812 lines
33 KiB
Python
812 lines
33 KiB
Python
from regluit.core.models import Campaign, Wishlist
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from regluit.payment.models import Transaction, Receiver, PaymentResponse
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from django.contrib.auth.models import User
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from django.core.urlresolvers import reverse
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from django.conf import settings
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from regluit.payment.parameters import *
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if settings.PAYMENT_PROCESSOR == 'paypal':
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from regluit.payment.paypal import Pay, Finish, Preapproval, ProcessIPN, CancelPreapproval, PaymentDetails, PreapprovalDetails, RefundPayment
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from regluit.payment.paypal import Pay as Execute
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elif settings.PAYMENT_PROCESSOR == 'amazon':
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from regluit.payment.amazon import Pay, Execute, Finish, Preapproval, ProcessIPN, CancelPreapproval, PaymentDetails, PreapprovalDetails, RefundPayment
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import uuid
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import traceback
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from regluit.utils.localdatetime import now
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from dateutil.relativedelta import relativedelta
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import logging
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from decimal import Decimal as D
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from xml.dom import minidom
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import urllib, urlparse
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from django.conf import settings
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logger = logging.getLogger(__name__)
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def append_element(doc, parent, name, text):
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element = doc.createElement(name)
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parent.appendChild(element)
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text_node = doc.createTextNode(text)
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element.appendChild(text_node)
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return element
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# at this point, there is no internal context and therefore, the methods of PaymentManager can be recast into static methods
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class PaymentManager( object ):
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def __init__( self, embedded=False):
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self.embedded = embedded
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def processIPN(self, request):
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# Forward to our payment processor
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return ProcessIPN(request)
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def update_preapproval(self, transaction):
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"""Update a transaction to hold the data from a PreapprovalDetails on that transaction"""
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t = transaction
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p = PreapprovalDetails(t)
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preapproval_status = {'id':t.id, 'key':t.preapproval_key}
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if p.error() or not p.success():
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logger.info("Error retrieving preapproval details for transaction %d" % t.id)
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preapproval_status["error"] = "An error occurred while verifying this transaction, see server logs for details"
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else:
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# Check the transaction status
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if t.status != p.status:
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preapproval_status["status"] = {'ours':t.status, 'theirs':p.status}
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t.status = p.status
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t.save()
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# check the currency code
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if t.currency != p.currency:
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preapproval_status["currency"] = {'ours':t.currency, 'theirs':p.currency}
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t.currency = p.currency
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t.save()
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# Check the amount
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if t.max_amount != D(p.amount):
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preapproval_status["amount"] = {'ours':t.max_amount, 'theirs':p.amount}
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t.max_amount = p.amount
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t.save()
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# Check approved
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if t.approved != p.approved:
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preapproval_status["approved"] = {'ours':t.approved, 'theirs':p.approved}
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t.approved = p.approved
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t.save()
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# In amazon FPS, we may not have a pay_key via the return URL, update here
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try:
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if t.pay_key != p.pay_key:
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preapproval_status['pay_key'] = {'ours':t.pay_key, 'theirs':p.pay_key}
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t.pay_key = p.pay_key
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t.save()
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except:
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# No problem, p.pay_key is not defined for paypal function
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blah = "blah"
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return preapproval_status
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def update_payment(self, transaction):
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"""Update a transaction to hold the data from a PaymentDetails on that transaction"""
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t = transaction
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payment_status = {'id':t.id}
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p = PaymentDetails(t)
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if p.error() or not p.success():
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logger.info("Error retrieving payment details for transaction %d" % t.id)
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payment_status['error'] = "An error occurred while verifying this transaction, see server logs for details"
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else:
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# Check the transaction status
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if t.status != p.status:
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payment_status['status'] = {'ours': t.status, 'theirs': p.status}
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t.status = p.status
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t.local_status = p.local_status
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t.save()
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receivers_status = []
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for r in p.transactions:
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# This is only supported for paypal at this time
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try:
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receiver = Receiver.objects.get(transaction=t, email=r['email'])
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receiver_status = {'email':r['email']}
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logger.info(r)
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logger.info(receiver)
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# Check for updates on each receiver's status. Note that unprocessed delayed chained payments
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# will not have a status code or txn id code
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if receiver.status != r['status']:
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receiver_status['status'] = {'ours': receiver.status, 'theirs': r['status']}
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receiver.status = r['status']
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receiver.save()
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if receiver.txn_id != r['txn_id']:
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receiver_status['txn_id'] = {'ours':receiver.txn_id, 'theirs':r['txn_id']}
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receiver.txn_id = r['txn_id']
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receiver.save()
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except:
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traceback.print_exc()
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if not set(["status","txn_id"]).isdisjoint(receiver_status.keys()):
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receivers_status.append(receiver_status)
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if len(receivers_status):
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payment_status["receivers"] = receivers_status
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return payment_status
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def checkStatus(self, past_days=None, transactions=None):
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'''
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Run through all pay transactions and verify that their current status is as we think.
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Allow for a list of transactions to be passed in or for the method to check on all transactions within the
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given past_days
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'''
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DEFAULT_DAYS_TO_CHECK = 3
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status = {'payments':[], 'preapprovals':[]}
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# look at all PAY transactions for stated number of past days; if past_days is not int, get all Transaction
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# only PAY transactions have date_payment not None
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if transactions is None:
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if past_days is None:
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past_days = DEFAULT_DAYS_TO_CHECK
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try:
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ref_date = now() - relativedelta(days=int(past_days))
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payment_transactions = Transaction.objects.filter(date_payment__gte=ref_date)
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except:
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ref_date = now()
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payment_transactions = Transaction.objects.filter(date_payment__isnull=False)
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logger.info(payment_transactions)
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# Now look for preapprovals that have not been paid and check on their status
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preapproval_transactions = Transaction.objects.filter(date_authorized__gte=ref_date, date_payment=None, type=PAYMENT_TYPE_AUTHORIZATION)
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logger.info(preapproval_transactions)
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transactions = payment_transactions | preapproval_transactions
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for t in transactions:
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if t.date_payment is None:
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preapproval_status = self.update_preapproval(t)
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logger.info("transaction: {0}, preapproval_status: {1}".format(t, preapproval_status))
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if not set(['status', 'currency', 'amount', 'approved']).isdisjoint(set(preapproval_status.keys())):
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status["preapprovals"].append(preapproval_status)
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else:
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payment_status = self.update_payment(t)
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if not set(["status", "receivers"]).isdisjoint(payment_status.keys()):
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status["payments"].append(payment_status)
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return status
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def run_query(self, transaction_list, summary, pledged, authorized, incomplete, completed):
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'''
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Generic query handler for returning summary and transaction info, see query_user, query_list and query_campaign
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'''
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if pledged:
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pledged_list = transaction_list.filter(type=PAYMENT_TYPE_INSTANT,
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status=TRANSACTION_STATUS_COMPLETE_PRIMARY)
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else:
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pledged_list = []
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if authorized:
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# return only ACTIVE transactions with approved=True
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authorized_list = transaction_list.filter(type=PAYMENT_TYPE_AUTHORIZATION,
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status=TRANSACTION_STATUS_ACTIVE,
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approved=True)
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else:
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authorized_list = []
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if incomplete:
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incomplete_list = transaction_list.filter(type=PAYMENT_TYPE_AUTHORIZATION,
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status=TRANSACTION_STATUS_INCOMPLETE)
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else:
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incomplete_list = []
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if completed:
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completed_list = transaction_list.filter(type=PAYMENT_TYPE_AUTHORIZATION,
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status=TRANSACTION_STATUS_COMPLETE_PRIMARY)
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else:
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completed_list = []
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if summary:
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pledged_amount = D('0.00')
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authorized_amount = D('0.00')
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incomplete_amount = D('0.00')
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completed_amount = D('0.00')
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for t in pledged_list:
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for r in t.receiver_set.all():
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if r.status == TRANSACTION_STATUS_COMPLETED:
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# or IPN_SENDER_STATUS_COMPLETED
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# individual senders may not have been paid due to errors, and disputes/chargebacks only appear here
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pledged_amount += r.amount
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for t in authorized_list:
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authorized_amount += t.amount
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for t in incomplete_list:
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incomplete_amount += t.amount
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for t in completed_list:
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completed_amount += t.amount
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amount = pledged_amount + authorized_amount + incomplete_amount + completed_amount
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return amount
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else:
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return pledged_list | authorized_list | incomplete_list | completed_list
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def query_user(self, user, summary=False, pledged=True, authorized=True, incomplete=True, completed=True):
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'''
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query_user
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Returns either an amount or list of transactions for a user
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summary: if true, return a float of the total, if false, return a list of transactions
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pledged: include amounts pledged
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authorized: include amounts pre-authorized
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incomplete: include amounts for transactions with INCOMPLETE status
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completed: include amounts for transactions that are COMPLETED
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return value: either a float summary or a list of transactions
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'''
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transactions = Transaction.objects.filter(user=user)
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return self.run_query(transactions, summary, pledged, authorized, incomplete=True, completed=True)
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def query_campaign(self, campaign, summary=False, pledged=True, authorized=True, incomplete=True, completed=True):
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'''
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query_campaign
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Returns either an amount or list of transactions for a campaign
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summary: if true, return a float of the total, if false, return a list of transactions
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pledged: include amounts pledged
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authorized: include amounts pre-authorized
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incomplete: include amounts for transactions with INCOMPLETE status
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completed: includes payments that have been completed
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return value: either a float summary or a list of transactions
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'''
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transactions = Transaction.objects.filter(campaign=campaign)
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return self.run_query(transactions, summary, pledged, authorized, incomplete, completed)
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def query_list(self, list, summary=False, pledged=True, authorized=True, incomplete=True, completed=True):
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'''
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query_list
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Returns either an amount or list of transactions for a list
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summary: if true, return a float of the total, if false, return a list of transactions
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pledged: include amounts pledged
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authorized: include amounts pre-authorized
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incomplete: include amounts for transactions with INCOMPLETE status
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completed: includes payments that have been completed
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return value: either a float summary or a list of transactions
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'''
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transactions = Transaction.objects.filter(list=list)
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return self.run_query(transactions, summary, pledged, authorized, incomplete, completed)
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def execute_campaign(self, campaign):
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'''
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execute_campaign
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attempts to execute all pending transactions for a campaign.
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return value: returns a list of transactions with the status of each receiver/transaction updated
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'''
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# only allow active transactions to go through again, if there is an error, intervention is needed
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transactions = Transaction.objects.filter(campaign=campaign, status=IPN_PREAPPROVAL_STATUS_ACTIVE)
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for t in transactions:
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receiver_list = [{'email':settings.PAYPAL_GLUEJAR_EMAIL, 'amount':t.amount},
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{'email':campaign.paypal_receiver, 'amount':D(t.amount) * (D('1.00') - D(str(settings.GLUEJAR_COMMISSION)))}]
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self.execute_transaction(t, receiver_list)
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# TO DO: update campaign status
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# Should this be done first before executing the transactions?
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# How does the success/failure of transactions affect states of campaigns
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return transactions
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def finish_campaign(self, campaign):
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'''
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finish_campaign
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attempts to execute all remaining payment to non-primary receivers
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return value: returns a list of transactions with the status of each receiver/transaction updated
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'''
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# QUESTION: to figure out which transactions are in a state in which the payment to the primary recipient is done but not to secondary recipient
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# Consider two possibilities: status=IPN_PAY_STATUS_INCOMPLETE or execution = EXECUTE_TYPE_CHAINED_DELAYED
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# which one? Let's try the second one
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# only allow incomplete transactions to go through again, if there is an error, intervention is needed
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transactions = Transaction.objects.filter(campaign=campaign, execution=EXECUTE_TYPE_CHAINED_DELAYED)
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for t in transactions:
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result = self.finish_transaction(t)
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# TO DO: update campaign status
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return transactions
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def cancel_campaign(self, campaign):
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'''
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cancel_campaign
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attempts to cancel active preapprovals related to the campaign
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return value: returns a list of transactions with the status of each receiver/transaction updated
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'''
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transactions = Transaction.objects.filter(campaign=campaign, status=TRANSACITON_STATUS_ACTIVE)
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for t in transactions:
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result = self.cancel_transaction(t)
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# TO DO: update campaign status
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return transactions
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def finish_transaction(self, transaction):
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'''
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finish_transaction
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calls the paypal API to execute payment to non-primary receivers
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transaction: the transaction we want to complete
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'''
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if transaction.execution != EXECUTE_TYPE_CHAINED_DELAYED:
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logger.error("FinishTransaction called with invalid execution type")
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return False
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# mark this transaction as executed
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transaction.date_executed = now()
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transaction.save()
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p = Finish(transaction)
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# Create a response for this
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envelope = p.envelope()
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if envelope:
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correlation = p.correlation_id()
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timestamp = p.timestamp()
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r = PaymentResponse.objects.create(api=p.url,
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correlation_id = correlation,
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timestamp = timestamp,
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info = p.raw_response,
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transaction=transaction)
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if p.success() and not p.error():
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logger.info("finish_transaction Success")
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return True
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else:
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transaction.error = p.error_string()
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transaction.save()
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logger.info("finish_transaction error " + p.error_string())
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return False
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def execute_transaction(self, transaction, receiver_list):
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'''
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execute_transaction
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executes a single pending transaction.
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transaction: the transaction object to execute
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receiver_list: a list of receivers for the transaction, in this format:
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[
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{'email':'email-1', 'amount':amount1},
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{'email':'email-2', 'amount':amount2}
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]
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return value: a bool indicating the success or failure of the process. Please check the transaction status
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after the IPN has completed for full information
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'''
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if len(transaction.receiver_set.all()) > 0:
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# we are re-submitting a transaction, wipe the old receiver list
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transaction.receiver_set.all().delete()
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transaction.create_receivers(receiver_list)
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# Mark as payment attempted so we will poll this periodically for status changes
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transaction.date_payment = now()
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transaction.save()
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p = Execute(transaction)
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# Create a response for this
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envelope = p.envelope()
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if envelope:
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correlation = p.correlation_id()
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timestamp = p.timestamp()
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r = PaymentResponse.objects.create(api=p.api(),
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correlation_id = correlation,
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timestamp = timestamp,
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info = p.raw_response,
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transaction=transaction)
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# We will update our transaction status when we receive the IPN
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if p.success() and not p.error():
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transaction.pay_key = p.key()
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transaction.save()
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logger.info("execute_transaction Success")
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return True
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else:
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transaction.error = p.error_string()
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transaction.save()
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logger.info("execute_transaction Error: " + p.error_string())
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return False
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def cancel_transaction(self, transaction):
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'''
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cancel
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cancels a pre-approved transaction
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return value: True if successful, false otherwise
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'''
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p = CancelPreapproval(transaction)
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# Create a response for this
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envelope = p.envelope()
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if envelope:
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correlation = p.correlation_id()
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timestamp = p.timestamp()
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r = PaymentResponse.objects.create(api=p.url,
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correlation_id = correlation,
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timestamp = timestamp,
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info = p.raw_response,
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transaction=transaction)
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if p.success() and not p.error():
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logger.info("Cancel Transaction " + str(transaction.id) + " Completed")
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return True
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else:
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transaction.error = p.error_string()
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transaction.save()
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logger.info("Cancel Transaction " + str(transaction.id) + " Failed with error: " + p.error_string())
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return False
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def authorize(self, currency, target, amount, expiry=None, campaign=None, list=None, user=None, return_url=None, cancel_url=None, anonymous=False, premium=None):
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'''
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authorize
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authorizes a set amount of money to be collected at a later date
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currency: a 3-letter paypal currency code, i.e. USD
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target: a defined target type, i.e. TARGET_TYPE_CAMPAIGN, TARGET_TYPE_LIST, TARGET_TYPE_NONE
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amount: the amount to authorize
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campaign: optional campaign object(to be set with TARGET_TYPE_CAMPAIGN)
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list: optional list object(to be set with TARGET_TYPE_LIST)
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user: optional user object
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return_url: url to redirect supporter to after a successful PayPal transaction
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cancel_url: url to send supporter to if support hits cancel while in middle of PayPal transaction
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anonymous: whether this pledge is anonymous
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premium: the premium selected by the supporter for this transaction
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return value: a tuple of the new transaction object and a re-direct url. If the process fails,
|
|
the redirect url will be None
|
|
|
|
'''
|
|
|
|
t = Transaction.objects.create(amount=amount,
|
|
max_amount=amount,
|
|
type=PAYMENT_TYPE_AUTHORIZATION,
|
|
execution = EXECUTE_TYPE_CHAINED_DELAYED,
|
|
target=target,
|
|
currency=currency,
|
|
status='NONE',
|
|
campaign=campaign,
|
|
list=list,
|
|
user=user,
|
|
anonymous=anonymous,
|
|
premium=premium
|
|
)
|
|
|
|
# we might want to not allow for a return_url or cancel_url to be passed in but calculated
|
|
# here because we have immediate access to the Transaction object.
|
|
|
|
if cancel_url is None:
|
|
cancel_path = "{0}?{1}".format(reverse('pledge_cancel'),
|
|
urllib.urlencode({'tid':t.id}))
|
|
cancel_url = urlparse.urljoin(settings.BASE_URL, cancel_path)
|
|
|
|
if return_url is None:
|
|
return_path = "{0}?{1}".format(reverse('pledge_complete'),
|
|
urllib.urlencode({'tid':t.id}))
|
|
return_url = urlparse.urljoin(settings.BASE_URL, return_path)
|
|
|
|
p = Preapproval(t, amount, expiry, return_url=return_url, cancel_url=cancel_url)
|
|
|
|
# Create a response for this
|
|
envelope = p.envelope()
|
|
|
|
if envelope:
|
|
r = PaymentResponse.objects.create(api=p.url,
|
|
correlation_id = p.correlation_id(),
|
|
timestamp = p.timestamp(),
|
|
info = p.raw_response,
|
|
transaction=t)
|
|
|
|
if p.success() and not p.error():
|
|
t.preapproval_key = p.key()
|
|
t.save()
|
|
|
|
url = p.next_url()
|
|
|
|
logger.info("Authorize Success: " + url)
|
|
return t, url
|
|
|
|
|
|
else:
|
|
t.error = p.error_string()
|
|
t.save()
|
|
logger.info("Authorize Error: " + p.error_string())
|
|
return t, None
|
|
|
|
def modify_transaction(self, transaction, amount, expiry=None, anonymous=None, premium=None, return_url=None, cancel_url=None):
|
|
'''
|
|
modify
|
|
|
|
Modifies a transaction. The only type of modification allowed is to the amount and expiration date
|
|
|
|
amount: the new amount
|
|
expiry: the new expiration date, or if none the current expiration date will be used
|
|
anonymous: new anonymous value; if None, then keep old value
|
|
premium: new premium selected; if None, then keep old value
|
|
return_url: the return URL after the preapproval(if needed)
|
|
cancel_url: the cancel url after the preapproval(if needed)
|
|
|
|
return value: True if successful, False otherwise. An optional second parameter for the forward URL if a new authorhization is needed
|
|
'''
|
|
|
|
# Can only modify the amount of a preapproval for now
|
|
if transaction.type != PAYMENT_TYPE_AUTHORIZATION:
|
|
logger.info("Error, attempt to modify an invalid transaction type")
|
|
return False, None
|
|
|
|
# Can only modify an active, pending transaction. If it is completed, we need to do a refund. If it is incomplete,
|
|
# then an IPN may be pending and we cannot touch it
|
|
if transaction.status != TRANSACTION_STATUS_ACTIVE:
|
|
logger.info("Error, attempt to modify a transaction that is not active")
|
|
return False, None
|
|
|
|
# if any of expiry, anonymous, or premium is None, use the existing value
|
|
if expiry is None:
|
|
expiry = transaction.date_expired
|
|
if anonymous is None:
|
|
anonymous = transaction.anonymous
|
|
if premium is None:
|
|
premium = transaction.premium
|
|
|
|
if amount > transaction.max_amount or expiry != transaction.date_expired:
|
|
|
|
# Start a new authorization for the new amount
|
|
|
|
t, url = self.authorize(transaction.currency,
|
|
transaction.target,
|
|
amount,
|
|
expiry,
|
|
transaction.campaign,
|
|
transaction.list,
|
|
transaction.user,
|
|
return_url,
|
|
cancel_url,
|
|
transaction.anonymous,
|
|
premium)
|
|
|
|
if t and url:
|
|
# Need to re-direct to approve the transaction
|
|
logger.info("New authorization needed, redirection to url %s" % url)
|
|
self.cancel_transaction(transaction)
|
|
return True, url
|
|
else:
|
|
# a problem in authorize
|
|
logger.info("Error, unable to start a new authorization")
|
|
return False, None
|
|
|
|
elif amount <= transaction.max_amount:
|
|
# Update transaction but leave the preapproval alone
|
|
transaction.amount = amount
|
|
transaction.anonymous = anonymous
|
|
transaction.premium = premium
|
|
|
|
transaction.save()
|
|
logger.info("Updated amount of transaction to %f" % amount)
|
|
return True, None
|
|
else:
|
|
# this shouldn't happen
|
|
return False, None
|
|
|
|
|
|
def refund_transaction(self, transaction):
|
|
'''
|
|
refund
|
|
|
|
Refunds a transaction. The money for the transaction may have gone to a number of places. We can only
|
|
refund money that is in our account
|
|
|
|
return value: True if successful, false otherwise
|
|
'''
|
|
|
|
# First check if a payment has been made. It is possible that some of the receivers may be incomplete
|
|
# We need to verify that the refund API will cancel these
|
|
if transaction.status != TRANSACTION_STATUS_COMPLETE_PRIMARY:
|
|
logger.info("Refund Transaction failed, invalid transaction status")
|
|
return False
|
|
|
|
p = RefundPayment(transaction)
|
|
|
|
# Create a response for this
|
|
envelope = p.envelope()
|
|
|
|
if envelope:
|
|
|
|
correlation = p.correlation_id()
|
|
timestamp = p.timestamp()
|
|
|
|
r = PaymentResponse.objects.create(api=p.url,
|
|
correlation_id = correlation,
|
|
timestamp = timestamp,
|
|
info = p.raw_response,
|
|
transaction=transaction)
|
|
|
|
if p.success() and not p.error():
|
|
logger.info("Refund Transaction " + str(transaction.id) + " Completed")
|
|
return True
|
|
|
|
else:
|
|
transaction.error = p.error_string()
|
|
transaction.save()
|
|
logger.info("Refund Transaction " + str(transaction.id) + " Failed with error: " + p.error_string())
|
|
return False
|
|
|
|
def pledge(self, currency, target, receiver_list, campaign=None, list=None, user=None, return_url=None, cancel_url=None, anonymous=False, premium=None):
|
|
'''
|
|
pledge
|
|
|
|
Performs an instant payment
|
|
|
|
currency: a 3-letter paypal currency code, i.e. USD
|
|
target: a defined target type, i.e. TARGET_TYPE_CAMPAIGN, TARGET_TYPE_LIST, TARGET_TYPE_NONE
|
|
receiver_list: a list of receivers for the transaction, in this format:
|
|
|
|
[
|
|
{'email':'email-1', 'amount':amount1},
|
|
{'email':'email-2', 'amount':amount2}
|
|
]
|
|
|
|
campaign: optional campaign object(to be set with TARGET_TYPE_CAMPAIGN)
|
|
list: optional list object(to be set with TARGET_TYPE_LIST)
|
|
user: optional user object
|
|
return_url: url to redirect supporter to after a successful PayPal transaction
|
|
cancel_url: url to send supporter to if support hits cancel while in middle of PayPal transaction
|
|
anonymous: whether this pledge is anonymous
|
|
premium: the premium selected by the supporter for this transaction
|
|
|
|
return value: a tuple of the new transaction object and a re-direct url. If the process fails,
|
|
the redirect url will be None
|
|
|
|
'''
|
|
|
|
amount = D('0.00')
|
|
|
|
# for chained payments, first amount is the total amount
|
|
amount = D(receiver_list[0]['amount'])
|
|
|
|
t = Transaction.objects.create(amount=amount,
|
|
max_amount=amount,
|
|
type=PAYMENT_TYPE_INSTANT,
|
|
execution=EXECUTE_TYPE_CHAINED_INSTANT,
|
|
target=target,
|
|
currency=currency,
|
|
status='NONE',
|
|
campaign=campaign,
|
|
list=list,
|
|
user=user,
|
|
date_payment=now(),
|
|
anonymous=anonymous,
|
|
premium=premium
|
|
)
|
|
|
|
t.create_receivers(receiver_list)
|
|
|
|
p = Pay(t,return_url=return_url, cancel_url=cancel_url)
|
|
|
|
# Create a response for this
|
|
envelope = p.envelope()
|
|
logger.info(envelope)
|
|
|
|
if envelope:
|
|
r = PaymentResponse.objects.create(api=p.api(),
|
|
correlation_id = p.correlation_id(),
|
|
timestamp = p.timestamp(),
|
|
info = p.raw_response,
|
|
transaction=t)
|
|
|
|
if p.success() and not p.error():
|
|
t.pay_key = p.key()
|
|
t.status = TRANSACTION_STATUS_CREATED
|
|
t.save()
|
|
|
|
if self.embedded:
|
|
url = p.embedded_url()
|
|
logger.info(url)
|
|
else:
|
|
url = p.next_url()
|
|
|
|
logger.info("Pledge Success: " + url)
|
|
return t, url
|
|
|
|
else:
|
|
t.error = p.error_string()
|
|
t.save()
|
|
logger.info("Pledge Error: %s" % p.error_string())
|
|
return t, None
|
|
|
|
|