espr_door.py

from flask import Flask, request
app = Flask(__name__)

mac2gpio = dict(
	"00:00:00:00:00:00": 17,
	"00:00:00:00:00:00": 22,
)

if os.path.exists("/sys/class/gpio/gpio17"):
	with open("/sys/class/gpio/unexport", "w") as w:
		w.write("17\n")

with open("/sys/class/gpio/export", "w") as w:
	w.write("17\n")

with open("/sys/class/gpio/gpio17/direction", "w") as w:
	w.write("out\n")

if os.path.exists("/sys/class/gpio/gpio22"):
	with open("/sys/class/gpio/unexport", "w") as w:
		w.write("22\n")

with open("/sys/class/gpio/export", "w") as w:
	w.write("22\n")

with open("/sys/class/gpio/gpio22/direction", "w") as w:
	w.write("out\n")

def get_mac():
	for l in open("/proc/net/arp"): # Linux required
		e = l.split()
		if e[0] == request.environ["REMOTE_ADDR"]:
			return e[3].lower()

@app.route("/open/<battery>")
def hopen(battery):
	pin = mac2gpio.get(mac())
	if pin:
		with open("/sys/class/gpio/gpio%d/value" % pin, "w") as w:
			w.write("0\n")
	return ""

@app.route("/close/<battery>")
def hclose(battery):
	pin = mac2gpio.get(mac())
	if pin:
		with open("/sys/class/gpio/gpio%d/value" % pin, "w") as w:
			w.write("1\n")
	return ""

if __name__=="__main__":
	app.run(port=80)