friendica/boot.php

<?php
/** @file boot.php
 *
 * This file defines some global constants and includes the central App class.
 */

/**
 * Friendica
 *
 * Friendica is a communications platform for integrated social communications
 * utilising decentralised communications and linkage to several indie social
 * projects - as well as popular mainstream providers.
 *
 * Our mission is to free our friends and families from the clutches of
 * data-harvesting corporations, and pave the way to a future where social
 * communications are free and open and flow between alternate providers as
 * easily as email does today.
 */

require_once('include/autoloader.php');

use \Friendica\Core\Config;

require_once('include/config.php');
require_once('include/network.php');
require_once('include/plugin.php');
require_once('include/text.php');
require_once('include/datetime.php');
require_once('include/pgettext.php');
require_once('include/nav.php');
require_once('include/cache.php');
require_once('library/Mobile_Detect/Mobile_Detect.php');
require_once('include/features.php');
require_once('include/identity.php');
require_once('include/pidfile.php');
require_once('update.php');
require_once('include/dbstructure.php');

define ( 'FRIENDICA_PLATFORM',     'Friendica');
define ( 'FRIENDICA_CODENAME',     'Asparagus');
define ( 'FRIENDICA_VERSION',      '3.5.1-dev' );
define ( 'DFRN_PROTOCOL_VERSION',  '2.23'    );
define ( 'DB_UPDATE_VERSION',      1214      );

/**
 * @brief Constant with a HTML line break.
 *
 * Contains a HTML line break (br) element and a real carriage return with line
 * feed for the source.
 * This can be used in HTML and JavaScript where needed a line break.
 */
define ( 'EOL',                    "<br />\r\n"     );
define ( 'ATOM_TIME',              'Y-m-d\TH:i:s\Z' );


/**
 * @brief Image storage quality.
 *
 * Lower numbers save space at cost of image detail.
 * For ease of upgrade, please do not change here. Change jpeg quality with
 * $a->config['system']['jpeg_quality'] = n;
 * in .htconfig.php, where n is netween 1 and 100, and with very poor results
 * below about 50
 *
 */

define ( 'JPEG_QUALITY',            100  );
/**
 * $a->config['system']['png_quality'] from 0 (uncompressed) to 9
 */
define ( 'PNG_QUALITY',             8  );

/**
 *
 * An alternate way of limiting picture upload sizes. Specify the maximum pixel
 * length that pictures are allowed to be (for non-square pictures, it will apply
 * to the longest side). Pictures longer than this length will be resized to be
 * this length (on the longest side, the other side will be scaled appropriately).
 * Modify this value using
 *
 *    $a->config['system']['max_image_length'] = n;
 *
 * in .htconfig.php
 *
 * If you don't want to set a maximum length, set to -1. The default value is
 * defined by 'MAX_IMAGE_LENGTH' below.
 *
 */
define ( 'MAX_IMAGE_LENGTH',        -1  );


/**
 * Not yet used
 */

define ( 'DEFAULT_DB_ENGINE',  'MyISAM'  );

/**
 * @name SSL Policy
 *
 * SSL redirection policies
 * @{
 */
define ( 'SSL_POLICY_NONE',         0 );
define ( 'SSL_POLICY_FULL',         1 );
define ( 'SSL_POLICY_SELFSIGN',     2 );
/* @}*/

/**
 * @name Logger
 *
 * log levels
 * @{
 */
define ( 'LOGGER_NORMAL',          0 );
define ( 'LOGGER_TRACE',           1 );
define ( 'LOGGER_DEBUG',           2 );
define ( 'LOGGER_DATA',            3 );
define ( 'LOGGER_ALL',             4 );
/* @}*/

/**
 * @name Cache
 *
 * Cache levels
 * @{
 */
define ( 'CACHE_MONTH',            0 );
define ( 'CACHE_WEEK',             1 );
define ( 'CACHE_DAY',              2 );
define ( 'CACHE_HOUR',             3 );
define ( 'CACHE_HALF_HOUR',        4 );
define ( 'CACHE_QUARTER_HOUR',     5 );
define ( 'CACHE_FIVE_MINUTES',     6 );
define ( 'CACHE_MINUTE',           7 );
/* @}*/

/**
 * @name Register
 *
 * Registration policies
 * @{
 */
define ( 'REGISTER_CLOSED',        0 );
define ( 'REGISTER_APPROVE',       1 );
define ( 'REGISTER_OPEN',          2 );
/** @}*/

/**
 * @name Contact_is
 *
 * Relationship types
 * @{
 */
define ( 'CONTACT_IS_FOLLOWER', 1);
define ( 'CONTACT_IS_SHARING',  2);
define ( 'CONTACT_IS_FRIEND',   3);
/** @}*/

/**
 * @name Update
 *
 * DB update return values
 * @{
 */
define ( 'UPDATE_SUCCESS', 0);
define ( 'UPDATE_FAILED',  1);
/** @}*/


/**
 * @name page/profile types
 *
 * PAGE_NORMAL is a typical personal profile account
 * PAGE_SOAPBOX automatically approves all friend requests as CONTACT_IS_SHARING, (readonly)
 * PAGE_COMMUNITY automatically approves all friend requests as CONTACT_IS_SHARING, but with
 *      write access to wall and comments (no email and not included in page owner's ACL lists)
 * PAGE_FREELOVE automatically approves all friend requests as full friends (CONTACT_IS_FRIEND).
 *
 * @{
 */
define ( 'PAGE_NORMAL',            0 );
define ( 'PAGE_SOAPBOX',           1 );
define ( 'PAGE_COMMUNITY',         2 );
define ( 'PAGE_FREELOVE',          3 );
define ( 'PAGE_BLOG',              4 );
define ( 'PAGE_PRVGROUP',          5 );
/** @}*/

/**
 * @name account types
 *
 * ACCOUNT_TYPE_PERSON - the account belongs to a person
 *	Associated page types: PAGE_NORMAL, PAGE_SOAPBOX, PAGE_FREELOVE
 *
 * ACCOUNT_TYPE_ORGANISATION - the account belongs to an organisation
 *	Associated page type: PAGE_SOAPBOX
 *
 * ACCOUNT_TYPE_NEWS - the account is a news reflector
 *	Associated page type: PAGE_SOAPBOX
 *
 * ACCOUNT_TYPE_COMMUNITY - the account is community forum
 *	Associated page types: PAGE_COMMUNITY, PAGE_PRVGROUP
 * @{
 */
define ( 'ACCOUNT_TYPE_PERSON',      0 );
define ( 'ACCOUNT_TYPE_ORGANISATION',1 );
define ( 'ACCOUNT_TYPE_NEWS',        2 );
define ( 'ACCOUNT_TYPE_COMMUNITY',   3 );
/** @}*/

/**
 * @name CP
 *
 * Type of the community page
 * @{
 */
define ( 'CP_NO_COMMUNITY_PAGE',   -1 );
define ( 'CP_USERS_ON_SERVER',     0 );
define ( 'CP_GLOBAL_COMMUNITY',    1 );
/** @}*/

/**
 * @name Network
 *
 * Network and protocol family types
 * @{
 */
define ( 'NETWORK_DFRN',             'dfrn');    // Friendica, Mistpark, other DFRN implementations
define ( 'NETWORK_ZOT',              'zot!');    // Zot!
define ( 'NETWORK_OSTATUS',          'stat');    // status.net, identi.ca, GNU-social, other OStatus implementations
define ( 'NETWORK_FEED',             'feed');    // RSS/Atom feeds with no known "post/notify" protocol
define ( 'NETWORK_DIASPORA',         'dspr');    // Diaspora
define ( 'NETWORK_MAIL',             'mail');    // IMAP/POP
define ( 'NETWORK_MAIL2',            'mai2');    // extended IMAP/POP
define ( 'NETWORK_FACEBOOK',         'face');    // Facebook API
define ( 'NETWORK_LINKEDIN',         'lnkd');    // LinkedIn
define ( 'NETWORK_XMPP',             'xmpp');    // XMPP
define ( 'NETWORK_MYSPACE',          'mysp');    // MySpace
define ( 'NETWORK_GPLUS',            'goog');    // Google+
define ( 'NETWORK_PUMPIO',           'pump');    // pump.io
define ( 'NETWORK_TWITTER',          'twit');    // Twitter
define ( 'NETWORK_DIASPORA2',        'dspc');    // Diaspora connector
define ( 'NETWORK_STATUSNET',        'stac');    // Statusnet connector
define ( 'NETWORK_APPNET',           'apdn');    // app.net
define ( 'NETWORK_NEWS',             'nntp');    // Network News Transfer Protocol
define ( 'NETWORK_ICALENDAR',        'ical');    // iCalendar
define ( 'NETWORK_PNUT',             'pnut');    // pnut.io
define ( 'NETWORK_PHANTOM',          'unkn');    // Place holder
/** @}*/

/**
 * These numbers are used in stored permissions
 * and existing allocations MUST NEVER BE CHANGED
 * OR RE-ASSIGNED! You may only add to them.
 */

$netgroup_ids = array(
	NETWORK_DFRN     => (-1),
	NETWORK_ZOT      => (-2),
	NETWORK_OSTATUS  => (-3),
	NETWORK_FEED     => (-4),
	NETWORK_DIASPORA => (-5),
	NETWORK_MAIL     => (-6),
	NETWORK_MAIL2    => (-7),
	NETWORK_FACEBOOK => (-8),
	NETWORK_LINKEDIN => (-9),
	NETWORK_XMPP     => (-10),
	NETWORK_MYSPACE  => (-11),
	NETWORK_GPLUS    => (-12),
	NETWORK_PUMPIO   => (-13),
	NETWORK_TWITTER  => (-14),
	NETWORK_DIASPORA2 => (-15),
	NETWORK_STATUSNET => (-16),
	NETWORK_APPNET    => (-17),
	NETWORK_NEWS      => (-18),
	NETWORK_ICALENDAR => (-19),
	NETWORK_PNUT      => (-20),

	NETWORK_PHANTOM  => (-127),
);


/**
 * Maximum number of "people who like (or don't like) this"  that we will list by name
 */

define ( 'MAX_LIKERS',    75);

/**
 * Communication timeout
 */

define ( 'ZCURL_TIMEOUT' , (-1));


/**
 * @name Notify
 *
 * Email notification options
 * @{
 */
define ( 'NOTIFY_INTRO',    0x0001 );
define ( 'NOTIFY_CONFIRM',  0x0002 );
define ( 'NOTIFY_WALL',     0x0004 );
define ( 'NOTIFY_COMMENT',  0x0008 );
define ( 'NOTIFY_MAIL',     0x0010 );
define ( 'NOTIFY_SUGGEST',  0x0020 );
define ( 'NOTIFY_PROFILE',  0x0040 );
define ( 'NOTIFY_TAGSELF',  0x0080 );
define ( 'NOTIFY_TAGSHARE', 0x0100 );
define ( 'NOTIFY_POKE',     0x0200 );
define ( 'NOTIFY_SHARE',    0x0400 );

define ( 'NOTIFY_SYSTEM',   0x8000 );
/* @}*/


/**
 * @name Term
 *
 * Tag/term types
 * @{
 */
define ( 'TERM_UNKNOWN',   0 );
define ( 'TERM_HASHTAG',   1 );
define ( 'TERM_MENTION',   2 );
define ( 'TERM_CATEGORY',  3 );
define ( 'TERM_PCATEGORY', 4 );
define ( 'TERM_FILE',      5 );
define ( 'TERM_SAVEDSEARCH', 6 );
define ( 'TERM_CONVERSATION', 7 );

define ( 'TERM_OBJ_POST',  1 );
define ( 'TERM_OBJ_PHOTO', 2 );



/**
 * @name Namespaces
 *
 * Various namespaces we may need to parse
 * @{
 */
define ( 'NAMESPACE_ZOT',             'http://purl.org/zot' );
define ( 'NAMESPACE_DFRN' ,           'http://purl.org/macgirvin/dfrn/1.0' );
define ( 'NAMESPACE_THREAD' ,         'http://purl.org/syndication/thread/1.0' );
define ( 'NAMESPACE_TOMB' ,           'http://purl.org/atompub/tombstones/1.0' );
define ( 'NAMESPACE_ACTIVITY',        'http://activitystrea.ms/spec/1.0/' );
define ( 'NAMESPACE_ACTIVITY_SCHEMA', 'http://activitystrea.ms/schema/1.0/' );
define ( 'NAMESPACE_MEDIA',           'http://purl.org/syndication/atommedia' );
define ( 'NAMESPACE_SALMON_ME',       'http://salmon-protocol.org/ns/magic-env' );
define ( 'NAMESPACE_OSTATUSSUB',      'http://ostatus.org/schema/1.0/subscribe' );
define ( 'NAMESPACE_GEORSS',          'http://www.georss.org/georss' );
define ( 'NAMESPACE_POCO',            'http://portablecontacts.net/spec/1.0' );
define ( 'NAMESPACE_FEED',            'http://schemas.google.com/g/2010#updates-from' );
define ( 'NAMESPACE_OSTATUS',         'http://ostatus.org/schema/1.0' );
define ( 'NAMESPACE_STATUSNET',       'http://status.net/schema/api/1/' );
define ( 'NAMESPACE_ATOM1',           'http://www.w3.org/2005/Atom' );
/* @}*/

/**
 * @name Activity
 *
 * Activity stream defines
 * @{
 */
define ( 'ACTIVITY_LIKE',        NAMESPACE_ACTIVITY_SCHEMA . 'like' );
define ( 'ACTIVITY_DISLIKE',     NAMESPACE_DFRN            . '/dislike' );
define ( 'ACTIVITY_ATTEND',      NAMESPACE_ZOT             . '/activity/attendyes' );
define ( 'ACTIVITY_ATTENDNO',    NAMESPACE_ZOT             . '/activity/attendno' );
define ( 'ACTIVITY_ATTENDMAYBE', NAMESPACE_ZOT             . '/activity/attendmaybe' );

define ( 'ACTIVITY_OBJ_HEART',   NAMESPACE_DFRN            . '/heart' );

define ( 'ACTIVITY_FRIEND',      NAMESPACE_ACTIVITY_SCHEMA . 'make-friend' );
define ( 'ACTIVITY_REQ_FRIEND',  NAMESPACE_ACTIVITY_SCHEMA . 'request-friend' );
define ( 'ACTIVITY_UNFRIEND',    NAMESPACE_ACTIVITY_SCHEMA . 'remove-friend' );
define ( 'ACTIVITY_FOLLOW',      NAMESPACE_ACTIVITY_SCHEMA . 'follow' );
define ( 'ACTIVITY_UNFOLLOW',    NAMESPACE_ACTIVITY_SCHEMA . 'stop-following' );
define ( 'ACTIVITY_JOIN',        NAMESPACE_ACTIVITY_SCHEMA . 'join' );

define ( 'ACTIVITY_POST',        NAMESPACE_ACTIVITY_SCHEMA . 'post' );
define ( 'ACTIVITY_UPDATE',      NAMESPACE_ACTIVITY_SCHEMA . 'update' );
define ( 'ACTIVITY_TAG',         NAMESPACE_ACTIVITY_SCHEMA . 'tag' );
define ( 'ACTIVITY_FAVORITE',    NAMESPACE_ACTIVITY_SCHEMA . 'favorite' );
define ( 'ACTIVITY_SHARE',       NAMESPACE_ACTIVITY_SCHEMA . 'share' );

define ( 'ACTIVITY_POKE',        NAMESPACE_ZOT . '/activity/poke' );
define ( 'ACTIVITY_MOOD',        NAMESPACE_ZOT . '/activity/mood' );

define ( 'ACTIVITY_OBJ_BOOKMARK', NAMESPACE_ACTIVITY_SCHEMA . 'bookmark' );
define ( 'ACTIVITY_OBJ_COMMENT', NAMESPACE_ACTIVITY_SCHEMA . 'comment' );
define ( 'ACTIVITY_OBJ_NOTE',    NAMESPACE_ACTIVITY_SCHEMA . 'note' );
define ( 'ACTIVITY_OBJ_PERSON',  NAMESPACE_ACTIVITY_SCHEMA . 'person' );
define ( 'ACTIVITY_OBJ_IMAGE',   NAMESPACE_ACTIVITY_SCHEMA . 'image' );
define ( 'ACTIVITY_OBJ_PHOTO',   NAMESPACE_ACTIVITY_SCHEMA . 'photo' );
define ( 'ACTIVITY_OBJ_VIDEO',   NAMESPACE_ACTIVITY_SCHEMA . 'video' );
define ( 'ACTIVITY_OBJ_P_PHOTO', NAMESPACE_ACTIVITY_SCHEMA . 'profile-photo' );
define ( 'ACTIVITY_OBJ_ALBUM',   NAMESPACE_ACTIVITY_SCHEMA . 'photo-album' );
define ( 'ACTIVITY_OBJ_EVENT',   NAMESPACE_ACTIVITY_SCHEMA . 'event' );
define ( 'ACTIVITY_OBJ_GROUP',   NAMESPACE_ACTIVITY_SCHEMA . 'group' );
define ( 'ACTIVITY_OBJ_TAGTERM', NAMESPACE_DFRN            . '/tagterm' );
define ( 'ACTIVITY_OBJ_PROFILE', NAMESPACE_DFRN            . '/profile' );
define ( 'ACTIVITY_OBJ_QUESTION', 'http://activityschema.org/object/question' );
/* @}*/

/**
 * @name Gravity
 *
 * Item weight for query ordering
 * @{
 */
define ( 'GRAVITY_PARENT',       0);
define ( 'GRAVITY_LIKE',         3);
define ( 'GRAVITY_COMMENT',      6);
/* @}*/

/**
 * @name Priority
 *
 * Process priority for the worker
 * @{
 */
define('PRIORITY_UNDEFINED',  0);
define('PRIORITY_CRITICAL',  10);
define('PRIORITY_HIGH',      20);
define('PRIORITY_MEDIUM',    30);
define('PRIORITY_LOW',       40);
define('PRIORITY_NEGLIGIBLE',50);
/* @}*/

/**
 * @name Social Relay settings
 *
 * See here: https://github.com/jaywink/social-relay
 * and here: https://wiki.diasporafoundation.org/Relay_servers_for_public_posts
 * @{
 */
define('SR_SCOPE_NONE', '');
define('SR_SCOPE_ALL',  'all');
define('SR_SCOPE_TAGS', 'tags');
/* @}*/

// Normally this constant is defined - but not if "pcntl" isn't installed
if (!defined("SIGTERM"))
	define("SIGTERM", 15);

/**
 *
 * Reverse the effect of magic_quotes_gpc if it is enabled.
 * Please disable magic_quotes_gpc so we don't have to do this.
 * See http://php.net/manual/en/security.magicquotes.disabling.php
 *
 */

function startup() {

	error_reporting(E_ERROR | E_WARNING | E_PARSE);

	set_time_limit(0);

	// This has to be quite large to deal with embedded private photos
	ini_set('pcre.backtrack_limit', 500000);


	if (get_magic_quotes_gpc()) {
		$process = array(&$_GET, &$_POST, &$_COOKIE, &$_REQUEST);
		while (list($key, $val) = each($process)) {
			foreach ($val as $k => $v) {
				unset($process[$key][$k]);
				if (is_array($v)) {
					$process[$key][stripslashes($k)] = $v;
					$process[] = &$process[$key][stripslashes($k)];
				} else {
					$process[$key][stripslashes($k)] = stripslashes($v);
				}
			}
		}
		unset($process);
	}

}

/**
 *
 * 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  $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.
	 */
	function __construct() {

		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();

		set_include_path(
				'include' . PATH_SEPARATOR
				. 'library' . PATH_SEPARATOR
				. 'library/phpsec' . PATH_SEPARATOR
				. 'library/langdet' . PATH_SEPARATOR
				. '.' );