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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "net/test/url_request/url_request_mock_http_job.h"
#include "base/file_util.h"
#include "base/message_loop/message_loop.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "base/task_runner_util.h"
#include "base/threading/sequenced_worker_pool.h"
#include "base/threading/thread_restrictions.h"
#include "net/base/filename_util.h"
#include "net/http/http_response_headers.h"
#include "net/url_request/url_request_filter.h"
#include "net/url_request/url_request_interceptor.h"
const char kMockHostname[] = "mock.http";
const base::FilePath::CharType kMockHeaderFileSuffix[] =
FILE_PATH_LITERAL(".mock-http-headers");
namespace net {
namespace {
class MockJobInterceptor : public net::URLRequestInterceptor {
public:
// When |map_all_requests_to_base_path| is true, all request should return the
// contents of the file at |base_path|. When |map_all_requests_to_base_path|
// is false, |base_path| is the file path leading to the root of the directory
// to use as the root of the HTTP server.
MockJobInterceptor(
const base::FilePath& base_path,
bool map_all_requests_to_base_path,
const scoped_refptr<base::SequencedWorkerPool>& worker_pool)
: base_path_(base_path),
map_all_requests_to_base_path_(map_all_requests_to_base_path),
worker_pool_(worker_pool) {}
virtual ~MockJobInterceptor() {}
// net::URLRequestJobFactory::ProtocolHandler implementation
virtual net::URLRequestJob* MaybeInterceptRequest(
net::URLRequest* request,
net::NetworkDelegate* network_delegate) const OVERRIDE {
return new URLRequestMockHTTPJob(
request,
network_delegate,
map_all_requests_to_base_path_ ? base_path_ : GetOnDiskPath(request),
worker_pool_->GetTaskRunnerWithShutdownBehavior(
base::SequencedWorkerPool::SKIP_ON_SHUTDOWN));
}
private:
base::FilePath GetOnDiskPath(net::URLRequest* request) const {
// Conceptually we just want to "return base_path_ + request->url().path()".
// But path in the request URL is in URL space (i.e. %-encoded spaces).
// So first we convert base FilePath to a URL, then append the URL
// path to that, and convert the final URL back to a FilePath.
GURL file_url(net::FilePathToFileURL(base_path_));
std::string url = file_url.spec() + request->url().path();
base::FilePath file_path;
net::FileURLToFilePath(GURL(url), &file_path);
return file_path;
}
const base::FilePath base_path_;
const bool map_all_requests_to_base_path_;
const scoped_refptr<base::SequencedWorkerPool> worker_pool_;
DISALLOW_COPY_AND_ASSIGN(MockJobInterceptor);
};
std::string DoFileIO(const base::FilePath& file_path) {
base::FilePath header_file =
base::FilePath(file_path.value() + kMockHeaderFileSuffix);
if (!base::PathExists(header_file)) {
// If there is no mock-http-headers file, fake a 200 OK.
return "HTTP/1.0 200 OK\n";
}
std::string raw_headers;
base::ReadFileToString(header_file, &raw_headers);
return raw_headers;
}
} // namespace
// static
void URLRequestMockHTTPJob::AddUrlHandler(
const base::FilePath& base_path,
const scoped_refptr<base::SequencedWorkerPool>& worker_pool) {
// Add kMockHostname to net::URLRequestFilter.
net::URLRequestFilter* filter = net::URLRequestFilter::GetInstance();
filter->AddHostnameInterceptor(
"http", kMockHostname, CreateInterceptor(base_path, worker_pool));
}
// static
void URLRequestMockHTTPJob::AddHostnameToFileHandler(
const std::string& hostname,
const base::FilePath& file,
const scoped_refptr<base::SequencedWorkerPool>& worker_pool) {
net::URLRequestFilter* filter = net::URLRequestFilter::GetInstance();
filter->AddHostnameInterceptor(
"http", hostname, CreateInterceptorForSingleFile(file, worker_pool));
}
// static
GURL URLRequestMockHTTPJob::GetMockUrl(const base::FilePath& path) {
std::string url = "http://";
url.append(kMockHostname);
url.append("/");
std::string path_str = path.MaybeAsASCII();
DCHECK(!path_str.empty()); // We only expect ASCII paths in tests.
url.append(path_str);
return GURL(url);
}
// static
scoped_ptr<net::URLRequestInterceptor> URLRequestMockHTTPJob::CreateInterceptor(
const base::FilePath& base_path,
const scoped_refptr<base::SequencedWorkerPool>& worker_pool) {
return scoped_ptr<net::URLRequestInterceptor>(
new MockJobInterceptor(base_path, false, worker_pool));
}
// static
scoped_ptr<net::URLRequestInterceptor>
URLRequestMockHTTPJob::CreateInterceptorForSingleFile(
const base::FilePath& file,
const scoped_refptr<base::SequencedWorkerPool>& worker_pool) {
return scoped_ptr<net::URLRequestInterceptor>(
new MockJobInterceptor(file, true, worker_pool));
}
URLRequestMockHTTPJob::URLRequestMockHTTPJob(
net::URLRequest* request,
net::NetworkDelegate* network_delegate,
const base::FilePath& file_path,
const scoped_refptr<base::TaskRunner>& task_runner)
: net::URLRequestFileJob(request, network_delegate, file_path, task_runner),
task_runner_(task_runner),
weak_ptr_factory_(this) {
}
URLRequestMockHTTPJob::~URLRequestMockHTTPJob() {
}
// Public virtual version.
void URLRequestMockHTTPJob::GetResponseInfo(net::HttpResponseInfo* info) {
// Forward to private const version.
GetResponseInfoConst(info);
}
bool URLRequestMockHTTPJob::IsRedirectResponse(GURL* location,
int* http_status_code) {
// Override the net::URLRequestFileJob implementation to invoke the default
// one based on HttpResponseInfo.
return net::URLRequestJob::IsRedirectResponse(location, http_status_code);
}
// Public virtual version.
void URLRequestMockHTTPJob::Start() {
base::PostTaskAndReplyWithResult(
task_runner_.get(),
FROM_HERE,
base::Bind(&DoFileIO, file_path_),
base::Bind(&URLRequestMockHTTPJob::GetRawHeaders,
weak_ptr_factory_.GetWeakPtr()));
}
void URLRequestMockHTTPJob::GetRawHeaders(std::string raw_headers) {
// Handle CRLF line-endings.
ReplaceSubstringsAfterOffset(&raw_headers, 0, "\r\n", "\n");
// ParseRawHeaders expects \0 to end each header line.
ReplaceSubstringsAfterOffset(&raw_headers, 0, "\n", std::string("\0", 1));
raw_headers_ = raw_headers;
URLRequestFileJob::Start();
}
// Private const version.
void URLRequestMockHTTPJob::GetResponseInfoConst(
net::HttpResponseInfo* info) const {
info->headers = new net::HttpResponseHeaders(raw_headers_);
}
bool URLRequestMockHTTPJob::GetMimeType(std::string* mime_type) const {
net::HttpResponseInfo info;
GetResponseInfoConst(&info);
return info.headers.get() && info.headers->GetMimeType(mime_type);
}
int URLRequestMockHTTPJob::GetResponseCode() const {
net::HttpResponseInfo info;
GetResponseInfoConst(&info);
// If we have headers, get the response code from them.
if (info.headers.get())
return info.headers->response_code();
return net::URLRequestJob::GetResponseCode();
}
bool URLRequestMockHTTPJob::GetCharset(std::string* charset) {
net::HttpResponseInfo info;
GetResponseInfo(&info);
return info.headers.get() && info.headers->GetCharset(charset);
}
} // namespace net
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