mirror of https://github.com/zulip/zulip.git
72 lines
2.7 KiB
Python
72 lines
2.7 KiB
Python
from __future__ import absolute_import
|
|
|
|
from zerver.models import UserProfile, AppleDeviceToken
|
|
from zerver.lib.timestamp import timestamp_to_datetime
|
|
from zerver.decorator import statsd_increment
|
|
|
|
from apnsclient import Session, Connection, Message, APNs
|
|
|
|
from django.conf import settings
|
|
|
|
import base64, binascii, logging, os
|
|
|
|
# Maintain a long-lived Session object to avoid having to re-SSL-handshake
|
|
# for each request
|
|
session = Session()
|
|
connection = None
|
|
if os.path.exists(settings.APNS_CERT_FILE):
|
|
connection = session.get_connection(settings.APNS_SANDBOX, cert_file=settings.APNS_CERT_FILE)
|
|
|
|
def num_push_devices_for_user(user_profile):
|
|
return AppleDeviceToken.objects.filter(user=user_profile).count()
|
|
|
|
# We store the token as b64, but apns-client wants hex strings
|
|
def b64_to_hex(data):
|
|
return binascii.hexlify(base64.b64decode(data))
|
|
|
|
def hex_to_b64(data):
|
|
return base64.b64encode(binascii.unhexlify(data))
|
|
|
|
# Send a push notification to the desired clients
|
|
# extra_data is a dict that will be passed to the
|
|
# mobile app
|
|
@statsd_increment("apple_push_notification")
|
|
def send_apple_push_notification(user, alert, **extra_data):
|
|
# Sends a push notifications to all the PushClients
|
|
# Only Apple Push Notifications clients are supported at the moment
|
|
tokens = [b64_to_hex(device.token) for device in AppleDeviceToken.objects.filter(user=user)]
|
|
|
|
logging.info("Sending apple push notification to devices: %s" % (tokens,))
|
|
message = Message(tokens, alert=alert, **extra_data)
|
|
|
|
apns_client = APNs(connection)
|
|
ret = apns_client.send(message)
|
|
if not ret:
|
|
logging.warning("Failed to send push notification for clients %s" % (tokens,))
|
|
return
|
|
|
|
for token, reason in ret.failed.items():
|
|
code, errmsg = reason
|
|
logging.warning("Failed to deliver APNS notification to %s, reason: %s" % (token, errmsg))
|
|
|
|
# Check failures not related to devices.
|
|
for code, errmsg in ret.errors:
|
|
logging.warning("Unknown error when delivering APNS: %s" % (errmsg,))
|
|
|
|
if ret.needs_retry():
|
|
# TODO handle retrying by potentially scheduling a background job
|
|
# or re-queueing
|
|
logging.warning("APNS delivery needs a retry but ignoring")
|
|
|
|
# NOTE: This is used by the check_apns_tokens manage.py command. Do not call it otherwise, as the
|
|
# feedback() call can take up to 15s
|
|
def check_apns_feedback():
|
|
apns_client = APNs(connection, tail_timeout=20)
|
|
|
|
for token, since in apns_client.feedback():
|
|
since_date = timestamp_to_datetime(since)
|
|
logging.info("Found unavailable token %s, unavailable since %s" % (token, since_date))
|
|
|
|
AppleDeviceToken.objects.filter(token=hex_to_b64(token), last_updates__lt=since_date).delete()
|
|
logging.info("Finished checking feedback for stale tokens")
|