5 define ( 'BUILD_ID', 1012 );
6 define ( 'DFRN_PROTOCOL_VERSION', '2.0' );
8 define ( 'EOL', "<br />\r\n" );
9 define ( 'ATOM_TIME', 'Y-m-d\TH:i:s\Z' );
11 // registration policy
13 define ( 'REGISTER_CLOSED', 0 );
14 define ( 'REGISTER_APPROVE', 1 );
15 define ( 'REGISTER_OPEN', 2 );
19 define ( 'REL_VIP', 1);
20 define ( 'REL_FAN', 2);
21 define ( 'REL_BUD', 3);
25 // PAGE_NORMAL is a typical personal profile account
26 // PAGE_SOAPBOX automatically approves all friend requests as REL_FAN, (readonly)
27 // PAGE_COMMUNITY automatically approves all friend requests as REL_FAN, but with
28 // write access to wall and comments (no email and not included in page owner's ACL lists)
29 // PAGE_FREELOVE automatically approves all friend requests as full friends (REL_BUD).
31 define ( 'PAGE_NORMAL', 0 );
32 define ( 'PAGE_SOAPBOX', 1 );
33 define ( 'PAGE_COMMUNITY', 2 );
34 define ( 'PAGE_FREELOVE', 3 );
36 // Maximum number of "people who like (or don't like) this"
37 // that we will list by name
39 define ( 'MAX_LIKERS', 75);
41 // email notification options
43 define ( 'NOTIFY_INTRO', 0x0001 );
44 define ( 'NOTIFY_CONFIRM', 0x0002 );
45 define ( 'NOTIFY_WALL', 0x0004 );
46 define ( 'NOTIFY_COMMENT', 0x0008 );
47 define ( 'NOTIFY_MAIL', 0x0010 );
49 // various namespaces we may need to parse
51 define ( 'NAMESPACE_DFRN' , 'http://purl.org/macgirvin/dfrn/1.0' );
52 define ( 'NAMESPACE_THREAD' , 'http://purl.org/syndication/thread/1.0' );
53 define ( 'NAMESPACE_TOMB' , 'http://purl.org/atompub/tombstones/1.0' );
54 define ( 'NAMESPACE_ACTIVITY', 'http://activitystrea.ms/spec/1.0/' );
55 define ( 'NAMESPACE_ACTIVITY_SCHEMA', 'http://activitystrea.ms/schema/1.0/' );
56 define ( 'NAMESPACE_SALMON_ME', 'http://salmon-protocol.org/ns/magic-env' );
57 define ( 'NAMESPACE_OSTATUSSUB', 'http://ostatus.org/schema/1.0/subscribe' );
58 define ( 'NAMESPACE_GEORSS', 'http://www.georss.org/georss' );
59 define ( 'NAMESPACE_POCO', 'http://portablecontacts.net/spec/1.0' );
60 define ( 'NAMESPACE_FEED', 'http://schemas.google.com/g/2010#updates-from' );
62 // activity stream defines
64 define ( 'ACTIVITY_LIKE', NAMESPACE_ACTIVITY_SCHEMA . 'like' );
65 define ( 'ACTIVITY_DISLIKE', NAMESPACE_DFRN . '/dislike' );
66 define ( 'ACTIVITY_OBJ_HEART', NAMESPACE_DFRN . '/heart' );
68 define ( 'ACTIVITY_FRIEND', NAMESPACE_ACTIVITY_SCHEMA . 'make-friend' );
69 define ( 'ACTIVITY_FOLLOW', NAMESPACE_ACTIVITY_SCHEMA . 'follow' );
70 define ( 'ACTIVITY_UNFOLLOW', NAMESPACE_ACTIVITY_SCHEMA . 'unfollow' );
71 define ( 'ACTIVITY_POST', NAMESPACE_ACTIVITY_SCHEMA . 'post' );
72 define ( 'ACTIVITY_UPDATE', NAMESPACE_ACTIVITY_SCHEMA . 'update' );
74 define ( 'ACTIVITY_OBJ_COMMENT', NAMESPACE_ACTIVITY_SCHEMA . 'comment' );
75 define ( 'ACTIVITY_OBJ_NOTE', NAMESPACE_ACTIVITY_SCHEMA . 'note' );
76 define ( 'ACTIVITY_OBJ_PERSON', NAMESPACE_ACTIVITY_SCHEMA . 'person' );
77 define ( 'ACTIVITY_OBJ_PHOTO', NAMESPACE_ACTIVITY_SCHEMA . 'photo' );
78 define ( 'ACTIVITY_OBJ_P_PHOTO', NAMESPACE_ACTIVITY_SCHEMA . 'profile-photo' );
79 define ( 'ACTIVITY_OBJ_ALBUM', NAMESPACE_ACTIVITY_SCHEMA . 'photo-album' );
81 // item weight for query ordering
83 define ( 'GRAVITY_PARENT', 0);
84 define ( 'GRAVITY_LIKE', 3);
85 define ( 'GRAVITY_COMMENT', 6);
88 // Our main application structure for the life of this page
89 // Primarily deals with the URL that got us here
90 // and tries to make some sense of it, and
91 // stores our page contents and config storage
92 // and anything else that might need to be passed around
93 // before we spit the page out.
95 if(! class_exists('App')) {
98 public $module_loaded = false;
107 public $error = false;
115 public $interactive = true;
123 private $curl_headers;
125 function __construct() {
127 $this->config = array();
128 $this->page = array();
129 $this->pager= array();
131 $this->scheme = ((isset($_SERVER['HTTPS']) && ($_SERVER['HTTPS'])) ? 'https' : 'http' );
133 if(x($_SERVER,'SERVER_NAME'))
134 $this->hostname = $_SERVER['SERVER_NAME'];
136 set_include_path("include/$this->hostname" . PATH_SEPARATOR . 'include' . PATH_SEPARATOR . '.' );
138 if((x($_SERVER,'QUERY_STRING')) && substr($_SERVER['QUERY_STRING'],0,2) == "q=")
139 $_SERVER['QUERY_STRING'] = substr($_SERVER['QUERY_STRING'],2);
141 $this->cmd = trim($_GET['q'],'/');
144 $this->argv = explode('/',$this->cmd);
145 $this->argc = count($this->argv);
146 if((array_key_exists('0',$this->argv)) && strlen($this->argv[0])) {
147 $this->module = $this->argv[0];
150 $this->module = 'home';
153 if($this->cmd === '.well-known/host-meta')
154 require_once('include/hostxrd.php');
156 $this->pager['page'] = ((x($_GET,'page')) ? $_GET['page'] : 1);
157 $this->pager['itemspage'] = 50;
158 $this->pager['start'] = ($this->pager['page'] * $this->pager['itemspage']) - $this->pager['itemspage'];
159 $this->pager['total'] = 0;
162 function get_baseurl($ssl = false) {
163 if(strlen($this->baseurl))
164 return $this->baseurl;
166 $this->baseurl = (($ssl) ? 'https' : $this->scheme) . "://" . $this->hostname . ((isset($this->path) && strlen($this->path)) ? '/' . $this->path : '' );
167 return $this->baseurl;
170 function set_baseurl($url) {
171 $this->baseurl = $url;
172 $this->hostname = basename($url);
175 function get_hostname() {
176 return $this->hostname;
179 function set_hostname($h) {
180 $this->hostname = $h;
183 function set_path($p) {
184 $this->path = trim(trim($p),'/');
187 function get_path() {
191 function set_pager_total($n) {
192 $this->pager['total'] = intval($n);
195 function set_pager_itemspage($n) {
196 $this->pager['itemspage'] = intval($n);
197 $this->pager['start'] = ($this->pager['page'] * $this->pager['itemspage']) - $this->pager['itemspage'];
201 function init_pagehead() {
202 $tpl = load_view_file("view/head.tpl");
203 $this->page['htmlhead'] = replace_macros($tpl,array(
204 '$baseurl' => $this->get_baseurl()
208 function set_curl_code($code) {
209 $this->curl_code = $code;
212 function get_curl_code() {
213 return $this->curl_code;
216 function set_curl_headers($headers) {
217 $this->curl_headers = $headers;
220 function get_curl_headers() {
221 return $this->curl_headers;
227 // retrieve the App structure
228 // useful in functions which require it but don't get it passed to them
230 if(! function_exists('get_app')) {
237 // Multi-purpose function to check variable state.
238 // Usage: x($var) or $x($array,'key')
239 // returns false if variable/key is not set
240 // if variable is set, returns 1 if has 'non-zero' value, otherwise returns 0.
241 // e.g. x('') or x(0) returns 0;
243 if(! function_exists('x')) {
244 function x($s,$k = NULL) {
246 if((is_array($s)) && (array_key_exists($k,$s))) {
264 // called from db initialisation if db is dead.
266 if(! function_exists('system_unavailable')) {
267 function system_unavailable() {
268 include('system_unavailable.php');
272 // Primarily involved with database upgrade, but also sets the
273 // base url for use in cmdline programs which don't have
274 // $_SERVER variables.
276 if(! function_exists('check_config')) {
277 function check_config(&$a) {
279 load_config('system');
281 $build = get_config('system','build');
283 $build = set_config('system','build',BUILD_ID);
285 $url = get_config('system','url');
287 $url = set_config('system','url',$a->get_baseurl());
289 if($build != BUILD_ID) {
290 $stored = intval($build);
291 $current = intval(BUILD_ID);
292 if(($stored < $current) && file_exists('update.php')) {
293 // We're reporting a different version than what is currently installed.
294 // Run any existing update scripts to bring the database up to current.
296 require_once('update.php');
297 for($x = $stored; $x < $current; $x ++) {
298 if(function_exists('update_' . $x)) {
299 $func = 'update_' . $x;
303 set_config('system','build', BUILD_ID);
310 // This is our template processor.
311 // $s is the string requiring macro substitution.
312 // $r is an array of key value pairs (search => replace)
313 // returns substituted string.
314 // WARNING: this is pretty basic, and doesn't properly handle search strings that are substrings of each other.
315 // For instance if 'test' => "foo" and 'testing' => "bar", testing could become either bar or fooing,
316 // depending on the order in which they were declared in the array.
318 if(! function_exists('replace_macros')) {
319 function replace_macros($s,$r) {
324 if(is_array($r) && count($r)) {
325 foreach ($r as $k => $v ) {
330 return str_replace($search,$replace,$s);
334 // load string translation table for alternate language
336 if(! function_exists('load_translation_table')) {
337 function load_translation_table($lang) {
340 if(file_exists("view/$lang/strings.php"))
341 include("view/$lang/strings.php");
344 // translate string if translation exists
346 if(! function_exists('t')) {
352 return $a->strings[$s];
356 // curl wrapper. If binary flag is true, return binary
359 if(! function_exists('fetch_url')) {
360 function fetch_url($url,$binary = false, &$redirects = 0) {
361 $ch = curl_init($url);
362 if(($redirects > 8) || (! $ch))
365 curl_setopt($ch, CURLOPT_HEADER, true);
366 curl_setopt($ch, CURLOPT_RETURNTRANSFER,true);
368 // by default we will allow self-signed certs
369 // but you can override this
371 $check_cert = get_config('system','verifyssl');
372 curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, (($check_cert) ? true : false));
374 $prx = get_config('system','proxy');
376 curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, 1);
377 curl_setopt($ch, CURLOPT_PROXY, $prx);
378 $prxusr = get_config('system','proxyuser');
380 curl_setopt($ch, CURLOPT_PROXYUSERPWD, $prxusr);
383 curl_setopt($ch, CURLOPT_BINARYTRANSFER,1);
387 $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
388 $header = substr($s,0,strpos($s,"\r\n\r\n"));
389 if(stristr($header,'100') && (strlen($header) < 30)) {
390 // 100 Continue has two headers, get the real one
391 $s = substr($s,strlen($header)+4);
392 $header = substr($s,0,strpos($s,"\r\n\r\n"));
394 if($http_code == 301 || $http_code == 302 || $http_code == 303) {
396 preg_match('/(Location:|URI:)(.*?)\n/', $header, $matches);
397 $url = trim(array_pop($matches));
398 $url_parsed = parse_url($url);
399 if (isset($url_parsed)) {
401 return fetch_url($url,$binary,$redirects);
405 $a->set_curl_code($http_code);
406 $body = substr($s,strlen($header)+4);
407 $a->set_curl_headers($header);
413 // post request to $url. $params is an array of post variables.
415 if(! function_exists('post_url')) {
416 function post_url($url,$params, $headers = null, &$redirects = 0) {
417 $ch = curl_init($url);
418 if(($redirects > 8) || (! $ch))
421 curl_setopt($ch, CURLOPT_HEADER, true);
422 curl_setopt($ch, CURLOPT_RETURNTRANSFER,true);
423 curl_setopt($ch, CURLOPT_POST,1);
424 curl_setopt($ch, CURLOPT_POSTFIELDS,$params);
426 if(is_array($headers))
427 curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
429 $check_cert = get_config('system','verifyssl');
430 curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, (($check_cert) ? true : false));
431 $prx = get_config('system','proxy');
433 curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, 1);
434 curl_setopt($ch, CURLOPT_PROXY, $prx);
435 $prxusr = get_config('system','proxyuser');
437 curl_setopt($ch, CURLOPT_PROXYUSERPWD, $prxusr);
442 $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
443 $header = substr($s,0,strpos($s,"\r\n\r\n"));
444 if(stristr($header,'100') && (strlen($header) < 30)) {
445 // 100 Continue has two headers, get the real one
446 $s = substr($s,strlen($header)+4);
447 $header = substr($s,0,strpos($s,"\r\n\r\n"));
449 if($http_code == 301 || $http_code == 302 || $http_code == 303) {
451 preg_match('/(Location:|URI:)(.*?)\n/', $header, $matches);
452 $url = trim(array_pop($matches));
453 $url_parsed = parse_url($url);
454 if (isset($url_parsed)) {
456 return post_url($url,$binary,$headers,$redirects);
460 $a->set_curl_code($http_code);
461 $body = substr($s,strlen($header)+4);
462 $a->set_curl_headers($header);
468 // random hash, 64 chars
470 if(! function_exists('random_string')) {
471 function random_string() {
472 return(hash('sha256',uniqid(rand(),true)));
475 // This is our primary input filter. The high bit hack only involved some old
476 // IE browser, forget which.
477 // Use this on any text input where angle chars are not valid or permitted
478 // They will be replaced with safer brackets. This may be filtered further
479 // if these are not allowed either.
481 if(! function_exists('notags')) {
482 function notags($string) {
483 // protect against :<> with high-bit set
484 return(str_replace(array("<",">","\xBA","\xBC","\xBE"), array('[',']','','',''), $string));
487 // use this on "body" or "content" input where angle chars shouldn't be removed,
488 // and allow them to be safely displayed.
490 if(! function_exists('escape_tags')) {
491 function escape_tags($string) {
493 return(htmlspecialchars($string));
496 // wrapper for adding a login box. If $register == true provide a registration
497 // link. This will most always depend on the value of $a->config['register_policy'].
498 // returns the complete html for inserting into the page
500 if(! function_exists('login')) {
501 function login($register = false) {
503 $register_html = (($register) ? load_view_file("view/register-link.tpl") : "");
506 if(x($_SESSION,'authenticated')) {
507 $o = load_view_file("view/logout.tpl");
510 $o = load_view_file("view/login.tpl");
512 $o = replace_macros($o,array('$register_html' => $register_html ));
517 // generate a string that's random, but usually pronounceable.
518 // used to generate initial passwords
520 if(! function_exists('autoname')) {
521 function autoname($len) {
523 $vowels = array('a','a','ai','au','e','e','e','ee','ea','i','ie','o','ou','u');
524 if(mt_rand(0,5) == 4)
542 's','sc','sh','sm','sp','st',
550 $midcons = array('ck','ct','gn','ld','lf','lm','lt','mb','mm', 'mn','mp',
551 'nd','ng','nk','nt','rn','rp','rt');
553 $noend = array('bl', 'br', 'cl','cr','dr','fl','fr','gl','gr',
554 'kh', 'kl','kr','mn','pl','pr','rh','tr','qu','wh');
556 $start = mt_rand(0,2);
564 for ($x = 0; $x < $len; $x ++) {
565 $r = mt_rand(0,count($table) - 1);
568 if($table == $vowels)
569 $table = array_merge($cons,$midcons);
575 $word = substr($word,0,$len);
577 foreach($noend as $noe) {
578 if((strlen($word) > 2) && (substr($word,-2) == $noe)) {
579 $word = substr($word,0,-1);
583 if(substr($word,-1) == 'q')
584 $word = substr($word,0,-1);
588 // Used to end the current process, after saving session state.
590 if(! function_exists('killme')) {
592 session_write_close();
596 // redirect to another URL and terminate this process.
598 if(! function_exists('goaway')) {
599 function goaway($s) {
600 header("Location: $s");
604 // Generic XML return
605 // Outputs a basic dfrn XML status structure to STDOUT, with a <status> variable
606 // of $st and an optional text <message> of $message and terminates the current process.
608 if(! function_exists('xml_status')) {
609 function xml_status($st, $message = '') {
612 $xml_message = "\t<message>" . xmlify($message) . "</message>\r\n";
614 header( "Content-type: text/xml" );
615 echo '<?xml version="1.0" encoding="UTF-8"?>'."\r\n";
616 echo "<result>\r\n\t<status>$st</status>\r\n$xml_message</result>\r\n";
620 // Returns the uid of locally logged in user or false.
622 if(! function_exists('local_user')) {
623 function local_user() {
624 if((x($_SESSION,'authenticated')) && (x($_SESSION,'uid')))
625 return intval($_SESSION['uid']);
629 // Returns contact id of authenticated site visitor or false
631 if(! function_exists('remote_user')) {
632 function remote_user() {
633 if((x($_SESSION,'authenticated')) && (x($_SESSION,'visitor_id')))
634 return intval($_SESSION['visitor_id']);
638 // contents of $s are displayed prominently on the page the next time
639 // a page is loaded. Usually used for errors or alerts.
641 if(! function_exists('notice')) {
642 function notice($s) {
645 $_SESSION['sysmsg'] .= $s;
648 // wrapper around config to limit the text length of an incoming message
650 if(! function_exists('get_max_import_size')) {
651 function get_max_import_size() {
653 return ((x($a->config,'max_import_size')) ? $a->config['max_import_size'] : 0 );
657 // escape text ($str) for XML transport
658 // returns escaped text.
660 if(! function_exists('xmlify')) {
661 function xmlify($str) {
664 for($x = 0; $x < strlen($str); $x ++) {
695 $buffer = trim($buffer);
700 // pass xml escaped text ($s), returns unescaped text
702 if(! function_exists('unxmlify')) {
703 function unxmlify($s) {
704 $ret = str_replace('&','&', $s);
705 $ret = str_replace(array('<','>','"','''),array('<','>','"',"'"),$ret);
709 // convenience wrapper, reverse the operation "bin2hex"
711 if(! function_exists('hex2bin')) {
712 function hex2bin($s) {
713 return(pack("H*",$s));
716 // Automatic pagination.
717 // To use, get the count of total items.
718 // Then call $a->set_pager_total($number_items);
719 // Optionally call $a->set_pager_itemspage($n) to the number of items to display on each page
720 // Then call paginate($a) after the end of the display loop to insert the pager block on the page
721 // (assuming there are enough items to paginate).
722 // When using with SQL, the setting LIMIT %d, %d => $a->pager['start'],$a->pager['itemspage']
723 // will limit the results to the correct items for the current page.
724 // The actual page handling is then accomplished at the application layer.
726 if(! function_exists('paginate')) {
727 function paginate(&$a) {
729 $stripped = ereg_replace("(&page=[0-9]*)","",$_SERVER['QUERY_STRING']);
730 $stripped = str_replace('q=','',$stripped);
731 $stripped = trim($stripped,'/');
732 $url = $a->get_baseurl() . '/' . $stripped;
735 if($a->pager['total'] > $a->pager['itemspage']) {
736 $o .= '<div class="pager">';
737 if($a->pager['page'] != 1)
738 $o .= '<span class="pager_prev">'."<a href=\"$url".'&page='.($a->pager['page'] - 1).'">' . t('prev') . '</a></span> ';
740 $o .= "<span class=\"pager_first\"><a href=\"$url"."&page=1\">" . t('first') . "</a></span> ";
742 $numpages = $a->pager['total'] / $a->pager['itemspage'];
745 $numstop = $numpages;
748 $numstart = (($pagenum > 7) ? ($pagenum - 7) : 1);
749 $numstop = (($pagenum > ($numpages - 7)) ? $numpages : ($numstart + 14));
752 for($i = $numstart; $i <= $numstop; $i++){
753 if($i == $a->pager['page'])
754 $o .= '<span class="pager_current">'.(($i < 10) ? ' '.$i : $i);
756 $o .= "<span class=\"pager_n\"><a href=\"$url"."&page=$i\">".(($i < 10) ? ' '.$i : $i)."</a>";
760 if(($a->pager['total'] % $a->pager['itemspage']) != 0) {
761 if($i == $a->pager['page'])
762 $o .= '<span class="pager_current">'.(($i < 10) ? ' '.$i : $i);
764 $o .= "<span class=\"pager_n\"><a href=\"$url"."&page=$i\">".(($i < 10) ? ' '.$i : $i)."</a>";
768 $lastpage = (($numpages > intval($numpages)) ? intval($numpages)+1 : $numpages);
769 $o .= "<span class=\"pager_last\"><a href=\"$url"."&page=$lastpage\">" . t('last') . "</a></span> ";
771 if(($a->pager['total'] - ($a->pager['itemspage'] * $a->pager['page'])) > 0)
772 $o .= '<span class="pager_next">'."<a href=\"$url"."&page=".($a->pager['page'] + 1).'">' . t('next') . '</a></span>';
773 $o .= '</div>'."\r\n";
778 // Turn user/group ACLs stored as angle bracketed text into arrays
780 if(! function_exists('expand_acl')) {
781 function expand_acl($s) {
782 // turn string array of angle-bracketed elements into numeric array
783 // e.g. "<1><2><3>" => array(1,2,3);
787 $t = str_replace('<','',$s);
788 $a = explode('>',$t);
791 $ret[] = intval($aa);
797 // Used to wrap ACL elements in angle brackets for storage
799 if(! function_exists('sanitise_acl')) {
800 function sanitise_acl(&$item) {
802 $item = '<' . intval(notags(trim($item))) . '>';
807 // retrieve a "family" of config variables from database to cached storage
809 if(! function_exists('load_config')) {
810 function load_config($family) {
812 $r = q("SELECT * FROM `config` WHERE `cat` = '%s'",
818 $a->config[$family][$k] = $rr['v'];
823 // get a particular config variable given the family name
824 // and key. Returns false if not set.
825 // $instore is only used by the set_config function
826 // to determine if the key already exists in the DB
827 // If a key is found in the DB but doesn't exist in
828 // local config cache, pull it into the cache so we don't have
829 // to hit the DB again for this item.
831 if(! function_exists('get_config')) {
832 function get_config($family, $key, $instore = false) {
837 if(isset($a->config[$family][$key])) {
838 if($a->config[$family][$key] === '!<unset>!') {
841 return $a->config[$family][$key];
844 $ret = q("SELECT `v` FROM `config` WHERE `cat` = '%s' AND `k` = '%s' LIMIT 1",
849 $a->config[$family][$key] = $ret[0]['v'];
853 $a->config[$family][$key] = '!<unset>!';
858 // Store a config value ($value) in the category ($family)
859 // under the key ($key)
860 // Return the value, or false if the database update failed
862 if(! function_exists('set_config')) {
863 function set_config($family,$key,$value) {
866 $a->config[$family][$key] = $value;
868 if(get_config($family,$key,true) === false) {
869 $ret = q("INSERT INTO `config` ( `cat`, `k`, `v` ) VALUES ( '%s', '%s', '%s' ) ",
878 $ret = q("UPDATE `config` SET `v` = '%s' WHERE `cat` = '%s' AND `k` = '%s' LIMIT 1",
888 // convert an XML document to a normalised, case-corrected array
891 if(! function_exists('convert_xml_element_to_array')) {
892 function convert_xml_element_to_array($xml_element, &$recursion_depth=0) {
894 // If we're getting too deep, bail out
895 if ($recursion_depth > 512) {
899 if (!is_string($xml_element) &&
900 !is_array($xml_element) &&
901 (get_class($xml_element) == 'SimpleXMLElement')) {
902 $xml_element_copy = $xml_element;
903 $xml_element = get_object_vars($xml_element);
906 if (is_array($xml_element)) {
907 $result_array = array();
908 if (count($xml_element) <= 0) {
909 return (trim(strval($xml_element_copy)));
912 foreach($xml_element as $key=>$value) {
915 $result_array[strtolower($key)] =
916 convert_xml_element_to_array($value, $recursion_depth);
919 if ($recursion_depth == 0) {
920 $temp_array = $result_array;
921 $result_array = array(
922 strtolower($xml_element_copy->getName()) => $temp_array,
926 return ($result_array);
929 return (trim(strval($xml_element)));
933 // Given an email style address, perform webfinger lookup and
934 // return the resulting DFRN profile URL, or if no DFRN profile URL
935 // is located, returns an OStatus subscription template (prefixed
936 // with the string 'stat:' to identify it as on OStatus template).
937 // If this isn't an email style address just return $s.
938 // Return an empty string if email-style addresses but webfinger fails,
939 // or if the resultant personal XRD doesn't contain a supported
940 // subscription/friend-request attribute.
942 if(! function_exists('webfinger_dfrn')) {
943 function webfinger_dfrn($s) {
944 if(! strstr($s,'@')) {
947 $links = webfinger($s);
949 foreach($links as $link)
950 if($link['@attributes']['rel'] === NAMESPACE_DFRN)
951 return $link['@attributes']['href'];
952 foreach($links as $link)
953 if($link['@attributes']['rel'] === NAMESPACE_OSTATUSSUB)
954 return 'stat:' . $link['@attributes']['template'];
959 // Given an email style address, perform webfinger lookup and
960 // return the array of link attributes from the personal XRD file.
961 // On error/failure return an empty array.
964 if(! function_exists('webfinger')) {
965 function webfinger($s) {
968 $host = substr($s,strpos($s,'@') + 1);
971 $tpl = fetch_lrdd_template($host);
973 $pxrd = str_replace('{uri}', urlencode('acct:'.$s), $tpl);
974 $links = fetch_xrd_links($pxrd);
975 if(! count($links)) {
976 // try with double slashes
977 $pxrd = str_replace('{uri}', urlencode('acct://'.$s), $tpl);
978 $links = fetch_xrd_links($pxrd);
986 if(! function_exists('lrdd')) {
987 function lrdd($uri) {
991 if(strstr($uri,'@')) {
992 return(webfinger($uri));
995 $html = fetch_url($uri);
996 $headers = $a->get_curl_headers();
997 $lines = explode("\n",$headers);
999 foreach($lines as $line) {
1000 // TODO alter the following regex to support multiple relations (space separated)
1001 if((stristr($line,'link:')) && preg_match('/<([^>].*)>.*rel\=[\'\"]lrdd[\'\"]/',$line,$matches)) {
1002 $link = $matches[1];
1007 if(! isset($link)) {
1008 // parse the page of the supplied URL looking for rel links
1010 require_once('library/HTML5/Parser.php');
1011 $dom = HTML5_Parser::parse($html);
1014 $items = $dom->getElementsByTagName('link');
1016 foreach($items as $item) {
1017 $x = $item->getAttribute('rel');
1019 $link = $item->getAttribute('href');
1027 return(fetch_xrd_links($link));
1034 // Given a host name, locate the LRDD template from that
1035 // host. Returns the LRDD template or an empty string on
1038 if(! function_exists('fetch_lrdd_template')) {
1039 function fetch_lrdd_template($host) {
1041 $url = 'http://' . $host . '/.well-known/host-meta' ;
1042 $links = fetch_xrd_links($url);
1044 foreach($links as $link)
1045 if($link['@attributes']['rel'] && $link['@attributes']['rel'] === 'lrdd')
1046 $tpl = $link['@attributes']['template'];
1048 if(! strpos($tpl,'{uri}'))
1053 // Given a URL, retrieve the page as an XRD document.
1054 // Return an array of links.
1055 // on error/failure return empty array.
1057 if(! function_exists('fetch_xrd_links')) {
1058 function fetch_xrd_links($url) {
1060 $xml = fetch_url($url);
1063 $h = simplexml_load_string($xml);
1064 $arr = convert_xml_element_to_array($h);
1066 if(isset($arr['xrd']['link'])) {
1067 $link = $arr['xrd']['link'];
1068 if(! isset($link[0]))
1069 $links = array($link);
1077 // Convert an ACL array to a storable string
1079 if(! function_exists('perms2str')) {
1080 function perms2str($p) {
1083 if(is_array($tmp)) {
1084 array_walk($tmp,'sanitise_acl');
1085 $ret = implode('',$tmp);
1090 // generate a guaranteed unique (for this domain) item ID for ATOM
1091 // safe from birthday paradox
1093 if(! function_exists('item_new_uri')) {
1094 function item_new_uri($hostname,$uid) {
1098 $hash = random_string();
1100 $uri = "urn:X-dfrn:" . $hostname . ':' . $uid . ':' . $hash;
1102 $r = q("SELECT `id` FROM `item` WHERE `uri` = '%s' LIMIT 1",
1106 } while($dups == true);
1110 // Generate a guaranteed unique photo ID.
1111 // safe from birthday paradox
1113 if(! function_exists('photo_new_resource')) {
1114 function photo_new_resource() {
1118 $resource = hash('md5',uniqid(mt_rand(),true));
1119 $r = q("SELECT `id` FROM `photo` WHERE `resource-id` = '%s' LIMIT 1",
1124 } while($found == true);
1129 // Take a URL from the wild, prepend http:// if necessary
1130 // and check DNS to see if it's real
1131 // return true if it's OK, false if something is wrong with it
1133 if(! function_exists('validate_url')) {
1134 function validate_url(&$url) {
1135 if(substr($url,0,4) != 'http')
1136 $url = 'http://' . $url;
1137 $h = parse_url($url);
1142 if(! checkdnsrr($h['host'], 'ANY')) {
1148 // Check $url against our list of allowed sites,
1149 // wildcards allowed. If allowed_sites is unset return true;
1150 // If url is allowed, return true.
1151 // otherwise, return false
1153 if(! function_exists('allowed_url')) {
1154 function allowed_url($url) {
1156 $h = parse_url($url);
1162 $str_allowed = get_config('system','allowed_sites');
1168 $host = strtolower($h['host']);
1170 // always allow our own site
1172 if($host == strtolower($_SERVER['SERVER_NAME']))
1175 $fnmatch = function_exists('fnmatch');
1176 $allowed = explode(',',$str_allowed);
1178 if(count($allowed)) {
1179 foreach($allowed as $a) {
1180 $pat = strtolower(trim($a));
1181 if(($fnmatch && fnmatch($pat,$host)) || ($pat == $host)) {
1190 // check if email address is allowed to register here.
1191 // Compare against our list (wildcards allowed).
1192 // Returns false if not allowed, true if allowed or if
1193 // allowed list is not configured.
1195 if(! function_exists('allowed_email')) {
1196 function allowed_email($email) {
1199 $domain = strtolower(substr($email,strpos($email,'@') + 1));
1203 $str_allowed = get_config('system','allowed_email');
1209 $fnmatch = function_exists('fnmatch');
1210 $allowed = explode(',',$str_allowed);
1212 if(count($allowed)) {
1213 foreach($allowed as $a) {
1214 $pat = strtolower(trim($a));
1215 if(($fnmatch && fnmatch($pat,$host)) || ($pat == $host)) {
1224 // Format the like/dislike text for a profile item
1225 // $cnt = number of people who like/dislike the item
1226 // $arr = array of pre-linked names of likers/dislikers
1227 // $type = one of 'like, 'dislike'
1229 // returns formatted text
1231 if(! function_exists('format_like')) {
1232 function format_like($cnt,$arr,$type,$id) {
1235 $o .= $arr[0] . (($type === 'like') ? t(' likes this.') : t(' doesn\'t like this.')) . EOL ;
1237 $o .= '<span class="fakelink" onclick="openClose(\'' . $type . 'list-' . $id . '\');" >'
1238 . $cnt . ' ' . t('people') . '</span> ' . (($type === 'like') ? t('like this.') : t('don\'t like this.')) . EOL ;
1239 $total = count($arr);
1240 if($total >= MAX_LIKERS)
1241 $arr = array_slice($arr, 0, MAX_LIKERS - 1);
1242 if($total < MAX_LIKERS)
1243 $arr[count($arr)-1] = t('and') . ' ' . $arr[count($arr)-1];
1244 $str = implode(', ', $arr);
1245 if($total >= MAX_LIKERS)
1246 $str .= t(', and ') . $total - MAX_LIKERS . t(' other people');
1247 $str .= (($type === 'like') ? t(' like this.') : t(' don\'t like this.'));
1248 $o .= "\t" . '<div id="' . $type . 'list-' . $id . '" style="display: none;" >' . $str . '</div>';
1254 // wrapper to load a view template, checking for alternate
1255 // languages before falling back to the default
1257 if(! function_exists('load_view_file')) {
1258 function load_view_file($s) {
1261 $lang = get_config('system','language');
1262 if($lang && file_exists("$d/$lang/$b"))
1263 return file_get_contents("$d/$lang/$b");
1264 return file_get_contents($s);
1267 // for html,xml parsing - let's say you've got
1268 // an attribute foobar="class1 class2 class3"
1269 // and you want to find out if it contains 'class3'.
1270 // you can't use a normal sub string search because you
1271 // might match 'notclass3' and a regex to do the job is
1272 // possible but a bit complicated.
1273 // pass the attribute string as $attr and the attribute you
1274 // are looking for as $s - returns true if found, otherwise false
1276 if(! function_exists('attribute_contains')) {
1277 function attribute_contains($attr,$s) {
1278 $a = explode(' ', $attr);
1279 if(count($a) && in_array($s,$a))
1284 if(! function_exists('logger')) {
1285 function logger($msg) {
1287 $debugging = get_config('system','debugging');
1288 $logfile = get_config('system','logfile');
1290 if((! $debugging) || (! $logfile))
1293 @file_put_contents($logfile, datetime_convert() . ':' . session_id() . ' ' . $msg . "\n", FILE_APPEND);
1298 if(! function_exists('activity_match')) {
1299 function activity_match($haystack,$needle) {
1300 if(($haystack === $needle) || ((basename($needle) === $haystack) && strstr($needle,NAMESPACE_ACTIVITY_SCHEMA)))
1306 // Pull out all #hashtags and @person tags from $s;
1307 // We also get @person@domain.com - which would make
1308 // the regex quite complicated as tags can also
1309 // end a sentence. So we'll run through our results
1310 // and strip the period from any tags which end with one.
1311 // Returns array of tags found, or empty array.
1314 if(! function_exists('get_tags')) {
1315 function get_tags($s) {
1317 if(preg_match_all('/([@#][^ ,:?]*)([ ,:?]|$)/',$s,$match)) {
1318 foreach($match[1] as $match) {
1319 if(substr($match,-1,1) === '.')
1320 $ret[] = substr($match,0,-1);
1330 // quick and dirty quoted_printable encoding
1332 if(! function_exists('qp')) {
1334 return str_replace ("%","=",rawurlencode($s));