; |
---|
[5ebff60] | 477 | } else { |
---|
[6c2404e] | 478 | return FALSE; |
---|
[5ebff60] | 479 | } |
---|
[6c2404e] | 480 | } |
---|
[74c119d] | 481 | |
---|
[5ebff60] | 482 | static void ipc_master_takeover_fail(struct bitlbee_child *child, gboolean both) |
---|
[c5bff81] | 483 | { |
---|
[5ebff60] | 484 | if (child == NULL || g_slist_find(child_list, child) == NULL) { |
---|
[c5bff81] | 485 | return; |
---|
[5ebff60] | 486 | } |
---|
| 487 | |
---|
| 488 | if (both && child->to_child != NULL) { |
---|
| 489 | ipc_master_takeover_fail(child->to_child, FALSE); |
---|
| 490 | } |
---|
| 491 | |
---|
| 492 | if (child->to_fd > -1) { |
---|
[c5bff81] | 493 | /* Send this error only to the new connection, which can be |
---|
| 494 | recognised by to_fd being set. */ |
---|
[5ebff60] | 495 | if (write(child->ipc_fd, "TAKEOVER FAIL\r\n", 15) != 15) { |
---|
| 496 | ipc_master_free_one(child); |
---|
[c5bff81] | 497 | return; |
---|
| 498 | } |
---|
[5ebff60] | 499 | close(child->to_fd); |
---|
[c5bff81] | 500 | child->to_fd = -1; |
---|
| 501 | } |
---|
| 502 | child->to_child = NULL; |
---|
| 503 | } |
---|
| 504 | |
---|
[5ebff60] | 505 | static void ipc_command_exec(void *data, char **cmd, const command_t *commands) |
---|
[0431ea1] | 506 | { |
---|
[f1d38f2] | 507 | int i, j; |
---|
[5ebff60] | 508 | |
---|
| 509 | if (!cmd[0]) { |
---|
[0431ea1] | 510 | return; |
---|
[5ebff60] | 511 | } |
---|
| 512 | |
---|
| 513 | for (i = 0; commands[i].command; i++) { |
---|
| 514 | if (g_strcasecmp(commands[i].command, cmd[0]) == 0) { |
---|
[f1d38f2] | 515 | /* There is no typo in this line: */ |
---|
[5ebff60] | 516 | for (j = 1; cmd[j]; j++) { |
---|
[25c4c78] | 517 | ; |
---|
[5ebff60] | 518 | } |
---|
[25c4c78] | 519 | j--; |
---|
[5ebff60] | 520 | |
---|
| 521 | if (j < commands[i].required_parameters) { |
---|
[f1d38f2] | 522 | break; |
---|
[5ebff60] | 523 | } |
---|
| 524 | |
---|
| 525 | if (commands[i].flags & IPC_CMD_TO_CHILDREN) { |
---|
| 526 | ipc_to_children(cmd); |
---|
| 527 | } else { |
---|
| 528 | commands[i].execute(data, cmd); |
---|
| 529 | } |
---|
| 530 | |
---|
[f1d38f2] | 531 | break; |
---|
[0431ea1] | 532 | } |
---|
[5ebff60] | 533 | } |
---|
[0431ea1] | 534 | } |
---|
| 535 | |
---|
[da7b484] | 536 | /* Return just one line. Returns NULL if something broke, an empty string |
---|
| 537 | on temporary "errors" (EAGAIN and friends). */ |
---|
[5ebff60] | 538 | static char *ipc_readline(int fd, int *recv_fd) |
---|
[0431ea1] | 539 | { |
---|
[6c2404e] | 540 | struct msghdr msg; |
---|
| 541 | struct iovec iov; |
---|
| 542 | char ccmsg[CMSG_SPACE(sizeof(recv_fd))]; |
---|
| 543 | struct cmsghdr *cmsg; |
---|
[da7b484] | 544 | char buf[513], *eol; |
---|
[0431ea1] | 545 | int size; |
---|
[5ebff60] | 546 | |
---|
[0431ea1] | 547 | /* Because this is internal communication, it should be pretty safe |
---|
| 548 | to just peek at the message, find its length (by searching for the |
---|
| 549 | end-of-line) and then just read that message. With internal |
---|
| 550 | sockets and limites message length, messages should always be |
---|
| 551 | complete. Saves us quite a lot of code and buffering. */ |
---|
[5ebff60] | 552 | size = recv(fd, buf, sizeof(buf) - 1, MSG_PEEK); |
---|
| 553 | if (size == 0 || (size < 0 && !sockerr_again())) { |
---|
[0431ea1] | 554 | return NULL; |
---|
[5ebff60] | 555 | } else if (size < 0) { /* && sockerr_again() */ |
---|
| 556 | return(g_strdup("")); |
---|
| 557 | } else { |
---|
[0431ea1] | 558 | buf[size] = 0; |
---|
[5ebff60] | 559 | } |
---|
| 560 | |
---|
| 561 | if ((eol = strstr(buf, "\r\n")) == NULL) { |
---|
[0431ea1] | 562 | return NULL; |
---|
[5ebff60] | 563 | } else { |
---|
[0431ea1] | 564 | size = eol - buf + 2; |
---|
[5ebff60] | 565 | } |
---|
| 566 | |
---|
[6c2404e] | 567 | iov.iov_base = buf; |
---|
| 568 | iov.iov_len = size; |
---|
[5ebff60] | 569 | |
---|
| 570 | memset(&msg, 0, sizeof(msg)); |
---|
[6c2404e] | 571 | msg.msg_iov = &iov; |
---|
| 572 | msg.msg_iovlen = 1; |
---|
[70d7795] | 573 | #ifndef NO_FD_PASSING |
---|
[6c2404e] | 574 | msg.msg_control = ccmsg; |
---|
[5ebff60] | 575 | msg.msg_controllen = sizeof(ccmsg); |
---|
[70d7795] | 576 | #endif |
---|
[5ebff60] | 577 | |
---|
| 578 | if (recvmsg(fd, &msg, 0) != size) { |
---|
[0431ea1] | 579 | return NULL; |
---|
[5ebff60] | 580 | } |
---|
| 581 | |
---|
[70d7795] | 582 | #ifndef NO_FD_PASSING |
---|
[5ebff60] | 583 | if (recv_fd) { |
---|
| 584 | for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) { |
---|
| 585 | if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) { |
---|
[6c2404e] | 586 | /* Getting more than one shouldn't happen but if it does, |
---|
| 587 | make sure we don't leave them around. */ |
---|
[5ebff60] | 588 | if (*recv_fd != -1) { |
---|
| 589 | close(*recv_fd); |
---|
| 590 | } |
---|
| 591 | |
---|
| 592 | *recv_fd = *(int *) CMSG_DATA(cmsg); |
---|
[e92c4f4] | 593 | /* |
---|
[0b09da0] | 594 | fprintf( stderr, "pid %d received fd %d\n", (int) getpid(), *recv_fd ); |
---|
[e92c4f4] | 595 | */ |
---|
[6c2404e] | 596 | } |
---|
[5ebff60] | 597 | } |
---|
| 598 | } |
---|
[70d7795] | 599 | #endif |
---|
[5ebff60] | 600 | |
---|
[e92c4f4] | 601 | /* |
---|
[0b09da0] | 602 | fprintf( stderr, "pid %d received: %s", (int) getpid(), buf ); |
---|
[e92c4f4] | 603 | */ |
---|
[5ebff60] | 604 | return g_strndup(buf, size - 2); |
---|
[0431ea1] | 605 | } |
---|
| 606 | |
---|
[5ebff60] | 607 | gboolean ipc_master_read(gpointer data, gint source, b_input_condition cond) |
---|
[0431ea1] | 608 | { |
---|
[6c2404e] | 609 | struct bitlbee_child *child = data; |
---|
[0431ea1] | 610 | char *buf, **cmd; |
---|
[5ebff60] | 611 | |
---|
| 612 | if ((buf = ipc_readline(source, &child->to_fd))) { |
---|
| 613 | cmd = irc_parse_line(buf); |
---|
| 614 | if (cmd) { |
---|
| 615 | ipc_command_exec(child, cmd, ipc_master_commands); |
---|
| 616 | g_free(cmd); |
---|
[edc767b] | 617 | } |
---|
[5ebff60] | 618 | g_free(buf); |
---|
| 619 | } else { |
---|
| 620 | ipc_master_free_fd(source); |
---|
[0431ea1] | 621 | } |
---|
[5ebff60] | 622 | |
---|
[ba9edaa] | 623 | return TRUE; |
---|
[0431ea1] | 624 | } |
---|
| 625 | |
---|
[5ebff60] | 626 | gboolean ipc_child_read(gpointer data, gint source, b_input_condition cond) |
---|
[0431ea1] | 627 | { |
---|
| 628 | char *buf, **cmd; |
---|
[5ebff60] | 629 | |
---|
| 630 | if ((buf = ipc_readline(source, &ipc_child_recv_fd))) { |
---|
| 631 | cmd = irc_parse_line(buf); |
---|
| 632 | if (cmd) { |
---|
| 633 | ipc_command_exec(data, cmd, ipc_child_commands); |
---|
| 634 | g_free(cmd); |
---|
[edc767b] | 635 | } |
---|
[5ebff60] | 636 | g_free(buf); |
---|
| 637 | } else { |
---|
[171ef85] | 638 | ipc_child_disable(); |
---|
[0431ea1] | 639 | } |
---|
[5ebff60] | 640 | |
---|
[ba9edaa] | 641 | return TRUE; |
---|
[0431ea1] | 642 | } |
---|
| 643 | |
---|
[5ebff60] | 644 | void ipc_to_master(char **cmd) |
---|
[0431ea1] | 645 | { |
---|
[5ebff60] | 646 | if (global.conf->runmode == RUNMODE_FORKDAEMON) { |
---|
| 647 | char *s = irc_build_line(cmd); |
---|
| 648 | ipc_to_master_str("%s", s); |
---|
| 649 | g_free(s); |
---|
| 650 | } else if (global.conf->runmode == RUNMODE_DAEMON) { |
---|
| 651 | ipc_command_exec(NULL, cmd, ipc_master_commands); |
---|
[f4a5940] | 652 | } |
---|
| 653 | } |
---|
| 654 | |
---|
[5ebff60] | 655 | void ipc_to_master_str(char *format, ...) |
---|
[f4a5940] | 656 | { |
---|
[2face62] | 657 | char *msg_buf; |
---|
| 658 | va_list params; |
---|
| 659 | |
---|
[5ebff60] | 660 | va_start(params, format); |
---|
| 661 | msg_buf = g_strdup_vprintf(format, params); |
---|
| 662 | va_end(params); |
---|
| 663 | |
---|
| 664 | if (strlen(msg_buf) > 512) { |
---|
[2face62] | 665 | /* Don't send it, it's too long... */ |
---|
[5ebff60] | 666 | } else if (global.conf->runmode == RUNMODE_FORKDAEMON) { |
---|
| 667 | if (global.listen_socket >= 0) { |
---|
| 668 | if (write(global.listen_socket, msg_buf, strlen(msg_buf)) <= 0) { |
---|
[171ef85] | 669 | ipc_child_disable(); |
---|
[5ebff60] | 670 | } |
---|
| 671 | } |
---|
| 672 | } else if (global.conf->runmode == RUNMODE_DAEMON) { |
---|
[bd9b00f] | 673 | char **cmd, *s; |
---|
[5ebff60] | 674 | |
---|
| 675 | if ((s = strchr(msg_buf, '\r'))) { |
---|
[bd9b00f] | 676 | *s = 0; |
---|
[5ebff60] | 677 | } |
---|
| 678 | |
---|
| 679 | cmd = irc_parse_line(msg_buf); |
---|
| 680 | ipc_command_exec(NULL, cmd, ipc_master_commands); |
---|
| 681 | g_free(cmd); |
---|
[74c119d] | 682 | } |
---|
[5ebff60] | 683 | |
---|
| 684 | g_free(msg_buf); |
---|
[74c119d] | 685 | } |
---|
| 686 | |
---|
[5ebff60] | 687 | void ipc_to_children(char **cmd) |
---|
[74c119d] | 688 | { |
---|
[5ebff60] | 689 | if (global.conf->runmode == RUNMODE_FORKDAEMON) { |
---|
| 690 | char *msg_buf = irc_build_line(cmd); |
---|
| 691 | ipc_to_children_str("%s", msg_buf); |
---|
| 692 | g_free(msg_buf); |
---|
| 693 | } else if (global.conf->runmode == RUNMODE_DAEMON) { |
---|
[f4a5940] | 694 | GSList *l; |
---|
[5ebff60] | 695 | |
---|
| 696 | for (l = irc_connection_list; l; l = l->next) { |
---|
| 697 | ipc_command_exec(l->data, cmd, ipc_child_commands); |
---|
| 698 | } |
---|
[f4a5940] | 699 | } |
---|
[74c119d] | 700 | } |
---|
| 701 | |
---|
[5ebff60] | 702 | void ipc_to_children_str(char *format, ...) |
---|
[74c119d] | 703 | { |
---|
[2face62] | 704 | char *msg_buf; |
---|
| 705 | va_list params; |
---|
| 706 | |
---|
[5ebff60] | 707 | va_start(params, format); |
---|
| 708 | msg_buf = g_strdup_vprintf(format, params); |
---|
| 709 | va_end(params); |
---|
| 710 | |
---|
| 711 | if (strlen(msg_buf) > 512) { |
---|
[2face62] | 712 | /* Don't send it, it's too long... */ |
---|
[5ebff60] | 713 | } else if (global.conf->runmode == RUNMODE_FORKDAEMON) { |
---|
| 714 | int msg_len = strlen(msg_buf); |
---|
[171ef85] | 715 | GSList *l, *next; |
---|
[5ebff60] | 716 | |
---|
| 717 | for (l = child_list; l; l = next) { |
---|
[74c119d] | 718 | struct bitlbee_child *c = l->data; |
---|
[5ebff60] | 719 | |
---|
[171ef85] | 720 | next = l->next; |
---|
[5ebff60] | 721 | if (write(c->ipc_fd, msg_buf, msg_len) <= 0) { |
---|
| 722 | ipc_master_free_one(c); |
---|
| 723 | } |
---|
[0431ea1] | 724 | } |
---|
[5ebff60] | 725 | } else if (global.conf->runmode == RUNMODE_DAEMON) { |
---|
[bd9b00f] | 726 | char **cmd, *s; |
---|
[5ebff60] | 727 | |
---|
| 728 | if ((s = strchr(msg_buf, '\r'))) { |
---|
[bd9b00f] | 729 | *s = 0; |
---|
[5ebff60] | 730 | } |
---|
| 731 | |
---|
| 732 | cmd = irc_parse_line(msg_buf); |
---|
| 733 | ipc_to_children(cmd); |
---|
| 734 | g_free(cmd); |
---|
[f4a5940] | 735 | } |
---|
[5ebff60] | 736 | |
---|
| 737 | g_free(msg_buf); |
---|
[2face62] | 738 | } |
---|
| 739 | |
---|
[5ebff60] | 740 | static gboolean ipc_send_fd(int fd, int send_fd) |
---|
[6c2404e] | 741 | { |
---|
| 742 | struct msghdr msg; |
---|
| 743 | struct iovec iov; |
---|
| 744 | char ccmsg[CMSG_SPACE(sizeof(fd))]; |
---|
| 745 | struct cmsghdr *cmsg; |
---|
[5ebff60] | 746 | |
---|
| 747 | memset(&msg, 0, sizeof(msg)); |
---|
[c5bff81] | 748 | iov.iov_base = "0x90\r\n"; /* Ja, noppes */ |
---|
[6c2404e] | 749 | iov.iov_len = 6; |
---|
| 750 | msg.msg_iov = &iov; |
---|
| 751 | msg.msg_iovlen = 1; |
---|
[5ebff60] | 752 | |
---|
[70d7795] | 753 | #ifndef NO_FD_PASSING |
---|
[6c2404e] | 754 | msg.msg_control = ccmsg; |
---|
[5ebff60] | 755 | msg.msg_controllen = sizeof(ccmsg); |
---|
| 756 | cmsg = CMSG_FIRSTHDR(&msg); |
---|
[6c2404e] | 757 | cmsg->cmsg_level = SOL_SOCKET; |
---|
| 758 | cmsg->cmsg_type = SCM_RIGHTS; |
---|
[5ebff60] | 759 | cmsg->cmsg_len = CMSG_LEN(sizeof(send_fd)); |
---|
| 760 | *(int *) CMSG_DATA(cmsg) = send_fd; |
---|
[6c2404e] | 761 | msg.msg_controllen = cmsg->cmsg_len; |
---|
[70d7795] | 762 | #endif |
---|
[5ebff60] | 763 | |
---|
| 764 | return sendmsg(fd, &msg, 0) == 6; |
---|
[6c2404e] | 765 | } |
---|
| 766 | |
---|
[5ebff60] | 767 | void ipc_master_free_one(struct bitlbee_child *c) |
---|
[2face62] | 768 | { |
---|
[c5bff81] | 769 | GSList *l; |
---|
[5ebff60] | 770 | |
---|
| 771 | b_event_remove(c->ipc_inpa); |
---|
| 772 | closesocket(c->ipc_fd); |
---|
| 773 | |
---|
| 774 | if (c->to_fd != -1) { |
---|
| 775 | close(c->to_fd); |
---|
| 776 | } |
---|
| 777 | |
---|
[05816dd] | 778 | child_list = g_slist_remove(child_list, c); |
---|
| 779 | |
---|
[5ebff60] | 780 | g_free(c->host); |
---|
| 781 | g_free(c->nick); |
---|
| 782 | g_free(c->realname); |
---|
| 783 | g_free(c->password); |
---|
| 784 | g_free(c); |
---|
| 785 | |
---|
[c5bff81] | 786 | /* Also, if any child has a reference to this one, remove it. */ |
---|
[5ebff60] | 787 | for (l = child_list; l; l = l->next) { |
---|
[c5bff81] | 788 | struct bitlbee_child *oc = l->data; |
---|
[5ebff60] | 789 | |
---|
| 790 | if (oc->to_child == c) { |
---|
| 791 | ipc_master_takeover_fail(oc, FALSE); |
---|
| 792 | } |
---|
[c5bff81] | 793 | } |
---|
[2face62] | 794 | } |
---|
| 795 | |
---|
[5ebff60] | 796 | void ipc_master_free_fd(int fd) |
---|
[171ef85] | 797 | { |
---|
| 798 | GSList *l; |
---|
| 799 | struct bitlbee_child *c; |
---|
[5ebff60] | 800 | |
---|
| 801 | for (l = child_list; l; l = l->next) { |
---|
[171ef85] | 802 | c = l->data; |
---|
[5ebff60] | 803 | if (c->ipc_fd == fd) { |
---|
| 804 | ipc_master_free_one(c); |
---|
[171ef85] | 805 | break; |
---|
| 806 | } |
---|
| 807 | } |
---|
| 808 | } |
---|
| 809 | |
---|
[2face62] | 810 | void ipc_master_free_all() |
---|
| 811 | { |
---|
[5ebff60] | 812 | while (child_list) { |
---|
| 813 | ipc_master_free_one(child_list->data); |
---|
| 814 | } |
---|
[0431ea1] | 815 | } |
---|
[54879ab] | 816 | |
---|
[171ef85] | 817 | void ipc_child_disable() |
---|
| 818 | { |
---|
[5ebff60] | 819 | b_event_remove(global.listen_watch_source_id); |
---|
| 820 | close(global.listen_socket); |
---|
| 821 | |
---|
[171ef85] | 822 | global.listen_socket = -1; |
---|
| 823 | } |
---|
| 824 | |
---|
[54879ab] | 825 | char *ipc_master_save_state() |
---|
| 826 | { |
---|
[5ebff60] | 827 | char *fn = g_strdup("/tmp/bee-restart.XXXXXX"); |
---|
| 828 | int fd = mkstemp(fn); |
---|
[54879ab] | 829 | GSList *l; |
---|
| 830 | FILE *fp; |
---|
| 831 | int i; |
---|
[5ebff60] | 832 | |
---|
| 833 | if (fd == -1) { |
---|
| 834 | log_message(LOGLVL_ERROR, "Could not create temporary file: %s", strerror(errno)); |
---|
| 835 | g_free(fn); |
---|
[54879ab] | 836 | return NULL; |
---|
| 837 | } |
---|
[5ebff60] | 838 | |
---|
[54879ab] | 839 | /* This is more convenient now. */ |
---|
[5ebff60] | 840 | fp = fdopen(fd, "w"); |
---|
| 841 | |
---|
| 842 | for (l = child_list, i = 0; l; l = l->next) { |
---|
| 843 | i++; |
---|
| 844 | } |
---|
| 845 | |
---|
[54879ab] | 846 | /* Number of client processes. */ |
---|
[5ebff60] | 847 | fprintf(fp, "%d\n", i); |
---|
| 848 | |
---|
| 849 | for (l = child_list; l; l = l->next) { |
---|
| 850 | fprintf(fp, "%d %d\n", (int) ((struct bitlbee_child*) l->data)->pid, |
---|
| 851 | ((struct bitlbee_child*) l->data)->ipc_fd); |
---|
[54879ab] | 852 | } |
---|
[5ebff60] | 853 | |
---|
| 854 | if (fclose(fp) == 0) { |
---|
| 855 | return fn; |
---|
| 856 | } else { |
---|
| 857 | unlink(fn); |
---|
| 858 | g_free(fn); |
---|
[54879ab] | 859 | return NULL; |
---|
| 860 | } |
---|
| 861 | } |
---|
| 862 | |
---|
[6dff9d4] | 863 | |
---|
[5ebff60] | 864 | static gboolean new_ipc_client(gpointer data, gint serversock, b_input_condition cond) |
---|
[6dff9d4] | 865 | { |
---|
[5ebff60] | 866 | struct bitlbee_child *child = g_new0(struct bitlbee_child, 1); |
---|
| 867 | |
---|
[6c2404e] | 868 | child->to_fd = -1; |
---|
[5ebff60] | 869 | child->ipc_fd = accept(serversock, NULL, 0); |
---|
| 870 | if (child->ipc_fd == -1) { |
---|
| 871 | log_message(LOGLVL_WARNING, "Unable to accept connection on UNIX domain socket: %s", strerror(errno)); |
---|
[8a56e52] | 872 | return TRUE; |
---|
| 873 | } |
---|
[5ebff60] | 874 | |
---|
| 875 | child->ipc_inpa = b_input_add(child->ipc_fd, B_EV_IO_READ, ipc_master_read, child); |
---|
| 876 | |
---|
| 877 | child_list = g_slist_prepend(child_list, child); |
---|
| 878 | |
---|
[6dff9d4] | 879 | return TRUE; |
---|
| 880 | } |
---|
| 881 | |
---|
| 882 | int ipc_master_listen_socket() |
---|
| 883 | { |
---|
| 884 | struct sockaddr_un un_addr; |
---|
| 885 | int serversock; |
---|
| 886 | |
---|
[5ebff60] | 887 | if (!IPCSOCKET || !*IPCSOCKET) { |
---|
[4c225f0] | 888 | return 1; |
---|
[5ebff60] | 889 | } |
---|
[4c225f0] | 890 | |
---|
[6dff9d4] | 891 | /* Clean up old socket files that were hanging around.. */ |
---|
[8a56e52] | 892 | if (unlink(IPCSOCKET) == -1 && errno != ENOENT) { |
---|
[5ebff60] | 893 | log_message(LOGLVL_ERROR, "Could not remove old IPC socket at %s: %s", IPCSOCKET, strerror(errno)); |
---|
[8a56e52] | 894 | return 0; |
---|
| 895 | } |
---|
[6dff9d4] | 896 | |
---|
| 897 | un_addr.sun_family = AF_UNIX; |
---|
| 898 | strcpy(un_addr.sun_path, IPCSOCKET); |
---|
| 899 | |
---|
| 900 | serversock = socket(AF_UNIX, SOCK_STREAM, PF_UNIX); |
---|
| 901 | |
---|
[8a56e52] | 902 | if (serversock == -1) { |
---|
[5ebff60] | 903 | log_message(LOGLVL_WARNING, "Unable to create UNIX socket: %s", strerror(errno)); |
---|
[8a56e52] | 904 | return 0; |
---|
| 905 | } |
---|
[6dff9d4] | 906 | |
---|
[5ebff60] | 907 | if (bind(serversock, (struct sockaddr *) &un_addr, sizeof(un_addr)) == -1) { |
---|
| 908 | log_message(LOGLVL_WARNING, "Unable to bind UNIX socket to %s: %s", IPCSOCKET, strerror(errno)); |
---|
[8a56e52] | 909 | return 0; |
---|
| 910 | } |
---|
| 911 | |
---|
| 912 | if (listen(serversock, 5) == -1) { |
---|
[5ebff60] | 913 | log_message(LOGLVL_WARNING, "Unable to listen on UNIX socket: %s", strerror(errno)); |
---|
[8a56e52] | 914 | return 0; |
---|
| 915 | } |
---|
[5ebff60] | 916 | |
---|
| 917 | b_input_add(serversock, B_EV_IO_READ, new_ipc_client, NULL); |
---|
| 918 | |
---|
[6dff9d4] | 919 | return 1; |
---|
| 920 | } |
---|
| 921 | |
---|
[5ebff60] | 922 | int ipc_master_load_state(char *statefile) |
---|
[54879ab] | 923 | { |
---|
| 924 | struct bitlbee_child *child; |
---|
| 925 | FILE *fp; |
---|
| 926 | int i, n; |
---|
[5ebff60] | 927 | |
---|
| 928 | if (statefile == NULL) { |
---|
[54879ab] | 929 | return 0; |
---|
[5ebff60] | 930 | } |
---|
| 931 | |
---|
| 932 | fp = fopen(statefile, "r"); |
---|
| 933 | unlink(statefile); /* Why do it later? :-) */ |
---|
| 934 | if (fp == NULL) { |
---|
[54879ab] | 935 | return 0; |
---|
[5ebff60] | 936 | } |
---|
| 937 | |
---|
| 938 | if (fscanf(fp, "%d", &n) != 1) { |
---|
| 939 | log_message(LOGLVL_WARNING, "Could not import state information for child processes."); |
---|
| 940 | fclose(fp); |
---|
[54879ab] | 941 | return 0; |
---|
| 942 | } |
---|
[5ebff60] | 943 | |
---|
| 944 | log_message(LOGLVL_INFO, "Importing information for %d child processes.", n); |
---|
| 945 | for (i = 0; i < n; i++) { |
---|
| 946 | child = g_new0(struct bitlbee_child, 1); |
---|
| 947 | |
---|
| 948 | if (fscanf(fp, "%d %d", (int *) &child->pid, &child->ipc_fd) != 2) { |
---|
| 949 | log_message(LOGLVL_WARNING, "Unexpected end of file: Only processed %d clients.", i); |
---|
| 950 | g_free(child); |
---|
| 951 | fclose(fp); |
---|
[54879ab] | 952 | return 0; |
---|
| 953 | } |
---|
[5ebff60] | 954 | child->ipc_inpa = b_input_add(child->ipc_fd, B_EV_IO_READ, ipc_master_read, child); |
---|
[6c2404e] | 955 | child->to_fd = -1; |
---|
[5ebff60] | 956 | |
---|
| 957 | child_list = g_slist_prepend(child_list, child); |
---|
| 958 | } |
---|
| 959 | |
---|
| 960 | ipc_to_children_str("HELLO\r\n"); |
---|
| 961 | ipc_to_children_str("OPERMSG :New %s master process started (version %s)\r\n", PACKAGE, BITLBEE_VERSION); |
---|
| 962 | |
---|
| 963 | fclose(fp); |
---|
[54879ab] | 964 | return 1; |
---|
| 965 | } |
---|