+++ /dev/null
-// (c) Bernhard Tittelbach, 2013
-
-package main
-
-import (
- "errors"
- "time"
-)
-
-type DoorCmdHandler struct {
- Checker func([][]byte) error
- FirmwareChar string
-}
-
-var cmdToDoorCmdHandler = map[string]DoorCmdHandler{
- "open": DoorCmdHandler{checkCmdDoorControl, "o"},
- "close": DoorCmdHandler{checkCmdDoorControl, "c"},
- "toggle": DoorCmdHandler{checkCmdDoorControl, "t"},
- "status": DoorCmdHandler{checkCmdNoArgs, "s"},
-}
-
-// ---------- Talk with Firmware directly in response to stuff it sends ------------
-
-// The problem is this:
-// If the key/motor turns just far enough so that the door is unlocked,
-// but still get's blocked on the way (because the door clamped)
-// the firmware will enter state "timeout_after_open" instead of "open"
-// In this state, manual moving the key/cogwheel will not trigger the state "manual_movement"
-// Users however will not notice that the door is in an error state and needs to manually be moved to the real open position,
-// they have after all, already successfully entered the room.
-// Without that information however, the r3-event-broker daemon, cannot tell if the door is being locked manuall from the inside
-// or if someone else is locking the door for other reasons.
-// Thus, if the door has been opened imperfectly and is then closed manually, it will trigger a presence=false event and switch off the lights.
-//
-// As Workaround, the door daemon watches for "timeout_after_open" events.
-// If one is detected and followed by an "door is now ajar" info, we tell the firmware
-// to open the door, causing it to move out of the error state and into the final open key/cogwheel position.
-func WorkaroundFirmware(serial_wr chan string) (in chan [][]byte) {
- in = make(chan [][]byte, 5)
- go func() {
- var last_state_time time.Time
- var last_door_state string
- for firmware_output := range in {
- Debug_.Printf("WorkaroundFirmware Input: %s", firmware_output)
- if len(firmware_output) > 1 && string(firmware_output[0]) == "State:" {
- last_state_time = time.Now()
- last_door_state = string(firmware_output[1])
- }
- if len(firmware_output) == 5 &&
- string(firmware_output[0]) == "Info(ajar):" &&
- string(firmware_output[4]) == "ajar" &&
- time.Now().Sub(last_state_time) < 30*time.Second &&
- last_door_state == "timeout_after_open" {
- //If we were in state "timeout_after_open" and within 30s the door was openend anyway,
- //we send another "open" command
- serial_wr <- cmdToDoorCmdHandler["open"].FirmwareChar
- Syslog_.Print("Telling Firmware to open, since door was ajar'ed after timeout_after_open")
- }
- }
- }()
- return in
-}
-
-// ---------- ZMQ Command Handling Code -------------
-
-func checkCmdDoorControl(tokens [][]byte) error {
- doorctrl_usage := "syntax: <open|close|toggle> <method> <nickname>"
- if len(tokens) < 2 || len(tokens) > 3 {
- return errors.New(doorctrl_usage)
- }
- cmd := string(tokens[0])
- if !(cmd == "open" || cmd == "close" || cmd == "toggle") {
- return errors.New(doorctrl_usage)
- }
- method := string(tokens[1])
- if !(method == "Button" || method == "ssh" || method == "SSH" || method == "Phone") {
- return errors.New("method must be one either Button, SSH or Phone")
- }
- if (len(tokens) == 2 || len(tokens[2]) == 0) && method != "Button" {
- return errors.New("Operator nickname must be given")
- }
- return nil
-}
-
-func checkCmdNoArgs(tokens [][]byte) error {
- if len(tokens) != 1 {
- return errors.New("command does not accept arguments")
- }
- return nil
-}
-
-func HandleCommand(tokens [][]byte, serial_wr chan string, serial_rd chan [][]byte) error {
- if len(tokens) < 1 {
- return errors.New("No Command to handle")
- }
-
- dch, present := cmdToDoorCmdHandler[string(tokens[0])]
- if !present {
- return errors.New("Unknown Command")
- }
-
- if err := dch.Checker(tokens); err != nil {
- return err
- }
-
- serial_wr <- dch.FirmwareChar
- return nil
-}