Merge Chromium + Blink git repositories
[chromium-blink-merge.git] / components / update_client / utils.cc
blob2b660503065abfd8cca23606010f7728b5b43cc0
1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "components/update_client/utils.h"
7 #include <stdint.h>
8 #include <cmath>
10 #include "base/files/file_path.h"
11 #include "base/files/file_util.h"
12 #include "base/guid.h"
13 #include "base/strings/string_number_conversions.h"
14 #include "base/strings/string_piece.h"
15 #include "base/strings/string_util.h"
16 #include "base/strings/stringprintf.h"
17 #include "base/sys_info.h"
18 #include "base/win/windows_version.h"
19 #include "components/crx_file/id_util.h"
20 #include "components/update_client/configurator.h"
21 #include "components/update_client/crx_update_item.h"
22 #include "components/update_client/update_client.h"
23 #include "components/update_client/update_query_params.h"
24 #include "net/base/load_flags.h"
25 #include "net/url_request/url_fetcher.h"
26 #include "net/url_request/url_request_context_getter.h"
27 #include "net/url_request/url_request_status.h"
29 namespace update_client {
31 namespace {
33 // Returns the amount of physical memory in GB, rounded to the nearest GB.
34 int GetPhysicalMemoryGB() {
35 const double kOneGB = 1024 * 1024 * 1024;
36 const int64_t phys_mem = base::SysInfo::AmountOfPhysicalMemory();
37 return static_cast<int>(std::floor(0.5 + phys_mem / kOneGB));
40 // Produces an extension-like friendly id.
41 std::string HexStringToID(const std::string& hexstr) {
42 std::string id;
43 for (size_t i = 0; i < hexstr.size(); ++i) {
44 int val = 0;
45 if (base::HexStringToInt(
46 base::StringPiece(hexstr.begin() + i, hexstr.begin() + i + 1),
47 &val)) {
48 id.append(1, val + 'a');
49 } else {
50 id.append(1, 'a');
54 DCHECK(crx_file::id_util::IdIsValid(id));
56 return id;
59 } // namespace
61 std::string BuildProtocolRequest(const std::string& browser_version,
62 const std::string& channel,
63 const std::string& lang,
64 const std::string& os_long_name,
65 const std::string& request_body,
66 const std::string& additional_attributes) {
67 const std::string prod_id(
68 UpdateQueryParams::GetProdIdString(UpdateQueryParams::CHROME));
70 std::string request(
71 "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
72 "<request protocol=\"3.0\" ");
74 if (!additional_attributes.empty())
75 base::StringAppendF(&request, "%s ", additional_attributes.c_str());
77 // Chrome version and platform information.
78 base::StringAppendF(
79 &request,
80 "version=\"%s-%s\" prodversion=\"%s\" "
81 "requestid=\"{%s}\" lang=\"%s\" updaterchannel=\"%s\" prodchannel=\"%s\" "
82 "os=\"%s\" arch=\"%s\" nacl_arch=\"%s\"",
83 prod_id.c_str(),
84 browser_version.c_str(), // "version"
85 browser_version.c_str(), // "prodversion"
86 base::GenerateGUID().c_str(), // "requestid"
87 lang.c_str(), // "lang",
88 channel.c_str(), // "updaterchannel"
89 channel.c_str(), // "prodchannel"
90 UpdateQueryParams::GetOS(), // "os"
91 UpdateQueryParams::GetArch(), // "arch"
92 UpdateQueryParams::GetNaclArch()); // "nacl_arch"
93 #if defined(OS_WIN)
94 const bool is_wow64(base::win::OSInfo::GetInstance()->wow64_status() ==
95 base::win::OSInfo::WOW64_ENABLED);
96 if (is_wow64)
97 base::StringAppendF(&request, " wow64=\"1\"");
98 #endif
99 base::StringAppendF(&request, ">");
101 // HW platform information.
102 base::StringAppendF(&request, "<hw physmemory=\"%d\"/>",
103 GetPhysicalMemoryGB()); // "physmem" in GB.
105 // OS version and platform information.
106 base::StringAppendF(
107 &request, "<os platform=\"%s\" version=\"%s\" arch=\"%s\"/>",
108 os_long_name.c_str(), // "platform"
109 base::SysInfo().OperatingSystemVersion().c_str(), // "version"
110 base::SysInfo().OperatingSystemArchitecture().c_str()); // "arch"
112 // The actual payload of the request.
113 base::StringAppendF(&request, "%s</request>", request_body.c_str());
115 return request;
118 scoped_ptr<net::URLFetcher> SendProtocolRequest(
119 const GURL& url,
120 const std::string& protocol_request,
121 net::URLFetcherDelegate* url_fetcher_delegate,
122 net::URLRequestContextGetter* url_request_context_getter) {
123 scoped_ptr<net::URLFetcher> url_fetcher = net::URLFetcher::Create(
124 0, url, net::URLFetcher::POST, url_fetcher_delegate);
126 url_fetcher->SetUploadData("application/xml", protocol_request);
127 url_fetcher->SetRequestContext(url_request_context_getter);
128 url_fetcher->SetLoadFlags(net::LOAD_DO_NOT_SEND_COOKIES |
129 net::LOAD_DO_NOT_SAVE_COOKIES |
130 net::LOAD_DISABLE_CACHE);
131 url_fetcher->SetAutomaticallyRetryOn5xx(false);
132 url_fetcher->Start();
134 return url_fetcher;
137 bool FetchSuccess(const net::URLFetcher& fetcher) {
138 return GetFetchError(fetcher) == 0;
141 int GetFetchError(const net::URLFetcher& fetcher) {
142 const net::URLRequestStatus::Status status(fetcher.GetStatus().status());
143 switch (status) {
144 case net::URLRequestStatus::IO_PENDING:
145 case net::URLRequestStatus::CANCELED:
146 // Network status is a small positive number.
147 return status;
149 case net::URLRequestStatus::SUCCESS: {
150 // Response codes are positive numbers, greater than 100.
151 const int response_code(fetcher.GetResponseCode());
152 if (response_code == 200)
153 return 0;
154 else
155 return response_code ? response_code : -1;
158 case net::URLRequestStatus::FAILED: {
159 // Network errors are small negative numbers.
160 const int error = fetcher.GetStatus().error();
161 return error ? error : -1;
164 default:
165 return -1;
169 bool HasDiffUpdate(const CrxUpdateItem* update_item) {
170 return !update_item->crx_diffurls.empty();
173 bool IsHttpServerError(int status_code) {
174 return 500 <= status_code && status_code < 600;
177 bool DeleteFileAndEmptyParentDirectory(const base::FilePath& filepath) {
178 if (!base::DeleteFile(filepath, false))
179 return false;
181 const base::FilePath dirname(filepath.DirName());
182 if (!base::IsDirectoryEmpty(dirname))
183 return true;
185 return base::DeleteFile(dirname, false);
188 std::string GetCrxComponentID(const CrxComponent& component) {
189 const size_t kCrxIdSize = 16;
190 CHECK_GE(component.pk_hash.size(), kCrxIdSize);
191 return HexStringToID(base::ToLowerASCII(
192 base::HexEncode(&component.pk_hash[0], kCrxIdSize)));
195 } // namespace update_client