23f5f1e0e7
`x*2/3` is not equal to `x/3*2` with integers. The only correct way to calculate threshold is the first one. Signed-off-by: Alex Vanin <alexey@nspcc.ru>
74 lines
1.9 KiB
Go
74 lines
1.9 KiB
Go
package common
|
|
|
|
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/ledger"
|
|
"github.com/nspcc-dev/neo-go/pkg/interop/native/neo"
|
|
"github.com/nspcc-dev/neo-go/pkg/interop/native/roles"
|
|
"github.com/nspcc-dev/neo-go/pkg/interop/runtime"
|
|
)
|
|
|
|
type IRNode struct {
|
|
PublicKey interop.PublicKey
|
|
}
|
|
|
|
// InnerRingInvoker returns public key of inner ring node that invoked contract.
|
|
func InnerRingInvoker(ir []IRNode) interop.PublicKey {
|
|
for i := 0; i < len(ir); i++ {
|
|
node := ir[i]
|
|
if runtime.CheckWitness(node.PublicKey) {
|
|
return node.PublicKey
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// InnerRingNodes return list of inner ring nodes from state validator role
|
|
// in side chain.
|
|
func InnerRingNodes() []IRNode {
|
|
blockHeight := ledger.CurrentIndex()
|
|
list := roles.GetDesignatedByRole(roles.NeoFSAlphabet, uint32(blockHeight))
|
|
return keysToNodes(list)
|
|
}
|
|
|
|
// AlphabetNodes return list of alphabet nodes from committee in side chain.
|
|
func AlphabetNodes() []IRNode {
|
|
list := neo.GetCommittee()
|
|
return keysToNodes(list)
|
|
}
|
|
|
|
// AlphabetAddress returns multi address of alphabet public keys.
|
|
func AlphabetAddress() []byte {
|
|
alphabet := neo.GetCommittee()
|
|
return Multiaddress(alphabet, false)
|
|
}
|
|
|
|
// Multiaddress returns default multi signature account address for N keys.
|
|
// If committee set to true, then it is `M = N/2+1` committee account.
|
|
func Multiaddress(n []interop.PublicKey, committee bool) []byte {
|
|
threshold := len(n)*2/3 + 1
|
|
if committee {
|
|
threshold = len(n)/2 + 1
|
|
}
|
|
|
|
keys := []interop.PublicKey{}
|
|
for _, key := range n {
|
|
keys = append(keys, key)
|
|
}
|
|
|
|
return contract.CreateMultisigAccount(threshold, keys)
|
|
}
|
|
|
|
func keysToNodes(list []interop.PublicKey) []IRNode {
|
|
result := []IRNode{}
|
|
|
|
for i := range list {
|
|
result = append(result, IRNode{
|
|
PublicKey: list[i],
|
|
})
|
|
}
|
|
|
|
return result
|
|
}
|