Index: chrome_elf/chrome_elf_util.cc |
diff --git a/chrome_elf/chrome_elf_util.cc b/chrome_elf/chrome_elf_util.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..cba0f09171976a6d5140412541eff20dfc5406a5 |
--- /dev/null |
+++ b/chrome_elf/chrome_elf_util.cc |
@@ -0,0 +1,135 @@ |
+// Copyright 2014 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#include "chrome_elf/chrome_elf_util.h" |
+ |
+#include "base/strings/string16.h" |
+ |
+namespace { |
+ |
+const wchar_t kRegPathClientState[] = L"Software\\Google\\Update\\ClientState"; |
+const wchar_t kRegPathClientStateMedium[] = |
+ L"Software\\Google\\Update\\ClientStateMedium"; |
+const wchar_t kRegValueUsageStats[] = L"usagestats"; |
+const wchar_t kUninstallArgumentsField[] = L"UninstallArguments"; |
+ |
+ |
grt (UTC plus 2)
2014/02/13 03:58:26
nit: remove extra newline
Cait (Slow)
2014/02/14 01:17:02
Done.
|
+const wchar_t kAppGuidCanary[] = |
+ L"{4ea16ac7-fd5a-47c3-875b-dbf4a2008c20}"; |
+const wchar_t kAppGuidGoogleChrome[] = |
+ L"{8A69D345-D564-463c-AFF1-A69D9E530F96}"; |
+const wchar_t kAppGuidGoogleBinaries[] = |
+ L"{4DC8B4CA-1BDA-483e-B5FA-D3C12E15B62D}"; |
+ |
+bool ReadKeyValueString(bool system_install, const wchar_t* key_path, |
+ const wchar_t* guid, const wchar_t* value_to_read, |
+ base::string16* value_out) { |
+ HKEY h_key = NULL; |
+ *value_out = base::string16(); |
grt (UTC plus 2)
2014/02/13 03:58:26
value_out->clear();
Cait (Slow)
2014/02/14 01:17:02
Done.
|
+ |
+ base::string16 full_key_path(key_path); |
+ full_key_path.append(1, L'\\'); |
+ full_key_path.append(guid); |
+ |
+ if (::RegOpenKeyEx(system_install? HKEY_LOCAL_MACHINE : HKEY_CURRENT_USER, |
grt (UTC plus 2)
2014/02/13 03:58:26
nit: space before ?
Cait (Slow)
2014/02/14 01:17:02
Done.
|
+ full_key_path.c_str(), 0, KEY_QUERY_VALUE, &h_key) != ERROR_SUCCESS) { |
grt (UTC plus 2)
2014/02/13 03:58:26
use the KEY_WOW64_32KEY flag here and on line 64 (
Cait (Slow)
2014/02/14 01:17:02
Done.
|
+ return false; |
+ } |
+ |
+ const size_t kMaxStringLength = 1024; |
+ wchar_t raw_value[kMaxStringLength] = {}; |
+ DWORD size = sizeof(raw_value); |
+ DWORD type = REG_SZ; |
+ LONG result = ::RegQueryValueEx(h_key, value_to_read, 0, &type, |
grt (UTC plus 2)
2014/02/13 03:58:26
this isn't guaranteed to return a null-terminated
Cait (Slow)
2014/02/14 01:17:02
Done.
|
+ reinterpret_cast<LPBYTE>(raw_value), &size); |
+ *value_out = raw_value; |
+ |
+ ::RegCloseKey(h_key); |
+ |
+ return ERROR_SUCCESS == result; |
grt (UTC plus 2)
2014/02/13 03:58:26
chromium style puts the constant after the variabl
Cait (Slow)
2014/02/14 01:17:02
Done.
grt (UTC plus 2)
2014/02/14 16:37:31
Really? ;-)
|
+} |
+ |
+bool ReadKeyValueDW(bool system_install, const wchar_t* key_path, |
+ base::string16 guid, const wchar_t* value_to_read, |
+ DWORD* value_out) { |
+ HKEY h_key = NULL;; |
grt (UTC plus 2)
2014/02/13 03:58:26
nit: remove extra ;
Cait (Slow)
2014/02/14 01:17:02
Done.
|
+ *value_out = 0; |
+ |
+ base::string16 full_key_path(key_path); |
+ full_key_path.append(1, L'\\'); |
+ full_key_path.append(guid.c_str()); |
grt (UTC plus 2)
2014/02/13 03:58:26
remove .c_str()
Cait (Slow)
2014/02/14 01:17:02
Done.
|
+ |
+ if (::RegOpenKeyEx(system_install? HKEY_LOCAL_MACHINE : HKEY_CURRENT_USER, |
grt (UTC plus 2)
2014/02/13 03:58:26
nit: space before ?
Cait (Slow)
2014/02/14 01:17:02
Done.
|
+ full_key_path.c_str(), 0, KEY_QUERY_VALUE, &h_key) != ERROR_SUCCESS) { |
+ return false; |
+ } |
+ |
+ DWORD size = sizeof(DWORD); |
+ DWORD type = REG_DWORD; |
+ LONG result = ::RegQueryValueEx(h_key, value_to_read, 0, &type, |
+ reinterpret_cast<BYTE*>(value_out), &size); |
+ |
+ ::RegCloseKey(h_key); |
+ |
+ return ERROR_SUCCESS == result; |
grt (UTC plus 2)
2014/02/13 03:58:26
see above
Cait (Slow)
2014/02/14 01:17:02
Done.
grt (UTC plus 2)
2014/02/14 16:37:31
More doing?
|
+} |
+ |
+} // namespace |
+ |
+bool IsCanary(wchar_t* exe_path) { |
+ return wcsstr(exe_path, L"Google\\Chrome SxS") != NULL; |
grt (UTC plus 2)
2014/02/13 03:58:26
i think chrome looks for "Chrome SxS\\Application"
Cait (Slow)
2014/02/14 01:17:02
Done.
|
+} |
+ |
+bool IsSystemInstall(wchar_t* exe_path) { |
+ wchar_t program_dir[MAX_PATH] = {}; |
+ DWORD ret = ::GetEnvironmentVariable(L"PROGRAMFILES", program_dir, MAX_PATH); |
grt (UTC plus 2)
2014/02/13 03:58:26
MAX_PATH -> arraysize(program_dir) here and below
Cait (Slow)
2014/02/14 01:17:02
Done.
|
+ if (ret!=0 && ret<=MAX_PATH && wcsncmp(exe_path, program_dir, ret) == 0) |
grt (UTC plus 2)
2014/02/13 03:58:26
whitespace around operators
simplify zero tests
re
Cait (Slow)
2014/02/14 01:17:02
Done.
|
+ return true; |
+ |
+ ret = ::GetEnvironmentVariable(L"PROGRAMFILES(X86)", program_dir, MAX_PATH); |
+ if (ret!=0 && ret<=MAX_PATH && wcsncmp(exe_path, program_dir, ret) == 0) |
+ return true; |
+ |
+ return false; |
+} |
+ |
+bool IsMultiInstall(wchar_t* exe_path) { |
+ base::string16 args; |
+ if (ERROR_SUCCESS != ReadKeyValueString(IsSystemInstall(exe_path), |
grt (UTC plus 2)
2014/02/13 03:58:26
ReadKeyValueString returns bool:
if (!ReadKeyVal
Cait (Slow)
2014/02/14 01:17:02
Done.
|
+ kRegPathClientState, kAppGuidGoogleChrome, kUninstallArgumentsField, |
+ &args)) { |
+ return false; |
+ } |
+ return wcsstr(args.c_str(), L"--multi-install") != NULL; |
grt (UTC plus 2)
2014/02/13 03:58:26
return args.find(L"--multi-install") != base::stri
Cait (Slow)
2014/02/14 01:17:02
Done.
|
+} |
+ |
+bool AreUsageStatsEnabled() { |
+#if !defined(GOOGLE_CHROME_BUILD) |
+ return false; |
+#else |
+ wchar_t exe_path[MAX_PATH] = {}; |
+ if (!GetModuleFileNameW(NULL, exe_path, MAX_PATH)) |
grt (UTC plus 2)
2014/02/13 03:58:26
MAX_PATH -> arraysize(exe_path)
Cait (Slow)
2014/02/14 01:17:02
Done.
|
+ return false; |
+ |
+ bool system_install = IsSystemInstall(exe_path); |
+ base::string16 app_guid; |
+ |
+ if (IsCanary(exe_path)) { |
+ app_guid = kAppGuidCanary; |
+ } else { |
+ app_guid = IsMultiInstall(exe_path)? kAppGuidGoogleBinaries : |
grt (UTC plus 2)
2014/02/13 03:58:26
nit: space before ?
Cait (Slow)
2014/02/14 01:17:02
Done.
|
+ kAppGuidGoogleChrome; |
+ } |
+ |
+ DWORD out_value = 0; |
+ if (system_install && ReadKeyValueDW(system_install, |
+ kRegPathClientStateMedium, app_guid, kRegValueUsageStats, |
+ &out_value)) { |
+ return out_value == 1; |
+ } |
+ |
+ return ReadKeyValueDW(system_install, kRegPathClientState, |
+ app_guid, kRegValueUsageStats, &out_value) && out_value == 1; |
+#endif // defined(GOOGLE_CHROME_BUILD) |
+} |