Merge remote-tracking branch 'origin/IDN' into dev

3 files changed, 18 insertions, 2 deletions

diff --git a/README.fr.md b/README.fr.md
index 380d7bc1e..ea5b07a9b 100644
--- a/README.fr.md
+++ b/README.fr.md
@@ -32,7 +32,7 @@ Privilégiez pour cela des demandes sur GitHub
 	* Fonctionne même sur un Raspberry Pi avec des temps de réponse < 1s (testé sur 150 flux, 22k articles, soit 32Mo de données partiellement compressées)
 * Serveur Web Apache2 (recommandé), ou nginx, lighttpd (non testé sur les autres)
 * PHP 5.2.1+ (PHP 5.3.7+ recommandé)
-	* Requis : [PDO_MySQL](http://php.net/pdo-mysql) ou [PDO_SQLite](http://php.net/pdo-sqlite), [cURL](http://php.net/curl), [GMP](http://php.net/gmp) (seulement pour accès API sur platformes < 64 bits)
+	* Requis : [PDO_MySQL](http://php.net/pdo-mysql) ou [PDO_SQLite](http://php.net/pdo-sqlite), [cURL](http://php.net/curl), [GMP](http://php.net/gmp) (pour accès API sur platformes < 64 bits), [IDN](http://php.net/intl.idn) (pour les noms de domaines internationalisés)
 	* Recommandés : [JSON](http://php.net/json), [mbstring](http://php.net/mbstring), [zlib](http://php.net/zlib), [Zip](http://php.net/zip)
 * MySQL 5.0.3+ (recommandé) ou SQLite 3.7.4+
 * Un navigateur Web récent tel Firefox 4+, Chrome, Opera, Safari, Internet Explorer 9+
diff --git a/README.md b/README.md
index a09a64639..92072b07d 100644
--- a/README.md
+++ b/README.md
@@ -32,7 +32,7 @@ The best way is to open issues on GitHub
 	* It even works on Raspberry Pi with response time under a second (tested with 150 feeds, 22k articles, or 32Mo of compressed data)
 * A web server: Apache2 (recommanded), nginx, lighttpd (not tested on others)
 * PHP 5.2.1+ (PHP 5.3.7+ recommanded)
-	* Required extensions: [PDO_MySQL](http://php.net/pdo-mysql) or [PDO_SQLite](http://php.net/pdo-sqlite), [cURL](http://php.net/curl), [GMP](http://php.net/gmp) (only for API access on platforms under 64 bits)
+	* Required extensions: [PDO_MySQL](http://php.net/pdo-mysql) or [PDO_SQLite](http://php.net/pdo-sqlite), [cURL](http://php.net/curl), [GMP](http://php.net/gmp) (for API access on platforms < 64 bits), [IDN](http://php.net/intl.idn) (for Internationalized Domain Names)
 	* Recommanded extensions : [JSON](http://php.net/json), [mbstring](http://php.net/mbstring), [zlib](http://php.net/zlib), [Zip](http://php.net/zip)
 * MySQL 5.0.3+ (recommanded) or SQLite 3.7.4+
 * A recent browser like Firefox 4+, Chrome, Opera, Safari, Internet Explorer 9+
diff --git a/lib/lib_rss.php b/lib/lib_rss.php
index db8fa63d1..79be90a1c 100644
--- a/lib/lib_rss.php
+++ b/lib/lib_rss.php
@@ -51,6 +51,21 @@ function classAutoloader($class) {
 spl_autoload_register('classAutoloader');
 //</Auto-loading>
 
+function idn_to_punny($url) {
+	if (function_exists('idn_to_ascii')) {
+		$parts = parse_url($url);
+		if (!empty($parts['host'])) {
+			$idn = $parts['host'];
+			$punny = idn_to_ascii($idn);
+			$pos = strpos($url, $idn);
+			if ($pos !== false) {
+				return substr_replace($url, $punny, $pos, strlen($idn));
+			}
+		}
+	}
+	return $url;
+}
+
 function checkUrl($url) {
 	if (empty ($url)) {
 		return '';
@@ -58,6 +73,7 @@ function checkUrl($url) {
 	if (!preg_match ('#^https?://#i', $url)) {
 		$url = 'http://' . $url;
 	}
+	$url = idn_to_punny($url);	//PHP bug #53474 IDN
 	if (filter_var($url, FILTER_VALIDATE_URL) ||
 		(version_compare(PHP_VERSION, '5.3.3', '<') && (strpos($url, '-') > 0) &&	//PHP bug #51192
 		 ($url === filter_var($url, FILTER_SANITIZE_URL)))) {