Raspberry Pi で動的 IP を Twitter な DM で送らせるメソッド

log.sh

$ sudo apt-get python-pip
$ sudo pip install tweepy
$ mkdir ~/bin
$ pico ~/bin/send_addr.py
$ sudo pico /etc/dhcp/dhclient-exit-hooks.d/send_dm

send_addr.py

# vim: fileencoding=utf-8 :

import sys
from tweepy import API, OAuthHandler, TweepError

CONSUMER_KEY = u'consumer key here.'
CONSUMER_SECRET = u'consumer secret here.'
ACCESS_KEY = u'access token key here.'
ACCESS_SECRET = u'access token secret here.'

TARGET_SCREEN_NAME = u'screen_name here.'

def create_api():
  auth = OAuthHandler(CONSUMER_KEY, CONSUMER_SECRET)
  auth.set_access_token(ACCESS_KEY, ACCESS_SECRET)
  api = API(auth, api_root='/1.1')
  return api

def main():
  params = sys.argv[1:]
  try:
    name, signal, addr = params[0:3]
  except ValueError, e:
    sys.stderr.write('name, signal and ip address required.\n')
    sys.stderr.flush()
    sys.exit(1)

  api = create_api()
  res = api.send_direct_message(screen_name=TARGET_SCREEN_NAME, text=u'%s caught %s: %s' % (name, signal, addr))

if __name__ == '__main__':
  main()
  

send_dm

#
# tell ip address when changed.
#

case $reason in
    BOUND)
        python /path/to/send_addr.py "RaspberryPi" "${reason}" "${new_ip_address}"
        ;;
    RENEW|REBIND)
        if [ "$old_ip_address" != "$new_ip_address" ]; then
            python /path/to/send_addr.py "RaspberryPi" "${reason}" "${new_ip_address}"
        fi
        ;;
esac