dstepanov-yadro/frostfs-contract
1
0
Fork 0
forked from TrueCloudLab/frostfs-contract
Code Pull requests Activity

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

Browse source 
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
Show stats Download patch file Download diff file Expand all files Collapse all files

73
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}
@ -287,20 +272,11 @@ 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()
transferred := gas.Transfer(from, user, amount, nil)
@ -310,7 +286,6 @@ func Cheque(id []byte, user interop.Hash160, amount int, lockAcc []byte) bool {
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)
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")
}
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)
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")
}
return true
}