[SQUASHED] Optionally skip RANDAO verif during block production (#3116)

beacon_node/http_api/src/lib.rs

@@ -23,7 +23,7 @@ use beacon_chain::{
     observed_operations::ObservationOutcome,
     validator_monitor::{get_block_delay_ms, timestamp_now},
     AttestationError as AttnError, BeaconChain, BeaconChainError, BeaconChainTypes,
-    HeadSafetyStatus, WhenSlotSkipped,
+    HeadSafetyStatus, ProduceBlockVerification, WhenSlotSkipped,
 };
 use block_id::BlockId;
 use eth2::types::{self as api_types, EndpointVersion, ValidatorId};
@@ -46,7 +46,7 @@ use tokio::sync::mpsc::UnboundedSender;
 use tokio_stream::{wrappers::BroadcastStream, StreamExt};
 use types::{
     Attestation, AttesterSlashing, BeaconStateError, CommitteeCache, ConfigAndPreset, Epoch,
-    EthSpec, ForkName, ProposerPreparationData, ProposerSlashing, RelativeEpoch,
+    EthSpec, ForkName, ProposerPreparationData, ProposerSlashing, RelativeEpoch, Signature,
     SignedAggregateAndProof, SignedBeaconBlock, SignedContributionAndProof, SignedVoluntaryExit,
     Slot, SyncCommitteeMessage, SyncContributionData,
 };
@@ -1872,15 +1872,39 @@ pub fn serve<T: BeaconChainTypes>(
              query: api_types::ValidatorBlocksQuery,
              chain: Arc<BeaconChain<T>>| {
                 blocking_json_task(move || {
-                    let randao_reveal = (&query.randao_reveal).try_into().map_err(|e| {
-                        warp_utils::reject::custom_bad_request(format!(
-                            "randao reveal is not valid BLS signature: {:?}",
-                            e
-                        ))
-                    })?;
+                    let randao_reveal = query.randao_reveal.as_ref().map_or_else(
+                        || {
+                            if query.verify_randao {
+                                Err(warp_utils::reject::custom_bad_request(
+                                    "randao_reveal is mandatory unless verify_randao=false".into(),
+                                ))
+                            } else {
+                                Ok(Signature::empty())
+                            }
+                        },
+                        |sig_bytes| {
+                            sig_bytes.try_into().map_err(|e| {
+                                warp_utils::reject::custom_bad_request(format!(
+                                    "randao reveal is not a valid BLS signature: {:?}",
+                                    e
+                                ))
+                            })
+                        },
+                    )?;
+
+                    let randao_verification = if query.verify_randao {
+                        ProduceBlockVerification::VerifyRandao
+                    } else {
+                        ProduceBlockVerification::NoVerification
+                    };
 
                     let (block, _) = chain
-                        .produce_block(randao_reveal, slot, query.graffiti.map(Into::into))
+                        .produce_block_with_verification(
+                            randao_reveal,
+                            slot,
+                            query.graffiti.map(Into::into),
+                            randao_verification,
+                        )
                         .map_err(warp_utils::reject::block_production_error)?;
                     let fork_name = block
                         .to_ref()

beacon_node/http_api/tests/tests.rs

@@ -1919,6 +1919,104 @@ impl ApiTester {
         self
     }
 
+    pub async fn test_block_production_no_verify_randao(self) -> Self {
+        for _ in 0..E::slots_per_epoch() {
+            let slot = self.chain.slot().unwrap();
+
+            let block = self
+                .client
+                .get_validator_blocks_with_verify_randao::<E>(slot, None, None, Some(false))
+                .await
+                .unwrap()
+                .data;
+            assert_eq!(block.slot(), slot);
+            self.chain.slot_clock.set_slot(slot.as_u64() + 1);
+        }
+
+        self
+    }
+
+    pub async fn test_block_production_verify_randao_invalid(self) -> Self {
+        let fork = self.chain.head_info().unwrap().fork;
+        let genesis_validators_root = self.chain.genesis_validators_root;
+
+        for _ in 0..E::slots_per_epoch() {
+            let slot = self.chain.slot().unwrap();
+            let epoch = self.chain.epoch().unwrap();
+
+            let proposer_pubkey_bytes = self
+                .client
+                .get_validator_duties_proposer(epoch)
+                .await
+                .unwrap()
+                .data
+                .into_iter()
+                .find(|duty| duty.slot == slot)
+                .map(|duty| duty.pubkey)
+                .unwrap();
+            let proposer_pubkey = (&proposer_pubkey_bytes).try_into().unwrap();
+
+            let sk = self
+                .validator_keypairs
+                .iter()
+                .find(|kp| kp.pk == proposer_pubkey)
+                .map(|kp| kp.sk.clone())
+                .unwrap();
+
+            let bad_randao_reveal = {
+                let domain = self.chain.spec.get_domain(
+                    epoch,
+                    Domain::Randao,
+                    &fork,
+                    genesis_validators_root,
+                );
+                let message = (epoch + 1).signing_root(domain);
+                sk.sign(message).into()
+            };
+
+            // Check failure with no `verify_randao` passed.
+            self.client
+                .get_validator_blocks::<E>(slot, &bad_randao_reveal, None)
+                .await
+                .unwrap_err();
+
+            // Check failure with `verify_randao=true`.
+            self.client
+                .get_validator_blocks_with_verify_randao::<E>(
+                    slot,
+                    Some(&bad_randao_reveal),
+                    None,
+                    Some(true),
+                )
+                .await
+                .unwrap_err();
+
+            // Check failure with no randao reveal provided.
+            self.client
+                .get_validator_blocks_with_verify_randao::<E>(slot, None, None, None)
+                .await
+                .unwrap_err();
+
+            // Check success with `verify_randao=false`.
+            let block = self
+                .client
+                .get_validator_blocks_with_verify_randao::<E>(
+                    slot,
+                    Some(&bad_randao_reveal),
+                    None,
+                    Some(false),
+                )
+                .await
+                .unwrap()
+                .data;
+
+            assert_eq!(block.slot(), slot);
+            self.chain.slot_clock.set_slot(slot.as_u64() + 1);
+        }
+
+        self
+    }
+
     pub async fn test_get_validator_attestation_data(self) -> Self {
         let mut state = self.chain.head_beacon_state().unwrap();
         let slot = state.slot();
@@ -2770,6 +2868,22 @@ async fn block_production_with_skip_slots() {
         .await;
 }
 
+#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+async fn block_production_no_verify_randao() {
+    ApiTester::new()
+        .await
+        .test_block_production_no_verify_randao()
+        .await;
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+async fn block_production_verify_randao_invalid() {
+    ApiTester::new()
+        .await
+        .test_block_production_verify_randao_invalid()
+        .await;
+}
+
 #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
 async fn get_validator_attestation_data() {
     ApiTester::new()