frostfs-contract/neofsid/neofsid_contract.go

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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/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 (
netmapContractKey = "netmapScriptHash"
containerContractKey = "containerScriptHash"
notaryDisabledKey = "notary"
)
func _deploy(data interface{}, isUpdate bool) {
if isUpdate {
return
}
args := data.([]interface{})
notaryDisabled := args[0].(bool)
addrNetmap := args[1].(interop.Hash160)
addrContainer := args[2].(interop.Hash160)
ctx := storage.GetContext()
if len(addrNetmap) != 20 || len(addrContainer) != 20 {
panic("init: incorrect length of contract script hash")
}
storage.Put(ctx, netmapContractKey, addrNetmap)
storage.Put(ctx, containerContractKey, addrContainer)
// initialize the way to collect signatures
storage.Put(ctx, notaryDisabledKey, notaryDisabled)
if 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, 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 25 byte or public key is not 33 byte long.
// If key is already bound, ignores it.
func AddKey(owner []byte, keys []interop.PublicKey) {
if len(owner) != 25 {
panic("addKey: 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("addKey: invocation from non inner ring node")
}
indirectCall = common.FromKnownContract(
ctx,
runtime.GetCallingScriptHash(),
containerContractKey,
)
} else {
multiaddr := common.AlphabetAddress()
if !runtime.CheckWitness(multiaddr) {
panic("addKey: invocation from non inner ring node")
}
}
info := getUserInfo(ctx, owner)
addLoop:
for i := 0; i < len(keys); i++ {
pubKey := keys[i]
if len(pubKey) != 33 {
panic("addKey: incorrect public key")
}
for j := range info.Keys {
key := info.Keys[j]
if common.BytesEqual(key, pubKey) {
continue addLoop
}
}
info.Keys = append(info.Keys, pubKey)
}
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)
}
common.SetSerialized(ctx, owner, info)
runtime.Log("addKey: 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 25 byte or public key is not 33 byte long.
// If key is already unbound, ignores it.
func RemoveKey(owner []byte, keys []interop.PublicKey) {
if len(owner) != 25 {
panic("removeKey: 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("removeKey: invocation from non inner ring node")
}
} else {
multiaddr := common.AlphabetAddress()
if !runtime.CheckWitness(multiaddr) {
panic("removeKey: invocation from non inner ring node")
}
}
info := getUserInfo(ctx, owner)
var leftKeys [][]byte
rmLoop:
for i := range info.Keys {
key := info.Keys[i]
for j := 0; j < len(keys); j++ {
pubKey := keys[j]
if len(pubKey) != 33 {
panic("removeKey: incorrect public key")
}
if common.BytesEqual(key, pubKey) {
continue rmLoop
}
}
leftKeys = append(leftKeys, key)
}
info.Keys = leftKeys
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)
}
common.SetSerialized(ctx, owner, info)
}
// Key method returns list of 33-byte public keys bound with OwnerID.
//
// This method panics if owner is not 25 byte long.
func Key(owner []byte) [][]byte {
if len(owner) != 25 {
panic("key: incorrect owner")
}
ctx := storage.GetReadOnlyContext()
info := getUserInfo(ctx, owner)
return info.Keys
}
// Version returns version of the contract.
func Version() int {
return common.Version
}
func getUserInfo(ctx storage.Context, key interface{}) UserInfo {
data := storage.Get(ctx, key)
if data != nil {
return std.Deserialize(data.([]byte)).(UserInfo)
}
return UserInfo{Keys: [][]byte{}}
}
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)
}