[0431ea1] | 1 | /********************************************************************\ |
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| 2 | * BitlBee -- An IRC to other IM-networks gateway * |
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| 3 | * * |
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| 4 | * Copyright 2002-2004 Wilmer van der Gaast and others * |
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| 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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| 30 | |
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| 31 | GSList *child_list = NULL; |
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| 32 | |
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[74c119d] | 33 | |
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[0431ea1] | 34 | static int ipc_master_cmd_die( irc_t *data, char **cmd ) |
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| 35 | { |
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[74c119d] | 36 | if( global.conf->runmode == RUNMODE_FORKDAEMON ) |
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| 37 | ipc_to_children_str( "DIE\r\n" ); |
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| 38 | |
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[13caf0a] | 39 | bitlbee_shutdown( NULL ); |
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[74c119d] | 40 | |
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| 41 | return 1; |
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[0431ea1] | 42 | } |
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| 43 | |
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[f4a5940] | 44 | static int ipc_master_cmd_rehash( irc_t *data, char **cmd ) |
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[0431ea1] | 45 | { |
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[f4a5940] | 46 | runmode_t oldmode; |
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| 47 | |
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| 48 | oldmode = global.conf->runmode; |
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| 49 | |
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| 50 | g_free( global.conf ); |
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| 51 | global.conf = conf_load( 0, NULL ); |
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| 52 | |
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| 53 | if( global.conf->runmode != oldmode ) |
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| 54 | { |
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| 55 | log_message( LOGLVL_WARNING, "Can't change RunMode setting at runtime, restoring original setting" ); |
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| 56 | global.conf->runmode = oldmode; |
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| 57 | } |
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| 58 | |
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| 59 | if( global.conf->runmode == RUNMODE_FORKDAEMON ) |
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| 60 | ipc_to_children( cmd ); |
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[0431ea1] | 61 | |
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| 62 | return 1; |
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| 63 | } |
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| 64 | |
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| 65 | static const command_t ipc_master_commands[] = { |
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| 66 | { "die", 0, ipc_master_cmd_die, 0 }, |
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[f4a5940] | 67 | { "wallops", 1, NULL, IPC_CMD_TO_CHILDREN }, |
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| 68 | { "lilo", 1, NULL, IPC_CMD_TO_CHILDREN }, |
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| 69 | { "rehash", 0, ipc_master_cmd_rehash, 0 }, |
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[0431ea1] | 70 | { NULL } |
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| 71 | }; |
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| 72 | |
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[74c119d] | 73 | |
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| 74 | static int ipc_child_cmd_die( irc_t *data, char **cmd ) |
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| 75 | { |
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| 76 | bitlbee_shutdown( NULL ); |
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| 77 | |
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| 78 | return 1; |
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| 79 | } |
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| 80 | |
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[e0ca412] | 81 | static int ipc_child_cmd_wallops( irc_t *data, char **cmd ) |
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[0431ea1] | 82 | { |
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| 83 | irc_t *irc = data; |
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| 84 | |
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[daa9e02] | 85 | if( irc->status < USTATUS_LOGGED_IN ) |
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| 86 | return 1; |
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| 87 | |
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[0431ea1] | 88 | if( strchr( irc->umode, 'w' ) ) |
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[e0ca412] | 89 | irc_write( irc, ":%s WALLOPS :%s", irc->myhost, cmd[1] ); |
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| 90 | |
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| 91 | return 1; |
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| 92 | } |
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| 93 | |
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| 94 | static int ipc_child_cmd_lilo( irc_t *data, char **cmd ) |
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| 95 | { |
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| 96 | irc_t *irc = data; |
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| 97 | |
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[daa9e02] | 98 | if( irc->status < USTATUS_LOGGED_IN ) |
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| 99 | return 1; |
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| 100 | |
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[74c119d] | 101 | if( strchr( irc->umode, 's' ) ) |
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| 102 | irc_write( irc, ":%s NOTICE %s :%s", irc->myhost, irc->nick, cmd[1] ); |
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[0431ea1] | 103 | |
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| 104 | return 1; |
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| 105 | } |
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| 106 | |
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[f4a5940] | 107 | static int ipc_child_cmd_rehash( irc_t *data, char **cmd ) |
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| 108 | { |
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| 109 | runmode_t oldmode; |
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| 110 | |
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| 111 | oldmode = global.conf->runmode; |
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| 112 | |
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| 113 | g_free( global.conf ); |
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| 114 | global.conf = conf_load( 0, NULL ); |
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| 115 | |
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| 116 | global.conf->runmode = oldmode; |
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| 117 | |
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| 118 | return 1; |
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| 119 | } |
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| 120 | |
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[0431ea1] | 121 | static const command_t ipc_child_commands[] = { |
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[74c119d] | 122 | { "die", 0, ipc_child_cmd_die, 0 }, |
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| 123 | { "wallops", 1, ipc_child_cmd_wallops, 0 }, |
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| 124 | { "lilo", 1, ipc_child_cmd_lilo, 0 }, |
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[f4a5940] | 125 | { "rehash", 0, ipc_child_cmd_rehash, 0 }, |
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[0431ea1] | 126 | { NULL } |
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| 127 | }; |
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| 128 | |
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[74c119d] | 129 | |
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[0431ea1] | 130 | static void ipc_command_exec( void *data, char **cmd, const command_t *commands ) |
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| 131 | { |
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| 132 | int i; |
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| 133 | |
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| 134 | if( !cmd[0] ) |
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| 135 | return; |
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| 136 | |
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| 137 | for( i = 0; commands[i].command; i ++ ) |
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| 138 | if( g_strcasecmp( commands[i].command, cmd[0] ) == 0 ) |
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| 139 | { |
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[f4a5940] | 140 | if( commands[i].flags & IPC_CMD_TO_CHILDREN ) |
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| 141 | ipc_to_children( cmd ); |
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| 142 | else |
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| 143 | commands[i].execute( data, cmd ); |
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| 144 | |
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[0431ea1] | 145 | return; |
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| 146 | } |
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| 147 | } |
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| 148 | |
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| 149 | static char *ipc_readline( int fd ) |
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| 150 | { |
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| 151 | char *buf, *eol; |
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| 152 | int size; |
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| 153 | |
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| 154 | buf = g_new0( char, 513 ); |
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| 155 | |
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| 156 | /* Because this is internal communication, it should be pretty safe |
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| 157 | to just peek at the message, find its length (by searching for the |
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| 158 | end-of-line) and then just read that message. With internal |
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| 159 | sockets and limites message length, messages should always be |
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| 160 | complete. Saves us quite a lot of code and buffering. */ |
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| 161 | size = recv( fd, buf, 512, MSG_PEEK ); |
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| 162 | if( size == 0 || ( size < 0 && !sockerr_again() ) ) |
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| 163 | return NULL; |
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| 164 | else |
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| 165 | buf[size] = 0; |
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| 166 | |
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| 167 | eol = strstr( buf, "\r\n" ); |
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| 168 | if( eol == NULL ) |
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| 169 | return NULL; |
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| 170 | else |
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| 171 | size = eol - buf + 2; |
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| 172 | |
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| 173 | g_free( buf ); |
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| 174 | buf = g_new0( char, size + 1 ); |
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| 175 | |
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| 176 | if( recv( fd, buf, size, 0 ) != size ) |
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| 177 | return NULL; |
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| 178 | else |
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| 179 | buf[size-2] = 0; |
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| 180 | |
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| 181 | return buf; |
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| 182 | } |
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| 183 | |
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| 184 | void ipc_master_read( gpointer data, gint source, GaimInputCondition cond ) |
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| 185 | { |
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| 186 | char *buf, **cmd; |
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| 187 | |
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| 188 | if( ( buf = ipc_readline( source ) ) ) |
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| 189 | { |
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| 190 | cmd = irc_parse_line( buf ); |
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| 191 | if( cmd ) |
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| 192 | ipc_command_exec( data, cmd, ipc_master_commands ); |
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| 193 | } |
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| 194 | else |
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| 195 | { |
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| 196 | GSList *l; |
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| 197 | struct bitlbee_child *c; |
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| 198 | |
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| 199 | for( l = child_list; l; l = l->next ) |
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| 200 | { |
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| 201 | c = l->data; |
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| 202 | if( c->ipc_fd == source ) |
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| 203 | { |
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| 204 | close( c->ipc_fd ); |
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| 205 | gaim_input_remove( c->ipc_inpa ); |
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| 206 | g_free( c ); |
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| 207 | |
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| 208 | child_list = g_slist_remove( child_list, l ); |
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| 209 | |
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| 210 | break; |
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| 211 | } |
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| 212 | } |
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| 213 | } |
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| 214 | } |
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| 215 | |
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| 216 | void ipc_child_read( gpointer data, gint source, GaimInputCondition cond ) |
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| 217 | { |
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| 218 | char *buf, **cmd; |
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| 219 | |
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| 220 | if( ( buf = ipc_readline( source ) ) ) |
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| 221 | { |
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| 222 | cmd = irc_parse_line( buf ); |
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| 223 | if( cmd ) |
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| 224 | ipc_command_exec( data, cmd, ipc_child_commands ); |
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| 225 | } |
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| 226 | else |
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| 227 | { |
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| 228 | gaim_input_remove( global.listen_watch_source_id ); |
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| 229 | close( global.listen_socket ); |
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| 230 | |
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| 231 | global.listen_socket = -1; |
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| 232 | } |
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| 233 | } |
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| 234 | |
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| 235 | void ipc_to_master( char **cmd ) |
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| 236 | { |
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| 237 | if( global.conf->runmode == RUNMODE_FORKDAEMON ) |
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| 238 | { |
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[74c119d] | 239 | char *s = irc_build_line( cmd ); |
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[f4a5940] | 240 | ipc_to_master_str( s ); |
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| 241 | g_free( s ); |
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| 242 | } |
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| 243 | else if( global.conf->runmode == RUNMODE_DAEMON ) |
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| 244 | { |
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| 245 | ipc_command_exec( NULL, cmd, ipc_master_commands ); |
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| 246 | } |
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| 247 | } |
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| 248 | |
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| 249 | void ipc_to_master_str( char *msg_buf ) |
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| 250 | { |
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| 251 | if( global.conf->runmode == RUNMODE_FORKDAEMON ) |
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| 252 | { |
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| 253 | write( global.listen_socket, msg_buf, strlen( msg_buf ) ); |
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| 254 | } |
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| 255 | else if( global.conf->runmode == RUNMODE_DAEMON ) |
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| 256 | { |
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| 257 | char *s, **cmd; |
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| 258 | |
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| 259 | /* irc_parse_line() wants a read-write string, so get it one: */ |
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| 260 | s = g_strdup( msg_buf ); |
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| 261 | cmd = irc_parse_line( s ); |
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| 262 | |
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| 263 | ipc_command_exec( NULL, cmd, ipc_master_commands ); |
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| 264 | |
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| 265 | g_free( cmd ); |
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[74c119d] | 266 | g_free( s ); |
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| 267 | } |
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| 268 | } |
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| 269 | |
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| 270 | void ipc_to_children( char **cmd ) |
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| 271 | { |
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| 272 | if( global.conf->runmode == RUNMODE_FORKDAEMON ) |
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| 273 | { |
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| 274 | char *msg_buf = irc_build_line( cmd ); |
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| 275 | ipc_to_children_str( msg_buf ); |
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| 276 | g_free( msg_buf ); |
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| 277 | } |
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[f4a5940] | 278 | else if( global.conf->runmode == RUNMODE_DAEMON ) |
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| 279 | { |
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| 280 | GSList *l; |
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| 281 | |
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| 282 | for( l = irc_connection_list; l; l = l->next ) |
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| 283 | ipc_command_exec( l->data, cmd, ipc_child_commands ); |
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| 284 | } |
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[74c119d] | 285 | } |
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| 286 | |
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| 287 | void ipc_to_children_str( char *msg_buf ) |
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| 288 | { |
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| 289 | if( global.conf->runmode == RUNMODE_FORKDAEMON ) |
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| 290 | { |
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| 291 | int msg_len = strlen( msg_buf ); |
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| 292 | GSList *l; |
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[0431ea1] | 293 | |
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[74c119d] | 294 | for( l = child_list; l; l = l->next ) |
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[0431ea1] | 295 | { |
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[74c119d] | 296 | struct bitlbee_child *c = l->data; |
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| 297 | write( c->ipc_fd, msg_buf, msg_len ); |
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[0431ea1] | 298 | } |
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| 299 | } |
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[f4a5940] | 300 | else if( global.conf->runmode == RUNMODE_DAEMON ) |
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| 301 | { |
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| 302 | char *s, **cmd; |
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| 303 | |
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| 304 | /* irc_parse_line() wants a read-write string, so get it one: */ |
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| 305 | s = g_strdup( msg_buf ); |
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| 306 | cmd = irc_parse_line( s ); |
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| 307 | |
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| 308 | ipc_to_children( cmd ); |
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| 309 | |
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| 310 | g_free( cmd ); |
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| 311 | g_free( s ); |
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| 312 | } |
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[0431ea1] | 313 | } |
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