extern crate sodiumoxide;
use std::sync::{Mutex, Arc, mpsc};
use std::io::Error as IoError;
use types;
use interface::Interface;
use message_header;
use messages;
use std::thread;
use cbor;
use crust;
use rand;
use sodiumoxide::crypto;
type ConnectionManager = crust::ConnectionManager;
type Event = crust::Event;
type Endpoint = crust::Endpoint;
pub enum CryptoError {
Unknown
}
#[derive(Clone)]
pub struct ClientIdPacket {
public_keys: (crypto::sign::PublicKey, crypto::asymmetricbox::PublicKey),
secret_keys: (crypto::sign::SecretKey, crypto::asymmetricbox::SecretKey)
}
impl ClientIdPacket {
pub fn new(public_keys: (crypto::sign::PublicKey, crypto::asymmetricbox::PublicKey),
secret_keys: (crypto::sign::SecretKey, crypto::asymmetricbox::SecretKey)) -> ClientIdPacket {
ClientIdPacket {
public_keys: public_keys,
secret_keys: secret_keys
}
}
pub fn get_id(&self) -> types::DhtId {
types::DhtId(self.public_keys.0 .0.to_vec())
}
pub fn get_public_keys(&self) -> &(crypto::sign::PublicKey, crypto::asymmetricbox::PublicKey){
&self.public_keys
}
pub fn sign(&self, data : &[u8]) -> Vec<u8> {
return crypto::sign::sign(&data, &self.secret_keys.0)
}
pub fn encrypt(&self, data : &[u8], to : &crypto::asymmetricbox::PublicKey) -> (Vec<u8>, crypto::asymmetricbox::Nonce) {
let nonce = crypto::asymmetricbox::gen_nonce();
let encrypted = crypto::asymmetricbox::seal(data, &nonce, &to, &self.secret_keys.1);
return (encrypted, nonce);
}
pub fn decrypt(&self, data : &[u8], nonce : &crypto::asymmetricbox::Nonce,
from : &crypto::asymmetricbox::PublicKey) -> Result<Vec<u8>, CryptoError> {
return crypto::asymmetricbox::open(&data, &nonce, &from, &self.secret_keys.1).ok_or(CryptoError::Unknown);
}
}
pub struct RoutingClient<'a, F: Interface + 'a> {
interface: Arc<Mutex<F>>,
connection_manager: ConnectionManager,
id_packet: ClientIdPacket,
bootstrap_address: (types::DhtId, Endpoint),
message_id: u32,
join_guard: thread::JoinGuard<'a, ()>,
}
impl<'a, F> Drop for RoutingClient<'a, F> where F: Interface {
fn drop(&mut self) {
}
}
impl<'a, F> RoutingClient<'a, F> where F: Interface {
pub fn new(my_interface: Arc<Mutex<F>>,
id_packet: ClientIdPacket,
bootstrap_add: (types::DhtId, crust::Endpoint)) -> RoutingClient<'a, F> {
sodiumoxide::init(); let (tx, rx): (mpsc::Sender<Event>, mpsc::Receiver<Event>) = mpsc::channel();
RoutingClient {
interface: my_interface.clone(),
connection_manager: crust::ConnectionManager::new(tx),
id_packet: id_packet.clone(),
bootstrap_address: bootstrap_add.clone(),
message_id: rand::random::<u32>(),
join_guard: thread::scoped(move || RoutingClient::start(rx, bootstrap_add.0, id_packet.get_id(), my_interface)),
}
}
pub fn get(&mut self, type_id: u64, name: types::DhtId) -> Result<u32, IoError> {
let get_data = messages::get_data::GetData {
requester: types::SourceAddress {
from_node: self.bootstrap_address.0.clone(),
from_group: None,
reply_to: Some(self.id_packet.get_id()),
},
name_and_type_id: types::NameAndTypeId {
name: name.0.clone(),
type_id: type_id as u32,
},
};
let header = message_header::MessageHeader::new(
self.message_id,
types::DestinationAddress {
dest: name.clone(),
reply_to: None
},
get_data.requester.clone(),
types::Authority::Client,
None,
);
self.message_id += 1;
let routing_msg = messages::RoutingMessage::new(
messages::MessageTypeTag::GetData,
header,
get_data,
);
let mut encoder_routingmsg = cbor::Encoder::from_memory();
encoder_routingmsg.encode(&[&routing_msg]).unwrap();
match self.connection_manager.send(self.bootstrap_address.1.clone(), encoder_routingmsg.into_bytes()) {
Ok(_) => Ok(self.message_id - 1),
Err(error) => Err(error),
}
}
pub fn put(&mut self, name: types::DhtId, content: Vec<u8>) -> Result<(u32), IoError> {
let put_data = messages::put_data::PutData {
name: name.0.clone(),
data: content,
};
let header = message_header::MessageHeader::new(
self.message_id,
types::DestinationAddress {
dest: self.id_packet.get_id(),
reply_to: None,
},
types::SourceAddress {
from_node: self.bootstrap_address.0.clone(),
from_group: None,
reply_to: Some(self.id_packet.get_id()),
},
types::Authority::Client,
Some(types::Signature::generate_random()), );
self.message_id += 1;
let routing_msg = messages::RoutingMessage::new(
messages::MessageTypeTag::PutData,
header,
put_data,
);
let mut encoder_routingmsg = cbor::Encoder::from_memory();
encoder_routingmsg.encode(&[&routing_msg]).unwrap();
match self.connection_manager.send(self.bootstrap_address.1.clone(), encoder_routingmsg.into_bytes()) {
Ok(_) => Ok(self.message_id - 1),
Err(error) => Err(error),
}
}
fn start(rx: mpsc::Receiver<Event>, bootstrap_add: types::DhtId, own_address: types::DhtId, my_interface: Arc<Mutex<F>>) {
for it in rx.iter() {
match it {
crust::connection_manager::Event::NewMessage(id, bytes) => {
let mut decode_routing_msg = cbor::Decoder::from_bytes(&bytes[..]);
let routing_msg: messages::RoutingMessage = decode_routing_msg.decode().next().unwrap().unwrap();
if routing_msg.message_header.destination.dest == bootstrap_add &&
routing_msg.message_header.destination.reply_to.is_some() &&
routing_msg.message_header.destination.reply_to.unwrap() == own_address {
match routing_msg.message_type {
messages::MessageTypeTag::GetDataResponse => {
let mut interface = my_interface.lock().unwrap();
interface.handle_get_response(routing_msg.message_header.source.from_node.clone(),
Ok(routing_msg.serialised_body));
}
_ => unimplemented!(),
}
}
},
_ => unimplemented!(),
};
}
}
fn add_bootstrap(&self) { unimplemented!() }
}