683 lines
18 KiB
PHP
683 lines
18 KiB
PHP
<?php
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require_once('library/HTML5/Parser.php');
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require_once('include/crypto.php');
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if(! function_exists('scrape_dfrn')) {
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function scrape_dfrn($url) {
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$a = get_app();
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$ret = array();
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logger('scrape_dfrn: url=' . $url);
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$s = fetch_url($url);
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if(! $s)
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return $ret;
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$headers = $a->get_curl_headers();
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logger('scrape_dfrn: headers=' . $headers, LOGGER_DEBUG);
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$lines = explode("\n",$headers);
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if(count($lines)) {
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foreach($lines as $line) {
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// don't try and run feeds through the html5 parser
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if(stristr($line,'content-type:') && ((stristr($line,'application/atom+xml')) || (stristr($line,'application/rss+xml'))))
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return ret;
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}
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}
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$dom = HTML5_Parser::parse($s);
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if(! $dom)
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return $ret;
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$items = $dom->getElementsByTagName('link');
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// get DFRN link elements
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foreach($items as $item) {
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$x = $item->getAttribute('rel');
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if(($x === 'alternate') && ($item->getAttribute('type') === 'application/atom+xml'))
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$ret['feed_atom'] = $item->getAttribute('href');
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if(substr($x,0,5) == "dfrn-") {
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$ret[$x] = $item->getAttribute('href');
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}
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if($x === 'lrdd') {
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$decoded = urldecode($item->getAttribute('href'));
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if(preg_match('/acct:([^@]*)@/',$decoded,$matches))
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$ret['nick'] = $matches[1];
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}
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}
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// Pull out hCard profile elements
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$largest_photo = 0;
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$items = $dom->getElementsByTagName('*');
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foreach($items as $item) {
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if(attribute_contains($item->getAttribute('class'), 'vcard')) {
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$level2 = $item->getElementsByTagName('*');
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foreach($level2 as $x) {
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if(attribute_contains($x->getAttribute('class'),'fn')) {
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$ret['fn'] = $x->textContent;
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}
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if((attribute_contains($x->getAttribute('class'),'photo'))
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|| (attribute_contains($x->getAttribute('class'),'avatar'))) {
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$size = intval($x->getAttribute('width'));
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// dfrn prefers 175, so if we find this, we set largest_size so it can't be topped.
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if(($size > $largest_photo) || ($size == 175) || (! $largest_photo)) {
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$ret['photo'] = $x->getAttribute('src');
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$largest_photo = (($size == 175) ? 9999 : $size);
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}
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}
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if(attribute_contains($x->getAttribute('class'),'key')) {
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$ret['key'] = $x->textContent;
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}
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}
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}
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}
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return $ret;
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}}
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if(! function_exists('validate_dfrn')) {
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function validate_dfrn($a) {
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$errors = 0;
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if(! x($a,'key'))
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$errors ++;
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if(! x($a,'dfrn-request'))
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$errors ++;
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if(! x($a,'dfrn-confirm'))
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$errors ++;
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if(! x($a,'dfrn-notify'))
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$errors ++;
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if(! x($a,'dfrn-poll'))
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$errors ++;
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return $errors;
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}}
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if(! function_exists('scrape_meta')) {
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function scrape_meta($url) {
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$a = get_app();
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$ret = array();
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logger('scrape_meta: url=' . $url);
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$s = fetch_url($url);
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if(! $s)
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return $ret;
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$headers = $a->get_curl_headers();
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logger('scrape_meta: headers=' . $headers, LOGGER_DEBUG);
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$lines = explode("\n",$headers);
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if(count($lines)) {
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foreach($lines as $line) {
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// don't try and run feeds through the html5 parser
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if(stristr($line,'content-type:') && ((stristr($line,'application/atom+xml')) || (stristr($line,'application/rss+xml'))))
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return ret;
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}
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}
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$dom = HTML5_Parser::parse($s);
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if(! $dom)
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return $ret;
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$items = $dom->getElementsByTagName('meta');
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// get DFRN link elements
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foreach($items as $item) {
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$x = $item->getAttribute('name');
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if(substr($x,0,5) == "dfrn-")
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$ret[$x] = $item->getAttribute('content');
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}
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return $ret;
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}}
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if(! function_exists('scrape_vcard')) {
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function scrape_vcard($url) {
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$a = get_app();
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$ret = array();
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logger('scrape_vcard: url=' . $url);
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$s = fetch_url($url);
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if(! $s)
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return $ret;
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$headers = $a->get_curl_headers();
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$lines = explode("\n",$headers);
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if(count($lines)) {
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foreach($lines as $line) {
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// don't try and run feeds through the html5 parser
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if(stristr($line,'content-type:') && ((stristr($line,'application/atom+xml')) || (stristr($line,'application/rss+xml'))))
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return ret;
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}
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}
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$dom = HTML5_Parser::parse($s);
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if(! $dom)
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return $ret;
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// Pull out hCard profile elements
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$largest_photo = 0;
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$items = $dom->getElementsByTagName('*');
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foreach($items as $item) {
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if(attribute_contains($item->getAttribute('class'), 'vcard')) {
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$level2 = $item->getElementsByTagName('*');
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foreach($level2 as $x) {
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if(attribute_contains($x->getAttribute('class'),'fn'))
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$ret['fn'] = $x->textContent;
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if((attribute_contains($x->getAttribute('class'),'photo'))
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|| (attribute_contains($x->getAttribute('class'),'avatar'))) {
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$size = intval($x->getAttribute('width'));
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if(($size > $largest_photo) || (! $largest_photo)) {
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$ret['photo'] = $x->getAttribute('src');
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$largest_photo = $size;
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}
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}
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if((attribute_contains($x->getAttribute('class'),'nickname'))
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|| (attribute_contains($x->getAttribute('class'),'uid'))) {
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$ret['nick'] = $x->textContent;
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}
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}
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}
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}
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return $ret;
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}}
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if(! function_exists('scrape_feed')) {
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function scrape_feed($url) {
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$a = get_app();
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$ret = array();
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$s = fetch_url($url);
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if(! $s)
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return $ret;
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$headers = $a->get_curl_headers();
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logger('scrape_feed: headers=' . $headers, LOGGER_DEBUG);
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$lines = explode("\n",$headers);
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if(count($lines)) {
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foreach($lines as $line) {
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if(stristr($line,'content-type:')) {
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if(stristr($line,'application/atom+xml') || stristr($s,'<feed')) {
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$ret['feed_atom'] = $url;
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return $ret;
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}
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if(stristr($line,'application/rss+xml') || stristr($s,'<rss')) {
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$ret['feed_rss'] = $url;
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return $ret;
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}
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}
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}
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}
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$dom = HTML5_Parser::parse($s);
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if(! $dom)
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return $ret;
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$head = $dom->getElementsByTagName('base');
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if($head) {
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foreach($head as $head0) {
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$basename = $head0->getAttribute('href');
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break;
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}
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}
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if(! $basename)
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$basename = substr($url,0,strrpos($url,'/')) . '/';
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$items = $dom->getElementsByTagName('link');
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// get Atom/RSS link elements, take the first one of either.
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if($items) {
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foreach($items as $item) {
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$x = $item->getAttribute('rel');
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if(($x === 'alternate') && ($item->getAttribute('type') === 'application/atom+xml')) {
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if(! x($ret,'feed_atom'))
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$ret['feed_atom'] = $item->getAttribute('href');
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}
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if(($x === 'alternate') && ($item->getAttribute('type') === 'application/rss+xml')) {
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if(! x($ret,'feed_rss'))
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$ret['feed_rss'] = $item->getAttribute('href');
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}
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}
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}
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// Drupal and perhaps others only provide relative URL's. Turn them into absolute.
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if(x($ret,'feed_atom') && (! strstr($ret['feed_atom'],'://')))
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$ret['feed_atom'] = $basename . $ret['feed_atom'];
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if(x($ret,'feed_rss') && (! strstr($ret['feed_rss'],'://')))
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$ret['feed_rss'] = $basename . $ret['feed_rss'];
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return $ret;
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}}
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/**
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*
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* Probe a network address to discover what kind of protocols we need to communicate with it.
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*
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* Warning: this function is a bit touchy and there are some subtle dependencies within the logic flow.
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* Edit with care.
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*
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*/
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/**
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*
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* PROBE_DIASPORA has a bias towards returning Diaspora information
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* while PROBE_NORMAL has a bias towards dfrn/zot - in the case where
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* an address (such as a Friendika address) supports more than one type
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* of network.
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*
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*/
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define ( 'PROBE_NORMAL', 0);
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define ( 'PROBE_DIASPORA', 1);
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function probe_url($url, $mode = PROBE_NORMAL) {
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require_once('include/email.php');
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$result = array();
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if(! $url)
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return $result;
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$network = null;
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$diaspora = false;
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$diaspora_base = '';
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$diaspora_guid = '';
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$diaspora_key = '';
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$has_lrdd = false;
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$email_conversant = false;
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$twitter = ((strpos($url,'twitter.com') !== false) ? true : false);
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$at_addr = ((strpos($url,'@') !== false) ? true : false);
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if(! $twitter) {
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if(strpos($url,'mailto:') !== false && $at_addr) {
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$url = str_replace('mailto:','',$url);
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$links = array();
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}
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else
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$links = lrdd($url);
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if(count($links)) {
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$has_lrdd = true;
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logger('probe_url: found lrdd links: ' . print_r($links,true), LOGGER_DATA);
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foreach($links as $link) {
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if($link['@attributes']['rel'] === NAMESPACE_ZOT)
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$zot = unamp($link['@attributes']['href']);
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if($link['@attributes']['rel'] === NAMESPACE_DFRN)
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$dfrn = unamp($link['@attributes']['href']);
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if($link['@attributes']['rel'] === 'salmon')
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$notify = unamp($link['@attributes']['href']);
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if($link['@attributes']['rel'] === NAMESPACE_FEED)
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$poll = unamp($link['@attributes']['href']);
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if($link['@attributes']['rel'] === 'http://microformats.org/profile/hcard')
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$hcard = unamp($link['@attributes']['href']);
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if($link['@attributes']['rel'] === 'http://webfinger.net/rel/profile-page')
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$profile = unamp($link['@attributes']['href']);
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if($link['@attributes']['rel'] === 'http://joindiaspora.com/seed_location') {
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$diaspora_base = unamp($link['@attributes']['href']);
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$diaspora = true;
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}
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if($link['@attributes']['rel'] === 'http://joindiaspora.com/guid') {
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$diaspora_guid = unamp($link['@attributes']['href']);
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$diaspora = true;
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}
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if($link['@attributes']['rel'] === 'diaspora-public-key') {
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$diaspora_key = base64_decode(unamp($link['@attributes']['href']));
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$pubkey = rsatopem($diaspora_key);
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$diaspora = true;
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}
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}
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// Status.Net can have more than one profile URL. We need to match the profile URL
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// to a contact on incoming messages to prevent spam, and we won't know which one
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// to match. So in case of two, one of them is stored as an alias. Only store URL's
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// and not webfinger user@host aliases. If they've got more than two non-email style
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// aliases, let's hope we're lucky and get one that matches the feed author-uri because
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// otherwise we're screwed.
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foreach($links as $link) {
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if($link['@attributes']['rel'] === 'alias') {
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if(strpos($link['@attributes']['href'],'@') === false) {
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if(isset($profile)) {
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if($link['@attributes']['href'] !== $profile)
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$alias = unamp($link['@attributes']['href']);
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}
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else
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$profile = unamp($link['@attributes']['href']);
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}
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}
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}
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}
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elseif($mode == PROBE_NORMAL) {
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// Check email
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$orig_url = $url;
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if((strpos($orig_url,'@')) && validate_email($orig_url)) {
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$x = q("SELECT `prvkey` FROM `user` WHERE `uid` = %d LIMIT 1",
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intval(local_user())
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);
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$r = q("SELECT * FROM `mailacct` WHERE `uid` = %d AND `server` != '' LIMIT 1",
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intval(local_user())
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);
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if(count($x) && count($r)) {
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$mailbox = construct_mailbox_name($r[0]);
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$password = '';
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openssl_private_decrypt(hex2bin($r[0]['pass']),$password,$x[0]['prvkey']);
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$mbox = email_connect($mailbox,$r[0]['user'],$password);
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unset($password);
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}
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if($mbox) {
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$msgs = email_poll($mbox,$orig_url);
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if(count($msgs)) {
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$addr = $orig_url;
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$network = NETWORK_MAIL;
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$name = substr($url,0,strpos($url,'@'));
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$phost = substr($url,strpos($url,'@')+1);
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$profile = 'http://' . $phost;
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// fix nick character range
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$vcard = array('fn' => $name, 'nick' => $name, 'photo' => gravatar_img($url));
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$notify = 'smtp ' . random_string();
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$poll = 'email ' . random_string();
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$priority = 0;
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$x = email_msg_meta($mbox,$msgs[0]);
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if(stristr($x->from,$orig_url))
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$adr = imap_rfc822_parse_adrlist($x->from,'');
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elseif(stristr($x->to,$orig_url))
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$adr = imap_rfc822_parse_adrlist($x->to,'');
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if(isset($adr)) {
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foreach($adr as $feadr) {
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if((strcasecmp($feadr->mailbox,$name) == 0)
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&&(strcasecmp($feadr->host,$phost) == 0)
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&& (strlen($feadr->personal))) {
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$vcard['fn'] = notags($feadr->personal);
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}
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}
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}
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}
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imap_close($mbox);
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}
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}
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}
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}
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if($mode == PROBE_NORMAL) {
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if(strlen($zot)) {
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$s = fetch_url($zot);
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if($s) {
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$j = json_decode($s);
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if($j) {
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$network = NETWORK_ZOT;
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$vcard = array(
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'fn' => $j->fullname,
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'nick' => $j->nickname,
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'photo' => $j->photo
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);
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$profile = $j->url;
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$notify = $j->post;
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$pubkey = $j->pubkey;
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$poll = 'N/A';
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}
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}
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}
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if(strlen($dfrn)) {
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$ret = scrape_dfrn(($hcard) ? $hcard : $dfrn);
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if(is_array($ret) && x($ret,'dfrn-request')) {
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$network = NETWORK_DFRN;
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$request = $ret['dfrn-request'];
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$confirm = $ret['dfrn-confirm'];
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$notify = $ret['dfrn-notify'];
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$poll = $ret['dfrn-poll'];
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$vcard = array();
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$vcard['fn'] = $ret['fn'];
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$vcard['nick'] = $ret['nick'];
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$vcard['photo'] = $ret['photo'];
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}
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}
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}
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if($diaspora && $diaspora_base && $diaspora_guid) {
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if($mode == PROBE_DIASPORA || ! $notify) {
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$notify = $diaspora_base . 'receive/users/' . $diaspora_guid;
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$batch = $diaspora_base . 'receive/public' ;
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}
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if(strpos($url,'@'))
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$addr = str_replace('acct:', '', $url);
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}
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if($network !== NETWORK_ZOT && $network !== NETWORK_DFRN && $network !== NETWORK_MAIL) {
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if($diaspora)
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$network = NETWORK_DIASPORA;
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elseif($has_lrdd)
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$network = NETWORK_OSTATUS;
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$priority = 0;
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if($hcard && ! $vcard) {
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$vcard = scrape_vcard($hcard);
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// Google doesn't use absolute url in profile photos
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if((x($vcard,'photo')) && substr($vcard['photo'],0,1) == '/') {
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$h = @parse_url($hcard);
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if($h)
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$vcard['photo'] = $h['scheme'] . '://' . $h['host'] . $vcard['photo'];
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}
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logger('probe_url: scrape_vcard: ' . print_r($vcard,true), LOGGER_DATA);
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}
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if($twitter) {
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logger('twitter: setup');
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$tid = basename($url);
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$tapi = 'https://api.twitter.com/1/statuses/user_timeline.rss';
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if(intval($tid))
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$poll = $tapi . '?user_id=' . $tid;
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else
|
|
$poll = $tapi . '?screen_name=' . $tid;
|
|
$profile = 'http://twitter.com/#!/' . $tid;
|
|
$vcard['photo'] = 'https://api.twitter.com/1/users/profile_image/' . $tid;
|
|
$vcard['nick'] = $tid;
|
|
$vcard['fn'] = $tid . '@twitter';
|
|
}
|
|
|
|
if(! x($vcard,'fn'))
|
|
if(x($vcard,'nick'))
|
|
$vcard['fn'] = $vcard['nick'];
|
|
|
|
$check_feed = false;
|
|
|
|
if($twitter || ! $poll)
|
|
$check_feed = true;
|
|
if((! isset($vcard)) || (! $profile))
|
|
$check_feed = true;
|
|
if(($at_addr) && (! count($links)))
|
|
$check_feed = false;
|
|
|
|
if($check_feed) {
|
|
|
|
$feedret = scrape_feed(($poll) ? $poll : $url);
|
|
logger('probe_url: scrape_feed returns: ' . print_r($feedret,true), LOGGER_DATA);
|
|
if(count($feedret) && ($feedret['feed_atom'] || $feedret['feed_rss'])) {
|
|
$poll = ((x($feedret,'feed_atom')) ? unamp($feedret['feed_atom']) : unamp($feedret['feed_rss']));
|
|
if(! x($vcard))
|
|
$vcard = array();
|
|
}
|
|
|
|
if(x($feedret,'photo') && (! x($vcard,'photo')))
|
|
$vcard['photo'] = $feedret['photo'];
|
|
require_once('library/simplepie/simplepie.inc');
|
|
$feed = new SimplePie();
|
|
$xml = fetch_url($poll);
|
|
|
|
logger('probe_url: fetch feed: ' . $poll . ' returns: ' . $xml, LOGGER_DATA);
|
|
$a = get_app();
|
|
|
|
logger('probe_url: scrape_feed: headers: ' . $a->get_curl_headers(), $LOGGER_DATA);
|
|
|
|
$feed->set_raw_data($xml);
|
|
|
|
$feed->init();
|
|
if($feed->error())
|
|
logger('probe_url: scrape_feed: Error parsing XML: ' . $feed->error());
|
|
|
|
|
|
if(! x($vcard,'photo'))
|
|
$vcard['photo'] = $feed->get_image_url();
|
|
$author = $feed->get_author();
|
|
|
|
if($author) {
|
|
$vcard['fn'] = unxmlify(trim($author->get_name()));
|
|
if(! $vcard['fn'])
|
|
$vcard['fn'] = trim(unxmlify($author->get_email()));
|
|
if(strpos($vcard['fn'],'@') !== false)
|
|
$vcard['fn'] = substr($vcard['fn'],0,strpos($vcard['fn'],'@'));
|
|
$email = unxmlify($author->get_email());
|
|
if(! $profile && $author->get_link())
|
|
$profile = trim(unxmlify($author->get_link()));
|
|
if(! $vcard['photo']) {
|
|
$rawtags = $feed->get_feed_tags( SIMPLEPIE_NAMESPACE_ATOM_10, 'author');
|
|
if($rawtags) {
|
|
$elems = $rawtags[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10];
|
|
if((x($elems,'link')) && ($elems['link'][0]['attribs']['']['rel'] === 'photo'))
|
|
$vcard['photo'] = $elems['link'][0]['attribs']['']['href'];
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
$item = $feed->get_item(0);
|
|
if($item) {
|
|
$author = $item->get_author();
|
|
if($author) {
|
|
$vcard['fn'] = trim(unxmlify($author->get_name()));
|
|
if(! $vcard['fn'])
|
|
$vcard['fn'] = trim(unxmlify($author->get_email()));
|
|
if(strpos($vcard['fn'],'@') !== false)
|
|
$vcard['fn'] = substr($vcard['fn'],0,strpos($vcard['fn'],'@'));
|
|
$email = unxmlify($author->get_email());
|
|
if(! $profile && $author->get_link())
|
|
$profile = trim(unxmlify($author->get_link()));
|
|
}
|
|
if(! $vcard['photo']) {
|
|
$rawmedia = $item->get_item_tags('http://search.yahoo.com/mrss/','thumbnail');
|
|
if($rawmedia && $rawmedia[0]['attribs']['']['url'])
|
|
$vcard['photo'] = unxmlify($rawmedia[0]['attribs']['']['url']);
|
|
}
|
|
if(! $vcard['photo']) {
|
|
$rawtags = $item->get_item_tags( SIMPLEPIE_NAMESPACE_ATOM_10, 'author');
|
|
if($rawtags) {
|
|
$elems = $rawtags[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10];
|
|
if((x($elems,'link')) && ($elems['link'][0]['attribs']['']['rel'] === 'photo'))
|
|
$vcard['photo'] = $elems['link'][0]['attribs']['']['href'];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if((! $vcard['photo']) && strlen($email))
|
|
$vcard['photo'] = gravatar_img($email);
|
|
if($poll === $profile)
|
|
$lnk = $feed->get_permalink();
|
|
if(isset($lnk) && strlen($lnk))
|
|
$profile = $lnk;
|
|
|
|
if(! (x($vcard,'fn')))
|
|
$vcard['fn'] = notags($feed->get_title());
|
|
if(! (x($vcard,'fn')))
|
|
$vcard['fn'] = notags($feed->get_description());
|
|
|
|
if(strpos($vcard['fn'],'Twitter / ') !== false) {
|
|
$vcard['fn'] = substr($vcard['fn'],strpos($vcard['fn'],'/')+1);
|
|
$vcard['fn'] = trim($vcard['fn']);
|
|
}
|
|
if(! x($vcard,'nick')) {
|
|
$vcard['nick'] = strtolower(notags(unxmlify($vcard['fn'])));
|
|
if(strpos($vcard['nick'],' '))
|
|
$vcard['nick'] = trim(substr($vcard['nick'],0,strpos($vcard['nick'],' ')));
|
|
}
|
|
if(! $network)
|
|
$network = NETWORK_FEED;
|
|
if(! $priority)
|
|
$priority = 2;
|
|
}
|
|
}
|
|
|
|
if(! x($vcard,'photo')) {
|
|
$a = get_app();
|
|
$vcard['photo'] = $a->get_baseurl() . '/images/default-profile.jpg' ;
|
|
}
|
|
|
|
if(! $profile)
|
|
$profile = $url;
|
|
|
|
// No human could be associated with this link, use the URL as the contact name
|
|
|
|
if(($network === NETWORK_FEED) && ($poll) && (! x($vcard,'fn')))
|
|
$vcard['fn'] = $url;
|
|
|
|
$vcard['fn'] = notags($vcard['fn']);
|
|
$vcard['nick'] = str_replace(' ','',notags($vcard['nick']));
|
|
|
|
$result['name'] = $vcard['fn'];
|
|
$result['nick'] = $vcard['nick'];
|
|
$result['url'] = $profile;
|
|
$result['addr'] = $addr;
|
|
$result['batch'] = $batch;
|
|
$result['notify'] = $notify;
|
|
$result['poll'] = $poll;
|
|
$result['request'] = $request;
|
|
$result['confirm'] = $confirm;
|
|
$result['photo'] = $vcard['photo'];
|
|
$result['priority'] = $priority;
|
|
$result['network'] = $network;
|
|
$result['alias'] = $alias;
|
|
$result['pubkey'] = $pubkey;
|
|
|
|
logger('probe_url: ' . print_r($result,true), LOGGER_DEBUG);
|
|
|
|
return $result;
|
|
}
|