/**
* prefs.php
*
- * Copyright (c) 1999-2001 The SquirrelMail Development Team
+ * Copyright (c) 1999-2002 The SquirrelMail Project Team
* Licensed under the GNU GPL. For full terms see the file COPYING.
*
* This contains functions for manipulating user preferences
* $Id$
*/
-global $prefs_are_cached, $prefs_cache;
-if (!session_is_registered('prefs_are_cached')) {
+require_once(SM_PATH . 'functions/global.php');
+
+if (isset($_SESSION['prefs_cache'])) {
+ $prefs_cache = $_SESSION['prefs_cache'];
+}
+if (isset($_SESSION['prefs_are_cached'])) {
+ $prefs_are_cached = $_SESSION['prefs_are_cached'];
+}
+
+$rg = ini_get('register_globals');
+
+if ( !sqsession_is_registered('prefs_are_cached') ||
+ !isset( $prefs_cache) ||
+ !is_array( $prefs_cache) ||
+ substr( phpversion(), 0, 3 ) == '4.1' ||
+ substr( phpversion(), 0, 3 ) == '4.2' ||
+ (substr( phpversion(), 0, 3 ) == '4.0' && empty($rg))) {
$prefs_are_cached = false;
$prefs_cache = array();
}
-/**
- * Check the preferences into the session cache.
- */
-function cachePrefValues($data_dir, $username) {
- global $prefs_are_cached, $prefs_cache;
-
- if ($prefs_are_cached) {
- return;
- }
-
- $filename = $data_dir . $username . '.pref';
+if (isset($prefs_dsn) && !empty($prefs_dsn)) {
+ require_once(SM_PATH . 'functions/db_prefs.php');
+} else {
+ require_once(SM_PATH . 'functions/file_prefs.php');
+}
- if (!file_exists($filename)) {
- printf (_("Preference file, %s, does not exist. Log out, and log back in to create a default preference file."), $filename);
- exit;
- }
+/* Hashing functions */
- $file = fopen($filename, 'r');
-
- /* Read in the preferences. */
- $highlight_num = 0;
- while (! feof($file)) {
- $pref = trim(fgets($file, 1024));
- $equalsAt = strpos($pref, '=');
- if ($equalsAt > 0) {
- $key = substr($pref, 0, $equalsAt);
- $value = substr($pref, $equalsAt + 1);
- if (substr($key, 0, 9) == 'highlight') {
- $key = 'highlight' . $highlight_num;
- $highlight_num ++;
- }
+function getHashedFile($username, $dir, $datafile, $hash_search = true) {
+ global $dir_hash_level;
- if ($value != '') {
- $prefs_cache[$key] = $value;
+ /* Remove trailing slash from $dir if found */
+ if (substr($dir, -1) == '/') {
+ $dir = substr($dir, 0, strlen($dir) - 1);
+ }
+
+ /* Compute the hash for this user and extract the hash directories. */
+ $hash_dirs = computeHashDirs($username);
+
+ /* First, get and make sure the full hash directory exists. */
+ $real_hash_dir = getHashedDir($username, $dir, $hash_dirs);
+
+ /* Set the value of our real data file. */
+ $result = "$real_hash_dir/$datafile";
+
+ /* Check for this file in the real hash directory. */
+ if ($hash_search && !@file_exists($result)) {
+ /* First check the base directory, the most common location. */
+ if (@file_exists("$dir/$datafile")) {
+ rename("$dir/$datafile", $result);
+
+ /* Then check the full range of possible hash directories. */
+ } else {
+ $check_hash_dir = $dir;
+ for ($h = 0; $h < 4; ++$h) {
+ $check_hash_dir .= '/' . $hash_dirs[$h];
+ if (@is_readable("$check_hash_dir/$datafile")) {
+ rename("$check_hash_dir/$datafile", $result);
+ break;
+ }
}
}
- }
- fclose($file);
-
- session_unregister('prefs_cache');
- session_register('prefs_cache');
-
- $prefs_are_cached = true;
- session_unregister('prefs_are_cached');
- session_register('prefs_are_cached');
-}
-
-/**
- * Return the value for the prefernce given by $string.
- */
-function getPref($data_dir, $username, $string, $default = '') {
- global $prefs_cache;
- $result = '';
-
- cachePrefValues($data_dir, $username);
-
- if (isset($prefs_cache[$string])) {
- $result = $prefs_cache[$string];
- } else {
- $result = $default;
}
-
+
+ /* Return the full hashed datafile path. */
return ($result);
}
-/**
- * Save the preferences for this user.
- */
-function savePrefValues($data_dir, $username) {
- global $prefs_cache;
-
- $file = fopen($data_dir . $username . '.pref', 'w');
- foreach ($prefs_cache as $Key => $Value) {
- if (isset($Value)) {
- fwrite($file, $Key . '=' . $Value . "\n");
- }
- }
- fclose($file);
-}
-
-/**
- * Remove a preference for the current user.
- */
-function removePref($data_dir, $username, $string) {
- global $prefs_cache;
-
- cachePrefValues($data_dir, $username);
-
- if (isset($prefs_cache[$string])) {
- unset($prefs_cache[$string]);
- }
-
- savePrefValues($data_dir, $username);
-}
-
-/**
- * Set a there preference $string to $value.
- */
-function setPref($data_dir, $username, $string, $value) {
- global $prefs_cache;
+function getHashedDir($username, $dir, $hash_dirs = '') {
+ global $dir_hash_level;
- cachePrefValues($data_dir, $username);
- if (isset($prefs_cache[$string]) && ($prefs_cache[$string] == $value)) {
- return;
+ /* Remove trailing slash from $dir if found */
+ if (substr($dir, -1) == '/') {
+ $dir = substr($dir, 0, strlen($dir) - 1);
}
-
- if ($value === '') {
- removePref($data_dir, $username, $string);
- return;
+
+ /* If necessary, populate the hash dir variable. */
+ if ($hash_dirs == '') {
+ $hash_dirs = computeHashDirs($username);
}
- $prefs_cache[$string] = $value;
- savePrefValues($data_dir, $username);
-}
-
-/**
- * Check for a preferences file. If one can not be found, create it.
- */
-function checkForPrefs($data_dir, $username) {
- $filename = $data_dir . $username . '.pref';
- if (!file_exists($filename) ) {
- if (!copy($data_dir . 'default_pref', $filename)) {
- echo _("Error opening ") . $filename;
- exit;
+ /* Make sure the full hash directory exists. */
+ $real_hash_dir = $dir;
+ for ($h = 0; $h < $dir_hash_level; ++$h) {
+ $real_hash_dir .= '/' . $hash_dirs[$h];
+ if (!@is_dir($real_hash_dir)) {
+ if (!@mkdir($real_hash_dir, 0770)) {
+ echo sprintf(_("Error creating directory %s."), $real_hash_dir) . '<br>' .
+ _("Could not create hashed directory structure!") . "<br>\n" .
+ _("Please contact your system administrator and report this error.") . "<br>\n";
+ exit;
+ }
}
}
-}
-/**
- * Write the User Signature.
- */
-function setSig($data_dir, $username, $value) {
- $file = fopen($data_dir . $username . '.sig', 'w');
- fwrite($file, $value);
- fclose($file);
+ /* And return that directory. */
+ return ($real_hash_dir);
}
-/**
- * Get the signature.
- */
-function getSig($data_dir, $username) {
- $filename = $data_dir . $username . '.sig';
- $sig = '';
- if (file_exists($filename)) {
- $file = fopen($filename, 'r');
- while (!feof($file)) {
- $sig .= fgets($file, 1024);
- }
- fclose($file);
+function computeHashDirs($username) {
+ /* Compute the hash for this user and extract the hash directories. */
+ $hash = base_convert(crc32($username), 10, 16);
+ $hash_dirs = array();
+ for ($h = 0; $h < 4; ++ $h) {
+ $hash_dirs[] = substr($hash, $h, 1);
}
- return $sig;
+
+ /* Return our array of hash directories. */
+ return ($hash_dirs);
}
?>
projects / squirrelmail.git / blobdiff