Changeset View

Standalone View

Property	Old Value	New Value
File Mode	null	100755

				#!/usr/bin/python3
				"""
				This is the implementation of a (postfix) MTA policy service to enforce the
				Sender Policy Framework.
				"""

				import json
				import time
				import sys

				import requests


				def read_request_input():
				"""
				Read a single policy request from sys.stdin, and return a dictionary
				containing the request.
				"""
				start_time = time.time()

				policy_request = {}
				end_of_request = False

				while not end_of_request:
				if (time.time() - start_time) >= 10:
				sys.exit(0)

				request_line = sys.stdin.readline()

				if request_line.strip() == '':
				if 'request' in policy_request:
				end_of_request = True
				else:
				request_line = request_line.strip()
				request_key = request_line.split('=')[0]
				request_value = '='.join(request_line.split('=')[1:])

				policy_request[request_key] = request_value

				return policy_request


				if __name__ == "__main__":
				URL = 'https://services.kolabnow.com/api/webhooks/spf'

				# Start the work
				while True:
				REQUEST = read_request_input()

				try:
				RESPONSE = requests.post(
				URL,
				data=REQUEST,
				verify=True
				)
				# pylint: disable=broad-except
				except Exception:
				print("action=DEFER_IF_PERMIT Temporary error, try again later.")
				sys.exit(1)

				try:
				R = json.loads(RESPONSE.text)
				# pylint: disable=broad-except
				except Exception:
				sys.exit(1)

				if 'prepend' in R:
				for prepend in R['prepend']:
				print("action=PREPEND {0}".format(prepend))

				if RESPONSE.ok:
				print("action={0}\n".format(R['response']))

				sys.stdout.flush()
				else:
				print("action={0} {1}\n".format(R['response'], R['reason']))

				sys.stdout.flush()

				sys.exit(0)