Parse email for image URL and process

getimage.py

#!/usr/local/bin/python

import subprocess
import fileinput
import email
import re

def extract_body(payload):
    if isinstance(payload,str):
        return payload
    else:
        return '\n'.join([extract_body(part.get_payload()) for part in payload])

def extract_image_urls(body):
    match_http = re.compile('^http:i\/\/')
    image_urls = []
    for line in body.split('\n'):
        stripped_line = line.strip()
        if len(stripped_line) == 0:
            continue

        m = re.search(r'^http:\/\/', stripped_line)

        if m is None:
            continue

        m = re.search(r'\.(?:(jpg)|(png)|(gif)|(jpeg)|(tif))$', stripped_line, re.IGNORECASE)
        if m is not None:
            image_urls.append(stripped_line)

    return image_urls

if __name__ == "__main__":
    full_email = []
    for line in fileinput.input():
        full_email.append(line)
    full_email = ''.join(full_email)

    msg = email.message_from_string(full_email)
    pl = msg.get_payload()
    body = extract_body(pl).split('-- \n')[0]
    image_urls = extract_image_urls(body)

    for img in image_urls:
        subprocess.call(['/path/to/script', img])