From: Greg Beaver <cellog@php.net>
Date: Sat, 19 Apr 2008 05:15:24 +0000 (+0000)
Subject: add utility for creating corrupted zip archives for testing purposes
X-Git-Tag: RELEASE_2_0_0b1~329
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=410ce457abb9b8ef1cbfb535008355e4eae89bc9;p=php

add utility for creating corrupted zip archives for testing purposes
---

diff --git a/ext/phar/tests/zip/files/corrupt_zipmaker.php.inc b/ext/phar/tests/zip/files/corrupt_zipmaker.php.inc
new file mode 100644
index 0000000000..315cca0c19
--- /dev/null
+++ b/ext/phar/tests/zip/files/corrupt_zipmaker.php.inc
@@ -0,0 +1,286 @@
+<?php
+// this corrupt zip maker uses portions of Vincent Lascaux's File_Archive to create
+// specifically corrupted zip archives for unit-testing zip support in the phar extension
+// and was modified by Greg Beaver
+/**
+ * ZIP archive writer
+ *
+ * PHP versions 4 and 5
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330,Boston,MA 02111-1307 USA
+ *
+ * @category   File Formats
+ * @package    File_Archive
+ * @author     Vincent Lascaux <vincentlascaux@php.net>
+ * @copyright  1997-2005 The PHP Group
+ * @license    http://www.gnu.org/copyleft/lesser.html  LGPL
+ * @version    CVS: $Id$
+ * @link       http://pear.php.net/package/File_Archive
+ */
+
+/**
+ * ZIP archive writer
+ */
+class corrupt_zipmaker
+{
+	/**
+	* @var int Current position in the writer
+	* @access private
+	*/
+	var $offset = 0;
+
+	/**
+	* @var string Optionnal comment to add to the zip
+	* @access private
+	*/
+	var $comment = "";
+
+	/**
+	* @var string Data written at the end of the ZIP file
+	* @access private
+	*/
+	var $central = "";
+
+	/**
+	* @var string Data written at the start of the ZIP file
+	* @access private
+	*/
+	var $start = "";
+
+	/**
+	* Set a comment on the ZIP file
+	*/
+	function setComment($comment) { $this->comment = $comment; }
+
+	/**
+	* @param int $time Unix timestamp of the date to convert
+	* @return the date formated as a ZIP date
+	*/
+	function getMTime($time)
+	{
+		$mtime = ($time !== null ? getdate($time) : getdate());
+		$mtime = preg_replace(
+				"/(..){1}(..){1}(..){1}(..){1}/",
+				"\\x\\4\\x\\3\\x\\2\\x\\1",
+				dechex(($mtime['year']-1980<<25)|
+					($mtime['mon'    ]<<21)|
+					($mtime['mday'   ]<<16)|
+					($mtime['hours'  ]<<11)|
+					($mtime['minutes']<<5)|
+					($mtime['seconds']>>1)));
+		eval('$mtime = "'.$mtime.'";');
+		return $mtime;
+	}
+
+	private function getFileEntry($compmethod, $mtime, $crc32, $complength, $uncomplength, $filename, $data, $corrupt)
+	{
+		switch ($corrupt) {
+			case null :
+				$file = "PK\x03\x04\x14\x00\x00\x00" . pack('v', $compmethod) .
+						$mtime .
+						pack("VVVvv", $crc32, $complength, $uncomplength, strlen($filename), 0x00) .
+						$filename .
+						$data;
+				break;
+			case 'crc32' :
+				$file = "PK\x03\x04\x14\x00\x00\x00" . pack('v', $compmethod) .
+						$mtime .
+						pack("VVVvv", $crc32 + 1, $complength, $uncomplength, strlen($filename), 0x00) .
+						$filename .
+						$data;
+				break;
+			case 'complength' :
+				$file = "PK\x03\x04\x14\x00\x00\x00" . pack('v', $compmethod) .
+						$mtime .
+						pack("VVVvv", $crc32, $complength + 1, $uncomplength, strlen($filename), 0x00) .
+						$filename .
+						$data;
+				break;
+			case 'uncomplength' :
+				$file = "PK\x03\x04\x14\x00\x00\x00" . pack('v', $compmethod) .
+						$mtime .
+						pack("VVVvv", $crc32, $complength, $uncomplength - 1, strlen($filename), 0x00) .
+						$filename .
+						$data;
+				break;
+			case 'filename_len' :
+				$file = "PK\x03\x04\x14\x00\x00\x00" . pack('v', $compmethod) .
+						$mtime .
+						pack("VVVvv", $crc32, $complength, $uncomplength, strlen($filename) - 1, 0x00) .
+						$filename .
+						$data;
+				break;
+			case 'extra_len' :
+				$file = "PK\x03\x04\x14\x00\x00\x00" . pack('v', $compmethod) .
+						$mtime .
+						pack("VVVvv", $crc32, $complength, $uncomplength, strlen($filename), 1) .
+						$filename .
+						$data;
+				break;
+			case 'filename' :
+				$file = "PK\x03\x04\x14\x00\x00\x00" . pack('v', $compmethod) .
+						$mtime .
+						pack("VVVvv", $crc32, $complength, $uncomplength, strlen($filename), 0x00) .
+						substr($filename, 1) .
+						$data;
+				break;
+			case 'data' :
+				$file = "PK\x03\x04\x14\x00\x00\x00" . pack('v', $compmethod) .
+						$mtime .
+						pack("VVVvv", $crc32, $complength, $uncomplength, strlen($filename), 0x00) .
+						$filename .
+						substr($data, 1);
+				break;
+		}
+		return $file;
+	}
+
+	private function getCentralEntry($compmethod, $mtime, $crc32, $complength, $uncomplength, $filename, $comment, $corrupt, &$offset)
+	{
+		settype($comment, 'string');
+		switch ($corrupt) {
+			case null :
+				$central = "PK\x01\x02\x00\x00\x14\x00\x00\x00" . pack('v', $compmethod) .
+						$mtime .
+						pack("VVVvvvvvVV", $crc32, $complength, $uncomplength, strlen($filename), 0x00,strlen($comment),0x00,0x00,
+							0x0000, $this->offset).
+						$filename . $comment;
+				$offset = strlen($central);
+				break;
+			case 'crc32' :
+				$central = "PK\x01\x02\x00\x00\x14\x00\x00\x00" . pack('v', $compmethod) .
+						$mtime .
+						pack("VVVvvvvvVV", $crc32 + 1, $complength, $uncomplength, strlen($filename), 0x00,strlen($comment),0x00,0x00,
+							0x0000, $this->offset).
+						$filename . $comment;
+				$offset = strlen($central);
+				break;
+			case 'complength' :
+				$central = "PK\x01\x02\x00\x00\x14\x00\x00\x00" . pack('v', $compmethod) .
+						$mtime .
+						pack("VVVvvvvvVV", $crc32, $complength - 1, $uncomplength, strlen($filename), 0x00,strlen($comment),0x00,0x00,
+							0x0000, $this->offset).
+						$filename . $comment;
+				$offset = strlen($central);
+				break;
+			case 'uncomplength' :
+				$central = "PK\x01\x02\x00\x00\x14\x00\x00\x00" . pack('v', $compmethod) .
+						$mtime .
+						pack("VVVvvvvvVV", $crc32, $complength, $uncomplength - 1, strlen($filename), 0x00,strlen($comment),0x00,0x00,
+							0x0000, $this->offset).
+						$filename . $comment;
+				$offset = strlen($central);
+				break;
+			case 'filename_len' :
+				$central = "PK\x01\x02\x00\x00\x14\x00\x00\x00" . pack('v', $compmethod) .
+						$mtime .
+						pack("VVVvvvvvVV", $crc32, $complength, $uncomplength, strlen($filename) - 1, 0x00,strlen($comment),0x00,0x00,
+							0x0000, $this->offset).
+						$filename . $comment;
+				$offset = strlen($central);
+				break;
+			case 'offset' :
+				$central = "PK\x01\x02\x00\x00\x14\x00\x00\x00" . pack('v', $compmethod) .
+						$mtime .
+						pack("VVVvvvvvVV", $crc32, $complength, $uncomplength, strlen($filename), 0x00,strlen($comment),0x00,0x00,
+							0x0000, $this->offset - 1).
+						$filename . $comment;
+				$offset = strlen($central) - 1;
+				break;
+			case 'comment' :
+				$central = "PK\x01\x02\x00\x00\x14\x00\x00\x00" . pack('v', $compmethod) .
+						$mtime .
+						pack("VVVvvvvvVV", $crc32, $complength, $uncomplength, strlen($filename), 0x00,strlen($comment) + 1,0x00,0x00,
+							0x0000, $this->offset).
+						$filename . $comment;
+				$offset = strlen($central);
+				break;
+		}
+		return $central;
+	}
+
+	function addFile($filename, $mtime, $data, $comment = null, $compress = null, $filecorrupt = null, $centralcorrupt = null)
+	{
+		$mtime = $this->getMTime($mtime ? $mtime : null);
+
+		$uncomplength = strlen($data);
+		$crc32 = crc32($data) & 0xFFFFFFFF;
+		$compmethod = 0;
+		switch ($compress) {
+			case 'gz' :
+				$data = gzcompress($data);
+				$compmethod = 8;
+				break;
+			case 'bz2' :
+				$data = bzcompress($data);
+				$compmethod = 12;
+				break;
+		}
+		$complength = strlen($data);
+
+		$this->start .= ($file = $this->getFileEntry($compmethod, $mtime, $crc32, $complength, $uncomplength, $filename, $data, $filecorrupt));
+
+		$offset = 0;
+		$this->central .= $this->getCentralEntry($compmethod, $mtime, $crc32, $complength, $uncomplength, $filename, $comment, $centralcorrupt, $offset);
+
+		$this->offset += $offset;
+		$this->count++;
+	}
+
+	function writeZip($zipfile, $corrupt = null)
+	{
+		$write = $this->start . $this->central;
+		switch ($corrupt) {
+			case null :
+				$write .= "PK\x05\x06\x00\x00\x00\x00" .
+					pack("vvVVv", $this->count, $this->count,
+					$this->offset, strlen($this->start),
+					strlen($this->comment)) . $this->comment;
+				break;
+			case 'count1' :
+				$write .= "PK\x05\x06\x00\x00\x00\x00" .
+					pack("vvVVv", $this->count + 1, $this->count,
+					$this->offset, strlen($this->start),
+					strlen($this->comment)) . $this->comment;
+				break;
+			case 'count2' :
+				$write .= "PK\x05\x06\x00\x00\x00\x00" .
+					pack("vvVVv", $this->count, $this->count + 1,
+					$this->offset, strlen($this->start),
+					strlen($this->comment)) . $this->comment;
+				break;
+			case 'cdir_len' :
+				$write .= "PK\x05\x06\x00\x00\x00\x00" .
+					pack("vvVVv", $this->count, $this->count,
+					$this->offset, strlen($this->start) - 3,
+					strlen($this->comment)) . $this->comment;
+				break;
+			case 'cdir_offset' :
+				$write .= "PK\x05\x06\x00\x00\x00\x00" .
+					pack("vvVVv", $this->count, $this->count,
+					$this->offset + 1, strlen($this->start),
+					strlen($this->comment)) . $this->comment;
+				break;
+			case 'comment' :
+				$write .= "PK\x05\x06\x00\x00\x00\x00" .
+					pack("vvVVv", $this->count, $this->count,
+					strlen($this->start), $this->offset + 1,
+					strlen($this->comment) + 1) . $this->comment;
+				break;
+		}
+		file_put_contents($zipfile, $write);
+	}
+}
+?>
\ No newline at end of file