dunkin-donuts-amex-activator.py

#!/usr/bin/env python
# Copyright (C) 2011 by Jonathan Beluch 
#  
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.

''' Dunkin Donus Amex Activator via SMS or IM

Automates the dd gift card activation found at:
    http://www.dunkindonuts.com/card/Activation/

Send a 16 digit card number, an 8 digit pin and an optional email address,
and the script will activate the card for you by filling out the online form.

Uses Tropo for the IM/SMS interaction.

Setup:
    1. Set up an account on tropo.com
    2. Create a new application in the web ui and use this as the source
    3. In your application settings, request a phone number and activate a 
        jabber IM account.
    4. Text/IM away

Example SMS:
    1111222233334444 77778888 larry@google.com
        \               \                 \
    [16 digit card #]  [8 digit PIN] [optional email address to include in the
                                      activation form]

    Text 'help' to get the usage via SMS.
'''
import urllib
import re

def parse_card_amount(src):
    '''Parse the card amount from the success page.  If there is an
    error, attempt to parse the error and return it.  Else, return a
    generic error message
    '''
    amount_pattern = '<IMG class="amount" alt="(.+?)"'
    amount_match = re.search(amount_pattern, src)

    error_pattern = r'<div class="error">(.+?)<'
    error_match = re.search(error_pattern, src)
    
    if amount_match:
        return amount_match.group(1)
    elif error_match:
        raise ActivationError(error_match.group(1))
    raise ActivationError('Error activating your card.')

def activate_card(cardnumber, pin, email):
    '''Submits the activation form for a given cardnumber, pin and 
    email
    '''
    #GET, load activation page
    url = 'http://www.dunkindonuts.com/card/Activation/'
    #POST, activate the card
    url2 = 'https://www.dunkindonuts.com/card/Activation/Default.aspx'

    #load activation page and get hidden __VIEWSTATE form parameter
    src = urllib.urlopen(url).read()

    #just use regex and get it over with
    p = '<input type="hidden" name="__VIEWSTATE" value="(.*?)" />'
    m = re.search(p, src)
    if not m:
        raise ActivationError('ERROR: Couldn\'t parse __VIEWSTATE from activation page.  Script update needed.')
    viewstate = m.group(1)

    #create post params
    params = {'txtCardNumber': cardnumber, #16 digits
              'txtPIN': pin, #8digits
              'txtFirstName': 'test',
              'txtLastName': 'test',
              'txtEmail': email,
              'txtEmail2': email,
              'txtZipcode': '90210',
              'txtAgree': '1', #click the box 13 and older
              '__EVENTTARGET': 'btnSubmit',
              '__EVENTARG': '',
              '__VIEWSTATE': viewstate,
              }

    log(params)
    src = urllib.urlopen(url2, urllib.urlencode(params)).read()

    #check for success message and txt user back
    amount = parse_card_amount(src)
    say('Your dunkin donuts card with a value of %s has been activated.' % amount)

def parse_sms_args(text):
    '''Parse the card number, PIN and optional email from a users text
    message.
    '''
    cardnumber_pattern = r'\b(\d{16})\b'
    pin_pattern = r'\b(\d{8})\b'
    email_pattern = r'\b(\S+?@\S+?)\b'

    m = re.search(cardnumber_pattern, text)
    if not m:
        raise UsageError('No 16 digit card number found.')
    cardnumber = m.group(1)

    m = re.search(pin_pattern, text)
    if not m:
        raise UsageError('No 8 digit pin found.')
    pin = m.group(1)

    m = re.search(email_pattern, text)
    email = 'larry@google.com'
    if m:
        email = m.group(1)
    
    return cardnumber, pin, email
    
class DDException(Exception):
    def __init__(self, value):
        self.value = value
    def __str__(self):
        return repr(self.value)

class UsageError(DDException):
    pass

class ActivationError(DDException):
    pass

#start here
#verify we are using sms, twitter or IM
if currentCall.channel == 'TEXT' and currentCall.initialText.lower() == 'help':
        say('I need a 16 digit card number and an 8 digit pin number.  You can also include an optional email address to enter into the form.')
elif currentCall.channel == 'TEXT':
    try:
        cardnumber, pin, email = parse_sms_args(currentCall.initialText)
        activate_card(cardnumber, pin, email)
    except UsageError, e:
        say('ERROR: %s Text \'help\' for usage.' % e)
    except ActivationError, e:
        say('ERROR: %s Text \'help\' for usage.' % e)