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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 | * @subpackage prefs |
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14 | */ |
15 | |
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16 | /** @ignore */ |
17 | if (!defined('SM_PATH')) define('SM_PATH','../'); |
18 | |
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19 | /** Include global.php */ |
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20 | require_once(SM_PATH . 'functions/global.php'); |
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21 | require_once(SM_PATH . 'functions/plugin.php'); |
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22 | |
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23 | sqgetGlobalVar('prefs_cache', $prefs_cache, SQ_SESSION ); |
24 | sqgetGlobalVar('prefs_are_cached', $prefs_are_cached, SQ_SESSION ); |
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25 | |
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26 | if ( !sqsession_is_registered('prefs_are_cached') || |
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27 | !isset( $prefs_cache) || |
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28 | !is_array( $prefs_cache) |
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29 | ) { |
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30 | $prefs_are_cached = false; |
31 | $prefs_cache = array(); |
32 | } |
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33 | |
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34 | $prefs_backend = do_hook_function('prefs_backend'); |
35 | if (isset($prefs_backend) && !empty($prefs_backend) && file_exists(SM_PATH . $prefs_backend)) { |
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36 | require_once(SM_PATH . $prefs_backend); |
37 | } elseif (isset($prefs_dsn) && !empty($prefs_dsn)) { |
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38 | require_once(SM_PATH . 'functions/db_prefs.php'); |
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39 | } else { |
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40 | require_once(SM_PATH . 'functions/file_prefs.php'); |
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41 | } |
42 | |
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43 | /* Hashing functions */ |
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44 | |
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45 | /** |
46 | * Given a username and datafilename, this will return the path to the |
47 | * hashed location of that datafile. |
48 | * |
49 | * @param string username the username of the current user |
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50 | * @param string dir the SquirrelMail datadir |
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51 | * @param string datafile the name of the file to open |
52 | * @param bool hash_seach default true |
53 | * @return string the hashed location of datafile |
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54 | * @since 1.2.0 |
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55 | */ |
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56 | function getHashedFile($username, $dir, $datafile, $hash_search = true) { |
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57 | |
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58 | /* Remove trailing slash from $dir if found */ |
59 | if (substr($dir, -1) == '/') { |
60 | $dir = substr($dir, 0, strlen($dir) - 1); |
61 | } |
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62 | |
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63 | /* Compute the hash for this user and extract the hash directories. */ |
64 | $hash_dirs = computeHashDirs($username); |
65 | |
66 | /* First, get and make sure the full hash directory exists. */ |
67 | $real_hash_dir = getHashedDir($username, $dir, $hash_dirs); |
68 | |
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69 | /* Set the value of our real data file, after we've removed unwanted characters. */ |
70 | $datafile = str_replace('/', '_', $datafile); |
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71 | $result = "$real_hash_dir/$datafile"; |
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72 | |
73 | /* Check for this file in the real hash directory. */ |
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74 | if ($hash_search && !@file_exists($result)) { |
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75 | /* First check the base directory, the most common location. */ |
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76 | if (@file_exists("$dir/$datafile")) { |
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77 | rename("$dir/$datafile", $result); |
78 | |
79 | /* Then check the full range of possible hash directories. */ |
80 | } else { |
81 | $check_hash_dir = $dir; |
82 | for ($h = 0; $h < 4; ++$h) { |
83 | $check_hash_dir .= '/' . $hash_dirs[$h]; |
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84 | if (@is_readable("$check_hash_dir/$datafile")) { |
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85 | rename("$check_hash_dir/$datafile", $result); |
86 | break; |
87 | } |
88 | } |
89 | } |
90 | } |
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91 | |
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92 | /* Return the full hashed datafile path. */ |
93 | return ($result); |
94 | } |
95 | |
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96 | /** |
97 | * Helper function for getHashedFile, given a username returns the hashed |
98 | * dir for that username. |
99 | * |
100 | * @param string username the username of the current user |
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101 | * @param string dir the SquirrelMail datadir |
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102 | * @param string hash_dirs default '' |
103 | * @return the path to the hash dir for username |
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104 | * @since 1.2.0 |
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105 | */ |
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106 | function getHashedDir($username, $dir, $hash_dirs = '') { |
107 | global $dir_hash_level; |
108 | |
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109 | /* Remove trailing slash from $dir if found */ |
110 | if (substr($dir, -1) == '/') { |
111 | $dir = substr($dir, 0, strlen($dir) - 1); |
112 | } |
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113 | |
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114 | /* If necessary, populate the hash dir variable. */ |
115 | if ($hash_dirs == '') { |
116 | $hash_dirs = computeHashDirs($username); |
117 | } |
118 | |
119 | /* Make sure the full hash directory exists. */ |
120 | $real_hash_dir = $dir; |
121 | for ($h = 0; $h < $dir_hash_level; ++$h) { |
122 | $real_hash_dir .= '/' . $hash_dirs[$h]; |
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123 | if (!@is_dir($real_hash_dir)) { |
124 | if (!@mkdir($real_hash_dir, 0770)) { |
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125 | echo sprintf(_("Error creating directory %s."), $real_hash_dir) . '<br />' . |
126 | _("Could not create hashed directory structure!") . "<br />\n" . |
127 | _("Please contact your system administrator and report this error.") . "<br />\n"; |
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128 | exit; |
129 | } |
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130 | } |
131 | } |
132 | |
133 | /* And return that directory. */ |
134 | return ($real_hash_dir); |
135 | } |
136 | |
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137 | /** |
138 | * Helper function for getHashDir which does the actual hash calculation. |
139 | * |
140 | * @param string username the username to calculate the hash dir for |
141 | * @return array a list of hash dirs for this username |
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142 | * @since 1.2.0 |
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143 | */ |
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144 | function computeHashDirs($username) { |
145 | /* Compute the hash for this user and extract the hash directories. */ |
146 | $hash = base_convert(crc32($username), 10, 16); |
147 | $hash_dirs = array(); |
148 | for ($h = 0; $h < 4; ++ $h) { |
149 | $hash_dirs[] = substr($hash, $h, 1); |
150 | } |
151 | |
152 | /* Return our array of hash directories. */ |
153 | return ($hash_dirs); |
154 | } |
155 | |
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156 | /** |
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157 | * Javascript support detection function |
158 | * @param boolean $reset recheck javascript support if set to true. |
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159 | * @return integer SMPREF_JS_ON or SMPREF_JS_OFF ({@see functions/constants.php}) |
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160 | * @since 1.5.1 |
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161 | */ |
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162 | function checkForJavascript($reset = FALSE) { |
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163 | global $data_dir, $username, $javascript_on, $javascript_setting; |
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164 | |
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165 | if ( !$reset && sqGetGlobalVar('javascript_on', $javascript_on, SQ_SESSION) ) |
166 | return $javascript_on; |
167 | |
168 | if ( $reset || !isset($javascript_setting) ) |
169 | $javascript_setting = getPref($data_dir, $username, 'javascript_setting', SMPREF_JS_AUTODETECT); |
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170 | |
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171 | if ( !sqGetGlobalVar('new_js_autodetect_results', $js_autodetect_results) && |
172 | !sqGetGlobalVar('js_autodetect_results', $js_autodetect_results) ) |
173 | $js_autodetect_results = SMPREF_JS_OFF; |
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174 | |
175 | if ( $javascript_setting == SMPREF_JS_AUTODETECT ) |
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176 | $javascript_on = $js_autodetect_results; |
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177 | else |
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178 | $javascript_on = $javascript_setting; |
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179 | |
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180 | sqsession_register($javascript_on, 'javascript_on'); |
181 | return $javascript_on; |
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182 | } |
183 | |
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184 | ?> |