Encrypted connection
This commit is contained in:
arkpar
parent
54a93d58a8
commit
10a43c1fed
@ -48,10 +48,10 @@ impl From<::std::io::Error> for CryptoError {
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/// fn main() {
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/// let pair = KeyPair::create().unwrap();
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/// let message = H256::random();
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/// let signature = sign(pair.secret(), &message).unwrap();
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/// let signature = ec::sign(pair.secret(), &message).unwrap();
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///
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/// assert!(verify(pair.public(), &signature, &message).unwrap());
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/// assert_eq!(recover(&signature, &message).unwrap(), *pair.public());
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/// assert!(ec::verify(pair.public(), &signature, &message).unwrap());
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/// assert_eq!(ec::recover(&signature, &message).unwrap(), *pair.public());
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/// }
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/// ```
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pub struct KeyPair {
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@ -200,6 +200,49 @@ pub mod ecies {
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Ok(msg)
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}
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pub fn decrypt(secret: &Secret, encrypted: &[u8]) -> Result<Bytes, CryptoError> {
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use ::rcrypto::digest::Digest;
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use ::rcrypto::sha2::Sha256;
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use ::rcrypto::hmac::Hmac;
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use ::rcrypto::mac::Mac;
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let meta_len = encrypted.len() - (1 + 64 + 16 + 32);
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if encrypted.len() < meta_len || encrypted[0] < 2 || encrypted[0] > 4 {
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return Err(CryptoError::InvalidMessage); //invalid message: publickey
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}
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let e = &encrypted[1..];
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let p = Public::from_slice(&e[0..64]);
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let z = try!(ecdh::agree(secret, &p));
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let mut key = [0u8; 32];
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kdf(&z, &[0u8; 0], &mut key);
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let ekey = &key[0..16];
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let mkey_material = &key[16..32];
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let mut hasher = Sha256::new();
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let mut mkey = [0u8; 32];
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hasher.input(mkey_material);
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hasher.result(&mut mkey);
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let clen = encrypted.len() - meta_len;
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let cypher_with_iv = &e[64..(64+16+clen)];
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let cypher_iv = &cypher_with_iv[0..16];
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let cypher_no_iv = &cypher_with_iv[16..];
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let msg_mac = &e[(64+16+clen)..];
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// Verify tag
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let mut hmac = Hmac::new(Sha256::new(), &mkey);
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hmac.input(cypher_iv);
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let mut mac = H256::new();
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hmac.raw_result(&mut mac);
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if &mac[..] != msg_mac {
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return Err(CryptoError::InvalidMessage);
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}
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let mut msg = vec![0u8; clen];
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aes::decrypt(ekey, &H128::new(), cypher_no_iv, &mut msg[..]);
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Ok(msg)
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}
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fn kdf(secret: &Secret, s1: &[u8], dest: &mut [u8]) {
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use ::rcrypto::digest::Digest;
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use ::rcrypto::sha2::Sha256;
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@ -252,10 +295,10 @@ mod tests {
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fn test_signature() {
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let pair = KeyPair::create().unwrap();
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let message = H256::random();
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let signature = sign(pair.secret(), &message).unwrap();
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let signature = ec::sign(pair.secret(), &message).unwrap();
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assert!(verify(pair.public(), &signature, &message).unwrap());
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assert_eq!(recover(&signature, &message).unwrap(), *pair.public());
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assert!(ec::verify(pair.public(), &signature, &message).unwrap());
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assert_eq!(ec::recover(&signature, &message).unwrap(), *pair.public());
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}
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#[test]
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@ -1,9 +1,22 @@
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use std::io::{self, Cursor, Read};
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use mio::*;
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#![allow(dead_code)] //TODO: remove this after everything is done
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use mio::{Token, EventSet, EventLoop, Timeout, PollOpt, TryRead, TryWrite};
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use mio::tcp::*;
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use hash::*;
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use sha3::*;
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use bytes::*;
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use network::host::Host;
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use rlp::*;
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use std::io::{self, Cursor, Read};
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use network::host::{Host};
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use network::Error;
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use network::handshake::Handshake;
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use crypto;
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use rcrypto::blockmodes::*;
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use rcrypto::aessafe::*;
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use rcrypto::symmetriccipher::*;
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use rcrypto::buffer::*;
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use tiny_keccak::Keccak;
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const ENCRYPTED_HEADER_LEN: usize = 32;
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pub struct Connection {
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pub token: Token,
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@ -19,6 +32,189 @@ pub enum WriteStatus {
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Complete
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}
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enum EncryptedConnectionState {
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Header,
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Payload,
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}
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pub struct EncryptedConnection {
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connection: Connection,
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encoder: CtrMode<AesSafe128Encryptor>,
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decoder: CtrMode<AesSafe128Encryptor>,
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mac_encoder: EcbEncryptor<AesSafe128Encryptor, EncPadding<NoPadding>>,
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egress_mac: Keccak,
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ingress_mac: Keccak,
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read_state: EncryptedConnectionState,
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idle_timeout: Option<Timeout>,
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protocol_id: u16,
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payload_len: u32,
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}
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impl EncryptedConnection {
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pub fn new(handshake: Handshake) -> Result<EncryptedConnection, Error> {
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let shared = try!(crypto::ecdh::agree(handshake.ecdhe.secret(), &handshake.remote_public));
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let mut nonce_material = H512::new();
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if handshake.originated {
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handshake.remote_nonce.copy_to(&mut nonce_material[0..32]);
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handshake.nonce.copy_to(&mut nonce_material[32..64]);
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}
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else {
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handshake.nonce.copy_to(&mut nonce_material[0..32]);
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handshake.remote_nonce.copy_to(&mut nonce_material[32..64]);
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}
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let mut key_material = H512::new();
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shared.copy_to(&mut key_material[0..32]);
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nonce_material.sha3_into(&mut key_material[32..64]);
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key_material.sha3().copy_to(&mut key_material[32..64]);
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let iv = vec![0u8; 16];
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let encoder = CtrMode::new(AesSafe128Encryptor::new(&key_material[32..64]), iv);
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let iv = vec![0u8; 16];
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let decoder = CtrMode::new(AesSafe128Encryptor::new(&key_material[32..64]), iv);
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key_material.sha3().copy_to(&mut key_material[32..64]);
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let mac_encoder = EcbEncryptor::new(AesSafe128Encryptor::new(&key_material[32..64]), NoPadding);
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let mut egress_mac = Keccak::new_keccak256();
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let mut mac_material = &H256::from_slice(&key_material[32..64]) ^ &handshake.remote_nonce;
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egress_mac.update(&mac_material);
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egress_mac.update(if handshake.originated { &handshake.auth_cipher } else { &handshake.ack_cipher });
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let mut ingress_mac = Keccak::new_keccak256();
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mac_material = &(&mac_material ^ &handshake.remote_nonce) ^ &handshake.nonce;
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ingress_mac.update(&mac_material);
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ingress_mac.update(if handshake.originated { &handshake.ack_cipher } else { &handshake.auth_cipher });
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Ok(EncryptedConnection {
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connection: handshake.connection,
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encoder: encoder,
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decoder: decoder,
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mac_encoder: mac_encoder,
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egress_mac: egress_mac,
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ingress_mac: ingress_mac,
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read_state: EncryptedConnectionState::Header,
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idle_timeout: None,
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protocol_id: 0,
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payload_len: 0
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})
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}
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pub fn write_packet(&mut self, payload: &[u8]) -> Result<(), Error> {
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let mut header = RlpStream::new();
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let len = payload.len() as usize;
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header.append_raw(&[(len >> 16) as u8, (len >> 8) as u8, len as u8], 1);
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header.append_raw(&[0xc2u8, 0x80u8, 0x80u8], 1);
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//TODO: ger rid of vectors here
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let mut header = header.out();
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let padding = (16 - (payload.len() % 16)) % 16;
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header.resize(16, 0u8);
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let mut packet = vec![0u8; (32 + payload.len() + padding + 16)];
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self.encoder.encrypt(&mut RefReadBuffer::new(&header), &mut RefWriteBuffer::new(&mut packet), false).expect("Invalid length or padding");
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self.egress_mac.update(&packet[0..16]);
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self.egress_mac.clone().finalize(&mut packet[16..32]);
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self.encoder.encrypt(&mut RefReadBuffer::new(&payload), &mut RefWriteBuffer::new(&mut packet[32..(32 + len)]), padding == 0).expect("Invalid length or padding");
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if padding != 0 {
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let pad = [08; 16];
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self.encoder.encrypt(&mut RefReadBuffer::new(&pad[0..padding]), &mut RefWriteBuffer::new(&mut packet[(32 + len)..(32 + len + padding)]), true).expect("Invalid length or padding");
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}
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self.egress_mac.update(&packet[32..(32 + len + padding)]);
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self.egress_mac.clone().finalize(&mut packet[(32 + len + padding)..]);
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self.connection.send(&packet);
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Ok(())
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}
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fn read_header(&mut self, header: &[u8]) -> Result<(), Error> {
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if header.len() != ENCRYPTED_HEADER_LEN {
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return Err(Error::Auth);
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}
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self.ingress_mac.update(header);
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let mac = &header[16..];
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let mut expected = H128::new();
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self.ingress_mac.clone().finalize(&mut expected);
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if mac != &expected[..] {
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return Err(Error::Auth);
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}
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let mut header_dec = H128::new();
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self.decoder.decrypt(&mut RefReadBuffer::new(&header[0..16]), &mut RefWriteBuffer::new(&mut header_dec), false).expect("Invalid length or padding");
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let length = ((header[0] as u32) << 8 + header[1] as u32) << 8 + header[2] as u32;
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let header_rlp = UntrustedRlp::new(&header[3..]);
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let protocol_id = try!(u16::decode_untrusted(&try!(header_rlp.at(0))));
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self.payload_len = length;
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self.protocol_id = protocol_id;
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self.read_state = EncryptedConnectionState::Payload;
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let padding = (16 - (length % 16)) % 16;
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let full_length = length + padding + 16;
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self.connection.expect(full_length as usize);
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Ok(())
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}
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fn read_payload(&mut self, payload: &[u8]) -> Result<Bytes, Error> {
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let padding = (16 - (self.payload_len % 16)) % 16;
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let full_length = (self.payload_len + padding + 16) as usize;
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if payload.len() != full_length {
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return Err(Error::Auth);
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}
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self.ingress_mac.update(&payload[0..payload.len() - 16]);
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let mac = &payload[(payload.len() - 16)..];
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let mut expected = H128::new();
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self.ingress_mac.clone().finalize(&mut expected);
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if mac != &expected[..] {
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return Err(Error::Auth);
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}
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let mut packet = vec![0u8; self.payload_len as usize];
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self.decoder.decrypt(&mut RefReadBuffer::new(&payload[0..(full_length - 16)]), &mut RefWriteBuffer::new(&mut packet), false).expect("Invalid length or padding");
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packet.resize(self.payload_len as usize, 0u8);
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Ok(packet)
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}
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pub fn readable(&mut self, event_loop: &mut EventLoop<Host>) -> Result<Option<Bytes>, Error> {
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self.idle_timeout.map(|t| event_loop.clear_timeout(t));
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try!(self.connection.reregister(event_loop));
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match self.read_state {
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EncryptedConnectionState::Header => {
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match try!(self.connection.readable()) {
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Some(data) => {
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try!(self.read_header(&data));
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},
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None => {}
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};
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Ok(None)
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},
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EncryptedConnectionState::Payload => {
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match try!(self.connection.readable()) {
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Some(data) => {
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self.read_state = EncryptedConnectionState::Header;
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self.connection.expect(ENCRYPTED_HEADER_LEN);
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Ok(Some(try!(self.read_payload(&data))))
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},
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None => Ok(None)
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}
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}
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}
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}
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pub fn writable(&mut self, event_loop: &mut EventLoop<Host>) -> Result<(), Error> {
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self.idle_timeout.map(|t| event_loop.clear_timeout(t));
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try!(self.connection.writable());
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try!(self.connection.reregister(event_loop));
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Ok(())
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}
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pub fn register(&mut self, event_loop: &mut EventLoop<Host>) -> Result<(), Error> {
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self.connection.expect(ENCRYPTED_HEADER_LEN);
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self.idle_timeout.map(|t| event_loop.clear_timeout(t));
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self.idle_timeout = event_loop.timeout_ms(self.connection.token, 1800).ok();
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try!(self.connection.register(event_loop));
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Ok(())
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}
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}
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impl Connection {
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pub fn new(token: Token, socket: TcpStream) -> Connection {
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Connection {
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@ -35,11 +231,12 @@ impl Connection {
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if self.rec_size != self.rec_buf.len() {
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warn!(target:"net", "Unexpected connection read start");
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}
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unsafe { self.rec_buf.set_len(size) }
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unsafe { self.rec_buf.set_len(0) }
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self.rec_size = size;
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}
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pub fn readable(&mut self) -> io::Result<Option<&[u8]>> {
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//TODO: return a slice
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pub fn readable(&mut self) -> io::Result<Option<Bytes>> {
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if self.rec_size == 0 || self.rec_buf.len() >= self.rec_size {
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warn!(target:"net", "Unexpected connection read");
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}
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@ -47,7 +244,10 @@ impl Connection {
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// resolve "multiple applicable items in scope [E0034]" error
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let sock_ref = <TcpStream as Read>::by_ref(&mut self.socket);
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match sock_ref.take(max as u64).try_read_buf(&mut self.rec_buf) {
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Ok(Some(_)) if self.rec_buf.len() == self.rec_size => Ok(Some(&self.rec_buf[0..self.rec_size])),
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Ok(Some(_)) if self.rec_buf.len() == self.rec_size => {
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self.rec_size = 0;
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Ok(Some(::std::mem::replace(&mut self.rec_buf, Bytes::new())))
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},
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Ok(_) => Ok(None),
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Err(e) => Err(e),
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}
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@ -107,3 +307,4 @@ impl Connection {
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}
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}
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@ -1,6 +1,7 @@
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use mio::*;
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use mio::tcp::*;
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use hash::*;
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use bytes::Bytes;
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use crypto::*;
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use crypto;
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use network::connection::{Connection, WriteStatus};
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@ -14,8 +15,6 @@ enum HandshakeState {
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WritingAuth,
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ReadingAck,
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WritingAck,
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WritingHello,
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ReadingHello,
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StartSession,
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}
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@ -23,34 +22,46 @@ pub struct Handshake {
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pub id: NodeId,
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pub connection: Connection,
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state: HandshakeState,
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pub originated: bool,
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idle_timeout: Option<Timeout>,
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ecdhe: KeyPair,
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nonce: H256,
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remote_public: Public,
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remote_nonce: H256
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pub ecdhe: KeyPair,
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pub nonce: H256,
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pub remote_public: Public,
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pub remote_nonce: H256,
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pub auth_cipher: Bytes,
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pub ack_cipher: Bytes
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}
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const AUTH_PACKET_SIZE:usize = 307;
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const ACK_PACKET_SIZE:usize = 210;
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impl Handshake {
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pub fn new(token: Token, id: &NodeId, socket: TcpStream, nonce: &H256) -> Result<Handshake, Error> {
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Ok(Handshake {
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id: id.clone(),
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connection: Connection::new(token, socket),
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originated: false,
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state: HandshakeState::New,
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idle_timeout: None,
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ecdhe: try!(KeyPair::create()),
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nonce: nonce.clone(),
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remote_public: Public::new(),
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remote_nonce: H256::new()
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remote_nonce: H256::new(),
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auth_cipher: Bytes::new(),
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ack_cipher: Bytes::new(),
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})
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}
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pub fn start(&mut self, host: &HostInfo, originated: bool) {
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pub fn start(&mut self, host: &HostInfo, originated: bool) -> Result<(), Error> {
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self.originated = originated;
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if originated {
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self.write_auth(host);
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try!(self.write_auth(host));
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}
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else {
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self.read_auth();
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self.state = HandshakeState::ReadingAuth;
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self.connection.expect(AUTH_PACKET_SIZE);
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};
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Ok(())
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}
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pub fn done(&self) -> bool {
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@ -58,88 +69,138 @@ impl Handshake {
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}
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pub fn readable(&mut self, event_loop: &mut EventLoop<Host>, host: &HostInfo) -> Result<(), Error> {
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self.idle_timeout.map(|t| event_loop.clear_timeout(t));
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Ok(())
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}
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pub fn writable(&mut self, event_loop: &mut EventLoop<Host>, host: &HostInfo) -> Result<(), Error> {
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self.idle_timeout.map(|t| event_loop.clear_timeout(t));
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match self.state {
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HandshakeState::WritingAuth => {
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match (try!(self.connection.writable())) {
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WriteStatus::Complete => { try!(self.read_ack()); },
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_ => {}
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HandshakeState::ReadingAuth => {
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match try!(self.connection.readable()) {
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Some(data) => {
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try!(self.read_auth(host, &data));
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try!(self.write_ack());
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},
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None => {}
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};
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try!(self.connection.reregister(event_loop));
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},
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HandshakeState::WritingAck => {
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match (try!(self.connection.writable())) {
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WriteStatus::Complete => { try!(self.read_hello()); },
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_ => {}
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};
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try!(self.connection.reregister(event_loop));
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},
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HandshakeState::WritingHello => {
|
||||
match (try!(self.connection.writable())) {
|
||||
WriteStatus::Complete => { self.state = HandshakeState::StartSession; },
|
||||
_ => { try!(self.connection.reregister(event_loop)); }
|
||||
HandshakeState::ReadingAck => {
|
||||
match try!(self.connection.readable()) {
|
||||
Some(data) => {
|
||||
try!(self.read_ack(host, &data));
|
||||
self.state = HandshakeState::StartSession;
|
||||
},
|
||||
None => {}
|
||||
};
|
||||
},
|
||||
_ => { panic!("Unexpected state") }
|
||||
}
|
||||
try!(self.connection.reregister(event_loop));
|
||||
Ok(())
|
||||
}
|
||||
|
||||
pub fn writable(&mut self, event_loop: &mut EventLoop<Host>, _host: &HostInfo) -> Result<(), Error> {
|
||||
self.idle_timeout.map(|t| event_loop.clear_timeout(t));
|
||||
match self.state {
|
||||
HandshakeState::WritingAuth => {
|
||||
match try!(self.connection.writable()) {
|
||||
WriteStatus::Complete => {
|
||||
self.connection.expect(ACK_PACKET_SIZE);
|
||||
self.state = HandshakeState::ReadingAck;
|
||||
},
|
||||
_ => {}
|
||||
};
|
||||
},
|
||||
HandshakeState::WritingAck => {
|
||||
match try!(self.connection.writable()) {
|
||||
WriteStatus::Complete => {
|
||||
self.connection.expect(32);
|
||||
self.state = HandshakeState::StartSession;
|
||||
},
|
||||
_ => {}
|
||||
};
|
||||
},
|
||||
_ => { panic!("Unexpected state") }
|
||||
}
|
||||
try!(self.connection.reregister(event_loop));
|
||||
Ok(())
|
||||
}
|
||||
|
||||
pub fn register(&mut self, event_loop: &mut EventLoop<Host>) -> Result<(), Error> {
|
||||
self.idle_timeout.map(|t| event_loop.clear_timeout(t));
|
||||
self.idle_timeout = event_loop.timeout_ms(self.connection.token, 1800).ok();
|
||||
self.connection.register(event_loop);
|
||||
try!(self.connection.register(event_loop));
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn read_auth(&mut self) -> Result<(), Error> {
|
||||
Ok(())
|
||||
fn read_auth(&mut self, host: &HostInfo, data: &[u8]) -> Result<(), Error> {
|
||||
trace!(target:"net", "Received handshake auth to {:?}", self.connection.socket.peer_addr());
|
||||
assert!(data.len() == AUTH_PACKET_SIZE);
|
||||
self.auth_cipher = data.to_vec();
|
||||
let auth = try!(ecies::decrypt(host.secret(), data));
|
||||
let (sig, rest) = auth.split_at(65);
|
||||
let (hepubk, rest) = rest.split_at(32);
|
||||
let (pubk, rest) = rest.split_at(64);
|
||||
let (nonce, _) = rest.split_at(32);
|
||||
self.remote_public.clone_from_slice(pubk);
|
||||
self.remote_nonce.clone_from_slice(nonce);
|
||||
let shared = try!(ecdh::agree(host.secret(), &self.remote_public));
|
||||
let signature = ec::Signature::from_slice(sig);
|
||||
let spub = try!(ec::recover(&signature, &(&shared ^ &self.remote_nonce)));
|
||||
if &spub.sha3()[..] != hepubk {
|
||||
trace!(target:"net", "Handshake hash mismath with {:?}", self.connection.socket.peer_addr());
|
||||
return Err(Error::Auth);
|
||||
};
|
||||
self.write_ack()
|
||||
}
|
||||
|
||||
fn read_ack(&mut self) -> Result<(), Error> {
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn read_hello(&mut self) -> Result<(), Error> {
|
||||
fn read_ack(&mut self, host: &HostInfo, data: &[u8]) -> Result<(), Error> {
|
||||
trace!(target:"net", "Received handshake auth to {:?}", self.connection.socket.peer_addr());
|
||||
assert!(data.len() == ACK_PACKET_SIZE);
|
||||
self.ack_cipher = data.to_vec();
|
||||
let ack = try!(ecies::decrypt(host.secret(), data));
|
||||
let (pubk, nonce) = ack.split_at(65);
|
||||
self.remote_public.clone_from_slice(pubk);
|
||||
self.remote_nonce.clone_from_slice(nonce);
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn write_auth(&mut self, host: &HostInfo) -> Result<(), Error> {
|
||||
trace!(target:"net", "Sending auth to {:?}", self.connection.socket.peer_addr());
|
||||
trace!(target:"net", "Sending handshake auth to {:?}", self.connection.socket.peer_addr());
|
||||
let mut data = [0u8; /*Signature::SIZE*/ 65 + /*H256::SIZE*/ 32 + /*Public::SIZE*/ 64 + /*H256::SIZE*/ 32 + 1]; //TODO: use associated constants
|
||||
let len = data.len();
|
||||
{
|
||||
data[len - 1] = 0x0;
|
||||
let (sig, rest) = data.split_at_mut(65);
|
||||
let (hepubk, rest) = rest.split_at_mut(32);
|
||||
let (mut pubk, rest) = rest.split_at_mut(64);
|
||||
let (nonce, rest) = rest.split_at_mut(32);
|
||||
let (pubk, rest) = rest.split_at_mut(64);
|
||||
let (nonce, _) = rest.split_at_mut(32);
|
||||
|
||||
// E(remote-pubk, S(ecdhe-random, ecdh-shared-secret^nonce) || H(ecdhe-random-pubk) || pubk || nonce || 0x0)
|
||||
let shared = try!(crypto::ecdh::agree(host.secret(), &self.id));
|
||||
let signature = try!(crypto::ec::sign(self.ecdhe.secret(), &(&shared ^ &self.nonce))).copy_to(sig);
|
||||
try!(crypto::ec::sign(self.ecdhe.secret(), &(&shared ^ &self.nonce))).copy_to(sig);
|
||||
self.ecdhe.public().sha3_into(hepubk);
|
||||
host.id().copy_to(&mut pubk);
|
||||
host.id().copy_to(pubk);
|
||||
self.nonce.copy_to(nonce);
|
||||
}
|
||||
let message = try!(crypto::ecies::encrypt(&self.id, &data));
|
||||
self.connection.send(&message[..]);
|
||||
self.auth_cipher = message;
|
||||
self.state = HandshakeState::WritingAuth;
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn write_ack(&mut self) -> Result<(), Error> {
|
||||
trace!(target:"net", "Sending handshake ack to {:?}", self.connection.socket.peer_addr());
|
||||
let mut data = [0u8; 1 + /*Public::SIZE*/ 64 + /*H256::SIZE*/ 32]; //TODO: use associated constants
|
||||
let len = data.len();
|
||||
{
|
||||
data[len - 1] = 0x0;
|
||||
let (epubk, rest) = data.split_at_mut(64);
|
||||
let (nonce, _) = rest.split_at_mut(32);
|
||||
self.ecdhe.public().copy_to(epubk);
|
||||
self.nonce.copy_to(nonce);
|
||||
}
|
||||
let message = try!(crypto::ecies::encrypt(&self.id, &data));
|
||||
self.connection.send(&message[..]);
|
||||
self.ack_cipher = message;
|
||||
self.state = HandshakeState::WritingAck;
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn write_hello(&mut self) -> Result<(), Error> {
|
||||
Ok(())
|
||||
}
|
||||
|
||||
|
||||
}
|
||||
|
||||
@ -1,6 +1,6 @@
|
||||
#![allow(dead_code)] //TODO: remove this after everything is done
|
||||
//TODO: remove all unwraps
|
||||
use std::net::{SocketAddr, AddrParseError};
|
||||
use std::net::{SocketAddr, ToSocketAddrs};
|
||||
use std::collections::{HashSet, HashMap, BTreeMap};
|
||||
use std::hash::{Hash, Hasher};
|
||||
use std::cell::{RefCell};
|
||||
@ -13,9 +13,9 @@ use mio::udp::*;
|
||||
use hash::*;
|
||||
use crypto::*;
|
||||
use time::Tm;
|
||||
use error::EthcoreError;
|
||||
use network::connection::Connection;
|
||||
use network::handshake::Handshake;
|
||||
use network::session::Session;
|
||||
use network::Error;
|
||||
|
||||
const DEFAULT_PORT: u16 = 30303;
|
||||
|
||||
@ -65,32 +65,20 @@ impl NodeEndpoint {
|
||||
udp_port: address.port()
|
||||
}
|
||||
}
|
||||
fn from_str(address: &str) -> Result<NodeEndpoint, AddrParseError> {
|
||||
let address = try!(SocketAddr::from_str(address));
|
||||
Ok(NodeEndpoint {
|
||||
address: address,
|
||||
udp_port: address.port()
|
||||
})
|
||||
fn from_str(s: &str) -> Result<NodeEndpoint, Error> {
|
||||
println!("{:?}", s);
|
||||
let address = s.to_socket_addrs().map(|mut i| i.next());
|
||||
match address {
|
||||
Ok(Some(a)) => Ok(NodeEndpoint {
|
||||
address: a,
|
||||
udp_port: a.port()
|
||||
}),
|
||||
Ok(_) => Err(Error::AddressResolve(None)),
|
||||
Err(e) => Err(Error::AddressResolve(Some(e)))
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Debug)]
|
||||
pub enum AddressError {
|
||||
AddrParseError(AddrParseError),
|
||||
NodeIdParseError(EthcoreError)
|
||||
}
|
||||
|
||||
impl From<AddrParseError> for AddressError {
|
||||
fn from(err: AddrParseError) -> AddressError {
|
||||
AddressError::AddrParseError(err)
|
||||
}
|
||||
}
|
||||
impl From<EthcoreError> for AddressError {
|
||||
fn from(err: EthcoreError) -> AddressError {
|
||||
AddressError::NodeIdParseError(err)
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(PartialEq, Eq, Copy, Clone)]
|
||||
enum PeerType {
|
||||
Required,
|
||||
@ -106,10 +94,10 @@ struct Node {
|
||||
}
|
||||
|
||||
impl FromStr for Node {
|
||||
type Err = AddressError;
|
||||
type Err = Error;
|
||||
fn from_str(s: &str) -> Result<Self, Self::Err> {
|
||||
let (id, endpoint) = if &s[..8] == "enode://" && s.len() > 136 && &s[136..137] == "@" {
|
||||
(try!(NodeId::from_str(&s[8..128])), try!(NodeEndpoint::from_str(&s[137..])))
|
||||
let (id, endpoint) = if &s[0..8] == "enode://" && s.len() > 136 && &s[136..137] == "@" {
|
||||
(try!(NodeId::from_str(&s[8..136])), try!(NodeEndpoint::from_str(&s[137..])))
|
||||
}
|
||||
else {
|
||||
(NodeId::new(), try!(NodeEndpoint::from_str(s)))
|
||||
@ -164,11 +152,6 @@ impl NodeBucket {
|
||||
}
|
||||
}
|
||||
|
||||
struct Peer {
|
||||
id: NodeId,
|
||||
connection: Connection,
|
||||
}
|
||||
|
||||
struct FindNodePacket;
|
||||
|
||||
impl FindNodePacket {
|
||||
@ -190,8 +173,6 @@ const NODETABLE_MAINTAIN: usize = 5;
|
||||
const NODETABLE_DISCOVERY: usize = 6;
|
||||
const FIRST_CONNECTION: usize = 7;
|
||||
const LAST_CONNECTION: usize = FIRST_CONNECTION + MAX_CONNECTIONS - 1;
|
||||
const FIRST_HANDSHAKE: usize = FIRST_CONNECTION + MAX_CONNECTIONS;
|
||||
const LAST_HANDSHAKE: usize = FIRST_HANDSHAKE + MAX_CONNECTIONS - 1;
|
||||
|
||||
pub enum HostMessage {
|
||||
Shutdown
|
||||
@ -217,13 +198,17 @@ impl HostInfo {
|
||||
}
|
||||
}
|
||||
|
||||
enum ConnectionEntry {
|
||||
Handshake(Handshake),
|
||||
Session(Session)
|
||||
}
|
||||
|
||||
pub struct Host {
|
||||
info: HostInfo,
|
||||
sender: Sender<HostMessage>,
|
||||
udp_socket: UdpSocket,
|
||||
listener: TcpListener,
|
||||
peers: Slab<Peer>,
|
||||
connecting: Slab<Handshake>,
|
||||
connections: Slab<ConnectionEntry>,
|
||||
discovery_round: u16,
|
||||
discovery_id: NodeId,
|
||||
discovery_nodes: HashSet<NodeId>,
|
||||
@ -269,8 +254,7 @@ impl Host {
|
||||
sender: sender,
|
||||
udp_socket: udp_socket,
|
||||
listener: listener,
|
||||
peers: Slab::new_starting_at(Token(FIRST_CONNECTION), MAX_CONNECTIONS),
|
||||
connecting: Slab::new_starting_at(Token(FIRST_HANDSHAKE), MAX_CONNECTIONS),
|
||||
connections: Slab::new_starting_at(Token(FIRST_CONNECTION), MAX_CONNECTIONS),
|
||||
discovery_round: 0,
|
||||
discovery_id: NodeId::new(),
|
||||
discovery_nodes: HashSet::new(),
|
||||
@ -281,10 +265,10 @@ impl Host {
|
||||
|
||||
|
||||
host.add_node("enode://5374c1bff8df923d3706357eeb4983cd29a63be40a269aaa2296ee5f3b2119a8978c0ed68b8f6fc84aad0df18790417daadf91a4bfbb786a16c9b0a199fa254a@gav.ethdev.com:30300");
|
||||
host.add_node("enode://e58d5e26b3b630496ec640f2530f3e7fa8a8c7dfe79d9e9c4aac80e3730132b869c852d3125204ab35bb1b1951f6f2d40996c1034fd8c5a69b383ee337f02dd@gav.ethdev.com:30303");
|
||||
host.add_node("enode://a979fb575495b8d6db44f750317d0f4622bf4c2aa3365d6af7c284339968eef29b69ad0dce72a4d8db5ebb4968de0e3bec910127f134779fbcb0cb6d3331163@52.16.188.185:30303");
|
||||
host.add_node("enode://7f25d3eab333a6b98a8b5ed68d962bb22c876ffcd5561fca54e3c2ef27f754df6f7fd7c9b74cc919067abac154fb8e1f8385505954f161ae440abc355855e03@54.207.93.166:30303");
|
||||
host.add_node("enode://5374c1bff8df923d3706357eeb4983cd29a63be40a269aaa2296ee5f3b2119a8978c0ed68b8f6fc84aad0df18790417daadf91a4bfbb786a16c9b0a199fa254@92.51.165.126:30303");
|
||||
host.add_node("enode://e58d5e26b3b630496ec640f2530f3e7fa8a8c7dfe79d9e9c4aac80e3730132b869c852d3125204ab35bb1b1951f6f2d40996c1034fd8c5a69b383ee337f02ddc@gav.ethdev.com:30303");
|
||||
host.add_node("enode://a979fb575495b8d6db44f750317d0f4622bf4c2aa3365d6af7c284339968eef29b69ad0dce72a4d8db5ebb4968de0e3bec910127f134779fbcb0cb6d3331163c@52.16.188.185:30303");
|
||||
host.add_node("enode://7f25d3eab333a6b98a8b5ed68d962bb22c876ffcd5561fca54e3c2ef27f754df6f7fd7c9b74cc919067abac154fb8e1f8385505954f161ae440abc355855e034@54.207.93.166:30303");
|
||||
host.add_node("enode://5374c1bff8df923d3706357eeb4983cd29a63be40a269aaa2296ee5f3b2119a8978c0ed68b8f6fc84aad0df18790417daadf91a4bfbb786a16c9b0a199fa254a@92.51.165.126:30303");
|
||||
|
||||
event_loop.run(&mut host).unwrap();
|
||||
}
|
||||
@ -299,7 +283,10 @@ impl Host {
|
||||
fn add_node(&mut self, id: &str) {
|
||||
match Node::from_str(id) {
|
||||
Err(e) => { warn!("Could not add node: {:?}", e); },
|
||||
Ok(n) => { self.nodes.insert(n.id.clone(), n); }
|
||||
Ok(n) => {
|
||||
self.node_buckets[Host::distance(self.info.id(), &n.id) as usize].nodes.push(n.id.clone());
|
||||
self.nodes.insert(n.id.clone(), n);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
@ -343,13 +330,7 @@ impl Host {
|
||||
}
|
||||
|
||||
fn distance(a: &NodeId, b: &NodeId) -> u32 {
|
||||
//TODO:
|
||||
//u256 d = sha3(_a) ^ sha3(_b);
|
||||
let mut d: NodeId = NodeId::new();
|
||||
for i in 0..32 {
|
||||
d[i] = a[i] ^ b[i];
|
||||
}
|
||||
|
||||
let d = a.sha3() ^ b.sha3();
|
||||
let mut ret:u32 = 0;
|
||||
for i in 0..32 {
|
||||
let mut v: u8 = d[i];
|
||||
@ -448,11 +429,11 @@ impl Host {
|
||||
}
|
||||
|
||||
fn have_session(&self, id: &NodeId) -> bool {
|
||||
self.peers.iter().any(|h| h.id.eq(&id))
|
||||
self.connections.iter().any(|e| match e { &ConnectionEntry::Session(ref s) => s.id.eq(&id), _ => false })
|
||||
}
|
||||
|
||||
fn connecting_to(&self, id: &NodeId) -> bool {
|
||||
self.connecting.iter().any(|h| h.id.eq(&id))
|
||||
self.connections.iter().any(|e| match e { &ConnectionEntry::Handshake(ref h) => h.id.eq(&id), _ => false })
|
||||
}
|
||||
|
||||
fn connect_peers(&mut self, event_loop: &mut EventLoop<Host>) {
|
||||
@ -529,10 +510,18 @@ impl Host {
|
||||
};
|
||||
|
||||
let nonce = self.info.next_nonce();
|
||||
match self.connecting.insert_with(|token| Handshake::new(token, id, socket, &nonce).expect("Can't create handshake")) {
|
||||
match self.connections.insert_with(|token| ConnectionEntry::Handshake(Handshake::new(token, id, socket, &nonce).expect("Can't create handshake"))) {
|
||||
Some(token) => {
|
||||
self.connecting[token].register(event_loop).expect("Handshake token regisration failed");
|
||||
self.connecting[token].start(&self.info, true);
|
||||
match self.connections.get_mut(token) {
|
||||
Some(&mut ConnectionEntry::Handshake(ref mut h)) => {
|
||||
h.start(&self.info, true)
|
||||
.and_then(|_| h.register(event_loop))
|
||||
.unwrap_or_else (|e| {
|
||||
debug!(target: "net", "Handshake create error: {:?}", e);
|
||||
});
|
||||
},
|
||||
_ => {}
|
||||
}
|
||||
},
|
||||
None => { warn!("Max connections reached") }
|
||||
}
|
||||
@ -543,57 +532,86 @@ impl Host {
|
||||
warn!(target: "net", "accept");
|
||||
}
|
||||
|
||||
fn handshake_writable(&mut self, token: Token, event_loop: &mut EventLoop<Host>) {
|
||||
if !{
|
||||
let handshake = match self.connecting.get_mut(token) {
|
||||
Some(h) => h,
|
||||
None => {
|
||||
warn!(target: "net", "Received event for unknown handshake");
|
||||
return;
|
||||
fn connection_writable(&mut self, token: Token, event_loop: &mut EventLoop<Host>) {
|
||||
let mut kill = false;
|
||||
let mut create_session = false;
|
||||
{
|
||||
match self.connections.get_mut(token) {
|
||||
Some(&mut ConnectionEntry::Handshake(ref mut h)) => {
|
||||
h.writable(event_loop, &self.info).unwrap_or_else(|e| {
|
||||
debug!(target: "net", "Handshake write error: {:?}", e);
|
||||
kill = true;
|
||||
});
|
||||
create_session = h.done();
|
||||
},
|
||||
Some(&mut ConnectionEntry::Session(ref mut s)) => {
|
||||
s.writable(event_loop, &self.info).unwrap_or_else(|e| {
|
||||
debug!(target: "net", "Session write error: {:?}", e);
|
||||
kill = true;
|
||||
});
|
||||
}
|
||||
_ => {
|
||||
warn!(target: "net", "Received event for unknown connection");
|
||||
}
|
||||
};
|
||||
match handshake.writable(event_loop, &self.info) {
|
||||
Err(e) => {
|
||||
debug!(target: "net", "Handshake read error: {:?}", e);
|
||||
false
|
||||
},
|
||||
Ok(_) => true
|
||||
}
|
||||
} {
|
||||
self.kill_handshake(token, event_loop);
|
||||
}
|
||||
if kill {
|
||||
self.kill_connection(token, event_loop);
|
||||
}
|
||||
if create_session {
|
||||
self.start_session(token, event_loop);
|
||||
}
|
||||
}
|
||||
fn handshake_readable(&mut self, token: Token, event_loop: &mut EventLoop<Host>) {
|
||||
if !{
|
||||
let handshake = match self.connecting.get_mut(token) {
|
||||
Some(h) => h,
|
||||
None => {
|
||||
warn!(target: "net", "Received event for unknown handshake");
|
||||
return;
|
||||
fn connection_readable(&mut self, token: Token, event_loop: &mut EventLoop<Host>) {
|
||||
let mut kill = false;
|
||||
let mut create_session = false;
|
||||
{
|
||||
match self.connections.get_mut(token) {
|
||||
Some(&mut ConnectionEntry::Handshake(ref mut h)) => {
|
||||
h.readable(event_loop, &self.info).unwrap_or_else(|e| {
|
||||
debug!(target: "net", "Handshake read error: {:?}", e);
|
||||
kill = true;
|
||||
});
|
||||
create_session = h.done();
|
||||
},
|
||||
Some(&mut ConnectionEntry::Session(ref mut s)) => {
|
||||
s.readable(event_loop, &self.info).unwrap_or_else(|e| {
|
||||
debug!(target: "net", "Session read error: {:?}", e);
|
||||
kill = true;
|
||||
});
|
||||
}
|
||||
_ => {
|
||||
warn!(target: "net", "Received event for unknown connection");
|
||||
}
|
||||
};
|
||||
match handshake.writable(event_loop, &self.info) {
|
||||
Err(e) => {
|
||||
debug!(target: "net", "Handshake read error: {:?}", e);
|
||||
false
|
||||
},
|
||||
Ok(_) => true
|
||||
}
|
||||
} {
|
||||
self.kill_handshake(token, event_loop);
|
||||
}
|
||||
if kill {
|
||||
self.kill_connection(token, event_loop);
|
||||
}
|
||||
if create_session {
|
||||
self.start_session(token, event_loop);
|
||||
}
|
||||
}
|
||||
fn handshake_timeout(&mut self, token: Token, event_loop: &mut EventLoop<Host>) {
|
||||
self.kill_handshake(token, event_loop)
|
||||
}
|
||||
fn kill_handshake(&mut self, token: Token, _event_loop: &mut EventLoop<Host>) {
|
||||
self.connecting.remove(token);
|
||||
|
||||
fn start_session(&mut self, token: Token, event_loop: &mut EventLoop<Host>) {
|
||||
self.connections.replace_with(token, |c| {
|
||||
match c {
|
||||
ConnectionEntry::Handshake(h) => Session::new(h, event_loop)
|
||||
.map(|s| Some(ConnectionEntry::Session(s)))
|
||||
.unwrap_or_else(|e| {
|
||||
debug!(target: "net", "Session construction error: {:?}", e);
|
||||
None
|
||||
}),
|
||||
_ => { panic!("No handshake to create a session from"); }
|
||||
}
|
||||
}).expect("Error updating slab with session");
|
||||
}
|
||||
|
||||
fn read_connection(&mut self, _token: Token, _event_loop: &mut EventLoop<Host>) {
|
||||
fn connection_timeout(&mut self, token: Token, event_loop: &mut EventLoop<Host>) {
|
||||
self.kill_connection(token, event_loop)
|
||||
}
|
||||
|
||||
fn write_connection(&mut self, _token: Token, _event_loop: &mut EventLoop<Host>) {
|
||||
fn kill_connection(&mut self, token: Token, _event_loop: &mut EventLoop<Host>) {
|
||||
self.connections.remove(token);
|
||||
}
|
||||
}
|
||||
|
||||
@ -606,16 +624,14 @@ impl Handler for Host {
|
||||
match token.as_usize() {
|
||||
TCP_ACCEPT => self.accept(event_loop),
|
||||
IDLE => self.maintain_network(event_loop),
|
||||
FIRST_CONNECTION ... LAST_CONNECTION => self.read_connection(token, event_loop),
|
||||
FIRST_HANDSHAKE ... LAST_HANDSHAKE => self.handshake_readable(token, event_loop),
|
||||
FIRST_CONNECTION ... LAST_CONNECTION => self.connection_readable(token, event_loop),
|
||||
NODETABLE_RECEIVE => {},
|
||||
_ => panic!("Received unknown readable token"),
|
||||
}
|
||||
}
|
||||
else if events.is_writable() {
|
||||
match token.as_usize() {
|
||||
FIRST_CONNECTION ... LAST_CONNECTION => self.write_connection(token, event_loop),
|
||||
FIRST_HANDSHAKE ... LAST_HANDSHAKE => self.handshake_writable(token, event_loop),
|
||||
FIRST_CONNECTION ... LAST_CONNECTION => self.connection_writable(token, event_loop),
|
||||
_ => panic!("Received unknown writable token"),
|
||||
}
|
||||
}
|
||||
@ -624,7 +640,7 @@ impl Handler for Host {
|
||||
fn timeout(&mut self, event_loop: &mut EventLoop<Host>, token: Token) {
|
||||
match token.as_usize() {
|
||||
IDLE => self.maintain_network(event_loop),
|
||||
FIRST_HANDSHAKE ... LAST_HANDSHAKE => self.handshake_timeout(token, event_loop),
|
||||
FIRST_CONNECTION ... LAST_CONNECTION => self.connection_timeout(token, event_loop),
|
||||
NODETABLE_DISCOVERY => {},
|
||||
NODETABLE_MAINTAIN => {},
|
||||
_ => panic!("Received unknown timer token"),
|
||||
@ -636,9 +652,11 @@ impl Handler for Host {
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use network::host::Host;
|
||||
use env_logger;
|
||||
#[test]
|
||||
#[ignore]
|
||||
//#[ignore]
|
||||
fn net_connect() {
|
||||
env_logger::init().unwrap();
|
||||
let _ = Host::start();
|
||||
}
|
||||
}
|
||||
|
||||
@ -1,13 +1,18 @@
|
||||
extern crate mio;
|
||||
pub mod host;
|
||||
pub mod connection;
|
||||
pub mod handshake;
|
||||
|
||||
mod host;
|
||||
mod connection;
|
||||
mod handshake;
|
||||
mod session;
|
||||
|
||||
#[derive(Debug)]
|
||||
pub enum Error {
|
||||
Crypto(::crypto::CryptoError),
|
||||
Io(::std::io::Error),
|
||||
Auth,
|
||||
BadProtocol,
|
||||
AddressParse(::std::net::AddrParseError),
|
||||
AddressResolve(Option<::std::io::Error>),
|
||||
NodeIdParse(::error::EthcoreError),
|
||||
}
|
||||
|
||||
impl From<::std::io::Error> for Error {
|
||||
@ -21,4 +26,23 @@ impl From<::crypto::CryptoError> for Error {
|
||||
Error::Crypto(err)
|
||||
}
|
||||
}
|
||||
impl From<::std::net::AddrParseError> for Error {
|
||||
fn from(err: ::std::net::AddrParseError) -> Error {
|
||||
Error::AddressParse(err)
|
||||
}
|
||||
}
|
||||
impl From<::error::EthcoreError> for Error {
|
||||
fn from(err: ::error::EthcoreError) -> Error {
|
||||
Error::NodeIdParse(err)
|
||||
}
|
||||
}
|
||||
impl From<::rlp::DecoderError> for Error {
|
||||
fn from(_err: ::rlp::DecoderError) -> Error {
|
||||
Error::Auth
|
||||
}
|
||||
}
|
||||
|
||||
pub fn start_host()
|
||||
{
|
||||
let _ = host::Host::start();
|
||||
}
|
||||
|
||||
33
src/network/session.rs
Normal file
33
src/network/session.rs
Normal file
@ -0,0 +1,33 @@
|
||||
#![allow(dead_code)] //TODO: remove this after everything is done
|
||||
//TODO: remove all unwraps
|
||||
use mio::*;
|
||||
use hash::*;
|
||||
use network::connection::{EncryptedConnection};
|
||||
use network::handshake::Handshake;
|
||||
use network::Error;
|
||||
use network::host::*;
|
||||
|
||||
pub struct Session {
|
||||
pub id: NodeId,
|
||||
connection: EncryptedConnection,
|
||||
}
|
||||
|
||||
impl Session {
|
||||
pub fn new(h: Handshake, event_loop: &mut EventLoop<Host>) -> Result<Session, Error> {
|
||||
let id = h.id.clone();
|
||||
let mut connection = try!(EncryptedConnection::new(h));
|
||||
try!(connection.register(event_loop));
|
||||
Ok(Session {
|
||||
id: id,
|
||||
connection: connection,
|
||||
})
|
||||
}
|
||||
pub fn readable(&mut self, event_loop: &mut EventLoop<Host>, _host: &HostInfo) -> Result<(), Error> {
|
||||
try!(self.connection.readable(event_loop));
|
||||
Ok(())
|
||||
}
|
||||
pub fn writable(&mut self, event_loop: &mut EventLoop<Host>, _host: &HostInfo) -> Result<(), Error> {
|
||||
self.connection.writable(event_loop)
|
||||
}
|
||||
}
|
||||
|
||||
@ -19,7 +19,9 @@ impl<T> Hashable for T where T: BytesConvertable {
|
||||
}
|
||||
}
|
||||
fn sha3_into(&self, dest: &mut [u8]) {
|
||||
keccak_256(self.bytes(), dest);
|
||||
let mut keccak = Keccak::new_keccak256();
|
||||
keccak.update(self.bytes());
|
||||
keccak.finalize(dest);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user