root request

client-gui/src/gui_app.rs

@@ -1,5 +1,5 @@
 use client_network::{
-    MerkleNode, MerkleTree, NetworkCommand, NetworkEvent, NodeHash, filename_to_string,
+    ChunkNode, MerkleNode, MerkleTree, NetworkCommand, NetworkEvent, NodeHash, filename_to_string,
     node_hash_to_hex_string,
 };
 use crossbeam_channel::{Receiver, Sender};
@@ -49,11 +49,11 @@ pub struct P2PClientApp {
 
 impl P2PClientApp {
     pub fn new(cmd_tx: Sender<NetworkCommand>, event_rx: Receiver<NetworkEvent>) -> Self {
-        let (root_hash, tree_content) = MerkleNode::generate_base_tree();
+        //let (root_hash, tree_content) = MerkleNode::generate_base_tree();
 
         let mut loaded_fs = HashMap::new();
-        let tree = MerkleTree::new(tree_content, root_hash);
+        //let tree = MerkleTree::new(tree_content, root_hash);
-        loaded_fs.insert("bob".to_string(), tree);
+        //loaded_fs.insert("bob".to_string(), tree);
 
         Self {
             remaining: std::time::Duration::from_secs(0),
@@ -124,22 +124,40 @@ impl eframe::App for P2PClientApp {
                     todo!();
 
                     //self.loaded_tree_nodes.insert(_peer_id, tree);
-                    self.status_message = "🔄 File tree updated successfully.".to_string();
+                    //self.status_message = "🔄 File tree updated successfully.".to_string();
                 }
                 NetworkEvent::FileTreeRootReceived(peer_id, root_hash) => {
-                    todo!();
+                    // todo!();
+
+                    /*self.status_message = format!(
+                        "🔄 Received Merkle Root from {}: {}",
+                        peer_id,
+                        &root_hash[..8]
+                    );*/
+
+                    if let Ok(chunknode) = ChunkNode::new(Vec::new()) {
+                        let mut data_map: HashMap<NodeHash, MerkleNode> = HashMap::new();
+                        data_map.insert(root_hash, MerkleNode::Chunk(chunknode));
+                        let tree = MerkleTree {
+                            data: data_map,
+                            root: root_hash,
+                        };
+                        match &self.active_peer {
+                            Some(activepeer) => {
+                                self.loaded_fs.insert(activepeer.clone(), tree);
+                            }
+                            None => {}
+                        }
+
+                        println!("tree created");
+                    }
 
-                    // self.status_message = format!("🔄 Received Merkle Root from {}: {}", peer_id, &root_hash[..8]);
-                    //
-                    //
                     //self.active_peer_id = Some(peer_id.clone());
-                    //
+
-                    //
+                    // Request the content of the root directory immediately
-                    // // Request the content of the root directory immediately
+                    /*let _ = self
-                    // let _ = self.network_cmd_tx.send(NetworkCommand::RequestDirectoryContent(
+                    .network_cmd_tx
-                    //     peer_id,
+                    .send(NetworkCommand::RequestDirectoryContent(peer_id, root_hash));*/
-                    //     root_hash,
-                    // ));
                 }
                 NetworkEvent::Connected(ip) => {
                     self.server_status = ServerStatus::Connected;
@@ -360,11 +378,12 @@ impl eframe::App for P2PClientApp {
                                     .loaded_fs
                                     .contains_key(self.active_peer.as_ref().unwrap())
                                 {
-                                    todo!();
+                                    //todo!();
-                                    // let _ = self.network_cmd_tx.send(NetworkCommand::RequestDirectoryContent(
+                                    let _ = self.network_cmd_tx.send(NetworkCommand::Discover(
-                                    //     peer.clone(),
+                                        peer.clone(),
-                                    //     peer.clone(),
+                                        "root".to_string(),
-                                    // ));
+                                        self.connected_address.clone(),
+                                    ));
                                 }
                             }
                             selectable.context_menu(|ui| {
@@ -508,7 +527,13 @@ impl P2PClientApp {
                                     entry.content_hash,
                                     tree,
                                     depth + 1,
-                                    Some(entry.filename),
+                                    Some(
+                                        entry
+                                            .filename
+                                            .as_slice()
+                                            .try_into()
+                                            .expect("incorrect size"),
+                                    ),
                                 );
                             }
                         });
@@ -529,7 +554,7 @@ impl P2PClientApp {
                         .enabled(true)
                         .show(ui, |ui| {
                             for child in &node.children_hashes {
-                                self.draw_file_node(ui, child.clone(), tree, depth + 1, None);
+                                self.draw_file_node(ui, child.content_hash, tree, depth + 1, None);
                             }
                         });
                 }

client-network/src/data.rs

@@ -80,7 +80,7 @@ impl MerkleTree {
     }
 }
 
-fn generate_random_file_node(
+/*fn generate_random_file_node(
     storage: &mut HashMap<NodeHash, MerkleNode>,
 ) -> Result<NodeHash, String> {
     let mut rng = rng();
@@ -110,9 +110,9 @@ fn generate_random_file_node(
         storage.insert(hash, node);
         Ok(hash)
     }
-}
+}*/
 
-fn generate_random_directory_node(
+/*fn generate_random_directory_node(
     depth: u32,
     max_depth: u32,
     storage: &mut HashMap<NodeHash, MerkleNode>,
@@ -172,7 +172,7 @@ fn generate_random_directory_node(
         storage.insert(hash, node);
         Ok(hash)
     }
-}
+}*/
 
 #[derive(Debug, Clone)]
 pub struct ChunkNode {
@@ -208,7 +208,7 @@ impl ChunkNode {
 // Helper struct
 #[derive(Debug, Clone)]
 pub struct DirectoryEntry {
-    pub filename: [u8; FILENAME_HASH_SIZE],
+    pub filename: Vec<u8>,
     pub content_hash: NodeHash,
 }
 
@@ -240,7 +240,7 @@ pub struct BigNode {
 }
 
 impl BigNode {
-    pub fn new(children_hashes: Vec<NodeHash>) -> Result<Self, String> {
+    /*pub fn new(children_hashes: Vec<NodeHash>) -> Result<Self, String> {
         let n = children_hashes.len();
         if n < MIN_BIG_CHILDREN || n > MAX_BIG_CHILDREN {
             return Err(format!(
@@ -249,16 +249,17 @@ impl BigNode {
             ));
         }
         Ok(BigNode { children_hashes })
-    }
+    }*/
 }
 
 #[derive(Debug, Clone)]
 pub struct BigDirectoryNode {
-    pub children_hashes: Vec<NodeHash>,
+    //pub children_hashes: Vec<NodeHash>,
+    pub children_hashes: Vec<DirectoryEntry>,
 }
 
 impl BigDirectoryNode {
-    pub fn new(children_hashes: Vec<NodeHash>) -> Result<Self, String> {
+    /*pub fn new(children_hashes: Vec<NodeHash>) -> Result<Self, String> {
         let n = children_hashes.len();
         if n < MIN_BIG_CHILDREN || n > MAX_BIG_CHILDREN {
             return Err(format!(
@@ -267,6 +268,14 @@ impl BigDirectoryNode {
             ));
         }
         Ok(BigDirectoryNode { children_hashes })
+    }*/
+    pub fn new(entries: Vec<DirectoryEntry>) -> Result<Self, String> {
+        if entries.len() > MAX_DIRECTORY_ENTRIES {
+            return Err(format!("Directory exceeds {} bytes", entries.len()));
+        }
+        Ok(BigDirectoryNode {
+            children_hashes: entries,
+        })
     }
 }
 
@@ -301,14 +310,14 @@ impl MerkleNode {
             }
             MerkleNode::BigDirectory(node) => {
                 for hash in &node.children_hashes {
-                    bytes.extend_from_slice(hash);
+                    bytes.extend_from_slice(&hash.content_hash);
                 }
             }
         }
         bytes
     }
 
-    pub fn generate_random_tree(
+    /*pub fn generate_random_tree(
         max_depth: u32,
     ) -> Result<(NodeHash, HashMap<NodeHash, MerkleNode>), String> {
         let mut storage = HashMap::new();
@@ -317,9 +326,9 @@ impl MerkleNode {
         let root_hash = generate_random_directory_node(0, max_depth, &mut storage)?;
 
         Ok((root_hash, storage))
-    }
+    }*/
 
-    pub fn generate_base_tree() -> (NodeHash, HashMap<NodeHash, MerkleNode>) {
+    /*pub fn generate_base_tree() -> (NodeHash, HashMap<NodeHash, MerkleNode>) {
         let mut res = HashMap::new();
 
         let node1 = MerkleNode::Chunk(ChunkNode::new_random());
@@ -369,5 +378,5 @@ impl MerkleNode {
         res.insert(root_hash, root);
 
         (root_hash, res)
-    }
+    }*/
 }

client-network/src/datum_parsing.rs

@@ -1 +1,96 @@
-fn parse_received_datum(recevied_datum: Vec<u8>) {}
+use crate::{BigDirectoryNode, DirectoryEntry, DirectoryNode, MerkleNode, MerkleTree, NodeHash};
+use sha2::{Digest, Sha256};
+
+const CHUNK: u8 = 0;
+const DIRECTORY: u8 = 1;
+const BIG: u8 = 2;
+const BIGDIRECTORY: u8 = 3;
+
+fn parse_received_datum(recevied_datum: Vec<u8>, datum_length: usize, mut tree: MerkleTree) {
+    if datum_length > recevied_datum.len() {
+        return;
+    }
+    if datum_length < 32 + 64 {
+        return;
+    }
+    let hash_name: [u8; 32] = recevied_datum[..32].try_into().expect("error");
+    let sigstart = datum_length - 64;
+    let value = &recevied_datum[32..sigstart];
+    let value_slice = value.to_vec();
+    let signature: [u8; 32] = recevied_datum[sigstart..datum_length]
+        .try_into()
+        .expect("Taille incorrecte");
+    let datum_type = value_slice[0];
+    match datum_type {
+        CHUNK => {
+            tree.data.insert(
+                hash_name,
+                MerkleNode::Chunk(crate::ChunkNode { data: value_slice }),
+            );
+        }
+        DIRECTORY => {
+            let nb_entries = value_slice[1];
+            let mut dir_entries = Vec::new();
+            let mut offset = 1 as usize;
+            for i in 0..nb_entries {
+                offset = (offset as u8 + 64 * i) as usize;
+                let name = &recevied_datum[offset..offset + 32];
+                let mut hash = [0u8; 32];
+                hash.copy_from_slice(&recevied_datum[offset + 32..offset + 64]);
+                // envoyer un datum request
+                dir_entries.push(DirectoryEntry {
+                    filename: name.to_vec(),
+                    content_hash: hash,
+                });
+            }
+
+            let current = DirectoryNode::new(dir_entries);
+            match current {
+                Ok(current_node) => {
+                    tree.data
+                        .insert(hash_name, MerkleNode::Directory(current_node));
+                }
+                Err(e) => {
+                    println!("{}", e);
+                }
+            }
+        }
+        BIG => {
+            let chlidren: Vec<NodeHash> = Vec::new();
+            tree.data.insert(
+                hash_name,
+                MerkleNode::Big(crate::BigNode {
+                    children_hashes: chlidren,
+                }),
+            );
+        }
+        BIGDIRECTORY => {
+            let nb_entries = value_slice[1];
+            let mut dir_entries = Vec::new();
+            let mut offset = 1 as usize;
+            for i in 0..nb_entries {
+                offset = (offset as u8 + 64 * i) as usize;
+                let name = &recevied_datum[offset..offset + 32];
+                let mut hash = [0u8; 32];
+                hash.copy_from_slice(&recevied_datum[offset + 32..offset + 64]);
+                // envoyer un datum request
+                dir_entries.push(DirectoryEntry {
+                    filename: name.to_vec(),
+                    content_hash: hash,
+                });
+            }
+
+            let current = BigDirectoryNode::new(dir_entries);
+            match current {
+                Ok(current_node) => {
+                    tree.data
+                        .insert(hash_name, MerkleNode::BigDirectory(current_node));
+                }
+                Err(e) => {
+                    println!("{}", e);
+                }
+            }
+        }
+        _ => {}
+    }
+}

client-network/src/lib.rs

@@ -12,8 +12,10 @@ use crate::{
     cryptographic_signature::CryptographicSignature,
     message_handling::EventType,
     messages_channels::{MultipleSenders, start_receving_thread},
+    messages_structure::{ROOTREQUEST, construct_message},
+    peers_refresh::HandshakeHistory,
     registration::{
-        get_socket_address, parse_addresses, register_ip_addresses, register_with_the_server,
+        get_socket_address, parse_addresses, perform_handshake, register_with_the_server,
     },
     server_communication::{generate_id, get_peer_list},
 };
@@ -33,6 +35,7 @@ pub struct P2PSharedData {
     shared_messageslist: Arc<Mutex<HashMap<i32, EventType>>>,
     shared_senders: Arc<MultipleSenders>,
     server_name: Arc<Mutex<String>>,
+    handshake_peers: Arc<HandshakeHistory>,
 }
 
 impl P2PSharedData {
@@ -51,12 +54,14 @@ impl P2PSharedData {
         let senders = MultipleSenders::new(1, &shared_socket, cmd_tx);
         let shared_senders = Arc::new(senders);
         let server_name = Arc::new(Mutex::new("".to_string()));
+        let handhsake_peers = Arc::new(HandshakeHistory::new());
         Ok(P2PSharedData {
             shared_socket: shared_socket,
             shared_cryptopair: shared_cryptopair,
             shared_messageslist: shared_messageslist,
             shared_senders: shared_senders,
             server_name: server_name,
+            handshake_peers: handhsake_peers,
         })
     }
     pub fn socket(&self) -> Arc<UdpSocket> {
@@ -87,6 +92,9 @@ impl P2PSharedData {
     pub fn cryptopair_ref(&self) -> &CryptographicSignature {
         &*self.shared_cryptopair
     }
+    pub fn handshake_ref(&self) -> &HandshakeHistory {
+        &*self.handshake_peers
+    }
 
     pub fn messages_list_ref(&self) -> &Mutex<HashMap<i32, EventType>> {
         &*self.shared_messageslist
@@ -115,6 +123,8 @@ pub enum NetworkCommand {
     RequestChunk(String, String),
     Disconnect(),
     ResetServerPeer(),
+    Discover(String, String, String),
+    GetChildren(String, String),
     // ...
 }
 
@@ -128,7 +138,7 @@ pub enum NetworkEvent {
     PeerListUpdated(Vec<String>),
     FileTreeReceived(String, Vec<MerkleNode>), // peer_id, content
     DataReceived(String, MerkleNode),
-    FileTreeRootReceived(String, String),
+    FileTreeRootReceived(String, NodeHash),
     HandshakeFailed(),
     ServerHandshakeFailed(String),
     // ...
@@ -163,6 +173,8 @@ pub fn start_p2p_executor(
     // Use tokio to spawn the asynchronous networking logic
     tokio::task::spawn(async move {
         // P2P/Networking Setup goes here
+        let handshake_history = Arc::new(Mutex::new(HandshakeHistory::new()));
+        let handshake_clone = handshake_history.clone();
 
         println!("Network executor started.");
 
@@ -172,62 +184,13 @@ pub fn start_p2p_executor(
             if let Ok(cmd) = cmd_rx.try_recv() {
                 match cmd {
                     NetworkCommand::ServerHandshake(username, ip) => {
+                        println!("server handshake called");
                         if let Some(sd) = shared_data.as_ref() {
-                            println!("username:{}, ip:{}", username, ip);
+                            start_receving_thread(sd, event_tx.clone(), &handshake_clone);
-                            let server_addr_query = get_socket_address(username.clone(), ip);
-
-                            match server_addr_query.await {
-                                Ok(sockaddr_bytes) => {
-                                    match String::from_utf8(sockaddr_bytes.to_vec()) {
-                                        Ok(s) => {
-                                            let addresses = parse_addresses(&s);
-                                            if let Some(first) = addresses.first() {
-                                                sd.set_servername(username);
-                                                // first: &SocketAddr
-                                                start_receving_thread(
-                                                    sd,
-                                                    *first, // copie le SocketAddr (implémente Copy pour SocketAddr)
-                                                    event_tx.clone(), //
-                                                );
-                                                register_ip_addresses(
-                                                    sd.cryptopair_ref(),
-                                                    first.to_string(),
-                                                    sd.senders_ref(),
-                                                    sd.messages_list_ref(),
-                                                    generate_id(),
-                                                );
-
-                                                //let res = event_tx
-                                                //    .send(NetworkEvent::());
-                                            } else {
-                                                //let res = event_tx.send(NetworkEvent::Error());
-                                                let err_msg = format!(
-                                                    "no valid socket addresses found in: {}",
-                                                    s
-                                                )
-                                                .to_string();
                             let res =
-                                                    event_tx.send(NetworkEvent::Error(err_msg));
+                                perform_handshake(&sd, username, ip, event_tx.clone(), true).await;
-                                            }
+                        } else {
-                                        }
+                            println!("no shared data");
-                                        Err(e) => {
-                                            //let res = event_tx.send(NetworkEvent::Error());
-                                            let err_msg = format!(
-                                                "invalid UTF-8 in socket address bytes: {}",
-                                                e
-                                            )
-                                            .to_string();
-                                            let res = event_tx.send(NetworkEvent::Error(err_msg));
-                                        }
-                                    }
-                                }
-                                Err(e) => {
-                                    let err_msg =
-                                        format!("failed to retreive socket address: {}", e)
-                                            .to_string();
-                                    let res = event_tx.send(NetworkEvent::Error(err_msg));
-                                }
-                            }
                         }
                     }
                     NetworkCommand::ConnectPeer(addr) => {
@@ -240,6 +203,56 @@ pub fn start_p2p_executor(
                     NetworkCommand::RequestFileTree(_) => {
                         println!("[Network] RequestFileTree() called");
                     }
+                    NetworkCommand::Discover(username, hash, ip) => {
+                        // envoie un handshake au peer, puis un root request
+                        if let Some(sd) = shared_data.as_ref() {
+                            let res = {
+                                let m = handshake_clone.lock().unwrap();
+                                m.get_peer_info_username(username.clone()).cloned()
+                            };
+                            match res {
+                                Some(peerinfo) => {
+                                    // envoyer un root request
+                                    let rootrequest = construct_message(
+                                        ROOTREQUEST,
+                                        Vec::new(),
+                                        generate_id(),
+                                        sd.cryptopair_ref(),
+                                    );
+
+                                    match rootrequest {
+                                        None => {}
+                                        Some(resp_msg) => {
+                                            println!("msg_sent:{:?}", resp_msg);
+                                            sd.senders_ref().send_via(
+                                                0,
+                                                resp_msg,
+                                                peerinfo.ip.to_string(),
+                                                false,
+                                                sd.messages_list_ref(),
+                                            );
+                                        }
+                                    }
+                                }
+                                None => {
+                                    // envoyer un handshake
+                                    let res = perform_handshake(
+                                        &sd,
+                                        username,
+                                        ip,
+                                        event_tx.clone(),
+                                        false,
+                                    )
+                                    .await;
+                                }
+                            }
+                        } else {
+                            println!("no shared data");
+                        }
+                    }
+                    NetworkCommand::GetChildren(username, hash) => {
+                        // envoie un datum request au peer
+                    }
                     NetworkCommand::RequestDirectoryContent(_, _) => {
                         println!("[Network] RequestDirectoryContent() called");
                     }

client-network/src/message_handling.rs

@@ -1,11 +1,13 @@
 use crate::{
-    NetworkEvent,
+    NetworkEvent, NodeHash,
     cryptographic_signature::{
         CryptographicSignature, get_peer_key, sign_message, verify_signature,
     },
     messages_channels::MultipleSenders,
     messages_structure::construct_message,
+    peers_refresh::HandshakeHistory,
     registration,
+    server_communication::generate_id,
 };
 use std::{collections::HashMap, net::SocketAddr};
 use std::{
@@ -14,9 +16,7 @@ use std::{
 };
 
 pub enum EventType {
-    ServerHelloReply,
+    SendRootRequest,
-    PeerHelloReply,
-    PeerHello,
 }
 
 const ID: usize = 4;
@@ -42,11 +42,12 @@ pub fn handle_recevied_message(
     messages_list: &Arc<Mutex<HashMap<i32, EventType>>>,
     recevied_message: &Vec<u8>,
     crypto_pair: &CryptographicSignature,
-    socket_addr: &SocketAddr,
+    //socket_addr: &SocketAddr,
     senders: &MultipleSenders,
     server_name: &String,
     cmd_tx: crossbeam_channel::Sender<NetworkEvent>,
     ip: SocketAddr,
+    handhsake_history: &Arc<Mutex<HandshakeHistory>>,
 ) {
     if recevied_message.len() < 4 {
         return;
@@ -70,13 +71,27 @@ pub fn handle_recevied_message(
         }
     }
 
-    let resp = parse_message(recevied_message.to_vec(), id, crypto_pair, cmd_tx, ip);
+    let resp = parse_message(
+        recevied_message.to_vec(),
+        id,
+        crypto_pair,
+        cmd_tx,
+        ip,
+        messages_list,
+        handhsake_history,
+    );
 
     match resp {
         None => {}
         Some(resp_msg) => {
             println!("msg_sent:{:?}", resp_msg);
-            senders.send_via(0, resp_msg, ip.to_string(), is_resp_to_server_handshake);
+            senders.send_via(
+                0,
+                resp_msg,
+                ip.to_string(),
+                is_resp_to_server_handshake,
+                messages_list,
+            );
         }
     }
 
@@ -152,7 +167,10 @@ pub fn parse_message(
     crypto_pair: &CryptographicSignature,
     cmd_tx: crossbeam_channel::Sender<NetworkEvent>,
     ip: SocketAddr,
+    messages_list: &Arc<Mutex<HashMap<i32, EventType>>>,
+    handhsake_history_mutex: &Arc<Mutex<HandshakeHistory>>,
 ) -> Option<Vec<u8>> {
+    let mut handhsake_history = handhsake_history_mutex.lock().unwrap();
     let cmd_tx_clone = cmd_tx.clone();
 
     let id_bytes: [u8; 4] = received_message[0..ID]
@@ -166,20 +184,29 @@ pub fn parse_message(
         .expect("Taille incorrecte");
 
     let msg_length = u16::from_be_bytes(length_bytes) as usize;
-
     // verify signature
     match msgtype {
-        HELLO | HELLOREPLY | ROOTREPLY | NODATUM | NATTRAVERSALREQUEST | NATTRAVERSALREQUEST2 => {
+        HELLO | HELLOREPLY | NODATUM | NATTRAVERSALREQUEST | NATTRAVERSALREQUEST2 => {
             let ilength = u16::from_be_bytes(length_bytes);
             println!("name received length: {}", ilength);
             let received_name = &received_message[LENGTH + EXTENSIONS..LENGTH + ilength as usize];
             let received_username = String::from_utf8(received_name.to_vec());
             match received_username {
                 Ok(username) => {
-                    let peer_pubkey = tokio::runtime::Runtime::new()
+                    let peer_pubkey =
+                        match handhsake_history.get_peer_info_username(username.clone()) {
+                            Some(peerinfo) => peerinfo.pubkey,
+                            _ => tokio::runtime::Runtime::new()
                                 .unwrap()
                                 .block_on(get_peer_key(&username))
-                        .expect("failed to retrieve public key");
+                                .expect("failed to retrieve public key"),
+                        };
+                    match msgtype {
+                        HELLOREPLY => {
+                            handhsake_history.add_new_handshake(peer_pubkey, "".to_string(), ip);
+                        }
+                        _ => {}
+                    }
                     let signature: [u8; SIGNATURE] = received_message
                         [LENGTH + msg_length..LENGTH + msg_length + SIGNATURE]
                         .try_into()
@@ -198,6 +225,22 @@ pub fn parse_message(
                 }
             }
         }
+        ROOTREPLY => {
+            let ilength = u16::from_be_bytes(length_bytes);
+            println!("name received length: {}", ilength);
+            if let Some(peerinfo) = handhsake_history.get_peer_info_ip(ip.to_string()) {
+                if !verify_signature(peerinfo.pubkey, &received_message) {
+                    println!(
+                        "incorrect signature from given peer: {}, ignoring message of type {} with id {}",
+                        &peerinfo.username, received_message[ID], id
+                    );
+                    return None;
+                } else {
+                    println!("signature verified");
+                }
+            }
+        }
+
         _ => {}
     }
 
@@ -248,7 +291,40 @@ pub fn parse_message(
         //
         //
         // ajoute a la liste des peers handshake
-        HELLOREPLY => {}
+        HELLOREPLY => {
+            // ajoute l'username a la liste des peers handshake
+            let received_length = u16::from_be_bytes(
+                received_message[TYPE..LENGTH]
+                    .try_into()
+                    .expect("incorrect size"),
+            );
+            let received_username =
+                &received_message[LENGTH + EXTENSIONS..LENGTH + received_length as usize];
+            handhsake_history.update_peer_info(
+                ip.to_string(),
+                String::from_utf8(received_username.to_vec()).expect("invalid conversion"),
+            );
+            // verifie s'il faut renvoyer un root request
+            let guard = messages_list.lock().expect("Échec du verrouillage");
+            let res = guard.get(&id);
+            match res {
+                Some(ev) => {
+                    match ev {
+                        EventType::SendRootRequest => {
+                            // envoyer la root request
+                            let rootrequest = construct_message(
+                                ROOTREQUEST,
+                                Vec::new(),
+                                generate_id(),
+                                crypto_pair,
+                            );
+                            return rootrequest;
+                        }
+                    }
+                }
+                None => {}
+            }
+        }
         //
         // ROOTREQUEST
         //
@@ -256,7 +332,26 @@ pub fn parse_message(
         //
         // ROOTREPLY
         //
-        // envoie un datum request
+        ROOTREPLY => {
+            // recuperer le pseudo du peers ayant repondu
+            let peers_exist = handhsake_history.get_peer_info_ip(ip.to_string());
+            match peers_exist {
+                Some(peerinfo) => {
+                    // envoyer le hash a la gui
+                    let received_hash: NodeHash = received_message[LENGTH..(32 + LENGTH)]
+                        .try_into()
+                        .expect("incorrect size");
+                    let res = cmd_tx_clone.send(NetworkEvent::FileTreeRootReceived(
+                        peerinfo.username.clone(),
+                        received_hash,
+                    ));
+                    println!("file tree sent")
+                }
+                None => {
+                    eprintln!("no peers found");
+                }
+            }
+        }
         //
         // DATUMREQUEST
         //
@@ -328,6 +423,6 @@ pub fn parse_message(
         //
         // envoie OK à S puis envoie un ping à S
         _ => return None,
-    }
+    };
     constructed_message
 }

client-network/src/messages_channels.rs

@@ -2,6 +2,7 @@ use crate::P2PSharedData;
 use crate::cryptographic_signature::CryptographicSignature;
 use crate::message_handling::EventType;
 use crate::message_handling::handle_recevied_message;
+use crate::peers_refresh::HandshakeHistory;
 use std::collections::HashMap;
 use std::net::SocketAddr;
 use std::net::UdpSocket;
@@ -21,9 +22,9 @@ pub struct MultipleSenders {
 }
 
 pub struct Message {
-    payload: Vec<u8>,
+    pub payload: Vec<u8>,
-    address: String,
+    pub address: String,
-    is_resp_to_server_handshake: bool,
+    pub is_resp_to_server_handshake: bool,
 }
 
 struct RetryMessage {
@@ -205,18 +206,25 @@ impl MultipleSenders {
         data: Vec<u8>,
         remote_addr: String,
         is_resp_to_server_handshake: bool,
+        messages_list: &Mutex<HashMap<i32, EventType>>,
     ) {
         println!(
             "is_resp_to_server_handshake {}",
             is_resp_to_server_handshake
         );
-        if let Some(sender) = self.senders.get(channel_idx) {
+        let msg_to_send = Message {
-            let _ = sender.send(Message {
+            payload: data.clone(),
-                payload: data,
             address: remote_addr,
             is_resp_to_server_handshake,
-            });
+        };
+        if let Some(sender) = self.senders.get(channel_idx) {
+            let _ = sender.send(msg_to_send);
         }
+        if !is_resp_to_server_handshake {
+            let mut guard = messages_list.lock().unwrap();
+            let message_id: [u8; 4] = data[0..4].try_into().expect("size error");
+            let id = i32::from_be_bytes(message_id);
+            guard.insert(id, EventType::SendRootRequest);
         }
     }
 
@@ -252,17 +260,20 @@ impl MultipleSenders {
             }
         });
     }*/
+}
 
 pub fn start_receving_thread(
     shared_data: &P2PSharedData,
-    socket_addr: SocketAddr,
     cmd_tx: crossbeam_channel::Sender<NetworkEvent>,
+    handshake_history: &Arc<Mutex<HandshakeHistory>>,
 ) {
     let sock_clone = shared_data.socket();
     let cryptopair_clone = shared_data.cryptopair();
     let senders_clone = shared_data.senders();
     let messages_clone = shared_data.messages_list();
     let servername_clone = shared_data.servername();
+
+    let handshake_clone = handshake_history.clone();
     thread::spawn(move || {
         let mut buf = [0u8; 1024];
         loop {
@@ -275,11 +286,11 @@ pub fn start_receving_thread(
                         &messages_clone,
                         &received_data,
                         &cryptopair_clone,
-                        &socket_addr,
                         &senders_clone,
                         &servername_clone,
                         cmd_tx.clone(),
                         src,
+                        &handshake_clone,
                     );
                 }
                 Err(e) => eprintln!("Erreur de réception: {}", e),

client-network/src/messages_structure.rs

@@ -14,7 +14,7 @@ const OK: u8 = 128;
 const ERROR: u8 = 129;
 const HELLO: u8 = 1;
 const HELLOREPLY: u8 = 130;
-const ROOTREQUEST: u8 = 2;
+pub const ROOTREQUEST: u8 = 2;
 const ROOTREPLY: u8 = 131;
 const DATUMREQUEST: u8 = 3;
 const NODATUM: u8 = 133;
@@ -46,11 +46,11 @@ pub fn construct_message(
             let signature = sign_message(crypto_pair, &message);
             return Some(signature);
         }
-        PING | OK => {
+        PING | OK | ROOTREQUEST => {
             message.extend_from_slice(&0u16.to_be_bytes());
             return Some(message);
         }
-        ERROR | ROOTREQUEST | DATUMREQUEST => {
+        ERROR | DATUMREQUEST => {
             message.extend_from_slice(&payload.len().to_be_bytes());
             message.extend_from_slice(&payload);
             return Some(message);

client-network/src/peers_refresh.rs

@@ -3,7 +3,7 @@
 
 use std::{
     collections::{HashMap, VecDeque},
-    net::{AddrParseError, SocketAddr},
+    net::{AddrParseError, Ipv4Addr, SocketAddr},
     ops::Add,
     process::Command,
     sync::{Arc, Mutex},
@@ -11,54 +11,134 @@ use std::{
     time::{self, Duration, SystemTime},
 };
 
+use crate::NetworkEvent;
+use crate::{
+    P2PSharedData, construct_message, generate_id, messages_structure,
+    registration::perform_handshake,
+};
+use crossbeam_channel::{Receiver, Sender};
+use p256::ecdsa::VerifyingKey;
+
+#[derive(Debug, Clone)]
 pub struct PeerInfo {
-    username: String,
+    pub username: String,
-    ip: SocketAddr,
+    pub pubkey: VerifyingKey,
+    pub ip: SocketAddr,
 }
 
 pub struct HandshakeHistory {
-    time_k_ip_v: HashMap<u64, u64>,
+    //time_k_ip_v: HashMap<u64, u64>,
-    ip_k_peerinfo_v: HashMap<u64, PeerInfo>,
+    username_k_peerinfo_v: HashMap<String, PeerInfo>,
+    ip_k_peerinfo_v: HashMap<String, PeerInfo>,
 }
 
 impl HandshakeHistory {
     pub fn new() -> HandshakeHistory {
         HandshakeHistory {
-            time_k_ip_v: HashMap::new(),
+            //time_k_ip_v: HashMap::new(),
+            //ip_k_peerinfo_v: HashMap::new(),
+            username_k_peerinfo_v: HashMap::new(),
             ip_k_peerinfo_v: HashMap::new(),
         }
     }
 
-    pub fn update_handshake(&mut self) {
+    /*pub fn update_handshake(&self) {
+        let hashmap_shared = Arc::new(self.username_k_peerinfo_v);
         thread::spawn(move || {
-            let mut times_to_check = VecDeque::new();
+            let selfhashmap = hashmap_shared.clone();
-            let current_time: u64 = SystemTime::now()
-                .duration_since(time::UNIX_EPOCH)
-                .expect("system time before UNIX EPOCH")
-                .add(Duration::from_secs(10))
-                .as_secs();
-            // adds 10 seconds in the queue every 10 seconds
             loop {
-                let mut child = Command::new("sleep").arg("9").spawn().unwrap();
+                for peer in selfhashmap.keys() {
-                let _result = child.wait().unwrap();
+                    let peer_ip = selfhashmap.get(peer);
-                for n in 0..9 {
+                    // send ping
-                    // push 9 successive seconds
-                    times_to_check.push_back(current_time + n);
-                    // gestion d'erreur si verrou mort
                 }
+                let mut child = Command::new("sleep").arg("10").spawn().unwrap();
+                let _result = child.wait().unwrap();
+            }
+        });
+    }*/
+
+    pub fn get_peer_info_username(&self, username: String) -> Option<&PeerInfo> {
+        self.username_k_peerinfo_v.get(&username).clone()
+    }
+
+    pub fn get_peer_info_ip(&self, ip: String) -> Option<&PeerInfo> {
+        self.ip_k_peerinfo_v.get(&ip).clone()
+    }
+
+    pub fn update_handshake(&self) {
+        // clone the map so we own it (cheap if PeerInfo is Clone)
+        let map_clone: Arc<HashMap<String, PeerInfo>> =
+            Arc::new(self.username_k_peerinfo_v.clone());
+        //let map_ip_clone: Arc<HashMap<String, PeerInfo>> = Arc::new(self.ip_k_peerinfo_v.clone());
+        let map_for_thread = Arc::clone(&map_clone);
+        thread::spawn(move || {
+            loop {
+                // Arc<HashMap<..>> derefs to &HashMap so these reads work
+                for (peer, peerinfo) in map_for_thread.iter() {
+                    // send ping to peerinfo
+                }
+                thread::sleep(Duration::from_secs(10));
             }
         });
     }
 
-    pub fn add_new_handshake(&mut self, hash: u64, username: String, ip: SocketAddr) {
+    pub fn update_peer_info(&mut self, ip: String, username: String) {
-        let current_time: u64 = SystemTime::now()
+        let peerinfo = self.get_peer_info_ip(ip.clone());
-            .duration_since(time::UNIX_EPOCH)
+        match peerinfo {
-            .expect("system time before UNIX EPOCH")
+            Some(peer_info) => match ip.parse::<SocketAddr>() {
-            .as_secs();
+                Ok(addr) => {
-        println!("time:{}", current_time);
+                    let new_peer_info = PeerInfo {
-        /*self.time_k_hash_v.insert(current_time, hash);
+                        username: username.clone(),
-        self.hash_k_peerinfo_v
+                        pubkey: peer_info.pubkey,
-            .insert(hash, PeerInfo { username, ip });*/
+                        ip: addr,
+                    };
+                    self.ip_k_peerinfo_v.insert(ip, new_peer_info.clone());
+                    self.username_k_peerinfo_v.insert(username, new_peer_info);
+                }
+                Err(e) => eprintln!("parse error: {}", e),
+            },
+            None => {
+                eprintln!("no peer info found in hashmap")
+            }
+        }
+    }
+
+    pub fn add_new_handshake(&mut self, hash: VerifyingKey, username: String, ip: SocketAddr) {
+        let peerinfo = PeerInfo {
+            username: username.clone(),
+            pubkey: hash,
+            ip,
+        };
+        self.username_k_peerinfo_v
+            .insert(username, peerinfo.clone());
+        self.ip_k_peerinfo_v
+            .insert(ip.to_string(), peerinfo.clone());
+    }
+}
+
+pub fn perform_discover(
+    username: String,
+    hash: String,
+    sd: &P2PSharedData,
+    server_ip: String,
+    event_tx: Sender<NetworkEvent>,
+) {
+    // first, sends handshake
+    if hash == "root" {
+        perform_handshake(sd, username, server_ip, event_tx, false);
+        /*if let Some(data) = construct_message(
+            messages_structure::ROOTREQUEST,
+            Vec::new(),
+            generate_id(),
+            sd.cryptopair_ref(),
+        ) {
+            if let Some(peerinfo) = sd.handshake_ref() {
+                sd.senders_ref()
+                    .send_via(0, data, peerinfo.ip.to_string(), false);
+            }
+        }*/
+    } else {
+        // envoyer un datum request
     }
 }
 
@@ -68,10 +148,7 @@ mod tests {
 
     use super::*;
 
-    ///
+    /*#[test]
-    /// creates a cryptographic signature
-    ///
-    #[test]
     fn creating_cryptographic_signature() {
         let mut hh = HandshakeHistory::new();
         hh.add_new_handshake(
@@ -79,5 +156,5 @@ mod tests {
             "putain".to_string(),
             SocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 1),
         );
-    }
+    }*/
 }

client-network/src/registration.rs

@@ -1,10 +1,14 @@
 use bytes::Bytes;
 use getrandom::Error;
 
+use crate::NetworkEvent;
+use crate::P2PSharedData;
 use crate::cryptographic_signature::{CryptographicSignature, formatPubKey, sign_message};
 use crate::message_handling::EventType;
 use crate::messages_channels::{Message, MultipleSenders};
 use crate::messages_structure::construct_message;
+use crate::server_communication::generate_id;
+use crossbeam_channel::{Receiver, Sender};
 use std::collections::HashMap;
 use std::net::SocketAddr;
 use std::net::UdpSocket;
@@ -66,23 +70,67 @@ pub fn parse_addresses(input: &String) -> Vec<SocketAddr> {
 ///
 /// registers the IP addresses by sending a Hello request to the server.
 ///
-pub fn register_ip_addresses(
+pub async fn perform_handshake(
-    crypto_pair: &CryptographicSignature,
+    sd: &P2PSharedData,
-    server_uri: String,
+    username: String,
-    senders: &MultipleSenders,
+    ip: String,
-    messages_list: &Mutex<HashMap<i32, EventType>>,
+    event_tx: Sender<NetworkEvent>,
-    id: i32,
+    is_server_handshake: bool,
 ) {
+    println!("username: {}, ip: {}", username.clone(), ip.clone());
+    let crypto_pair = sd.cryptopair_ref();
+    let senders = sd.senders_ref();
+    let messages_list = sd.messages_list_ref();
+    let id = generate_id();
+    let server_addr_query = get_socket_address(username.clone(), ip.clone());
+    match server_addr_query.await {
+        Ok(sockaddr_bytes) => {
+            match String::from_utf8(sockaddr_bytes.to_vec()) {
+                Ok(s) => {
+                    let addresses = parse_addresses(&s);
+                    if let Some(first) = addresses.first() {
+                        sd.set_servername(username);
+                        // first: &SocketAddr
                         let mut payload = Vec::new();
                         payload.extend_from_slice(&0u32.to_be_bytes());
                         payload.extend_from_slice(&crypto_pair.username.clone().as_bytes());
                         let hello_handshake = construct_message(1, payload, id, crypto_pair);
                         match hello_handshake {
                             Some(handshake_message) => {
-            senders.send_via(0, handshake_message, server_uri, false);
+                                senders.send_via(
+                                    0,
+                                    handshake_message,
+                                    first.to_string(),
+                                    is_server_handshake,
+                                    messages_list,
+                                );
                             }
                             None => {}
                         }
+
+                        //let res = event_tx
+                        //    .send(NetworkEvent::());
+                    } else {
+                        //let res = event_tx.send(NetworkEvent::Error());
+                        let err_msg =
+                            format!("no valid socket addresses found in: {}", s).to_string();
+                        let res = event_tx.send(NetworkEvent::Error(err_msg));
+                    }
+                }
+                Err(e) => {
+                    //let res = event_tx.send(NetworkEvent::Error());
+                    let err_msg =
+                        format!("invalid UTF-8 in socket address bytes: {}", e).to_string();
+                    let res = event_tx.send(NetworkEvent::Error(err_msg));
+                }
+            }
+        }
+        Err(e) => {
+            let err_msg = format!("failed to retreive socket address: {}", e).to_string();
+            let res = event_tx.send(NetworkEvent::Error(err_msg));
+        }
+    }
+
     /*let mut list = messages_list.lock().expect("Failed to lock messages_list");
     match list.get(&id) {
         Some(_) => {