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// Copyright 2012 The Chromium Authors
// 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/files/file_util.h"
#include "base/functional/bind.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "base/task/thread_pool.h"
#include "base/threading/thread_restrictions.h"
#include "net/base/filename_util.h"
#include "net/base/net_errors.h"
#include "net/base/url_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"
namespace net {
namespace {
const char kMockHostname[] = "mock.http";
const base::FilePath::CharType kMockHeaderFileSuffix[] =
FILE_PATH_LITERAL(".mock-http-headers");
class MockJobInterceptor : public 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)
: base_path_(base_path),
map_all_requests_to_base_path_(map_all_requests_to_base_path) {}
MockJobInterceptor(const MockJobInterceptor&) = delete;
MockJobInterceptor& operator=(const MockJobInterceptor&) = delete;
~MockJobInterceptor() override = default;
// URLRequestJobFactory::ProtocolHandler implementation
std::unique_ptr<URLRequestJob> MaybeInterceptRequest(
URLRequest* request) const override {
return std::make_unique<URLRequestMockHTTPJob>(
request,
map_all_requests_to_base_path_ ? base_path_ : GetOnDiskPath(request));
}
private:
base::FilePath GetOnDiskPath(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(FilePathToFileURL(base_path_));
std::string url = file_url.spec() + request->url().path();
base::FilePath file_path;
FileURLToFilePath(GURL(url), &file_path);
return file_path;
}
const base::FilePath base_path_;
const bool map_all_requests_to_base_path_;
};
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;
}
// For a given file |path| and |scheme|, return the URL served by the
// URlRequestMockHTTPJob.
GURL GetMockUrlForScheme(const std::string& path, const std::string& scheme) {
return GURL(scheme + "://" + kMockHostname + "/" + path);
}
} // namespace
// static
void URLRequestMockHTTPJob::AddUrlHandlers(const base::FilePath& base_path) {
// Add kMockHostname to URLRequestFilter, for both HTTP and HTTPS.
URLRequestFilter* filter = URLRequestFilter::GetInstance();
filter->AddHostnameInterceptor("http", kMockHostname,
CreateInterceptor(base_path));
filter->AddHostnameInterceptor("https", kMockHostname,
CreateInterceptor(base_path));
}
// static
GURL URLRequestMockHTTPJob::GetMockUrl(const std::string& path) {
return GetMockUrlForScheme(path, "http");
}
// static
GURL URLRequestMockHTTPJob::GetMockHttpsUrl(const std::string& path) {
return GetMockUrlForScheme(path, "https");
}
// static
std::unique_ptr<URLRequestInterceptor> URLRequestMockHTTPJob::CreateInterceptor(
const base::FilePath& base_path) {
return std::make_unique<MockJobInterceptor>(base_path, false);
}
// static
std::unique_ptr<URLRequestInterceptor>
URLRequestMockHTTPJob::CreateInterceptorForSingleFile(
const base::FilePath& file) {
return std::make_unique<MockJobInterceptor>(file, true);
}
URLRequestMockHTTPJob::URLRequestMockHTTPJob(URLRequest* request,
const base::FilePath& file_path)
: URLRequestTestJobBackedByFile(
request,
file_path,
base::ThreadPool::CreateTaskRunner({base::MayBlock()})) {}
URLRequestMockHTTPJob::~URLRequestMockHTTPJob() = default;
// Public virtual version.
void URLRequestMockHTTPJob::GetResponseInfo(HttpResponseInfo* info) {
// Forward to private const version.
GetResponseInfoConst(info);
}
bool URLRequestMockHTTPJob::IsRedirectResponse(
GURL* location,
int* http_status_code,
bool* insecure_scheme_was_upgraded) {
// Override the URLRequestTestJobBackedByFile implementation to invoke the
// default one based on HttpResponseInfo.
return URLRequestJob::IsRedirectResponse(location, http_status_code,
insecure_scheme_was_upgraded);
}
void URLRequestMockHTTPJob::OnReadComplete(net::IOBuffer* buffer, int result) {
if (result >= 0)
total_received_bytes_ += result;
}
// Public virtual version.
void URLRequestMockHTTPJob::Start() {
base::ThreadPool::PostTaskAndReplyWithResult(
FROM_HERE, {base::MayBlock()}, base::BindOnce(&DoFileIO, file_path_),
base::BindOnce(&URLRequestMockHTTPJob::SetHeadersAndStart,
weak_ptr_factory_.GetWeakPtr()));
}
void URLRequestMockHTTPJob::SetHeadersAndStart(const std::string& raw_headers) {
raw_headers_ = raw_headers;
// Handle CRLF line-endings.
base::ReplaceSubstringsAfterOffset(&raw_headers_, 0, "\r\n", "\n");
// ParseRawHeaders expects \0 to end each header line.
base::ReplaceSubstringsAfterOffset(
&raw_headers_, 0, "\n", base::StringPiece("\0", 1));
total_received_bytes_ += raw_headers_.size();
URLRequestTestJobBackedByFile::Start();
}
// Private const version.
void URLRequestMockHTTPJob::GetResponseInfoConst(HttpResponseInfo* info) const {
info->headers = base::MakeRefCounted<HttpResponseHeaders>(raw_headers_);
}
int64_t URLRequestMockHTTPJob::GetTotalReceivedBytes() const {
return total_received_bytes_;
}
bool URLRequestMockHTTPJob::GetMimeType(std::string* mime_type) const {
HttpResponseInfo info;
GetResponseInfoConst(&info);
return info.headers.get() && info.headers->GetMimeType(mime_type);
}
bool URLRequestMockHTTPJob::GetCharset(std::string* charset) {
HttpResponseInfo info;
GetResponseInfo(&info);
return info.headers.get() && info.headers->GetCharset(charset);
}
} // namespace net
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