mirror of
https://github.com/yt-dlp/yt-dlp
synced 2024-12-29 22:24:25 +01:00
439 lines
16 KiB
Python
439 lines
16 KiB
Python
import atexit
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import contextlib
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import hashlib
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import json
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import os
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import platform
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import re
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import subprocess
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import sys
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import urllib.error
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from zipimport import zipimporter
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from .compat import functools # isort: split
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from .compat import compat_realpath, compat_shlex_quote
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from .utils import (
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Popen,
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cached_method,
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deprecation_warning,
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network_exceptions,
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remove_end,
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remove_start,
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sanitized_Request,
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shell_quote,
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system_identifier,
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version_tuple,
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)
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from .version import CHANNEL, UPDATE_HINT, VARIANT, __version__
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UPDATE_SOURCES = {
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'stable': 'yt-dlp/yt-dlp',
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'nightly': 'yt-dlp/yt-dlp-nightly-builds',
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}
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REPOSITORY = UPDATE_SOURCES['stable']
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_VERSION_RE = re.compile(r'(\d+\.)*\d+')
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API_BASE_URL = 'https://api.github.com/repos'
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# Backwards compatibility variables for the current channel
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API_URL = f'{API_BASE_URL}/{REPOSITORY}/releases'
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@functools.cache
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def _get_variant_and_executable_path():
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"""@returns (variant, executable_path)"""
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if getattr(sys, 'frozen', False):
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path = sys.executable
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if not hasattr(sys, '_MEIPASS'):
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return 'py2exe', path
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elif sys._MEIPASS == os.path.dirname(path):
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return f'{sys.platform}_dir', path
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elif sys.platform == 'darwin':
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machine = '_legacy' if version_tuple(platform.mac_ver()[0]) < (10, 15) else ''
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else:
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machine = f'_{platform.machine().lower()}'
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# Ref: https://en.wikipedia.org/wiki/Uname#Examples
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if machine[1:] in ('x86', 'x86_64', 'amd64', 'i386', 'i686'):
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machine = '_x86' if platform.architecture()[0][:2] == '32' else ''
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return f'{remove_end(sys.platform, "32")}{machine}_exe', path
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path = os.path.dirname(__file__)
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if isinstance(__loader__, zipimporter):
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return 'zip', os.path.join(path, '..')
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elif (os.path.basename(sys.argv[0]) in ('__main__.py', '-m')
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and os.path.exists(os.path.join(path, '../.git/HEAD'))):
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return 'source', path
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return 'unknown', path
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def detect_variant():
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return VARIANT or _get_variant_and_executable_path()[0]
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@functools.cache
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def current_git_head():
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if detect_variant() != 'source':
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return
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with contextlib.suppress(Exception):
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stdout, _, _ = Popen.run(
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['git', 'rev-parse', '--short', 'HEAD'],
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text=True, cwd=os.path.dirname(os.path.abspath(__file__)),
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stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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if re.fullmatch('[0-9a-f]+', stdout.strip()):
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return stdout.strip()
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_FILE_SUFFIXES = {
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'zip': '',
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'py2exe': '_min.exe',
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'win_exe': '.exe',
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'win_x86_exe': '_x86.exe',
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'darwin_exe': '_macos',
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'darwin_legacy_exe': '_macos_legacy',
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'linux_exe': '_linux',
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'linux_aarch64_exe': '_linux_aarch64',
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'linux_armv7l_exe': '_linux_armv7l',
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}
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_NON_UPDATEABLE_REASONS = {
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**{variant: None for variant in _FILE_SUFFIXES}, # Updatable
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**{variant: f'Auto-update is not supported for unpackaged {name} executable; Re-download the latest release'
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for variant, name in {'win32_dir': 'Windows', 'darwin_dir': 'MacOS', 'linux_dir': 'Linux'}.items()},
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'source': 'You cannot update when running from source code; Use git to pull the latest changes',
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'unknown': 'You installed yt-dlp with a package manager or setup.py; Use that to update',
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'other': 'You are using an unofficial build of yt-dlp; Build the executable again',
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}
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def is_non_updateable():
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if UPDATE_HINT:
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return UPDATE_HINT
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return _NON_UPDATEABLE_REASONS.get(
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detect_variant(), _NON_UPDATEABLE_REASONS['unknown' if VARIANT else 'other'])
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def _sha256_file(path):
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h = hashlib.sha256()
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mv = memoryview(bytearray(128 * 1024))
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with open(os.path.realpath(path), 'rb', buffering=0) as f:
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for n in iter(lambda: f.readinto(mv), 0):
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h.update(mv[:n])
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return h.hexdigest()
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class Updater:
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_exact = True
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def __init__(self, ydl, target=None):
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self.ydl = ydl
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self.target_channel, sep, self.target_tag = (target or CHANNEL).rpartition('@')
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# stable => stable@latest
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if not sep and ('/' in self.target_tag or self.target_tag in UPDATE_SOURCES):
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self.target_channel = self.target_tag
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self.target_tag = None
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elif not self.target_channel:
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self.target_channel = CHANNEL.partition('@')[0]
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if not self.target_tag:
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self.target_tag = 'latest'
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self._exact = False
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elif self.target_tag != 'latest':
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self.target_tag = f'tags/{self.target_tag}'
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if '/' in self.target_channel:
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self._target_repo = self.target_channel
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if self.target_channel not in (CHANNEL, *UPDATE_SOURCES.values()):
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self.ydl.report_warning(
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f'You are switching to an {self.ydl._format_err("unofficial", "red")} executable '
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f'from {self.ydl._format_err(self._target_repo, self.ydl.Styles.EMPHASIS)}. '
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f'Run {self.ydl._format_err("at your own risk", "light red")}')
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self.restart = self._blocked_restart
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else:
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self._target_repo = UPDATE_SOURCES.get(self.target_channel)
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if not self._target_repo:
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self._report_error(
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f'Invalid update channel {self.target_channel!r} requested. '
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f'Valid channels are {", ".join(UPDATE_SOURCES)}', True)
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def _version_compare(self, a, b, channel=CHANNEL):
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if self._exact and channel != self.target_channel:
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return False
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if _VERSION_RE.fullmatch(f'{a}.{b}'):
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a, b = version_tuple(a), version_tuple(b)
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return a == b if self._exact else a >= b
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return a == b
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@functools.cached_property
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def _tag(self):
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if self._version_compare(self.current_version, self.latest_version):
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return self.target_tag
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identifier = f'{detect_variant()} {self.target_channel} {system_identifier()}'
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for line in self._download('_update_spec', 'latest').decode().splitlines():
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if not line.startswith('lock '):
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continue
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_, tag, pattern = line.split(' ', 2)
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if re.match(pattern, identifier):
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if not self._exact:
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return f'tags/{tag}'
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elif self.target_tag == 'latest' or not self._version_compare(
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tag, self.target_tag[5:], channel=self.target_channel):
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self._report_error(
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f'yt-dlp cannot be updated above {tag} since you are on an older Python version', True)
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return f'tags/{self.current_version}'
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return self.target_tag
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@cached_method
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def _get_version_info(self, tag):
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url = f'{API_BASE_URL}/{self._target_repo}/releases/{tag}'
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self.ydl.write_debug(f'Fetching release info: {url}')
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return json.loads(self.ydl.urlopen(sanitized_Request(url, headers={
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'Accept': 'application/vnd.github+json',
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'User-Agent': 'yt-dlp',
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'X-GitHub-Api-Version': '2022-11-28',
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})).read().decode())
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@property
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def current_version(self):
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"""Current version"""
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return __version__
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@staticmethod
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def _label(channel, tag):
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"""Label for a given channel and tag"""
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return f'{channel}@{remove_start(tag, "tags/")}'
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def _get_actual_tag(self, tag):
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if tag.startswith('tags/'):
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return tag[5:]
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return self._get_version_info(tag)['tag_name']
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@property
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def new_version(self):
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"""Version of the latest release we can update to"""
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return self._get_actual_tag(self._tag)
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@property
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def latest_version(self):
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"""Version of the target release"""
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return self._get_actual_tag(self.target_tag)
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@property
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def has_update(self):
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"""Whether there is an update available"""
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return not self._version_compare(self.current_version, self.new_version)
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@functools.cached_property
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def filename(self):
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"""Filename of the executable"""
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return compat_realpath(_get_variant_and_executable_path()[1])
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def _download(self, name, tag):
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slug = 'latest/download' if tag == 'latest' else f'download/{tag[5:]}'
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url = f'https://github.com/{self._target_repo}/releases/{slug}/{name}'
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self.ydl.write_debug(f'Downloading {name} from {url}')
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return self.ydl.urlopen(url).read()
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@functools.cached_property
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def release_name(self):
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"""The release filename"""
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return f'yt-dlp{_FILE_SUFFIXES[detect_variant()]}'
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@functools.cached_property
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def release_hash(self):
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"""Hash of the latest release"""
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hash_data = dict(ln.split()[::-1] for ln in self._download('SHA2-256SUMS', self._tag).decode().splitlines())
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return hash_data[self.release_name]
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def _report_error(self, msg, expected=False):
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self.ydl.report_error(msg, tb=False if expected else None)
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self.ydl._download_retcode = 100
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def _report_permission_error(self, file):
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self._report_error(f'Unable to write to {file}; Try running as administrator', True)
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def _report_network_error(self, action, delim=';'):
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self._report_error(
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f'Unable to {action}{delim} visit '
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f'https://github.com/{self._target_repo}/releases/{self.target_tag.replace("tags/", "tag/")}', True)
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def check_update(self):
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"""Report whether there is an update available"""
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if not self._target_repo:
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return False
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try:
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self.ydl.to_screen((
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f'Available version: {self._label(self.target_channel, self.latest_version)}, ' if self.target_tag == 'latest' else ''
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) + f'Current version: {self._label(CHANNEL, self.current_version)}')
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except network_exceptions as e:
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return self._report_network_error(f'obtain version info ({e})', delim='; Please try again later or')
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if not is_non_updateable():
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self.ydl.to_screen(f'Current Build Hash: {_sha256_file(self.filename)}')
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if self.has_update:
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return True
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if self.target_tag == self._tag:
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self.ydl.to_screen(f'yt-dlp is up to date ({self._label(CHANNEL, self.current_version)})')
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elif not self._exact:
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self.ydl.report_warning('yt-dlp cannot be updated any further since you are on an older Python version')
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return False
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def update(self):
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"""Update yt-dlp executable to the latest version"""
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if not self.check_update():
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return
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err = is_non_updateable()
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if err:
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return self._report_error(err, True)
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self.ydl.to_screen(f'Updating to {self._label(self.target_channel, self.new_version)} ...')
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if (_VERSION_RE.fullmatch(self.target_tag[5:])
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and version_tuple(self.target_tag[5:]) < (2023, 3, 2)):
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self.ydl.report_warning('You are downgrading to a version without --update-to')
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directory = os.path.dirname(self.filename)
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if not os.access(self.filename, os.W_OK):
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return self._report_permission_error(self.filename)
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elif not os.access(directory, os.W_OK):
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return self._report_permission_error(directory)
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new_filename, old_filename = f'{self.filename}.new', f'{self.filename}.old'
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if detect_variant() == 'zip': # Can be replaced in-place
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new_filename, old_filename = self.filename, None
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try:
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if os.path.exists(old_filename or ''):
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os.remove(old_filename)
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except OSError:
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return self._report_error('Unable to remove the old version')
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try:
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newcontent = self._download(self.release_name, self._tag)
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except network_exceptions as e:
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if isinstance(e, urllib.error.HTTPError) and e.code == 404:
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return self._report_error(
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f'The requested tag {self._label(self.target_channel, self.target_tag)} does not exist', True)
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return self._report_network_error(f'fetch updates: {e}')
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try:
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expected_hash = self.release_hash
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except Exception:
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self.ydl.report_warning('no hash information found for the release')
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else:
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if hashlib.sha256(newcontent).hexdigest() != expected_hash:
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return self._report_network_error('verify the new executable')
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try:
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with open(new_filename, 'wb') as outf:
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outf.write(newcontent)
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except OSError:
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return self._report_permission_error(new_filename)
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if old_filename:
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mask = os.stat(self.filename).st_mode
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try:
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os.rename(self.filename, old_filename)
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except OSError:
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return self._report_error('Unable to move current version')
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try:
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os.rename(new_filename, self.filename)
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except OSError:
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self._report_error('Unable to overwrite current version')
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return os.rename(old_filename, self.filename)
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variant = detect_variant()
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if variant.startswith('win') or variant == 'py2exe':
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atexit.register(Popen, f'ping 127.0.0.1 -n 5 -w 1000 & del /F "{old_filename}"',
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shell=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
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elif old_filename:
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try:
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os.remove(old_filename)
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except OSError:
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self._report_error('Unable to remove the old version')
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try:
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os.chmod(self.filename, mask)
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except OSError:
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return self._report_error(
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f'Unable to set permissions. Run: sudo chmod a+rx {compat_shlex_quote(self.filename)}')
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self.ydl.to_screen(f'Updated yt-dlp to {self._label(self.target_channel, self.new_version)}')
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return True
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@functools.cached_property
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def cmd(self):
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"""The command-line to run the executable, if known"""
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# There is no sys.orig_argv in py < 3.10. Also, it can be [] when frozen
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if getattr(sys, 'orig_argv', None):
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return sys.orig_argv
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elif getattr(sys, 'frozen', False):
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return sys.argv
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def restart(self):
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"""Restart the executable"""
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assert self.cmd, 'Must be frozen or Py >= 3.10'
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self.ydl.write_debug(f'Restarting: {shell_quote(self.cmd)}')
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_, _, returncode = Popen.run(self.cmd)
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return returncode
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def _blocked_restart(self):
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self._report_error(
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'Automatically restarting into custom builds is disabled for security reasons. '
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'Restart yt-dlp to use the updated version', expected=True)
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return self.ydl._download_retcode
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def run_update(ydl):
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"""Update the program file with the latest version from the repository
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@returns Whether there was a successful update (No update = False)
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"""
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return Updater(ydl).update()
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# Deprecated
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def update_self(to_screen, verbose, opener):
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import traceback
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deprecation_warning(f'"{__name__}.update_self" is deprecated and may be removed '
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f'in a future version. Use "{__name__}.run_update(ydl)" instead')
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printfn = to_screen
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class FakeYDL():
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to_screen = printfn
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def report_warning(self, msg, *args, **kwargs):
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return printfn(f'WARNING: {msg}', *args, **kwargs)
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def report_error(self, msg, tb=None):
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printfn(f'ERROR: {msg}')
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if not verbose:
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return
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if tb is None:
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# Copied from YoutubeDL.trouble
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if sys.exc_info()[0]:
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tb = ''
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if hasattr(sys.exc_info()[1], 'exc_info') and sys.exc_info()[1].exc_info[0]:
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tb += ''.join(traceback.format_exception(*sys.exc_info()[1].exc_info))
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tb += traceback.format_exc()
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else:
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tb_data = traceback.format_list(traceback.extract_stack())
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tb = ''.join(tb_data)
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if tb:
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printfn(tb)
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def write_debug(self, msg, *args, **kwargs):
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printfn(f'[debug] {msg}', *args, **kwargs)
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def urlopen(self, url):
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return opener.open(url)
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return run_update(FakeYDL())
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__all__ = ['Updater']
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