Compare commits
3 Commits
f85f5c6bd8
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28d1d34dbd
| Author | SHA1 | Date |
|---|---|---|
emdee
|
28d1d34dbd | 2 years ago |
|
emdee
|
94c0834092 | 2 years ago |
|
emdee
|
2ea65cc181 | 2 years ago |
@ -1,265 +0,0 @@
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# -*- mode: python; indent-tabs-mode: nil; py-indent-offset: 4; coding: utf-8 -*-
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from requests import adapters
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from requests.utils import (
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DEFAULT_CA_BUNDLE_PATH,
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get_auth_from_url,
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get_encoding_from_headers,
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prepend_scheme_if_needed,
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select_proxy,
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urldefragauth,
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)
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import urllib3
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from urllib3.util import parse_url
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from urllib3.util.retry import Retry
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from urllib3.util import Timeout as TimeoutSauce
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DEFAULT_POOLBLOCK = False
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DEFAULT_POOLSIZE = 10
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DEFAULT_RETRIES = 0
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DEFAULT_POOL_TIMEOUT = None
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class HTTPAdapter(adapters.HTTPAdapter):
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def __init__(self,
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pool_connections=DEFAULT_POOLSIZE,
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pool_maxsize=DEFAULT_POOLSIZE,
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max_retries=DEFAULT_RETRIES,
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pool_block=DEFAULT_POOLBLOCK
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):
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self.config = {}
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self.proxy_manager = {}
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if isinstance(max_retries, Retry):
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self.max_retries = max_retries
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else:
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max_retries = Retry.from_int(max_retries)
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self.max_retries = max_retries
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self._pool_connections = pool_connections
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self._pool_maxsize = pool_maxsize
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self._pool_block = pool_block
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self.init_poolmanager(pool_connections, pool_maxsize, block=pool_block)
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class HTTPSAdapter(HTTPAdapter):
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"""The built-in HTTP Adapter for urllib3.
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Provides a general-case interface for Requests sessions to contact HTTP and
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HTTPS urls by implementing the Transport Adapter interface. This class will
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usually be created by the :class:`Session <Session>` class under the
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covers.
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:param pool_connections: The number of urllib3 connection pools to cache.
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:param pool_maxsize: The maximum number of connections to save in the pool.
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:param max_retries: The maximum number of retries each connection
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should attempt. Note, this applies only to failed DNS lookups, socket
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connections and connection timeouts, never to requests where data has
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made it to the server. By default, Requests does not retry failed
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connections. If you need granular control over the conditions under
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which we retry a request, import urllib3's ``Retry`` class and pass
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that instead.
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:param pool_block: Whether the connection pool should block for connections.
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Usage::
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>>> import requests
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>>> s = requests.Session()
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>>> a = requests.adapters.HTTPAdapter(max_retries=3)
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>>> s.mount('http://', a)
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"""
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def __init__(
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self,
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pool_connections=DEFAULT_POOLSIZE,
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pool_maxsize=1,
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max_retries=3,
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pool_block=DEFAULT_POOLBLOCK,
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):
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retries = Retry(connect=max_retries, read=2, redirect=0)
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adapters.HTTPAdapter.__init__(self,
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pool_connections=pool_connections,
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pool_maxsize=pool_maxsize,
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max_retries=retries,
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pool_block=pool_block)
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def get_connection(self, url, proxies=None, use_forwarding_for_https=True):
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"""Returns a urllib3 connection for the given URL. This should not be
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called from user code, and is only exposed for use when subclassing the
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:class:`HTTPAdapter <requests.adapters.HTTPAdapter>`.
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:param url: The URL to connect to.
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:param proxies: (optional) A Requests-style dictionary of proxies used on this request.
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:rtype: urllib3.ConnectionPool
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"""
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proxy = select_proxy(url, proxies)
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if proxy:
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proxy = prepend_scheme_if_needed(proxy, "http")
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proxy_url = parse_url(proxy)
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if not proxy_url.host:
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raise InvalidProxyURL(
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"Please check proxy URL. It is malformed "
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"and could be missing the host."
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)
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proxy_manager = self.proxy_manager_for(proxy)
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conn = proxy_manager.connection_from_url(url)
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else:
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# Only scheme should be lower case
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parsed = urlparse(url)
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url = parsed.geturl()
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conn = self.poolmanager.connection_from_url(url, use_forwarding_for_https=True)
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return conn
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def send(
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self, request, stream=False, timeout=None, verify=True, cert=None, proxies=None
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):
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"""Sends PreparedRequest object. Returns Response object.
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:param request: The :class:`PreparedRequest <PreparedRequest>` being sent.
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:param stream: (optional) Whether to stream the request content.
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:param timeout: (optional) How long to wait for the server to send
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data before giving up, as a float, or a :ref:`(connect timeout,
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read timeout) <timeouts>` tuple.
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:type timeout: float or tuple or urllib3 Timeout object
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:param verify: (optional) Either a boolean, in which case it controls whether
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we verify the server's TLS certificate, or a string, in which case it
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must be a path to a CA bundle to use
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:param cert: (optional) Any user-provided SSL certificate to be trusted.
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:param proxies: (optional) The proxies dictionary to apply to the request.
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:rtype: requests.Response
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"""
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try:
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#? _socks_options
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conn = self.get_connection(request.url, proxies, use_forwarding_for_https=True)
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except LocationValueError as e:
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raise InvalidURL(e, request=request)
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self.cert_verify(conn, request.url, verify, cert)
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url = self.request_url(request, proxies)
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self.add_headers(
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request,
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stream=stream,
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timeout=timeout,
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verify=verify,
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cert=cert,
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proxies=proxies,
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)
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chunked = not (request.body is None or "Content-Length" in request.headers)
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if isinstance(timeout, tuple):
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try:
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connect, read = timeout
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timeout = TimeoutSauce(connect=connect, read=read)
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except ValueError:
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raise ValueError(
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f"Invalid timeout {timeout}. Pass a (connect, read) timeout tuple, "
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f"or a single float to set both timeouts to the same value."
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)
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elif isinstance(timeout, TimeoutSauce):
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pass
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else:
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timeout = TimeoutSauce(connect=timeout, read=timeout)
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try:
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if not chunked:
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resp = conn.urlopen(
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method=request.method,
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url=url,
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body=request.body,
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headers=request.headers,
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redirect=False,
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assert_same_host=False,
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preload_content=False,
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decode_content=False,
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retries=self.max_retries,
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timeout=timeout,
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)
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# Send the request.
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else:
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if hasattr(conn, "proxy_pool"):
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conn = conn.proxy_pool
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low_conn = conn._get_conn(timeout=DEFAULT_POOL_TIMEOUT)
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try:
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skip_host = "Host" in request.headers
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low_conn.putrequest(
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request.method,
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url,
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skip_accept_encoding=True,
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skip_host=skip_host,
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)
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for header, value in request.headers.items():
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low_conn.putheader(header, value)
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low_conn.endheaders()
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for i in request.body:
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low_conn.send(hex(len(i))[2:].encode("utf-8"))
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low_conn.send(b"\r\n")
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low_conn.send(i)
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low_conn.send(b"\r\n")
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low_conn.send(b"0\r\n\r\n")
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# Receive the response from the server
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r = low_conn.getresponse()
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resp = HTTPResponse.from_httplib(
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r,
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pool=conn,
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connection=low_conn,
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preload_content=False,
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decode_content=False,
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)
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except Exception:
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# If we hit any problems here, clean up the connection.
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# Then, raise so that we can handle the actual exception.
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low_conn.close()
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raise
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except (ProtocolError, OSError) as err:
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raise ConnectionError(err, request=request)
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except MaxRetryError as e:
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if isinstance(e.reason, ConnectTimeoutError):
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# TODO: Remove this in 3.0.0: see #2811
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if not isinstance(e.reason, NewConnectionError):
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raise ConnectTimeout(e, request=request)
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if isinstance(e.reason, ResponseError):
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raise RetryError(e, request=request)
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if isinstance(e.reason, _ProxyError):
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raise ProxyError(e, request=request)
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if isinstance(e.reason, _SSLError):
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# This branch is for urllib3 v1.22 and later.
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raise SSLError(e, request=request)
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raise ConnectionError(e, request=request)
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except ClosedPoolError as e:
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raise ConnectionError(e, request=request)
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except _ProxyError as e:
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raise ProxyError(e)
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except (_SSLError, _HTTPError) as e:
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if isinstance(e, _SSLError):
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# This branch is for urllib3 versions earlier than v1.22
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raise SSLError(e, request=request)
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elif isinstance(e, ReadTimeoutError):
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raise ReadTimeout(e, request=request)
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elif isinstance(e, _InvalidHeader):
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raise InvalidHeader(e, request=request)
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else:
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raise
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return self.build_response(request, resp)
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@ -0,0 +1,79 @@
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#!/usr/local/bin/python3.sh
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# -*-mode: python; indent-tabs-mode: nil; py-indent-offset: 4; coding: utf-8 -*
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import sys
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import os
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import traceback
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from phantompy import Render
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global LOG
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import logging
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import warnings
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warnings.filterwarnings('ignore')
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LOG = logging.getLogger()
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class LookFor(Render):
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def __init__(self, url, outfile, jsfile=None):
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self.uri = url
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Render.__init__(self, url, outfile, jsfile)
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def ilookfor(self, html):
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import json
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marker = '<pre style="word-wrap: break-word; white-space: pre-wrap;">'
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if marker not in html: return ''
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i = html.find(marker) + len(marker)
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html = html[i:]
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assert html[0] == '{', html
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i = html.find('</pre')
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html = html[:i]
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assert html[-1] == '}', html
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LOG.debug(f"Found {len(html)} json")
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o = json.loads(html)
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if "Answer" not in o.keys() or type(o["Answer"]) != list:
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LOG.warn(f"FAIL {self.uri}")
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return 1
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for elt in o["Answer"]:
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assert type(elt) == dict, elt
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assert 'type' in elt, elt
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if elt['type'] != 16: continue
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assert 'data' in elt, elt
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if elt['data'] == 'we-run-this-tor-relay':
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LOG.info(f"OK {self.uri}")
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return 0
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LOG.warn(f"BAD {self.uri}")
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return 2
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def _html_callback(self, *args):
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"""print(self, QPrinter, Callable[[bool], None])"""
|
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if type(args[0]) is str:
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self._save(args[0])
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i = self.ilookfor(args[0])
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self._exit(i)
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def _save(self, html):
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sfile = self.outfile.replace('.pdf','.out')
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# CompleteHtmlSaveFormat SingleHtmlSaveFormat MimeHtmlSaveFormat
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with open(sfile, 'wt') as ofd:
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ofd.write(html)
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LOG.debug(f"Saved {sfile}")
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|
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def _loadFinished(self, result):
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LOG.debug("phantom.py: Loading finished!")
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self.toHtml(self._html_callback)
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def main():
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if (len(sys.argv) < 3):
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LOG.info("USAGE: lookupdns.py <url> <pdf-file> [<javascript-file>]")
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else:
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url = sys.argv[1]
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outfile = sys.argv[2]
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jsfile = sys.argv[3] if len(sys.argv) > 3 else None
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r = LookFor(url, outfile, jsfile)
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sys.exit(0)
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|
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if __name__ == "__main__":
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main()
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@ -0,0 +1,260 @@
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#!/usr/local/bin/python3.sh
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# -*-mode: python; indent-tabs-mode: nil; py-indent-offset: 4; coding: utf-8 -*-
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# https://gist.github.com/michaelfranzl/91f0cc13c56120391b949f885643e974/raw/a0601515e7a575bc4c7d4d2a20973b29b6c6f2df/phantom.py
|
||||
"""
|
||||
# phantom.py
|
||||
|
||||
Simple but fully scriptable headless QtWebKit browser using PyQt5 in Python3,
|
||||
specialized in executing external JavaScript and generating PDF files. A lean
|
||||
replacement for other bulky headless browser frameworks.
|
||||
|
||||
|
||||
## Usage
|
||||
|
||||
If you have a display attached:
|
||||
|
||||
./phantom.py <url> <pdf-file> [<javascript-file>]
|
||||
|
||||
If you don't have a display attached (i.e. on a remote server):
|
||||
|
||||
xvfb-run ./phantom.py <url> <pdf-file> [<javascript-file>]
|
||||
|
||||
Arguments:
|
||||
|
||||
<url> Can be a http(s) URL or a path to a local file
|
||||
<pdf-file> Path and name of PDF file to generate
|
||||
[<javascript-file>] (optional) Path and name of a JavaScript file to execute
|
||||
|
||||
|
||||
## Features
|
||||
|
||||
* Generate a PDF screenshot of the web page after it is completely loaded.
|
||||
* Optionally execute a local JavaScript file specified by the argument
|
||||
<javascript-file> after the web page is completely loaded, and before
|
||||
the PDF is generated.
|
||||
* console.log's will be printed to stdout.
|
||||
* Easily add new features by changing the source code of this script, without
|
||||
compiling C++ code. For more advanced applications, consider attaching
|
||||
PyQt objects/methods to WebKit's JavaScript space by using
|
||||
`QWebFrame::addToJavaScriptWindowObject()`.
|
||||
|
||||
If you execute an external <javascript-file>, phantom.py has no way of knowing
|
||||
when that script has finished doing its work. For this reason, the external
|
||||
script should execute `console.log("__PHANTOM_PY_DONE__");` when done. This will
|
||||
trigger the PDF generation, after which phantom.py will exit. If no
|
||||
`__PHANTOM_PY_DONE__` string is seen on the console for 10 seconds, phantom.py
|
||||
will exit without doing anything. This behavior could be implemented more
|
||||
elegantly without console.log's but it is the simplest solution.
|
||||
|
||||
It is important to remember that since you're just running WebKit, you can use
|
||||
everything that WebKit supports, including the usual JS client libraries, CSS,
|
||||
CSS @media types, etc.
|
||||
|
||||
|
||||
## Dependencies
|
||||
|
||||
* Python3
|
||||
* PyQt5
|
||||
* xvfb (optional for display-less machines)
|
||||
|
||||
Installation of dependencies in Debian Stretch is easy:
|
||||
|
||||
apt-get install xvfb python3-pyqt5 python3-pyqt5.qtwebkit
|
||||
|
||||
Finding the equivalent for other OSes is an exercise that I leave to you.
|
||||
|
||||
|
||||
## Examples
|
||||
|
||||
Given the following file /tmp/test.html
|
||||
|
||||
<html>
|
||||
<body>
|
||||
<p>foo <span id="id1">foo</span> <span id="id2">foo</span></p>
|
||||
</body>
|
||||
<script>
|
||||
document.getElementById('id1').innerHTML = "bar";
|
||||
</script>
|
||||
</html>
|
||||
|
||||
... and the following file /tmp/test.js:
|
||||
|
||||
document.getElementById('id2').innerHTML = "baz";
|
||||
console.log("__PHANTOM_PY_DONE__");
|
||||
|
||||
... and running this script (without attached display) ...
|
||||
|
||||
xvfb-run python3 phantom.py /tmp/test.html /tmp/out.pdf /tmp/test.js
|
||||
|
||||
... you will get a PDF file /tmp/out.pdf with the contents "foo bar baz".
|
||||
|
||||
Note that the second occurrence of "foo" has been replaced by the web page's own
|
||||
script, and the third occurrence of "foo" by the external JS file.
|
||||
|
||||
|
||||
## License
|
||||
|
||||
Copyright 2017 Michael Karl Franzl
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy of
|
||||
this software and associated documentation files (the "Software"), to deal in
|
||||
the Software without restriction, including without limitation the rights to
|
||||
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
|
||||
of the Software, and to permit persons to whom the Software is furnished to do
|
||||
so, subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be included in all
|
||||
copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
||||
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
|
||||
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
|
||||
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
"""
|
||||
|
||||
import sys
|
||||
import os
|
||||
import traceback
|
||||
import atexit
|
||||
from PyQt5.QtCore import QUrl
|
||||
from PyQt5.QtCore import QTimer
|
||||
from PyQt5.QtWidgets import QApplication
|
||||
from PyQt5.QtPrintSupport import QPrinter
|
||||
from PyQt5.QtWebEngineWidgets import QWebEnginePage as QWebPage
|
||||
|
||||
global LOG
|
||||
import logging
|
||||
import warnings
|
||||
warnings.filterwarnings('ignore')
|
||||
LOG = logging.getLogger()
|
||||
|
||||
def prepare():
|
||||
sfile = '/tmp/test.js'
|
||||
if not os.path.exists(sfile):
|
||||
with open(sfile, 'wt') as ofd:
|
||||
ofd.write("""
|
||||
document.getElementById('id2').innerHTML = "baz";
|
||||
console.log("__PHANTOM_PY_DONE__");
|
||||
""")
|
||||
sys.stderr.write(f"wrote {sfile} ")
|
||||
sfile = '/tmp/test.html'
|
||||
if not os.path.exists(sfile):
|
||||
with open(sfile, 'wt') as ofd:
|
||||
ofd.write("""
|
||||
<html>
|
||||
<body>
|
||||
<p>foo <span id="id1">foo</span> <span id="id2">foo</span></p>
|
||||
</body>
|
||||
<script>
|
||||
document.getElementById('id1').innerHTML = "bar";
|
||||
</script>
|
||||
</html>
|
||||
""")
|
||||
sys.stderr.write(f"wrote {sfile} ")
|
||||
sys.stderr.write("\n")
|
||||
|
||||
class Render(QWebPage):
|
||||
def __init__(self, url, outfile, jsfile=None):
|
||||
self.app = QApplication(sys.argv)
|
||||
|
||||
QWebPage.__init__(self)
|
||||
|
||||
self.jsfile = jsfile
|
||||
self.outfile = outfile
|
||||
|
||||
qurl = QUrl.fromUserInput(url)
|
||||
|
||||
LOG.debug(f"phantom.py: URL= {qurl} OUTFILE={outfile} JSFILE= {jsfile)")
|
||||
|
||||
# The PDF generation only happens when the special string __PHANTOM_PY_DONE__
|
||||
# is sent to console.log(). The following JS string will be executed by
|
||||
# default, when no external JavaScript file is specified.
|
||||
self.js_contents = "setTimeout(function() { console.log('__PHANTOM_PY_DONE__') }, 5000);";
|
||||
|
||||
if jsfile:
|
||||
try:
|
||||
f = open(self.jsfile)
|
||||
self.js_contents = f.read()
|
||||
f.close()
|
||||
except:
|
||||
LOG.error(traceback.format_exc())
|
||||
self._exit(10)
|
||||
|
||||
self.loadFinished.connect(self._loadFinished)
|
||||
self.load(qurl)
|
||||
self.javaScriptConsoleMessage = self._onConsoleMessage
|
||||
|
||||
if False:
|
||||
# Run for a maximum of 10 seconds
|
||||
watchdog = QTimer()
|
||||
watchdog.setSingleShot(True)
|
||||
watchdog.timeout.connect(lambda: self._exit(9))
|
||||
watchdog.start(10000)
|
||||
|
||||
self.app.exec_()
|
||||
|
||||
def _onConsoleMessage(self, *args):
|
||||
if len(args) > 3:
|
||||
level, txt, lineno, filename = args
|
||||
else:
|
||||
level = 1
|
||||
txt, lineno, filename = args
|
||||
LOG.debug(f"CONSOLE {lineno} {txt} {filename}")
|
||||
if "__PHANTOM_PY_DONE__" in txt:
|
||||
# If we get this magic string, it means that the external JS is done
|
||||
self._print()
|
||||
if "__PHANTOM_PY_EXIT__" in txt:
|
||||
self._exit(0)
|
||||
|
||||
def _loadFinished(self, result):
|
||||
LOG.debug(f"phantom.py: Evaluating JS from {self.jsfile}")
|
||||
self.runJavaScript("document.documentElement.contentEditable=true")
|
||||
self.runJavaScript(self.js_contents)
|
||||
|
||||
def _printer_callback(self, *args):
|
||||
"""print(self, QPrinter, Callable[[bool], None])"""
|
||||
# print(f"_printer_callback {self.outfile} {args}")
|
||||
if args[0] is False:
|
||||
i = 1
|
||||
else:
|
||||
i = 0
|
||||
self._exit(i)
|
||||
|
||||
def _print(self):
|
||||
printer = QPrinter()
|
||||
printer.setPageMargins(10, 10, 10, 10, QPrinter.Millimeter)
|
||||
printer.setPaperSize(QPrinter.A4)
|
||||
printer.setCreator("phantom.py by Michael Karl Franzl")
|
||||
printer.setOutputFormat(QPrinter.PdfFormat);
|
||||
printer.setOutputFileName(self.outfile);
|
||||
self.print(printer, self._printer_callback)
|
||||
LOG.debug("phantom.py: Printed")
|
||||
|
||||
def _exit(self, val):
|
||||
LOG.debug(f"phantom.py: Exiting with val {val}")
|
||||
|
||||
# Run for a maximum of 10 seconds
|
||||
watchdog = QTimer()
|
||||
watchdog.setSingleShot(True)
|
||||
watchdog.timeout.connect(lambda: sys.exit(val))
|
||||
watchdog.start(10000)
|
||||
self.app.exit(val)
|
||||
atexit._clear()
|
||||
sys.exit(val)
|
||||
|
||||
def main():
|
||||
if (len(sys.argv) < 3):
|
||||
LOG.info("USAGE: ./phantom.py <url> <pdf-file> [<javascript-file>]")
|
||||
else:
|
||||
url = sys.argv[1]
|
||||
outfile = sys.argv[2]
|
||||
jsfile = sys.argv[3] if len(sys.argv) > 3 else None
|
||||
r = Render(url, outfile, jsfile)
|
||||
|
||||
sys.exit(0)
|
||||
|
||||
if __name__ == "__main__":
|
||||
main()
|
||||
|
||||
Loading…
Reference in New Issue