forked from TrueCloudLab/neoneo-go
81 lines
2.3 KiB
Go
81 lines
2.3 KiB
Go
package runtimecontract
|
|
|
|
import (
|
|
"github.com/nspcc-dev/neo-go/pkg/interop/native/management"
|
|
"github.com/nspcc-dev/neo-go/pkg/interop/runtime"
|
|
"github.com/nspcc-dev/neo-go/pkg/interop/util"
|
|
)
|
|
|
|
var (
|
|
// Check if the invoker of the contract is the specified owner
|
|
owner = util.FromAddress("NbrUYaZgyhSkNoRo9ugRyEMdUZxrhkNaWB")
|
|
)
|
|
|
|
// init is transformed into _initialize method that is called whenever contract
|
|
// is being loaded (so you'll see this log entry with every invocation).
|
|
func init() {
|
|
// No events and logging allowed in verification context.
|
|
if runtime.GetTrigger() != runtime.Verification {
|
|
runtime.Log("init called")
|
|
}
|
|
}
|
|
|
|
// _deploy is called after contract deployment or update, it'll be called
|
|
// in deployment transaction and if call update method of this contract.
|
|
func _deploy(_ interface{}, isUpdate bool) {
|
|
if isUpdate {
|
|
Log("_deploy method called after contract update")
|
|
return
|
|
}
|
|
Log("_deploy method called after contract creation")
|
|
}
|
|
|
|
// CheckWitness checks owner's witness. It returns true if invoked by the owner
|
|
// and false otherwise.
|
|
func CheckWitness() bool {
|
|
if runtime.CheckWitness(owner) {
|
|
runtime.Log("Verified Owner")
|
|
return true
|
|
}
|
|
return false
|
|
}
|
|
|
|
// Log logs the given message.
|
|
func Log(message string) {
|
|
runtime.Log(message)
|
|
}
|
|
|
|
// Notify emits an event with the specified data.
|
|
func Notify(event interface{}) {
|
|
runtime.Notify("Event", event)
|
|
}
|
|
|
|
// Verify method is used when the contract is being used as a signer of transaction,
|
|
// it can have parameters (that then need to be present in invocation script)
|
|
// and it returns simple pass/fail result. This implementation just checks for
|
|
// the owner's signature presence.
|
|
func Verify() bool {
|
|
// Technically, this restriction is not needed, but you can see the difference
|
|
// between invokefunction and invokecontractverify RPC methods with it.
|
|
if runtime.GetTrigger() != runtime.Verification {
|
|
return false
|
|
}
|
|
return CheckWitness()
|
|
}
|
|
|
|
// Destroy destroys the contract, only the owner can do that.
|
|
func Destroy() {
|
|
if !Verify() {
|
|
panic("only owner can destroy")
|
|
}
|
|
management.Destroy()
|
|
}
|
|
|
|
// Update updates the contract, only the owner can do that. _deploy will be called
|
|
// after update.
|
|
func Update(nef, manifest []byte) {
|
|
if !Verify() {
|
|
panic("only owner can update")
|
|
}
|
|
management.Update(nef, manifest)
|
|
}
|