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
namespace Friendica;
use Friendica\Core\Config;
use Friendica\Core\PConfig;
use Cache;
use dbm;
use Detection\MobileDetect;
use Exception;
/**
*
* 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 {
public $module_loaded = false;
public $query_string;
public $config;
public $page;
public $profile;
public $profile_uid;
public $user;
public $cid;
public $contact;
public $contacts;
public $page_contact;
public $content;
public $data = array();
public $error = false;
public $cmd;
public $argv;
public $argc;
public $module;
public $pager;
public $strings;
public $basepath;
public $path;
public $hooks;
public $timezone;
public $interactive = true;
public $plugins;
public $apps = array();
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 $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_thread_allow = true;
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 = array(
'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();
/**
* @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, 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);
// 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 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
$dc = get_declared_classes();
foreach ($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 <tt>$class</tt> 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 $obj;
}
}
echo "template engine <tt>$template_engine</tt> 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($process['pid']));
}
}
}
q('COMMIT');
}
/**
* @brief Remove the active process from the "process" table
*/
function end_process() {
q('DELETE FROM `process` WHERE `pid` = %d', intval(getmypid()));
}
/**
* @brief Returns a string with a callstack. Can be used for logging.
*
* @return string
*/
function callstack($depth = 4) {
$trace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, $depth + 2);
// We remove the first two items from the list since they contain data that we don't need.
array_shift($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) || $this->backend);
}
/**
* @brief Checks if the maximum number of database processes is reached
*
* @return bool Is the limit reached?
*/
function max_processes_reached() {
// Deactivated, needs more investigating if this check really makes sense
return false;
if ($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 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) AND ( 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'));
// 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, $check_writable = true) {
if ($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 AND !is_writable($directory)) {
logger('Path "' . $directory . '" is not writable for user ' . self::systemuser(), LOGGER_DEBUG);
return false;
}
return true;
}
}