[#136] nns: Move CheckCommittee to common package

Signed-off-by: Alexander Chuprov <a.chuprov@yadro.com>

common/witness.go

@@ -1,6 +1,10 @@
 package common
 
-import "github.com/nspcc-dev/neo-go/pkg/interop/runtime"
+import (
+	"github.com/nspcc-dev/neo-go/pkg/interop/contract"
+	"github.com/nspcc-dev/neo-go/pkg/interop/native/neo"
+	"github.com/nspcc-dev/neo-go/pkg/interop/runtime"
+)
 
 var (
 	// ErrAlphabetWitnessFailed appears when the method must be
@@ -37,3 +41,16 @@ func checkWitnessWithPanic(caller []byte, panicMsg string) {
 		panic(panicMsg)
 	}
 }
+
+// CheckCommittee panics if the script container is not signed by the committee.
+func CheckCommittee() {
+	committee := neo.GetCommittee()
+	if committee == nil {
+		panic("failed to get committee")
+	}
+	l := len(committee)
+	committeeMultisig := contract.CreateMultisigAccount(l-(l-1)/2, committee)
+	if committeeMultisig == nil || !runtime.CheckWitness(committeeMultisig) {
+		panic("not witnessed by committee")
+	}
+}

nns/nns_contract.go

@@ -15,7 +15,6 @@ import (
 	"github.com/nspcc-dev/neo-go/pkg/interop/iterator"
 	"github.com/nspcc-dev/neo-go/pkg/interop/native/crypto"
 	"github.com/nspcc-dev/neo-go/pkg/interop/native/management"
-	"github.com/nspcc-dev/neo-go/pkg/interop/native/neo"
 	"github.com/nspcc-dev/neo-go/pkg/interop/native/std"
 	"github.com/nspcc-dev/neo-go/pkg/interop/runtime"
 	"github.com/nspcc-dev/neo-go/pkg/interop/storage"
@@ -93,7 +92,7 @@ type RecordState struct {
 
 // Update updates NameService contract.
 func Update(nef []byte, manifest string, data any) {
-	checkCommittee()
+	common.CheckCommittee()
 	// Calculating keys and serializing requires calling
 	// std and crypto contracts. This can be helpful on update
 	// thus we provide `AllowCall` to management.Update.
@@ -219,7 +218,7 @@ func Roots() iterator.Iterator {
 
 // SetPrice sets the domain registration price.
 func SetPrice(price int64) {
-	checkCommittee()
+	common.CheckCommittee()
 	if price < 0 || price > maxRegisterPrice {
 		panic("The price is out of range.")
 	}
@@ -928,20 +927,7 @@ func isValid(address interop.Hash160) bool {
 // or if the owner does not have permission in FrostfsID.
 func checkCommitteeAndFrostfsID(ctx storage.Context, owner interop.Hash160) {
 	if !checkFrostfsID(ctx, owner) {
-		checkCommittee()
-	}
-}
-
-// checkCommittee panics if the script container is not signed by the committee.
-func checkCommittee() {
-	committee := neo.GetCommittee()
-	if committee == nil {
-		panic("failed to get committee")
-	}
-	l := len(committee)
-	committeeMultisig := contract.CreateMultisigAccount(l-(l-1)/2, committee)
-	if committeeMultisig == nil || !runtime.CheckWitness(committeeMultisig) {
-		panic("not witnessed by committee")
+		common.CheckCommittee()
 	}
 }