125 lines
5.1 KiB
C#
125 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;
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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 ILogger _log;
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private readonly IServiceScopeFactory _scopeFactory;
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private readonly JsonSerializerOptions _jsonSerializerOptions;
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private const string SignatureHeader = "x-docspace-signature-256";
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public const string WEBHOOK = "webhook";
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public const string WEBHOOK_SKIP_SSL = "webhookSkipSSL";
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public WebhookSender(ILoggerProvider options, IServiceScopeFactory scopeFactory, IHttpClientFactory clientFactory)
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{
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_log = options.CreateLogger("ASC.Webhooks.Core");
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_scopeFactory = scopeFactory;
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_clientFactory = clientFactory;
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_jsonSerializerOptions = new JsonSerializerOptions
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{
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DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull,
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IgnoreReadOnlyProperties = true
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};
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}
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public async Task Send(WebhookRequestIntegrationEvent webhookRequest, CancellationToken cancellationToken)
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{
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using var scope = _scopeFactory.CreateScope();
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var dbWorker = scope.ServiceProvider.GetRequiredService<DbWorker>();
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var entry = await dbWorker.ReadJournal(webhookRequest.WebhookId);
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var ssl = entry.Config.SSL;
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var status = 0;
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string responsePayload = null;
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string responseHeaders = null;
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string requestHeaders = null;
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var delivery = DateTime.MinValue;
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try
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{
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var clientName = ssl ? WEBHOOK : WEBHOOK_SKIP_SSL;
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var httpClient = _clientFactory.CreateClient(clientName);
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var request = new HttpRequestMessage(HttpMethod.Post, entry.Config.Uri)
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{
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Content = new StringContent(entry.RequestPayload, Encoding.UTF8, "application/json")
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};
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request.Headers.Add("Accept", "*/*");
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request.Headers.Add(SignatureHeader, $"sha256={GetSecretHash(entry.Config.SecretKey, entry.RequestPayload)}");
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requestHeaders = JsonSerializer.Serialize(request.Headers.ToDictionary(r => r.Key, v => v.Value), _jsonSerializerOptions);
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var response = await httpClient.SendAsync(request, cancellationToken);
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status = (int)response.StatusCode;
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responseHeaders = JsonSerializer.Serialize(response.Headers.ToDictionary(r => r.Key, v => v.Value), _jsonSerializerOptions);
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responsePayload = await response.Content.ReadAsStringAsync();
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_log.DebugResponse(response);
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}
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catch (HttpRequestException e)
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{
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if (e.StatusCode.HasValue)
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{
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status = (int)e.StatusCode.Value;
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}
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//if (e.InnerException is SocketException se)
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//{
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// status = (int)se.SocketErrorCode;
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//}
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responsePayload = e.Message;
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_log.ErrorWithException(e);
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}
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catch (Exception e)
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{
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status = (int)HttpStatusCode.InternalServerError;
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_log.ErrorWithException(e);
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}
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delivery = DateTime.UtcNow;
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await dbWorker.UpdateWebhookJournal(entry.Id, status, delivery, requestHeaders, responsePayload, responseHeaders);
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}
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private string GetSecretHash(string secretKey, string body)
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{
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var secretBytes = Encoding.UTF8.GetBytes(secretKey);
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using var hasher = new HMACSHA256(secretBytes);
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var data = Encoding.UTF8.GetBytes(body);
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var hash = hasher.ComputeHash(data);
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return Convert.ToHexString(hash);
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}
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} |