From 2866f62c88dbf65d72cfe690150b2215515b803d Mon Sep 17 00:00:00 2001
From: Michael Vogel <icarus@dabo.de>
Date: Sat, 2 Mar 2013 14:46:06 +0100
Subject: [PATCH] Suppoorting Open Graph and Dublin Core when displaying single
 item Following link shorteners in parse_url

---
 mod/display.php                         | 26 +++++++++++++++++++++++++
 mod/parse_url.php                       | 23 ++++++++++++++++------
 view/theme/vier/smarty3/wall_thread.tpl |  2 +-
 view/theme/vier/wall_thread.tpl         |  2 +-
 4 files changed, 45 insertions(+), 8 deletions(-)

diff --git a/mod/display.php b/mod/display.php
index 57a329f305..e272674354 100644
--- a/mod/display.php
+++ b/mod/display.php
@@ -166,6 +166,32 @@ function display_content(&$a, $update = 0) {
 			$o .= "<script> var netargs = '?f=&nick=" . $nick . "&item_id=" . $item_id . "'; </script>";
 		$o .= conversation($a,$items,'display', $update);
 
+		// Preparing the meta header
+		require_once('include/bbcode.php');
+		require_once("include/html2plain.php");
+		$description = trim(html2plain(bbcode($r[0]["body"], false, false), 0, true));
+		$title = trim(html2plain(bbcode($r[0]["title"], false, false), 0, true));
+
+		if ($title == "")
+			$title = $r[0]["author-name"];
+
+		//<meta name="keywords" content="">
+		$a->page['htmlhead'] .= '<meta name="author" content="'.$r[0]["author-name"].'" />'."\n";
+		$a->page['htmlhead'] .= '<meta name="title" content="'.$title.'" />'."\n";
+		$a->page['htmlhead'] .= '<meta name="fulltitle" content="'.$title.'" />'."\n";
+		$a->page['htmlhead'] .= '<meta name="description" content="'.$description.'" />'."\n";
+
+		$a->page['htmlhead'] .= '<meta name="DC.title" content="'.$title.'" />'."\n";
+		$a->page['htmlhead'] .= '<meta name="DC.description" content="'.$description.'" />'."\n";
+
+		$a->page['htmlhead'] .= '<meta property="og:type" content="website" />'."\n";
+		$a->page['htmlhead'] .= '<meta property="og:title" content="'.$title.'" />'."\n";
+		//<meta property="og:image" content="" />
+		$a->page['htmlhead'] .= '<meta property="og:url" content="'.$r[0]["plink"].'" />'."\n";
+		$a->page['htmlhead'] .= '<meta property="og:description" content="'.$description.'" />'."\n";
+		$a->page['htmlhead'] .= '<meta name="og:article:author" content="'.$r[0]["author-name"].'" />'."\n";
+		// article:tag
+
 	}
 	else {
 		$r = q("SELECT `id`,`deleted` FROM `item` WHERE `id` = '%s' OR `uri` = '%s' LIMIT 1",
diff --git a/mod/parse_url.php b/mod/parse_url.php
index 1393a15d36..c8670d4d96 100644
--- a/mod/parse_url.php
+++ b/mod/parse_url.php
@@ -33,7 +33,7 @@ function completeurl($url, $scheme) {
 
         $complete = $schemearr["scheme"]."://".$schemearr["host"];
 
-        if ($schemearr["port"] != "")
+        if (@$schemearr["port"] != "")
                 $complete .= ":".$schemearr["port"];
 
 		if(strpos($urlarr['path'],'/') !== 0)
@@ -41,10 +41,10 @@ function completeurl($url, $scheme) {
 
         $complete .= $urlarr["path"];
 
-        if ($urlarr["query"] != "")
+        if (@$urlarr["query"] != "")
                 $complete .= "?".$urlarr["query"];
 
-        if ($urlarr["fragment"] != "")
+        if (@$urlarr["fragment"] != "")
                 $complete .= "#".$urlarr["fragment"];
 
         return($complete);
@@ -52,18 +52,29 @@ function completeurl($url, $scheme) {
 
 function parseurl_getsiteinfo($url) {
 	$siteinfo = array();
-
 	$ch = curl_init();
 	curl_setopt($ch, CURLOPT_URL, $url);
 	curl_setopt($ch, CURLOPT_HEADER, 1);
 	curl_setopt($ch, CURLOPT_NOBODY, 0);
 	curl_setopt($ch, CURLOPT_TIMEOUT, 3);
 	curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+	//curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
 	curl_setopt($ch,CURLOPT_USERAGENT,'Opera/9.64(Windows NT 5.1; U; de) Presto/2.1.1');
 
 	$header = curl_exec($ch);
+	$curl_info = @curl_getinfo($ch);
+        $http_code = $curl_info['http_code'];
 	curl_close($ch);
 
+	if ((($curl_info['http_code'] == "301") OR ($curl_info['http_code'] == "302"))
+		AND (($curl_info['redirect_url'] != "") OR ($curl_info['location'] != ""))) {
+		if ($curl_info['redirect_url'] != "")
+			$siteinfo = parseurl_getsiteinfo($curl_info['redirect_url']);
+		else
+			$siteinfo = parseurl_getsiteinfo($curl_info['location']);
+		return($siteinfo);
+	}
+
 	// Fetch the first mentioned charset. Can be in body or header
 	if (preg_match('/charset=(.*?)['."'".'"\s\n]/', $header, $matches))
 		$charset = trim(array_pop($matches));
@@ -173,7 +184,7 @@ function parseurl_getsiteinfo($url) {
 		}
 	}
 
-	if ($siteinfo["image"] == "") {
+	if (@$siteinfo["image"] == "") {
             $list = $xpath->query("//img[@src]");
             foreach ($list as $node) {
                 $attr = array();
@@ -212,7 +223,7 @@ function parseurl_getsiteinfo($url) {
 							"height"=>$photodata[1]);
 	}
 
-	if ($siteinfo["text"] == "") {
+	if (@$siteinfo["text"] == "") {
 		$text = "";
 
 		$list = $xpath->query("//div[@class='article']");
diff --git a/view/theme/vier/smarty3/wall_thread.tpl b/view/theme/vier/smarty3/wall_thread.tpl
index 5559a20659..adaf0b639f 100644
--- a/view/theme/vier/smarty3/wall_thread.tpl
+++ b/view/theme/vier/smarty3/wall_thread.tpl
@@ -64,7 +64,7 @@
 			</span>
 		</div>
 
-		<div class="wall-item-content">
+		<div itemprop="description" class="wall-item-content">
 			{{if $item.title}}<h2><a href="{{$item.plink.href}}" class="{{$item.sparkle}}">{{$item.title}}</a></h2>{{/if}}
 			{{$item.body}}
 		</div>
diff --git a/view/theme/vier/wall_thread.tpl b/view/theme/vier/wall_thread.tpl
index 366493a686..7ca07d8591 100644
--- a/view/theme/vier/wall_thread.tpl
+++ b/view/theme/vier/wall_thread.tpl
@@ -59,7 +59,7 @@
 			</span>
 		</div>
 
-		<div class="wall-item-content">
+		<div itemprop="description" class="wall-item-content">
 			{{ if $item.title }}<h2><a href="$item.plink.href" class="$item.sparkle">$item.title</a></h2>{{ endif }}
 			$item.body
 		</div>