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Diffstat (limited to '')
-rwxr-xr-x | test/files/generate-gzip-tests.php | 322 |
1 files changed, 322 insertions, 0 deletions
diff --git a/test/files/generate-gzip-tests.php b/test/files/generate-gzip-tests.php new file mode 100755 index 0000000..021c436 --- /dev/null +++ b/test/files/generate-gzip-tests.php @@ -0,0 +1,322 @@ +#!/usr/bin/env php +<? + +/* +Copyright (c) 2009-2010 Open Information Security Foundation +Copyright (c) 2010-2013 Qualys, Inc. +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + +- Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + +- Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + +- Neither the name of the Qualys, Inc. nor the names of its + contributors may be used to endorse or promote products derived from + this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ + + +/* + +ZLIB Compressed Data Format Specification version 3.3 +http://www.ietf.org/rfc/rfc1950.txt + +DEFLATE Compressed Data Format Specification version 1.3 +http://www.ietf.org/rfc/rfc1951.txt + +GZIP file format specification version 4.3 +http://www.ietf.org/rfc/rfc1952.txt + +*/ + +class GzipTest { + + private $compressionMethod = 0x08; + + private $forcedFlags = false; + + private $filename = false; + + private $comment = false; + + private $extra = false; + + private $textFlag = false; + + private $useHeaderCrc = false; + + private $headerCrc = false; + + private $crc32 = false; + + private $isize = false; + + private $data = "The five boxing wizards jump quickly."; + + private $xfl = 0; + + public function setCompressionMethod($m) { + $this->compressionMethod = $m; + } + + public function setCrc32($crc) { + $this->crc32 = $crc; + } + + public function setInputSize($len) { + $this->isize = $len; + } + + public function setXfl($xfl) { + $this->xfl = $xfl; + } + + public function setFilename($filename) { + $this->filename = $filename; + } + + public function setComment($comment) { + $this->comment = $comment; + } + + public function setExtra($extra) { + $this->extra = $extra; + } + + public function setTextFlag($b) { + $this->textFlag = $b; + } + + public function useHeaderCrc($b) { + $this->useHeaderCrc = $b; + } + + public function setHeaderCrc($crc) { + $this->headerCrc = $crc; + } + + public function setFlags($f) { + $this->forcedFlags = $f; + } + + public function getFlags() { + if ($this->forcedFlags !== false) { + return $this->forcedFlags; + } + + $flags = 0; + + // FTEXT + if ($this->textFlag) { + $flags = $flags | 0x01; + } + + // FHCRC + if ($this->useHeaderCrc) { + $flags = $flags | 0x02; + } + + // FEXTRA + if ($this->extra !== false) { + $flags = $flags | 0x04; + } + + // FNAME + if ($this->filename !== false) { + $flags = $flags | 0x08; + } + + // FCOMMENT + if ($this->comment !== false) { + $flags = $flags | 0x16; + } + + return $flags; + } + + public function setData($data) { + $this->data = $data; + } + + public function writeTo($filename) { + $fp = fopen($filename, "w+"); + $this->write($fp); + fclose($fp); + } + + public function write($fp) { + $header = ""; + + // header (ID1 + ID2) + $header .= "\x1f\x8b"; + + // compression method (CM) + $header .= pack("C", $this->compressionMethod); + + // flags (FLG) + $header .= pack("C", $this->getFlags()); + + // mtime (MTIME) + $header .= "\x9c\x54\xf4\x50"; + + // extra flags (XFL) + $header .= pack("C", $this->xfl); + + // operating system (OS) + $header .= "\xff"; + + // FEXTRA + if ($this->extra !== false) { + $header .= pack("v", strlen($this->extra)); + $header .= $this->extra; + } + + // FNAME + if ($this->filename !== false) { + $header .= $this->filename; + $header .= "\x00"; + } + + // FCOMMENT + if ($this->comment !== false) { + $header .= $this->comment; + $header .= "\x00"; + } + + fwrite($fp, $header); + + // FHCRC + if ($this->useHeaderCrc) { + if ($this->headerCrc !== false) { + // "The CRC16 consists of the two least significant bytes of the CRC32 [...]" + fwrite($fp, pack("v", crc32($header))); + } else { + fwrite($fp, pack("v", $this->headerCrc)); + } + } + + // compressed blocks + $compressedData = gzcompress($this->data); + // The gzcompress() function does not produce output that's fully compatible with gzip, + // so we need to strip out the extra data: remove 2 bytes from the beginning + // (CMF and FLG) and 4 bytes from the end (Adler CRC). + $compressedData = substr($compressedData, 2, strlen($compressedData) - 6); + fwrite($fp, $compressedData); + + // CRC32 + if ($this->crc32 === false) { + fwrite($fp, pack("V", crc32($this->data))); + } else { + fwrite($fp, pack("V", $this->crc32)); + } + + // uncompressed size (ISIZE) + if ($this->isize === false) { + fwrite($fp, pack("V", strlen($this->data))); + } else { + fwrite($fp, pack("V", $this->isize)); + } + } +} + +// 01: minimal file +$gz = new GzipTest(); +$gz->writeTo("gztest-01-minimal.gz"); + +// 02: with FNAME +$gz = new GzipTest(); +$gz->setFilename("file.txt"); +$gz->writeTo("gztest-02-fname.gz"); + +// 03: with FCOMMENT +$gz = new GzipTest(); +$gz->setComment("COMMENT"); +$gz->writeTo("gztest-03-fcomment.gz"); + +// 04: with FHCRC +$gz = new GzipTest(); +$gz->useHeaderCrc(true); +$gz->writeTo("gztest-04-fhcrc.gz"); + +// 05: with FEXTRA +$gz = new GzipTest(); +$gz->setExtra("EXTRA"); +$gz->writeTo("gztest-05-fextra.gz"); + +// 06: with FTEXT +$gz = new GzipTest(); +$gz->setTextFlag(true); +$gz->writeTo("gztest-06-ftext.gz"); + +// 07: with FRESERVED1 +$gz = new GzipTest(); +$gz->setFlags($gz->getFlags() | 0x20); +$gz->writeTo("gztest-07-freserved1.gz"); + +// 08: with FRESERVED2 +$gz = new GzipTest(); +$gz->setFlags($gz->getFlags() | 0x40); +$gz->writeTo("gztest-08-freserved2.gz"); + +// 09: with FRESERVED3 +$gz = new GzipTest(); +$gz->setFlags($gz->getFlags() | 0x80); +$gz->writeTo("gztest-09-freserved3.gz"); + +// 10: Two parts (compressed streams) +$gz = new GzipTest(); +$fp = fopen("gztest-10-multipart.gz", "w+"); +$gz->setFilename("file1.txt"); +$gz->write($fp); +$gz->setData("The quick brown fox jumps over the lazy dog."); +$gz->setFilename("file2.txt"); +$gz->write($fp); +fclose($fp); + +// 11: Invalid compression method +$gz = new GzipTest(); +$gz->setCompressionMethod(0x07); +$gz->writeTo("gztest-11-invalid-method.gz"); + +// 12: Invalid CRC32 +$gz = new GzipTest(); +$gz->setCrc32(0xffffffff); +$gz->writeTo("gztest-12-invalid-crc32.gz"); + +// 13: Invalid ISIZE +$gz = new GzipTest(); +$gz->setData("Grumpy Wizards make toxic brew for the Evil Queen and Jack."); +$gz->setInputSize(0x10); +$gz->writeTo("gztest-13-invalid-isize.gz"); + +// 14: Invalid extra flags (XFL) +$gz = new GzipTest(); +$gz->setXfl(0xff); +$gz->writeTo("gztest-14-invalid-xfl.gz"); + +// 15: Invalid header CRC (FHCRC) +$gz = new GzipTest(); +$gz->useHeaderCrc(true); +$gz->setHeaderCrc(0xffff); +$gz->writeTo("gztest-15-invalid-fhcrc.gz"); + +?> |