1 | /***************************************************************************\ |
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2 | * * |
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3 | * BitlBee - An IRC to IM gateway * |
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4 | * Jabber module - Handling of presence (tags), etc * |
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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 "jabber.h" |
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25 | |
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26 | xt_status jabber_pkt_presence( struct xt_node *node, gpointer data ) |
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27 | { |
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28 | struct im_connection *ic = data; |
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29 | char *from = xt_find_attr( node, "from" ); |
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30 | char *type = xt_find_attr( node, "type" ); /* NULL should mean the person is online. */ |
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31 | struct xt_node *c, *cap; |
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32 | struct jabber_buddy *bud, *send_presence = NULL; |
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33 | int is_chat = 0; |
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34 | char *s; |
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35 | |
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36 | if( !from ) |
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37 | return XT_HANDLED; |
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38 | |
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39 | if( ( s = strchr( from, '/' ) ) ) |
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40 | { |
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41 | *s = 0; |
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42 | if( jabber_chat_by_jid( ic, from ) ) |
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43 | is_chat = 1; |
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44 | *s = '/'; |
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45 | } |
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46 | |
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47 | if( type == NULL ) |
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48 | { |
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49 | if( !( bud = jabber_buddy_by_jid( ic, from, GET_BUDDY_EXACT | GET_BUDDY_CREAT ) ) ) |
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50 | { |
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51 | if( set_getbool( &ic->irc->set, "debug" ) ) |
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52 | imcb_log( ic, "Warning: Could not handle presence information from JID: %s", from ); |
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53 | return XT_HANDLED; |
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54 | } |
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55 | |
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56 | g_free( bud->away_message ); |
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57 | if( ( c = xt_find_node( node->children, "status" ) ) && c->text_len > 0 ) |
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58 | bud->away_message = g_strdup( c->text ); |
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59 | else |
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60 | bud->away_message = NULL; |
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61 | |
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62 | if( ( c = xt_find_node( node->children, "show" ) ) && c->text_len > 0 ) |
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63 | { |
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64 | bud->away_state = (void*) jabber_away_state_by_code( c->text ); |
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65 | } |
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66 | else |
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67 | { |
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68 | bud->away_state = NULL; |
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69 | /* Let's only set last_act if there's *no* away state, |
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70 | since it could be some auto-away thingy. */ |
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71 | bud->last_act = time( NULL ); |
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72 | } |
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73 | |
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74 | if( ( c = xt_find_node( node->children, "priority" ) ) && c->text_len > 0 ) |
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75 | bud->priority = atoi( c->text ); |
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76 | else |
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77 | bud->priority = 0; |
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78 | |
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79 | if( bud && ( cap = xt_find_node( node->children, "c" ) ) && |
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80 | ( s = xt_find_attr( cap, "xmlns" ) ) && strcmp( s, XMLNS_CAPS ) == 0 ) |
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81 | { |
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82 | /* This <presence> stanza includes an XEP-0115 |
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83 | capabilities part. Not too interesting, but we can |
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84 | see if it has an ext= attribute. */ |
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85 | s = xt_find_attr( cap, "ext" ); |
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86 | if( s && ( strstr( s, "cstates" ) || strstr( s, "chatstate" ) ) ) |
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87 | bud->flags |= JBFLAG_DOES_XEP85; |
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88 | |
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89 | /* This field can contain more information like xhtml |
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90 | support, but we don't support that ourselves. |
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91 | Officially the ext= tag was deprecated, but enough |
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92 | clients do send it. |
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93 | |
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94 | (I'm aware that this is not the right way to use |
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95 | this field.) See for an explanation of ext=: |
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96 | http://www.xmpp.org/extensions/attic/xep-0115-1.3.html*/ |
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97 | } |
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98 | |
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99 | if( is_chat ) |
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100 | jabber_chat_pkt_presence( ic, bud, node ); |
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101 | else |
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102 | send_presence = jabber_buddy_by_jid( ic, bud->bare_jid, 0 ); |
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103 | } |
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104 | else if( strcmp( type, "unavailable" ) == 0 ) |
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105 | { |
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106 | if( ( bud = jabber_buddy_by_jid( ic, from, 0 ) ) == NULL ) |
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107 | { |
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108 | if( set_getbool( &ic->irc->set, "debug" ) ) |
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109 | imcb_log( ic, "Warning: Received presence information from unknown JID: %s", from ); |
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110 | return XT_HANDLED; |
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111 | } |
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112 | |
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113 | /* Handle this before we delete the JID. */ |
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114 | if( is_chat ) |
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115 | { |
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116 | jabber_chat_pkt_presence( ic, bud, node ); |
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117 | } |
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118 | |
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119 | if( strchr( from, '/' ) == NULL ) |
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120 | /* Sometimes servers send a type="unavailable" from a |
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121 | bare JID, which should mean that suddenly all |
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122 | resources for this JID disappeared. */ |
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123 | jabber_buddy_remove_bare( ic, from ); |
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124 | else |
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125 | jabber_buddy_remove( ic, from ); |
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126 | |
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127 | if( is_chat ) |
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128 | { |
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129 | /* Nothing else to do for now? */ |
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130 | } |
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131 | else if( ( s = strchr( from, '/' ) ) ) |
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132 | { |
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133 | *s = 0; |
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134 | |
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135 | /* If another resource is still available, send its presence |
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136 | information. */ |
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137 | if( ( send_presence = jabber_buddy_by_jid( ic, from, 0 ) ) == NULL ) |
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138 | { |
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139 | /* Otherwise, count him/her as offline now. */ |
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140 | imcb_buddy_status( ic, from, 0, NULL, NULL ); |
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141 | } |
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142 | |
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143 | *s = '/'; |
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144 | } |
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145 | else |
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146 | { |
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147 | imcb_buddy_status( ic, from, 0, NULL, NULL ); |
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148 | } |
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149 | } |
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150 | else if( strcmp( type, "subscribe" ) == 0 ) |
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151 | { |
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152 | jabber_buddy_ask( ic, from ); |
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153 | } |
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154 | else if( strcmp( type, "subscribed" ) == 0 ) |
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155 | { |
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156 | /* Not sure about this one, actually... */ |
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157 | imcb_log( ic, "%s just accepted your authorization request", from ); |
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158 | } |
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159 | else if( strcmp( type, "unsubscribe" ) == 0 || strcmp( type, "unsubscribed" ) == 0 ) |
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160 | { |
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161 | /* Do nothing here. Plenty of control freaks or over-curious |
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162 | souls get excited when they can see who still has them in |
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163 | their buddy list and who finally removed them. Somehow I |
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164 | got the impression that those are the people who get |
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165 | removed from many buddy lists for "some" reason... |
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166 | |
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167 | If you're one of those people, this is your chance to write |
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168 | your first line of code in C... */ |
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169 | } |
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170 | else if( strcmp( type, "error" ) == 0 ) |
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171 | { |
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172 | return jabber_cache_handle_packet( ic, node ); |
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173 | |
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174 | /* |
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175 | struct jabber_error *err; |
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176 | if( ( c = xt_find_node( node->children, "error" ) ) ) |
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177 | { |
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178 | err = jabber_error_parse( c, XMLNS_STANZA_ERROR ); |
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179 | imcb_error( ic, "Stanza (%s) error: %s%s%s", node->name, |
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180 | err->code, err->text ? ": " : "", |
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181 | err->text ? err->text : "" ); |
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182 | jabber_error_free( err ); |
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183 | } */ |
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184 | } |
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185 | |
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186 | if( send_presence ) |
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187 | { |
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188 | int is_away = 0; |
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189 | |
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190 | if( send_presence->away_state && !( *send_presence->away_state->code == 0 || |
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191 | strcmp( send_presence->away_state->code, "chat" ) == 0 ) ) |
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192 | is_away = OPT_AWAY; |
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193 | |
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194 | imcb_buddy_status( ic, send_presence->bare_jid, OPT_LOGGED_IN | is_away, |
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195 | ( is_away && send_presence->away_state ) ? |
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196 | send_presence->away_state->full_name : NULL, |
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197 | send_presence->away_message ); |
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198 | } |
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199 | |
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200 | return XT_HANDLED; |
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201 | } |
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202 | |
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203 | /* Whenever presence information is updated, call this function to inform the |
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204 | server. */ |
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205 | int presence_send_update( struct im_connection *ic ) |
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206 | { |
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207 | struct jabber_data *jd = ic->proto_data; |
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208 | struct xt_node *node, *cap; |
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209 | char *show = jd->away_state->code; |
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210 | char *status = jd->away_message; |
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211 | struct groupchat *c; |
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212 | int st; |
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213 | |
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214 | node = jabber_make_packet( "presence", NULL, NULL, NULL ); |
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215 | xt_add_child( node, xt_new_node( "priority", set_getstr( &ic->acc->set, "priority" ), NULL ) ); |
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216 | if( show && *show ) |
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217 | xt_add_child( node, xt_new_node( "show", show, NULL ) ); |
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218 | if( status ) |
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219 | xt_add_child( node, xt_new_node( "status", status, NULL ) ); |
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220 | |
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221 | /* This makes the packet slightly bigger, but clients interested in |
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222 | capabilities can now cache the discovery info. This reduces the |
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223 | usual post-login iq-flood. See XEP-0115. At least libpurple and |
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224 | Trillian seem to do this right. */ |
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225 | cap = xt_new_node( "c", NULL, NULL ); |
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226 | xt_add_attr( cap, "xmlns", XMLNS_CAPS ); |
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227 | xt_add_attr( cap, "node", "http://bitlbee.org/xmpp/caps" ); |
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228 | xt_add_attr( cap, "ver", BITLBEE_VERSION ); /* The XEP wants this hashed, but nobody's doing that. */ |
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229 | xt_add_child( node, cap ); |
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230 | |
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231 | st = jabber_write_packet( ic, node ); |
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232 | |
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233 | /* Have to send this update to all groupchats too, the server won't |
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234 | do this automatically. */ |
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235 | for( c = ic->groupchats; c && st; c = c->next ) |
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236 | { |
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237 | struct jabber_chat *jc = c->data; |
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238 | |
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239 | xt_add_attr( node, "to", jc->my_full_jid ); |
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240 | st = jabber_write_packet( ic, node ); |
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241 | } |
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242 | |
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243 | xt_free_node( node ); |
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244 | return st; |
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245 | } |
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246 | |
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247 | /* Send a subscribe/unsubscribe request to a buddy. */ |
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248 | int presence_send_request( struct im_connection *ic, char *handle, char *request ) |
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249 | { |
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250 | struct xt_node *node; |
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251 | int st; |
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252 | |
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253 | node = jabber_make_packet( "presence", NULL, NULL, NULL ); |
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254 | xt_add_attr( node, "to", handle ); |
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255 | xt_add_attr( node, "type", request ); |
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256 | |
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257 | st = jabber_write_packet( ic, node ); |
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258 | |
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259 | xt_free_node( node ); |
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260 | return st; |
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261 | } |
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