Raphaël G. Git Repositories - youtubedl/blob - youtube_dl/update.py

   1 import json
   2 import traceback
   3 import hashlib
   4 from zipimport import zipimporter
   5
   6 from .utils import *
   7 from .version import __version__
   8
   9 def rsa_verify(message, signature, key):
  10     from struct import pack
  11     from hashlib import sha256
  12     from sys import version_info
  13     def b(x):
  14         if version_info[0] == 2: return x
  15         else: return x.encode('latin1')
  16     assert(type(message) == type(b('')))
  17     block_size = 0
  18     n = key[0]
  19     while n:
  20         block_size += 1
  21         n >>= 8
  22     signature = pow(int(signature, 16), key[1], key[0])
  23     raw_bytes = []
  24     while signature:
  25         raw_bytes.insert(0, pack("B", signature & 0xFF))
  26         signature >>= 8
  27     signature = (block_size - len(raw_bytes)) * b('\x00') + b('').join(raw_bytes)
  28     if signature[0:2] != b('\x00\x01'): return False
  29     signature = signature[2:]
  30     if not b('\x00') in signature: return False
  31     signature = signature[signature.index(b('\x00'))+1:]
  32     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
  33     signature = signature[19:]
  34     if signature != sha256(message).digest(): return False
  35     return True
  36
  37 def update_self(to_screen, verbose, filename):
  38     """Update the program file with the latest version from the repository"""
  39
  40     UPDATE_URL = "http://rg3.github.io/youtube-dl/update/"
  41     VERSION_URL = UPDATE_URL + 'LATEST_VERSION'
  42     JSON_URL = UPDATE_URL + 'versions.json'
  43     UPDATES_RSA_KEY = (0x9d60ee4d8f805312fdb15a62f87b95bd66177b91df176765d13514a0f1754bcd2057295c5b6f1d35daa6742c3ffc9a82d3e118861c207995a8031e151d863c9927e304576bc80692bc8e094896fcf11b66f3e29e04e3a71e9a11558558acea1840aec37fc396fb6b65dc81a1c4144e03bd1c011de62e3f1357b327d08426fe93, 65537)
  44
  45
  46     if not isinstance(globals().get('__loader__'), zipimporter) and not hasattr(sys, "frozen"):
  47         to_screen(u'It looks like you installed youtube-dl with pip, setup.py or a tarball. Please use that to update.')
  48         return
  49
  50     # Check if there is a new version
  51     try:
  52         newversion = compat_urllib_request.urlopen(VERSION_URL).read().decode('utf-8').strip()
  53     except:
  54         if verbose: to_screen(compat_str(traceback.format_exc()))
  55         to_screen(u'ERROR: can\'t find the current version. Please try again later.')
  56         return
  57     if newversion == __version__:
  58         to_screen(u'youtube-dl is up-to-date (' + __version__ + ')')
  59         return
  60
  61     # Download and check versions info
  62     try:
  63         versions_info = compat_urllib_request.urlopen(JSON_URL).read().decode('utf-8')
  64         versions_info = json.loads(versions_info)
  65     except:
  66         if verbose: to_screen(compat_str(traceback.format_exc()))
  67         to_screen(u'ERROR: can\'t obtain versions info. Please try again later.')
  68         return
  69     if not 'signature' in versions_info:
  70         to_screen(u'ERROR: the versions file is not signed or corrupted. Aborting.')
  71         return
  72     signature = versions_info['signature']
  73     del versions_info['signature']
  74     if not rsa_verify(json.dumps(versions_info, sort_keys=True).encode('utf-8'), signature, UPDATES_RSA_KEY):
  75         to_screen(u'ERROR: the versions file signature is invalid. Aborting.')
  76         return
  77
  78     to_screen(u'Updating to version ' + versions_info['latest'] + '...')
  79     version = versions_info['versions'][versions_info['latest']]
  80
  81     print_notes(to_screen, versions_info['versions'])
  82
  83     if not os.access(filename, os.W_OK):
  84         to_screen(u'ERROR: no write permissions on %s' % filename)
  85         return
  86
  87     # Py2EXE
  88     if hasattr(sys, "frozen"):
  89         exe = os.path.abspath(filename)
  90         directory = os.path.dirname(exe)
  91         if not os.access(directory, os.W_OK):
  92             to_screen(u'ERROR: no write permissions on %s' % directory)
  93             return
  94
  95         try:
  96             urlh = compat_urllib_request.urlopen(version['exe'][0])
  97             newcontent = urlh.read()
  98             urlh.close()
  99         except (IOError, OSError) as err:
 100             if verbose: to_screen(compat_str(traceback.format_exc()))
 101             to_screen(u'ERROR: unable to download latest version')
 102             return
 103
 104         newcontent_hash = hashlib.sha256(newcontent).hexdigest()
 105         if newcontent_hash != version['exe'][1]:
 106             to_screen(u'ERROR: the downloaded file hash does not match. Aborting.')
 107             return
 108
 109         try:
 110             with open(exe + '.new', 'wb') as outf:
 111                 outf.write(newcontent)
 112         except (IOError, OSError) as err:
 113             if verbose: to_screen(compat_str(traceback.format_exc()))
 114             to_screen(u'ERROR: unable to write the new version')
 115             return
 116
 117         try:
 118             bat = os.path.join(directory, 'youtube-dl-updater.bat')
 119             b = open(bat, 'w')
 120             b.write("""
 121 echo Updating youtube-dl...
 122 ping 127.0.0.1 -n 5 -w 1000 > NUL
 123 move /Y "%s.new" "%s"
 124 del "%s"
 125             \n""" %(exe, exe, bat))
 126             b.close()
 127
 128             os.startfile(bat)
 129         except (IOError, OSError) as err:
 130             if verbose: to_screen(compat_str(traceback.format_exc()))
 131             to_screen(u'ERROR: unable to overwrite current version')
 132             return
 133
 134     # Zip unix package
 135     elif isinstance(globals().get('__loader__'), zipimporter):
 136         try:
 137             urlh = compat_urllib_request.urlopen(version['bin'][0])
 138             newcontent = urlh.read()
 139             urlh.close()
 140         except (IOError, OSError) as err:
 141             if verbose: to_screen(compat_str(traceback.format_exc()))
 142             to_screen(u'ERROR: unable to download latest version')
 143             return
 144
 145         newcontent_hash = hashlib.sha256(newcontent).hexdigest()
 146         if newcontent_hash != version['bin'][1]:
 147             to_screen(u'ERROR: the downloaded file hash does not match. Aborting.')
 148             return
 149
 150         try:
 151             with open(filename, 'wb') as outf:
 152                 outf.write(newcontent)
 153         except (IOError, OSError) as err:
 154             if verbose: to_screen(compat_str(traceback.format_exc()))
 155             to_screen(u'ERROR: unable to overwrite current version')
 156             return
 157
 158     to_screen(u'Updated youtube-dl. Restart youtube-dl to use the new version.')
 159
 160 def get_notes(versions, fromVersion):
 161     notes = []
 162     for v,vdata in sorted(versions.items()):
 163         if v > fromVersion:
 164             notes.extend(vdata.get('notes', []))
 165     return notes
 166
 167 def print_notes(to_screen, versions, fromVersion=__version__):
 168     notes = get_notes(versions, fromVersion)
 169     if notes:
 170         to_screen(u'PLEASE NOTE:')
 171         for note in notes:
 172             to_screen(note)