mirror of
https://github.com/Grasscutters/mitmproxy.git
synced 2024-11-26 18:18:25 +00:00
refactor ProxyHandler, remove duplicate code
This commit is contained in:
Maximilian Hils
parent
2be19a5620
commit
a78b185278
@ -334,6 +334,15 @@ class ProxyHandler(tcp.BaseHandler):
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line = fp.readline()
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return line
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def read_request(self, client_conn):
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self.rfile.reset_timestamps()
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if self.config.transparent_proxy:
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return self.read_request_transparent(client_conn)
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elif self.config.reverse_proxy:
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return self.read_request_reverse(client_conn)
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else:
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return self.read_request_proxy(client_conn)
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def read_request_transparent(self, client_conn):
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orig = self.config.transparent_proxy["resolver"].original_addr(self.connection)
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if not orig:
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@ -346,95 +355,82 @@ class ProxyHandler(tcp.BaseHandler):
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else:
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scheme = "http"
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return self._read_request_transparent(client_conn, scheme, host, port)
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return self._read_request_origin_form(client_conn, scheme, host, port)
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def _read_request_transparent(self, client_conn, scheme, host, port):
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def read_request_reverse(self, client_conn):
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scheme, host, port = self.config.reverse_proxy
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return self._read_request_origin_form(client_conn, scheme, host, port)
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def read_request_proxy(self, client_conn):
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# Check for a CONNECT command.
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if not self.proxy_connect_state:
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line = self.get_line(self.rfile)
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if line == "":
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return None
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self.proxy_connect_state = self._read_request_authority_form(line)
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# Check for an actual request
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if self.proxy_connect_state:
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host, port, _ = self.proxy_connect_state
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return self._read_request_origin_form(client_conn, "https", host, port)
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else:
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# noinspection PyUnboundLocalVariable
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return self._read_request_absolute_form(client_conn, line)
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def _read_request_authority_form(self, line):
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connparts = http.parse_init_connect(line)
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if connparts:
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self.read_headers(authenticate=True)
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# respond according to http://tools.ietf.org/html/draft-luotonen-web-proxy-tunneling-01 section 3.2
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self.wfile.write(
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'HTTP/1.1 200 Connection established\r\n' +
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('Proxy-agent: %s\r\n'%self.server_version) +
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'\r\n'
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)
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self.wfile.flush()
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return connparts
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def _read_request_absolute_form(self, client_conn, line):
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r = http.parse_init_proxy(line)
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if not r:
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raise ProxyError(400, "Bad HTTP request line: %s"%repr(line))
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method, scheme, host, port, path, httpversion = r
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headers = self.read_headers(authenticate=True)
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content = http.read_http_body_request(
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self.rfile, self.wfile, headers, httpversion, self.config.body_size_limit
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)
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return flow.Request(
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client_conn, httpversion, host, port, scheme, method, path, headers, content,
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self.rfile.first_byte_timestamp, utils.timestamp()
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)
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def _read_request_origin_form(self, client_conn, scheme, host, port):
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"""
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Read a transparent HTTP request. Transparent means that the client isn't aware of proxying.
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In other words, the client request starts with
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"GET /foo.html HTTP/1.1"
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rather than
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"CONNECT example.com:80 HTTP/1.1"
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Read a HTTP request with regular (origin-form) request line (method, uri, httpversion - RFC2616 5.1).
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The request destination is already known from one of the following sources:
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1) transparent proxy: destination provided by platform resolver
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2) reverse proxy: fixed destination
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3) regular proxy: known from CONNECT command.
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"""
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if scheme.lower() == "https" and not self.ssl_established:
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self.establish_ssl(client_conn, host, port)
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line = self.get_line(self.rfile)
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if line == "":
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return None
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r = http.parse_init_http(line)
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if not r:
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raise ProxyError(400, "Bad HTTP request line: %s"%repr(line))
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method, path, httpversion = r
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headers = self.read_headers(authenticate=False)
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content = http.read_http_body_request(
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self.rfile, self.wfile, headers, httpversion, self.config.body_size_limit
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)
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self.rfile, self.wfile, headers, httpversion, self.config.body_size_limit
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)
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return flow.Request(
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client_conn,httpversion, host, port, scheme, method, path, headers, content,
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self.rfile.first_byte_timestamp, utils.timestamp()
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)
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def read_request_proxy(self, client_conn):
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line = self.get_line(self.rfile)
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if line == "":
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return None
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if not self.proxy_connect_state:
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connparts = http.parse_init_connect(line)
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if connparts:
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host, port, httpversion = connparts
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headers = self.read_headers(authenticate=True)
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self.wfile.write(
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'HTTP/1.1 200 Connection established\r\n' +
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('Proxy-agent: %s\r\n'%self.server_version) +
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'\r\n'
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)
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self.wfile.flush()
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self.establish_ssl(client_conn, host, port)
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self.proxy_connect_state = (host, port, httpversion)
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line = self.rfile.readline(line)
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if self.proxy_connect_state:
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r = http.parse_init_http(line)
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if not r:
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raise ProxyError(400, "Bad HTTP request line: %s"%repr(line))
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method, path, httpversion = r
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headers = self.read_headers(authenticate=False)
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host, port, _ = self.proxy_connect_state
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content = http.read_http_body_request(
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self.rfile, self.wfile, headers, httpversion, self.config.body_size_limit
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)
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return flow.Request(
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client_conn, httpversion, host, port, "https", method, path, headers, content,
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self.rfile.first_byte_timestamp, utils.timestamp()
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)
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else:
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r = http.parse_init_proxy(line)
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if not r:
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raise ProxyError(400, "Bad HTTP request line: %s"%repr(line))
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method, scheme, host, port, path, httpversion = r
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headers = self.read_headers(authenticate=True)
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content = http.read_http_body_request(
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self.rfile, self.wfile, headers, httpversion, self.config.body_size_limit
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)
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return flow.Request(
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client_conn, httpversion, host, port, scheme, method, path, headers, content,
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self.rfile.first_byte_timestamp, utils.timestamp()
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)
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def read_request_reverse(self, client_conn):
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scheme, host, port = self.config.reverse_proxy
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return self._read_request_transparent(client_conn, scheme, host, port)
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def read_request(self, client_conn):
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self.rfile.reset_timestamps()
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if self.config.transparent_proxy:
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return self.read_request_transparent(client_conn)
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elif self.config.reverse_proxy:
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return self.read_request_reverse(client_conn)
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else:
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return self.read_request_proxy(client_conn)
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client_conn, httpversion, host, port, scheme, method, path, headers, content,
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self.rfile.first_byte_timestamp, utils.timestamp()
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)
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def read_headers(self, authenticate=False):
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headers = http.read_headers(self.rfile)
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