No abstract method for proxy plugin (#738)

* Remove abstractmethod for proxy plugin base class, remove unused methods from bundled plugins

* Move httpStatusCodes, httpMethods and Url within top-level proxy.http package

examples/https_connect_tunnel.py

@@ -14,7 +14,8 @@
 
 from proxy import Proxy
 from proxy.common.utils import build_http_response
-from proxy.http.parser import httpParserStates, httpStatusCodes
+from proxy.http import httpStatusCodes
+from proxy.http.parser import httpParserStates
 from proxy.core.base import BaseTcpTunnelHandler
 
 

proxy/common/pki.py

@@ -8,15 +8,16 @@
     :copyright: (c) 2013-present by Abhinav Singh and contributors.
     :license: BSD, see LICENSE for more details.
 """
-import time
+import os
 import sys
+import uuid
+import time
+import logging
+import tempfile
 import argparse
 import contextlib
-import os
-import uuid
 import subprocess
-import tempfile
-import logging
+
 from typing import List, Generator, Optional, Tuple
 
 from .utils import bytes_

proxy/core/connection/__init__.py

@@ -8,10 +8,11 @@
     :copyright: (c) 2013-present by Abhinav Singh and contributors.
     :license: BSD, see LICENSE for more details.
 """
-from .connection import TcpConnection, TcpConnectionUninitializedException, tcpConnectionTypes
+from .connection import TcpConnection, TcpConnectionUninitializedException
 from .client import TcpClientConnection
 from .server import TcpServerConnection
 from .pool import ConnectionPool
+from .types import tcpConnectionTypes
 
 __all__ = [
     'TcpConnection',

proxy/core/connection/client.py

@@ -8,15 +8,17 @@
     :copyright: (c) 2013-present by Abhinav Singh and contributors.
     :license: BSD, see LICENSE for more details.
 """
-import socket
 import ssl
+import socket
+
 from typing import Union, Tuple, Optional
 
-from .connection import TcpConnection, tcpConnectionTypes, TcpConnectionUninitializedException
+from .connection import TcpConnection, TcpConnectionUninitializedException
+from .types import tcpConnectionTypes
 
 
 class TcpClientConnection(TcpConnection):
-    """An accepted client connection request."""
+    """A buffered client connection object."""
 
     def __init__(
         self,

proxy/core/connection/connection.py

@@ -8,24 +8,18 @@
     :copyright: (c) 2013-present by Abhinav Singh and contributors.
     :license: BSD, see LICENSE for more details.
 """
-import socket
 import ssl
+import socket
 import logging
+
 from abc import ABC, abstractmethod
-from typing import NamedTuple, Optional, Union, List
+from typing import Optional, Union, List
 
 from ...common.constants import DEFAULT_BUFFER_SIZE, DEFAULT_MAX_SEND_SIZE
 
-logger = logging.getLogger(__name__)
-
+from .types import tcpConnectionTypes
 
-TcpConnectionTypes = NamedTuple(
-    'TcpConnectionTypes', [
-        ('SERVER', int),
-        ('CLIENT', int),
-    ],
-)
-tcpConnectionTypes = TcpConnectionTypes(1, 2)
+logger = logging.getLogger(__name__)
 
 
 class TcpConnectionUninitializedException(Exception):

proxy/core/connection/pool.py

@@ -13,6 +13,7 @@
 from typing import Set, Dict, Tuple
 
 from ...common.flag import flags
+
 from .server import TcpServerConnection
 
 logger = logging.getLogger(__name__)

proxy/core/connection/server.py

@@ -13,13 +13,14 @@
 
 from typing import Optional, Union, Tuple
 
-from .connection import TcpConnection, tcpConnectionTypes, TcpConnectionUninitializedException
-
 from ...common.utils import new_socket_connection
 
+from .connection import TcpConnection, TcpConnectionUninitializedException
+from .types import tcpConnectionTypes
+
 
 class TcpServerConnection(TcpConnection):
-    """Establishes connection to upstream server."""
+    """A buffered server connection object."""
 
     def __init__(self, host: str, port: int) -> None:
         super().__init__(tcpConnectionTypes.SERVER)

proxy/core/connection/types.py

@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+"""
+    proxy.py
+    ~~~~~~~~
+    ⚡⚡⚡ Fast, Lightweight, Pluggable, TLS interception capable proxy server focused on
+    Network monitoring, controls & Application development, testing, debugging.
+
+    :copyright: (c) 2013-present by Abhinav Singh and contributors.
+    :license: BSD, see LICENSE for more details.
+"""
+from typing import NamedTuple
+
+
+TcpConnectionTypes = NamedTuple(
+    'TcpConnectionTypes', [
+        ('SERVER', int),
+        ('CLIENT', int),
+    ],
+)
+
+tcpConnectionTypes = TcpConnectionTypes(1, 2)

proxy/dashboard/dashboard.py

@@ -16,9 +16,11 @@
 from .plugin import ProxyDashboardWebsocketPlugin
 
 from ..common.utils import build_http_response, bytes_
-from ..http.server import HttpWebServerPlugin, HttpWebServerBasePlugin, httpProtocolTypes
-from ..http.parser import HttpParser, httpStatusCodes
+
+from ..http import httpStatusCodes
+from ..http.parser import HttpParser
 from ..http.websocket import WebsocketFrame
+from ..http.server import HttpWebServerPlugin, HttpWebServerBasePlugin, httpProtocolTypes
 
 logger = logging.getLogger(__name__)
 

proxy/http/__init__.py

@@ -10,8 +10,14 @@
 """
 from .handler import HttpProtocolHandler
 from .plugin import HttpProtocolHandlerPlugin
+from .codes import httpStatusCodes
+from .methods import httpMethods
+from .url import Url
 
 __all__ = [
     'HttpProtocolHandler',
     'HttpProtocolHandlerPlugin',
+    'httpStatusCodes',
+    'httpMethods',
+    'Url',
 ]

proxy/http/exception/proxy_auth_failed.py

@@ -9,7 +9,9 @@
     :license: BSD, see LICENSE for more details.
 """
 from .base import HttpProtocolException
-from ..parser import HttpParser, httpStatusCodes
+
+from ..codes import httpStatusCodes
+from ..parser import HttpParser
 
 from ...common.constants import PROXY_AGENT_HEADER_VALUE, PROXY_AGENT_HEADER_KEY
 from ...common.utils import build_http_response

proxy/http/exception/proxy_conn_failed.py

@@ -9,7 +9,9 @@
     :license: BSD, see LICENSE for more details.
 """
 from .base import HttpProtocolException
-from ..parser import HttpParser, httpStatusCodes
+
+from ..codes import httpStatusCodes
+from ..parser import HttpParser
 
 from ...common.constants import PROXY_AGENT_HEADER_VALUE, PROXY_AGENT_HEADER_KEY
 from ...common.utils import build_http_response

proxy/http/handler.py

@@ -8,13 +8,13 @@
     :copyright: (c) 2013-present by Abhinav Singh and contributors.
     :license: BSD, see LICENSE for more details.
 """
-import socket
-import selectors
 import ssl
 import time
-import contextlib
 import errno
+import socket
 import logging
+import selectors
+import contextlib
 
 from typing import Tuple, List, Union, Optional, Generator, Dict, Any
 

proxy/http/parser/methods.py → proxy/http/methods.py

@@ -24,6 +24,7 @@
         ('PATCH', bytes),
     ],
 )
+
 httpMethods = HttpMethods(
     b'GET',
     b'HEAD',

proxy/http/parser/__init__.py

@@ -10,10 +10,7 @@
 """
 from .parser import HttpParser
 from .chunk import ChunkParser, chunkParserStates
-from .codes import httpStatusCodes
-from .methods import httpMethods
 from .types import httpParserStates, httpParserTypes
-from .url import Url
 from .protocol import ProxyProtocol, PROXY_PROTOCOL_V2_SIGNATURE
 
 __all__ = [
@@ -22,9 +19,6 @@
     'httpParserStates',
     'ChunkParser',
     'chunkParserStates',
-    'httpStatusCodes',
-    'httpMethods',
-    'Url',
     'ProxyProtocol',
     'PROXY_PROTOCOL_V2_SIGNATURE',
 ]

proxy/http/parser/parser.py

@@ -16,8 +16,9 @@
 from ...common.utils import build_http_request, build_http_response, find_http_line, text_
 from ...common.flag import flags
 
-from .url import Url
-from .methods import httpMethods
+from ..url import Url
+from ..methods import httpMethods
+
 from .protocol import ProxyProtocol
 from .chunk import ChunkParser, chunkParserStates
 from .types import httpParserTypes, httpParserStates

proxy/http/parser/protocol.py

@@ -9,6 +9,7 @@
     :license: BSD, see LICENSE for more details.
 """
 from typing import Optional, Tuple
+
 from ...common.constants import WHITESPACE
 
 PROXY_PROTOCOL_V2_SIGNATURE = b'\x0D\x0A\x0D\x0A\x00\x0D\x0A\x51\x55\x49\x54\x0A'

proxy/http/plugin.py

@@ -8,11 +8,11 @@
     :copyright: (c) 2013-present by Abhinav Singh and contributors.
     :license: BSD, see LICENSE for more details.
 """
-import argparse
 import socket
+import argparse
 
-from abc import ABC, abstractmethod
 from uuid import UUID
+from abc import ABC, abstractmethod
 from typing import Tuple, List, Union, Optional
 
 from .parser import HttpParser

proxy/http/proxy/auth.py

@@ -11,6 +11,7 @@
 from typing import Optional
 
 from ..exception import ProxyAuthenticationFailed
+
 from ...common.flag import flags
 from ...common.constants import DEFAULT_BASIC_AUTH
 from ...http.parser import HttpParser
@@ -41,14 +42,3 @@ def before_upstream_connection(
                     or parts[1] != self.flags.auth_code:
                 raise ProxyAuthenticationFailed()
         return request
-
-    def handle_client_request(
-            self, request: HttpParser,
-    ) -> Optional[HttpParser]:
-        return request
-
-    def handle_upstream_chunk(self, chunk: memoryview) -> memoryview:
-        return chunk    # pragma: no cover
-
-    def on_upstream_connection_close(self) -> None:
-        pass    # pragma: no cover

proxy/http/proxy/plugin.py

@@ -11,9 +11,9 @@
 import socket
 import argparse
 
+from abc import ABC
 from uuid import UUID
 from typing import Any, Dict, List, Optional, Tuple
-from abc import ABC, abstractmethod
 
 from ..parser import HttpParser
 
@@ -93,7 +93,9 @@ def resolve_dns(self, host: str, port: int) -> Tuple[Optional[str], Optional[Tup
         """
         return None, None
 
-    @abstractmethod
+    # No longer abstract since 2.4.0
+    #
+    # @abstractmethod
     def before_upstream_connection(
             self, request: HttpParser,
     ) -> Optional[HttpParser]:
@@ -122,7 +124,9 @@ def handle_client_data(
         """
         return raw  # pragma: no cover
 
-    @abstractmethod
+    # No longer abstract since 2.4.0
+    #
+    # @abstractmethod
     def handle_client_request(
             self, request: HttpParser,
     ) -> Optional[HttpParser]:
@@ -142,15 +146,19 @@ def handle_client_request(
         """
         return request  # pragma: no cover
 
-    @abstractmethod
+    # No longer abstract since 2.4.0
+    #
+    # @abstractmethod
     def handle_upstream_chunk(self, chunk: memoryview) -> memoryview:
         """Handler called right after receiving raw response from upstream server.
 
         For HTTPS connections, chunk will be encrypted unless
         TLS interception is also enabled."""
         return chunk  # pragma: no cover
 
-    @abstractmethod
+    # No longer abstract since 2.4.0
+    #
+    # @abstractmethod
     def on_upstream_connection_close(self) -> None:
         """Handler called right after upstream connection has been closed."""
         pass  # pragma: no cover

proxy/http/proxy/server.py

@@ -20,9 +20,12 @@
 from typing import Optional, List, Union, Dict, cast, Any, Tuple
 
 from .plugin import HttpProxyBasePlugin
+
+from ..methods import httpMethods
+from ..codes import httpStatusCodes
 from ..plugin import HttpProtocolHandlerPlugin
 from ..exception import HttpProtocolException, ProxyConnectionFailed
-from ..parser import HttpParser, httpParserStates, httpParserTypes, httpStatusCodes, httpMethods
+from ..parser import HttpParser, httpParserStates, httpParserTypes
 
 from ...common.types import Readables, Writables
 from ...common.constants import DEFAULT_CA_CERT_DIR, DEFAULT_CA_CERT_FILE, DEFAULT_CA_FILE

proxy/http/server/pac_plugin.py

@@ -9,12 +9,15 @@
     :license: BSD, see LICENSE for more details.
 """
 import gzip
+
 from typing import List, Tuple, Optional, Any
 
 from .plugin import HttpWebServerBasePlugin
 from .protocols import httpProtocolTypes
+
 from ..websocket import WebsocketFrame
 from ..parser import HttpParser
+
 from ...common.utils import bytes_, text_, build_http_response
 from ...common.flag import flags
 from ...common.constants import DEFAULT_PAC_FILE, DEFAULT_PAC_FILE_URL_PATH

proxy/http/server/plugin.py

@@ -11,9 +11,9 @@
 import socket
 import argparse
 
+from uuid import UUID
 from abc import ABC, abstractmethod
 from typing import Any, Dict, List, Optional, Tuple
-from uuid import UUID
 
 from ..websocket import WebsocketFrame
 from ..parser import HttpParser

proxy/http/server/protocols.py

@@ -17,4 +17,5 @@
         ('WEBSOCKET', int),
     ],
 )
+
 httpProtocolTypes = HttpProtocolTypes(1, 2, 3)