mirror of
https://github.com/mrclay/minify.git
synced 2025-01-17 21:28:14 +01:00
312 lines
10 KiB
PHP
312 lines
10 KiB
PHP
<?php
|
|
|
|
class HTTPEncoderTest extends TestCase
|
|
{
|
|
/**
|
|
* @dataProvider testToIe6Data
|
|
* @preserveGlobals
|
|
*/
|
|
public function testToIe6($ua, $ae, $exp, $desc)
|
|
{
|
|
HTTP_Encoder::$encodeToIe6 = true;
|
|
|
|
$_SERVER['HTTP_USER_AGENT'] = $ua;
|
|
$_SERVER['HTTP_ACCEPT_ENCODING'] = $ae;
|
|
$ret = HTTP_Encoder::getAcceptedEncoding();
|
|
$this->assertSame($exp, $ret, $desc);
|
|
}
|
|
|
|
public function testToIe6Data()
|
|
{
|
|
return array(
|
|
array(
|
|
'ua' => 'Any browser',
|
|
'ae' => 'compress, x-gzip',
|
|
'exp' => array('gzip', 'x-gzip'),
|
|
'desc' => 'recognize "x-gzip" as gzip',
|
|
),
|
|
array(
|
|
'ua' => 'Any browser',
|
|
'ae' => 'compress, x-gzip;q=0.5',
|
|
'exp' => array('gzip', 'x-gzip'),
|
|
'desc' => 'gzip w/ non-zero q',
|
|
),
|
|
array(
|
|
'ua' => 'Any browser',
|
|
'ae' => 'compress, x-gzip;q=0',
|
|
'exp' => array('compress', 'compress'),
|
|
'desc' => 'gzip w/ zero q',
|
|
),
|
|
array(
|
|
'ua' => 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)',
|
|
'ae' => 'gzip, deflate',
|
|
'exp' => array('', ''),
|
|
'desc' => 'IE6 w/o "enhanced security"',
|
|
),
|
|
array(
|
|
'ua' => 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)',
|
|
'ae' => 'gzip, deflate',
|
|
'exp' => array('gzip', 'gzip'),
|
|
'desc' => 'IE6 w/ "enhanced security"',
|
|
),
|
|
array(
|
|
'ua' => 'Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 5.01)',
|
|
'ae' => 'gzip, deflate',
|
|
'exp' => array('', ''),
|
|
'desc' => 'IE5.5',
|
|
),
|
|
array(
|
|
'ua' => 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; en) Opera 9.25',
|
|
'ae' => 'gzip,deflate',
|
|
'exp' => array('gzip', 'gzip'),
|
|
'desc' => 'Opera identifying as IE6',
|
|
),
|
|
);
|
|
}
|
|
|
|
/**
|
|
* @dataProvider testEncodeNonIeData
|
|
*/
|
|
public function testEncodeNonIe($ua, $ae, $exp, $desc)
|
|
{
|
|
HTTP_Encoder::$encodeToIe6 = false;
|
|
|
|
$_SERVER['HTTP_USER_AGENT'] = $ua;
|
|
$_SERVER['HTTP_ACCEPT_ENCODING'] = $ae;
|
|
$ret = HTTP_Encoder::getAcceptedEncoding();
|
|
$this->assertSame($exp, $ret, $desc);
|
|
}
|
|
|
|
public function testEncodeNonIeData()
|
|
{
|
|
return array(
|
|
array(
|
|
'ua' => 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)',
|
|
'ae' => 'gzip, deflate',
|
|
'exp' => array('', ''),
|
|
'desc' => 'IE6 w/ "enhanced security"',
|
|
)
|
|
);
|
|
}
|
|
|
|
public function testZlibEncode()
|
|
{
|
|
$have_zlib = function_exists('gzdeflate');
|
|
if (!$have_zlib) {
|
|
$this->markTestSkipped('Zlib support is not present in PHP. Encoding cannot be performed/tested.');
|
|
}
|
|
|
|
// test compression of varied content (HTML,JS, & CSS)
|
|
$variedContent = file_get_contents(self::$test_files . '/html/before.html')
|
|
. file_get_contents(self::$test_files . '/css/subsilver.css')
|
|
. file_get_contents(self::$test_files . '/js/jquery-1.2.3.js');
|
|
$variedLength = $this->countBytes($variedContent);
|
|
|
|
$encodingTests = array(
|
|
array('method' => 'deflate', 'inv' => 'gzinflate', 'exp' => 32268),
|
|
array('method' => 'gzip', 'inv' => '_gzdecode', 'exp' => 32286),
|
|
array('method' => 'compress', 'inv' => 'gzuncompress', 'exp' => 32325),
|
|
);
|
|
|
|
foreach ($encodingTests as $test) {
|
|
$e = new HTTP_Encoder(array(
|
|
'content' => $variedContent,
|
|
'method' => $test['method'],
|
|
));
|
|
$e->encode(9);
|
|
$ret = $this->countBytes($e->getContent());
|
|
|
|
// test uncompression
|
|
$roundTrip = @call_user_func($test['inv'], $e->getContent());
|
|
$desc = "{$test['method']} : uncompress possible";
|
|
$this->assertSame($variedContent, $roundTrip, $desc);
|
|
|
|
// test expected compressed size
|
|
$desc = "{$test['method']} : compressed to "
|
|
. sprintf('%4.2f%% of original', $ret / $variedLength * 100);
|
|
$this->assertLessThan(100, abs($ret - $test['exp']), $desc);
|
|
}
|
|
|
|
HTTP_Encoder::$encodeToIe6 = true;
|
|
$_SERVER['HTTP_ACCEPT_ENCODING'] = 'identity';
|
|
$he = new HTTP_Encoder(array('content' => 'Hello'));
|
|
$he->encode();
|
|
$headers = $he->getHeaders();
|
|
$this->assertTrue(isset($headers['Vary']), 'Vary always sent to good browsers');
|
|
|
|
$_SERVER['HTTP_USER_AGENT'] = 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)';
|
|
$he = new HTTP_Encoder(array('content' => 'Hello'));
|
|
$he->encode();
|
|
$headers = $he->getHeaders();
|
|
$this->assertTrue(!isset($headers['Vary']), 'Vary not sent to bad IE (Issue 126)');
|
|
}
|
|
}
|
|
|
|
function _gzdecode($data)
|
|
{
|
|
$filename = $error = '';
|
|
return _phpman_gzdecode($data, $filename, $error);
|
|
}
|
|
|
|
// http://www.php.net/manual/en/function.gzdecode.php#82930
|
|
function _phpman_gzdecode($data, &$filename='', &$error='', $maxlength=null)
|
|
{
|
|
$mbIntEnc = null;
|
|
$hasMbOverload = (function_exists('mb_strlen')
|
|
&& (ini_get('mbstring.func_overload') !== '')
|
|
&& ((int)ini_get('mbstring.func_overload') & 2));
|
|
if ($hasMbOverload) {
|
|
$mbIntEnc = mb_internal_encoding();
|
|
mb_internal_encoding('8bit');
|
|
}
|
|
|
|
|
|
$len = strlen($data);
|
|
if ($len < 18 || strcmp(substr($data,0,2),"\x1f\x8b")) {
|
|
$error = "Not in GZIP format.";
|
|
if ($mbIntEnc !== null) {
|
|
mb_internal_encoding($mbIntEnc);
|
|
}
|
|
return null; // Not GZIP format (See RFC 1952)
|
|
}
|
|
$method = ord(substr($data,2,1)); // Compression method
|
|
$flags = ord(substr($data,3,1)); // Flags
|
|
if ($flags & 31 != $flags) {
|
|
$error = "Reserved bits not allowed.";
|
|
if ($mbIntEnc !== null) {
|
|
mb_internal_encoding($mbIntEnc);
|
|
}
|
|
return null;
|
|
}
|
|
// NOTE: $mtime may be negative (PHP integer limitations)
|
|
$mtime = unpack("V", substr($data,4,4));
|
|
$mtime = $mtime[1];
|
|
$xfl = substr($data,8,1);
|
|
$os = substr($data,8,1);
|
|
$headerlen = 10;
|
|
$extralen = 0;
|
|
$extra = "";
|
|
if ($flags & 4) {
|
|
// 2-byte length prefixed EXTRA data in header
|
|
if ($len - $headerlen - 2 < 8) {
|
|
if ($mbIntEnc !== null) {
|
|
mb_internal_encoding($mbIntEnc);
|
|
}
|
|
return false; // invalid
|
|
}
|
|
$extralen = unpack("v",substr($data,8,2));
|
|
$extralen = $extralen[1];
|
|
if ($len - $headerlen - 2 - $extralen < 8) {
|
|
if ($mbIntEnc !== null) {
|
|
mb_internal_encoding($mbIntEnc);
|
|
}
|
|
return false; // invalid
|
|
}
|
|
$extra = substr($data,10,$extralen);
|
|
$headerlen += 2 + $extralen;
|
|
}
|
|
$filenamelen = 0;
|
|
$filename = "";
|
|
if ($flags & 8) {
|
|
// C-style string
|
|
if ($len - $headerlen - 1 < 8) {
|
|
if ($mbIntEnc !== null) {
|
|
mb_internal_encoding($mbIntEnc);
|
|
}
|
|
return false; // invalid
|
|
}
|
|
$filenamelen = strpos(substr($data,$headerlen),chr(0));
|
|
if ($filenamelen === false || $len - $headerlen - $filenamelen - 1 < 8) {
|
|
if ($mbIntEnc !== null) {
|
|
mb_internal_encoding($mbIntEnc);
|
|
}
|
|
return false; // invalid
|
|
}
|
|
$filename = substr($data,$headerlen,$filenamelen);
|
|
$headerlen += $filenamelen + 1;
|
|
}
|
|
$commentlen = 0;
|
|
$comment = "";
|
|
if ($flags & 16) {
|
|
// C-style string COMMENT data in header
|
|
if ($len - $headerlen - 1 < 8) {
|
|
if ($mbIntEnc !== null) {
|
|
mb_internal_encoding($mbIntEnc);
|
|
}
|
|
return false; // invalid
|
|
}
|
|
$commentlen = strpos(substr($data,$headerlen),chr(0));
|
|
if ($commentlen === false || $len - $headerlen - $commentlen - 1 < 8) {
|
|
if ($mbIntEnc !== null) {
|
|
mb_internal_encoding($mbIntEnc);
|
|
}
|
|
return false; // Invalid header format
|
|
}
|
|
$comment = substr($data,$headerlen,$commentlen);
|
|
$headerlen += $commentlen + 1;
|
|
}
|
|
$headercrc = "";
|
|
if ($flags & 2) {
|
|
// 2-bytes (lowest order) of CRC32 on header present
|
|
if ($len - $headerlen - 2 < 8) {
|
|
if ($mbIntEnc !== null) {
|
|
mb_internal_encoding($mbIntEnc);
|
|
}
|
|
return false; // invalid
|
|
}
|
|
$calccrc = crc32(substr($data,0,$headerlen)) & 0xffff;
|
|
$headercrc = unpack("v", substr($data,$headerlen,2));
|
|
$headercrc = $headercrc[1];
|
|
if ($headercrc != $calccrc) {
|
|
$error = "Header checksum failed.";
|
|
if ($mbIntEnc !== null) {
|
|
mb_internal_encoding($mbIntEnc);
|
|
}
|
|
return false; // Bad header CRC
|
|
}
|
|
$headerlen += 2;
|
|
}
|
|
// GZIP FOOTER
|
|
$datacrc = unpack("V",substr($data,-8,4));
|
|
$datacrc = sprintf('%u',$datacrc[1] & 0xFFFFFFFF);
|
|
$isize = unpack("V",substr($data,-4));
|
|
$isize = $isize[1];
|
|
// decompression:
|
|
$bodylen = $len-$headerlen-8;
|
|
if ($bodylen < 1) {
|
|
// IMPLEMENTATION BUG!
|
|
if ($mbIntEnc !== null) {
|
|
mb_internal_encoding($mbIntEnc);
|
|
}
|
|
return null;
|
|
}
|
|
$body = substr($data,$headerlen,$bodylen);
|
|
$data = "";
|
|
if ($bodylen > 0) {
|
|
switch ($method) {
|
|
case 8:
|
|
// Currently the only supported compression method:
|
|
$data = gzinflate($body,$maxlength);
|
|
break;
|
|
default:
|
|
$error = "Unknown compression method.";
|
|
if ($mbIntEnc !== null) {
|
|
mb_internal_encoding($mbIntEnc);
|
|
}
|
|
return false;
|
|
}
|
|
} // zero-byte body content is allowed
|
|
// Verifiy CRC32
|
|
$crc = sprintf("%u",crc32($data));
|
|
$crcOK = $crc == $datacrc;
|
|
$lenOK = $isize == strlen($data);
|
|
if (!$lenOK || !$crcOK) {
|
|
$error = ( $lenOK ? '' : 'Length check FAILED. ') . ( $crcOK ? '' : 'Checksum FAILED.');
|
|
$ret = false;
|
|
}
|
|
$ret = $data;
|
|
if ($mbIntEnc !== null) {
|
|
mb_internal_encoding($mbIntEnc);
|
|
}
|
|
return $ret;
|
|
} |