private bool BlockAccount(ApplicationEngine engine, UInt160 account)
{
if (!CheckCommittees(engine))
{
return(false);
}
StorageKey key = CreateStorageKey(Prefix_BlockedAccounts);
StorageItem storage = engine.Snapshot.Storages[key];
List <UInt160> accounts = storage.GetSerializableList <UInt160>();
if (accounts.Contains(account))
{
return(false);
}
engine.Snapshot.Storages.GetAndChange(key);
accounts.Add(account);
return(true);
}
private bool UnblockAccount(ApplicationEngine engine, UInt160 account)
{
if (!CheckCommittee(engine))
{
return(false);
}
StorageKey key = CreateStorageKey(Prefix_BlockedAccounts);
StorageItem storage = engine.Snapshot.Storages.TryGet(key);
if (storage is null)
{
return(false);
}
List <UInt160> accounts = storage.GetSerializableList <UInt160>();
int index = accounts.IndexOf(account);
if (index < 0)
{
return(false);
}
engine.Snapshot.Storages.GetAndChange(key);
accounts.RemoveAt(index);
return(true);
}