import collections import random import urllib.parse import urllib.request from ._utils import remove_start def random_user_agent(): _USER_AGENT_TPL = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/%s Safari/537.36' _CHROME_VERSIONS = ( '90.0.4430.212', '90.0.4430.24', '90.0.4430.70', '90.0.4430.72', '90.0.4430.85', '90.0.4430.93', '91.0.4472.101', '91.0.4472.106', '91.0.4472.114', '91.0.4472.124', '91.0.4472.164', '91.0.4472.19', '91.0.4472.77', '92.0.4515.107', '92.0.4515.115', '92.0.4515.131', '92.0.4515.159', '92.0.4515.43', '93.0.4556.0', '93.0.4577.15', '93.0.4577.63', '93.0.4577.82', '94.0.4606.41', '94.0.4606.54', '94.0.4606.61', '94.0.4606.71', '94.0.4606.81', '94.0.4606.85', '95.0.4638.17', '95.0.4638.50', '95.0.4638.54', '95.0.4638.69', '95.0.4638.74', '96.0.4664.18', '96.0.4664.45', '96.0.4664.55', '96.0.4664.93', '97.0.4692.20', ) return _USER_AGENT_TPL % random.choice(_CHROME_VERSIONS) class HTTPHeaderDict(collections.UserDict, dict): """ Store and access keys case-insensitively. The constructor can take multiple dicts, in which keys in the latter are prioritised. """ def __init__(self, *args, **kwargs): super().__init__() for dct in args: if dct is not None: self.update(dct) self.update(kwargs) def __setitem__(self, key, value): if isinstance(value, bytes): value = value.decode('latin-1') super().__setitem__(key.title(), str(value)) def __getitem__(self, key): return super().__getitem__(key.title()) def __delitem__(self, key): super().__delitem__(key.title()) def __contains__(self, key): return super().__contains__(key.title() if isinstance(key, str) else key) std_headers = HTTPHeaderDict({ 'User-Agent': random_user_agent(), 'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8', 'Accept-Language': 'en-us,en;q=0.5', 'Sec-Fetch-Mode': 'navigate', }) def clean_proxies(proxies: dict, headers: HTTPHeaderDict): req_proxy = headers.pop('Ytdl-Request-Proxy', None) if req_proxy: proxies.clear() # XXX: compat: Ytdl-Request-Proxy takes preference over everything, including NO_PROXY proxies['all'] = req_proxy for proxy_key, proxy_url in proxies.items(): if proxy_url == '__noproxy__': proxies[proxy_key] = None continue if proxy_key == 'no': # special case continue if proxy_url is not None: # Ensure proxies without a scheme are http. try: proxy_scheme = urllib.request._parse_proxy(proxy_url)[0] except ValueError: # Ignore invalid proxy URLs. Sometimes these may be introduced through environment # variables unrelated to proxy settings - e.g. Colab `COLAB_LANGUAGE_SERVER_PROXY`. # If the proxy is going to be used, the Request Handler proxy validation will handle it. continue if proxy_scheme is None: proxies[proxy_key] = 'http://' + remove_start(proxy_url, '//') replace_scheme = { 'socks5': 'socks5h', # compat: socks5 was treated as socks5h 'socks': 'socks4' # compat: non-standard } if proxy_scheme in replace_scheme: proxies[proxy_key] = urllib.parse.urlunparse( urllib.parse.urlparse(proxy_url)._replace(scheme=replace_scheme[proxy_scheme])) def clean_headers(headers: HTTPHeaderDict): if 'Youtubedl-No-Compression' in headers: # compat del headers['Youtubedl-No-Compression'] headers['Accept-Encoding'] = 'identity' def remove_dot_segments(path): # Implements RFC3986 5.2.4 remote_dot_segments # Pseudo-code: https://tools.ietf.org/html/rfc3986#section-5.2.4 # https://github.com/urllib3/urllib3/blob/ba49f5c4e19e6bca6827282feb77a3c9f937e64b/src/urllib3/util/url.py#L263 output = [] segments = path.split('/') for s in segments: if s == '.': continue elif s == '..': if output: output.pop() else: output.append(s) if not segments[0] and (not output or output[0]): output.insert(0, '') if segments[-1] in ('.', '..'): output.append('') return '/'.join(output) def escape_rfc3986(s): """Escape non-ASCII characters as suggested by RFC 3986""" return urllib.parse.quote(s, b"%/;:@&=+$,!~*'()?#[]") def normalize_url(url): """Normalize URL as suggested by RFC 3986""" url_parsed = urllib.parse.urlparse(url) return url_parsed._replace( netloc=url_parsed.netloc.encode('idna').decode('ascii'), path=escape_rfc3986(remove_dot_segments(url_parsed.path)), params=escape_rfc3986(url_parsed.params), query=escape_rfc3986(url_parsed.query), fragment=escape_rfc3986(url_parsed.fragment) ).geturl()