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pyNPU.py
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pyNPU.py
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#!/usr/bin/env python3
# for exiting etc
import sys
# used for command line argument parsing
import argparse
# for creating the checksum based on hmac key
import hashlib
import hmac
# used to get data from Sony servers
import requests
# use lxml for CDATA parsing
from lxml import etree as xml
from lxml import html
# return codes
# 0 - success
# 1 - user errors
# 2 - no update available
# hmac key from http://wololo.net/talk/viewtopic.php?f=54&t=44091
# thank you Proxima
key = bytes.fromhex("E5E278AA1EE34082A088279C83F9BBC806821C52F2AB5D2B4ABD995450355114")
program_version = "0.0.1"
## script parameter handling
parser = argparse.ArgumentParser(prog='pyNPU', usage='%(prog)s [options]')
parser.add_argument('--changelog', '-c', action='store_true', help="Print changelog to stdout")
parser.add_argument('--bbcode', '-b', action='store_true', help="Change changelog to format to BB Code")
parser.add_argument('--link', '-l', action='store_true', help="Print download link of the latest update")
parser.add_argument('--name', '-n', action='store_true', help="Print the name of the game (same as in the sfo)")
parser.add_argument('--all', '-a', action='store_true', help="Print all updates available")
parser.add_argument('--title-id', '-t', nargs=1, help="specify the Title ID of game")
parser.add_argument('--version', '-v', action='version', version='%(prog)s v0.0.1')
args = parser.parse_args()
if not args.title_id:
print("Error: No Title ID given.")
sys.exit(1)
else:
title = args.title_id[0]
# create the checksum for the url
hmac_sha256 = hmac.new(key, msg=("np_" + title).encode('utf-8'), digestmod=hashlib.sha256).hexdigest()
# create url from title id and checksum
update_url = "http://gs-sec.ww.np.dl.playstation.net/pl/np/%s/%s/%s-ver.xml" % (title, hmac_sha256, title)
# get the request
r = requests.get(update_url, verify=False)
if r.status_code == 404:
print("No update for this game available")
sys.exit(2)
r.close()
try:
xml.fromstring(r.content)
except:
print("No update for this game available")
sys.exit(2)
# get python object from XML
update_xml = xml.fromstring(r.content)
# make sure several arguments cannot be combined
if args.changelog and args.link:
print('Error: Cannot combine parameter "changelog" and "link"')
sys.exit(1)
elif args.changelog and args.all:
print('Error: Cannot combine parameter "changelog" and "all"')
sys.exit(1)
elif args.bbcode and args.link:
print('Error: Cannot combine parameter "bbcode" and "link"')
sys.exit(1)
elif args.name and (args.link or args.changelog or args.bbcode or args.all):
print('Error: Cannot combine parameter "name" with others except "title-id"')
sys.exit(1)
elif args.title_id and not (args.link or args.changelog or args.name):
print('Error: Cannot use parameter "title-id" without "changelog, "link" or "name"')
sys.exit(1)
elif args.bbcode and not args.changelog:
print('Error: Cannot use parameter "bbcode" without "changelog"')
sys.exit(1)
# not sure if the if the check is really needed
if update_xml.get('status') == "alive":
# get changelog
if args.changelog:
# get the url for the changelog and download it into change_url
for changeinfo in update_xml.iter('changeinfo'):
change_url = changeinfo.get('url')
r = requests.get(change_url)
### create xml parser and make sure CDATA won't be stripped
xmlparser = xml.XMLParser(strip_cdata=False)
changelog_xml = xml.XML(r.content, xmlparser)
r.close()
for version in changelog_xml:
# output simple bbcodes
if args.bbcode:
print('== ' + version.get('app_ver') + ' ==')
# parse content into a html object and iterate of all elements in html body
for element in html.document_fromstring(version.text.replace('\t','')).body.getchildren():
if element.tag == 'b':
print('[b]' + element.text_content() + '[/b]')
elif element.tag == 'ul':
for list in element.getchildren():
print("[*] " + list.text_content())
elif element.tag == 'li':
print("[*] " + element.text_content())
elif element.tag == 'p':
print(element.text_content())
else:
print(version.get('app_ver'))
# parse content into a html object and iterate of all elements in html body
for element in html.document_fromstring(version.text.replace('\t','')).body.getchildren():
if element.tag == 'b':
print(element.text_content())
elif element.tag == 'ul':
for list in element.getchildren():
print("- " + list.text_content())
elif element.tag == 'li':
print("- " + element.text_content())
elif element.tag == 'p':
print(element.text_content())
elif args.link:
if args.all:
for package in update_xml.iter('package'):
# check if element has 'hybrid_package' as children
if package.find('hybrid_package') is not None:
for subpackage in package:
# print hybrid_package link when available
if subpackage.tag == 'hybrid_package':
print(subpackage.get('url'))
else:
print(package.get('url'))
else:
for package in update_xml.iter('package'):
if 'version' not in locals():
version = float(package.get('version'))
else:
if version < float(package.get('version')):
version = float(package.get('version'))
for package in update_xml.iter('package'):
if float(package.get('version')) == version:
# check if element has 'hybrid_package' as children
if package.find('hybrid_package') is not None:
for subpackage in package:
# print hybrid_package link when available
if subpackage.tag == 'hybrid_package':
print(subpackage.get('url'))
else:
print(package.get('url'))
elif args.name:
for name in update_xml.iter('title'):
print(name.text)