128 lines
5.1 KiB
C#
128 lines
5.1 KiB
C#
// (c) Copyright Ascensio System SIA 2010-2022
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//
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// This program is a free software product.
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// You can redistribute it and/or modify it under the terms
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// of the GNU Affero General Public License (AGPL) version 3 as published by the Free Software
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// Foundation. In accordance with Section 7(a) of the GNU AGPL its Section 15 shall be amended
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// to the effect that Ascensio System SIA expressly excludes the warranty of non-infringement of
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// any third-party rights.
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//
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// This program is distributed WITHOUT ANY WARRANTY, without even the implied warranty
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// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For details, see
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// the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
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//
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// You can contact Ascensio System SIA at Lubanas st. 125a-25, Riga, Latvia, EU, LV-1021.
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//
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// The interactive user interfaces in modified source and object code versions of the Program must
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// display Appropriate Legal Notices, as required under Section 5 of the GNU AGPL version 3.
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//
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// Pursuant to Section 7(b) of the License you must retain the original Product logo when
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// distributing the program. Pursuant to Section 7(e) we decline to grant you any rights under
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// trademark law for use of our trademarks.
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//
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// All the Product's GUI elements, including illustrations and icon sets, as well as technical writing
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// content are licensed under the terms of the Creative Commons Attribution-ShareAlike 4.0
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// International. See the License terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
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namespace ASC.Webhooks.Service;
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[Singletone]
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public class WebhookSender
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{
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private readonly IHttpClientFactory _clientFactory;
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private readonly ILog _log;
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public int? RepeatCount { get; init; }
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private readonly IServiceScopeFactory _scopeFactory;
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public WebhookSender(IOptionsMonitor<ILog> options, IServiceScopeFactory scopeFactory, Settings settings, IHttpClientFactory clientFactory)
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{
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_log = options.Get("ASC.Webhooks.Core");
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_scopeFactory = scopeFactory;
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RepeatCount = settings.RepeatCount;
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_clientFactory = clientFactory;
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}
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public async Task Send(WebhookRequest webhookRequest, CancellationToken cancellationToken)
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{
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using var scope = _scopeFactory.CreateScope();
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var dbWorker = scope.ServiceProvider.GetService<DbWorker>();
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var entry = dbWorker.ReadFromJournal(webhookRequest.Id);
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var id = entry.Id;
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var requestURI = entry.Uri;
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var secretKey = entry.SecretKey;
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var data = entry.Payload;
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HttpResponseMessage response = new HttpResponseMessage();
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HttpRequestMessage request = new HttpRequestMessage();
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for (int i = 0; i < RepeatCount; i++)
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{
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try
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{
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request = new HttpRequestMessage(HttpMethod.Post, requestURI);
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request.Headers.Add("Accept", "*/*");
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request.Headers.Add("Secret", "SHA256=" + GetSecretHash(secretKey, data));
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request.Content = new StringContent(
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data,
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Encoding.UTF8,
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"application/json");
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var httpClient = _clientFactory.CreateClient();
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response = await httpClient.SendAsync(request, cancellationToken);
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if (response.IsSuccessStatusCode)
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{
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UpdateDb(dbWorker, id, response, request, ProcessStatus.Success);
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_log.Debug("Response: " + response);
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break;
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}
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else if (i == RepeatCount - 1)
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{
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UpdateDb(dbWorker, id, response, request, ProcessStatus.Failed);
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_log.Debug("Response: " + response);
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}
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}
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catch (Exception ex)
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{
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if (i == RepeatCount - 1)
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{
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UpdateDb(dbWorker, id, response, request, ProcessStatus.Failed);
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}
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_log.Error(ex.Message);
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continue;
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}
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}
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}
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private string GetSecretHash(string secretKey, string body)
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{
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string computedSignature;
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var secretBytes = Encoding.UTF8.GetBytes(secretKey);
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using (var hasher = new HMACSHA256(secretBytes))
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{
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var data = Encoding.UTF8.GetBytes(body);
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computedSignature = BitConverter.ToString(hasher.ComputeHash(data));
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}
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return computedSignature;
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}
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private void UpdateDb(DbWorker dbWorker, int id, HttpResponseMessage response, HttpRequestMessage request, ProcessStatus status)
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{
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var responseHeaders = JsonSerializer.Serialize(response.Headers.ToDictionary(r => r.Key, v => v.Value));
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var requestHeaders = JsonSerializer.Serialize(request.Headers.ToDictionary(r => r.Key, v => v.Value));
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string responsePayload;
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using (var streamReader = new StreamReader(response.Content.ReadAsStream()))
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{
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var responseContent = streamReader.ReadToEnd();
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responsePayload = JsonSerializer.Serialize(responseContent);
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}
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dbWorker.UpdateWebhookJournal(id, status, responsePayload, responseHeaders, requestHeaders);
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}
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} |