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1 | <?php |
2 | |
3 | /** |
4 | * file_prefs.php |
5 | * |
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6 | * This contains functions for manipulating user preferences in files |
7 | * |
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8 | * @copyright © 1999-2007 The SquirrelMail Project Team |
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9 | * @license http://opensource.org/licenses/gpl-license.php GNU Public License |
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10 | * @version $Id$ |
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11 | * @package squirrelmail |
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12 | * @subpackage prefs |
13 | * @since 1.2.5 |
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14 | */ |
15 | |
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16 | |
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17 | /** |
18 | * Check the preferences into the session cache. |
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19 | * |
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20 | * @param string $data_dir |
21 | * @param string $username |
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22 | * |
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23 | * @since 1.1.3 |
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24 | * |
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25 | */ |
26 | function cachePrefValues($data_dir, $username) { |
27 | global $prefs_are_cached, $prefs_cache; |
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28 | |
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29 | sqgetGlobalVar('prefs_are_cached', $prefs_are_cached, SQ_SESSION ); |
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30 | if ( isset($prefs_are_cached) && $prefs_are_cached) { |
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31 | sqgetGlobalVar('prefs_cache', $prefs_cache, SQ_SESSION ); |
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32 | // sm_print_r($prefs_cache); |
33 | // exit; |
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34 | return; |
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35 | } |
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36 | |
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37 | sqsession_unregister('prefs_cache'); |
38 | sqsession_unregister('prefs_are_cached'); |
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39 | |
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40 | /* Calculate the filename for the user's preference file */ |
41 | $filename = getHashedFile($username, $data_dir, "$username.pref"); |
42 | |
43 | /* A call to checkForPrefs here should take eliminate the need for */ |
44 | /* this to be called throughout the rest of the SquirrelMail code. */ |
45 | checkForPrefs($data_dir, $username, $filename); |
46 | |
47 | /* Make sure that the preference file now DOES exist. */ |
48 | if (!file_exists($filename)) { |
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49 | logout_error( sprintf( _("Preference file, %s, does not exist. Log out, and log back in to create a default preference file."), $filename) ); |
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50 | exit; |
51 | } |
52 | |
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53 | /* Open the file, or else display an error to the user. */ |
54 | if(!$file = @fopen($filename, 'r')) |
55 | { |
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56 | logout_error( sprintf( _("Preference file, %s, could not be opened. Contact your system administrator to resolve this issue."), $filename) ); |
57 | exit; |
58 | } |
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59 | |
60 | /* Read in the preferences. */ |
61 | $highlight_num = 0; |
62 | while (! feof($file)) { |
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63 | $pref = ''; |
64 | /* keep reading a pref until we reach an eol (\n (or \r for macs)) */ |
65 | while($read = fgets($file, 1024)) |
66 | { |
67 | $pref .= $read; |
68 | if(strpos($read,"\n") || strpos($read,"\r")) |
69 | break; |
70 | } |
71 | $pref = trim($pref); |
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72 | $equalsAt = strpos($pref, '='); |
73 | if ($equalsAt > 0) { |
74 | $key = substr($pref, 0, $equalsAt); |
75 | $value = substr($pref, $equalsAt + 1); |
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76 | |
77 | //FIXME: this code is not in db_prefs.php that I can see |
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78 | /* this is to 'rescue' old-style highlighting rules. */ |
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79 | if (substr($key, 0, 9) == 'highlight') { |
80 | $key = 'highlight' . $highlight_num; |
81 | $highlight_num ++; |
82 | } |
83 | |
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84 | //FIXME: this code is not in db_prefs.php that I can see |
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85 | if ($value != '') { |
86 | $prefs_cache[$key] = $value; |
87 | } |
88 | } |
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89 | } |
90 | fclose($file); |
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91 | |
92 | $prefs_are_cached = TRUE; |
93 | |
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94 | sqsession_register($prefs_cache, 'prefs_cache'); |
95 | sqsession_register($prefs_are_cached, 'prefs_are_cached'); |
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96 | } |
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97 | |
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98 | /** |
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99 | * Return the value for the desired preference. |
100 | * |
101 | * @param string $data_dir data directory |
102 | * @param string $username user name |
103 | * @param string $pref_name preference name |
104 | * @param string $default (since 1.2.0) default preference value |
105 | * |
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106 | * @return mixed |
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107 | * |
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108 | */ |
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109 | function getPref($data_dir, $username, $pref_name, $default = '') { |
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110 | global $prefs_cache; |
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111 | |
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112 | $temp = array(&$username, &$pref_name); |
113 | $result = do_hook('get_pref_override', $temp); |
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114 | if (!$result) { |
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115 | cachePrefValues($data_dir, $username); |
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116 | if (isset($prefs_cache[$pref_name])) { |
117 | $result = $prefs_cache[$pref_name]; |
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118 | } else { |
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119 | $temp = array(&$username, &$pref_name); |
120 | $result = do_hook('get_pref', $temp); |
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121 | if (!$result) { |
122 | $result = $default; |
123 | } |
124 | } |
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125 | } |
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126 | return ($result); |
127 | } |
128 | |
129 | /** |
130 | * Save the preferences for this user. |
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131 | * |
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132 | * @param string $data_dir data directory |
133 | * @param string $username user name |
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134 | * |
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135 | * @since 1.1.3 |
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136 | * |
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137 | */ |
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138 | function savePrefValues($data_dir, $username) { |
139 | global $prefs_cache; |
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140 | |
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141 | $filename = getHashedFile($username, $data_dir, "$username.pref"); |
142 | |
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143 | /* Open the file for writing, or else display an error to the user. */ |
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144 | if(!$file = @fopen($filename.'.tmp', 'w')) |
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145 | { |
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146 | logout_error( sprintf( _("Preference file, %s, could not be opened. Contact your system administrator to resolve this issue."), $filename.'.tmp') ); |
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147 | exit; |
148 | } |
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149 | foreach ($prefs_cache as $Key => $Value) { |
150 | if (isset($Value)) { |
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151 | if ( sq_fwrite($file, $Key . '=' . $Value . "\n") === FALSE ) { |
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152 | logout_error( sprintf( _("Preference file, %s, could not be written. Contact your system administrator to resolve this issue.") , $filename . '.tmp') ); |
153 | exit; |
154 | } |
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155 | } |
156 | } |
157 | fclose($file); |
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158 | if (! @copy($filename . '.tmp',$filename) ) { |
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159 | logout_error( sprintf( _("Preference file, %s, could not be copied from temporary file, %s. Contact your system administrator to resolve this issue."), $filename, $filename . '.tmp') ); |
160 | exit; |
161 | } |
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162 | @unlink($filename . '.tmp'); |
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163 | @chmod($filename, 0600); |
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164 | sqsession_register($prefs_cache , 'prefs_cache'); |
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165 | } |
166 | |
167 | /** |
168 | * Remove a preference for the current user. |
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169 | * |
170 | * @param string $data_dir data directory |
171 | * @param string $username user name |
172 | * @param string $pref_name preference name |
173 | * |
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174 | */ |
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175 | function removePref($data_dir, $username, $pref_name) { |
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176 | global $prefs_cache; |
177 | |
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178 | cachePrefValues($data_dir, $username); |
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179 | |
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180 | if (isset($prefs_cache[$pref_name])) { |
181 | unset($prefs_cache[$pref_name]); |
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182 | } |
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183 | |
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184 | savePrefValues($data_dir, $username); |
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185 | } |
186 | |
187 | /** |
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188 | * Set the desired preference setting ($pref_name) |
189 | * to whatever is in $value. |
190 | * |
191 | * @param string $data_dir data directory |
192 | * @param string $username user name |
193 | * @param string $pref_name preference name |
194 | * @param mixed $value preference value |
195 | * |
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196 | */ |
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197 | function setPref($data_dir, $username, $pref_name, $value) { |
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198 | global $prefs_cache; |
199 | |
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200 | cachePrefValues($data_dir, $username); |
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201 | if (isset($prefs_cache[$pref_name]) && ($prefs_cache[$pref_name] == $value)) { |
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202 | return; |
203 | } |
204 | |
205 | if ($value === '') { |
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206 | removePref($data_dir, $username, $pref_name); |
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207 | return; |
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208 | } |
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209 | |
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210 | $prefs_cache[$pref_name] = $value; |
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211 | savePrefValues($data_dir, $username); |
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212 | } |
213 | |
214 | /** |
215 | * Check for a preferences file. If one can not be found, create it. |
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216 | * |
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217 | * @param string $data_dir data directory |
218 | * @param string $username user name |
219 | * @param string $filename (since 1.2.0) preference file name. |
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220 | * (OPTIONAL; default is an empty string, |
221 | * in which case the file name is |
222 | * automatically detected) |
223 | * |
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224 | */ |
225 | function checkForPrefs($data_dir, $username, $filename = '') { |
226 | /* First, make sure we have the filename. */ |
227 | if ($filename == '') { |
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228 | $filename = getHashedFile($username, $data_dir, "$username.pref"); |
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229 | } |
230 | |
231 | /* Then, check if the file exists. */ |
232 | if (!@file_exists($filename) ) { |
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233 | |
234 | /* If it does not exist, check for default_prefs */ |
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235 | |
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236 | /* First, check legacy locations: data dir */ |
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237 | if(substr($data_dir,-1) != '/') { |
238 | $data_dir .= '/'; |
239 | } |
240 | $default_pref = $data_dir . 'default_pref'; |
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241 | |
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242 | /* or legacy location: internal data dir */ |
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243 | if (!@file_exists($default_pref)) { |
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244 | $default_pref = SM_PATH . 'data/default_pref'; |
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245 | } |
246 | |
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247 | /* If no legacies, check where we'd expect it to be located: |
248 | * under config/ */ |
249 | if (!@file_exists($default_pref)) { |
250 | $default_pref = SM_PATH . 'config/default_pref'; |
251 | } |
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252 | |
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253 | /* If a default_pref file found, try to copy it, if none found, |
254 | * try to create an empty one. If that fails, report an error. |
255 | */ |
256 | if ( |
257 | ( is_readable($default_pref) && !@copy($default_pref, $filename) ) || |
258 | !@touch($filename) |
259 | ) { |
305a1012 |
260 | $uid = 'httpd'; |
261 | if (function_exists('posix_getuid')){ |
262 | $user_data = posix_getpwuid(posix_getuid()); |
263 | $uid = $user_data['name']; |
264 | } |
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265 | $errTitle = _("Could not create initial preference file!"); |
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266 | $errString = $errTitle . "\n" . |
267 | sprintf( _("%s should be writable by user %s."), $data_dir, $uid ) . "\n" . |
268 | _("Please contact your system administrator and report this error.") ; |
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269 | logout_error( $errString, $errTitle ); |
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270 | exit; |
271 | } |
272 | } |
273 | } |
274 | |
275 | /** |
276 | * Write the User Signature. |
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277 | * |
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278 | * @param string $data_dir data directory |
279 | * @param string $username user name |
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280 | * @param integer $number (since 1.2.5) identity number. |
281 | * (before 1.2.5., this parameter |
282 | * was used for the signature value) |
283 | * @param string $value (since 1.2.5) signature value |
284 | * |
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285 | */ |
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286 | function setSig($data_dir, $username, $number, $value) { |
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287 | // Limit signature size to 64KB (database BLOB limit) |
288 | if (strlen($value)>65536) { |
289 | error_option_save(_("Signature is too big.")); |
290 | return; |
291 | } |
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292 | $filename = getHashedFile($username, $data_dir, "$username.si$number"); |
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293 | /* Open the file for writing, or else display an error to the user. */ |
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294 | if(!$file = @fopen("$filename.tmp", 'w')) { |
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295 | logout_error( sprintf( _("Signature file, %s, could not be opened. Contact your system administrator to resolve this issue."), $filename . '.tmp') ); |
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296 | exit; |
297 | } |
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298 | if ( sq_fwrite($file, $value) === FALSE ) { |
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299 | logout_error( sprintf( _("Signature file, %s, could not be written. Contact your system administrator to resolve this issue.") , $filename . '.tmp')); |
300 | exit; |
301 | } |
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302 | fclose($file); |
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303 | if (! @copy($filename . '.tmp',$filename) ) { |
304 | logout_error( sprintf( _("Signature file, %s, could not be copied from temporary file, %s. Contact your system administrator to resolve this issue."), $filename, $filename . '.tmp') ); |
305 | exit; |
306 | } |
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307 | @unlink($filename . '.tmp'); |
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308 | @chmod($filename, 0600); |
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309 | |
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310 | } |
311 | |
312 | /** |
313 | * Get the signature. |
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314 | * |
315 | * @param string $data_dir data directory |
316 | * @param string $username user name |
317 | * @param integer $number (since 1.2.5) identity number |
318 | * |
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319 | * @return string signature |
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320 | * |
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321 | */ |
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322 | function getSig($data_dir, $username, $number) { |
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323 | $filename = getHashedFile($username, $data_dir, "$username.si$number"); |
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324 | $sig = ''; |
325 | if (file_exists($filename)) { |
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326 | /* Open the file, or else display an error to the user. */ |
327 | if(!$file = @fopen($filename, 'r')) |
328 | { |
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329 | logout_error( sprintf( _("Signature file, %s, could not be opened. Contact your system administrator to resolve this issue."), $filename) ); |
330 | exit; |
331 | } |
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332 | while (!feof($file)) { |
333 | $sig .= fgets($file, 1024); |
334 | } |
335 | fclose($file); |
336 | } |
337 | return $sig; |
338 | } |
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339 | |
340 | // vim: et ts=4 |