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// Copyright (c) 2012 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.
#ifndef BASE_MAC_SCOPED_AUTHORIZATIONREF_H_
#define BASE_MAC_SCOPED_AUTHORIZATIONREF_H_
#include <Security/Authorization.h>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
// ScopedAuthorizationRef maintains ownership of an AuthorizationRef. It is
// patterned after the scoped_ptr interface.
namespace base {
namespace mac {
class ScopedAuthorizationRef {
public:
explicit ScopedAuthorizationRef(AuthorizationRef authorization = NULL)
: authorization_(authorization) {
}
~ScopedAuthorizationRef() {
if (authorization_) {
AuthorizationFree(authorization_, kAuthorizationFlagDestroyRights);
}
}
void reset(AuthorizationRef authorization = NULL) {
if (authorization_ != authorization) {
if (authorization_) {
AuthorizationFree(authorization_, kAuthorizationFlagDestroyRights);
}
authorization_ = authorization;
}
}
bool operator==(AuthorizationRef that) const {
return authorization_ == that;
}
bool operator!=(AuthorizationRef that) const {
return authorization_ != that;
}
operator AuthorizationRef() const {
return authorization_;
}
AuthorizationRef* operator&() {
return &authorization_;
}
AuthorizationRef get() const {
return authorization_;
}
void swap(ScopedAuthorizationRef& that) {
AuthorizationRef temp = that.authorization_;
that.authorization_ = authorization_;
authorization_ = temp;
}
// ScopedAuthorizationRef::release() is like scoped_ptr<>::release. It is
// NOT a wrapper for AuthorizationFree(). To force a
// ScopedAuthorizationRef object to call AuthorizationFree(), use
// ScopedAuthorizationRef::reset().
AuthorizationRef release() WARN_UNUSED_RESULT {
AuthorizationRef temp = authorization_;
authorization_ = NULL;
return temp;
}
private:
AuthorizationRef authorization_;
DISALLOW_COPY_AND_ASSIGN(ScopedAuthorizationRef);
};
} // namespace mac
} // namespace base
#endif // BASE_MAC_SCOPED_AUTHORIZATIONREF_H_
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