DocSpace-buildtools/products/ASC.CRM/Server/Middlewares/OrganisationLogoHandlerMiddleware.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 System;
using System.Text.Json;

using ASC.CRM.Core;
using ASC.CRM.Resources;
using ASC.Web.Core.Files;
using ASC.Web.Core.Utility;
using ASC.Web.CRM.Classes;
using ASC.Web.Studio.Core;

using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Http;

namespace ASC.Web.CRM.HttpHandlers
{
    public class OrganisationLogoHandlerMiddleware
    {
        private readonly RequestDelegate _next;

        public OrganisationLogoHandlerMiddleware(
            RequestDelegate next
            )
        {
            _next = next;
        }

        public System.Threading.Tasks.Task Invoke(HttpContext context,
            CrmSecurity crmSecurity,
            SetupInfo setupInfo,
            FileSizeComment fileSizeComment,
            ContactPhotoManager contactPhotoManager,
            OrganisationLogoManager organisationLogoManager)
        {
            context.Request.EnableBuffering();

            if (!crmSecurity.IsAdmin)
                throw crmSecurity.CreateSecurityException();

            return InternalInvoke(context, crmSecurity, setupInfo, fileSizeComment, contactPhotoManager, organisationLogoManager);
        }

        private async System.Threading.Tasks.Task InternalInvoke(HttpContext context,
            CrmSecurity crmSecurity,
            SetupInfo setupInfo,
            FileSizeComment fileSizeComment,
            ContactPhotoManager contactPhotoManager,
            OrganisationLogoManager organisationLogoManager)
        { 
            var fileUploadResult = new FileUploadResult();

            if (context.Request.Form.Files.Count == 0)
            {
                await context.Response.WriteAsync(JsonSerializer.Serialize(fileUploadResult));
            }

            var fileName = context.Request.Form.Files[0].FileName;
            var contentLength = context.Request.Form.Files[0].Length;

            if (String.IsNullOrEmpty(fileName) || contentLength == 0)
                throw new InvalidOperationException(CRMErrorsResource.InvalidFile);

            if (0 < setupInfo.MaxImageUploadSize && setupInfo.MaxImageUploadSize < contentLength)
            {
                fileUploadResult.Success = false;
                fileUploadResult.Message = fileSizeComment.GetFileImageSizeNote(CRMCommonResource.ErrorMessage_UploadFileSize, false).HtmlEncode();

                await context.Response.WriteAsync(JsonSerializer.Serialize(fileUploadResult));
            }

            if (FileUtility.GetFileTypeByFileName(fileName) != FileType.Image)
            {
                fileUploadResult.Success = false;
                fileUploadResult.Message = CRMJSResource.ErrorMessage_NotImageSupportFormat.HtmlEncode();

                await context.Response.WriteAsync(JsonSerializer.Serialize(fileUploadResult));
            }

            try
            {
                var imageData = Global.ToByteArray(context.Request.Form.Files[0].OpenReadStream());
                var imageFormat = contactPhotoManager.CheckImgFormat(imageData);
                var photoUri = await organisationLogoManager.UploadLogoAsync(imageData, imageFormat);

                fileUploadResult.Success = true;
                fileUploadResult.Data = photoUri;

                await context.Response.WriteAsync(JsonSerializer.Serialize(fileUploadResult));
            }
            catch (Exception exception)
            {
                fileUploadResult.Success = false;
                fileUploadResult.Message = exception.Message.HtmlEncode();

                await context.Response.WriteAsync(JsonSerializer.Serialize(fileUploadResult));
            }
        }
    }

    public static class OrganisationLogoHandlerMiddlewareExtensions
    {
        public static IApplicationBuilder UseOrganisationLogoHandler(this IApplicationBuilder builder)
        {
            return builder.UseMiddleware<OrganisationLogoHandlerMiddleware>();
        }
    }
}