diff options
Diffstat (limited to 'youtube_dl/update.py')
| -rw-r--r-- | youtube_dl/update.py | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/youtube_dl/update.py b/youtube_dl/update.py new file mode 100644 index 0000000..ebce966 --- /dev/null +++ b/youtube_dl/update.py @@ -0,0 +1,187 @@ +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) |