From: Maximilian Mader <maximilian.mader@gmx.de>
Date: Sat, 3 Aug 2013 21:56:13 +0000 (+0200)
Subject: Don't allow dates prior to 1980-01-01
X-Git-Tag: 2.0.0_Beta_7~62^2~17^2~1
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=6079dbbd29a3288156a262a76239567f89c6814c;p=GitHub%2FWoltLab%2FWCF.git

Don't allow dates prior to 1980-01-01

See WoltLab/WCF#1443

Zip doesn't support dates prior to `1980-01-01 00:00 UTC`
---

diff --git a/wcfsetup/install/files/lib/system/io/ZipWriter.class.php b/wcfsetup/install/files/lib/system/io/ZipWriter.class.php
index 39dc4c14d2..08c2e1d9e2 100644
--- a/wcfsetup/install/files/lib/system/io/ZipWriter.class.php
+++ b/wcfsetup/install/files/lib/system/io/ZipWriter.class.php
@@ -2,6 +2,7 @@
 namespace wcf\system\io;
 use wcf\util\FileUtil;
 use wcf\util\StringUtil;
+use wcf\system\exception\SystemException;
 
 /**
  * Creates a Zip file archive.
@@ -81,9 +82,14 @@ class ZipWriter {
 	 * 
 	 * @param	string		$data		content of the file
 	 * @param	string		$name		filename
-	 * @param	integer		$date		file creation time as unix timestamp
+	 * @param	integer		$date		file creation time as unix timestamp, must at least be 315532800 (1980-01-01 00:00 UTC)
 	 */
-	public function addFile($data, $name, $date = 0) {
+	public function addFile($data, $name, $date = TIME_NOW) {
+		// 315532800 is the same as strtotime('1980-01-01 00:00 UTC')
+		if ($date < 315532800) {
+			throw new SystemException('Unsupported date, must be at least 315532800 (1980-01-01 00:00 UTC)');
+		}
+		
 		// replace backward slashes with forward slashes in the filename
 		$name = StringUtil::replace("\\", "/", $name);