frostfs-contract/neofsid/neofsid_contract.go
Pavel Karpy 5c4e44575a [#184] *: Add ownerSize constant
It consists of 1 byte prefix, script hash
and 4 byte hash of the previous bytes.

Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
2021-12-02 13:09:50 +03:00

246 lines
6 KiB
Go

package neofsid
import (
"github.com/nspcc-dev/neo-go/pkg/interop"
"github.com/nspcc-dev/neo-go/pkg/interop/contract"
"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/std"
"github.com/nspcc-dev/neo-go/pkg/interop/runtime"
"github.com/nspcc-dev/neo-go/pkg/interop/storage"
"github.com/nspcc-dev/neofs-contract/common"
)
type (
UserInfo struct {
Keys [][]byte
}
)
const (
ownerSize = 1 + interop.Hash160Len + 4
)
const (
netmapContractKey = "netmapScriptHash"
containerContractKey = "containerScriptHash"
notaryDisabledKey = "notary"
ownerKeysPrefix = 'o'
)
func _deploy(data interface{}, isUpdate bool) {
ctx := storage.GetContext()
if isUpdate {
it := storage.Find(ctx, []byte{}, storage.None)
for iterator.Next(it) {
kv := iterator.Value(it).([][]byte)
// V2 format
if len(kv[0]) == ownerSize {
info := std.Deserialize(kv[1]).(UserInfo)
key := append([]byte{ownerKeysPrefix}, kv[0]...)
for i := range info.Keys {
storage.Put(ctx, append(key, info.Keys[i]...), []byte{1})
}
storage.Delete(ctx, kv[0])
}
}
return
}
args := data.(struct {
notaryDisabled bool
addrNetmap interop.Hash160
addrContainer interop.Hash160
})
if len(args.addrNetmap) != interop.Hash160Len || len(args.addrContainer) != interop.Hash160Len {
panic("incorrect length of contract script hash")
}
storage.Put(ctx, netmapContractKey, args.addrNetmap)
storage.Put(ctx, containerContractKey, args.addrContainer)
// initialize the way to collect signatures
storage.Put(ctx, notaryDisabledKey, args.notaryDisabled)
if args.notaryDisabled {
common.InitVote(ctx)
runtime.Log("neofsid contract notary disabled")
}
runtime.Log("neofsid contract initialized")
}
// Update method updates contract source code and manifest. Can be invoked
// only by committee.
func Update(script []byte, manifest []byte, data interface{}) {
if !common.HasUpdateAccess() {
panic("only committee can update contract")
}
contract.Call(interop.Hash160(management.Hash), "update",
contract.All, script, manifest, common.AppendVersion(data))
runtime.Log("neofsid contract updated")
}
// AddKey binds list of provided public keys to OwnerID. Can be invoked only by
// Alphabet nodes.
//
// This method panics if OwnerID is not ownerSize 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) != ownerSize {
panic("incorrect owner")
}
ctx := storage.GetContext()
notaryDisabled := storage.Get(ctx, notaryDisabledKey).(bool)
var ( // for invocation collection without notary
alphabet []common.IRNode
nodeKey []byte
indirectCall bool
)
if notaryDisabled {
alphabet = common.AlphabetNodes()
nodeKey = common.InnerRingInvoker(alphabet)
if len(nodeKey) == 0 {
panic("invocation from non inner ring node")
}
indirectCall = common.FromKnownContract(
ctx,
runtime.GetCallingScriptHash(),
containerContractKey,
)
} else {
multiaddr := common.AlphabetAddress()
common.CheckAlphabetWitness(multiaddr)
}
for i := range keys {
if len(keys[i]) != interop.PublicKeyCompressedLen {
panic("incorrect public key")
}
}
ownerKey := append([]byte{ownerKeysPrefix}, owner...)
for i := range keys {
stKey := append(ownerKey, keys[i]...)
storage.Put(ctx, stKey, []byte{1})
}
if notaryDisabled && !indirectCall {
threshold := len(alphabet)*2/3 + 1
id := invokeIDKeys(owner, keys, []byte("add"))
n := common.Vote(ctx, id, nodeKey)
if n < threshold {
return
}
common.RemoveVotes(ctx, id)
}
runtime.Log("key bound to the owner")
}
// RemoveKey unbinds provided public keys from OwnerID. Can be invoked only by
// Alphabet nodes.
//
// This method panics if OwnerID is not ownerSize 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) != ownerSize {
panic("incorrect owner")
}
ctx := storage.GetContext()
notaryDisabled := storage.Get(ctx, notaryDisabledKey).(bool)
var ( // for invocation collection without notary
alphabet []common.IRNode
nodeKey []byte
)
if notaryDisabled {
alphabet = common.AlphabetNodes()
nodeKey = common.InnerRingInvoker(alphabet)
if len(nodeKey) == 0 {
panic("invocation from non inner ring node")
}
} else {
multiaddr := common.AlphabetAddress()
common.CheckAlphabetWitness(multiaddr)
}
for i := range keys {
if len(keys[i]) != interop.PublicKeyCompressedLen {
panic("incorrect public key")
}
}
ownerKey := append([]byte{ownerKeysPrefix}, owner...)
for i := range keys {
stKey := append(ownerKey, keys[i]...)
storage.Delete(ctx, stKey)
}
if notaryDisabled {
threshold := len(alphabet)*2/3 + 1
id := invokeIDKeys(owner, keys, []byte("remove"))
n := common.Vote(ctx, id, nodeKey)
if n < threshold {
return
}
common.RemoveVotes(ctx, id)
}
}
// Key method returns list of 33-byte public keys bound with OwnerID.
//
// This method panics if owner is not ownerSize byte long.
func Key(owner []byte) [][]byte {
// V2 format
if len(owner) != ownerSize {
panic("incorrect owner")
}
ctx := storage.GetReadOnlyContext()
ownerKey := append([]byte{ownerKeysPrefix}, owner...)
info := getUserInfo(ctx, ownerKey)
return info.Keys
}
// Version returns version of the contract.
func Version() int {
return common.Version
}
func getUserInfo(ctx storage.Context, key interface{}) UserInfo {
it := storage.Find(ctx, key, storage.KeysOnly|storage.RemovePrefix)
pubs := [][]byte{}
for iterator.Next(it) {
pub := iterator.Value(it).([]byte)
pubs = append(pubs, pub)
}
return UserInfo{Keys: pubs}
}
func invokeIDKeys(owner []byte, keys []interop.PublicKey, prefix []byte) []byte {
prefix = append(prefix, owner...)
for i := range keys {
prefix = append(prefix, keys[i]...)
}
return crypto.Sha256(prefix)
}