[#186] *: Add `// V2 format` comment

Add `// V2 format` comment to V2 specific code
in contracts. In `subnet` contract change comment
to sync with other.

Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>

audit/audit_contract.go

@@ -24,6 +24,7 @@ type (
 // epoch and container ID since we iterate over these values. But we can shrink
 // public key by using first bytes of the hashed value.
 
+// V2 format
 const maxKeySize = 24 // 24 + 32 (container ID length) + 8 (epoch length) = 64
 
 func (a auditHeader) ID() []byte {
@@ -211,6 +212,7 @@ func readNext(input []byte) ([]byte, int) {
 }
 
 func newAuditHeader(input []byte) auditHeader {
+	// V2 format
 	offset := int(input[1])
 	offset = 2 + offset + 1 // version prefix + version len + epoch prefix
 

common/transfer.go

@@ -9,6 +9,7 @@ var (
 )
 
 func WalletToScriptHash(wallet []byte) []byte {
+	// V2 format
 	return wallet[1 : len(wallet)-4]
 }
 

container/container_contract.go

@@ -56,6 +56,7 @@ const (
 	// AliasFeeKey is a key in netmap config which contains fee for nice-name registration.
 	AliasFeeKey = "ContainerAliasFee"
 
+	// V2 format
 	containerIDSize = 32 // SHA256 size
 
 	estimateKeyPrefix   = "cnr"
@@ -414,6 +415,7 @@ func SetEACL(eACL []byte, signature interop.Signature, publicKey interop.PublicK
 	ctx := storage.GetContext()
 	notaryDisabled := storage.Get(ctx, notaryDisabledKey).(bool)
 
+	// V2 format
 	// get container ID
 	offset := int(eACL[1])
 	offset = 2 + offset + 4
@@ -520,6 +522,7 @@ func PutContainerSize(epoch int, cid []byte, usedSize int, pubKey interop.Public
 func GetContainerSize(id []byte) containerSizes {
 	ctx := storage.GetReadOnlyContext()
 
+	// V2 format
 	// this `id` expected to be from `ListContainerSizes`
 	// therefore it is not contains postfix, we ignore it in the cut.
 	ln := len(id)
@@ -693,6 +696,7 @@ func getAllContainers(ctx storage.Context) [][]byte {
 	it := storage.Find(ctx, []byte{}, storage.KeysOnly)
 	for iterator.Next(it) {
 		key := iterator.Value(it).([]byte) // it MUST BE `storage.KeysOnly`
+		// V2 format
 		if len(key) == containerIDSize {
 			list = append(list, key)
 		}
@@ -730,6 +734,7 @@ func getOwnerByID(ctx storage.Context, cid []byte) []byte {
 }
 
 func ownerFromBinaryContainer(container []byte) []byte {
+	// V2 format
 	offset := int(container[1])
 	offset = 2 + offset + 4              // version prefix + version size + owner prefix
 	return container[offset : offset+25] // offset + size of owner
@@ -770,6 +775,7 @@ func isStorageNode(ctx storage.Context, key interop.PublicKey) bool {
 	snapshot := contract.Call(netmapContractAddr, "snapshot", contract.ReadOnly, 1).([]storageNode)
 
 	for i := range snapshot {
+		// V2 format
 		nodeInfo := snapshot[i].info
 		nodeKey := nodeInfo[2:35] // offset:2, len:33
 
@@ -787,6 +793,7 @@ func keysToDelete(ctx storage.Context, epoch int) [][]byte {
 	it := storage.Find(ctx, []byte(estimateKeyPrefix), storage.KeysOnly)
 	for iterator.Next(it) {
 		k := iterator.Value(it).([]byte)
+		// V2 format
 		nbytes := k[len(estimateKeyPrefix) : len(k)-containerIDSize-estimatePostfixSize]
 
 		var n interface{} = nbytes

neofsid/neofsid_contract.go

@@ -32,6 +32,7 @@ func _deploy(data interface{}, isUpdate bool) {
 		it := storage.Find(ctx, []byte{}, storage.None)
 		for iterator.Next(it) {
 			kv := iterator.Value(it).([][]byte)
+			// V2 format
 			if len(kv[0]) == 25 {
 				info := std.Deserialize(kv[1]).(UserInfo)
 				key := append([]byte{ownerKeysPrefix}, kv[0]...)
@@ -84,6 +85,7 @@ func Update(script []byte, manifest []byte, data interface{}) {
 // This method panics if OwnerID is not 25 byte or public key is not 33 byte long.
 // If key is already bound, ignores it.
 func AddKey(owner []byte, keys []interop.PublicKey) {
+	// V2 format
 	if len(owner) != 25 {
 		panic("addKey: incorrect owner")
 	}
@@ -149,6 +151,7 @@ func AddKey(owner []byte, keys []interop.PublicKey) {
 // This method panics if OwnerID is not 25 byte or public key is not 33 byte long.
 // If key is already unbound, ignores it.
 func RemoveKey(owner []byte, keys []interop.PublicKey) {
+	// V2 format
 	if len(owner) != 25 {
 		panic("removeKey: incorrect owner")
 	}
@@ -203,6 +206,7 @@ func RemoveKey(owner []byte, keys []interop.PublicKey) {
 //
 // This method panics if owner is not 25 byte long.
 func Key(owner []byte) [][]byte {
+	// V2 format
 	if len(owner) != 25 {
 		panic("key: incorrect owner")
 	}

netmap/netmap_contract.go

@@ -47,6 +47,7 @@ const (
 )
 
 const (
+	// V2 format
 	_ nodeState = iota
 	onlineState
 	offlineState
@@ -215,6 +216,7 @@ func AddPeer(nodeInfo []byte) {
 	}
 
 	if !alphabetCall {
+		// V2 format
 		publicKey := nodeInfo[2:35] // offset:2, len:33
 		if !runtime.CheckWitness(publicKey) {
 			panic("addPeer: witness check failed")

subnet/subnet_contract.go

@@ -84,7 +84,7 @@ func Update(script []byte, manifest []byte, data interface{}) {
 
 // Put creates new subnet with the specified owner and info.
 func Put(id []byte, ownerKey interop.PublicKey, info []byte) {
-	// V2 format check
+	// V2 format
 	if len(id) != subnetIDSize {
 		panic("put: " + ErrInvalidSubnetID)
 	}
@@ -136,7 +136,7 @@ func Put(id []byte, ownerKey interop.PublicKey, info []byte) {
 
 // Get returns info about subnet with the specified id.
 func Get(id []byte) []byte {
-	// V2 format check
+	// V2 format
 	if len(id) != subnetIDSize {
 		panic("get: " + ErrInvalidSubnetID)
 	}
@@ -152,7 +152,7 @@ func Get(id []byte) []byte {
 
 // Delete deletes subnet with the specified id.
 func Delete(id []byte) {
-	// V2 format check
+	// V2 format
 	if len(id) != subnetIDSize {
 		panic("delete: " + ErrInvalidSubnetID)
 	}
@@ -191,7 +191,7 @@ func Delete(id []byte) {
 
 // AddNodeAdmin adds new node administrator to the specified subnetwork.
 func AddNodeAdmin(subnetID []byte, adminKey interop.PublicKey) {
-	// V2 format check
+	// V2 format
 	if len(subnetID) != subnetIDSize {
 		panic("addNodeAdmin: " + ErrInvalidSubnetID)
 	}
@@ -226,7 +226,7 @@ func AddNodeAdmin(subnetID []byte, adminKey interop.PublicKey) {
 // RemoveNodeAdmin removes node administrator from the specified subnetwork.
 // Must be called by subnet owner only.
 func RemoveNodeAdmin(subnetID []byte, adminKey interop.PublicKey) {
-	// V2 format check
+	// V2 format
 	if len(subnetID) != subnetIDSize {
 		panic("removeNodeAdmin: " + ErrInvalidSubnetID)
 	}
@@ -262,7 +262,7 @@ func RemoveNodeAdmin(subnetID []byte, adminKey interop.PublicKey) {
 // Must be called by subnet's owner or node administrator
 // only.
 func AddNode(subnetID []byte, node interop.PublicKey) {
-	// V2 format check
+	// V2 format
 	if len(subnetID) != subnetIDSize {
 		panic("addNode: " + ErrInvalidSubnetID)
 	}
@@ -301,7 +301,7 @@ func AddNode(subnetID []byte, node interop.PublicKey) {
 // Must be called by subnet's owner or node administrator
 // only.
 func RemoveNode(subnetID []byte, node interop.PublicKey) {
-	// V2 format check
+	// V2 format
 	if len(subnetID) != subnetIDSize {
 		panic("removeNode: " + ErrInvalidSubnetID)
 	}
@@ -341,7 +341,7 @@ func RemoveNode(subnetID []byte, node interop.PublicKey) {
 // NodeAllowed checks if node is included in the
 // specified subnet or not.
 func NodeAllowed(subnetID []byte, node interop.PublicKey) bool {
-	// V2 format check
+	// V2 format
 	if len(subnetID) != subnetIDSize {
 		panic("nodeAllowed: " + ErrInvalidSubnetID)
 	}
@@ -367,12 +367,12 @@ func NodeAllowed(subnetID []byte, node interop.PublicKey) bool {
 // AddClientAdmin adds new client administrator of the specified group in the specified subnetwork.
 // Must be called by owner only.
 func AddClientAdmin(subnetID []byte, groupID []byte, adminPublicKey interop.PublicKey) {
-	// V2 format check
+	// V2 format
 	if len(subnetID) != subnetIDSize {
 		panic("addClientAdmin: " + ErrInvalidSubnetID)
 	}
 
-	// V2 format check
+	// V2 format
 	if len(groupID) != groupIDSize {
 		panic("addClientAdmin: " + ErrInvalidGroupID)
 	}
@@ -409,12 +409,12 @@ func AddClientAdmin(subnetID []byte, groupID []byte, adminPublicKey interop.Publ
 // specified group in the specified subnetwork.
 // Must be called by owner only.
 func RemoveClientAdmin(subnetID []byte, groupID []byte, adminPublicKey interop.PublicKey) {
-	// V2 format check
+	// V2 format
 	if len(subnetID) != subnetIDSize {
 		panic("removeClientAdmin: " + ErrInvalidSubnetID)
 	}
 
-	// V2 format check
+	// V2 format
 	if len(groupID) != groupIDSize {
 		panic("removeClientAdmin: " + ErrInvalidGroupID)
 	}
@@ -450,17 +450,17 @@ func RemoveClientAdmin(subnetID []byte, groupID []byte, adminPublicKey interop.P
 // AddUser adds user to the specified subnetwork and group.
 // Must be called by the owner or the group's admin only.
 func AddUser(subnetID []byte, groupID []byte, userID []byte) {
-	// V2 format check
+	// V2 format
 	if len(subnetID) != subnetIDSize {
 		panic("addUser: " + ErrInvalidSubnetID)
 	}
 
-	// V2 format check
+	// V2 format
 	if len(userID) != userIDSize {
 		panic("addUser: " + ErrInvalidUser)
 	}
 
-	// V2 format check
+	// V2 format
 	if len(groupID) != groupIDSize {
 		panic("addUser: " + ErrInvalidGroupID)
 	}
@@ -495,17 +495,17 @@ func AddUser(subnetID []byte, groupID []byte, userID []byte) {
 // RemoveUser removes user from the specified subnetwork and group.
 // Must be called by the owner or the group's admin only.
 func RemoveUser(subnetID []byte, groupID []byte, userID []byte) {
-	// V2 format check
+	// V2 format
 	if len(subnetID) != subnetIDSize {
 		panic("removeUser: " + ErrInvalidSubnetID)
 	}
 
-	// V2 format check
+	// V2 format
 	if len(groupID) != groupIDSize {
 		panic("removeUser: " + ErrInvalidGroupID)
 	}
 
-	// V2 format check
+	// V2 format
 	if len(userID) != userIDSize {
 		panic("addUser: " + ErrInvalidUser)
 	}
@@ -540,7 +540,7 @@ func RemoveUser(subnetID []byte, groupID []byte, userID []byte) {
 // UserAllowed returns bool that indicates if node is included in the
 // specified subnet or not.
 func UserAllowed(subnetID []byte, user []byte) bool {
-	// V2 format check
+	// V2 format
 	if len(subnetID) != subnetIDSize {
 		panic("userAllowed: " + ErrInvalidSubnetID)
 	}