#!/usr/bin/env python

import codecs
import os
import re
import sys
import syslog

from ConfigParser import ConfigParser
from email.mime.text import MIMEText
from subprocess import Popen, PIPE
from time import strftime, strptime

def inboxpath():
    c = ConfigParser()
    c.read('/etc/gammu-smsdrc')
    return c.get('smsd', 'InboxPath')

syslog.openlog('gammu-smsd-receive', syslog.LOG_PID, syslog.LOG_DAEMON)

if len(sys.argv) == 1:
    syslog.syslog('Invalid arguments, no messages to process')
    sys.exit(1)

idx = 1
for message in sys.argv[1:]:
    m = re.match('^IN(\d+)_(\d+)_\d+_([^_]+)_\d\d\.(txt|bin)$', message)
    if m is None:
        syslog.syslog('Cannot parse message file %s' % message)
        continue
    date = strptime('%s %s' % (m.group(1), m.group(2)), '%Y%m%d %H%M%S')
    number = m.group(3)

    message = os.path.join(inboxpath(), message)
    if not os.path.exists(message):
        syslog.syslog('Cannot find message file %s' % message)
        continue

    text = codecs.open(message, 'r', encoding='utf-16').read()

    mail = MIMEText(text.encode('utf-8'), 'plain', 'utf-8')
    mail['Subject'] = 'SMS Received from %s' % number
    mail['Date'] = strftime('%a, %d %b %Y %H:%M:%S %Z', date)
    mail['From'] = number
    mail['To'] = 'root'

    p = Popen(["/usr/sbin/sendmail", "-t"], stdin=PIPE)
    p.communicate(mail.as_string())

    idx = idx + 1

    os.unlink(message)

syslog.closelog()