nns: accept expiration period in renew

Port https://github.com/neo-project/non-native-contracts/pull/13.

examples/nft-nd-nns/nns.go

@@ -69,6 +69,8 @@ const (
 	millisecondsInSecond = 1000
 	// millisecondsInYear is amount of milliseconds per year.
 	millisecondsInYear = 365 * 24 * 3600 * millisecondsInSecond
+	// millisecondsInTenYears is the amount of milliseconds per ten years.
+	millisecondsInTenYears = 10 * millisecondsInYear
 )
 
 // RecordState is a type that registered entities are saved to.
@@ -413,8 +415,16 @@ func updateSoaSerial(ctx storage.Context, tokenId []byte) {
 	storage.Put(ctx, recordKey, recBytes)
 }
 
-// Renew increases domain expiration date.
-func Renew(name string) int {
+// RenewDefault increases domain expiration date up to 1 year.
+func RenewDefault(name string) int {
+	return Renew(name, 1)
+}
+
+// Renew increases domain expiration date up to the specified amount of years.
+func Renew(name string, years int64) int {
+	if years < 1 || years > 10 {
+		panic("invalid renewal period value")
+	}
 	if len(name) > maxDomainNameLength {
 		panic("invalid domain name format")
 	}
@@ -426,12 +436,15 @@ func Renew(name string) int {
 	if price < 0 {
 		checkCommittee()
 	} else {
-		runtime.BurnGas(price)
+		runtime.BurnGas(price * int(years))
 	}
 
 	ctx := storage.GetContext()
 	ns := getNameState(ctx, []byte(name))
-	ns.Expiration += millisecondsInYear
+	ns.Expiration += int(millisecondsInYear * years)
+	if ns.Expiration > int(runtime.GetTime())+millisecondsInTenYears {
+		panic("10 years of expiration period at max is allowed")
+	}
 	putNameState(ctx, ns)
 	return ns.Expiration
 }

examples/nft-nd-nns/nns.yml

@@ -19,3 +19,5 @@ permissions:
   - hash: fffdc93764dbaddd97c48f252a53ea4643faa3fd
     methods: ["update"]
   - methods: ["onNEP11Payment"]
+overloads:
+  renewDefault: renew

examples/nft-nd-nns/nns_test.go

@@ -158,7 +158,7 @@ func TestExpiration(t *testing.T) {
 func TestRegisterAndRenew(t *testing.T) {
 	c := newNSClient(t, false)
 	e := c.Executor
-	mail, refresh, retry, expire, ttl := "sami@nspcc.ru", int64(101), int64(102), int64(millisecondsInYear/1000*100), int64(104)
+	mail, refresh, retry, expire, ttl := "sami@nspcc.ru", int64(101), int64(102), int64(millisecondsInYear/1000*2), int64(104)
 
 	c.InvokeFail(t, "TLD not found", "isAvailable", "neo-go.com")
 	c.Invoke(t, true, "register", "org", c.CommitteeHash, mail, refresh, retry, expire, ttl)
@@ -214,6 +214,15 @@ func TestRegisterAndRenew(t *testing.T) {
 
 	props.Add(stackitem.Make("expiration"), stackitem.Make(expectedExpiration))
 	c.Invoke(t, props, "properties", "neo-go.com")
+
+	// Invalid renewal period.
+	c.InvokeFail(t, "invalid renewal period value", "renew", "neo-go.com", 11)
+	// Too large expiration period.
+	c.InvokeFail(t, "10 years of expiration period at max is allowed", "renew", "neo-go.com", 10)
+
+	// Non-default renewal period.
+	mult := 2
+	c.Invoke(t, expectedExpiration+uint64(mult*millisecondsInYear), "renew", "neo-go.com", mult)
 }
 
 func TestSetAddGetRecord(t *testing.T) {