DocSpace-client/common/ASC.FederatedLogin/LoginProviders/EncryptionLoginProvider.cs

/*
 *
 * (c) Copyright Ascensio System Limited 2010-2018
 *
 * This program is freeware. You can redistribute it and/or modify it under the terms of the GNU 
 * General Public License (GPL) version 3 as published by the Free Software Foundation (https://www.gnu.org/copyleft/gpl.html). 
 * In accordance with Section 7(a) of the GNU GPL its Section 15 shall be amended to the effect that 
 * Ascensio System SIA expressly excludes the warranty of non-infringement of any third-party rights.
 *
 * THIS PROGRAM IS DISTRIBUTED WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY OR
 * FITNESS FOR A PARTICULAR PURPOSE. For more details, see GNU GPL at https://www.gnu.org/copyleft/gpl.html
 *
 * You can contact Ascensio System SIA by email at sales@onlyoffice.com
 *
 * The interactive user interfaces in modified source and object code versions of ONLYOFFICE must display 
 * Appropriate Legal Notices, as required under Section 5 of the GNU GPL version 3.
 *
 * Pursuant to Section 7 § 3(b) of the GNU GPL you must retain the original ONLYOFFICE logo which contains 
 * relevant author attributions when distributing the software. If the display of the logo in its graphic 
 * form is not reasonably feasible for technical reasons, you must include the words "Powered by ONLYOFFICE" 
 * in every copy of the program you distribute. 
 * Pursuant to Section 7 § 3(e) we decline to grant you any rights under trademark law for use of our trademarks.
 *
*/


using SecurityContext = ASC.Core.SecurityContext;

namespace ASC.Web.Studio.Core
{
    [Scope]
    public class EncryptionLoginProvider
    {
        private readonly SecurityContext _securityContext;
        private readonly Signature _signature;
        private readonly InstanceCrypto _instanceCrypto;
        private readonly IOptionsSnapshot<AccountLinker> _snapshot;

        public EncryptionLoginProvider(
            SecurityContext securityContext,
            Signature signature,
            InstanceCrypto instanceCrypto,
            IOptionsSnapshot<AccountLinker> snapshot)
        {
            _securityContext = securityContext;
            _signature = signature;
            _instanceCrypto = instanceCrypto;
            _snapshot = snapshot;
        }


        public void SetKeys(Guid userId, string keys)
        {
            if (string.IsNullOrEmpty(keys))
            {
                return;
            }

            var loginProfile = new LoginProfile(_signature, _instanceCrypto)
            {
                Provider = ProviderConstants.Encryption,
                Name = _instanceCrypto.Encrypt(keys)
            };

            var linker = _snapshot.Get("webstudio");
            linker.AddLink(userId.ToString(), loginProfile);
        }

        public string GetKeys()
        {
            return GetKeys(_securityContext.CurrentAccount.ID);
        }

        public string GetKeys(Guid userId)
        {
            var linker = _snapshot.Get("webstudio");
            var profile = linker.GetLinkedProfiles(userId.ToString(), ProviderConstants.Encryption).FirstOrDefault();
            if (profile == null)
            {
                return null;
            }

            var keys = _instanceCrypto.Decrypt(profile.Name);

            return keys;
        }
    }
}