mirror of
https://github.com/Grasscutters/mitmproxy.git
synced 2024-11-23 00:01:36 +00:00
165 lines
5.7 KiB
Python
165 lines
5.7 KiB
Python
from __future__ import (absolute_import, print_function, division)
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from io import BytesIO, StringIO
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import urllib
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import time
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import traceback
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import six
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from six.moves import urllib
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from netlib.utils import always_bytes, native
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from . import http, tcp
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class ClientConn(object):
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def __init__(self, address):
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self.address = tcp.Address.wrap(address)
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class Flow(object):
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def __init__(self, address, request):
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self.client_conn = ClientConn(address)
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self.request = request
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class Request(object):
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def __init__(self, scheme, method, path, http_version, headers, content):
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self.scheme, self.method, self.path = scheme, method, path
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self.headers, self.content = headers, content
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self.http_version = http_version
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def date_time_string():
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"""Return the current date and time formatted for a message header."""
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WEEKS = ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
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MONTHS = [
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None,
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'Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun',
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'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'
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]
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now = time.time()
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year, month, day, hh, mm, ss, wd, y_, z_ = time.gmtime(now)
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s = "%s, %02d %3s %4d %02d:%02d:%02d GMT" % (
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WEEKS[wd],
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day, MONTHS[month], year,
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hh, mm, ss
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)
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return s
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class WSGIAdaptor(object):
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def __init__(self, app, domain, port, sversion):
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self.app, self.domain, self.port, self.sversion = app, domain, port, sversion
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def make_environ(self, flow, errsoc, **extra):
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path = native(flow.request.path, "latin-1")
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if '?' in path:
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path_info, query = native(path, "latin-1").split('?', 1)
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else:
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path_info = path
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query = ''
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environ = {
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'wsgi.version': (1, 0),
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'wsgi.url_scheme': native(flow.request.scheme, "latin-1"),
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'wsgi.input': BytesIO(flow.request.content or b""),
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'wsgi.errors': errsoc,
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'wsgi.multithread': True,
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'wsgi.multiprocess': False,
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'wsgi.run_once': False,
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'SERVER_SOFTWARE': self.sversion,
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'REQUEST_METHOD': native(flow.request.method, "latin-1"),
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'SCRIPT_NAME': '',
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'PATH_INFO': urllib.parse.unquote(path_info),
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'QUERY_STRING': query,
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'CONTENT_TYPE': native(flow.request.headers.get('Content-Type', ''), "latin-1"),
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'CONTENT_LENGTH': native(flow.request.headers.get('Content-Length', ''), "latin-1"),
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'SERVER_NAME': self.domain,
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'SERVER_PORT': str(self.port),
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'SERVER_PROTOCOL': native(flow.request.http_version, "latin-1"),
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}
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environ.update(extra)
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if flow.client_conn.address:
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environ["REMOTE_ADDR"] = native(flow.client_conn.address.host, "latin-1")
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environ["REMOTE_PORT"] = flow.client_conn.address.port
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for key, value in flow.request.headers.items():
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key = 'HTTP_' + native(key, "latin-1").upper().replace('-', '_')
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if key not in ('HTTP_CONTENT_TYPE', 'HTTP_CONTENT_LENGTH'):
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environ[key] = value
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return environ
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def error_page(self, soc, headers_sent, s):
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"""
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Make a best-effort attempt to write an error page. If headers are
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already sent, we just bung the error into the page.
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"""
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c = """
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<html>
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<h1>Internal Server Error</h1>
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<pre>{err}"</pre>
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</html>
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""".format(err=s).strip().encode()
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if not headers_sent:
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soc.write(b"HTTP/1.1 500 Internal Server Error\r\n")
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soc.write(b"Content-Type: text/html\r\n")
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soc.write("Content-Length: {length}\r\n".format(length=len(c)).encode())
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soc.write(b"\r\n")
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soc.write(c)
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def serve(self, request, soc, **env):
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state = dict(
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response_started=False,
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headers_sent=False,
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status=None,
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headers=None
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)
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def write(data):
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if not state["headers_sent"]:
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soc.write("HTTP/1.1 {status}\r\n".format(status=state["status"]).encode())
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headers = state["headers"]
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if 'server' not in headers:
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headers["Server"] = self.sversion
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if 'date' not in headers:
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headers["Date"] = date_time_string()
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soc.write(bytes(headers))
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soc.write(b"\r\n")
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state["headers_sent"] = True
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if data:
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soc.write(data)
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soc.flush()
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def start_response(status, headers, exc_info=None):
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if exc_info:
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if state["headers_sent"]:
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six.reraise(*exc_info)
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elif state["status"]:
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raise AssertionError('Response already started')
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state["status"] = status
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state["headers"] = http.Headers([[always_bytes(k), always_bytes(v)] for k,v in headers])
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if exc_info:
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self.error_page(soc, state["headers_sent"], traceback.format_tb(exc_info[2]))
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state["headers_sent"] = True
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errs = six.BytesIO()
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try:
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dataiter = self.app(
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self.make_environ(request, errs, **env), start_response
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)
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for i in dataiter:
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write(i)
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if not state["headers_sent"]:
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write(b"")
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except Exception as e:
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try:
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s = traceback.format_exc()
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errs.write(s.encode("utf-8", "replace"))
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self.error_page(soc, state["headers_sent"], s)
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except Exception: # pragma: no cover
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pass
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return errs.getvalue()
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