diff options
author | Aleksander Machniak <alec@alec.pl> | 2012-11-21 19:52:03 +0100 |
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committer | Aleksander Machniak <alec@alec.pl> | 2012-11-21 19:52:03 +0100 |
commit | ba6f21caeb405c7e8512a09941fefbc97286e45f (patch) | |
tree | 4a0e8f6fbab3260d37bf85cbf0bc9f506e627678 /program/lib/Roundcube/rcube.php | |
parent | f707fec0001d7dc7d46be114c42b37e49a052660 (diff) |
Framework files moved to lib/Roundcube
Diffstat (limited to 'program/lib/Roundcube/rcube.php')
-rw-r--r-- | program/lib/Roundcube/rcube.php | 1227 |
1 files changed, 1227 insertions, 0 deletions
diff --git a/program/lib/Roundcube/rcube.php b/program/lib/Roundcube/rcube.php new file mode 100644 index 000000000..9c1a6d84a --- /dev/null +++ b/program/lib/Roundcube/rcube.php @@ -0,0 +1,1227 @@ +<?php + +/* + +-----------------------------------------------------------------------+ + | program/include/rcube.php | + | | + | This file is part of the Roundcube Webmail client | + | Copyright (C) 2008-2012, The Roundcube Dev Team | + | Copyright (C) 2011-2012, Kolab Systems AG | + | | + | Licensed under the GNU General Public License version 3 or | + | any later version with exceptions for skins & plugins. | + | See the README file for a full license statement. | + | | + | PURPOSE: | + | Framework base class providing core functions and holding | + | instances of all 'global' objects like db- and storage-connections | + +-----------------------------------------------------------------------+ + | Author: Thomas Bruederli <roundcube@gmail.com> | + +-----------------------------------------------------------------------+ +*/ + + +/** + * Base class of the Roundcube Framework + * implemented as singleton + * + * @package Framework + * @subpackage Core + */ +class rcube +{ + const INIT_WITH_DB = 1; + const INIT_WITH_PLUGINS = 2; + + /** + * Singleton instace of rcube + * + * @var rcmail + */ + static protected $instance; + + /** + * Stores instance of rcube_config. + * + * @var rcube_config + */ + public $config; + + /** + * Instace of database class. + * + * @var rcube_db + */ + public $db; + + /** + * Instace of Memcache class. + * + * @var Memcache + */ + public $memcache; + + /** + * Instace of rcube_session class. + * + * @var rcube_session + */ + public $session; + + /** + * Instance of rcube_smtp class. + * + * @var rcube_smtp + */ + public $smtp; + + /** + * Instance of rcube_storage class. + * + * @var rcube_storage + */ + public $storage; + + /** + * Instance of rcube_output class. + * + * @var rcube_output + */ + public $output; + + /** + * Instance of rcube_plugin_api. + * + * @var rcube_plugin_api + */ + public $plugins; + + + /* private/protected vars */ + protected $texts; + protected $caches = array(); + protected $shutdown_functions = array(); + protected $expunge_cache = false; + + + /** + * This implements the 'singleton' design pattern + * + * @param integer Options to initialize with this instance. See rcube::INIT_WITH_* constants + * + * @return rcube The one and only instance + */ + static function get_instance($mode = 0) + { + if (!self::$instance) { + self::$instance = new rcube(); + self::$instance->init($mode); + } + + return self::$instance; + } + + + /** + * Private constructor + */ + protected function __construct() + { + // load configuration + $this->config = new rcube_config; + $this->plugins = new rcube_dummy_plugin_api; + + register_shutdown_function(array($this, 'shutdown')); + } + + + /** + * Initial startup function + */ + protected function init($mode = 0) + { + // initialize syslog + if ($this->config->get('log_driver') == 'syslog') { + $syslog_id = $this->config->get('syslog_id', 'roundcube'); + $syslog_facility = $this->config->get('syslog_facility', LOG_USER); + openlog($syslog_id, LOG_ODELAY, $syslog_facility); + } + + // connect to database + if ($mode & self::INIT_WITH_DB) { + $this->get_dbh(); + } + + // create plugin API and load plugins + if ($mode & self::INIT_WITH_PLUGINS) { + $this->plugins = rcube_plugin_api::get_instance(); + } + } + + + /** + * Get the current database connection + * + * @return rcube_db Database object + */ + public function get_dbh() + { + if (!$this->db) { + $config_all = $this->config->all(); + $this->db = rcube_db::factory($config_all['db_dsnw'], $config_all['db_dsnr'], $config_all['db_persistent']); + $this->db->set_debug((bool)$config_all['sql_debug']); + } + + return $this->db; + } + + + /** + * Get global handle for memcache access + * + * @return object Memcache + */ + public function get_memcache() + { + if (!isset($this->memcache)) { + // no memcache support in PHP + if (!class_exists('Memcache')) { + $this->memcache = false; + return false; + } + + $this->memcache = new Memcache; + $this->mc_available = 0; + + // add all configured hosts to pool + $pconnect = $this->config->get('memcache_pconnect', true); + foreach ($this->config->get('memcache_hosts', array()) as $host) { + if (substr($host, 0, 7) != 'unix://') { + list($host, $port) = explode(':', $host); + if (!$port) $port = 11211; + } + else { + $port = 0; + } + + $this->mc_available += intval($this->memcache->addServer( + $host, $port, $pconnect, 1, 1, 15, false, array($this, 'memcache_failure'))); + } + + // test connection and failover (will result in $this->mc_available == 0 on complete failure) + $this->memcache->increment('__CONNECTIONTEST__', 1); // NOP if key doesn't exist + + if (!$this->mc_available) { + $this->memcache = false; + } + } + + return $this->memcache; + } + + + /** + * Callback for memcache failure + */ + public function memcache_failure($host, $port) + { + static $seen = array(); + + // only report once + if (!$seen["$host:$port"]++) { + $this->mc_available--; + self::raise_error(array( + 'code' => 604, 'type' => 'db', + 'line' => __LINE__, 'file' => __FILE__, + 'message' => "Memcache failure on host $host:$port"), + true, false); + } + } + + + /** + * Initialize and get cache object + * + * @param string $name Cache identifier + * @param string $type Cache type ('db', 'apc' or 'memcache') + * @param string $ttl Expiration time for cache items + * @param bool $packed Enables/disables data serialization + * + * @return rcube_cache Cache object + */ + public function get_cache($name, $type='db', $ttl=0, $packed=true) + { + if (!isset($this->caches[$name]) && ($userid = $this->get_user_id())) { + $this->caches[$name] = new rcube_cache($type, $userid, $name, $ttl, $packed); + } + + return $this->caches[$name]; + } + + + /** + * Create SMTP object and connect to server + * + * @param boolean True if connection should be established + */ + public function smtp_init($connect = false) + { + $this->smtp = new rcube_smtp(); + + if ($connect) { + $this->smtp->connect(); + } + } + + + /** + * Initialize and get storage object + * + * @return rcube_storage Storage object + */ + public function get_storage() + { + // already initialized + if (!is_object($this->storage)) { + $this->storage_init(); + } + + return $this->storage; + } + + + /** + * Initialize storage object + */ + public function storage_init() + { + // already initialized + if (is_object($this->storage)) { + return; + } + + $driver = $this->config->get('storage_driver', 'imap'); + $driver_class = "rcube_{$driver}"; + + if (!class_exists($driver_class)) { + self::raise_error(array( + 'code' => 700, 'type' => 'php', + 'file' => __FILE__, 'line' => __LINE__, + 'message' => "Storage driver class ($driver) not found!"), + true, true); + } + + // Initialize storage object + $this->storage = new $driver_class; + + // for backward compat. (deprecated, will be removed) + $this->imap = $this->storage; + + // enable caching of mail data + $storage_cache = $this->config->get("{$driver}_cache"); + $messages_cache = $this->config->get('messages_cache'); + // for backward compatybility + if ($storage_cache === null && $messages_cache === null && $this->config->get('enable_caching')) { + $storage_cache = 'db'; + $messages_cache = true; + } + + if ($storage_cache) { + $this->storage->set_caching($storage_cache); + } + if ($messages_cache) { + $this->storage->set_messages_caching(true); + } + + // set pagesize from config + $pagesize = $this->config->get('mail_pagesize'); + if (!$pagesize) { + $pagesize = $this->config->get('pagesize', 50); + } + $this->storage->set_pagesize($pagesize); + + // set class options + $options = array( + 'auth_type' => $this->config->get("{$driver}_auth_type", 'check'), + 'auth_cid' => $this->config->get("{$driver}_auth_cid"), + 'auth_pw' => $this->config->get("{$driver}_auth_pw"), + 'debug' => (bool) $this->config->get("{$driver}_debug"), + 'force_caps' => (bool) $this->config->get("{$driver}_force_caps"), + 'timeout' => (int) $this->config->get("{$driver}_timeout"), + 'skip_deleted' => (bool) $this->config->get('skip_deleted'), + 'driver' => $driver, + ); + + if (!empty($_SESSION['storage_host'])) { + $options['host'] = $_SESSION['storage_host']; + $options['user'] = $_SESSION['username']; + $options['port'] = $_SESSION['storage_port']; + $options['ssl'] = $_SESSION['storage_ssl']; + $options['password'] = $this->decrypt($_SESSION['password']); + $_SESSION[$driver.'_host'] = $_SESSION['storage_host']; + } + + $options = $this->plugins->exec_hook("storage_init", $options); + + // for backward compat. (deprecated, to be removed) + $options = $this->plugins->exec_hook("imap_init", $options); + + $this->storage->set_options($options); + $this->set_storage_prop(); + } + + + /** + * Set storage parameters. + * This must be done AFTER connecting to the server! + */ + protected function set_storage_prop() + { + $storage = $this->get_storage(); + + $storage->set_charset($this->config->get('default_charset', RCMAIL_CHARSET)); + + if ($default_folders = $this->config->get('default_folders')) { + $storage->set_default_folders($default_folders); + } + if (isset($_SESSION['mbox'])) { + $storage->set_folder($_SESSION['mbox']); + } + if (isset($_SESSION['page'])) { + $storage->set_page($_SESSION['page']); + } + } + + + /** + * Create session object and start the session. + */ + public function session_init() + { + // session started (Installer?) + if (session_id()) { + return; + } + + $sess_name = $this->config->get('session_name'); + $sess_domain = $this->config->get('session_domain'); + $sess_path = $this->config->get('session_path'); + $lifetime = $this->config->get('session_lifetime', 0) * 60; + + // set session domain + if ($sess_domain) { + ini_set('session.cookie_domain', $sess_domain); + } + // set session path + if ($sess_path) { + ini_set('session.cookie_path', $sess_path); + } + // set session garbage collecting time according to session_lifetime + if ($lifetime) { + ini_set('session.gc_maxlifetime', $lifetime * 2); + } + + ini_set('session.cookie_secure', rcube_utils::https_check()); + ini_set('session.name', $sess_name ? $sess_name : 'roundcube_sessid'); + ini_set('session.use_cookies', 1); + ini_set('session.use_only_cookies', 1); + ini_set('session.serialize_handler', 'php'); + ini_set('session.cookie_httponly', 1); + + // use database for storing session data + $this->session = new rcube_session($this->get_dbh(), $this->config); + + $this->session->register_gc_handler(array($this, 'temp_gc')); + $this->session->register_gc_handler(array($this, 'cache_gc')); + + $this->session->set_secret($this->config->get('des_key') . dirname($_SERVER['SCRIPT_NAME'])); + $this->session->set_ip_check($this->config->get('ip_check')); + + // start PHP session (if not in CLI mode) + if ($_SERVER['REMOTE_ADDR']) { + session_start(); + } + } + + + /** + * Garbage collector function for temp files. + * Remove temp files older than two days + */ + public function temp_gc() + { + $tmp = unslashify($this->config->get('temp_dir')); + $expire = time() - 172800; // expire in 48 hours + + if ($tmp && ($dir = opendir($tmp))) { + while (($fname = readdir($dir)) !== false) { + if ($fname{0} == '.') { + continue; + } + + if (filemtime($tmp.'/'.$fname) < $expire) { + @unlink($tmp.'/'.$fname); + } + } + + closedir($dir); + } + } + + + /** + * Garbage collector for cache entries. + * Set flag to expunge caches on shutdown + */ + public function cache_gc() + { + // because this gc function is called before storage is initialized, + // we just set a flag to expunge storage cache on shutdown. + $this->expunge_cache = true; + } + + + /** + * Get localized text in the desired language + * + * @param mixed $attrib Named parameters array or label name + * @param string $domain Label domain (plugin) name + * + * @return string Localized text + */ + public function gettext($attrib, $domain=null) + { + // load localization files if not done yet + if (empty($this->texts)) { + $this->load_language(); + } + + // extract attributes + if (is_string($attrib)) { + $attrib = array('name' => $attrib); + } + + $name = $attrib['name'] ? $attrib['name'] : ''; + + // attrib contain text values: use them from now + if (($setval = $attrib[strtolower($_SESSION['language'])]) || ($setval = $attrib['en_us'])) { + $this->texts[$name] = $setval; + } + + // check for text with domain + if ($domain && ($text = $this->texts[$domain.'.'.$name])) { + } + // text does not exist + else if (!($text = $this->texts[$name])) { + return "[$name]"; + } + + // replace vars in text + if (is_array($attrib['vars'])) { + foreach ($attrib['vars'] as $var_key => $var_value) { + $text = str_replace($var_key[0]!='$' ? '$'.$var_key : $var_key, $var_value, $text); + } + } + + // format output + if (($attrib['uppercase'] && strtolower($attrib['uppercase'] == 'first')) || $attrib['ucfirst']) { + return ucfirst($text); + } + else if ($attrib['uppercase']) { + return mb_strtoupper($text); + } + else if ($attrib['lowercase']) { + return mb_strtolower($text); + } + + return strtr($text, array('\n' => "\n")); + } + + + /** + * Check if the given text label exists + * + * @param string $name Label name + * @param string $domain Label domain (plugin) name or '*' for all domains + * @param string $ref_domain Sets domain name if label is found + * + * @return boolean True if text exists (either in the current language or in en_US) + */ + public function text_exists($name, $domain = null, &$ref_domain = null) + { + // load localization files if not done yet + if (empty($this->texts)) { + $this->load_language(); + } + + if (isset($this->texts[$name])) { + $ref_domain = ''; + return true; + } + + // any of loaded domains (plugins) + if ($domain == '*') { + foreach ($this->plugins->loaded_plugins() as $domain) { + if (isset($this->texts[$domain.'.'.$name])) { + $ref_domain = $domain; + return true; + } + } + } + // specified domain + else if ($domain) { + $ref_domain = $domain; + return isset($this->texts[$domain.'.'.$name]); + } + + return false; + } + + + /** + * Load a localization package + * + * @param string Language ID + * @param array Additional text labels/messages + */ + public function load_language($lang = null, $add = array()) + { + $lang = $this->language_prop(($lang ? $lang : $_SESSION['language'])); + + // load localized texts + if (empty($this->texts) || $lang != $_SESSION['language']) { + $this->texts = array(); + + // handle empty lines after closing PHP tag in localization files + ob_start(); + + // get english labels (these should be complete) + @include(INSTALL_PATH . 'program/localization/en_US/labels.inc'); + @include(INSTALL_PATH . 'program/localization/en_US/messages.inc'); + + if (is_array($labels)) + $this->texts = $labels; + if (is_array($messages)) + $this->texts = array_merge($this->texts, $messages); + + // include user language files + if ($lang != 'en' && $lang != 'en_US' && is_dir(INSTALL_PATH . 'program/localization/' . $lang)) { + include_once(INSTALL_PATH . 'program/localization/' . $lang . '/labels.inc'); + include_once(INSTALL_PATH . 'program/localization/' . $lang . '/messages.inc'); + + if (is_array($labels)) + $this->texts = array_merge($this->texts, $labels); + if (is_array($messages)) + $this->texts = array_merge($this->texts, $messages); + } + + ob_end_clean(); + + $_SESSION['language'] = $lang; + } + + // append additional texts (from plugin) + if (is_array($add) && !empty($add)) { + $this->texts += $add; + } + } + + + /** + * Check the given string and return a valid language code + * + * @param string Language code + * + * @return string Valid language code + */ + protected function language_prop($lang) + { + static $rcube_languages, $rcube_language_aliases; + + // user HTTP_ACCEPT_LANGUAGE if no language is specified + if (empty($lang) || $lang == 'auto') { + $accept_langs = explode(',', $_SERVER['HTTP_ACCEPT_LANGUAGE']); + $lang = str_replace('-', '_', $accept_langs[0]); + } + + if (empty($rcube_languages)) { + @include(INSTALL_PATH . 'program/localization/index.inc'); + } + + // check if we have an alias for that language + if (!isset($rcube_languages[$lang]) && isset($rcube_language_aliases[$lang])) { + $lang = $rcube_language_aliases[$lang]; + } + // try the first two chars + else if (!isset($rcube_languages[$lang])) { + $short = substr($lang, 0, 2); + + // check if we have an alias for the short language code + if (!isset($rcube_languages[$short]) && isset($rcube_language_aliases[$short])) { + $lang = $rcube_language_aliases[$short]; + } + // expand 'nn' to 'nn_NN' + else if (!isset($rcube_languages[$short])) { + $lang = $short.'_'.strtoupper($short); + } + } + + if (!isset($rcube_languages[$lang]) || !is_dir(INSTALL_PATH . 'program/localization/' . $lang)) { + $lang = 'en_US'; + } + + return $lang; + } + + + /** + * Read directory program/localization and return a list of available languages + * + * @return array List of available localizations + */ + public function list_languages() + { + static $sa_languages = array(); + + if (!sizeof($sa_languages)) { + @include(INSTALL_PATH . 'program/localization/index.inc'); + + if ($dh = @opendir(INSTALL_PATH . 'program/localization')) { + while (($name = readdir($dh)) !== false) { + if ($name[0] == '.' || !is_dir(INSTALL_PATH . 'program/localization/' . $name)) { + continue; + } + + if ($label = $rcube_languages[$name]) { + $sa_languages[$name] = $label; + } + } + closedir($dh); + } + } + + return $sa_languages; + } + + + /** + * Encrypt using 3DES + * + * @param string $clear clear text input + * @param string $key encryption key to retrieve from the configuration, defaults to 'des_key' + * @param boolean $base64 whether or not to base64_encode() the result before returning + * + * @return string encrypted text + */ + public function encrypt($clear, $key = 'des_key', $base64 = true) + { + if (!$clear) { + return ''; + } + + /*- + * Add a single canary byte to the end of the clear text, which + * will help find out how much of padding will need to be removed + * upon decryption; see http://php.net/mcrypt_generic#68082 + */ + $clear = pack("a*H2", $clear, "80"); + + if (function_exists('mcrypt_module_open') && + ($td = mcrypt_module_open(MCRYPT_TripleDES, "", MCRYPT_MODE_CBC, "")) + ) { + $iv = $this->create_iv(mcrypt_enc_get_iv_size($td)); + mcrypt_generic_init($td, $this->config->get_crypto_key($key), $iv); + $cipher = $iv . mcrypt_generic($td, $clear); + mcrypt_generic_deinit($td); + mcrypt_module_close($td); + } + else { + @include_once 'des.inc'; + + if (function_exists('des')) { + $des_iv_size = 8; + $iv = $this->create_iv($des_iv_size); + $cipher = $iv . des($this->config->get_crypto_key($key), $clear, 1, 1, $iv); + } + else { + self::raise_error(array( + 'code' => 500, 'type' => 'php', + 'file' => __FILE__, 'line' => __LINE__, + 'message' => "Could not perform encryption; make sure Mcrypt is installed or lib/des.inc is available" + ), true, true); + } + } + + return $base64 ? base64_encode($cipher) : $cipher; + } + + + /** + * Decrypt 3DES-encrypted string + * + * @param string $cipher encrypted text + * @param string $key encryption key to retrieve from the configuration, defaults to 'des_key' + * @param boolean $base64 whether or not input is base64-encoded + * + * @return string decrypted text + */ + public function decrypt($cipher, $key = 'des_key', $base64 = true) + { + if (!$cipher) { + return ''; + } + + $cipher = $base64 ? base64_decode($cipher) : $cipher; + + if (function_exists('mcrypt_module_open') && + ($td = mcrypt_module_open(MCRYPT_TripleDES, "", MCRYPT_MODE_CBC, "")) + ) { + $iv_size = mcrypt_enc_get_iv_size($td); + $iv = substr($cipher, 0, $iv_size); + + // session corruption? (#1485970) + if (strlen($iv) < $iv_size) { + return ''; + } + + $cipher = substr($cipher, $iv_size); + mcrypt_generic_init($td, $this->config->get_crypto_key($key), $iv); + $clear = mdecrypt_generic($td, $cipher); + mcrypt_generic_deinit($td); + mcrypt_module_close($td); + } + else { + @include_once 'des.inc'; + + if (function_exists('des')) { + $des_iv_size = 8; + $iv = substr($cipher, 0, $des_iv_size); + $cipher = substr($cipher, $des_iv_size); + $clear = des($this->config->get_crypto_key($key), $cipher, 0, 1, $iv); + } + else { + self::raise_error(array( + 'code' => 500, 'type' => 'php', + 'file' => __FILE__, 'line' => __LINE__, + 'message' => "Could not perform decryption; make sure Mcrypt is installed or lib/des.inc is available" + ), true, true); + } + } + + /*- + * Trim PHP's padding and the canary byte; see note in + * rcube::encrypt() and http://php.net/mcrypt_generic#68082 + */ + $clear = substr(rtrim($clear, "\0"), 0, -1); + + return $clear; + } + + + /** + * Generates encryption initialization vector (IV) + * + * @param int Vector size + * + * @return string Vector string + */ + private function create_iv($size) + { + // mcrypt_create_iv() can be slow when system lacks entrophy + // we'll generate IV vector manually + $iv = ''; + for ($i = 0; $i < $size; $i++) { + $iv .= chr(mt_rand(0, 255)); + } + + return $iv; + } + + + /** + * Build a valid URL to this instance of Roundcube + * + * @param mixed Either a string with the action or url parameters as key-value pairs + * @return string Valid application URL + */ + public function url($p) + { + // STUB: should be overloaded by the application + return ''; + } + + + /** + * Function to be executed in script shutdown + * Registered with register_shutdown_function() + */ + public function shutdown() + { + foreach ($this->shutdown_functions as $function) { + call_user_func($function); + } + + if (is_object($this->smtp)) { + $this->smtp->disconnect(); + } + + foreach ($this->caches as $cache) { + if (is_object($cache)) { + $cache->close(); + } + } + + if (is_object($this->storage)) { + if ($this->expunge_cache) { + $this->storage->expunge_cache(); + } + $this->storage->close(); + } + } + + + /** + * Registers shutdown function to be executed on shutdown. + * The functions will be executed before destroying any + * objects like smtp, imap, session, etc. + * + * @param callback Function callback + */ + public function add_shutdown_function($function) + { + $this->shutdown_functions[] = $function; + } + + + /** + * Construct shell command, execute it and return output as string. + * Keywords {keyword} are replaced with arguments + * + * @param $cmd Format string with {keywords} to be replaced + * @param $values (zero, one or more arrays can be passed) + * + * @return output of command. shell errors not detectable + */ + public static function exec(/* $cmd, $values1 = array(), ... */) + { + $args = func_get_args(); + $cmd = array_shift($args); + $values = $replacements = array(); + + // merge values into one array + foreach ($args as $arg) { + $values += (array)$arg; + } + + preg_match_all('/({(-?)([a-z]\w*)})/', $cmd, $matches, PREG_SET_ORDER); + foreach ($matches as $tags) { + list(, $tag, $option, $key) = $tags; + $parts = array(); + + if ($option) { + foreach ((array)$values["-$key"] as $key => $value) { + if ($value === true || $value === false || $value === null) { + $parts[] = $value ? $key : ""; + } + else { + foreach ((array)$value as $val) { + $parts[] = "$key " . escapeshellarg($val); + } + } + } + } + else { + foreach ((array)$values[$key] as $value) { + $parts[] = escapeshellarg($value); + } + } + + $replacements[$tag] = join(" ", $parts); + } + + // use strtr behaviour of going through source string once + $cmd = strtr($cmd, $replacements); + + return (string)shell_exec($cmd); + } + + + /** + * Print or write debug messages + * + * @param mixed Debug message or data + */ + public static function console() + { + $args = func_get_args(); + + if (class_exists('rcube', false)) { + $rcube = self::get_instance(); + $plugin = $rcube->plugins->exec_hook('console', array('args' => $args)); + if ($plugin['abort']) { + return; + } + $args = $plugin['args']; + } + + $msg = array(); + foreach ($args as $arg) { + $msg[] = !is_string($arg) ? var_export($arg, true) : $arg; + } + + self::write_log('console', join(";\n", $msg)); + } + + + /** + * Append a line to a logfile in the logs directory. + * Date will be added automatically to the line. + * + * @param $name name of log file + * @param line Line to append + */ + public static function write_log($name, $line) + { + if (!is_string($line)) { + $line = var_export($line, true); + } + + $date_format = self::$instance ? self::$instance->config->get('log_date_format') : null; + $log_driver = self::$instance ? self::$instance->config->get('log_driver') : null; + + if (empty($date_format)) { + $date_format = 'd-M-Y H:i:s O'; + } + + $date = date($date_format); + + // trigger logging hook + if (is_object(self::$instance) && is_object(self::$instance->plugins)) { + $log = self::$instance->plugins->exec_hook('write_log', array('name' => $name, 'date' => $date, 'line' => $line)); + $name = $log['name']; + $line = $log['line']; + $date = $log['date']; + if ($log['abort']) + return true; + } + + if ($log_driver == 'syslog') { + $prio = $name == 'errors' ? LOG_ERR : LOG_INFO; + syslog($prio, $line); + return true; + } + + // log_driver == 'file' is assumed here + + $line = sprintf("[%s]: %s\n", $date, $line); + $log_dir = self::$instance ? self::$instance->config->get('log_dir') : null; + + if (empty($log_dir)) { + $log_dir = INSTALL_PATH . 'logs'; + } + + // try to open specific log file for writing + $logfile = $log_dir.'/'.$name; + + if ($fp = @fopen($logfile, 'a')) { + fwrite($fp, $line); + fflush($fp); + fclose($fp); + return true; + } + + trigger_error("Error writing to log file $logfile; Please check permissions", E_USER_WARNING); + return false; + } + + + /** + * Throw system error (and show error page). + * + * @param array Named parameters + * - code: Error code (required) + * - type: Error type [php|db|imap|javascript] (required) + * - message: Error message + * - file: File where error occured + * - line: Line where error occured + * @param boolean True to log the error + * @param boolean Terminate script execution + */ + public static function raise_error($arg = array(), $log = false, $terminate = false) + { + // handle PHP exceptions + if (is_object($arg) && is_a($arg, 'Exception')) { + $err = array( + 'type' => 'php', + 'code' => $arg->getCode(), + 'line' => $arg->getLine(), + 'file' => $arg->getFile(), + 'message' => $arg->getMessage(), + ); + $arg = $err; + } + + // installer + if (class_exists('rcube_install', false)) { + $rci = rcube_install::get_instance(); + $rci->raise_error($arg); + return; + } + + if (($log || $terminate) && $arg['type'] && $arg['message']) { + $arg['fatal'] = $terminate; + self::log_bug($arg); + } + + // display error page and terminate script + if ($terminate && is_object(self::$instance->output)) { + self::$instance->output->raise_error($arg['code'], $arg['message']); + } + } + + + /** + * Report error according to configured debug_level + * + * @param array Named parameters + * @see self::raise_error() + */ + public static function log_bug($arg_arr) + { + $program = strtoupper($arg_arr['type']); + $level = self::get_instance()->config->get('debug_level'); + + // disable errors for ajax requests, write to log instead (#1487831) + if (($level & 4) && !empty($_REQUEST['_remote'])) { + $level = ($level ^ 4) | 1; + } + + // write error to local log file + if (($level & 1) || !empty($arg_arr['fatal'])) { + if ($_SERVER['REQUEST_METHOD'] == 'POST') { + $post_query = '?_task='.urlencode($_POST['_task']).'&_action='.urlencode($_POST['_action']); + } + else { + $post_query = ''; + } + + $log_entry = sprintf("%s Error: %s%s (%s %s)", + $program, + $arg_arr['message'], + $arg_arr['file'] ? sprintf(' in %s on line %d', $arg_arr['file'], $arg_arr['line']) : '', + $_SERVER['REQUEST_METHOD'], + $_SERVER['REQUEST_URI'] . $post_query); + + if (!self::write_log('errors', $log_entry)) { + // send error to PHPs error handler if write_log didn't succeed + trigger_error($arg_arr['message']); + } + } + + // report the bug to the global bug reporting system + if ($level & 2) { + // TODO: Send error via HTTP + } + + // show error if debug_mode is on + if ($level & 4) { + print "<b>$program Error"; + + if (!empty($arg_arr['file']) && !empty($arg_arr['line'])) { + print " in $arg_arr[file] ($arg_arr[line])"; + } + + print ':</b> '; + print nl2br($arg_arr['message']); + print '<br />'; + flush(); + } + } + + + /** + * Returns current time (with microseconds). + * + * @return float Current time in seconds since the Unix + */ + public static function timer() + { + return microtime(true); + } + + + /** + * Logs time difference according to provided timer + * + * @param float $timer Timer (self::timer() result) + * @param string $label Log line prefix + * @param string $dest Log file name + * + * @see self::timer() + */ + public static function print_timer($timer, $label = 'Timer', $dest = 'console') + { + static $print_count = 0; + + $print_count++; + $now = self::timer(); + $diff = $now - $timer; + + if (empty($label)) { + $label = 'Timer '.$print_count; + } + + self::write_log($dest, sprintf("%s: %0.4f sec", $label, $diff)); + } + + + /** + * Getter for logged user ID. + * + * @return mixed User identifier + */ + public function get_user_id() + { + if (is_object($this->user)) { + return $this->user->ID; + } + else if (isset($_SESSION['user_id'])) { + return $_SESSION['user_id']; + } + + return null; + } + + + /** + * Getter for logged user name. + * + * @return string User name + */ + public function get_user_name() + { + if (is_object($this->user)) { + return $this->user->get_username(); + } + + return null; + } +} + + +/** + * Lightweight plugin API class serving as a dummy if plugins are not enabled + * + * @package Core + */ +class rcube_dummy_plugin_api +{ + /** + * Triggers a plugin hook. + * @see rcube_plugin_api::exec_hook() + */ + public function exec_hook($hook, $args = array()) + { + return $args; + } +} |