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Check validity of dust_limit_satoshis in remote messages

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This commit is contained in:
Matt Corallo 2018-03-22 17:40:53 -04:00
parent 1bb4f44bd6
commit e9b1af277f
1 changed files with 6 additions and 2 deletions
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8
src/ln/channel.rs
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@ -366,7 +366,9 @@ impl Channel {
if msg.push_msat > (msg.funding_satoshis - msg.channel_reserve_satoshis) * 1000 {
return Err(HandleError{err: "push_msat more than highest possible value", msg: None});
}
//TODO Check if dust_limit is sane?
if msg.dust_limit_satoshis > 21000000 * 100000000 {
return Err(HandleError{err: "Peer never wants payout outputs?", msg: None});
}
if msg.max_htlc_value_in_flight_msat > msg.funding_satoshis * 1000 {
return Err(HandleError{err: "Bogus max_htlc_value_in_flight_satoshis", msg: None});
}
@ -826,13 +828,15 @@ impl Channel {
pub fn accept_channel(&mut self, msg: &msgs::AcceptChannel) -> Result<(), HandleError> {
// Check sanity of message fields:
//TODO Check if dust_limit is sane?
if !self.channel_outbound {
return Err(HandleError{err: "Got an accept_channel message from an inbound peer", msg: None});
}
if self.channel_state != ChannelState::OurInitSent as u32 {
return Err(HandleError{err: "Got an accept_channel message at a strange time", msg: None});
}
if msg.dust_limit_satoshis > 21000000 * 100000000 {
return Err(HandleError{err: "Peer never wants payout outputs?", msg: None});
}
if msg.max_htlc_value_in_flight_msat > self.channel_value_satoshis * 1000 {
return Err(HandleError{err: "Bogus max_htlc_value_in_flight_satoshis", msg: None});
}