164 lines
5.2 KiB
PHP
164 lines
5.2 KiB
PHP
<?php
|
|
|
|
/**
|
|
* prefs.php
|
|
*
|
|
* This contains functions for filebased user prefs locations
|
|
*
|
|
* @copyright 1999-2011 The SquirrelMail Project Team
|
|
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
|
|
* @version $Id: prefs.php 14084 2011-01-06 02:44:03Z pdontthink $
|
|
* @package squirrelmail
|
|
* @subpackage prefs
|
|
*/
|
|
|
|
/** Include global.php */
|
|
require_once(SM_PATH . 'functions/global.php');
|
|
require_once(SM_PATH . 'functions/plugin.php');
|
|
|
|
/** include this for error messages */
|
|
include_once(SM_PATH . 'functions/display_messages.php');
|
|
|
|
sqgetGlobalVar('prefs_cache', $prefs_cache, SQ_SESSION );
|
|
sqgetGlobalVar('prefs_are_cached', $prefs_are_cached, SQ_SESSION );
|
|
|
|
$rg = ini_get('register_globals');
|
|
|
|
if ( !sqsession_is_registered('prefs_are_cached') ||
|
|
!isset($prefs_cache) ||
|
|
!is_array($prefs_cache)
|
|
) {
|
|
$prefs_are_cached = false;
|
|
$prefs_cache = array();
|
|
}
|
|
|
|
$prefs_backend = do_hook_function('prefs_backend');
|
|
if (isset($prefs_backend) && !empty($prefs_backend) && file_exists(SM_PATH . $prefs_backend)) {
|
|
require_once(SM_PATH . $prefs_backend);
|
|
} elseif (isset($prefs_dsn) && !empty($prefs_dsn)) {
|
|
require_once(SM_PATH . 'functions/db_prefs.php');
|
|
} else {
|
|
require_once(SM_PATH . 'functions/file_prefs.php');
|
|
}
|
|
|
|
/* Hashing functions */
|
|
|
|
/**
|
|
* Given a username and datafilename, this will return the path to the
|
|
* hashed location of that datafile.
|
|
*
|
|
* @param string username the username of the current user
|
|
* @param string dir the squirrelmail datadir
|
|
* @param string datafile the name of the file to open
|
|
* @param bool hash_seach default true
|
|
* @return string the hashed location of datafile
|
|
*/
|
|
function getHashedFile($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, after we've removed unwanted characters. */
|
|
$datafile = str_replace('/', '_', $datafile);
|
|
$result = "$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);
|
|
}
|
|
|
|
/**
|
|
* Helper function for getHashedFile(), given a username returns
|
|
* the hashed dir for that username.
|
|
*
|
|
* NOTE that the hashed dir will be created if it doesn't
|
|
* already exist.
|
|
*
|
|
* @param string username the username of the current user
|
|
* @param string dir the squirrelmail datadir
|
|
* @param string hash_dirs default ''
|
|
* @return the path to the hash dir for username
|
|
*/
|
|
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."), $real_hash_dir) . '<br />' .
|
|
_("Could not create hashed directory structure!") . "<br />\n" .
|
|
_("Please contact your system administrator and report this error.") . "<br />\n";
|
|
exit;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* And return that directory. */
|
|
return ($real_hash_dir);
|
|
}
|
|
|
|
/**
|
|
* Helper function for getHashDir which does the actual hash calculation.
|
|
*
|
|
* @param string username the username to calculate the hash dir for
|
|
* @return array a list of hash dirs for this username
|
|
*/
|
|
function computeHashDirs($username) {
|
|
/* Compute the hash for this user and extract the hash directories. */
|
|
/* Note that the crc32() function result will be different on 32 and */
|
|
/* 64 bit systems, thus the hack below. */
|
|
$crc = crc32($username);
|
|
if ($crc & 0x80000000) {
|
|
$crc ^= 0xffffffff;
|
|
$crc += 1;
|
|
}
|
|
$hash = base_convert($crc, 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);
|
|
}
|
|
|