5 define ( 'BUILD_ID', 1021 );
6 define ( 'DFRN_PROTOCOL_VERSION', '2.0' );
8 define ( 'EOL', "<br />\r\n" );
9 define ( 'ATOM_TIME', 'Y-m-d\TH:i:s\Z' );
13 define ( 'LOGGER_NORMAL', 0 );
14 define ( 'LOGGER_TRACE', 1 );
15 define ( 'LOGGER_DEBUG', 2 );
16 define ( 'LOGGER_DATA', 3 );
17 define ( 'LOGGER_ALL', 4 );
19 // registration policy
21 define ( 'REGISTER_CLOSED', 0 );
22 define ( 'REGISTER_APPROVE', 1 );
23 define ( 'REGISTER_OPEN', 2 );
27 define ( 'REL_VIP', 1);
28 define ( 'REL_FAN', 2);
29 define ( 'REL_BUD', 3);
33 // PAGE_NORMAL is a typical personal profile account
34 // PAGE_SOAPBOX automatically approves all friend requests as REL_FAN, (readonly)
35 // PAGE_COMMUNITY automatically approves all friend requests as REL_FAN, but with
36 // write access to wall and comments (no email and not included in page owner's ACL lists)
37 // PAGE_FREELOVE automatically approves all friend requests as full friends (REL_BUD).
39 define ( 'PAGE_NORMAL', 0 );
40 define ( 'PAGE_SOAPBOX', 1 );
41 define ( 'PAGE_COMMUNITY', 2 );
42 define ( 'PAGE_FREELOVE', 3 );
44 // Maximum number of "people who like (or don't like) this"
45 // that we will list by name
47 define ( 'MAX_LIKERS', 75);
49 // email notification options
51 define ( 'NOTIFY_INTRO', 0x0001 );
52 define ( 'NOTIFY_CONFIRM', 0x0002 );
53 define ( 'NOTIFY_WALL', 0x0004 );
54 define ( 'NOTIFY_COMMENT', 0x0008 );
55 define ( 'NOTIFY_MAIL', 0x0010 );
57 // various namespaces we may need to parse
59 define ( 'NAMESPACE_DFRN' , 'http://purl.org/macgirvin/dfrn/1.0' );
60 define ( 'NAMESPACE_THREAD' , 'http://purl.org/syndication/thread/1.0' );
61 define ( 'NAMESPACE_TOMB' , 'http://purl.org/atompub/tombstones/1.0' );
62 define ( 'NAMESPACE_ACTIVITY', 'http://activitystrea.ms/spec/1.0/' );
63 define ( 'NAMESPACE_ACTIVITY_SCHEMA', 'http://activitystrea.ms/schema/1.0/' );
64 define ( 'NAMESPACE_MEDIA', 'http://purl.org/syndication/atommedia' );
65 define ( 'NAMESPACE_SALMON_ME', 'http://salmon-protocol.org/ns/magic-env' );
66 define ( 'NAMESPACE_OSTATUSSUB', 'http://ostatus.org/schema/1.0/subscribe' );
67 define ( 'NAMESPACE_GEORSS', 'http://www.georss.org/georss' );
68 define ( 'NAMESPACE_POCO', 'http://portablecontacts.net/spec/1.0' );
69 define ( 'NAMESPACE_FEED', 'http://schemas.google.com/g/2010#updates-from' );
71 // activity stream defines
73 define ( 'ACTIVITY_LIKE', NAMESPACE_ACTIVITY_SCHEMA . 'like' );
74 define ( 'ACTIVITY_DISLIKE', NAMESPACE_DFRN . '/dislike' );
75 define ( 'ACTIVITY_OBJ_HEART', NAMESPACE_DFRN . '/heart' );
77 define ( 'ACTIVITY_FRIEND', NAMESPACE_ACTIVITY_SCHEMA . 'make-friend' );
78 define ( 'ACTIVITY_FOLLOW', NAMESPACE_ACTIVITY_SCHEMA . 'follow' );
79 define ( 'ACTIVITY_UNFOLLOW', NAMESPACE_ACTIVITY_SCHEMA . 'unfollow' );
80 define ( 'ACTIVITY_POST', NAMESPACE_ACTIVITY_SCHEMA . 'post' );
81 define ( 'ACTIVITY_UPDATE', NAMESPACE_ACTIVITY_SCHEMA . 'update' );
82 define ( 'ACTIVITY_TAG', NAMESPACE_ACTIVITY_SCHEMA . 'tag' );
84 define ( 'ACTIVITY_OBJ_COMMENT', NAMESPACE_ACTIVITY_SCHEMA . 'comment' );
85 define ( 'ACTIVITY_OBJ_NOTE', NAMESPACE_ACTIVITY_SCHEMA . 'note' );
86 define ( 'ACTIVITY_OBJ_PERSON', NAMESPACE_ACTIVITY_SCHEMA . 'person' );
87 define ( 'ACTIVITY_OBJ_PHOTO', NAMESPACE_ACTIVITY_SCHEMA . 'photo' );
88 define ( 'ACTIVITY_OBJ_P_PHOTO', NAMESPACE_ACTIVITY_SCHEMA . 'profile-photo' );
89 define ( 'ACTIVITY_OBJ_ALBUM', NAMESPACE_ACTIVITY_SCHEMA . 'photo-album' );
91 // item weight for query ordering
93 define ( 'GRAVITY_PARENT', 0);
94 define ( 'GRAVITY_LIKE', 3);
95 define ( 'GRAVITY_COMMENT', 6);
97 // Please disable magic_quotes_gpc so we don't have to do this.
98 // See http://php.net/manual/en/security.magicquotes.disabling.php
100 if (get_magic_quotes_gpc()) {
101 $process = array(&$_GET, &$_POST, &$_COOKIE, &$_REQUEST);
102 while (list($key, $val) = each($process)) {
103 foreach ($val as $k => $v) {
104 unset($process[$key][$k]);
106 $process[$key][stripslashes($k)] = $v;
107 $process[] = &$process[$key][stripslashes($k)];
109 $process[$key][stripslashes($k)] = stripslashes($v);
117 // Our main application structure for the life of this page
118 // Primarily deals with the URL that got us here
119 // and tries to make some sense of it, and
120 // stores our page contents and config storage
121 // and anything else that might need to be passed around
122 // before we spit the page out.
124 if(! class_exists('App')) {
127 public $module_loaded = false;
136 public $error = false;
144 public $interactive = true;
152 private $curl_headers;
154 function __construct() {
156 $this->config = array();
157 $this->page = array();
158 $this->pager= array();
160 $this->scheme = ((isset($_SERVER['HTTPS']) && ($_SERVER['HTTPS'])) ? 'https' : 'http' );
162 if(x($_SERVER,'SERVER_NAME'))
163 $this->hostname = $_SERVER['SERVER_NAME'];
165 set_include_path("include/$this->hostname" . PATH_SEPARATOR . 'include' . PATH_SEPARATOR . '.' );
167 if((x($_SERVER,'QUERY_STRING')) && substr($_SERVER['QUERY_STRING'],0,2) === "q=")
168 $_SERVER['QUERY_STRING'] = substr($_SERVER['QUERY_STRING'],2);
170 $this->cmd = trim($_GET['q'],'/');
172 $path = trim(dirname($_SERVER['SCRIPT_NAME']),'/');
173 if(isset($path) && strlen($path) && ($path != $this->path))
176 $this->argv = explode('/',$this->cmd);
177 $this->argc = count($this->argv);
178 if((array_key_exists('0',$this->argv)) && strlen($this->argv[0])) {
179 $this->module = $this->argv[0];
182 $this->module = 'home';
185 if($this->cmd === '.well-known/host-meta')
186 require_once('include/hostxrd.php');
189 $this->pager['page'] = ((x($_GET,'page')) ? $_GET['page'] : 1);
190 $this->pager['itemspage'] = 50;
191 $this->pager['start'] = ($this->pager['page'] * $this->pager['itemspage']) - $this->pager['itemspage'];
192 $this->pager['total'] = 0;
195 function get_baseurl($ssl = false) {
196 if(strlen($this->baseurl))
197 return $this->baseurl;
199 $this->baseurl = (($ssl) ? 'https' : $this->scheme) . "://" . $this->hostname . ((isset($this->path) && strlen($this->path)) ? '/' . $this->path : '' );
200 return $this->baseurl;
203 function set_baseurl($url) {
204 $this->baseurl = $url;
205 $this->hostname = basename($url);
208 function get_hostname() {
209 return $this->hostname;
212 function set_hostname($h) {
213 $this->hostname = $h;
216 function set_path($p) {
217 $this->path = trim(trim($p),'/');
220 function get_path() {
224 function set_pager_total($n) {
225 $this->pager['total'] = intval($n);
228 function set_pager_itemspage($n) {
229 $this->pager['itemspage'] = intval($n);
230 $this->pager['start'] = ($this->pager['page'] * $this->pager['itemspage']) - $this->pager['itemspage'];
234 function init_pagehead() {
235 $tpl = load_view_file("view/head.tpl");
236 $this->page['htmlhead'] = replace_macros($tpl,array(
237 '$baseurl' => $this->get_baseurl() . '/'
241 function set_curl_code($code) {
242 $this->curl_code = $code;
245 function get_curl_code() {
246 return $this->curl_code;
249 function set_curl_headers($headers) {
250 $this->curl_headers = $headers;
253 function get_curl_headers() {
254 return $this->curl_headers;
260 // retrieve the App structure
261 // useful in functions which require it but don't get it passed to them
263 if(! function_exists('get_app')) {
270 // Multi-purpose function to check variable state.
271 // Usage: x($var) or $x($array,'key')
272 // returns false if variable/key is not set
273 // if variable is set, returns 1 if has 'non-zero' value, otherwise returns 0.
274 // e.g. x('') or x(0) returns 0;
276 if(! function_exists('x')) {
277 function x($s,$k = NULL) {
279 if((is_array($s)) && (array_key_exists($k,$s))) {
297 // called from db initialisation if db is dead.
299 if(! function_exists('system_unavailable')) {
300 function system_unavailable() {
301 include('system_unavailable.php');
305 // Primarily involved with database upgrade, but also sets the
306 // base url for use in cmdline programs which don't have
307 // $_SERVER variables.
309 if(! function_exists('check_config')) {
310 function check_config(&$a) {
312 load_config('system');
314 $build = get_config('system','build');
316 $build = set_config('system','build',BUILD_ID);
318 $url = get_config('system','url');
320 $url = set_config('system','url',$a->get_baseurl());
322 if($build != BUILD_ID) {
323 $stored = intval($build);
324 $current = intval(BUILD_ID);
325 if(($stored < $current) && file_exists('update.php')) {
326 // We're reporting a different version than what is currently installed.
327 // Run any existing update scripts to bring the database up to current.
329 require_once('update.php');
330 for($x = $stored; $x < $current; $x ++) {
331 if(function_exists('update_' . $x)) {
332 $func = 'update_' . $x;
336 set_config('system','build', BUILD_ID);
343 // This is our template processor.
344 // $s is the string requiring macro substitution.
345 // $r is an array of key value pairs (search => replace)
346 // returns substituted string.
347 // WARNING: this is pretty basic, and doesn't properly handle search strings that are substrings of each other.
348 // For instance if 'test' => "foo" and 'testing' => "bar", testing could become either bar or fooing,
349 // depending on the order in which they were declared in the array.
351 if(! function_exists('replace_macros')) {
352 function replace_macros($s,$r) {
357 if(is_array($r) && count($r)) {
358 foreach ($r as $k => $v ) {
363 return str_replace($search,$replace,$s);
367 // load string translation table for alternate language
369 if(! function_exists('load_translation_table')) {
370 function load_translation_table($lang) {
373 if(file_exists("view/$lang/strings.php"))
374 include("view/$lang/strings.php");
377 // translate string if translation exists
379 if(! function_exists('t')) {
384 if(x($a->strings,$s))
385 return $a->strings[$s];
389 // curl wrapper. If binary flag is true, return binary
392 if(! function_exists('fetch_url')) {
393 function fetch_url($url,$binary = false, &$redirects = 0) {
397 $ch = curl_init($url);
398 if(($redirects > 8) || (! $ch))
401 curl_setopt($ch, CURLOPT_HEADER, true);
402 curl_setopt($ch, CURLOPT_RETURNTRANSFER,true);
405 $curl_time = intval(get_config('system','curl_timeout'));
406 curl_setopt($ch, CURLOPT_TIMEOUT, (($curl_time !== false) ? $curl_time : 60));
408 // by default we will allow self-signed certs
409 // but you can override this
411 $check_cert = get_config('system','verifyssl');
412 curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, (($check_cert) ? true : false));
414 $prx = get_config('system','proxy');
416 curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, 1);
417 curl_setopt($ch, CURLOPT_PROXY, $prx);
418 $prxusr = get_config('system','proxyuser');
420 curl_setopt($ch, CURLOPT_PROXYUSERPWD, $prxusr);
423 curl_setopt($ch, CURLOPT_BINARYTRANSFER,1);
425 $a->set_curl_code(0);
429 $http_code = intval(curl_getinfo($ch, CURLINFO_HTTP_CODE));
430 $header = substr($s,0,strpos($s,"\r\n\r\n"));
431 if(stristr($header,'100') && (strlen($header) < 30)) {
432 // 100 Continue has two headers, get the real one
433 $s = substr($s,strlen($header)+4);
434 $header = substr($s,0,strpos($s,"\r\n\r\n"));
436 if($http_code == 301 || $http_code == 302 || $http_code == 303) {
438 preg_match('/(Location:|URI:)(.*?)\n/', $header, $matches);
439 $url = trim(array_pop($matches));
440 $url_parsed = parse_url($url);
441 if (isset($url_parsed)) {
443 return fetch_url($url,$binary,$redirects);
446 $a->set_curl_code($http_code);
447 $body = substr($s,strlen($header)+4);
448 $a->set_curl_headers($header);
454 // post request to $url. $params is an array of post variables.
456 if(! function_exists('post_url')) {
457 function post_url($url,$params, $headers = null, &$redirects = 0) {
459 $ch = curl_init($url);
460 if(($redirects > 8) || (! $ch))
463 curl_setopt($ch, CURLOPT_HEADER, true);
464 curl_setopt($ch, CURLOPT_RETURNTRANSFER,true);
465 curl_setopt($ch, CURLOPT_POST,1);
466 curl_setopt($ch, CURLOPT_POSTFIELDS,$params);
468 $curl_time = intval(get_config('system','curl_timeout'));
469 curl_setopt($ch, CURLOPT_TIMEOUT, (($curl_time !== false) ? $curl_time : 60));
471 if(is_array($headers))
472 curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
474 $check_cert = get_config('system','verifyssl');
475 curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, (($check_cert) ? true : false));
476 $prx = get_config('system','proxy');
478 curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, 1);
479 curl_setopt($ch, CURLOPT_PROXY, $prx);
480 $prxusr = get_config('system','proxyuser');
482 curl_setopt($ch, CURLOPT_PROXYUSERPWD, $prxusr);
485 $a->set_curl_code(0);
489 $http_code = intval(curl_getinfo($ch, CURLINFO_HTTP_CODE));
490 $header = substr($s,0,strpos($s,"\r\n\r\n"));
491 if(stristr($header,'100') && (strlen($header) < 30)) {
492 // 100 Continue has two headers, get the real one
493 $s = substr($s,strlen($header)+4);
494 $header = substr($s,0,strpos($s,"\r\n\r\n"));
496 if($http_code == 301 || $http_code == 302 || $http_code == 303) {
498 preg_match('/(Location:|URI:)(.*?)\n/', $header, $matches);
499 $url = trim(array_pop($matches));
500 $url_parsed = parse_url($url);
501 if (isset($url_parsed)) {
503 return post_url($url,$binary,$headers,$redirects);
506 $a->set_curl_code($http_code);
507 $body = substr($s,strlen($header)+4);
508 $a->set_curl_headers($header);
514 // random hash, 64 chars
516 if(! function_exists('random_string')) {
517 function random_string() {
518 return(hash('sha256',uniqid(rand(),true)));
522 * This is our primary input filter.
524 * The high bit hack only involved some old IE browser, forget which (IE5/Mac?)
525 * that had an XSS attack vector due to stripping the high-bit on an 8-bit character
526 * after cleansing, and angle chars with the high bit set could get through as markup.
528 * This is now disabled because it was interfering with some legitimate unicode sequences
529 * and hopefully there aren't a lot of those browsers left.
531 * Use this on any text input where angle chars are not valid or permitted
532 * They will be replaced with safer brackets. This may be filtered further
533 * if these are not allowed either.
537 if(! function_exists('notags')) {
538 function notags($string) {
540 return(str_replace(array("<",">"), array('[',']'), $string));
542 // High-bit filter no longer used
543 // return(str_replace(array("<",">","\xBA","\xBC","\xBE"), array('[',']','','',''), $string));
546 // use this on "body" or "content" input where angle chars shouldn't be removed,
547 // and allow them to be safely displayed.
549 if(! function_exists('escape_tags')) {
550 function escape_tags($string) {
552 return(htmlspecialchars($string));
555 // wrapper for adding a login box. If $register == true provide a registration
556 // link. This will most always depend on the value of $a->config['register_policy'].
557 // returns the complete html for inserting into the page
559 if(! function_exists('login')) {
560 function login($register = false) {
562 $register_html = (($register) ? load_view_file("view/register-link.tpl") : "");
564 $noid = get_config('system','no_openid');
566 $classname = 'no-openid';
567 $namelabel = t('Nickname or Email address: ');
568 $passlabel = t('Password: ');
572 $classname = 'openid';
573 $namelabel = t('Nickname/Email/OpenID: ');
574 $passlabel = t("Password \x28if not OpenID\x29: ");
577 $lostpass = t('Forgot your password?');
578 $lostlink = t('Password Reset');
580 if(x($_SESSION,'authenticated')) {
581 $tpl = load_view_file("view/logout.tpl");
584 $tpl = load_view_file("view/login.tpl");
588 $o = replace_macros($tpl,array(
589 '$register_html' => $register_html,
590 '$classname' => $classname,
591 '$namelabel' => $namelabel,
592 '$passlabel' => $passlabel,
594 '$lostpass' => $lostpass,
595 '$lostlink' => $lostlink
601 // generate a string that's random, but usually pronounceable.
602 // used to generate initial passwords
604 if(! function_exists('autoname')) {
605 function autoname($len) {
607 $vowels = array('a','a','ai','au','e','e','e','ee','ea','i','ie','o','ou','u');
608 if(mt_rand(0,5) == 4)
626 's','sc','sh','sm','sp','st',
634 $midcons = array('ck','ct','gn','ld','lf','lm','lt','mb','mm', 'mn','mp',
635 'nd','ng','nk','nt','rn','rp','rt');
637 $noend = array('bl', 'br', 'cl','cr','dr','fl','fr','gl','gr',
638 'kh', 'kl','kr','mn','pl','pr','rh','tr','qu','wh');
640 $start = mt_rand(0,2);
648 for ($x = 0; $x < $len; $x ++) {
649 $r = mt_rand(0,count($table) - 1);
652 if($table == $vowels)
653 $table = array_merge($cons,$midcons);
659 $word = substr($word,0,$len);
661 foreach($noend as $noe) {
662 if((strlen($word) > 2) && (substr($word,-2) == $noe)) {
663 $word = substr($word,0,-1);
667 if(substr($word,-1) == 'q')
668 $word = substr($word,0,-1);
672 // Used to end the current process, after saving session state.
674 if(! function_exists('killme')) {
676 session_write_close();
680 // redirect to another URL and terminate this process.
682 if(! function_exists('goaway')) {
683 function goaway($s) {
684 header("Location: $s");
688 // Generic XML return
689 // Outputs a basic dfrn XML status structure to STDOUT, with a <status> variable
690 // of $st and an optional text <message> of $message and terminates the current process.
692 if(! function_exists('xml_status')) {
693 function xml_status($st, $message = '') {
695 $xml_message = ((strlen($message)) ? "\t<message>" . xmlify($message) . "</message>\r\n" : '');
698 logger('xml_status returning non_zero: ' . $st . " message=" . $message);
700 header( "Content-type: text/xml" );
701 echo '<?xml version="1.0" encoding="UTF-8"?>'."\r\n";
702 echo "<result>\r\n\t<status>$st</status>\r\n$xml_message</result>\r\n";
706 // Returns the uid of locally logged in user or false.
708 if(! function_exists('local_user')) {
709 function local_user() {
710 if((x($_SESSION,'authenticated')) && (x($_SESSION,'uid')))
711 return intval($_SESSION['uid']);
715 // Returns contact id of authenticated site visitor or false
717 if(! function_exists('remote_user')) {
718 function remote_user() {
719 if((x($_SESSION,'authenticated')) && (x($_SESSION,'visitor_id')))
720 return intval($_SESSION['visitor_id']);
724 // contents of $s are displayed prominently on the page the next time
725 // a page is loaded. Usually used for errors or alerts.
727 if(! function_exists('notice')) {
728 function notice($s) {
731 $_SESSION['sysmsg'] .= $s;
734 // wrapper around config to limit the text length of an incoming message
736 if(! function_exists('get_max_import_size')) {
737 function get_max_import_size() {
739 return ((x($a->config,'max_import_size')) ? $a->config['max_import_size'] : 0 );
743 // escape text ($str) for XML transport
744 // returns escaped text.
746 if(! function_exists('xmlify')) {
747 function xmlify($str) {
750 for($x = 0; $x < strlen($str); $x ++) {
781 $buffer = trim($buffer);
786 // pass xml escaped text ($s), returns unescaped text
788 if(! function_exists('unxmlify')) {
789 function unxmlify($s) {
790 $ret = str_replace('&','&', $s);
791 $ret = str_replace(array('<','>','"','''),array('<','>','"',"'"),$ret);
795 // convenience wrapper, reverse the operation "bin2hex"
797 if(! function_exists('hex2bin')) {
798 function hex2bin($s) {
799 return(pack("H*",$s));
802 // Automatic pagination.
803 // To use, get the count of total items.
804 // Then call $a->set_pager_total($number_items);
805 // Optionally call $a->set_pager_itemspage($n) to the number of items to display on each page
806 // Then call paginate($a) after the end of the display loop to insert the pager block on the page
807 // (assuming there are enough items to paginate).
808 // When using with SQL, the setting LIMIT %d, %d => $a->pager['start'],$a->pager['itemspage']
809 // will limit the results to the correct items for the current page.
810 // The actual page handling is then accomplished at the application layer.
812 if(! function_exists('paginate')) {
813 function paginate(&$a) {
815 $stripped = preg_replace('/(&page=[0-9]*)/','',$_SERVER['QUERY_STRING']);
816 $stripped = str_replace('q=','',$stripped);
817 $stripped = trim($stripped,'/');
818 $url = $a->get_baseurl() . '/' . $stripped;
821 if($a->pager['total'] > $a->pager['itemspage']) {
822 $o .= '<div class="pager">';
823 if($a->pager['page'] != 1)
824 $o .= '<span class="pager_prev">'."<a href=\"$url".'&page='.($a->pager['page'] - 1).'">' . t('prev') . '</a></span> ';
826 $o .= "<span class=\"pager_first\"><a href=\"$url"."&page=1\">" . t('first') . "</a></span> ";
828 $numpages = $a->pager['total'] / $a->pager['itemspage'];
831 $numstop = $numpages;
834 $numstart = (($pagenum > 7) ? ($pagenum - 7) : 1);
835 $numstop = (($pagenum > ($numpages - 7)) ? $numpages : ($numstart + 14));
838 for($i = $numstart; $i <= $numstop; $i++){
839 if($i == $a->pager['page'])
840 $o .= '<span class="pager_current">'.(($i < 10) ? ' '.$i : $i);
842 $o .= "<span class=\"pager_n\"><a href=\"$url"."&page=$i\">".(($i < 10) ? ' '.$i : $i)."</a>";
846 if(($a->pager['total'] % $a->pager['itemspage']) != 0) {
847 if($i == $a->pager['page'])
848 $o .= '<span class="pager_current">'.(($i < 10) ? ' '.$i : $i);
850 $o .= "<span class=\"pager_n\"><a href=\"$url"."&page=$i\">".(($i < 10) ? ' '.$i : $i)."</a>";
854 $lastpage = (($numpages > intval($numpages)) ? intval($numpages)+1 : $numpages);
855 $o .= "<span class=\"pager_last\"><a href=\"$url"."&page=$lastpage\">" . t('last') . "</a></span> ";
857 if(($a->pager['total'] - ($a->pager['itemspage'] * $a->pager['page'])) > 0)
858 $o .= '<span class="pager_next">'."<a href=\"$url"."&page=".($a->pager['page'] + 1).'">' . t('next') . '</a></span>';
859 $o .= '</div>'."\r\n";
864 // Turn user/group ACLs stored as angle bracketed text into arrays
866 if(! function_exists('expand_acl')) {
867 function expand_acl($s) {
868 // turn string array of angle-bracketed elements into numeric array
869 // e.g. "<1><2><3>" => array(1,2,3);
873 $t = str_replace('<','',$s);
874 $a = explode('>',$t);
877 $ret[] = intval($aa);
883 // Used to wrap ACL elements in angle brackets for storage
885 if(! function_exists('sanitise_acl')) {
886 function sanitise_acl(&$item) {
888 $item = '<' . intval(notags(trim($item))) . '>';
893 // retrieve a "family" of config variables from database to cached storage
895 if(! function_exists('load_config')) {
896 function load_config($family) {
898 $r = q("SELECT * FROM `config` WHERE `cat` = '%s'",
904 $a->config[$family][$k] = $rr['v'];
909 // get a particular config variable given the family name
910 // and key. Returns false if not set.
911 // $instore is only used by the set_config function
912 // to determine if the key already exists in the DB
913 // If a key is found in the DB but doesn't exist in
914 // local config cache, pull it into the cache so we don't have
915 // to hit the DB again for this item.
917 if(! function_exists('get_config')) {
918 function get_config($family, $key, $instore = false) {
923 if(isset($a->config[$family][$key])) {
924 if($a->config[$family][$key] === '!<unset>!') {
927 return $a->config[$family][$key];
930 $ret = q("SELECT `v` FROM `config` WHERE `cat` = '%s' AND `k` = '%s' LIMIT 1",
935 $a->config[$family][$key] = $ret[0]['v'];
939 $a->config[$family][$key] = '!<unset>!';
944 // Store a config value ($value) in the category ($family)
945 // under the key ($key)
946 // Return the value, or false if the database update failed
948 if(! function_exists('set_config')) {
949 function set_config($family,$key,$value) {
952 $a->config[$family][$key] = $value;
954 if(get_config($family,$key,true) === false) {
955 $ret = q("INSERT INTO `config` ( `cat`, `k`, `v` ) VALUES ( '%s', '%s', '%s' ) ",
964 $ret = q("UPDATE `config` SET `v` = '%s' WHERE `cat` = '%s' AND `k` = '%s' LIMIT 1",
974 // convert an XML document to a normalised, case-corrected array
977 if(! function_exists('convert_xml_element_to_array')) {
978 function convert_xml_element_to_array($xml_element, &$recursion_depth=0) {
980 // If we're getting too deep, bail out
981 if ($recursion_depth > 512) {
985 if (!is_string($xml_element) &&
986 !is_array($xml_element) &&
987 (get_class($xml_element) == 'SimpleXMLElement')) {
988 $xml_element_copy = $xml_element;
989 $xml_element = get_object_vars($xml_element);
992 if (is_array($xml_element)) {
993 $result_array = array();
994 if (count($xml_element) <= 0) {
995 return (trim(strval($xml_element_copy)));
998 foreach($xml_element as $key=>$value) {
1001 $result_array[strtolower($key)] =
1002 convert_xml_element_to_array($value, $recursion_depth);
1005 if ($recursion_depth == 0) {
1006 $temp_array = $result_array;
1007 $result_array = array(
1008 strtolower($xml_element_copy->getName()) => $temp_array,
1012 return ($result_array);
1015 return (trim(strval($xml_element)));
1019 // Given an email style address, perform webfinger lookup and
1020 // return the resulting DFRN profile URL, or if no DFRN profile URL
1021 // is located, returns an OStatus subscription template (prefixed
1022 // with the string 'stat:' to identify it as on OStatus template).
1023 // If this isn't an email style address just return $s.
1024 // Return an empty string if email-style addresses but webfinger fails,
1025 // or if the resultant personal XRD doesn't contain a supported
1026 // subscription/friend-request attribute.
1028 if(! function_exists('webfinger_dfrn')) {
1029 function webfinger_dfrn($s) {
1030 if(! strstr($s,'@')) {
1033 $links = webfinger($s);
1034 logger('webfinger_dfrn: ' . $s . ':' . print_r($links,true), LOGGER_DATA);
1036 foreach($links as $link)
1037 if($link['@attributes']['rel'] === NAMESPACE_DFRN)
1038 return $link['@attributes']['href'];
1039 foreach($links as $link)
1040 if($link['@attributes']['rel'] === NAMESPACE_OSTATUSSUB)
1041 return 'stat:' . $link['@attributes']['template'];
1046 // Given an email style address, perform webfinger lookup and
1047 // return the array of link attributes from the personal XRD file.
1048 // On error/failure return an empty array.
1051 if(! function_exists('webfinger')) {
1052 function webfinger($s) {
1054 if(strstr($s,'@')) {
1055 $host = substr($s,strpos($s,'@') + 1);
1058 $tpl = fetch_lrdd_template($host);
1059 logger('webfinger: lrdd template: ' . $tpl);
1061 $pxrd = str_replace('{uri}', urlencode('acct:'.$s), $tpl);
1062 $links = fetch_xrd_links($pxrd);
1063 if(! count($links)) {
1064 // try with double slashes
1065 $pxrd = str_replace('{uri}', urlencode('acct://'.$s), $tpl);
1066 $links = fetch_xrd_links($pxrd);
1074 if(! function_exists('lrdd')) {
1075 function lrdd($uri) {
1079 if(strstr($uri,'@')) {
1080 return(webfinger($uri));
1083 $html = fetch_url($uri);
1084 $headers = $a->get_curl_headers();
1085 $lines = explode("\n",$headers);
1087 foreach($lines as $line) {
1088 // TODO alter the following regex to support multiple relations (space separated)
1089 if((stristr($line,'link:')) && preg_match('/<([^>].*)>.*rel\=[\'\"]lrdd[\'\"]/',$line,$matches)) {
1090 $link = $matches[1];
1095 if(! isset($link)) {
1096 // parse the page of the supplied URL looking for rel links
1098 require_once('library/HTML5/Parser.php');
1099 $dom = HTML5_Parser::parse($html);
1102 $items = $dom->getElementsByTagName('link');
1104 foreach($items as $item) {
1105 $x = $item->getAttribute('rel');
1107 $link = $item->getAttribute('href');
1115 return(fetch_xrd_links($link));
1122 // Given a host name, locate the LRDD template from that
1123 // host. Returns the LRDD template or an empty string on
1126 if(! function_exists('fetch_lrdd_template')) {
1127 function fetch_lrdd_template($host) {
1129 $url = 'http://' . $host . '/.well-known/host-meta' ;
1130 $links = fetch_xrd_links($url);
1132 foreach($links as $link)
1133 if($link['@attributes']['rel'] && $link['@attributes']['rel'] === 'lrdd')
1134 $tpl = $link['@attributes']['template'];
1136 if(! strpos($tpl,'{uri}'))
1141 // Given a URL, retrieve the page as an XRD document.
1142 // Return an array of links.
1143 // on error/failure return empty array.
1145 if(! function_exists('fetch_xrd_links')) {
1146 function fetch_xrd_links($url) {
1149 $xml = fetch_url($url);
1153 logger('fetch_xrd_links: ' . $xml, LOGGER_DATA);
1154 $h = simplexml_load_string($xml);
1155 $arr = convert_xml_element_to_array($h);
1157 if(isset($arr['xrd']['link'])) {
1158 $link = $arr['xrd']['link'];
1159 if(! isset($link[0]))
1160 $links = array($link);
1168 // Convert an ACL array to a storable string
1170 if(! function_exists('perms2str')) {
1171 function perms2str($p) {
1174 if(is_array($tmp)) {
1175 array_walk($tmp,'sanitise_acl');
1176 $ret = implode('',$tmp);
1181 // generate a guaranteed unique (for this domain) item ID for ATOM
1182 // safe from birthday paradox
1184 if(! function_exists('item_new_uri')) {
1185 function item_new_uri($hostname,$uid) {
1189 $hash = random_string();
1191 $uri = "urn:X-dfrn:" . $hostname . ':' . $uid . ':' . $hash;
1193 $r = q("SELECT `id` FROM `item` WHERE `uri` = '%s' LIMIT 1",
1197 } while($dups == true);
1201 // Generate a guaranteed unique photo ID.
1202 // safe from birthday paradox
1204 if(! function_exists('photo_new_resource')) {
1205 function photo_new_resource() {
1209 $resource = hash('md5',uniqid(mt_rand(),true));
1210 $r = q("SELECT `id` FROM `photo` WHERE `resource-id` = '%s' LIMIT 1",
1215 } while($found == true);
1220 // Take a URL from the wild, prepend http:// if necessary
1221 // and check DNS to see if it's real
1222 // return true if it's OK, false if something is wrong with it
1224 if(! function_exists('validate_url')) {
1225 function validate_url(&$url) {
1226 if(substr($url,0,4) != 'http')
1227 $url = 'http://' . $url;
1228 $h = parse_url($url);
1230 if(($h) && (checkdnsrr($h['host'], 'ANY'))) {
1236 // checks that email is an actual resolvable internet address
1238 if(! function_exists('validate_email')) {
1239 function validate_email($addr) {
1241 if(! strpos($addr,'@'))
1243 $h = substr($addr,strpos($addr,'@') + 1);
1245 if(($h) && (checkdnsrr($h, 'ANY'))) {
1251 // Check $url against our list of allowed sites,
1252 // wildcards allowed. If allowed_sites is unset return true;
1253 // If url is allowed, return true.
1254 // otherwise, return false
1256 if(! function_exists('allowed_url')) {
1257 function allowed_url($url) {
1259 $h = parse_url($url);
1265 $str_allowed = get_config('system','allowed_sites');
1271 $host = strtolower($h['host']);
1273 // always allow our own site
1275 if($host == strtolower($_SERVER['SERVER_NAME']))
1278 $fnmatch = function_exists('fnmatch');
1279 $allowed = explode(',',$str_allowed);
1281 if(count($allowed)) {
1282 foreach($allowed as $a) {
1283 $pat = strtolower(trim($a));
1284 if(($fnmatch && fnmatch($pat,$host)) || ($pat == $host)) {
1293 // check if email address is allowed to register here.
1294 // Compare against our list (wildcards allowed).
1295 // Returns false if not allowed, true if allowed or if
1296 // allowed list is not configured.
1298 if(! function_exists('allowed_email')) {
1299 function allowed_email($email) {
1302 $domain = strtolower(substr($email,strpos($email,'@') + 1));
1306 $str_allowed = get_config('system','allowed_email');
1312 $fnmatch = function_exists('fnmatch');
1313 $allowed = explode(',',$str_allowed);
1315 if(count($allowed)) {
1316 foreach($allowed as $a) {
1317 $pat = strtolower(trim($a));
1318 if(($fnmatch && fnmatch($pat,$host)) || ($pat == $host)) {
1327 // Format the like/dislike text for a profile item
1328 // $cnt = number of people who like/dislike the item
1329 // $arr = array of pre-linked names of likers/dislikers
1330 // $type = one of 'like, 'dislike'
1332 // returns formatted text
1334 if(! function_exists('format_like')) {
1335 function format_like($cnt,$arr,$type,$id) {
1338 $o .= $arr[0] . (($type === 'like') ? t(' likes this.') : t(' doesn\'t like this.')) . EOL ;
1340 $o .= '<span class="fakelink" onclick="openClose(\'' . $type . 'list-' . $id . '\');" >'
1341 . $cnt . ' ' . t('people') . '</span> ' . (($type === 'like') ? t('like this.') : t('don\'t like this.')) . EOL ;
1342 $total = count($arr);
1343 if($total >= MAX_LIKERS)
1344 $arr = array_slice($arr, 0, MAX_LIKERS - 1);
1345 if($total < MAX_LIKERS)
1346 $arr[count($arr)-1] = t('and') . ' ' . $arr[count($arr)-1];
1347 $str = implode(', ', $arr);
1348 if($total >= MAX_LIKERS)
1349 $str .= t(', and ') . $total - MAX_LIKERS . t(' other people');
1350 $str .= (($type === 'like') ? t(' like this.') : t(' don\'t like this.'));
1351 $o .= "\t" . '<div id="' . $type . 'list-' . $id . '" style="display: none;" >' . $str . '</div>';
1357 // wrapper to load a view template, checking for alternate
1358 // languages before falling back to the default
1360 if(! function_exists('load_view_file')) {
1361 function load_view_file($s) {
1364 $lang = get_config('system','language');
1367 if(file_exists("$d/$lang/$b"))
1368 return file_get_contents("$d/$lang/$b");
1369 return file_get_contents($s);
1372 // for html,xml parsing - let's say you've got
1373 // an attribute foobar="class1 class2 class3"
1374 // and you want to find out if it contains 'class3'.
1375 // you can't use a normal sub string search because you
1376 // might match 'notclass3' and a regex to do the job is
1377 // possible but a bit complicated.
1378 // pass the attribute string as $attr and the attribute you
1379 // are looking for as $s - returns true if found, otherwise false
1381 if(! function_exists('attribute_contains')) {
1382 function attribute_contains($attr,$s) {
1383 $a = explode(' ', $attr);
1384 if(count($a) && in_array($s,$a))
1389 if(! function_exists('logger')) {
1390 function logger($msg,$level = 0) {
1392 $debugging = get_config('system','debugging');
1393 $loglevel = intval(get_config('system','loglevel'));
1394 $logfile = get_config('system','logfile');
1396 if((! $debugging) || (! $logfile) || ($level > $loglevel))
1399 @file_put_contents($logfile, datetime_convert() . ':' . session_id() . ' ' . $msg . "\n", FILE_APPEND);
1404 if(! function_exists('activity_match')) {
1405 function activity_match($haystack,$needle) {
1406 if(($haystack === $needle) || ((basename($needle) === $haystack) && strstr($needle,NAMESPACE_ACTIVITY_SCHEMA)))
1412 // Pull out all #hashtags and @person tags from $s;
1413 // We also get @person@domain.com - which would make
1414 // the regex quite complicated as tags can also
1415 // end a sentence. So we'll run through our results
1416 // and strip the period from any tags which end with one.
1417 // Returns array of tags found, or empty array.
1420 if(! function_exists('get_tags')) {
1421 function get_tags($s) {
1423 if(preg_match_all('/([@#][^ \x0D\x0A,:?]*)([ \x0D\x0A,:?]|$)/',$s,$match)) {
1424 foreach($match[1] as $match) {
1425 if(strstr($match,"]")) {
1426 // we might be inside a bbcode color tag - leave it alone
1429 if(substr($match,-1,1) === '.')
1430 $ret[] = substr($match,0,-1);
1440 // quick and dirty quoted_printable encoding
1442 if(! function_exists('qp')) {
1444 return str_replace ("%","=",rawurlencode($s));
1448 if(! function_exists('like_puller')) {
1449 function like_puller($a,$item,&$arr,$mode) {
1453 $verb = (($mode === 'like') ? ACTIVITY_LIKE : ACTIVITY_DISLIKE);
1455 if((activity_match($item['verb'],$verb)) && ($item['id'] != $item['parent'])) {
1456 $url = $item['author-link'];
1457 if(($item['network'] === 'dfrn') && (! $item['self']) && ($item['author-link'] == $item['url'])) {
1458 $url = $a->get_baseurl() . '/redir/' . $item['contact-id'];
1459 $sparkle = ' class="sparkle" ';
1461 if(! ((isset($arr[$item['parent'] . '-l'])) && (is_array($arr[$item['parent'] . '-l']))))
1462 $arr[$item['parent'] . '-l'] = array();
1463 if(! isset($arr[$item['parent']]))
1464 $arr[$item['parent']] = 1;
1466 $arr[$item['parent']] ++;
1467 $arr[$item['parent'] . '-l'][] = '<a href="'. $url . '"'. $sparkle .'>' . $item['author-name'] . '</a>';
1472 if(! function_exists('get_mentions')) {
1473 function get_mentions($item) {
1475 if(! strlen($item['tag']))
1478 $arr = explode(',',$item['tag']);
1479 foreach($arr as $x) {
1481 if(preg_match('/@\[url=([^\]]*)\]/',$x,$matches))
1482 $o .= "\t\t" . '<link rel="mentioned" href="' . $matches[1] . '" />' . "\r\n";
1487 if(! function_exists('contact_block')) {
1488 function contact_block() {
1491 if((! is_array($a->profile)) || ($a->profile['hide-friends']))
1493 $r = q("SELECT COUNT(*) AS `total` FROM `contact` WHERE `uid` = %d AND `self` = 0 AND `blocked` = 0 and `pending` = 0",
1494 intval($a->profile['uid'])
1497 $total = intval($r[0]['total']);
1500 $o .= '<h4 class="contact-h4">' . t('No contacts') . '</h4>';
1503 $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `self` = 0 AND `blocked` = 0 and `pending` = 0 ORDER BY RAND() LIMIT 24",
1504 intval($a->profile['uid'])
1507 $o .= '<h4 class="contact-h4">' . $total . ' ' . t('Contacts') . '</h4><div id="contact-block">';
1508 foreach($r as $rr) {
1509 $redirect_url = $a->get_baseurl() . '/redir/' . $rr['id'];
1510 if(local_user() && ($rr['uid'] == local_user())
1511 && ($rr['network'] === 'dfrn')) {
1512 $url = $redirect_url;
1513 $sparkle = ' sparkle';
1520 $o .= '<div class="contact-block-div"><a class="contact-block-link' . $sparkle . '" href="' . $url . '" ><img class="contact-block-img' . $sparkle . '" src="' . $rr['micro'] . '" title="' . $rr['name'] . ' [' . $rr['url'] . ']" alt="' . $rr['name'] . '" /></a></div>' . "\r\n";
1522 $o .= '</div><div id="contact-block-end"></div>';
1523 $o .= '<div id="viewcontacts"><a id="viewcontacts-link" href="viewcontacts/' . $a->profile['nickname'] . '">' . t('View Contacts') . '</a></div>';
1530 if(! function_exists('search')) {
1531 function search($s) {
1533 $o = '<div id="search-box">';
1534 $o .= '<form action="' . $a->get_baseurl() . '/search' . '" method="get" >';
1535 $o .= '<input type="text" name="search" id="search-text" value="' . $s .'" />';
1536 $o .= '<input type="submit" name="submit" id="search-submit" value="' . t('Search') . '" />';
1537 $o .= '</form></div>';
1541 if(! function_exists('valid_email')) {
1542 function valid_email($x){
1543 if(preg_match('/^[_a-zA-Z0-9-]+(\.[_a-zA-Z0-9-]+)*@[a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)+$/',$x))
1549 if(! function_exists('gravatar_img')) {
1550 function gravatar_img($email) {
1552 $opt = 'identicon'; // psuedo-random geometric pattern if not found
1554 $hash = md5(trim(strtolower($email)));
1556 $url = 'http://www.gravatar.com/avatar/' . $hash . '.jpg'
1557 . '?s=' . $size . '&d=' . $opt . '&r=' . $rating;
1559 logger('gravatar: ' . $email . ' ' . $url);
1563 if(! function_exists('aes_decrypt')) {
1564 function aes_decrypt($val,$ky)
1566 $key="\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
1567 for($a=0;$a<strlen($ky);$a++)
1568 $key[$a%16]=chr(ord($key[$a%16]) ^ ord($ky[$a]));
1569 $mode = MCRYPT_MODE_ECB;
1570 $enc = MCRYPT_RIJNDAEL_128;
1571 $dec = @mcrypt_decrypt($enc, $key, $val, $mode, @mcrypt_create_iv( @mcrypt_get_iv_size($enc, $mode), MCRYPT_DEV_URANDOM ) );
1572 return rtrim($dec,(( ord(substr($dec,strlen($dec)-1,1))>=0 and ord(substr($dec, strlen($dec)-1,1))<=16)? chr(ord( substr($dec,strlen($dec)-1,1))):null));
1576 if(! function_exists('aes_encrypt')) {
1577 function aes_encrypt($val,$ky)
1579 $key="\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
1580 for($a=0;$a<strlen($ky);$a++)
1581 $key[$a%16]=chr(ord($key[$a%16]) ^ ord($ky[$a]));
1582 $mode=MCRYPT_MODE_ECB;
1583 $enc=MCRYPT_RIJNDAEL_128;
1584 $val=str_pad($val, (16*(floor(strlen($val) / 16)+(strlen($val) % 16==0?2:1))), chr(16-(strlen($val) % 16)));
1585 return mcrypt_encrypt($enc, $key, $val, $mode, mcrypt_create_iv( mcrypt_get_iv_size($enc, $mode), MCRYPT_DEV_URANDOM));
1588 if(! function_exists('linkify')) {
1589 function linkify($s) {
1590 $s = preg_replace("/(https?\:\/\/[a-zA-Z0-9\:\/\-\?\&\.\=\_\~\#\'\%]*)/", ' <a href="$1" >$1</a>', $s);