mirror of
https://bitbucket.org/jsuto/piler.git
synced 2025-11-03 14:52:27 +01:00
254 lines
8.6 KiB
PHP
254 lines
8.6 KiB
PHP
<?php
|
|
/*
|
|
* Copyright 2010 Google Inc.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
/**
|
|
* Curl based implementation of apiIO.
|
|
*
|
|
* @author Chris Chabot <chabotc@google.com>
|
|
* @author Chirag Shah <chirags@google.com>
|
|
*/
|
|
|
|
require_once 'apiCacheParser.php';
|
|
|
|
class apiCurlIO implements apiIO {
|
|
const CONNECTION_ESTABLISHED = "HTTP/1.0 200 Connection established\r\n\r\n";
|
|
const FORM_URLENCODED = 'application/x-www-form-urlencoded';
|
|
|
|
private static $ENTITY_HTTP_METHODS = array("POST" => null, "PUT" => null);
|
|
private static $HOP_BY_HOP = array(
|
|
'connection', 'keep-alive', 'proxy-authenticate', 'proxy-authorization',
|
|
'te', 'trailers', 'transfer-encoding', 'upgrade');
|
|
|
|
private static $DEFAULT_CURL_PARAMS = array (
|
|
CURLOPT_RETURNTRANSFER => true,
|
|
CURLOPT_FOLLOWLOCATION => 0,
|
|
CURLOPT_FAILONERROR => false,
|
|
CURLOPT_SSL_VERIFYPEER => true,
|
|
CURLOPT_HEADER => true,
|
|
);
|
|
|
|
/**
|
|
* Perform an authenticated / signed apiHttpRequest.
|
|
* This function takes the apiHttpRequest, calls apiAuth->sign on it
|
|
* (which can modify the request in what ever way fits the auth mechanism)
|
|
* and then calls apiCurlIO::makeRequest on the signed request
|
|
*
|
|
* @param apiHttpRequest $request
|
|
* @return apiHttpRequest The resulting HTTP response including the
|
|
* responseHttpCode, responseHeaders and responseBody.
|
|
*/
|
|
public function authenticatedRequest(apiHttpRequest $request) {
|
|
$request = apiClient::$auth->sign($request);
|
|
return $this->makeRequest($request);
|
|
}
|
|
|
|
/**
|
|
* Execute a apiHttpRequest
|
|
*
|
|
* @param apiHttpRequest $request the http request to be executed
|
|
* @return apiHttpRequest http request with the response http code, response
|
|
* headers and response body filled in
|
|
* @throws apiIOException on curl or IO error
|
|
*/
|
|
public function makeRequest(apiHttpRequest $request) {
|
|
// First, check to see if we have a valid cached version.
|
|
$cached = $this->getCachedRequest($request);
|
|
if ($cached !== false) {
|
|
if (apiCacheParser::mustRevalidate($cached)) {
|
|
$addHeaders = array();
|
|
if ($cached->getResponseHeader('etag')) {
|
|
// [13.3.4] If an entity tag has been provided by the origin server,
|
|
// we must use that entity tag in any cache-conditional request.
|
|
$addHeaders['If-None-Match'] = $cached->getResponseHeader('etag');
|
|
} elseif ($cached->getResponseHeader('date')) {
|
|
$addHeaders['If-Modified-Since'] = $cached->getResponseHeader('date');
|
|
}
|
|
|
|
$request->setRequestHeaders($addHeaders);
|
|
} else {
|
|
// No need to revalidate the request, return it directly
|
|
return $cached;
|
|
}
|
|
}
|
|
|
|
if (array_key_exists($request->getRequestMethod(),
|
|
self::$ENTITY_HTTP_METHODS)) {
|
|
$request = $this->processEntityRequest($request);
|
|
}
|
|
|
|
$ch = curl_init();
|
|
curl_setopt_array($ch, self::$DEFAULT_CURL_PARAMS);
|
|
curl_setopt($ch, CURLOPT_URL, $request->getUrl());
|
|
if ($request->getPostBody()) {
|
|
curl_setopt($ch, CURLOPT_POSTFIELDS, $request->getPostBody());
|
|
}
|
|
|
|
$requestHeaders = $request->getRequestHeaders();
|
|
if ($requestHeaders && is_array($requestHeaders)) {
|
|
$parsed = array();
|
|
foreach ($requestHeaders as $k => $v) {
|
|
$parsed[] = "$k: $v";
|
|
}
|
|
curl_setopt($ch, CURLOPT_HTTPHEADER, $parsed);
|
|
}
|
|
|
|
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $request->getRequestMethod());
|
|
curl_setopt($ch, CURLOPT_USERAGENT, $request->getUserAgent());
|
|
$respData = curl_exec($ch);
|
|
|
|
// Retry if certificates are missing.
|
|
if (curl_errno($ch) == CURLE_SSL_CACERT) {
|
|
error_log('SSL certificate problem, verify that the CA cert is OK.'
|
|
. ' Retrying with the CA cert bundle from google-api-php-client.');
|
|
curl_setopt($ch, CURLOPT_CAINFO, dirname(__FILE__) . '/cacerts.pem');
|
|
$respData = curl_exec($ch);
|
|
}
|
|
|
|
$respHeaderSize = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
|
|
$respHttpCode = (int) curl_getinfo($ch, CURLINFO_HTTP_CODE);
|
|
$curlErrorNum = curl_errno($ch);
|
|
$curlError = curl_error($ch);
|
|
curl_close($ch);
|
|
if ($curlErrorNum != CURLE_OK) {
|
|
throw new apiIOException("HTTP Error: ($respHttpCode) $curlError");
|
|
}
|
|
|
|
// Parse out the raw response into usable bits
|
|
list($responseHeaders, $responseBody) =
|
|
$this->parseHttpResponseBody($respData, $respHeaderSize);
|
|
|
|
if ($respHttpCode == 304 && $cached) {
|
|
// If the server responded NOT_MODIFIED, return the cached request.
|
|
if (isset($responseHeaders['connection'])) {
|
|
$hopByHop = array_merge(
|
|
self::$HOP_BY_HOP,
|
|
explode(',', $responseHeaders['connection'])
|
|
);
|
|
|
|
$endToEnd = array();
|
|
foreach($hopByHop as $key) {
|
|
if (isset($responseHeaders[$key])) {
|
|
$endToEnd[$key] = $responseHeaders[$key];
|
|
}
|
|
}
|
|
$cached->setResponseHeaders($endToEnd);
|
|
}
|
|
return $cached;
|
|
}
|
|
|
|
// Fill in the apiHttpRequest with the response values
|
|
$request->setResponseHttpCode($respHttpCode);
|
|
$request->setResponseHeaders($responseHeaders);
|
|
$request->setResponseBody($responseBody);
|
|
// Store the request in cache (the function checks to see if the request
|
|
// can actually be cached)
|
|
$this->setCachedRequest($request);
|
|
// And finally return it
|
|
return $request;
|
|
}
|
|
|
|
/**
|
|
* @visible for testing.
|
|
* Cache the response to an HTTP request if it is cacheable.
|
|
* @param apiHttpRequest $request
|
|
* @return bool Returns true if the insertion was successful.
|
|
* Otherwise, return false.
|
|
*/
|
|
public function setCachedRequest(apiHttpRequest $request) {
|
|
// Determine if the request is cacheable.
|
|
if (apiCacheParser::isResponseCacheable($request)) {
|
|
apiClient::$cache->set($request->getCacheKey(), $request);
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @visible for testing.
|
|
* @param apiHttpRequest $request
|
|
* @return apiHttpRequest|bool Returns the cached object or
|
|
* false if the operation was unsuccessful.
|
|
*/
|
|
public function getCachedRequest(apiHttpRequest $request) {
|
|
if (false == apiCacheParser::isRequestCacheable($request)) {
|
|
false;
|
|
}
|
|
|
|
return apiClient::$cache->get($request->getCacheKey());
|
|
}
|
|
|
|
/**
|
|
* @param $respData
|
|
* @param $headerSize
|
|
* @return array
|
|
*/
|
|
public function parseHttpResponseBody($respData, $headerSize) {
|
|
if (stripos($respData, self::CONNECTION_ESTABLISHED) !== false) {
|
|
$respData = str_ireplace(self::CONNECTION_ESTABLISHED, '', $respData);
|
|
}
|
|
|
|
$responseBody = substr($respData, $headerSize);
|
|
$responseHeaderLines = explode("\r\n", substr($respData, 0, $headerSize));
|
|
$responseHeaders = array();
|
|
|
|
foreach ($responseHeaderLines as $headerLine) {
|
|
if ($headerLine && strpos($headerLine, ':') !== false) {
|
|
list($header, $value) = explode(': ', $headerLine, 2);
|
|
$header = strtolower($header);
|
|
if (isset($responseHeaders[$header])) {
|
|
$responseHeaders[$header] .= "\n" . $value;
|
|
} else {
|
|
$responseHeaders[$header] = $value;
|
|
}
|
|
}
|
|
}
|
|
|
|
return array($responseHeaders, $responseBody);
|
|
}
|
|
|
|
/**
|
|
* @visible for testing
|
|
* Process an http request that contains an enclosed entity.
|
|
* @param apiHttpRequest $request
|
|
* @return apiHttpRequest Processed request with the enclosed entity.
|
|
*/
|
|
public function processEntityRequest(apiHttpRequest $request) {
|
|
$postBody = $request->getPostBody();
|
|
$contentType = $request->getRequestHeader("content-type");
|
|
|
|
// Set the default content-type as application/x-www-form-urlencoded.
|
|
if (false == $contentType) {
|
|
$contentType = self::FORM_URLENCODED;
|
|
$request->setRequestHeaders(array('content-type' => $contentType));
|
|
}
|
|
|
|
// Force the payload to match the content-type asserted in the header.
|
|
if ($contentType == self::FORM_URLENCODED && is_array($postBody)) {
|
|
$postBody = http_build_query($postBody, '', '&');
|
|
$request->setPostBody($postBody);
|
|
}
|
|
|
|
// Make sure the content-length header is set.
|
|
if (!$postBody || is_string($postBody)) {
|
|
$postsLength = strlen($postBody);
|
|
$request->setRequestHeaders(array('content-length' => $postsLength));
|
|
}
|
|
|
|
return $request;
|
|
}
|
|
} |