\n";
exit;
}
$file = fopen($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;
$highlight_num ++;
}
if ($value != '') {
$prefs_cache[$key] = $value;
}
}
}
fclose($file);
$prefs_are_cached = true;
session_register('prefs_cache');
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 = $default;
}
return ($result);
}
/**
* Save the preferences for this user.
*/
function savePrefValues($data_dir, $username) {
global $prefs_cache;
$filename = getHashedFile($username, $data_dir, "$username.pref");
$file = fopen($filename, '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 $prefs_cache;
cachePrefValues($data_dir, $username);
if (isset($prefs_cache[$string]) && ($prefs_cache[$string] == $value)) {
return;
}
if ($value === '') {
removePref($data_dir, $username, $string);
return;
}
$prefs_cache[$string] = $value;
savePrefValues($data_dir, $username);
}
/**
* Check for a preferences file. If one can not be found, create it.
*/
function checkForPrefs($data_dir, $username, $filename = '') {
/* First, make sure we have the filename. */
if ($filename == '') {
$filename = getHashedFile($username, $data_dir, '$username.pref');
}
/* Then, check if the file exists. */
if (!@file_exists($filename) ) {
/* First, check the $data_dir for the default preference file. */
$default_pref = $data_dir . 'default_pref';
/* If it is not there, check the internal data directory. */
if (!@file_exists($default_pref)) {
$default_pref = '../data/default_pref';
}
/* Otherwise, report an error. */
if (!file_exists($default_pref)) {
echo _("Error opening ") . $default_pref . "
\n";
echo _("Default preference file not found!") . "
\n";
echo _("Please contact your system administrator and report this error.") . "
\n";
exit;
} else if (!@copy($default_pref, $filename)) {
echo _("Error opening ") . $default_pref . '
';
echo _("Could not create initial preference file!") . "
\n";
echo _("Please contact your system administrator and report this error.") . "
\n";
exit;
}
}
}
/**
* Write the User Signature.
*/
function setSig($data_dir, $username, $value) {
$filename = getHashedFile($username, $data_dir, "$username.sig");
$file = fopen($filename, 'w');
fwrite($file, $value);
fclose($file);
}
/**
* Get the signature.
*/
function getSig($data_dir, $username) {
#$filename = $data_dir . $username . '.sig';
$filename = getHashedFile($username, $data_dir, "$username.sig");
$sig = '';
if (file_exists($filename)) {
$file = fopen($filename, 'r');
while (!feof($file)) {
$sig .= fgets($file, 1024);
}
fclose($file);
}
return $sig;
}
function getHashedFile($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."), $real_hash_dir) . '
' .
_("Could not create hashed directory structure!") . "
\n" .
_("Please contact your system administrator and report this error.") . "
\n";
exit;
}
}
}
/* And return that directory. */
return ($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);
}
?>