Baseline: Ausgangszustand vor Modularisierung

Erster Commit des bestehenden monolithischen WinForms-Copytraders, inklusive der Alt-Backups (*.bak), damit diese dauerhaft in der Historie rekonstruierbar bleiben. Threema-Lib unter libs/ wurde vendored (nested .git entfernt). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-01 13:16:16 +02:00
commit 475d396f80
147 changed files with 25455 additions and 0 deletions
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+using Newtonsoft.Json.Linq;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using IcgSoftware.Threema.CoreMsgApi.Exceptions;
+
+namespace IcgSoftware.Threema.CoreMsgApi.Messages
+{
+	class FileMessage : ThreemaMessage
+	{
+		public const int TYPE_CODE = 0x17;
+
+		private const string KEY_BLOB_ID = "b";
+		private const string KEY_THUMBNAIL_BLOB_ID = "t";
+		private const string KEY_ENCRYPTION_KEY = "k";
+		private const string KEY_MIME_TYPE = "m";
+		private const string KEY_FILE_NAME = "n";
+		private const string KEY_FILE_SIZE = "s";
+		private const string KEY_TYPE = "i";
+
+		private readonly byte[] blobId;
+		private readonly byte[] encryptionKey;
+		private readonly string mimeType;
+		private readonly string fileName;
+		private readonly int fileSize;
+		private readonly byte[] thumbnailBlobId;
+
+		public FileMessage(byte[] blobId, byte[] encryptionKey, String mimeType, String fileName, int fileSize, byte[] thumbnailBlobId)
+		{
+			this.blobId = blobId;
+			this.encryptionKey = encryptionKey;
+			this.mimeType = mimeType;
+			this.fileName = fileName;
+			this.fileSize = fileSize;
+			this.thumbnailBlobId = thumbnailBlobId;
+		}
+
+		public byte[] BlobId
+		{
+			get { return this.blobId; }
+		}
+
+		public byte[] EncryptionKey
+		{
+			get { return this.encryptionKey; }
+		}
+
+		public string MimeType
+		{
+			get { return this.mimeType; }
+		}
+
+		public string FileName
+		{
+			get { return this.fileName; }
+		}
+
+		public int FileSize
+		{
+			get { return this.fileSize; }
+		}
+
+		public byte[] ThumbnailBlobId
+		{
+			get { return this.thumbnailBlobId; }
+		}
+
+		public override int GetTypeCode()
+		{
+			return TYPE_CODE;
+		}
+
+		public override string ToString()
+		{
+			return string.Format("file message {0}", this.fileName);
+		}
+
+		public override byte[] GetData()
+		{
+			JObject jo = new JObject();
+			try
+			{
+				jo.Add(KEY_BLOB_ID, JToken.FromObject(DataUtils.ByteArrayToHexString(this.blobId)));
+				if (this.thumbnailBlobId != null)
+				{
+					jo.Add(KEY_THUMBNAIL_BLOB_ID, JToken.FromObject(DataUtils.ByteArrayToHexString(this.thumbnailBlobId)));
+				}
+				jo.Add(KEY_ENCRYPTION_KEY, JToken.FromObject(DataUtils.ByteArrayToHexString(this.encryptionKey)));
+				jo.Add(KEY_MIME_TYPE, JToken.FromObject(this.mimeType));
+				jo.Add(KEY_FILE_NAME, JToken.FromObject(this.fileName));
+				jo.Add(KEY_FILE_SIZE, JToken.FromObject(this.fileSize));
+				jo.Add(KEY_TYPE, JToken.FromObject(0));
+			}
+			catch (Exception)
+			{
+				throw new BadMessageException();
+			}
+
+			return Encoding.UTF8.GetBytes(jo.ToString());
+		}
+
+		public static FileMessage FromString(string json)
+		{
+			try
+			{
+				JObject jo = JObject.Parse(json);
+				byte[] encryptionKey = DataUtils.HexStringToByteArray(jo[KEY_ENCRYPTION_KEY].Value<string>());
+				string mimeType = jo[KEY_MIME_TYPE].Value<string>();
+				int fileSize = jo[KEY_FILE_SIZE].Value<int>();
+				byte[] blobId = DataUtils.HexStringToByteArray(jo[KEY_BLOB_ID].Value<string>());
+
+				string fileName;
+				byte[] thumbnailBlobId = null;
+
+				//optional field
+				if (jo.Children().Any(e => e.Path.EndsWith(KEY_THUMBNAIL_BLOB_ID)))
+				{
+					thumbnailBlobId = DataUtils.HexStringToByteArray(jo[KEY_THUMBNAIL_BLOB_ID].Value<string>());
+				}
+
+				if (jo.Children().Any(e => e.Path.EndsWith(KEY_FILE_NAME)))
+				{
+					fileName = jo[KEY_FILE_NAME].Value<string>();
+				}
+				else
+				{
+					fileName = "unnamed";
+				}
+
+				return new FileMessage(
+						blobId,
+						encryptionKey,
+						mimeType,
+						fileName,
+						fileSize,
+						thumbnailBlobId
+				);
+			}
+			catch
+			{
+				throw new BadMessageException();
+			}
+		}
+	}
+}