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1 | <?php |
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2 | |
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3 | /** |
4 | * prefs.php |
5 | * |
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6 | * This contains functions for manipulating user preferences |
7 | * |
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8 | * @copyright © 1999-2005 The SquirrelMail Project Team |
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 |
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13 | */ |
14 | |
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15 | /** @ignore */ |
16 | if (!defined('SM_PATH')) define('SM_PATH','../'); |
17 | |
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18 | /** Include global.php */ |
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19 | require_once(SM_PATH . 'functions/global.php'); |
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20 | require_once(SM_PATH . 'functions/plugin.php'); |
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21 | |
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22 | sqgetGlobalVar('prefs_cache', $prefs_cache, SQ_SESSION ); |
23 | sqgetGlobalVar('prefs_are_cached', $prefs_are_cached, SQ_SESSION ); |
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24 | |
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25 | if ( !sqsession_is_registered('prefs_are_cached') || |
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26 | !isset( $prefs_cache) || |
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27 | !is_array( $prefs_cache) |
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28 | ) { |
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29 | $prefs_are_cached = false; |
30 | $prefs_cache = array(); |
31 | } |
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32 | |
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33 | $prefs_backend = do_hook_function('prefs_backend'); |
34 | if (isset($prefs_backend) && !empty($prefs_backend) && file_exists(SM_PATH . $prefs_backend)) { |
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35 | require_once(SM_PATH . $prefs_backend); |
36 | } elseif (isset($prefs_dsn) && !empty($prefs_dsn)) { |
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37 | require_once(SM_PATH . 'functions/db_prefs.php'); |
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38 | } else { |
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39 | require_once(SM_PATH . 'functions/file_prefs.php'); |
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40 | } |
41 | |
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42 | /* Hashing functions */ |
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43 | |
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44 | /** |
45 | * Given a username and datafilename, this will return the path to the |
46 | * hashed location of that datafile. |
47 | * |
48 | * @param string username the username of the current user |
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49 | * @param string dir the SquirrelMail datadir |
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50 | * @param string datafile the name of the file to open |
51 | * @param bool hash_seach default true |
52 | * @return string the hashed location of datafile |
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53 | * @since 1.2.0 |
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54 | */ |
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55 | function getHashedFile($username, $dir, $datafile, $hash_search = true) { |
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56 | |
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57 | /* Remove trailing slash from $dir if found */ |
58 | if (substr($dir, -1) == '/') { |
59 | $dir = substr($dir, 0, strlen($dir) - 1); |
60 | } |
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61 | |
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62 | /* Compute the hash for this user and extract the hash directories. */ |
63 | $hash_dirs = computeHashDirs($username); |
64 | |
65 | /* First, get and make sure the full hash directory exists. */ |
66 | $real_hash_dir = getHashedDir($username, $dir, $hash_dirs); |
67 | |
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68 | /* Set the value of our real data file, after we've removed unwanted characters. */ |
69 | $datafile = str_replace('/', '_', $datafile); |
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70 | $result = "$real_hash_dir/$datafile"; |
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71 | |
72 | /* Check for this file in the real hash directory. */ |
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73 | if ($hash_search && !@file_exists($result)) { |
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74 | /* First check the base directory, the most common location. */ |
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75 | if (@file_exists("$dir/$datafile")) { |
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76 | rename("$dir/$datafile", $result); |
77 | |
78 | /* Then check the full range of possible hash directories. */ |
79 | } else { |
80 | $check_hash_dir = $dir; |
81 | for ($h = 0; $h < 4; ++$h) { |
82 | $check_hash_dir .= '/' . $hash_dirs[$h]; |
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83 | if (@is_readable("$check_hash_dir/$datafile")) { |
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84 | rename("$check_hash_dir/$datafile", $result); |
85 | break; |
86 | } |
87 | } |
88 | } |
89 | } |
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90 | |
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91 | /* Return the full hashed datafile path. */ |
92 | return ($result); |
93 | } |
94 | |
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95 | /** |
96 | * Helper function for getHashedFile, given a username returns the hashed |
97 | * dir for that username. |
98 | * |
99 | * @param string username the username of the current user |
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100 | * @param string dir the SquirrelMail datadir |
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101 | * @param string hash_dirs default '' |
102 | * @return the path to the hash dir for username |
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103 | * @since 1.2.0 |
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104 | */ |
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105 | function getHashedDir($username, $dir, $hash_dirs = '') { |
106 | global $dir_hash_level; |
107 | |
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108 | /* Remove trailing slash from $dir if found */ |
109 | if (substr($dir, -1) == '/') { |
110 | $dir = substr($dir, 0, strlen($dir) - 1); |
111 | } |
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112 | |
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113 | /* If necessary, populate the hash dir variable. */ |
114 | if ($hash_dirs == '') { |
115 | $hash_dirs = computeHashDirs($username); |
116 | } |
117 | |
118 | /* Make sure the full hash directory exists. */ |
119 | $real_hash_dir = $dir; |
120 | for ($h = 0; $h < $dir_hash_level; ++$h) { |
121 | $real_hash_dir .= '/' . $hash_dirs[$h]; |
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122 | if (!@is_dir($real_hash_dir)) { |
123 | if (!@mkdir($real_hash_dir, 0770)) { |
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124 | echo sprintf(_("Error creating directory %s."), $real_hash_dir) . '<br />' . |
125 | _("Could not create hashed directory structure!") . "<br />\n" . |
126 | _("Please contact your system administrator and report this error.") . "<br />\n"; |
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127 | exit; |
128 | } |
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129 | } |
130 | } |
131 | |
132 | /* And return that directory. */ |
133 | return ($real_hash_dir); |
134 | } |
135 | |
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136 | /** |
137 | * Helper function for getHashDir which does the actual hash calculation. |
138 | * |
139 | * @param string username the username to calculate the hash dir for |
140 | * @return array a list of hash dirs for this username |
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141 | * @since 1.2.0 |
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142 | */ |
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143 | function computeHashDirs($username) { |
144 | /* Compute the hash for this user and extract the hash directories. */ |
145 | $hash = base_convert(crc32($username), 10, 16); |
146 | $hash_dirs = array(); |
147 | for ($h = 0; $h < 4; ++ $h) { |
148 | $hash_dirs[] = substr($hash, $h, 1); |
149 | } |
150 | |
151 | /* Return our array of hash directories. */ |
152 | return ($hash_dirs); |
153 | } |
154 | |
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155 | /** |
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156 | * Javascript support detection function |
157 | * @param boolean $reset recheck javascript support if set to true. |
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158 | * @return integer SMPREF_JS_ON or SMPREF_JS_OFF ({@see functions/constants.php}) |
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159 | * @since 1.5.1 |
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160 | */ |
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161 | function checkForJavascript($reset = FALSE) { |
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162 | global $data_dir, $username, $javascript_on, $javascript_setting; |
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163 | |
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164 | if ( !$reset && sqGetGlobalVar('javascript_on', $javascript_on, SQ_SESSION) ) |
165 | return $javascript_on; |
166 | |
167 | if ( $reset || !isset($javascript_setting) ) |
168 | $javascript_setting = getPref($data_dir, $username, 'javascript_setting', SMPREF_JS_AUTODETECT); |
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169 | |
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170 | if ( !sqGetGlobalVar('new_js_autodetect_results', $js_autodetect_results) && |
171 | !sqGetGlobalVar('js_autodetect_results', $js_autodetect_results) ) |
172 | $js_autodetect_results = SMPREF_JS_OFF; |
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173 | |
174 | if ( $javascript_setting == SMPREF_JS_AUTODETECT ) |
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175 | $javascript_on = $js_autodetect_results; |
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176 | else |
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177 | $javascript_on = $javascript_setting; |
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178 | |
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179 | sqsession_register($javascript_on, 'javascript_on'); |
180 | return $javascript_on; |
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181 | } |
182 | |
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183 | ?> |