Example #1
0
func hasBasePerm(appState AppState, caller *Account, args []byte, gas *int64) (output []byte, err error) {
	if !HasPermission(appState, caller, ptypes.HasBase) {
		return nil, ErrInvalidPermission{caller.Address, "has_base"}
	}
	if len(args) != 2*32 {
		return nil, fmt.Errorf("hasBasePerm() takes two arguments (address, permFlag)")
	}
	addr, permNum := returnTwoArgs(args)
	vmAcc := appState.GetAccount(addr)
	if vmAcc == nil {
		return nil, fmt.Errorf("Unknown account %X", addr)
	}
	permN := ptypes.PermFlag(Uint64FromWord256(permNum)) // already shifted
	if !ValidPermN(permN) {
		return nil, ptypes.ErrInvalidPermission(permN)
	}
	var permInt byte
	if HasPermission(appState, vmAcc, permN) {
		permInt = 0x1
	} else {
		permInt = 0x0
	}
	dbg.Printf("snative.hasBasePerm(0x%X, %b) = %v\n", addr.Postfix(20), permN, permInt)
	return LeftPadWord256([]byte{permInt}).Bytes(), nil
}
Example #2
0
func unsetBasePerm(appState AppState, caller *Account, args []byte, gas *int64) (output []byte, err error) {
	if !HasPermission(appState, caller, ptypes.UnsetBase) {
		return nil, ErrInvalidPermission{caller.Address, "unset_base"}
	}
	if len(args) != 2*32 {
		return nil, fmt.Errorf("unsetBase() takes two arguments (address, permFlag)")
	}
	addr, permNum := returnTwoArgs(args)
	vmAcc := appState.GetAccount(addr)
	if vmAcc == nil {
		return nil, fmt.Errorf("Unknown account %X", addr)
	}
	permN := ptypes.PermFlag(Uint64FromWord256(permNum))
	if !ValidPermN(permN) {
		return nil, ptypes.ErrInvalidPermission(permN)
	}
	if err = vmAcc.Permissions.Base.Unset(permN); err != nil {
		return nil, err
	}
	appState.UpdateAccount(vmAcc)
	dbg.Printf("snative.unsetBasePerm(0x%X, %b)\n", addr.Postfix(20), permN)
	return permNum.Bytes(), nil
}
Example #3
0
func setGlobalPerm(appState AppState, caller *Account, args []byte, gas *int64) (output []byte, err error) {
	if !HasPermission(appState, caller, ptypes.SetGlobal) {
		return nil, ErrInvalidPermission{caller.Address, "set_global"}
	}
	if len(args) != 2*32 {
		return nil, fmt.Errorf("setGlobal() takes two arguments (permFlag, permission value)")
	}
	permNum, perm := returnTwoArgs(args)
	vmAcc := appState.GetAccount(ptypes.GlobalPermissionsAddress256)
	if vmAcc == nil {
		PanicSanity("cant find the global permissions account")
	}
	permN := ptypes.PermFlag(Uint64FromWord256(permNum))
	if !ValidPermN(permN) {
		return nil, ptypes.ErrInvalidPermission(permN)
	}
	permV := !perm.IsZero()
	if err = vmAcc.Permissions.Base.Set(permN, permV); err != nil {
		return nil, err
	}
	appState.UpdateAccount(vmAcc)
	dbg.Printf("snative.setGlobalPerm(%b, %v)\n", permN, permV)
	return perm.Bytes(), nil
}