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

   1 from __future__ import unicode_literals
   2
   3 import io
   4 import json
   5 import traceback
   6 import hashlib
   7 import os
   8 import subprocess
   9 import sys
  10 from zipimport import zipimporter
  11
  12 from .compat import (
  13     compat_str,
  14     compat_urllib_request,
  15 )
  16 from .version import __version__
  17
  18
  19 def rsa_verify(message, signature, key):
  20     from struct import pack
  21     from hashlib import sha256
  22
  23     assert isinstance(message, bytes)
  24     block_size = 0
  25     n = key[0]
  26     while n:
  27         block_size += 1
  28         n >>= 8
  29     signature = pow(int(signature, 16), key[1], key[0])
  30     raw_bytes = []
  31     while signature:
  32         raw_bytes.insert(0, pack("B", signature & 0xFF))
  33         signature >>= 8
  34     signature = (block_size - len(raw_bytes)) * b'\x00' + b''.join(raw_bytes)
  35     if signature[0:2] != b'\x00\x01':
  36         return False
  37     signature = signature[2:]
  38     if b'\x00' not in signature:
  39         return False
  40     signature = signature[signature.index(b'\x00') + 1:]
  41     if not signature.startswith(b'\x30\x31\x30\x0D\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x01\x05\x00\x04\x20'):
  42         return False
  43     signature = signature[19:]
  44     if signature != sha256(message).digest():
  45         return False
  46     return True
  47
  48
  49 def update_self(to_screen, verbose):
  50     """Update the program file with the latest version from the repository"""
  51
  52     UPDATE_URL = "http://rg3.github.io/youtube-dl/update/"
  53     VERSION_URL = UPDATE_URL + 'LATEST_VERSION'
  54     JSON_URL = UPDATE_URL + 'versions.json'
  55     UPDATES_RSA_KEY = (0x9d60ee4d8f805312fdb15a62f87b95bd66177b91df176765d13514a0f1754bcd2057295c5b6f1d35daa6742c3ffc9a82d3e118861c207995a8031e151d863c9927e304576bc80692bc8e094896fcf11b66f3e29e04e3a71e9a11558558acea1840aec37fc396fb6b65dc81a1c4144e03bd1c011de62e3f1357b327d08426fe93, 65537)
  56
  57     if not isinstance(globals().get('__loader__'), zipimporter) and not hasattr(sys, "frozen"):
  58         to_screen('It looks like you installed youtube-dl with a package manager, pip, setup.py or a tarball. Please use that to update.')
  59         return
  60
  61     # Check if there is a new version
  62     try:
  63         newversion = compat_urllib_request.urlopen(VERSION_URL).read().decode('utf-8').strip()
  64     except:
  65         if verbose:
  66             to_screen(compat_str(traceback.format_exc()))
  67         to_screen('ERROR: can\'t find the current version. Please try again later.')
  68         return
  69     if newversion == __version__:
  70         to_screen('youtube-dl is up-to-date (' + __version__ + ')')
  71         return
  72
  73     # Download and check versions info
  74     try:
  75         versions_info = compat_urllib_request.urlopen(JSON_URL).read().decode('utf-8')
  76         versions_info = json.loads(versions_info)
  77     except:
  78         if verbose:
  79             to_screen(compat_str(traceback.format_exc()))
  80         to_screen('ERROR: can\'t obtain versions info. Please try again later.')
  81         return
  82     if not 'signature' in versions_info:
  83         to_screen('ERROR: the versions file is not signed or corrupted. Aborting.')
  84         return
  85     signature = versions_info['signature']
  86     del versions_info['signature']
  87     if not rsa_verify(json.dumps(versions_info, sort_keys=True).encode('utf-8'), signature, UPDATES_RSA_KEY):
  88         to_screen('ERROR: the versions file signature is invalid. Aborting.')
  89         return
  90
  91     version_id = versions_info['latest']
  92
  93     def version_tuple(version_str):
  94         return tuple(map(int, version_str.split('.')))
  95     if version_tuple(__version__) >= version_tuple(version_id):
  96         to_screen('youtube-dl is up to date (%s)' % __version__)
  97         return
  98
  99     to_screen('Updating to version ' + version_id + ' ...')
 100     version = versions_info['versions'][version_id]
 101
 102     print_notes(to_screen, versions_info['versions'])
 103
 104     filename = sys.argv[0]
 105     # Py2EXE: Filename could be different
 106     if hasattr(sys, "frozen") and not os.path.isfile(filename):
 107         if os.path.isfile(filename + '.exe'):
 108             filename += '.exe'
 109
 110     if not os.access(filename, os.W_OK):
 111         to_screen('ERROR: no write permissions on %s' % filename)
 112         return
 113
 114     # Py2EXE
 115     if hasattr(sys, "frozen"):
 116         exe = os.path.abspath(filename)
 117         directory = os.path.dirname(exe)
 118         if not os.access(directory, os.W_OK):
 119             to_screen('ERROR: no write permissions on %s' % directory)
 120             return
 121
 122         try:
 123             urlh = compat_urllib_request.urlopen(version['exe'][0])
 124             newcontent = urlh.read()
 125             urlh.close()
 126         except (IOError, OSError):
 127             if verbose:
 128                 to_screen(compat_str(traceback.format_exc()))
 129             to_screen('ERROR: unable to download latest version')
 130             return
 131
 132         newcontent_hash = hashlib.sha256(newcontent).hexdigest()
 133         if newcontent_hash != version['exe'][1]:
 134             to_screen('ERROR: the downloaded file hash does not match. Aborting.')
 135             return
 136
 137         try:
 138             with open(exe + '.new', 'wb') as outf:
 139                 outf.write(newcontent)
 140         except (IOError, OSError):
 141             if verbose:
 142                 to_screen(compat_str(traceback.format_exc()))
 143             to_screen('ERROR: unable to write the new version')
 144             return
 145
 146         try:
 147             bat = os.path.join(directory, 'youtube-dl-updater.bat')
 148             with io.open(bat, 'w') as batfile:
 149                 batfile.write('''
 150 @echo off
 151 echo Waiting for file handle to be closed ...
 152 ping 127.0.0.1 -n 5 -w 1000 > NUL
 153 move /Y "%s.new" "%s" > NUL
 154 echo Updated youtube-dl to version %s.
 155 start /b "" cmd /c del "%%~f0"&exit /b"
 156                 \n''' % (exe, exe, version_id))
 157
 158             subprocess.Popen([bat])  # Continues to run in the background
 159             return  # Do not show premature success messages
 160         except (IOError, OSError):
 161             if verbose:
 162                 to_screen(compat_str(traceback.format_exc()))
 163             to_screen('ERROR: unable to overwrite current version')
 164             return
 165
 166     # Zip unix package
 167     elif isinstance(globals().get('__loader__'), zipimporter):
 168         try:
 169             urlh = compat_urllib_request.urlopen(version['bin'][0])
 170             newcontent = urlh.read()
 171             urlh.close()
 172         except (IOError, OSError):
 173             if verbose:
 174                 to_screen(compat_str(traceback.format_exc()))
 175             to_screen('ERROR: unable to download latest version')
 176             return
 177
 178         newcontent_hash = hashlib.sha256(newcontent).hexdigest()
 179         if newcontent_hash != version['bin'][1]:
 180             to_screen('ERROR: the downloaded file hash does not match. Aborting.')
 181             return
 182
 183         try:
 184             with open(filename, 'wb') as outf:
 185                 outf.write(newcontent)
 186         except (IOError, OSError):
 187             if verbose:
 188                 to_screen(compat_str(traceback.format_exc()))
 189             to_screen('ERROR: unable to overwrite current version')
 190             return
 191
 192     to_screen('Updated youtube-dl. Restart youtube-dl to use the new version.')
 193
 194
 195 def get_notes(versions, fromVersion):
 196     notes = []
 197     for v, vdata in sorted(versions.items()):
 198         if v > fromVersion:
 199             notes.extend(vdata.get('notes', []))
 200     return notes
 201
 202
 203 def print_notes(to_screen, versions, fromVersion=__version__):
 204     notes = get_notes(versions, fromVersion)
 205     if notes:
 206         to_screen('PLEASE NOTE:')
 207         for note in notes:
 208             to_screen(note)