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// Copyright 2016 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.
#ifndef COMPONENTS_SAFE_BROWSING_DB_V4_PROTOCOL_MANAGER_UTIL_H_
#define COMPONENTS_SAFE_BROWSING_DB_V4_PROTOCOL_MANAGER_UTIL_H_
// A class that implements the stateless methods used by the GetHashUpdate and
// GetFullHash stubby calls made by Chrome using the SafeBrowsing V4 protocol.
#include <string>
#include "base/gtest_prod_util.h"
#include "net/url_request/url_request_status.h"
#include "url/gurl.h"
namespace safe_browsing {
// Config passed to the constructor of a V4 protocol manager.
struct V4ProtocolConfig {
// The safe browsing client name sent in each request.
std::string client_name;
// Current product version sent in each request.
std::string version;
// The Google API key.
std::string key_param;
};
class V4ProtocolManagerUtil {
public:
// Record HTTP response code when there's no error in fetching an HTTP
// request, and the error code, when there is.
// |metric_name| is the name of the UMA metric to record the response code or
// error code against, |status| represents the status of the HTTP request, and
// |response code| represents the HTTP response code received from the server.
static void RecordHttpResponseOrErrorCode(const char* metric_name,
const net::URLRequestStatus& status,
int response_code);
// Generates a Pver4 request URL.
// |request_base64| is the serialized request protocol buffer encoded in
// base 64.
// |method_name| is the name of the method to call, as specified in the proto,
// |config| is an instance of V4ProtocolConfig that stores the client config.
static GURL GetRequestUrl(const std::string& request_base64,
const std::string& method_name,
const V4ProtocolConfig& config);
// Worker function for calculating the backoff times.
// |multiplier| is doubled for each consecutive error after the
// first, and |error_count| is incremented with each call.
static base::TimeDelta GetNextBackOffInterval(size_t* error_count,
size_t* multiplier);
private:
V4ProtocolManagerUtil() {};
FRIEND_TEST_ALL_PREFIXES(SafeBrowsingV4ProtocolManagerUtilTest,
TestBackOffLogic);
FRIEND_TEST_ALL_PREFIXES(SafeBrowsingV4ProtocolManagerUtilTest,
TestGetRequestUrl);
// Composes a URL using |prefix|, |method| (e.g.: encodedFullHashes).
// |request_base64|, |client_id|, |version| and |key_param|. |prefix|
// should contain the entire url prefix including scheme, host and path.
static std::string ComposeUrl(const std::string& prefix,
const std::string& method,
const std::string& request_base64,
const std::string& client_id,
const std::string& version,
const std::string& key_param);
DISALLOW_COPY_AND_ASSIGN(V4ProtocolManagerUtil);
};
} // namespace safe_browsing
#endif // COMPONENTS_SAFE_BROWSING_DB_V4_PROTOCOL_MANAGER_UTIL_H_
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