DocSpace-client/common/ASC.Common/Utils/MailAddressUtils.cs

// (c) Copyright Ascensio System SIA 2010-2022
//
// This program is a free software product.
// You can redistribute it and/or modify it under the terms
// of the GNU Affero General Public License (AGPL) version 3 as published by the Free Software
// Foundation. In accordance with Section 7(a) of the GNU AGPL 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 details, see
// the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
//
// You can contact Ascensio System SIA at Lubanas st. 125a-25, Riga, Latvia, EU, LV-1021.
//
// The  interactive user interfaces in modified source and object code versions of the Program must
// display Appropriate Legal Notices, as required under Section 5 of the GNU AGPL version 3.
//
// Pursuant to Section 7(b) of the License you must retain the original Product logo when
// distributing the program. Pursuant to Section 7(e) we decline to grant you any rights under
// trademark law for use of our trademarks.
//
// All the Product's GUI elements, including illustrations and icon sets, as well as technical writing
// content are licensed under the terms of the Creative Commons Attribution-ShareAlike 4.0
// International. See the License terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode

namespace ASC.Common.Utils;

public static class MailAddressUtils
{
    public static MailAddress Create(string address)
    {
        if (!string.IsNullOrEmpty(address))
        {
            var firstPos = address.IndexOf('"');
            var lastPos = address.LastIndexOf('"');

            if (firstPos != -1 && firstPos < lastPos && address.IndexOf('"', firstPos + 1, lastPos - firstPos - 1) != -1)
            {
                address = new StringBuilder(address).Replace("\"", string.Empty, firstPos + 1, lastPos - firstPos - 1).ToString();
            }
        }

        return new MailAddress(address);
    }

    public static MailAddress Create(string address, string displayName)
    {
        if (!string.IsNullOrEmpty(displayName))
        {
            displayName = displayName.Replace("\"", string.Empty);

            if (125 < displayName.Length)
            {
                displayName = displayName.Substring(0, 125);
            }
        }

        return Create(ToSmtpAddress(address, displayName));
    }

    public static string ToEncodedString(this MailAddress m)
    {
        return ToSmtpAddress(m.Address, MimeHeaderUtils.EncodeMime(m.DisplayName));
    }

    private static string ToSmtpAddress(string address, string displayName)
    {
        return $"\"{displayName}\" <{address}>";
    }
}