This commit is contained in:
2025-01-31 12:06:42 +01:00
parent b06a10f6ec
commit 15de277a5b
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import asyncio
import asyncssh
import os
import logging
asyncssh.set_debug_level(2)
logging.basicConfig(level=logging.DEBUG)
# Configuration for SFTP server
SFTP_ROOT = "." # Directory to serve
USERNAME = "test"
PASSWORD = "woeii"
HOST = "localhost"
PORT = 2225
class MySFTPServer(asyncssh.SFTPServer):
def __init__(self, chan):
super().__init__(chan)
self.root = os.path.abspath(SFTP_ROOT)
async def stat(self, path):
"""Handles 'stat' command from SFTP client"""
full_path = os.path.join(self.root, path.lstrip("/"))
return await super().stat(full_path)
async def open(self, path, flags, attrs):
"""Handles file open requests"""
full_path = os.path.join(self.root, path.lstrip("/"))
return await super().open(full_path, flags, attrs)
async def listdir(self, path):
"""Handles directory listing"""
full_path = os.path.join(self.root, path.lstrip("/"))
return await super().listdir(full_path)
class MySSHServer(asyncssh.SSHServer):
"""Custom SSH server to handle authentication"""
def connection_made(self, conn):
print(f"New connection from {conn.get_extra_info('peername')}")
def connection_lost(self, exc):
print("Client disconnected")
def begin_auth(self, username):
return True # No additional authentication steps
def password_auth_supported(self):
return True # Support password authentication
def validate_password(self, username, password):
print(username,password)
return True
return username == USERNAME and password == PASSWORD
async def start_sftp_server():
os.makedirs(SFTP_ROOT, exist_ok=True) # Ensure the root directory exists
await asyncssh.create_server(
lambda: MySSHServer(),
host=HOST,
port=PORT,
server_host_keys=["ssh_host_key"],
process_factory=MySFTPServer
)
print(f"SFTP server running on {HOST}:{PORT}")
await asyncio.Future() # Keep running forever
if __name__ == "__main__":
try:
asyncio.run(start_sftp_server())
except (OSError, asyncssh.Error) as e:
print(f"Error starting SFTP server: {e}")
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import asyncio
import asyncssh
import os
# SSH Server Configuration
HOST = "0.0.0.0"
PORT = 2225
USERNAME = "user"
PASSWORD = "password"
SHELL = "/bin/sh" # Change to another shell if needed
class CustomSSHServer(asyncssh.SSHServer):
def connection_made(self, conn):
print(f"New connection from {conn.get_extra_info('peername')}")
def connection_lost(self, exc):
print("Client disconnected")
def password_auth_supported(self):
return True
def validate_password(self, username, password):
return username == USERNAME and password == PASSWORD
async def custom_bash_process(process):
"""Spawns a custom bash shell process"""
env = os.environ.copy()
env["TERM"] = "xterm-256color"
# Start the Bash shell
bash_proc = await asyncio.create_subprocess_exec(
SHELL, "-i", stdin=asyncio.subprocess.PIPE, stdout=asyncio.subprocess.PIPE, stderr=asyncio.subprocess.PIPE, env=env
)
async def read_output():
while True:
data = await bash_proc.stdout.read(1)
if not data:
break
process.stdout.write(data)
async def read_input():
while True:
data = await process.stdin.read(1)
if not data:
break
bash_proc.stdin.write(data)
await asyncio.gather(read_output(), read_input())
async def start_ssh_server():
"""Starts the AsyncSSH server with Bash"""
await asyncssh.create_server(
lambda: CustomSSHServer(),
host=HOST,
port=PORT,
server_host_keys=["ssh_host_key"],
process_factory=custom_bash_process
)
print(f"SSH server running on {HOST}:{PORT}")
await asyncio.Future() # Keep running
if __name__ == "__main__":
try:
asyncio.run(start_ssh_server())
except (OSError, asyncssh.Error) as e:
print(f"Error starting SSH server: {e}")
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#!/usr/bin/env python3.7
#
# Copyright (c) 2013-2024 by Ron Frederick <ronf@timeheart.net> and others.
#
# This program and the accompanying materials are made available under
# the terms of the Eclipse Public License v2.0 which accompanies this
# distribution and is available at:
#
# http://www.eclipse.org/legal/epl-2.0/
#
# This program may also be made available under the following secondary
# licenses when the conditions for such availability set forth in the
# Eclipse Public License v2.0 are satisfied:
#
# GNU General Public License, Version 2.0, or any later versions of
# that license
#
# SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-or-later
#
# Contributors:
# Ron Frederick - initial implementation, API, and documentation
# To run this program, the file ``ssh_host_key`` must exist with an SSH
# private key in it to use as a server host key. An SSH host certificate
# can optionally be provided in the file ``ssh_host_key-cert.pub``.
#
# The file ``ssh_user_ca`` must exist with a cert-authority entry of
# the certificate authority which can sign valid client certificates.
import asyncio, asyncssh, sys
async def handle_client(process: asyncssh.SSHServerProcess) -> None:
width, height, pixwidth, pixheight = process.term_size
process.stdout.write(f'Terminal type: {process.term_type}, '
f'size: {width}x{height}')
if pixwidth and pixheight:
process.stdout.write(f' ({pixwidth}x{pixheight} pixels)')
process.stdout.write('\nTry resizing your window!\n')
while not process.stdin.at_eof():
try:
await process.stdin.read()
except asyncssh.TerminalSizeChanged as exc:
process.stdout.write(f'New window size: {exc.width}x{exc.height}')
if exc.pixwidth and exc.pixheight:
process.stdout.write(f' ({exc.pixwidth}'
f'x{exc.pixheight} pixels)')
process.stdout.write('\n')
async def start_server() -> None:
await asyncssh.listen('', 2230, server_host_keys=['ssh_host_key'],
#authorized_client_keys='ssh_user_ca',
process_factory=handle_client)
loop = asyncio.new_event_loop()
try:
loop.run_until_complete(start_server())
except (OSError, asyncssh.Error) as exc:
sys.exit('Error starting server: ' + str(exc))
loop.run_forever()
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#!/usr/bin/env python3.7
#
# Copyright (c) 2013-2024 by Ron Frederick <ronf@timeheart.net> and others.
#
# This program and the accompanying materials are made available under
# the terms of the Eclipse Public License v2.0 which accompanies this
# distribution and is available at:
#
# http://www.eclipse.org/legal/epl-2.0/
#
# This program may also be made available under the following secondary
# licenses when the conditions for such availability set forth in the
# Eclipse Public License v2.0 are satisfied:
#
# GNU General Public License, Version 2.0, or any later versions of
# that license
#
# SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-or-later
#
# Contributors:
# Ron Frederick - initial implementation, API, and documentation
# To run this program, the file ``ssh_host_key`` must exist with an SSH
# private key in it to use as a server host key. An SSH host certificate
# can optionally be provided in the file ``ssh_host_key-cert.pub``.
import asyncio, asyncssh, bcrypt, sys
from typing import Optional
passwords = {'guest': b'', # guest account with no password
'user': bcrypt.hashpw(b'user', bcrypt.gensalt()),
}
def handle_client(process: asyncssh.SSHServerProcess) -> None:
username = process.get_extra_info('username')
process.stdout.write(f'Welcome to my SSH server, {username}!\n')
#process.exit(0)
class MySSHServer(asyncssh.SSHServer):
def connection_made(self, conn: asyncssh.SSHServerConnection) -> None:
peername = conn.get_extra_info('peername')[0]
print(f'SSH connection received from {peername}.')
def connection_lost(self, exc: Optional[Exception]) -> None:
if exc:
print('SSH connection error: ' + str(exc), file=sys.stderr)
else:
print('SSH connection closed.')
def begin_auth(self, username: str) -> bool:
# If the user's password is the empty string, no auth is required
return passwords.get(username) != b''
def password_auth_supported(self) -> bool:
return True
def validate_password(self, username: str, password: str) -> bool:
if username not in passwords:
return False
pw = passwords[username]
if not password and not pw:
return True
return bcrypt.checkpw(password.encode('utf-8'), pw)
async def start_server() -> None:
await asyncssh.create_server(MySSHServer, '', 2231,
server_host_keys=['ssh_host_key'],
process_factory=handle_client)
loop = asyncio.new_event_loop()
try:
loop.run_until_complete(start_server())
except (OSError, asyncssh.Error) as exc:
sys.exit('Error starting server: ' + str(exc))
loop.run_forever()
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#!/usr/bin/env python3.7
#
# Copyright (c) 2016-2024 by Ron Frederick <ronf@timeheart.net> and others.
#
# This program and the accompanying materials are made available under
# the terms of the Eclipse Public License v2.0 which accompanies this
# distribution and is available at:
#
# http://www.eclipse.org/legal/epl-2.0/
#
# This program may also be made available under the following secondary
# licenses when the conditions for such availability set forth in the
# Eclipse Public License v2.0 are satisfied:
#
# GNU General Public License, Version 2.0, or any later versions of
# that license
#
# SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-or-later
#
# Contributors:
# Ron Frederick - initial implementation, API, and documentation
# To run this program, the file ``ssh_host_key`` must exist with an SSH
# private key in it to use as a server host key. An SSH host certificate
# can optionally be provided in the file ``ssh_host_key-cert.pub``.
#
# The file ``ssh_user_ca`` must exist with a cert-authority entry of
# the certificate authority which can sign valid client certificates.
import asyncio, asyncssh, sys
from typing import List, cast
class ChatClient:
_clients: List['ChatClient'] = []
def __init__(self, process: asyncssh.SSHServerProcess):
self._process = process
@classmethod
async def handle_client(cls, process: asyncssh.SSHServerProcess):
await cls(process).run()
async def readline(self) -> str:
return cast(str, self._process.stdin.readline())
def write(self, msg: str) -> None:
self._process.stdout.write(msg)
def broadcast(self, msg: str) -> None:
for client in self._clients:
if client != self:
client.write(msg)
def begin_auth(self, username: str) -> bool:
# If the user's password is the empty string, no auth is required
#return False
return True # passwords.get(username) != b''
def password_auth_supported(self) -> bool:
return True
def validate_password(self, username: str, password: str) -> bool:
#if username not in passwords:
# return False
#pw = passwords[username]
#if not password and not pw:
# return True
return True
#return bcrypt.checkpw(password.encode('utf-8'), pw)
async def run(self) -> None:
self.write('Welcome to chat!\n\n')
self.write('Enter your name: ')
name = (await self.readline()).rstrip('\n')
self.write(f'\n{len(self._clients)} other users are connected.\n\n')
self._clients.append(self)
self.broadcast(f'*** {name} has entered chat ***\n')
try:
async for line in self._process.stdin:
self.broadcast(f'{name}: {line}')
except asyncssh.BreakReceived:
pass
self.broadcast(f'*** {name} has left chat ***\n')
self._clients.remove(self)
async def start_server() -> None:
await asyncssh.listen('', 2235, server_host_keys=['ssh_host_key'],
process_factory=ChatClient.handle_client)
loop = asyncio.new_event_loop()
try:
loop.run_until_complete(start_server())
except (OSError, asyncssh.Error) as exc:
sys.exit('Error starting server: ' + str(exc))
loop.run_forever()