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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "crypto/apple_keychain.h"
#include "base/memory/raw_ptr.h"
#include "base/synchronization/lock.h"
#include "crypto/mac_security_services_lock.h"
namespace {
// Supports the pattern where a function F(T* out) allows |out| to be nullptr
// but its implementation requires a T variable even in the absence of |out|.
// Such a function can maintain a local OptionalOutParameter<T> to provide the
// internal T value, assigning its value to *out on destruction if possible.
template <typename T>
class OptionalOutParameter {
public:
OptionalOutParameter(const OptionalOutParameter&) = delete;
OptionalOutParameter& operator=(const OptionalOutParameter&) = delete;
OptionalOutParameter(T* out, T value = T()) : out_(out), value_(value) {}
~OptionalOutParameter() {
if (out_) {
*out_ = value_;
}
}
OptionalOutParameter& operator=(T value) {
value_ = value;
return *this;
}
operator T() const { return value_; }
private:
const raw_ptr<T> out_;
T value_;
};
} // namespace
// Much of the Keychain API was marked deprecated as of the macOS 13 SDK.
// Removal of its use is tracked in https://crbug.com/1348251 but deprecation
// warnings are disabled in the meanwhile.
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
namespace crypto {
AppleKeychain::AppleKeychain() = default;
AppleKeychain::~AppleKeychain() = default;
OSStatus AppleKeychain::FindGenericPassword(
UInt32 service_name_length,
const char* service_name,
UInt32 account_name_length,
const char* account_name,
UInt32* password_length,
void** password_data,
AppleSecKeychainItemRef* item) const {
base::AutoLock lock(GetMacSecurityServicesLock());
return SecKeychainFindGenericPassword(
nullptr, service_name_length, service_name, account_name_length,
account_name, password_length, password_data, item);
}
OSStatus AppleKeychain::ItemFreeContent(void* data) const {
base::AutoLock lock(GetMacSecurityServicesLock());
return SecKeychainItemFreeContent(nullptr, data);
}
OSStatus AppleKeychain::AddGenericPassword(
UInt32 service_name_length,
const char* service_name,
UInt32 account_name_length,
const char* account_name,
UInt32 password_length,
const void* password_data,
AppleSecKeychainItemRef* item) const {
base::AutoLock lock(GetMacSecurityServicesLock());
return SecKeychainAddGenericPassword(
nullptr, service_name_length, service_name, account_name_length,
account_name, password_length, password_data, item);
}
OSStatus AppleKeychain::ItemDelete(AppleSecKeychainItemRef item) const {
base::AutoLock lock(GetMacSecurityServicesLock());
return SecKeychainItemDelete(item);
}
ScopedKeychainUserInteractionAllowed::ScopedKeychainUserInteractionAllowed(
Boolean allowed,
OSStatus* status) {
Boolean was_allowed;
OptionalOutParameter<OSStatus> local_status(
status, SecKeychainGetUserInteractionAllowed(&was_allowed));
if (local_status != noErr) {
return;
}
local_status = SecKeychainSetUserInteractionAllowed(allowed);
if (local_status != noErr) {
return;
}
was_allowed_ = was_allowed;
}
ScopedKeychainUserInteractionAllowed::~ScopedKeychainUserInteractionAllowed() {
if (was_allowed_) {
SecKeychainSetUserInteractionAllowed(*was_allowed_);
}
}
#pragma clang diagnostic pop
} // namespace crypto
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