yt_dlp/update.py

   1 from __future__ import unicode_literals
   2
   3 import hashlib
   4 import json
   5 import os
   6 import platform
   7 import subprocess
   8 import sys
   9 import traceback
  10 from zipimport import zipimporter
  11
  12 from .compat import compat_realpath
  13 from .utils import encode_compat_str
  14
  15 from .version import __version__
  16
  17
  18 '''  # Not signed
  19 def rsa_verify(message, signature, key):
  20     from hashlib import sha256
  21     assert isinstance(message, bytes)
  22     byte_size = (len(bin(key[0])) - 2 + 8 - 1) // 8
  23     signature = ('%x' % pow(int(signature, 16), key[1], key[0])).encode()
  24     signature = (byte_size * 2 - len(signature)) * b'0' + signature
  25     asn1 = b'3031300d060960864801650304020105000420'
  26     asn1 += sha256(message).hexdigest().encode()
  27     if byte_size < len(asn1) // 2 + 11:
  28         return False
  29     expected = b'0001' + (byte_size - len(asn1) // 2 - 3) * b'ff' + b'00' + asn1
  30     return expected == signature
  31 '''
  32
  33
  34 def detect_variant():
  35     if hasattr(sys, 'frozen') and getattr(sys, '_MEIPASS', None):
  36         if sys._MEIPASS == os.path.dirname(sys.executable):
  37             return 'dir'
  38         return 'exe'
  39     elif isinstance(globals().get('__loader__'), zipimporter):
  40         return 'zip'
  41     elif os.path.basename(sys.argv[0]) == '__main__.py':
  42         return 'source'
  43     return 'unknown'
  44
  45
  46 def update_self(to_screen, verbose, opener):
  47     ''' Exists for backward compatibility. Use run_update(ydl) instead '''
  48
  49     printfn = to_screen
  50
  51     class FakeYDL():
  52         _opener = opener
  53         to_screen = printfn
  54
  55         @staticmethod
  56         def report_warning(msg, *args, **kwargs):
  57             return printfn('WARNING: %s' % msg, *args, **kwargs)
  58
  59         @staticmethod
  60         def report_error(msg, tb=None):
  61             printfn('ERROR: %s' % msg)
  62             if not verbose:
  63                 return
  64             if tb is None:
  65                 # Copied from YoutubeDl.trouble
  66                 if sys.exc_info()[0]:
  67                     tb = ''
  68                     if hasattr(sys.exc_info()[1], 'exc_info') and sys.exc_info()[1].exc_info[0]:
  69                         tb += ''.join(traceback.format_exception(*sys.exc_info()[1].exc_info))
  70                     tb += encode_compat_str(traceback.format_exc())
  71                 else:
  72                     tb_data = traceback.format_list(traceback.extract_stack())
  73                     tb = ''.join(tb_data)
  74             if tb:
  75                 printfn(tb)
  76
  77     return run_update(FakeYDL())
  78
  79
  80 def run_update(ydl):
  81     """
  82     Update the program file with the latest version from the repository
  83     Returns whether the program should terminate
  84     """
  85
  86     JSON_URL = 'https://api.github.com/repos/yt-dlp/yt-dlp/releases/latest'
  87
  88     def report_error(msg, network=False, expected=False, delim=';'):
  89         if network:
  90             msg += '%s Visit  https://github.com/yt-dlp/yt-dlp/releases/latest' % delim
  91         ydl.report_error(msg, tb='' if network or expected else None)
  92
  93     def calc_sha256sum(path):
  94         h = hashlib.sha256()
  95         b = bytearray(128 * 1024)
  96         mv = memoryview(b)
  97         with open(os.path.realpath(path), 'rb', buffering=0) as f:
  98             for n in iter(lambda: f.readinto(mv), 0):
  99                 h.update(mv[:n])
 100         return h.hexdigest()
 101
 102     ERRORS = {
 103         'exe': None,
 104         'zip': None,
 105         'dir': 'Auto-update is not supported for unpackaged windows executable. Re-download the latest release',
 106         'source': 'You cannot update when running from source code',
 107         'unknown': 'It looks like you installed yt-dlp with a package manager, pip, setup.py or a tarball. Use that to update',
 108     }
 109     err = ERRORS.get(detect_variant(), ERRORS['unknown'])
 110     if err:
 111         return report_error(err, expected=True)
 112
 113     # sys.executable is set to the full pathname of the exe-file for py2exe
 114     # though symlinks are not followed so that we need to do this manually
 115     # with help of realpath
 116     filename = compat_realpath(sys.executable if hasattr(sys, 'frozen') else sys.argv[0])
 117     ydl.to_screen('Current Build Hash %s' % calc_sha256sum(filename))
 118
 119     # Download and check versions info
 120     try:
 121         version_info = ydl._opener.open(JSON_URL).read().decode('utf-8')
 122         version_info = json.loads(version_info)
 123     except Exception:
 124         return report_error('can\'t obtain versions info. Please try again later ', True, delim='or')
 125
 126     def version_tuple(version_str):
 127         return tuple(map(int, version_str.split('.')))
 128
 129     version_id = version_info['tag_name']
 130     if version_tuple(__version__) >= version_tuple(version_id):
 131         ydl.to_screen('yt-dlp is up to date (%s)' % __version__)
 132         return
 133
 134     ydl.to_screen('Updating to version ' + version_id + ' ...')
 135
 136     version_labels = {
 137         'zip_3': '',
 138         'exe_64': '.exe',
 139         'exe_32': '_x86.exe',
 140     }
 141
 142     def get_bin_info(bin_or_exe, version):
 143         label = version_labels['%s_%s' % (bin_or_exe, version)]
 144         return next((i for i in version_info['assets'] if i['name'] == 'yt-dlp%s' % label), {})
 145
 146     def get_sha256sum(bin_or_exe, version):
 147         filename = 'yt-dlp%s' % version_labels['%s_%s' % (bin_or_exe, version)]
 148         urlh = next(
 149             (i for i in version_info['assets'] if i['name'] in ('SHA2-256SUMS')),
 150             {}).get('browser_download_url')
 151         if not urlh:
 152             return None
 153         hash_data = ydl._opener.open(urlh).read().decode('utf-8')
 154         return dict(ln.split()[::-1] for ln in hash_data.splitlines()).get(filename)
 155
 156     if not os.access(filename, os.W_OK):
 157         return report_error('no write permissions on %s' % filename, expected=True)
 158
 159     # PyInstaller
 160     if hasattr(sys, 'frozen'):
 161         exe = filename
 162         directory = os.path.dirname(exe)
 163         if not os.access(directory, os.W_OK):
 164             return report_error('no write permissions on %s' % directory, expected=True)
 165         try:
 166             if os.path.exists(filename + '.old'):
 167                 os.remove(filename + '.old')
 168         except (IOError, OSError):
 169             return report_error('unable to remove the old version')
 170
 171         try:
 172             arch = platform.architecture()[0][:2]
 173             url = get_bin_info('exe', arch).get('browser_download_url')
 174             if not url:
 175                 return report_error('unable to fetch updates', True)
 176             urlh = ydl._opener.open(url)
 177             newcontent = urlh.read()
 178             urlh.close()
 179         except (IOError, OSError, StopIteration):
 180             return report_error('unable to download latest version', True)
 181
 182         try:
 183             with open(exe + '.new', 'wb') as outf:
 184                 outf.write(newcontent)
 185         except (IOError, OSError):
 186             return report_error('unable to write the new version')
 187
 188         expected_sum = get_sha256sum('exe', arch)
 189         if not expected_sum:
 190             ydl.report_warning('no hash information found for the release')
 191         elif calc_sha256sum(exe + '.new') != expected_sum:
 192             report_error('unable to verify the new executable', True)
 193             try:
 194                 os.remove(exe + '.new')
 195             except OSError:
 196                 return report_error('unable to remove corrupt download')
 197
 198         try:
 199             os.rename(exe, exe + '.old')
 200         except (IOError, OSError):
 201             return report_error('unable to move current version')
 202         try:
 203             os.rename(exe + '.new', exe)
 204         except (IOError, OSError):
 205             report_error('unable to overwrite current version')
 206             os.rename(exe + '.old', exe)
 207             return
 208         try:
 209             # Continues to run in the background
 210             subprocess.Popen(
 211                 'ping 127.0.0.1 -n 5 -w 1000 & del /F "%s.old"' % exe,
 212                 shell=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
 213             ydl.to_screen('Updated yt-dlp to version %s' % version_id)
 214             return True  # Exit app
 215         except OSError:
 216             report_error('unable to delete old version')
 217
 218     # Zip unix package
 219     elif isinstance(globals().get('__loader__'), zipimporter):
 220         try:
 221             url = get_bin_info('zip', '3').get('browser_download_url')
 222             if not url:
 223                 return report_error('unable to fetch updates', True)
 224             urlh = ydl._opener.open(url)
 225             newcontent = urlh.read()
 226             urlh.close()
 227         except (IOError, OSError, StopIteration):
 228             return report_error('unable to download latest version', True)
 229
 230         expected_sum = get_sha256sum('zip', '3')
 231         if not expected_sum:
 232             ydl.report_warning('no hash information found for the release')
 233         elif hashlib.sha256(newcontent).hexdigest() != expected_sum:
 234             return report_error('unable to verify the new zip', True)
 235
 236         try:
 237             with open(filename, 'wb') as outf:
 238                 outf.write(newcontent)
 239         except (IOError, OSError):
 240             return report_error('unable to overwrite current version')
 241
 242     ydl.to_screen('Updated yt-dlp to version %s; Restart yt-dlp to use the new version' % version_id)
 243
 244
 245 '''  # UNUSED
 246 def get_notes(versions, fromVersion):
 247     notes = []
 248     for v, vdata in sorted(versions.items()):
 249         if v > fromVersion:
 250             notes.extend(vdata.get('notes', []))
 251     return notes
 252
 253
 254 def print_notes(to_screen, versions, fromVersion=__version__):
 255     notes = get_notes(versions, fromVersion)
 256     if notes:
 257         to_screen('PLEASE NOTE:')
 258         for note in notes:
 259             to_screen(note)
 260 '''