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[#74] neofs: Check alphabet multi signature and don't use ballots

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Ballots are inefficient to collect invocations of contract methods.
Instead contract can check multi signature collected outside of the
contract, e.g. with notary service.

Signed-off-by: Alex Vanin <alexey@nspcc.ru>
This commit is contained in:
Alex Vanin 2021-04-20 17:30:43 +03:00 committed by Alex Vanin
parent be6c280032
commit 086b4c632c
1 changed files with 26 additions and 73 deletions
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99
neofs/neofs_contract.go
View file

@ -36,7 +36,6 @@ 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/gas"
"github.com/nspcc-dev/neo-go/pkg/interop/native/management"
"github.com/nspcc-dev/neo-go/pkg/interop/native/std"
@ -98,7 +97,6 @@ func Init(owner interop.PublicKey, args []interop.PublicKey) bool {
// initialize all storage slices
common.SetSerialized(ctx, alphabetKey, irList)
common.InitVote(ctx)
common.SetSerialized(ctx, candidatesKey, []common.IRNode{})
storage.Put(ctx, common.OwnerKey, owner)
@ -145,22 +143,9 @@ func InnerRingCandidates() []common.IRNode {
func InnerRingCandidateRemove(key interop.PublicKey) bool {
ctx := storage.GetContext()
if !runtime.CheckWitness(key) {
alphabet := getNodes(ctx, alphabetKey)
threshold := len(alphabet)*2/3 + 1
nodeKey := common.InnerRingInvoker(alphabet)
if len(nodeKey) == 0 {
panic("irCandidateRemove: invoked by non alphabet node")
}
id := append(key, []byte("delete")...)
hashID := crypto.Sha256(id)
n := common.Vote(ctx, hashID, nodeKey)
if n < threshold {
return true
}
multiaddr := AlphabetAddress()
if !runtime.CheckWitness(key) && !runtime.CheckWitness(multiaddr) {
panic("irCandidateRemove: this method must be invoked by candidate or alphabet")
}
nodes := []common.IRNode{} // it is explicit declaration of empty slice, not nil
@ -185,7 +170,7 @@ func InnerRingCandidateAdd(key interop.PublicKey) bool {
ctx := storage.GetContext()
if !runtime.CheckWitness(key) {
panic("irCandidateAdd: you should be the owner of the public key")
panic("irCandidateAdd: this method must be invoked by candidate")
}
c := common.IRNode{PublicKey: key}
@ -287,31 +272,21 @@ func Withdraw(user []byte, amount int) bool {
// Cheque sends gas assets back to the user if they were successfully
// locked in NeoFS balance contract.
func Cheque(id []byte, user interop.Hash160, amount int, lockAcc []byte) bool {
ctx := storage.GetContext()
alphabet := getNodes(ctx, alphabetKey)
threshold := len(alphabet)*2/3 + 1
hashID := crypto.Sha256(id)
key := common.InnerRingInvoker(alphabet)
if len(key) == 0 {
panic("cheque: invoked by non alphabet node")
multiaddr := AlphabetAddress()
if !runtime.CheckWitness(multiaddr) {
panic("cheque: this method must be invoked by alphabet")
}
n := common.Vote(ctx, hashID, key)
if n >= threshold {
common.RemoveVotes(ctx, hashID)
from := runtime.GetExecutingScriptHash()
from := runtime.GetExecutingScriptHash()
transferred := gas.Transfer(from, user, amount, nil)
if !transferred {
panic("cheque: failed to transfer funds, aborting")
}
runtime.Log("cheque: funds have been transferred")
runtime.Notify("Cheque", id, user, amount, lockAcc)
transferred := gas.Transfer(from, user, amount, nil)
if !transferred {
panic("cheque: failed to transfer funds, aborting")
}
runtime.Log("cheque: funds have been transferred")
runtime.Notify("Cheque", id, user, amount, lockAcc)
return true
}
@ -360,12 +335,9 @@ func AlphabetUpdate(chequeID []byte, args []interop.PublicKey) bool {
panic("alphabetUpdate: bad arguments")
}
alphabet := getNodes(ctx, alphabetKey)
threshold := len(alphabet)*2/3 + 1
key := common.InnerRingInvoker(alphabet)
if len(key) == 0 {
panic("innerRingUpdate: invoked by non alphabet node")
multiaddr := AlphabetAddress()
if !runtime.CheckWitness(multiaddr) {
panic("alphabetUpdate: this method must be invoked by alphabet")
}
newAlphabet := []common.IRNode{}
@ -381,17 +353,10 @@ func AlphabetUpdate(chequeID []byte, args []interop.PublicKey) bool {
})
}
hashID := crypto.Sha256(chequeID)
common.SetSerialized(ctx, alphabetKey, newAlphabet)
n := common.Vote(ctx, hashID, key)
if n >= threshold {
common.RemoveVotes(ctx, hashID)
common.SetSerialized(ctx, alphabetKey, newAlphabet)
runtime.Notify("AlphabetUpdate", chequeID, newAlphabet)
runtime.Log("alphabetUpdate: alphabet list has been updated")
}
runtime.Notify("AlphabetUpdate", chequeID, newAlphabet)
runtime.Log("alphabetUpdate: alphabet list has been updated")
return true
}
@ -406,27 +371,15 @@ func Config(key []byte) interface{} {
func SetConfig(id, key, val []byte) bool {
ctx := storage.GetContext()
// check if it is alphabet invocation
alphabet := getNodes(ctx, alphabetKey)
threshold := len(alphabet)*2/3 + 1
nodeKey := common.InnerRingInvoker(alphabet)
if len(nodeKey) == 0 {
panic("setConfig: invoked by non alphabet node")
multiaddr := AlphabetAddress()
if !runtime.CheckWitness(multiaddr) {
panic("setConfig: this method must be invoked by alphabet")
}
// vote for new configuration value
hashID := crypto.Sha256(id)
setConfig(ctx, key, val)
n := common.Vote(ctx, hashID, nodeKey)
if n >= threshold {
common.RemoveVotes(ctx, hashID)
setConfig(ctx, key, val)
runtime.Notify("SetConfig", id, key, val)
runtime.Log("setConfig: configuration has been updated")
}
runtime.Notify("SetConfig", id, key, val)
runtime.Log("setConfig: configuration has been updated")
return true
}