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1 /* |
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2 * xmpp_helper.c -- Jabber protocol helper functions |
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3 * |
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4 * Copyright (C) 2008-2009 Frank Zschockelt <mcabber@freakysoft.de> |
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5 * Copyright (C) 2005-2009 Mikael Berthe <mikael@lilotux.net> |
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6 * Some parts initially came from the centericq project: |
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7 * Copyright (C) 2002-2005 by Konstantin Klyagin <konst@konst.org.ua> |
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8 * |
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9 * This program is free software; you can redistribute it and/or modify |
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10 * it under the terms of the GNU General Public License as published by |
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11 * the Free Software Foundation; either version 2 of the License, or (at |
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12 * your option) any later version. |
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13 * |
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14 * This program is distributed in the hope that it will be useful, but |
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15 * WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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17 * General Public License for more details. |
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18 * |
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19 * You should have received a copy of the GNU General Public License |
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20 * along with this program; if not, write to the Free Software |
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21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
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22 * USA |
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23 */ |
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24 |
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25 #include "xmpp_helper.h" |
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26 |
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27 time_t iqlast; // last message/status change time |
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28 |
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29 const gchar* lm_message_node_get_child_value(LmMessageNode *node, |
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30 const gchar *child) |
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31 { |
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32 LmMessageNode *tmp; |
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33 tmp = lm_message_node_find_child(node, child); |
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34 if (tmp) |
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35 return lm_message_node_get_value(tmp); |
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36 else return NULL; |
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37 } |
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38 |
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39 static LmMessageNode *hidden = NULL; |
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40 |
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41 void lm_message_node_hide(LmMessageNode *node) |
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42 { |
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43 LmMessageNode *parent = node->parent, *prev_sibling = node->prev; |
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44 |
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45 if (hidden) { |
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46 hidden->children = hidden->next = hidden->prev = hidden->parent = NULL; |
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47 lm_message_node_unref(hidden); |
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48 } |
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49 |
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50 if (parent->children == node) |
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51 parent->children = node->next; |
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52 if (prev_sibling) |
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53 prev_sibling->next = node->next; |
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54 if (node->next) |
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55 node->next->prev = prev_sibling; |
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56 } |
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57 |
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58 //maybe not a good idea, because it uses internals of loudmouth... |
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59 //it's used for rosternotes/bookmarks |
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60 LmMessageNode *lm_message_node_new(const gchar *name, const gchar *xmlns) |
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61 { |
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62 LmMessageNode *node; |
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63 |
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64 node = g_new0 (LmMessageNode, 1); |
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65 node->name = g_strdup (name); |
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66 node->value = NULL; |
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67 node->raw_mode = FALSE; |
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68 node->attributes = NULL; |
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69 node->next = NULL; |
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70 node->prev = NULL; |
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71 node->parent = NULL; |
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72 node->children = NULL; |
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73 |
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74 node->ref_count = 1; |
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75 lm_message_node_set_attribute(node, "xmlns", xmlns); |
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76 return node; |
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77 } |
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78 |
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79 void lm_message_node_insert_childnode(LmMessageNode *node, |
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80 LmMessageNode *child) |
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81 { |
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82 LmMessageNode *x; |
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83 lm_message_node_deep_ref(child); |
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84 |
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85 if (node->children == NULL) |
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86 node->children = child; |
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87 else { |
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88 for (x = node->children; x->next; x = x->next) |
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89 ; |
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90 x->next = child; |
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91 } |
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92 } |
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93 |
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94 void lm_message_node_deep_ref(LmMessageNode *node) |
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95 { |
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96 if (node == NULL) |
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97 return; |
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98 lm_message_node_ref(node); |
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99 lm_message_node_deep_ref(node->next); |
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100 lm_message_node_deep_ref(node->children); |
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101 } |
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102 |
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103 const gchar* lm_message_get_from(LmMessage *m) |
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104 { |
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105 return lm_message_node_get_attribute(m->node, "from"); |
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106 } |
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107 |
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108 const gchar* lm_message_get_id(LmMessage *m) |
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109 { |
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110 return lm_message_node_get_attribute(m->node, "id"); |
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111 } |
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112 |
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113 static LmMessage *lm_message_new_iq_from_query(LmMessage *m, |
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114 LmMessageSubType type) |
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115 { |
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116 LmMessage *new; |
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117 const char *from = lm_message_node_get_attribute(m->node, "from"); |
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118 const char *id = lm_message_node_get_attribute(m->node, "id"); |
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119 |
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120 new = lm_message_new_with_sub_type(from, LM_MESSAGE_TYPE_IQ, |
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121 type); |
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122 if (id) |
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123 lm_message_node_set_attribute(new->node, "id", id); |
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124 |
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125 return new; |
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126 } |
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127 |
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128 // entity_version(enum imstatus status) |
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129 // Return a static version string for Entity Capabilities. |
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130 // It should be specific to the client version, please change the id |
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131 // if you alter mcabber's disco support (or add something to the version |
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132 // number) so that it doesn't conflict with the official client. |
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133 const char *entity_version(enum imstatus status) |
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134 { |
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135 static char *ver, *ver_notavail; |
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136 |
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137 if (ver && (status != notavail)) |
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138 return ver; |
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139 if (ver_notavail) |
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140 return ver_notavail; |
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141 |
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142 caps_add(""); |
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143 caps_set_identity("", "client", PACKAGE_STRING, "pc"); |
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144 caps_add_feature("", NS_DISCO_INFO); |
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145 caps_add_feature("", NS_MUC); |
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146 // advertise ChatStates only if they aren't disabled |
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147 if (!settings_opt_get_int("disable_chatstates")) |
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148 caps_add_feature("", NS_CHATSTATES); |
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149 caps_add_feature("", NS_TIME); |
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150 caps_add_feature("", NS_XMPP_TIME); |
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151 caps_add_feature("", NS_VERSION); |
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152 caps_add_feature("", NS_PING); |
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153 caps_add_feature("", NS_COMMANDS); |
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154 if (!settings_opt_get_int("iq_last_disable") && |
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155 (!settings_opt_get_int("iq_last_disable_when_notavail") || |
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156 status != notavail)) |
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157 caps_add_feature("", NS_LAST); |
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158 |
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159 if (status == notavail) { |
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160 ver_notavail = caps_generate(); |
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161 return ver_notavail; |
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162 } |
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163 |
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164 ver = caps_generate(); |
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165 return ver; |
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166 } |
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167 |
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168 inline static LmMessageNode *lm_message_node_find_xmlns(LmMessageNode *node, |
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169 const char *xmlns) |
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170 { |
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171 LmMessageNode *x; |
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172 const char *p; |
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173 |
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174 for (x = node->children ; x; x = x->next) { |
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175 if ((p = lm_message_node_get_attribute(x, "xmlns")) && !strcmp(p, xmlns)) |
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176 break; |
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177 } |
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178 return x; |
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179 } |
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180 |
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181 static time_t lm_message_node_get_timestamp(LmMessageNode *node) |
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182 { |
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183 LmMessageNode *x; |
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184 const char *p; |
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185 |
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186 x = lm_message_node_find_xmlns(node, NS_XMPP_DELAY); |
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187 if (x && (!strcmp(x->name, "delay")) && |
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188 (p = lm_message_node_get_attribute(x, "stamp")) != NULL) |
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189 return from_iso8601(p, 1); |
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190 x = lm_message_node_find_xmlns(node, NS_DELAY); |
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191 if (x && (p = lm_message_node_get_attribute(x, "stamp")) != NULL) |
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192 return from_iso8601(p, 1); |
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193 return 0; |
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194 } |
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195 |
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196 // lm_message_new_presence(status, recipient, message) |
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197 // Create an xmlnode with default presence attributes |
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198 // Note: the caller must free the node after use |
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199 static LmMessage *lm_message_new_presence(enum imstatus st, |
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200 const char *recipient, |
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201 const char *msg) |
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202 { |
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203 unsigned int prio; |
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204 LmMessage *x = lm_message_new(recipient, LM_MESSAGE_TYPE_PRESENCE); |
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205 |
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206 switch(st) { |
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207 case away: |
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208 case notavail: |
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209 case dontdisturb: |
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210 case freeforchat: |
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211 lm_message_node_add_child(x->node, "show", imstatus_showmap[st]); |
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212 break; |
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213 |
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214 case invisible: |
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215 lm_message_node_set_attribute(x->node, "type", "invisible"); |
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216 break; |
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217 |
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218 case offline: |
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219 lm_message_node_set_attribute(x->node, "type", "unavailable"); |
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220 break; |
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221 |
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222 default: |
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223 break; |
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224 } |
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225 |
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226 if (st == away || st == notavail) |
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227 prio = settings_opt_get_int("priority_away"); |
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228 else |
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229 prio = settings_opt_get_int("priority"); |
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230 |
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231 if (prio) { |
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232 char strprio[8]; |
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233 snprintf(strprio, 8, "%d", (int)prio); |
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234 lm_message_node_add_child(x->node, "priority", strprio); |
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235 } |
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236 |
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237 if (msg) |
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238 lm_message_node_add_child(x->node, "status", msg); |
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239 |
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240 return x; |
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241 } |
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242 |
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243 static const char *defaulterrormsg(guint code) |
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244 { |
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245 int i = 0; |
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246 |
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247 for (i = 0; xmpp_errors[i].code; ++i) { |
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248 if (xmpp_errors[i].code == code) |
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249 return xmpp_errors[i].meaning; |
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250 } |
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251 return NULL; |
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252 } |
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253 |
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254 // display_server_error(x) |
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255 // Display the error to the user |
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256 // x: error tag xmlnode pointer |
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257 void display_server_error(LmMessageNode *x) |
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258 { |
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259 const char *desc = NULL, *p=NULL, *s; |
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260 char *sdesc, *tmp; |
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261 int code = 0; |
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262 |
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263 if (!x) return; |
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264 |
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265 /* RFC3920: |
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266 * The <error/> element: |
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267 * o MUST contain a child element corresponding to one of the defined |
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268 * stanza error conditions specified below; this element MUST be |
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269 * qualified by the 'urn:ietf:params:xml:ns:xmpp-stanzas' namespace. |
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270 */ |
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271 if (x->children) |
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272 p = x->children->name; |
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273 if (p) |
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274 scr_LogPrint(LPRINT_LOGNORM, "Received error packet [%s]", p); |
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275 |
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276 // For backward compatibility |
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277 if ((s = lm_message_node_get_attribute(x, "code")) != NULL) { |
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278 code = atoi(s); |
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279 // Default message |
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280 desc = defaulterrormsg(code); |
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281 } |
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282 |
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283 // Error tag data is better, if available |
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284 s = lm_message_node_get_value(x); |
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285 if (s && *s) desc = s; |
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286 |
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287 // And sometimes there is a text message |
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288 s = lm_message_node_get_child_value(x, "text"); |
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289 |
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290 if (s && *s) desc = s; |
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291 |
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292 // If we still have no description, let's give up |
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293 if (!desc) |
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294 return; |
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295 |
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296 // Strip trailing newlines |
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297 sdesc = g_strdup(desc); |
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298 for (tmp = sdesc; *tmp; tmp++) ; |
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299 if (tmp > sdesc) |
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300 tmp--; |
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301 while (tmp >= sdesc && (*tmp == '\n' || *tmp == '\r')) |
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302 *tmp-- = '\0'; |
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303 |
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304 scr_LogPrint(LPRINT_LOGNORM, "Error code from server: %d %s", code, sdesc); |
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305 g_free(sdesc); |
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306 } |
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307 |
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308 /* vim: set expandtab cindent cinoptions=>2\:2(0: For Vim users... */ |
