FTP可以连接成功
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170
test/ftp_test.py
Normal file
170
test/ftp_test.py
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#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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"""
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FTP Server 测试脚本 — 连接 STM32F4 上的 lftpd 服务器
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用法：python ftp_test.py [--host 192.168.1.100] [--port 21]
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"""
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import socket
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import sys
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import time
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import argparse
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HOST = "192.168.1.100"
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PORT = 21
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TIMEOUT = 10.0
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def recv_line(sock):
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"""读取 FTP 响应行（以 \r\n 结尾）"""
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data = b""
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sock.settimeout(TIMEOUT)
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while True:
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try:
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ch = sock.recv(1)
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except socket.timeout:
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print(f"[TIMEOUT] after receiving: {data!r}")
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return None
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if not ch:
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return data if data else None
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data += ch
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if data.endswith(b"\r\n"):
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return data
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def send_cmd(sock, cmd):
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"""发送 FTP 命令并读取响应"""
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print(f">>> {cmd}")
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sock.sendall((cmd + "\r\n").encode())
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time.sleep(0.1)
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response = recv_line(sock)
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if response:
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print(f"<<< {response.decode(errors='replace').rstrip()}")
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else:
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print(f"<<< [NO RESPONSE / CONNECTION CLOSED]")
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return response
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def parse_pasv(response):
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"""解析 PASV 227 响应，返回 (ip, port)"""
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import re
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m = re.search(r"(\d+),(\d+),(\d+),(\d+),(\d+),(\d+)", response.decode())
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if m:
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a, b, c, d, e, f = [int(x) for x in m.groups()]
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ip = f"{a}.{b}.{c}.{d}"
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port = e * 256 + f
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return ip, port
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return None, None
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def test_ftp(host, port):
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print(f"=== FTP Test: {host}:{port} ===\n")
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# 1. Connect
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print("[1] Connecting to control channel...")
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sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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sock.settimeout(TIMEOUT)
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try:
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sock.connect((host, port))
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print(f" Connected to {host}:{port}")
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except Exception as e:
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print(f" CONNECT FAILED: {e}")
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return False
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# 2. Read welcome
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print("\n[2] Reading welcome banner...")
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resp = recv_line(sock)
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if resp:
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print(f" {resp.decode(errors='replace').rstrip()}")
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else:
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print(" NO WELCOME BANNER")
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sock.close()
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return False
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# 3. Login
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print("\n[3] Login...")
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resp = send_cmd(sock, "USER anonymous")
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if not resp:
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sock.close()
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return False
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resp = send_cmd(sock, "PASS test@test.com")
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if not resp:
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sock.close()
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return False
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# 4. PWD
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print("\n[4] PWD...")
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resp = send_cmd(sock, "PWD")
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# 5. PASV mode
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print("\n[5] PASV...")
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resp = send_cmd(sock, "PASV")
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if not resp:
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sock.close()
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return False
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pasv_ip, pasv_port = parse_pasv(resp)
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if pasv_port is None:
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print(" FAILED to parse PASV response")
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# Try EPSV
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print("\n[5b] Trying EPSV...")
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resp = send_cmd(sock, "EPSV")
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if resp and b"229" in resp:
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import re
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m = re.search(r"\(\|\|\|(\d+)\|\)", resp.decode())
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if m:
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pasv_port = int(m.group(1))
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pasv_ip = host
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print(f" EPSV: {pasv_ip}:{pasv_port}")
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if pasv_port is None:
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print(" PASV/EPSV FAILED, trying PORT mode...")
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# Skip data connection tests
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else:
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print(f" Data channel: {pasv_ip}:{pasv_port}")
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# 6. LIST (correct PASV flow: connect data first, then send LIST)
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print("\n[6] LIST...")
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data_sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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data_sock.settimeout(5.0)
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try:
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data_sock.connect((pasv_ip, pasv_port))
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print(f" Data connected to {pasv_ip}:{pasv_port}")
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send_cmd(sock, "LIST")
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data = b""
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while True:
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try:
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chunk = data_sock.recv(1024)
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if not chunk:
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break
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data += chunk
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except socket.timeout:
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break
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print(f" LIST result ({len(data)} bytes):")
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print(data.decode(errors='replace'))
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data_sock.close()
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except Exception as e:
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print(f" LIST FAILED: {e}")
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data_sock.close()
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# Read LIST response
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resp = recv_line(sock)
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if resp:
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print(f" LIST response: {resp.decode(errors='replace').rstrip()}")
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# 7. QUIT
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print("\n[7] QUIT...")
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send_cmd(sock, "QUIT")
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sock.close()
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print("\n=== Test Complete ===")
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return True
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def main():
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parser = argparse.ArgumentParser(description="FTP Server Test")
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parser.add_argument("--host", default=HOST, help=f"FTP server IP (default: {HOST})")
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parser.add_argument("--port", type=int, default=PORT, help=f"FTP server port (default: {PORT})")
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args = parser.parse_args()
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success = test_ftp(args.host, args.port)
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sys.exit(0 if success else 1)
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if __name__ == "__main__":
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main()
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