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1 /* |
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2 * roster.c -- Local roster implementation |
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3 * |
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4 * Copyright (C) 2005 Mikael Berthe <bmikael@lists.lilotux.net> |
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5 * |
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6 * This program is free software; you can redistribute it and/or modify |
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7 * it under the terms of the GNU General Public License as published by |
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8 * the Free Software Foundation; either version 2 of the License, or (at |
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9 * your option) any later version. |
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10 * |
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11 * This program is distributed in the hope that it will be useful, but |
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12 * WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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14 * General Public License for more details. |
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15 * |
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16 * You should have received a copy of the GNU General Public License |
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17 * along with this program; if not, write to the Free Software |
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18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
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19 * USA |
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20 */ |
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21 |
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22 #include <string.h> |
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23 |
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24 #include "roster.h" |
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25 |
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26 |
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27 /* This is a private structure type for the roster */ |
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28 |
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29 typedef struct { |
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30 const char *name; |
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31 const char *jid; |
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32 guint type; |
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33 enum imstatus status; |
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34 guint flags; |
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35 // list: user -> points to his group; group -> points to its users list |
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36 GSList *list; |
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37 } roster; |
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38 |
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39 |
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40 /* ### Variables ### */ |
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41 |
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42 static int hide_offline_buddies; |
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43 static GSList *groups; |
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44 GList *buddylist; |
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45 GList *current_buddy; |
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46 |
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47 #ifdef MCABBER_TESTUNIT |
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48 // Export groups for testing routines |
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49 GSList **pgroups = &groups; |
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50 #endif |
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51 |
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52 |
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53 /* ### Roster functions ### */ |
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54 |
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55 // Comparison function used to search in the roster (compares jids and types) |
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56 gint roster_compare_jid_type(roster *a, roster *b) { |
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57 if (a->type != b->type) |
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58 return -1; // arbitrary (but should be != , of course) |
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59 return strcasecmp(a->jid, b->jid); |
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60 } |
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61 |
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62 // Comparison function used to sort the roster (by name) |
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63 gint roster_compare_name(roster *a, roster *b) { |
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64 return strcasecmp(a->name, b->name); |
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65 } |
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66 |
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67 // Finds a roster element (user, group, agent...), by jid or name |
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68 // Returns the roster GSList element, or NULL if jid/name not found |
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69 GSList *roster_find(const char *jidname, enum findwhat type, guint roster_type) |
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70 { |
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71 GSList *sl_roster_elt = groups; |
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72 GSList *res; |
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73 roster sample; |
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74 GCompareFunc comp; |
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75 |
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76 if (!jidname) |
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77 return NULL; // should not happen |
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78 |
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79 sample.type = roster_type; |
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80 if (type == jidsearch) { |
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81 sample.jid = jidname; |
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82 comp = (GCompareFunc)&roster_compare_jid_type; |
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83 } else if (type == namesearch) { |
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84 sample.name = jidname; |
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85 comp = (GCompareFunc)&roster_compare_name; |
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86 } else |
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87 return NULL; // should not happen |
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88 |
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89 while (sl_roster_elt) { |
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90 roster *roster_elt = (roster*)sl_roster_elt->data; |
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91 if (roster_type & ROSTER_TYPE_GROUP) { |
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92 if ((type == namesearch) && !strcasecmp(jidname, roster_elt->name)) |
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93 return sl_roster_elt; |
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94 } else { |
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95 res = g_slist_find_custom(roster_elt->list, &sample, comp); |
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96 if (res) |
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97 return res; |
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98 } |
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99 sl_roster_elt = g_slist_next(sl_roster_elt); |
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100 } |
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101 return NULL; |
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102 } |
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103 |
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104 // Returns pointer to new group, or existing group with that name |
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105 GSList *roster_add_group(const char *name) |
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106 { |
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107 roster *roster_grp; |
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108 // #1 Check name doesn't already exist |
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109 if (!roster_find(name, namesearch, ROSTER_TYPE_GROUP)) { |
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110 // #2 Create the group node |
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111 roster_grp = g_new0(roster, 1); |
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112 roster_grp->name = g_strdup(name); |
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113 roster_grp->type = ROSTER_TYPE_GROUP; |
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114 // #3 Insert (sorted) |
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115 groups = g_slist_insert_sorted(groups, roster_grp, |
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116 (GCompareFunc)&roster_compare_name); |
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117 } |
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118 return roster_find(name, namesearch, ROSTER_TYPE_GROUP); |
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119 } |
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120 |
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121 // Returns a pointer to the new user, or existing user with that name |
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122 GSList *roster_add_user(const char *jid, const char *name, const char *group, |
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123 guint type) |
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124 { |
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125 roster *roster_usr; |
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126 roster *my_group; |
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127 GSList *slist; |
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128 |
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129 if ((type != ROSTER_TYPE_USER) && (type != ROSTER_TYPE_AGENT)) { |
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130 // XXX Error message? |
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131 return NULL; |
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132 } |
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133 |
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134 // Let's be arbitrary: default group has an empty name (""). |
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135 if (!group) group = ""; |
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136 |
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137 // #1 Check this user doesn't already exist |
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138 if ((slist = roster_find(jid, jidsearch, type)) != NULL) |
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139 return slist; |
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140 // #2 add group if necessary |
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141 slist = roster_add_group(group); |
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142 if (!slist) return NULL; |
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143 my_group = (roster*)slist->data; |
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144 // #3 Create user node |
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145 roster_usr = g_new0(roster, 1); |
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146 roster_usr->jid = g_strdup(jid); |
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147 if (name) { |
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148 roster_usr->name = g_strdup(name); |
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149 } else { |
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150 gchar *p, *str = g_strdup(jid); |
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151 p = strstr(str, "/"); |
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152 if (p) *p = '\0'; |
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153 roster_usr->name = g_strdup(str); |
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154 g_free(str); |
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155 } |
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156 roster_usr->type = type; //ROSTER_TYPE_USER; |
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157 roster_usr->list = slist; // (my_group SList element) |
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158 // #4 Insert node (sorted) |
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159 my_group->list = g_slist_insert_sorted(my_group->list, roster_usr, |
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160 (GCompareFunc)&roster_compare_name); |
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161 return roster_find(jid, jidsearch, type); |
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162 } |
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163 |
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164 // Removes user (jid) from roster, frees allocated memory |
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165 void roster_del_user(const char *jid) |
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166 { |
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167 GSList *sl_user, *sl_group; |
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168 GSList **sl_group_listptr; |
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169 roster *roster_usr; |
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170 |
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171 if ((sl_user = roster_find(jid, jidsearch, ROSTER_TYPE_USER)) == NULL) |
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172 return; |
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173 // Let's free memory (jid, name) |
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174 roster_usr = (roster*)sl_user->data; |
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175 if (roster_usr->jid) |
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176 g_free((gchar*)roster_usr->jid); |
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177 if (roster_usr->name) |
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178 g_free((gchar*)roster_usr->name); |
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179 |
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180 // That's a little complex, we need to dereference twice |
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181 sl_group = ((roster*)sl_user->data)->list; |
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182 sl_group_listptr = &((roster*)(sl_group->data))->list; |
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183 *sl_group_listptr = g_slist_delete_link(*sl_group_listptr, sl_user); |
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184 |
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185 // We need to rebuild the list |
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186 if (current_buddy) |
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187 buddylist_build(); |
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188 // TODO What we should do, too, is to check if the deleted node is |
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189 // current_buddy, in which case we could move current_buddy to the |
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190 // previous (or next) node. |
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191 } |
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192 |
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193 void roster_setstatus(const char *jid, enum imstatus bstat) |
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194 { |
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195 GSList *sl_user; |
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196 roster *roster_usr; |
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197 |
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198 if ((sl_user = roster_find(jid, jidsearch, ROSTER_TYPE_USER)) == NULL) |
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199 return; |
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200 |
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201 roster_usr = (roster*)sl_user->data; |
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202 roster_usr->status = bstat; |
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203 } |
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204 |
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205 // roster_setflags() |
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206 // Set one or several flags to value (TRUE/FALSE) |
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207 void roster_setflags(const char *jid, guint flags, guint value) |
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208 { |
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209 GSList *sl_user; |
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210 roster *roster_usr; |
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211 |
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212 if ((sl_user = roster_find(jid, jidsearch, ROSTER_TYPE_USER)) == NULL) |
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213 return; |
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214 |
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215 roster_usr = (roster*)sl_user->data; |
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216 if (value) |
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217 roster_usr->flags |= flags; |
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218 else |
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219 roster_usr->flags &= ~flags; |
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220 } |
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221 |
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222 // char *roster_getgroup(...) / Or *GSList? Which use?? |
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223 // ... setgroup(char*) ?? |
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224 // guint roster_gettype(...) / settype |
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225 // guchar roster_getflags(...) |
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226 // guchar roster_getname(...) / setname ?? |
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227 // roster_del_group? |
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228 |
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229 |
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230 /* ### BuddyList functions ### */ |
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231 |
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232 // buddylist_hide_offline_buddies(hide) |
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233 // "hide" values: 1=hide 0=show_all -1=invert |
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234 void buddylist_hide_offline_buddies(int hide) |
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235 { |
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236 if (hide < 0) // NEG (invert) |
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237 hide_offline_buddies = !hide_offline_buddies; |
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238 else if (hide == 0) // FALSE (don't hide) |
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239 hide_offline_buddies = 0; |
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240 else // TRUE (hide) |
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241 hide_offline_buddies = 1; |
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242 } |
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243 |
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244 // buddylist_build() |
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245 // Creates the buddylist from the roster entries. |
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246 void buddylist_build(void) |
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247 { |
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248 GSList *sl_roster_elt = groups; |
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249 roster *roster_elt; |
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250 int pending_group; |
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251 |
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252 // Destroy old buddylist |
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253 if (buddylist) { |
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254 g_list_free(buddylist); |
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255 buddylist = NULL; |
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256 } |
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257 |
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258 // Create the new list |
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259 while (sl_roster_elt) { |
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260 GSList *sl_roster_usrelt; |
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261 roster *roster_usrelt; |
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262 roster_elt = (roster*) sl_roster_elt->data; |
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263 |
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264 // Add the group now unless hide_offline_buddies is set, |
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265 // in which case we'll add it only if an online buddy belongs to it. |
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266 if (!hide_offline_buddies) |
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267 buddylist = g_list_append(buddylist, roster_elt); |
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268 else |
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269 pending_group = TRUE; |
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270 |
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271 sl_roster_usrelt = roster_elt->list; |
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272 while (sl_roster_usrelt) { |
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273 roster_usrelt = (roster*) sl_roster_usrelt->data; |
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274 |
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275 // Buddy will be added if either: |
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276 // - hide_offline_buddies is FALSE |
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277 // - buddy is not offline |
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278 // - buddy has a lock (for example the buddy window is currently open) |
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279 // - buddy has a pending (non-read) message |
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280 if (!hide_offline_buddies || |
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281 (buddy_getstatus((gpointer)roster_usrelt) != offline) || |
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282 (buddy_getflags((gpointer)roster_usrelt) & |
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283 (ROSTER_FLAG_LOCK | ROSTER_FLAG_MSG))) { |
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284 // This user should be added. Maybe the group hasn't been added yet? |
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285 if (hide_offline_buddies && pending_group) { |
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286 // It hasn't been done yet |
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287 buddylist = g_list_append(buddylist, roster_elt); |
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288 pending_group = FALSE; |
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289 } |
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290 // Add user |
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291 buddylist = g_list_append(buddylist, roster_usrelt); |
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292 } |
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293 |
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294 sl_roster_usrelt = g_slist_next(sl_roster_usrelt); |
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295 } |
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296 sl_roster_elt = g_slist_next(sl_roster_elt); |
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297 } |
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298 |
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299 // current_buddy initialization |
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300 if (!current_buddy || (g_list_position(buddylist, current_buddy) == -1)) |
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301 current_buddy = buddylist; |
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302 } |
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303 |
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304 // buddy_hide_group(roster, hide) |
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305 // "hide" values: 1=hide 0=show_all -1=invert |
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306 void buddy_hide_group(gpointer rosterdata, int hide) |
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307 { |
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308 roster *roster = rosterdata; |
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309 if (hide > 0) // TRUE (hide) |
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310 roster->flags |= ROSTER_FLAG_HIDE; |
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311 else if (hide < 0) // NEG (invert) |
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312 roster->flags ^= ROSTER_FLAG_HIDE; |
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313 else // FALSE (don't hide) |
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314 roster->flags &= ~ROSTER_FLAG_HIDE; |
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315 } |
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316 |
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317 const char *buddy_getjid(gpointer rosterdata) |
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318 { |
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319 roster *roster = rosterdata; |
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320 return roster->jid; |
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321 } |
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322 |
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323 const char *buddy_getname(gpointer rosterdata) |
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324 { |
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325 roster *roster = rosterdata; |
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326 return roster->name; |
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327 } |
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328 |
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329 guint buddy_gettype(gpointer rosterdata) |
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330 { |
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331 roster *roster = rosterdata; |
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332 return roster->type; |
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333 } |
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334 |
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335 enum imstatus buddy_getstatus(gpointer rosterdata) |
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336 { |
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337 roster *roster = rosterdata; |
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338 return roster->status; |
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339 } |
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340 |
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341 guint buddy_getflags(gpointer rosterdata) |
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342 { |
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343 roster *roster = rosterdata; |
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344 return roster->flags; |
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345 } |
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346 |
