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use super::*;
use std::str;
use crate::toxid::{NoSpam, NOSPAMBYTES};
const MAX_FRIEND_REQUEST_MSG_SIZE: usize = MAX_ONION_CLIENT_DATA_SIZE - (1 + NOSPAMBYTES);
#[derive(Clone, Debug, Eq, PartialEq)]
pub struct FriendRequest {
nospam: NoSpam,
msg: String,
}
impl FriendRequest {
pub fn new(nospam: NoSpam, msg: String) -> Self {
FriendRequest {
nospam,
msg,
}
}
}
impl ToBytes for FriendRequest {
fn to_bytes<'a>(&self, buf: (&'a mut [u8], usize)) -> Result<(&'a mut [u8], usize), GenError> {
do_gen!(buf,
gen_be_u8!(0x20) >>
gen_slice!(self.nospam.0) >>
gen_cond!(self.msg.len() > MAX_FRIEND_REQUEST_MSG_SIZE || self.msg.is_empty(), |buf| gen_error(buf, 0)) >>
gen_slice!(self.msg.as_bytes())
)
}
}
impl FromBytes for FriendRequest {
named!(from_bytes<FriendRequest>, do_parse!(
tag!(&[0x20][..]) >>
nospam: call!(NoSpam::from_bytes) >>
msg: map_res!(verify!(rest, |msg: &[u8]| msg.len() <= MAX_FRIEND_REQUEST_MSG_SIZE && !msg.is_empty()), str::from_utf8) >>
(FriendRequest {
nospam,
msg: msg.to_string(),
})
));
}
#[cfg(test)]
mod tests {
use super::*;
encode_decode_test!(
tox_crypto::crypto_init().unwrap(),
friend_req_encode_decode,
FriendRequest {
nospam: NoSpam::random(),
msg: "1234".to_owned(),
}
);
#[test]
fn friend_request_from_bytes_encoding_error() {
let err_string = vec![0, 159, 146, 150];
let nospam = NoSpam::random();
let mut friend_req = vec![0x20];
friend_req.extend_from_slice(&nospam.0);
friend_req.extend(err_string);
assert!(FriendRequest::from_bytes(&friend_req).is_err());
}
#[test]
fn friend_request_from_bytes_overflow() {
let large_string = vec![32; MAX_FRIEND_REQUEST_MSG_SIZE + 1];
let nospam = NoSpam::random();
let mut friend_req = vec![0x20];
friend_req.extend_from_slice(&nospam.0);
friend_req.extend(large_string);
assert!(FriendRequest::from_bytes(&friend_req).is_err());
}
#[test]
fn friend_request_to_bytes_overflow() {
let large_string = String::from_utf8(vec![32u8; MAX_FRIEND_REQUEST_MSG_SIZE + 1]).unwrap();
let friend_req = FriendRequest {
nospam: NoSpam::random(),
msg: large_string
};
let mut buf = [0; MAX_ONION_CLIENT_DATA_SIZE + 1];
assert!(friend_req.to_bytes((&mut buf, 0)).is_err());
}
#[test]
fn friend_request_from_bytes_underflow() {
let nospam = NoSpam::random();
let mut friend_req = vec![0x20];
friend_req.extend_from_slice(&nospam.0);
assert!(FriendRequest::from_bytes(&friend_req).is_err());
}
#[test]
fn friend_request_to_bytes_underflow() {
let friend_req = FriendRequest {
nospam: NoSpam::random(),
msg: "".to_string(),
};
let mut buf = [0; MAX_ONION_CLIENT_DATA_SIZE];
assert!(friend_req.to_bytes((&mut buf, 0)).is_err());
}
}