Restore SEBPatch

SafeExamBrowser.Proctoring/ScreenProctoring/Service/Requests/ScreenShotRequest.cs

@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2024 ETH Zürich, IT Services
+ * 
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+using System;
+using System.Net;
+using System.Net.Http;
+using SafeExamBrowser.Logging.Contracts;
+using SafeExamBrowser.Proctoring.ScreenProctoring.Data;
+using SafeExamBrowser.Proctoring.ScreenProctoring.Imaging;
+using SafeExamBrowser.Settings.Proctoring;
+
+namespace SafeExamBrowser.Proctoring.ScreenProctoring.Service.Requests
+{
+	internal class ScreenShotRequest : Request
+	{
+		internal ScreenShotRequest(Api api, HttpClient httpClient, ILogger logger, Parser parser) : base(api, httpClient, logger, parser)
+		{
+		}
+
+		internal bool TryExecute(MetaData metaData, ScreenShot screenShot, string sessionId, out int health, out string message)
+		{
+			var imageFormat = (Header.IMAGE_FORMAT, ToString(screenShot.Format));
+			var metdataJson = (Header.METADATA, WebUtility.UrlEncode(metaData.ToJson()));
+			var timestamp = (Header.TIMESTAMP, screenShot.CaptureTime.ToUnixTimestamp().ToString());
+			var url = api.ScreenShotEndpoint.Replace(Api.SESSION_ID, sessionId);
+			var success = TryExecute(HttpMethod.Post, url, out var response, screenShot.Data, ContentType.OCTET_STREAM, Authorization, imageFormat, metdataJson, timestamp);
+
+			health = default;
+			message = response.ToLogString();
+
+			if (success)
+			{
+				parser.TryParseHealth(response, out health);
+			}
+
+			return success;
+		}
+
+		private string ToString(ImageFormat format)
+		{
+			switch (format)
+			{
+				case ImageFormat.Bmp:
+					return "bmp";
+				case ImageFormat.Gif:
+					return "gif";
+				case ImageFormat.Jpg:
+					return "jpg";
+				case ImageFormat.Png:
+					return "png";
+				default:
+					throw new NotImplementedException($"Image format {format} is not yet implemented!");
+			}
+		}
+	}
+}