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', 1280);
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);
184 * @deprecated since version 3.6
187 * Different protocols that we are storing
190 define('PROTOCOL_UNKNOWN' , Conversation::PROTOCOL_UNKNOWN);
191 define('PROTOCOL_DFRN' , Conversation::PROTOCOL_DFRN);
192 define('PROTOCOL_DIASPORA' , Conversation::PROTOCOL_DIASPORA);
193 define('PROTOCOL_OSTATUS_SALMON' , Conversation::PROTOCOL_OSTATUS_SALMON);
194 define('PROTOCOL_OSTATUS_FEED' , Conversation::PROTOCOL_OSTATUS_FEED); // Deprecated
195 define('PROTOCOL_GS_CONVERSATION', Conversation::PROTOCOL_GS_CONVERSATION); // Deprecated
196 define('PROTOCOL_SPLITTED_CONV' , Conversation::PROTOCOL_SPLITTED_CONV);
202 * @name Network constants
203 * @deprecated since version 3.6
206 * Network and protocol family types
209 define('NETWORK_DFRN' , Protocol::DFRN); // Friendica, Mistpark, other DFRN implementations
210 define('NETWORK_ZOT' , Protocol::ZOT); // Zot! - Currently unsupported
211 define('NETWORK_OSTATUS' , Protocol::OSTATUS); // GNU-social, Pleroma, Mastodon, other OStatus implementations
212 define('NETWORK_FEED' , Protocol::FEED); // RSS/Atom feeds with no known "post/notify" protocol
213 define('NETWORK_DIASPORA' , Protocol::DIASPORA); // Diaspora
214 define('NETWORK_MAIL' , Protocol::MAIL); // IMAP/POP
215 define('NETWORK_FACEBOOK' , Protocol::FACEBOOK); // Facebook API
216 define('NETWORK_LINKEDIN' , Protocol::LINKEDIN); // LinkedIn
217 define('NETWORK_XMPP' , Protocol::XMPP); // XMPP - Currently unsupported
218 define('NETWORK_MYSPACE' , Protocol::MYSPACE); // MySpace - Currently unsupported
219 define('NETWORK_GPLUS' , Protocol::GPLUS); // Google+
220 define('NETWORK_PUMPIO' , Protocol::PUMPIO); // pump.io
221 define('NETWORK_TWITTER' , Protocol::TWITTER); // Twitter
222 define('NETWORK_DIASPORA2', Protocol::DIASPORA2); // Diaspora connector
223 define('NETWORK_STATUSNET', Protocol::STATUSNET); // Statusnet connector
224 define('NETWORK_APPNET' , Protocol::APPNET); // app.net - Dead protocol
225 define('NETWORK_NEWS' , Protocol::NEWS); // Network News Transfer Protocol - Currently unsupported
226 define('NETWORK_ICALENDAR', Protocol::ICALENDAR); // iCalendar - Currently unsupported
227 define('NETWORK_PNUT' , Protocol::PNUT); // pnut.io - Currently unsupported
228 define('NETWORK_PHANTOM' , Protocol::PHANTOM); // Place holder
234 * These numbers are used in stored permissions
235 * and existing allocations MUST NEVER BE CHANGED
236 * OR RE-ASSIGNED! You may only add to them.
239 NETWORK_DFRN => (-1),
241 NETWORK_OSTATUS => (-3),
242 NETWORK_FEED => (-4),
243 NETWORK_DIASPORA => (-5),
244 NETWORK_MAIL => (-6),
245 NETWORK_FACEBOOK => (-8),
246 NETWORK_LINKEDIN => (-9),
247 NETWORK_XMPP => (-10),
248 NETWORK_MYSPACE => (-11),
249 NETWORK_GPLUS => (-12),
250 NETWORK_PUMPIO => (-13),
251 NETWORK_TWITTER => (-14),
252 NETWORK_DIASPORA2 => (-15),
253 NETWORK_STATUSNET => (-16),
254 NETWORK_APPNET => (-17),
255 NETWORK_NEWS => (-18),
256 NETWORK_ICALENDAR => (-19),
257 NETWORK_PNUT => (-20),
259 NETWORK_PHANTOM => (-127),
263 * Maximum number of "people who like (or don't like) this" that we will list by name
265 define('MAX_LIKERS', 75);
268 * Communication timeout
270 define('ZCURL_TIMEOUT', (-1));
275 * Email notification options
278 define('NOTIFY_INTRO', 0x0001);
279 define('NOTIFY_CONFIRM', 0x0002);
280 define('NOTIFY_WALL', 0x0004);
281 define('NOTIFY_COMMENT', 0x0008);
282 define('NOTIFY_MAIL', 0x0010);
283 define('NOTIFY_SUGGEST', 0x0020);
284 define('NOTIFY_PROFILE', 0x0040);
285 define('NOTIFY_TAGSELF', 0x0080);
286 define('NOTIFY_TAGSHARE', 0x0100);
287 define('NOTIFY_POKE', 0x0200);
288 define('NOTIFY_SHARE', 0x0400);
290 define('SYSTEM_EMAIL', 0x4000);
292 define('NOTIFY_SYSTEM', 0x8000);
302 define('TERM_UNKNOWN', 0);
303 define('TERM_HASHTAG', 1);
304 define('TERM_MENTION', 2);
305 define('TERM_CATEGORY', 3);
306 define('TERM_PCATEGORY', 4);
307 define('TERM_FILE', 5);
308 define('TERM_SAVEDSEARCH', 6);
309 define('TERM_CONVERSATION', 7);
311 define('TERM_OBJ_POST', 1);
312 define('TERM_OBJ_PHOTO', 2);
317 * Various namespaces we may need to parse
320 define('NAMESPACE_ZOT', 'http://purl.org/zot');
321 define('NAMESPACE_DFRN', 'http://purl.org/macgirvin/dfrn/1.0');
322 define('NAMESPACE_THREAD', 'http://purl.org/syndication/thread/1.0');
323 define('NAMESPACE_TOMB', 'http://purl.org/atompub/tombstones/1.0');
324 define('NAMESPACE_ACTIVITY', 'http://activitystrea.ms/spec/1.0/');
325 define('NAMESPACE_ACTIVITY_SCHEMA', 'http://activitystrea.ms/schema/1.0/');
326 define('NAMESPACE_MEDIA', 'http://purl.org/syndication/atommedia');
327 define('NAMESPACE_SALMON_ME', 'http://salmon-protocol.org/ns/magic-env');
328 define('NAMESPACE_OSTATUSSUB', 'http://ostatus.org/schema/1.0/subscribe');
329 define('NAMESPACE_GEORSS', 'http://www.georss.org/georss');
330 define('NAMESPACE_POCO', 'http://portablecontacts.net/spec/1.0');
331 define('NAMESPACE_FEED', 'http://schemas.google.com/g/2010#updates-from');
332 define('NAMESPACE_OSTATUS', 'http://ostatus.org/schema/1.0');
333 define('NAMESPACE_STATUSNET', 'http://status.net/schema/api/1/');
334 define('NAMESPACE_ATOM1', 'http://www.w3.org/2005/Atom');
335 define('NAMESPACE_MASTODON', 'http://mastodon.social/schema/1.0');
341 * Activity stream defines
344 define('ACTIVITY_LIKE', NAMESPACE_ACTIVITY_SCHEMA . 'like');
345 define('ACTIVITY_DISLIKE', NAMESPACE_DFRN . '/dislike');
346 define('ACTIVITY_ATTEND', NAMESPACE_ZOT . '/activity/attendyes');
347 define('ACTIVITY_ATTENDNO', NAMESPACE_ZOT . '/activity/attendno');
348 define('ACTIVITY_ATTENDMAYBE', NAMESPACE_ZOT . '/activity/attendmaybe');
350 define('ACTIVITY_OBJ_HEART', NAMESPACE_DFRN . '/heart');
352 define('ACTIVITY_FRIEND', NAMESPACE_ACTIVITY_SCHEMA . 'make-friend');
353 define('ACTIVITY_REQ_FRIEND', NAMESPACE_ACTIVITY_SCHEMA . 'request-friend');
354 define('ACTIVITY_UNFRIEND', NAMESPACE_ACTIVITY_SCHEMA . 'remove-friend');
355 define('ACTIVITY_FOLLOW', NAMESPACE_ACTIVITY_SCHEMA . 'follow');
356 define('ACTIVITY_UNFOLLOW', NAMESPACE_ACTIVITY_SCHEMA . 'stop-following');
357 define('ACTIVITY_JOIN', NAMESPACE_ACTIVITY_SCHEMA . 'join');
359 define('ACTIVITY_POST', NAMESPACE_ACTIVITY_SCHEMA . 'post');
360 define('ACTIVITY_UPDATE', NAMESPACE_ACTIVITY_SCHEMA . 'update');
361 define('ACTIVITY_TAG', NAMESPACE_ACTIVITY_SCHEMA . 'tag');
362 define('ACTIVITY_FAVORITE', NAMESPACE_ACTIVITY_SCHEMA . 'favorite');
363 define('ACTIVITY_UNFAVORITE', NAMESPACE_ACTIVITY_SCHEMA . 'unfavorite');
364 define('ACTIVITY_SHARE', NAMESPACE_ACTIVITY_SCHEMA . 'share');
365 define('ACTIVITY_DELETE', NAMESPACE_ACTIVITY_SCHEMA . 'delete');
367 define('ACTIVITY_POKE', NAMESPACE_ZOT . '/activity/poke');
369 define('ACTIVITY_OBJ_BOOKMARK', NAMESPACE_ACTIVITY_SCHEMA . 'bookmark');
370 define('ACTIVITY_OBJ_COMMENT', NAMESPACE_ACTIVITY_SCHEMA . 'comment');
371 define('ACTIVITY_OBJ_NOTE', NAMESPACE_ACTIVITY_SCHEMA . 'note');
372 define('ACTIVITY_OBJ_PERSON', NAMESPACE_ACTIVITY_SCHEMA . 'person');
373 define('ACTIVITY_OBJ_IMAGE', NAMESPACE_ACTIVITY_SCHEMA . 'image');
374 define('ACTIVITY_OBJ_PHOTO', NAMESPACE_ACTIVITY_SCHEMA . 'photo');
375 define('ACTIVITY_OBJ_VIDEO', NAMESPACE_ACTIVITY_SCHEMA . 'video');
376 define('ACTIVITY_OBJ_P_PHOTO', NAMESPACE_ACTIVITY_SCHEMA . 'profile-photo');
377 define('ACTIVITY_OBJ_ALBUM', NAMESPACE_ACTIVITY_SCHEMA . 'photo-album');
378 define('ACTIVITY_OBJ_EVENT', NAMESPACE_ACTIVITY_SCHEMA . 'event');
379 define('ACTIVITY_OBJ_GROUP', NAMESPACE_ACTIVITY_SCHEMA . 'group');
380 define('ACTIVITY_OBJ_TAGTERM', NAMESPACE_DFRN . '/tagterm');
381 define('ACTIVITY_OBJ_PROFILE', NAMESPACE_DFRN . '/profile');
382 define('ACTIVITY_OBJ_QUESTION', 'http://activityschema.org/object/question');
388 * Item weight for query ordering
391 define('GRAVITY_PARENT', 0);
392 define('GRAVITY_ACTIVITY', 3);
393 define('GRAVITY_COMMENT', 6);
394 define('GRAVITY_UNKNOWN', 9);
400 * Process priority for the worker
403 define('PRIORITY_UNDEFINED', 0);
404 define('PRIORITY_CRITICAL', 10);
405 define('PRIORITY_HIGH', 20);
406 define('PRIORITY_MEDIUM', 30);
407 define('PRIORITY_LOW', 40);
408 define('PRIORITY_NEGLIGIBLE', 50);
412 * @name Social Relay settings
414 * See here: https://github.com/jaywink/social-relay
415 * and here: https://wiki.diasporafoundation.org/Relay_servers_for_public_posts
418 define('SR_SCOPE_NONE', '');
419 define('SR_SCOPE_ALL', 'all');
420 define('SR_SCOPE_TAGS', 'tags');
424 * Lowest possible date time value
426 define('NULL_DATE', '0001-01-01 00:00:00');
428 // Normally this constant is defined - but not if "pcntl" isn't installed
429 if (!defined("SIGTERM")) {
430 define("SIGTERM", 15);
434 * Depending on the PHP version this constant does exist - or not.
435 * See here: http://php.net/manual/en/curl.constants.php#117928
437 if (!defined('CURLE_OPERATION_TIMEDOUT')) {
438 define('CURLE_OPERATION_TIMEDOUT', CURLE_OPERATION_TIMEOUTED);
442 * @brief Retrieve the App structure
444 * Useful in functions which require it but don't get it passed to them
450 return BaseObject::getApp();
454 * @brief Multi-purpose function to check variable state.
456 * Usage: x($var) or $x($array, 'key')
458 * returns false if variable/key is not set
459 * if variable is set, returns 1 if has 'non-zero' value, otherwise returns 0.
460 * e.g. x('') or x(0) returns 0;
462 * @param string|array $s variable to check
463 * @param string $k key inside the array to check
467 function x($s, $k = null)
470 if ((is_array($s)) && (array_key_exists($k, $s))) {
489 * Return the provided variable value if it exists and is truthy or the provided
490 * default value instead.
492 * Works with initialized variables and potentially uninitialized array keys
495 * - defaults($var, $default)
496 * - defaults($array, 'key', $default)
498 * @brief Returns a defaut value if the provided variable or array key is falsy
502 function defaults() {
503 $args = func_get_args();
505 if (count($args) < 2) {
506 throw new BadFunctionCallException('defaults() requires at least 2 parameters');
508 if (count($args) > 3) {
509 throw new BadFunctionCallException('defaults() cannot use more than 3 parameters');
511 if (count($args) === 3 && is_null($args[1])) {
512 throw new BadFunctionCallException('defaults($arr, $key, $def) $key is null');
515 $default = array_pop($args);
517 if (call_user_func_array('x', $args)) {
518 if (count($args) === 1) {
521 $return = $args[0][$args[1]];
531 * @brief Returns the baseurl.
533 * @see System::baseUrl()
536 * @TODO Function is deprecated and only used in some addons
540 return System::baseUrl();
544 * @brief Return absolut URL for given $path.
546 * @param string $path given path
550 function absurl($path)
552 if (strpos($path, '/') === 0) {
553 return z_path() . $path;
559 * @brief Function to check if request was an AJAX (xmlhttprequest) request.
565 return (!empty($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest');
569 * @brief Function to check if request was an AJAX (xmlhttprequest) request.
571 * @param boolean $via_worker boolean Is the check run via the worker?
573 function check_db($via_worker)
575 $build = Config::get('system', 'build');
578 Config::set('system', 'build', DB_UPDATE_VERSION - 1);
579 $build = DB_UPDATE_VERSION - 1;
582 // We don't support upgrading from very old versions anymore
583 if ($build < NEW_UPDATE_ROUTINE_VERSION) {
584 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.');
587 if ($build < DB_UPDATE_VERSION) {
588 // When we cannot execute the database update via the worker, we will do it directly
589 if (!Worker::add(PRIORITY_CRITICAL, 'DBUpdate') && $via_worker) {
596 * Sets the base url for use in cmdline programs which don't have
599 * @param object $a App
601 function check_url(App $a)
603 $url = Config::get('system', 'url');
605 // if the url isn't set or the stored url is radically different
606 // than the currently visited url, store the current value accordingly.
607 // "Radically different" ignores common variations such as http vs https
608 // and www.example.com vs example.com.
609 // We will only change the url to an ip address if there is no existing setting
611 if (empty($url) || (!link_compare($url, System::baseUrl())) && (!preg_match("/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/", $a->get_hostname()))) {
612 Config::set('system', 'url', System::baseUrl());
619 * @brief Automatic database updates
620 * @param object $a App
624 $build = Config::get('system', 'build');
626 if (empty($build) || ($build > DB_UPDATE_VERSION)) {
627 $build = DB_UPDATE_VERSION - 1;
628 Config::set('system', 'build', $build);
631 if ($build != DB_UPDATE_VERSION) {
632 require_once 'update.php';
634 $stored = intval($build);
635 $current = intval(DB_UPDATE_VERSION);
636 if ($stored < $current) {
637 Config::load('database');
639 // Compare the current structure with the defined structure
640 $t = Config::get('database', 'dbupdate_' . DB_UPDATE_VERSION);
645 // run the pre_update_nnnn functions in update.php
646 for ($x = $stored + 1; $x <= $current; $x++) {
647 $r = run_update_function($x, 'pre_update');
653 Config::set('database', 'dbupdate_' . DB_UPDATE_VERSION, time());
655 // update the structure in one call
656 $retval = DBStructure::update(false, true);
658 DBStructure::updateFail(
664 Config::set('database', 'dbupdate_' . DB_UPDATE_VERSION, 'success');
667 // run the update_nnnn functions in update.php
668 for ($x = $stored + 1; $x <= $current; $x++) {
669 $r = run_update_function($x, 'update');
680 function run_update_function($x, $prefix)
682 $funcname = $prefix . '_' . $x;
684 if (function_exists($funcname)) {
685 // There could be a lot of processes running or about to run.
686 // We want exactly one process to run the update command.
687 // So store the fact that we're taking responsibility
688 // after first checking to see if somebody else already has.
689 // If the update fails or times-out completely you may need to
690 // delete the config entry to try again.
692 $t = Config::get('database', $funcname);
696 Config::set('database', $funcname, time());
698 // call the specific update
699 $retval = $funcname();
702 //send the administrator an e-mail
703 DBStructure::updateFail(
705 L10n::t('Update %s failed. See error logs.', $x)
709 Config::set('database', $funcname, 'success');
711 if ($prefix == 'update') {
712 Config::set('system', 'build', $x);
718 Config::set('database', $funcname, 'success');
720 if ($prefix == 'update') {
721 Config::set('system', 'build', $x);
729 * @brief Synchronise addons:
731 * system.addon contains a comma-separated list of names
732 * of addons which are used on this system.
733 * Go through the database list of already installed addons, and if we have
734 * an entry, but it isn't in the config list, call the uninstall procedure
735 * and mark it uninstalled in the database (for now we'll remove it).
736 * Then go through the config list and if we have a addon that isn't installed,
737 * call the install procedure and add it to the database.
739 * @param object $a App
741 function check_addons(App $a)
743 $r = q("SELECT * FROM `addon` WHERE `installed` = 1");
744 if (DBA::isResult($r)) {
750 $addons = Config::get('system', 'addon');
754 $addons_arr = explode(',', str_replace(' ', '', $addons));
757 $a->addons = $addons_arr;
761 if (count($installed)) {
762 foreach ($installed as $i) {
763 if (!in_array($i['name'], $addons_arr)) {
764 Addon::uninstall($i['name']);
766 $installed_arr[] = $i['name'];
771 if (count($addons_arr)) {
772 foreach ($addons_arr as $p) {
773 if (!in_array($p, $installed_arr)) {
785 * @brief Used to end the current process, after saving session state.
794 * @brief Redirect to another URL and terminate this process.
796 function goaway($path)
798 if (strstr(normalise_link($path), 'http://')) {
801 $url = System::baseUrl() . '/' . ltrim($path, '/');
804 header("Location: $url");
809 * @brief Returns the user id of locally logged in user or false.
811 * @return int|bool user id or false
813 function local_user()
815 if (!empty($_SESSION['authenticated']) && !empty($_SESSION['uid'])) {
816 return intval($_SESSION['uid']);
822 * @brief Returns the public contact id of logged in user or false.
824 * @return int|bool public contact id or false
826 function public_contact()
828 static $public_contact_id = false;
830 if (!$public_contact_id && x($_SESSION, 'authenticated')) {
831 if (x($_SESSION, 'my_address')) {
833 $public_contact_id = intval(Contact::getIdForURL($_SESSION['my_address'], 0, true));
834 } elseif (x($_SESSION, 'visitor_home')) {
836 $public_contact_id = intval(Contact::getIdForURL($_SESSION['visitor_home'], 0, true));
838 } elseif (!x($_SESSION, 'authenticated')) {
839 $public_contact_id = false;
842 return $public_contact_id;
846 * @brief Returns contact id of authenticated site visitor or false
848 * @return int|bool visitor_id or false
850 function remote_user()
852 // You cannot be both local and remote.
853 // Unncommented by rabuzarus because remote authentication to local
854 // profiles wasn't possible anymore (2018-04-12).
855 // if (local_user()) {
859 if (empty($_SESSION)) {
863 if (x($_SESSION, 'authenticated') && x($_SESSION, 'visitor_id')) {
864 return intval($_SESSION['visitor_id']);
870 * @brief Show an error message to user.
872 * This function save text in session, to be shown to the user at next page load
874 * @param string $s - Text of notice
878 if (empty($_SESSION)) {
883 if (!x($_SESSION, 'sysmsg')) {
884 $_SESSION['sysmsg'] = [];
886 if ($a->interactive) {
887 $_SESSION['sysmsg'][] = $s;
892 * @brief Show an info message to user.
894 * This function save text in session, to be shown to the user at next page load
896 * @param string $s - Text of notice
902 if (local_user() && PConfig::get(local_user(), 'system', 'ignore_info')) {
906 if (!x($_SESSION, 'sysmsg_info')) {
907 $_SESSION['sysmsg_info'] = [];
909 if ($a->interactive) {
910 $_SESSION['sysmsg_info'][] = $s;
914 function feed_birthday($uid, $tz)
917 * Determine the next birthday, but only if the birthday is published
918 * in the default profile. We _could_ also look for a private profile that the
919 * recipient can see, but somebody could get mad at us if they start getting
920 * public birthday greetings when they haven't made this info public.
922 * Assuming we are able to publish this info, we are then going to convert
923 * the start time from the owner's timezone to UTC.
925 * This will potentially solve the problem found with some social networks
926 * where birthdays are converted to the viewer's timezone and salutations from
927 * elsewhere in the world show up on the wrong day. We will convert it to the
928 * viewer's timezone also, but first we are going to convert it from the birthday
929 * person's timezone to GMT - so the viewer may find the birthday starting at
930 * 6:00PM the day before, but that will correspond to midnight to the birthday person.
939 "SELECT `dob` FROM `profile` WHERE `is-default` = 1 AND `uid` = %d LIMIT 1",
943 if (DBA::isResult($p)) {
944 $tmp_dob = substr($p[0]['dob'], 5);
945 if (intval($tmp_dob)) {
946 $y = DateTimeFormat::timezoneNow($tz, 'Y');
947 $bd = $y . '-' . $tmp_dob . ' 00:00';
948 $t_dob = strtotime($bd);
949 $now = strtotime(DateTimeFormat::timezoneNow($tz));
951 $bd = $y + 1 . '-' . $tmp_dob . ' 00:00';
953 $birthday = DateTimeFormat::convert($bd, 'UTC', $tz, DateTimeFormat::ATOM);
961 * @brief Check if current user has admin role.
963 * @return bool true if user is an admin
965 function is_site_admin()
969 $admin_email = Config::get('config', 'admin_email');
971 $adminlist = explode(',', str_replace(' ', '', $admin_email));
973 return local_user() && $admin_email && in_array(defaults($a->user, 'email', ''), $adminlist);
977 * @brief Returns querystring as string from a mapped array.
979 * @param array $params mapped array with query parameters
980 * @param string $name of parameter, default null
984 function build_querystring($params, $name = null)
987 foreach ($params as $key => $val) {
988 if (is_array($val)) {
989 /// @TODO maybe not compare against null, use is_null()
991 $ret .= build_querystring($val, $key);
993 $ret .= build_querystring($val, $name . "[$key]");
996 $val = urlencode($val);
997 /// @TODO maybe not compare against null, use is_null()
999 /// @TODO two string concated, can be merged to one
1000 $ret .= $name . "[$key]" . "=$val&";
1002 $ret .= "$key=$val&";
1009 function explode_querystring($query)
1011 $arg_st = strpos($query, '?');
1012 if ($arg_st !== false) {
1013 $base = substr($query, 0, $arg_st);
1020 $args = explode('&', substr($query, $arg_st));
1021 foreach ($args as $k => $arg) {
1022 /// @TODO really compare type-safe here?
1027 $args = array_values($args);
1032 $args = array_values($args);
1042 * Returns the complete URL of the current page, e.g.: http(s)://something.com/network
1044 * Taken from http://webcheatsheet.com/php/get_current_page_url.php
1046 function curPageURL()
1049 if (!empty($_SERVER["HTTPS"]) && ($_SERVER["HTTPS"] == "on")) {
1055 if ($_SERVER["SERVER_PORT"] != "80" && $_SERVER["SERVER_PORT"] != "443") {
1056 $pageURL .= $_SERVER["SERVER_NAME"] . ":" . $_SERVER["SERVER_PORT"] . $_SERVER["REQUEST_URI"];
1058 $pageURL .= $_SERVER["SERVER_NAME"] . $_SERVER["REQUEST_URI"];
1063 function random_digits($digits)
1066 for ($i = 0; $i < $digits; $i++) {
1067 /// @TODO Avoid rand/mt_rand, when it comes to cryptography, they are generating predictable (seedable) numbers.
1073 function get_server()
1075 $server = Config::get("system", "directory");
1077 if ($server == "") {
1078 $server = "https://dir.friendica.social";
1084 function get_temppath()
1088 $temppath = Config::get("system", "temppath");
1090 if (($temppath != "") && App::directory_usable($temppath)) {
1091 // We have a temp path and it is usable
1092 return App::realpath($temppath);
1095 // We don't have a working preconfigured temp path, so we take the system path.
1096 $temppath = sys_get_temp_dir();
1098 // Check if it is usable
1099 if (($temppath != "") && App::directory_usable($temppath)) {
1100 // Always store the real path, not the path through symlinks
1101 $temppath = App::realpath($temppath);
1103 // To avoid any interferences with other systems we create our own directory
1104 $new_temppath = $temppath . "/" . $a->get_hostname();
1105 if (!is_dir($new_temppath)) {
1106 /// @TODO There is a mkdir()+chmod() upwards, maybe generalize this (+ configurable) into a function/method?
1107 mkdir($new_temppath);
1110 if (App::directory_usable($new_temppath)) {
1111 // The new path is usable, we are happy
1112 Config::set("system", "temppath", $new_temppath);
1113 return $new_temppath;
1115 // We can't create a subdirectory, strange.
1116 // But the directory seems to work, so we use it but don't store it.
1121 // Reaching this point means that the operating system is configured badly.
1125 function get_cachefile($file, $writemode = true)
1127 $cache = get_itemcachepath();
1129 if ((!$cache) || (!is_dir($cache))) {
1133 $subfolder = $cache . "/" . substr($file, 0, 2);
1135 $cachepath = $subfolder . "/" . $file;
1138 if (!is_dir($subfolder)) {
1140 chmod($subfolder, 0777);
1147 function clear_cache($basepath = "", $path = "")
1150 $basepath = get_itemcachepath();
1154 if (($path == "") || (!is_dir($path))) {
1158 if (substr(realpath($path), 0, strlen($basepath)) != $basepath) {
1162 $cachetime = (int) Config::get('system', 'itemcache_duration');
1163 if ($cachetime == 0) {
1167 if (is_writable($path)) {
1168 if ($dh = opendir($path)) {
1169 while (($file = readdir($dh)) !== false) {
1170 $fullpath = $path . "/" . $file;
1171 if ((filetype($fullpath) == "dir") && ($file != ".") && ($file != "..")) {
1172 clear_cache($basepath, $fullpath);
1174 if ((filetype($fullpath) == "file") && (filectime($fullpath) < (time() - $cachetime))) {
1183 function get_itemcachepath()
1185 // Checking, if the cache is deactivated
1186 $cachetime = (int) Config::get('system', 'itemcache_duration');
1187 if ($cachetime < 0) {
1191 $itemcache = Config::get('system', 'itemcache');
1192 if (($itemcache != "") && App::directory_usable($itemcache)) {
1193 return App::realpath($itemcache);
1196 $temppath = get_temppath();
1198 if ($temppath != "") {
1199 $itemcache = $temppath . "/itemcache";
1200 if (!file_exists($itemcache) && !is_dir($itemcache)) {
1204 if (App::directory_usable($itemcache)) {
1205 Config::set("system", "itemcache", $itemcache);
1213 * @brief Returns the path where spool files are stored
1215 * @return string Spool path
1217 function get_spoolpath()
1219 $spoolpath = Config::get('system', 'spoolpath');
1220 if (($spoolpath != "") && App::directory_usable($spoolpath)) {
1221 // We have a spool path and it is usable
1225 // We don't have a working preconfigured spool path, so we take the temp path.
1226 $temppath = get_temppath();
1228 if ($temppath != "") {
1229 // To avoid any interferences with other systems we create our own directory
1230 $spoolpath = $temppath . "/spool";
1231 if (!is_dir($spoolpath)) {
1235 if (App::directory_usable($spoolpath)) {
1236 // The new path is usable, we are happy
1237 Config::set("system", "spoolpath", $spoolpath);
1240 // We can't create a subdirectory, strange.
1241 // But the directory seems to work, so we use it but don't store it.
1246 // Reaching this point means that the operating system is configured badly.
1250 if (!function_exists('exif_imagetype')) {
1251 function exif_imagetype($file)
1253 $size = getimagesize($file);
1258 function validate_include(&$file)
1262 $file = realpath($file);
1264 if (strpos($file, getcwd()) !== 0) {
1268 $file = str_replace(getcwd() . "/", "", $file, $count);
1273 if ($orig_file !== $file) {
1278 if (strpos($file, "include/") === 0) {
1282 if (strpos($file, "addon/") === 0) {
1286 // Simply return flag
1290 function current_load()
1292 if (!function_exists('sys_getloadavg')) {
1296 $load_arr = sys_getloadavg();
1298 if (!is_array($load_arr)) {
1302 return max($load_arr[0], $load_arr[1]);
1306 * @brief get c-style args
1312 return get_app()->argc;
1316 * @brief Returns the value of a argv key
1318 * @param int $x argv key
1319 * @return string Value of the argv key
1323 if (array_key_exists($x, get_app()->argv)) {
1324 return get_app()->argv[$x];
1331 * @brief Get the data which is needed for infinite scroll
1333 * For invinite scroll we need the page number of the actual page
1334 * and the the URI where the content of the next page comes from.
1335 * This data is needed for the js part in main.js.
1336 * Note: infinite scroll does only work for the network page (module)
1338 * @param string $module The name of the module (e.g. "network")
1339 * @return array Of infinite scroll data
1340 * 'pageno' => $pageno The number of the actual page
1341 * 'reload_uri' => $reload_uri The URI of the content we have to load
1343 function infinite_scroll_data($module)
1345 if (PConfig::get(local_user(), 'system', 'infinite_scroll')
1346 && $module == 'network'
1347 && defaults($_GET, 'mode', '') != 'minimal'
1349 // get the page number
1350 $pageno = defaults($_GET, 'page', 1);
1354 // try to get the uri from which we load the content
1355 foreach ($_GET as $param => $value) {
1356 if (($param != "page") && ($param != "q")) {
1357 $reload_uri .= "&" . $param . "=" . urlencode($value);
1362 if ($a->page_offset != "" && !strstr($reload_uri, "&offset=")) {
1363 $reload_uri .= "&offset=" . urlencode($a->page_offset);
1366 $arr = ["pageno" => $pageno, "reload_uri" => $reload_uri];