1 | /********************************************************************\ |
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2 | * BitlBee -- An IRC to other IM-networks gateway * |
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3 | * * |
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4 | * Copyright 2002-2013 Wilmer van der Gaast and others * |
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5 | \********************************************************************/ |
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6 | |
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7 | /* Some stuff to register, handle and save user preferences */ |
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8 | |
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9 | /* |
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10 | This program is free software; you can redistribute it and/or modify |
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11 | it under the terms of the GNU General Public License as published by |
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12 | the Free Software Foundation; either version 2 of the License, or |
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13 | (at your option) any later version. |
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14 | |
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15 | This program is distributed in the hope that it will be useful, |
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16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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18 | GNU General Public License for more details. |
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19 | |
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20 | You should have received a copy of the GNU General Public License with |
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21 | the Debian GNU/Linux distribution in /usr/share/common-licenses/GPL; |
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22 | if not, write to the Free Software Foundation, Inc., 51 Franklin St., |
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23 | Fifth Floor, Boston, MA 02110-1301 USA |
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24 | */ |
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25 | |
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26 | #define BITLBEE_CORE |
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27 | #include "bitlbee.h" |
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28 | |
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29 | /* Used to use NULL for this, but NULL is actually a "valid" value. */ |
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30 | char *SET_INVALID = "nee"; |
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31 | |
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32 | set_t *set_add(set_t **head, const char *key, const char *def, set_eval eval, void *data) |
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33 | { |
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34 | set_t *s = set_find(head, key); |
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35 | |
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36 | /* Possibly the setting already exists. If it doesn't exist yet, |
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37 | we create it. If it does, we'll just change the default. */ |
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38 | if (!s) { |
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39 | if ((s = *head)) { |
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40 | /* Sorted insertion. Special-case insertion at the start. */ |
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41 | if (strcmp(key, s->key) < 0) { |
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42 | s = g_new0(set_t, 1); |
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43 | s->next = *head; |
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44 | *head = s; |
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45 | } else { |
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46 | while (s->next && strcmp(key, s->next->key) > 0) { |
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47 | s = s->next; |
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48 | } |
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49 | set_t *last_next = s->next; |
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50 | s->next = g_new0(set_t, 1); |
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51 | s = s->next; |
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52 | s->next = last_next; |
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53 | } |
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54 | } else { |
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55 | s = *head = g_new0(set_t, 1); |
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56 | } |
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57 | s->key = g_strdup(key); |
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58 | } |
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59 | |
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60 | if (s->def) { |
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61 | g_free(s->def); |
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62 | s->def = NULL; |
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63 | } |
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64 | if (def) { |
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65 | s->def = g_strdup(def); |
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66 | } |
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67 | |
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68 | s->eval = eval; |
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69 | s->data = data; |
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70 | |
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71 | return s; |
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72 | } |
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73 | |
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74 | set_t *set_find(set_t **head, const char *key) |
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75 | { |
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76 | set_t *s = *head; |
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77 | |
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78 | while (s) { |
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79 | if (g_strcasecmp(s->key, key) == 0 || |
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80 | (s->old_key && g_strcasecmp(s->old_key, key) == 0)) { |
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81 | break; |
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82 | } |
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83 | s = s->next; |
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84 | } |
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85 | |
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86 | return s; |
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87 | } |
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88 | |
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89 | char *set_getstr(set_t **head, const char *key) |
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90 | { |
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91 | set_t *s = set_find(head, key); |
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92 | |
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93 | if (!s || (!s->value && !s->def)) { |
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94 | return NULL; |
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95 | } |
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96 | |
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97 | return set_value(s); |
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98 | } |
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99 | |
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100 | int set_getint(set_t **head, const char *key) |
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101 | { |
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102 | char *s = set_getstr(head, key); |
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103 | int i = 0; |
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104 | |
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105 | if (!s) { |
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106 | return 0; |
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107 | } |
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108 | |
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109 | if (sscanf(s, "%d", &i) != 1) { |
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110 | return 0; |
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111 | } |
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112 | |
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113 | return i; |
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114 | } |
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115 | |
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116 | int set_getbool(set_t **head, const char *key) |
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117 | { |
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118 | char *s = set_getstr(head, key); |
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119 | |
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120 | if (!s) { |
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121 | return 0; |
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122 | } |
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123 | |
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124 | return bool2int(s); |
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125 | } |
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126 | |
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127 | int set_isvisible(set_t *set) |
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128 | { |
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129 | /* the default value is not stored in value, only in def */ |
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130 | return !((set->flags & SET_HIDDEN) || |
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131 | ((set->flags & SET_HIDDEN_DEFAULT) && |
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132 | (set->value == NULL))); |
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133 | } |
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134 | |
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135 | int set_setstr(set_t **head, const char *key, char *value) |
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136 | { |
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137 | set_t *s = set_find(head, key); |
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138 | char *nv = value; |
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139 | |
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140 | if (!s) { |
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141 | /* |
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142 | Used to do this, but it never really made sense. |
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143 | s = set_add( head, key, NULL, NULL, NULL ); |
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144 | */ |
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145 | return 0; |
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146 | } |
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147 | |
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148 | if (value == NULL && (s->flags & SET_NULL_OK) == 0) { |
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149 | return 0; |
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150 | } |
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151 | |
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152 | /* Call the evaluator. For invalid values, evaluators should now |
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153 | return SET_INVALID, but previously this was NULL. Try to handle |
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154 | that too if NULL is not an allowed value for this setting. */ |
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155 | if (s->eval && ((nv = s->eval(s, value)) == SET_INVALID || |
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156 | ((s->flags & SET_NULL_OK) == 0 && nv == NULL))) { |
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157 | return 0; |
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158 | } |
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159 | |
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160 | if (s->value) { |
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161 | g_free(s->value); |
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162 | s->value = NULL; |
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163 | } |
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164 | |
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165 | /* If there's a default setting and it's equal to what we're trying to |
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166 | set, stick with s->value = NULL. Otherwise, remember the setting. */ |
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167 | if (!s->def || (strcmp(nv, s->def) != 0)) { |
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168 | s->value = g_strdup(nv); |
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169 | } |
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170 | |
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171 | if (nv != value) { |
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172 | g_free(nv); |
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173 | } |
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174 | |
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175 | return 1; |
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176 | } |
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177 | |
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178 | int set_setint(set_t **head, const char *key, int value) |
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179 | { |
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180 | char *s = g_strdup_printf("%d", value); |
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181 | int retval = set_setstr(head, key, s); |
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182 | |
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183 | g_free(s); |
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184 | return retval; |
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185 | } |
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186 | |
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187 | void set_del(set_t **head, const char *key) |
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188 | { |
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189 | set_t *s = *head, *t = NULL; |
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190 | |
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191 | while (s) { |
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192 | if (g_strcasecmp(s->key, key) == 0) { |
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193 | break; |
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194 | } |
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195 | s = (t = s)->next; |
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196 | } |
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197 | if (s) { |
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198 | if (t) { |
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199 | t->next = s->next; |
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200 | } else { |
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201 | *head = s->next; |
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202 | } |
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203 | |
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204 | g_free(s->key); |
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205 | g_free(s->old_key); |
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206 | g_free(s->value); |
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207 | g_free(s->def); |
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208 | g_free(s); |
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209 | } |
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210 | } |
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211 | |
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212 | int set_reset(set_t **head, const char *key) |
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213 | { |
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214 | set_t *s; |
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215 | |
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216 | s = set_find(head, key); |
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217 | if (s) { |
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218 | return set_setstr(head, key, s->def); |
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219 | } |
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220 | |
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221 | return 0; |
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222 | } |
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223 | |
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224 | char *set_eval_int(set_t *set, char *value) |
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225 | { |
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226 | char *s = value; |
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227 | |
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228 | /* Allow a minus at the first position. */ |
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229 | if (*s == '-') { |
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230 | s++; |
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231 | } |
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232 | |
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233 | for (; *s; s++) { |
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234 | if (!g_ascii_isdigit(*s)) { |
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235 | return SET_INVALID; |
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236 | } |
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237 | } |
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238 | |
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239 | return value; |
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240 | } |
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241 | |
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242 | char *set_eval_bool(set_t *set, char *value) |
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243 | { |
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244 | return is_bool(value) ? value : SET_INVALID; |
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245 | } |
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246 | |
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247 | char *set_eval_list(set_t *set, char *value) |
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248 | { |
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249 | GSList *options = set->eval_data, *opt; |
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250 | |
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251 | for (opt = options; opt; opt = opt->next) { |
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252 | if (strcmp(value, opt->data) == 0) { |
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253 | return value; |
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254 | } |
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255 | } |
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256 | |
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257 | /* TODO: It'd be nice to show the user a list of allowed values, |
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258 | but we don't have enough context here to do that. May |
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259 | want to fix that. */ |
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260 | |
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261 | return NULL; |
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262 | } |
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263 | |
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264 | char *set_eval_to_char(set_t *set, char *value) |
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265 | { |
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266 | char *s = g_new(char, 3); |
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267 | |
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268 | if (*value == ' ') { |
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269 | strcpy(s, " "); |
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270 | } else { |
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271 | sprintf(s, "%c ", *value); |
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272 | } |
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273 | |
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274 | return s; |
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275 | } |
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276 | |
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277 | char *set_eval_oauth(set_t *set, char *value) |
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278 | { |
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279 | account_t *acc = set->data; |
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280 | |
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281 | if (bool2int(value) && strcmp(acc->pass, PASSWORD_PENDING) == 0) { |
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282 | *acc->pass = '\0'; |
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283 | } |
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284 | |
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285 | return set_eval_bool(set, value); |
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286 | } |
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