Smart Headless RPi - Sends you a direct message in Twitter

Smart headless RPi
Tweeting RPi

Problem: Ever find your self wondering what the IP address is for your raspberry pi is once its headless and you need to remote into it, or even which network its connected to?

I wanted to know which access point my RPi is connected to and its IP address, and so i wrote a little clever program that lets me know just that.  This python program looks up its SSID and IP address then sends you message on twitter. You can use crontab to run this program on start up.

on github: https://github.com/sherkon18/SmartHeadlessRPi

sys,socket, fcntl, struct, socket, array,os
from time import sleep
from twython import Twython

Device_Name="Your Device Name"
time.sleep(30)


#get IP address
def get_ip(ifname):
        s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
        return socket.inet_ntoa(fcntl.ioctl(
                s.fileno(),
                0x8915,
                struct.pack('256s', ifname[:15])

                )[20:24])

IP_address = get_ip('wlan0')

#get ESSID
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
maxLength = {
    "interface": 16,
    "essid": 32
}
calls = {
    "SIOCGIWESSID": 0x8B1B
}

def getESSID(interface):
    """Return the ESSID for an interface, or None if we aren't connected."""
    essid = array.array("c", "\0" * maxLength["essid"])
    essidPointer, essidLength = essid.buffer_info()
    request = array.array("c",
        interface.ljust(maxLength["interface"], "\0") +
        struct.pack("PHH", essidPointer, essidLength, 0)
    )
    fcntl.ioctl(sock.fileno(), calls["SIOCGIWESSID"], request)
name = essid.tostring().rstrip("\0")
    if name:
        return name
    return None

essid = getESSID('wlan0')

tweetStr = "Device Name: "+Device_Name + " IP Address: " + IP_address + " ESSID: " + essid
print tweetStr

apiKey = '[Your Api Key]'
apiSecret = '[Your Api secret]'
accessToken = '[Your access token]'
accessTokenSecret = '[Your access token secret]'

api = Twython(apiKey, apiSecret, accessToken, accessTokenSecret)

api.send_direct_message(user_id='Your User ID',text=tweetStr)