Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
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<?php
require_once('library/HTML5/Parser.php');
if(! function_exists('scrape_dfrn')) {
function scrape_dfrn($url) {
$a = get_app();
$ret = array();
logger('scrape_dfrn: url=' . $url);
$s = fetch_url($url);
if(! $s)
return $ret;
$headers = $a->get_curl_headers();
logger('scrape_dfrn: headers=' . $headers, LOGGER_DEBUG);
$lines = explode("\n",$headers);
if(count($lines)) {
foreach($lines as $line) {
// don't try and run feeds through the html5 parser
if(stristr($line,'content-type:') && ((stristr($line,'application/atom+xml')) || (stristr($line,'application/rss+xml'))))
return ret;
}
}
$dom = HTML5_Parser::parse($s);
if(! $dom)
return $ret;
$items = $dom->getElementsByTagName('link');
// get DFRN link elements
foreach($items as $item) {
$x = $item->getAttribute('rel');
if(($x === 'alternate') && ($item->getAttribute('type') === 'application/atom+xml'))
$ret['feed_atom'] = $item->getAttribute('href');
if(substr($x,0,5) == "dfrn-")
$ret[$x] = $item->getAttribute('href');
if($x === 'lrdd') {
$decoded = urldecode($item->getAttribute('href'));
if(preg_match('/acct:([^@]*)@/',$decoded,$matches))
$ret['nick'] = $matches[1];
}
}
// Pull out hCard profile elements
$items = $dom->getElementsByTagName('*');
foreach($items as $item) {
if(attribute_contains($item->getAttribute('class'), 'vcard')) {
$level2 = $item->getElementsByTagName('*');
foreach($level2 as $x) {
if(attribute_contains($x->getAttribute('class'),'fn'))
$ret['fn'] = $x->textContent;
if(attribute_contains($x->getAttribute('class'),'photo'))
$ret['photo'] = $x->getAttribute('src');
if(attribute_contains($x->getAttribute('class'),'key'))
$ret['key'] = $x->textContent;
}
}
}
return $ret;
}}
if(! function_exists('validate_dfrn')) {
function validate_dfrn($a) {
$errors = 0;
if(! x($a,'key'))
$errors ++;
if(! x($a,'dfrn-request'))
$errors ++;
if(! x($a,'dfrn-confirm'))
$errors ++;
if(! x($a,'dfrn-notify'))
$errors ++;
if(! x($a,'dfrn-poll'))
$errors ++;
return $errors;
}}
if(! function_exists('scrape_meta')) {
function scrape_meta($url) {
$a = get_app();
$ret = array();
logger('scrape_meta: url=' . $url);
$s = fetch_url($url);
if(! $s)
return $ret;
$headers = $a->get_curl_headers();
logger('scrape_meta: headers=' . $headers, LOGGER_DEBUG);
$lines = explode("\n",$headers);
if(count($lines)) {
foreach($lines as $line) {
// don't try and run feeds through the html5 parser
if(stristr($line,'content-type:') && ((stristr($line,'application/atom+xml')) || (stristr($line,'application/rss+xml'))))
return ret;
}
}
$dom = HTML5_Parser::parse($s);
if(! $dom)
return $ret;
$items = $dom->getElementsByTagName('meta');
// get DFRN link elements
foreach($items as $item) {
$x = $item->getAttribute('name');
if(substr($x,0,5) == "dfrn-")
$ret[$x] = $item->getAttribute('content');
}
return $ret;
}}
if(! function_exists('scrape_vcard')) {
function scrape_vcard($url) {
$a = get_app();
$ret = array();
logger('scrape_vcard: url=' . $url);
$s = fetch_url($url);
if(! $s)
return $ret;
$headers = $a->get_curl_headers();
$lines = explode("\n",$headers);
if(count($lines)) {
foreach($lines as $line) {
// don't try and run feeds through the html5 parser
if(stristr($line,'content-type:') && ((stristr($line,'application/atom+xml')) || (stristr($line,'application/rss+xml'))))
return ret;
}
}
$dom = HTML5_Parser::parse($s);
if(! $dom)
return $ret;
// Pull out hCard profile elements
$items = $dom->getElementsByTagName('*');
foreach($items as $item) {
if(attribute_contains($item->getAttribute('class'), 'vcard')) {
$level2 = $item->getElementsByTagName('*');
foreach($level2 as $x) {
if(attribute_contains($x->getAttribute('class'),'fn'))
$ret['fn'] = $x->textContent;
if((attribute_contains($x->getAttribute('class'),'photo'))
|| (attribute_contains($x->getAttribute('class'),'avatar')))
$ret['photo'] = $x->getAttribute('src');
if((attribute_contains($x->getAttribute('class'),'nickname'))
|| (attribute_contains($x->getAttribute('class'),'uid')))
$ret['nick'] = $x->textContent;
}
}
}
return $ret;
}}
if(! function_exists('scrape_feed')) {
function scrape_feed($url) {
$a = get_app();
$ret = array();
$s = fetch_url($url);
if(! $s)
return $ret;
$headers = $a->get_curl_headers();
logger('scrape_feed: headers=' . $headers, LOGGER_DEBUG);
$lines = explode("\n",$headers);
if(count($lines)) {
foreach($lines as $line) {
if(stristr($line,'content-type:')) {
if(stristr($line,'application/atom+xml') || stristr($s,'<feed')) {
$ret['feed_atom'] = $url;
return $ret;
}
if(stristr($line,'application/rss+xml') || stristr($s,'<rss')) {
$ret['feed_rss'] = $url;
return $ret;
}
}
}
}
$dom = HTML5_Parser::parse($s);
if(! $dom)
return $ret;
$items = $dom->getElementsByTagName('img');
// get img elements (twitter)
if($items) {
foreach($items as $item) {
$x = $item->getAttribute('id');
if($x === 'profile-image') {
$ret['photo'] = $item->getAttribute('src');
}
}
}
$items = $dom->getElementsByTagName('link');
// get Atom/RSS link elements, take the first one of either.
if($items) {
foreach($items as $item) {
$x = $item->getAttribute('rel');
if(($x === 'alternate') && ($item->getAttribute('type') === 'application/atom+xml')) {
if(! x($ret,'feed_atom'))
$ret['feed_atom'] = $item->getAttribute('href');
}
if(($x === 'alternate') && ($item->getAttribute('type') === 'application/rss+xml')) {
if(! x($ret,'feed_rss'))
$ret['feed_rss'] = $item->getAttribute('href');
}
}
}
return $ret;
}}
function probe_url($url) {
$result = array();
if(! $url)
return $result;
$diaspora = false;
$email_conversant = false;
if($url) {
$links = lrdd($url);
if(count($links)) {
foreach($links as $link) {
if($link['@attributes']['rel'] === NAMESPACE_DFRN)
$dfrn = unamp($link['@attributes']['href']);
if($link['@attributes']['rel'] === 'salmon')
$notify = unamp($link['@attributes']['href']);
if($link['@attributes']['rel'] === NAMESPACE_FEED)
$poll = unamp($link['@attributes']['href']);
if($link['@attributes']['rel'] === 'http://microformats.org/profile/hcard')
$hcard = unamp($link['@attributes']['href']);
if($link['@attributes']['rel'] === 'http://webfinger.net/rel/profile-page')
$profile = unamp($link['@attributes']['href']);
if($link['@attributes']['rel'] === 'http://joindiaspora.com/seed_location')
$diaspora = true;
}
// Status.Net can have more than one profile URL. We need to match the profile URL
// to a contact on incoming messages to prevent spam, and we won't know which one
// to match. So in case of two, one of them is stored as an alias. Only store URL's
// and not webfinger user@host aliases. If they've got more than two non-email style
// aliases, let's hope we're lucky and get one that matches the feed author-uri because
// otherwise we're screwed.
foreach($links as $link) {
if($link['@attributes']['rel'] === 'alias') {
if(strpos($link['@attributes']['href'],'@') === false) {
if(isset($profile)) {
if($link['@attributes']['href'] !== $profile)
$alias = unamp($link['@attributes']['href']);
}
else
$profile = unamp($link['@attributes']['href']);
}
}
}
}
else {
if((strpos($orig_url,'@')) && validate_email($orig_url)) {
$email_conversant = true;
}
}
}
if(strlen($dfrn)) {
$ret = scrape_dfrn($dfrn);
if(is_array($ret) && x($ret,'dfrn-request')) {
$network = NETWORK_DFRN;
$request = $ret['dfrn-request'];
$confirm = $ret['dfrn-confirm'];
$notify = $ret['dfrn-notify'];
$poll = $ret['dfrn-poll'];
}
}
if($network !== NETWORK_DFRN) {
$network = NETWORK_OSTATUS;
$priority = 0;
if($hcard) {
$vcard = scrape_vcard($hcard);
// Google doesn't use absolute url in profile photos
if((x($vcard,'photo')) && substr($vcard['photo'],0,1) == '/') {
$h = @parse_url($hcard);
if($h)
$vcard['photo'] = $h['scheme'] . '://' . $h['host'] . $vcard['photo'];
}
logger('probe_url: scrape_vcard: ' . print_r($vcard,true), LOGGER_DATA);
}
if(! $profile) {
if($diaspora)
$profile = $hcard;
else
$profile = $url;
}
if(! x($vcard,'fn'))
if(x($vcard,'nick'))
$vcard['fn'] = $vcard['nick'];
if((! isset($vcard)) && (! $poll)) {
$ret = scrape_feed($url);
logger('probe_url: scrape_feed returns: ' . print_r($ret,true), LOGGER_DATA);
if(count($ret) && ($ret['feed_atom'] || $ret['feed_rss'])) {
$poll = ((x($ret,'feed_atom')) ? unamp($ret['feed_atom']) : unamp($ret['feed_rss']));
$vcard = array();
if(x($ret,'photo'))
$vcard['photo'] = $ret['photo'];
require_once('simplepie/simplepie.inc');
$feed = new SimplePie();
$xml = fetch_url($poll);
$feed->set_raw_data($xml);
$feed->init();
if(! x($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'],'@'));
$vcard['nick'] = strtolower(notags(unxmlify($vcard['fn'])));
if(strpos($vcard['nick'],' '))
$vcard['nick'] = trim(substr($vcard['nick'],0,strpos($vcard['nick'],' ')));
$email = unxmlify($author->get_email());
}
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'],'@'));
$vcard['nick'] = strtolower(unxmlify($vcard['fn']));
if(strpos($vcard['nick'],' '))
$vcard['nick'] = trim(substr($vcard['nick'],0,strpos($vcard['nick'],' ')));
$email = unxmlify($author->get_email());
}
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((! $vcard['photo']) && strlen($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());
$network = 'feed';
$priority = 2;
}
}
}
if(! x($vcard,'photo')) {
$a = get_app();
$vcard['photo'] = $a->get_baseurl() . '/images/default-profile.jpg' ;
}
$vcard['fn'] = notags($vcard['fn']);
$vcard['nick'] = notags($vcard['nick']);
$result['name'] = $vcard['fn'];
$result['nick'] = $vcard['nick'];
$result['url'] = $profile;
$result['notify'] = $notify;
$result['poll'] = $poll;
$result['request'] = $request;
$result['confirm'] = $confirm;
$result['photo'] = $vcard['photo'];
$result['priority'] = $priority;
$result['network'] = $network;
$result['alias'] = $alias;
logger('probe_url: ' . print_r($result,true), LOGGER_DEBUG);
return $result;
}