from __future__ import annotations import io import math import urllib.parse from ._helper import InstanceStoreMixin, select_proxy from .common import ( Features, Request, Response, register_preference, register_rh, ) from .exceptions import ( CertificateVerifyError, HTTPError, IncompleteRead, ProxyError, SSLError, TransportError, ) from .impersonate import ImpersonateRequestHandler, ImpersonateTarget from ..dependencies import curl_cffi, certifi from ..utils import int_or_none if curl_cffi is None: raise ImportError('curl_cffi is not installed') curl_cffi_version = tuple(int_or_none(x, default=0) for x in curl_cffi.__version__.split('.')) if curl_cffi_version != (0, 5, 10): curl_cffi._yt_dlp__version = f'{curl_cffi.__version__} (unsupported)' raise ImportError('Only curl_cffi 0.5.10 is supported') import curl_cffi.requests from curl_cffi.const import CurlECode, CurlOpt class CurlCFFIResponseReader(io.IOBase): def __init__(self, response: curl_cffi.requests.Response): self._response = response self._iterator = response.iter_content() self._buffer = b'' self.bytes_read = 0 def readable(self): return True def read(self, size=None): exception_raised = True try: while self._iterator and (size is None or len(self._buffer) < size): chunk = next(self._iterator, None) if chunk is None: self._iterator = None break self._buffer += chunk self.bytes_read += len(chunk) if size is None: size = len(self._buffer) data = self._buffer[:size] self._buffer = self._buffer[size:] # "free" the curl instance if the response is fully read. # curl_cffi doesn't do this automatically and only allows one open response per thread if not self._iterator and not self._buffer: self.close() exception_raised = False return data finally: if exception_raised: self.close() def close(self): if not self.closed: self._response.close() self._buffer = b'' super().close() class CurlCFFIResponseAdapter(Response): fp: CurlCFFIResponseReader def __init__(self, response: curl_cffi.requests.Response): super().__init__( fp=CurlCFFIResponseReader(response), headers=response.headers, url=response.url, status=response.status_code) def read(self, amt=None): try: return self.fp.read(amt) except curl_cffi.requests.errors.RequestsError as e: if e.code == CurlECode.PARTIAL_FILE: content_length = int_or_none(e.response.headers.get('Content-Length')) raise IncompleteRead( partial=self.fp.bytes_read, expected=content_length - self.fp.bytes_read if content_length is not None else None, cause=e) from e raise TransportError(cause=e) from e @register_rh class CurlCFFIRH(ImpersonateRequestHandler, InstanceStoreMixin): RH_NAME = 'curl_cffi' _SUPPORTED_URL_SCHEMES = ('http', 'https') _SUPPORTED_FEATURES = (Features.NO_PROXY, Features.ALL_PROXY) _SUPPORTED_PROXY_SCHEMES = ('http', 'https', 'socks4', 'socks4a', 'socks5', 'socks5h') _SUPPORTED_IMPERSONATE_TARGET_MAP = { ImpersonateTarget('chrome', '110', 'windows', '10'): curl_cffi.requests.BrowserType.chrome110, ImpersonateTarget('chrome', '107', 'windows', '10'): curl_cffi.requests.BrowserType.chrome107, ImpersonateTarget('chrome', '104', 'windows', '10'): curl_cffi.requests.BrowserType.chrome104, ImpersonateTarget('chrome', '101', 'windows', '10'): curl_cffi.requests.BrowserType.chrome101, ImpersonateTarget('chrome', '100', 'windows', '10'): curl_cffi.requests.BrowserType.chrome100, ImpersonateTarget('chrome', '99', 'windows', '10'): curl_cffi.requests.BrowserType.chrome99, ImpersonateTarget('edge', '101', 'windows', '10'): curl_cffi.requests.BrowserType.edge101, ImpersonateTarget('edge', '99', 'windows', '10'): curl_cffi.requests.BrowserType.edge99, ImpersonateTarget('safari', '15.5', 'macos', '12'): curl_cffi.requests.BrowserType.safari15_5, ImpersonateTarget('safari', '15.3', 'macos', '11'): curl_cffi.requests.BrowserType.safari15_3, ImpersonateTarget('chrome', '99', 'android', '12'): curl_cffi.requests.BrowserType.chrome99_android, } def _create_instance(self, cookiejar=None): return curl_cffi.requests.Session(cookies=cookiejar) def _check_extensions(self, extensions): super()._check_extensions(extensions) extensions.pop('impersonate', None) extensions.pop('cookiejar', None) extensions.pop('timeout', None) def _send(self, request: Request): max_redirects_exceeded = False session: curl_cffi.requests.Session = self._get_instance( cookiejar=self._get_cookiejar(request) if 'cookie' not in request.headers else None) if self.verbose: session.curl.setopt(CurlOpt.VERBOSE, 1) proxies = self._get_proxies(request) if 'no' in proxies: session.curl.setopt(CurlOpt.NOPROXY, proxies['no']) proxies.pop('no', None) # curl doesn't support per protocol proxies, so we select the one that matches the request protocol proxy = select_proxy(request.url, proxies=proxies) if proxy: session.curl.setopt(CurlOpt.PROXY, proxy) scheme = urllib.parse.urlparse(request.url).scheme.lower() if scheme != 'http': # Enable HTTP CONNECT for HTTPS urls. # Don't use CONNECT for http for compatibility with urllib behaviour. # See: https://curl.se/libcurl/c/CURLOPT_HTTPPROXYTUNNEL.html session.curl.setopt(CurlOpt.HTTPPROXYTUNNEL, 1) # curl_cffi does not currently set these for proxies session.curl.setopt(CurlOpt.PROXY_CAINFO, certifi.where()) if not self.verify: session.curl.setopt(CurlOpt.PROXY_SSL_VERIFYPEER, 0) session.curl.setopt(CurlOpt.PROXY_SSL_VERIFYHOST, 0) headers = self._get_impersonate_headers(request) if self._client_cert: session.curl.setopt(CurlOpt.SSLCERT, self._client_cert['client_certificate']) client_certificate_key = self._client_cert.get('client_certificate_key') client_certificate_password = self._client_cert.get('client_certificate_password') if client_certificate_key: session.curl.setopt(CurlOpt.SSLKEY, client_certificate_key) if client_certificate_password: session.curl.setopt(CurlOpt.KEYPASSWD, client_certificate_password) timeout = self._calculate_timeout(request) # set CURLOPT_LOW_SPEED_LIMIT and CURLOPT_LOW_SPEED_TIME to act as a read timeout. [1] # curl_cffi does not currently do this. [2] # Note: CURLOPT_LOW_SPEED_TIME is in seconds, so we need to round up to the nearest second. [3] # [1] https://unix.stackexchange.com/a/305311 # [2] https://github.com/yifeikong/curl_cffi/issues/156 # [3] https://curl.se/libcurl/c/CURLOPT_LOW_SPEED_TIME.html session.curl.setopt(CurlOpt.LOW_SPEED_LIMIT, 1) # 1 byte per second session.curl.setopt(CurlOpt.LOW_SPEED_TIME, math.ceil(timeout)) try: curl_response = session.request( method=request.method, url=request.url, headers=headers, data=request.data, verify=self.verify, max_redirects=5, timeout=timeout, impersonate=self._SUPPORTED_IMPERSONATE_TARGET_MAP.get( self._get_request_target(request)), interface=self.source_address, stream=True ) except curl_cffi.requests.errors.RequestsError as e: if e.code == CurlECode.PEER_FAILED_VERIFICATION: raise CertificateVerifyError(cause=e) from e elif e.code == CurlECode.SSL_CONNECT_ERROR: raise SSLError(cause=e) from e elif e.code == CurlECode.TOO_MANY_REDIRECTS: max_redirects_exceeded = True curl_response = e.response elif ( e.code == CurlECode.PROXY or (e.code == CurlECode.RECV_ERROR and 'Received HTTP code 407 from proxy after CONNECT' in str(e)) ): raise ProxyError(cause=e) from e else: raise TransportError(cause=e) from e response = CurlCFFIResponseAdapter(curl_response) if not 200 <= response.status < 300: raise HTTPError(response, redirect_loop=max_redirects_exceeded) return response @register_preference(CurlCFFIRH) def curl_cffi_preference(rh, request): return -100