<?php
- /**
- ** prefs.php
- **
- ** This contains functions for manipulating user preferences
- **
- ** $Id$
- **/
-
- $prefs_php = true;
-
- /** returns the value for $string **/
- function getPref($data_dir, $username, $string) {
- $filename = "$data_dir$username.pref";
- if (!file_exists($filename)) {
- printf (_("Preference file %s not found. Exiting abnormally"), $filename);
- exit;
- }
-
- $file = fopen($filename, "r");
-
- /** read in all the preferences **/
- for ($i=0; !feof($file); $i++) {
- $pref = fgets($file, 1024);
- if (substr($pref, 0, strpos($pref, "=")) == $string) {
- fclose($file);
- return trim(substr($pref, strpos($pref, "=")+1));
- }
- }
- fclose($file);
- return "";
- }
-
- function removePref($data_dir, $username, $string) {
- $filename = "$data_dir$username.pref";
- $found = false;
- if (!file_exists($filename)) {
- printf (_("Preference file, %s, does not exist. Log out, and log back in to create a default preference file."), $filename);
- echo "<br>\n";
- exit;
- }
- $file = fopen($filename, "r");
-
- for ($i=0; !feof($file); $i++) {
- $pref[$i] = fgets($file, 1024);
- if (substr($pref[$i], 0, strpos($pref[$i], "=")) == $string) {
- $i--;
- }
- }
- fclose($file);
-
- for ($i=0,$j=0; $i < count($pref); $i++) {
- if (substr($pref[$i], 0, 9) == "highlight") {
- $hlt[$j] = substr($pref[$i], strpos($pref[$i], "=")+1);
- $j++;
- }
- }
-
- $file = fopen($filename, "w");
- for ($i=0; $i < count($pref); $i++) {
- if (substr($pref[$i], 0, 9) != "highlight") {
- fwrite($file, "$pref[$i]", 1024);
- }
- }
- if (isset($hlt)) {
- for ($i=0; $i < count($hlt); $i++) {
- fwrite($file, "highlight$i=$hlt[$i]");
- }
- }
- fclose($file);
- }
-
- /** sets the pref, $string, to $set_to **/
- function setPref($data_dir, $username, $string, $set_to) {
- $filename = "$data_dir$username.pref";
- $found = false;
- if (!file_exists($filename)) {
- printf (_("Preference file, %s, does not exist. Log out, and log back in to create a default preference file."), $filename);
- echo "\n<br>\n";
- exit;
- }
- $file = fopen($filename, "r");
-
- /** read in all the preferences **/
- for ($i=0; !feof($file); $i++) {
- $pref[$i] = fgets($file, 1024);
- if (substr($pref[$i], 0, strpos($pref[$i], "=")) == $string) {
- $found = true;
- $pos = $i;
- }
- }
- fclose($file);
-
- $file = fopen($filename, "w");
- if ($found == true) {
- for ($i=0; $i < count($pref); $i++) {
- if ($i == $pos) {
- fwrite($file, "$string=$set_to\n", 1024);
- } else {
- fwrite($file, "$pref[$i]", 1024);
+
+/**
+ * prefs.php
+ *
+ * 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') ||
+ !isset( $prefs_cache) ||
+ !is_array( $prefs_cache) ||
+ substr( phpversion(), 0, 3 ) == '4.1' ||
+ substr( phpversion(), 0, 3 ) == '4.2' ) {
+ $prefs_are_cached = false;
+ $prefs_cache = array();
+}
+
+if (isset($prefs_dsn) && !empty($prefs_dsn)) {
+ require_once(SM_PATH . 'functions/db_prefs.php');
+} else {
+ require_once(SM_PATH . 'functions/file_prefs.php');
+}
+
+/* Hashing functions */
+
+function getHashedFile($username, $dir, $datafile, $hash_search = true) {
+ global $dir_hash_level;
+
+ /* 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", $result);
+ break;
+ }
+ }
+ }
+ }
+
+ /* Return the full hashed datafile path. */
+ return ($result);
+}
+
+function getHashedDir($username, $dir, $hash_dirs = '') {
+ global $dir_hash_level;
+
+ /* Remove trailing slash from $dir if found */
+ if (substr($dir, -1) == '/') {
+ $dir = substr($dir, 0, strlen($dir) - 1);
+ }
+
+ /* If necessary, populate the hash dir variable. */
+ if ($hash_dirs == '') {
+ $hash_dirs = computeHashDirs($username);
+ }
+
+ /* 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."), $real_hash_dir) . '<br>' .
+ _("Could not create hashed directory structure!") . "<br>\n" .
+ _("Please contact your system administrator and report this error.") . "<br>\n";
+ exit;
}
- }
- } else {
- for ($i=0; $i < count($pref); $i++) {
- fwrite($file, "$pref[$i]", 1024);
- }
- fwrite($file, "$string=$set_to\n", 1024);
- }
-
- fclose($file);
- }
-
-
-
-
- /** This checks if there is a pref file, if there isn't, it will
- 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;
- }
- }
- }
-
-
-
- /** Writes the Signature **/
- function setSig($data_dir, $username, $string) {
- $filename = "$data_dir$username.sig";
- $file = fopen($filename, "w");
- fwrite($file, $string);
- fclose($file);
- }
-
-
-
- /** Gets 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);
- }
- return $sig;
- }
+ }
+ }
+
+ /* And return that directory. */
+ return ($real_hash_dir);
+}
+
+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, $h, 1);
+ }
+
+ /* Return our array of hash directories. */
+ return ($hash_dirs);
+}
+
?>