diff --git a/nns/nns_contract.go b/nns/nns_contract.go index 7396cc3..99c3d24 100644 --- a/nns/nns_contract.go +++ b/nns/nns_contract.go @@ -44,6 +44,9 @@ const ( //prefixGlobalDomain contains a flag indicating that this domain was created using GlobalDomain. //This is necessary to distinguish it from regular CNAME records. prefixGlobalDomain byte = 0x23 + // delInfo contains a list of counters that indicate the number of subdomains in the zone. + // If it is null, a full scan of all domains must be performed. + delInfo byte = 0x24 ) // Values constraints. @@ -86,6 +89,11 @@ type RecordState struct { ID byte } +type DelInfo struct { + Count int + IsAutoCreated bool +} + // Update updates NameService contract. func Update(nef []byte, manifest string, data any) { checkCommittee() @@ -234,13 +242,10 @@ func IsAvailable(name string) bool { ctx := storage.GetReadOnlyContext() l := len(fragments) if storage.Get(ctx, append([]byte{prefixRoot}, []byte(fragments[l-1])...)) == nil { - if l != 1 { - panic("TLD not found") - } return true } - checkParentExists(ctx, fragments) + checkParent(ctx, fragments) checkAvailableGlobalDomain(ctx, name) return storage.Get(ctx, append([]byte{prefixName}, getTokenKey([]byte(name))...)) == nil } @@ -304,33 +309,28 @@ func extractCnametgt(ctx storage.Context, name, domain string) string { return fragments[0] + "." + globalDomain } -// checkParentExists panics if any domain from fragments doesn't exist or is expired. -func checkParentExists(ctx storage.Context, fragments []string) { - if dom := parentExpired(ctx, fragments); dom != "" { - panic("domain does not exist or is expired: " + dom) - } -} - -// parentExpired returns domain from fragments that doesn't exist or is expired. -// first denotes the deepest subdomain to check. -func parentExpired(ctx storage.Context, fragments []string) string { +// checkParent returns parent domain or empty string if domain not found. +func checkParent(ctx storage.Context, fragments []string) string { now := int64(runtime.GetTime()) last := len(fragments) - 1 name := fragments[last] + parent := "" for i := last; i > 0; i-- { if i != last { name = fragments[i] + "." + name } nsBytes := storage.Get(ctx, append([]byte{prefixName}, getTokenKey([]byte(name))...)) if nsBytes == nil { - return name + continue } + ns := std.Deserialize(nsBytes.([]byte)).(NameState) if now >= ns.Expiration { - return name + panic("domain expired: " + name) } + parent = name } - return "" + return parent } // Register registers a new domain with the specified owner and name if it's available. @@ -345,6 +345,7 @@ func register(ctx storage.Context, name string, owner interop.Hash160, email str l := len(fragments) tldKey := append([]byte{prefixRoot}, []byte(fragments[l-1])...) + prefixDelInfo := append([]byte{delInfo}, []byte(fragments[len(fragments)-1])...) tldBytes := storage.Get(ctx, tldKey) if l == 1 { checkCommittee() @@ -353,13 +354,22 @@ func register(ctx storage.Context, name string, owner interop.Hash160, email str } storage.Put(ctx, tldKey, 0) } else { - if tldBytes == nil { - panic("TLD not found") - } - checkParentExists(ctx, fragments) + parent := checkParent(ctx, fragments) + if parent == "" { + parent = fragments[len(fragments)-1] - parentKey := getTokenKey([]byte(name[len(fragments[0])+1:])) + var delInfo DelInfo + delInfo.IsAutoCreated = true + storage.Put(ctx, prefixDelInfo, std.Serialize(delInfo)) + + register(ctx, parent, owner, email, refresh, retry, expire, ttl) + } + + parentKey := getTokenKey([]byte(parent)) nsBytes := storage.Get(ctx, append([]byte{prefixName}, parentKey...)) + if nsBytes == nil { + panic("parent does not exist:" + parent) + } ns := std.Deserialize(nsBytes.([]byte)).(NameState) ns.checkAdmin() @@ -408,6 +418,14 @@ func register(ctx storage.Context, name string, owner interop.Hash160, email str updateBalance(ctx, []byte(name), owner, +1) postTransfer(oldOwner, owner, []byte(name), nil) runtime.Notify("RegisterDomain", name) + + var delInfo DelInfo + delInfoRaw := storage.Get(ctx, prefixDelInfo) + if delInfoRaw != nil { + delInfo = std.Deserialize(delInfoRaw.([]byte)).(DelInfo) + } + delInfo.Count = delInfo.Count + 1 + storage.Put(ctx, prefixDelInfo, std.Serialize(delInfo)) return true } @@ -577,14 +595,33 @@ func DeleteDomain(name string) { deleteDomain(ctx, name) } -func deleteDomain(ctx storage.Context, name string) { +func restoreCountSubDomain(ctx storage.Context, name string) int { + countSubDomain := 0 it := Tokens() for iterator.Next(it) { domain := iterator.Value(it) if std.MemorySearch([]byte(domain.(string)), []byte(name)) > 0 { - panic("can't delete a domain that has subdomains") + countSubDomain = countSubDomain + 1 } } + return countSubDomain +} + +func deleteDomain(ctx storage.Context, name string) { + fragments := splitAndCheck(name) + zoneCounterToken := append([]byte{delInfo}, []byte(fragments[len(fragments)-1])...) + var delInfo DelInfo + delInfoRaw := storage.Get(ctx, zoneCounterToken) + if delInfoRaw != nil { + delInfo = std.Deserialize(delInfoRaw.([]byte)).(DelInfo) + } else { + delInfo.Count = restoreCountSubDomain(ctx, fragments[len(fragments)-1]) + storage.Put(ctx, zoneCounterToken, std.Serialize(delInfo)) + } + + if delInfo.Count > 1 && len(fragments) == 1 { + panic("can't delete TLD domain that has subdomains") + } nsKey := append([]byte{prefixName}, getTokenKey([]byte(name))...) nsRaw := storage.Get(ctx, nsKey) @@ -608,6 +645,17 @@ func deleteDomain(ctx storage.Context, name string) { deleteRecords(ctx, name, AAAA) storage.Delete(ctx, nsKey) storage.Delete(ctx, append([]byte{prefixRoot}, []byte(name)...)) + delInfo.Count = delInfo.Count - 1 + storage.Put(ctx, zoneCounterToken, std.Serialize(delInfo)) + + if delInfo.Count == 1 && delInfo.IsAutoCreated { + deleteDomain(ctx, fragments[len(fragments)-1]) + } + + if len(fragments) == 1 { + storage.Delete(ctx, zoneCounterToken) + } + runtime.Notify("DeleteDomain", name) } @@ -681,7 +729,7 @@ func getNameState(ctx storage.Context, tokenID []byte) NameState { tokenKey := getTokenKey(tokenID) ns := getNameStateWithKey(ctx, tokenKey) fragments := std.StringSplit(string(tokenID), ".") - checkParentExists(ctx, fragments) + checkParent(ctx, fragments) return ns } diff --git a/tests/nns_test.go b/tests/nns_test.go index 3e2dcf6..9eb5300 100644 --- a/tests/nns_test.go +++ b/tests/nns_test.go @@ -100,6 +100,18 @@ func TestNNSRegister(t *testing.T) { "com", accTop.ScriptHash(), "myemail@frostfs.info", refresh, retry, expire, ttl) + c1.Invoke(t, true, "register", + "aa.bb.zz", accTop.ScriptHash(), + "myemail@frostfs.info", refresh, retry, expire, ttl) + + c1.InvokeFail(t, "TLD already exists", "register", + "zz", accTop.ScriptHash(), + "myemail@frostfs.info", refresh, retry, expire, ttl) + + c1.Invoke(t, true, "register", + "xx.bb.zz", accTop.ScriptHash(), + "myemail@frostfs.info", refresh, retry, expire, ttl) + acc := c.NewAccount(t) c2 := c.WithSigners(c.Committee, acc) c2.InvokeFail(t, "not witnessed by admin", "register", @@ -251,10 +263,23 @@ func TestDeleteDomain(t *testing.T) { "myemail@frostfs.info", defaultRefresh, defaultRetry, defaultExpire, defaultTTL) c1.InvokeFail(t, "domain not found", "deleteDomain", "ru") - c1.InvokeFail(t, "can't delete a domain that has subdomains", "deleteDomain", "testdomain.com") - c1.Invoke(t, stackitem.Null{}, "deleteDomain", "domik.testdomain.com") + c1.InvokeFail(t, "can't delete TLD domain that has subdomains", "deleteDomain", "com") c1.Invoke(t, stackitem.Null{}, "deleteDomain", "testdomain.com") + c1.Invoke(t, true, "register", + "aa.bb.zzq", acc1.ScriptHash(), + "myemail@frostfs.info", defaultRefresh, defaultRetry, defaultExpire, defaultTTL) + + c1.InvokeFail(t, "TLD already exists", "register", + "zzq", acc1.ScriptHash(), + "myemail@frostfs.info", defaultRefresh, defaultRetry, defaultExpire, defaultTTL) + + c1.Invoke(t, stackitem.Null{}, "deleteDomain", "aa.bb.zzq") + + c1.Invoke(t, true, "register", + "zzq", acc1.ScriptHash(), + "myemail@frostfs.info", defaultRefresh, defaultRetry, defaultExpire, defaultTTL) + c1.Invoke(t, true, "register", "cn", acc1.ScriptHash(), "myemail@frostfs.info", defaultRefresh, defaultRetry, defaultExpire, defaultTTL) @@ -335,11 +360,6 @@ func TestNNSRegisterMulti(t *testing.T) { cBoth.Invoke(t, true, "register", args...) c1 := c.WithSigners(acc) - t.Run("parent domain is missing", func(t *testing.T) { - msg := "domain does not exist or is expired: fs.neo.com" - args[0] = "testnet.fs.neo.com" - c1.InvokeFail(t, msg, "register", args...) - }) args[0] = "fs.neo.com" c1.Invoke(t, true, "register", args...) @@ -499,7 +519,7 @@ func TestNNSIsAvailable(t *testing.T) { c := newNNSInvoker(t, false) c.Invoke(t, true, "isAvailable", "com") - c.InvokeFail(t, "TLD not found", "isAvailable", "domain.com") + //c.InvokeFail(t, "TLD not found", "isAvailable", "domain.com") refresh, retry, expire, ttl := int64(101), int64(102), int64(103), int64(104) c.Invoke(t, true, "register", @@ -512,7 +532,6 @@ func TestNNSIsAvailable(t *testing.T) { acc := c.NewAccount(t) c1 := c.WithSigners(c.Committee, acc) - c1.InvokeFail(t, "domain does not exist or is expired: domain.com", "isAvailable", "dom.domain.com") c1.Invoke(t, true, "register", "domain.com", acc.ScriptHash(), "myemail@frostfs.info", refresh, retry, expire, ttl) @@ -524,7 +543,6 @@ func TestNNSIsAvailable(t *testing.T) { c.Invoke(t, false, "isAvailable", "domain.com") c.Invoke(t, true, "isAvailable", "dom.domain.com") - c.InvokeFail(t, "domain does not exist or is expired: dom.domain.com", "isAvailable", "dom.dom.domain.com") c1.Invoke(t, true, "register", "dom.domain.com", acc.ScriptHash(),