1 | /***************************************************************************\ |
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2 | * * |
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3 | * BitlBee - An IRC to IM gateway * |
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4 | * Jabber module - Main file * |
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5 | * * |
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6 | * Copyright 2006 Wilmer van der Gaast <wilmer@gaast.net> * |
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7 | * * |
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8 | * This program is free software; you can redistribute it and/or modify * |
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9 | * it under the terms of the GNU General Public License as published by * |
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10 | * the Free Software Foundation; either version 2 of the License, or * |
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11 | * (at your option) any later version. * |
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12 | * * |
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13 | * This program is distributed in the hope that it will be useful, * |
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14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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16 | * GNU General Public License for more details. * |
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17 | * * |
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18 | * You should have received a copy of the GNU General Public License along * |
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19 | * with this program; if not, write to the Free Software Foundation, Inc., * |
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20 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * |
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21 | * * |
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22 | \***************************************************************************/ |
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23 | |
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24 | #include <glib.h> |
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25 | #include <string.h> |
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26 | #include <unistd.h> |
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27 | #include <ctype.h> |
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28 | #include <stdio.h> |
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29 | |
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30 | #include "ssl_client.h" |
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31 | #include "xmltree.h" |
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32 | #include "bitlbee.h" |
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33 | #include "jabber.h" |
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34 | #include "md5.h" |
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35 | |
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36 | GSList *jabber_connections; |
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37 | |
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38 | /* First enty is the default */ |
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39 | static const int jabber_port_list[] = { |
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40 | 5222, |
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41 | 5223, |
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42 | 5220, |
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43 | 5221, |
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44 | 5224, |
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45 | 5225, |
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46 | 5226, |
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47 | 5227, |
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48 | 5228, |
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49 | 5229, |
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50 | 80, |
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51 | 443, |
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52 | 0 |
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53 | }; |
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54 | |
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55 | static void jabber_init( account_t *acc ) |
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56 | { |
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57 | set_t *s; |
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58 | char str[16]; |
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59 | |
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60 | s = set_add( &acc->set, "activity_timeout", "600", set_eval_int, acc ); |
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61 | |
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62 | g_snprintf( str, sizeof( str ), "%d", jabber_port_list[0] ); |
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63 | s = set_add( &acc->set, "port", str, set_eval_int, acc ); |
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64 | s->flags |= ACC_SET_OFFLINE_ONLY; |
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65 | |
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66 | s = set_add( &acc->set, "priority", "0", set_eval_priority, acc ); |
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67 | |
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68 | s = set_add( &acc->set, "resource", "BitlBee", NULL, acc ); |
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69 | s->flags |= ACC_SET_OFFLINE_ONLY; |
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70 | |
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71 | s = set_add( &acc->set, "resource_select", "activity", NULL, acc ); |
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72 | |
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73 | s = set_add( &acc->set, "server", NULL, set_eval_account, acc ); |
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74 | s->flags |= ACC_SET_NOSAVE | ACC_SET_OFFLINE_ONLY | SET_NULL_OK; |
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75 | |
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76 | s = set_add( &acc->set, "ssl", "false", set_eval_bool, acc ); |
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77 | s->flags |= ACC_SET_OFFLINE_ONLY; |
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78 | |
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79 | s = set_add( &acc->set, "tls", "try", set_eval_tls, acc ); |
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80 | s->flags |= ACC_SET_OFFLINE_ONLY; |
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81 | |
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82 | s = set_add( &acc->set, "user_agent", "BitlBee", NULL, acc ); |
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83 | |
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84 | s = set_add( &acc->set, "xmlconsole", "false", set_eval_bool, acc ); |
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85 | s->flags |= ACC_SET_OFFLINE_ONLY; |
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86 | |
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87 | acc->flags |= ACC_FLAG_AWAY_MESSAGE | ACC_FLAG_STATUS_MESSAGE; |
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88 | } |
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89 | |
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90 | static void jabber_generate_id_hash( struct jabber_data *jd ); |
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91 | |
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92 | static void jabber_login( account_t *acc ) |
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93 | { |
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94 | struct im_connection *ic = imcb_new( acc ); |
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95 | struct jabber_data *jd = g_new0( struct jabber_data, 1 ); |
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96 | struct ns_srv_reply *srv = NULL; |
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97 | char *connect_to, *s; |
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98 | int i; |
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99 | |
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100 | /* For now this is needed in the _connected() handlers if using |
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101 | GLib event handling, to make sure we're not handling events |
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102 | on dead connections. */ |
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103 | jabber_connections = g_slist_prepend( jabber_connections, ic ); |
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104 | |
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105 | jd->ic = ic; |
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106 | ic->proto_data = jd; |
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107 | |
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108 | jd->username = g_strdup( acc->user ); |
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109 | jd->server = strchr( jd->username, '@' ); |
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110 | |
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111 | jd->fd = jd->r_inpa = jd->w_inpa = -1; |
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112 | |
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113 | if( jd->server == NULL ) |
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114 | { |
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115 | imcb_error( ic, "Incomplete account name (format it like <username@jabberserver.name>)" ); |
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116 | imc_logout( ic, FALSE ); |
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117 | return; |
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118 | } |
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119 | |
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120 | /* So don't think of free()ing jd->server.. :-) */ |
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121 | *jd->server = 0; |
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122 | jd->server ++; |
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123 | |
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124 | if( ( s = strchr( jd->server, '/' ) ) ) |
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125 | { |
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126 | *s = 0; |
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127 | set_setstr( &acc->set, "resource", s + 1 ); |
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128 | |
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129 | /* Also remove the /resource from the original variable so we |
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130 | won't have to do this again every time. */ |
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131 | s = strchr( acc->user, '/' ); |
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132 | *s = 0; |
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133 | } |
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134 | |
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135 | /* This code isn't really pretty. Backwards compatibility never is... */ |
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136 | s = acc->server; |
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137 | while( s ) |
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138 | { |
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139 | static int had_port = 0; |
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140 | |
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141 | if( strncmp( s, "ssl", 3 ) == 0 ) |
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142 | { |
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143 | set_setstr( &acc->set, "ssl", "true" ); |
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144 | |
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145 | /* Flush this part so that (if this was the first |
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146 | part of the server string) acc->server gets |
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147 | flushed. We don't want to have to do this another |
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148 | time. :-) */ |
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149 | *s = 0; |
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150 | s ++; |
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151 | |
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152 | /* Only set this if the user didn't specify a custom |
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153 | port number already... */ |
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154 | if( !had_port ) |
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155 | set_setint( &acc->set, "port", 5223 ); |
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156 | } |
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157 | else if( isdigit( *s ) ) |
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158 | { |
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159 | int i; |
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160 | |
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161 | /* The first character is a digit. It could be an |
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162 | IP address though. Only accept this as a port# |
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163 | if there are only digits. */ |
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164 | for( i = 0; isdigit( s[i] ); i ++ ); |
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165 | |
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166 | /* If the first non-digit character is a colon or |
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167 | the end of the string, save the port number |
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168 | where it should be. */ |
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169 | if( s[i] == ':' || s[i] == 0 ) |
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170 | { |
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171 | sscanf( s, "%d", &i ); |
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172 | set_setint( &acc->set, "port", i ); |
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173 | |
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174 | /* See above. */ |
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175 | *s = 0; |
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176 | s ++; |
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177 | } |
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178 | |
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179 | had_port = 1; |
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180 | } |
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181 | |
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182 | s = strchr( s, ':' ); |
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183 | if( s ) |
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184 | { |
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185 | *s = 0; |
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186 | s ++; |
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187 | } |
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188 | } |
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189 | |
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190 | jd->node_cache = g_hash_table_new_full( g_str_hash, g_str_equal, NULL, jabber_cache_entry_free ); |
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191 | jd->buddies = g_hash_table_new( g_str_hash, g_str_equal ); |
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192 | |
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193 | /* Figure out the hostname to connect to. */ |
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194 | if( acc->server && *acc->server ) |
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195 | connect_to = acc->server; |
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196 | else if( ( srv = srv_lookup( "xmpp-client", "tcp", jd->server ) ) || |
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197 | ( srv = srv_lookup( "jabber-client", "tcp", jd->server ) ) ) |
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198 | connect_to = srv->name; |
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199 | else |
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200 | connect_to = jd->server; |
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201 | |
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202 | imcb_log( ic, "Connecting" ); |
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203 | |
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204 | for( i = 0; jabber_port_list[i] > 0; i ++ ) |
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205 | if( set_getint( &acc->set, "port" ) == jabber_port_list[i] ) |
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206 | break; |
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207 | |
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208 | if( jabber_port_list[i] == 0 ) |
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209 | { |
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210 | imcb_log( ic, "Illegal port number" ); |
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211 | imc_logout( ic, FALSE ); |
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212 | return; |
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213 | } |
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214 | |
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215 | /* For non-SSL connections we can try to use the port # from the SRV |
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216 | reply, but let's not do that when using SSL, SSL usually runs on |
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217 | non-standard ports... */ |
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218 | if( set_getbool( &acc->set, "ssl" ) ) |
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219 | { |
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220 | jd->ssl = ssl_connect( connect_to, set_getint( &acc->set, "port" ), jabber_connected_ssl, ic ); |
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221 | jd->fd = jd->ssl ? ssl_getfd( jd->ssl ) : -1; |
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222 | } |
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223 | else |
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224 | { |
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225 | jd->fd = proxy_connect( connect_to, srv ? srv->port : set_getint( &acc->set, "port" ), jabber_connected_plain, ic ); |
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226 | } |
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227 | g_free( srv ); |
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228 | |
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229 | if( jd->fd == -1 ) |
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230 | { |
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231 | imcb_error( ic, "Could not connect to server" ); |
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232 | imc_logout( ic, TRUE ); |
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233 | |
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234 | return; |
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235 | } |
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236 | |
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237 | if( set_getbool( &acc->set, "xmlconsole" ) ) |
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238 | { |
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239 | jd->flags |= JFLAG_XMLCONSOLE; |
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240 | /* Shouldn't really do this at this stage already, maybe. But |
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241 | I think this shouldn't break anything. */ |
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242 | imcb_add_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL ); |
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243 | } |
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244 | |
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245 | jabber_generate_id_hash( jd ); |
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246 | } |
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247 | |
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248 | /* This generates an unfinished md5_state_t variable. Every time we generate |
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249 | an ID, we finish the state by adding a sequence number and take the hash. */ |
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250 | static void jabber_generate_id_hash( struct jabber_data *jd ) |
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251 | { |
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252 | md5_byte_t binbuf[4]; |
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253 | char *s; |
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254 | |
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255 | md5_init( &jd->cached_id_prefix ); |
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256 | md5_append( &jd->cached_id_prefix, (unsigned char *) jd->username, strlen( jd->username ) ); |
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257 | md5_append( &jd->cached_id_prefix, (unsigned char *) jd->server, strlen( jd->server ) ); |
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258 | s = set_getstr( &jd->ic->acc->set, "resource" ); |
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259 | md5_append( &jd->cached_id_prefix, (unsigned char *) s, strlen( s ) ); |
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260 | random_bytes( binbuf, 4 ); |
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261 | md5_append( &jd->cached_id_prefix, binbuf, 4 ); |
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262 | } |
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263 | |
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264 | static void jabber_logout( struct im_connection *ic ) |
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265 | { |
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266 | struct jabber_data *jd = ic->proto_data; |
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267 | |
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268 | if( jd->fd >= 0 ) |
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269 | jabber_end_stream( ic ); |
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270 | |
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271 | while( ic->groupchats ) |
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272 | jabber_chat_free( ic->groupchats ); |
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273 | |
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274 | if( jd->r_inpa >= 0 ) |
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275 | b_event_remove( jd->r_inpa ); |
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276 | if( jd->w_inpa >= 0 ) |
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277 | b_event_remove( jd->w_inpa ); |
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278 | |
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279 | if( jd->ssl ) |
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280 | ssl_disconnect( jd->ssl ); |
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281 | if( jd->fd >= 0 ) |
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282 | closesocket( jd->fd ); |
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283 | |
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284 | if( jd->tx_len ) |
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285 | g_free( jd->txq ); |
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286 | |
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287 | if( jd->node_cache ) |
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288 | g_hash_table_destroy( jd->node_cache ); |
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289 | |
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290 | jabber_buddy_remove_all( ic ); |
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291 | |
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292 | xt_free( jd->xt ); |
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293 | |
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294 | g_free( jd->away_message ); |
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295 | g_free( jd->username ); |
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296 | g_free( jd ); |
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297 | |
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298 | jabber_connections = g_slist_remove( jabber_connections, ic ); |
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299 | } |
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300 | |
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301 | static int jabber_buddy_msg( struct im_connection *ic, char *who, char *message, int flags ) |
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302 | { |
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303 | struct jabber_data *jd = ic->proto_data; |
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304 | struct jabber_buddy *bud; |
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305 | struct xt_node *node; |
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306 | char *s; |
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307 | int st; |
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308 | |
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309 | if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 ) |
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310 | return jabber_write( ic, message, strlen( message ) ); |
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311 | |
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312 | if( ( s = strchr( who, '=' ) ) && jabber_chat_by_jid( ic, s + 1 ) ) |
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313 | bud = jabber_buddy_by_ext_jid( ic, who, 0 ); |
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314 | else |
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315 | bud = jabber_buddy_by_jid( ic, who, GET_BUDDY_BARE_OK ); |
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316 | |
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317 | node = xt_new_node( "body", message, NULL ); |
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318 | node = jabber_make_packet( "message", "chat", bud ? bud->full_jid : who, node ); |
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319 | |
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320 | if( bud && ( jd->flags & JFLAG_WANT_TYPING ) && |
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321 | ( ( bud->flags & JBFLAG_DOES_XEP85 ) || |
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322 | !( bud->flags & JBFLAG_PROBED_XEP85 ) ) ) |
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323 | { |
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324 | struct xt_node *act; |
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325 | |
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326 | /* If the user likes typing notification and if we don't know |
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327 | (and didn't probe before) if this resource supports XEP85, |
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328 | include a probe in this packet now. Also, if we know this |
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329 | buddy does support XEP85, we have to send this <active/> |
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330 | tag to tell that the user stopped typing (well, that's what |
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331 | we guess when s/he pressed Enter...). */ |
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332 | act = xt_new_node( "active", NULL, NULL ); |
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333 | xt_add_attr( act, "xmlns", XMLNS_CHATSTATES ); |
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334 | xt_add_child( node, act ); |
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335 | |
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336 | /* Just make sure we do this only once. */ |
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337 | bud->flags |= JBFLAG_PROBED_XEP85; |
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338 | } |
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339 | |
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340 | st = jabber_write_packet( ic, node ); |
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341 | xt_free_node( node ); |
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342 | |
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343 | return st; |
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344 | } |
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345 | |
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346 | static GList *jabber_away_states( struct im_connection *ic ) |
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347 | { |
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348 | static GList *l = NULL; |
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349 | int i; |
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350 | |
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351 | if( l == NULL ) |
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352 | for( i = 0; jabber_away_state_list[i].full_name; i ++ ) |
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353 | l = g_list_append( l, (void*) jabber_away_state_list[i].full_name ); |
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354 | |
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355 | return l; |
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356 | } |
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357 | |
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358 | static void jabber_get_info( struct im_connection *ic, char *who ) |
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359 | { |
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360 | struct jabber_buddy *bud; |
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361 | |
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362 | bud = jabber_buddy_by_jid( ic, who, GET_BUDDY_FIRST ); |
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363 | |
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364 | while( bud ) |
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365 | { |
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366 | imcb_log( ic, "Buddy %s (%d) information:", bud->full_jid, bud->priority ); |
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367 | if( bud->away_state ) |
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368 | imcb_log( ic, "Away state: %s", bud->away_state->full_name ); |
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369 | imcb_log( ic, "Status message: %s", bud->away_message ? : "(none)" ); |
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370 | |
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371 | bud = bud->next; |
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372 | } |
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373 | |
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374 | jabber_get_vcard( ic, bud ? bud->full_jid : who ); |
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375 | } |
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376 | |
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377 | static void jabber_set_away( struct im_connection *ic, char *state_txt, char *message ) |
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378 | { |
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379 | struct jabber_data *jd = ic->proto_data; |
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380 | |
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381 | /* state_txt == NULL -> Not away. |
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382 | Unknown state -> fall back to the first defined away state. */ |
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383 | jd->away_state = state_txt ? jabber_away_state_by_name( state_txt ) |
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384 | ? : jabber_away_state_list : NULL; |
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385 | |
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386 | g_free( jd->away_message ); |
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387 | jd->away_message = ( message && *message ) ? g_strdup( message ) : NULL; |
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388 | |
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389 | presence_send_update( ic ); |
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390 | } |
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391 | |
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392 | static void jabber_add_buddy( struct im_connection *ic, char *who, char *group ) |
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393 | { |
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394 | struct jabber_data *jd = ic->proto_data; |
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395 | |
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396 | if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 ) |
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397 | { |
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398 | jd->flags |= JFLAG_XMLCONSOLE; |
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399 | imcb_add_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL ); |
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400 | return; |
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401 | } |
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402 | |
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403 | if( jabber_add_to_roster( ic, who, NULL ) ) |
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404 | presence_send_request( ic, who, "subscribe" ); |
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405 | } |
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406 | |
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407 | static void jabber_remove_buddy( struct im_connection *ic, char *who, char *group ) |
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408 | { |
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409 | struct jabber_data *jd = ic->proto_data; |
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410 | |
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411 | if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 ) |
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412 | { |
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413 | jd->flags &= ~JFLAG_XMLCONSOLE; |
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414 | /* Not necessary for now. And for now the code isn't too |
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415 | happy if the buddy is completely gone right after calling |
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416 | this function already. |
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417 | imcb_remove_buddy( ic, JABBER_XMLCONSOLE_HANDLE, NULL ); |
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418 | */ |
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419 | return; |
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420 | } |
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421 | |
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422 | /* We should always do this part. Clean up our administration a little bit. */ |
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423 | jabber_buddy_remove_bare( ic, who ); |
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424 | |
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425 | if( jabber_remove_from_roster( ic, who ) ) |
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426 | presence_send_request( ic, who, "unsubscribe" ); |
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427 | } |
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428 | |
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429 | static struct groupchat *jabber_chat_join_( struct im_connection *ic, const char *room, const char *nick, const char *password ) |
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430 | { |
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431 | if( strchr( room, '@' ) == NULL ) |
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432 | imcb_error( ic, "Invalid room name: %s", room ); |
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433 | else if( jabber_chat_by_jid( ic, room ) ) |
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434 | imcb_error( ic, "Already present in chat `%s'", room ); |
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435 | else |
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436 | return jabber_chat_join( ic, room, nick, password ); |
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437 | |
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438 | return NULL; |
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439 | } |
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440 | |
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441 | static void jabber_chat_msg_( struct groupchat *c, char *message, int flags ) |
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442 | { |
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443 | if( c && message ) |
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444 | jabber_chat_msg( c, message, flags ); |
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445 | } |
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446 | |
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447 | static void jabber_chat_topic_( struct groupchat *c, char *topic ) |
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448 | { |
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449 | if( c && topic ) |
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450 | jabber_chat_topic( c, topic ); |
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451 | } |
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452 | |
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453 | static void jabber_chat_leave_( struct groupchat *c ) |
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454 | { |
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455 | if( c ) |
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456 | jabber_chat_leave( c, NULL ); |
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457 | } |
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458 | |
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459 | static void jabber_chat_invite_( struct groupchat *c, char *who, char *msg ) |
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460 | { |
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461 | struct jabber_chat *jc = c->data; |
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462 | gchar *msg_alt = NULL; |
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463 | |
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464 | if( msg == NULL ) |
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465 | msg_alt = g_strdup_printf( "%s invited you to %s", c->ic->acc->user, jc->name ); |
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466 | |
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467 | if( c && who ) |
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468 | jabber_chat_invite( c, who, msg ? msg : msg_alt ); |
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469 | |
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470 | g_free( msg_alt ); |
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471 | } |
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472 | |
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473 | static void jabber_keepalive( struct im_connection *ic ) |
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474 | { |
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475 | /* Just any whitespace character is enough as a keepalive for XMPP sessions. */ |
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476 | jabber_write( ic, "\n", 1 ); |
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477 | |
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478 | /* This runs the garbage collection every minute, which means every packet |
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479 | is in the cache for about a minute (which should be enough AFAIK). */ |
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480 | jabber_cache_clean( ic ); |
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481 | } |
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482 | |
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483 | static int jabber_send_typing( struct im_connection *ic, char *who, int typing ) |
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484 | { |
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485 | struct jabber_data *jd = ic->proto_data; |
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486 | struct jabber_buddy *bud; |
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487 | |
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488 | /* Enable typing notification related code from now. */ |
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489 | jd->flags |= JFLAG_WANT_TYPING; |
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490 | |
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491 | if( ( bud = jabber_buddy_by_jid( ic, who, 0 ) ) == NULL ) |
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492 | { |
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493 | /* Sending typing notifications to unknown buddies is |
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494 | unsupported for now. Shouldn't be a problem, I think. */ |
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495 | return 0; |
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496 | } |
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497 | |
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498 | if( bud->flags & JBFLAG_DOES_XEP85 ) |
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499 | { |
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500 | /* We're only allowed to send this stuff if we know the other |
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501 | side supports it. */ |
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502 | |
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503 | struct xt_node *node; |
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504 | char *type; |
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505 | int st; |
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506 | |
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507 | if( typing & OPT_TYPING ) |
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508 | type = "composing"; |
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509 | else if( typing & OPT_THINKING ) |
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510 | type = "paused"; |
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511 | else |
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512 | type = "active"; |
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513 | |
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514 | node = xt_new_node( type, NULL, NULL ); |
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515 | xt_add_attr( node, "xmlns", XMLNS_CHATSTATES ); |
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516 | node = jabber_make_packet( "message", "chat", bud->full_jid, node ); |
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517 | |
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518 | st = jabber_write_packet( ic, node ); |
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519 | xt_free_node( node ); |
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520 | |
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521 | return st; |
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522 | } |
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523 | |
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524 | return 1; |
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525 | } |
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526 | |
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527 | void jabber_initmodule() |
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528 | { |
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529 | struct prpl *ret = g_new0( struct prpl, 1 ); |
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530 | |
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531 | ret->name = "jabber"; |
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532 | ret->login = jabber_login; |
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533 | ret->init = jabber_init; |
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534 | ret->logout = jabber_logout; |
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535 | ret->buddy_msg = jabber_buddy_msg; |
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536 | ret->away_states = jabber_away_states; |
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537 | ret->set_away = jabber_set_away; |
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538 | // ret->set_info = jabber_set_info; |
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539 | ret->get_info = jabber_get_info; |
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540 | ret->add_buddy = jabber_add_buddy; |
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541 | ret->remove_buddy = jabber_remove_buddy; |
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542 | ret->chat_msg = jabber_chat_msg_; |
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543 | ret->chat_topic = jabber_chat_topic_; |
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544 | ret->chat_invite = jabber_chat_invite_; |
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545 | ret->chat_leave = jabber_chat_leave_; |
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546 | ret->chat_join = jabber_chat_join_; |
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547 | ret->keepalive = jabber_keepalive; |
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548 | ret->send_typing = jabber_send_typing; |
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549 | ret->handle_cmp = g_strcasecmp; |
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550 | |
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551 | register_protocol( ret ); |
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552 | } |
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