From: Antonio Ospite Date: Fri, 15 Jan 2016 21:24:20 +0000 (+0100) Subject: Add a playready_experiment.py to play with ProtectionHeader X-Git-Url: https://git.ao2.it/smooth-dl.git/commitdiff_plain/7078eda19d19797edfe1a909a4f9c939f0871b7e?hp=e5fcd65651d541ee43bd92c7e5eec1a721f2cc0c Add a playready_experiment.py to play with ProtectionHeader Just a script to explore the format of the ProtectionHeader element. --- diff --git a/playready_experiment.py b/playready_experiment.py new file mode 100755 index 0000000..ed26906 --- /dev/null +++ b/playready_experiment.py @@ -0,0 +1,101 @@ +#!/usr/bin/env python3 +# +# playready_experiment.py - Example of SmoothStreaming PlayReady authentication +# +# Copyright (C) 2016 Antonio Ospite +# +# This program is free software: you can redistribute it and/or modify it under +# the terms of the GNU General Public License as published by the Free Software +# Foundation, either version 3 of the License, or (at your option) any later +# version. +# +# This program is distributed in the hope that it will be useful, but WITHOUT +# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more +# details. +# +# You should have received a copy of the GNU General Public License along with +# this program. If not, see . +# +# +# Experiment on how to use the ProtectionHeader element in SmoothSTreaming +# manifest files. +# +# The code is just a demonstration of how to decode the ProtectionHeader element +# content, it is not supposed to do nothing actually useful. +# +# Based on the PlayReady Header Object specification: +# http://download.microsoft.com/download/1/4/7/1475C862-6B67-44B2-AF31-ABC83EA68292/PlayReady%20Header%20Object%20(7-2-2012).docx + +import base64 +import struct +import sys +import xml.etree.ElementTree as etree + +from pysimplesoap.client import SoapClient +from pysimplesoap.simplexml import SimpleXMLElement + + +def get_right_management_header(protection_header_text): + play_ready_header_objects = base64.b64decode(protection_header_text) + + offset = 0 + + field_size = 4 + total_size = struct.unpack("\n" % sys.argv[0]) + sys.exit(1) + + manifest_filename = sys.argv[1] + + manifest = etree.parse(manifest_filename) + protection_header = manifest.find(".//Protection/ProtectionHeader") + + challenge = get_right_management_header(protection_header.text) + + challenge_xml = etree.fromstring(challenge) + la_url = challenge_xml.find(".//{http://schemas.microsoft.com/DRM/2007/03/PlayReadyHeader}LA_URL").text + + client = SoapClient( + location=la_url, + action='http://schemas.microsoft.com/DRM/2007/03/protocols/', + soap_ns='soap', trace=True, ns=False) + + params = SimpleXMLElement("""""" + + challenge + + """""") + + response = client.call('AcquireLicense', params) + print(response) + +if __name__ == "__main__": + main()