Added minimum�m depth checking to accept message

Author: SWvheerden

src/ln/channel.rs

@@ -1263,7 +1263,10 @@ impl Channel {
 		if msg.max_accepted_htlcs > 483 {
 			return_error_message!("max_accpted_htlcs > 483");
 		}
-
+		//Optional user definined limits
+		if msg.minimum_depth > self.config.channel_limits.minimum_depth {
+			return_error_message!("We consider the minimum depth to be unreasonably large");
+		}
 		self.channel_monitor.set_their_base_keys(&msg.htlc_basepoint, &msg.delayed_payment_basepoint);
 
 		self.their_dust_limit_satoshis = msg.dust_limit_satoshis;

src/util/configurations.rs

@@ -34,6 +34,8 @@ pub struct ChannelLimits{
 	pub max_accepted_htlcs : u16,
 	/// min allowed dust_limit_satashis
 	pub dust_limit_satoshis : u64,
+	///minimum depth to a number of blocks that is considered reasonable to avoid double-spending of the funding transaction
+	pub  minimum_depth : u32,
 }
 
 impl ChannelLimits {
@@ -46,6 +48,7 @@ impl ChannelLimits {
 			channel_reserve_satoshis : <u64>::max_value(),
 			max_accepted_htlcs : 0,
 			dust_limit_satoshis : 0,
+			minimum_depth : <u32>::max_value(),
 		}
 	}
 }