83967dac4640651ecce039c4ecc277da7d58ccfe
2 use std
::io
::{ MemWriter
, Acceptor
, Listener
, TcpStream
, IoResult
, IoError
, EndOfFile
};
3 use std
::io
::net
::tcp
::{ TcpAcceptor
, TcpListener
};
4 use std
::thread
::Thread
;
6 use packet
::{ Packet
, ReadingResult
, PacketType
};
7 use packet
::PacketType
::{ Command
, Answer
, Error
};
10 // Default timeout when waiting data on a stream (for instance: 'TcpStream::read').
11 static DEFAULT_TIMEOUT
: Option
<u64> = Some(500); // [ms].
14 acceptor
: TcpAcceptor
,
23 current_timestamp
: u64,
24 variant
: packet
::Variant
,
28 pub fn new(interface
: &str, port
: u16, variant
: packet
::Variant
) -> IoResult
<Server
> {
29 let mut acceptor
= try!(TcpListener
::bind((interface
, port
)).listen());
32 acceptor
: acceptor
.clone()
35 Thread
::spawn(move || {
37 for stream
in acceptor
.incoming() {
40 Thread
::spawn(move || {
41 Server
::handle_client(EndPoint
::new(stream
, variant
));
52 pub fn close(&mut self) -> IoResult
<()> {
53 self.acceptor
.close_accept()
56 fn handle_client(mut end_point
: EndPoint
) {
58 match end_point
.read() {
59 Ok(packet@Packet
{ t
: Command(..), .. }) => {
60 end_point
.print("Server", format!("Valid command received: {}", packet
));
61 let answer
= Answer(Packet
::random_packet_data(&[]));
62 match end_point
.send(answer
.clone()) {
64 end_point
.print("Server", format!("Answer sent: {}", answer
)),
66 end_point
.print("Server", format!("Can't send the answer. Error: {}", e
))
69 // Socket has been closed.
70 Err(packet
::ReadingError
::IO(IoError
{ kind
: EndOfFile
, .. })) => {
71 end_point
.print("Server", format!("Connection closed: EOF"));
75 end_point
.print("Server", format!("Error or invalid packet: {}", other
))
82 pub fn new(address
: &str, port
: u16, variant
: packet
::Variant
) -> IoResult
<Client
> {
83 Ok(Client
{ end_point
: EndPoint
{
84 socket
: try!(TcpStream
::connect((address
, port
))),
91 pub fn close(&mut self) -> IoResult
<()> {
92 self.end_point
.close()
95 pub fn send(&mut self, packet
: PacketType
) -> bool
{
98 self.end_point
.print("Client", format!("Sending: {}", packet
));
99 match self.end_point
.send_with_result(packet
) {
100 Ok(Ok(packet@Packet
{ t
: Answer(..), .. })) => {
101 self.end_point
.print("Client", format!("Command transmitted correctly, answer: {}", packet
));
105 self.end_point
.print("Client", format!("Command transmitted correctly, wrong answer: {}", packet
));
109 self.end_point
.print("Client", format!("Answer error: {}", e
));
113 self.end_point
.print("Client", format!("Can't send the packet. Error: {}", e
));
119 self.end_point
.print("Client", format!("Cannot send this type of packet: {}", other
));
125 /// Sends some valid and not-valid packets to the server and check the result.
126 /// For each test a new client is created.
127 pub fn start_tests(address
: &str, port
: u16, variant
: packet
::Variant
) {
128 let execute
= |f
: &mut |&mut Client
| -> bool
| -> bool
{
129 match Client
::new(address
, port
, variant
) {
130 Ok(ref mut client
) => (*f
)(client
),
132 println!("Unable to create a client. Error: {}", e
);
138 fn raw_packet(timestamp
: u64) -> Vec
<u8> {
139 let mut m
= MemWriter
::new();
140 match (Packet
{ t
: Command(Packet
::random_packet_data(&[42])), timestamp
: timestamp
}).write(&mut m
, packet
::Variant
::Weak
) {
146 let mut tests
= vec!(
148 |client
: &mut Client
| -> bool
{
149 println!("Sending a valid packet...");
150 client
.send(Command(Packet
::random_packet_data(&[42])))
153 |client
: &mut Client
| -> bool
{
154 println!("Sending a packet with an unknown type...");
155 client
.end_point
.current_timestamp
+= 1;
156 let mut raw_packet
= raw_packet(client
.end_point
.current_timestamp
);
157 raw_packet
[2] = 0xEE; // Alter the type.
158 match client
.end_point
.send_raw_with_result(raw_packet
.as_slice()) {
159 Ok(Err(packet
::ReadingError
::IO( IoError
{ kind
: io
::TimedOut
, .. }))) => true, // OK: the server should not send any packet.
161 println!("Error: {}", other
);
167 |client
: &mut Client
| -> bool
{
168 println!("Sending a packet with an old timestamp...");
169 client
.end_point
.current_timestamp
+= 1;
170 let raw_packet
= raw_packet(0);
171 match client
.end_point
.send_raw_with_result(raw_packet
.as_slice()) {
172 Ok(Err(packet
::ReadingError
::IO( IoError
{ kind
: io
::TimedOut
, .. }))) => true, // OK: the server should not send any packet.
174 println!("Error: {}", other
);
180 |client
: &mut Client
| -> bool
{
181 println!("Sending a packet with altered crypted data (do not alter the padding)...");
182 client
.end_point
.current_timestamp
+= 1;
183 let mut raw_packet
= raw_packet(client
.end_point
.current_timestamp
);
184 raw_packet
[11] = 0xDE;
185 raw_packet
[12] = 0xAD;
186 raw_packet
[13] = 0xBE;
187 raw_packet
[14] = 0xEF;
188 match client
.end_point
.send_raw_with_result(raw_packet
.as_slice()) {
189 Ok(Ok(Packet
{ t
: Error(packet
::ErrorType
::Auth
), .. })) => true,
191 println!("Error: {}", other
);
197 |client
: &mut Client
| -> bool
{
198 println!("Sending a packet with too small data...");
199 let command
= Command(Packet
::new_packet_data(0, from_elem(6, 0x00)));
200 match client
.end_point
.send_with_result(command
) {
201 Ok(Err(packet
::ReadingError
::IO( IoError
{ kind
: io
::TimedOut
, .. }))) => true, // OK: the server should not send any packet.
203 println!("Error: {}", other
);
209 |client
: &mut Client
| -> bool
{
210 println!("Sending a packet with too large data...");
211 let command
= Command(Packet
::new_packet_data(0, from_elem(40, 0x00)));
212 match client
.end_point
.send_with_result(command
) {
213 Ok(Err(packet
::ReadingError
::IO( IoError
{ kind
: io
::TimedOut
, .. }))) => true, // OK: the server should not send any packet.
215 println!("Error: {}", other
);
221 |client
: &mut Client
| -> bool
{
222 println!("Sending a packet with wrong padding (all 0)...");
223 client
.end_point
.current_timestamp
+= 1;
224 let mut m
= MemWriter
::new();
225 let raw_packet
= match (Packet
{ t
: Command(Packet
::random_packet_data(&[42])), timestamp
: client
.end_point
.current_timestamp
}).write_with_padding_fun(&mut m
, packet
::Variant
::Weak
, |_
, _
| -> u8 { 0 }) {
230 match client
.end_point
.send_raw_with_result(raw_packet
.as_slice()) {
231 Ok(Ok(Packet
{ t
: Error(packet
::ErrorType
::Crypt
), .. })) => true,
233 println!("Error: {}", other
);
240 let mut nb_test_passed
= 0;
241 for (i
, test
) in range(1, tests
.len()+1).zip(tests
.iter_mut()) {
242 println!("===== Test case #{}:", i
);
245 println!("===== Test passed");
247 println!("===== Test failed");
251 if nb_test_passed
== tests
.len() {
252 println!("All tests passed");
254 println!("#{} test(s) failed", tests
.len() - nb_test_passed
);
260 pub fn new(mut socket
: TcpStream
, variant
: packet
::Variant
) -> EndPoint
{
261 let _
= socket
.set_nodelay(true);
262 EndPoint
{ socket
: socket
, current_timestamp
: 0 , variant
: variant
}
266 fn close(&mut self) -> IoResult
<()> {
267 try!(self.socket
.close_read());
268 try!(self.socket
.close_write());
272 fn print(&self, prefix
: &str, s
: String
) {
273 println!("[{}] time: {}. {}", prefix
, self.current_timestamp
, s
);
276 /// Sends a packet and wait for an answer synchronously.
277 fn send_with_result(&mut self, p
: PacketType
) -> IoResult
<ReadingResult
> {
284 /// Sends arbitrary data and wait for an answer synchronously.
285 /// Doesn't increment the current timestamp.
286 pub fn send_raw_with_result(&mut self, p
: &[u8]) -> IoResult
<ReadingResult
> {
287 self.socket
.set_timeout(DEFAULT_TIMEOUT
);
288 match self.socket
.write(p
) {
294 fn send(&mut self, p
: PacketType
) -> IoResult
<()> {
295 self.socket
.set_timeout(DEFAULT_TIMEOUT
);
296 self.current_timestamp
+= 1;
297 match (Packet
{ t
: p
, timestamp
: self.current_timestamp
}).write(&mut self.socket
, self.variant
) {
298 Err(packet
::WritingError
::IO(e
)) => Err(e
),
303 fn read(&mut self) -> ReadingResult
{
304 fn send_error(ep
: &mut EndPoint
, error_type
: packet
::ErrorType
) {
305 if let Err(e
) = ep
.send(Error(error_type
)) {
306 println!("Unable to send error packet: {}", e
)
310 self.socket
.set_timeout(DEFAULT_TIMEOUT
);
311 match Packet
::read(&mut self.socket
, self.variant
) {
313 if packet
.timestamp
<= self.current_timestamp
{
314 println!("Error, timestamp mismatch, current timestamp: {}, packet received: {}", self.current_timestamp
, packet
);
315 Err(packet
::ReadingError
::InvalidTimestamp
)
317 self.current_timestamp
= packet
.timestamp
+ 1;
321 e @
Err(packet
::ReadingError
::Padding
) => {
322 self.current_timestamp
+= 1;
323 send_error(self, packet
::ErrorType
::Crypt
);
326 e @
Err(packet
::ReadingError
::MACMismatch
) => {
327 self.current_timestamp
+= 1;
328 send_error(self, packet
::ErrorType
::Auth
);