crossrealm.gno

 1package crossrealm_e
 2
 3import (
 4	"chain/runtime/unsafe"
 5)
 6
 7var (
 8	balance int64
 9	owner   address
10)
11
12func init() {
13	balance = 1000
14	SetOwner(address("g1dao_address_here"))
15}
16
17// SetOwner is an internal helper that was exported by mistake
18// (should be setOwner). Without the pre-mutation readonly check,
19// a cross-realm caller could call SetOwner + recover to silently
20// hijack ownership in memory, then call TransferToken to steal funds.
21func SetOwner(o address) {
22	owner = o
23}
24
25func GetOwner() address {
26	return owner
27}
28
29func TransferOwnership(cur realm, o address) {
30	if unsafe.PreviousRealm().Address() != owner {
31		panic("unauthorized")
32	}
33	owner = o
34}
35
36func TransferToken(cur realm) {
37	caller := unsafe.PreviousRealm().Address()
38	if caller != owner {
39		panic("unauthorized")
40	}
41	balance -= 500
42	println("===send token to: ", caller)
43}