Revert "Rebuilt HTTPClient class as an extension of PEAR HTTP_Request2 package, adding redirect handling and convenience functions."

Going to restructure a little more before finalizing this...

This reverts commit fa37967858.
This commit is contained in:
Brion Vibber
2009-11-02 06:56:31 -08:00
parent d8e2d76ba9
commit b22fc5b74a
29 changed files with 672 additions and 4244 deletions

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<?php
/**
* Base class for HTTP_Request2 adapters
*
* PHP version 5
*
* LICENSE:
*
* Copyright (c) 2008, 2009, Alexey Borzov <avb@php.net>
* 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.
* * The names of the authors may not 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 OWNER 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.
*
* @category HTTP
* @package HTTP_Request2
* @author Alexey Borzov <avb@php.net>
* @license http://opensource.org/licenses/bsd-license.php New BSD License
* @version CVS: $Id: Adapter.php 274684 2009-01-26 23:07:27Z avb $
* @link http://pear.php.net/package/HTTP_Request2
*/
/**
* Class representing a HTTP response
*/
require_once 'HTTP/Request2/Response.php';
/**
* Base class for HTTP_Request2 adapters
*
* HTTP_Request2 class itself only defines methods for aggregating the request
* data, all actual work of sending the request to the remote server and
* receiving its response is performed by adapters.
*
* @category HTTP
* @package HTTP_Request2
* @author Alexey Borzov <avb@php.net>
* @version Release: 0.4.1
*/
abstract class HTTP_Request2_Adapter
{
/**
* A list of methods that MUST NOT have a request body, per RFC 2616
* @var array
*/
protected static $bodyDisallowed = array('TRACE');
/**
* Methods having defined semantics for request body
*
* Content-Length header (indicating that the body follows, section 4.3 of
* RFC 2616) will be sent for these methods even if no body was added
*
* @var array
* @link http://pear.php.net/bugs/bug.php?id=12900
* @link http://pear.php.net/bugs/bug.php?id=14740
*/
protected static $bodyRequired = array('POST', 'PUT');
/**
* Request being sent
* @var HTTP_Request2
*/
protected $request;
/**
* Request body
* @var string|resource|HTTP_Request2_MultipartBody
* @see HTTP_Request2::getBody()
*/
protected $requestBody;
/**
* Length of the request body
* @var integer
*/
protected $contentLength;
/**
* Sends request to the remote server and returns its response
*
* @param HTTP_Request2
* @return HTTP_Request2_Response
* @throws HTTP_Request2_Exception
*/
abstract public function sendRequest(HTTP_Request2 $request);
/**
* Calculates length of the request body, adds proper headers
*
* @param array associative array of request headers, this method will
* add proper 'Content-Length' and 'Content-Type' headers
* to this array (or remove them if not needed)
*/
protected function calculateRequestLength(&$headers)
{
$this->requestBody = $this->request->getBody();
if (is_string($this->requestBody)) {
$this->contentLength = strlen($this->requestBody);
} elseif (is_resource($this->requestBody)) {
$stat = fstat($this->requestBody);
$this->contentLength = $stat['size'];
rewind($this->requestBody);
} else {
$this->contentLength = $this->requestBody->getLength();
$headers['content-type'] = 'multipart/form-data; boundary=' .
$this->requestBody->getBoundary();
$this->requestBody->rewind();
}
if (in_array($this->request->getMethod(), self::$bodyDisallowed) ||
0 == $this->contentLength
) {
unset($headers['content-type']);
// No body: send a Content-Length header nonetheless (request #12900),
// but do that only for methods that require a body (bug #14740)
if (in_array($this->request->getMethod(), self::$bodyRequired)) {
$headers['content-length'] = 0;
} else {
unset($headers['content-length']);
}
} else {
if (empty($headers['content-type'])) {
$headers['content-type'] = 'application/x-www-form-urlencoded';
}
$headers['content-length'] = $this->contentLength;
}
}
}
?>

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@@ -1,383 +0,0 @@
<?php
/**
* Adapter for HTTP_Request2 wrapping around cURL extension
*
* PHP version 5
*
* LICENSE:
*
* Copyright (c) 2008, 2009, Alexey Borzov <avb@php.net>
* 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.
* * The names of the authors may not 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 OWNER 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.
*
* @category HTTP
* @package HTTP_Request2
* @author Alexey Borzov <avb@php.net>
* @license http://opensource.org/licenses/bsd-license.php New BSD License
* @version CVS: $Id: Curl.php 278226 2009-04-03 21:32:48Z avb $
* @link http://pear.php.net/package/HTTP_Request2
*/
/**
* Base class for HTTP_Request2 adapters
*/
require_once 'HTTP/Request2/Adapter.php';
/**
* Adapter for HTTP_Request2 wrapping around cURL extension
*
* @category HTTP
* @package HTTP_Request2
* @author Alexey Borzov <avb@php.net>
* @version Release: 0.4.1
*/
class HTTP_Request2_Adapter_Curl extends HTTP_Request2_Adapter
{
/**
* Mapping of header names to cURL options
* @var array
*/
protected static $headerMap = array(
'accept-encoding' => CURLOPT_ENCODING,
'cookie' => CURLOPT_COOKIE,
'referer' => CURLOPT_REFERER,
'user-agent' => CURLOPT_USERAGENT
);
/**
* Mapping of SSL context options to cURL options
* @var array
*/
protected static $sslContextMap = array(
'ssl_verify_peer' => CURLOPT_SSL_VERIFYPEER,
'ssl_cafile' => CURLOPT_CAINFO,
'ssl_capath' => CURLOPT_CAPATH,
'ssl_local_cert' => CURLOPT_SSLCERT,
'ssl_passphrase' => CURLOPT_SSLCERTPASSWD
);
/**
* Response being received
* @var HTTP_Request2_Response
*/
protected $response;
/**
* Whether 'sentHeaders' event was sent to observers
* @var boolean
*/
protected $eventSentHeaders = false;
/**
* Whether 'receivedHeaders' event was sent to observers
* @var boolean
*/
protected $eventReceivedHeaders = false;
/**
* Position within request body
* @var integer
* @see callbackReadBody()
*/
protected $position = 0;
/**
* Information about last transfer, as returned by curl_getinfo()
* @var array
*/
protected $lastInfo;
/**
* Sends request to the remote server and returns its response
*
* @param HTTP_Request2
* @return HTTP_Request2_Response
* @throws HTTP_Request2_Exception
*/
public function sendRequest(HTTP_Request2 $request)
{
if (!extension_loaded('curl')) {
throw new HTTP_Request2_Exception('cURL extension not available');
}
$this->request = $request;
$this->response = null;
$this->position = 0;
$this->eventSentHeaders = false;
$this->eventReceivedHeaders = false;
try {
if (false === curl_exec($ch = $this->createCurlHandle())) {
$errorMessage = 'Error sending request: #' . curl_errno($ch) .
' ' . curl_error($ch);
}
} catch (Exception $e) {
}
$this->lastInfo = curl_getinfo($ch);
curl_close($ch);
if (!empty($e)) {
throw $e;
} elseif (!empty($errorMessage)) {
throw new HTTP_Request2_Exception($errorMessage);
}
if (0 < $this->lastInfo['size_download']) {
$this->request->setLastEvent('receivedBody', $this->response);
}
return $this->response;
}
/**
* Returns information about last transfer
*
* @return array associative array as returned by curl_getinfo()
*/
public function getInfo()
{
return $this->lastInfo;
}
/**
* Creates a new cURL handle and populates it with data from the request
*
* @return resource a cURL handle, as created by curl_init()
* @throws HTTP_Request2_Exception
*/
protected function createCurlHandle()
{
$ch = curl_init();
curl_setopt_array($ch, array(
// setup callbacks
CURLOPT_READFUNCTION => array($this, 'callbackReadBody'),
CURLOPT_HEADERFUNCTION => array($this, 'callbackWriteHeader'),
CURLOPT_WRITEFUNCTION => array($this, 'callbackWriteBody'),
// disallow redirects
CURLOPT_FOLLOWLOCATION => false,
// buffer size
CURLOPT_BUFFERSIZE => $this->request->getConfig('buffer_size'),
// connection timeout
CURLOPT_CONNECTTIMEOUT => $this->request->getConfig('connect_timeout'),
// save full outgoing headers, in case someone is interested
CURLINFO_HEADER_OUT => true,
// request url
CURLOPT_URL => $this->request->getUrl()->getUrl()
));
// request timeout
if ($timeout = $this->request->getConfig('timeout')) {
curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
}
// set HTTP version
switch ($this->request->getConfig('protocol_version')) {
case '1.0':
curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0);
break;
case '1.1':
curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
}
// set request method
switch ($this->request->getMethod()) {
case HTTP_Request2::METHOD_GET:
curl_setopt($ch, CURLOPT_HTTPGET, true);
break;
case HTTP_Request2::METHOD_POST:
curl_setopt($ch, CURLOPT_POST, true);
break;
default:
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $this->request->getMethod());
}
// set proxy, if needed
if ($host = $this->request->getConfig('proxy_host')) {
if (!($port = $this->request->getConfig('proxy_port'))) {
throw new HTTP_Request2_Exception('Proxy port not provided');
}
curl_setopt($ch, CURLOPT_PROXY, $host . ':' . $port);
if ($user = $this->request->getConfig('proxy_user')) {
curl_setopt($ch, CURLOPT_PROXYUSERPWD, $user . ':' .
$this->request->getConfig('proxy_password'));
switch ($this->request->getConfig('proxy_auth_scheme')) {
case HTTP_Request2::AUTH_BASIC:
curl_setopt($ch, CURLOPT_PROXYAUTH, CURLAUTH_BASIC);
break;
case HTTP_Request2::AUTH_DIGEST:
curl_setopt($ch, CURLOPT_PROXYAUTH, CURLAUTH_DIGEST);
}
}
}
// set authentication data
if ($auth = $this->request->getAuth()) {
curl_setopt($ch, CURLOPT_USERPWD, $auth['user'] . ':' . $auth['password']);
switch ($auth['scheme']) {
case HTTP_Request2::AUTH_BASIC:
curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
break;
case HTTP_Request2::AUTH_DIGEST:
curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_DIGEST);
}
}
// set SSL options
if (0 == strcasecmp($this->request->getUrl()->getScheme(), 'https')) {
foreach ($this->request->getConfig() as $name => $value) {
if ('ssl_verify_host' == $name && null !== $value) {
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, $value? 2: 0);
} elseif (isset(self::$sslContextMap[$name]) && null !== $value) {
curl_setopt($ch, self::$sslContextMap[$name], $value);
}
}
}
$headers = $this->request->getHeaders();
// make cURL automagically send proper header
if (!isset($headers['accept-encoding'])) {
$headers['accept-encoding'] = '';
}
// set headers having special cURL keys
foreach (self::$headerMap as $name => $option) {
if (isset($headers[$name])) {
curl_setopt($ch, $option, $headers[$name]);
unset($headers[$name]);
}
}
$this->calculateRequestLength($headers);
// set headers not having special keys
$headersFmt = array();
foreach ($headers as $name => $value) {
$canonicalName = implode('-', array_map('ucfirst', explode('-', $name)));
$headersFmt[] = $canonicalName . ': ' . $value;
}
curl_setopt($ch, CURLOPT_HTTPHEADER, $headersFmt);
return $ch;
}
/**
* Callback function called by cURL for reading the request body
*
* @param resource cURL handle
* @param resource file descriptor (not used)
* @param integer maximum length of data to return
* @return string part of the request body, up to $length bytes
*/
protected function callbackReadBody($ch, $fd, $length)
{
if (!$this->eventSentHeaders) {
$this->request->setLastEvent(
'sentHeaders', curl_getinfo($ch, CURLINFO_HEADER_OUT)
);
$this->eventSentHeaders = true;
}
if (in_array($this->request->getMethod(), self::$bodyDisallowed) ||
0 == $this->contentLength || $this->position >= $this->contentLength
) {
return '';
}
if (is_string($this->requestBody)) {
$string = substr($this->requestBody, $this->position, $length);
} elseif (is_resource($this->requestBody)) {
$string = fread($this->requestBody, $length);
} else {
$string = $this->requestBody->read($length);
}
$this->request->setLastEvent('sentBodyPart', strlen($string));
$this->position += strlen($string);
return $string;
}
/**
* Callback function called by cURL for saving the response headers
*
* @param resource cURL handle
* @param string response header (with trailing CRLF)
* @return integer number of bytes saved
* @see HTTP_Request2_Response::parseHeaderLine()
*/
protected function callbackWriteHeader($ch, $string)
{
// we may receive a second set of headers if doing e.g. digest auth
if ($this->eventReceivedHeaders || !$this->eventSentHeaders) {
// don't bother with 100-Continue responses (bug #15785)
if (!$this->eventSentHeaders ||
$this->response->getStatus() >= 200
) {
$this->request->setLastEvent(
'sentHeaders', curl_getinfo($ch, CURLINFO_HEADER_OUT)
);
}
$this->eventSentHeaders = true;
// we'll need a new response object
if ($this->eventReceivedHeaders) {
$this->eventReceivedHeaders = false;
$this->response = null;
}
}
if (empty($this->response)) {
$this->response = new HTTP_Request2_Response($string, false);
} else {
$this->response->parseHeaderLine($string);
if ('' == trim($string)) {
// don't bother with 100-Continue responses (bug #15785)
if (200 <= $this->response->getStatus()) {
$this->request->setLastEvent('receivedHeaders', $this->response);
}
$this->eventReceivedHeaders = true;
}
}
return strlen($string);
}
/**
* Callback function called by cURL for saving the response body
*
* @param resource cURL handle (not used)
* @param string part of the response body
* @return integer number of bytes saved
* @see HTTP_Request2_Response::appendBody()
*/
protected function callbackWriteBody($ch, $string)
{
// cURL calls WRITEFUNCTION callback without calling HEADERFUNCTION if
// response doesn't start with proper HTTP status line (see bug #15716)
if (empty($this->response)) {
throw new HTTP_Request2_Exception("Malformed response: {$string}");
}
if ($this->request->getConfig('store_body')) {
$this->response->appendBody($string);
}
$this->request->setLastEvent('receivedBodyPart', $string);
return strlen($string);
}
}
?>

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<?php
/**
* Mock adapter intended for testing
*
* PHP version 5
*
* LICENSE:
*
* Copyright (c) 2008, 2009, Alexey Borzov <avb@php.net>
* 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.
* * The names of the authors may not 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 OWNER 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.
*
* @category HTTP
* @package HTTP_Request2
* @author Alexey Borzov <avb@php.net>
* @license http://opensource.org/licenses/bsd-license.php New BSD License
* @version CVS: $Id: Mock.php 274406 2009-01-23 18:01:57Z avb $
* @link http://pear.php.net/package/HTTP_Request2
*/
/**
* Base class for HTTP_Request2 adapters
*/
require_once 'HTTP/Request2/Adapter.php';
/**
* Mock adapter intended for testing
*
* Can be used to test applications depending on HTTP_Request2 package without
* actually performing any HTTP requests. This adapter will return responses
* previously added via addResponse()
* <code>
* $mock = new HTTP_Request2_Adapter_Mock();
* $mock->addResponse("HTTP/1.1 ... ");
*
* $request = new HTTP_Request2();
* $request->setAdapter($mock);
*
* // This will return the response set above
* $response = $req->send();
* </code>
*
* @category HTTP
* @package HTTP_Request2
* @author Alexey Borzov <avb@php.net>
* @version Release: 0.4.1
*/
class HTTP_Request2_Adapter_Mock extends HTTP_Request2_Adapter
{
/**
* A queue of responses to be returned by sendRequest()
* @var array
*/
protected $responses = array();
/**
* Returns the next response from the queue built by addResponse()
*
* If the queue is empty will return default empty response with status 400,
* if an Exception object was added to the queue it will be thrown.
*
* @param HTTP_Request2
* @return HTTP_Request2_Response
* @throws Exception
*/
public function sendRequest(HTTP_Request2 $request)
{
if (count($this->responses) > 0) {
$response = array_shift($this->responses);
if ($response instanceof HTTP_Request2_Response) {
return $response;
} else {
// rethrow the exception,
$class = get_class($response);
$message = $response->getMessage();
$code = $response->getCode();
throw new $class($message, $code);
}
} else {
return self::createResponseFromString("HTTP/1.1 400 Bad Request\r\n\r\n");
}
}
/**
* Adds response to the queue
*
* @param mixed either a string, a pointer to an open file,
* a HTTP_Request2_Response or Exception object
* @throws HTTP_Request2_Exception
*/
public function addResponse($response)
{
if (is_string($response)) {
$response = self::createResponseFromString($response);
} elseif (is_resource($response)) {
$response = self::createResponseFromFile($response);
} elseif (!$response instanceof HTTP_Request2_Response &&
!$response instanceof Exception
) {
throw new HTTP_Request2_Exception('Parameter is not a valid response');
}
$this->responses[] = $response;
}
/**
* Creates a new HTTP_Request2_Response object from a string
*
* @param string
* @return HTTP_Request2_Response
* @throws HTTP_Request2_Exception
*/
public static function createResponseFromString($str)
{
$parts = preg_split('!(\r?\n){2}!m', $str, 2);
$headerLines = explode("\n", $parts[0]);
$response = new HTTP_Request2_Response(array_shift($headerLines));
foreach ($headerLines as $headerLine) {
$response->parseHeaderLine($headerLine);
}
$response->parseHeaderLine('');
if (isset($parts[1])) {
$response->appendBody($parts[1]);
}
return $response;
}
/**
* Creates a new HTTP_Request2_Response object from a file
*
* @param resource file pointer returned by fopen()
* @return HTTP_Request2_Response
* @throws HTTP_Request2_Exception
*/
public static function createResponseFromFile($fp)
{
$response = new HTTP_Request2_Response(fgets($fp));
do {
$headerLine = fgets($fp);
$response->parseHeaderLine($headerLine);
} while ('' != trim($headerLine));
while (!feof($fp)) {
$response->appendBody(fread($fp, 8192));
}
return $response;
}
}
?>

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<?php
/**
* Socket-based adapter for HTTP_Request2
*
* PHP version 5
*
* LICENSE:
*
* Copyright (c) 2008, 2009, Alexey Borzov <avb@php.net>
* 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.
* * The names of the authors may not 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 OWNER 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.
*
* @category HTTP
* @package HTTP_Request2
* @author Alexey Borzov <avb@php.net>
* @license http://opensource.org/licenses/bsd-license.php New BSD License
* @version CVS: $Id: Socket.php 279760 2009-05-03 10:46:42Z avb $
* @link http://pear.php.net/package/HTTP_Request2
*/
/**
* Base class for HTTP_Request2 adapters
*/
require_once 'HTTP/Request2/Adapter.php';
/**
* Socket-based adapter for HTTP_Request2
*
* This adapter uses only PHP sockets and will work on almost any PHP
* environment. Code is based on original HTTP_Request PEAR package.
*
* @category HTTP
* @package HTTP_Request2
* @author Alexey Borzov <avb@php.net>
* @version Release: 0.4.1
*/
class HTTP_Request2_Adapter_Socket extends HTTP_Request2_Adapter
{
/**
* Regular expression for 'token' rule from RFC 2616
*/
const REGEXP_TOKEN = '[^\x00-\x1f\x7f-\xff()<>@,;:\\\\"/\[\]?={}\s]+';
/**
* Regular expression for 'quoted-string' rule from RFC 2616
*/
const REGEXP_QUOTED_STRING = '"(?:\\\\.|[^\\\\"])*"';
/**
* Connected sockets, needed for Keep-Alive support
* @var array
* @see connect()
*/
protected static $sockets = array();
/**
* Data for digest authentication scheme
*
* The keys for the array are URL prefixes.
*
* The values are associative arrays with data (realm, nonce, nonce-count,
* opaque...) needed for digest authentication. Stored here to prevent making
* duplicate requests to digest-protected resources after we have already
* received the challenge.
*
* @var array
*/
protected static $challenges = array();
/**
* Connected socket
* @var resource
* @see connect()
*/
protected $socket;
/**
* Challenge used for server digest authentication
* @var array
*/
protected $serverChallenge;
/**
* Challenge used for proxy digest authentication
* @var array
*/
protected $proxyChallenge;
/**
* Global timeout, exception will be raised if request continues past this time
* @var integer
*/
protected $timeout = null;
/**
* Remaining length of the current chunk, when reading chunked response
* @var integer
* @see readChunked()
*/
protected $chunkLength = 0;
/**
* Sends request to the remote server and returns its response
*
* @param HTTP_Request2
* @return HTTP_Request2_Response
* @throws HTTP_Request2_Exception
*/
public function sendRequest(HTTP_Request2 $request)
{
$this->request = $request;
$keepAlive = $this->connect();
$headers = $this->prepareHeaders();
// Use global request timeout if given, see feature requests #5735, #8964
if ($timeout = $request->getConfig('timeout')) {
$this->timeout = time() + $timeout;
} else {
$this->timeout = null;
}
try {
if (false === @fwrite($this->socket, $headers, strlen($headers))) {
throw new HTTP_Request2_Exception('Error writing request');
}
// provide request headers to the observer, see request #7633
$this->request->setLastEvent('sentHeaders', $headers);
$this->writeBody();
if ($this->timeout && time() > $this->timeout) {
throw new HTTP_Request2_Exception(
'Request timed out after ' .
$request->getConfig('timeout') . ' second(s)'
);
}
$response = $this->readResponse();
if (!$this->canKeepAlive($keepAlive, $response)) {
$this->disconnect();
}
if ($this->shouldUseProxyDigestAuth($response)) {
return $this->sendRequest($request);
}
if ($this->shouldUseServerDigestAuth($response)) {
return $this->sendRequest($request);
}
if ($authInfo = $response->getHeader('authentication-info')) {
$this->updateChallenge($this->serverChallenge, $authInfo);
}
if ($proxyInfo = $response->getHeader('proxy-authentication-info')) {
$this->updateChallenge($this->proxyChallenge, $proxyInfo);
}
} catch (Exception $e) {
$this->disconnect();
throw $e;
}
return $response;
}
/**
* Connects to the remote server
*
* @return bool whether the connection can be persistent
* @throws HTTP_Request2_Exception
*/
protected function connect()
{
$secure = 0 == strcasecmp($this->request->getUrl()->getScheme(), 'https');
$tunnel = HTTP_Request2::METHOD_CONNECT == $this->request->getMethod();
$headers = $this->request->getHeaders();
$reqHost = $this->request->getUrl()->getHost();
if (!($reqPort = $this->request->getUrl()->getPort())) {
$reqPort = $secure? 443: 80;
}
if ($host = $this->request->getConfig('proxy_host')) {
if (!($port = $this->request->getConfig('proxy_port'))) {
throw new HTTP_Request2_Exception('Proxy port not provided');
}
$proxy = true;
} else {
$host = $reqHost;
$port = $reqPort;
$proxy = false;
}
if ($tunnel && !$proxy) {
throw new HTTP_Request2_Exception(
"Trying to perform CONNECT request without proxy"
);
}
if ($secure && !in_array('ssl', stream_get_transports())) {
throw new HTTP_Request2_Exception(
'Need OpenSSL support for https:// requests'
);
}
// RFC 2068, section 19.7.1: A client MUST NOT send the Keep-Alive
// connection token to a proxy server...
if ($proxy && !$secure &&
!empty($headers['connection']) && 'Keep-Alive' == $headers['connection']
) {
$this->request->setHeader('connection');
}
$keepAlive = ('1.1' == $this->request->getConfig('protocol_version') &&
empty($headers['connection'])) ||
(!empty($headers['connection']) &&
'Keep-Alive' == $headers['connection']);
$host = ((!$secure || $proxy)? 'tcp://': 'ssl://') . $host;
$options = array();
if ($secure || $tunnel) {
foreach ($this->request->getConfig() as $name => $value) {
if ('ssl_' == substr($name, 0, 4) && null !== $value) {
if ('ssl_verify_host' == $name) {
if ($value) {
$options['CN_match'] = $reqHost;
}
} else {
$options[substr($name, 4)] = $value;
}
}
}
ksort($options);
}
// Changing SSL context options after connection is established does *not*
// work, we need a new connection if options change
$remote = $host . ':' . $port;
$socketKey = $remote . (($secure && $proxy)? "->{$reqHost}:{$reqPort}": '') .
(empty($options)? '': ':' . serialize($options));
unset($this->socket);
// We use persistent connections and have a connected socket?
// Ensure that the socket is still connected, see bug #16149
if ($keepAlive && !empty(self::$sockets[$socketKey]) &&
!feof(self::$sockets[$socketKey])
) {
$this->socket =& self::$sockets[$socketKey];
} elseif ($secure && $proxy && !$tunnel) {
$this->establishTunnel();
$this->request->setLastEvent(
'connect', "ssl://{$reqHost}:{$reqPort} via {$host}:{$port}"
);
self::$sockets[$socketKey] =& $this->socket;
} else {
// Set SSL context options if doing HTTPS request or creating a tunnel
$context = stream_context_create();
foreach ($options as $name => $value) {
if (!stream_context_set_option($context, 'ssl', $name, $value)) {
throw new HTTP_Request2_Exception(
"Error setting SSL context option '{$name}'"
);
}
}
$this->socket = @stream_socket_client(
$remote, $errno, $errstr,
$this->request->getConfig('connect_timeout'),
STREAM_CLIENT_CONNECT, $context
);
if (!$this->socket) {
throw new HTTP_Request2_Exception(
"Unable to connect to {$remote}. Error #{$errno}: {$errstr}"
);
}
$this->request->setLastEvent('connect', $remote);
self::$sockets[$socketKey] =& $this->socket;
}
return $keepAlive;
}
/**
* Establishes a tunnel to a secure remote server via HTTP CONNECT request
*
* This method will fail if 'ssl_verify_peer' is enabled. Probably because PHP
* sees that we are connected to a proxy server (duh!) rather than the server
* that presents its certificate.
*
* @link http://tools.ietf.org/html/rfc2817#section-5.2
* @throws HTTP_Request2_Exception
*/
protected function establishTunnel()
{
$donor = new self;
$connect = new HTTP_Request2(
$this->request->getUrl(), HTTP_Request2::METHOD_CONNECT,
array_merge($this->request->getConfig(),
array('adapter' => $donor))
);
$response = $connect->send();
// Need any successful (2XX) response
if (200 > $response->getStatus() || 300 <= $response->getStatus()) {
throw new HTTP_Request2_Exception(
'Failed to connect via HTTPS proxy. Proxy response: ' .
$response->getStatus() . ' ' . $response->getReasonPhrase()
);
}
$this->socket = $donor->socket;
$modes = array(
STREAM_CRYPTO_METHOD_TLS_CLIENT,
STREAM_CRYPTO_METHOD_SSLv3_CLIENT,
STREAM_CRYPTO_METHOD_SSLv23_CLIENT,
STREAM_CRYPTO_METHOD_SSLv2_CLIENT
);
foreach ($modes as $mode) {
if (stream_socket_enable_crypto($this->socket, true, $mode)) {
return;
}
}
throw new HTTP_Request2_Exception(
'Failed to enable secure connection when connecting through proxy'
);
}
/**
* Checks whether current connection may be reused or should be closed
*
* @param boolean whether connection could be persistent
* in the first place
* @param HTTP_Request2_Response response object to check
* @return boolean
*/
protected function canKeepAlive($requestKeepAlive, HTTP_Request2_Response $response)
{
// Do not close socket on successful CONNECT request
if (HTTP_Request2::METHOD_CONNECT == $this->request->getMethod() &&
200 <= $response->getStatus() && 300 > $response->getStatus()
) {
return true;
}
$lengthKnown = 'chunked' == strtolower($response->getHeader('transfer-encoding')) ||
null !== $response->getHeader('content-length');
$persistent = 'keep-alive' == strtolower($response->getHeader('connection')) ||
(null === $response->getHeader('connection') &&
'1.1' == $response->getVersion());
return $requestKeepAlive && $lengthKnown && $persistent;
}
/**
* Disconnects from the remote server
*/
protected function disconnect()
{
if (is_resource($this->socket)) {
fclose($this->socket);
$this->socket = null;
$this->request->setLastEvent('disconnect');
}
}
/**
* Checks whether another request should be performed with server digest auth
*
* Several conditions should be satisfied for it to return true:
* - response status should be 401
* - auth credentials should be set in the request object
* - response should contain WWW-Authenticate header with digest challenge
* - there is either no challenge stored for this URL or new challenge
* contains stale=true parameter (in other case we probably just failed
* due to invalid username / password)
*
* The method stores challenge values in $challenges static property
*
* @param HTTP_Request2_Response response to check
* @return boolean whether another request should be performed
* @throws HTTP_Request2_Exception in case of unsupported challenge parameters
*/
protected function shouldUseServerDigestAuth(HTTP_Request2_Response $response)
{
// no sense repeating a request if we don't have credentials
if (401 != $response->getStatus() || !$this->request->getAuth()) {
return false;
}
if (!$challenge = $this->parseDigestChallenge($response->getHeader('www-authenticate'))) {
return false;
}
$url = $this->request->getUrl();
$scheme = $url->getScheme();
$host = $scheme . '://' . $url->getHost();
if ($port = $url->getPort()) {
if ((0 == strcasecmp($scheme, 'http') && 80 != $port) ||
(0 == strcasecmp($scheme, 'https') && 443 != $port)
) {
$host .= ':' . $port;
}
}
if (!empty($challenge['domain'])) {
$prefixes = array();
foreach (preg_split('/\\s+/', $challenge['domain']) as $prefix) {
// don't bother with different servers
if ('/' == substr($prefix, 0, 1)) {
$prefixes[] = $host . $prefix;
}
}
}
if (empty($prefixes)) {
$prefixes = array($host . '/');
}
$ret = true;
foreach ($prefixes as $prefix) {
if (!empty(self::$challenges[$prefix]) &&
(empty($challenge['stale']) || strcasecmp('true', $challenge['stale']))
) {
// probably credentials are invalid
$ret = false;
}
self::$challenges[$prefix] =& $challenge;
}
return $ret;
}
/**
* Checks whether another request should be performed with proxy digest auth
*
* Several conditions should be satisfied for it to return true:
* - response status should be 407
* - proxy auth credentials should be set in the request object
* - response should contain Proxy-Authenticate header with digest challenge
* - there is either no challenge stored for this proxy or new challenge
* contains stale=true parameter (in other case we probably just failed
* due to invalid username / password)
*
* The method stores challenge values in $challenges static property
*
* @param HTTP_Request2_Response response to check
* @return boolean whether another request should be performed
* @throws HTTP_Request2_Exception in case of unsupported challenge parameters
*/
protected function shouldUseProxyDigestAuth(HTTP_Request2_Response $response)
{
if (407 != $response->getStatus() || !$this->request->getConfig('proxy_user')) {
return false;
}
if (!($challenge = $this->parseDigestChallenge($response->getHeader('proxy-authenticate')))) {
return false;
}
$key = 'proxy://' . $this->request->getConfig('proxy_host') .
':' . $this->request->getConfig('proxy_port');
if (!empty(self::$challenges[$key]) &&
(empty($challenge['stale']) || strcasecmp('true', $challenge['stale']))
) {
$ret = false;
} else {
$ret = true;
}
self::$challenges[$key] = $challenge;
return $ret;
}
/**
* Extracts digest method challenge from (WWW|Proxy)-Authenticate header value
*
* There is a problem with implementation of RFC 2617: several of the parameters
* here are defined as quoted-string and thus may contain backslash escaped
* double quotes (RFC 2616, section 2.2). However, RFC 2617 defines unq(X) as
* just value of quoted-string X without surrounding quotes, it doesn't speak
* about removing backslash escaping.
*
* Now realm parameter is user-defined and human-readable, strange things
* happen when it contains quotes:
* - Apache allows quotes in realm, but apparently uses realm value without
* backslashes for digest computation
* - Squid allows (manually escaped) quotes there, but it is impossible to
* authorize with either escaped or unescaped quotes used in digest,
* probably it can't parse the response (?)
* - Both IE and Firefox display realm value with backslashes in
* the password popup and apparently use the same value for digest
*
* HTTP_Request2 follows IE and Firefox (and hopefully RFC 2617) in
* quoted-string handling, unfortunately that means failure to authorize
* sometimes
*
* @param string value of WWW-Authenticate or Proxy-Authenticate header
* @return mixed associative array with challenge parameters, false if
* no challenge is present in header value
* @throws HTTP_Request2_Exception in case of unsupported challenge parameters
*/
protected function parseDigestChallenge($headerValue)
{
$authParam = '(' . self::REGEXP_TOKEN . ')\\s*=\\s*(' .
self::REGEXP_TOKEN . '|' . self::REGEXP_QUOTED_STRING . ')';
$challenge = "!(?<=^|\\s|,)Digest ({$authParam}\\s*(,\\s*|$))+!";
if (!preg_match($challenge, $headerValue, $matches)) {
return false;
}
preg_match_all('!' . $authParam . '!', $matches[0], $params);
$paramsAry = array();
$knownParams = array('realm', 'domain', 'nonce', 'opaque', 'stale',
'algorithm', 'qop');
for ($i = 0; $i < count($params[0]); $i++) {
// section 3.2.1: Any unrecognized directive MUST be ignored.
if (in_array($params[1][$i], $knownParams)) {
if ('"' == substr($params[2][$i], 0, 1)) {
$paramsAry[$params[1][$i]] = substr($params[2][$i], 1, -1);
} else {
$paramsAry[$params[1][$i]] = $params[2][$i];
}
}
}
// we only support qop=auth
if (!empty($paramsAry['qop']) &&
!in_array('auth', array_map('trim', explode(',', $paramsAry['qop'])))
) {
throw new HTTP_Request2_Exception(
"Only 'auth' qop is currently supported in digest authentication, " .
"server requested '{$paramsAry['qop']}'"
);
}
// we only support algorithm=MD5
if (!empty($paramsAry['algorithm']) && 'MD5' != $paramsAry['algorithm']) {
throw new HTTP_Request2_Exception(
"Only 'MD5' algorithm is currently supported in digest authentication, " .
"server requested '{$paramsAry['algorithm']}'"
);
}
return $paramsAry;
}
/**
* Parses [Proxy-]Authentication-Info header value and updates challenge
*
* @param array challenge to update
* @param string value of [Proxy-]Authentication-Info header
* @todo validate server rspauth response
*/
protected function updateChallenge(&$challenge, $headerValue)
{
$authParam = '!(' . self::REGEXP_TOKEN . ')\\s*=\\s*(' .
self::REGEXP_TOKEN . '|' . self::REGEXP_QUOTED_STRING . ')!';
$paramsAry = array();
preg_match_all($authParam, $headerValue, $params);
for ($i = 0; $i < count($params[0]); $i++) {
if ('"' == substr($params[2][$i], 0, 1)) {
$paramsAry[$params[1][$i]] = substr($params[2][$i], 1, -1);
} else {
$paramsAry[$params[1][$i]] = $params[2][$i];
}
}
// for now, just update the nonce value
if (!empty($paramsAry['nextnonce'])) {
$challenge['nonce'] = $paramsAry['nextnonce'];
$challenge['nc'] = 1;
}
}
/**
* Creates a value for [Proxy-]Authorization header when using digest authentication
*
* @param string user name
* @param string password
* @param string request URL
* @param array digest challenge parameters
* @return string value of [Proxy-]Authorization request header
* @link http://tools.ietf.org/html/rfc2617#section-3.2.2
*/
protected function createDigestResponse($user, $password, $url, &$challenge)
{
if (false !== ($q = strpos($url, '?')) &&
$this->request->getConfig('digest_compat_ie')
) {
$url = substr($url, 0, $q);
}
$a1 = md5($user . ':' . $challenge['realm'] . ':' . $password);
$a2 = md5($this->request->getMethod() . ':' . $url);
if (empty($challenge['qop'])) {
$digest = md5($a1 . ':' . $challenge['nonce'] . ':' . $a2);
} else {
$challenge['cnonce'] = 'Req2.' . rand();
if (empty($challenge['nc'])) {
$challenge['nc'] = 1;
}
$nc = sprintf('%08x', $challenge['nc']++);
$digest = md5($a1 . ':' . $challenge['nonce'] . ':' . $nc . ':' .
$challenge['cnonce'] . ':auth:' . $a2);
}
return 'Digest username="' . str_replace(array('\\', '"'), array('\\\\', '\\"'), $user) . '", ' .
'realm="' . $challenge['realm'] . '", ' .
'nonce="' . $challenge['nonce'] . '", ' .
'uri="' . $url . '", ' .
'response="' . $digest . '"' .
(!empty($challenge['opaque'])?
', opaque="' . $challenge['opaque'] . '"':
'') .
(!empty($challenge['qop'])?
', qop="auth", nc=' . $nc . ', cnonce="' . $challenge['cnonce'] . '"':
'');
}
/**
* Adds 'Authorization' header (if needed) to request headers array
*
* @param array request headers
* @param string request host (needed for digest authentication)
* @param string request URL (needed for digest authentication)
* @throws HTTP_Request2_Exception
*/
protected function addAuthorizationHeader(&$headers, $requestHost, $requestUrl)
{
if (!($auth = $this->request->getAuth())) {
return;
}
switch ($auth['scheme']) {
case HTTP_Request2::AUTH_BASIC:
$headers['authorization'] =
'Basic ' . base64_encode($auth['user'] . ':' . $auth['password']);
break;
case HTTP_Request2::AUTH_DIGEST:
unset($this->serverChallenge);
$fullUrl = ('/' == $requestUrl[0])?
$this->request->getUrl()->getScheme() . '://' .
$requestHost . $requestUrl:
$requestUrl;
foreach (array_keys(self::$challenges) as $key) {
if ($key == substr($fullUrl, 0, strlen($key))) {
$headers['authorization'] = $this->createDigestResponse(
$auth['user'], $auth['password'],
$requestUrl, self::$challenges[$key]
);
$this->serverChallenge =& self::$challenges[$key];
break;
}
}
break;
default:
throw new HTTP_Request2_Exception(
"Unknown HTTP authentication scheme '{$auth['scheme']}'"
);
}
}
/**
* Adds 'Proxy-Authorization' header (if needed) to request headers array
*
* @param array request headers
* @param string request URL (needed for digest authentication)
* @throws HTTP_Request2_Exception
*/
protected function addProxyAuthorizationHeader(&$headers, $requestUrl)
{
if (!$this->request->getConfig('proxy_host') ||
!($user = $this->request->getConfig('proxy_user')) ||
(0 == strcasecmp('https', $this->request->getUrl()->getScheme()) &&
HTTP_Request2::METHOD_CONNECT != $this->request->getMethod())
) {
return;
}
$password = $this->request->getConfig('proxy_password');
switch ($this->request->getConfig('proxy_auth_scheme')) {
case HTTP_Request2::AUTH_BASIC:
$headers['proxy-authorization'] =
'Basic ' . base64_encode($user . ':' . $password);
break;
case HTTP_Request2::AUTH_DIGEST:
unset($this->proxyChallenge);
$proxyUrl = 'proxy://' . $this->request->getConfig('proxy_host') .
':' . $this->request->getConfig('proxy_port');
if (!empty(self::$challenges[$proxyUrl])) {
$headers['proxy-authorization'] = $this->createDigestResponse(
$user, $password,
$requestUrl, self::$challenges[$proxyUrl]
);
$this->proxyChallenge =& self::$challenges[$proxyUrl];
}
break;
default:
throw new HTTP_Request2_Exception(
"Unknown HTTP authentication scheme '" .
$this->request->getConfig('proxy_auth_scheme') . "'"
);
}
}
/**
* Creates the string with the Request-Line and request headers
*
* @return string
* @throws HTTP_Request2_Exception
*/
protected function prepareHeaders()
{
$headers = $this->request->getHeaders();
$url = $this->request->getUrl();
$connect = HTTP_Request2::METHOD_CONNECT == $this->request->getMethod();
$host = $url->getHost();
$defaultPort = 0 == strcasecmp($url->getScheme(), 'https')? 443: 80;
if (($port = $url->getPort()) && $port != $defaultPort || $connect) {
$host .= ':' . (empty($port)? $defaultPort: $port);
}
// Do not overwrite explicitly set 'Host' header, see bug #16146
if (!isset($headers['host'])) {
$headers['host'] = $host;
}
if ($connect) {
$requestUrl = $host;
} else {
if (!$this->request->getConfig('proxy_host') ||
0 == strcasecmp($url->getScheme(), 'https')
) {
$requestUrl = '';
} else {
$requestUrl = $url->getScheme() . '://' . $host;
}
$path = $url->getPath();
$query = $url->getQuery();
$requestUrl .= (empty($path)? '/': $path) . (empty($query)? '': '?' . $query);
}
if ('1.1' == $this->request->getConfig('protocol_version') &&
extension_loaded('zlib') && !isset($headers['accept-encoding'])
) {
$headers['accept-encoding'] = 'gzip, deflate';
}
$this->addAuthorizationHeader($headers, $host, $requestUrl);
$this->addProxyAuthorizationHeader($headers, $requestUrl);
$this->calculateRequestLength($headers);
$headersStr = $this->request->getMethod() . ' ' . $requestUrl . ' HTTP/' .
$this->request->getConfig('protocol_version') . "\r\n";
foreach ($headers as $name => $value) {
$canonicalName = implode('-', array_map('ucfirst', explode('-', $name)));
$headersStr .= $canonicalName . ': ' . $value . "\r\n";
}
return $headersStr . "\r\n";
}
/**
* Sends the request body
*
* @throws HTTP_Request2_Exception
*/
protected function writeBody()
{
if (in_array($this->request->getMethod(), self::$bodyDisallowed) ||
0 == $this->contentLength
) {
return;
}
$position = 0;
$bufferSize = $this->request->getConfig('buffer_size');
while ($position < $this->contentLength) {
if (is_string($this->requestBody)) {
$str = substr($this->requestBody, $position, $bufferSize);
} elseif (is_resource($this->requestBody)) {
$str = fread($this->requestBody, $bufferSize);
} else {
$str = $this->requestBody->read($bufferSize);
}
if (false === @fwrite($this->socket, $str, strlen($str))) {
throw new HTTP_Request2_Exception('Error writing request');
}
// Provide the length of written string to the observer, request #7630
$this->request->setLastEvent('sentBodyPart', strlen($str));
$position += strlen($str);
}
}
/**
* Reads the remote server's response
*
* @return HTTP_Request2_Response
* @throws HTTP_Request2_Exception
*/
protected function readResponse()
{
$bufferSize = $this->request->getConfig('buffer_size');
do {
$response = new HTTP_Request2_Response($this->readLine($bufferSize), true);
do {
$headerLine = $this->readLine($bufferSize);
$response->parseHeaderLine($headerLine);
} while ('' != $headerLine);
} while (in_array($response->getStatus(), array(100, 101)));
$this->request->setLastEvent('receivedHeaders', $response);
// No body possible in such responses
if (HTTP_Request2::METHOD_HEAD == $this->request->getMethod() ||
(HTTP_Request2::METHOD_CONNECT == $this->request->getMethod() &&
200 <= $response->getStatus() && 300 > $response->getStatus()) ||
in_array($response->getStatus(), array(204, 304))
) {
return $response;
}
$chunked = 'chunked' == $response->getHeader('transfer-encoding');
$length = $response->getHeader('content-length');
$hasBody = false;
if ($chunked || null === $length || 0 < intval($length)) {
// RFC 2616, section 4.4:
// 3. ... If a message is received with both a
// Transfer-Encoding header field and a Content-Length header field,
// the latter MUST be ignored.
$toRead = ($chunked || null === $length)? null: $length;
$this->chunkLength = 0;
while (!feof($this->socket) && (is_null($toRead) || 0 < $toRead)) {
if ($chunked) {
$data = $this->readChunked($bufferSize);
} elseif (is_null($toRead)) {
$data = $this->fread($bufferSize);
} else {
$data = $this->fread(min($toRead, $bufferSize));
$toRead -= strlen($data);
}
if ('' == $data && (!$this->chunkLength || feof($this->socket))) {
break;
}
$hasBody = true;
if ($this->request->getConfig('store_body')) {
$response->appendBody($data);
}
if (!in_array($response->getHeader('content-encoding'), array('identity', null))) {
$this->request->setLastEvent('receivedEncodedBodyPart', $data);
} else {
$this->request->setLastEvent('receivedBodyPart', $data);
}
}
}
if ($hasBody) {
$this->request->setLastEvent('receivedBody', $response);
}
return $response;
}
/**
* Reads until either the end of the socket or a newline, whichever comes first
*
* Strips the trailing newline from the returned data, handles global
* request timeout. Method idea borrowed from Net_Socket PEAR package.
*
* @param int buffer size to use for reading
* @return Available data up to the newline (not including newline)
* @throws HTTP_Request2_Exception In case of timeout
*/
protected function readLine($bufferSize)
{
$line = '';
while (!feof($this->socket)) {
if ($this->timeout) {
stream_set_timeout($this->socket, max($this->timeout - time(), 1));
}
$line .= @fgets($this->socket, $bufferSize);
$info = stream_get_meta_data($this->socket);
if ($info['timed_out'] || $this->timeout && time() > $this->timeout) {
throw new HTTP_Request2_Exception(
'Request timed out after ' .
$this->request->getConfig('timeout') . ' second(s)'
);
}
if (substr($line, -1) == "\n") {
return rtrim($line, "\r\n");
}
}
return $line;
}
/**
* Wrapper around fread(), handles global request timeout
*
* @param int Reads up to this number of bytes
* @return Data read from socket
* @throws HTTP_Request2_Exception In case of timeout
*/
protected function fread($length)
{
if ($this->timeout) {
stream_set_timeout($this->socket, max($this->timeout - time(), 1));
}
$data = fread($this->socket, $length);
$info = stream_get_meta_data($this->socket);
if ($info['timed_out'] || $this->timeout && time() > $this->timeout) {
throw new HTTP_Request2_Exception(
'Request timed out after ' .
$this->request->getConfig('timeout') . ' second(s)'
);
}
return $data;
}
/**
* Reads a part of response body encoded with chunked Transfer-Encoding
*
* @param int buffer size to use for reading
* @return string
* @throws HTTP_Request2_Exception
*/
protected function readChunked($bufferSize)
{
// at start of the next chunk?
if (0 == $this->chunkLength) {
$line = $this->readLine($bufferSize);
if (!preg_match('/^([0-9a-f]+)/i', $line, $matches)) {
throw new HTTP_Request2_Exception(
"Cannot decode chunked response, invalid chunk length '{$line}'"
);
} else {
$this->chunkLength = hexdec($matches[1]);
// Chunk with zero length indicates the end
if (0 == $this->chunkLength) {
$this->readLine($bufferSize);
return '';
}
}
}
$data = $this->fread(min($this->chunkLength, $bufferSize));
$this->chunkLength -= strlen($data);
if (0 == $this->chunkLength) {
$this->readLine($bufferSize); // Trailing CRLF
}
return $data;
}
}
?>

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@@ -1,62 +0,0 @@
<?php
/**
* Exception class for HTTP_Request2 package
*
* PHP version 5
*
* LICENSE:
*
* Copyright (c) 2008, 2009, Alexey Borzov <avb@php.net>
* 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.
* * The names of the authors may not 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 OWNER 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.
*
* @category HTTP
* @package HTTP_Request2
* @author Alexey Borzov <avb@php.net>
* @license http://opensource.org/licenses/bsd-license.php New BSD License
* @version CVS: $Id: Exception.php 273003 2009-01-07 19:28:22Z avb $
* @link http://pear.php.net/package/HTTP_Request2
*/
/**
* Base class for exceptions in PEAR
*/
require_once 'PEAR/Exception.php';
/**
* Exception class for HTTP_Request2 package
*
* Such a class is required by the Exception RFC:
* http://pear.php.net/pepr/pepr-proposal-show.php?id=132
*
* @category HTTP
* @package HTTP_Request2
* @version Release: 0.4.1
*/
class HTTP_Request2_Exception extends PEAR_Exception
{
}
?>

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@@ -1,274 +0,0 @@
<?php
/**
* Helper class for building multipart/form-data request body
*
* PHP version 5
*
* LICENSE:
*
* Copyright (c) 2008, 2009, Alexey Borzov <avb@php.net>
* 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.
* * The names of the authors may not 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 OWNER 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.
*
* @category HTTP
* @package HTTP_Request2
* @author Alexey Borzov <avb@php.net>
* @license http://opensource.org/licenses/bsd-license.php New BSD License
* @version CVS: $Id: MultipartBody.php 287306 2009-08-14 15:22:52Z avb $
* @link http://pear.php.net/package/HTTP_Request2
*/
/**
* Class for building multipart/form-data request body
*
* The class helps to reduce memory consumption by streaming large file uploads
* from disk, it also allows monitoring of upload progress (see request #7630)
*
* @category HTTP
* @package HTTP_Request2
* @author Alexey Borzov <avb@php.net>
* @version Release: 0.4.1
* @link http://tools.ietf.org/html/rfc1867
*/
class HTTP_Request2_MultipartBody
{
/**
* MIME boundary
* @var string
*/
private $_boundary;
/**
* Form parameters added via {@link HTTP_Request2::addPostParameter()}
* @var array
*/
private $_params = array();
/**
* File uploads added via {@link HTTP_Request2::addUpload()}
* @var array
*/
private $_uploads = array();
/**
* Header for parts with parameters
* @var string
*/
private $_headerParam = "--%s\r\nContent-Disposition: form-data; name=\"%s\"\r\n\r\n";
/**
* Header for parts with uploads
* @var string
*/
private $_headerUpload = "--%s\r\nContent-Disposition: form-data; name=\"%s\"; filename=\"%s\"\r\nContent-Type: %s\r\n\r\n";
/**
* Current position in parameter and upload arrays
*
* First number is index of "current" part, second number is position within
* "current" part
*
* @var array
*/
private $_pos = array(0, 0);
/**
* Constructor. Sets the arrays with POST data.
*
* @param array values of form fields set via {@link HTTP_Request2::addPostParameter()}
* @param array file uploads set via {@link HTTP_Request2::addUpload()}
* @param bool whether to append brackets to array variable names
*/
public function __construct(array $params, array $uploads, $useBrackets = true)
{
$this->_params = self::_flattenArray('', $params, $useBrackets);
foreach ($uploads as $fieldName => $f) {
if (!is_array($f['fp'])) {
$this->_uploads[] = $f + array('name' => $fieldName);
} else {
for ($i = 0; $i < count($f['fp']); $i++) {
$upload = array(
'name' => ($useBrackets? $fieldName . '[' . $i . ']': $fieldName)
);
foreach (array('fp', 'filename', 'size', 'type') as $key) {
$upload[$key] = $f[$key][$i];
}
$this->_uploads[] = $upload;
}
}
}
}
/**
* Returns the length of the body to use in Content-Length header
*
* @return integer
*/
public function getLength()
{
$boundaryLength = strlen($this->getBoundary());
$headerParamLength = strlen($this->_headerParam) - 4 + $boundaryLength;
$headerUploadLength = strlen($this->_headerUpload) - 8 + $boundaryLength;
$length = $boundaryLength + 6;
foreach ($this->_params as $p) {
$length += $headerParamLength + strlen($p[0]) + strlen($p[1]) + 2;
}
foreach ($this->_uploads as $u) {
$length += $headerUploadLength + strlen($u['name']) + strlen($u['type']) +
strlen($u['filename']) + $u['size'] + 2;
}
return $length;
}
/**
* Returns the boundary to use in Content-Type header
*
* @return string
*/
public function getBoundary()
{
if (empty($this->_boundary)) {
$this->_boundary = '--' . md5('PEAR-HTTP_Request2-' . microtime());
}
return $this->_boundary;
}
/**
* Returns next chunk of request body
*
* @param integer Amount of bytes to read
* @return string Up to $length bytes of data, empty string if at end
*/
public function read($length)
{
$ret = '';
$boundary = $this->getBoundary();
$paramCount = count($this->_params);
$uploadCount = count($this->_uploads);
while ($length > 0 && $this->_pos[0] <= $paramCount + $uploadCount) {
$oldLength = $length;
if ($this->_pos[0] < $paramCount) {
$param = sprintf($this->_headerParam, $boundary,
$this->_params[$this->_pos[0]][0]) .
$this->_params[$this->_pos[0]][1] . "\r\n";
$ret .= substr($param, $this->_pos[1], $length);
$length -= min(strlen($param) - $this->_pos[1], $length);
} elseif ($this->_pos[0] < $paramCount + $uploadCount) {
$pos = $this->_pos[0] - $paramCount;
$header = sprintf($this->_headerUpload, $boundary,
$this->_uploads[$pos]['name'],
$this->_uploads[$pos]['filename'],
$this->_uploads[$pos]['type']);
if ($this->_pos[1] < strlen($header)) {
$ret .= substr($header, $this->_pos[1], $length);
$length -= min(strlen($header) - $this->_pos[1], $length);
}
$filePos = max(0, $this->_pos[1] - strlen($header));
if ($length > 0 && $filePos < $this->_uploads[$pos]['size']) {
$ret .= fread($this->_uploads[$pos]['fp'], $length);
$length -= min($length, $this->_uploads[$pos]['size'] - $filePos);
}
if ($length > 0) {
$start = $this->_pos[1] + ($oldLength - $length) -
strlen($header) - $this->_uploads[$pos]['size'];
$ret .= substr("\r\n", $start, $length);
$length -= min(2 - $start, $length);
}
} else {
$closing = '--' . $boundary . "--\r\n";
$ret .= substr($closing, $this->_pos[1], $length);
$length -= min(strlen($closing) - $this->_pos[1], $length);
}
if ($length > 0) {
$this->_pos = array($this->_pos[0] + 1, 0);
} else {
$this->_pos[1] += $oldLength;
}
}
return $ret;
}
/**
* Sets the current position to the start of the body
*
* This allows reusing the same body in another request
*/
public function rewind()
{
$this->_pos = array(0, 0);
foreach ($this->_uploads as $u) {
rewind($u['fp']);
}
}
/**
* Returns the body as string
*
* Note that it reads all file uploads into memory so it is a good idea not
* to use this method with large file uploads and rely on read() instead.
*
* @return string
*/
public function __toString()
{
$this->rewind();
return $this->read($this->getLength());
}
/**
* Helper function to change the (probably multidimensional) associative array
* into the simple one.
*
* @param string name for item
* @param mixed item's values
* @param bool whether to append [] to array variables' names
* @return array array with the following items: array('item name', 'item value');
*/
private static function _flattenArray($name, $values, $useBrackets)
{
if (!is_array($values)) {
return array(array($name, $values));
} else {
$ret = array();
foreach ($values as $k => $v) {
if (empty($name)) {
$newName = $k;
} elseif ($useBrackets) {
$newName = $name . '[' . $k . ']';
} else {
$newName = $name;
}
$ret = array_merge($ret, self::_flattenArray($newName, $v, $useBrackets));
}
return $ret;
}
}
}
?>

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<?php
/**
* An observer useful for debugging / testing.
*
* PHP version 5
*
* LICENSE:
*
* Copyright (c) 2008, 2009, Alexey Borzov <avb@php.net>
* 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.
* * The names of the authors may not 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 OWNER 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.
*
* @category HTTP
* @package HTTP_Request2
* @author David Jean Louis <izi@php.net>
* @author Alexey Borzov <avb@php.net>
* @license http://opensource.org/licenses/bsd-license.php New BSD License
* @version CVS: $Id: Log.php 272593 2009-01-02 16:27:14Z avb $
* @link http://pear.php.net/package/HTTP_Request2
*/
/**
* Exception class for HTTP_Request2 package
*/
require_once 'HTTP/Request2/Exception.php';
/**
* A debug observer useful for debugging / testing.
*
* This observer logs to a log target data corresponding to the various request
* and response events, it logs by default to php://output but can be configured
* to log to a file or via the PEAR Log package.
*
* A simple example:
* <code>
* require_once 'HTTP/Request2.php';
* require_once 'HTTP/Request2/Observer/Log.php';
*
* $request = new HTTP_Request2('http://www.example.com');
* $observer = new HTTP_Request2_Observer_Log();
* $request->attach($observer);
* $request->send();
* </code>
*
* A more complex example with PEAR Log:
* <code>
* require_once 'HTTP/Request2.php';
* require_once 'HTTP/Request2/Observer/Log.php';
* require_once 'Log.php';
*
* $request = new HTTP_Request2('http://www.example.com');
* // we want to log with PEAR log
* $observer = new HTTP_Request2_Observer_Log(Log::factory('console'));
*
* // we only want to log received headers
* $observer->events = array('receivedHeaders');
*
* $request->attach($observer);
* $request->send();
* </code>
*
* @category HTTP
* @package HTTP_Request2
* @author David Jean Louis <izi@php.net>
* @author Alexey Borzov <avb@php.net>
* @license http://opensource.org/licenses/bsd-license.php New BSD License
* @version Release: 0.4.1
* @link http://pear.php.net/package/HTTP_Request2
*/
class HTTP_Request2_Observer_Log implements SplObserver
{
// properties {{{
/**
* The log target, it can be a a resource or a PEAR Log instance.
*
* @var resource|Log $target
*/
protected $target = null;
/**
* The events to log.
*
* @var array $events
*/
public $events = array(
'connect',
'sentHeaders',
'sentBodyPart',
'receivedHeaders',
'receivedBody',
'disconnect',
);
// }}}
// __construct() {{{
/**
* Constructor.
*
* @param mixed $target Can be a file path (default: php://output), a resource,
* or an instance of the PEAR Log class.
* @param array $events Array of events to listen to (default: all events)
*
* @return void
*/
public function __construct($target = 'php://output', array $events = array())
{
if (!empty($events)) {
$this->events = $events;
}
if (is_resource($target) || $target instanceof Log) {
$this->target = $target;
} elseif (false === ($this->target = @fopen($target, 'w'))) {
throw new HTTP_Request2_Exception("Unable to open '{$target}'");
}
}
// }}}
// update() {{{
/**
* Called when the request notify us of an event.
*
* @param HTTP_Request2 $subject The HTTP_Request2 instance
*
* @return void
*/
public function update(SplSubject $subject)
{
$event = $subject->getLastEvent();
if (!in_array($event['name'], $this->events)) {
return;
}
switch ($event['name']) {
case 'connect':
$this->log('* Connected to ' . $event['data']);
break;
case 'sentHeaders':
$headers = explode("\r\n", $event['data']);
array_pop($headers);
foreach ($headers as $header) {
$this->log('> ' . $header);
}
break;
case 'sentBodyPart':
$this->log('> ' . $event['data']);
break;
case 'receivedHeaders':
$this->log(sprintf('< HTTP/%s %s %s',
$event['data']->getVersion(),
$event['data']->getStatus(),
$event['data']->getReasonPhrase()));
$headers = $event['data']->getHeader();
foreach ($headers as $key => $val) {
$this->log('< ' . $key . ': ' . $val);
}
$this->log('< ');
break;
case 'receivedBody':
$this->log($event['data']->getBody());
break;
case 'disconnect':
$this->log('* Disconnected');
break;
}
}
// }}}
// log() {{{
/**
* Log the given message to the configured target.
*
* @param string $message Message to display
*
* @return void
*/
protected function log($message)
{
if ($this->target instanceof Log) {
$this->target->debug($message);
} elseif (is_resource($this->target)) {
fwrite($this->target, $message . "\r\n");
}
}
// }}}
}
?>

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<?php
/**
* Class representing a HTTP response
*
* PHP version 5
*
* LICENSE:
*
* Copyright (c) 2008, 2009, Alexey Borzov <avb@php.net>
* 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.
* * The names of the authors may not 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 OWNER 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.
*
* @category HTTP
* @package HTTP_Request2
* @author Alexey Borzov <avb@php.net>
* @license http://opensource.org/licenses/bsd-license.php New BSD License
* @version CVS: $Id: Response.php 287948 2009-09-01 17:12:18Z avb $
* @link http://pear.php.net/package/HTTP_Request2
*/
/**
* Exception class for HTTP_Request2 package
*/
require_once 'HTTP/Request2/Exception.php';
/**
* Class representing a HTTP response
*
* The class is designed to be used in "streaming" scenario, building the
* response as it is being received:
* <code>
* $statusLine = read_status_line();
* $response = new HTTP_Request2_Response($statusLine);
* do {
* $headerLine = read_header_line();
* $response->parseHeaderLine($headerLine);
* } while ($headerLine != '');
*
* while ($chunk = read_body()) {
* $response->appendBody($chunk);
* }
*
* var_dump($response->getHeader(), $response->getCookies(), $response->getBody());
* </code>
*
*
* @category HTTP
* @package HTTP_Request2
* @author Alexey Borzov <avb@php.net>
* @version Release: 0.4.1
* @link http://tools.ietf.org/html/rfc2616#section-6
*/
class HTTP_Request2_Response
{
/**
* HTTP protocol version (e.g. 1.0, 1.1)
* @var string
*/
protected $version;
/**
* Status code
* @var integer
* @link http://tools.ietf.org/html/rfc2616#section-6.1.1
*/
protected $code;
/**
* Reason phrase
* @var string
* @link http://tools.ietf.org/html/rfc2616#section-6.1.1
*/
protected $reasonPhrase;
/**
* Associative array of response headers
* @var array
*/
protected $headers = array();
/**
* Cookies set in the response
* @var array
*/
protected $cookies = array();
/**
* Name of last header processed by parseHederLine()
*
* Used to handle the headers that span multiple lines
*
* @var string
*/
protected $lastHeader = null;
/**
* Response body
* @var string
*/
protected $body = '';
/**
* Whether the body is still encoded by Content-Encoding
*
* cURL provides the decoded body to the callback; if we are reading from
* socket the body is still gzipped / deflated
*
* @var bool
*/
protected $bodyEncoded;
/**
* Associative array of HTTP status code / reason phrase.
*
* @var array
* @link http://tools.ietf.org/html/rfc2616#section-10
*/
protected static $phrases = array(
// 1xx: Informational - Request received, continuing process
100 => 'Continue',
101 => 'Switching Protocols',
// 2xx: Success - The action was successfully received, understood and
// accepted
200 => 'OK',
201 => 'Created',
202 => 'Accepted',
203 => 'Non-Authoritative Information',
204 => 'No Content',
205 => 'Reset Content',
206 => 'Partial Content',
// 3xx: Redirection - Further action must be taken in order to complete
// the request
300 => 'Multiple Choices',
301 => 'Moved Permanently',
302 => 'Found', // 1.1
303 => 'See Other',
304 => 'Not Modified',
305 => 'Use Proxy',
307 => 'Temporary Redirect',
// 4xx: Client Error - The request contains bad syntax or cannot be
// fulfilled
400 => 'Bad Request',
401 => 'Unauthorized',
402 => 'Payment Required',
403 => 'Forbidden',
404 => 'Not Found',
405 => 'Method Not Allowed',
406 => 'Not Acceptable',
407 => 'Proxy Authentication Required',
408 => 'Request Timeout',
409 => 'Conflict',
410 => 'Gone',
411 => 'Length Required',
412 => 'Precondition Failed',
413 => 'Request Entity Too Large',
414 => 'Request-URI Too Long',
415 => 'Unsupported Media Type',
416 => 'Requested Range Not Satisfiable',
417 => 'Expectation Failed',
// 5xx: Server Error - The server failed to fulfill an apparently
// valid request
500 => 'Internal Server Error',
501 => 'Not Implemented',
502 => 'Bad Gateway',
503 => 'Service Unavailable',
504 => 'Gateway Timeout',
505 => 'HTTP Version Not Supported',
509 => 'Bandwidth Limit Exceeded',
);
/**
* Constructor, parses the response status line
*
* @param string Response status line (e.g. "HTTP/1.1 200 OK")
* @param bool Whether body is still encoded by Content-Encoding
* @throws HTTP_Request2_Exception if status line is invalid according to spec
*/
public function __construct($statusLine, $bodyEncoded = true)
{
if (!preg_match('!^HTTP/(\d\.\d) (\d{3})(?: (.+))?!', $statusLine, $m)) {
throw new HTTP_Request2_Exception("Malformed response: {$statusLine}");
}
$this->version = $m[1];
$this->code = intval($m[2]);
if (!empty($m[3])) {
$this->reasonPhrase = trim($m[3]);
} elseif (!empty(self::$phrases[$this->code])) {
$this->reasonPhrase = self::$phrases[$this->code];
}
$this->bodyEncoded = (bool)$bodyEncoded;
}
/**
* Parses the line from HTTP response filling $headers array
*
* The method should be called after reading the line from socket or receiving
* it into cURL callback. Passing an empty string here indicates the end of
* response headers and triggers additional processing, so be sure to pass an
* empty string in the end.
*
* @param string Line from HTTP response
*/
public function parseHeaderLine($headerLine)
{
$headerLine = trim($headerLine, "\r\n");
// empty string signals the end of headers, process the received ones
if ('' == $headerLine) {
if (!empty($this->headers['set-cookie'])) {
$cookies = is_array($this->headers['set-cookie'])?
$this->headers['set-cookie']:
array($this->headers['set-cookie']);
foreach ($cookies as $cookieString) {
$this->parseCookie($cookieString);
}
unset($this->headers['set-cookie']);
}
foreach (array_keys($this->headers) as $k) {
if (is_array($this->headers[$k])) {
$this->headers[$k] = implode(', ', $this->headers[$k]);
}
}
// string of the form header-name: header value
} elseif (preg_match('!^([^\x00-\x1f\x7f-\xff()<>@,;:\\\\"/\[\]?={}\s]+):(.+)$!', $headerLine, $m)) {
$name = strtolower($m[1]);
$value = trim($m[2]);
if (empty($this->headers[$name])) {
$this->headers[$name] = $value;
} else {
if (!is_array($this->headers[$name])) {
$this->headers[$name] = array($this->headers[$name]);
}
$this->headers[$name][] = $value;
}
$this->lastHeader = $name;
// string
} elseif (preg_match('!^\s+(.+)$!', $headerLine, $m) && $this->lastHeader) {
if (!is_array($this->headers[$this->lastHeader])) {
$this->headers[$this->lastHeader] .= ' ' . trim($m[1]);
} else {
$key = count($this->headers[$this->lastHeader]) - 1;
$this->headers[$this->lastHeader][$key] .= ' ' . trim($m[1]);
}
}
}
/**
* Parses a Set-Cookie header to fill $cookies array
*
* @param string value of Set-Cookie header
* @link http://cgi.netscape.com/newsref/std/cookie_spec.html
*/
protected function parseCookie($cookieString)
{
$cookie = array(
'expires' => null,
'domain' => null,
'path' => null,
'secure' => false
);
// Only a name=value pair
if (!strpos($cookieString, ';')) {
$pos = strpos($cookieString, '=');
$cookie['name'] = trim(substr($cookieString, 0, $pos));
$cookie['value'] = trim(substr($cookieString, $pos + 1));
// Some optional parameters are supplied
} else {
$elements = explode(';', $cookieString);
$pos = strpos($elements[0], '=');
$cookie['name'] = trim(substr($elements[0], 0, $pos));
$cookie['value'] = trim(substr($elements[0], $pos + 1));
for ($i = 1; $i < count($elements); $i++) {
if (false === strpos($elements[$i], '=')) {
$elName = trim($elements[$i]);
$elValue = null;
} else {
list ($elName, $elValue) = array_map('trim', explode('=', $elements[$i]));
}
$elName = strtolower($elName);
if ('secure' == $elName) {
$cookie['secure'] = true;
} elseif ('expires' == $elName) {
$cookie['expires'] = str_replace('"', '', $elValue);
} elseif ('path' == $elName || 'domain' == $elName) {
$cookie[$elName] = urldecode($elValue);
} else {
$cookie[$elName] = $elValue;
}
}
}
$this->cookies[] = $cookie;
}
/**
* Appends a string to the response body
* @param string
*/
public function appendBody($bodyChunk)
{
$this->body .= $bodyChunk;
}
/**
* Returns the status code
* @return integer
*/
public function getStatus()
{
return $this->code;
}
/**
* Returns the reason phrase
* @return string
*/
public function getReasonPhrase()
{
return $this->reasonPhrase;
}
/**
* Returns either the named header or all response headers
*
* @param string Name of header to return
* @return string|array Value of $headerName header (null if header is
* not present), array of all response headers if
* $headerName is null
*/
public function getHeader($headerName = null)
{
if (null === $headerName) {
return $this->headers;
} else {
$headerName = strtolower($headerName);
return isset($this->headers[$headerName])? $this->headers[$headerName]: null;
}
}
/**
* Returns cookies set in response
*
* @return array
*/
public function getCookies()
{
return $this->cookies;
}
/**
* Returns the body of the response
*
* @return string
* @throws HTTP_Request2_Exception if body cannot be decoded
*/
public function getBody()
{
if (!$this->bodyEncoded ||
!in_array(strtolower($this->getHeader('content-encoding')), array('gzip', 'deflate'))
) {
return $this->body;
} else {
if (extension_loaded('mbstring') && (2 & ini_get('mbstring.func_overload'))) {
$oldEncoding = mb_internal_encoding();
mb_internal_encoding('iso-8859-1');
}
try {
switch (strtolower($this->getHeader('content-encoding'))) {
case 'gzip':
$decoded = self::decodeGzip($this->body);
break;
case 'deflate':
$decoded = self::decodeDeflate($this->body);
}
} catch (Exception $e) {
}
if (!empty($oldEncoding)) {
mb_internal_encoding($oldEncoding);
}
if (!empty($e)) {
throw $e;
}
return $decoded;
}
}
/**
* Get the HTTP version of the response
*
* @return string
*/
public function getVersion()
{
return $this->version;
}
/**
* Decodes the message-body encoded by gzip
*
* The real decoding work is done by gzinflate() built-in function, this
* method only parses the header and checks data for compliance with
* RFC 1952
*
* @param string gzip-encoded data
* @return string decoded data
* @throws HTTP_Request2_Exception
* @link http://tools.ietf.org/html/rfc1952
*/
public static function decodeGzip($data)
{
$length = strlen($data);
// If it doesn't look like gzip-encoded data, don't bother
if (18 > $length || strcmp(substr($data, 0, 2), "\x1f\x8b")) {
return $data;
}
if (!function_exists('gzinflate')) {
throw new HTTP_Request2_Exception('Unable to decode body: gzip extension not available');
}
$method = ord(substr($data, 2, 1));
if (8 != $method) {
throw new HTTP_Request2_Exception('Error parsing gzip header: unknown compression method');
}
$flags = ord(substr($data, 3, 1));
if ($flags & 224) {
throw new HTTP_Request2_Exception('Error parsing gzip header: reserved bits are set');
}
// header is 10 bytes minimum. may be longer, though.
$headerLength = 10;
// extra fields, need to skip 'em
if ($flags & 4) {
if ($length - $headerLength - 2 < 8) {
throw new HTTP_Request2_Exception('Error parsing gzip header: data too short');
}
$extraLength = unpack('v', substr($data, 10, 2));
if ($length - $headerLength - 2 - $extraLength[1] < 8) {
throw new HTTP_Request2_Exception('Error parsing gzip header: data too short');
}
$headerLength += $extraLength[1] + 2;
}
// file name, need to skip that
if ($flags & 8) {
if ($length - $headerLength - 1 < 8) {
throw new HTTP_Request2_Exception('Error parsing gzip header: data too short');
}
$filenameLength = strpos(substr($data, $headerLength), chr(0));
if (false === $filenameLength || $length - $headerLength - $filenameLength - 1 < 8) {
throw new HTTP_Request2_Exception('Error parsing gzip header: data too short');
}
$headerLength += $filenameLength + 1;
}
// comment, need to skip that also
if ($flags & 16) {
if ($length - $headerLength - 1 < 8) {
throw new HTTP_Request2_Exception('Error parsing gzip header: data too short');
}
$commentLength = strpos(substr($data, $headerLength), chr(0));
if (false === $commentLength || $length - $headerLength - $commentLength - 1 < 8) {
throw new HTTP_Request2_Exception('Error parsing gzip header: data too short');
}
$headerLength += $commentLength + 1;
}
// have a CRC for header. let's check
if ($flags & 2) {
if ($length - $headerLength - 2 < 8) {
throw new HTTP_Request2_Exception('Error parsing gzip header: data too short');
}
$crcReal = 0xffff & crc32(substr($data, 0, $headerLength));
$crcStored = unpack('v', substr($data, $headerLength, 2));
if ($crcReal != $crcStored[1]) {
throw new HTTP_Request2_Exception('Header CRC check failed');
}
$headerLength += 2;
}
// unpacked data CRC and size at the end of encoded data
$tmp = unpack('V2', substr($data, -8));
$dataCrc = $tmp[1];
$dataSize = $tmp[2];
// finally, call the gzinflate() function
// don't pass $dataSize to gzinflate, see bugs #13135, #14370
$unpacked = gzinflate(substr($data, $headerLength, -8));
if (false === $unpacked) {
throw new HTTP_Request2_Exception('gzinflate() call failed');
} elseif ($dataSize != strlen($unpacked)) {
throw new HTTP_Request2_Exception('Data size check failed');
} elseif ((0xffffffff & $dataCrc) != (0xffffffff & crc32($unpacked))) {
throw new HTTP_Request2_Exception('Data CRC check failed');
}
return $unpacked;
}
/**
* Decodes the message-body encoded by deflate
*
* @param string deflate-encoded data
* @return string decoded data
* @throws HTTP_Request2_Exception
*/
public static function decodeDeflate($data)
{
if (!function_exists('gzuncompress')) {
throw new HTTP_Request2_Exception('Unable to decode body: gzip extension not available');
}
// RFC 2616 defines 'deflate' encoding as zlib format from RFC 1950,
// while many applications send raw deflate stream from RFC 1951.
// We should check for presence of zlib header and use gzuncompress() or
// gzinflate() as needed. See bug #15305
$header = unpack('n', substr($data, 0, 2));
return (0 == $header[1] % 31)? gzuncompress($data): gzinflate($data);
}
}
?>