addons-server/apps/paypal/__init__.py

285 строки
9.9 KiB
Python
Исходник Обычный вид История

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import contextlib
import socket
import urllib
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import urllib2
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import urlparse
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import re
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from django.conf import settings
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from django.utils.http import urlencode
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import commonware.log
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from statsd import statsd
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from amo.helpers import absolutify
from amo.urlresolvers import reverse
class PaypalError(Exception):
id = None
class AuthError(PaypalError):
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pass
errors = {'520003': AuthError}
paypal_log = commonware.log.getLogger('z.paypal')
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def should_ignore_paypal():
"""
Returns whether to skip PayPal communications for development
purposes or not.
"""
return settings.DEBUG and 'sandbox' not in settings.PAYPAL_PERMISSIONS_URL
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def get_paykey(data):
"""
Gets a paykey from Paypal. Need to pass in the following in data:
pattern: the reverse pattern to resolve
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email: who the money is going to (required)
amount: the amount of money (required)
ip: ip address of end user (required)
uuid: contribution_uuid (required)
memo: any nice message
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qs: anything you want to append to the complete or cancel(optional)
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"""
complete = reverse(data['pattern'], args=[data['slug'], 'complete'])
cancel = reverse(data['pattern'], args=[data['slug'], 'cancel'])
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qs = {'uuid': data['uuid']}
if 'qs' in data:
qs.update(data['qs'])
uuid_qs = urllib.urlencode(qs)
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paypal_data = {
'actionType': 'PAY',
'requestEnvelope.errorLanguage': 'US',
'currencyCode': 'USD',
'cancelUrl': absolutify('%s?%s' % (cancel, uuid_qs)),
'returnUrl': absolutify('%s?%s' % (complete, uuid_qs)),
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'receiverList.receiver(0).email': data['email'],
'receiverList.receiver(0).amount': data['amount'],
'receiverList.receiver(0).invoiceID': 'mozilla-%s' % data['uuid'],
'receiverList.receiver(0).primary': 'TRUE',
'receiverList.receiver(0).paymentType': 'DIGITALGOODS',
'trackingId': data['uuid']}
if data.get('ipn', True):
paypal_data['ipnNotificationUrl'] = absolutify(reverse('amo.paypal'))
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if data.get('memo'):
paypal_data['memo'] = data['memo']
with statsd.timer('paypal.paykey.retrieval'):
try:
response = _call(settings.PAYPAL_PAY_URL + 'Pay', paypal_data,
ip=data['ip'])
except AuthError, error:
paypal_log.error('Authentication error: %s' % error)
raise
return response['payKey']
def check_purchase(paykey):
"""
When a purchase is complete checks paypal that the purchase has gone
through.
"""
with statsd.timer('paypal.payment.details'):
try:
response = _call(settings.PAYPAL_PAY_URL + 'PaymentDetails',
{'payKey': paykey})
except PaypalError:
paypal_log.error('Payment details error', exc_info=True)
return False
return response['status']
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def refund(txnid):
"""
Refund a payment.
Arguments: transaction id of payment to refund
Returns: A list of dicts containing the refund info for each
receiver of the original payment.
"""
OK_STATUSES = ['REFUNDED', 'REFUNDED_PENDING']
with statsd.timer('paypal.payment.refund'):
try:
response = _call(settings.PAYPAL_PAY_URL + 'Refund',
{'transactionID': txnid})
except PaypalError:
paypal_log.error('Refund error', exc_info=True)
raise
responses = []
for k in response:
g = re.match('refundInfoList.refundInfo\((\d+)\).(.*)', k)
if g:
i = int(g.group(1))
subkey = g.group(2)
while i >= len(responses):
responses.append({})
responses[i][subkey] = response[k]
for d in responses:
status = '%s: %s' % (d['receiver.email'], d['refundStatus'])
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if d['refundStatus'] not in OK_STATUSES:
raise PaypalError('Bad refund status for %s' % status)
paypal_log.debug('Refund done for transaction %s, status: %s'
% (txnid, status))
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return responses
def check_refund_permission(token):
"""
Asks PayPal whether the PayPal ID for this account has granted
refund permission to us.
"""
# This is set in settings_test so we don't start calling PayPal
# by accident. Explicitly set this in your tests.
if not settings.PAYPAL_PERMISSIONS_URL:
return False
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paypal_log.debug('Checking refund permission for token: %s..'
% token[:10])
try:
with statsd.timer('paypal.permissions.refund'):
r = _call(settings.PAYPAL_PERMISSIONS_URL + 'GetPermissions',
{'token': token})
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except PaypalError, error:
paypal_log.debug('Paypal returned error for token: %s.. error: %s'
% (token[:10], error))
return False
# in the future we may ask for other permissions so let's just
# make sure REFUND is one of them.
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paypal_log.debug('Paypal returned permissions for token: %s.. perms: %s'
% (token[:10], r))
return 'REFUND' in [v for (k, v) in r.iteritems()
if k.startswith('scope')]
def refund_permission_url(addon):
"""
Send permissions request to PayPal for refund privileges on
this addon's paypal account. Returns URL on PayPal site to visit.
"""
# This is set in settings_test so we don't start calling PayPal
# by accident. Explicitly set this in your tests.
if not settings.PAYPAL_PERMISSIONS_URL:
return ''
paypal_log.debug('Getting refund permission URL for addon: %s' % addon.pk)
with statsd.timer('paypal.permissions.url'):
url = reverse('devhub.addons.acquire_refund_permission',
args=[addon.slug])
try:
r = _call(settings.PAYPAL_PERMISSIONS_URL + 'RequestPermissions',
{'scope': 'REFUND', 'callback': absolutify(url)})
except PaypalError, e:
paypal_log.debug('Error on refund permission URL addon: %s, %s' %
(addon.pk, e))
if 'malformed' in str(e):
# PayPal is very picky about where they redirect users to.
# If you try and create a PayPal permissions URL on a
# zamboni that has a non-standard port number or a
# non-standard TLD, it will blow up with an error. We need
# to be able to at least visit these pages and alter them
# in dev, so this will give you a broken token that doesn't
# work, but at least the page will function.
r = {'token': 'wont-work-paypal-doesnt-like-your-domain'}
else:
raise
return (settings.PAYPAL_CGI_URL +
'?cmd=_grant-permission&request_token=%s' % r['token'])
def get_permissions_token(request_token, verification_code):
"""
Send request for permissions token, after user has granted the
requested permissions via the PayPal page we redirected them to.
"""
with statsd.timer('paypal.permissions.token'):
r = _call(settings.PAYPAL_PERMISSIONS_URL + 'GetAccessToken',
{'token': request_token, 'verifier': verification_code})
return r['token']
def _call(url, paypal_data, ip=None):
request = urllib2.Request(url)
if 'requestEnvelope.errorLanguage' not in paypal_data:
paypal_data['requestEnvelope.errorLanguage'] = 'en_US'
for key, value in [
('security-userid', settings.PAYPAL_EMBEDDED_AUTH['USER']),
('security-password', settings.PAYPAL_EMBEDDED_AUTH['PASSWORD']),
('security-signature', settings.PAYPAL_EMBEDDED_AUTH['SIGNATURE']),
('application-id', settings.PAYPAL_APP_ID),
('request-data-format', 'NV'),
('response-data-format', 'NV')]:
request.add_header('X-PAYPAL-%s' % key.upper(), value)
if ip:
request.add_header('X-PAYPAL-DEVICE-IPADDRESS', ip)
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opener = urllib2.build_opener()
try:
with socket_timeout(10):
feeddata = opener.open(request, urlencode(paypal_data)).read()
except Exception, error:
paypal_log.error('HTTP Error: %s' % error)
raise
response = dict(urlparse.parse_qsl(feeddata))
if 'error(0).errorId' in response:
error = errors.get(response['error(0).errorId'], PaypalError)
paypal_log.error('Paypal Error: %s' % response['error(0).message'])
raise error(response['error(0).message'])
return response
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def check_paypal_id(name):
"""
Use the button API to check if name is a valid Paypal id.
Returns bool(valid), str(msg). msg will be None if there wasn't an error.
"""
d = dict(version=settings.PAYPAL_API_VERSION,
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buttoncode='cleartext',
buttontype='donate',
method='BMCreateButton',
l_buttonvar0='business=%s' % name)
# TODO(andym): remove this once this is all live and settled down.
if hasattr(settings, 'PAYPAL_CGI_AUTH'):
d['user'] = settings.PAYPAL_CGI_AUTH['USER']
d['pwd'] = settings.PAYPAL_CGI_AUTH['PASSWORD']
d['signature'] = settings.PAYPAL_CGI_AUTH['SIGNATURE']
else:
# In production if PAYPAL_CGI_AUTH doesn't get defined yet,
# fall back to the existing values.
d.update(dict(user=settings.PAYPAL_USER,
pwd=settings.PAYPAL_PASSWORD,
signature=settings.PAYPAL_SIGNATURE))
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with socket_timeout(10):
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r = urllib.urlopen(settings.PAYPAL_API_URL, urlencode(d))
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response = dict(urlparse.parse_qsl(r.read()))
valid = response['ACK'] == 'Success'
msg = None if valid else response['L_LONGMESSAGE0']
return valid, msg
@contextlib.contextmanager
def socket_timeout(timeout):
"""Context manager to temporarily set the default socket timeout."""
old = socket.getdefaulttimeout()
try:
yield
finally:
socket.setdefaulttimeout(old)