chagned the packet marshal and unmarshal

src/packet/common.rs

@@ -1,5 +1,6 @@
 use crate::utils::Result;
 
+use super::packet::Packet;
 use byteorder::{BigEndian, ByteOrder};
 
 use serde_repr::*;
@@ -182,6 +183,24 @@ pub fn encode_packet_encrypted<T: serde::Serialize>(
     Ok(result)
 }
 
+pub fn encode_packet_packet(cmn: &Common, pkt: &Packet<'_>) -> Result<Vec<u8>> {
+    let hdr = cmn.encode();
+    let body = pkt.marshal()?;
+
+    let mut result = Vec::with_capacity(4 + hdr.len() + body.len());
+    let total_size = (2 + hdr.len() + body.len()) as u16;
+    // insert total size
+    result.extend_from_slice(&total_size.to_be_bytes());
+    // packet_id
+    result.extend_from_slice(&[0, 0]);
+    // insert header
+    result.extend_from_slice(&hdr);
+    // insert body
+    result.extend_from_slice(&body);
+
+    Ok(result)
+}
+
 pub fn encode_packet<T: serde::Serialize>(cmn: &Common, pkt: &T) -> Result<Vec<u8>> {
     // header
     let hdr = cmn.encode();

src/packet/packet.rs

@@ -1,17 +1,118 @@
-use crate::peer::SdlanSock;
-use serde::{Deserialize, Serialize};
+use crate::{
+    config,
+    peer::{SdlanSock, V6Info},
+    utils::{Result, SDLanError},
+};
+// use serde::{Deserialize, Serialize};
 
-#[derive(Serialize, Deserialize)]
-pub struct Packet {
+// #[derive(Serialize, Deserialize)]
+pub struct Packet<'a> {
     pub src_ip: u32,
     pub dst_ip: u32,
     pub sock: Option<SdlanSock>,
+    pub v6_info: Option<V6Info>,
+    pub data: &'a [u8],
+}
 
-    pub data: Vec<u8>,
+impl<'a> Packet<'a> {
+    pub fn unmarshal(data: &'a [u8], has_sock: bool, has_v6: bool) -> Result<Self> {
+        let mut tmp = data;
+        if data.len() < 8 {
+            return Err(SDLanError::NormalError("packet header data len error"));
+        }
+        let src_ip = u32::from_be_bytes(tmp[0..4].try_into().unwrap());
+        let dst_ip = u32::from_be_bytes(tmp[4..8].try_into().unwrap());
+        tmp = &tmp[8..];
+        let mut sock = None;
+        if has_sock {
+            if tmp.len() < 7 {
+                return Err(SDLanError::NormalError("packet socket data len error"));
+            }
+            let family = tmp[0];
+            let tempu8 = [tmp[1], tmp[2]];
+            let port = u16::from_be_bytes(tempu8);
+            let mut tmpsock = SdlanSock {
+                family,
+                port,
+                v4: [0; 4],
+                v6: [0; 16],
+            };
+            match family {
+                config::AF_INET6 => {
+                    if tmp.len() < 19 {
+                        return Err(SDLanError::NormalError("packet socket v6 len error"));
+                    }
+                    // size is guaranteed
+                    tmpsock.v6 = tmp[3..19].try_into().unwrap();
+                    tmp = &tmp[19..]
+                }
+                config::AF_INET => {
+                    // size is guaranteed
+                    tmpsock.v4 = tmp[3..7].try_into().unwrap();
+                    tmp = &tmp[7..]
+                }
+                other => {
+                    return Err(SDLanError::NormalError("packet socket family error"));
+                }
+            }
+            sock = Some(tmpsock);
+        }
+        let mut v6_info = None;
+        if has_v6 {
+            if tmp.len() < 18 {
+                return Err(SDLanError::NormalError("packet v6_info len error"));
+            }
+            v6_info = Some(V6Info {
+                port: u16::from_be_bytes(tmp[0..2].try_into().unwrap()),
+                v6: tmp[2..18].try_into().unwrap(),
+            });
+            tmp = &tmp[18..];
+        }
+
+        Ok(Packet {
+            src_ip,
+            dst_ip,
+            sock,
+            v6_info,
+            data: tmp,
+        })
+    }
+
+    pub fn marshal(&self) -> Result<Vec<u8>> {
+        let mut result = Vec::new();
+        result.extend_from_slice(&self.src_ip.to_be_bytes());
+        result.extend_from_slice(&self.dst_ip.to_be_bytes());
+        if let Some(ref v) = self.sock {
+            result.push(v.family);
+            result.extend_from_slice(&v.port.to_be_bytes());
+            match v.family {
+                config::AF_INET => {
+                    result.extend_from_slice(&v.v4);
+                }
+                config::AF_INET6 => {
+                    result.extend_from_slice(&v.v6);
+                }
+                _other => {
+                    return Err(SDLanError::NormalError(
+                        "marshal packet error: unknown family",
+                    ));
+                } // _other=> return Err(SDLanError::NormalError("marshal packet error: unknown family"));
+            }
+        }
+        if let Some(ref v) = self.v6_info {
+            result.extend_from_slice(&v.port.to_be_bytes());
+            result.extend_from_slice(&v.v6);
+        }
+        result.extend_from_slice(&self.data);
+
+        Ok(result)
+    }
 }
 
 #[cfg(test)]
 mod test {
+    use crate::config;
+    use crate::peer::V6Info;
     use crate::utils::Result;
     use crate::{config::AF_INET, packet::*, peer::SdlanSock, utils::gen_uuid};
 
@@ -20,25 +121,32 @@ mod test {
         let id = gen_uuid();
         let data = gen_uuid();
         let cmn1 = Common::new(&id);
-        let packet = Packet {
+        let mut packet = Packet {
             src_ip: 1,
             dst_ip: 2,
+            sock: None,
+            /*
             sock: Some(SdlanSock {
                 family: AF_INET,
                 port: 80,
                 v4: [1; 4],
                 v6: [1; 16],
             }),
-            data: data.into_bytes(),
+            */
+            v6_info: None,
+            data: data.as_bytes(),
             // data: &data.into_bytes(),
         };
 
-        let info = encode_packet(&cmn1, &packet)?;
+        let info = encode_packet_packet(&cmn1, &packet)?;
 
         let (cmn2, rest) = decode_common(&info)?;
         if cmn2.id != cmn1.id {
             panic!("cmn not equal");
         }
+
+        let packet2 = Packet::unmarshal(rest, false, false)?;
+        /*
         let data_str = std::str::from_utf8(rest);
         if let Err(e) = data_str {
             panic!("convert data failed: {}", e);
@@ -46,11 +154,10 @@ mod test {
             let data_str = data_str.unwrap();
             println!("got packet data: {}", data_str);
         }
-        let packet2: Packet = match serde_json::from_slice(rest) {
-            Ok(p) => p,
-            Err(e) => panic!("failed to unmarshal: {}", e),
-        };
+        */
         assert_eq!(packet.data, packet2.data);
+        assert_eq!(packet2.v6_info, None);
+        assert_eq!(packet2.sock, None);
         /*
         match packet2.data {
             Cow::Borrowed(d) => {
@@ -61,6 +168,97 @@ mod test {
             }
         }
         */
+        packet.sock = Some(SdlanSock {
+            family: config::AF_INET,
+            port: 12,
+            v4: [1; 4],
+            v6: [1; 16],
+        });
+
+        let info = encode_packet_packet(&cmn1, &packet)?;
+
+        let (cmn2, rest) = decode_common(&info)?;
+        if cmn2.id != cmn1.id {
+            panic!("cmn not equal");
+        }
+
+        let packet3 = Packet::unmarshal(rest, true, false)?;
+        match packet3.sock {
+            None => panic!("packet3, sock None"),
+            Some(ref sk) => {
+                assert_eq!(sk.family, config::AF_INET);
+                assert_eq!(sk.port, 12);
+                assert_eq!(sk.v4, [1; 4]);
+                assert_eq!(sk.v6, [0; 16]);
+            }
+        }
+        assert_eq!(packet3.v6_info, None);
+        assert_eq!(packet.data, packet3.data);
+
+        packet.v6_info = Some(V6Info {
+            port: 24,
+            v6: [2; 16],
+        });
+
+        let info = encode_packet_packet(&cmn1, &packet)?;
+
+        let (cmn2, rest) = decode_common(&info)?;
+        if cmn2.id != cmn1.id {
+            panic!("cmn not equal");
+        }
+
+        let packet4 = Packet::unmarshal(rest, true, true)?;
+        match packet4.sock {
+            None => panic!("packet3, sock None"),
+            Some(ref sk) => {
+                assert_eq!(sk.family, config::AF_INET);
+                assert_eq!(sk.port, 12);
+                assert_eq!(sk.v4, [1; 4]);
+                assert_eq!(sk.v6, [0; 16]);
+            }
+        }
+        match packet4.v6_info {
+            None => panic!("packet4, v6_info None"),
+            Some(ref v6) => {
+                assert_eq!(v6.port, 24);
+                assert_eq!(v6.v6, [2; 16]);
+            }
+        }
+        assert_eq!(packet.data, packet4.data);
+
+        packet.sock = Some(SdlanSock {
+            family: config::AF_INET6,
+            port: 24,
+            v4: [1; 4],
+            v6: [2; 16],
+        });
+
+        let info = encode_packet_packet(&cmn1, &packet)?;
+
+        let (cmn2, rest) = decode_common(&info)?;
+        if cmn2.id != cmn1.id {
+            panic!("cmn not equal");
+        }
+
+        let packet5 = Packet::unmarshal(rest, true, true)?;
+        match packet5.sock {
+            None => panic!("packet3, sock None"),
+            Some(ref sk) => {
+                assert_eq!(sk.family, config::AF_INET6);
+                assert_eq!(sk.port, 24);
+                assert_eq!(sk.v4, [0; 4]);
+                assert_eq!(sk.v6, [2; 16]);
+            }
+        }
+        match packet5.v6_info {
+            None => panic!("packet4, v6_info None"),
+            Some(ref v6) => {
+                assert_eq!(v6.port, 24);
+                assert_eq!(v6.v6, [2; 16]);
+            }
+        }
+        assert_eq!(packet.data, packet5.data);
+
         Ok(())
     }
 }

src/packet/register.rs

@@ -1,6 +1,6 @@
 use serde::{Deserialize, Serialize};
 
-use crate::peer::{IpSubnet, SdlanSock};
+use crate::peer::SdlanSock;
 
 #[derive(Serialize, Deserialize)]
 pub struct Register {

src/packet/register_ack.rs

@@ -2,6 +2,7 @@ use serde::{Deserialize, Serialize};
 
 use crate::peer::SdlanSock;
 
+#[derive(Serialize, Deserialize)]
 pub struct RegisterACK {
     pub cookie: u32,
     // 返回方的tun接口的ip地址