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

   1 import io
   2 import json
   3 import traceback
   4 import hashlib
   5 import subprocess
   6 import sys
   7 from zipimport import zipimporter
   8
   9 from .utils import *
  10 from .version import __version__
  11
  12 def rsa_verify(message, signature, key):
  13     from struct import pack
  14     from hashlib import sha256
  15     from sys import version_info
  16     def b(x):
  17         if version_info[0] == 2: return x
  18         else: return x.encode('latin1')
  19     assert(type(message) == type(b('')))
  20     block_size = 0
  21     n = key[0]
  22     while n:
  23         block_size += 1
  24         n >>= 8
  25     signature = pow(int(signature, 16), key[1], key[0])
  26     raw_bytes = []
  27     while signature:
  28         raw_bytes.insert(0, pack("B", signature & 0xFF))
  29         signature >>= 8
  30     signature = (block_size - len(raw_bytes)) * b('\x00') + b('').join(raw_bytes)
  31     if signature[0:2] != b('\x00\x01'): return False
  32     signature = signature[2:]
  33     if not b('\x00') in signature: return False
  34     signature = signature[signature.index(b('\x00'))+1:]
  35     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
  36     signature = signature[19:]
  37     if signature != sha256(message).digest(): return False
  38     return True
  39
  40 def update_self(to_screen, verbose):
  41     """Update the program file with the latest version from the repository"""
  42
  43     UPDATE_URL = "http://rg3.github.io/youtube-dl/update/"
  44     VERSION_URL = UPDATE_URL + 'LATEST_VERSION'
  45     JSON_URL = UPDATE_URL + 'versions.json'
  46     UPDATES_RSA_KEY = (0x9d60ee4d8f805312fdb15a62f87b95bd66177b91df176765d13514a0f1754bcd2057295c5b6f1d35daa6742c3ffc9a82d3e118861c207995a8031e151d863c9927e304576bc80692bc8e094896fcf11b66f3e29e04e3a71e9a11558558acea1840aec37fc396fb6b65dc81a1c4144e03bd1c011de62e3f1357b327d08426fe93, 65537)
  47
  48     if not isinstance(globals().get('__loader__'), zipimporter) and not hasattr(sys, "frozen"):
  49         to_screen(u'It looks like you installed youtube-dl with a package manager, pip, setup.py or a tarball. Please use that to update.')
  50         return
  51
  52     # Check if there is a new version
  53     try:
  54         newversion = compat_urllib_request.urlopen(VERSION_URL).read().decode('utf-8').strip()
  55     except:
  56         if verbose: to_screen(compat_str(traceback.format_exc()))
  57         to_screen(u'ERROR: can\'t find the current version. Please try again later.')
  58         return
  59     if newversion == __version__:
  60         to_screen(u'youtube-dl is up-to-date (' + __version__ + ')')
  61         return
  62
  63     # Download and check versions info
  64     try:
  65         versions_info = compat_urllib_request.urlopen(JSON_URL).read().decode('utf-8')
  66         versions_info = json.loads(versions_info)
  67     except:
  68         if verbose: to_screen(compat_str(traceback.format_exc()))
  69         to_screen(u'ERROR: can\'t obtain versions info. Please try again later.')
  70         return
  71     if not 'signature' in versions_info:
  72         to_screen(u'ERROR: the versions file is not signed or corrupted. Aborting.')
  73         return
  74     signature = versions_info['signature']
  75     del versions_info['signature']
  76     if not rsa_verify(json.dumps(versions_info, sort_keys=True).encode('utf-8'), signature, UPDATES_RSA_KEY):
  77         to_screen(u'ERROR: the versions file signature is invalid. Aborting.')
  78         return
  79
  80     version_id = versions_info['latest']
  81     to_screen(u'Updating to version ' + version_id + '...')
  82     version = versions_info['versions'][version_id]
  83
  84     print_notes(to_screen, versions_info['versions'])
  85
  86     filename = sys.argv[0]
  87     # Py2EXE: Filename could be different
  88     if hasattr(sys, "frozen") and not os.path.isfile(filename):
  89         if os.path.isfile(filename + u'.exe'):
  90             filename += u'.exe'
  91
  92     if not os.access(filename, os.W_OK):
  93         to_screen(u'ERROR: no write permissions on %s' % filename)
  94         return
  95
  96     # Py2EXE
  97     if hasattr(sys, "frozen"):
  98         exe = os.path.abspath(filename)
  99         directory = os.path.dirname(exe)
 100         if not os.access(directory, os.W_OK):
 101             to_screen(u'ERROR: no write permissions on %s' % directory)
 102             return
 103
 104         try:
 105             urlh = compat_urllib_request.urlopen(version['exe'][0])
 106             newcontent = urlh.read()
 107             urlh.close()
 108         except (IOError, OSError) as err:
 109             if verbose: to_screen(compat_str(traceback.format_exc()))
 110             to_screen(u'ERROR: unable to download latest version')
 111             return
 112
 113         newcontent_hash = hashlib.sha256(newcontent).hexdigest()
 114         if newcontent_hash != version['exe'][1]:
 115             to_screen(u'ERROR: the downloaded file hash does not match. Aborting.')
 116             return
 117
 118         try:
 119             with open(exe + '.new', 'wb') as outf:
 120                 outf.write(newcontent)
 121         except (IOError, OSError) as err:
 122             if verbose: to_screen(compat_str(traceback.format_exc()))
 123             to_screen(u'ERROR: unable to write the new version')
 124             return
 125
 126         try:
 127             bat = os.path.join(directory, 'youtube-dl-updater.bat')
 128             with io.open(bat, 'w') as batfile:
 129                 batfile.write(u"""
 130 @echo off
 131 echo Waiting for file handle to be closed ...
 132 ping 127.0.0.1 -n 5 -w 1000 > NUL
 133 move /Y "%s.new" "%s" > NUL
 134 echo Updated youtube-dl to version %s.
 135 start /b "" cmd /c del "%%~f0"&exit /b"
 136                 \n""" % (exe, exe, version_id))
 137
 138             subprocess.Popen([bat])  # Continues to run in the background
 139             return  # Do not show premature success messages
 140         except (IOError, OSError) as err:
 141             if verbose: to_screen(compat_str(traceback.format_exc()))
 142             to_screen(u'ERROR: unable to overwrite current version')
 143             return
 144
 145     # Zip unix package
 146     elif isinstance(globals().get('__loader__'), zipimporter):
 147         try:
 148             urlh = compat_urllib_request.urlopen(version['bin'][0])
 149             newcontent = urlh.read()
 150             urlh.close()
 151         except (IOError, OSError) as err:
 152             if verbose: to_screen(compat_str(traceback.format_exc()))
 153             to_screen(u'ERROR: unable to download latest version')
 154             return
 155
 156         newcontent_hash = hashlib.sha256(newcontent).hexdigest()
 157         if newcontent_hash != version['bin'][1]:
 158             to_screen(u'ERROR: the downloaded file hash does not match. Aborting.')
 159             return
 160
 161         try:
 162             with open(filename, 'wb') as outf:
 163                 outf.write(newcontent)
 164         except (IOError, OSError) as err:
 165             if verbose: to_screen(compat_str(traceback.format_exc()))
 166             to_screen(u'ERROR: unable to overwrite current version')
 167             return
 168
 169     to_screen(u'Updated youtube-dl. Restart youtube-dl to use the new version.')
 170
 171 def get_notes(versions, fromVersion):
 172     notes = []
 173     for v,vdata in sorted(versions.items()):
 174         if v > fromVersion:
 175             notes.extend(vdata.get('notes', []))
 176     return notes
 177
 178 def print_notes(to_screen, versions, fromVersion=__version__):
 179     notes = get_notes(versions, fromVersion)
 180     if notes:
 181         to_screen(u'PLEASE NOTE:')
 182         for note in notes:
 183             to_screen(note)