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// Copyright 2011 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/40285824): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif
#include "chrome/installer/util/app_command.h"
#include <windows.h>
#include <stddef.h>
#include "base/check.h"
#include "base/logging.h"
#include "base/strings/strcat.h"
#include "base/win/registry.h"
#include "chrome/install_static/install_util.h"
#include "chrome/installer/util/google_update_constants.h"
#include "chrome/installer/util/work_item_list.h"
namespace installer {
namespace {
// Returns the "`GetClientsKeyPath()`\\Commands\\`name`" registry key path used
// to register AppCommands with the updater.
std::wstring GetCommandKey(const std::wstring& name) {
return base::StrCat({install_static::GetClientsKeyPath(), L"\\",
google_update::kRegCommandsKey, L"\\", name});
}
} // namespace
// static
// Associate bool member variables with registry entries.
const AppCommand::NamedBoolVar AppCommand::kNameBoolVars[] = {
{&AppCommand::sends_pings_, google_update::kRegSendsPingsField},
{&AppCommand::is_web_accessible_, google_update::kRegWebAccessibleField},
{&AppCommand::is_auto_run_on_os_upgrade_,
google_update::kRegAutoRunOnOSUpgradeField},
{&AppCommand::is_run_as_user_, google_update::kRegRunAsUserField},
};
AppCommand::AppCommand()
: sends_pings_(false),
is_web_accessible_(false),
is_auto_run_on_os_upgrade_(false),
is_run_as_user_(false) {}
AppCommand::AppCommand(const std::wstring& command_name,
const std::wstring& command_line)
: command_name_(command_name),
command_line_(command_line),
sends_pings_(false),
is_web_accessible_(false),
is_auto_run_on_os_upgrade_(false),
is_run_as_user_(false) {}
AppCommand::AppCommand(AppCommand&&) = default;
AppCommand::AppCommand(const AppCommand&) = default;
AppCommand::~AppCommand() = default;
bool AppCommand::Initialize(HKEY root_key) {
DCHECK(!command_name_.empty());
base::win::RegKey key;
auto result = key.Open(root_key, GetCommandKey(command_name_).c_str(),
KEY_QUERY_VALUE | KEY_WOW64_32KEY);
if (result != ERROR_SUCCESS) {
::SetLastError(result);
PLOG(DFATAL) << "Error opening AppCommand: " << command_name_;
return false;
}
return Initialize(key);
}
bool AppCommand::Initialize(const base::win::RegKey& key) {
if (!key.Valid()) {
LOG(DFATAL) << "Cannot initialize an AppCommand from an invalid key.";
return false;
}
LONG result = ERROR_SUCCESS;
std::wstring cmd_line;
result = key.ReadValue(google_update::kRegCommandLineField, &cmd_line);
if (result != ERROR_SUCCESS) {
LOG(WARNING) << "Error reading " << google_update::kRegCommandLineField
<< " value from registry: " << result;
return false;
}
command_line_.swap(cmd_line);
for (size_t i = 0; i < std::size(kNameBoolVars); ++i) {
DWORD value = 0; // Set default to false.
// Note: ReadValueDW only modifies out param on success.
key.ReadValueDW(kNameBoolVars[i].name, &value);
this->*(kNameBoolVars[i].data) = (value != 0);
}
return true;
}
void AppCommand::AddCreateAppCommandWorkItems(const HKEY root_key,
WorkItemList* item_list) const {
DCHECK(!command_name_.empty());
DCHECK(!command_line_.empty());
const std::wstring command_path = GetCommandKey(command_name_);
item_list->AddCreateRegKeyWorkItem(root_key, command_path, KEY_WOW64_32KEY)
->set_log_message("creating AppCommand registry key");
item_list
->AddSetRegValueWorkItem(root_key, command_path, KEY_WOW64_32KEY,
google_update::kRegCommandLineField,
command_line_, true)
->set_log_message("setting AppCommand CommandLine registry value");
for (size_t i = 0; i < std::size(kNameBoolVars); ++i) {
const wchar_t* var_name = kNameBoolVars[i].name;
bool var_data = this->*(kNameBoolVars[i].data);
// Adds a work item to set |var_name| to DWORD 1 if |var_data| is true;
// adds a work item to remove |var_name| otherwise.
if (var_data) {
item_list->AddSetRegValueWorkItem(root_key, command_path, KEY_WOW64_32KEY,
var_name, static_cast<DWORD>(1), true);
} else {
item_list->AddDeleteRegValueWorkItem(root_key, command_path,
KEY_WOW64_32KEY, var_name);
}
}
}
void AppCommand::AddDeleteAppCommandWorkItems(const HKEY root_key,
WorkItemList* item_list) const {
DCHECK(!command_name_.empty());
item_list->AddDeleteRegKeyWorkItem(root_key, GetCommandKey(command_name_),
KEY_WOW64_32KEY);
}
} // namespace installer
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