- add sources.
[platform/framework/web/crosswalk.git] / src / chrome / browser / chromeos / version_loader.cc
1 // Copyright (c) 2011 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/chromeos/version_loader.h"
6
7 #include <vector>
8
9 #include "base/bind.h"
10 #include "base/file_util.h"
11 #include "base/files/file_path.h"
12 #include "base/location.h"
13 #include "base/message_loop/message_loop.h"
14 #include "base/strings/string_split.h"
15 #include "base/strings/string_util.h"
16 #include "base/strings/stringprintf.h"
17 #include "base/sys_info.h"
18 #include "base/threading/sequenced_worker_pool.h"
19 #include "base/threading/thread.h"
20 #include "base/time/time.h"
21 #include "chrome/browser/browser_process.h"
22 #include "content/public/browser/browser_thread.h"
23
24 using content::BrowserThread;
25
26 namespace {
27
28 // Beginning of line we look for that gives full version number.
29 // Format: x.x.xx.x (Developer|Official build extra info) board info
30 const char kFullVersionKey[] = "CHROMEOS_RELEASE_DESCRIPTION";
31
32 // Same but for short version (x.x.xx.x).
33 const char kVersionKey[] = "CHROMEOS_RELEASE_VERSION";
34
35 // Beginning of line we look for that gives the firmware version.
36 const char kFirmwarePrefix[] = "version";
37
38 // File to look for firmware number in.
39 const char kPathFirmware[] = "/var/log/bios_info.txt";
40
41 // Converts const string* to const string&.
42 void VersionLoaderCallbackHelper(
43     base::Callback<void(const std::string&)> callback,
44     const std::string* version) {
45   callback.Run(*version);
46 }
47
48 }  // namespace
49
50 namespace chromeos {
51
52 VersionLoader::VersionLoader() : backend_(new Backend()) {}
53
54 VersionLoader::~VersionLoader() {}
55
56 CancelableTaskTracker::TaskId VersionLoader::GetVersion(
57     VersionFormat format,
58     const GetVersionCallback& callback,
59     CancelableTaskTracker* tracker) {
60   std::string* version = new std::string();
61   return tracker->PostTaskAndReply(
62       BrowserThread::GetBlockingPool(),
63       FROM_HERE,
64       base::Bind(&Backend::GetVersion, backend_.get(), format, version),
65       base::Bind(&VersionLoaderCallbackHelper, callback, base::Owned(version)));
66 }
67
68 CancelableTaskTracker::TaskId VersionLoader::GetFirmware(
69     const GetFirmwareCallback& callback,
70     CancelableTaskTracker* tracker) {
71   std::string* firmware = new std::string();
72   return tracker->PostTaskAndReply(
73       BrowserThread::GetBlockingPool(),
74       FROM_HERE,
75       base::Bind(&Backend::GetFirmware, backend_.get(), firmware),
76       base::Bind(&VersionLoaderCallbackHelper,
77                  callback, base::Owned(firmware)));
78 }
79
80 // static
81 std::string VersionLoader::ParseFirmware(const std::string& contents) {
82   // The file contains lines such as:
83   // vendor           | ...
84   // version          | ...
85   // release_date     | ...
86   // We don't make any assumption that the spaces between "version" and "|" is
87   //   fixed. So we just match kFirmwarePrefix at the start of the line and find
88   //   the first character that is not "|" or space
89
90   std::vector<std::string> lines;
91   base::SplitString(contents, '\n', &lines);
92   for (size_t i = 0; i < lines.size(); ++i) {
93     if (StartsWithASCII(lines[i], kFirmwarePrefix, false)) {
94       std::string str = lines[i].substr(std::string(kFirmwarePrefix).size());
95       size_t found = str.find_first_not_of("| ");
96       if (found != std::string::npos)
97         return str.substr(found);
98     }
99   }
100   return std::string();
101 }
102
103 void VersionLoader::Backend::GetVersion(VersionFormat format,
104                                         std::string* version) {
105   DCHECK(BrowserThread::GetBlockingPool()->RunsTasksOnCurrentThread());
106
107   std::string key = (format == VERSION_FULL) ? kFullVersionKey : kVersionKey;
108   if (!base::SysInfo::GetLsbReleaseValue(key, version)) {
109     LOG_IF(ERROR, base::SysInfo::IsRunningOnChromeOS())
110         << "No LSB version key: " << key;
111     *version = "0.0.0.0";
112   }
113   if (format == VERSION_SHORT_WITH_DATE) {
114     base::Time::Exploded ctime;
115     base::SysInfo::GetLsbReleaseTime().UTCExplode(&ctime);
116     *version += base::StringPrintf("-%02u.%02u.%02u",
117                                    ctime.year % 100,
118                                    ctime.month,
119                                    ctime.day_of_month);
120   }
121 }
122
123 void VersionLoader::Backend::GetFirmware(std::string* firmware) {
124   DCHECK(BrowserThread::GetBlockingPool()->RunsTasksOnCurrentThread());
125
126   std::string contents;
127   const base::FilePath file_path(kPathFirmware);
128   if (base::ReadFileToString(file_path, &contents)) {
129     *firmware = ParseFirmware(contents);
130   }
131 }
132
133 }  // namespace chromeos