119 lines
4.5 KiB
C#
119 lines
4.5 KiB
C#
// (c) Copyright Ascensio System SIA 2010-2022
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//
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// This program is a free software product.
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// You can redistribute it and/or modify it under the terms
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// of the GNU Affero General Public License (AGPL) version 3 as published by the Free Software
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// Foundation. In accordance with Section 7(a) of the GNU AGPL its Section 15 shall be amended
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// to the effect that Ascensio System SIA expressly excludes the warranty of non-infringement of
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// any third-party rights.
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//
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// This program is distributed WITHOUT ANY WARRANTY, without even the implied warranty
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// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For details, see
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// the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
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//
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// You can contact Ascensio System SIA at Lubanas st. 125a-25, Riga, Latvia, EU, LV-1021.
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//
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// The interactive user interfaces in modified source and object code versions of the Program must
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// display Appropriate Legal Notices, as required under Section 5 of the GNU AGPL version 3.
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//
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// Pursuant to Section 7(b) of the License you must retain the original Product logo when
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// distributing the program. Pursuant to Section 7(e) we decline to grant you any rights under
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// trademark law for use of our trademarks.
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//
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// All the Product's GUI elements, including illustrations and icon sets, as well as technical writing
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// content are licensed under the terms of the Creative Commons Attribution-ShareAlike 4.0
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// International. See the License terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
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using Constants = ASC.Core.Configuration.Constants;
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namespace ASC.Core.Security.Authorizing;
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[Scope]
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class PermissionResolver : IPermissionResolver
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{
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private readonly AzManager _azManager;
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public PermissionResolver(AzManager azManager)
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{
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_azManager = azManager ?? throw new ArgumentNullException(nameof(azManager));
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}
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public bool Check(ISubject subject, params IAction[] actions)
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{
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return Check(subject, null, null, actions);
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}
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public bool Check(ISubject subject, ISecurityObjectId objectId, ISecurityObjectProvider securityObjProvider, params IAction[] actions)
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{
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var denyActions = GetDenyActions(subject, actions, objectId, securityObjProvider);
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return denyActions.Length == 0;
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}
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public void Demand(ISubject subject, params IAction[] actions)
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{
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Demand(subject, null, null, actions);
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}
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public void Demand(ISubject subject, ISecurityObjectId objectId, ISecurityObjectProvider securityObjProvider, params IAction[] actions)
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{
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var denyActions = GetDenyActions(subject, actions, objectId, securityObjProvider);
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if (0 < denyActions.Length)
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{
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throw new AuthorizingException(
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subject,
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Array.ConvertAll(denyActions, r => r._targetAction),
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Array.ConvertAll(denyActions, r => r._denySubject),
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Array.ConvertAll(denyActions, r => r._denyAction));
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}
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}
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private DenyResult[] GetDenyActions(ISubject subject, IAction[] actions, ISecurityObjectId objectId, ISecurityObjectProvider securityObjProvider)
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{
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var denyActions = new List<DenyResult>();
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if (actions == null)
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{
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actions = Array.Empty<IAction>();
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}
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if (subject == null)
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{
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denyActions = actions.Select(a => new DenyResult(a, null, null)).ToList();
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}
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else if (subject is ISystemAccount && subject.ID == Constants.CoreSystem.ID)
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{
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// allow all
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}
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else
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{
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ISubject denySubject = null;
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IAction denyAction = null;
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foreach (var action in actions)
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{
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var allow = _azManager.CheckPermission(subject, action, objectId, securityObjProvider, out denySubject, out denyAction);
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if (!allow)
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{
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denyActions.Add(new DenyResult(action, denySubject, denyAction));
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break;
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}
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}
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}
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return denyActions.ToArray();
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}
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private class DenyResult
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{
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public readonly IAction _targetAction;
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public readonly ISubject _denySubject;
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public readonly IAction _denyAction;
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public DenyResult(IAction targetAction, ISubject denySubject, IAction denyAction)
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{
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_targetAction = targetAction;
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_denySubject = denySubject;
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_denyAction = denyAction;
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}
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}
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}
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