gecko-dev/caps/include/nsPrivilege.h

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3.1 KiB
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef _NS_PRIVILEGE_H_
#define _NS_PRIVILEGE_H_
#include "prtypes.h"
#include "nsCaps.h"
#include "nsCapsEnums.h"
PRBool nsPrivilegeInitialize(void);
struct nsPrivilege {
public:
/* Public Field Accessors */
nsPermissionState itsPerm;
nsDurationState itsDuration;
/* Public Methods */
nsPrivilege(nsPermissionState perm, nsDurationState duration);
virtual ~nsPrivilege(void);
static nsPrivilege * findPrivilege(nsPermissionState permission, nsDurationState duration);
static nsPermissionState add(nsPermissionState perm1, nsPermissionState perm2);
static nsPrivilege * add(nsPrivilege *privilege1, nsPrivilege *privilege2);
PRBool samePermission(nsPrivilege *privilege);
PRBool samePermission(nsPermissionState perm);
PRBool sameDuration(nsPrivilege *privilege);
PRBool sameDuration(nsDurationState duration);
PRBool isAllowed(void);
PRBool isAllowedForever(void);
PRBool isForbidden(void);
PRBool isForbiddenForever(void);
PRBool isBlank(void);
nsPermissionState getPermission(void);
nsDurationState getDuration(void);
static nsPrivilege * findPrivilege(char *privStr);
char * toString(void);
private:
/* Private Field Accessors */
char *itsString;
static PRBool theInited;
/* Private Methods */
};
/**
* add() method takes two permissions and returns a new permission.
* Permission addition follows these rules:
* <pre>
* ALLOWED + ALLOWED = ALLOWED 1 + 1 = 1
* ALLOWED + BLANK = ALLOWED 1 + 2 = 1
* BLANK + BLANK = BLANK 2 + 2 = 2
* ALLOWED + FORBIDDEN = FORBIDDEN 1 + 0 = 0
* BLANK + FORBIDDEN = FORBIDDEN 2 + 0 = 0
* FORBIDDEN + FORBIDDEN = FORBIDDEN 0 + 0 = 0
* </pre>
*
* @return the permission that results from the above rules
* <p>
* Note: there are two versions of add(). One adds two Privilege
* objects. The other just adds permissions (as returned by
* <a href="#getPermission">getPermission()</a>).
*/
/* XXX: Whenever you change the value of FORBIDDEN, ALLOWED and BLANK
* make sure they obey the laws mentioned in add() method.
*/
inline nsPermissionState nsPrivilege::add(nsPermissionState p1, nsPermissionState p2)
{
if (p1 < p2)
return p1;
return p2;
}
inline nsPrivilege * nsPrivilege::add(nsPrivilege *p1, nsPrivilege *p2)
{
if (p1->itsPerm < p2->itsPerm)
return p1;
return p2;
}
#endif /* _NS_PRIVILEGE_H_ */