X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=include%2FScrape.php;h=cc46af64454be5d6b9254da8b3cdc5f9510ff0a7;hb=afbc46c00f3fcd66603bb6b725fd687335376d2d;hp=21e6bd01ff368fa3ad31ce6ff761c64acb56739c;hpb=44d5c90af446537ddd292caff0cd85370a7339ab;p=friendica.git

diff --git a/include/Scrape.php b/include/Scrape.php
index 21e6bd01ff..cc46af6445 100644
--- a/include/Scrape.php
+++ b/include/Scrape.php
@@ -1,6 +1,7 @@
 <?php
 
 require_once('library/HTML5/Parser.php');
+require_once('include/crypto.php');
 
 if(! function_exists('scrape_dfrn')) {
 function scrape_dfrn($url) {
@@ -43,8 +44,9 @@ function scrape_dfrn($url) {
 		$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-")
+		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))
@@ -54,17 +56,28 @@ function scrape_dfrn($url) {
 
 	// Pull out hCard profile elements
 
+	$largest_photo = 0;
+
 	$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'))
+				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'))
+				}
+				if((attribute_contains($x->getAttribute('class'),'photo'))
+					|| (attribute_contains($x->getAttribute('class'),'avatar'))) {
+					$size = intval($x->getAttribute('width'));
+					// dfrn prefers 175, so if we find this, we set largest_size so it can't be topped.
+					if(($size > $largest_photo) || ($size == 175) || (! $largest_photo)) {
+						$ret['photo'] = $x->getAttribute('src');
+						$largest_photo = (($size == 175) ? 9999 : $size);
+					}
+				}
+				if(attribute_contains($x->getAttribute('class'),'key')) {
 					$ret['key'] = $x->textContent;
+				}
 			}
 		}
 	}
@@ -171,6 +184,8 @@ function scrape_vcard($url) {
 
 	// Pull out hCard profile elements
 
+	$largest_photo = 0;
+
 	$items = $dom->getElementsByTagName('*');
 	foreach($items as $item) {
 		if(attribute_contains($item->getAttribute('class'), 'vcard')) {
@@ -179,11 +194,17 @@ function scrape_vcard($url) {
 				if(attribute_contains($x->getAttribute('class'),'fn'))
 					$ret['fn'] = $x->textContent;
 				if((attribute_contains($x->getAttribute('class'),'photo'))
-					|| (attribute_contains($x->getAttribute('class'),'avatar')))
-					$ret['photo'] = $x->getAttribute('src');
+					|| (attribute_contains($x->getAttribute('class'),'avatar'))) {
+					$size = intval($x->getAttribute('width'));
+					if(($size > $largest_photo) || (! $largest_photo)) {
+						$ret['photo'] = $x->getAttribute('src');
+						$largest_photo = $size;
+					}
+				}
 				if((attribute_contains($x->getAttribute('class'),'nickname'))
-					|| (attribute_contains($x->getAttribute('class'),'uid')))
+					|| (attribute_contains($x->getAttribute('class'),'uid'))) {
 					$ret['nick'] = $x->textContent;
+				}
 			}
 		}
 	}
@@ -241,6 +262,17 @@ function scrape_feed($url) {
 		}
 	}
 
+
+	$head = $dom->getElementsByTagName('base');
+	if($head) {
+		foreach($head as $head0) {
+			$basename = $head0->getAttribute('href');
+			break;
+		}
+	}
+	if(! $basename)
+		$basename = substr($url,0,strrpos($url,'/')) . '/';
+
 	$items = $dom->getElementsByTagName('link');
 
 	// get Atom/RSS link elements, take the first one of either.
@@ -259,11 +291,40 @@ function scrape_feed($url) {
 		}	
 	}
 
+	// Drupal and perhaps others only provide relative URL's. Turn them into absolute.
+
+	if(x($ret,'feed_atom') && (! strstr($ret['feed_atom'],'://')))
+		$ret['feed_atom'] = $basename . $ret['feed_atom'];
+	if(x($ret,'feed_rss') && (! strstr($ret['feed_rss'],'://')))
+		$ret['feed_rss'] = $basename . $ret['feed_rss'];
+
 	return $ret;
 }}
 
 
-function probe_url($url) {
+/**
+ *
+ * Probe a network address to discover what kind of protocols we need to communicate with it.
+ *
+ * Warning: this function is a bit touchy and there are some subtle dependencies within the logic flow.
+ * Edit with care.
+ *
+ */
+
+/**
+ *
+ * PROBE_DIASPORA has a bias towards returning Diaspora information
+ * while PROBE_NORMAL has a bias towards dfrn/zot - in the case where
+ * an address (such as a Friendika address) supports more than one type
+ * of network. 
+ *
+ */
+
+
+define ( 'PROBE_NORMAL',   0);
+define ( 'PROBE_DIASPORA', 1);
+
+function probe_url($url, $mode = PROBE_NORMAL) {
 	require_once('include/email.php');
 
 	$result = array();
@@ -271,15 +332,30 @@ function probe_url($url) {
 	if(! $url)
 		return $result;
 
-	$diaspora = false;	
+	$diaspora = false;
+	$diaspora_base = '';
+	$diaspora_guid = '';	
+	$diaspora_key = '';
 	$email_conversant = false;
 
-	if($url) {
-		$links = lrdd($url);
+	$twitter = ((strpos($url,'twitter.com') !== false) ? true : false);
+
+	$at_addr = ((strpos($url,'@') !== false) ? true : false);
+
+	if(! $twitter) {
+
+		if(strpos($url,'mailto:') !== false && $at_addr) {
+			$url = str_replace('mailto:','',$url);
+			$links = array();
+		}
+		else
+			$links = lrdd($url);
 
 		if(count($links)) {
 			logger('probe_url: found lrdd links: ' . print_r($links,true), LOGGER_DATA);
 			foreach($links as $link) {
+				if($link['@attributes']['rel'] === NAMESPACE_ZOT)
+					$zot = unamp($link['@attributes']['href']);
 				if($link['@attributes']['rel'] === NAMESPACE_DFRN)
 					$dfrn = unamp($link['@attributes']['href']);
 				if($link['@attributes']['rel'] === 'salmon')
@@ -290,8 +366,19 @@ function probe_url($url) {
 					$hcard = unamp($link['@attributes']['href']);
 				if($link['@attributes']['rel'] === 'http://webfinger.net/rel/profile-page')
 					$profile = unamp($link['@attributes']['href']);
-				if($link['@attributes']['rel'] === 'http://joindiaspora.com/seed_location')
+				if($link['@attributes']['rel'] === 'http://joindiaspora.com/seed_location') {
+					$diaspora_base = unamp($link['@attributes']['href']);
+					$diaspora = true;
+				}
+				if($link['@attributes']['rel'] === 'http://joindiaspora.com/guid') {
+					$diaspora_guid = unamp($link['@attributes']['href']);
+					$diaspora = true;
+				}
+				if($link['@attributes']['rel'] === 'diaspora-public-key') {
+					$diaspora_key = base64_decode(unamp($link['@attributes']['href']));
+					$pubkey = rsatopem($diaspora_key);
 					$diaspora = true;
+				}
 			}
 
 			// Status.Net can have more than one profile URL. We need to match the profile URL
@@ -314,7 +401,7 @@ function probe_url($url) {
 				}
 			}
 		}
-		else {
+		elseif($mode == PROBE_NORMAL) {
 
 			// Check email
 
@@ -359,22 +446,58 @@ function probe_url($url) {
 		}
 	}	
 
-	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    = $ret['dfrn-poll'];
+	if($mode == PROBE_NORMAL) {
+		if(strlen($zot)) {
+			$s = fetch_url($zot);
+			if($s) {
+				$j = json_decode($s);
+				if($j) {
+					$network = NETWORK_ZOT;
+					$vcard   = array(
+						'fn'    => $j->fullname, 
+						'nick'  => $j->nickname, 
+						'photo' => $j->photo
+					);
+					$profile  = $j->url;
+					$notify   = $j->post;
+					$pubkey   = $j->pubkey;
+					$poll     = 'N/A';
+				}
+			}
+		}
+
+		if(strlen($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'];
+
+				$vcard = array();
+				$vcard['fn'] = $ret['fn'];
+				$vcard['nick'] = $ret['nick'];
+				$vcard['photo'] = $ret['photo'];
+			}
 		}
 	}
 
-	if($network !== NETWORK_DFRN && $network !== NETWORK_MAIL) {
-		$network  = NETWORK_OSTATUS;
+	if($diaspora && $diaspora_base && $diaspora_guid) {
+		if($mode == PROBE_DIASPORA || ! $notify)
+			$notify = $diaspora_base . 'receive/users/' . $diaspora_guid;
+		if(strpos($url,'@'))
+			$addr = str_replace('acct:', '', $url);
+	}			
+
+	if($network !== NETWORK_ZOT && $network !== NETWORK_DFRN && $network !== NETWORK_MAIL) {
+		if($diaspora)
+			$network = NETWORK_DIASPORA;
+		else
+			$network  = NETWORK_OSTATUS;
 		$priority = 0;
 
-		if($hcard) {
+		if($hcard && ! $vcard) {
 			$vcard = scrape_vcard($hcard);
 
 			// Google doesn't use absolute url in profile photos
@@ -388,83 +511,135 @@ function probe_url($url) {
 			logger('probe_url: scrape_vcard: ' . print_r($vcard,true), LOGGER_DATA);
 		}
 
-		if(! $profile) {
-			if($diaspora)
-				$profile = $hcard;
+		if($twitter) {		
+			logger('twitter: setup');
+			$tid = basename($url);
+			$tapi = 'https://api.twitter.com/1/statuses/user_timeline.rss';
+			if(intval($tid))
+				$poll = $tapi . '?user_id=' . $tid;
 			else
-				$profile = $url;
+				$poll = $tapi . '?screen_name=' . $tid;
+			$profile = 'http://twitter.com/#!/' . $tid;
 		}
 
 		if(! x($vcard,'fn'))
 			if(x($vcard,'nick'))
 				$vcard['fn'] = $vcard['nick'];
 
-		if((! isset($vcard)) && (! $poll)) {
+		$check_feed = false;
 
-			$ret = scrape_feed($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());
+		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'],'@'));
-							$vcard['nick'] = strtolower(unxmlify($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']);
-						}
+			}
+			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((! $vcard['photo']) && strlen($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 = 'feed';
+			if(! $priority)
 				$priority = 2;
-			}
 		}
 	}
 
@@ -472,8 +647,12 @@ function probe_url($url) {
 		$a = get_app();
 		$vcard['photo'] = $a->get_baseurl() . '/images/default-profile.jpg' ; 
 	}
+
+	if(! $profile)
+		$profile = $url;
+
 	$vcard['fn'] = notags($vcard['fn']);
-	$vcard['nick'] = notags($vcard['nick']);
+	$vcard['nick'] = str_replace(' ','',notags($vcard['nick']));
 
 
 	$result['name'] = $vcard['fn'];
@@ -488,6 +667,7 @@ function probe_url($url) {
 	$result['priority'] = $priority;
 	$result['network'] = $network;
 	$result['alias'] = $alias;
+	$result['pubkey'] = $pubkey;
 
 	logger('probe_url: ' . print_r($result,true), LOGGER_DEBUG);