Merge remote-tracking branch 'upstream/master'

1 files changed, 369 insertions, 0 deletions

diff --git a/mod/linkinfo.php b/mod/linkinfo.php
new file mode 100644
index 000000000..c3df1305d
--- /dev/null
+++ b/mod/linkinfo.php
@@ -0,0 +1,369 @@
+<?php
+
+
+function arr_add_hashes(&$item,$k) {
+	$item = '#' . $item;
+}
+
+
+
+function linkinfo_content(&$a) {
+
+	logger('linkinfo: ' . print_r($_REQUEST,true));
+
+	$text = null;
+	$str_tags = '';
+
+
+	$br = "\n";
+
+	if(x($_GET,'binurl'))
+		$url = trim(hex2bin($_GET['binurl']));
+	else
+		$url = trim($_GET['url']);
+
+	if((substr($url,0,1) != '/') && (substr($url,0,4) != 'http'))
+		$url = 'http://' . $url;
+
+
+	if($_GET['title'])
+		$title = strip_tags(trim($_GET['title']));
+
+	if($_GET['description'])
+		$text = strip_tags(trim($_GET['description']));
+
+	if($_GET['tags']) {
+		$arr_tags = str_getcsv($_GET['tags']);
+		if(count($arr_tags)) {
+			array_walk($arr_tags,'arr_add_hashes');
+			$str_tags = $br . implode(' ',$arr_tags) . $br;
+		}
+	}
+
+	logger('linkinfo: ' . $url);
+
+	$result = z_fetch_url($url,false,0,array('novalidate' => true, 'nobody' => true));
+	if($result['success']) {
+		$hdrs=array();
+		$h = explode("\n",$result['header']);
+		foreach ($h as $l) {
+			list($k,$v) = array_map("trim", explode(":", trim($l), 2));
+			$hdrs[$k] = $v;
+		}
+		if (array_key_exists('Content-Type', $hdrs))
+			$type = $hdrs['Content-Type'];
+		if($type) {
+			$zrl = is_matrix_url($url);
+			if(stripos($type,'image/') !== false) {
+				if($zrl)
+					echo $br . '[zmg]' . $url . '[/zmg]' . $br;
+				else
+					echo $br . '[img]' . $url . '[/img]' . $br;
+				killme();
+			}
+			if(stripos($type,'video/') !== false) {
+				if($zrl)
+					echo $br . '[zvideo]' . $url . '[/zvideo]' . $br;
+				else
+					echo $br . '[video]' . $url . '[/video]' . $br;
+				killme();
+			}
+			if(stripos($type,'audio/') !== false) {
+				if($zrl)
+					echo $br . '[zaudio]' . $url . '[/zaudio]' . $br;
+				else
+					echo $br . '[audio]' . $url . '[/audio]' . $br;
+				killme();
+			}
+		}
+	}
+
+	$template = $br . '#^[url=%s]%s[/url]%s' . $br;
+
+	$arr = array('url' => $url, 'text' => '');
+
+	call_hooks('parse_link', $arr);
+
+	if(strlen($arr['text'])) {
+		echo $arr['text'];
+		killme();
+	}
+
+	$x = oembed_process($url);
+	if($x) {
+		echo $x;
+		killme();
+	}
+
+	if($url && $title && $text) {
+
+		$text = $br . '[quote]' . trim($text) . '[/quote]' . $br;
+
+		$title = str_replace(array("\r","\n"),array('',''),$title);
+
+		$result = sprintf($template,$url,($title) ? $title : $url,$text) . $str_tags;
+
+		logger('linkinfo (unparsed): returns: ' . $result);
+
+		echo $result;
+		killme();
+	}
+
+	$siteinfo = parseurl_getsiteinfo($url);
+
+	// If this is a Red site, use zrl rather than url so they get zids sent to them by default
+
+	if( x($siteinfo,'generator') && (strpos($siteinfo['generator'],PLATFORM_NAME . ' ') === 0))
+		$template = str_replace('url','zrl',$template);
+
+	if($siteinfo["title"] == "") {
+		echo sprintf($template,$url,$url,'') . $str_tags;
+		killme();
+	} else {
+		$text = $siteinfo["text"];
+		$title = $siteinfo["title"];
+	}
+
+	$image = "";
+
+	if(sizeof($siteinfo["images"]) > 0){
+		/* Execute below code only if image is present in siteinfo */
+
+		$total_images = 0;
+		$max_images = get_config('system','max_bookmark_images');
+		if($max_images === false)
+			$max_images = 2;
+		else
+			$max_images = intval($max_images);
+
+		foreach ($siteinfo["images"] as $imagedata) {
+                        if ($url) {
+                            $image .= sprintf('[url=%s]', $url);
+                        }
+			$image .= '[img='.$imagedata["width"].'x'.$imagedata["height"].']'.$imagedata["src"].'[/img]';
+                        if ($url) {
+                            $image .= '[/url]';
+                        }
+                        $image .= "\n";
+			$total_images ++;
+			if($max_images && $max_images >= $total_images)
+				break;
+        }
+	}
+
+	if(strlen($text)) {
+		$text = $br.'[quote]'.trim($text).'[/quote]'.$br ;
+	}
+
+	if($image) {
+		$text = $br.$br.$image.$text;
+	}
+	$title = str_replace(array("\r","\n"),array('',''),$title);
+
+	$result = sprintf($template,$url,($title) ? $title : $url,$text) . $str_tags;
+
+	logger('linkinfo: returns: ' . $result, LOGGER_DEBUG);
+
+	echo trim($result);
+	killme();
+
+}
+
+
+function deletexnode(&$doc, $node) {
+	$xpath = new DomXPath($doc);
+	$list = $xpath->query("//".$node);
+	foreach ($list as $child)
+		$child->parentNode->removeChild($child);
+}
+
+function completeurl($url, $scheme) {
+        $urlarr = parse_url($url);
+
+        if (isset($urlarr["scheme"]))
+                return($url);
+
+        $schemearr = parse_url($scheme);
+
+        $complete = $schemearr["scheme"]."://".$schemearr["host"];
+
+        if ($schemearr["port"] != "")
+                $complete .= ":".$schemearr["port"];
+
+		if(strpos($urlarr['path'],'/') !== 0)
+			$complete .= '/';
+
+        $complete .= $urlarr["path"];
+
+        if ($urlarr["query"] != "")
+                $complete .= "?".$urlarr["query"];
+
+        if ($urlarr["fragment"] != "")
+                $complete .= "#".$urlarr["fragment"];
+
+        return($complete);
+}
+
+
+function parseurl_getsiteinfo($url) {
+	$siteinfo = array();
+
+
+	$result = z_fetch_url($url,false,0,array('novalidate' => true));
+	if(! $result['success'])
+		return $siteinfo;
+
+	$header = $result['header'];
+	$body   = $result['body'];
+
+	$body   = mb_convert_encoding($body, 'UTF-8', 'UTF-8');
+	$body   = mb_convert_encoding($body, 'HTML-ENTITIES', "UTF-8");
+
+	$doc    = new DOMDocument();
+	@$doc->loadHTML($body);
+
+	deletexnode($doc, 'style');
+	deletexnode($doc, 'script');
+	deletexnode($doc, 'option');
+	deletexnode($doc, 'h1');
+	deletexnode($doc, 'h2');
+	deletexnode($doc, 'h3');
+	deletexnode($doc, 'h4');
+	deletexnode($doc, 'h5');
+	deletexnode($doc, 'h6');
+	deletexnode($doc, 'ol');
+	deletexnode($doc, 'ul');
+
+	$xpath = new DomXPath($doc);
+
+	//$list = $xpath->query("head/title");
+	$list = $xpath->query("//title");
+	foreach ($list as $node)
+		$siteinfo["title"] =  html_entity_decode($node->nodeValue, ENT_QUOTES, "UTF-8");
+
+	//$list = $xpath->query("head/meta[@name]");
+	$list = $xpath->query("//meta[@name]");
+	foreach ($list as $node) {
+		$attr = array();
+		if ($node->attributes->length)
+                        foreach ($node->attributes as $attribute)
+                                $attr[$attribute->name] = $attribute->value;
+
+		$attr["content"] = html_entity_decode($attr["content"], ENT_QUOTES, "UTF-8");
+
+		switch (strtolower($attr["name"])) {
+			case 'generator':
+				$siteinfo['generator'] = $attr['content'];
+				break;
+			case "fulltitle":
+				$siteinfo["title"] = $attr["content"];
+				break;
+			case "description":
+				$siteinfo["text"] = $attr["content"];
+				break;
+			case "dc.title":
+				$siteinfo["title"] = $attr["content"];
+				break;
+			case "dc.description":
+				$siteinfo["text"] = $attr["content"];
+				break;
+		}
+	}
+
+	//$list = $xpath->query("head/meta[@property]");
+	$list = $xpath->query("//meta[@property]");
+	foreach ($list as $node) {
+		$attr = array();
+		if ($node->attributes->length)
+                        foreach ($node->attributes as $attribute)
+                                $attr[$attribute->name] = $attribute->value;
+
+		$attr["content"] = html_entity_decode($attr["content"], ENT_QUOTES, "UTF-8");
+
+		switch (strtolower($attr["property"])) {
+			case "og:image":
+				$siteinfo["image"] = $attr["content"];
+				break;
+			case "og:title":
+				$siteinfo["title"] = $attr["content"];
+				break;
+			case "og:description":
+				$siteinfo["text"] = $attr["content"];
+				break;
+		}
+	}
+
+	if ($siteinfo["image"] == "") {
+            $list = $xpath->query("//img[@src]");
+            foreach ($list as $node) {
+                $attr = array();
+                if ($node->attributes->length)
+                    foreach ($node->attributes as $attribute)
+                        $attr[$attribute->name] = $attribute->value;
+
+			$src = completeurl($attr["src"], $url);
+			$photodata = @getimagesize($src);
+
+			if (($photodata) && ($photodata[0] > 150) and ($photodata[1] > 150)) {
+				if ($photodata[0] > 300) {
+					$photodata[1] = round($photodata[1] * (300 / $photodata[0]));
+					$photodata[0] = 300;
+				}
+				if ($photodata[1] > 300) {
+					$photodata[0] = round($photodata[0] * (300 / $photodata[1]));
+					$photodata[1] = 300;
+				}
+				$siteinfo["images"][] = array("src"=>$src,
+								"width"=>$photodata[0],
+								"height"=>$photodata[1]);
+			}
+
+ 		}
+    } else {
+		$src = completeurl($siteinfo["image"], $url);
+
+		unset($siteinfo["image"]);
+
+		$photodata = @getimagesize($src);
+
+		if (($photodata) && ($photodata[0] > 10) and ($photodata[1] > 10))
+			$siteinfo["images"][] = array("src"=>$src,
+							"width"=>$photodata[0],
+							"height"=>$photodata[1]);
+	}
+
+	if ($siteinfo["text"] == "") {
+		$text = "";
+
+		$list = $xpath->query("//div[@class='article']");
+		foreach ($list as $node)
+			if (strlen($node->nodeValue) > 40)
+				$text .= " ".trim($node->nodeValue);
+
+		if ($text == "") {
+			$list = $xpath->query("//div[@class='content']");
+			foreach ($list as $node)
+				if (strlen($node->nodeValue) > 40)
+					$text .= " ".trim($node->nodeValue);
+		}
+
+		// If none text was found then take the paragraph content
+		if ($text == "") {
+			$list = $xpath->query("//p");
+			foreach ($list as $node)
+				if (strlen($node->nodeValue) > 40)
+					$text .= " ".trim($node->nodeValue);
+		}
+
+		if ($text != "") {
+			$text = trim(str_replace(array("\n", "\r"), array(" ", " "), $text));
+
+			while (strpos($text, "  "))
+				$text = trim(str_replace("  ", " ", $text));
+
+			$siteinfo["text"] = html_entity_decode(substr($text,0,350), ENT_QUOTES, "UTF-8").'...';
+		}
+	}
+
+	return($siteinfo);
+}