Merge remote-tracking branch 'origin/master'

src/bin/message.rs

@@ -0,0 +1,75 @@
+const KEYLENGTH: u8 = 32;
+
+pub enum PayloadType {
+    //0-31 system messages (plaintext)
+    Ping = 1,
+    Pong = 2,
+    Error = 3,
+    //32 - 63 Serverside messages (currently plaintext)
+    Init = 32,
+    Join = 33,
+    Exit = 34,
+    //64 -95 initial setup messages(plaintext)
+    DhSetup = 64,
+    DhReturn = 65,
+    //96 - 127 client-client setup messages(DH or old KEY encrypted)
+    AUTHORIZE = 96,
+    KeyCurrent = 97,
+    KeyNew = 98,
+    //128-159 main messages (shared KEY encrypted)
+    Msg = 128,
+    //160-255 reserved
+}
+
+struct Message {
+    // Eigenschaften der Klasse
+    src_id: u32,
+    dest_id: u32,
+    size: u16,
+    payload: Vec<u8>,
+}
+
+impl Message {
+    fn new(src_id: u32, dest_id: u32, size: u16, msg_type: PayloadType) -> Message {
+        let mut msg = Message {
+            src_id: src_id,
+            dest_id: dest_id,
+            size: size,
+            payload: Vec::with_capacity(size.into()),
+        };
+        msg.payload[0] = msg_type as u8;
+        msg
+    }
+
+    fn recive(input: Vec<u8>) -> Message {
+        let byte1 = input.get(0).expect("Fail to Read Byte 1");
+        let byte2 = input.get(1).expect("Fail to Read Byte 2");
+        let byte3 = input.get(2).expect("Fail to Read Byte 3");
+        let byte4 = input.get(3).expect("Fail to Read Byte 4");
+
+        let src_id: u32 =
+            (byte1 << 24) as u32 | (byte2 << 16) as u32 | (byte3 << 8) as u32 | (byte4 << 0) as u32;
+
+        let byte5 = input.get(5).expect("Fail to Read Byte 5");
+        let byte6 = input.get(6).expect("Fail to Read Byte 6");
+        let byte7 = input.get(7).expect("Fail to Read Byte 7");
+        let byte8 = input.get(8).expect("Fail to Read Byte 8");
+
+        let dest_id: u32 =
+            (byte5 << 24) as u32 | (byte6 << 16) as u32 | (byte7 << 8) as u32 | (byte8 << 0) as u32;
+
+        let byte9 = input.get(9).expect("Fail to Read byte 9");
+        let byte10 = input.get(10).expect("Fail to Read byte 10");
+
+        let size = (byte9 << 8) as u16 | (byte10 << 0) as u16;
+        assert!(size > 0, "Ungültige size größe size = {}", size);
+
+        Message {
+            src_id: src_id,
+            dest_id: dest_id,
+            size: size,
+            payload: (&input[11..]).to_vec(),
+        }
+    }
+    // Methoden der Klasse
+}