From 831129f6a4c63530674c8bc73550fc83998971f3 Mon Sep 17 00:00:00 2001
From: Andrew Dolgov <noreply@fakecake.org>
Date: Wed, 8 Jul 2015 10:35:19 +0300
Subject: [PATCH] ad_readability: also check for content-type if possible

---
 plugins/af_readability/init.php | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/plugins/af_readability/init.php b/plugins/af_readability/init.php
index 15b88d32c..b58be43d2 100644
--- a/plugins/af_readability/init.php
+++ b/plugins/af_readability/init.php
@@ -98,11 +98,30 @@ class Af_Readability extends Plugin {
 
 		if (!class_exists("Readability")) require_once(__DIR__ . "/classes/Readability.php");
 
+		if (function_exists("curl_init")) {
+			$ch = curl_init($article["link"]);
+			curl_setopt($ch, CURLOPT_TIMEOUT, 5);
+			curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
+			curl_setopt($ch, CURLOPT_HEADER, true);
+			curl_setopt($ch, CURLOPT_NOBODY, true);
+			curl_setopt($ch, CURLOPT_FOLLOWLOCATION,
+				!ini_get("safe_mode") && !ini_get("open_basedir"));
+			curl_setopt($ch, CURLOPT_USERAGENT, SELF_USER_AGENT);
+
+			@$result = curl_exec($ch);
+			$content_type = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
+
+			if (strpos($content_type, "text/html") === FALSE)
+				return $article;
+		}
+
 		$tmp = fetch_file_contents($article["link"]);
 
 		if ($tmp) {
 			$tmpdoc = new DOMDocument("1.0", "UTF-8");
-			$tmpdoc->loadHTML($tmp);
+
+			if (!$tmpdoc->loadHTML($tmp))
+				return $article;
 
 			if ($tmpdoc->encoding != 'UTF-8') {
 				$tmpxpath = new DOMXPath($tmpdoc);