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use chrono::prelude::*;
use futures::SinkExt;
use tokio::io::AsyncBufReadExt;
fn decode_line(data: &str, host: &str) -> Result<super::proto::DACResponse, ()> {
let mut parts = data.split(',').collect::<Vec<_>>();
if parts.len() < 2 {
error!("Invalid syntax from {}: expected at least two parts", host);
Err(())
} else {
parts.reverse();
let domain = parts.pop().unwrap();
let registered = parts.pop().unwrap();
match registered {
"C" => {
if parts.len() != 4 {
error!(
"Invalid syntax from {}: expected at 6 parts for a usage response",
host
);
Err(())
} else {
let limit_60_const = parts.pop().unwrap();
let limit_60 = parts.pop().unwrap();
let limit_24_const = parts.pop().unwrap();
let limit_24 = parts.pop().unwrap();
if limit_60_const != "60" || limit_24_const != "86400" {
error!("Invalid syntax from {}: invalid usage response", host);
Err(())
} else {
let limit_60 = match limit_60.parse::<u64>() {
Ok(l) => l,
Err(_) => {
error!("Invalid syntax from {}: invalid int", host);
return Err(());
}
};
let limit_24 = match limit_24.parse::<u64>() {
Ok(l) => l,
Err(_) => {
error!("Invalid syntax from {}: invalid int", host);
return Err(());
}
};
let usage = super::proto::Usage {
usage_60: limit_60,
usage_24: limit_24,
};
match domain {
"#usage" => Ok(super::proto::DACResponse::Usage(usage)),
"#limits" => Ok(super::proto::DACResponse::Limits(usage)),
o => {
error!("Invalid syntax from {}: invalid domain for a usage response ({})", host, o);
Err(())
}
}
}
}
}
"B" => {
if parts.len() != 1 {
error!(
"Invalid syntax from {}: expected 3 parts for an AUB response",
host
);
Err(())
} else {
let delay = parts.pop().unwrap();
let delay = match delay.parse::<u64>() {
Ok(l) => l,
Err(_) => {
error!("Invalid syntax from {}: invalid int", host);
return Err(());
}
};
Ok(super::proto::DACResponse::Aub(super::proto::Aub {
domain: domain.to_string(),
delay,
}))
}
}
"I" => {
error!("Invalid syntax error received from {}", host);
Err(())
}
r => {
match parts.len() {
0 => {
let registered = match r {
"Y" => true,
"N" => false,
_ => {
error!("Invalid syntax from {}: invalid registered status", host);
return Err(());
}
};
Ok(super::proto::DACResponse::DomainRT(
super::proto::DomainRT {
domain: domain.to_string(),
registered,
detagged: false,
created: Utc.ymd(1970, 1, 1),
expiry: Utc.ymd(1970, 1, 1),
tag: String::default(),
},
))
}
4 => {
let detagged = parts.pop().unwrap();
let created = parts.pop().unwrap();
let expiry = parts.pop().unwrap();
let tag = parts.pop().unwrap();
let registered = match r {
"Y" => true,
"N" => false,
_ => {
error!("Invalid syntax from {}: invalid registered status", host);
return Err(());
}
};
let detagged = match detagged {
"Y" => true,
"N" => false,
_ => {
error!("Invalid syntax from {}: invalid bool", host);
return Err(());
}
};
let created = match chrono::NaiveDate::parse_from_str(created, "%Y-%m-%d") {
Ok(d) => d,
Err(e) => {
error!("Invalid syntax from {}: invalid date {}", host, e);
return Err(());
}
};
let expiry = match chrono::NaiveDate::parse_from_str(expiry, "%Y-%m-%d") {
Ok(d) => d,
Err(e) => {
error!("Invalid syntax from {}: invalid date {}", host, e);
return Err(());
}
};
let created = chrono::Date::from_utc(created, chrono::offset::Utc);
let expiry = chrono::Date::from_utc(expiry, chrono::offset::Utc);
Ok(super::proto::DACResponse::DomainRT(
super::proto::DomainRT {
domain: domain.to_string(),
registered,
detagged,
created,
expiry,
tag: tag.to_string(),
},
))
}
6 => {
let detagged = parts.pop().unwrap();
let suspended = parts.pop().unwrap();
let created = parts.pop().unwrap();
let expiry = parts.pop().unwrap();
let status = parts.pop().unwrap();
let tag = parts.pop().unwrap();
let registered = match r {
"Y" => super::proto::DomainRegistered::Registered,
"N" => super::proto::DomainRegistered::Available,
"E" => super::proto::DomainRegistered::NotWithinRegistry,
"R" => super::proto::DomainRegistered::RulesPrevent,
_ => {
error!("Invalid syntax from {}: invalid registered status", host);
return Err(());
}
};
let detagged = match detagged {
"Y" => true,
"N" => false,
_ => {
error!("Invalid syntax from {}: invalid bool", host);
return Err(());
}
};
let suspended = match suspended {
"Y" => true,
"N" => false,
_ => {
error!("Invalid syntax from {}: invalid bool", host);
return Err(());
}
};
let created = match chrono::NaiveDate::parse_from_str(created, "%Y-%m-%d") {
Ok(d) => d,
Err(e) => {
error!("Invalid syntax from {}: invalid date {}", host, e);
return Err(());
}
};
let expiry = match chrono::NaiveDate::parse_from_str(expiry, "%Y-%m-%d") {
Ok(d) => d,
Err(e) => {
error!("Invalid syntax from {}: invalid date {}", host, e);
return Err(());
}
};
let created = chrono::Date::from_utc(created, chrono::offset::Utc);
let expiry = chrono::Date::from_utc(expiry, chrono::offset::Utc);
let status = match status {
"0" => super::proto::DomainStatus::Unknown,
"2" => super::proto::DomainStatus::RegisteredUntilExpiry,
"4" => super::proto::DomainStatus::RenewalRequired,
"7" => super::proto::DomainStatus::NoLongerRequired,
_ => {
error!("Invalid syntax from {}: invalid status", host);
return Err(());
}
};
Ok(super::proto::DACResponse::DomainTD(
super::proto::DomainTD {
domain: domain.to_string(),
registered,
detagged,
suspended,
created,
expiry,
status,
tag: tag.to_string(),
},
))
}
_ => {
error!("Invalid syntax from {}: expected 2, 6 or 8 parts for a domain response", host);
Err(())
}
}
}
}
}
}
async fn recv_msg<R: std::marker::Unpin + tokio::io::AsyncBufRead>(
lines: &mut tokio::io::Lines<R>,
host: &str,
) -> Result<super::proto::DACResponse, bool> {
let line = match lines.next_line().await {
Ok(Some(l)) => l,
Ok(None) => {
warn!("{} has closed the connection", host);
return Err(true);
}
Err(err) => {
return Err(match err.kind() {
std::io::ErrorKind::UnexpectedEof => {
warn!("{} has closed the connection", host);
true
}
_ => {
error!("Error reading next data line from {}: {}", host, err);
false
}
});
}
};
debug!("Received message from {} with contents: {}", host, line);
let msg = decode_line(&line, host).map_err(|_| false)?;
Ok(msg)
}
pub(super) struct ClientReceiver<R: std::marker::Unpin + tokio::io::AsyncBufRead> {
pub host: String,
pub reader: R,
}
impl<R: 'static + std::marker::Unpin + tokio::io::AsyncBufRead + std::marker::Send>
ClientReceiver<R>
{
pub fn run(self) -> futures::channel::mpsc::Receiver<Result<super::proto::DACResponse, bool>> {
let (mut sender, receiver) =
futures::channel::mpsc::channel::<Result<super::proto::DACResponse, bool>>(16);
tokio::spawn(async move {
let mut lines = self.reader.lines();
loop {
let msg = recv_msg(&mut lines, &self.host).await;
let is_close = if let Err(c) = &msg { *c } else { false };
match sender.send(msg).await {
Ok(_) => {}
Err(_) => break,
}
if is_close {
break;
}
}
});
receiver
}
}
