253 lines
11 KiB
C#
253 lines
11 KiB
C#
/*
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*
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* (c) Copyright Ascensio System Limited 2010-2018
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*
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* This program is freeware. You can redistribute it and/or modify it under the terms of the GNU
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* General Public License (GPL) version 3 as published by the Free Software Foundation (https://www.gnu.org/copyleft/gpl.html).
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* In accordance with Section 7(a) of the GNU GPL its Section 15 shall be amended to the effect that
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* Ascensio System SIA expressly excludes the warranty of non-infringement of any third-party rights.
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*
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* THIS PROGRAM IS DISTRIBUTED WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY OR
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* FITNESS FOR A PARTICULAR PURPOSE. For more details, see GNU GPL at https://www.gnu.org/copyleft/gpl.html
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*
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* You can contact Ascensio System SIA by email at sales@onlyoffice.com
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*
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* The interactive user interfaces in modified source and object code versions of ONLYOFFICE must display
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* Appropriate Legal Notices, as required under Section 5 of the GNU GPL version 3.
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*
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* Pursuant to Section 7 § 3(b) of the GNU GPL you must retain the original ONLYOFFICE logo which contains
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* relevant author attributions when distributing the software. If the display of the logo in its graphic
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* form is not reasonably feasible for technical reasons, you must include the words "Powered by ONLYOFFICE"
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* in every copy of the program you distribute.
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* Pursuant to Section 7 § 3(e) we decline to grant you any rights under trademark law for use of our trademarks.
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*
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*/
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using System;
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using System.Linq;
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using System.Net;
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using System.Threading.Tasks;
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using System.Web;
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using System.Xml;
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using ASC.Common;
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using ASC.Common.Logging;
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using ASC.Common.Web;
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using ASC.Core;
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using ASC.Files.Resources;
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using ASC.Web.Core.Files;
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using ASC.Web.Files.Classes;
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using ASC.Web.Files.Helpers;
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using ASC.Web.Files.Services.NotifyService;
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using ASC.Web.Studio.Utility;
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using Microsoft.AspNetCore.Http;
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using Microsoft.Extensions.Options;
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namespace ASC.Web.Files.HttpHandlers
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{
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public class DocuSignHandler
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{
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public static string Path(FilesLinkUtility filesLinkUtility)
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{
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return filesLinkUtility.FilesBaseAbsolutePath + "httphandlers/docusignhandler.ashx";
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}
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private ILog Log { get; set; }
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public RequestDelegate Next { get; }
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public TenantExtra TenantExtra { get; }
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public DocuSignHelper DocuSignHelper { get; }
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public SecurityContext SecurityContext { get; }
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public NotifyClient NotifyClient { get; }
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public DocuSignHandler(
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RequestDelegate next,
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IOptionsMonitor<ILog> optionsMonitor,
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TenantExtra tenantExtra,
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DocuSignHelper docuSignHelper,
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SecurityContext securityContext,
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NotifyClient notifyClient)
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{
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Next = next;
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TenantExtra = tenantExtra;
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DocuSignHelper = docuSignHelper;
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SecurityContext = securityContext;
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NotifyClient = notifyClient;
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Log = optionsMonitor.CurrentValue;
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}
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public async Task Invoke(HttpContext context)
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{
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if (TenantExtra.IsNotPaid())
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{
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context.Response.StatusCode = (int)HttpStatusCode.PaymentRequired;
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context.Response.WriteAsync("Payment Required.").Wait();
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return;
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}
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try
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{
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switch ((context.Request.Query[FilesLinkUtility.Action].FirstOrDefault() ?? "").ToLower())
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{
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case "redirect":
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Redirect(context);
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break;
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case "webhook":
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Webhook(context);
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break;
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default:
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throw new HttpException((int)HttpStatusCode.BadRequest, FilesCommonResource.ErrorMassage_BadRequest);
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}
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}
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catch (InvalidOperationException e)
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{
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throw new HttpException((int)HttpStatusCode.InternalServerError, FilesCommonResource.ErrorMassage_BadRequest, e);
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}
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await Next.Invoke(context);
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}
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private void Redirect(HttpContext context)
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{
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Log.Info("DocuSign redirect query: " + context.Request.QueryString);
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var eventRedirect = context.Request.Query["event"].FirstOrDefault();
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switch (eventRedirect.ToLower())
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{
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case "send":
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context.Response.Redirect(PathProvider.StartURL + "#message/" + HttpUtility.UrlEncode(FilesCommonResource.DocuSignStatusSended), true);
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break;
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case "save":
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case "cancel":
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context.Response.Redirect(PathProvider.StartURL + "#error/" + HttpUtility.UrlEncode(FilesCommonResource.DocuSignStatusNotSended), true);
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break;
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case "error":
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case "sessionend":
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context.Response.Redirect(PathProvider.StartURL + "#error/" + HttpUtility.UrlEncode(FilesCommonResource.DocuSignStatusError), true);
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break;
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}
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context.Response.Redirect(PathProvider.StartURL, true);
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}
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private const string XmlPrefix = "docusign";
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private void Webhook(HttpContext context)
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{
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Log.Info("DocuSign webhook: " + context.Request.QueryString);
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try
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{
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var xmldoc = new XmlDocument();
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xmldoc.Load(context.Request.Body);
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Log.Info("DocuSign webhook outerXml: " + xmldoc.OuterXml);
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var mgr = new XmlNamespaceManager(xmldoc.NameTable);
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mgr.AddNamespace(XmlPrefix, "http://www.docusign.net/API/3.0");
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var envelopeStatusNode = GetSingleNode(xmldoc, "DocuSignEnvelopeInformation/" + XmlPrefix + ":EnvelopeStatus", mgr);
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var envelopeId = GetSingleNode(envelopeStatusNode, "EnvelopeID", mgr).InnerText;
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var subject = GetSingleNode(envelopeStatusNode, "Subject", mgr).InnerText;
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var statusString = GetSingleNode(envelopeStatusNode, "Status", mgr).InnerText;
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if (!Enum.TryParse(statusString, true, out DocuSignStatus status))
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{
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throw new Exception("DocuSign webhook unknown status: " + statusString);
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}
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Log.Info("DocuSign webhook: " + envelopeId + " " + subject + " " + status);
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var customFieldUserIdNode = GetSingleNode(envelopeStatusNode, "CustomFields/" + XmlPrefix + ":CustomField[" + XmlPrefix + ":Name='" + DocuSignHelper.UserField + "']", mgr);
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var userIdString = GetSingleNode(customFieldUserIdNode, "Value", mgr).InnerText;
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Auth(userIdString);
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switch (status)
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{
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case DocuSignStatus.Completed:
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var documentStatuses = GetSingleNode(envelopeStatusNode, "DocumentStatuses", mgr);
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foreach (XmlNode documentStatus in documentStatuses.ChildNodes)
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{
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try
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{
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var documentId = GetSingleNode(documentStatus, "ID", mgr).InnerText;
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var documentName = GetSingleNode(documentStatus, "Name", mgr).InnerText;
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string folderId = null;
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string sourceTitle = null;
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var documentFiels = GetSingleNode(documentStatus, "DocumentFields", mgr, true);
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if (documentFiels != null)
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{
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var documentFieldFolderNode = GetSingleNode(documentFiels, "DocumentField[" + XmlPrefix + ":Name='" + FilesLinkUtility.FolderId + "']", mgr, true);
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if (documentFieldFolderNode != null)
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{
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folderId = GetSingleNode(documentFieldFolderNode, "Value", mgr).InnerText;
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}
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var documentFieldTitleNode = GetSingleNode(documentFiels, "DocumentField[" + XmlPrefix + ":Name='" + FilesLinkUtility.FileTitle + "']", mgr, true);
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if (documentFieldTitleNode != null)
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{
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sourceTitle = GetSingleNode(documentFieldTitleNode, "Value", mgr).InnerText;
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}
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}
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var file = DocuSignHelper.SaveDocument(envelopeId, documentId, documentName, folderId);
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NotifyClient.SendDocuSignComplete(file, sourceTitle ?? documentName);
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}
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catch (Exception ex)
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{
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Log.Error("DocuSign webhook save document: " + documentStatus.InnerText, ex);
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}
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}
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break;
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case DocuSignStatus.Declined:
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case DocuSignStatus.Voided:
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var statusFromResource = status == DocuSignStatus.Declined
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? FilesCommonResource.DocuSignStatusDeclined
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: FilesCommonResource.DocuSignStatusVoided;
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NotifyClient.SendDocuSignStatus(subject, statusFromResource);
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break;
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}
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}
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catch (Exception e)
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{
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Log.Error("DocuSign webhook", e);
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throw new HttpException((int)HttpStatusCode.BadRequest, e.Message);
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}
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}
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private void Auth(string userIdString)
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{
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if (!Guid.TryParse(userIdString ?? "", out var userId))
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{
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throw new Exception("DocuSign incorrect User ID: " + userIdString);
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}
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SecurityContext.AuthenticateMe(userId);
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}
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private static XmlNode GetSingleNode(XmlNode node, string xpath, XmlNamespaceManager mgr, bool canMiss = false)
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{
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var result = node.SelectSingleNode(XmlPrefix + ":" + xpath, mgr);
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if (!canMiss && result == null) throw new Exception(xpath + " is null");
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return result;
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}
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}
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public static class DocuSignHandlerExtension
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{
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public static DIHelper AddDocuSignHandlerService(this DIHelper services)
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{
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services.TryAddScoped<DocuSignHandler>();
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return services
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.AddFilesLinkUtilityService()
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.AddTenantExtraService()
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.AddDocuSignHelperService()
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.AddSecurityContextService()
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.AddNotifyClientService();
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}
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}
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} |