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..214b05d69bfb51e497c1bbfcd38f88089b64bd7b |
--- /dev/null |
+++ b/chrome_elf/chrome_elf_util.cc |
@@ -0,0 +1,193 @@ |
+// 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 <windows.h> |
+ |
+#include "base/macros.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"; |
+#if defined(GOOGLE_CHROME_BUILD) |
+const wchar_t kRegPathChromePolicy[] = L"SOFTWARE\\Policies\\Google\\Chrome"; |
+#else |
+const wchar_t kRegPathChromePolicy[] = L"SOFTWARE\\Policies\\Chromium"; |
+#endif // defined(GOOGLE_CHROME_BUILD) |
+ |
+const wchar_t kRegValueUsageStats[] = L"usagestats"; |
+const wchar_t kUninstallArgumentsField[] = L"UninstallArguments"; |
+const wchar_t kMetricsReportingEnabled[] =L"MetricsReportingEnabled"; |
+ |
+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 key = NULL; |
+ value_out->clear(); |
+ |
+ 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, |
+ full_key_path.c_str(), 0, |
+ KEY_QUERY_VALUE | KEY_WOW64_32KEY, &key) != |
+ ERROR_SUCCESS) { |
+ return false; |
+ } |
+ |
+ const size_t kMaxStringLength = 1024; |
+ wchar_t raw_value[kMaxStringLength] = {}; |
+ DWORD size = sizeof(raw_value); |
+ DWORD type = REG_SZ; |
+ LONG result = ::RegQueryValueEx(key, value_to_read, 0, &type, |
+ reinterpret_cast<LPBYTE>(raw_value), &size); |
+ |
+ if (result == ERROR_SUCCESS) { |
+ if (type != REG_SZ || (size & 1) != 0) { |
+ result = ERROR_NOT_SUPPORTED; |
+ } else if (size == 0) { |
+ *raw_value = L'\0'; |
+ } else if (raw_value[size / sizeof(wchar_t) - 1] != L'\0') { |
+ if ((size / sizeof(wchar_t)) < kMaxStringLength) |
+ raw_value[size / sizeof(wchar_t)] = L'\0'; |
+ else |
+ result = ERROR_MORE_DATA; |
+ } |
+ } |
+ |
+ if (result == ERROR_SUCCESS) |
+ *value_out = raw_value; |
+ |
+ ::RegCloseKey(key); |
+ |
+ return result == ERROR_SUCCESS; |
+} |
+ |
+bool ReadKeyValueDW(bool system_install, const wchar_t* key_path, |
+ base::string16 guid, const wchar_t* value_to_read, |
+ DWORD* value_out) { |
+ HKEY key = NULL; |
+ *value_out = 0; |
+ |
+ 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, |
+ full_key_path.c_str(), 0, |
+ KEY_QUERY_VALUE | KEY_WOW64_32KEY, &key) != |
+ ERROR_SUCCESS) { |
+ return false; |
+ } |
+ |
+ DWORD size = sizeof(*value_out); |
+ DWORD type = REG_DWORD; |
+ LONG result = ::RegQueryValueEx(key, value_to_read, 0, &type, |
+ reinterpret_cast<BYTE*>(value_out), &size); |
+ |
+ ::RegCloseKey(key); |
+ |
+ return result == ERROR_SUCCESS && size == sizeof(*value_out); |
+} |
+ |
+} // namespace |
+ |
+bool IsCanary(const wchar_t* exe_path) { |
+ return wcsstr(exe_path, L"Chrome SxS\\Application") != NULL; |
+} |
+ |
+bool IsSystemInstall(const wchar_t* exe_path) { |
+ wchar_t program_dir[MAX_PATH] = {}; |
+ DWORD ret = ::GetEnvironmentVariable(L"PROGRAMFILES", program_dir, |
+ arraysize(program_dir)); |
+ if (ret && ret < MAX_PATH && !wcsncmp(exe_path, program_dir, ret)) |
+ return true; |
+ |
+ ret = ::GetEnvironmentVariable(L"PROGRAMFILES(X86)", program_dir, |
+ arraysize(program_dir)); |
+ if (ret && ret < MAX_PATH && !wcsncmp(exe_path, program_dir, ret)) |
+ return true; |
+ |
+ return false; |
+} |
+ |
+bool IsMultiInstall(bool is_system_install) { |
+ base::string16 args; |
+ if (!ReadKeyValueString(is_system_install, kRegPathClientState, |
+ kAppGuidGoogleChrome, kUninstallArgumentsField, |
+ &args)) { |
+ return false; |
+ } |
+ return args.find(L"--multi-install") != base::string16::npos; |
+} |
+ |
+bool AreUsageStatsEnabled(const wchar_t* exe_path) { |
+ bool enabled = true; |
+ bool controlled_by_policy = ReportingIsEnforcedByPolicy(&enabled); |
+ |
+ if (controlled_by_policy && !enabled) |
+ return false; |
+ |
+ bool system_install = IsSystemInstall(exe_path); |
+ base::string16 app_guid; |
+ |
+ if (IsCanary(exe_path)) { |
+ app_guid = kAppGuidCanary; |
+ } else { |
+ app_guid = IsMultiInstall(system_install) ? kAppGuidGoogleBinaries : |
+ 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; |
+} |
+ |
+bool ReportingIsEnforcedByPolicy(bool* breakpad_enabled) { |
+ HKEY key = NULL; |
+ DWORD value = 0; |
+ BYTE* value_bytes = reinterpret_cast<BYTE*>(&value); |
+ DWORD size = sizeof(value); |
+ DWORD type = REG_DWORD; |
+ |
+ if (::RegOpenKeyEx(HKEY_LOCAL_MACHINE, kRegPathChromePolicy, 0, |
+ KEY_QUERY_VALUE, &key) == ERROR_SUCCESS) { |
+ if (::RegQueryValueEx(key, kMetricsReportingEnabled, 0, &type, |
+ value_bytes, &size) == ERROR_SUCCESS) { |
+ *breakpad_enabled = value != 0; |
+ } |
+ ::RegCloseKey(key); |
+ return size == sizeof(value); |
+ } |
+ |
+ if (::RegOpenKeyEx(HKEY_CURRENT_USER, kRegPathChromePolicy, 0, |
+ KEY_QUERY_VALUE, &key) == ERROR_SUCCESS) { |
+ if (::RegQueryValueEx(key, kMetricsReportingEnabled, 0, &type, |
+ value_bytes, &size) == ERROR_SUCCESS) { |
+ *breakpad_enabled = value != 0; |
+ } |
+ ::RegCloseKey(key); |
+ return size == sizeof(value); |
+ } |
+ |
+ return false; |
+} |