Index: chrome/install_static/product_install_details.cc |
diff --git a/chrome/install_static/product_install_details.cc b/chrome/install_static/product_install_details.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..81009b3882792fad860f8d36df918a30f415439a |
--- /dev/null |
+++ b/chrome/install_static/product_install_details.cc |
@@ -0,0 +1,148 @@ |
+// Copyright 2016 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/install_static/product_install_details.h" |
+ |
+#include <windows.h> |
+#include <assert.h> |
+ |
+#include <algorithm> |
+ |
+#include "chrome/install_static/install_modes.h" |
+#include "chrome/install_static/install_util.h" |
+#include "chrome_elf/nt_registry/nt_registry.h" |
+ |
+namespace install_static { |
+ |
+namespace { |
+ |
+// Returns the executable path for the current process. |
+std::wstring GetCurrentProcessExePath() { |
+ std::wstring exe_path(MAX_PATH, L'\0'); |
+ DWORD length = ::GetModuleFileName(nullptr, &exe_path[0], exe_path.size()); |
+ if (!length) |
+ return std::wstring(); |
+ exe_path.resize(length); |
+ return exe_path; |
+} |
+ |
+const InstallConstants* FindInstallMode(const std::wstring& suffix) { |
+ // Search for a mode with the matching suffix. |
+ for (int i = 0; i < NUM_INSTALL_MODES; ++i) { |
+ const InstallConstants& mode = kInstallModes[i]; |
+ if (!_wcsicmp(suffix.c_str(), mode.install_suffix)) |
+ return &mode; |
+ } |
+ // The first mode is always the default if all else fails. |
+ return &kInstallModes[0]; |
+} |
+ |
+} // namespace |
+ |
+void InitializeProductDetailsForPrimaryModule() { |
+ InstallDetails::SetForProcess(MakeProductDetails(GetCurrentProcessExePath())); |
+} |
+ |
+bool IsPathParentOf(const wchar_t* parent, |
+ size_t parent_len, |
+ const std::wstring& path) { |
+ // Ignore all terminating path separators in |parent|. |
+ while (parent_len && parent[parent_len - 1] == L'\\') |
+ --parent_len; |
+ // Pass if the parent was all separators. |
+ if (!parent_len) |
+ return false; |
+ // This is a match if |parent| exactly matches |path| or is followed by a |
+ // separator. |
+ return !::wcsnicmp(path.c_str(), parent, parent_len) && |
+ (path.size() == parent_len || path[parent_len] == L'\\'); |
+} |
+ |
+bool PathIsInProgramFiles(const std::wstring& path) { |
+ static constexpr const wchar_t* kProgramFilesVariables[] = { |
+ L"PROGRAMFILES", // With or without " (x86)" according to exe bitness. |
+ L"PROGRAMFILES(X86)", // Always "C:\Program Files (x86)" |
+ L"PROGRAMW6432", // Always "C:\Program Files" under WoW64. |
+ }; |
+ wchar_t value[MAX_PATH]; |
+ *value = L'\0'; |
+ for (const wchar_t* variable : kProgramFilesVariables) { |
+ *value = L'\0'; |
+ DWORD ret = ::GetEnvironmentVariableW(variable, value, _countof(value)); |
+ if (ret && ret < _countof(value) && IsPathParentOf(value, ret, path)) |
+ return true; |
+ } |
+ |
+ return false; |
+} |
+ |
+std::wstring GetInstallSuffix(const std::wstring& exe_path) { |
+ // Search backwards from the end of the path for "\Application", using a |
+ // manual search for the sake of case-insensitivity. |
+ static constexpr wchar_t kInstallBinaryDir[] = L"\\Application"; |
+ constexpr size_t kInstallBinaryDirLength = _countof(kInstallBinaryDir) - 1; |
+ if (exe_path.size() < kProductPathNameLength + kInstallBinaryDirLength) |
+ return std::wstring(); |
+ std::wstring::const_reverse_iterator scan = |
+ exe_path.crbegin() + (kInstallBinaryDirLength - 1); |
+ while (_wcsnicmp(&*scan, kInstallBinaryDir, kInstallBinaryDirLength) && |
+ ++scan != exe_path.crend()) { |
+ } |
+ if (scan == exe_path.crend()) |
+ return std::wstring(); |
+ |
+ // Ensure that the dir is followed by a separator or is at the end of the |
+ // path. |
+ if (scan - exe_path.crbegin() != kInstallBinaryDirLength - 1 && |
+ *(scan - kInstallBinaryDirLength) != L'\\') { |
+ return std::wstring(); |
+ } |
+ |
+ // Scan backwards to the next separator or the beginning of the path. |
+ std::wstring::const_reverse_iterator name = |
+ std::find(scan + 1, exe_path.crend(), L'\\'); |
+ // Back up one character to ignore the separator/end of iteration. |
+ if (name == exe_path.crend()) |
+ name = exe_path.crbegin() + exe_path.size() - 1; |
+ else |
+ --name; |
+ |
+ // Check for a match of the product directory name. |
+ if (_wcsnicmp(&*name, kProductPathName, kProductPathNameLength)) |
+ return std::wstring(); |
+ |
+ // Return the (possibly empty) suffix betwixt the product name and install |
+ // binary dir. |
+ return std::wstring(&*(name - kProductPathNameLength), |
+ (name - scan) - kProductPathNameLength); |
+} |
+ |
+bool IsMultiInstall(const InstallConstants& mode, bool system_level) { |
+ assert(mode.supports_multi_install); |
+ std::wstring args; |
+ return nt::QueryRegValueSZ(system_level ? nt::HKLM : nt::HKCU, nt::WOW6432, |
+ GetClientStateKeyPath(mode.app_guid).c_str(), |
+ L"UninstallArguments", &args) && |
+ args.find(L"--multi-install") != std::wstring::npos; |
+} |
+ |
+std::unique_ptr<PrimaryInstallDetails> MakeProductDetails( |
+ const std::wstring& exe_path) { |
+ std::unique_ptr<PrimaryInstallDetails> details(new PrimaryInstallDetails()); |
+ |
+ const InstallConstants* mode = FindInstallMode(GetInstallSuffix(exe_path)); |
+ const bool system_level = |
+ mode->supports_system_level && PathIsInProgramFiles(exe_path); |
+ const bool multi_install = |
+ mode->supports_multi_install && IsMultiInstall(*mode, system_level); |
+ |
+ details->set_mode(mode); |
+ details->set_system_level(system_level); |
+ details->set_multi_install(multi_install); |
+ details->set_channel(DetermineChannel(*mode, system_level, multi_install)); |
+ |
+ return details; |
+} |
+ |
+} // namespace install_static |