142 lines
4.0 KiB
C++
142 lines
4.0 KiB
C++
// Copyright 2014 Google Inc. All rights reserved.
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//
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file or at
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// https://developers.google.com/open-source/licenses/bsd
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#include "packager/media/base/http_key_fetcher.h"
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#include <curl/curl.h>
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#include "packager/base/strings/stringprintf.h"
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#include "packager/base/synchronization/lock.h"
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namespace edash_packager {
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namespace {
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const char kUserAgentString[] = "edash-packager-http_fetcher/1.0";
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// Scoped CURL implementation which cleans up itself when goes out of scope.
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class ScopedCurl {
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public:
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ScopedCurl() { ptr_ = curl_easy_init(); }
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~ScopedCurl() {
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if (ptr_)
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curl_easy_cleanup(ptr_);
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}
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CURL* get() { return ptr_; }
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private:
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CURL* ptr_;
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DISALLOW_COPY_AND_ASSIGN(ScopedCurl);
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};
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size_t AppendToString(char* ptr, size_t size, size_t nmemb, std::string* response) {
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DCHECK(ptr);
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DCHECK(response);
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const size_t total_size = size * nmemb;
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response->append(ptr, total_size);
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return total_size;
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}
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class LibCurlInitializer {
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public:
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LibCurlInitializer() : initialized_(false) {
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base::AutoLock lock(lock_);
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if (!initialized_) {
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curl_global_init(CURL_GLOBAL_DEFAULT);
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initialized_ = true;
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}
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}
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~LibCurlInitializer() {
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base::AutoLock lock(lock_);
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if (initialized_) {
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curl_global_cleanup();
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initialized_ = false;
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}
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}
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private:
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base::Lock lock_;
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bool initialized_;
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DISALLOW_COPY_AND_ASSIGN(LibCurlInitializer);
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};
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} // namespace
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namespace media {
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HttpKeyFetcher::HttpKeyFetcher() : timeout_in_seconds_(0) {}
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HttpKeyFetcher::HttpKeyFetcher(uint32_t timeout_in_seconds)
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: timeout_in_seconds_(timeout_in_seconds) {}
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HttpKeyFetcher::~HttpKeyFetcher() {}
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Status HttpKeyFetcher::FetchKeys(const std::string& url,
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const std::string& request,
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std::string* response) {
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return Post(url, request, response);
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}
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Status HttpKeyFetcher::Get(const std::string& path, std::string* response) {
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return FetchInternal(GET, path, "", response);
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}
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Status HttpKeyFetcher::Post(const std::string& path,
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const std::string& data,
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std::string* response) {
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return FetchInternal(POST, path, data, response);
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}
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Status HttpKeyFetcher::FetchInternal(HttpMethod method,
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const std::string& path,
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const std::string& data,
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std::string* response) {
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DCHECK(method == GET || method == POST);
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static LibCurlInitializer lib_curl_initializer;
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ScopedCurl scoped_curl;
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CURL* curl = scoped_curl.get();
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if (!curl) {
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LOG(ERROR) << "curl_easy_init() failed.";
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return Status(error::HTTP_FAILURE, "curl_easy_init() failed.");
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}
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response->clear();
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curl_easy_setopt(curl, CURLOPT_URL, path.c_str());
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curl_easy_setopt(curl, CURLOPT_USERAGENT, kUserAgentString);
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curl_easy_setopt(curl, CURLOPT_TIMEOUT, timeout_in_seconds_);
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curl_easy_setopt(curl, CURLOPT_FAILONERROR, 1L);
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curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
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curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, AppendToString);
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curl_easy_setopt(curl, CURLOPT_WRITEDATA, response);
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if (method == POST) {
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curl_easy_setopt(curl, CURLOPT_POSTFIELDS, data.c_str());
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curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, data.size());
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}
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CURLcode res = curl_easy_perform(curl);
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if (res != CURLE_OK) {
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std::string error_message = base::StringPrintf(
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"curl_easy_perform() failed: %s.", curl_easy_strerror(res));
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if (res == CURLE_HTTP_RETURNED_ERROR) {
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long response_code = 0;
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curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &response_code);
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error_message += base::StringPrintf(" Response code: %ld.", response_code);
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}
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LOG(ERROR) << error_message;
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return Status(
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res == CURLE_OPERATION_TIMEDOUT ? error::TIME_OUT : error::HTTP_FAILURE,
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error_message);
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}
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return Status::OK;
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}
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} // namespace media
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} // namespace edash_packager
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