Use alloc for no_std builds

[rust-lightning] / lightning / src / ln / msgs.rs

diff --git a/lightning/src/ln/msgs.rs b/lightning/src/ln/msgs.rs
index be99596becd82d4627c21c229d9b6172ac385615..03897324150a2ffc8150502c184ff2c71367a916 100644 (file)
--- a/lightning/src/ln/msgs.rs
+++ b/lightning/src/ln/msgs.rs
@@ -32,8 +32,9 @@ use bitcoin::hash_types::{Txid, BlockHash};
 
 use ln::features::{ChannelFeatures, InitFeatures, NodeFeatures};
 
-use std::{cmp, fmt};
-use std::fmt::Debug;
+use prelude::*;
+use core::{cmp, fmt};
+use core::fmt::Debug;
 use std::io::Read;
 
 use util::events::MessageSendEventsProvider;
@@ -63,6 +64,8 @@ pub enum DecodeError {
        /// Error from std::io
        Io(/// (C-not exported) as ErrorKind doesn't have a reasonable mapping
         ::std::io::ErrorKind),
+       /// The message included zlib-compressed values, which we don't support.
+       UnsupportedCompression,
 }
 
 /// An init message to be sent or received from a peer
@@ -865,6 +868,7 @@ pub trait RoutingMessageHandler : MessageSendEventsProvider {
 }
 
 mod fuzzy_internal_msgs {
+       use prelude::*;
        use ln::PaymentSecret;
 
        // These types aren't intended to be pub, but are exposed for direct fuzzing (as we deserialize
@@ -953,6 +957,7 @@ impl fmt::Display for DecodeError {
                        DecodeError::ShortRead => f.write_str("Packet extended beyond the provided bytes"),
                        DecodeError::BadLengthDescriptor => f.write_str("A length descriptor in the packet didn't describe the later data correctly"),
                        DecodeError::Io(ref e) => e.fmt(f),
+                       DecodeError::UnsupportedCompression => f.write_str("We don't support receiving messages with zlib-compressed fields"),
                }
        }
 }
@@ -1282,20 +1287,17 @@ impl Writeable for OnionHopData {
                                        (2, HighZeroBytesDroppedVarInt(self.amt_to_forward)),
                                        (4, HighZeroBytesDroppedVarInt(self.outgoing_cltv_value)),
                                        (6, short_channel_id)
-                               });
-                       },
-                       OnionHopDataFormat::FinalNode { payment_data: Some(ref final_data) } => {
-                               if final_data.total_msat > MAX_VALUE_MSAT { panic!("We should never be sending infinite/overflow onion payments"); }
-                               encode_varint_length_prefixed_tlv!(w, {
-                                       (2, HighZeroBytesDroppedVarInt(self.amt_to_forward)),
-                                       (4, HighZeroBytesDroppedVarInt(self.outgoing_cltv_value)),
-                                       (8, final_data)
-                               });
+                               }, { });
                        },
-                       OnionHopDataFormat::FinalNode { payment_data: None } => {
+                       OnionHopDataFormat::FinalNode { ref payment_data } => {
+                               if let Some(final_data) = payment_data {
+                                       if final_data.total_msat > MAX_VALUE_MSAT { panic!("We should never be sending infinite/overflow onion payments"); }
+                               }
                                encode_varint_length_prefixed_tlv!(w, {
                                        (2, HighZeroBytesDroppedVarInt(self.amt_to_forward)),
                                        (4, HighZeroBytesDroppedVarInt(self.outgoing_cltv_value))
+                               }, {
+                                       (8, payment_data)
                                });
                        },
                }
@@ -1634,17 +1636,18 @@ impl Readable for QueryShortChannelIds {
        fn read<R: Read>(r: &mut R) -> Result<Self, DecodeError> {
                let chain_hash: BlockHash = Readable::read(r)?;
 
-               // We expect the encoding_len to always includes the 1-byte
-               // encoding_type and that short_channel_ids are 8-bytes each
                let encoding_len: u16 = Readable::read(r)?;
-               if encoding_len == 0 || (encoding_len - 1) % 8 != 0 {
-                       return Err(DecodeError::InvalidValue);
-               }
+               let encoding_type: u8 = Readable::read(r)?;
 
                // Must be encoding_type=0 uncompressed serialization. We do not
                // support encoding_type=1 zlib serialization.
-               let encoding_type: u8 = Readable::read(r)?;
                if encoding_type != EncodingType::Uncompressed as u8 {
+                       return Err(DecodeError::UnsupportedCompression);
+               }
+
+               // We expect the encoding_len to always includes the 1-byte
+               // encoding_type and that short_channel_ids are 8-bytes each
+               if encoding_len == 0 || (encoding_len - 1) % 8 != 0 {
                        return Err(DecodeError::InvalidValue);
                }
 
@@ -1746,17 +1749,18 @@ impl Readable for ReplyChannelRange {
                let number_of_blocks: u32 = Readable::read(r)?;
                let sync_complete: bool = Readable::read(r)?;
 
-               // We expect the encoding_len to always includes the 1-byte
-               // encoding_type and that short_channel_ids are 8-bytes each
                let encoding_len: u16 = Readable::read(r)?;
-               if encoding_len == 0 || (encoding_len - 1) % 8 != 0 {
-                       return Err(DecodeError::InvalidValue);
-               }
+               let encoding_type: u8 = Readable::read(r)?;
 
                // Must be encoding_type=0 uncompressed serialization. We do not
                // support encoding_type=1 zlib serialization.
-               let encoding_type: u8 = Readable::read(r)?;
                if encoding_type != EncodingType::Uncompressed as u8 {
+                       return Err(DecodeError::UnsupportedCompression);
+               }
+
+               // We expect the encoding_len to always includes the 1-byte
+               // encoding_type and that short_channel_ids are 8-bytes each
+               if encoding_len == 0 || (encoding_len - 1) % 8 != 0 {
                        return Err(DecodeError::InvalidValue);
                }
 
@@ -1839,6 +1843,7 @@ mod tests {
        use bitcoin::secp256k1::key::{PublicKey,SecretKey};
        use bitcoin::secp256k1::{Secp256k1, Message};
 
+       use prelude::*;
        use std::io::Cursor;
 
        #[test]