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|
use std::io::{
BufferedReader,
TcpStream,
IoError,
IoResult
};
use std::mem;
use callback::Callback;
use message;
use message::{ Command, Message };
#[cfg(feature = "ssl")]
use openssl::ssl::{ SslContext, SslMethod, SslStream };
#[derive(Show, PartialEq, Eq, Clone)]
pub enum Failure {
AlreadyConnected,
NotConnected,
Io(IoError)
}
/// Yes, I don't like the name either, but it's private, so...
enum StreamKind {
Plain(TcpStream),
#[cfg(feature = "ssl")]
Ssl(SslStream)
}
impl Writer for StreamKind {
fn write(&mut self, buf: &[u8]) -> IoResult<()> {
match *self {
StreamKind::Plain(ref mut s) => s.write(buf),
#[cfg(feature = "ssl")]
StreamKind::Ssl(ref mut s) => s.write(buf)
}
}
}
impl Reader for StreamKind {
fn read(&mut self, buf: &mut [u8]) -> IoResult<uint> {
match *self {
StreamKind::Plain(ref mut s) => s.read(buf),
#[cfg(feature = "ssl")]
StreamKind::Ssl(ref mut s) => s.read(buf)
}
}
}
pub struct Event<'a> {
pub server: &'a mut Server<'a>,
pub message: &'a Message
}
pub struct Server<'a> {
stream: Option<StreamKind>,
pub events: Callback<Event<'a>>,
}
impl<'a> Server<'a> {
pub fn new() -> Server<'a> {
Server {
stream: None,
events: {
let mut c = Callback::new();
c.register(Server::handle_event);
c
}
}
}
fn handle_event(e: &mut Event) {
match e.message.command {
Command::PING => {
e.server.sendraw(format!("PONG :{}", message::join(e.message.content.clone(), 0)).as_slice(), true).unwrap();
}
_ => ()
}
}
pub fn connect(&mut self, host: String, port: u16) -> Result<(), Failure> {
let s = &mut self.stream;
match *s { Some(_) => return Err(Failure::AlreadyConnected), _ => () };
*s = match TcpStream::connect((host.as_slice(), port)) {
Ok(tcp) => Some(StreamKind::Plain(tcp)),
Err(e) => return Err(Failure::Io(e))
};
Ok(())
}
#[cfg(feature = "ssl")]
pub fn connect_ssl(&mut self, host: String, port: u16) -> Result<(), Failure> {
let mut s = self.stream.lock();
match *s { Some(_) => return Err(Failure::AlreadyConnected), _ => () };
let tcp_stream = match TcpStream::connect((host.as_slice(), port)) {
Ok(tcp) => Some(tcp),
Err(e) => return Err(Failure::Io(e))
};
let ssl = SslContext::new(SslMethod::Tlsv1);
let ssl_stream = SslStream::new(&ssl, tcp_stream);
*s = ssl_stream;
Ok(())
}
#[inline]
fn sendraw(&mut self, s: &str, newline: bool) -> Result<(), Failure> {
info!(">> {}", s);
if cfg!(not(ndebug)) && s.len() > 510 {
panic!("Message too long, kitties will die if this runs in release mode. Msg: {}", s)
}
let stream = &mut self.stream;
if stream.is_some() {
stream.as_mut().map(|stream| {
match stream.write_str(s) {
Ok(_) => match { if newline { stream.write_str("\r\n") } else { Ok(()) } } {
Ok(_) => match stream.flush() {
Ok(_) => Ok(()),
Err(e) => return Err(Failure::Io(e))
},
Err(e) => return Err(Failure::Io(e))
},
Err(e) => return Err(Failure::Io(e))
}
}).unwrap()
} else {
Err(Failure::NotConnected)
}
}
pub fn send(&mut self, msg: message::Message) -> Result<(), Failure> {
self.sendraw(msg.format()[], true)
}
pub fn join(&mut self, channel: &str) -> Result<(), Failure> {
self.sendraw(format!("JOIN {}", channel).as_slice(), true)
}
pub fn part(&mut self, channel: &str) -> Result<(), Failure> {
self.sendraw(format!("PART {}", channel).as_slice(), true)
}
pub fn nick(&mut self, nick: &str) -> Result<(), Failure> {
self.sendraw(format!("NICK {}", nick).as_slice(), true)
}
pub fn user(&mut self, username: &str, hostname: &str, servername: &str, realname: &str) -> Result<(), Failure> {
self.sendraw(format!("USER {} {} {} :{}", username, hostname, servername, realname).as_slice(), true)
}
pub fn password(&mut self, password: &str) -> Result<(), Failure> {
self.sendraw(format!("PASS {}", password).as_slice(), true)
}
pub fn msg(&mut self, target: &str, message: &str) -> Result<(), Failure> {
self.sendraw(format!("PRIVMSG {} :{}", target, message).as_slice(), true)
}
pub fn listen(&mut self) -> Result<(), Failure> {
let stream = {
match self.stream {
Some(ref s) => s.clone(),
None => return Err(Failure::NotConnected)
}
};
let mut reader = BufferedReader::new(match *stream {
StreamKind::Plain(ref s) => (*s).clone(),
#[cfg(feature = "ssl")]
StreamKind::Ssl(ref s) => (*s).clone()
});
loop {
let line = reader.read_line().unwrap();
info!("<< {}", line);
if let Some(msg) = Message::parse(line[]) {
let mut e = self.events;
e.fire(&mut Event {
server: self,
message: &msg
});
}
}
}
}
|