error)) {
printf( _("Preference database error (%s). Exiting abnormally"),
$db->error);
exit;
}
$db->fillPrefsCache($username);
if (isset($db->error)) {
printf( _("Preference database error (%s). Exiting abnormally"),
$db->error);
exit;
}
$prefs_are_cached = true;
session_register('prefs_cache');
session_register('prefs_are_cached');
}
class dbPrefs {
var $DSN = 'mysql://user:passwd@host/database';
var $table = 'userprefs';
var $dbh = NULL;
var $error = NULL;
var $default = Array('chosen_theme' => '../themes/default_theme.php',
'show_html_default' => '0');
function open() {
if(isset($this->dbh)) {
return true;
}
$dbh = DB::connect($this->DSN, true);
if(DB::isError($dbh) || DB::isWarning($dbh)) {
$this->error = DB::errorMessage($dbh);
return false;
}
$this->dbh = $dbh;
return true;
}
function failQuery($res = NULL) {
if($res == NULL) {
printf(_("Preference database error (%s). Exiting abnormally"),
$this->error);
} else {
printf(_("Preference database error (%s). Exiting abnormally"),
DB::errorMessage($res));
}
exit;
}
function getKey($user, $key, $default = '') {
global $prefs_cache;
cachePrefValues($user);
if (isset($prefs_cache[$key])) {
return $prefs_cache[$key];
} else {
if (isset($this->default[$key])) {
return $this->default[$key];
} else {
return $default;
}
}
}
function deleteKey($user, $key) {
global $prefs_cache;
$this->open();
$query = sprintf("DELETE FROM %s WHERE user='%s' AND prefkey='%s'",
$this->table,
$this->dbh->quoteString($user),
$this->dbh->quoteString($key));
$res = $this->dbh->simpleQuery($query);
if(DB::isError($res)) {
$this->failQuery($res);
}
unset($prefs_cache[$key]);
if(substr($key, 0, 9) == 'highlight') {
$this->renumberHighlightList($user);
}
return true;
}
function setKey($user, $key, $value) {
$this->open();
$query = sprintf("REPLACE INTO %s (user,prefkey,prefval) ".
"VALUES('%s','%s','%s')",
$this->table,
$this->dbh->quoteString($user),
$this->dbh->quoteString($key),
$this->dbh->quoteString($value));
$res = $this->dbh->simpleQuery($query);
if(DB::isError($res)) {
$this->failQuery($res);
}
return true;
}
function fillPrefsCache($user) {
global $prefs_cache;
$this->open();
$prefs_cache = array();
$query = sprintf("SELECT prefkey, prefval FROM %s ".
"WHERE user = '%s'",
$this->table,
$this->dbh->quoteString($user));
$res = $this->dbh->query($query);
if (DB::isError($res)) {
$this->failQuery($res);
}
while ($row = $res->fetchRow(DB_FETCHMODE_ASSOC)) {
$prefs_cache[$row['prefkey']] = $row['prefval'];
}
}
/*
* When a highlight option is deleted the preferences module
* must renumber the list. This should be done somewhere else,
* but it is not, so....
*/
function renumberHighlightList($user) {
$this->open();
$query = sprintf("SELECT * FROM %s WHERE user='%s' ".
"AND prefkey LIKE 'highlight%%' ORDER BY prefkey",
$this->table,
$this->dbh->quoteString($user));
$res = $this->dbh->query($query);
if(DB::isError($res)) {
$this->failQuery($res);
}
/* Store old data in array */
$rows = Array();
while($row = $res->fetchRow(DB_FETCHMODE_ASSOC)) {
$rows[] = $row;
}
/* Renumber keys of old data */
$hilinum = 0;
for($i = 0; $i < count($rows) ; $i++) {
$oldkey = $rows[$i]['prefkey'];
$newkey = substr($oldkey, 0, 9) . $hilinum;
$hilinum++;
if($oldkey != $newkey) {
$query = sprintf("UPDATE %s SET prefkey='%s' ".
"WHERE user ='%s' AND prefkey='%s'",
$this->table,
$this->dbh->quoteString($newkey),
$this->dbh->quoteString($user),
$this->dbh->quoteString($oldkey));
$res = $this->dbh->simpleQuery($query);
if(DB::isError($res)) {
$this->failQuery($res);
}
}
}
return;
}
} /* end class dbPrefs */
/* returns the value for the pref $string */
function getPref($data_dir, $username, $string, $default = '') {
$db = new dbPrefs;
if(isset($db->error)) {
printf( _("Preference database error (%s). Exiting abnormally"),
$db->error);
exit;
}
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] == $set_to)) {
return;
}
if ($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."), $real_hash_dir) . '
';
echo _("Could not create hashed directory structure!") . "
\n";
echo _("Please contact your system administrator and report this error.") . "
\n";
exit;
}
}
}
/* And return that directory. */
return ($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);
}
?>