[0431ea1] | 1 | /********************************************************************\ |
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| 2 | * BitlBee -- An IRC to other IM-networks gateway * |
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| 3 | * * |
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[54879ab] | 4 | * Copyright 2002-2006 Wilmer van der Gaast and others * |
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[0431ea1] | 5 | \********************************************************************/ |
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| 6 | |
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| 7 | /* IPC - communication between BitlBee processes */ |
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| 8 | |
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| 9 | /* |
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| 10 | This program is free software; you can redistribute it and/or modify |
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| 11 | it under the terms of the GNU General Public License as published by |
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| 12 | the Free Software Foundation; either version 2 of the License, or |
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| 13 | (at your option) any later version. |
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| 14 | |
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| 15 | This program is distributed in the hope that it will be useful, |
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| 16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 18 | GNU General Public License for more details. |
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| 19 | |
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| 20 | You should have received a copy of the GNU General Public License with |
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| 21 | the Debian GNU/Linux distribution in /usr/share/common-licenses/GPL; |
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| 22 | if not, write to the Free Software Foundation, Inc., 59 Temple Place, |
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| 23 | Suite 330, Boston, MA 02111-1307 USA |
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| 24 | */ |
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| 25 | |
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| 26 | #define BITLBEE_CORE |
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| 27 | #include "bitlbee.h" |
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| 28 | #include "ipc.h" |
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| 29 | #include "commands.h" |
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[6dff9d4] | 30 | #ifndef _WIN32 |
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| 31 | #include <sys/un.h> |
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| 32 | #endif |
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[0431ea1] | 33 | |
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| 34 | GSList *child_list = NULL; |
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[0b09da0] | 35 | static int ipc_child_recv_fd = -1; |
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[74c119d] | 36 | |
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[c5bff81] | 37 | static void ipc_master_takeover_fail( struct bitlbee_child *child, gboolean both ); |
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| 38 | static gboolean ipc_send_fd( int fd, int send_fd ); |
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| 39 | |
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[f73b969] | 40 | static void ipc_master_cmd_client( irc_t *data, char **cmd ) |
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[2face62] | 41 | { |
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[5e713f6] | 42 | /* Normally data points at an irc_t block, but for the IPC master |
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| 43 | this is different. We think this scary cast is better than |
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| 44 | creating a new command_t structure, just to make the compiler |
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| 45 | happy. */ |
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[2face62] | 46 | struct bitlbee_child *child = (void*) data; |
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| 47 | |
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[54879ab] | 48 | if( child && cmd[1] ) |
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[bd9b00f] | 49 | { |
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| 50 | child->host = g_strdup( cmd[1] ); |
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| 51 | child->nick = g_strdup( cmd[2] ); |
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| 52 | child->realname = g_strdup( cmd[3] ); |
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| 53 | } |
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[2face62] | 54 | |
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[debe871] | 55 | /* CLIENT == On initial connects, HELLO is after /RESTARTs. */ |
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[54879ab] | 56 | if( g_strcasecmp( cmd[0], "CLIENT" ) == 0 ) |
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| 57 | ipc_to_children_str( "OPERMSG :Client connecting (PID=%d): %s@%s (%s)\r\n", |
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[52744f8] | 58 | (int) ( child ? child->pid : -1 ), cmd[2], cmd[1], cmd[3] ); |
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[2face62] | 59 | } |
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| 60 | |
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[debe871] | 61 | static void ipc_master_cmd_nick( irc_t *data, char **cmd ) |
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| 62 | { |
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| 63 | struct bitlbee_child *child = (void*) data; |
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| 64 | |
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| 65 | if( child && cmd[1] ) |
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| 66 | { |
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| 67 | g_free( child->nick ); |
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| 68 | child->nick = g_strdup( cmd[1] ); |
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| 69 | } |
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| 70 | } |
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| 71 | |
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[f73b969] | 72 | static void ipc_master_cmd_die( irc_t *data, char **cmd ) |
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[0431ea1] | 73 | { |
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[74c119d] | 74 | if( global.conf->runmode == RUNMODE_FORKDAEMON ) |
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| 75 | ipc_to_children_str( "DIE\r\n" ); |
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| 76 | |
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[ba9edaa] | 77 | bitlbee_shutdown( NULL, -1, 0 ); |
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[0431ea1] | 78 | } |
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| 79 | |
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[565a1ea] | 80 | static void ipc_master_cmd_deaf( irc_t *data, char **cmd ) |
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| 81 | { |
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| 82 | if( global.conf->runmode == RUNMODE_DAEMON ) |
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| 83 | { |
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| 84 | b_event_remove( global.listen_watch_source_id ); |
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| 85 | close( global.listen_socket ); |
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| 86 | |
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| 87 | global.listen_socket = global.listen_watch_source_id = -1; |
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| 88 | |
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| 89 | ipc_to_children_str( "OPERMSG :Closed listening socket, waiting " |
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| 90 | "for all users to disconnect." ); |
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| 91 | } |
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| 92 | else |
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| 93 | { |
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| 94 | ipc_to_children_str( "OPERMSG :The DEAF command only works in " |
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| 95 | "normal daemon mode. Try DIE instead." ); |
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| 96 | } |
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| 97 | } |
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| 98 | |
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[f73b969] | 99 | void ipc_master_cmd_rehash( irc_t *data, char **cmd ) |
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[0431ea1] | 100 | { |
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[f4a5940] | 101 | runmode_t oldmode; |
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| 102 | |
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| 103 | oldmode = global.conf->runmode; |
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| 104 | |
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| 105 | g_free( global.conf ); |
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| 106 | global.conf = conf_load( 0, NULL ); |
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| 107 | |
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| 108 | if( global.conf->runmode != oldmode ) |
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| 109 | { |
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| 110 | log_message( LOGLVL_WARNING, "Can't change RunMode setting at runtime, restoring original setting" ); |
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| 111 | global.conf->runmode = oldmode; |
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| 112 | } |
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| 113 | |
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| 114 | if( global.conf->runmode == RUNMODE_FORKDAEMON ) |
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| 115 | ipc_to_children( cmd ); |
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[0431ea1] | 116 | } |
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| 117 | |
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[54879ab] | 118 | void ipc_master_cmd_restart( irc_t *data, char **cmd ) |
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| 119 | { |
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| 120 | if( global.conf->runmode != RUNMODE_FORKDAEMON ) |
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| 121 | { |
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| 122 | /* Tell child that this is unsupported. */ |
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| 123 | return; |
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| 124 | } |
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| 125 | |
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| 126 | global.restart = -1; |
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[ba9edaa] | 127 | bitlbee_shutdown( NULL, -1, 0 ); |
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[54879ab] | 128 | } |
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| 129 | |
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[6c2404e] | 130 | void ipc_master_cmd_identify( irc_t *data, char **cmd ) |
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| 131 | { |
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| 132 | struct bitlbee_child *child = (void*) data, *old = NULL; |
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[0b09da0] | 133 | char *resp; |
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[6c2404e] | 134 | GSList *l; |
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| 135 | |
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| 136 | if( strcmp( child->nick, cmd[1] ) != 0 ) |
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| 137 | return; |
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| 138 | |
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| 139 | g_free( child->password ); |
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| 140 | child->password = g_strdup( cmd[2] ); |
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| 141 | |
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| 142 | for( l = child_list; l; l = l->next ) |
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| 143 | { |
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| 144 | old = l->data; |
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| 145 | if( nick_cmp( old->nick, child->nick ) == 0 && child != old && |
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[0b09da0] | 146 | old->password && strcmp( old->password, child->password ) == 0 ) |
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[6c2404e] | 147 | break; |
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| 148 | } |
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| 149 | |
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[f545372] | 150 | if( l && !child->to_child && !old->to_child ) |
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[0b09da0] | 151 | { |
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| 152 | resp = "TAKEOVER INIT\r\n"; |
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[f545372] | 153 | child->to_child = old; |
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| 154 | old->to_child = child; |
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[0b09da0] | 155 | } |
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| 156 | else |
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| 157 | { |
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| 158 | /* Won't need the fd since we can't send it anywhere. */ |
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[c5bff81] | 159 | closesocket( child->to_fd ); |
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[0b09da0] | 160 | child->to_fd = -1; |
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| 161 | resp = "TAKEOVER NO\r\n"; |
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| 162 | } |
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| 163 | |
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| 164 | if( write( child->ipc_fd, resp, strlen( resp ) ) != strlen( resp ) ) |
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| 165 | ipc_master_free_one( child ); |
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| 166 | } |
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| 167 | |
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| 168 | |
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| 169 | void ipc_master_cmd_takeover( irc_t *data, char **cmd ) |
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| 170 | { |
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| 171 | struct bitlbee_child *child = (void*) data; |
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[f545372] | 172 | char *fwd = NULL; |
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[0b09da0] | 173 | |
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[c5bff81] | 174 | if( child->to_child == NULL || |
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| 175 | g_slist_find( child_list, child->to_child ) == NULL ) |
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| 176 | return ipc_master_takeover_fail( child, FALSE ); |
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| 177 | |
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[0b09da0] | 178 | if( strcmp( cmd[1], "AUTH" ) == 0 ) |
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| 179 | { |
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[c5bff81] | 180 | /* New connection -> Master */ |
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[0b09da0] | 181 | if( child->to_child && |
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| 182 | child->nick && child->to_child->nick && cmd[2] && |
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| 183 | child->password && child->to_child->password && cmd[3] && |
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| 184 | strcmp( child->nick, child->to_child->nick ) == 0 && |
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| 185 | strcmp( child->nick, cmd[2] ) == 0 && |
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| 186 | strcmp( child->password, child->to_child->password ) == 0 && |
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| 187 | strcmp( child->password, cmd[3] ) == 0 ) |
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| 188 | { |
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| 189 | ipc_send_fd( child->to_child->ipc_fd, child->to_fd ); |
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| 190 | |
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[f545372] | 191 | fwd = irc_build_line( cmd ); |
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| 192 | if( write( child->to_child->ipc_fd, fwd, strlen( fwd ) ) != strlen( fwd ) ) |
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[0b09da0] | 193 | ipc_master_free_one( child ); |
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[f545372] | 194 | g_free( fwd ); |
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[0b09da0] | 195 | } |
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[c5bff81] | 196 | else |
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| 197 | return ipc_master_takeover_fail( child, TRUE ); |
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[0b09da0] | 198 | } |
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[f545372] | 199 | else if( strcmp( cmd[1], "DONE" ) == 0 || strcmp( cmd[1], "FAIL" ) == 0 ) |
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| 200 | { |
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[c5bff81] | 201 | /* Old connection -> Master */ |
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[f545372] | 202 | int fd; |
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| 203 | |
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| 204 | /* The copy was successful (or not), we don't need it anymore. */ |
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[c5bff81] | 205 | closesocket( child->to_fd ); |
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[f545372] | 206 | child->to_fd = -1; |
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| 207 | |
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| 208 | /* Pass it through to the other party, and flush all state. */ |
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| 209 | fwd = irc_build_line( cmd ); |
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| 210 | fd = child->to_child->ipc_fd; |
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| 211 | child->to_child->to_child = NULL; |
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| 212 | child->to_child = NULL; |
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| 213 | if( write( fd, fwd, strlen( fwd ) ) != strlen( fwd ) ) |
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| 214 | ipc_master_free_one( child ); |
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| 215 | g_free( fwd ); |
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| 216 | } |
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[6c2404e] | 217 | } |
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| 218 | |
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[0431ea1] | 219 | static const command_t ipc_master_commands[] = { |
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[2face62] | 220 | { "client", 3, ipc_master_cmd_client, 0 }, |
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[54879ab] | 221 | { "hello", 0, ipc_master_cmd_client, 0 }, |
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[debe871] | 222 | { "nick", 1, ipc_master_cmd_nick, 0 }, |
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[0431ea1] | 223 | { "die", 0, ipc_master_cmd_die, 0 }, |
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[565a1ea] | 224 | { "deaf", 0, ipc_master_cmd_deaf, 0 }, |
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[f4a5940] | 225 | { "wallops", 1, NULL, IPC_CMD_TO_CHILDREN }, |
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[dfc8a46] | 226 | { "wall", 1, NULL, IPC_CMD_TO_CHILDREN }, |
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[2face62] | 227 | { "opermsg", 1, NULL, IPC_CMD_TO_CHILDREN }, |
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[f4a5940] | 228 | { "rehash", 0, ipc_master_cmd_rehash, 0 }, |
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[48721c3] | 229 | { "kill", 2, NULL, IPC_CMD_TO_CHILDREN }, |
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[54879ab] | 230 | { "restart", 0, ipc_master_cmd_restart, 0 }, |
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[6c2404e] | 231 | { "identify", 2, ipc_master_cmd_identify, 0 }, |
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[0b09da0] | 232 | { "takeover", 1, ipc_master_cmd_takeover, 0 }, |
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[0431ea1] | 233 | { NULL } |
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| 234 | }; |
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| 235 | |
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[74c119d] | 236 | |
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[f73b969] | 237 | static void ipc_child_cmd_die( irc_t *irc, char **cmd ) |
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[74c119d] | 238 | { |
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[87de505] | 239 | irc_abort( irc, 0, "Shutdown requested by operator" ); |
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[74c119d] | 240 | } |
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| 241 | |
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[f73b969] | 242 | static void ipc_child_cmd_wallops( irc_t *irc, char **cmd ) |
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[0431ea1] | 243 | { |
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[3af70b0] | 244 | if( !( irc->status & USTATUS_LOGGED_IN ) ) |
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[f73b969] | 245 | return; |
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[daa9e02] | 246 | |
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[0431ea1] | 247 | if( strchr( irc->umode, 'w' ) ) |
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[3ddb7477] | 248 | irc_write( irc, ":%s WALLOPS :%s", irc->root->host, cmd[1] ); |
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[e0ca412] | 249 | } |
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| 250 | |
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[dfc8a46] | 251 | static void ipc_child_cmd_wall( irc_t *irc, char **cmd ) |
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[e0ca412] | 252 | { |
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[3af70b0] | 253 | if( !( irc->status & USTATUS_LOGGED_IN ) ) |
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[f73b969] | 254 | return; |
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[daa9e02] | 255 | |
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[74c119d] | 256 | if( strchr( irc->umode, 's' ) ) |
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[3ddb7477] | 257 | irc_write( irc, ":%s NOTICE %s :%s", irc->root->host, irc->user->nick, cmd[1] ); |
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[0431ea1] | 258 | } |
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| 259 | |
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[f73b969] | 260 | static void ipc_child_cmd_opermsg( irc_t *irc, char **cmd ) |
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[2face62] | 261 | { |
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[3af70b0] | 262 | if( !( irc->status & USTATUS_LOGGED_IN ) ) |
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[f73b969] | 263 | return; |
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[2face62] | 264 | |
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| 265 | if( strchr( irc->umode, 'o' ) ) |
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[3ddb7477] | 266 | irc_write( irc, ":%s NOTICE %s :*** OperMsg *** %s", irc->root->host, irc->user->nick, cmd[1] ); |
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[2face62] | 267 | } |
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| 268 | |
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[f73b969] | 269 | static void ipc_child_cmd_rehash( irc_t *irc, char **cmd ) |
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[f4a5940] | 270 | { |
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| 271 | runmode_t oldmode; |
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| 272 | |
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| 273 | oldmode = global.conf->runmode; |
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| 274 | |
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| 275 | g_free( global.conf ); |
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| 276 | global.conf = conf_load( 0, NULL ); |
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| 277 | |
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| 278 | global.conf->runmode = oldmode; |
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| 279 | } |
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| 280 | |
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[f73b969] | 281 | static void ipc_child_cmd_kill( irc_t *irc, char **cmd ) |
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[48721c3] | 282 | { |
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[3af70b0] | 283 | if( !( irc->status & USTATUS_LOGGED_IN ) ) |
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[f73b969] | 284 | return; |
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[48721c3] | 285 | |
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[3ddb7477] | 286 | if( nick_cmp( cmd[1], irc->user->nick ) != 0 ) |
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[f73b969] | 287 | return; /* It's not for us. */ |
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[48721c3] | 288 | |
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[3ddb7477] | 289 | irc_write( irc, ":%s!%s@%s KILL %s :%s", irc->root->nick, irc->root->nick, irc->root->host, irc->user->nick, cmd[2] ); |
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[f73b969] | 290 | irc_abort( irc, 0, "Killed by operator: %s", cmd[2] ); |
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[48721c3] | 291 | } |
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| 292 | |
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[54879ab] | 293 | static void ipc_child_cmd_hello( irc_t *irc, char **cmd ) |
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| 294 | { |
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[3af70b0] | 295 | if( !( irc->status & USTATUS_LOGGED_IN ) ) |
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[54879ab] | 296 | ipc_to_master_str( "HELLO\r\n" ); |
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| 297 | else |
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[3ddb7477] | 298 | ipc_to_master_str( "HELLO %s %s :%s\r\n", irc->user->host, irc->user->nick, irc->user->fullname ); |
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[54879ab] | 299 | } |
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| 300 | |
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[f545372] | 301 | static void ipc_child_cmd_takeover_yes( void *data ); |
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| 302 | static void ipc_child_cmd_takeover_no( void *data ); |
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| 303 | |
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[0b09da0] | 304 | static void ipc_child_cmd_takeover( irc_t *irc, char **cmd ) |
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| 305 | { |
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| 306 | if( strcmp( cmd[1], "NO" ) == 0 ) |
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| 307 | { |
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[f545372] | 308 | /* Master->New connection */ |
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[0b09da0] | 309 | /* No takeover, finish the login. */ |
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| 310 | } |
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| 311 | else if( strcmp( cmd[1], "INIT" ) == 0 ) |
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| 312 | { |
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[f545372] | 313 | /* Master->New connection */ |
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| 314 | /* Offer to take over the old session, unless for some reason |
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| 315 | we're already logging into IM connections. */ |
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| 316 | if( irc->login_source_id != -1 ) |
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| 317 | query_add( irc, NULL, |
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| 318 | "You're already connected to this server. " |
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| 319 | "Would you like to take over this session?", |
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| 320 | ipc_child_cmd_takeover_yes, |
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| 321 | ipc_child_cmd_takeover_no, irc ); |
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[0b09da0] | 322 | |
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[f545372] | 323 | /* This one's going to connect to accounts, avoid that. */ |
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| 324 | b_event_remove( irc->login_source_id ); |
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| 325 | irc->login_source_id = -1; |
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[0b09da0] | 326 | } |
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| 327 | else if( strcmp( cmd[1], "AUTH" ) == 0 ) |
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| 328 | { |
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[f545372] | 329 | /* Master->Old connection */ |
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[0b09da0] | 330 | if( irc->password && cmd[2] && cmd[3] && |
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| 331 | ipc_child_recv_fd != -1 && |
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| 332 | strcmp( irc->user->nick, cmd[2] ) == 0 && |
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| 333 | strcmp( irc->password, cmd[3] ) == 0 ) |
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| 334 | { |
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[f1c2b21] | 335 | irc_switch_fd( irc, ipc_child_recv_fd ); |
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| 336 | irc_sync( irc ); |
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[f545372] | 337 | irc_usermsg( irc, "You've successfully taken over your old session" ); |
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[f1c2b21] | 338 | ipc_child_recv_fd = -1; |
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[f545372] | 339 | |
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| 340 | ipc_to_master_str( "TAKEOVER DONE\r\n" ); |
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[0b09da0] | 341 | } |
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[f545372] | 342 | else |
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| 343 | { |
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| 344 | ipc_to_master_str( "TAKEOVER FAIL\r\n" ); |
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| 345 | } |
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| 346 | } |
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| 347 | else if( strcmp( cmd[1], "DONE" ) == 0 ) |
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| 348 | { |
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| 349 | /* Master->New connection (now taken over by old process) */ |
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| 350 | irc_free( irc ); |
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| 351 | } |
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| 352 | else if( strcmp( cmd[1], "FAIL" ) == 0 ) |
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| 353 | { |
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| 354 | /* Master->New connection */ |
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| 355 | irc_usermsg( irc, "Could not take over old session" ); |
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[0b09da0] | 356 | } |
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| 357 | } |
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| 358 | |
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[f545372] | 359 | static void ipc_child_cmd_takeover_yes( void *data ) |
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| 360 | { |
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| 361 | irc_t *irc = data; |
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| 362 | |
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| 363 | /* Master->New connection */ |
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| 364 | ipc_to_master_str( "TAKEOVER AUTH %s :%s\r\n", |
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| 365 | irc->user->nick, irc->password ); |
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| 366 | |
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| 367 | /* Drop credentials, we'll shut down soon and shouldn't overwrite |
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| 368 | any settings. */ |
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| 369 | irc_usermsg( irc, "Trying to take over existing session" ); |
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| 370 | |
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| 371 | /* TODO: irc_setpass() should do all of this. */ |
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| 372 | irc_setpass( irc, NULL ); |
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| 373 | irc->status &= ~USTATUS_IDENTIFIED; |
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| 374 | irc_umode_set( irc, "-R", 1 ); |
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| 375 | |
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[f1c2b21] | 376 | irc_desync( irc ); |
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[f545372] | 377 | } |
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| 378 | |
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| 379 | static void ipc_child_cmd_takeover_no( void *data ) |
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| 380 | { |
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| 381 | ipc_to_master_str( "TAKEOVER NO\r\n" ); |
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| 382 | cmd_identify_finish( data, 0, 0 ); |
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| 383 | } |
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| 384 | |
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[0431ea1] | 385 | static const command_t ipc_child_commands[] = { |
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[74c119d] | 386 | { "die", 0, ipc_child_cmd_die, 0 }, |
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| 387 | { "wallops", 1, ipc_child_cmd_wallops, 0 }, |
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[dfc8a46] | 388 | { "wall", 1, ipc_child_cmd_wall, 0 }, |
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[2face62] | 389 | { "opermsg", 1, ipc_child_cmd_opermsg, 0 }, |
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[48721c3] | 390 | { "rehash", 0, ipc_child_cmd_rehash, 0 }, |
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| 391 | { "kill", 2, ipc_child_cmd_kill, 0 }, |
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[54879ab] | 392 | { "hello", 0, ipc_child_cmd_hello, 0 }, |
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[0b09da0] | 393 | { "takeover", 1, ipc_child_cmd_takeover, 0 }, |
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[0431ea1] | 394 | { NULL } |
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| 395 | }; |
---|
| 396 | |
---|
[6c2404e] | 397 | gboolean ipc_child_identify( irc_t *irc ) |
---|
| 398 | { |
---|
| 399 | if( global.conf->runmode == RUNMODE_FORKDAEMON ) |
---|
| 400 | { |
---|
| 401 | if( !ipc_send_fd( global.listen_socket, irc->fd ) ) |
---|
| 402 | ipc_child_disable(); |
---|
| 403 | |
---|
| 404 | ipc_to_master_str( "IDENTIFY %s :%s\r\n", irc->user->nick, irc->password ); |
---|
| 405 | |
---|
| 406 | return TRUE; |
---|
| 407 | } |
---|
| 408 | else |
---|
| 409 | return FALSE; |
---|
| 410 | } |
---|
[74c119d] | 411 | |
---|
[c5bff81] | 412 | static void ipc_master_takeover_fail( struct bitlbee_child *child, gboolean both ) |
---|
| 413 | { |
---|
| 414 | if( child == NULL || g_slist_find( child_list, child ) == NULL ) |
---|
| 415 | return; |
---|
| 416 | |
---|
| 417 | if( both && child->to_child != NULL ) |
---|
| 418 | ipc_master_takeover_fail( child->to_child, FALSE ); |
---|
| 419 | |
---|
| 420 | if( child->to_fd > -1 ) |
---|
| 421 | { |
---|
| 422 | /* Send this error only to the new connection, which can be |
---|
| 423 | recognised by to_fd being set. */ |
---|
| 424 | if( write( child->ipc_fd, "TAKEOVER FAIL\r\n", 15 ) != 15 ) |
---|
| 425 | { |
---|
| 426 | ipc_master_free_one( child ); |
---|
| 427 | return; |
---|
| 428 | } |
---|
| 429 | close( child->to_fd ); |
---|
| 430 | child->to_fd = -1; |
---|
| 431 | } |
---|
| 432 | child->to_child = NULL; |
---|
| 433 | } |
---|
| 434 | |
---|
[0431ea1] | 435 | static void ipc_command_exec( void *data, char **cmd, const command_t *commands ) |
---|
| 436 | { |
---|
[f1d38f2] | 437 | int i, j; |
---|
[0431ea1] | 438 | |
---|
| 439 | if( !cmd[0] ) |
---|
| 440 | return; |
---|
| 441 | |
---|
| 442 | for( i = 0; commands[i].command; i ++ ) |
---|
| 443 | if( g_strcasecmp( commands[i].command, cmd[0] ) == 0 ) |
---|
| 444 | { |
---|
[f1d38f2] | 445 | /* There is no typo in this line: */ |
---|
| 446 | for( j = 1; cmd[j]; j ++ ); j --; |
---|
| 447 | |
---|
| 448 | if( j < commands[i].required_parameters ) |
---|
| 449 | break; |
---|
| 450 | |
---|
[f4a5940] | 451 | if( commands[i].flags & IPC_CMD_TO_CHILDREN ) |
---|
| 452 | ipc_to_children( cmd ); |
---|
| 453 | else |
---|
| 454 | commands[i].execute( data, cmd ); |
---|
| 455 | |
---|
[f1d38f2] | 456 | break; |
---|
[0431ea1] | 457 | } |
---|
| 458 | } |
---|
| 459 | |
---|
[da7b484] | 460 | /* Return just one line. Returns NULL if something broke, an empty string |
---|
| 461 | on temporary "errors" (EAGAIN and friends). */ |
---|
[6c2404e] | 462 | static char *ipc_readline( int fd, int *recv_fd ) |
---|
[0431ea1] | 463 | { |
---|
[6c2404e] | 464 | struct msghdr msg; |
---|
| 465 | struct iovec iov; |
---|
| 466 | char ccmsg[CMSG_SPACE(sizeof(recv_fd))]; |
---|
| 467 | struct cmsghdr *cmsg; |
---|
[da7b484] | 468 | char buf[513], *eol; |
---|
[0431ea1] | 469 | int size; |
---|
| 470 | |
---|
| 471 | /* Because this is internal communication, it should be pretty safe |
---|
| 472 | to just peek at the message, find its length (by searching for the |
---|
| 473 | end-of-line) and then just read that message. With internal |
---|
| 474 | sockets and limites message length, messages should always be |
---|
| 475 | complete. Saves us quite a lot of code and buffering. */ |
---|
[da7b484] | 476 | size = recv( fd, buf, sizeof( buf ) - 1, MSG_PEEK ); |
---|
[0431ea1] | 477 | if( size == 0 || ( size < 0 && !sockerr_again() ) ) |
---|
| 478 | return NULL; |
---|
[1ea13be] | 479 | else if( size < 0 ) /* && sockerr_again() */ |
---|
| 480 | return( g_strdup( "" ) ); |
---|
[0431ea1] | 481 | else |
---|
| 482 | buf[size] = 0; |
---|
| 483 | |
---|
[da7b484] | 484 | if( ( eol = strstr( buf, "\r\n" ) ) == NULL ) |
---|
[0431ea1] | 485 | return NULL; |
---|
| 486 | else |
---|
| 487 | size = eol - buf + 2; |
---|
| 488 | |
---|
[6c2404e] | 489 | iov.iov_base = buf; |
---|
| 490 | iov.iov_len = size; |
---|
| 491 | |
---|
| 492 | memset( &msg, 0, sizeof( msg ) ); |
---|
| 493 | msg.msg_iov = &iov; |
---|
| 494 | msg.msg_iovlen = 1; |
---|
| 495 | msg.msg_control = ccmsg; |
---|
| 496 | msg.msg_controllen = sizeof( ccmsg ); |
---|
| 497 | |
---|
| 498 | if( recvmsg( fd, &msg, 0 ) != size ) |
---|
[0431ea1] | 499 | return NULL; |
---|
[6c2404e] | 500 | |
---|
| 501 | if( recv_fd ) |
---|
| 502 | for( cmsg = CMSG_FIRSTHDR( &msg ); cmsg; cmsg = CMSG_NXTHDR( &msg, cmsg ) ) |
---|
| 503 | if( cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS ) |
---|
| 504 | { |
---|
| 505 | /* Getting more than one shouldn't happen but if it does, |
---|
| 506 | make sure we don't leave them around. */ |
---|
| 507 | if( *recv_fd != -1 ) |
---|
| 508 | close( *recv_fd ); |
---|
| 509 | |
---|
| 510 | *recv_fd = *(int*) CMSG_DATA( cmsg ); |
---|
[0b09da0] | 511 | fprintf( stderr, "pid %d received fd %d\n", (int) getpid(), *recv_fd ); |
---|
[6c2404e] | 512 | } |
---|
| 513 | |
---|
[0b09da0] | 514 | fprintf( stderr, "pid %d received: %s", (int) getpid(), buf ); |
---|
[6c2404e] | 515 | return g_strndup( buf, size - 2 ); |
---|
[0431ea1] | 516 | } |
---|
| 517 | |
---|
[ba9edaa] | 518 | gboolean ipc_master_read( gpointer data, gint source, b_input_condition cond ) |
---|
[0431ea1] | 519 | { |
---|
[6c2404e] | 520 | struct bitlbee_child *child = data; |
---|
[0431ea1] | 521 | char *buf, **cmd; |
---|
| 522 | |
---|
[6c2404e] | 523 | if( ( buf = ipc_readline( source, &child->to_fd ) ) ) |
---|
[0431ea1] | 524 | { |
---|
| 525 | cmd = irc_parse_line( buf ); |
---|
| 526 | if( cmd ) |
---|
[edc767b] | 527 | { |
---|
[6c2404e] | 528 | ipc_command_exec( child, cmd, ipc_master_commands ); |
---|
[edc767b] | 529 | g_free( cmd ); |
---|
| 530 | } |
---|
| 531 | g_free( buf ); |
---|
[0431ea1] | 532 | } |
---|
| 533 | else |
---|
| 534 | { |
---|
[171ef85] | 535 | ipc_master_free_fd( source ); |
---|
[0431ea1] | 536 | } |
---|
[ba9edaa] | 537 | |
---|
| 538 | return TRUE; |
---|
[0431ea1] | 539 | } |
---|
| 540 | |
---|
[ba9edaa] | 541 | gboolean ipc_child_read( gpointer data, gint source, b_input_condition cond ) |
---|
[0431ea1] | 542 | { |
---|
| 543 | char *buf, **cmd; |
---|
| 544 | |
---|
[0b09da0] | 545 | if( ( buf = ipc_readline( source, &ipc_child_recv_fd ) ) ) |
---|
[0431ea1] | 546 | { |
---|
| 547 | cmd = irc_parse_line( buf ); |
---|
| 548 | if( cmd ) |
---|
[edc767b] | 549 | { |
---|
[0431ea1] | 550 | ipc_command_exec( data, cmd, ipc_child_commands ); |
---|
[edc767b] | 551 | g_free( cmd ); |
---|
| 552 | } |
---|
| 553 | g_free( buf ); |
---|
[0431ea1] | 554 | } |
---|
| 555 | else |
---|
| 556 | { |
---|
[171ef85] | 557 | ipc_child_disable(); |
---|
[0431ea1] | 558 | } |
---|
[ba9edaa] | 559 | |
---|
| 560 | return TRUE; |
---|
[0431ea1] | 561 | } |
---|
| 562 | |
---|
| 563 | void ipc_to_master( char **cmd ) |
---|
| 564 | { |
---|
| 565 | if( global.conf->runmode == RUNMODE_FORKDAEMON ) |
---|
| 566 | { |
---|
[74c119d] | 567 | char *s = irc_build_line( cmd ); |
---|
[2face62] | 568 | ipc_to_master_str( "%s", s ); |
---|
[f4a5940] | 569 | g_free( s ); |
---|
| 570 | } |
---|
| 571 | else if( global.conf->runmode == RUNMODE_DAEMON ) |
---|
| 572 | { |
---|
| 573 | ipc_command_exec( NULL, cmd, ipc_master_commands ); |
---|
| 574 | } |
---|
| 575 | } |
---|
| 576 | |
---|
[2face62] | 577 | void ipc_to_master_str( char *format, ... ) |
---|
[f4a5940] | 578 | { |
---|
[2face62] | 579 | char *msg_buf; |
---|
| 580 | va_list params; |
---|
| 581 | |
---|
| 582 | va_start( params, format ); |
---|
| 583 | msg_buf = g_strdup_vprintf( format, params ); |
---|
| 584 | va_end( params ); |
---|
| 585 | |
---|
| 586 | if( strlen( msg_buf ) > 512 ) |
---|
| 587 | { |
---|
| 588 | /* Don't send it, it's too long... */ |
---|
| 589 | } |
---|
| 590 | else if( global.conf->runmode == RUNMODE_FORKDAEMON ) |
---|
[f4a5940] | 591 | { |
---|
[171ef85] | 592 | if( global.listen_socket >= 0 ) |
---|
| 593 | if( write( global.listen_socket, msg_buf, strlen( msg_buf ) ) <= 0 ) |
---|
| 594 | ipc_child_disable(); |
---|
[f4a5940] | 595 | } |
---|
| 596 | else if( global.conf->runmode == RUNMODE_DAEMON ) |
---|
| 597 | { |
---|
[bd9b00f] | 598 | char **cmd, *s; |
---|
| 599 | |
---|
| 600 | if( ( s = strchr( msg_buf, '\r' ) ) ) |
---|
| 601 | *s = 0; |
---|
[f4a5940] | 602 | |
---|
[2face62] | 603 | cmd = irc_parse_line( msg_buf ); |
---|
[f4a5940] | 604 | ipc_command_exec( NULL, cmd, ipc_master_commands ); |
---|
| 605 | g_free( cmd ); |
---|
[74c119d] | 606 | } |
---|
[2face62] | 607 | |
---|
| 608 | g_free( msg_buf ); |
---|
[74c119d] | 609 | } |
---|
| 610 | |
---|
| 611 | void ipc_to_children( char **cmd ) |
---|
| 612 | { |
---|
| 613 | if( global.conf->runmode == RUNMODE_FORKDAEMON ) |
---|
| 614 | { |
---|
| 615 | char *msg_buf = irc_build_line( cmd ); |
---|
[2face62] | 616 | ipc_to_children_str( "%s", msg_buf ); |
---|
[74c119d] | 617 | g_free( msg_buf ); |
---|
| 618 | } |
---|
[f4a5940] | 619 | else if( global.conf->runmode == RUNMODE_DAEMON ) |
---|
| 620 | { |
---|
| 621 | GSList *l; |
---|
| 622 | |
---|
| 623 | for( l = irc_connection_list; l; l = l->next ) |
---|
| 624 | ipc_command_exec( l->data, cmd, ipc_child_commands ); |
---|
| 625 | } |
---|
[74c119d] | 626 | } |
---|
| 627 | |
---|
[2face62] | 628 | void ipc_to_children_str( char *format, ... ) |
---|
[74c119d] | 629 | { |
---|
[2face62] | 630 | char *msg_buf; |
---|
| 631 | va_list params; |
---|
| 632 | |
---|
| 633 | va_start( params, format ); |
---|
| 634 | msg_buf = g_strdup_vprintf( format, params ); |
---|
| 635 | va_end( params ); |
---|
| 636 | |
---|
| 637 | if( strlen( msg_buf ) > 512 ) |
---|
| 638 | { |
---|
| 639 | /* Don't send it, it's too long... */ |
---|
| 640 | } |
---|
| 641 | else if( global.conf->runmode == RUNMODE_FORKDAEMON ) |
---|
[74c119d] | 642 | { |
---|
| 643 | int msg_len = strlen( msg_buf ); |
---|
[171ef85] | 644 | GSList *l, *next; |
---|
[0431ea1] | 645 | |
---|
[171ef85] | 646 | for( l = child_list; l; l = next ) |
---|
[0431ea1] | 647 | { |
---|
[74c119d] | 648 | struct bitlbee_child *c = l->data; |
---|
[171ef85] | 649 | |
---|
| 650 | next = l->next; |
---|
| 651 | if( write( c->ipc_fd, msg_buf, msg_len ) <= 0 ) |
---|
| 652 | ipc_master_free_one( c ); |
---|
[0431ea1] | 653 | } |
---|
| 654 | } |
---|
[f4a5940] | 655 | else if( global.conf->runmode == RUNMODE_DAEMON ) |
---|
| 656 | { |
---|
[bd9b00f] | 657 | char **cmd, *s; |
---|
| 658 | |
---|
| 659 | if( ( s = strchr( msg_buf, '\r' ) ) ) |
---|
| 660 | *s = 0; |
---|
[f4a5940] | 661 | |
---|
[2face62] | 662 | cmd = irc_parse_line( msg_buf ); |
---|
[f4a5940] | 663 | ipc_to_children( cmd ); |
---|
| 664 | g_free( cmd ); |
---|
| 665 | } |
---|
[2face62] | 666 | |
---|
| 667 | g_free( msg_buf ); |
---|
| 668 | } |
---|
| 669 | |
---|
[6c2404e] | 670 | static gboolean ipc_send_fd( int fd, int send_fd ) |
---|
| 671 | { |
---|
| 672 | struct msghdr msg; |
---|
| 673 | struct iovec iov; |
---|
| 674 | char ccmsg[CMSG_SPACE(sizeof(fd))]; |
---|
| 675 | struct cmsghdr *cmsg; |
---|
| 676 | |
---|
| 677 | memset( &msg, 0, sizeof( msg ) ); |
---|
[c5bff81] | 678 | iov.iov_base = "0x90\r\n"; /* Ja, noppes */ |
---|
[6c2404e] | 679 | iov.iov_len = 6; |
---|
| 680 | msg.msg_iov = &iov; |
---|
| 681 | msg.msg_iovlen = 1; |
---|
| 682 | |
---|
| 683 | msg.msg_control = ccmsg; |
---|
| 684 | msg.msg_controllen = sizeof( ccmsg ); |
---|
| 685 | cmsg = CMSG_FIRSTHDR( &msg ); |
---|
| 686 | cmsg->cmsg_level = SOL_SOCKET; |
---|
| 687 | cmsg->cmsg_type = SCM_RIGHTS; |
---|
| 688 | cmsg->cmsg_len = CMSG_LEN( sizeof( send_fd ) ); |
---|
| 689 | *(int*)CMSG_DATA( cmsg ) = send_fd; |
---|
| 690 | msg.msg_controllen = cmsg->cmsg_len; |
---|
| 691 | |
---|
| 692 | return sendmsg( fd, &msg, 0 ) == 6; |
---|
| 693 | } |
---|
| 694 | |
---|
[2face62] | 695 | void ipc_master_free_one( struct bitlbee_child *c ) |
---|
| 696 | { |
---|
[c5bff81] | 697 | GSList *l; |
---|
| 698 | |
---|
[ba9edaa] | 699 | b_event_remove( c->ipc_inpa ); |
---|
[2face62] | 700 | closesocket( c->ipc_fd ); |
---|
| 701 | |
---|
[6c2404e] | 702 | if( c->to_fd != -1 ) |
---|
| 703 | close( c->to_fd ); |
---|
| 704 | |
---|
[2face62] | 705 | g_free( c->host ); |
---|
| 706 | g_free( c->nick ); |
---|
| 707 | g_free( c->realname ); |
---|
[6c2404e] | 708 | g_free( c->password ); |
---|
[2face62] | 709 | g_free( c ); |
---|
[c5bff81] | 710 | |
---|
| 711 | child_list = g_slist_remove( child_list, c ); |
---|
| 712 | |
---|
| 713 | /* Also, if any child has a reference to this one, remove it. */ |
---|
| 714 | for( l = child_list; l; l = l->next ) |
---|
| 715 | { |
---|
| 716 | struct bitlbee_child *oc = l->data; |
---|
| 717 | |
---|
| 718 | if( oc->to_child == c ) |
---|
| 719 | ipc_master_takeover_fail( oc, FALSE ); |
---|
| 720 | } |
---|
[2face62] | 721 | } |
---|
| 722 | |
---|
[171ef85] | 723 | void ipc_master_free_fd( int fd ) |
---|
| 724 | { |
---|
| 725 | GSList *l; |
---|
| 726 | struct bitlbee_child *c; |
---|
| 727 | |
---|
| 728 | for( l = child_list; l; l = l->next ) |
---|
| 729 | { |
---|
| 730 | c = l->data; |
---|
| 731 | if( c->ipc_fd == fd ) |
---|
| 732 | { |
---|
| 733 | ipc_master_free_one( c ); |
---|
| 734 | break; |
---|
| 735 | } |
---|
| 736 | } |
---|
| 737 | } |
---|
| 738 | |
---|
[2face62] | 739 | void ipc_master_free_all() |
---|
| 740 | { |
---|
[c5bff81] | 741 | while( child_list ) |
---|
| 742 | ipc_master_free_one( child_list->data ); |
---|
[0431ea1] | 743 | } |
---|
[54879ab] | 744 | |
---|
[171ef85] | 745 | void ipc_child_disable() |
---|
| 746 | { |
---|
| 747 | b_event_remove( global.listen_watch_source_id ); |
---|
| 748 | close( global.listen_socket ); |
---|
| 749 | |
---|
| 750 | global.listen_socket = -1; |
---|
| 751 | } |
---|
| 752 | |
---|
[80c1e4d] | 753 | #ifndef _WIN32 |
---|
[54879ab] | 754 | char *ipc_master_save_state() |
---|
| 755 | { |
---|
| 756 | char *fn = g_strdup( "/tmp/bee-restart.XXXXXX" ); |
---|
| 757 | int fd = mkstemp( fn ); |
---|
| 758 | GSList *l; |
---|
| 759 | FILE *fp; |
---|
| 760 | int i; |
---|
| 761 | |
---|
| 762 | if( fd == -1 ) |
---|
| 763 | { |
---|
| 764 | log_message( LOGLVL_ERROR, "Could not create temporary file: %s", strerror( errno ) ); |
---|
| 765 | g_free( fn ); |
---|
| 766 | return NULL; |
---|
| 767 | } |
---|
| 768 | |
---|
| 769 | /* This is more convenient now. */ |
---|
| 770 | fp = fdopen( fd, "w" ); |
---|
| 771 | |
---|
| 772 | for( l = child_list, i = 0; l; l = l->next ) |
---|
| 773 | i ++; |
---|
| 774 | |
---|
| 775 | /* Number of client processes. */ |
---|
| 776 | fprintf( fp, "%d\n", i ); |
---|
| 777 | |
---|
| 778 | for( l = child_list; l; l = l->next ) |
---|
[52744f8] | 779 | fprintf( fp, "%d %d\n", (int) ((struct bitlbee_child*)l->data)->pid, |
---|
[54879ab] | 780 | ((struct bitlbee_child*)l->data)->ipc_fd ); |
---|
| 781 | |
---|
| 782 | if( fclose( fp ) == 0 ) |
---|
| 783 | { |
---|
| 784 | return fn; |
---|
| 785 | } |
---|
| 786 | else |
---|
| 787 | { |
---|
| 788 | unlink( fn ); |
---|
| 789 | g_free( fn ); |
---|
| 790 | return NULL; |
---|
| 791 | } |
---|
| 792 | } |
---|
| 793 | |
---|
[6dff9d4] | 794 | |
---|
[ba9edaa] | 795 | static gboolean new_ipc_client( gpointer data, gint serversock, b_input_condition cond ) |
---|
[6dff9d4] | 796 | { |
---|
| 797 | struct bitlbee_child *child = g_new0( struct bitlbee_child, 1 ); |
---|
[a0d04d6] | 798 | |
---|
[6c2404e] | 799 | child->to_fd = -1; |
---|
[a0d04d6] | 800 | child->ipc_fd = accept( serversock, NULL, 0 ); |
---|
| 801 | if( child->ipc_fd == -1 ) |
---|
| 802 | { |
---|
[8a56e52] | 803 | log_message( LOGLVL_WARNING, "Unable to accept connection on UNIX domain socket: %s", strerror(errno) ); |
---|
| 804 | return TRUE; |
---|
| 805 | } |
---|
[6dff9d4] | 806 | |
---|
[e046390] | 807 | child->ipc_inpa = b_input_add( child->ipc_fd, B_EV_IO_READ, ipc_master_read, child ); |
---|
[a0d04d6] | 808 | |
---|
[6c2404e] | 809 | child_list = g_slist_prepend( child_list, child ); |
---|
[ba9edaa] | 810 | |
---|
[6dff9d4] | 811 | return TRUE; |
---|
| 812 | } |
---|
| 813 | |
---|
| 814 | int ipc_master_listen_socket() |
---|
| 815 | { |
---|
| 816 | struct sockaddr_un un_addr; |
---|
| 817 | int serversock; |
---|
| 818 | |
---|
| 819 | /* Clean up old socket files that were hanging around.. */ |
---|
[8a56e52] | 820 | if (unlink(IPCSOCKET) == -1 && errno != ENOENT) { |
---|
| 821 | log_message( LOGLVL_ERROR, "Could not remove old IPC socket at %s: %s", IPCSOCKET, strerror(errno) ); |
---|
| 822 | return 0; |
---|
| 823 | } |
---|
[6dff9d4] | 824 | |
---|
| 825 | un_addr.sun_family = AF_UNIX; |
---|
| 826 | strcpy(un_addr.sun_path, IPCSOCKET); |
---|
| 827 | |
---|
| 828 | serversock = socket(AF_UNIX, SOCK_STREAM, PF_UNIX); |
---|
| 829 | |
---|
[8a56e52] | 830 | if (serversock == -1) { |
---|
| 831 | log_message( LOGLVL_WARNING, "Unable to create UNIX socket: %s", strerror(errno) ); |
---|
| 832 | return 0; |
---|
| 833 | } |
---|
[6dff9d4] | 834 | |
---|
[5d6c178] | 835 | if (bind(serversock, (struct sockaddr *)&un_addr, sizeof(un_addr)) == -1) { |
---|
[8a56e52] | 836 | log_message( LOGLVL_WARNING, "Unable to bind UNIX socket to %s: %s", IPCSOCKET, strerror(errno) ); |
---|
| 837 | return 0; |
---|
| 838 | } |
---|
| 839 | |
---|
| 840 | if (listen(serversock, 5) == -1) { |
---|
| 841 | log_message( LOGLVL_WARNING, "Unable to listen on UNIX socket: %s", strerror(errno) ); |
---|
| 842 | return 0; |
---|
| 843 | } |
---|
[6dff9d4] | 844 | |
---|
[e046390] | 845 | b_input_add( serversock, B_EV_IO_READ, new_ipc_client, NULL ); |
---|
[8a56e52] | 846 | |
---|
[6dff9d4] | 847 | return 1; |
---|
| 848 | } |
---|
| 849 | #else |
---|
[1cda4f3] | 850 | int ipc_master_listen_socket() |
---|
| 851 | { |
---|
[6dff9d4] | 852 | /* FIXME: Open named pipe \\.\BITLBEE */ |
---|
[1cda4f3] | 853 | return 0; |
---|
| 854 | } |
---|
[6dff9d4] | 855 | #endif |
---|
| 856 | |
---|
[cd63d58] | 857 | int ipc_master_load_state( char *statefile ) |
---|
[54879ab] | 858 | { |
---|
| 859 | struct bitlbee_child *child; |
---|
| 860 | FILE *fp; |
---|
| 861 | int i, n; |
---|
| 862 | |
---|
| 863 | if( statefile == NULL ) |
---|
| 864 | return 0; |
---|
[cd63d58] | 865 | |
---|
[54879ab] | 866 | fp = fopen( statefile, "r" ); |
---|
| 867 | unlink( statefile ); /* Why do it later? :-) */ |
---|
| 868 | if( fp == NULL ) |
---|
| 869 | return 0; |
---|
| 870 | |
---|
| 871 | if( fscanf( fp, "%d", &n ) != 1 ) |
---|
| 872 | { |
---|
| 873 | log_message( LOGLVL_WARNING, "Could not import state information for child processes." ); |
---|
| 874 | fclose( fp ); |
---|
| 875 | return 0; |
---|
| 876 | } |
---|
| 877 | |
---|
| 878 | log_message( LOGLVL_INFO, "Importing information for %d child processes.", n ); |
---|
| 879 | for( i = 0; i < n; i ++ ) |
---|
| 880 | { |
---|
| 881 | child = g_new0( struct bitlbee_child, 1 ); |
---|
| 882 | |
---|
[52744f8] | 883 | if( fscanf( fp, "%d %d", (int *) &child->pid, &child->ipc_fd ) != 2 ) |
---|
[54879ab] | 884 | { |
---|
| 885 | log_message( LOGLVL_WARNING, "Unexpected end of file: Only processed %d clients.", i ); |
---|
| 886 | g_free( child ); |
---|
| 887 | fclose( fp ); |
---|
| 888 | return 0; |
---|
| 889 | } |
---|
[e046390] | 890 | child->ipc_inpa = b_input_add( child->ipc_fd, B_EV_IO_READ, ipc_master_read, child ); |
---|
[6c2404e] | 891 | child->to_fd = -1; |
---|
[54879ab] | 892 | |
---|
[6c2404e] | 893 | child_list = g_slist_prepend( child_list, child ); |
---|
[54879ab] | 894 | } |
---|
| 895 | |
---|
| 896 | ipc_to_children_str( "HELLO\r\n" ); |
---|
| 897 | ipc_to_children_str( "OPERMSG :New BitlBee master process started (version " BITLBEE_VERSION ")\r\n" ); |
---|
| 898 | |
---|
[dd89a55] | 899 | fclose( fp ); |
---|
[54879ab] | 900 | return 1; |
---|
| 901 | } |
---|