send_apn.py

#!/usr/bin/python

# Usage: 
# send_apn.py --dev --token=$DEVICE_TOKEN --message='Hello World!' --payload='{"foo": "bar"}'

from optparse import OptionParser
import json, binascii, struct, socket, ssl

parser = OptionParser()
parser.add_option("--dev", action="store_true", dest="dev", default=False, help="use development certificate and sandbox")
parser.add_option("--token", action="store", type="string", dest="device_token", help="device token")
parser.add_option("--message", action="store", type="string", dest="message", help="message to be sent")
parser.add_option("--payload", action="store", type="string", dest="payload", help="payload")
(options, args) = parser.parse_args()

def send(device_token, message, payload, dev=False):
	if dev:
		# openssl pkcs12 -nodes -in CertKey.p12 -out CertKey.pem
		certfile = 'DevCertKey.pem'
		host = ('gateway.sandbox.push.apple.com', 2195)
	else:
		certfile = 'ProdCertKey.pem'
		host = ('gateway.push.apple.com', 2195)

	josn_payload = { 'aps': { 'alert':message, 'sound':'default'}, 'payload':json.loads(payload) }
	data = json.dumps(josn_payload)

	byte_token = binascii.unhexlify(device_token)
	data_format = '!BH32sH%ds' % len(data)
	notification = struct.pack(data_format, 0, 32, byte_token, len(data), data)

	sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
	ssl_sock = ssl.wrap_socket(sock, ssl_version=ssl.PROTOCOL_TLSv1, certfile=certfile)
	ssl_sock.connect(host)
	ssl_sock.write(notification)
	ssl_sock.close()

if __name__ == "__main__":
	send(options.device_token, options.message, options.payload, options.dev)