86 lines
2.1 KiB
C++
86 lines
2.1 KiB
C++
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef BASE_MAC_SCOPED_AUTHORIZATIONREF_H_
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#define BASE_MAC_SCOPED_AUTHORIZATIONREF_H_
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#include <Security/Authorization.h>
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#include "base/basictypes.h"
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#include "base/compiler_specific.h"
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// ScopedAuthorizationRef maintains ownership of an AuthorizationRef. It is
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// patterned after the scoped_ptr interface.
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namespace base {
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namespace mac {
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class ScopedAuthorizationRef {
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public:
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explicit ScopedAuthorizationRef(AuthorizationRef authorization = NULL)
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: authorization_(authorization) {
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}
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~ScopedAuthorizationRef() {
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if (authorization_) {
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AuthorizationFree(authorization_, kAuthorizationFlagDestroyRights);
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}
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}
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void reset(AuthorizationRef authorization = NULL) {
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if (authorization_ != authorization) {
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if (authorization_) {
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AuthorizationFree(authorization_, kAuthorizationFlagDestroyRights);
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}
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authorization_ = authorization;
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}
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}
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bool operator==(AuthorizationRef that) const {
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return authorization_ == that;
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}
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bool operator!=(AuthorizationRef that) const {
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return authorization_ != that;
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}
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operator AuthorizationRef() const {
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return authorization_;
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}
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AuthorizationRef* operator&() {
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return &authorization_;
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}
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AuthorizationRef get() const {
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return authorization_;
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}
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void swap(ScopedAuthorizationRef& that) {
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AuthorizationRef temp = that.authorization_;
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that.authorization_ = authorization_;
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authorization_ = temp;
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}
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// ScopedAuthorizationRef::release() is like scoped_ptr<>::release. It is
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// NOT a wrapper for AuthorizationFree(). To force a
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// ScopedAuthorizationRef object to call AuthorizationFree(), use
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// ScopedAuthorizationRef::reset().
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AuthorizationRef release() WARN_UNUSED_RESULT {
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AuthorizationRef temp = authorization_;
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authorization_ = NULL;
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return temp;
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}
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private:
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AuthorizationRef authorization_;
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DISALLOW_COPY_AND_ASSIGN(ScopedAuthorizationRef);
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};
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} // namespace mac
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} // namespace base
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#endif // BASE_MAC_SCOPED_AUTHORIZATIONREF_H_
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