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, Popen
  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'):
  36         if getattr(sys, '_MEIPASS', None):
  37             if sys._MEIPASS == os.path.dirname(sys.executable):
  38                 return 'dir'
  39             return 'exe'
  40         return 'py2exe'
  41     elif isinstance(globals().get('__loader__'), zipimporter):
  42         return 'zip'
  43     elif os.path.basename(sys.argv[0]) == '__main__.py':
  44         return 'source'
  45     return 'unknown'
  46
  47
  48 _NON_UPDATEABLE_REASONS = {
  49     'exe': None,
  50     'zip': None,
  51     'dir': 'Auto-update is not supported for unpackaged windows executable; Re-download the latest release',
  52     'py2exe': 'There is no official release for py2exe executable; Build it again with the latest source code',
  53     'source': 'You cannot update when running from source code; Use git to pull the latest changes',
  54     'unknown': 'It looks like you installed yt-dlp with a package manager, pip, setup.py or a tarball; Use that to update',
  55 }
  56
  57
  58 def is_non_updateable():
  59     return _NON_UPDATEABLE_REASONS.get(detect_variant(), _NON_UPDATEABLE_REASONS['unknown'])
  60
  61
  62 def run_update(ydl):
  63     """
  64     Update the program file with the latest version from the repository
  65     Returns whether the program should terminate
  66     """
  67
  68     JSON_URL = 'https://api.github.com/repos/yt-dlp/yt-dlp/releases/latest'
  69
  70     def report_error(msg, expected=False):
  71         ydl.report_error(msg, tb='' if expected else None)
  72
  73     def report_unable(action, expected=False):
  74         report_error(f'Unable to {action}', expected)
  75
  76     def report_permission_error(file):
  77         report_unable(f'write to {file}; Try running as administrator', True)
  78
  79     def report_network_error(action, delim=';'):
  80         report_unable(f'{action}{delim} Visit  https://github.com/yt-dlp/yt-dlp/releases/latest', True)
  81
  82     def calc_sha256sum(path):
  83         h = hashlib.sha256()
  84         b = bytearray(128 * 1024)
  85         mv = memoryview(b)
  86         with open(os.path.realpath(path), 'rb', buffering=0) as f:
  87             for n in iter(lambda: f.readinto(mv), 0):
  88                 h.update(mv[:n])
  89         return h.hexdigest()
  90
  91     # Download and check versions info
  92     try:
  93         version_info = ydl._opener.open(JSON_URL).read().decode('utf-8')
  94         version_info = json.loads(version_info)
  95     except Exception:
  96         return report_network_error('obtain version info', delim='; Please try again later or')
  97
  98     def version_tuple(version_str):
  99         return tuple(map(int, version_str.split('.')))
 100
 101     version_id = version_info['tag_name']
 102     if version_tuple(__version__) >= version_tuple(version_id):
 103         ydl.to_screen(f'yt-dlp is up to date ({__version__})')
 104         return
 105
 106     err = is_non_updateable()
 107     if err:
 108         ydl.to_screen(f'Latest version: {version_id}, Current version: {__version__}')
 109         return report_error(err, True)
 110
 111     # sys.executable is set to the full pathname of the exe-file for py2exe
 112     # though symlinks are not followed so that we need to do this manually
 113     # with help of realpath
 114     filename = compat_realpath(sys.executable if hasattr(sys, 'frozen') else sys.argv[0])
 115     ydl.to_screen(f'Current version {__version__}; Build Hash {calc_sha256sum(filename)}')
 116     ydl.to_screen(f'Updating to version {version_id} ...')
 117
 118     version_labels = {
 119         'zip_3': '',
 120         'exe_64': '.exe',
 121         'exe_32': '_x86.exe',
 122     }
 123
 124     def get_bin_info(bin_or_exe, version):
 125         label = version_labels['%s_%s' % (bin_or_exe, version)]
 126         return next((i for i in version_info['assets'] if i['name'] == 'yt-dlp%s' % label), {})
 127
 128     def get_sha256sum(bin_or_exe, version):
 129         filename = 'yt-dlp%s' % version_labels['%s_%s' % (bin_or_exe, version)]
 130         urlh = next(
 131             (i for i in version_info['assets'] if i['name'] in ('SHA2-256SUMS')),
 132             {}).get('browser_download_url')
 133         if not urlh:
 134             return None
 135         hash_data = ydl._opener.open(urlh).read().decode('utf-8')
 136         return dict(ln.split()[::-1] for ln in hash_data.splitlines()).get(filename)
 137
 138     if not os.access(filename, os.W_OK):
 139         return report_permission_error(filename)
 140
 141     # PyInstaller
 142     if hasattr(sys, 'frozen'):
 143         exe = filename
 144         directory = os.path.dirname(exe)
 145         if not os.access(directory, os.W_OK):
 146             return report_permission_error(directory)
 147         try:
 148             if os.path.exists(filename + '.old'):
 149                 os.remove(filename + '.old')
 150         except (IOError, OSError):
 151             return report_unable('remove the old version')
 152
 153         try:
 154             arch = platform.architecture()[0][:2]
 155             url = get_bin_info('exe', arch).get('browser_download_url')
 156             if not url:
 157                 return report_network_error('fetch updates')
 158             urlh = ydl._opener.open(url)
 159             newcontent = urlh.read()
 160             urlh.close()
 161         except (IOError, OSError):
 162             return report_network_error('download latest version')
 163
 164         if not os.access(exe + '.new', os.W_OK):
 165             return report_permission_error(f'{exe}.new')
 166         try:
 167             with open(exe + '.new', 'wb') as outf:
 168                 outf.write(newcontent)
 169         except (IOError, OSError):
 170             return report_unable('write the new version')
 171
 172         expected_sum = get_sha256sum('exe', arch)
 173         if not expected_sum:
 174             ydl.report_warning('no hash information found for the release')
 175         elif calc_sha256sum(exe + '.new') != expected_sum:
 176             report_network_error('verify the new executable')
 177             try:
 178                 os.remove(exe + '.new')
 179             except OSError:
 180                 return report_unable('remove corrupt download')
 181
 182         try:
 183             os.rename(exe, exe + '.old')
 184         except (IOError, OSError):
 185             return report_unable('move current version')
 186         try:
 187             os.rename(exe + '.new', exe)
 188         except (IOError, OSError):
 189             report_unable('overwrite current version')
 190             os.rename(exe + '.old', exe)
 191             return
 192         try:
 193             # Continues to run in the background
 194             Popen(
 195                 'ping 127.0.0.1 -n 5 -w 1000 & del /F "%s.old"' % exe,
 196                 shell=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
 197             ydl.to_screen('Updated yt-dlp to version %s' % version_id)
 198             return True  # Exit app
 199         except OSError:
 200             report_unable('delete the old version')
 201
 202     # Zip unix package
 203     elif isinstance(globals().get('__loader__'), zipimporter):
 204         try:
 205             url = get_bin_info('zip', '3').get('browser_download_url')
 206             if not url:
 207                 return report_network_error('fetch updates')
 208             urlh = ydl._opener.open(url)
 209             newcontent = urlh.read()
 210             urlh.close()
 211         except (IOError, OSError):
 212             return report_network_error('download the latest version')
 213
 214         expected_sum = get_sha256sum('zip', '3')
 215         if not expected_sum:
 216             ydl.report_warning('no hash information found for the release')
 217         elif hashlib.sha256(newcontent).hexdigest() != expected_sum:
 218             return report_network_error('verify the new zip')
 219
 220         try:
 221             with open(filename, 'wb') as outf:
 222                 outf.write(newcontent)
 223         except (IOError, OSError):
 224             return report_unable('overwrite current version')
 225
 226     ydl.to_screen('Updated yt-dlp to version %s; Restart yt-dlp to use the new version' % version_id)
 227
 228
 229 '''  # UNUSED
 230 def get_notes(versions, fromVersion):
 231     notes = []
 232     for v, vdata in sorted(versions.items()):
 233         if v > fromVersion:
 234             notes.extend(vdata.get('notes', []))
 235     return notes
 236
 237
 238 def print_notes(to_screen, versions, fromVersion=__version__):
 239     notes = get_notes(versions, fromVersion)
 240     if notes:
 241         to_screen('PLEASE NOTE:')
 242         for note in notes:
 243             to_screen(note)
 244 '''
 245
 246
 247 def update_self(to_screen, verbose, opener):
 248     ''' Exists for backward compatibility '''
 249
 250     printfn = to_screen
 251
 252     printfn(
 253         'WARNING: "yt_dlp.update.update_self" is deprecated and may be removed in a future version. '
 254         'Use "yt_dlp.update.run_update(ydl)" instead')
 255
 256     class FakeYDL():
 257         _opener = opener
 258         to_screen = printfn
 259
 260         @staticmethod
 261         def report_warning(msg, *args, **kwargs):
 262             return printfn('WARNING: %s' % msg, *args, **kwargs)
 263
 264         @staticmethod
 265         def report_error(msg, tb=None):
 266             printfn('ERROR: %s' % msg)
 267             if not verbose:
 268                 return
 269             if tb is None:
 270                 # Copied from YoutubeDl.trouble
 271                 if sys.exc_info()[0]:
 272                     tb = ''
 273                     if hasattr(sys.exc_info()[1], 'exc_info') and sys.exc_info()[1].exc_info[0]:
 274                         tb += ''.join(traceback.format_exception(*sys.exc_info()[1].exc_info))
 275                     tb += encode_compat_str(traceback.format_exc())
 276                 else:
 277                     tb_data = traceback.format_list(traceback.extract_stack())
 278                     tb = ''.join(tb_data)
 279             if tb:
 280                 printfn(tb)
 281
 282     return run_update(FakeYDL())