init commit of 24.0.1 custom signet image

miner_imports/test_framework/socks5.py

@@ -0,0 +1,160 @@
+#!/usr/bin/env python3
+# Copyright (c) 2015-2019 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+"""Dummy Socks5 server for testing."""
+
+import socket
+import threading
+import queue
+import logging
+
+logger = logging.getLogger("TestFramework.socks5")
+
+# Protocol constants
+class Command:
+    CONNECT = 0x01
+
+class AddressType:
+    IPV4 = 0x01
+    DOMAINNAME = 0x03
+    IPV6 = 0x04
+
+# Utility functions
+def recvall(s, n):
+    """Receive n bytes from a socket, or fail."""
+    rv = bytearray()
+    while n > 0:
+        d = s.recv(n)
+        if not d:
+            raise IOError('Unexpected end of stream')
+        rv.extend(d)
+        n -= len(d)
+    return rv
+
+# Implementation classes
+class Socks5Configuration():
+    """Proxy configuration."""
+    def __init__(self):
+        self.addr = None # Bind address (must be set)
+        self.af = socket.AF_INET # Bind address family
+        self.unauth = False  # Support unauthenticated
+        self.auth = False  # Support authentication
+
+class Socks5Command():
+    """Information about an incoming socks5 command."""
+    def __init__(self, cmd, atyp, addr, port, username, password):
+        self.cmd = cmd # Command (one of Command.*)
+        self.atyp = atyp # Address type (one of AddressType.*)
+        self.addr = addr # Address
+        self.port = port # Port to connect to
+        self.username = username
+        self.password = password
+    def __repr__(self):
+        return 'Socks5Command(%s,%s,%s,%s,%s,%s)' % (self.cmd, self.atyp, self.addr, self.port, self.username, self.password)
+
+class Socks5Connection():
+    def __init__(self, serv, conn):
+        self.serv = serv
+        self.conn = conn
+
+    def handle(self):
+        """Handle socks5 request according to RFC192."""
+        try:
+            # Verify socks version
+            ver = recvall(self.conn, 1)[0]
+            if ver != 0x05:
+                raise IOError('Invalid socks version %i' % ver)
+            # Choose authentication method
+            nmethods = recvall(self.conn, 1)[0]
+            methods = bytearray(recvall(self.conn, nmethods))
+            method = None
+            if 0x02 in methods and self.serv.conf.auth:
+                method = 0x02 # username/password
+            elif 0x00 in methods and self.serv.conf.unauth:
+                method = 0x00 # unauthenticated
+            if method is None:
+                raise IOError('No supported authentication method was offered')
+            # Send response
+            self.conn.sendall(bytearray([0x05, method]))
+            # Read authentication (optional)
+            username = None
+            password = None
+            if method == 0x02:
+                ver = recvall(self.conn, 1)[0]
+                if ver != 0x01:
+                    raise IOError('Invalid auth packet version %i' % ver)
+                ulen = recvall(self.conn, 1)[0]
+                username = str(recvall(self.conn, ulen))
+                plen = recvall(self.conn, 1)[0]
+                password = str(recvall(self.conn, plen))
+                # Send authentication response
+                self.conn.sendall(bytearray([0x01, 0x00]))
+
+            # Read connect request
+            ver, cmd, _, atyp = recvall(self.conn, 4)
+            if ver != 0x05:
+                raise IOError('Invalid socks version %i in connect request' % ver)
+            if cmd != Command.CONNECT:
+                raise IOError('Unhandled command %i in connect request' % cmd)
+
+            if atyp == AddressType.IPV4:
+                addr = recvall(self.conn, 4)
+            elif atyp == AddressType.DOMAINNAME:
+                n = recvall(self.conn, 1)[0]
+                addr = recvall(self.conn, n)
+            elif atyp == AddressType.IPV6:
+                addr = recvall(self.conn, 16)
+            else:
+                raise IOError('Unknown address type %i' % atyp)
+            port_hi,port_lo = recvall(self.conn, 2)
+            port = (port_hi << 8) | port_lo
+
+            # Send dummy response
+            self.conn.sendall(bytearray([0x05, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]))
+
+            cmdin = Socks5Command(cmd, atyp, addr, port, username, password)
+            self.serv.queue.put(cmdin)
+            logger.info('Proxy: %s', cmdin)
+            # Fall through to disconnect
+        except Exception as e:
+            logger.exception("socks5 request handling failed.")
+            self.serv.queue.put(e)
+        finally:
+            self.conn.close()
+
+class Socks5Server():
+    def __init__(self, conf):
+        self.conf = conf
+        self.s = socket.socket(conf.af)
+        self.s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+        self.s.bind(conf.addr)
+        self.s.listen(5)
+        self.running = False
+        self.thread = None
+        self.queue = queue.Queue() # report connections and exceptions to client
+
+    def run(self):
+        while self.running:
+            (sockconn, _) = self.s.accept()
+            if self.running:
+                conn = Socks5Connection(self, sockconn)
+                thread = threading.Thread(None, conn.handle)
+                thread.daemon = True
+                thread.start()
+
+    def start(self):
+        assert not self.running
+        self.running = True
+        self.thread = threading.Thread(None, self.run)
+        self.thread.daemon = True
+        self.thread.start()
+
+    def stop(self):
+        self.running = False
+        # connect to self to end run loop
+        s = socket.socket(self.conf.af)
+        s.connect(self.conf.addr)
+        s.close()
+        self.thread.join()
+