1 // Copyright 2013 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.
4
5 #include "chrome/browser/component_updater/component_updater_utils.h"
6
7 #include <cmath>
8
9 #include "base/file_util.h"
10 #include "base/files/file_path.h"
11 #include "base/guid.h"
12 #include "base/strings/string_number_conversions.h"
13 #include "base/strings/string_piece.h"
14 #include "base/strings/string_util.h"
15 #include "base/strings/stringprintf.h"
16 #include "base/sys_info.h"
17 #include "base/win/windows_version.h"
18 #include "chrome/browser/component_updater/component_updater_service.h"
19 #include "chrome/browser/component_updater/crx_update_item.h"
20 #include "chrome/browser/omaha_query_params/omaha_query_params.h"
21 #include "chrome/common/chrome_version_info.h"
22 #include "extensions/common/extension.h"
23 #include "net/base/load_flags.h"
24 #include "net/url_request/url_fetcher.h"
25 #include "net/url_request/url_request_context_getter.h"
26 #include "net/url_request/url_request_status.h"
27
28 namespace component_updater {
29
30 namespace {
31
32 // Returns the amount of physical memory in GB, rounded to the nearest GB.
GetPhysicalMemoryGB()33 int GetPhysicalMemoryGB() {
34 const double kOneGB = 1024 * 1024 * 1024;
35 const int64 phys_mem = base::SysInfo::AmountOfPhysicalMemory();
36 return static_cast<int>(std::floor(0.5 + phys_mem / kOneGB));
37 }
38
39 } // namespace
40
BuildProtocolRequest(const std::string & request_body,const std::string & additional_attributes)41 std::string BuildProtocolRequest(const std::string& request_body,
42 const std::string& additional_attributes) {
43 const std::string prod_id(chrome::OmahaQueryParams::GetProdIdString(
44 chrome::OmahaQueryParams::CHROME));
45 const chrome::VersionInfo chrome_version_info;
46 const std::string chrome_version(chrome_version_info.Version());
47
48 std::string request(
49 "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
50 "<request protocol=\"3.0\" ");
51
52 if (!additional_attributes.empty())
53 base::StringAppendF(&request, "%s ", additional_attributes.c_str());
54
55 // Chrome version and platform information.
56 base::StringAppendF(
57 &request,
58 "version=\"%s-%s\" prodversion=\"%s\" "
59 "requestid=\"{%s}\" lang=\"%s\" updaterchannel=\"%s\" prodchannel=\"%s\" "
60 "os=\"%s\" arch=\"%s\" nacl_arch=\"%s\"",
61 prod_id.c_str(),
62 chrome_version.c_str(), // "version"
63 chrome_version.c_str(), // "prodversion"
64 base::GenerateGUID().c_str(), // "requestid"
65 chrome::OmahaQueryParams::GetLang(), // "lang",
66 chrome::OmahaQueryParams::GetChannelString(), // "updaterchannel"
67 chrome::OmahaQueryParams::GetChannelString(), // "prodchannel"
68 chrome::OmahaQueryParams::GetOS(), // "os"
69 chrome::OmahaQueryParams::GetArch(), // "arch"
70 chrome::OmahaQueryParams::GetNaclArch()); // "nacl_arch"
71 #if defined(OS_WIN)
72 const bool is_wow64(base::win::OSInfo::GetInstance()->wow64_status() ==
73 base::win::OSInfo::WOW64_ENABLED);
74 if (is_wow64)
75 base::StringAppendF(&request, " wow64=\"1\"");
76 #endif
77 base::StringAppendF(&request, ">");
78
79 // HW platform information.
80 base::StringAppendF(&request,
81 "<hw physmemory=\"%d\"/>",
82 GetPhysicalMemoryGB()); // "physmem" in GB.
83
84 // OS version and platform information.
85 base::StringAppendF(
86 &request,
87 "<os platform=\"%s\" version=\"%s\" arch=\"%s\"/>",
88 chrome::VersionInfo().OSType().c_str(), // "platform"
89 base::SysInfo().OperatingSystemVersion().c_str(), // "version"
90 base::SysInfo().OperatingSystemArchitecture().c_str()); // "arch"
91
92 // The actual payload of the request.
93 base::StringAppendF(&request, "%s</request>", request_body.c_str());
94
95 return request;
96 }
97
SendProtocolRequest(const GURL & url,const std::string & protocol_request,net::URLFetcherDelegate * url_fetcher_delegate,net::URLRequestContextGetter * url_request_context_getter)98 net::URLFetcher* SendProtocolRequest(
99 const GURL& url,
100 const std::string& protocol_request,
101 net::URLFetcherDelegate* url_fetcher_delegate,
102 net::URLRequestContextGetter* url_request_context_getter) {
103 net::URLFetcher* url_fetcher(net::URLFetcher::Create(
104 0, url, net::URLFetcher::POST, url_fetcher_delegate));
105
106 url_fetcher->SetUploadData("application/xml", protocol_request);
107 url_fetcher->SetRequestContext(url_request_context_getter);
108 url_fetcher->SetLoadFlags(net::LOAD_DO_NOT_SEND_COOKIES |
109 net::LOAD_DO_NOT_SAVE_COOKIES |
110 net::LOAD_DISABLE_CACHE);
111 url_fetcher->SetAutomaticallyRetryOn5xx(false);
112 url_fetcher->Start();
113
114 return url_fetcher;
115 }
116
FetchSuccess(const net::URLFetcher & fetcher)117 bool FetchSuccess(const net::URLFetcher& fetcher) {
118 return GetFetchError(fetcher) == 0;
119 }
120
GetFetchError(const net::URLFetcher & fetcher)121 int GetFetchError(const net::URLFetcher& fetcher) {
122 const net::URLRequestStatus::Status status(fetcher.GetStatus().status());
123 switch (status) {
124 case net::URLRequestStatus::IO_PENDING:
125 case net::URLRequestStatus::CANCELED:
126 // Network status is a small positive number.
127 return status;
128
129 case net::URLRequestStatus::SUCCESS: {
130 // Response codes are positive numbers, greater than 100.
131 const int response_code(fetcher.GetResponseCode());
132 if (response_code == 200)
133 return 0;
134 else
135 return response_code ? response_code : -1;
136 }
137
138 case net::URLRequestStatus::FAILED: {
139 // Network errors are small negative numbers.
140 const int error = fetcher.GetStatus().error();
141 return error ? error : -1;
142 }
143
144 default:
145 return -1;
146 }
147 }
148
HasDiffUpdate(const CrxUpdateItem * update_item)149 bool HasDiffUpdate(const CrxUpdateItem* update_item) {
150 return !update_item->crx_diffurls.empty();
151 }
152
IsHttpServerError(int status_code)153 bool IsHttpServerError(int status_code) {
154 return 500 <= status_code && status_code < 600;
155 }
156
DeleteFileAndEmptyParentDirectory(const base::FilePath & filepath)157 bool DeleteFileAndEmptyParentDirectory(const base::FilePath& filepath) {
158 if (!base::DeleteFile(filepath, false))
159 return false;
160
161 const base::FilePath dirname(filepath.DirName());
162 if (!base::IsDirectoryEmpty(dirname))
163 return true;
164
165 return base::DeleteFile(dirname, false);
166 }
167
168 // Produces an extension-like friendly id.
HexStringToID(const std::string & hexstr)169 std::string HexStringToID(const std::string& hexstr) {
170 std::string id;
171 for (size_t i = 0; i < hexstr.size(); ++i) {
172 int val = 0;
173 if (base::HexStringToInt(
174 base::StringPiece(hexstr.begin() + i, hexstr.begin() + i + 1),
175 &val)) {
176 id.append(1, val + 'a');
177 } else {
178 id.append(1, 'a');
179 }
180 }
181 DCHECK(extensions::Extension::IdIsValid(id));
182 return id;
183 }
184
GetCrxComponentID(const CrxComponent & component)185 std::string GetCrxComponentID(const CrxComponent& component) {
186 return HexStringToID(StringToLowerASCII(
187 base::HexEncode(&component.pk_hash[0], component.pk_hash.size() / 2)));
188 }
189
190 } // namespace component_updater
191