mirror of
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112 lines
4.1 KiB
C#
112 lines
4.1 KiB
C#
/*
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Copyright (c) 2017 Ahmed Kh. Zamil
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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using System;
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using System.Collections.Generic;
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using System.Text;
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using Esiur.Data;
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using Esiur.Core;
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using Esiur.Resource;
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using Esiur.Security.Authority;
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using Esiur.Data.Types;
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namespace Esiur.Security.Permissions;
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public class UserPermissionsManager : IPermissionsManager
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{
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private static readonly IReadOnlyDictionary<ActionType, string> ResourcePermissionKeys =
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new Dictionary<ActionType, string>
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{
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[ActionType.Attach] = "_attach",
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[ActionType.Detach] = "_detach",
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[ActionType.Delete] = "_delete",
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[ActionType.CreateResource] = "_create_resource",
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[ActionType.InquireAttributes] = "_get_attributes",
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[ActionType.UpdateAttributes] = "_set_attributes",
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[ActionType.AddChild] = "_add_child",
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[ActionType.RemoveChild] = "_remove_child",
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[ActionType.AddParent] = "_add_parent",
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[ActionType.RemoveParent] = "_remove_parent",
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[ActionType.Rename] = "_rename",
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[ActionType.ViewTypeDef] = "_view_typedef"
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};
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IResource resource;
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Map<string, object> settings;
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public Map<string,object> Settings => settings;
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public Ruling Applicable(IResource resource, Session session, ActionType action, MemberDef member, object inquirer)
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{
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if (settings == null || session == null)
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return Ruling.Denied;
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Map<string, object> userPermissions = null;
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if (!string.IsNullOrEmpty(session.RemoteIdentity)
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&& settings.TryGetValue(session.RemoteIdentity, out var identityPermissions))
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userPermissions = identityPermissions as Map<string, object>;
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else if (settings.TryGetValue("public", out var publicPermissions))
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userPermissions = publicPermissions as Map<string, object>;
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if (userPermissions == null)
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return Ruling.Denied;
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if (ResourcePermissionKeys.TryGetValue(action, out var resourcePermissionKey))
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return IsAllowed(userPermissions, resourcePermissionKey);
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// Member-level access is fail closed: an absent member/action entry must
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// never fall through to Warehouse's compatibility defaults.
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if (member == null
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|| !userPermissions.TryGetValue(member.Name, out var rawMemberPermissions)
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|| rawMemberPermissions is not Map<string, object> memberPermissions)
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return Ruling.Denied;
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return IsAllowed(memberPermissions, action.ToString());
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}
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private static Ruling IsAllowed(Map<string, object> permissions, string key)
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=> permissions.TryGetValue(key, out var value)
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&& value is string text
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&& string.Equals(text, "yes", StringComparison.Ordinal)
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? Ruling.Allowed
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: Ruling.Denied;
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public UserPermissionsManager()
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{
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}
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public UserPermissionsManager(Map<string, object> settings)
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{
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this.settings = settings;
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}
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public bool Initialize(Map<string, object> settings, IResource resource)
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{
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this.resource = resource;
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this.settings = settings;
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return true;
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}
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}
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