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316 lines
10 KiB
PHP
316 lines
10 KiB
PHP
<?php
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namespace Minify\Test;
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use HTTP_Encoder;
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class HTTPEncoderTest extends TestCase
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{
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/**
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* @dataProvider ToIe6DataProvider
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* @preserveGlobals
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*/
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public function testToIe6($ua, $ae, $exp, $desc)
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{
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HTTP_Encoder::$encodeToIe6 = true;
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$_SERVER['HTTP_USER_AGENT'] = $ua;
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$_SERVER['HTTP_ACCEPT_ENCODING'] = $ae;
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$ret = HTTP_Encoder::getAcceptedEncoding();
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$this->assertSame($exp, $ret, $desc);
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}
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public function ToIe6DataProvider()
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{
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return array(
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array(
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'ua' => 'Any browser',
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'ae' => 'compress, x-gzip',
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'exp' => array('gzip', 'x-gzip'),
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'desc' => 'recognize "x-gzip" as gzip',
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),
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array(
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'ua' => 'Any browser',
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'ae' => 'compress, x-gzip;q=0.5',
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'exp' => array('gzip', 'x-gzip'),
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'desc' => 'gzip w/ non-zero q',
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),
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array(
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'ua' => 'Any browser',
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'ae' => 'compress, x-gzip;q=0',
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'exp' => array('compress', 'compress'),
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'desc' => 'gzip w/ zero q',
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),
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array(
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'ua' => 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)',
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'ae' => 'gzip, deflate',
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'exp' => array('', ''),
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'desc' => 'IE6 w/o "enhanced security"',
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),
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array(
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'ua' => 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)',
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'ae' => 'gzip, deflate',
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'exp' => array('gzip', 'gzip'),
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'desc' => 'IE6 w/ "enhanced security"',
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),
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array(
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'ua' => 'Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 5.01)',
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'ae' => 'gzip, deflate',
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'exp' => array('', ''),
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'desc' => 'IE5.5',
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),
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array(
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'ua' => 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; en) Opera 9.25',
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'ae' => 'gzip,deflate',
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'exp' => array('gzip', 'gzip'),
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'desc' => 'Opera identifying as IE6',
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),
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);
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}
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/**
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* @dataProvider EncodeNonIeDataProvider
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*/
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public function testEncodeNonIe($ua, $ae, $exp, $desc)
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{
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HTTP_Encoder::$encodeToIe6 = false;
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$_SERVER['HTTP_USER_AGENT'] = $ua;
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$_SERVER['HTTP_ACCEPT_ENCODING'] = $ae;
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$ret = HTTP_Encoder::getAcceptedEncoding();
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$this->assertSame($exp, $ret, $desc);
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}
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public function EncodeNonIeDataProvider()
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{
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return array(
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array(
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'ua' => 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)',
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'ae' => 'gzip, deflate',
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'exp' => array('', ''),
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'desc' => 'IE6 w/ "enhanced security"',
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)
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);
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}
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public function testZlibEncode()
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{
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$have_zlib = function_exists('gzdeflate');
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if (!$have_zlib) {
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$this->markTestSkipped('Zlib support is not present in PHP. Encoding cannot be performed/tested.');
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}
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// test compression of varied content (HTML,JS, & CSS)
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$variedContent = file_get_contents(self::$test_files . '/html/before.html')
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. file_get_contents(self::$test_files . '/css/subsilver.css')
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. file_get_contents(self::$test_files . '/js/jquery-1.2.3.js');
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$variedLength = $this->countBytes($variedContent);
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$encodingTests = array(
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array('method' => 'deflate', 'inv' => 'gzinflate', 'exp' => 32268),
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array('method' => 'gzip', 'inv' => __NAMESPACE__ . '\\_gzdecode', 'exp' => 32286),
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array('method' => 'compress', 'inv' => 'gzuncompress', 'exp' => 32325),
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);
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foreach ($encodingTests as $test) {
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$e = new HTTP_Encoder(array(
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'content' => $variedContent,
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'method' => $test['method'],
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));
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$e->encode(9);
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$ret = $this->countBytes($e->getContent());
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// test uncompression
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$roundTrip = call_user_func($test['inv'], $e->getContent());
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$desc = "{$test['method']} : uncompress possible";
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$this->assertSame($variedContent, $roundTrip, $desc);
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// test expected compressed size
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$desc = "{$test['method']} : compressed to "
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. sprintf('%4.2f%% of original', $ret / $variedLength * 100);
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$this->assertLessThan(100, abs($ret - $test['exp']), $desc);
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}
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HTTP_Encoder::$encodeToIe6 = true;
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$_SERVER['HTTP_ACCEPT_ENCODING'] = 'identity';
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$he = new HTTP_Encoder(array('content' => 'Hello'));
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$he->encode();
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$headers = $he->getHeaders();
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$this->assertTrue(isset($headers['Vary']), 'Vary always sent to good browsers');
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$_SERVER['HTTP_USER_AGENT'] = 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)';
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$he = new HTTP_Encoder(array('content' => 'Hello'));
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$he->encode();
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$headers = $he->getHeaders();
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$this->assertTrue(!isset($headers['Vary']), 'Vary not sent to bad IE (Issue 126)');
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}
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}
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function _gzdecode($data)
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{
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$filename = $error = '';
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return _phpman_gzdecode($data, $filename, $error);
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}
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// http://www.php.net/manual/en/function.gzdecode.php#82930
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function _phpman_gzdecode($data, &$filename='', &$error='', $maxlength=null)
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{
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$mbIntEnc = null;
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$hasMbOverload = (function_exists('mb_strlen')
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&& (ini_get('mbstring.func_overload') !== '')
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&& ((int)ini_get('mbstring.func_overload') & 2));
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if ($hasMbOverload) {
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$mbIntEnc = mb_internal_encoding();
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mb_internal_encoding('8bit');
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}
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$len = strlen($data);
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if ($len < 18 || strcmp(substr($data,0,2),"\x1f\x8b")) {
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$error = "Not in GZIP format.";
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if ($mbIntEnc !== null) {
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mb_internal_encoding($mbIntEnc);
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}
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return null; // Not GZIP format (See RFC 1952)
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}
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$method = ord(substr($data,2,1)); // Compression method
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$flags = ord(substr($data,3,1)); // Flags
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if ($flags & 31 != $flags) {
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$error = "Reserved bits not allowed.";
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if ($mbIntEnc !== null) {
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mb_internal_encoding($mbIntEnc);
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}
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return null;
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}
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// NOTE: $mtime may be negative (PHP integer limitations)
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$mtime = unpack("V", substr($data,4,4));
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$mtime = $mtime[1];
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$xfl = substr($data,8,1);
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$os = substr($data,8,1);
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$headerlen = 10;
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$extralen = 0;
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$extra = "";
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if ($flags & 4) {
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// 2-byte length prefixed EXTRA data in header
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if ($len - $headerlen - 2 < 8) {
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if ($mbIntEnc !== null) {
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mb_internal_encoding($mbIntEnc);
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}
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return false; // invalid
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}
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$extralen = unpack("v",substr($data,8,2));
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$extralen = $extralen[1];
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if ($len - $headerlen - 2 - $extralen < 8) {
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if ($mbIntEnc !== null) {
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mb_internal_encoding($mbIntEnc);
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}
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return false; // invalid
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}
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$extra = substr($data,10,$extralen);
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$headerlen += 2 + $extralen;
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}
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$filenamelen = 0;
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$filename = "";
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if ($flags & 8) {
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// C-style string
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if ($len - $headerlen - 1 < 8) {
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if ($mbIntEnc !== null) {
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mb_internal_encoding($mbIntEnc);
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}
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return false; // invalid
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}
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$filenamelen = strpos(substr($data,$headerlen),chr(0));
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if ($filenamelen === false || $len - $headerlen - $filenamelen - 1 < 8) {
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if ($mbIntEnc !== null) {
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mb_internal_encoding($mbIntEnc);
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}
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return false; // invalid
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}
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$filename = substr($data,$headerlen,$filenamelen);
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$headerlen += $filenamelen + 1;
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}
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$commentlen = 0;
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$comment = "";
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if ($flags & 16) {
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// C-style string COMMENT data in header
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if ($len - $headerlen - 1 < 8) {
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if ($mbIntEnc !== null) {
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mb_internal_encoding($mbIntEnc);
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}
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return false; // invalid
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}
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$commentlen = strpos(substr($data,$headerlen),chr(0));
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if ($commentlen === false || $len - $headerlen - $commentlen - 1 < 8) {
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if ($mbIntEnc !== null) {
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mb_internal_encoding($mbIntEnc);
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}
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return false; // Invalid header format
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}
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$comment = substr($data,$headerlen,$commentlen);
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$headerlen += $commentlen + 1;
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}
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$headercrc = "";
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if ($flags & 2) {
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// 2-bytes (lowest order) of CRC32 on header present
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if ($len - $headerlen - 2 < 8) {
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if ($mbIntEnc !== null) {
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mb_internal_encoding($mbIntEnc);
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}
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return false; // invalid
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}
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$calccrc = crc32(substr($data,0,$headerlen)) & 0xffff;
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$headercrc = unpack("v", substr($data,$headerlen,2));
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$headercrc = $headercrc[1];
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if ($headercrc != $calccrc) {
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$error = "Header checksum failed.";
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if ($mbIntEnc !== null) {
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mb_internal_encoding($mbIntEnc);
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}
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return false; // Bad header CRC
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}
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$headerlen += 2;
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}
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// GZIP FOOTER
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$datacrc = unpack("V",substr($data,-8,4));
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$datacrc = sprintf('%u',$datacrc[1] & 0xFFFFFFFF);
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$isize = unpack("V",substr($data,-4));
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$isize = $isize[1];
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// decompression:
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$bodylen = $len-$headerlen-8;
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if ($bodylen < 1) {
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// IMPLEMENTATION BUG!
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if ($mbIntEnc !== null) {
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mb_internal_encoding($mbIntEnc);
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}
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return null;
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}
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$body = substr($data,$headerlen,$bodylen);
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$data = "";
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if ($bodylen > 0) {
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switch ($method) {
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case 8:
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// Currently the only supported compression method:
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$data = gzinflate($body,$maxlength);
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break;
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default:
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$error = "Unknown compression method.";
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if ($mbIntEnc !== null) {
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mb_internal_encoding($mbIntEnc);
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}
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return false;
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}
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} // zero-byte body content is allowed
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// Verifiy CRC32
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$crc = sprintf("%u",crc32($data));
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$crcOK = $crc == $datacrc;
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$lenOK = $isize == strlen($data);
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if (!$lenOK || !$crcOK) {
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$error = ( $lenOK ? '' : 'Length check FAILED. ') . ( $crcOK ? '' : 'Checksum FAILED.');
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$ret = false;
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}
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$ret = $data;
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if ($mbIntEnc !== null) {
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mb_internal_encoding($mbIntEnc);
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}
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return $ret;
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} |