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