In-application Keystone ticket promotion

chrome/browser/cocoa/scoped_authorizationref.h

+// Copyright (c) 2009 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 CHROME_BROWSER_COCOA_SCOPED_AUTHORIZATIONREF_H_
+#define CHROME_BROWSER_COCOA_SCOPED_AUTHORIZATIONREF_H_
+
+#include <Security/Authorization.h>
+
+#include "base/basictypes.h"
+
+// scoped_AuthorizationRef maintains ownership of an AuthorizationRef.  It is
+// patterned after the scoped_ptr interface.
+
+class scoped_AuthorizationRef {
+ public:
+  explicit scoped_AuthorizationRef(AuthorizationRef authorization = NULL)
+      : authorization_(authorization) {
+  }
+
+  ~scoped_AuthorizationRef() {
+    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(scoped_AuthorizationRef& that) {
+    AuthorizationRef temp = that.authorization_;
+    that.authorization_ = authorization_;
+    authorization_ = temp;
+  }
+
+  // scoped_AuthorizationRef::release() is like scoped_ptr<>::release.  It is
+  // NOT a wrapper for AuthorizationFree().  To force a
+  // scoped_AuthorizationRef object to call AuthorizationFree(), use
+  // scoped_AuthorizaitonRef::reset().
+  AuthorizationRef release() {
+    AuthorizationRef temp = authorization_;
+    authorization_ = NULL;
+    return temp;
+  }
+
+ private:
+  AuthorizationRef authorization_;
+
+  DISALLOW_COPY_AND_ASSIGN(scoped_AuthorizationRef);
+};
+
+#endif  // CHROME_BROWSER_COCOA_SCOPED_AUTHORIZATIONREF_H_