file_version_info_win.cc revision ddb351dbec246cf1fab5ec20d2d5520909041de1 
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 "base/file_version_info_win.h"
6
7#include <windows.h>
8
9#include "base/file_path.h"
10#include "base/file_version_info.h"
11#include "base/logging.h"
12#include "base/path_service.h"
13#include "base/threading/thread_restrictions.h"
14
15FileVersionInfoWin::FileVersionInfoWin(void* data, int language, int code_page)
16    : language_(language), code_page_(code_page) {
17  base::ThreadRestrictions::AssertIOAllowed();
18  data_.reset((char*) data);
19  fixed_file_info_ = NULL;
20  UINT size;
21  ::VerQueryValue(data_.get(), L"\\", (LPVOID*)&fixed_file_info_, &size);
22}
23
24FileVersionInfoWin::~FileVersionInfoWin() {
25  DCHECK(data_.get());
26}
27
28typedef struct {
29  WORD language;
30  WORD code_page;
31} LanguageAndCodePage;
32
33// static
34FileVersionInfo* FileVersionInfo::CreateFileVersionInfoForCurrentModule() {
35  FilePath app_path;
36  if (!PathService::Get(base::FILE_MODULE, &app_path))
37    return NULL;
38
39  return CreateFileVersionInfo(app_path);
40}
41
42// static
43FileVersionInfo* FileVersionInfo::CreateFileVersionInfo(
44    const FilePath& file_path) {
45  base::ThreadRestrictions::AssertIOAllowed();
46
47  DWORD dummy;
48  const wchar_t* path = file_path.value().c_str();
49  DWORD length = ::GetFileVersionInfoSize(path, &dummy);
50  if (length == 0)
51    return NULL;
52
53  void* data = calloc(length, 1);
54  if (!data)
55    return NULL;
56
57  if (!::GetFileVersionInfo(path, dummy, length, data)) {
58    free(data);
59    return NULL;
60  }
61
62  LanguageAndCodePage* translate = NULL;
63  uint32 page_count;
64  BOOL query_result = VerQueryValue(data, L"\\VarFileInfo\\Translation",
65                                   (void**) &translate, &page_count);
66
67  if (query_result && translate) {
68    return new FileVersionInfoWin(data, translate->language,
69                                  translate->code_page);
70
71  } else {
72    free(data);
73    return NULL;
74  }
75}
76
77string16 FileVersionInfoWin::company_name() {
78  return GetStringValue(L"CompanyName");
79}
80
81string16 FileVersionInfoWin::company_short_name() {
82  return GetStringValue(L"CompanyShortName");
83}
84
85string16 FileVersionInfoWin::internal_name() {
86  return GetStringValue(L"InternalName");
87}
88
89string16 FileVersionInfoWin::product_name() {
90  return GetStringValue(L"ProductName");
91}
92
93string16 FileVersionInfoWin::product_short_name() {
94  return GetStringValue(L"ProductShortName");
95}
96
97string16 FileVersionInfoWin::comments() {
98  return GetStringValue(L"Comments");
99}
100
101string16 FileVersionInfoWin::legal_copyright() {
102  return GetStringValue(L"LegalCopyright");
103}
104
105string16 FileVersionInfoWin::product_version() {
106  return GetStringValue(L"ProductVersion");
107}
108
109string16 FileVersionInfoWin::file_description() {
110  return GetStringValue(L"FileDescription");
111}
112
113string16 FileVersionInfoWin::legal_trademarks() {
114  return GetStringValue(L"LegalTrademarks");
115}
116
117string16 FileVersionInfoWin::private_build() {
118  return GetStringValue(L"PrivateBuild");
119}
120
121string16 FileVersionInfoWin::file_version() {
122  return GetStringValue(L"FileVersion");
123}
124
125string16 FileVersionInfoWin::original_filename() {
126  return GetStringValue(L"OriginalFilename");
127}
128
129string16 FileVersionInfoWin::special_build() {
130  return GetStringValue(L"SpecialBuild");
131}
132
133string16 FileVersionInfoWin::last_change() {
134  return GetStringValue(L"LastChange");
135}
136
137bool FileVersionInfoWin::is_official_build() {
138  return (GetStringValue(L"Official Build").compare(L"1") == 0);
139}
140
141bool FileVersionInfoWin::GetValue(const wchar_t* name,
142                                  std::wstring* value_str) {
143  WORD lang_codepage[8];
144  int i = 0;
145  // Use the language and codepage from the DLL.
146  lang_codepage[i++] = language_;
147  lang_codepage[i++] = code_page_;
148  // Use the default language and codepage from the DLL.
149  lang_codepage[i++] = ::GetUserDefaultLangID();
150  lang_codepage[i++] = code_page_;
151  // Use the language from the DLL and Latin codepage (most common).
152  lang_codepage[i++] = language_;
153  lang_codepage[i++] = 1252;
154  // Use the default language and Latin codepage (most common).
155  lang_codepage[i++] = ::GetUserDefaultLangID();
156  lang_codepage[i++] = 1252;
157
158  i = 0;
159  while (i < arraysize(lang_codepage)) {
160    wchar_t sub_block[MAX_PATH];
161    WORD language = lang_codepage[i++];
162    WORD code_page = lang_codepage[i++];
163    _snwprintf_s(sub_block, MAX_PATH, MAX_PATH,
164                 L"\\StringFileInfo\\%04x%04x\\%ls", language, code_page, name);
165    LPVOID value = NULL;
166    uint32 size;
167    BOOL r = ::VerQueryValue(data_.get(), sub_block, &value, &size);
168    if (r && value) {
169      value_str->assign(static_cast<wchar_t*>(value));
170      return true;
171    }
172  }
173  return false;
174}
175
176std::wstring FileVersionInfoWin::GetStringValue(const wchar_t* name) {
177  std::wstring str;
178  if (GetValue(name, &str))
179    return str;
180  else
181    return L"";
182}
183