8 def rsa_verify(message, signature, key):
9 from struct import pack
10 from hashlib import sha256
11 from sys import version_info
14 if version_info[0] == 2:
17 return x.encode('latin1')
18 assert(type(message) == type(b('')))
24 signature = pow(int(signature, 16), key[1], key[0])
27 raw_bytes.insert(0, pack("B", signature & 0xFF))
29 signature = (block_size - len(raw_bytes)) * b('\x00') + b('').join(raw_bytes)
30 if signature[0:2] != b('\x00\x01'):
32 signature = signature[2:]
33 if not b('\x00') in signature:
35 signature = signature[signature.index(b('\x00'))+1:]
36 if not signature.startswith(b('\x30\x31\x30\x0D\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x01\x05\x00\x04\x20')):
38 signature = signature[19:]
39 if signature != sha256(message).digest():
43 sys.stderr.write(u'Hi! We changed distribution method and now youtube-dl needs to update itself one more time.\n')
44 sys.stderr.write(u'This will only happen once. Simply press enter to go on. Sorry for the trouble!\n')
45 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')
49 filename = sys.argv[0]
51 UPDATE_URL = "http://rg3.github.io/youtube-dl/update/"
52 VERSION_URL = UPDATE_URL + 'LATEST_VERSION'
53 JSON_URL = UPDATE_URL + 'versions.json'
54 UPDATES_RSA_KEY = (0x9d60ee4d8f805312fdb15a62f87b95bd66177b91df176765d13514a0f1754bcd2057295c5b6f1d35daa6742c3ffc9a82d3e118861c207995a8031e151d863c9927e304576bc80692bc8e094896fcf11b66f3e29e04e3a71e9a11558558acea1840aec37fc396fb6b65dc81a1c4144e03bd1c011de62e3f1357b327d08426fe93, 65537)
56 if not os.access(filename, os.W_OK):
57 sys.exit('ERROR: no write permissions on %s' % filename)
59 exe = os.path.abspath(filename)
60 directory = os.path.dirname(exe)
61 if not os.access(directory, os.W_OK):
62 sys.exit('ERROR: no write permissions on %s' % directory)
65 versions_info = urllib2.urlopen(JSON_URL).read().decode('utf-8')
66 versions_info = json.loads(versions_info)
68 sys.exit(u'ERROR: can\'t obtain versions info. Please try again later.')
69 if not 'signature' in versions_info:
70 sys.exit(u'ERROR: the versions file is not signed or corrupted. Aborting.')
71 signature = versions_info['signature']
72 del versions_info['signature']
73 if not rsa_verify(json.dumps(versions_info, sort_keys=True), signature, UPDATES_RSA_KEY):
74 sys.exit(u'ERROR: the versions file signature is invalid. Aborting.')
76 version = versions_info['versions'][versions_info['latest']]
79 urlh = urllib2.urlopen(version['exe'][0])
80 newcontent = urlh.read()
82 except (IOError, OSError) as err:
83 sys.exit('ERROR: unable to download latest version')
85 newcontent_hash = hashlib.sha256(newcontent).hexdigest()
86 if newcontent_hash != version['exe'][1]:
87 sys.exit(u'ERROR: the downloaded file hash does not match. Aborting.')
90 with open(exe + '.new', 'wb') as outf:
91 outf.write(newcontent)
92 except (IOError, OSError) as err:
93 sys.exit(u'ERROR: unable to write the new version')
96 bat = os.path.join(directory, 'youtube-dl-updater.bat')
99 echo Updating youtube-dl...
100 ping 127.0.0.1 -n 5 -w 1000 > NUL
101 move /Y "%s.new" "%s"
103 \n""" % (exe, exe, bat))
107 except (IOError, OSError) as err:
108 sys.exit('ERROR: unable to overwrite current version')
110 sys.stderr.write(u'Done! Now you can run youtube-dl.\n')