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#!/usr/bin/env python3
"""
wsdump.py
websocket - WebSocket client library for Python
Copyright 2024 engn33r
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
"""
import argparse
import code
import gzip
import ssl
import sys
import threading
import time
import zlib
from urllib.parse import urlparse
import websocket
try:
import readline
except ImportError:
pass
def get_encoding() -> str:
encoding = getattr(sys.stdin, "encoding", "")
if not encoding:
return "utf-8"
else:
return encoding.lower()
OPCODE_DATA = (websocket.ABNF.OPCODE_TEXT, websocket.ABNF.OPCODE_BINARY)
ENCODING = get_encoding()
class VAction(argparse.Action):
def __call__(
self,
parser: argparse.Namespace,
args: tuple,
values: str,
option_string: str = None,
) -> None:
if values is None:
values = "1"
try:
values = int(values)
except ValueError:
values = values.count("v") + 1
setattr(args, self.dest, values)
def parse_args() -> argparse.Namespace:
parser = argparse.ArgumentParser(description="WebSocket Simple Dump Tool")
parser.add_argument(
"url", metavar="ws_url", help="websocket url. ex. ws://echo.websocket.events/"
)
parser.add_argument("-p", "--proxy", help="proxy url. ex. http://127.0.0.1:8080")
parser.add_argument(
"-v",
"--verbose",
default=0,
nargs="?",
action=VAction,
dest="verbose",
help="set verbose mode. If set to 1, show opcode. "
"If set to 2, enable to trace websocket module",
)
parser.add_argument(
"-n", "--nocert", action="store_true", help="Ignore invalid SSL cert"
)
parser.add_argument("-r", "--raw", action="store_true", help="raw output")
parser.add_argument("-s", "--subprotocols", nargs="*", help="Set subprotocols")
parser.add_argument("-o", "--origin", help="Set origin")
parser.add_argument(
"--eof-wait",
default=0,
type=int,
help="wait time(second) after 'EOF' received.",
)
parser.add_argument("-t", "--text", help="Send initial text")
parser.add_argument(
"--timings", action="store_true", help="Print timings in seconds"
)
parser.add_argument("--headers", help="Set custom headers. Use ',' as separator")
return parser.parse_args()
class RawInput:
def raw_input(self, prompt: str = "") -> str:
line = input(prompt)
if ENCODING and ENCODING != "utf-8" and not isinstance(line, str):
line = line.decode(ENCODING).encode("utf-8")
elif isinstance(line, str):
line = line.encode("utf-8")
return line
class InteractiveConsole(RawInput, code.InteractiveConsole):
def write(self, data: str) -> None:
sys.stdout.write("\033[2K\033[E")
# sys.stdout.write("\n")
sys.stdout.write("\033[34m< " + data + "\033[39m")
sys.stdout.write("\n> ")
sys.stdout.flush()
def read(self) -> str:
return self.raw_input("> ")
class NonInteractive(RawInput):
def write(self, data: str) -> None:
sys.stdout.write(data)
sys.stdout.write("\n")
sys.stdout.flush()
def read(self) -> str:
return self.raw_input("")
def main() -> None:
start_time = time.time()
args = parse_args()
if args.verbose > 1:
websocket.enableTrace(True)
options = {}
if args.proxy:
p = urlparse(args.proxy)
options["http_proxy_host"] = p.hostname
options["http_proxy_port"] = p.port
if args.origin:
options["origin"] = args.origin
if args.subprotocols:
options["subprotocols"] = args.subprotocols
opts = {}
if args.nocert:
opts = {"cert_reqs": ssl.CERT_NONE, "check_hostname": False}
if args.headers:
options["header"] = list(map(str.strip, args.headers.split(",")))
ws = websocket.create_connection(args.url, sslopt=opts, **options)
if args.raw:
console = NonInteractive()
else:
console = InteractiveConsole()
print("Press Ctrl+C to quit")
def recv() -> tuple:
try:
frame = ws.recv_frame()
except websocket.WebSocketException:
return websocket.ABNF.OPCODE_CLOSE, ""
if not frame:
raise websocket.WebSocketException(f"Not a valid frame {frame}")
elif frame.opcode in OPCODE_DATA:
return frame.opcode, frame.data
elif frame.opcode == websocket.ABNF.OPCODE_CLOSE:
ws.send_close()
return frame.opcode, ""
elif frame.opcode == websocket.ABNF.OPCODE_PING:
ws.pong(frame.data)
return frame.opcode, frame.data
return frame.opcode, frame.data
def recv_ws() -> None:
while True:
opcode, data = recv()
msg = None
if opcode == websocket.ABNF.OPCODE_TEXT and isinstance(data, bytes):
data = str(data, "utf-8")
if (
isinstance(data, bytes) and len(data) > 2 and data[:2] == b"\037\213"
): # gzip magick
try:
data = "[gzip] " + str(gzip.decompress(data), "utf-8")
except:
pass
elif isinstance(data, bytes):
try:
data = "[zlib] " + str(
zlib.decompress(data, -zlib.MAX_WBITS), "utf-8"
)
except:
pass
if isinstance(data, bytes):
data = repr(data)
if args.verbose:
msg = f"{websocket.ABNF.OPCODE_MAP.get(opcode)}: {data}"
else:
msg = data
if msg is not None:
if args.timings:
console.write(f"{time.time() - start_time}: {msg}")
else:
console.write(msg)
if opcode == websocket.ABNF.OPCODE_CLOSE:
break
thread = threading.Thread(target=recv_ws)
thread.daemon = True
thread.start()
if args.text:
ws.send(args.text)
while True:
try:
message = console.read()
ws.send(message)
except KeyboardInterrupt:
return
except EOFError:
time.sleep(args.eof_wait)
return
if __name__ == "__main__":
try:
main()
except Exception as e:
print(e)
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