From: Matt Corallo Date: Sun, 30 Sep 2018 23:33:03 +0000 (-0400) Subject: Use new ChannelError in HTLC-removal msgs, filling out more handling X-Git-Tag: v0.0.12~297^2~2 X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=commitdiff_plain;h=ad77f72ff3ede5b9d6c5f9c91075e712f4e8b6c6;p=rust-lightning Use new ChannelError in HTLC-removal msgs, filling out more handling --- diff --git a/src/ln/channel.rs b/src/ln/channel.rs index 762ecab5b..906d1ffff 100644 --- a/src/ln/channel.rs +++ b/src/ln/channel.rs @@ -1508,38 +1508,38 @@ impl Channel { /// Removes an outbound HTLC which has been commitment_signed by the remote end #[inline] - fn mark_outbound_htlc_removed(&mut self, htlc_id: u64, check_preimage: Option<[u8; 32]>, fail_reason: Option) -> Result<&HTLCSource, HandleError> { + fn mark_outbound_htlc_removed(&mut self, htlc_id: u64, check_preimage: Option<[u8; 32]>, fail_reason: Option) -> Result<&HTLCSource, ChannelError> { for htlc in self.pending_outbound_htlcs.iter_mut() { if htlc.htlc_id == htlc_id { match check_preimage { None => {}, Some(payment_hash) => if payment_hash != htlc.payment_hash { - return Err(HandleError{err: "Remote tried to fulfill HTLC with an incorrect preimage", action: None}); + return Err(ChannelError::Close("Remote tried to fulfill HTLC with an incorrect preimage")); } }; match htlc.state { OutboundHTLCState::LocalAnnounced => - return Err(HandleError{err: "Remote tried to fulfill HTLC before it had been committed", action: None}), + return Err(ChannelError::Close("Remote tried to fulfill HTLC before it had been committed")), OutboundHTLCState::Committed => { htlc.state = OutboundHTLCState::RemoteRemoved; htlc.fail_reason = fail_reason; }, OutboundHTLCState::AwaitingRemoteRevokeToRemove | OutboundHTLCState::AwaitingRemovedRemoteRevoke | OutboundHTLCState::RemoteRemoved => - return Err(HandleError{err: "Remote tried to fulfill HTLC that they'd already fulfilled", action: None}), + return Err(ChannelError::Close("Remote tried to fulfill HTLC that they'd already fulfilled")), } return Ok(&htlc.source); } } - Err(HandleError{err: "Remote tried to fulfill/fail an HTLC we couldn't find", action: None}) + Err(ChannelError::Close("Remote tried to fulfill/fail an HTLC we couldn't find")) } - pub fn update_fulfill_htlc(&mut self, msg: &msgs::UpdateFulfillHTLC) -> Result<&HTLCSource, HandleError> { + pub fn update_fulfill_htlc(&mut self, msg: &msgs::UpdateFulfillHTLC) -> Result<&HTLCSource, ChannelError> { if (self.channel_state & (ChannelState::ChannelFunded as u32)) != (ChannelState::ChannelFunded as u32) { - return Err(HandleError{err: "Got add HTLC message when channel was not in an operational state", action: None}); + return Err(ChannelError::Close("Got fulfill HTLC message when channel was not in an operational state")); } if self.channel_state & (ChannelState::PeerDisconnected as u32) == ChannelState::PeerDisconnected as u32 { - return Err(HandleError{err: "Peer sent update_fulfill_htlc when we needed a channel_reestablish", action: Some(msgs::ErrorAction::SendErrorMessage{msg: msgs::ErrorMessage{data: "Peer sent update_fulfill_htlc when we needed a channel_reestablish".to_string(), channel_id: msg.channel_id}})}); + return Err(ChannelError::Close("Peer sent update_fulfill_htlc when we needed a channel_reestablish")); } let mut sha = Sha256::new(); @@ -1550,23 +1550,23 @@ impl Channel { self.mark_outbound_htlc_removed(msg.htlc_id, Some(payment_hash), None) } - pub fn update_fail_htlc(&mut self, msg: &msgs::UpdateFailHTLC, fail_reason: HTLCFailReason) -> Result<&HTLCSource, HandleError> { + pub fn update_fail_htlc(&mut self, msg: &msgs::UpdateFailHTLC, fail_reason: HTLCFailReason) -> Result<&HTLCSource, ChannelError> { if (self.channel_state & (ChannelState::ChannelFunded as u32)) != (ChannelState::ChannelFunded as u32) { - return Err(HandleError{err: "Got add HTLC message when channel was not in an operational state", action: None}); + return Err(ChannelError::Close("Got fail HTLC message when channel was not in an operational state")); } if self.channel_state & (ChannelState::PeerDisconnected as u32) == ChannelState::PeerDisconnected as u32 { - return Err(HandleError{err: "Peer sent update_fail_htlc when we needed a channel_reestablish", action: Some(msgs::ErrorAction::SendErrorMessage{msg: msgs::ErrorMessage{data: "Peer sent update_fail_htlc when we needed a channel_reestablish".to_string(), channel_id: msg.channel_id}})}); + return Err(ChannelError::Close("Peer sent update_fail_htlc when we needed a channel_reestablish")); } self.mark_outbound_htlc_removed(msg.htlc_id, None, Some(fail_reason)) } - pub fn update_fail_malformed_htlc<'a>(&mut self, msg: &msgs::UpdateFailMalformedHTLC, fail_reason: HTLCFailReason) -> Result<&HTLCSource, HandleError> { + pub fn update_fail_malformed_htlc<'a>(&mut self, msg: &msgs::UpdateFailMalformedHTLC, fail_reason: HTLCFailReason) -> Result<&HTLCSource, ChannelError> { if (self.channel_state & (ChannelState::ChannelFunded as u32)) != (ChannelState::ChannelFunded as u32) { - return Err(HandleError{err: "Got add HTLC message when channel was not in an operational state", action: None}); + return Err(ChannelError::Close("Got fail malformed HTLC message when channel was not in an operational state")); } if self.channel_state & (ChannelState::PeerDisconnected as u32) == ChannelState::PeerDisconnected as u32 { - return Err(HandleError{err: "Peer sent update_fail_malformed_htlc when we needed a channel_reestablish", action: Some(msgs::ErrorAction::SendErrorMessage{msg: msgs::ErrorMessage{data: "Peer sent update_fail_malformed_htlc when we needed a channel_reestablish".to_string(), channel_id: msg.channel_id}})}); + return Err(ChannelError::Close("Peer sent update_fail_malformed_htlc when we needed a channel_reestablish")); } self.mark_outbound_htlc_removed(msg.htlc_id, None, Some(fail_reason)) diff --git a/src/ln/channelmanager.rs b/src/ln/channelmanager.rs index e3c717975..564905b00 100644 --- a/src/ln/channelmanager.rs +++ b/src/ln/channelmanager.rs @@ -1737,7 +1737,8 @@ impl ChannelManager { //TODO: here and below MsgHandleErrInternal, #153 case return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!", msg.channel_id)); } - chan.update_fulfill_htlc(&msg).map_err(|e| MsgHandleErrInternal::from_maybe_close(e))?.clone() + chan.update_fulfill_htlc(&msg) + .map_err(|e| MsgHandleErrInternal::from_chan_maybe_close(e, msg.channel_id))?.clone() }, None => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel", msg.channel_id)) }; @@ -1753,7 +1754,8 @@ impl ChannelManager { //TODO: here and below MsgHandleErrInternal, #153 case return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!", msg.channel_id)); } - chan.update_fail_htlc(&msg, HTLCFailReason::ErrorPacket { err: msg.reason.clone() }).map_err(|e| MsgHandleErrInternal::from_maybe_close(e)) + chan.update_fail_htlc(&msg, HTLCFailReason::ErrorPacket { err: msg.reason.clone() }) + .map_err(|e| MsgHandleErrInternal::from_chan_maybe_close(e, msg.channel_id)) }, None => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel", msg.channel_id)) }?; @@ -1825,7 +1827,11 @@ impl ChannelManager { //TODO: here and below MsgHandleErrInternal, #153 case return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!", msg.channel_id)); } - chan.update_fail_malformed_htlc(&msg, HTLCFailReason::Reason { failure_code: msg.failure_code, data: Vec::new() }).map_err(|e| MsgHandleErrInternal::from_maybe_close(e))?; + if (msg.failure_code & 0x8000) != 0 { + return Err(MsgHandleErrInternal::send_err_msg_close_chan("Got update_fail_malformed_htlc with BADONION set", msg.channel_id)); + } + chan.update_fail_malformed_htlc(&msg, HTLCFailReason::Reason { failure_code: msg.failure_code, data: Vec::new() }) + .map_err(|e| MsgHandleErrInternal::from_chan_maybe_close(e, msg.channel_id))?; Ok(()) }, None => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel", msg.channel_id))