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.
4
5 #include "components/component_updater/component_updater_utils.h"
6
7 #include <stdint.h>
8 #include <cmath>
9
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/component_updater/component_updater_configurator.h"
20 #include "components/component_updater/crx_update_item.h"
21 #include "components/crx_file/id_util.h"
22 #include "components/omaha_query_params/omaha_query_params.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 using omaha_query_params::OmahaQueryParams;
29
30 namespace component_updater {
31
32 namespace {
33
34 // Returns the amount of physical memory in GB, rounded to the nearest GB.
GetPhysicalMemoryGB()35 int GetPhysicalMemoryGB() {
36 const double kOneGB = 1024 * 1024 * 1024;
37 const int64_t phys_mem = base::SysInfo::AmountOfPhysicalMemory();
38 return static_cast<int>(std::floor(0.5 + phys_mem / kOneGB));
39 }
40
41 } // namespace
42
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)43 std::string BuildProtocolRequest(const std::string& browser_version,
44 const std::string& channel,
45 const std::string& lang,
46 const std::string& os_long_name,
47 const std::string& request_body,
48 const std::string& additional_attributes) {
49 const std::string prod_id(
50 OmahaQueryParams::GetProdIdString(OmahaQueryParams::CHROME));
51
52 std::string request(
53 "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
54 "<request protocol=\"3.0\" ");
55
56 if (!additional_attributes.empty())
57 base::StringAppendF(&request, "%s ", additional_attributes.c_str());
58
59 // Chrome version and platform information.
60 base::StringAppendF(
61 &request,
62 "version=\"%s-%s\" prodversion=\"%s\" "
63 "requestid=\"{%s}\" lang=\"%s\" updaterchannel=\"%s\" prodchannel=\"%s\" "
64 "os=\"%s\" arch=\"%s\" nacl_arch=\"%s\"",
65 prod_id.c_str(),
66 browser_version.c_str(), // "version"
67 browser_version.c_str(), // "prodversion"
68 base::GenerateGUID().c_str(), // "requestid"
69 lang.c_str(), // "lang",
70 channel.c_str(), // "updaterchannel"
71 channel.c_str(), // "prodchannel"
72 OmahaQueryParams::GetOS(), // "os"
73 OmahaQueryParams::GetArch(), // "arch"
74 OmahaQueryParams::GetNaclArch()); // "nacl_arch"
75 #if defined(OS_WIN)
76 const bool is_wow64(base::win::OSInfo::GetInstance()->wow64_status() ==
77 base::win::OSInfo::WOW64_ENABLED);
78 if (is_wow64)
79 base::StringAppendF(&request, " wow64=\"1\"");
80 #endif
81 base::StringAppendF(&request, ">");
82
83 // HW platform information.
84 base::StringAppendF(&request,
85 "<hw physmemory=\"%d\"/>",
86 GetPhysicalMemoryGB()); // "physmem" in GB.
87
88 // OS version and platform information.
89 base::StringAppendF(
90 &request,
91 "<os platform=\"%s\" version=\"%s\" arch=\"%s\"/>",
92 os_long_name.c_str(), // "platform"
93 base::SysInfo().OperatingSystemVersion().c_str(), // "version"
94 base::SysInfo().OperatingSystemArchitecture().c_str()); // "arch"
95
96 // The actual payload of the request.
97 base::StringAppendF(&request, "%s</request>", request_body.c_str());
98
99 return request;
100 }
101
SendProtocolRequest(const GURL & url,const std::string & protocol_request,net::URLFetcherDelegate * url_fetcher_delegate,net::URLRequestContextGetter * url_request_context_getter)102 net::URLFetcher* SendProtocolRequest(
103 const GURL& url,
104 const std::string& protocol_request,
105 net::URLFetcherDelegate* url_fetcher_delegate,
106 net::URLRequestContextGetter* url_request_context_getter) {
107 net::URLFetcher* url_fetcher(net::URLFetcher::Create(
108 0, url, net::URLFetcher::POST, url_fetcher_delegate));
109
110 url_fetcher->SetUploadData("application/xml", protocol_request);
111 url_fetcher->SetRequestContext(url_request_context_getter);
112 url_fetcher->SetLoadFlags(net::LOAD_DO_NOT_SEND_COOKIES |
113 net::LOAD_DO_NOT_SAVE_COOKIES |
114 net::LOAD_DISABLE_CACHE);
115 url_fetcher->SetAutomaticallyRetryOn5xx(false);
116 url_fetcher->Start();
117
118 return url_fetcher;
119 }
120
FetchSuccess(const net::URLFetcher & fetcher)121 bool FetchSuccess(const net::URLFetcher& fetcher) {
122 return GetFetchError(fetcher) == 0;
123 }
124
GetFetchError(const net::URLFetcher & fetcher)125 int GetFetchError(const net::URLFetcher& fetcher) {
126 const net::URLRequestStatus::Status status(fetcher.GetStatus().status());
127 switch (status) {
128 case net::URLRequestStatus::IO_PENDING:
129 case net::URLRequestStatus::CANCELED:
130 // Network status is a small positive number.
131 return status;
132
133 case net::URLRequestStatus::SUCCESS: {
134 // Response codes are positive numbers, greater than 100.
135 const int response_code(fetcher.GetResponseCode());
136 if (response_code == 200)
137 return 0;
138 else
139 return response_code ? response_code : -1;
140 }
141
142 case net::URLRequestStatus::FAILED: {
143 // Network errors are small negative numbers.
144 const int error = fetcher.GetStatus().error();
145 return error ? error : -1;
146 }
147
148 default:
149 return -1;
150 }
151 }
152
HasDiffUpdate(const CrxUpdateItem * update_item)153 bool HasDiffUpdate(const CrxUpdateItem* update_item) {
154 return !update_item->crx_diffurls.empty();
155 }
156
IsHttpServerError(int status_code)157 bool IsHttpServerError(int status_code) {
158 return 500 <= status_code && status_code < 600;
159 }
160
DeleteFileAndEmptyParentDirectory(const base::FilePath & filepath)161 bool DeleteFileAndEmptyParentDirectory(const base::FilePath& filepath) {
162 if (!base::DeleteFile(filepath, false))
163 return false;
164
165 const base::FilePath dirname(filepath.DirName());
166 if (!base::IsDirectoryEmpty(dirname))
167 return true;
168
169 return base::DeleteFile(dirname, false);
170 }
171
172 // Produces an extension-like friendly id.
HexStringToID(const std::string & hexstr)173 std::string HexStringToID(const std::string& hexstr) {
174 std::string id;
175 for (size_t i = 0; i < hexstr.size(); ++i) {
176 int val = 0;
177 if (base::HexStringToInt(
178 base::StringPiece(hexstr.begin() + i, hexstr.begin() + i + 1),
179 &val)) {
180 id.append(1, val + 'a');
181 } else {
182 id.append(1, 'a');
183 }
184 }
185
186 DCHECK(crx_file::id_util::IdIsValid(id));
187
188 return id;
189 }
190
GetCrxComponentID(const CrxComponent & component)191 std::string GetCrxComponentID(const CrxComponent& component) {
192 return HexStringToID(base::StringToLowerASCII(
193 base::HexEncode(&component.pk_hash[0], component.pk_hash.size() / 2)));
194 }
195
196 } // namespace component_updater
197