- }
-
- return $db->getKey($username, $string);
- }
-
- /** Remove the pref $string **/
- function removePref($data_dir, $username, $string) {
- $db = new dbPrefs;
- if(isset($db->error)) $db->failQuery();
-
- $db->deleteKey($username, $string);
- return;
- }
-
- /** sets the pref, $string, to $set_to **/
- function setPref($data_dir, $username, $string, $set_to) {
- $db = new dbPrefs;
- if(isset($db->error))
- $db->failQuery();
-
- $db->setKey($username, $string, $set_to);
- return;
- }
-
- /** This checks if the prefs are available **/
- function checkForPrefs($data_dir, $username) {
- $db = new dbPrefs;
- if(isset($db->error))
- $db->failQuery();
- }
-
- /** Writes the Signature **/
- function setSig($data_dir, $username, $string) {
- $db = new dbPrefs;
- if(isset($db->error))
- $db->failQuery();
-
- $db->setKey($username, "___signature___", $string);
- return;
- }
-
- /** Gets the signature **/
- function getSig($data_dir, $username) {
- $db = new dbPrefs;
- if(isset($db->error))
- $db->failQuery();
-
- return $db->getKey($username, "___signature___");
- }
+ }
+
+ return $db->getKey($username, $string, $default);
+}
+
+/* Remove the pref $string */
+function removePref($data_dir, $username, $string) {
+ $db = new dbPrefs;
+ if(isset($db->error)) {
+ $db->failQuery();
+ }
+
+ $db->deleteKey($username, $string);
+ return;
+}
+
+/* sets the pref, $string, to $set_to */
+function setPref($data_dir, $username, $string, $set_to) {
+ global $prefs_cache;
+
+ if (isset($prefs_cache[$string]) && ($prefs_cache[$string] == $value)) {
+ return;
+ }
+
+ if ($set_to == '') {
+ removePref($data_dir, $username, $string);
+ return;
+ }
+
+ $db = new dbPrefs;
+ if(isset($db->error)) {
+ $db->failQuery();
+ }
+
+ $db->setKey($username, $string, $set_to);
+ $prefs_cache[$string] = $set_to;
+ assert_options(ASSERT_ACTIVE, 1);
+ assert_options(ASSERT_BAIL, 1);
+ assert ('$set_to == $prefs_cache[$string]');
+
+ return;
+}
+
+/* This checks if the prefs are available */
+function checkForPrefs($data_dir, $username) {
+ $db = new dbPrefs;
+ if(isset($db->error)) {
+ $db->failQuery();
+ }
+}
+
+/* Writes the Signature */
+function setSig($data_dir, $username, $string) {
+ $db = new dbPrefs;
+ if(isset($db->error)) {
+ $db->failQuery();
+ }
+
+ $db->setKey($username, '___signature___', $string);
+ return;
+}
+
+/* Gets the signature */
+function getSig($data_dir, $username) {
+ $db = new dbPrefs;
+ if(isset($db->error)) {
+ $db->failQuery();
+ }
+
+ return $db->getKey($username, '___signature___');
+}
+
+/* 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."), $real_hash_dir) . '<br>';
+ echo _("Could not create hashed directory structure!") . "<br>\n";
+ echo _("Please contact your system administrator and report this error.") . "<br>\n";
+ exit;
+ }
+ }
+ }
+
+ /* And return that directory. */
+ return ($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);
+}