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#[cfg(test)]
use hex;
#[cfg(test)]
use std::fmt;
use byteorder::LittleEndian;
use zerocopy::byteorder::U32;
use zerocopy::{AsBytes, ByteSlice, FromBytes, LayoutVerified};
use super::types::*;
const SIZE_TAG: usize = 16;
const SIZE_X25519_POINT: usize = 32;
const SIZE_TIMESTAMP: usize = 12;
pub const TYPE_INITIATION: u8 = 1;
pub const TYPE_RESPONSE: u8 = 2;
#[repr(C)]
#[derive(Copy, Clone, FromBytes, AsBytes)]
pub struct Initiation {
f_type: U32<LittleEndian>,
pub f_sender: U32<LittleEndian>,
pub f_ephemeral: [u8; SIZE_X25519_POINT],
pub f_static: [u8; SIZE_X25519_POINT],
pub f_static_tag: [u8; SIZE_TAG],
pub f_timestamp: [u8; SIZE_TIMESTAMP],
pub f_timestamp_tag: [u8; SIZE_TAG],
}
impl Default for Initiation {
fn default() -> Self {
Self {
f_type: <U32<LittleEndian>>::new(TYPE_INITIATION as u32),
f_sender: <U32<LittleEndian>>::ZERO,
f_ephemeral: [0u8; SIZE_X25519_POINT],
f_static: [0u8; SIZE_X25519_POINT],
f_static_tag: [0u8; SIZE_TAG],
f_timestamp: [0u8; SIZE_TIMESTAMP],
f_timestamp_tag: [0u8; SIZE_TAG],
}
}
}
impl Initiation {
pub fn parse<B: ByteSlice>(bytes: B) -> Result<LayoutVerified<B, Self>, HandshakeError> {
let msg: LayoutVerified<B, Self> =
LayoutVerified::new(bytes).ok_or(HandshakeError::InvalidMessageFormat)?;
if msg.f_type.get() != (TYPE_INITIATION as u32) {
return Err(HandshakeError::InvalidMessageFormat);
}
Ok(msg)
}
}
#[cfg(test)]
impl fmt::Debug for Initiation {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f,
"MessageInitiation {{ type = {}, sender = {}, ephemeral = {}, static = {}|{}, timestamp = {}|{} }}",
self.f_type.get(),
self.f_sender.get(),
hex::encode(self.f_ephemeral),
hex::encode(self.f_static),
hex::encode(self.f_static_tag),
hex::encode(self.f_timestamp),
hex::encode(self.f_timestamp_tag)
)
}
}
#[cfg(test)]
impl PartialEq for Initiation {
fn eq(&self, other: &Self) -> bool {
self.f_type.get() == other.f_type.get()
&& self.f_sender.get() == other.f_sender.get()
&& self.f_ephemeral[..] == other.f_ephemeral[..]
&& self.f_static[..] == other.f_static[..]
&& self.f_static_tag[..] == other.f_static_tag[..]
&& self.f_timestamp[..] == other.f_timestamp
&& self.f_timestamp_tag[..] == other.f_timestamp_tag
}
}
#[cfg(test)]
impl Eq for Initiation {}
#[repr(C)]
#[derive(Copy, Clone, FromBytes, AsBytes)]
pub struct Response {
f_type: U32<LittleEndian>,
pub f_sender: U32<LittleEndian>,
pub f_receiver: U32<LittleEndian>,
pub f_ephemeral: [u8; SIZE_X25519_POINT],
pub f_empty_tag: [u8; SIZE_TAG],
}
impl Response {
pub fn parse<B: ByteSlice>(bytes: B) -> Result<LayoutVerified<B, Self>, HandshakeError> {
let msg: LayoutVerified<B, Self> =
LayoutVerified::new(bytes).ok_or(HandshakeError::InvalidMessageFormat)?;
if msg.f_type.get() != (TYPE_RESPONSE as u32) {
return Err(HandshakeError::InvalidMessageFormat);
}
Ok(msg)
}
}
impl Default for Response {
fn default() -> Self {
Self {
f_type: <U32<LittleEndian>>::new(TYPE_RESPONSE as u32),
f_sender: <U32<LittleEndian>>::ZERO,
f_receiver: <U32<LittleEndian>>::ZERO,
f_ephemeral: [0u8; SIZE_X25519_POINT],
f_empty_tag: [0u8; SIZE_TAG],
}
}
}
#[cfg(test)]
impl fmt::Debug for Response {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f,
"MessageResponse {{ type = {}, sender = {}, receiver = {}, ephemeral = {}, empty = |{} }}",
self.f_type,
self.f_sender,
self.f_receiver,
hex::encode(self.f_ephemeral),
hex::encode(self.f_empty_tag)
)
}
}
#[cfg(test)]
impl PartialEq for Response {
fn eq(&self, other: &Self) -> bool {
self.f_type == other.f_type
&& self.f_sender == other.f_sender
&& self.f_receiver == other.f_receiver
&& self.f_ephemeral == other.f_ephemeral
&& self.f_empty_tag == other.f_empty_tag
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn message_response_identity() {
let mut msg: Response = Default::default();
msg.f_sender.set(146252);
msg.f_receiver.set(554442);
msg.f_ephemeral = [
0xc1, 0x66, 0x0a, 0x0c, 0xdc, 0x0f, 0x6c, 0x51, 0x0f, 0xc2, 0xcc, 0x51, 0x52, 0x0c,
0xde, 0x1e, 0xf7, 0xf1, 0xca, 0x90, 0x86, 0x72, 0xad, 0x67, 0xea, 0x89, 0x45, 0x44,
0x13, 0x56, 0x52, 0x1f,
];
msg.f_empty_tag = [
0x60, 0x0e, 0x1e, 0x95, 0x41, 0x6b, 0x52, 0x05, 0xa2, 0x09, 0xe1, 0xbf, 0x40, 0x05,
0x2f, 0xde,
];
let buf: Vec<u8> = msg.as_bytes().to_vec();
let msg_p = Response::parse(&buf[..]).unwrap();
assert_eq!(msg, *msg_p.into_ref());
}
#[test]
fn message_initiate_identity() {
let mut msg: Initiation = Default::default();
msg.f_sender.set(575757);
msg.f_ephemeral = [
0xc1, 0x66, 0x0a, 0x0c, 0xdc, 0x0f, 0x6c, 0x51, 0x0f, 0xc2, 0xcc, 0x51, 0x52, 0x0c,
0xde, 0x1e, 0xf7, 0xf1, 0xca, 0x90, 0x86, 0x72, 0xad, 0x67, 0xea, 0x89, 0x45, 0x44,
0x13, 0x56, 0x52, 0x1f,
];
msg.f_static = [
0xdc, 0x33, 0x90, 0x15, 0x8f, 0x82, 0x3e, 0x06, 0x44, 0xa0, 0xde, 0x4c, 0x15, 0x6c,
0x5d, 0xa4, 0x65, 0x99, 0xf6, 0x6c, 0xa1, 0x14, 0x77, 0xf9, 0xeb, 0x6a, 0xec, 0xc3,
0x3c, 0xda, 0x47, 0xe1,
];
msg.f_static_tag = [
0x45, 0xac, 0x8d, 0x43, 0xea, 0x1b, 0x2f, 0x02, 0x45, 0x5d, 0x86, 0x37, 0xee, 0x83,
0x6b, 0x42,
];
msg.f_timestamp = [
0x4f, 0x1c, 0x60, 0xec, 0x0e, 0xf6, 0x36, 0xf0, 0x78, 0x28, 0x57, 0x42,
];
msg.f_timestamp_tag = [
0x60, 0x0e, 0x1e, 0x95, 0x41, 0x6b, 0x52, 0x05, 0xa2, 0x09, 0xe1, 0xbf, 0x40, 0x05,
0x2f, 0xde,
];
let buf: Vec<u8> = msg.as_bytes().to_vec();
let msg_p = Initiation::parse(&buf[..]).unwrap();
assert_eq!(msg, *msg_p.into_ref());
}
}
|
