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 2002-2012 Wilmer van der Gaast and others * |
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5 | \********************************************************************/ |
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6 | |
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7 | /* The IRC-based UI (for now the only one) */ |
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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., 51 Franklin St., |
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23 | Fifth Floor, Boston, MA 02110-1301 USA |
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24 | */ |
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25 | |
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26 | #include "bitlbee.h" |
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27 | #include "canohost.h" |
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28 | #include "ipc.h" |
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29 | #include "dcc.h" |
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30 | #include "lib/ssl_client.h" |
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31 | |
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32 | GSList *irc_connection_list; |
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33 | GSList *irc_plugins; |
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34 | |
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35 | static gboolean irc_userping(gpointer _irc, gint fd, b_input_condition cond); |
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36 | static char *set_eval_charset(set_t *set, char *value); |
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37 | static char *set_eval_password(set_t *set, char *value); |
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38 | static char *set_eval_bw_compat(set_t *set, char *value); |
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39 | static char *set_eval_utf8_nicks(set_t *set, char *value); |
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40 | |
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41 | irc_t *irc_new(int fd) |
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42 | { |
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43 | irc_t *irc; |
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44 | irc_user_t *iu; |
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45 | GSList *l; |
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46 | set_t *s; |
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47 | bee_t *b; |
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48 | |
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49 | irc = g_new0(irc_t, 1); |
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50 | |
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51 | irc->fd = fd; |
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52 | sock_make_nonblocking(irc->fd); |
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53 | |
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54 | irc->r_watch_source_id = b_input_add(irc->fd, B_EV_IO_READ, bitlbee_io_current_client_read, irc); |
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55 | |
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56 | irc->status = USTATUS_OFFLINE; |
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57 | irc->last_pong = gettime(); |
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58 | |
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59 | irc->nick_user_hash = g_hash_table_new(g_str_hash, g_str_equal); |
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60 | irc->watches = g_hash_table_new(g_str_hash, g_str_equal); |
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61 | |
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62 | irc->iconv = (GIConv) - 1; |
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63 | irc->oconv = (GIConv) - 1; |
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64 | |
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65 | irc->sendbuffer = g_string_sized_new(IRC_MAX_LINE * 2); |
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66 | |
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67 | if (global.conf->ping_interval > 0 && global.conf->ping_timeout > 0) { |
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68 | irc->ping_source_id = b_timeout_add(global.conf->ping_interval * 1000, irc_userping, irc); |
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69 | } |
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70 | |
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71 | irc_connection_list = g_slist_append(irc_connection_list, irc); |
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72 | |
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73 | b = irc->b = bee_new(); |
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74 | b->ui_data = irc; |
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75 | b->ui = &irc_ui_funcs; |
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76 | |
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77 | s = set_add(&b->set, "allow_takeover", "true", set_eval_bool, irc); |
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78 | s = set_add(&b->set, "away_devoice", "true", set_eval_bw_compat, irc); |
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79 | s->flags |= SET_HIDDEN; |
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80 | s = set_add(&b->set, "away_reply_timeout", "3600", set_eval_int, irc); |
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81 | s = set_add(&b->set, "charset", "utf-8", set_eval_charset, irc); |
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82 | s = set_add(&b->set, "default_target", "root", NULL, irc); |
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83 | s = set_add(&b->set, "display_namechanges", "false", set_eval_bool, irc); |
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84 | s = set_add(&b->set, "display_timestamps", "true", set_eval_bool, irc); |
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85 | s = set_add(&b->set, "handle_unknown", "add_channel", NULL, irc); |
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86 | s = set_add(&b->set, "last_version", "0", NULL, irc); |
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87 | s->flags |= SET_HIDDEN; |
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88 | s = set_add(&b->set, "nick_format", "%-@nick", NULL, irc); |
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89 | s = set_add(&b->set, "nick_lowercase", "false", set_eval_bool, irc); |
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90 | s = set_add(&b->set, "nick_underscores", "false", set_eval_bool, irc); |
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91 | s = set_add(&b->set, "offline_user_quits", "true", set_eval_bool, irc); |
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92 | s = set_add(&b->set, "ops", "both", set_eval_irc_channel_ops, irc); |
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93 | s = set_add(&b->set, "paste_buffer", "false", set_eval_bool, irc); |
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94 | s->old_key = g_strdup("buddy_sendbuffer"); |
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95 | s = set_add(&b->set, "paste_buffer_delay", "200", set_eval_int, irc); |
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96 | s->old_key = g_strdup("buddy_sendbuffer_delay"); |
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97 | s = set_add(&b->set, "password", NULL, set_eval_password, irc); |
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98 | s->flags |= SET_NULL_OK | SET_PASSWORD; |
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99 | s = set_add(&b->set, "private", "true", set_eval_bool, irc); |
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100 | s = set_add(&b->set, "query_order", "lifo", NULL, irc); |
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101 | s = set_add(&b->set, "root_nick", ROOT_NICK, set_eval_root_nick, irc); |
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102 | s->flags |= SET_HIDDEN; |
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103 | s = set_add(&b->set, "show_offline", "false", set_eval_bw_compat, irc); |
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104 | s->flags |= SET_HIDDEN; |
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105 | s = set_add(&b->set, "self_messages", "true", set_eval_self_messages, irc); |
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106 | s = set_add(&b->set, "simulate_netsplit", "true", set_eval_bool, irc); |
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107 | s = set_add(&b->set, "timezone", "local", set_eval_timezone, irc); |
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108 | s = set_add(&b->set, "to_char", ": ", set_eval_to_char, irc); |
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109 | s = set_add(&b->set, "typing_notice", "false", set_eval_bool, irc); |
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110 | s = set_add(&b->set, "utf8_nicks", "false", set_eval_utf8_nicks, irc); |
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111 | |
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112 | irc->root = iu = irc_user_new(irc, ROOT_NICK); |
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113 | iu->fullname = g_strdup(ROOT_FN); |
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114 | iu->f = &irc_user_root_funcs; |
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115 | |
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116 | iu = irc_user_new(irc, NS_NICK); |
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117 | iu->fullname = g_strdup(ROOT_FN); |
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118 | iu->f = &irc_user_root_funcs; |
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119 | |
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120 | irc->user = g_new0(irc_user_t, 1); |
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121 | |
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122 | irc_set_hosts(irc, NULL, 0); |
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123 | |
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124 | conf_loaddefaults(irc); |
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125 | |
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126 | /* Evaluator sets the iconv/oconv structures. */ |
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127 | set_eval_charset(set_find(&b->set, "charset"), set_getstr(&b->set, "charset")); |
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128 | |
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129 | irc_write(irc, ":%s NOTICE * :%s", irc->root->host, "BitlBee-IRCd initialized, please go on"); |
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130 | if (isatty(irc->fd)) { |
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131 | irc_write(irc, ":%s NOTICE * :%s", irc->root->host, |
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132 | "If you read this, you most likely accidentally " |
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133 | "started BitlBee in inetd mode on the command line."); |
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134 | irc_write(irc, ":%s NOTICE * :%s", irc->root->host, |
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135 | "You probably want to run it as a system service, " |
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136 | "or use (Fork)Daemon mode with the -F or -D switches. " |
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137 | "See doc/README or 'man bitlbee' for more information."); |
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138 | } |
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139 | |
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140 | /* libpurple doesn't like fork()s after initializing itself, so this |
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141 | is the right moment to initialize it. */ |
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142 | #ifdef WITH_PURPLE |
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143 | nogaim_init(); |
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144 | #endif |
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145 | |
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146 | /* SSL library initialization also should be done after the fork, to |
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147 | avoid shared CSPRNG state. This is required by NSS, which refuses to |
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148 | work if a fork is detected */ |
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149 | ssl_init(); |
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150 | |
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151 | for (l = irc_plugins; l; l = l->next) { |
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152 | irc_plugin_t *p = l->data; |
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153 | if (p->irc_new) { |
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154 | p->irc_new(irc); |
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155 | } |
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156 | } |
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157 | |
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158 | return irc; |
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159 | } |
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160 | |
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161 | void irc_set_hosts(irc_t *irc, const struct sockaddr *remote_addr, const socklen_t remote_addrlen) |
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162 | { |
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163 | struct sockaddr_storage sock; |
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164 | socklen_t socklen = sizeof(sock); |
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165 | char *host = NULL, *myhost = NULL; |
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166 | struct irc_user *iu; |
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167 | |
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168 | if (global.conf->hostname) { |
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169 | myhost = g_strdup(global.conf->hostname); |
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170 | } else if (getsockname(irc->fd, (struct sockaddr*) &sock, &socklen) == 0) { |
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171 | myhost = reverse_lookup((struct sockaddr*) &sock, socklen); |
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172 | } |
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173 | |
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174 | if (remote_addrlen > 0) { |
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175 | host = reverse_lookup(remote_addr, remote_addrlen); |
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176 | } else if (getpeername(irc->fd, (struct sockaddr*) &sock, &socklen) == 0) { |
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177 | host = reverse_lookup((struct sockaddr*) &sock, socklen); |
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178 | } |
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179 | |
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180 | if (myhost == NULL) { |
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181 | myhost = g_strdup("localhost.localdomain"); |
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182 | } |
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183 | if (host == NULL) { |
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184 | host = g_strdup("localhost.localdomain"); |
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185 | } |
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186 | |
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187 | if (irc->root->host != irc->root->nick) { |
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188 | g_free(irc->root->host); |
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189 | } |
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190 | irc->root->host = g_strdup(myhost); |
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191 | if ((iu = irc_user_by_name(irc, NS_NICK))) { |
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192 | if (iu->host != iu->nick) { |
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193 | g_free(iu->host); |
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194 | } |
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195 | iu->host = g_strdup(myhost); |
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196 | } |
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197 | |
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198 | if (irc->user->host != irc->user->nick) { |
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199 | g_free(irc->user->host); |
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200 | } |
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201 | irc->user->host = g_strdup(host); |
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202 | |
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203 | g_free(myhost); |
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204 | g_free(host); |
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205 | } |
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206 | |
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207 | /* immed=1 makes this function pretty much equal to irc_free(), except that |
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208 | this one will "log". In case the connection is already broken and we |
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209 | shouldn't try to write to it. */ |
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210 | void irc_abort(irc_t *irc, int immed, char *format, ...) |
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211 | { |
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212 | char *reason = NULL; |
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213 | |
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214 | if (format != NULL) { |
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215 | va_list params; |
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216 | |
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217 | va_start(params, format); |
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218 | reason = g_strdup_vprintf(format, params); |
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219 | va_end(params); |
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220 | } |
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221 | |
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222 | if (reason) { |
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223 | irc_write(irc, "ERROR :Closing link: %s", reason); |
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224 | } |
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225 | |
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226 | ipc_to_master_str("OPERMSG :Client exiting: %s@%s [%s]\r\n", |
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227 | irc->user->nick ? irc->user->nick : "(NONE)", |
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228 | irc->user->host, reason ? : ""); |
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229 | |
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230 | g_free(reason); |
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231 | |
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232 | irc_flush(irc); |
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233 | if (immed) { |
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234 | irc_free(irc); |
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235 | } else { |
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236 | b_event_remove(irc->ping_source_id); |
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237 | irc->ping_source_id = b_timeout_add(1, (b_event_handler) irc_free, irc); |
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238 | } |
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239 | } |
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240 | |
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241 | static gboolean irc_free_hashkey(gpointer key, gpointer value, gpointer data); |
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242 | |
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243 | void irc_free(irc_t * irc) |
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244 | { |
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245 | GSList *l; |
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246 | GHashTableIter iter; |
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247 | gpointer itervalue; |
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248 | |
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249 | irc->status |= USTATUS_SHUTDOWN; |
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250 | |
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251 | log_message(LOGLVL_INFO, "Destroying connection with fd %d", irc->fd); |
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252 | |
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253 | if (irc->status & USTATUS_IDENTIFIED && set_getbool(&irc->b->set, "save_on_quit")) { |
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254 | if (storage_save(irc, NULL, TRUE) != STORAGE_OK) { |
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255 | log_message(LOGLVL_WARNING, "Error while saving settings for user %s", irc->user->nick); |
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256 | } |
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257 | } |
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258 | |
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259 | for (l = irc_plugins; l; l = l->next) { |
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260 | irc_plugin_t *p = l->data; |
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261 | if (p->irc_free) { |
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262 | p->irc_free(irc); |
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263 | } |
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264 | } |
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265 | |
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266 | irc_connection_list = g_slist_remove(irc_connection_list, irc); |
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267 | |
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268 | while (irc->queries != NULL) { |
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269 | query_del(irc, irc->queries); |
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270 | } |
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271 | |
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272 | /* This is a little bit messy: bee_free() frees all b->users which |
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273 | calls us back to free the corresponding irc->users. So do this |
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274 | before we clear the remaining ones ourselves. */ |
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275 | bee_free(irc->b); |
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276 | |
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277 | g_hash_table_iter_init(&iter, irc->nick_user_hash); |
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278 | |
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279 | while (g_hash_table_iter_next(&iter, NULL, &itervalue)) { |
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280 | g_hash_table_iter_remove(&iter); |
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281 | irc_user_free(irc, (irc_user_t *) itervalue); |
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282 | } |
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283 | |
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284 | while (irc->channels) { |
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285 | irc_channel_free(irc->channels->data); |
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286 | } |
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287 | |
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288 | if (irc->ping_source_id > 0) { |
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289 | b_event_remove(irc->ping_source_id); |
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290 | } |
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291 | if (irc->r_watch_source_id > 0) { |
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292 | b_event_remove(irc->r_watch_source_id); |
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293 | } |
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294 | if (irc->w_watch_source_id > 0) { |
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295 | b_event_remove(irc->w_watch_source_id); |
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296 | } |
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297 | |
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298 | closesocket(irc->fd); |
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299 | irc->fd = -1; |
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300 | |
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301 | g_hash_table_destroy(irc->nick_user_hash); |
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302 | |
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303 | g_hash_table_foreach_remove(irc->watches, irc_free_hashkey, NULL); |
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304 | g_hash_table_destroy(irc->watches); |
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305 | |
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306 | if (irc->iconv != (GIConv) - 1) { |
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307 | g_iconv_close(irc->iconv); |
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308 | } |
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309 | if (irc->oconv != (GIConv) - 1) { |
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310 | g_iconv_close(irc->oconv); |
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311 | } |
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312 | |
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313 | g_string_free(irc->sendbuffer, TRUE); |
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314 | g_free(irc->readbuffer); |
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315 | g_free(irc->password); |
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316 | |
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317 | g_free(irc); |
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318 | |
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319 | if (global.conf->runmode == RUNMODE_INETD || |
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320 | global.conf->runmode == RUNMODE_FORKDAEMON || |
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321 | (global.conf->runmode == RUNMODE_DAEMON && |
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322 | global.listen_socket == -1 && |
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323 | irc_connection_list == NULL)) { |
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324 | b_main_quit(); |
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325 | } |
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326 | } |
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327 | |
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328 | static gboolean irc_free_hashkey(gpointer key, gpointer value, gpointer data) |
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329 | { |
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330 | g_free(key); |
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331 | |
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332 | return(TRUE); |
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333 | } |
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334 | |
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335 | /* USE WITH CAUTION! |
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336 | Sets pass without checking */ |
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337 | void irc_setpass(irc_t *irc, const char *pass) |
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338 | { |
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339 | g_free(irc->password); |
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340 | |
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341 | if (pass) { |
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342 | irc->password = g_strdup(pass); |
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343 | } else { |
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344 | irc->password = NULL; |
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345 | } |
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346 | } |
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347 | |
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348 | static char *set_eval_password(set_t *set, char *value) |
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349 | { |
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350 | irc_t *irc = set->data; |
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351 | |
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352 | if (irc->status & USTATUS_IDENTIFIED && value) { |
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353 | irc_setpass(irc, value); |
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354 | return NULL; |
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355 | } else { |
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356 | return SET_INVALID; |
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357 | } |
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358 | } |
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359 | |
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360 | static char **irc_splitlines(char *buffer); |
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361 | |
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362 | void irc_process(irc_t *irc) |
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363 | { |
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364 | char **lines, *temp, **cmd; |
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365 | int i; |
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366 | |
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367 | if (irc->readbuffer != NULL) { |
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368 | lines = irc_splitlines(irc->readbuffer); |
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369 | |
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370 | for (i = 0; *lines[i] != '\0'; i++) { |
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371 | char *conv = NULL; |
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372 | |
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373 | /* [WvG] If the last line isn't empty, it's an incomplete line and we |
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374 | should wait for the rest to come in before processing it. */ |
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375 | if (lines[i + 1] == NULL) { |
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376 | temp = g_strdup(lines[i]); |
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377 | g_free(irc->readbuffer); |
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378 | irc->readbuffer = temp; |
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379 | i++; |
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380 | break; |
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381 | } |
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382 | |
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383 | if (irc->iconv != (GIConv) - 1) { |
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384 | gsize bytes_read, bytes_written; |
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385 | |
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386 | conv = g_convert_with_iconv(lines[i], -1, irc->iconv, |
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387 | &bytes_read, &bytes_written, NULL); |
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388 | |
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389 | if (conv == NULL || bytes_read != strlen(lines[i])) { |
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390 | /* GLib can do strange things if things are not in the expected charset, |
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391 | so let's be a little bit paranoid here: */ |
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392 | if (irc->status & USTATUS_LOGGED_IN) { |
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393 | irc_rootmsg(irc, "Error: Charset mismatch detected. The charset " |
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394 | "setting is currently set to %s, so please make " |
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395 | "sure your IRC client will send and accept text in " |
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396 | "that charset, or tell BitlBee which charset to " |
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397 | "expect by changing the charset setting. See " |
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398 | "`help set charset' for more information. Your " |
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399 | "message was ignored.", |
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400 | set_getstr(&irc->b->set, "charset")); |
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401 | |
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402 | g_free(conv); |
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403 | conv = NULL; |
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404 | } else { |
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405 | irc_write(irc, ":%s NOTICE * :%s", irc->root->host, |
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406 | "Warning: invalid characters received at login time."); |
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407 | |
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408 | conv = g_strdup(lines[i]); |
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409 | for (temp = conv; *temp; temp++) { |
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410 | if (*temp & 0x80) { |
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411 | *temp = '?'; |
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412 | } |
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413 | } |
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414 | } |
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415 | } |
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416 | lines[i] = conv; |
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417 | } |
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418 | |
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419 | if (lines[i] && (cmd = irc_parse_line(lines[i]))) { |
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420 | irc_exec(irc, cmd); |
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421 | g_free(cmd); |
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422 | } |
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423 | |
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424 | g_free(conv); |
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425 | |
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426 | /* Shouldn't really happen, but just in case... */ |
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427 | if (!g_slist_find(irc_connection_list, irc)) { |
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428 | g_free(lines); |
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429 | return; |
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430 | } |
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431 | } |
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432 | |
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433 | if (lines[i] != NULL) { |
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434 | g_free(irc->readbuffer); |
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435 | irc->readbuffer = NULL; |
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436 | } |
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437 | |
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438 | g_free(lines); |
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439 | } |
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440 | } |
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441 | |
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442 | /* Splits a long string into separate lines. The array is NULL-terminated |
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443 | and, unless the string contains an incomplete line at the end, ends with |
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444 | an empty string. Could use g_strsplit() but this one does it in-place. |
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445 | (So yes, it's destructive.) */ |
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446 | static char **irc_splitlines(char *buffer) |
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447 | { |
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448 | int i, j, n = 3; |
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449 | char **lines; |
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450 | |
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451 | /* Allocate n+1 elements. */ |
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452 | lines = g_new(char *, n + 1); |
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453 | |
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454 | lines[0] = buffer; |
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455 | |
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456 | /* Split the buffer in several strings, and accept any kind of line endings, |
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457 | * knowing that ERC on Windows may send something interesting like \r\r\n, |
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458 | * and surely there must be clients that think just \n is enough... */ |
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459 | for (i = 0, j = 0; buffer[i] != '\0'; i++) { |
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460 | if (buffer[i] == '\r' || buffer[i] == '\n') { |
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461 | while (buffer[i] == '\r' || buffer[i] == '\n') { |
---|
462 | buffer[i++] = '\0'; |
---|
463 | } |
---|
464 | |
---|
465 | lines[++j] = buffer + i; |
---|
466 | |
---|
467 | if (j >= n) { |
---|
468 | n *= 2; |
---|
469 | lines = g_renew(char *, lines, n + 1); |
---|
470 | } |
---|
471 | |
---|
472 | if (buffer[i] == '\0') { |
---|
473 | break; |
---|
474 | } |
---|
475 | } |
---|
476 | } |
---|
477 | |
---|
478 | /* NULL terminate our list. */ |
---|
479 | lines[++j] = NULL; |
---|
480 | |
---|
481 | return lines; |
---|
482 | } |
---|
483 | |
---|
484 | /* Split an IRC-style line into little parts/arguments. */ |
---|
485 | char **irc_parse_line(char *line) |
---|
486 | { |
---|
487 | int i, j; |
---|
488 | char **cmd; |
---|
489 | |
---|
490 | /* Move the line pointer to the start of the command, skipping spaces and the optional prefix. */ |
---|
491 | if (line[0] == ':') { |
---|
492 | for (i = 0; line[i] && line[i] != ' '; i++) { |
---|
493 | ; |
---|
494 | } |
---|
495 | line = line + i; |
---|
496 | } |
---|
497 | for (i = 0; line[i] == ' '; i++) { |
---|
498 | ; |
---|
499 | } |
---|
500 | line = line + i; |
---|
501 | |
---|
502 | /* If we're already at the end of the line, return. If not, we're going to need at least one element. */ |
---|
503 | if (line[0] == '\0') { |
---|
504 | return NULL; |
---|
505 | } |
---|
506 | |
---|
507 | /* Count the number of char **cmd elements we're going to need. */ |
---|
508 | j = 1; |
---|
509 | for (i = 0; line[i] != '\0'; i++) { |
---|
510 | if (line[i] == ' ') { |
---|
511 | j++; |
---|
512 | |
---|
513 | if (line[i + 1] == ':') { |
---|
514 | break; |
---|
515 | } |
---|
516 | } |
---|
517 | } |
---|
518 | |
---|
519 | /* Allocate the space we need. */ |
---|
520 | cmd = g_new(char *, j + 1); |
---|
521 | cmd[j] = NULL; |
---|
522 | |
---|
523 | /* Do the actual line splitting, format is: |
---|
524 | * Input: "PRIVMSG #bitlbee :foo bar" |
---|
525 | * Output: cmd[0]=="PRIVMSG", cmd[1]=="#bitlbee", cmd[2]=="foo bar", cmd[3]==NULL |
---|
526 | */ |
---|
527 | |
---|
528 | cmd[0] = line; |
---|
529 | for (i = 0, j = 0; line[i] != '\0'; i++) { |
---|
530 | if (line[i] == ' ') { |
---|
531 | line[i] = '\0'; |
---|
532 | cmd[++j] = line + i + 1; |
---|
533 | |
---|
534 | if (line[i + 1] == ':') { |
---|
535 | cmd[j]++; |
---|
536 | break; |
---|
537 | } |
---|
538 | } |
---|
539 | } |
---|
540 | |
---|
541 | return cmd; |
---|
542 | } |
---|
543 | |
---|
544 | /* Converts such an array back into a command string. Mainly used for the IPC code right now. */ |
---|
545 | char *irc_build_line(char **cmd) |
---|
546 | { |
---|
547 | int i, len; |
---|
548 | char *s; |
---|
549 | |
---|
550 | if (cmd[0] == NULL) { |
---|
551 | return NULL; |
---|
552 | } |
---|
553 | |
---|
554 | len = 1; |
---|
555 | for (i = 0; cmd[i]; i++) { |
---|
556 | len += strlen(cmd[i]) + 1; |
---|
557 | } |
---|
558 | |
---|
559 | if (strchr(cmd[i - 1], ' ') != NULL) { |
---|
560 | len++; |
---|
561 | } |
---|
562 | |
---|
563 | s = g_new0(char, len + 1); |
---|
564 | for (i = 0; cmd[i]; i++) { |
---|
565 | if (cmd[i + 1] == NULL && strchr(cmd[i], ' ') != NULL) { |
---|
566 | strcat(s, ":"); |
---|
567 | } |
---|
568 | |
---|
569 | strcat(s, cmd[i]); |
---|
570 | |
---|
571 | if (cmd[i + 1]) { |
---|
572 | strcat(s, " "); |
---|
573 | } |
---|
574 | } |
---|
575 | strcat(s, "\r\n"); |
---|
576 | |
---|
577 | return s; |
---|
578 | } |
---|
579 | |
---|
580 | void irc_write(irc_t *irc, char *format, ...) |
---|
581 | { |
---|
582 | va_list params; |
---|
583 | |
---|
584 | va_start(params, format); |
---|
585 | irc_vawrite(irc, format, params); |
---|
586 | va_end(params); |
---|
587 | |
---|
588 | return; |
---|
589 | } |
---|
590 | |
---|
591 | void irc_write_all(int now, char *format, ...) |
---|
592 | { |
---|
593 | va_list params; |
---|
594 | GSList *temp; |
---|
595 | |
---|
596 | va_start(params, format); |
---|
597 | |
---|
598 | temp = irc_connection_list; |
---|
599 | while (temp != NULL) { |
---|
600 | irc_t *irc = temp->data; |
---|
601 | |
---|
602 | if (now) { |
---|
603 | g_string_assign(irc->sendbuffer, "\r\n"); |
---|
604 | } |
---|
605 | irc_vawrite(temp->data, format, params); |
---|
606 | if (now) { |
---|
607 | bitlbee_io_current_client_write(irc, irc->fd, B_EV_IO_WRITE); |
---|
608 | } |
---|
609 | temp = temp->next; |
---|
610 | } |
---|
611 | |
---|
612 | va_end(params); |
---|
613 | return; |
---|
614 | } |
---|
615 | |
---|
616 | void irc_vawrite(irc_t *irc, char *format, va_list params) |
---|
617 | { |
---|
618 | char line[IRC_MAX_LINE + 1]; |
---|
619 | |
---|
620 | /* Don't try to write anything new anymore when shutting down. */ |
---|
621 | if (irc->status & USTATUS_SHUTDOWN) { |
---|
622 | return; |
---|
623 | } |
---|
624 | |
---|
625 | memset(line, 0, sizeof(line)); |
---|
626 | g_vsnprintf(line, IRC_MAX_LINE - 2, format, params); |
---|
627 | strip_newlines(line); |
---|
628 | |
---|
629 | if (irc->oconv != (GIConv) - 1) { |
---|
630 | gsize bytes_read, bytes_written; |
---|
631 | char *conv; |
---|
632 | |
---|
633 | conv = g_convert_with_iconv(line, -1, irc->oconv, |
---|
634 | &bytes_read, &bytes_written, NULL); |
---|
635 | |
---|
636 | if (bytes_read == strlen(line)) { |
---|
637 | strncpy(line, conv, IRC_MAX_LINE - 2); |
---|
638 | } |
---|
639 | |
---|
640 | g_free(conv); |
---|
641 | } |
---|
642 | g_strlcat(line, "\r\n", IRC_MAX_LINE + 1); |
---|
643 | |
---|
644 | g_string_append(irc->sendbuffer, line); |
---|
645 | |
---|
646 | if (irc->w_watch_source_id == 0) { |
---|
647 | /* If the buffer is empty we can probably write, so call the write event handler |
---|
648 | immediately. If it returns TRUE, it should be called again, so add the event to |
---|
649 | the queue. If it's FALSE, we emptied the buffer and saved ourselves some work |
---|
650 | in the event queue. */ |
---|
651 | /* Really can't be done as long as the code doesn't do error checking very well: |
---|
652 | if( bitlbee_io_current_client_write( irc, irc->fd, B_EV_IO_WRITE ) ) */ |
---|
653 | |
---|
654 | /* So just always do it via the event handler. */ |
---|
655 | irc->w_watch_source_id = b_input_add(irc->fd, B_EV_IO_WRITE, bitlbee_io_current_client_write, irc); |
---|
656 | } |
---|
657 | |
---|
658 | return; |
---|
659 | } |
---|
660 | |
---|
661 | /* Flush sendbuffer if you can. If it fails, fail silently and let some |
---|
662 | I/O event handler clean up. */ |
---|
663 | void irc_flush(irc_t *irc) |
---|
664 | { |
---|
665 | ssize_t n; |
---|
666 | size_t len = irc->sendbuffer->len; |
---|
667 | |
---|
668 | if (len == 0) { |
---|
669 | return; |
---|
670 | } |
---|
671 | |
---|
672 | if ((n = send(irc->fd, irc->sendbuffer->str, len, 0)) == len) { |
---|
673 | g_string_truncate(irc->sendbuffer, 0); |
---|
674 | |
---|
675 | b_event_remove(irc->w_watch_source_id); |
---|
676 | irc->w_watch_source_id = 0; |
---|
677 | } else if (n > 0) { |
---|
678 | g_string_erase(irc->sendbuffer, 0, n); |
---|
679 | } |
---|
680 | /* Otherwise something went wrong and we don't currently care |
---|
681 | what the error was. We may or may not succeed later, we |
---|
682 | were just trying to flush the buffer immediately. */ |
---|
683 | } |
---|
684 | |
---|
685 | /* Meant for takeover functionality. Transfer an IRC connection to a different |
---|
686 | socket. */ |
---|
687 | void irc_switch_fd(irc_t *irc, int fd) |
---|
688 | { |
---|
689 | irc_write(irc, "ERROR :Transferring session to a new connection"); |
---|
690 | irc_flush(irc); /* Write it now or forget about it forever. */ |
---|
691 | |
---|
692 | if (irc->sendbuffer) { |
---|
693 | b_event_remove(irc->w_watch_source_id); |
---|
694 | irc->w_watch_source_id = 0; |
---|
695 | g_string_truncate(irc->sendbuffer, 0); |
---|
696 | } |
---|
697 | |
---|
698 | b_event_remove(irc->r_watch_source_id); |
---|
699 | closesocket(irc->fd); |
---|
700 | irc->fd = fd; |
---|
701 | irc->r_watch_source_id = b_input_add(irc->fd, B_EV_IO_READ, bitlbee_io_current_client_read, irc); |
---|
702 | } |
---|
703 | |
---|
704 | void irc_sync(irc_t *irc) |
---|
705 | { |
---|
706 | GSList *l; |
---|
707 | |
---|
708 | irc_write(irc, ":%s!%s@%s MODE %s :+%s", irc->user->nick, |
---|
709 | irc->user->user, irc->user->host, irc->user->nick, |
---|
710 | irc->umode); |
---|
711 | |
---|
712 | for (l = irc->channels; l; l = l->next) { |
---|
713 | irc_channel_t *ic = l->data; |
---|
714 | if (ic->flags & IRC_CHANNEL_JOINED) { |
---|
715 | irc_send_join(ic, irc->user); |
---|
716 | } |
---|
717 | } |
---|
718 | |
---|
719 | /* We may be waiting for a PONG from the previous client connection. */ |
---|
720 | irc->pinging = FALSE; |
---|
721 | } |
---|
722 | |
---|
723 | void irc_desync(irc_t *irc) |
---|
724 | { |
---|
725 | GSList *l; |
---|
726 | |
---|
727 | for (l = irc->channels; l; l = l->next) { |
---|
728 | irc_channel_del_user(l->data, irc->user, IRC_CDU_KICK, |
---|
729 | "Switching to old session"); |
---|
730 | } |
---|
731 | |
---|
732 | irc_write(irc, ":%s!%s@%s MODE %s :-%s", irc->user->nick, |
---|
733 | irc->user->user, irc->user->host, irc->user->nick, |
---|
734 | irc->umode); |
---|
735 | } |
---|
736 | |
---|
737 | int irc_check_login(irc_t *irc) |
---|
738 | { |
---|
739 | if (irc->user->user && irc->user->nick && !(irc->status & USTATUS_CAP_PENDING)) { |
---|
740 | if (global.conf->authmode == AUTHMODE_CLOSED && !(irc->status & USTATUS_AUTHORIZED)) { |
---|
741 | irc_send_num(irc, 464, ":This server is password-protected."); |
---|
742 | return 0; |
---|
743 | } else { |
---|
744 | irc_channel_t *ic; |
---|
745 | irc_user_t *iu = irc->user; |
---|
746 | |
---|
747 | irc->user = irc_user_new(irc, iu->nick); |
---|
748 | irc->user->user = iu->user; |
---|
749 | irc->user->host = iu->host; |
---|
750 | irc->user->fullname = iu->fullname; |
---|
751 | irc->user->f = &irc_user_self_funcs; |
---|
752 | g_free(iu->nick); |
---|
753 | g_free(iu); |
---|
754 | |
---|
755 | if (global.conf->runmode == RUNMODE_FORKDAEMON || global.conf->runmode == RUNMODE_DAEMON) { |
---|
756 | ipc_to_master_str("CLIENT %s %s :%s\r\n", irc->user->host, irc->user->nick, |
---|
757 | irc->user->fullname); |
---|
758 | } |
---|
759 | |
---|
760 | irc->status |= USTATUS_LOGGED_IN; |
---|
761 | |
---|
762 | irc_send_login(irc); |
---|
763 | |
---|
764 | irc->umode[0] = '\0'; |
---|
765 | irc_umode_set(irc, "+" UMODE, TRUE); |
---|
766 | |
---|
767 | ic = irc->default_channel = irc_channel_new(irc, ROOT_CHAN); |
---|
768 | irc_channel_set_topic(ic, CONTROL_TOPIC, irc->root); |
---|
769 | set_setstr(&ic->set, "auto_join", "true"); |
---|
770 | irc_channel_auto_joins(irc, NULL); |
---|
771 | |
---|
772 | irc->root->last_channel = irc->default_channel; |
---|
773 | |
---|
774 | irc_rootmsg(irc, |
---|
775 | "Welcome to the BitlBee gateway!\n\n" |
---|
776 | "Running %s %s\n\n" |
---|
777 | "If you've never used BitlBee before, please do read the help " |
---|
778 | "information using the \x02help\x02 command. Lots of FAQs are " |
---|
779 | "answered there.\n" |
---|
780 | "If you already have an account on this server, just use the " |
---|
781 | "\x02identify\x02 command to identify yourself.", |
---|
782 | PACKAGE, BITLBEE_VERSION); |
---|
783 | |
---|
784 | /* This is for bug #209 (use PASS to identify to NickServ). */ |
---|
785 | if (irc->password != NULL) { |
---|
786 | char *send_cmd[] = { "identify", g_strdup(irc->password), NULL }; |
---|
787 | |
---|
788 | irc_setpass(irc, NULL); |
---|
789 | root_command(irc, send_cmd); |
---|
790 | g_free(send_cmd[1]); |
---|
791 | } |
---|
792 | |
---|
793 | return 1; |
---|
794 | } |
---|
795 | } else { |
---|
796 | /* More information needed. */ |
---|
797 | return 0; |
---|
798 | } |
---|
799 | } |
---|
800 | |
---|
801 | /* TODO: This is a mess, but this function is a bit too complicated to be |
---|
802 | converted to something more generic. */ |
---|
803 | void irc_umode_set(irc_t *irc, const char *s, gboolean allow_priv) |
---|
804 | { |
---|
805 | /* allow_priv: Set to 0 if s contains user input, 1 if you want |
---|
806 | to set a "privileged" mode (+o, +R, etc). */ |
---|
807 | char m[128], st = 1; |
---|
808 | const char *t; |
---|
809 | int i; |
---|
810 | char changes[512], st2 = 2; |
---|
811 | char badflag = 0; |
---|
812 | |
---|
813 | memset(m, 0, sizeof(m)); |
---|
814 | |
---|
815 | /* Keep track of which modes are enabled in this array. */ |
---|
816 | for (t = irc->umode; *t; t++) { |
---|
817 | if (*t < sizeof(m)) { |
---|
818 | m[(int) *t] = 1; |
---|
819 | } |
---|
820 | } |
---|
821 | |
---|
822 | i = 0; |
---|
823 | for (t = s; *t && i < sizeof(changes) - 3; t++) { |
---|
824 | if (*t == '+' || *t == '-') { |
---|
825 | st = *t == '+'; |
---|
826 | } else if ((st == 0 && (!strchr(UMODES_KEEP, *t) || allow_priv)) || |
---|
827 | (st == 1 && strchr(UMODES, *t)) || |
---|
828 | (st == 1 && allow_priv && strchr(UMODES_PRIV, *t))) { |
---|
829 | if (m[(int) *t] != st) { |
---|
830 | /* If we're actually making a change, remember this |
---|
831 | for the response. */ |
---|
832 | if (st != st2) { |
---|
833 | st2 = st, changes[i++] = st ? '+' : '-'; |
---|
834 | } |
---|
835 | changes[i++] = *t; |
---|
836 | } |
---|
837 | m[(int) *t] = st; |
---|
838 | } else { |
---|
839 | badflag = 1; |
---|
840 | } |
---|
841 | } |
---|
842 | changes[i] = '\0'; |
---|
843 | |
---|
844 | /* Convert the m array back into an umode string. */ |
---|
845 | memset(irc->umode, 0, sizeof(irc->umode)); |
---|
846 | for (i = 'A'; i <= 'z' && strlen(irc->umode) < (sizeof(irc->umode) - 1); i++) { |
---|
847 | if (m[i]) { |
---|
848 | irc->umode[strlen(irc->umode)] = i; |
---|
849 | } |
---|
850 | } |
---|
851 | |
---|
852 | if (badflag) { |
---|
853 | irc_send_num(irc, 501, ":Unknown MODE flag"); |
---|
854 | } |
---|
855 | if (*changes) { |
---|
856 | irc_write(irc, ":%s!%s@%s MODE %s :%s", irc->user->nick, |
---|
857 | irc->user->user, irc->user->host, irc->user->nick, |
---|
858 | changes); |
---|
859 | } |
---|
860 | } |
---|
861 | |
---|
862 | /* Returns 0 if everything seems to be okay, a number >0 when there was a |
---|
863 | timeout. The number returned is the number of seconds we received no |
---|
864 | pongs from the user. When not connected yet, we don't ping but drop the |
---|
865 | connection when the user fails to connect in IRC_LOGIN_TIMEOUT secs. */ |
---|
866 | static gboolean irc_userping(gpointer _irc, gint fd, b_input_condition cond) |
---|
867 | { |
---|
868 | double now = gettime(); |
---|
869 | irc_t *irc = _irc; |
---|
870 | int fail = 0; |
---|
871 | |
---|
872 | if (!(irc->status & USTATUS_LOGGED_IN)) { |
---|
873 | if (now > (irc->last_pong + IRC_LOGIN_TIMEOUT)) { |
---|
874 | fail = now - irc->last_pong; |
---|
875 | } |
---|
876 | } else { |
---|
877 | if (now > (irc->last_pong + global.conf->ping_timeout)) { |
---|
878 | fail = now - irc->last_pong; |
---|
879 | } else { |
---|
880 | irc_write(irc, "PING :%s", IRC_PING_STRING); |
---|
881 | } |
---|
882 | } |
---|
883 | |
---|
884 | if (fail > 0) { |
---|
885 | irc_abort(irc, 0, "Ping Timeout: %d seconds", fail); |
---|
886 | return FALSE; |
---|
887 | } |
---|
888 | |
---|
889 | return TRUE; |
---|
890 | } |
---|
891 | |
---|
892 | static char *set_eval_charset(set_t *set, char *value) |
---|
893 | { |
---|
894 | irc_t *irc = (irc_t *) set->data; |
---|
895 | char *test; |
---|
896 | gsize test_bytes = 0; |
---|
897 | GIConv ic, oc; |
---|
898 | |
---|
899 | if (g_strcasecmp(value, "none") == 0) { |
---|
900 | value = g_strdup("utf-8"); |
---|
901 | } |
---|
902 | |
---|
903 | if ((oc = g_iconv_open(value, "utf-8")) == (GIConv) - 1) { |
---|
904 | return NULL; |
---|
905 | } |
---|
906 | |
---|
907 | /* Do a test iconv to see if the user picked an IRC-compatible |
---|
908 | charset (for example utf-16 goes *horribly* wrong). */ |
---|
909 | if ((test = g_convert_with_iconv(" ", 1, oc, NULL, &test_bytes, NULL)) == NULL || |
---|
910 | test_bytes > 1) { |
---|
911 | g_free(test); |
---|
912 | g_iconv_close(oc); |
---|
913 | irc_rootmsg(irc, "Unsupported character set: The IRC protocol " |
---|
914 | "only supports 8-bit character sets."); |
---|
915 | return NULL; |
---|
916 | } |
---|
917 | g_free(test); |
---|
918 | |
---|
919 | if ((ic = g_iconv_open("utf-8", value)) == (GIConv) - 1) { |
---|
920 | g_iconv_close(oc); |
---|
921 | return NULL; |
---|
922 | } |
---|
923 | |
---|
924 | if (irc->iconv != (GIConv) - 1) { |
---|
925 | g_iconv_close(irc->iconv); |
---|
926 | } |
---|
927 | if (irc->oconv != (GIConv) - 1) { |
---|
928 | g_iconv_close(irc->oconv); |
---|
929 | } |
---|
930 | |
---|
931 | irc->iconv = ic; |
---|
932 | irc->oconv = oc; |
---|
933 | |
---|
934 | return value; |
---|
935 | } |
---|
936 | |
---|
937 | /* Mostly meant for upgrades. If one of these is set to the non-default, |
---|
938 | set show_users of all channels to something with the same effect. */ |
---|
939 | static char *set_eval_bw_compat(set_t *set, char *value) |
---|
940 | { |
---|
941 | irc_t *irc = set->data; |
---|
942 | char *val; |
---|
943 | GSList *l; |
---|
944 | |
---|
945 | irc_rootmsg(irc, "Setting `%s' is obsolete, use the `show_users' " |
---|
946 | "channel setting instead.", set->key); |
---|
947 | |
---|
948 | if (strcmp(set->key, "away_devoice") == 0 && !bool2int(value)) { |
---|
949 | val = "online,special%,away"; |
---|
950 | } else if (strcmp(set->key, "show_offline") == 0 && bool2int(value)) { |
---|
951 | val = "online@,special%,away+,offline"; |
---|
952 | } else { |
---|
953 | val = "online+,special%,away"; |
---|
954 | } |
---|
955 | |
---|
956 | for (l = irc->channels; l; l = l->next) { |
---|
957 | irc_channel_t *ic = l->data; |
---|
958 | /* No need to check channel type, if the setting doesn't exist it |
---|
959 | will just be ignored. */ |
---|
960 | set_setstr(&ic->set, "show_users", val); |
---|
961 | } |
---|
962 | |
---|
963 | return SET_INVALID; |
---|
964 | } |
---|
965 | |
---|
966 | static char *set_eval_utf8_nicks(set_t *set, char *value) |
---|
967 | { |
---|
968 | irc_t *irc = set->data; |
---|
969 | gboolean val = bool2int(value); |
---|
970 | |
---|
971 | /* Do *NOT* unset this flag in the middle of a session. There will |
---|
972 | be UTF-8 nicks around already so if we suddenly disable support |
---|
973 | for them, various functions might behave strangely. */ |
---|
974 | if (val) { |
---|
975 | irc->status |= IRC_UTF8_NICKS; |
---|
976 | } else if (irc->status & IRC_UTF8_NICKS) { |
---|
977 | irc_rootmsg(irc, "You need to reconnect to BitlBee for this " |
---|
978 | "change to take effect."); |
---|
979 | } |
---|
980 | |
---|
981 | return set_eval_bool(set, value); |
---|
982 | } |
---|
983 | |
---|
984 | void register_irc_plugin(const struct irc_plugin *p) |
---|
985 | { |
---|
986 | irc_plugins = g_slist_prepend(irc_plugins, (gpointer) p); |
---|
987 | } |
---|