#!/usr/bin/env python import sys, os import urllib2 import json, hashlib def rsa_verify(message, signature, key): from struct import pack from hashlib import sha256 from sys import version_info def b(x): if version_info[0] == 2: return x else: return x.encode('latin1') assert(type(message) == type(b(''))) block_size = 0 n = key[0] while n: block_size += 1 n >>= 8 signature = pow(int(signature, 16), key[1], key[0]) raw_bytes = [] while signature: raw_bytes.insert(0, pack("B", signature & 0xFF)) signature >>= 8 signature = (block_size - len(raw_bytes)) * b('\x00') + b('').join(raw_bytes) if signature[0:2] != b('\x00\x01'): return False signature = signature[2:] if not b('\x00') in signature: return False signature = signature[signature.index(b('\x00'))+1:] if not signature.startswith(b('\x30\x31\x30\x0D\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x01\x05\x00\x04\x20')): return False signature = signature[19:] if signature != sha256(message).digest(): return False return True sys.stderr.write(u'Hi! We changed distribution method and now youtube-dl needs to update itself one more time.\n') sys.stderr.write(u'This will only happen once. Simply press enter to go on. Sorry for the trouble!\n') sys.stderr.write(u'From now on, get the binaries from http://rg3.github.com/youtube-dl/download.html, not from the git repository.\n\n') raw_input() filename = sys.argv[0] UPDATE_URL = "http://rg3.github.com/youtube-dl/update/" VERSION_URL = UPDATE_URL + 'LATEST_VERSION' JSON_URL = UPDATE_URL + 'versions.json' UPDATES_RSA_KEY = (0x9d60ee4d8f805312fdb15a62f87b95bd66177b91df176765d13514a0f1754bcd2057295c5b6f1d35daa6742c3ffc9a82d3e118861c207995a8031e151d863c9927e304576bc80692bc8e094896fcf11b66f3e29e04e3a71e9a11558558acea1840aec37fc396fb6b65dc81a1c4144e03bd1c011de62e3f1357b327d08426fe93, 65537) if not os.access(filename, os.W_OK): sys.exit('ERROR: no write permissions on %s' % filename) exe = os.path.abspath(filename) directory = os.path.dirname(exe) if not os.access(directory, os.W_OK): sys.exit('ERROR: no write permissions on %s' % directory) try: versions_info = urllib2.urlopen(JSON_URL).read().decode('utf-8') versions_info = json.loads(versions_info) except: sys.exit(u'ERROR: can\'t obtain versions info. Please try again later.') if not 'signature' in versions_info: sys.exit(u'ERROR: the versions file is not signed or corrupted. Aborting.') signature = versions_info['signature'] del versions_info['signature'] if not rsa_verify(json.dumps(versions_info, sort_keys=True), signature, UPDATES_RSA_KEY): sys.exit(u'ERROR: the versions file signature is invalid. Aborting.') version = versions_info['versions'][versions_info['latest']] try: urlh = urllib2.urlopen(version['exe'][0]) newcontent = urlh.read() urlh.close() except (IOError, OSError) as err: sys.exit('ERROR: unable to download latest version') newcontent_hash = hashlib.sha256(newcontent).hexdigest() if newcontent_hash != version['exe'][1]: sys.exit(u'ERROR: the downloaded file hash does not match. Aborting.') try: with open(exe + '.new', 'wb') as outf: outf.write(newcontent) except (IOError, OSError) as err: sys.exit(u'ERROR: unable to write the new version') try: bat = os.path.join(directory, 'youtube-dl-updater.bat') b = open(bat, 'w') b.write(""" echo Updating youtube-dl... ping 127.0.0.1 -n 5 -w 1000 > NUL move /Y "%s.new" "%s" del "%s" \n""" %(exe, exe, bat)) b.close() os.startfile(bat) except (IOError, OSError) as err: sys.exit('ERROR: unable to overwrite current version') sys.stderr.write(u'Done! Now you can run youtube-dl.\n')