relocated "follow" url scraping code so it can be used elsewhere (contact repair, etc.)

1 files changed, 191 insertions, 1 deletions

diff --git a/include/Scrape.php b/include/Scrape.php
index 002fdfb35..e5c10a9be 100644
--- a/include/Scrape.php
+++ b/include/Scrape.php
@@ -260,4 +260,194 @@ function scrape_feed($url) {
 	}
 
 	return $ret;
-}}
\ No newline at end of file
+}}
+
+
+function probe_url($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;
+}