<?php
-
+/**
+ * @file src/App.php
+ */
namespace Friendica;
-use Friendica\Core\System;
+use Friendica\Core\Cache;
use Friendica\Core\Config;
+use Friendica\Core\L10n;
use Friendica\Core\PConfig;
-
-use Cache;
-use dba;
-use dbm;
+use Friendica\Core\System;
use Detection\MobileDetect;
use Exception;
+require_once 'boot.php';
+require_once 'include/text.php';
+
/**
*
* class: App
* before we spit the page out.
*
*/
-class App {
+class App
+{
+ const MODE_NORMAL = 0;
+ const MODE_INSTALL = 1;
+ const MODE_MAINTENANCE = 2;
public $module_loaded = false;
+ public $module_class = null;
public $query_string;
public $config;
public $page;
+ public $page_offset;
public $profile;
public $profile_uid;
public $user;
public $contacts;
public $page_contact;
public $content;
- public $data = array();
+ public $data = [];
public $error = false;
public $cmd;
public $argv;
public $argc;
public $module;
+ public $mode = App::MODE_NORMAL;
public $pager;
public $strings;
public $basepath;
public $hooks;
public $timezone;
public $interactive = true;
- public $plugins;
- public $apps = array();
+ public $addons;
+ public $addons_admin = [];
+ public $apps = [];
public $identities;
public $is_mobile = false;
public $is_tablet = false;
public $is_friendica_app;
- public $performance = array();
- public $callstack = array();
- public $theme_info = array();
+ public $performance = [];
+ public $callstack = [];
+ public $theme_info = [];
public $backend = true;
public $nav_sel;
public $category;
public $videowidth = 425;
public $videoheight = 350;
public $force_max_items = 0;
- public $theme_thread_allow = true;
public $theme_events_in_profile = true;
/**
* Mostly unimplemented yet. Only options 'template_engine' and
* beyond are used.
*/
- public $theme = array(
+ public $theme = [
'sourcename' => '',
'videowidth' => 425,
'videoheight' => 350,
'force_max_items' => 0,
- 'thread_allow' => true,
'stylesheet' => '',
'template_engine' => 'smarty3',
- );
+ ];
/**
* @brief An array of registered template engines ('name'=>'class name')
*/
- public $template_engines = array();
+ public $template_engines = [];
/**
* @brief An array of instanced template engines ('name'=>'instance')
*/
- public $template_engine_instance = array();
+ public $template_engine_instance = [];
public $process_id;
public $queue;
- private $ldelim = array(
+ private $ldelim = [
'internal' => '',
'smarty3' => '{{'
- );
- private $rdelim = array(
+ ];
+ private $rdelim = [
'internal' => '',
'smarty3' => '}}'
- );
+ ];
private $scheme;
private $hostname;
- private $db;
private $curl_code;
private $curl_content_type;
private $curl_headers;
- private $cached_profile_image;
- private $cached_profile_picdate;
private static $a;
/**
*
* @param string $basepath Path to the app base folder
*/
- function __construct($basepath) {
-
+ public function __construct($basepath)
+ {
global $default_timezone;
- $hostname = '';
+ if (!static::directory_usable($basepath, false)) {
+ throw new Exception('Basepath ' . $basepath . ' isn\'t usable.');
+ }
+
+ $this->basepath = rtrim($basepath, DIRECTORY_SEPARATOR);
- if (file_exists('.htpreconfig.php')) {
- include '.htpreconfig.php';
+ if (file_exists($this->basepath . DIRECTORY_SEPARATOR . '.htpreconfig.php')) {
+ include $this->basepath . DIRECTORY_SEPARATOR . '.htpreconfig.php';
}
$this->timezone = ((x($default_timezone)) ? $default_timezone : 'UTC');
$this->performance['start'] = microtime(true);
$this->performance['database'] = 0;
$this->performance['database_write'] = 0;
+ $this->performance['cache'] = 0;
+ $this->performance['cache_write'] = 0;
$this->performance['network'] = 0;
$this->performance['file'] = 0;
$this->performance['rendering'] = 0;
$this->performance['marktime'] = 0;
$this->performance['markstart'] = microtime(true);
- $this->callstack['database'] = array();
- $this->callstack['database_write'] = array();
- $this->callstack['network'] = array();
- $this->callstack['file'] = array();
- $this->callstack['rendering'] = array();
- $this->callstack['parser'] = array();
+ $this->callstack['database'] = [];
+ $this->callstack['database_write'] = [];
+ $this->callstack['cache'] = [];
+ $this->callstack['cache_write'] = [];
+ $this->callstack['network'] = [];
+ $this->callstack['file'] = [];
+ $this->callstack['rendering'] = [];
+ $this->callstack['parser'] = [];
- $this->config = array();
- $this->page = array();
- $this->pager = array();
+ $this->config = [];
+ $this->page = [];
+ $this->pager = [];
$this->query_string = '';
}
}
- if ($hostname != '') {
- $this->hostname = $hostname;
- }
-
- if (! static::directory_usable($basepath, false)) {
- throw new Exception('Basepath ' . $basepath . ' isn\'t usable.');
- }
-
- $this->basepath = rtrim($basepath, DIRECTORY_SEPARATOR);
-
set_include_path(
get_include_path() . PATH_SEPARATOR
. $this->basepath . DIRECTORY_SEPARATOR . 'include' . PATH_SEPARATOR
. $this->basepath . DIRECTORY_SEPARATOR . 'library' . PATH_SEPARATOR
- . $this->basepath . DIRECTORY_SEPARATOR . 'library/langdet' . PATH_SEPARATOR
. $this->basepath);
-
- if (is_array($_SERVER['argv']) && $_SERVER['argc'] > 1 && substr(end($_SERVER['argv']), 0, 4) == 'http') {
- $this->set_baseurl(array_pop($_SERVER['argv']));
- $_SERVER['argc'] --;
- }
-
if ((x($_SERVER, 'QUERY_STRING')) && substr($_SERVER['QUERY_STRING'], 0, 9) === 'pagename=') {
$this->query_string = substr($_SERVER['QUERY_STRING'], 9);
$this->module = str_replace('-', '_', $this->module);
} else {
$this->argc = 1;
- $this->argv = array('home');
+ $this->argv = ['home'];
$this->module = 'home';
}
$this->is_friendica_app = ($_SERVER['HTTP_USER_AGENT'] == 'Apache-HttpClient/UNAVAILABLE (java 1.4)');
// Register template engines
- $dc = get_declared_classes();
- foreach ($dc as $k) {
- if (in_array('ITemplateEngine', class_implements($k))) {
- $this->register_template_engine($k);
- }
- }
+ $this->register_template_engine('Friendica\Render\FriendicaSmartyEngine');
+
+ /**
+ * Load the configuration file which contains our DB credentials.
+ * Ignore errors. If the file doesn't exist or is empty, we are running in
+ * installation mode. *
+ */
+ $this->mode = ((file_exists('.htconfig.php') && filesize('.htconfig.php')) ? App::MODE_NORMAL : App::MODE_INSTALL);
+
self::$a = $this;
}
*
* @return string
*/
- public static function get_basepath() {
- if (isset($this)) {
- $basepath = $this->basepath;
- }
+ public function get_basepath()
+ {
+ $basepath = $this->basepath;
- if (! $basepath) {
+ if (!$basepath) {
$basepath = Config::get('system', 'basepath');
}
- if (! $basepath && x($_SERVER, 'DOCUMENT_ROOT')) {
+ if (!$basepath && x($_SERVER, 'DOCUMENT_ROOT')) {
$basepath = $_SERVER['DOCUMENT_ROOT'];
}
- if (! $basepath && x($_SERVER, 'PWD')) {
+ if (!$basepath && x($_SERVER, 'PWD')) {
$basepath = $_SERVER['PWD'];
}
* @param string $path The path that is about to be normalized
* @return string normalized path - when possible
*/
- public static function realpath($path) {
+ public static function realpath($path)
+ {
$normalized = realpath($path);
if (!is_bool($normalized)) {
}
}
- function get_scheme() {
+ public function get_scheme()
+ {
return $this->scheme;
}
* @param bool $ssl Whether to append http or https under SSL_POLICY_SELFSIGN
* @return string Friendica server base URL
*/
- function get_baseurl($ssl = false) {
+ public function get_baseurl($ssl = false)
+ {
$scheme = $this->scheme;
if (Config::get('system', 'ssl_policy') == SSL_POLICY_FULL) {
/**
* @brief Initializes the baseurl components
*
- * Clears the baseurl cache to prevent inconstistencies
+ * Clears the baseurl cache to prevent inconsistencies
*
* @param string $url
*/
- function set_baseurl($url) {
+ public function set_baseurl($url)
+ {
$parsed = @parse_url($url);
- if ($parsed) {
+ if (x($parsed)) {
$this->scheme = $parsed['scheme'];
$hostname = $parsed['host'];
$this->path = trim($parsed['path'], '\\/');
}
- if (file_exists('.htpreconfig.php')) {
- include '.htpreconfig.php';
+ if (file_exists($this->basepath . DIRECTORY_SEPARATOR . '.htpreconfig.php')) {
+ include $this->basepath . DIRECTORY_SEPARATOR . '.htpreconfig.php';
}
if (Config::get('config', 'hostname') != '') {
}
}
- function get_hostname() {
+ public function get_hostname()
+ {
if (Config::get('config', 'hostname') != '') {
$this->hostname = Config::get('config', 'hostname');
}
return $this->hostname;
}
- function set_hostname($h) {
- $this->hostname = $h;
- }
-
- function set_path($p) {
- $this->path = trim(trim($p), '/');
- }
-
- function get_path() {
+ public function get_path()
+ {
return $this->path;
}
- function set_pager_total($n) {
+ public function set_pager_total($n)
+ {
$this->pager['total'] = intval($n);
}
- function set_pager_itemspage($n) {
+ public function set_pager_itemspage($n)
+ {
$this->pager['itemspage'] = ((intval($n) > 0) ? intval($n) : 0);
$this->pager['start'] = ($this->pager['page'] * $this->pager['itemspage']) - $this->pager['itemspage'];
}
- function set_pager_page($n) {
+ public function set_pager_page($n)
+ {
$this->pager['page'] = $n;
$this->pager['start'] = ($this->pager['page'] * $this->pager['itemspage']) - $this->pager['itemspage'];
}
- function init_pagehead() {
+ public function init_pagehead()
+ {
$interval = ((local_user()) ? PConfig::get(local_user(), 'system', 'update_interval') : 40000);
// If the update is 'deactivated' set it to the highest integer number (~24 days)
$invinite_scroll = infinite_scroll_data($this->module);
$tpl = get_markup_template('head.tpl');
- $this->page['htmlhead'] = replace_macros($tpl, array(
- '$baseurl' => $this->get_baseurl(),
- '$local_user' => local_user(),
- '$generator' => 'Friendica' . ' ' . FRIENDICA_VERSION,
- '$delitem' => t('Delete this item?'),
- '$showmore' => t('show more'),
- '$showfewer' => t('show fewer'),
- '$update_interval' => $interval,
- '$shortcut_icon' => $shortcut_icon,
- '$touch_icon' => $touch_icon,
- '$stylesheet' => $stylesheet,
- '$infinite_scroll' => $invinite_scroll,
- )) . $this->page['htmlhead'];
- }
-
- function init_page_end() {
+ $this->page['htmlhead'] = replace_macros($tpl, [
+ '$baseurl' => $this->get_baseurl(),
+ '$local_user' => local_user(),
+ '$generator' => 'Friendica' . ' ' . FRIENDICA_VERSION,
+ '$delitem' => L10n::t('Delete this item?'),
+ '$showmore' => L10n::t('show more'),
+ '$showfewer' => L10n::t('show fewer'),
+ '$update_interval' => $interval,
+ '$shortcut_icon' => $shortcut_icon,
+ '$touch_icon' => $touch_icon,
+ '$stylesheet' => $stylesheet,
+ '$infinite_scroll' => $invinite_scroll,
+ ]) . $this->page['htmlhead'];
+ }
+
+ public function init_page_end()
+ {
if (!isset($this->page['end'])) {
$this->page['end'] = '';
}
$tpl = get_markup_template('end.tpl');
- $this->page['end'] = replace_macros($tpl, array(
- '$baseurl' => $this->get_baseurl()
- )) . $this->page['end'];
+ $this->page['end'] = replace_macros($tpl, [
+ '$baseurl' => $this->get_baseurl()
+ ]) . $this->page['end'];
}
- function set_curl_code($code) {
+ public function set_curl_code($code)
+ {
$this->curl_code = $code;
}
- function get_curl_code() {
+ public function get_curl_code()
+ {
return $this->curl_code;
}
- function set_curl_content_type($content_type) {
+ public function set_curl_content_type($content_type)
+ {
$this->curl_content_type = $content_type;
}
- function get_curl_content_type() {
+ public function get_curl_content_type()
+ {
return $this->curl_content_type;
}
- function set_curl_headers($headers) {
+ public function set_curl_headers($headers)
+ {
$this->curl_headers = $headers;
}
- function get_curl_headers() {
+ public function get_curl_headers()
+ {
return $this->curl_headers;
}
- function get_cached_avatar_image($avatar_image) {
- return $avatar_image;
- }
-
/**
- * @brief Removes the baseurl from an url. This avoids some mixed content problems.
+ * @brief Removes the base url from an url. This avoids some mixed content problems.
*
* @param string $orig_url
*
* @return string The cleaned url
*/
- function remove_baseurl($orig_url) {
-
+ public function remove_baseurl($orig_url)
+ {
// Remove the hostname from the url if it is an internal link
$nurl = normalise_link($orig_url);
$base = normalise_link($this->get_baseurl());
/**
* @brief Register template engine class
*
- * If $name is '', is used class static property $class::$name
- *
* @param string $class
- * @param string $name
*/
- function register_template_engine($class, $name = '') {
- /// @TODO Really === and not just == ?
- if ($name === '') {
- $v = get_class_vars($class);
- if (x($v, 'name'))
- $name = $v['name'];
- }
- if ($name === '') {
+ private function register_template_engine($class)
+ {
+ $v = get_class_vars($class);
+ if (x($v, 'name')) {
+ $name = $v['name'];
+ $this->template_engines[$name] = $class;
+ } else {
echo "template engine <tt>$class</tt> cannot be registered without a name.\n";
- killme();
+ die();
}
- $this->template_engines[$name] = $class;
}
/**
* If $name is not defined, return engine defined by theme,
* or default
*
- * @param strin $name Template engine name
* @return object Template Engine instance
*/
- function template_engine($name = '') {
- /// @TODO really type-check included?
- if ($name !== '') {
- $template_engine = $name;
- } else {
- $template_engine = 'smarty3';
- if (x($this->theme, 'template_engine')) {
- $template_engine = $this->theme['template_engine'];
- }
+ public function template_engine()
+ {
+ $template_engine = 'smarty3';
+ if (x($this->theme, 'template_engine')) {
+ $template_engine = $this->theme['template_engine'];
}
if (isset($this->template_engines[$template_engine])) {
*
* @return string
*/
- function get_template_engine() {
+ public function get_template_engine()
+ {
return $this->theme['template_engine'];
}
- function set_template_engine($engine = 'smarty3') {
+ public function set_template_engine($engine = 'smarty3')
+ {
$this->theme['template_engine'] = $engine;
}
- function get_template_ldelim($engine = 'smarty3') {
+ public function get_template_ldelim($engine = 'smarty3')
+ {
return $this->ldelim[$engine];
}
- function get_template_rdelim($engine = 'smarty3') {
+ public function get_template_rdelim($engine = 'smarty3')
+ {
return $this->rdelim[$engine];
}
- function save_timestamp($stamp, $value) {
+ public function save_timestamp($stamp, $value)
+ {
if (!isset($this->config['system']['profiler']) || !$this->config['system']['profiler']) {
return;
}
$this->callstack[$value][$callstack] += (float) $duration;
}
- /**
- * @brief Log active processes into the "process" table
- */
- function start_process() {
- $trace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 1);
-
- $command = basename($trace[0]['file']);
-
- $this->remove_inactive_processes();
-
- dba::transaction();
-
- $r = q('SELECT `pid` FROM `process` WHERE `pid` = %d', intval(getmypid()));
- if (!dbm::is_result($r)) {
- dba::insert('process', array('pid' => getmypid(), 'command' => $command, 'created' => datetime_convert()));
- }
- dba::commit();
- }
-
- /**
- * @brief Remove inactive processes
- */
- function remove_inactive_processes() {
- dba::transaction();
-
- $r = q('SELECT `pid` FROM `process`');
- if (dbm::is_result($r)) {
- foreach ($r AS $process) {
- if (!posix_kill($process['pid'], 0)) {
- q('DELETE FROM `process` WHERE `pid` = %d', intval($process['pid']));
- }
- }
- }
- dba::commit();
- }
-
- /**
- * @brief Remove the active process from the "process" table
- */
- function end_process() {
- q('DELETE FROM `process` WHERE `pid` = %d', intval(getmypid()));
- }
-
- function get_useragent() {
+ public function get_useragent()
+ {
return
FRIENDICA_PLATFORM . " '" .
FRIENDICA_CODENAME . "' " .
$this->get_baseurl();
}
- function is_friendica_app() {
+ public function is_friendica_app()
+ {
return $this->is_friendica_app;
}
*
* @return bool Is it a known backend?
*/
- function is_backend() {
- static $backends = array();
- $backends[] = '_well_known';
- $backends[] = 'api';
- $backends[] = 'dfrn_notify';
- $backends[] = 'fetch';
- $backends[] = 'hcard';
- $backends[] = 'hostxrd';
- $backends[] = 'nodeinfo';
- $backends[] = 'noscrape';
- $backends[] = 'p';
- $backends[] = 'poco';
- $backends[] = 'post';
- $backends[] = 'proxy';
- $backends[] = 'pubsub';
- $backends[] = 'pubsubhubbub';
- $backends[] = 'receive';
- $backends[] = 'rsd_xml';
- $backends[] = 'salmon';
- $backends[] = 'statistics_json';
- $backends[] = 'xrd';
+ public function is_backend()
+ {
+ static $backends = [
+ '_well_known',
+ 'api',
+ 'dfrn_notify',
+ 'fetch',
+ 'hcard',
+ 'hostxrd',
+ 'nodeinfo',
+ 'noscrape',
+ 'p',
+ 'poco',
+ 'post',
+ 'proxy',
+ 'pubsub',
+ 'pubsubhubbub',
+ 'receive',
+ 'rsd_xml',
+ 'salmon',
+ 'statistics_json',
+ 'xrd',
+ ];
// Check if current module is in backend or backend flag is set
return (in_array($this->module, $backends) || $this->backend);
*
* @return bool Is the limit reached?
*/
- function max_processes_reached() {
+ public function max_processes_reached()
+ {
// Deactivated, needs more investigating if this check really makes sense
return false;
+ /*
+ * Commented out to suppress static analyzer issues
+ *
if ($this->is_backend()) {
$process = 'backend';
$max_processes = Config::get('system', 'max_processes_backend');
}
}
- $processlist = dbm::processlist();
+ $processlist = DBM::processlist();
if ($processlist['list'] != '') {
logger('Processcheck: Processes: ' . $processlist['amount'] . ' - Processlist: ' . $processlist['list'], LOGGER_DEBUG);
}
}
return false;
+ */
}
/**
*
* @return bool Is the memory limit reached?
*/
- public function min_memory_reached() {
+ public function min_memory_reached()
+ {
$min_memory = Config::get('system', 'min_memory', 0);
if ($min_memory == 0) {
return false;
$memdata = explode("\n", file_get_contents('/proc/meminfo'));
- $meminfo = array();
+ $meminfo = [];
foreach ($memdata as $line) {
list($key, $val) = explode(':', $line);
$meminfo[$key] = (int) trim(str_replace('kB', '', $val));
$meminfo[$key] = (int) ($meminfo[$key] / 1024);
}
- if (!isset($meminfo['MemAvailable']) || ! isset($meminfo['MemFree'])) {
+ if (!isset($meminfo['MemAvailable']) || !isset($meminfo['MemFree'])) {
return false;
}
*
* @return bool Is the load reached?
*/
- function maxload_reached() {
-
+ public function maxload_reached()
+ {
if ($this->is_backend()) {
$process = 'backend';
$maxsysload = intval(Config::get('system', 'maxloadavg'));
return false;
}
- function proc_run($args) {
-
+ public function proc_run($args)
+ {
if (!function_exists('proc_open')) {
return;
}
array_unshift($args, ((x($this->config, 'php_path')) && (strlen($this->config['php_path'])) ? $this->config['php_path'] : 'php'));
- // add baseurl to args. cli scripts can't construct it
- $args[] = $this->get_baseurl();
-
for ($x = 0; $x < count($args); $x ++) {
$args[$x] = escapeshellarg($args[$x]);
}
- $cmdline = implode($args, ' ');
+ $cmdline = implode(' ', $args);
if ($this->min_memory_reached()) {
return;
}
if (Config::get('system', 'proc_windows')) {
- $resource = proc_open('cmd /c start /b ' . $cmdline, array(), $foo, $this->get_basepath());
+ $resource = proc_open('cmd /c start /b ' . $cmdline, [], $foo, $this->get_basepath());
} else {
- $resource = proc_open($cmdline . ' &', array(), $foo, $this->get_basepath());
+ $resource = proc_open($cmdline . ' &', [], $foo, $this->get_basepath());
}
if (!is_resource($resource)) {
logger('We got no resource for command ' . $cmdline, LOGGER_DEBUG);
*
* @return string system username
*/
- static function systemuser() {
- if (!function_exists('posix_getpwuid') || ! function_exists('posix_geteuid')) {
+ private static function systemuser()
+ {
+ if (!function_exists('posix_getpwuid') || !function_exists('posix_geteuid')) {
return '';
}
*
* @return boolean the directory is usable
*/
- static function directory_usable($directory, $check_writable = true) {
+ public static function directory_usable($directory, $check_writable = true)
+ {
if ($directory == '') {
logger('Directory is empty. This shouldn\'t happen.', LOGGER_DEBUG);
return false;
logger('Path "' . $directory . '" does not exist for user ' . self::systemuser(), LOGGER_DEBUG);
return false;
}
+
if (is_file($directory)) {
logger('Path "' . $directory . '" is a file for user ' . self::systemuser(), LOGGER_DEBUG);
return false;
}
+
if (!is_dir($directory)) {
logger('Path "' . $directory . '" is not a directory for user ' . self::systemuser(), LOGGER_DEBUG);
return false;
}
+
if ($check_writable && !is_writable($directory)) {
logger('Path "' . $directory . '" is not writable for user ' . self::systemuser(), LOGGER_DEBUG);
return false;
}
+
return true;
}
+
+ /**
+ * @param string $cat Config category
+ * @param string $k Config key
+ * @param mixed $default Default value if it isn't set
+ */
+ public function getConfigValue($cat, $k, $default = null)
+ {
+ $return = $default;
+
+ if ($cat === 'config') {
+ if (isset($this->config[$k])) {
+ $return = $this->config[$k];
+ }
+ } else {
+ if (isset($this->config[$cat][$k])) {
+ $return = $this->config[$cat][$k];
+ }
+ }
+
+ return $return;
+ }
+
+ /**
+ * Sets a value in the config cache. Accepts raw output from the config table
+ *
+ * @param string $cat Config category
+ * @param string $k Config key
+ * @param mixed $v Value to set
+ */
+ public function setConfigValue($cat, $k, $v)
+ {
+ // Only arrays are serialized in database, so we have to unserialize sparingly
+ $value = is_string($v) && preg_match("|^a:[0-9]+:{.*}$|s", $v) ? unserialize($v) : $v;
+
+ if ($cat === 'config') {
+ $this->config[$k] = $value;
+ } else {
+ $this->config[$cat][$k] = $value;
+ }
+ }
+
+ /**
+ * Deletes a value from the config cache
+ *
+ * @param string $cat Config category
+ * @param string $k Config key
+ */
+ public function deleteConfigValue($cat, $k)
+ {
+ if ($cat === 'config') {
+ if (isset($this->config[$k])) {
+ unset($this->config[$k]);
+ }
+ } else {
+ if (isset($this->config[$cat][$k])) {
+ unset($this->config[$cat][$k]);
+ }
+ }
+ }
+
+
+ /**
+ * Retrieves a value from the user config cache
+ *
+ * @param int $uid User Id
+ * @param string $cat Config category
+ * @param string $k Config key
+ * @param mixed $default Default value if key isn't set
+ */
+ public function getPConfigValue($uid, $cat, $k, $default = null)
+ {
+ $return = $default;
+
+ if (isset($this->config[$uid][$cat][$k])) {
+ $return = $this->config[$uid][$cat][$k];
+ }
+
+ return $return;
+ }
+
+ /**
+ * Sets a value in the user config cache
+ *
+ * Accepts raw output from the pconfig table
+ *
+ * @param int $uid User Id
+ * @param string $cat Config category
+ * @param string $k Config key
+ * @param mixed $v Value to set
+ */
+ public function setPConfigValue($uid, $cat, $k, $v)
+ {
+ // Only arrays are serialized in database, so we have to unserialize sparingly
+ $value = is_string($v) && preg_match("|^a:[0-9]+:{.*}$|s", $v) ? unserialize($v) : $v;
+
+ $this->config[$uid][$cat][$k] = $value;
+ }
+
+ /**
+ * Deletes a value from the user config cache
+ *
+ * @param int $uid User Id
+ * @param string $cat Config category
+ * @param string $k Config key
+ */
+ public function deletePConfigValue($uid, $cat, $k)
+ {
+ if (isset($this->config[$uid][$cat][$k])) {
+ unset($this->config[$uid][$cat][$k]);
+ }
+ }
+
+ /**
+ * Generates the site's default sender email address
+ *
+ * @return string
+ */
+ public function getSenderEmailAddress()
+ {
+ $sender_email = Config::get('config', 'sender_email');
+ if (empty($sender_email)) {
+ $hostname = $this->get_hostname();
+ if (strpos($hostname, ':')) {
+ $hostname = substr($hostname, 0, strpos($hostname, ':'));
+ }
+
+ $sender_email = 'noreply@' . $hostname;
+ }
+
+ return $sender_email;
+ }
+
+ /**
+ * @note Checks, if the App is in the Maintenance-Mode
+ *
+ * @return boolean
+ */
+ public function checkMaintenanceMode()
+ {
+ if (Config::get('system', 'maintenance')) {
+ $this->mode = App::MODE_MAINTENANCE;
+ return true;
+ }
+
+ return false;
+ }
}