+
+if(! function_exists('convert_xml_element_to_array')) {
+function convert_xml_element_to_array($xml_element, &$recursion_depth=0) {
+
+ // If we're getting too deep, bail out
+ if ($recursion_depth > 512) {
+ return(null);
+ }
+
+ if (!is_string($xml_element) &&
+ !is_array($xml_element) &&
+ (get_class($xml_element) == 'SimpleXMLElement')) {
+ $xml_element_copy = $xml_element;
+ $xml_element = get_object_vars($xml_element);
+ }
+
+ if (is_array($xml_element)) {
+ $result_array = array();
+ if (count($xml_element) <= 0) {
+ return (trim(strval($xml_element_copy)));
+ }
+
+ foreach($xml_element as $key=>$value) {
+
+ $recursion_depth++;
+ $result_array[strtolower($key)] =
+ convert_xml_element_to_array($value, $recursion_depth);
+ $recursion_depth--;
+ }
+ if ($recursion_depth == 0) {
+ $temp_array = $result_array;
+ $result_array = array(
+ strtolower($xml_element_copy->getName()) => $temp_array,
+ );
+ }
+
+ return ($result_array);
+
+ } else {
+ return (trim(strval($xml_element)));
+ }
+}}
+
+
+if(! function_exists('webfinger')) {
+function webfinger($s) {
+ if(! strstr($s,'@')) {
+ return $s;
+ }
+ $host = substr($s,strpos($s,'@') + 1);
+ $url = 'http://' . $host . '/.well-known/host-meta' ;
+ $xml = fetch_url($url);
+ if (! $xml)
+ return '';
+ $h = simplexml_load_string($xml);
+ $arr = convert_xml_element_to_array($h);
+
+ if(! isset($arr['xrd']['link']))
+ return '';
+
+ $link = $arr['xrd']['link'];
+ if(! isset($link[0]))
+ $links = array($link);
+ else
+ $links = $link;
+
+ foreach($links as $link)
+ if($link['@attributes']['rel'] && $link['@attributes']['rel'] == 'lrdd')
+ $tpl = $link['@attributes']['template'];
+ if((empty($tpl)) || (! strpos($tpl, '{uri}')))
+ return '';
+
+ $pxrd = str_replace('{uri}', urlencode('acct://'.$s), $tpl);
+
+ $xml = fetch_url($pxrd);
+ if (! $xml)
+ return '';
+ $h = simplexml_load_string($xml);
+ $arr = convert_xml_element_to_array($h);
+
+ if(! isset($arr['xrd']['link']))
+ return '';
+
+ $link = $arr['xrd']['link'];
+ if(! isset($link[0]))
+ $links = array($link);
+ else
+ $links = $link;
+
+ foreach($links as $link)
+ if($link['@attributes']['rel'] == NAMESPACE_DFRN)
+ return $link['@attributes']['href'];
+ return '';
+}}
+
+if(! function_exists('perms2str')) {
+function perms2str($p) {
+ $ret = '';
+ $tmp = $p;
+ if(is_array($tmp)) {
+ array_walk($tmp,'sanitise_acl');
+ $ret = implode('',$tmp);
+ }
+ return $ret;
+}}
+
+if(! function_exists('item_new_uri')) {
+function item_new_uri($hostname,$uid) {
+
+ do {
+ $dups = false;
+ $hash = random_string();
+
+ $uri = "urn:X-dfrn:" . $hostname . ':' . $uid . ':' . $hash;
+
+ $r = q("SELECT `id` FROM `item` WHERE `uri` = '%s' LIMIT 1",
+ dbesc($uri));
+ if(count($r))
+ $dups = true;
+ } while($dups == true);
+ return $uri;
+}}
+
+if(! function_exists('photo_new_resource')) {
+function photo_new_resource() {
+
+ do {
+ $found = false;
+ $resource = hash('md5',uniqid(mt_rand(),true));
+ $r = q("SELECT `id` FROM `photo` WHERE `resource-id` = '%s' LIMIT 1",
+ dbesc($resource)
+ );
+ if(count($r))
+ $found = true;
+ } while($found == true);
+ return $resource;
+}}
+
+
+
+if(! function_exists('get_uid')) {
+function get_uid() {
+ return ((x($_SESSION,'uid')) ? intval($_SESSION['uid']) : 0) ;
+}}
+
+if(! function_exists('validate_url')) {
+function validate_url(&$url) {
+ if(substr($url,0,4) != 'http')
+ $url = 'http://' . $url;
+ $h = parse_url($url);
+
+ if(! $h) {
+ return false;
+ }
+ if(! checkdnsrr($h['host'], 'ANY')) {
+ return false;
+ }
+ return true;
+}}
+
+if(! function_exists('allowed_url')) {
+function allowed_url($url) {
+
+ $h = parse_url($url);
+
+ if(! $h) {
+ return false;
+ }
+
+ $str_allowed = get_config('system','allowed_sites');
+ if(! $str_allowed)
+ return true;
+
+ $found = false;
+
+ $host = strtolower($h['host']);
+
+ // always allow our own site
+
+ if($host == strtolower($_SERVER['SERVER_NAME']))
+ return true;
+
+ $fnmatch = function_exists('fnmatch');
+ $allowed = explode(',',$str_allowed);
+
+ if(count($allowed)) {
+ foreach($allowed as $a) {
+ $pat = strtolower(trim($a));
+ if(($fnmatch && fnmatch($pat,$host)) || ($pat == $host)) {
+ $found = true;
+ break;
+ }
+ }
+ }
+ return $found;
+}}
+
+if(! function_exists('format_like')) {
+function format_like($cnt,$arr,$type,$id) {
+ if($cnt == 1)
+ $o .= $arr[0] . (($type == 'like') ? t(' likes this.') : t(' doesn\'t like this.')) . EOL ;
+ else {
+ $o .= '<span class="fakelink" onclick="openClose(\'' . $type . 'list-' . $id . '\');" >'
+ . $cnt . ' ' . t('people') . '</span> ' . (($type == 'like') ? t('like this.') : t('don\'t like this.')) . EOL ;
+ $total = count($arr);
+ if($total >= 75)
+ $arr = array_slice($arr,0,74);
+ if($total < 75)
+ $arr[count($arr)-1] = t('and') . ' ' . $arr[count($arr)-1];
+ $str = implode(', ', $arr);
+ if($total >= 75)
+ $str .= t(', and ') . $total - 75 . t(' other people');
+ $str .= (($type == 'like') ? t(' like this.') : t(' don\'t like this.'));
+ $o .= '<div id="' . $type . 'list-' . $id . '" style="display: none;" >' . $str . '</div>';
+ }
+ return $o;
+}}
+