4 * This file defines some global constants and includes the central App class.
10 * Friendica is a communications platform for integrated social communications
11 * utilising decentralised communications and linkage to several indie social
12 * projects - as well as popular mainstream providers.
14 * Our mission is to free our friends and families from the clutches of
15 * data-harvesting corporations, and pave the way to a future where social
16 * communications are free and open and flow between alternate providers as
17 * easily as email does today.
20 require_once __DIR__ . DIRECTORY_SEPARATOR . 'vendor' . DIRECTORY_SEPARATOR . 'autoload.php';
23 use Friendica\BaseObject;
24 use Friendica\Core\Addon;
25 use Friendica\Core\Cache;
26 use Friendica\Core\Config;
27 use Friendica\Core\L10n;
28 use Friendica\Core\PConfig;
29 use Friendica\Core\Protocol;
30 use Friendica\Core\System;
31 use Friendica\Core\Worker;
32 use Friendica\Database\DBA;
33 use Friendica\Database\DBStructure;
34 use Friendica\Model\Contact;
35 use Friendica\Model\Conversation;
36 use Friendica\Util\DateTimeFormat;
38 require_once 'include/text.php';
40 define('FRIENDICA_PLATFORM', 'Friendica');
41 define('FRIENDICA_CODENAME', 'The Tazmans Flax-lily');
42 define('FRIENDICA_VERSION', '2018.08-dev');
43 define('DFRN_PROTOCOL_VERSION', '2.23');
44 define('DB_UPDATE_VERSION', 1283);
45 define('NEW_UPDATE_ROUTINE_VERSION', 1170);
48 * @brief Constants for the database update check
50 const DB_UPDATE_NOT_CHECKED = 0; // Database check wasn't executed before
51 const DB_UPDATE_SUCCESSFUL = 1; // Database check was successful
52 const DB_UPDATE_FAILED = 2; // Database check failed
55 * @brief Constant with a HTML line break.
57 * Contains a HTML line break (br) element and a real carriage return with line
58 * feed for the source.
59 * This can be used in HTML and JavaScript where needed a line break.
61 define('EOL', "<br />\r\n");
64 * @brief Image storage quality.
66 * Lower numbers save space at cost of image detail.
67 * For ease of upgrade, please do not change here. Set [system] jpegquality = n in config/local.ini.php,
68 * where n is between 1 and 100, and with very poor results below about 50
70 define('JPEG_QUALITY', 100);
73 * [system] png_quality = n where is between 0 (uncompressed) to 9
75 define('PNG_QUALITY', 8);
78 * An alternate way of limiting picture upload sizes. Specify the maximum pixel
79 * length that pictures are allowed to be (for non-square pictures, it will apply
80 * to the longest side). Pictures longer than this length will be resized to be
81 * this length (on the longest side, the other side will be scaled appropriately).
82 * Modify this value using
85 * max_image_length = n;
87 * in config/local.ini.php
89 * If you don't want to set a maximum length, set to -1. The default value is
90 * defined by 'MAX_IMAGE_LENGTH' below.
92 define('MAX_IMAGE_LENGTH', -1);
97 define('DEFAULT_DB_ENGINE', 'InnoDB');
102 * SSL redirection policies
105 define('SSL_POLICY_NONE', 0);
106 define('SSL_POLICY_FULL', 1);
107 define('SSL_POLICY_SELFSIGN', 2);
116 define('LOGGER_WARNING', 0);
117 define('LOGGER_INFO', 1);
118 define('LOGGER_TRACE', 2);
119 define('LOGGER_DEBUG', 3);
120 define('LOGGER_DATA', 4);
121 define('LOGGER_ALL', 5);
126 * @deprecated since version 3.6
132 define('CACHE_MONTH', Cache::MONTH);
133 define('CACHE_WEEK', Cache::WEEK);
134 define('CACHE_DAY', Cache::DAY);
135 define('CACHE_HOUR', Cache::HOUR);
136 define('CACHE_HALF_HOUR', Cache::HALF_HOUR);
137 define('CACHE_QUARTER_HOUR', Cache::QUARTER_HOUR);
138 define('CACHE_FIVE_MINUTES', Cache::FIVE_MINUTES);
139 define('CACHE_MINUTE', Cache::MINUTE);
145 * Registration policies
148 define('REGISTER_CLOSED', 0);
149 define('REGISTER_APPROVE', 1);
150 define('REGISTER_OPEN', 2);
158 * DB update return values
161 define('UPDATE_SUCCESS', 0);
162 define('UPDATE_FAILED', 1);
170 * Type of the community page
173 define('CP_NO_INTERNAL_COMMUNITY', -2);
174 define('CP_NO_COMMUNITY_PAGE', -1);
175 define('CP_USERS_ON_SERVER', 0);
176 define('CP_GLOBAL_COMMUNITY', 1);
177 define('CP_USERS_AND_GLOBAL', 2);
183 * These numbers are used in stored permissions
184 * and existing allocations MUST NEVER BE CHANGED
185 * OR RE-ASSIGNED! You may only add to them.
188 Protocol::DFRN => (-1),
189 Protocol::ZOT => (-2),
190 Protocol::OSTATUS => (-3),
191 Protocol::FEED => (-4),
192 Protocol::DIASPORA => (-5),
193 Protocol::MAIL => (-6),
194 Protocol::FACEBOOK => (-8),
195 Protocol::LINKEDIN => (-9),
196 Protocol::XMPP => (-10),
197 Protocol::MYSPACE => (-11),
198 Protocol::GPLUS => (-12),
199 Protocol::PUMPIO => (-13),
200 Protocol::TWITTER => (-14),
201 Protocol::DIASPORA2 => (-15),
202 Protocol::STATUSNET => (-16),
203 Protocol::NEWS => (-18),
204 Protocol::ICALENDAR => (-19),
205 Protocol::PNUT => (-20),
207 Protocol::PHANTOM => (-127),
211 * Maximum number of "people who like (or don't like) this" that we will list by name
213 define('MAX_LIKERS', 75);
216 * Communication timeout
218 define('ZCURL_TIMEOUT', (-1));
223 * Email notification options
226 define('NOTIFY_INTRO', 0x0001);
227 define('NOTIFY_CONFIRM', 0x0002);
228 define('NOTIFY_WALL', 0x0004);
229 define('NOTIFY_COMMENT', 0x0008);
230 define('NOTIFY_MAIL', 0x0010);
231 define('NOTIFY_SUGGEST', 0x0020);
232 define('NOTIFY_PROFILE', 0x0040);
233 define('NOTIFY_TAGSELF', 0x0080);
234 define('NOTIFY_TAGSHARE', 0x0100);
235 define('NOTIFY_POKE', 0x0200);
236 define('NOTIFY_SHARE', 0x0400);
238 define('SYSTEM_EMAIL', 0x4000);
240 define('NOTIFY_SYSTEM', 0x8000);
250 define('TERM_UNKNOWN', 0);
251 define('TERM_HASHTAG', 1);
252 define('TERM_MENTION', 2);
253 define('TERM_CATEGORY', 3);
254 define('TERM_PCATEGORY', 4);
255 define('TERM_FILE', 5);
256 define('TERM_SAVEDSEARCH', 6);
257 define('TERM_CONVERSATION', 7);
259 define('TERM_OBJ_POST', 1);
260 define('TERM_OBJ_PHOTO', 2);
265 * Various namespaces we may need to parse
268 define('NAMESPACE_ZOT', 'http://purl.org/zot');
269 define('NAMESPACE_DFRN', 'http://purl.org/macgirvin/dfrn/1.0');
270 define('NAMESPACE_THREAD', 'http://purl.org/syndication/thread/1.0');
271 define('NAMESPACE_TOMB', 'http://purl.org/atompub/tombstones/1.0');
272 define('NAMESPACE_ACTIVITY', 'http://activitystrea.ms/spec/1.0/');
273 define('NAMESPACE_ACTIVITY_SCHEMA', 'http://activitystrea.ms/schema/1.0/');
274 define('NAMESPACE_MEDIA', 'http://purl.org/syndication/atommedia');
275 define('NAMESPACE_SALMON_ME', 'http://salmon-protocol.org/ns/magic-env');
276 define('NAMESPACE_OSTATUSSUB', 'http://ostatus.org/schema/1.0/subscribe');
277 define('NAMESPACE_GEORSS', 'http://www.georss.org/georss');
278 define('NAMESPACE_POCO', 'http://portablecontacts.net/spec/1.0');
279 define('NAMESPACE_FEED', 'http://schemas.google.com/g/2010#updates-from');
280 define('NAMESPACE_OSTATUS', 'http://ostatus.org/schema/1.0');
281 define('NAMESPACE_STATUSNET', 'http://status.net/schema/api/1/');
282 define('NAMESPACE_ATOM1', 'http://www.w3.org/2005/Atom');
283 define('NAMESPACE_MASTODON', 'http://mastodon.social/schema/1.0');
289 * Activity stream defines
292 define('ACTIVITY_LIKE', NAMESPACE_ACTIVITY_SCHEMA . 'like');
293 define('ACTIVITY_DISLIKE', NAMESPACE_DFRN . '/dislike');
294 define('ACTIVITY_ATTEND', NAMESPACE_ZOT . '/activity/attendyes');
295 define('ACTIVITY_ATTENDNO', NAMESPACE_ZOT . '/activity/attendno');
296 define('ACTIVITY_ATTENDMAYBE', NAMESPACE_ZOT . '/activity/attendmaybe');
298 define('ACTIVITY_OBJ_HEART', NAMESPACE_DFRN . '/heart');
300 define('ACTIVITY_FRIEND', NAMESPACE_ACTIVITY_SCHEMA . 'make-friend');
301 define('ACTIVITY_REQ_FRIEND', NAMESPACE_ACTIVITY_SCHEMA . 'request-friend');
302 define('ACTIVITY_UNFRIEND', NAMESPACE_ACTIVITY_SCHEMA . 'remove-friend');
303 define('ACTIVITY_FOLLOW', NAMESPACE_ACTIVITY_SCHEMA . 'follow');
304 define('ACTIVITY_UNFOLLOW', NAMESPACE_ACTIVITY_SCHEMA . 'stop-following');
305 define('ACTIVITY_JOIN', NAMESPACE_ACTIVITY_SCHEMA . 'join');
307 define('ACTIVITY_POST', NAMESPACE_ACTIVITY_SCHEMA . 'post');
308 define('ACTIVITY_UPDATE', NAMESPACE_ACTIVITY_SCHEMA . 'update');
309 define('ACTIVITY_TAG', NAMESPACE_ACTIVITY_SCHEMA . 'tag');
310 define('ACTIVITY_FAVORITE', NAMESPACE_ACTIVITY_SCHEMA . 'favorite');
311 define('ACTIVITY_UNFAVORITE', NAMESPACE_ACTIVITY_SCHEMA . 'unfavorite');
312 define('ACTIVITY_SHARE', NAMESPACE_ACTIVITY_SCHEMA . 'share');
313 define('ACTIVITY_DELETE', NAMESPACE_ACTIVITY_SCHEMA . 'delete');
315 define('ACTIVITY_POKE', NAMESPACE_ZOT . '/activity/poke');
317 define('ACTIVITY_OBJ_BOOKMARK', NAMESPACE_ACTIVITY_SCHEMA . 'bookmark');
318 define('ACTIVITY_OBJ_COMMENT', NAMESPACE_ACTIVITY_SCHEMA . 'comment');
319 define('ACTIVITY_OBJ_NOTE', NAMESPACE_ACTIVITY_SCHEMA . 'note');
320 define('ACTIVITY_OBJ_PERSON', NAMESPACE_ACTIVITY_SCHEMA . 'person');
321 define('ACTIVITY_OBJ_IMAGE', NAMESPACE_ACTIVITY_SCHEMA . 'image');
322 define('ACTIVITY_OBJ_PHOTO', NAMESPACE_ACTIVITY_SCHEMA . 'photo');
323 define('ACTIVITY_OBJ_VIDEO', NAMESPACE_ACTIVITY_SCHEMA . 'video');
324 define('ACTIVITY_OBJ_P_PHOTO', NAMESPACE_ACTIVITY_SCHEMA . 'profile-photo');
325 define('ACTIVITY_OBJ_ALBUM', NAMESPACE_ACTIVITY_SCHEMA . 'photo-album');
326 define('ACTIVITY_OBJ_EVENT', NAMESPACE_ACTIVITY_SCHEMA . 'event');
327 define('ACTIVITY_OBJ_GROUP', NAMESPACE_ACTIVITY_SCHEMA . 'group');
328 define('ACTIVITY_OBJ_TAGTERM', NAMESPACE_DFRN . '/tagterm');
329 define('ACTIVITY_OBJ_PROFILE', NAMESPACE_DFRN . '/profile');
330 define('ACTIVITY_OBJ_QUESTION', 'http://activityschema.org/object/question');
336 * Item weight for query ordering
339 define('GRAVITY_PARENT', 0);
340 define('GRAVITY_ACTIVITY', 3);
341 define('GRAVITY_COMMENT', 6);
342 define('GRAVITY_UNKNOWN', 9);
348 * Process priority for the worker
351 define('PRIORITY_UNDEFINED', 0);
352 define('PRIORITY_CRITICAL', 10);
353 define('PRIORITY_HIGH', 20);
354 define('PRIORITY_MEDIUM', 30);
355 define('PRIORITY_LOW', 40);
356 define('PRIORITY_NEGLIGIBLE', 50);
360 * @name Social Relay settings
362 * See here: https://github.com/jaywink/social-relay
363 * and here: https://wiki.diasporafoundation.org/Relay_servers_for_public_posts
366 define('SR_SCOPE_NONE', '');
367 define('SR_SCOPE_ALL', 'all');
368 define('SR_SCOPE_TAGS', 'tags');
372 * Lowest possible date time value
374 define('NULL_DATE', '0001-01-01 00:00:00');
376 // Normally this constant is defined - but not if "pcntl" isn't installed
377 if (!defined("SIGTERM")) {
378 define("SIGTERM", 15);
382 * Depending on the PHP version this constant does exist - or not.
383 * See here: http://php.net/manual/en/curl.constants.php#117928
385 if (!defined('CURLE_OPERATION_TIMEDOUT')) {
386 define('CURLE_OPERATION_TIMEDOUT', CURLE_OPERATION_TIMEOUTED);
390 * @brief Retrieve the App structure
392 * Useful in functions which require it but don't get it passed to them
398 return BaseObject::getApp();
402 * @brief Multi-purpose function to check variable state.
404 * Usage: x($var) or $x($array, 'key')
406 * returns false if variable/key is not set
407 * if variable is set, returns 1 if has 'non-zero' value, otherwise returns 0.
408 * e.g. x('') or x(0) returns 0;
410 * @param string|array $s variable to check
411 * @param string $k key inside the array to check
415 function x($s, $k = null)
418 if ((is_array($s)) && (array_key_exists($k, $s))) {
437 * Return the provided variable value if it exists and is truthy or the provided
438 * default value instead.
440 * Works with initialized variables and potentially uninitialized array keys
443 * - defaults($var, $default)
444 * - defaults($array, 'key', $default)
446 * @brief Returns a defaut value if the provided variable or array key is falsy
450 function defaults() {
451 $args = func_get_args();
453 if (count($args) < 2) {
454 throw new BadFunctionCallException('defaults() requires at least 2 parameters');
456 if (count($args) > 3) {
457 throw new BadFunctionCallException('defaults() cannot use more than 3 parameters');
459 if (count($args) === 3 && is_null($args[1])) {
460 throw new BadFunctionCallException('defaults($arr, $key, $def) $key is null');
463 $default = array_pop($args);
465 if (call_user_func_array('x', $args)) {
466 if (count($args) === 1) {
469 $return = $args[0][$args[1]];
479 * @brief Returns the baseurl.
481 * @see System::baseUrl()
484 * @TODO Function is deprecated and only used in some addons
488 return System::baseUrl();
492 * @brief Return absolut URL for given $path.
494 * @param string $path given path
498 function absurl($path)
500 if (strpos($path, '/') === 0) {
501 return z_path() . $path;
507 * @brief Function to check if request was an AJAX (xmlhttprequest) request.
513 return (!empty($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest');
517 * @brief Function to check if request was an AJAX (xmlhttprequest) request.
519 * @param boolean $via_worker boolean Is the check run via the worker?
521 function check_db($via_worker)
523 $build = Config::get('system', 'build');
526 Config::set('system', 'build', DB_UPDATE_VERSION - 1);
527 $build = DB_UPDATE_VERSION - 1;
530 // We don't support upgrading from very old versions anymore
531 if ($build < NEW_UPDATE_ROUTINE_VERSION) {
532 die('You try to update from a version prior to database version 1170. The direct upgrade path is not supported. Please update to version 3.5.4 before updating to this version.');
535 if ($build < DB_UPDATE_VERSION) {
536 // When we cannot execute the database update via the worker, we will do it directly
537 if (!Worker::add(PRIORITY_CRITICAL, 'DBUpdate') && $via_worker) {
544 * Sets the base url for use in cmdline programs which don't have
547 * @param object $a App
549 function check_url(App $a)
551 $url = Config::get('system', 'url');
553 // if the url isn't set or the stored url is radically different
554 // than the currently visited url, store the current value accordingly.
555 // "Radically different" ignores common variations such as http vs https
556 // and www.example.com vs example.com.
557 // We will only change the url to an ip address if there is no existing setting
559 if (empty($url) || (!link_compare($url, System::baseUrl())) && (!preg_match("/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/", $a->get_hostname()))) {
560 Config::set('system', 'url', System::baseUrl());
567 * @brief Automatic database updates
568 * @param object $a App
572 $build = Config::get('system', 'build');
574 if (empty($build) || ($build > DB_UPDATE_VERSION)) {
575 $build = DB_UPDATE_VERSION - 1;
576 Config::set('system', 'build', $build);
579 if ($build != DB_UPDATE_VERSION) {
580 require_once 'update.php';
582 $stored = intval($build);
583 $current = intval(DB_UPDATE_VERSION);
584 if ($stored < $current) {
585 Config::load('database');
587 // Compare the current structure with the defined structure
588 $t = Config::get('database', 'dbupdate_' . DB_UPDATE_VERSION);
593 // run the pre_update_nnnn functions in update.php
594 for ($x = $stored + 1; $x <= $current; $x++) {
595 $r = run_update_function($x, 'pre_update');
601 Config::set('database', 'dbupdate_' . DB_UPDATE_VERSION, time());
603 // update the structure in one call
604 $retval = DBStructure::update(false, true);
606 DBStructure::updateFail(
612 Config::set('database', 'dbupdate_' . DB_UPDATE_VERSION, 'success');
615 // run the update_nnnn functions in update.php
616 for ($x = $stored + 1; $x <= $current; $x++) {
617 $r = run_update_function($x, 'update');
628 function run_update_function($x, $prefix)
630 $funcname = $prefix . '_' . $x;
632 if (function_exists($funcname)) {
633 // There could be a lot of processes running or about to run.
634 // We want exactly one process to run the update command.
635 // So store the fact that we're taking responsibility
636 // after first checking to see if somebody else already has.
637 // If the update fails or times-out completely you may need to
638 // delete the config entry to try again.
640 $t = Config::get('database', $funcname);
644 Config::set('database', $funcname, time());
646 // call the specific update
647 $retval = $funcname();
650 //send the administrator an e-mail
651 DBStructure::updateFail(
653 L10n::t('Update %s failed. See error logs.', $x)
657 Config::set('database', $funcname, 'success');
659 if ($prefix == 'update') {
660 Config::set('system', 'build', $x);
666 Config::set('database', $funcname, 'success');
668 if ($prefix == 'update') {
669 Config::set('system', 'build', $x);
677 * @brief Synchronise addons:
679 * system.addon contains a comma-separated list of names
680 * of addons which are used on this system.
681 * Go through the database list of already installed addons, and if we have
682 * an entry, but it isn't in the config list, call the uninstall procedure
683 * and mark it uninstalled in the database (for now we'll remove it).
684 * Then go through the config list and if we have a addon that isn't installed,
685 * call the install procedure and add it to the database.
687 * @param object $a App
689 function check_addons(App $a)
691 $r = q("SELECT * FROM `addon` WHERE `installed` = 1");
692 if (DBA::isResult($r)) {
698 $addons = Config::get('system', 'addon');
702 $addons_arr = explode(',', str_replace(' ', '', $addons));
705 $a->addons = $addons_arr;
709 if (count($installed)) {
710 foreach ($installed as $i) {
711 if (!in_array($i['name'], $addons_arr)) {
712 Addon::uninstall($i['name']);
714 $installed_arr[] = $i['name'];
719 if (count($addons_arr)) {
720 foreach ($addons_arr as $p) {
721 if (!in_array($p, $installed_arr)) {
733 * @brief Used to end the current process, after saving session state.
742 * @brief Redirect to another URL and terminate this process.
744 function goaway($path)
746 if (strstr(normalise_link($path), 'http://')) {
749 $url = System::baseUrl() . '/' . ltrim($path, '/');
752 header("Location: $url");
757 * @brief Returns the user id of locally logged in user or false.
759 * @return int|bool user id or false
761 function local_user()
763 if (!empty($_SESSION['authenticated']) && !empty($_SESSION['uid'])) {
764 return intval($_SESSION['uid']);
770 * @brief Returns the public contact id of logged in user or false.
772 * @return int|bool public contact id or false
774 function public_contact()
776 static $public_contact_id = false;
778 if (!$public_contact_id && x($_SESSION, 'authenticated')) {
779 if (x($_SESSION, 'my_address')) {
781 $public_contact_id = intval(Contact::getIdForURL($_SESSION['my_address'], 0, true));
782 } elseif (x($_SESSION, 'visitor_home')) {
784 $public_contact_id = intval(Contact::getIdForURL($_SESSION['visitor_home'], 0, true));
786 } elseif (!x($_SESSION, 'authenticated')) {
787 $public_contact_id = false;
790 return $public_contact_id;
794 * @brief Returns contact id of authenticated site visitor or false
796 * @return int|bool visitor_id or false
798 function remote_user()
800 // You cannot be both local and remote.
801 // Unncommented by rabuzarus because remote authentication to local
802 // profiles wasn't possible anymore (2018-04-12).
803 // if (local_user()) {
807 if (empty($_SESSION)) {
811 if (x($_SESSION, 'authenticated') && x($_SESSION, 'visitor_id')) {
812 return intval($_SESSION['visitor_id']);
818 * @brief Show an error message to user.
820 * This function save text in session, to be shown to the user at next page load
822 * @param string $s - Text of notice
826 if (empty($_SESSION)) {
831 if (!x($_SESSION, 'sysmsg')) {
832 $_SESSION['sysmsg'] = [];
834 if ($a->interactive) {
835 $_SESSION['sysmsg'][] = $s;
840 * @brief Show an info message to user.
842 * This function save text in session, to be shown to the user at next page load
844 * @param string $s - Text of notice
850 if (local_user() && PConfig::get(local_user(), 'system', 'ignore_info')) {
854 if (!x($_SESSION, 'sysmsg_info')) {
855 $_SESSION['sysmsg_info'] = [];
857 if ($a->interactive) {
858 $_SESSION['sysmsg_info'][] = $s;
862 function feed_birthday($uid, $tz)
865 * Determine the next birthday, but only if the birthday is published
866 * in the default profile. We _could_ also look for a private profile that the
867 * recipient can see, but somebody could get mad at us if they start getting
868 * public birthday greetings when they haven't made this info public.
870 * Assuming we are able to publish this info, we are then going to convert
871 * the start time from the owner's timezone to UTC.
873 * This will potentially solve the problem found with some social networks
874 * where birthdays are converted to the viewer's timezone and salutations from
875 * elsewhere in the world show up on the wrong day. We will convert it to the
876 * viewer's timezone also, but first we are going to convert it from the birthday
877 * person's timezone to GMT - so the viewer may find the birthday starting at
878 * 6:00PM the day before, but that will correspond to midnight to the birthday person.
886 $profile = DBA::selectFirst('profile', ['dob'], ['is-default' => true, 'uid' => $uid]);
887 if (DBA::isResult($profile)) {
888 $tmp_dob = substr($profile['dob'], 5);
889 if (intval($tmp_dob)) {
890 $y = DateTimeFormat::timezoneNow($tz, 'Y');
891 $bd = $y . '-' . $tmp_dob . ' 00:00';
892 $t_dob = strtotime($bd);
893 $now = strtotime(DateTimeFormat::timezoneNow($tz));
895 $bd = $y + 1 . '-' . $tmp_dob . ' 00:00';
897 $birthday = DateTimeFormat::convert($bd, 'UTC', $tz, DateTimeFormat::ATOM);
905 * @brief Check if current user has admin role.
907 * @return bool true if user is an admin
909 function is_site_admin()
913 $admin_email = Config::get('config', 'admin_email');
915 $adminlist = explode(',', str_replace(' ', '', $admin_email));
917 return local_user() && $admin_email && in_array(defaults($a->user, 'email', ''), $adminlist);
921 * @brief Returns querystring as string from a mapped array.
923 * @param array $params mapped array with query parameters
924 * @param string $name of parameter, default null
928 function build_querystring($params, $name = null)
931 foreach ($params as $key => $val) {
932 if (is_array($val)) {
933 /// @TODO maybe not compare against null, use is_null()
935 $ret .= build_querystring($val, $key);
937 $ret .= build_querystring($val, $name . "[$key]");
940 $val = urlencode($val);
941 /// @TODO maybe not compare against null, use is_null()
943 /// @TODO two string concated, can be merged to one
944 $ret .= $name . "[$key]" . "=$val&";
946 $ret .= "$key=$val&";
953 function explode_querystring($query)
955 $arg_st = strpos($query, '?');
956 if ($arg_st !== false) {
957 $base = substr($query, 0, $arg_st);
964 $args = explode('&', substr($query, $arg_st));
965 foreach ($args as $k => $arg) {
966 /// @TODO really compare type-safe here?
971 $args = array_values($args);
976 $args = array_values($args);
986 * Returns the complete URL of the current page, e.g.: http(s)://something.com/network
988 * Taken from http://webcheatsheet.com/php/get_current_page_url.php
990 function curPageURL()
993 if (!empty($_SERVER["HTTPS"]) && ($_SERVER["HTTPS"] == "on")) {
999 if ($_SERVER["SERVER_PORT"] != "80" && $_SERVER["SERVER_PORT"] != "443") {
1000 $pageURL .= $_SERVER["SERVER_NAME"] . ":" . $_SERVER["SERVER_PORT"] . $_SERVER["REQUEST_URI"];
1002 $pageURL .= $_SERVER["SERVER_NAME"] . $_SERVER["REQUEST_URI"];
1007 function random_digits($digits)
1010 for ($i = 0; $i < $digits; $i++) {
1011 /// @TODO Avoid rand/mt_rand, when it comes to cryptography, they are generating predictable (seedable) numbers.
1017 function get_server()
1019 $server = Config::get("system", "directory");
1021 if ($server == "") {
1022 $server = "https://dir.friendica.social";
1028 function get_temppath()
1032 $temppath = Config::get("system", "temppath");
1034 if (($temppath != "") && App::directory_usable($temppath)) {
1035 // We have a temp path and it is usable
1036 return App::realpath($temppath);
1039 // We don't have a working preconfigured temp path, so we take the system path.
1040 $temppath = sys_get_temp_dir();
1042 // Check if it is usable
1043 if (($temppath != "") && App::directory_usable($temppath)) {
1044 // Always store the real path, not the path through symlinks
1045 $temppath = App::realpath($temppath);
1047 // To avoid any interferences with other systems we create our own directory
1048 $new_temppath = $temppath . "/" . $a->get_hostname();
1049 if (!is_dir($new_temppath)) {
1050 /// @TODO There is a mkdir()+chmod() upwards, maybe generalize this (+ configurable) into a function/method?
1051 mkdir($new_temppath);
1054 if (App::directory_usable($new_temppath)) {
1055 // The new path is usable, we are happy
1056 Config::set("system", "temppath", $new_temppath);
1057 return $new_temppath;
1059 // We can't create a subdirectory, strange.
1060 // But the directory seems to work, so we use it but don't store it.
1065 // Reaching this point means that the operating system is configured badly.
1069 function get_cachefile($file, $writemode = true)
1071 $cache = get_itemcachepath();
1073 if ((!$cache) || (!is_dir($cache))) {
1077 $subfolder = $cache . "/" . substr($file, 0, 2);
1079 $cachepath = $subfolder . "/" . $file;
1082 if (!is_dir($subfolder)) {
1084 chmod($subfolder, 0777);
1091 function clear_cache($basepath = "", $path = "")
1094 $basepath = get_itemcachepath();
1098 if (($path == "") || (!is_dir($path))) {
1102 if (substr(realpath($path), 0, strlen($basepath)) != $basepath) {
1106 $cachetime = (int) Config::get('system', 'itemcache_duration');
1107 if ($cachetime == 0) {
1111 if (is_writable($path)) {
1112 if ($dh = opendir($path)) {
1113 while (($file = readdir($dh)) !== false) {
1114 $fullpath = $path . "/" . $file;
1115 if ((filetype($fullpath) == "dir") && ($file != ".") && ($file != "..")) {
1116 clear_cache($basepath, $fullpath);
1118 if ((filetype($fullpath) == "file") && (filectime($fullpath) < (time() - $cachetime))) {
1127 function get_itemcachepath()
1129 // Checking, if the cache is deactivated
1130 $cachetime = (int) Config::get('system', 'itemcache_duration');
1131 if ($cachetime < 0) {
1135 $itemcache = Config::get('system', 'itemcache');
1136 if (($itemcache != "") && App::directory_usable($itemcache)) {
1137 return App::realpath($itemcache);
1140 $temppath = get_temppath();
1142 if ($temppath != "") {
1143 $itemcache = $temppath . "/itemcache";
1144 if (!file_exists($itemcache) && !is_dir($itemcache)) {
1148 if (App::directory_usable($itemcache)) {
1149 Config::set("system", "itemcache", $itemcache);
1157 * @brief Returns the path where spool files are stored
1159 * @return string Spool path
1161 function get_spoolpath()
1163 $spoolpath = Config::get('system', 'spoolpath');
1164 if (($spoolpath != "") && App::directory_usable($spoolpath)) {
1165 // We have a spool path and it is usable
1169 // We don't have a working preconfigured spool path, so we take the temp path.
1170 $temppath = get_temppath();
1172 if ($temppath != "") {
1173 // To avoid any interferences with other systems we create our own directory
1174 $spoolpath = $temppath . "/spool";
1175 if (!is_dir($spoolpath)) {
1179 if (App::directory_usable($spoolpath)) {
1180 // The new path is usable, we are happy
1181 Config::set("system", "spoolpath", $spoolpath);
1184 // We can't create a subdirectory, strange.
1185 // But the directory seems to work, so we use it but don't store it.
1190 // Reaching this point means that the operating system is configured badly.
1194 if (!function_exists('exif_imagetype')) {
1195 function exif_imagetype($file)
1197 $size = getimagesize($file);
1202 function validate_include(&$file)
1206 $file = realpath($file);
1208 if (strpos($file, getcwd()) !== 0) {
1212 $file = str_replace(getcwd() . "/", "", $file, $count);
1217 if ($orig_file !== $file) {
1222 if (strpos($file, "include/") === 0) {
1226 if (strpos($file, "addon/") === 0) {
1230 // Simply return flag
1234 function current_load()
1236 if (!function_exists('sys_getloadavg')) {
1240 $load_arr = sys_getloadavg();
1242 if (!is_array($load_arr)) {
1246 return max($load_arr[0], $load_arr[1]);
1250 * @brief get c-style args
1256 return get_app()->argc;
1260 * @brief Returns the value of a argv key
1262 * @param int $x argv key
1263 * @return string Value of the argv key
1267 if (array_key_exists($x, get_app()->argv)) {
1268 return get_app()->argv[$x];
1275 * @brief Get the data which is needed for infinite scroll
1277 * For invinite scroll we need the page number of the actual page
1278 * and the the URI where the content of the next page comes from.
1279 * This data is needed for the js part in main.js.
1280 * Note: infinite scroll does only work for the network page (module)
1282 * @param string $module The name of the module (e.g. "network")
1283 * @return array Of infinite scroll data
1284 * 'pageno' => $pageno The number of the actual page
1285 * 'reload_uri' => $reload_uri The URI of the content we have to load
1287 function infinite_scroll_data($module)
1289 if (PConfig::get(local_user(), 'system', 'infinite_scroll')
1290 && $module == 'network'
1291 && defaults($_GET, 'mode', '') != 'minimal'
1293 // get the page number
1294 $pageno = defaults($_GET, 'page', 1);
1298 // try to get the uri from which we load the content
1299 foreach ($_GET as $param => $value) {
1300 if (($param != "page") && ($param != "q")) {
1301 $reload_uri .= "&" . $param . "=" . urlencode($value);
1306 if ($a->page_offset != "" && !strstr($reload_uri, "&offset=")) {
1307 $reload_uri .= "&offset=" . urlencode($a->page_offset);
1310 $arr = ["pageno" => $pageno, "reload_uri" => $reload_uri];