add fluffy block handler

binaries/cuprated/src/blockchain.rs

@@ -22,12 +22,14 @@ mod manager;
 mod syncer;
 mod types;
 
+use crate::blockchain::free::INCOMING_BLOCK_TX;
 use manager::BlockchainManager;
 use types::{
     ChainService, ConcreteBlockVerifierService, ConcreteTxVerifierService,
     ConsensusBlockchainReadHandle,
 };
-use crate::blockchain::free::INCOMING_BLOCK_TX;
+
+pub use free::{handle_incoming_block, IncomingBlockError};
 
 /// Checks if the genesis block is in the blockchain and adds it if not.
 pub async fn check_add_genesis(

binaries/cuprated/src/blockchain/free.rs

@@ -1,3 +1,4 @@
+use crate::blockchain::manager::commands::BlockchainManagerCommand;
 use cuprate_blockchain::service::BlockchainReadHandle;
 use cuprate_consensus::transactions::new_tx_verification_data;
 use cuprate_helper::cast::usize_to_u64;
@@ -10,14 +11,13 @@ use std::collections::HashMap;
 use std::sync::OnceLock;
 use tokio::sync::{mpsc, oneshot};
 use tower::{Service, ServiceExt};
-use crate::blockchain::manager::commands::BlockchainManagerCommand;
 
 pub static INCOMING_BLOCK_TX: OnceLock<mpsc::Sender<BlockchainManagerCommand>> = OnceLock::new();
 
 #[derive(Debug, thiserror::Error)]
 pub enum IncomingBlockError {
     #[error("Unknown transactions in block.")]
-    UnknownTransactions(Vec<u64>),
+    UnknownTransactions([u8; 32], Vec<u64>),
     #[error("The block has an unknown parent.")]
     Orphan,
     #[error(transparent)]
@@ -29,7 +29,10 @@ pub async fn handle_incoming_block(
     given_txs: Vec<Transaction>,
     blockchain_read_handle: &mut BlockchainReadHandle,
 ) -> Result<bool, IncomingBlockError> {
-    if !block_exists(block.header.previous, blockchain_read_handle).await.expect("TODO") {
+    if !block_exists(block.header.previous, blockchain_read_handle)
+        .await
+        .expect("TODO")
+    {
         return Err(IncomingBlockError::Orphan);
     }
 
@@ -45,6 +48,7 @@ pub async fn handle_incoming_block(
     // TODO: Get transactions from the tx pool first.
     if given_txs.len() != block.transactions.len() {
         return Err(IncomingBlockError::UnknownTransactions(
+            block_hash,
             (0..usize_to_u64(block.transactions.len())).collect(),
         ));
     }
@@ -73,7 +77,10 @@ pub async fn handle_incoming_block(
         .await
         .expect("TODO: don't actually panic here");
 
-    response_rx.await.unwrap().map_err(IncomingBlockError::InvalidBlock)
+    response_rx
+        .await
+        .unwrap()
+        .map_err(IncomingBlockError::InvalidBlock)
 }
 
 async fn block_exists(

binaries/cuprated/src/blockchain/manager.rs

@@ -1,6 +1,7 @@
-mod handler;
 pub(super) mod commands;
+mod handler;
 
+use crate::blockchain::manager::commands::BlockchainManagerCommand;
 use crate::blockchain::types::ConsensusBlockchainReadHandle;
 use cuprate_blockchain::service::{BlockchainReadHandle, BlockchainWriteHandle};
 use cuprate_consensus::context::RawBlockChainContext;
@@ -23,7 +24,6 @@ use tokio::sync::{oneshot, Notify};
 use tower::{Service, ServiceExt};
 use tracing::error;
 use tracing_subscriber::fmt::time::FormatTime;
-use crate::blockchain::manager::commands::BlockchainManagerCommand;
 
 pub struct BlockchainManager {
     blockchain_write_handle: BlockchainWriteHandle,

binaries/cuprated/src/blockchain/manager/commands.rs

@@ -14,4 +14,3 @@ pub enum BlockchainManagerCommand {
 
     PopBlocks,
 }
-

binaries/cuprated/src/blockchain/manager/handler.rs

@@ -20,8 +20,8 @@ use cuprate_types::{
     AltBlockInformation, HardFork, TransactionVerificationData, VerifiedBlockInformation,
 };
 
-use crate::{blockchain::types::ConsensusBlockchainReadHandle, signals::REORG_LOCK};
 use crate::blockchain::manager::commands::BlockchainManagerCommand;
+use crate::{blockchain::types::ConsensusBlockchainReadHandle, signals::REORG_LOCK};
 
 impl super::BlockchainManager {
     pub async fn handle_command(&mut self, command: BlockchainManagerCommand) {
@@ -29,13 +29,13 @@ impl super::BlockchainManager {
             BlockchainManagerCommand::AddBlock {
                 block,
                 prepped_txs,
-                response_tx
+                response_tx,
             } => {
                 let res = self.handle_incoming_block(block, prepped_txs).await;
 
                 drop(response_tx.send(res));
             }
-            BlockchainManagerCommand::PopBlocks => todo!()
+            BlockchainManagerCommand::PopBlocks => todo!(),
         }
     }
 

binaries/cuprated/src/p2p/request_handler.rs

@@ -2,17 +2,24 @@ use bytes::Bytes;
 use cuprate_p2p_core::{ProtocolRequest, ProtocolResponse};
 use futures::future::BoxFuture;
 use futures::FutureExt;
+use monero_serai::block::Block;
+use monero_serai::transaction::Transaction;
+use rayon::prelude::*;
 use std::task::{Context, Poll};
 use tower::{Service, ServiceExt};
 use tracing::trace;
 
+use crate::blockchain::{handle_incoming_block, IncomingBlockError};
 use cuprate_blockchain::service::BlockchainReadHandle;
+use cuprate_consensus::transactions::new_tx_verification_data;
+use cuprate_fixed_bytes::ByteArray;
+use cuprate_helper::asynch::rayon_spawn_async;
 use cuprate_helper::cast::usize_to_u64;
 use cuprate_helper::map::split_u128_into_low_high_bits;
 use cuprate_p2p::constants::{MAX_BLOCKCHAIN_SUPPLEMENT_LEN, MAX_BLOCK_BATCH_LEN};
 use cuprate_types::blockchain::{BlockchainReadRequest, BlockchainResponse};
 use cuprate_types::BlockCompleteEntry;
-use cuprate_wire::protocol::{ChainRequest, ChainResponse, GetObjectsRequest, GetObjectsResponse};
+use cuprate_wire::protocol::{ChainRequest, ChainResponse, FluffyMissingTransactionsRequest, GetObjectsRequest, GetObjectsResponse, NewFluffyBlock};
 
 #[derive(Clone)]
 pub struct P2pProtocolRequestHandler {
@@ -39,7 +46,7 @@ impl Service<ProtocolRequest> for P2pProtocolRequestHandler {
             ProtocolRequest::FluffyMissingTxs(_) => async { Ok(ProtocolResponse::NA) }.boxed(),
             ProtocolRequest::GetTxPoolCompliment(_) => async { Ok(ProtocolResponse::NA) }.boxed(),
             ProtocolRequest::NewBlock(_) => async { Ok(ProtocolResponse::NA) }.boxed(),
-            ProtocolRequest::NewFluffyBlock(_) => async { Ok(ProtocolResponse::NA) }.boxed(),
+            ProtocolRequest::NewFluffyBlock(block) => new_fluffy_block(self.blockchain_read_handle.clone(), block).boxed(),
             ProtocolRequest::NewTransactions(_) => async { Ok(ProtocolResponse::NA) }.boxed(),
         }
     }
@@ -125,3 +132,42 @@ async fn get_chain(
         first_block: first_missing_block.map_or(Bytes::new(), Bytes::from),
     }))
 }
+
+async fn new_fluffy_block(
+    mut blockchain_read_handle: BlockchainReadHandle,
+    incoming_block: NewFluffyBlock,
+) -> Result<ProtocolResponse, tower::BoxError> {
+    let peer_blockchain_height = incoming_block.current_blockchain_height;
+
+    let (block, txs) = rayon_spawn_async(move || {
+        let block = Block::read(&mut incoming_block.b.block.as_ref())?;
+        let txs = incoming_block
+            .b
+            .txs
+            .take_normal()
+            .expect("TODO")
+            .into_par_iter()
+            .map(|tx| {
+                let tx = Transaction::read(&mut tx.as_ref())?;
+                Ok(tx)
+            })
+            .collect::<Result<_, tower::BoxError>>()?;
+
+        Ok::<_, tower::BoxError>((block, txs))
+    })
+    .await?;
+
+    let res = handle_incoming_block(block, txs, &mut blockchain_read_handle).await;
+    
+    match res { 
+        Err(IncomingBlockError::UnknownTransactions(block_hash, tx_indexes)) => {
+            return Ok(ProtocolResponse::FluffyMissingTxs(FluffyMissingTransactionsRequest{
+                block_hash: ByteArray::from(block_hash),
+                current_blockchain_height: peer_blockchain_height,
+                missing_tx_indices: tx_indexes,
+            }))
+        }
+        Err(IncomingBlockError::InvalidBlock(e)) => Err(e)?,
+        Err(IncomingBlockError::Orphan) | Ok(_) => Ok(ProtocolResponse::NA),
+    }
+}

p2p/p2p-core/src/protocol.rs

@@ -116,6 +116,7 @@ pub enum ProtocolResponse {
     GetChain(ChainResponse),
     NewFluffyBlock(NewFluffyBlock),
     NewTransactions(NewTransactions),
+    FluffyMissingTxs(FluffyMissingTransactionsRequest),
     NA,
 }
 
@@ -139,6 +140,7 @@ impl PeerResponse {
                 ProtocolResponse::GetChain(_) => MessageID::GetChain,
                 ProtocolResponse::NewFluffyBlock(_) => MessageID::NewBlock,
                 ProtocolResponse::NewTransactions(_) => MessageID::NewFluffyBlock,
+                ProtocolResponse::FluffyMissingTxs(_) => MessageID::FluffyMissingTxs,
 
                 ProtocolResponse::NA => return None,
             },

p2p/p2p-core/src/protocol/try_from.rs

@@ -75,6 +75,7 @@ impl TryFrom<ProtocolResponse> for ProtocolMessage {
             ProtocolResponse::NewFluffyBlock(val) => ProtocolMessage::NewFluffyBlock(val),
             ProtocolResponse::GetChain(val) => ProtocolMessage::ChainEntryResponse(val),
             ProtocolResponse::GetObjects(val) => ProtocolMessage::GetObjectsResponse(val),
+            ProtocolResponse::FluffyMissingTxs(val) => ProtocolMessage::FluffyMissingTransactionsRequest(val),
             ProtocolResponse::NA => return Err(MessageConversionError),
         })
     }