From c4b0ba59e94a9975eea0e73d3591382628632392 Mon Sep 17 00:00:00 2001
From: Aleksandr Bukata <aleksandr.bukata@smartcontract.com>
Date: Mon, 2 Dec 2024 15:18:43 +0000
Subject: [PATCH] handle extra-data

---
 .../ccip/internal/ccipdata/lbtc_reader.go     |  9 ++++----
 .../ocr2/plugins/ccip/tokendata/lbtc/lbtc.go  | 21 ++++++++++++-------
 2 files changed, 17 insertions(+), 13 deletions(-)

diff --git a/core/services/ocr2/plugins/ccip/internal/ccipdata/lbtc_reader.go b/core/services/ocr2/plugins/ccip/internal/ccipdata/lbtc_reader.go
index 5a22b768096..f183c329509 100644
--- a/core/services/ocr2/plugins/ccip/internal/ccipdata/lbtc_reader.go
+++ b/core/services/ocr2/plugins/ccip/internal/ccipdata/lbtc_reader.go
@@ -1,7 +1,6 @@
 package ccipdata
 
 import (
-	"bytes"
 	"context"
 	"fmt"
 
@@ -39,7 +38,7 @@ func (d lbtcPayload) Validate() error {
 }
 
 type LBTCReader interface {
-	GetLBTCMessageInTx(ctx context.Context, payloadHash []byte, txHash string) ([]byte, error)
+	GetLBTCMessageInTx(ctx context.Context, payloadHash [32]byte, txHash string) ([]byte, error)
 	Close() error
 }
 
@@ -83,7 +82,7 @@ func NewLBTCReaderWithCache(lggr logger.Logger, jobID string, transmitter common
 	return r, nil
 }
 
-func (r *LBTCReaderImpl) GetLBTCMessageInTx(ctx context.Context, payloadHash []byte, txHash string) ([]byte, error) {
+func (r *LBTCReaderImpl) GetLBTCMessageInTx(ctx context.Context, payloadHash [32]byte, txHash string) ([]byte, error) {
 	var lpLogs []logpoller.Log
 
 	// fetch all the lbtc logs for the provided tx hash
@@ -113,11 +112,11 @@ func (r *LBTCReaderImpl) GetLBTCMessageInTx(ctx context.Context, payloadHash []b
 	}
 	for _, log := range lpLogs {
 		topics := log.GetTopics()
-		if currentPayloadHash := topics[3]; bytes.Equal(currentPayloadHash[:], payloadHash) {
+		if currentPayloadHash := topics[3]; currentPayloadHash == payloadHash {
 			return parseLBTCDepositPayload(log.Data)
 		}
 	}
-	return nil, fmt.Errorf("payload with hash=%s not found in logs", hexutil.Encode(payloadHash))
+	return nil, fmt.Errorf("payload with hash=%s not found in logs", hexutil.Encode(payloadHash[:]))
 }
 
 func parseLBTCDepositPayload(logData []byte) ([]byte, error) {
diff --git a/core/services/ocr2/plugins/ccip/tokendata/lbtc/lbtc.go b/core/services/ocr2/plugins/ccip/tokendata/lbtc/lbtc.go
index 74c61fae825..01dbb3bc6c1 100644
--- a/core/services/ocr2/plugins/ccip/tokendata/lbtc/lbtc.go
+++ b/core/services/ocr2/plugins/ccip/tokendata/lbtc/lbtc.go
@@ -1,7 +1,6 @@
 package lbtc
 
 import (
-	"bytes"
 	"context"
 	"crypto/sha256"
 	"fmt"
@@ -262,17 +261,23 @@ func (s *TokenDataReader) getLBTCPayloadAndHash(ctx context.Context, msg cciptyp
 	if err != nil {
 		return nil, [32]byte{}, err
 	}
-	payloadHash := decodedSourceTokenData.ExtraData
-	if len(payloadHash) != 32 {
-		s.lggr.Warnw("SourceTokenData.extraData is not 32 bytes. LBTC Attestation probably disabled onchain", "payloadHash", payloadHash)
+	destTokenData := decodedSourceTokenData.ExtraData
+	var payloadHash [32]byte
+	if len(destTokenData) != 32 {
+		payloadHash = sha256.Sum256(destTokenData)
+		s.lggr.Warnw("SourceTokenData.extraData size is not 32. It could be a LBTC payload, not LBTC payload sha256. "+
+			"Probably this message is sent when LBTC attestation was disabled onchain. Will use sha256 from this value",
+			"destTokenData", destTokenData, "newPayloadHash", payloadHash)
+	} else {
+		payloadHash = [32]byte(destTokenData)
 	}
-	payload, err := s.lbtcReader.GetLBTCMessageInTx(ctx, payloadHash, msg.TxHash)
+	actualPayload, err := s.lbtcReader.GetLBTCMessageInTx(ctx, payloadHash, msg.TxHash)
 	if err != nil {
 		return nil, [32]byte{}, err
 	}
-	actualPayloadHash := sha256.Sum256(payload)
-	if bytes.Equal(actualPayloadHash[:], payloadHash) {
-		return payload, [32]byte(payloadHash), nil
+	actualPayloadHash := sha256.Sum256(actualPayload)
+	if actualPayloadHash == payloadHash {
+		return actualPayload, payloadHash, nil
 	}
 	return nil, [32]byte{}, fmt.Errorf("payload hash mismatch: expected %x, got %x", payloadHash, actualPayloadHash)
 }