Viewing file:  file_prefs.php (10.37 KB) -rw-r--r--
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<?php
/**
* file_prefs.php
*
* This contains functions for manipulating user preferences in files
*
* @copyright © 1999-2006 The SquirrelMail Project Team
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
* @version $Id: file_prefs.php,v 1.43 2006/01/23 18:39:32 tokul Exp $
* @package squirrelmail
* @subpackage prefs
* @since 1.2.5
*/
/** @ignore */
if (! defined('SM_PATH')) define('SM_PATH','../');
/** include this for error messages */
include_once(SM_PATH . 'functions/display_messages.php');
/**
* Check the preferences into the session cache.
* @param string $data_dir
* @param string $username
* @since 1.1.3
*/
function cachePrefValues($data_dir, $username) {
global $prefs_are_cached, $prefs_cache;
sqgetGlobalVar('prefs_are_cached', $prefs_are_cached, SQ_SESSION );
if ( isset($prefs_are_cached) && $prefs_are_cached) {
sqgetGlobalVar('prefs_cache', $prefs_cache, SQ_SESSION );
return;
}
sqsession_unregister('prefs_cache');
sqsession_unregister('prefs_are_cached');
/* Calculate the filename for the user's preference file */
$filename = getHashedFile($username, $data_dir, "$username.pref");
/* A call to checkForPrefs here should take eliminate the need for */
/* this to be called throughout the rest of the SquirrelMail code. */
checkForPrefs($data_dir, $username, $filename);
/* Make sure that the preference file now DOES exist. */
if (!file_exists($filename)) {
logout_error( sprintf( _("Preference file, %s, does not exist. Log out, and log back in to create a default preference file."), $filename) );
exit;
}
/* Open the file, or else display an error to the user. */
if(!$file = @fopen($filename, 'r'))
{
logout_error( sprintf( _("Preference file, %s, could not be opened. Contact your system administrator to resolve this issue."), $filename) );
exit;
}
/* Read in the preferences. */
$highlight_num = 0;
while (! feof($file)) {
$pref = '';
/* keep reading a pref until we reach an eol (\n (or \r for macs)) */
while($read = fgets($file, 1024))
{
$pref .= $read;
if(strpos($read,"\n") || strpos($read,"\r"))
break;
}
$pref = trim($pref);
$equalsAt = strpos($pref, '=');
if ($equalsAt > 0) {
$key = substr($pref, 0, $equalsAt);
$value = substr($pref, $equalsAt + 1);
/* this is to 'rescue' old-style highlighting rules. */
if (substr($key, 0, 9) == 'highlight') {
$key = 'highlight' . $highlight_num;
$highlight_num ++;
}
if ($value != '') {
$prefs_cache[$key] = $value;
}
}
}
fclose($file);
$prefs_are_cached = TRUE;
sqsession_register($prefs_cache, 'prefs_cache');
sqsession_register($prefs_are_cached, 'prefs_are_cached');
}
/**
* Return the value for the preference given by $string.
* @param string $data_dir data directory
* @param string $username user name
* @param string $string preference name
* @param string $default (since 1.2.0) default preference value
* @return mixed
*/
function getPref($data_dir, $username, $string, $default = '') {
global $prefs_cache;
$result = do_hook_function('get_pref_override',array($username,$string));
if (!$result) {
cachePrefValues($data_dir, $username);
if (isset($prefs_cache[$string])) {
$result = $prefs_cache[$string];
} else {
$result = do_hook_function('get_pref', array($username,$string));
if (!$result) {
$result = $default;
}
}
}
return ($result);
}
/**
* Save the preferences for this user.
* @param string $data_dir data directory
* @param string $username user name
* @since 1.1.3
*/
function savePrefValues($data_dir, $username) {
global $prefs_cache;
$filename = getHashedFile($username, $data_dir, "$username.pref");
/* Open the file for writing, or else display an error to the user. */
if(!$file = @fopen($filename.'.tmp', 'w'))
{
logout_error( sprintf( _("Preference file, %s, could not be opened. Contact your system administrator to resolve this issue."), $filename.'.tmp') );
exit;
}
foreach ($prefs_cache as $Key => $Value) {
if (isset($Value)) {
if ( sq_fwrite($file, $Key . '=' . $Value . "\n") === FALSE ) {
logout_error( sprintf( _("Preference file, %s, could not be written. Contact your system administrator to resolve this issue.") , $filename . '.tmp') );
exit;
}
}
}
fclose($file);
if (! @copy($filename . '.tmp',$filename) ) {
logout_error( sprintf( _("Preference file, %s, could not be copied from temporary file, %s. Contact your system administrator to resolve this issue."), $filename, $filename . '.tmp') );
exit;
}
@unlink($filename . '.tmp');
@chmod($filename, 0600);
sqsession_register($prefs_cache , 'prefs_cache');
}
/**
* Remove a preference for the current user.
* @param string $data_dir data directory
* @param string $username user name
* @param string $string preference name
*/
function removePref($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.
* @param string $data_dir data directory
* @param string $username user name
* @param string $string preference name
* @param mixed $value preference value
*/
function setPref($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.
* @param string $data_dir data directory
* @param string $username user name
* @param string $filename (since 1.2.0) preference file name.
* detects file name, if set to empty string.
*/
function checkForPrefs($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($filename) ) {
/* If it does not exist, check for default_prefs */
/* First, check legacy locations: data dir */
if(substr($data_dir,-1) != '/') {
$data_dir .= '/';
}
$default_pref = $data_dir . 'default_pref';
/* or legacy location: internal data dir */
if (!@file_exists($default_pref)) {
$default_pref = SM_PATH . 'data/default_pref';
}
/* If no legacies, check where we'd expect it to be located:
* under config/ */
if (!@file_exists($default_pref)) {
$default_pref = SM_PATH . 'config/default_pref';
}
/* If a default_pref file found, try to copy it, if none found,
* try to create an empty one. If that fails, report an error.
*/
if (
( is_readable($default_pref) && !@copy($default_pref, $filename) ) ||
!@touch($filename)
) {
$uid = 'httpd';
if (function_exists('posix_getuid')){
$user_data = posix_getpwuid(posix_getuid());
$uid = $user_data['name'];
}
$errTitle = _("Could not create initial preference file!");
$errString = $errTitle . "<br />\n" .
sprintf( _("%s should be writable by user %s"), $data_dir, $uid ) . "<br />\n" .
_("Please contact your system administrator and report this error.") . "<br />\n";
logout_error( $errString, $errTitle );
exit;
}
}
}
/**
* Write the User Signature.
* @param string $data_dir data directory
* @param string $username user name
* @param integer $number (since 1.2.5) identity number.
* parameter was used for signature text before 1.2.5.
* @param string $value (since 1.2.5) signature text
*/
function setSig($data_dir, $username, $number, $value) {
// Limit signature size to 64KB (database BLOB limit)
if (strlen($value)>65536) {
error_option_save(_("Signature is too big."));
return;
}
$filename = getHashedFile($username, $data_dir, "$username.si$number");
/* Open the file for writing, or else display an error to the user. */
if(!$file = @fopen("$filename.tmp", 'w')) {
logout_error( sprintf( _("Signature file, %s, could not be opened. Contact your system administrator to resolve this issue."), $filename . '.tmp') );
exit;
}
if ( sq_fwrite($file, $value) === FALSE ) {
logout_error( sprintf( _("Signature file, %s, could not be written. Contact your system administrator to resolve this issue.") , $filename . '.tmp'));
exit;
}
fclose($file);
if (! @copy($filename . '.tmp',$filename) ) {
logout_error( sprintf( _("Signature file, %s, could not be copied from temporary file, %s. Contact your system administrator to resolve this issue."), $filename, $filename . '.tmp') );
exit;
}
@unlink($filename . '.tmp');
@chmod($filename, 0600);
}
/**
* Get the signature.
* @param string $data_dir data directory
* @param string $username user name
* @param integer $number (since 1.2.5) identity number
* @return string signature
*/
function getSig($data_dir, $username, $number) {
$filename = getHashedFile($username, $data_dir, "$username.si$number");
$sig = '';
if (file_exists($filename)) {
/* Open the file, or else display an error to the user. */
if(!$file = @fopen($filename, 'r'))
{
logout_error( sprintf( _("Signature file, %s, could not be opened. Contact your system administrator to resolve this issue."), $filename) );
exit;
}
while (!feof($file)) {
$sig .= fgets($file, 1024);
}
fclose($file);
}
return $sig;
}
// vim: et ts=4
?>
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