[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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[f73b969] | 37 | static void ipc_master_cmd_client( irc_t *data, char **cmd ) |
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[2face62] | 38 | { |
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[5e713f6] | 39 | /* Normally data points at an irc_t block, but for the IPC master |
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| 40 | this is different. We think this scary cast is better than |
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| 41 | creating a new command_t structure, just to make the compiler |
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| 42 | happy. */ |
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[2face62] | 43 | struct bitlbee_child *child = (void*) data; |
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| 44 | |
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[54879ab] | 45 | if( child && cmd[1] ) |
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[bd9b00f] | 46 | { |
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| 47 | child->host = g_strdup( cmd[1] ); |
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| 48 | child->nick = g_strdup( cmd[2] ); |
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| 49 | child->realname = g_strdup( cmd[3] ); |
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| 50 | } |
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[2face62] | 51 | |
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[54879ab] | 52 | if( g_strcasecmp( cmd[0], "CLIENT" ) == 0 ) |
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| 53 | ipc_to_children_str( "OPERMSG :Client connecting (PID=%d): %s@%s (%s)\r\n", |
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[52744f8] | 54 | (int) ( child ? child->pid : -1 ), cmd[2], cmd[1], cmd[3] ); |
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[2face62] | 55 | } |
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| 56 | |
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[f73b969] | 57 | static void ipc_master_cmd_die( irc_t *data, char **cmd ) |
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[0431ea1] | 58 | { |
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[74c119d] | 59 | if( global.conf->runmode == RUNMODE_FORKDAEMON ) |
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| 60 | ipc_to_children_str( "DIE\r\n" ); |
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| 61 | |
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[ba9edaa] | 62 | bitlbee_shutdown( NULL, -1, 0 ); |
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[0431ea1] | 63 | } |
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| 64 | |
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[565a1ea] | 65 | static void ipc_master_cmd_deaf( irc_t *data, char **cmd ) |
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| 66 | { |
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| 67 | if( global.conf->runmode == RUNMODE_DAEMON ) |
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| 68 | { |
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| 69 | b_event_remove( global.listen_watch_source_id ); |
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| 70 | close( global.listen_socket ); |
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| 71 | |
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| 72 | global.listen_socket = global.listen_watch_source_id = -1; |
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| 73 | |
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| 74 | ipc_to_children_str( "OPERMSG :Closed listening socket, waiting " |
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| 75 | "for all users to disconnect." ); |
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| 76 | } |
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| 77 | else |
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| 78 | { |
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| 79 | ipc_to_children_str( "OPERMSG :The DEAF command only works in " |
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| 80 | "normal daemon mode. Try DIE instead." ); |
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| 81 | } |
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| 82 | } |
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| 83 | |
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[f73b969] | 84 | void ipc_master_cmd_rehash( irc_t *data, char **cmd ) |
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[0431ea1] | 85 | { |
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[f4a5940] | 86 | runmode_t oldmode; |
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| 87 | |
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| 88 | oldmode = global.conf->runmode; |
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| 89 | |
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| 90 | g_free( global.conf ); |
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| 91 | global.conf = conf_load( 0, NULL ); |
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| 92 | |
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| 93 | if( global.conf->runmode != oldmode ) |
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| 94 | { |
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| 95 | log_message( LOGLVL_WARNING, "Can't change RunMode setting at runtime, restoring original setting" ); |
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| 96 | global.conf->runmode = oldmode; |
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| 97 | } |
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| 98 | |
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| 99 | if( global.conf->runmode == RUNMODE_FORKDAEMON ) |
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| 100 | ipc_to_children( cmd ); |
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[0431ea1] | 101 | } |
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| 102 | |
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[54879ab] | 103 | void ipc_master_cmd_restart( irc_t *data, char **cmd ) |
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| 104 | { |
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| 105 | if( global.conf->runmode != RUNMODE_FORKDAEMON ) |
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| 106 | { |
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| 107 | /* Tell child that this is unsupported. */ |
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| 108 | return; |
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| 109 | } |
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| 110 | |
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| 111 | global.restart = -1; |
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[ba9edaa] | 112 | bitlbee_shutdown( NULL, -1, 0 ); |
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[54879ab] | 113 | } |
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| 114 | |
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[6c2404e] | 115 | void ipc_master_cmd_identify( irc_t *data, char **cmd ) |
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| 116 | { |
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| 117 | struct bitlbee_child *child = (void*) data, *old = NULL; |
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[0b09da0] | 118 | char *resp; |
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[6c2404e] | 119 | GSList *l; |
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| 120 | |
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| 121 | if( strcmp( child->nick, cmd[1] ) != 0 ) |
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| 122 | return; |
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| 123 | |
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| 124 | g_free( child->password ); |
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| 125 | child->password = g_strdup( cmd[2] ); |
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| 126 | |
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| 127 | for( l = child_list; l; l = l->next ) |
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| 128 | { |
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| 129 | old = l->data; |
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| 130 | if( nick_cmp( old->nick, child->nick ) == 0 && child != old && |
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[0b09da0] | 131 | old->password && strcmp( old->password, child->password ) == 0 ) |
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[6c2404e] | 132 | break; |
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| 133 | } |
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| 134 | |
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[f545372] | 135 | if( l && !child->to_child && !old->to_child ) |
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[0b09da0] | 136 | { |
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| 137 | resp = "TAKEOVER INIT\r\n"; |
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[f545372] | 138 | child->to_child = old; |
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| 139 | old->to_child = child; |
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[0b09da0] | 140 | } |
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| 141 | else |
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| 142 | { |
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| 143 | /* Won't need the fd since we can't send it anywhere. */ |
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| 144 | close( child->to_fd ); |
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| 145 | child->to_fd = -1; |
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| 146 | resp = "TAKEOVER NO\r\n"; |
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| 147 | } |
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| 148 | |
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| 149 | if( write( child->ipc_fd, resp, strlen( resp ) ) != strlen( resp ) ) |
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| 150 | { |
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| 151 | ipc_master_free_one( child ); |
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| 152 | child_list = g_slist_remove( child_list, child ); |
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| 153 | } |
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| 154 | } |
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| 155 | |
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| 156 | static gboolean ipc_send_fd( int fd, int send_fd ); |
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| 157 | |
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| 158 | void ipc_master_cmd_takeover( irc_t *data, char **cmd ) |
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| 159 | { |
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| 160 | struct bitlbee_child *child = (void*) data; |
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[f545372] | 161 | char *fwd = NULL; |
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[0b09da0] | 162 | |
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| 163 | /* TODO: Check if child->to_child is still valid, etc. */ |
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| 164 | if( strcmp( cmd[1], "AUTH" ) == 0 ) |
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| 165 | { |
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| 166 | if( child->to_child && |
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| 167 | child->nick && child->to_child->nick && cmd[2] && |
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| 168 | child->password && child->to_child->password && cmd[3] && |
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| 169 | strcmp( child->nick, child->to_child->nick ) == 0 && |
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| 170 | strcmp( child->nick, cmd[2] ) == 0 && |
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| 171 | strcmp( child->password, child->to_child->password ) == 0 && |
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| 172 | strcmp( child->password, cmd[3] ) == 0 ) |
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| 173 | { |
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| 174 | ipc_send_fd( child->to_child->ipc_fd, child->to_fd ); |
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| 175 | |
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[f545372] | 176 | fwd = irc_build_line( cmd ); |
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| 177 | if( write( child->to_child->ipc_fd, fwd, strlen( fwd ) ) != strlen( fwd ) ) |
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[0b09da0] | 178 | { |
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| 179 | ipc_master_free_one( child ); |
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| 180 | child_list = g_slist_remove( child_list, child ); |
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| 181 | } |
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[f545372] | 182 | g_free( fwd ); |
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[0b09da0] | 183 | } |
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| 184 | } |
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[f545372] | 185 | else if( strcmp( cmd[1], "DONE" ) == 0 || strcmp( cmd[1], "FAIL" ) == 0 ) |
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| 186 | { |
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| 187 | int fd; |
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| 188 | |
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| 189 | /* The copy was successful (or not), we don't need it anymore. */ |
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| 190 | close( child->to_fd ); |
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| 191 | child->to_fd = -1; |
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| 192 | |
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| 193 | /* Pass it through to the other party, and flush all state. */ |
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| 194 | fwd = irc_build_line( cmd ); |
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| 195 | fd = child->to_child->ipc_fd; |
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| 196 | child->to_child->to_child = NULL; |
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| 197 | child->to_child = NULL; |
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| 198 | if( write( fd, fwd, strlen( fwd ) ) != strlen( fwd ) ) |
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| 199 | { |
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| 200 | ipc_master_free_one( child ); |
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| 201 | child_list = g_slist_remove( child_list, child ); |
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| 202 | } |
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| 203 | g_free( fwd ); |
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| 204 | } |
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[6c2404e] | 205 | } |
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| 206 | |
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[0431ea1] | 207 | static const command_t ipc_master_commands[] = { |
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[2face62] | 208 | { "client", 3, ipc_master_cmd_client, 0 }, |
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[54879ab] | 209 | { "hello", 0, ipc_master_cmd_client, 0 }, |
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[0431ea1] | 210 | { "die", 0, ipc_master_cmd_die, 0 }, |
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[565a1ea] | 211 | { "deaf", 0, ipc_master_cmd_deaf, 0 }, |
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[f4a5940] | 212 | { "wallops", 1, NULL, IPC_CMD_TO_CHILDREN }, |
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[dfc8a46] | 213 | { "wall", 1, NULL, IPC_CMD_TO_CHILDREN }, |
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[2face62] | 214 | { "opermsg", 1, NULL, IPC_CMD_TO_CHILDREN }, |
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[f4a5940] | 215 | { "rehash", 0, ipc_master_cmd_rehash, 0 }, |
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[48721c3] | 216 | { "kill", 2, NULL, IPC_CMD_TO_CHILDREN }, |
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[54879ab] | 217 | { "restart", 0, ipc_master_cmd_restart, 0 }, |
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[6c2404e] | 218 | { "identify", 2, ipc_master_cmd_identify, 0 }, |
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[0b09da0] | 219 | { "takeover", 1, ipc_master_cmd_takeover, 0 }, |
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[0431ea1] | 220 | { NULL } |
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| 221 | }; |
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| 222 | |
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[74c119d] | 223 | |
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[f73b969] | 224 | static void ipc_child_cmd_die( irc_t *irc, char **cmd ) |
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[74c119d] | 225 | { |
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[87de505] | 226 | irc_abort( irc, 0, "Shutdown requested by operator" ); |
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[74c119d] | 227 | } |
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| 228 | |
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[f73b969] | 229 | static void ipc_child_cmd_wallops( irc_t *irc, char **cmd ) |
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[0431ea1] | 230 | { |
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[3af70b0] | 231 | if( !( irc->status & USTATUS_LOGGED_IN ) ) |
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[f73b969] | 232 | return; |
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[daa9e02] | 233 | |
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[0431ea1] | 234 | if( strchr( irc->umode, 'w' ) ) |
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[3ddb7477] | 235 | irc_write( irc, ":%s WALLOPS :%s", irc->root->host, cmd[1] ); |
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[e0ca412] | 236 | } |
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| 237 | |
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[dfc8a46] | 238 | static void ipc_child_cmd_wall( irc_t *irc, char **cmd ) |
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[e0ca412] | 239 | { |
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[3af70b0] | 240 | if( !( irc->status & USTATUS_LOGGED_IN ) ) |
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[f73b969] | 241 | return; |
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[daa9e02] | 242 | |
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[74c119d] | 243 | if( strchr( irc->umode, 's' ) ) |
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[3ddb7477] | 244 | irc_write( irc, ":%s NOTICE %s :%s", irc->root->host, irc->user->nick, cmd[1] ); |
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[0431ea1] | 245 | } |
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| 246 | |
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[f73b969] | 247 | static void ipc_child_cmd_opermsg( irc_t *irc, char **cmd ) |
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[2face62] | 248 | { |
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[3af70b0] | 249 | if( !( irc->status & USTATUS_LOGGED_IN ) ) |
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[f73b969] | 250 | return; |
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[2face62] | 251 | |
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| 252 | if( strchr( irc->umode, 'o' ) ) |
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[3ddb7477] | 253 | irc_write( irc, ":%s NOTICE %s :*** OperMsg *** %s", irc->root->host, irc->user->nick, cmd[1] ); |
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[2face62] | 254 | } |
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| 255 | |
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[f73b969] | 256 | static void ipc_child_cmd_rehash( irc_t *irc, char **cmd ) |
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[f4a5940] | 257 | { |
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| 258 | runmode_t oldmode; |
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| 259 | |
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| 260 | oldmode = global.conf->runmode; |
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| 261 | |
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| 262 | g_free( global.conf ); |
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| 263 | global.conf = conf_load( 0, NULL ); |
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| 264 | |
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| 265 | global.conf->runmode = oldmode; |
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| 266 | } |
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| 267 | |
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[f73b969] | 268 | static void ipc_child_cmd_kill( irc_t *irc, char **cmd ) |
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[48721c3] | 269 | { |
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[3af70b0] | 270 | if( !( irc->status & USTATUS_LOGGED_IN ) ) |
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[f73b969] | 271 | return; |
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[48721c3] | 272 | |
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[3ddb7477] | 273 | if( nick_cmp( cmd[1], irc->user->nick ) != 0 ) |
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[f73b969] | 274 | return; /* It's not for us. */ |
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[48721c3] | 275 | |
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[3ddb7477] | 276 | 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] | 277 | irc_abort( irc, 0, "Killed by operator: %s", cmd[2] ); |
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[48721c3] | 278 | } |
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| 279 | |
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[54879ab] | 280 | static void ipc_child_cmd_hello( irc_t *irc, char **cmd ) |
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| 281 | { |
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[3af70b0] | 282 | if( !( irc->status & USTATUS_LOGGED_IN ) ) |
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[54879ab] | 283 | ipc_to_master_str( "HELLO\r\n" ); |
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| 284 | else |
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[3ddb7477] | 285 | ipc_to_master_str( "HELLO %s %s :%s\r\n", irc->user->host, irc->user->nick, irc->user->fullname ); |
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[54879ab] | 286 | } |
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| 287 | |
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[f545372] | 288 | static void ipc_child_cmd_takeover_yes( void *data ); |
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| 289 | static void ipc_child_cmd_takeover_no( void *data ); |
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| 290 | |
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[0b09da0] | 291 | static void ipc_child_cmd_takeover( irc_t *irc, char **cmd ) |
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| 292 | { |
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| 293 | if( strcmp( cmd[1], "NO" ) == 0 ) |
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| 294 | { |
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[f545372] | 295 | /* Master->New connection */ |
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[0b09da0] | 296 | /* No takeover, finish the login. */ |
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| 297 | } |
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| 298 | else if( strcmp( cmd[1], "INIT" ) == 0 ) |
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| 299 | { |
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[f545372] | 300 | /* Master->New connection */ |
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| 301 | /* Offer to take over the old session, unless for some reason |
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| 302 | we're already logging into IM connections. */ |
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| 303 | if( irc->login_source_id != -1 ) |
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| 304 | query_add( irc, NULL, |
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| 305 | "You're already connected to this server. " |
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| 306 | "Would you like to take over this session?", |
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| 307 | ipc_child_cmd_takeover_yes, |
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| 308 | ipc_child_cmd_takeover_no, irc ); |
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[0b09da0] | 309 | |
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[f545372] | 310 | /* This one's going to connect to accounts, avoid that. */ |
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| 311 | b_event_remove( irc->login_source_id ); |
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| 312 | irc->login_source_id = -1; |
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[0b09da0] | 313 | } |
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| 314 | else if( strcmp( cmd[1], "AUTH" ) == 0 ) |
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| 315 | { |
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[f545372] | 316 | /* Master->Old connection */ |
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[0b09da0] | 317 | if( irc->password && cmd[2] && cmd[3] && |
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| 318 | ipc_child_recv_fd != -1 && |
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| 319 | strcmp( irc->user->nick, cmd[2] ) == 0 && |
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| 320 | strcmp( irc->password, cmd[3] ) == 0 ) |
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| 321 | { |
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[f545372] | 322 | GSList *l; |
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| 323 | |
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[9595d2b] | 324 | /* TODO: Move this all into irc_switch_fd() or so and |
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| 325 | irc_sync() */ |
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[0b09da0] | 326 | b_event_remove( irc->r_watch_source_id ); |
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| 327 | closesocket( irc->fd ); |
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| 328 | irc->fd = ipc_child_recv_fd; |
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| 329 | irc->r_watch_source_id = b_input_add( irc->fd, B_EV_IO_READ, bitlbee_io_current_client_read, irc ); |
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| 330 | ipc_child_recv_fd = -1; |
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[f545372] | 331 | |
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[9595d2b] | 332 | irc_write( irc, ":%s!%s@%s MODE %s :%s", irc->user->nick, |
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| 333 | irc->user->user, irc->user->host, irc->user->nick, |
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| 334 | irc->umode ); |
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| 335 | |
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[f545372] | 336 | for( l = irc->channels; l; l = l->next ) |
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| 337 | { |
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| 338 | irc_channel_t *ic = l->data; |
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| 339 | if( ic->flags & IRC_CHANNEL_JOINED ) |
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| 340 | irc_send_join( ic, irc->user ); |
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| 341 | } |
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| 342 | irc_usermsg( irc, "You've successfully taken over your old session" ); |
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| 343 | |
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| 344 | ipc_to_master_str( "TAKEOVER DONE\r\n" ); |
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[0b09da0] | 345 | } |
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[f545372] | 346 | else |
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| 347 | { |
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| 348 | ipc_to_master_str( "TAKEOVER FAIL\r\n" ); |
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| 349 | } |
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| 350 | } |
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| 351 | else if( strcmp( cmd[1], "DONE" ) == 0 ) |
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| 352 | { |
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| 353 | /* Master->New connection (now taken over by old process) */ |
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| 354 | irc_free( irc ); |
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| 355 | } |
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| 356 | else if( strcmp( cmd[1], "FAIL" ) == 0 ) |
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| 357 | { |
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| 358 | /* Master->New connection */ |
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| 359 | irc_usermsg( irc, "Could not take over old session" ); |
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[0b09da0] | 360 | } |
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| 361 | } |
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| 362 | |
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[f545372] | 363 | static void ipc_child_cmd_takeover_yes( void *data ) |
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| 364 | { |
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| 365 | irc_t *irc = data; |
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| 366 | GSList *l; |
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| 367 | |
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| 368 | /* Master->New connection */ |
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| 369 | ipc_to_master_str( "TAKEOVER AUTH %s :%s\r\n", |
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| 370 | irc->user->nick, irc->password ); |
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| 371 | |
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| 372 | /* Drop credentials, we'll shut down soon and shouldn't overwrite |
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| 373 | any settings. */ |
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| 374 | irc_usermsg( irc, "Trying to take over existing session" ); |
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| 375 | |
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| 376 | /* TODO: irc_setpass() should do all of this. */ |
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| 377 | irc_setpass( irc, NULL ); |
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| 378 | irc->status &= ~USTATUS_IDENTIFIED; |
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| 379 | irc_umode_set( irc, "-R", 1 ); |
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| 380 | |
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| 381 | for( l = irc->channels; l; l = l->next ) |
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| 382 | irc_channel_del_user( l->data, irc->user, IRC_CDU_KICK, |
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| 383 | "Switching to old session" ); |
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[9595d2b] | 384 | |
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| 385 | irc_write( irc, ":%s!%s@%s MODE %s :-%s", irc->user->nick, |
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| 386 | irc->user->user, irc->user->host, irc->user->nick, |
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| 387 | irc->umode ); |
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[f545372] | 388 | } |
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| 389 | |
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| 390 | static void ipc_child_cmd_takeover_no( void *data ) |
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| 391 | { |
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| 392 | ipc_to_master_str( "TAKEOVER NO\r\n" ); |
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| 393 | cmd_identify_finish( data, 0, 0 ); |
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| 394 | } |
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| 395 | |
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[0431ea1] | 396 | static const command_t ipc_child_commands[] = { |
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[74c119d] | 397 | { "die", 0, ipc_child_cmd_die, 0 }, |
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| 398 | { "wallops", 1, ipc_child_cmd_wallops, 0 }, |
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[dfc8a46] | 399 | { "wall", 1, ipc_child_cmd_wall, 0 }, |
---|
[2face62] | 400 | { "opermsg", 1, ipc_child_cmd_opermsg, 0 }, |
---|
[48721c3] | 401 | { "rehash", 0, ipc_child_cmd_rehash, 0 }, |
---|
| 402 | { "kill", 2, ipc_child_cmd_kill, 0 }, |
---|
[54879ab] | 403 | { "hello", 0, ipc_child_cmd_hello, 0 }, |
---|
[0b09da0] | 404 | { "takeover", 1, ipc_child_cmd_takeover, 0 }, |
---|
[0431ea1] | 405 | { NULL } |
---|
| 406 | }; |
---|
| 407 | |
---|
[6c2404e] | 408 | gboolean ipc_child_identify( irc_t *irc ) |
---|
| 409 | { |
---|
| 410 | if( global.conf->runmode == RUNMODE_FORKDAEMON ) |
---|
| 411 | { |
---|
| 412 | if( !ipc_send_fd( global.listen_socket, irc->fd ) ) |
---|
| 413 | ipc_child_disable(); |
---|
| 414 | |
---|
| 415 | ipc_to_master_str( "IDENTIFY %s :%s\r\n", irc->user->nick, irc->password ); |
---|
| 416 | |
---|
| 417 | return TRUE; |
---|
| 418 | } |
---|
| 419 | else |
---|
| 420 | return FALSE; |
---|
| 421 | } |
---|
[74c119d] | 422 | |
---|
[0431ea1] | 423 | static void ipc_command_exec( void *data, char **cmd, const command_t *commands ) |
---|
| 424 | { |
---|
[f1d38f2] | 425 | int i, j; |
---|
[0431ea1] | 426 | |
---|
| 427 | if( !cmd[0] ) |
---|
| 428 | return; |
---|
| 429 | |
---|
| 430 | for( i = 0; commands[i].command; i ++ ) |
---|
| 431 | if( g_strcasecmp( commands[i].command, cmd[0] ) == 0 ) |
---|
| 432 | { |
---|
[f1d38f2] | 433 | /* There is no typo in this line: */ |
---|
| 434 | for( j = 1; cmd[j]; j ++ ); j --; |
---|
| 435 | |
---|
| 436 | if( j < commands[i].required_parameters ) |
---|
| 437 | break; |
---|
| 438 | |
---|
[f4a5940] | 439 | if( commands[i].flags & IPC_CMD_TO_CHILDREN ) |
---|
| 440 | ipc_to_children( cmd ); |
---|
| 441 | else |
---|
| 442 | commands[i].execute( data, cmd ); |
---|
| 443 | |
---|
[f1d38f2] | 444 | break; |
---|
[0431ea1] | 445 | } |
---|
| 446 | } |
---|
| 447 | |
---|
[da7b484] | 448 | /* Return just one line. Returns NULL if something broke, an empty string |
---|
| 449 | on temporary "errors" (EAGAIN and friends). */ |
---|
[6c2404e] | 450 | static char *ipc_readline( int fd, int *recv_fd ) |
---|
[0431ea1] | 451 | { |
---|
[6c2404e] | 452 | struct msghdr msg; |
---|
| 453 | struct iovec iov; |
---|
| 454 | char ccmsg[CMSG_SPACE(sizeof(recv_fd))]; |
---|
| 455 | struct cmsghdr *cmsg; |
---|
[da7b484] | 456 | char buf[513], *eol; |
---|
[0431ea1] | 457 | int size; |
---|
| 458 | |
---|
| 459 | /* Because this is internal communication, it should be pretty safe |
---|
| 460 | to just peek at the message, find its length (by searching for the |
---|
| 461 | end-of-line) and then just read that message. With internal |
---|
| 462 | sockets and limites message length, messages should always be |
---|
| 463 | complete. Saves us quite a lot of code and buffering. */ |
---|
[da7b484] | 464 | size = recv( fd, buf, sizeof( buf ) - 1, MSG_PEEK ); |
---|
[0431ea1] | 465 | if( size == 0 || ( size < 0 && !sockerr_again() ) ) |
---|
| 466 | return NULL; |
---|
[1ea13be] | 467 | else if( size < 0 ) /* && sockerr_again() */ |
---|
| 468 | return( g_strdup( "" ) ); |
---|
[0431ea1] | 469 | else |
---|
| 470 | buf[size] = 0; |
---|
| 471 | |
---|
[da7b484] | 472 | if( ( eol = strstr( buf, "\r\n" ) ) == NULL ) |
---|
[0431ea1] | 473 | return NULL; |
---|
| 474 | else |
---|
| 475 | size = eol - buf + 2; |
---|
| 476 | |
---|
[6c2404e] | 477 | iov.iov_base = buf; |
---|
| 478 | iov.iov_len = size; |
---|
| 479 | |
---|
| 480 | memset( &msg, 0, sizeof( msg ) ); |
---|
| 481 | msg.msg_iov = &iov; |
---|
| 482 | msg.msg_iovlen = 1; |
---|
| 483 | msg.msg_control = ccmsg; |
---|
| 484 | msg.msg_controllen = sizeof( ccmsg ); |
---|
| 485 | |
---|
| 486 | if( recvmsg( fd, &msg, 0 ) != size ) |
---|
[0431ea1] | 487 | return NULL; |
---|
[6c2404e] | 488 | |
---|
| 489 | if( recv_fd ) |
---|
| 490 | for( cmsg = CMSG_FIRSTHDR( &msg ); cmsg; cmsg = CMSG_NXTHDR( &msg, cmsg ) ) |
---|
| 491 | if( cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS ) |
---|
| 492 | { |
---|
| 493 | /* Getting more than one shouldn't happen but if it does, |
---|
| 494 | make sure we don't leave them around. */ |
---|
| 495 | if( *recv_fd != -1 ) |
---|
| 496 | close( *recv_fd ); |
---|
| 497 | |
---|
| 498 | *recv_fd = *(int*) CMSG_DATA( cmsg ); |
---|
[0b09da0] | 499 | fprintf( stderr, "pid %d received fd %d\n", (int) getpid(), *recv_fd ); |
---|
[6c2404e] | 500 | } |
---|
| 501 | |
---|
[0b09da0] | 502 | fprintf( stderr, "pid %d received: %s", (int) getpid(), buf ); |
---|
[6c2404e] | 503 | return g_strndup( buf, size - 2 ); |
---|
[0431ea1] | 504 | } |
---|
| 505 | |
---|
[ba9edaa] | 506 | gboolean ipc_master_read( gpointer data, gint source, b_input_condition cond ) |
---|
[0431ea1] | 507 | { |
---|
[6c2404e] | 508 | struct bitlbee_child *child = data; |
---|
[0431ea1] | 509 | char *buf, **cmd; |
---|
| 510 | |
---|
[6c2404e] | 511 | if( ( buf = ipc_readline( source, &child->to_fd ) ) ) |
---|
[0431ea1] | 512 | { |
---|
| 513 | cmd = irc_parse_line( buf ); |
---|
| 514 | if( cmd ) |
---|
[edc767b] | 515 | { |
---|
[6c2404e] | 516 | ipc_command_exec( child, cmd, ipc_master_commands ); |
---|
[edc767b] | 517 | g_free( cmd ); |
---|
| 518 | } |
---|
| 519 | g_free( buf ); |
---|
[0431ea1] | 520 | } |
---|
| 521 | else |
---|
| 522 | { |
---|
[171ef85] | 523 | ipc_master_free_fd( source ); |
---|
[0431ea1] | 524 | } |
---|
[ba9edaa] | 525 | |
---|
| 526 | return TRUE; |
---|
[0431ea1] | 527 | } |
---|
| 528 | |
---|
[ba9edaa] | 529 | gboolean ipc_child_read( gpointer data, gint source, b_input_condition cond ) |
---|
[0431ea1] | 530 | { |
---|
| 531 | char *buf, **cmd; |
---|
| 532 | |
---|
[0b09da0] | 533 | if( ( buf = ipc_readline( source, &ipc_child_recv_fd ) ) ) |
---|
[0431ea1] | 534 | { |
---|
| 535 | cmd = irc_parse_line( buf ); |
---|
| 536 | if( cmd ) |
---|
[edc767b] | 537 | { |
---|
[0431ea1] | 538 | ipc_command_exec( data, cmd, ipc_child_commands ); |
---|
[edc767b] | 539 | g_free( cmd ); |
---|
| 540 | } |
---|
| 541 | g_free( buf ); |
---|
[0431ea1] | 542 | } |
---|
| 543 | else |
---|
| 544 | { |
---|
[171ef85] | 545 | ipc_child_disable(); |
---|
[0431ea1] | 546 | } |
---|
[ba9edaa] | 547 | |
---|
| 548 | return TRUE; |
---|
[0431ea1] | 549 | } |
---|
| 550 | |
---|
| 551 | void ipc_to_master( char **cmd ) |
---|
| 552 | { |
---|
| 553 | if( global.conf->runmode == RUNMODE_FORKDAEMON ) |
---|
| 554 | { |
---|
[74c119d] | 555 | char *s = irc_build_line( cmd ); |
---|
[2face62] | 556 | ipc_to_master_str( "%s", s ); |
---|
[f4a5940] | 557 | g_free( s ); |
---|
| 558 | } |
---|
| 559 | else if( global.conf->runmode == RUNMODE_DAEMON ) |
---|
| 560 | { |
---|
| 561 | ipc_command_exec( NULL, cmd, ipc_master_commands ); |
---|
| 562 | } |
---|
| 563 | } |
---|
| 564 | |
---|
[2face62] | 565 | void ipc_to_master_str( char *format, ... ) |
---|
[f4a5940] | 566 | { |
---|
[2face62] | 567 | char *msg_buf; |
---|
| 568 | va_list params; |
---|
| 569 | |
---|
| 570 | va_start( params, format ); |
---|
| 571 | msg_buf = g_strdup_vprintf( format, params ); |
---|
| 572 | va_end( params ); |
---|
| 573 | |
---|
| 574 | if( strlen( msg_buf ) > 512 ) |
---|
| 575 | { |
---|
| 576 | /* Don't send it, it's too long... */ |
---|
| 577 | } |
---|
| 578 | else if( global.conf->runmode == RUNMODE_FORKDAEMON ) |
---|
[f4a5940] | 579 | { |
---|
[171ef85] | 580 | if( global.listen_socket >= 0 ) |
---|
| 581 | if( write( global.listen_socket, msg_buf, strlen( msg_buf ) ) <= 0 ) |
---|
| 582 | ipc_child_disable(); |
---|
[f4a5940] | 583 | } |
---|
| 584 | else if( global.conf->runmode == RUNMODE_DAEMON ) |
---|
| 585 | { |
---|
[bd9b00f] | 586 | char **cmd, *s; |
---|
| 587 | |
---|
| 588 | if( ( s = strchr( msg_buf, '\r' ) ) ) |
---|
| 589 | *s = 0; |
---|
[f4a5940] | 590 | |
---|
[2face62] | 591 | cmd = irc_parse_line( msg_buf ); |
---|
[f4a5940] | 592 | ipc_command_exec( NULL, cmd, ipc_master_commands ); |
---|
| 593 | g_free( cmd ); |
---|
[74c119d] | 594 | } |
---|
[2face62] | 595 | |
---|
| 596 | g_free( msg_buf ); |
---|
[74c119d] | 597 | } |
---|
| 598 | |
---|
| 599 | void ipc_to_children( char **cmd ) |
---|
| 600 | { |
---|
| 601 | if( global.conf->runmode == RUNMODE_FORKDAEMON ) |
---|
| 602 | { |
---|
| 603 | char *msg_buf = irc_build_line( cmd ); |
---|
[2face62] | 604 | ipc_to_children_str( "%s", msg_buf ); |
---|
[74c119d] | 605 | g_free( msg_buf ); |
---|
| 606 | } |
---|
[f4a5940] | 607 | else if( global.conf->runmode == RUNMODE_DAEMON ) |
---|
| 608 | { |
---|
| 609 | GSList *l; |
---|
| 610 | |
---|
| 611 | for( l = irc_connection_list; l; l = l->next ) |
---|
| 612 | ipc_command_exec( l->data, cmd, ipc_child_commands ); |
---|
| 613 | } |
---|
[74c119d] | 614 | } |
---|
| 615 | |
---|
[2face62] | 616 | void ipc_to_children_str( char *format, ... ) |
---|
[74c119d] | 617 | { |
---|
[2face62] | 618 | char *msg_buf; |
---|
| 619 | va_list params; |
---|
| 620 | |
---|
| 621 | va_start( params, format ); |
---|
| 622 | msg_buf = g_strdup_vprintf( format, params ); |
---|
| 623 | va_end( params ); |
---|
| 624 | |
---|
| 625 | if( strlen( msg_buf ) > 512 ) |
---|
| 626 | { |
---|
| 627 | /* Don't send it, it's too long... */ |
---|
| 628 | } |
---|
| 629 | else if( global.conf->runmode == RUNMODE_FORKDAEMON ) |
---|
[74c119d] | 630 | { |
---|
| 631 | int msg_len = strlen( msg_buf ); |
---|
[171ef85] | 632 | GSList *l, *next; |
---|
[0431ea1] | 633 | |
---|
[171ef85] | 634 | for( l = child_list; l; l = next ) |
---|
[0431ea1] | 635 | { |
---|
[74c119d] | 636 | struct bitlbee_child *c = l->data; |
---|
[171ef85] | 637 | |
---|
| 638 | next = l->next; |
---|
| 639 | if( write( c->ipc_fd, msg_buf, msg_len ) <= 0 ) |
---|
| 640 | { |
---|
| 641 | ipc_master_free_one( c ); |
---|
| 642 | child_list = g_slist_remove( child_list, c ); |
---|
| 643 | } |
---|
[0431ea1] | 644 | } |
---|
| 645 | } |
---|
[f4a5940] | 646 | else if( global.conf->runmode == RUNMODE_DAEMON ) |
---|
| 647 | { |
---|
[bd9b00f] | 648 | char **cmd, *s; |
---|
| 649 | |
---|
| 650 | if( ( s = strchr( msg_buf, '\r' ) ) ) |
---|
| 651 | *s = 0; |
---|
[f4a5940] | 652 | |
---|
[2face62] | 653 | cmd = irc_parse_line( msg_buf ); |
---|
[f4a5940] | 654 | ipc_to_children( cmd ); |
---|
| 655 | g_free( cmd ); |
---|
| 656 | } |
---|
[2face62] | 657 | |
---|
| 658 | g_free( msg_buf ); |
---|
| 659 | } |
---|
| 660 | |
---|
[6c2404e] | 661 | static gboolean ipc_send_fd( int fd, int send_fd ) |
---|
| 662 | { |
---|
| 663 | struct msghdr msg; |
---|
| 664 | struct iovec iov; |
---|
| 665 | char ccmsg[CMSG_SPACE(sizeof(fd))]; |
---|
| 666 | struct cmsghdr *cmsg; |
---|
| 667 | |
---|
| 668 | memset( &msg, 0, sizeof( msg ) ); |
---|
| 669 | iov.iov_base = "0x90\r\n"; |
---|
| 670 | iov.iov_len = 6; |
---|
| 671 | msg.msg_iov = &iov; |
---|
| 672 | msg.msg_iovlen = 1; |
---|
| 673 | |
---|
| 674 | msg.msg_control = ccmsg; |
---|
| 675 | msg.msg_controllen = sizeof( ccmsg ); |
---|
| 676 | cmsg = CMSG_FIRSTHDR( &msg ); |
---|
| 677 | cmsg->cmsg_level = SOL_SOCKET; |
---|
| 678 | cmsg->cmsg_type = SCM_RIGHTS; |
---|
| 679 | cmsg->cmsg_len = CMSG_LEN( sizeof( send_fd ) ); |
---|
| 680 | *(int*)CMSG_DATA( cmsg ) = send_fd; |
---|
| 681 | msg.msg_controllen = cmsg->cmsg_len; |
---|
| 682 | |
---|
| 683 | return sendmsg( fd, &msg, 0 ) == 6; |
---|
| 684 | } |
---|
| 685 | |
---|
[2face62] | 686 | void ipc_master_free_one( struct bitlbee_child *c ) |
---|
| 687 | { |
---|
[ba9edaa] | 688 | b_event_remove( c->ipc_inpa ); |
---|
[2face62] | 689 | closesocket( c->ipc_fd ); |
---|
| 690 | |
---|
[6c2404e] | 691 | if( c->to_fd != -1 ) |
---|
| 692 | close( c->to_fd ); |
---|
| 693 | |
---|
[2face62] | 694 | g_free( c->host ); |
---|
| 695 | g_free( c->nick ); |
---|
| 696 | g_free( c->realname ); |
---|
[6c2404e] | 697 | g_free( c->password ); |
---|
[2face62] | 698 | g_free( c ); |
---|
| 699 | } |
---|
| 700 | |
---|
[171ef85] | 701 | void ipc_master_free_fd( int fd ) |
---|
| 702 | { |
---|
| 703 | GSList *l; |
---|
| 704 | struct bitlbee_child *c; |
---|
| 705 | |
---|
| 706 | for( l = child_list; l; l = l->next ) |
---|
| 707 | { |
---|
| 708 | c = l->data; |
---|
| 709 | if( c->ipc_fd == fd ) |
---|
| 710 | { |
---|
| 711 | ipc_master_free_one( c ); |
---|
| 712 | child_list = g_slist_remove( child_list, c ); |
---|
| 713 | break; |
---|
| 714 | } |
---|
| 715 | } |
---|
| 716 | } |
---|
| 717 | |
---|
[2face62] | 718 | void ipc_master_free_all() |
---|
| 719 | { |
---|
| 720 | GSList *l; |
---|
| 721 | |
---|
| 722 | for( l = child_list; l; l = l->next ) |
---|
| 723 | ipc_master_free_one( l->data ); |
---|
| 724 | |
---|
| 725 | g_slist_free( child_list ); |
---|
| 726 | child_list = NULL; |
---|
[0431ea1] | 727 | } |
---|
[54879ab] | 728 | |
---|
[171ef85] | 729 | void ipc_child_disable() |
---|
| 730 | { |
---|
| 731 | b_event_remove( global.listen_watch_source_id ); |
---|
| 732 | close( global.listen_socket ); |
---|
| 733 | |
---|
| 734 | global.listen_socket = -1; |
---|
| 735 | } |
---|
| 736 | |
---|
[80c1e4d] | 737 | #ifndef _WIN32 |
---|
[54879ab] | 738 | char *ipc_master_save_state() |
---|
| 739 | { |
---|
| 740 | char *fn = g_strdup( "/tmp/bee-restart.XXXXXX" ); |
---|
| 741 | int fd = mkstemp( fn ); |
---|
| 742 | GSList *l; |
---|
| 743 | FILE *fp; |
---|
| 744 | int i; |
---|
| 745 | |
---|
| 746 | if( fd == -1 ) |
---|
| 747 | { |
---|
| 748 | log_message( LOGLVL_ERROR, "Could not create temporary file: %s", strerror( errno ) ); |
---|
| 749 | g_free( fn ); |
---|
| 750 | return NULL; |
---|
| 751 | } |
---|
| 752 | |
---|
| 753 | /* This is more convenient now. */ |
---|
| 754 | fp = fdopen( fd, "w" ); |
---|
| 755 | |
---|
| 756 | for( l = child_list, i = 0; l; l = l->next ) |
---|
| 757 | i ++; |
---|
| 758 | |
---|
| 759 | /* Number of client processes. */ |
---|
| 760 | fprintf( fp, "%d\n", i ); |
---|
| 761 | |
---|
| 762 | for( l = child_list; l; l = l->next ) |
---|
[52744f8] | 763 | fprintf( fp, "%d %d\n", (int) ((struct bitlbee_child*)l->data)->pid, |
---|
[54879ab] | 764 | ((struct bitlbee_child*)l->data)->ipc_fd ); |
---|
| 765 | |
---|
| 766 | if( fclose( fp ) == 0 ) |
---|
| 767 | { |
---|
| 768 | return fn; |
---|
| 769 | } |
---|
| 770 | else |
---|
| 771 | { |
---|
| 772 | unlink( fn ); |
---|
| 773 | g_free( fn ); |
---|
| 774 | return NULL; |
---|
| 775 | } |
---|
| 776 | } |
---|
| 777 | |
---|
[6dff9d4] | 778 | |
---|
[ba9edaa] | 779 | static gboolean new_ipc_client( gpointer data, gint serversock, b_input_condition cond ) |
---|
[6dff9d4] | 780 | { |
---|
| 781 | struct bitlbee_child *child = g_new0( struct bitlbee_child, 1 ); |
---|
[a0d04d6] | 782 | |
---|
[6c2404e] | 783 | child->to_fd = -1; |
---|
[a0d04d6] | 784 | child->ipc_fd = accept( serversock, NULL, 0 ); |
---|
| 785 | if( child->ipc_fd == -1 ) |
---|
| 786 | { |
---|
[8a56e52] | 787 | log_message( LOGLVL_WARNING, "Unable to accept connection on UNIX domain socket: %s", strerror(errno) ); |
---|
| 788 | return TRUE; |
---|
| 789 | } |
---|
[6dff9d4] | 790 | |
---|
[e046390] | 791 | child->ipc_inpa = b_input_add( child->ipc_fd, B_EV_IO_READ, ipc_master_read, child ); |
---|
[a0d04d6] | 792 | |
---|
[6c2404e] | 793 | child_list = g_slist_prepend( child_list, child ); |
---|
[ba9edaa] | 794 | |
---|
[6dff9d4] | 795 | return TRUE; |
---|
| 796 | } |
---|
| 797 | |
---|
| 798 | int ipc_master_listen_socket() |
---|
| 799 | { |
---|
| 800 | struct sockaddr_un un_addr; |
---|
| 801 | int serversock; |
---|
| 802 | |
---|
| 803 | /* Clean up old socket files that were hanging around.. */ |
---|
[8a56e52] | 804 | if (unlink(IPCSOCKET) == -1 && errno != ENOENT) { |
---|
| 805 | log_message( LOGLVL_ERROR, "Could not remove old IPC socket at %s: %s", IPCSOCKET, strerror(errno) ); |
---|
| 806 | return 0; |
---|
| 807 | } |
---|
[6dff9d4] | 808 | |
---|
| 809 | un_addr.sun_family = AF_UNIX; |
---|
| 810 | strcpy(un_addr.sun_path, IPCSOCKET); |
---|
| 811 | |
---|
| 812 | serversock = socket(AF_UNIX, SOCK_STREAM, PF_UNIX); |
---|
| 813 | |
---|
[8a56e52] | 814 | if (serversock == -1) { |
---|
| 815 | log_message( LOGLVL_WARNING, "Unable to create UNIX socket: %s", strerror(errno) ); |
---|
| 816 | return 0; |
---|
| 817 | } |
---|
[6dff9d4] | 818 | |
---|
[5d6c178] | 819 | if (bind(serversock, (struct sockaddr *)&un_addr, sizeof(un_addr)) == -1) { |
---|
[8a56e52] | 820 | log_message( LOGLVL_WARNING, "Unable to bind UNIX socket to %s: %s", IPCSOCKET, strerror(errno) ); |
---|
| 821 | return 0; |
---|
| 822 | } |
---|
| 823 | |
---|
| 824 | if (listen(serversock, 5) == -1) { |
---|
| 825 | log_message( LOGLVL_WARNING, "Unable to listen on UNIX socket: %s", strerror(errno) ); |
---|
| 826 | return 0; |
---|
| 827 | } |
---|
[6dff9d4] | 828 | |
---|
[e046390] | 829 | b_input_add( serversock, B_EV_IO_READ, new_ipc_client, NULL ); |
---|
[8a56e52] | 830 | |
---|
[6dff9d4] | 831 | return 1; |
---|
| 832 | } |
---|
| 833 | #else |
---|
[1cda4f3] | 834 | int ipc_master_listen_socket() |
---|
| 835 | { |
---|
[6dff9d4] | 836 | /* FIXME: Open named pipe \\.\BITLBEE */ |
---|
[1cda4f3] | 837 | return 0; |
---|
| 838 | } |
---|
[6dff9d4] | 839 | #endif |
---|
| 840 | |
---|
[cd63d58] | 841 | int ipc_master_load_state( char *statefile ) |
---|
[54879ab] | 842 | { |
---|
| 843 | struct bitlbee_child *child; |
---|
| 844 | FILE *fp; |
---|
| 845 | int i, n; |
---|
| 846 | |
---|
| 847 | if( statefile == NULL ) |
---|
| 848 | return 0; |
---|
[cd63d58] | 849 | |
---|
[54879ab] | 850 | fp = fopen( statefile, "r" ); |
---|
| 851 | unlink( statefile ); /* Why do it later? :-) */ |
---|
| 852 | if( fp == NULL ) |
---|
| 853 | return 0; |
---|
| 854 | |
---|
| 855 | if( fscanf( fp, "%d", &n ) != 1 ) |
---|
| 856 | { |
---|
| 857 | log_message( LOGLVL_WARNING, "Could not import state information for child processes." ); |
---|
| 858 | fclose( fp ); |
---|
| 859 | return 0; |
---|
| 860 | } |
---|
| 861 | |
---|
| 862 | log_message( LOGLVL_INFO, "Importing information for %d child processes.", n ); |
---|
| 863 | for( i = 0; i < n; i ++ ) |
---|
| 864 | { |
---|
| 865 | child = g_new0( struct bitlbee_child, 1 ); |
---|
| 866 | |
---|
[52744f8] | 867 | if( fscanf( fp, "%d %d", (int *) &child->pid, &child->ipc_fd ) != 2 ) |
---|
[54879ab] | 868 | { |
---|
| 869 | log_message( LOGLVL_WARNING, "Unexpected end of file: Only processed %d clients.", i ); |
---|
| 870 | g_free( child ); |
---|
| 871 | fclose( fp ); |
---|
| 872 | return 0; |
---|
| 873 | } |
---|
[e046390] | 874 | child->ipc_inpa = b_input_add( child->ipc_fd, B_EV_IO_READ, ipc_master_read, child ); |
---|
[6c2404e] | 875 | child->to_fd = -1; |
---|
[54879ab] | 876 | |
---|
[6c2404e] | 877 | child_list = g_slist_prepend( child_list, child ); |
---|
[54879ab] | 878 | } |
---|
| 879 | |
---|
| 880 | ipc_to_children_str( "HELLO\r\n" ); |
---|
| 881 | ipc_to_children_str( "OPERMSG :New BitlBee master process started (version " BITLBEE_VERSION ")\r\n" ); |
---|
| 882 | |
---|
[dd89a55] | 883 | fclose( fp ); |
---|
[54879ab] | 884 | return 1; |
---|
| 885 | } |
---|