forked from TrueCloudLab/frostfs-contract
80 lines
2.4 KiB
Go
80 lines
2.4 KiB
Go
package processing
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import (
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"github.com/TrueCloudLab/frostfs-contract/common"
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"github.com/nspcc-dev/neo-go/pkg/interop"
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"github.com/nspcc-dev/neo-go/pkg/interop/contract"
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"github.com/nspcc-dev/neo-go/pkg/interop/native/gas"
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"github.com/nspcc-dev/neo-go/pkg/interop/native/ledger"
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"github.com/nspcc-dev/neo-go/pkg/interop/native/management"
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"github.com/nspcc-dev/neo-go/pkg/interop/native/roles"
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"github.com/nspcc-dev/neo-go/pkg/interop/runtime"
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"github.com/nspcc-dev/neo-go/pkg/interop/storage"
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)
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const (
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neofsContractKey = "neofsScriptHash"
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multiaddrMethod = "alphabetAddress"
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)
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// OnNEP17Payment is a callback for NEP-17 compatible native GAS contract.
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func OnNEP17Payment(from interop.Hash160, amount int, data interface{}) {
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caller := runtime.GetCallingScriptHash()
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if !common.BytesEqual(caller, []byte(gas.Hash)) {
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common.AbortWithMessage("processing contract accepts GAS only")
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}
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}
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func _deploy(data interface{}, isUpdate bool) {
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if isUpdate {
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args := data.([]interface{})
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common.CheckVersion(args[len(args)-1].(int))
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return
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}
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args := data.(struct {
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addrNeoFS interop.Hash160
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})
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ctx := storage.GetContext()
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if len(args.addrNeoFS) != interop.Hash160Len {
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panic("incorrect length of contract script hash")
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}
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storage.Put(ctx, neofsContractKey, args.addrNeoFS)
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runtime.Log("processing contract initialized")
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}
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// Update method updates contract source code and manifest. It can be invoked
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// only by the sidechain committee.
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func Update(script []byte, manifest []byte, data interface{}) {
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blockHeight := ledger.CurrentIndex()
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alphabetKeys := roles.GetDesignatedByRole(roles.NeoFSAlphabet, uint32(blockHeight+1))
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alphabetCommittee := common.Multiaddress(alphabetKeys, true)
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if !runtime.CheckWitness(alphabetCommittee) {
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panic("only side chain committee can update contract")
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}
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contract.Call(interop.Hash160(management.Hash), "update",
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contract.All, script, manifest, common.AppendVersion(data))
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runtime.Log("processing contract updated")
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}
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// Verify method returns true if transaction contains valid multisignature of
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// Alphabet nodes of the Inner Ring.
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func Verify() bool {
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ctx := storage.GetContext()
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neofsContractAddr := storage.Get(ctx, neofsContractKey).(interop.Hash160)
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multiaddr := contract.Call(neofsContractAddr, multiaddrMethod, contract.ReadOnly).(interop.Hash160)
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return runtime.CheckWitness(multiaddr)
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}
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// Version returns the version of the contract.
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func Version() int {
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return common.Version
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}
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