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<?php
/*
+-----------------------------------------------------------------------+
| program/include/rcube_config.php |
| |
| This file is part of the Roundcube Webmail client |
| Copyright (C) 2008-2010, The Roundcube Dev Team |
| Licensed under the GNU GPL |
| |
| PURPOSE: |
| Class to read configuration settings |
| |
+-----------------------------------------------------------------------+
| Author: Thomas Bruederli <roundcube@gmail.com> |
+-----------------------------------------------------------------------+
$Id: rcube_config.php 5499 2011-11-28 09:03:27Z alec $
*/
/**
* Configuration class for Roundcube
*
* @package Core
*/
class rcube_config
{
private $prop = array();
private $errors = array();
private $userprefs = array();
/**
* Object constructor
*/
public function __construct()
{
$this->load();
}
/**
* Load config from local config file
*
* @todo Remove global $CONFIG
*/
private function load()
{
// load main config file
if (!$this->load_from_file(RCMAIL_CONFIG_DIR . '/main.inc.php'))
$this->errors[] = 'main.inc.php was not found.';
// load database config
if (!$this->load_from_file(RCMAIL_CONFIG_DIR . '/db.inc.php'))
$this->errors[] = 'db.inc.php was not found.';
// load host-specific configuration
$this->load_host_config();
// set skin (with fallback to old 'skin_path' property)
if (empty($this->prop['skin']) && !empty($this->prop['skin_path']))
$this->prop['skin'] = str_replace('skins/', '', unslashify($this->prop['skin_path']));
else if (empty($this->prop['skin']))
$this->prop['skin'] = 'default';
// fix paths
$this->prop['log_dir'] = $this->prop['log_dir'] ? realpath(unslashify($this->prop['log_dir'])) : INSTALL_PATH . 'logs';
$this->prop['temp_dir'] = $this->prop['temp_dir'] ? realpath(unslashify($this->prop['temp_dir'])) : INSTALL_PATH . 'temp';
// fix default imap folders encoding
foreach (array('drafts_mbox', 'junk_mbox', 'sent_mbox', 'trash_mbox') as $folder)
$this->prop[$folder] = rcube_charset_convert($this->prop[$folder], RCMAIL_CHARSET, 'UTF7-IMAP');
if (!empty($this->prop['default_imap_folders']))
foreach ($this->prop['default_imap_folders'] as $n => $folder)
$this->prop['default_imap_folders'][$n] = rcube_charset_convert($folder, RCMAIL_CHARSET, 'UTF7-IMAP');
// set PHP error logging according to config
if ($this->prop['debug_level'] & 1) {
ini_set('log_errors', 1);
if ($this->prop['log_driver'] == 'syslog') {
ini_set('error_log', 'syslog');
}
else {
ini_set('error_log', $this->prop['log_dir'].'/errors');
}
}
// enable display_errors in 'show' level, but not for ajax requests
ini_set('display_errors', intval(empty($_REQUEST['_remote']) && ($this->prop['debug_level'] & 4)));
// set timezone auto settings values
if ($this->prop['timezone'] == 'auto') {
$this->prop['dst_active'] = intval(date('I'));
$this->prop['_timezone_value'] = date('Z') / 3600 - $this->prop['dst_active'];
}
else if ($this->prop['dst_active'] === null) {
$this->prop['dst_active'] = intval(date('I'));
}
// export config data
$GLOBALS['CONFIG'] = &$this->prop;
}
/**
* Load a host-specific config file if configured
* This will merge the host specific configuration with the given one
*/
private function load_host_config()
{
$fname = null;
if (is_array($this->prop['include_host_config'])) {
$fname = $this->prop['include_host_config'][$_SERVER['HTTP_HOST']];
}
else if (!empty($this->prop['include_host_config'])) {
$fname = preg_replace('/[^a-z0-9\.\-_]/i', '', $_SERVER['HTTP_HOST']) . '.inc.php';
}
if ($fname) {
$this->load_from_file(RCMAIL_CONFIG_DIR . '/' . $fname);
}
}
/**
* Read configuration from a file
* and merge with the already stored config values
*
* @param string $fpath Full path to the config file to be loaded
* @return booelan True on success, false on failure
*/
public function load_from_file($fpath)
{
if (is_file($fpath) && is_readable($fpath)) {
// use output buffering, we don't need any output here
ob_start();
include($fpath);
ob_end_clean();
if (is_array($rcmail_config)) {
$this->prop = array_merge($this->prop, $rcmail_config, $this->userprefs);
return true;
}
}
return false;
}
/**
* Getter for a specific config parameter
*
* @param string $name Parameter name
* @param mixed $def Default value if not set
* @return mixed The requested config value
*/
public function get($name, $def = null)
{
$result = isset($this->prop[$name]) ? $this->prop[$name] : $def;
$rcmail = rcmail::get_instance();
if ($name == 'timezone' && isset($this->prop['_timezone_value']))
$result = $this->prop['_timezone_value'];
if (is_object($rcmail->plugins)) {
$plugin = $rcmail->plugins->exec_hook('config_get', array(
'name' => $name, 'default' => $def, 'result' => $result));
return $plugin['result'];
}
return $result;
}
/**
* Setter for a config parameter
*
* @param string $name Parameter name
* @param mixed $value Parameter value
*/
public function set($name, $value)
{
$this->prop[$name] = $value;
}
/**
* Override config options with the given values (eg. user prefs)
*
* @param array $prefs Hash array with config props to merge over
*/
public function merge($prefs)
{
$this->prop = array_merge($this->prop, $prefs, $this->userprefs);
}
/**
* Merge the given prefs over the current config
* and make sure that they survive further merging.
*
* @param array $prefs Hash array with user prefs
*/
public function set_user_prefs($prefs)
{
// Honor the dont_override setting for any existing user preferences
$dont_override = $this->get('dont_override');
if (is_array($dont_override) && !empty($dont_override)) {
foreach ($prefs as $key => $pref) {
if (in_array($key, $dont_override)) {
unset($prefs[$key]);
}
}
}
$this->userprefs = $prefs;
$this->prop = array_merge($this->prop, $prefs);
// override timezone settings with client values
if ($this->prop['timezone'] == 'auto') {
$this->prop['_timezone_value'] = isset($_SESSION['timezone']) ? $_SESSION['timezone'] : $this->prop['_timezone_value'];
$this->prop['dst_active'] = $this->userprefs['dst_active'] = isset($_SESSION['dst_active']) ? $_SESSION['dst_active'] : $this->prop['dst_active'];
}
else if (isset($this->prop['_timezone_value']))
unset($this->prop['_timezone_value']);
}
/**
* Getter for all config options
*
* @return array Hash array containg all config properties
*/
public function all()
{
return $this->prop;
}
/**
* Special getter for user's timezone offset including DST
*
* @return float Timezone offset (in hours)
*/
public function get_timezone()
{
return floatval($this->get('timezone')) + intval($this->get('dst_active'));
}
/**
* Return requested DES crypto key.
*
* @param string $key Crypto key name
* @return string Crypto key
*/
public function get_crypto_key($key)
{
// Bomb out if the requested key does not exist
if (!array_key_exists($key, $this->prop)) {
raise_error(array(
'code' => 500, 'type' => 'php',
'file' => __FILE__, 'line' => __LINE__,
'message' => "Request for unconfigured crypto key \"$key\""
), true, true);
}
$key = $this->prop[$key];
// Bomb out if the configured key is not exactly 24 bytes long
if (strlen($key) != 24) {
raise_error(array(
'code' => 500, 'type' => 'php',
'file' => __FILE__, 'line' => __LINE__,
'message' => "Configured crypto key '$key' is not exactly 24 bytes long"
), true, true);
}
return $key;
}
/**
* Try to autodetect operating system and find the correct line endings
*
* @return string The appropriate mail header delimiter
*/
public function header_delimiter()
{
// use the configured delimiter for headers
if (!empty($this->prop['mail_header_delimiter'])) {
$delim = $this->prop['mail_header_delimiter'];
if ($delim == "\n" || $delim == "\r\n")
return $delim;
else
raise_error(array(
'code' => 500, 'type' => 'php',
'file' => __FILE__, 'line' => __LINE__,
'message' => "Invalid mail_header_delimiter setting"
), true, false);
}
$php_os = strtolower(substr(PHP_OS, 0, 3));
if ($php_os == 'win')
return "\r\n";
if ($php_os == 'mac')
return "\r\n";
return "\n";
}
/**
* Return the mail domain configured for the given host
*
* @param string $host IMAP host
* @param boolean $encode If true, domain name will be converted to IDN ASCII
* @return string Resolved SMTP host
*/
public function mail_domain($host, $encode=true)
{
$domain = $host;
if (is_array($this->prop['mail_domain'])) {
if (isset($this->prop['mail_domain'][$host]))
$domain = $this->prop['mail_domain'][$host];
}
else if (!empty($this->prop['mail_domain']))
$domain = rcube_parse_host($this->prop['mail_domain']);
if ($encode)
$domain = rcube_idn_to_ascii($domain);
return $domain;
}
/**
* Getter for error state
*
* @return mixed Error message on error, False if no errors
*/
public function get_error()
{
return empty($this->errors) ? false : join("\n", $this->errors);
}
}
