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
}
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
}
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
}