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from __future__ import unicode_literals
import io
import json
import traceback
import hashlib
import os
import subprocess
import sys
from zipimport import zipimporter
from .utils import encode_compat_str
from .version import __version__
def rsa_verify(message, signature, key):
from hashlib import sha256
assert isinstance(message, bytes)
byte_size = (len(bin(key[0])) - 2 + 8 - 1) // 8
signature = ('%x' % pow(int(signature, 16), key[1], key[0])).encode()
signature = (byte_size * 2 - len(signature)) * b'0' + signature
asn1 = b'3031300d060960864801650304020105000420'
asn1 += sha256(message).hexdigest().encode()
if byte_size < len(asn1) // 2 + 11:
return False
expected = b'0001' + (byte_size - len(asn1) // 2 - 3) * b'ff' + b'00' + asn1
return expected == signature
def update_self(to_screen, verbose, opener):
"""Update the program file with the latest version from the repository"""
UPDATE_URL = 'https://rg3.github.io/youtube-dl/update/'
VERSION_URL = UPDATE_URL + 'LATEST_VERSION'
JSON_URL = UPDATE_URL + 'versions.json'
UPDATES_RSA_KEY = (0x9d60ee4d8f805312fdb15a62f87b95bd66177b91df176765d13514a0f1754bcd2057295c5b6f1d35daa6742c3ffc9a82d3e118861c207995a8031e151d863c9927e304576bc80692bc8e094896fcf11b66f3e29e04e3a71e9a11558558acea1840aec37fc396fb6b65dc81a1c4144e03bd1c011de62e3f1357b327d08426fe93, 65537)
if not isinstance(globals().get('__loader__'), zipimporter) and not hasattr(sys, 'frozen'):
to_screen('It looks like you installed youtube-dl with a package manager, pip, setup.py or a tarball. Please use that to update.')
return
# Check if there is a new version
try:
newversion = opener.open(VERSION_URL).read().decode('utf-8').strip()
except Exception:
if verbose:
to_screen(encode_compat_str(traceback.format_exc()))
to_screen('ERROR: can\'t find the current version. Please try again later.')
return
if newversion == __version__:
to_screen('youtube-dl is up-to-date (' + __version__ + ')')
return
# Download and check versions info
try:
versions_info = opener.open(JSON_URL).read().decode('utf-8')
versions_info = json.loads(versions_info)
except Exception:
if verbose:
to_screen(encode_compat_str(traceback.format_exc()))
to_screen('ERROR: can\'t obtain versions info. Please try again later.')
return
if 'signature' not in versions_info:
to_screen('ERROR: the versions file is not signed or corrupted. Aborting.')
return
signature = versions_info['signature']
del versions_info['signature']
if not rsa_verify(json.dumps(versions_info, sort_keys=True).encode('utf-8'), signature, UPDATES_RSA_KEY):
to_screen('ERROR: the versions file signature is invalid. Aborting.')
return
version_id = versions_info['latest']
def version_tuple(version_str):
return tuple(map(int, version_str.split('.')))
if version_tuple(__version__) >= version_tuple(version_id):
to_screen('youtube-dl is up to date (%s)' % __version__)
return
to_screen('Updating to version ' + version_id + ' ...')
version = versions_info['versions'][version_id]
print_notes(to_screen, versions_info['versions'])
# sys.executable is set to the full pathname of the exe-file for py2exe
filename = sys.executable if hasattr(sys, 'frozen') else sys.argv[0]
if not os.access(filename, os.W_OK):
to_screen('ERROR: no write permissions on %s' % filename)
return
# Py2EXE
if hasattr(sys, 'frozen'):
exe = filename
directory = os.path.dirname(exe)
if not os.access(directory, os.W_OK):
to_screen('ERROR: no write permissions on %s' % directory)
return
try:
urlh = opener.open(version['exe'][0])
newcontent = urlh.read()
urlh.close()
except (IOError, OSError):
if verbose:
to_screen(encode_compat_str(traceback.format_exc()))
to_screen('ERROR: unable to download latest version')
return
newcontent_hash = hashlib.sha256(newcontent).hexdigest()
if newcontent_hash != version['exe'][1]:
to_screen('ERROR: the downloaded file hash does not match. Aborting.')
return
try:
with open(exe + '.new', 'wb') as outf:
outf.write(newcontent)
except (IOError, OSError):
if verbose:
to_screen(encode_compat_str(traceback.format_exc()))
to_screen('ERROR: unable to write the new version')
return
try:
bat = os.path.join(directory, 'youtube-dl-updater.bat')
with io.open(bat, 'w') as batfile:
batfile.write('''
@echo off
echo Waiting for file handle to be closed ...
ping 127.0.0.1 -n 5 -w 1000 > NUL
move /Y "%s.new" "%s" > NUL
echo Updated youtube-dl to version %s.
start /b "" cmd /c del "%%~f0"&exit /b"
\n''' % (exe, exe, version_id))
subprocess.Popen([bat]) # Continues to run in the background
return # Do not show premature success messages
except (IOError, OSError):
if verbose:
to_screen(encode_compat_str(traceback.format_exc()))
to_screen('ERROR: unable to overwrite current version')
return
# Zip unix package
elif isinstance(globals().get('__loader__'), zipimporter):
try:
urlh = opener.open(version['bin'][0])
newcontent = urlh.read()
urlh.close()
except (IOError, OSError):
if verbose:
to_screen(encode_compat_str(traceback.format_exc()))
to_screen('ERROR: unable to download latest version')
return
newcontent_hash = hashlib.sha256(newcontent).hexdigest()
if newcontent_hash != version['bin'][1]:
to_screen('ERROR: the downloaded file hash does not match. Aborting.')
return
try:
with open(filename, 'wb') as outf:
outf.write(newcontent)
except (IOError, OSError):
if verbose:
to_screen(encode_compat_str(traceback.format_exc()))
to_screen('ERROR: unable to overwrite current version')
return
to_screen('Updated youtube-dl. Restart youtube-dl to use the new version.')
def get_notes(versions, fromVersion):
notes = []
for v, vdata in sorted(versions.items()):
if v > fromVersion:
notes.extend(vdata.get('notes', []))
return notes
def print_notes(to_screen, versions, fromVersion=__version__):
notes = get_notes(versions, fromVersion)
if notes:
to_screen('PLEASE NOTE:')
for note in notes:
to_screen(note)
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