raspberry pi -> mac shutdown

main.cpp

#include "main.h"

using namespace std;

int main(){

	atexit(onExit);
	gpio_init();

	phase = PHASE_OFF;

	gpio_configure(PIN_PWR, GPIO_OUTPUT);
	gpio_configure(PIN_STATUS, GPIO_OUTPUT);
	gpio_configure(PIN_BUTTON_ON, GPIO_INPUT);
	gpio_configure(PIN_BUTTON_OFF, GPIO_INPUT);

	gpio_configure_pull(PIN_BUTTON_ON,  GPIO_PULLUP);
	gpio_configure_pull(PIN_BUTTON_OFF, GPIO_PULLUP);

	gpio_set(PIN_PWR);
	gpio_clear(PIN_AC_SSR);

	while (1){mainloop();}

	return 0;
	
}

void mainloop(){
	time_t currentTime;

	if (phase == PHASE_OFF)
	{

		if (gpio_read(PIN_BUTTON_ON) == 0){
			//Turn on Mac.
			cout << "Start turning on Mac..." << endl;
			phase = PHASE_BOOTING;
			gpio_set(PIN_AC_SSR);

			time(&stockTime);
		}

	}
	else if (phase == PHASE_BOOTING)
	{

		//wait for Mac boot finished.
		time(&currentTime);

		if (difftime(currentTime, stockTime) > BOOT_WAIT_TIME){
			cout << "Boot standby mode finished." << endl;
			phase = PHASE_ON;
		}

	}
	else if (phase == PHASE_ON)
	{

		if (gpio_read(PIN_BUTTON_OFF) == 0){
			cout << "call Shutdown reqest..." << endl;
			//call Shell script
			system(". powerOff.sh");
			system("autossh 192.168.124.10 usrID usrPass");
			phase = PHASE_COOLING;

			time(&stockTime);
		}

	}
	else if (phase == PHASE_COOLING)
	{
		//wait for Mac shutdown finished.
		time(&currentTime);

		if (difftime(currentTime, stockTime) > COOL_WAIT_TIME){
			cout << "Cooling finished." << endl;
			phase = PHASE_OFF;
			gpio_clear(PIN_AC_SSR);
		}

	}

}

void onExit(){

	gpio_clear(PIN_PWR);
	gpio_clear(PIN_STATUS);

	cout << "exit powerController." << endl;

}

main.h

#include <iostream>
#include <stdio.h>
#include <time.h>
#include "raspGPIO.h"

#define PHASE_BOOTING	0
#define PHASE_ON		1
#define PHASE_COOLING	2
#define PHASE_OFF		3

#define PIN_PWR			3
#define PIN_STATUS		17
#define PIN_BUTTON_OFF	27
#define PIN_BUTTON_ON	27
#define PIN_AC_SSR		2

#define BOOT_WAIT_TIME 300.00
#define COOL_WAIT_TIME 120.00

void	mainloop();
void	onExit();
int		main();

int phase;
time_t stockTime;

powerOff.sh

#!/bin/sh

auto_ssh(){

host=$1
id=$2
pass=$3

expect -c "
set timeout 10
spawn ssh -t ${id}@${host} sudo shutdown -h -u now

expect \"Are you sure you want to continue connecting (yes/no)?\" {

	send \"yes\n\"
	expect \"Password:\"
	send \"${pass}\n\"	
	expect \"Password:\"
	send \"${pass}\n\"
	expect \"Password:\"
	send \"${pass}\n\"

} \"Password:\" {
	send \"${pass}\n\"
	expect \"Password:\"
	send \"${pass}\n\"
	expect \"Password:\"
	send \"${pass}\n\"
}

"

}