fix(api): guard nil AccountID in getAdditionalInfoStonfi (panic on addr_none pool tokens)

pkg/api/emulation.go

@@ -447,7 +447,7 @@ func EmulatedTreeToTrace(
 func getAdditionalInfoStonfi(ctx context.Context, sharedExecutor *shardsAccountExecutor, additionalInfo *core.TraceAdditionalInfo, token0, token1 tlb.MsgAddress) {
 	t0, err0 := ton.AccountIDFromTlb(token0)
 	t1, err1 := ton.AccountIDFromTlb(token1)
-	if err1 != nil || err0 != nil {
+	if err1 != nil || err0 != nil || t0 == nil || t1 == nil {
 		return
 	}
 	additionalInfo.STONfiPool = &core.STONfiPool{
@@ -461,6 +461,9 @@ func getAdditionalInfoStonfi(ctx context.Context, sharedExecutor *shardsAccountE
 		}
 		data := value.(abi.GetWalletDataResult)
 		master, _ := ton.AccountIDFromTlb(data.Jetton)
+		if master == nil {
+			continue
+		}
 		additionalInfo.SetJettonMaster(accountID, *master)
 	}
 }

pkg/api/emulation_stonfi_nil_test.go

@@ -0,0 +1,26 @@
+package api
+
+import (
+	"context"
+	"testing"
+
+	"github.com/tonkeeper/opentonapi/pkg/core"
+	"github.com/tonkeeper/tongo/tlb"
+)
+
+// TestStonfiNilAddressNoPanic is the regression test for the getAdditionalInfoStonfi
+// nil-pointer dereference: ton.AccountIDFromTlb returns (nil, nil) for addr_none /
+// addr_extern, so a STONfi pool reporting an addr_none token address used to panic
+// the serving goroutine. After the guard, the function returns gracefully without
+// setting STONfiPool. (On the unpatched code this test panics.)
+func TestStonfiNilAddressNoPanic(t *testing.T) {
+	none := tlb.MsgAddress{SumType: "AddrNone"}
+	info := &core.TraceAdditionalInfo{}
+
+	// must not panic on addr_none token addresses
+	getAdditionalInfoStonfi(context.Background(), nil, info, none, none)
+
+	if info.STONfiPool != nil {
+		t.Fatalf("expected STONfiPool to be unset when token addresses are addr_none, got %+v", info.STONfiPool)
+	}
+}