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// Copyright 2014 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 "components/update_client/utils.h"
#include <stdint.h>
#include <cmath>
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/guid.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_piece.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "base/sys_info.h"
#include "base/win/windows_version.h"
#include "components/crx_file/id_util.h"
#include "components/update_client/configurator.h"
#include "components/update_client/crx_update_item.h"
#include "components/update_client/update_client.h"
#include "components/update_client/update_query_params.h"
#include "net/base/load_flags.h"
#include "net/url_request/url_fetcher.h"
#include "net/url_request/url_request_context_getter.h"
#include "net/url_request/url_request_status.h"
namespace update_client {
namespace {
// Returns the amount of physical memory in GB, rounded to the nearest GB.
int GetPhysicalMemoryGB() {
const double kOneGB = 1024 * 1024 * 1024;
const int64_t phys_mem = base::SysInfo::AmountOfPhysicalMemory();
return static_cast<int>(std::floor(0.5 + phys_mem / kOneGB));
}
// Produces an extension-like friendly id.
std::string HexStringToID(const std::string& hexstr) {
std::string id;
for (size_t i = 0; i < hexstr.size(); ++i) {
int val = 0;
if (base::HexStringToInt(
base::StringPiece(hexstr.begin() + i, hexstr.begin() + i + 1),
&val)) {
id.append(1, val + 'a');
} else {
id.append(1, 'a');
}
}
DCHECK(crx_file::id_util::IdIsValid(id));
return id;
}
} // namespace
std::string BuildProtocolRequest(const std::string& browser_version,
const std::string& channel,
const std::string& lang,
const std::string& os_long_name,
const std::string& request_body,
const std::string& additional_attributes) {
const std::string prod_id(
UpdateQueryParams::GetProdIdString(UpdateQueryParams::CHROME));
std::string request(
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
"<request protocol=\"3.0\" ");
if (!additional_attributes.empty())
base::StringAppendF(&request, "%s ", additional_attributes.c_str());
// Chrome version and platform information.
base::StringAppendF(
&request,
"version=\"%s-%s\" prodversion=\"%s\" "
"requestid=\"{%s}\" lang=\"%s\" updaterchannel=\"%s\" prodchannel=\"%s\" "
"os=\"%s\" arch=\"%s\" nacl_arch=\"%s\"",
prod_id.c_str(),
browser_version.c_str(), // "version"
browser_version.c_str(), // "prodversion"
base::GenerateGUID().c_str(), // "requestid"
lang.c_str(), // "lang",
channel.c_str(), // "updaterchannel"
channel.c_str(), // "prodchannel"
UpdateQueryParams::GetOS(), // "os"
UpdateQueryParams::GetArch(), // "arch"
UpdateQueryParams::GetNaclArch()); // "nacl_arch"
#if defined(OS_WIN)
const bool is_wow64(base::win::OSInfo::GetInstance()->wow64_status() ==
base::win::OSInfo::WOW64_ENABLED);
if (is_wow64)
base::StringAppendF(&request, " wow64=\"1\"");
#endif
base::StringAppendF(&request, ">");
// HW platform information.
base::StringAppendF(&request, "<hw physmemory=\"%d\"/>",
GetPhysicalMemoryGB()); // "physmem" in GB.
// OS version and platform information.
base::StringAppendF(
&request, "<os platform=\"%s\" version=\"%s\" arch=\"%s\"/>",
os_long_name.c_str(), // "platform"
base::SysInfo().OperatingSystemVersion().c_str(), // "version"
base::SysInfo().OperatingSystemArchitecture().c_str()); // "arch"
// The actual payload of the request.
base::StringAppendF(&request, "%s</request>", request_body.c_str());
return request;
}
scoped_ptr<net::URLFetcher> SendProtocolRequest(
const GURL& url,
const std::string& protocol_request,
net::URLFetcherDelegate* url_fetcher_delegate,
net::URLRequestContextGetter* url_request_context_getter) {
scoped_ptr<net::URLFetcher> url_fetcher = net::URLFetcher::Create(
0, url, net::URLFetcher::POST, url_fetcher_delegate);
url_fetcher->SetUploadData("application/xml", protocol_request);
url_fetcher->SetRequestContext(url_request_context_getter);
url_fetcher->SetLoadFlags(net::LOAD_DO_NOT_SEND_COOKIES |
net::LOAD_DO_NOT_SAVE_COOKIES |
net::LOAD_DISABLE_CACHE);
url_fetcher->SetAutomaticallyRetryOn5xx(false);
url_fetcher->Start();
return url_fetcher;
}
bool FetchSuccess(const net::URLFetcher& fetcher) {
return GetFetchError(fetcher) == 0;
}
int GetFetchError(const net::URLFetcher& fetcher) {
const net::URLRequestStatus::Status status(fetcher.GetStatus().status());
switch (status) {
case net::URLRequestStatus::IO_PENDING:
case net::URLRequestStatus::CANCELED:
// Network status is a small positive number.
return status;
case net::URLRequestStatus::SUCCESS: {
// Response codes are positive numbers, greater than 100.
const int response_code(fetcher.GetResponseCode());
if (response_code == 200)
return 0;
else
return response_code ? response_code : -1;
}
case net::URLRequestStatus::FAILED: {
// Network errors are small negative numbers.
const int error = fetcher.GetStatus().error();
return error ? error : -1;
}
default:
return -1;
}
}
bool HasDiffUpdate(const CrxUpdateItem* update_item) {
return !update_item->crx_diffurls.empty();
}
bool IsHttpServerError(int status_code) {
return 500 <= status_code && status_code < 600;
}
bool DeleteFileAndEmptyParentDirectory(const base::FilePath& filepath) {
if (!base::DeleteFile(filepath, false))
return false;
const base::FilePath dirname(filepath.DirName());
if (!base::IsDirectoryEmpty(dirname))
return true;
return base::DeleteFile(dirname, false);
}
std::string GetCrxComponentID(const CrxComponent& component) {
const size_t kCrxIdSize = 16;
CHECK_GE(component.pk_hash.size(), kCrxIdSize);
return HexStringToID(base::ToLowerASCII(
base::HexEncode(&component.pk_hash[0], kCrxIdSize)));
}
} // namespace update_client
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