X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;ds=sidebyside;f=src%2FApp.php;h=f08f6f66dca4a32955e82c0ab2ce718fc9d2fb7e;hb=493314a0677d852d2f8ce46888f4e9283494c1be;hp=674a99e053bc024dfad0a5e89261231157cff91c;hpb=5c77f45bdaa89e01d0f1ce90c89a5022ae6a4192;p=friendica.git
diff --git a/src/App.php b/src/App.php
index 674a99e053..f08f6f66dc 100644
--- a/src/App.php
+++ b/src/App.php
@@ -1,980 +1,1179 @@
- '',
- '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();
-
- /**
- * @brief An array of instanced template engines ('name'=>'instance')
- */
- public $template_engine_instance = array();
- public $process_id;
- private $ldelim = array(
- 'internal' => '',
- 'smarty3' => '{{'
- );
- private $rdelim = array(
- '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;
-
- /**
- * @brief App constructor.
- *
- * @param string $basepath Path to the app base folder
- */
- function __construct($basepath) {
-
- global $default_timezone;
-
- $hostname = '';
-
- if (file_exists('.htpreconfig.php')) {
- include '.htpreconfig.php';
- }
-
- $this->timezone = ((x($default_timezone)) ? $default_timezone : 'UTC');
-
- date_default_timezone_set($this->timezone);
-
- $this->performance['start'] = microtime(true);
- $this->performance['database'] = 0;
- $this->performance['database_write'] = 0;
- $this->performance['network'] = 0;
- $this->performance['file'] = 0;
- $this->performance['rendering'] = 0;
- $this->performance['parser'] = 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->config = array();
- $this->page = array();
- $this->pager = array();
-
- $this->query_string = '';
-
- $this->process_id = uniqid('log', true);
-
- startup();
-
- $this->scheme = 'http';
-
- if ((x($_SERVER, 'HTTPS') && $_SERVER['HTTPS']) ||
- (x($_SERVER, 'HTTP_FORWARDED') && preg_match('/proto=https/', $_SERVER['HTTP_FORWARDED'])) ||
- (x($_SERVER, 'HTTP_X_FORWARDED_PROTO') && $_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https') ||
- (x($_SERVER, 'HTTP_X_FORWARDED_SSL') && $_SERVER['HTTP_X_FORWARDED_SSL'] == 'on') ||
- (x($_SERVER, 'FRONT_END_HTTPS') && $_SERVER['FRONT_END_HTTPS'] == 'on') ||
- (x($_SERVER, 'SERVER_PORT') && (intval($_SERVER['SERVER_PORT']) == 443)) // XXX: reasonable assumption, but isn't this hardcoding too much?
- ) {
- $this->scheme = 'https';
- }
-
- if (x($_SERVER, 'SERVER_NAME')) {
- $this->hostname = $_SERVER['SERVER_NAME'];
-
- if (x($_SERVER, 'SERVER_PORT') && $_SERVER['SERVER_PORT'] != 80 && $_SERVER['SERVER_PORT'] != 443) {
- $this->hostname .= ':' . $_SERVER['SERVER_PORT'];
- }
- /*
- * Figure out if we are running at the top of a domain
- * or in a sub-directory and adjust accordingly
- */
-
- /// @TODO This kind of escaping breaks syntax-highlightning on CoolEdit (Midnight Commander)
- $path = trim(dirname($_SERVER['SCRIPT_NAME']), '/\\');
- if (isset($path) && strlen($path) && ($path != $this->path)) {
- $this->path = $path;
- }
- }
-
- if ($hostname != '') {
- $this->hostname = $hostname;
- }
-
- if (! static::directory_usable($basepath)) {
- 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);
-
- // removing trailing / - maybe a nginx problem
- $this->query_string = ltrim($this->query_string, '/');
- } elseif ((x($_SERVER, 'QUERY_STRING')) && substr($_SERVER['QUERY_STRING'], 0, 2) === 'q=') {
- $this->query_string = substr($_SERVER['QUERY_STRING'], 2);
-
- // removing trailing / - maybe a nginx problem
- $this->query_string = ltrim($this->query_string, '/');
- }
-
- if (x($_GET, 'pagename')) {
- $this->cmd = trim($_GET['pagename'], '/\\');
- } elseif (x($_GET, 'q')) {
- $this->cmd = trim($_GET['q'], '/\\');
- }
-
- // fix query_string
- $this->query_string = str_replace($this->cmd . '&', $this->cmd . '?', $this->query_string);
-
- // unix style "homedir"
- if (substr($this->cmd, 0, 1) === '~') {
- $this->cmd = 'profile/' . substr($this->cmd, 1);
- }
-
- // Diaspora style profile url
- if (substr($this->cmd, 0, 2) === 'u/') {
- $this->cmd = 'profile/' . substr($this->cmd, 2);
- }
-
- /*
- * Break the URL path into C style argc/argv style arguments for our
- * modules. Given "http://example.com/module/arg1/arg2", $this->argc
- * will be 3 (integer) and $this->argv will contain:
- * [0] => 'module'
- * [1] => 'arg1'
- * [2] => 'arg2'
- *
- *
- * There will always be one argument. If provided a naked domain
- * URL, $this->argv[0] is set to "home".
- */
-
- $this->argv = explode('/', $this->cmd);
- $this->argc = count($this->argv);
- if ((array_key_exists('0', $this->argv)) && strlen($this->argv[0])) {
- $this->module = str_replace('.', '_', $this->argv[0]);
- $this->module = str_replace('-', '_', $this->module);
- } else {
- $this->argc = 1;
- $this->argv = array('home');
- $this->module = 'home';
- }
-
- // See if there is any page number information, and initialise pagination
- $this->pager['page'] = ((x($_GET, 'page') && intval($_GET['page']) > 0) ? intval($_GET['page']) : 1);
- $this->pager['itemspage'] = 50;
- $this->pager['start'] = ($this->pager['page'] * $this->pager['itemspage']) - $this->pager['itemspage'];
-
- if ($this->pager['start'] < 0) {
- $this->pager['start'] = 0;
- }
- $this->pager['total'] = 0;
-
- // Detect mobile devices
- $mobile_detect = new \Mobile_Detect();
- $this->is_mobile = $mobile_detect->isMobile();
- $this->is_tablet = $mobile_detect->isTablet();
-
- // Friendica-Client
- $this->is_friendica_app = ($_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);
- }
- }
-
- self::$a = $this;
- }
-
- /**
- * @brief Returns the base filesystem path of the App
- *
- * It first checks for the internal variable, then for DOCUMENT_ROOT and
- * finally for PWD
- *
- * @return string
- */
- public static function get_basepath() {
- if (isset($this)) {
- $basepath = $this->basepath;
- }
-
- if (! $basepath) {
- $basepath = Config::get('system', 'basepath');
- }
-
- if (! $basepath && x($_SERVER, 'DOCUMENT_ROOT')) {
- $basepath = $_SERVER['DOCUMENT_ROOT'];
- }
-
- if (! $basepath && x($_SERVER, 'PWD')) {
- $basepath = $_SERVER['PWD'];
- }
-
- return $basepath;
- }
-
- function get_scheme() {
- return $this->scheme;
- }
-
- /**
- * @brief Retrieves the Friendica instance base URL
- *
- * This function assembles the base URL from multiple parts:
- * - Protocol is determined either by the request or a combination of
- * system.ssl_policy and the $ssl parameter.
- * - Host name is determined either by system.hostname or inferred from request
- * - Path is inferred from SCRIPT_NAME
- *
- * Note: $ssl parameter value doesn't directly correlate with the resulting protocol
- *
- * @param bool $ssl Whether to append http or https under SSL_POLICY_SELFSIGN
- * @return string Friendica server base URL
- */
- function get_baseurl($ssl = false) {
- // Is the function called statically?
- if (!(isset($this) && get_class($this) == __CLASS__)) {
- return self::$a->get_baseurl($ssl);
- }
-
- $scheme = $this->scheme;
-
- if (Config::get('system', 'ssl_policy') == SSL_POLICY_FULL) {
- $scheme = 'https';
- }
-
- // Basically, we have $ssl = true on any links which can only be seen by a logged in user
- // (and also the login link). Anything seen by an outsider will have it turned off.
-
- if (Config::get('system', 'ssl_policy') == SSL_POLICY_SELFSIGN) {
- if ($ssl) {
- $scheme = 'https';
- } else {
- $scheme = 'http';
- }
- }
-
- if (Config::get('config', 'hostname') != '') {
- $this->hostname = Config::get('config', 'hostname');
- }
-
- return $scheme . '://' . $this->hostname . ((isset($this->path) && strlen($this->path)) ? '/' . $this->path : '' );
- }
-
- /**
- * @brief Initializes the baseurl components
- *
- * Clears the baseurl cache to prevent inconstistencies
- *
- * @param string $url
- */
- function set_baseurl($url) {
- $parsed = @parse_url($url);
-
- if ($parsed) {
- $this->scheme = $parsed['scheme'];
-
- $hostname = $parsed['host'];
- if (x($parsed, 'port')) {
- $hostname .= ':' . $parsed['port'];
- }
- if (x($parsed, 'path')) {
- $this->path = trim($parsed['path'], '\\/');
- }
-
- if (file_exists('.htpreconfig.php')) {
- include '.htpreconfig.php';
- }
-
- if (Config::get('config', 'hostname') != '') {
- $this->hostname = Config::get('config', 'hostname');
- }
-
- if (!isset($this->hostname) OR ( $this->hostname == '')) {
- $this->hostname = $hostname;
- }
- }
- }
-
- 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() {
- return $this->path;
- }
-
- function set_pager_total($n) {
- $this->pager['total'] = intval($n);
- }
-
- 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) {
- $this->pager['page'] = $n;
- $this->pager['start'] = ($this->pager['page'] * $this->pager['itemspage']) - $this->pager['itemspage'];
- }
-
- function init_pagehead() {
- $interval = ((local_user()) ? PConfig::get(local_user(), 'system', 'update_interval') : 40000);
-
- // If the update is 'deactivated' set it to the highest integer number (~24 days)
- if ($interval < 0) {
- $interval = 2147483647;
- }
-
- if ($interval < 10000) {
- $interval = 40000;
- }
-
- // compose the page title from the sitename and the
- // current module called
- if (!$this->module == '') {
- $this->page['title'] = $this->config['sitename'] . ' (' . $this->module . ')';
- } else {
- $this->page['title'] = $this->config['sitename'];
- }
-
- /* put the head template at the beginning of page['htmlhead']
- * since the code added by the modules frequently depends on it
- * being first
- */
- if (!isset($this->page['htmlhead'])) {
- $this->page['htmlhead'] = '';
- }
-
- // If we're using Smarty, then doing replace_macros() will replace
- // any unrecognized variables with a blank string. Since we delay
- // replacing $stylesheet until later, we need to replace it now
- // with another variable name
- if ($this->theme['template_engine'] === 'smarty3') {
- $stylesheet = $this->get_template_ldelim('smarty3') . '$stylesheet' . $this->get_template_rdelim('smarty3');
- } else {
- $stylesheet = '$stylesheet';
- }
-
- $shortcut_icon = Config::get('system', 'shortcut_icon');
- if ($shortcut_icon == '') {
- $shortcut_icon = 'images/friendica-32.png';
- }
-
- $touch_icon = Config::get('system', 'touch_icon');
- if ($touch_icon == '') {
- $touch_icon = 'images/friendica-128.png';
- }
-
- // get data wich is needed for infinite scroll on the network page
- $invinite_scroll = infinite_scroll_data($this->module);
-
- $tpl = get_markup_template('head.tpl');
- $this->page['htmlhead'] = replace_macros($tpl, array(
- '$baseurl' => $this->get_baseurl(), // FIXME for z_path!!!!
- '$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,
- )) . $this->page['htmlhead'];
- }
-
- function init_page_end() {
- if (!isset($this->page['end'])) {
- $this->page['end'] = '';
- }
- $tpl = get_markup_template('end.tpl');
- $this->page['end'] = replace_macros($tpl, array(
- '$baseurl' => $this->get_baseurl() // FIXME for z_path!!!!
- )) . $this->page['end'];
- }
-
- function set_curl_code($code) {
- $this->curl_code = $code;
- }
-
- function get_curl_code() {
- return $this->curl_code;
- }
-
- function set_curl_content_type($content_type) {
- $this->curl_content_type = $content_type;
- }
-
- function get_curl_content_type() {
- return $this->curl_content_type;
- }
-
- function set_curl_headers($headers) {
- $this->curl_headers = $headers;
- }
-
- 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.
- *
- * @param string $orig_url
- *
- * @return string The cleaned url
- */
- function remove_baseurl($orig_url) {
-
- // Is the function called statically?
- if (!(isset($this) && get_class($this) == __CLASS__)) {
- return self::$a->remove_baseurl($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());
- $url = str_replace($base . '/', '', $nurl);
-
- // if it is an external link return the orignal value
- if ($url == normalise_link($orig_url)) {
- return $orig_url;
- } else {
- return $url;
- }
- }
-
- /**
- * @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 === '') {
- echo "template engine $class cannot be registered without a name.\n";
- killme();
- }
- $this->template_engines[$name] = $class;
- }
-
- /**
- * @brief Return template engine instance.
- *
- * 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 = $this->theme['template_engine'];
- }
- }
-
- if (isset($this->template_engines[$template_engine])) {
- if (isset($this->template_engine_instance[$template_engine])) {
- return $this->template_engine_instance[$template_engine];
- } else {
- $class = $this->template_engines[$template_engine];
- $obj = new $class;
- $this->template_engine_instance[$template_engine] = $obj;
- return $obj;
- }
- }
-
- echo "template engine $template_engine is not registered!\n";
- killme();
- }
-
- /**
- * @brief Returns the active template engine.
- *
- * @return string
- */
- function get_template_engine() {
- return $this->theme['template_engine'];
- }
-
- function set_template_engine($engine = 'smarty3') {
- $this->theme['template_engine'] = $engine;
- }
-
- function get_template_ldelim($engine = 'smarty3') {
- return $this->ldelim[$engine];
- }
-
- function get_template_rdelim($engine = 'smarty3') {
- return $this->rdelim[$engine];
- }
-
- function save_timestamp($stamp, $value) {
- if (!isset($this->config['system']['profiler']) || !$this->config['system']['profiler']) {
- return;
- }
-
- $duration = (float) (microtime(true) - $stamp);
-
- if (!isset($this->performance[$value])) {
- // Prevent ugly E_NOTICE
- $this->performance[$value] = 0;
- }
-
- $this->performance[$value] += (float) $duration;
- $this->performance['marktime'] += (float) $duration;
-
- $callstack = $this->callstack();
-
- if (!isset($this->callstack[$value][$callstack])) {
- // Prevent ugly E_NOTICE
- $this->callstack[$value][$callstack] = 0;
- }
-
- $this->callstack[$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();
-
- q('START TRANSACTION');
-
- $r = q('SELECT `pid` FROM `process` WHERE `pid` = %d', intval(getmypid()));
- if (!\dbm::is_result($r)) {
- q("INSERT INTO `process` (`pid`,`command`,`created`) VALUES (%d, '%s', '%s')", intval(getmypid()), dbesc($command), dbesc(datetime_convert()));
- }
- q('COMMIT');
- }
-
- /**
- * @brief Remove inactive processes
- */
- function remove_inactive_processes() {
- q('START 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']));
- }
- }
- }
- q('COMMIT');
- }
-
- /**
- * @brief Remove the active process from the "process" table
- */
- function end_process() {
- q('DELETE FROM `process` WHERE `pid` = %d', intval(getmypid()));
- }
-
- /**
- * @brief Returns a string with a callstack. Can be used for logging.
- *
- * @return string
- */
- function callstack() {
- $trace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 6);
-
- // We remove the first two items from the list since they contain data that we don't need.
- array_shift($trace);
- array_shift($trace);
-
- $callstack = array();
- foreach ($trace AS $func) {
- $callstack[] = $func['function'];
- }
-
- return implode(', ', $callstack);
- }
-
- function get_useragent() {
- return
- FRIENDICA_PLATFORM . " '" .
- FRIENDICA_CODENAME . "' " .
- FRIENDICA_VERSION . '-' .
- DB_UPDATE_VERSION . '; ' .
- $this->get_baseurl();
- }
-
- function is_friendica_app() {
- return $this->is_friendica_app;
- }
-
- /**
- * @brief Checks if the site is called via a backend process
- *
- * This isn't a perfect solution. But we need this check very early.
- * So we cannot wait until the modules are loaded.
- *
- * @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';
- $backends[] = 'xrd';
-
- // Check if current module is in backend or backend flag is set
- return (in_array($this->module, $backends) || $this->backend);
- }
-
- /**
- * @brief Checks if the maximum number of database processes is reached
- *
- * @return bool Is the limit reached?
- */
- function max_processes_reached() {
-
- if ($this->is_backend()) {
- $process = 'backend';
- $max_processes = Config::get('system', 'max_processes_backend');
- if (intval($max_processes) == 0) {
- $max_processes = 5;
- }
- } else {
- $process = 'frontend';
- $max_processes = Config::get('system', 'max_processes_frontend');
- if (intval($max_processes) == 0) {
- $max_processes = 20;
- }
- }
-
- $processlist = \dbm::processlist();
- if ($processlist['list'] != '') {
- logger('Processcheck: Processes: ' . $processlist['amount'] . ' - Processlist: ' . $processlist['list'], LOGGER_DEBUG);
-
- if ($processlist['amount'] > $max_processes) {
- logger('Processcheck: Maximum number of processes for ' . $process . ' tasks (' . $max_processes . ') reached.', LOGGER_DEBUG);
- return true;
- }
- }
- return false;
- }
-
- /**
- * @brief Checks if the minimal memory is reached
- *
- * @return bool Is the memory limit reached?
- */
- public function min_memory_reached() {
- $min_memory = Config::get('system', 'min_memory', 0);
- if ($min_memory == 0) {
- return false;
- }
-
- if (!is_readable('/proc/meminfo')) {
- return false;
- }
-
- $memdata = explode("\n", file_get_contents('/proc/meminfo'));
-
- $meminfo = array();
- foreach ($memdata as $line) {
- list($key, $val) = explode(':', $line);
- $meminfo[$key] = (int) trim(str_replace('kB', '', $val));
- $meminfo[$key] = (int) ($meminfo[$key] / 1024);
- }
-
- if (!isset($meminfo['MemAvailable']) OR ! isset($meminfo['MemFree'])) {
- return false;
- }
-
- $free = $meminfo['MemAvailable'] + $meminfo['MemFree'];
-
- $reached = ($free < $min_memory);
-
- if ($reached) {
- logger('Minimal memory reached: ' . $free . '/' . $meminfo['MemTotal'] . ' - limit ' . $min_memory, LOGGER_DEBUG);
- }
-
- return $reached;
- }
-
- /**
- * @brief Checks if the maximum load is reached
- *
- * @return bool Is the load reached?
- */
- function maxload_reached() {
-
- if ($this->is_backend()) {
- $process = 'backend';
- $maxsysload = intval(Config::get('system', 'maxloadavg'));
- if ($maxsysload < 1) {
- $maxsysload = 50;
- }
- } else {
- $process = 'frontend';
- $maxsysload = intval(Config::get('system', 'maxloadavg_frontend'));
- if ($maxsysload < 1) {
- $maxsysload = 50;
- }
- }
-
- $load = current_load();
- if ($load) {
- if (intval($load) > $maxsysload) {
- logger('system: load ' . $load . ' for ' . $process . ' tasks (' . $maxsysload . ') too high.');
- return true;
- }
- }
- return false;
- }
-
- function proc_run($args) {
-
- if (!function_exists('proc_open')) {
- return;
- }
-
- // If the last worker fork was less than 10 seconds before then don't fork another one.
- // This should prevent the forking of masses of workers.
- $cachekey = 'app:proc_run:started';
- $result = \Cache::get($cachekey);
-
- if (!is_null($result) AND ( time() - $result) < 10) {
- return;
- }
-
- // Set the timestamp of the last proc_run
- \Cache::set($cachekey, time(), CACHE_MINUTE);
-
- 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, ' ');
-
- 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());
- } else {
- $resource = proc_open($cmdline . ' &', array(), $foo, $this->get_basepath());
- }
- if (!is_resource($resource)) {
- logger('We got no resource for command ' . $cmdline, LOGGER_DEBUG);
- return;
- }
- proc_close($resource);
- }
-
- /**
- * @brief Returns the system user that is executing the script
- *
- * This mostly returns something like "www-data".
- *
- * @return string system username
- */
- static function systemuser() {
- if (!function_exists('posix_getpwuid') OR ! function_exists('posix_geteuid')) {
- return '';
- }
-
- $processUser = posix_getpwuid(posix_geteuid());
- return $processUser['name'];
- }
-
- /**
- * @brief Checks if a given directory is usable for the system
- *
- * @return boolean the directory is usable
- */
- static function directory_usable($directory) {
- if ($directory == '') {
- logger('Directory is empty. This shouldn\'t happen.', LOGGER_DEBUG);
- return false;
- }
-
- if (!file_exists($directory)) {
- 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 "' . $directory . '" is not a directory for user ' . self::systemuser(), LOGGER_DEBUG);
- return false;
- }
- if (!is_writable($directory)) {
- logger('Path "' . $directory . '" is not writable for user ' . self::systemuser(), LOGGER_DEBUG);
- return false;
- }
- return true;
- }
-}
+ '',
+ 'videowidth' => 425,
+ 'videoheight' => 350,
+ 'force_max_items' => 0,
+ 'stylesheet' => '',
+ 'template_engine' => 'smarty3',
+ ];
+
+ /**
+ * @brief An array of registered template engines ('name'=>'class name')
+ */
+ public $template_engines = [];
+
+ /**
+ * @brief An array of instanced template engines ('name'=>'instance')
+ */
+ public $template_engine_instance = [];
+ public $process_id;
+ public $queue;
+ private $ldelim = [
+ 'internal' => '',
+ 'smarty3' => '{{'
+ ];
+ private $rdelim = [
+ 'internal' => '',
+ 'smarty3' => '}}'
+ ];
+ private $scheme;
+ private $hostname;
+ private $curl_code;
+ private $curl_content_type;
+ private $curl_headers;
+ private static $a;
+
+ /**
+ * @brief App constructor.
+ *
+ * @param string $basepath Path to the app base folder
+ */
+ public function __construct($basepath)
+ {
+ global $default_timezone;
+
+ if (!static::directory_usable($basepath, false)) {
+ throw new Exception('Basepath ' . $basepath . ' isn\'t usable.');
+ }
+
+ $this->basepath = rtrim($basepath, DIRECTORY_SEPARATOR);
+
+ if (file_exists($this->basepath . DIRECTORY_SEPARATOR . '.htpreconfig.php')) {
+ include $this->basepath . DIRECTORY_SEPARATOR . '.htpreconfig.php';
+ }
+
+ $this->timezone = ((x($default_timezone)) ? $default_timezone : 'UTC');
+
+ date_default_timezone_set($this->timezone);
+
+ $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['parser'] = 0;
+ $this->performance['marktime'] = 0;
+ $this->performance['markstart'] = microtime(true);
+
+ $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 = [];
+ $this->page = [];
+ $this->pager = [];
+
+ $this->query_string = '';
+
+ $this->process_id = uniqid('log', true);
+
+ startup();
+
+ $this->scheme = 'http';
+
+ if ((x($_SERVER, 'HTTPS') && $_SERVER['HTTPS']) ||
+ (x($_SERVER, 'HTTP_FORWARDED') && preg_match('/proto=https/', $_SERVER['HTTP_FORWARDED'])) ||
+ (x($_SERVER, 'HTTP_X_FORWARDED_PROTO') && $_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https') ||
+ (x($_SERVER, 'HTTP_X_FORWARDED_SSL') && $_SERVER['HTTP_X_FORWARDED_SSL'] == 'on') ||
+ (x($_SERVER, 'FRONT_END_HTTPS') && $_SERVER['FRONT_END_HTTPS'] == 'on') ||
+ (x($_SERVER, 'SERVER_PORT') && (intval($_SERVER['SERVER_PORT']) == 443)) // XXX: reasonable assumption, but isn't this hardcoding too much?
+ ) {
+ $this->scheme = 'https';
+ }
+
+ if (x($_SERVER, 'SERVER_NAME')) {
+ $this->hostname = $_SERVER['SERVER_NAME'];
+
+ if (x($_SERVER, 'SERVER_PORT') && $_SERVER['SERVER_PORT'] != 80 && $_SERVER['SERVER_PORT'] != 443) {
+ $this->hostname .= ':' . $_SERVER['SERVER_PORT'];
+ }
+ /*
+ * Figure out if we are running at the top of a domain
+ * or in a sub-directory and adjust accordingly
+ */
+
+ /// @TODO This kind of escaping breaks syntax-highlightning on CoolEdit (Midnight Commander)
+ $path = trim(dirname($_SERVER['SCRIPT_NAME']), '/\\');
+ if (isset($path) && strlen($path) && ($path != $this->path)) {
+ $this->path = $path;
+ }
+ }
+
+ set_include_path(
+ get_include_path() . PATH_SEPARATOR
+ . $this->basepath . DIRECTORY_SEPARATOR . 'include' . PATH_SEPARATOR
+ . $this->basepath . DIRECTORY_SEPARATOR . 'library' . PATH_SEPARATOR
+ . $this->basepath);
+
+ if ((x($_SERVER, 'QUERY_STRING')) && substr($_SERVER['QUERY_STRING'], 0, 9) === 'pagename=') {
+ $this->query_string = substr($_SERVER['QUERY_STRING'], 9);
+
+ // removing trailing / - maybe a nginx problem
+ $this->query_string = ltrim($this->query_string, '/');
+ } elseif ((x($_SERVER, 'QUERY_STRING')) && substr($_SERVER['QUERY_STRING'], 0, 2) === 'q=') {
+ $this->query_string = substr($_SERVER['QUERY_STRING'], 2);
+
+ // removing trailing / - maybe a nginx problem
+ $this->query_string = ltrim($this->query_string, '/');
+ }
+
+ if (x($_GET, 'pagename')) {
+ $this->cmd = trim($_GET['pagename'], '/\\');
+ } elseif (x($_GET, 'q')) {
+ $this->cmd = trim($_GET['q'], '/\\');
+ }
+
+ // fix query_string
+ $this->query_string = str_replace($this->cmd . '&', $this->cmd . '?', $this->query_string);
+
+ // unix style "homedir"
+ if (substr($this->cmd, 0, 1) === '~') {
+ $this->cmd = 'profile/' . substr($this->cmd, 1);
+ }
+
+ // Diaspora style profile url
+ if (substr($this->cmd, 0, 2) === 'u/') {
+ $this->cmd = 'profile/' . substr($this->cmd, 2);
+ }
+
+ /*
+ * Break the URL path into C style argc/argv style arguments for our
+ * modules. Given "http://example.com/module/arg1/arg2", $this->argc
+ * will be 3 (integer) and $this->argv will contain:
+ * [0] => 'module'
+ * [1] => 'arg1'
+ * [2] => 'arg2'
+ *
+ *
+ * There will always be one argument. If provided a naked domain
+ * URL, $this->argv[0] is set to "home".
+ */
+
+ $this->argv = explode('/', $this->cmd);
+ $this->argc = count($this->argv);
+ if ((array_key_exists('0', $this->argv)) && strlen($this->argv[0])) {
+ $this->module = str_replace('.', '_', $this->argv[0]);
+ $this->module = str_replace('-', '_', $this->module);
+ } else {
+ $this->argc = 1;
+ $this->argv = ['home'];
+ $this->module = 'home';
+ }
+
+ // See if there is any page number information, and initialise pagination
+ $this->pager['page'] = ((x($_GET, 'page') && intval($_GET['page']) > 0) ? intval($_GET['page']) : 1);
+ $this->pager['itemspage'] = 50;
+ $this->pager['start'] = ($this->pager['page'] * $this->pager['itemspage']) - $this->pager['itemspage'];
+
+ if ($this->pager['start'] < 0) {
+ $this->pager['start'] = 0;
+ }
+ $this->pager['total'] = 0;
+
+ // Detect mobile devices
+ $mobile_detect = new MobileDetect();
+ $this->is_mobile = $mobile_detect->isMobile();
+ $this->is_tablet = $mobile_detect->isTablet();
+
+ // Friendica-Client
+ $this->is_friendica_app = ($_SERVER['HTTP_USER_AGENT'] == 'Apache-HttpClient/UNAVAILABLE (java 1.4)');
+
+ // Register template engines
+ $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;
+ }
+
+ /**
+ * @brief Returns the base filesystem path of the App
+ *
+ * It first checks for the internal variable, then for DOCUMENT_ROOT and
+ * finally for PWD
+ *
+ * @return string
+ */
+ public function get_basepath()
+ {
+ $basepath = $this->basepath;
+
+ if (!$basepath) {
+ $basepath = Config::get('system', 'basepath');
+ }
+
+ if (!$basepath && x($_SERVER, 'DOCUMENT_ROOT')) {
+ $basepath = $_SERVER['DOCUMENT_ROOT'];
+ }
+
+ if (!$basepath && x($_SERVER, 'PWD')) {
+ $basepath = $_SERVER['PWD'];
+ }
+
+ return self::realpath($basepath);
+ }
+
+ /**
+ * @brief Returns a normalized file path
+ *
+ * This is a wrapper for the "realpath" function.
+ * That function cannot detect the real path when some folders aren't readable.
+ * Since this could happen with some hosters we need to handle this.
+ *
+ * @param string $path The path that is about to be normalized
+ * @return string normalized path - when possible
+ */
+ public static function realpath($path)
+ {
+ $normalized = realpath($path);
+
+ if (!is_bool($normalized)) {
+ return $normalized;
+ } else {
+ return $path;
+ }
+ }
+
+ public function get_scheme()
+ {
+ return $this->scheme;
+ }
+
+ /**
+ * @brief Retrieves the Friendica instance base URL
+ *
+ * This function assembles the base URL from multiple parts:
+ * - Protocol is determined either by the request or a combination of
+ * system.ssl_policy and the $ssl parameter.
+ * - Host name is determined either by system.hostname or inferred from request
+ * - Path is inferred from SCRIPT_NAME
+ *
+ * Note: $ssl parameter value doesn't directly correlate with the resulting protocol
+ *
+ * @param bool $ssl Whether to append http or https under SSL_POLICY_SELFSIGN
+ * @return string Friendica server base URL
+ */
+ public function get_baseurl($ssl = false)
+ {
+ $scheme = $this->scheme;
+
+ if (Config::get('system', 'ssl_policy') == SSL_POLICY_FULL) {
+ $scheme = 'https';
+ }
+
+ // Basically, we have $ssl = true on any links which can only be seen by a logged in user
+ // (and also the login link). Anything seen by an outsider will have it turned off.
+
+ if (Config::get('system', 'ssl_policy') == SSL_POLICY_SELFSIGN) {
+ if ($ssl) {
+ $scheme = 'https';
+ } else {
+ $scheme = 'http';
+ }
+ }
+
+ if (Config::get('config', 'hostname') != '') {
+ $this->hostname = Config::get('config', 'hostname');
+ }
+
+ return $scheme . '://' . $this->hostname . ((isset($this->path) && strlen($this->path)) ? '/' . $this->path : '' );
+ }
+
+ /**
+ * @brief Initializes the baseurl components
+ *
+ * Clears the baseurl cache to prevent inconsistencies
+ *
+ * @param string $url
+ */
+ public function set_baseurl($url)
+ {
+ $parsed = @parse_url($url);
+
+ if (x($parsed)) {
+ $this->scheme = $parsed['scheme'];
+
+ $hostname = $parsed['host'];
+ if (x($parsed, 'port')) {
+ $hostname .= ':' . $parsed['port'];
+ }
+ if (x($parsed, 'path')) {
+ $this->path = trim($parsed['path'], '\\/');
+ }
+
+ if (file_exists($this->basepath . DIRECTORY_SEPARATOR . '.htpreconfig.php')) {
+ include $this->basepath . DIRECTORY_SEPARATOR . '.htpreconfig.php';
+ }
+
+ if (Config::get('config', 'hostname') != '') {
+ $this->hostname = Config::get('config', 'hostname');
+ }
+
+ if (!isset($this->hostname) || ( $this->hostname == '')) {
+ $this->hostname = $hostname;
+ }
+ }
+ }
+
+ public function get_hostname()
+ {
+ if (Config::get('config', 'hostname') != '') {
+ $this->hostname = Config::get('config', 'hostname');
+ }
+
+ return $this->hostname;
+ }
+
+ public function get_path()
+ {
+ return $this->path;
+ }
+
+ public function set_pager_total($n)
+ {
+ $this->pager['total'] = intval($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']) - $this->pager['itemspage'];
+ }
+
+ public function set_pager_page($n)
+ {
+ $this->pager['page'] = $n;
+ $this->pager['start'] = ($this->pager['page'] * $this->pager['itemspage']) - $this->pager['itemspage'];
+ }
+
+ public function init_pagehead()
+ {
+ $interval = ((local_user()) ? PConfig::get(local_user(), 'system', 'update_interval') : 40000);
+
+ // If the update is 'deactivated' set it to the highest integer number (~24 days)
+ if ($interval < 0) {
+ $interval = 2147483647;
+ }
+
+ if ($interval < 10000) {
+ $interval = 40000;
+ }
+
+ // compose the page title from the sitename and the
+ // current module called
+ if (!$this->module == '') {
+ $this->page['title'] = $this->config['sitename'] . ' (' . $this->module . ')';
+ } else {
+ $this->page['title'] = $this->config['sitename'];
+ }
+
+ /* put the head template at the beginning of page['htmlhead']
+ * since the code added by the modules frequently depends on it
+ * being first
+ */
+ if (!isset($this->page['htmlhead'])) {
+ $this->page['htmlhead'] = '';
+ }
+
+ // If we're using Smarty, then doing replace_macros() will replace
+ // any unrecognized variables with a blank string. Since we delay
+ // replacing $stylesheet until later, we need to replace it now
+ // with another variable name
+ if ($this->theme['template_engine'] === 'smarty3') {
+ $stylesheet = $this->get_template_ldelim('smarty3') . '$stylesheet' . $this->get_template_rdelim('smarty3');
+ } else {
+ $stylesheet = '$stylesheet';
+ }
+
+ $shortcut_icon = Config::get('system', 'shortcut_icon');
+ if ($shortcut_icon == '') {
+ $shortcut_icon = 'images/friendica-32.png';
+ }
+
+ $touch_icon = Config::get('system', 'touch_icon');
+ if ($touch_icon == '') {
+ $touch_icon = 'images/friendica-128.png';
+ }
+
+ // get data wich is needed for infinite scroll on the network page
+ $invinite_scroll = infinite_scroll_data($this->module);
+
+ $tpl = get_markup_template('head.tpl');
+ $this->page['htmlhead'] = replace_macros($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, [
+ '$baseurl' => $this->get_baseurl()
+ ]) . $this->page['end'];
+ }
+
+ public function set_curl_code($code)
+ {
+ $this->curl_code = $code;
+ }
+
+ public function get_curl_code()
+ {
+ return $this->curl_code;
+ }
+
+ public function set_curl_content_type($content_type)
+ {
+ $this->curl_content_type = $content_type;
+ }
+
+ public function get_curl_content_type()
+ {
+ return $this->curl_content_type;
+ }
+
+ public function set_curl_headers($headers)
+ {
+ $this->curl_headers = $headers;
+ }
+
+ public function get_curl_headers()
+ {
+ return $this->curl_headers;
+ }
+
+ /**
+ * @brief Removes the base url from an url. This avoids some mixed content problems.
+ *
+ * @param string $orig_url
+ *
+ * @return string The cleaned url
+ */
+ public function remove_baseurl($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());
+ $url = str_replace($base . '/', '', $nurl);
+
+ // if it is an external link return the orignal value
+ if ($url == normalise_link($orig_url)) {
+ return $orig_url;
+ } else {
+ return $url;
+ }
+ }
+
+ /**
+ * @brief Register template engine class
+ *
+ * @param string $class
+ */
+ private function register_template_engine($class)
+ {
+ $v = get_class_vars($class);
+ if (x($v, 'name')) {
+ $name = $v['name'];
+ $this->template_engines[$name] = $class;
+ } else {
+ echo "template engine $class cannot be registered without a name.\n";
+ die();
+ }
+ }
+
+ /**
+ * @brief Return template engine instance.
+ *
+ * If $name is not defined, return engine defined by theme,
+ * or default
+ *
+ * @return object Template Engine instance
+ */
+ public function template_engine()
+ {
+ $template_engine = 'smarty3';
+ if (x($this->theme, 'template_engine')) {
+ $template_engine = $this->theme['template_engine'];
+ }
+
+ if (isset($this->template_engines[$template_engine])) {
+ if (isset($this->template_engine_instance[$template_engine])) {
+ return $this->template_engine_instance[$template_engine];
+ } else {
+ $class = $this->template_engines[$template_engine];
+ $obj = new $class;
+ $this->template_engine_instance[$template_engine] = $obj;
+ return $obj;
+ }
+ }
+
+ echo "template engine $template_engine is not registered!\n";
+ killme();
+ }
+
+ /**
+ * @brief Returns the active template engine.
+ *
+ * @return string
+ */
+ public function get_template_engine()
+ {
+ return $this->theme['template_engine'];
+ }
+
+ public function set_template_engine($engine = 'smarty3')
+ {
+ $this->theme['template_engine'] = $engine;
+ }
+
+ public function get_template_ldelim($engine = 'smarty3')
+ {
+ return $this->ldelim[$engine];
+ }
+
+ public function get_template_rdelim($engine = 'smarty3')
+ {
+ return $this->rdelim[$engine];
+ }
+
+ public function save_timestamp($stamp, $value)
+ {
+ if (!isset($this->config['system']['profiler']) || !$this->config['system']['profiler']) {
+ return;
+ }
+
+ $duration = (float) (microtime(true) - $stamp);
+
+ if (!isset($this->performance[$value])) {
+ // Prevent ugly E_NOTICE
+ $this->performance[$value] = 0;
+ }
+
+ $this->performance[$value] += (float) $duration;
+ $this->performance['marktime'] += (float) $duration;
+
+ $callstack = System::callstack();
+
+ if (!isset($this->callstack[$value][$callstack])) {
+ // Prevent ugly E_NOTICE
+ $this->callstack[$value][$callstack] = 0;
+ }
+
+ $this->callstack[$value][$callstack] += (float) $duration;
+ }
+
+ public function get_useragent()
+ {
+ return
+ FRIENDICA_PLATFORM . " '" .
+ FRIENDICA_CODENAME . "' " .
+ FRIENDICA_VERSION . '-' .
+ DB_UPDATE_VERSION . '; ' .
+ $this->get_baseurl();
+ }
+
+ public function is_friendica_app()
+ {
+ return $this->is_friendica_app;
+ }
+
+ /**
+ * @brief Checks if the site is called via a backend process
+ *
+ * This isn't a perfect solution. But we need this check very early.
+ * So we cannot wait until the modules are loaded.
+ *
+ * @return bool Is it a known backend?
+ */
+ 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) || $this->backend);
+ }
+
+ /**
+ * @brief Checks if the maximum number of database processes is reached
+ *
+ * @return bool Is the limit reached?
+ */
+ public function max_processes_reached()
+ {
+ // Deactivated, needs more investigating if this check really makes sense
+ return false;
+
+ /*
+ * Commented out to suppress static analyzer issues
+ *
+ if ($this->is_backend()) {
+ $process = 'backend';
+ $max_processes = Config::get('system', 'max_processes_backend');
+ if (intval($max_processes) == 0) {
+ $max_processes = 5;
+ }
+ } else {
+ $process = 'frontend';
+ $max_processes = Config::get('system', 'max_processes_frontend');
+ if (intval($max_processes) == 0) {
+ $max_processes = 20;
+ }
+ }
+
+ $processlist = DBM::processlist();
+ if ($processlist['list'] != '') {
+ logger('Processcheck: Processes: ' . $processlist['amount'] . ' - Processlist: ' . $processlist['list'], LOGGER_DEBUG);
+
+ if ($processlist['amount'] > $max_processes) {
+ logger('Processcheck: Maximum number of processes for ' . $process . ' tasks (' . $max_processes . ') reached.', LOGGER_DEBUG);
+ return true;
+ }
+ }
+ return false;
+ */
+ }
+
+ /**
+ * @brief Checks if the minimal memory is reached
+ *
+ * @return bool Is the memory limit reached?
+ */
+ public function min_memory_reached()
+ {
+ $min_memory = Config::get('system', 'min_memory', 0);
+ if ($min_memory == 0) {
+ return false;
+ }
+
+ if (!is_readable('/proc/meminfo')) {
+ return false;
+ }
+
+ $memdata = explode("\n", file_get_contents('/proc/meminfo'));
+
+ $meminfo = [];
+ foreach ($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'])) {
+ return false;
+ }
+
+ $free = $meminfo['MemAvailable'] + $meminfo['MemFree'];
+
+ $reached = ($free < $min_memory);
+
+ if ($reached) {
+ logger('Minimal memory reached: ' . $free . '/' . $meminfo['MemTotal'] . ' - limit ' . $min_memory, LOGGER_DEBUG);
+ }
+
+ return $reached;
+ }
+
+ /**
+ * @brief Checks if the maximum load is reached
+ *
+ * @return bool Is the load reached?
+ */
+ public function maxload_reached()
+ {
+ if ($this->is_backend()) {
+ $process = 'backend';
+ $maxsysload = intval(Config::get('system', 'maxloadavg'));
+ if ($maxsysload < 1) {
+ $maxsysload = 50;
+ }
+ } else {
+ $process = 'frontend';
+ $maxsysload = intval(Config::get('system', 'maxloadavg_frontend'));
+ if ($maxsysload < 1) {
+ $maxsysload = 50;
+ }
+ }
+
+ $load = current_load();
+ if ($load) {
+ if (intval($load) > $maxsysload) {
+ logger('system: load ' . $load . ' for ' . $process . ' tasks (' . $maxsysload . ') too high.');
+ return true;
+ }
+ }
+ return false;
+ }
+
+ public function proc_run($args)
+ {
+ if (!function_exists('proc_open')) {
+ return;
+ }
+
+ // If the last worker fork was less than 2 seconds before then don't fork another one.
+ // This should prevent the forking of masses of workers.
+ $cachekey = 'app:proc_run:started';
+ $result = Cache::get($cachekey);
+
+ if (!is_null($result) && ( time() - $result) < 2) {
+ return;
+ }
+
+ // Set the timestamp of the last proc_run
+ Cache::set($cachekey, time(), CACHE_MINUTE);
+
+ array_unshift($args, ((x($this->config, 'php_path')) && (strlen($this->config['php_path'])) ? $this->config['php_path'] : 'php'));
+
+ for ($x = 0; $x < count($args); $x ++) {
+ $args[$x] = escapeshellarg($args[$x]);
+ }
+
+ $cmdline = implode(' ', $args);
+
+ if ($this->min_memory_reached()) {
+ return;
+ }
+
+ if (Config::get('system', 'proc_windows')) {
+ $resource = proc_open('cmd /c start /b ' . $cmdline, [], $foo, $this->get_basepath());
+ } else {
+ $resource = proc_open($cmdline . ' &', [], $foo, $this->get_basepath());
+ }
+ if (!is_resource($resource)) {
+ logger('We got no resource for command ' . $cmdline, LOGGER_DEBUG);
+ return;
+ }
+ proc_close($resource);
+ }
+
+ /**
+ * @brief Returns the system user that is executing the script
+ *
+ * This mostly returns something like "www-data".
+ *
+ * @return string system username
+ */
+ private static function systemuser()
+ {
+ if (!function_exists('posix_getpwuid') || !function_exists('posix_geteuid')) {
+ return '';
+ }
+
+ $processUser = posix_getpwuid(posix_geteuid());
+ return $processUser['name'];
+ }
+
+ /**
+ * @brief Checks if a given directory is usable for the system
+ *
+ * @return boolean the directory is usable
+ */
+ public static function directory_usable($directory, $check_writable = true)
+ {
+ if ($directory == '') {
+ logger('Directory is empty. This shouldn\'t happen.', LOGGER_DEBUG);
+ return false;
+ }
+
+ if (!file_exists($directory)) {
+ 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')) {
+ $this->mode = App::MODE_MAINTENANCE;
+ return true;
+ }
+
+ return false;
+ }
+
+ /**
+ * Returns the current theme name.
+ *
+ * @return string
+ */
+ public function getCurrentTheme()
+ {
+ if (!$this->current_theme) {
+ $this->computeCurrentTheme();
+ }
+
+ return $this->current_theme;
+ }
+
+ /**
+ * Computes the current theme name based on the node settings, the user settings and the device type
+ *
+ * @throws Exception
+ */
+ private function computeCurrentTheme()
+ {
+ $system_theme = Config::get('system', 'theme');
+ if (!$system_theme) {
+ throw new Exception(L10n::t('No system theme config value set.'));
+ }
+
+ // Sane default
+ $this->current_theme = $system_theme;
+
+ $allowed_themes = explode(',', Config::get('system', 'allowed_themes', $system_theme));
+
+ $page_theme = null;
+ // Find the theme that belongs to the user whose stuff we are looking at
+ if ($this->profile_uid && ($this->profile_uid != local_user())) {
+ // Allow folks to override user themes and always use their own on their own site.
+ // This works only if the user is on the same server
+ $user = dba::selectFirst('user', ['theme'], ['uid' => $this->profile_uid]);
+ if (DBM::is_result($user) && !PConfig::get(local_user(), 'system', 'always_my_theme')) {
+ $page_theme = $user['theme'];
+ }
+ }
+
+ $user_theme = defaults($_SESSION, 'theme', $system_theme);
+ // Specific mobile theme override
+ if (($this->is_mobile || $this->is_tablet) && defaults($_SESSION, 'show-mobile', true)) {
+ $system_mobile_theme = Config::get('system', 'mobile-theme');
+ $user_mobile_theme = defaults($_SESSION, 'mobile-theme', $system_mobile_theme);
+
+ // --- means same mobile theme as desktop
+ if (!empty($user_mobile_theme) && $user_mobile_theme !== '---') {
+ $user_theme = $user_mobile_theme;
+ }
+ }
+
+ if ($page_theme) {
+ $theme_name = $page_theme;
+ } else {
+ $theme_name = $user_theme;
+ }
+
+ if ($theme_name
+ && in_array($theme_name, $allowed_themes)
+ && (file_exists('view/theme/' . $theme_name . '/style.css')
+ || file_exists('view/theme/' . $theme_name . '/style.php'))
+ ) {
+ $this->current_theme = $theme_name;
+ }
+ }
+
+ /**
+ * @brief Return full URL to theme which is currently in effect.
+ *
+ * Provide a sane default if nothing is chosen or the specified theme does not exist.
+ *
+ * @return string
+ */
+ public function getCurrentThemeStylesheetPath()
+ {
+ return Core\Theme::getStylesheetPath($this->getCurrentTheme());
+ }
+}