Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
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<?php
/**
* @file src/App.php
*/
namespace Friendica;
use Friendica\Core\Config;
use Friendica\Core\L10n;
use Friendica\Core\PConfig;
use Friendica\Core\System;
use Friendica\Database\DBM;
use dba;
use Detection\MobileDetect;
use Exception;
require_once 'boot.php';
require_once 'include/dba.php';
require_once 'include/text.php';
/**
*
* class: App
*
* @brief Our main application structure for the life of this page.
*
* Primarily deals with the URL that got us here
* and tries to make some sense of it, and
* stores our page contents and config storage
* and anything else that might need to be passed around
* before we spit the page out.
*
*/
class App
{
const MODE_LOCALCONFIGPRESENT = 1;
const MODE_DBAVAILABLE = 2;
const MODE_DBCONFIGAVAILABLE = 4;
const MODE_MAINTENANCEDISABLED = 8;
/**
* @deprecated since version 2008.08 Use App->isInstallMode() instead to check for install mode.
*/
const MODE_INSTALL = 0;
/**
* @deprecated since version 2008.08 Use the precise mode constant to check for a specific capability instead.
*/
const MODE_NORMAL = App::MODE_LOCALCONFIGPRESENT | App::MODE_DBAVAILABLE | App::MODE_DBCONFIGAVAILABLE | App::MODE_MAINTENANCEDISABLED;
public $module_loaded = false;
public $module_class = null;
public $query_string = '';
public $config = [];
public $page = [];
public $pager = [];
public $page_offset;
public $profile;
public $profile_uid;
public $user;
public $cid;
public $contact;
public $contacts;
public $page_contact;
public $content;
public $data = [];
public $error = false;
public $cmd = '';
public $argv;
public $argc;
public $module;
public $mode = App::MODE_INSTALL;
public $strings;
public $basepath;
public $urlpath;
public $hooks = [];
public $timezone;
public $interactive = true;
public $addons;
public $addons_admin = [];
public $apps = [];
public $identities;
public $is_mobile = false;
public $is_tablet = false;
public $is_friendica_app;
public $performance = [];
public $callstack = [];
public $theme_info = [];
public $backend = true;
public $nav_sel;
public $category;
// Allow themes to control internal parameters
// by changing App values in theme.php
public $sourcename = '';
public $videowidth = 425;
public $videoheight = 350;
public $force_max_items = 0;
public $theme_events_in_profile = true;
/**
* @brief An array for all theme-controllable parameters
*
* Mostly unimplemented yet. Only options 'template_engine' and
* beyond are used.
*/
public $theme = [
'sourcename' => '',
'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;
/**
* @brief App constructor.
*
* @param string $basepath Path to the app base folder
*/
public function __construct($basepath)
{
if (!static::directory_usable($basepath, false)) {
throw new Exception('Basepath ' . $basepath . ' isn\'t usable.');
}
BaseObject::setApp($this);
$this->basepath = rtrim($basepath, DIRECTORY_SEPARATOR);
// The order of the following calls is important to ensure proper initialization
$this->loadConfigFiles();
$this->loadDatabase();
$this->determineMode();
$this->determineUrlPath();
Config::load();
if ($this->mode & self::MODE_DBAVAILABLE) {
Core\Addon::loadHooks();
$this->loadAddonConfig();
}
$this->loadDefaultTimezone();
$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->page = [
'aside' => '',
'bottom' => '',
'content' => '',
'end' => '',
'footer' => '',
'htmlhead' => '',
'nav' => '',
'page_title' => '',
'right_aside' => '',
'template' => '',
'title' => ''
];
$this->process_id = System::processID('log');
set_time_limit(0);
// This has to be quite large to deal with embedded private photos
ini_set('pcre.backtrack_limit', 500000);
$this->scheme = 'http';
if ((x($_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'];
}
}
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);
} 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 (!empty($_GET['pagename'])) {
$this->cmd = trim($_GET['pagename'], '/\\');
} elseif (!empty($_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
$this->is_friendica_app = isset($_SERVER['HTTP_USER_AGENT']) && $_SERVER['HTTP_USER_AGENT'] == 'Apache-HttpClient/UNAVAILABLE (java 1.4)';
// Register template engines
$this->register_template_engine('Friendica\Render\FriendicaSmartyEngine');
}
/**
* Load the configuration files
*
* First loads the default value for all the configuration keys, then the legacy configuration files, then the
* expected local.ini.php
*/
private function loadConfigFiles()
{
$this->loadConfigFile($this->basepath . DIRECTORY_SEPARATOR . 'config' . DIRECTORY_SEPARATOR . 'defaults.ini.php');
// Legacy .htconfig.php support
if (file_exists($this->basepath . DIRECTORY_SEPARATOR . '.htpreconfig.php')) {
$a = $this;
include $this->basepath . DIRECTORY_SEPARATOR . '.htpreconfig.php';
}
// Legacy .htconfig.php support
if (file_exists($this->basepath . DIRECTORY_SEPARATOR . '.htconfig.php')) {
$a = $this;
include $this->basepath . DIRECTORY_SEPARATOR . '.htconfig.php';
unset($db_host, $db_user, $db_pass, $db_data);
if (isset($default_timezone)) {
$this->setConfigValue('system', 'default_timezone', $default_timezone);
unset($default_timezone);
}
if (isset($pidfile)) {
$this->setConfigValue('system', 'pidfile', $pidfile);
unset($pidfile);
}
}
if (file_exists($this->basepath . DIRECTORY_SEPARATOR . 'config' . DIRECTORY_SEPARATOR . 'local.ini.php')) {
$this->loadConfigFile($this->basepath . DIRECTORY_SEPARATOR . 'config' . DIRECTORY_SEPARATOR . 'local.ini.php');
}
}
/**
* Tries to load the specified configuration file into the App->config array.
* Overwrites previously set values.
*
* The config format is INI and the template for configuration files is the following:
*
* <?php return <<<INI
*
* [section]
* key = value
*
* INI;
* // Keep this line
*
* @param type $filepath
* @throws Exception
*/
public function loadConfigFile($filepath)
{
if (!file_exists($filepath)) {
throw new Exception('Error parsing non-existent config file ' . $filepath);
}
$contents = include($filepath);
$config = parse_ini_string($contents, true, INI_SCANNER_TYPED);
if ($config === false) {
throw new Exception('Error parsing config file ' . $filepath);
}
foreach ($config as $category => $values) {
foreach ($values as $key => $value) {
$this->setConfigValue($category, $key, $value);
}
}
}
/**
* Loads addons configuration files
*
* First loads all activated addons default configuration throught the load_config hook, then load the local.ini.php
* again to overwrite potential local addon configuration.
*/
private function loadAddonConfig()
{
// Loads addons default config
Core\Addon::callHooks('load_config');
// Load the local addon config file to overwritten default addon config values
if (file_exists($this->basepath . DIRECTORY_SEPARATOR . 'config' . DIRECTORY_SEPARATOR . 'addon.ini.php')) {
$this->loadConfigFile($this->basepath . DIRECTORY_SEPARATOR . 'config' . DIRECTORY_SEPARATOR . 'addon.ini.php');
}
}
/**
* Loads the default timezone
*
* Include support for legacy $default_timezone
*
* @global string $default_timezone
*/
private function loadDefaultTimezone()
{
if ($this->getConfigValue('system', 'default_timezone')) {
$this->timezone = $this->getConfigValue('system', 'default_timezone');
} else {
global $default_timezone;
$this->timezone = !empty($default_timezone) ? $default_timezone : 'UTC';
}
if ($this->timezone) {
date_default_timezone_set($this->timezone);
}
}
/**
* Figure out if we are running at the top of a domain or in a sub-directory and adjust accordingly
*/
private function determineUrlPath()
{
$this->urlpath = $this->getConfigValue('system', 'urlpath');
/* SCRIPT_URL gives /path/to/friendica/module/parameter
* QUERY_STRING gives pagename=module/parameter
*
* To get /path/to/friendica we perform dirname() for as many levels as there are slashes in the QUERY_STRING
*/
if (!empty($_SERVER['SCRIPT_URL'])) {
// Module
if (!empty($_SERVER['QUERY_STRING'])) {
$path = trim(dirname($_SERVER['SCRIPT_URL'], substr_count(trim($_SERVER['QUERY_STRING'], '/'), '/') + 1), '/');
} else {
// Root page
$path = trim($_SERVER['SCRIPT_URL'], '/');
}
if ($path && $path != $this->urlpath) {
$this->urlpath = $path;
}
}
}
/**
* Sets the App mode
*
* - App::MODE_INSTALL : Either the database connection can't be established or the config table doesn't exist
* - App::MODE_MAINTENANCE: The maintenance mode has been set
* - App::MODE_NORMAL : Normal run with all features enabled
*
* @return type
*/
private function determineMode()
{
$this->mode = 0;
if (!file_exists($this->basepath . DIRECTORY_SEPARATOR . 'config' . DIRECTORY_SEPARATOR . 'local.ini.php')
&& !file_exists($this->basepath . DIRECTORY_SEPARATOR . '.htconfig.php')) {
return;
}
$this->mode |= App::MODE_LOCALCONFIGPRESENT;
if (!\dba::connected()) {
return;
}
$this->mode |= App::MODE_DBAVAILABLE;
if (\dba::fetch_first("SHOW TABLES LIKE 'config'") === false) {
return;
}
$this->mode |= App::MODE_DBCONFIGAVAILABLE;
if (Config::get('system', 'maintenance')) {
return;
}
$this->mode |= App::MODE_MAINTENANCEDISABLED;
}
public function loadDatabase()
{
if (\dba::connected()) {
return;
}
$db_host = $this->getConfigValue('database', 'hostname');
$db_user = $this->getConfigValue('database', 'username');
$db_pass = $this->getConfigValue('database', 'password');
$db_data = $this->getConfigValue('database', 'database');
$charset = $this->getConfigValue('database', 'charset');
// Use environment variables for mysql if they are set beforehand
if (!empty(getenv('MYSQL_HOST'))
&& (!empty(getenv('MYSQL_USERNAME')) || !empty(getenv('MYSQL_USER')))
&& getenv('MYSQL_PASSWORD') !== false
&& !empty(getenv('MYSQL_DATABASE')))
{
$db_host = getenv('MYSQL_HOST');
if (!empty(getenv('MYSQL_PORT'))) {
$db_host .= ':' . getenv('MYSQL_PORT');
}
if (!empty(getenv('MYSQL_USERNAME'))) {
$db_user = getenv('MYSQL_USERNAME');
} else {
$db_user = getenv('MYSQL_USER');
}
$db_pass = (string) getenv('MYSQL_PASSWORD');
$db_data = getenv('MYSQL_DATABASE');
} elseif (file_exists($this->basepath . DIRECTORY_SEPARATOR . '.htconfig.php')) {
$a = new \stdClass();
include $this->basepath . DIRECTORY_SEPARATOR . '.htconfig.php';
$charset = isset($a->config["system"]["db_charset"]) ? $a->config["system"]["db_charset"] : $charset;
unset($a);
}
$stamp1 = microtime(true);
\dba::connect($db_host, $db_user, $db_pass, $db_data, $charset);
unset($db_host, $db_user, $db_pass, $db_data, $charset);
$this->save_timestamp($stamp1, "network");
}
/**
* Install mode is when the local config file is missing or the DB schema hasn't been installed yet.
*
* @return bool
*/
public function isInstallMode()
{
return !($this->mode & App::MODE_LOCALCONFIGPRESENT) || !($this->mode & App::MODE_DBCONFIGAVAILABLE);
}
/**
* @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 . '://' . $this->hostname . (!empty($this->urlpath) ? '/' . $this->urlpath : '' );
}
/**
* @brief Initializes the baseurl components
*
* Clears the baseurl cache to prevent inconsistencies
*
* @param string $url
*/
public function set_baseurl($url)
{
$parsed = @parse_url($url);
$hostname = '';
if (x($parsed)) {
if (!empty($parsed['scheme'])) {
$this->scheme = $parsed['scheme'];
}
if (!empty($parsed['host'])) {
$hostname = $parsed['host'];
}
if (x($parsed, 'port')) {
$hostname .= ':' . $parsed['port'];
}
if (x($parsed, 'path')) {
$this->urlpath = trim($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 $this->urlpath;
}
public function set_pager_total($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' => $invinite_scroll,
'$block_public' => intval(Config::get('system', 'block_public')),
]) . $this->page['htmlhead'];
}
public function init_page_end()
{
if (!isset($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] = $class;
} else {
echo "template engine <tt>$class</tt> 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 $obj;
}
}
echo "template engine <tt>$template_engine</tt> 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) || $this->backend);
}
/**
* @brief Checks if the maximum number of database processes is reached
*
* @return bool Is the limit reached?
*/
public function isMaxProcessesReached()
{
// Deactivated, needs more investigating if this check really makes sense
return false;
/*
* Commented out to suppress static analyzer issues
*
if ($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 $reached;
}
/**
* @brief Checks if the maximum load is reached
*
* @return bool Is the load reached?
*/
public function isMaxLoadReached()
{
if ($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;
}
array_unshift($args, $this->getConfigValue('config', 'php_path', 'php'));
for ($x = 0; $x < count($args); $x ++) {
$args[$x] = escapeshellarg($args[$x]);
}
$cmdline = implode(' ', $args);
if ($this->min_memory_reached()) {
return;
}
if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
$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] = $value;
} else {
if (!isset($this->config[$cat])) {
$this->config[$cat] = [];
}
$this->config[$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) : $v;
if (!isset($this->config[$uid])) {
$this->config[$uid] = [];
}
if (!isset($this->config[$uid][$cat])) {
$this->config[$uid][$cat] = [];
}
$this->config[$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 $sender_email;
}
/**
* Returns the current theme name.
*
* @return string
*/
public function getCurrentTheme()
{
if ($this->isInstallMode()) {
return '';
}
//// @TODO Compute the current theme only once (this behavior has
/// already been implemented, but it didn't work well -
/// https://github.com/friendica/friendica/issues/5092)
$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 = $user['theme'];
}
}
if (!empty($_SESSION)) {
$user_theme = defaults($_SESSION, 'theme', $system_theme);
} else {
$user_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());
}
}