nojhan/tunnelmon
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feat: show port forwarding types

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Johann Dreo 2022-08-09 09:31:47 +02:00
commit 346cd17527
1 changed files with 44 additions and 20 deletions
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64
tunnelmon.py
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@ -38,7 +38,7 @@ import itertools
class Tunnel: class Tunnel:
def __init__(self, ssh_pid=None, in_port=None, via_host=None, target_host=None, out_port=None): def __init__(self, ssh_pid=None, in_port=None, via_host=None, target_host=None, out_port=None, forward=None):
# assert ssh_pid is not None # assert ssh_pid is not None
self.ssh_pid = ssh_pid self.ssh_pid = ssh_pid
assert in_port is not None assert in_port is not None
@ -49,11 +49,18 @@ class Tunnel:
self.target_host = target_host self.target_host = target_host
assert out_port is not None assert out_port is not None
self.out_port = out_port self.out_port = out_port
assert forward is not None
self.forwards = {'L':'local', 'R':'remote', 'D': 'dynamic'}
if forward in self.forwards:
self.forward = self.forwards[forward]
else:
self.forward = "unknown"
self.connections = [] self.connections = []
def repr_tunnel(self): def repr_tunnel(self):
return "%i\t%i\t%s\t%s\t%i" % ( return "%s\t%i\t%i\t%s\t%s\t%i" % (
self.forward,
self.ssh_pid, self.ssh_pid,
self.in_port, self.in_port,
self.via_host, self.via_host,
@ -146,9 +153,9 @@ class TunnelsParser:
# only a list of connections OR autossh processes # only a list of connections OR autossh processes
# self.update() # self.update()
self.re_forwarding = re.compile(r"-\w*[LRD]\w*\s*(\d+):(.*):(\d+)") self.re_forwarding = re.compile(r"-\w*([LRD])\w*\s*(\d+):(.*):(\d+)")
self.header = 'TYPE\tSSH_PID\tIN_PORT\tVIA_HOST\tTARGET_HOST\tOUT_PORT' self.header = 'TYPE\tFORWARD\tSSH_PID\tIN_PORT\tVIA_HOST\tTARGET_HOST\tOUT_PORT'
def get_tunnel(self, pos): def get_tunnel(self, pos):
pid = list(self.tunnels.keys())[pos] pid = list(self.tunnels.keys())[pos]
@ -163,7 +170,7 @@ class TunnelsParser:
logging.debug(match) logging.debug(match)
if match: if match:
assert len(match) == 1 assert len(match) == 1
in_port, target_host, out_port = match[0] forward, in_port, target_host, out_port = match[0]
logging.debug("matches: %s", match) logging.debug("matches: %s", match)
else: else:
raise ValueError("is not a ssh tunnel") raise ValueError("is not a ssh tunnel")
@ -188,7 +195,7 @@ class TunnelsParser:
via_host = cmd[i] via_host = cmd[i]
break break
return int(in_port), via_host, target_host, int(out_port) return int(in_port), via_host, target_host, int(out_port), forward
def update(self): def update(self):
"""Gather and parse informations from the operating system""" """Gather and parse informations from the operating system"""
@ -206,21 +213,21 @@ class TunnelsParser:
if process['name'] == 'ssh': if process['name'] == 'ssh':
logging.debug(process) logging.debug(process)
try: try:
in_port, via_host, target_host, out_port = self.parse(cmd) in_port, via_host, target_host, out_port, forward = self.parse(cmd)
except ValueError: except ValueError:
continue continue
logging.debug("%s %s %s %s", in_port, via_host, target_host, out_port) logging.debug("%s %s %s %s %s", in_port, via_host, target_host, out_port, forward)
# Check if this ssh tunnel is managed by autossh. # Check if this ssh tunnel is managed by autossh.
parent = psutil.Process(process['ppid']) parent = psutil.Process(process['ppid'])
if parent.name() == 'autossh': if parent.name() == 'autossh':
# Add an autossh tunnel. # Add an autossh tunnel.
pid = parent.pid # autossh pid pid = parent.pid # autossh pid
self.tunnels[pid] = AutoTunnel(pid, process['pid'], in_port, via_host, target_host, out_port) self.tunnels[pid] = AutoTunnel(pid, process['pid'], in_port, via_host, target_host, out_port, forward)
else: else:
# Add a raw tunnel. # Add a raw tunnel.
pid = process['pid'] pid = process['pid']
self.tunnels[pid] = RawTunnel(pid, in_port, via_host, target_host, out_port) self.tunnels[pid] = RawTunnel(pid, in_port, via_host, target_host, out_port, forward)
for c in process['connections']: for c in process['connections']:
logging.debug(c) logging.debug(c)
@ -272,14 +279,32 @@ class CursesMonitor:
# colors # colors
# FIXME different colors for different types of tunnels (auto or raw) # FIXME different colors for different types of tunnels (auto or raw)
# 0: Black,
# 1: Blue,
# 2: Green,
# 3: Cyan,
# 4: Red,
# 5: Magenta,
# 6: Brown,
# 7: White ("Light Gray"),
# 8: Bright Black ("Gray"),
# 9: Bright Blue,
# 10: Bright Green,
# 11: Bright Cyan,
# 12: Bright Red,
# 13: Bright Magenta,
# 14: Yellow,
# 15: Bright White
self.colors_tunnel = {'kind_auto': 4, 'kind_raw': 5, 'ssh_pid': 0, 'in_port': 3, self.colors_tunnel = {'kind_auto': 4, 'kind_raw': 5, 'ssh_pid': 0, 'in_port': 3,
'via_host': 2, 'target_host': 2, 'out_port': 3, 'tunnels_nb': 4, 'tunnels_nb_none': 1} 'via_host': 2, 'target_host': 2, 'out_port': 3, 'tunnels_nb': 4, 'tunnels_nb_none': 1,
'forward': 6}
self.colors_highlight = {'kind_auto': 9, 'kind_raw': 9, 'ssh_pid': 9, 'in_port': 9, self.colors_highlight = {'kind_auto': 9, 'kind_raw': 9, 'ssh_pid': 9, 'in_port': 9,
'via_host': 9, 'target_host': 9, 'out_port': 9, 'tunnels_nb': 9, 'tunnels_nb_none': 9} 'via_host': 9, 'target_host': 9, 'out_port': 9, 'tunnels_nb': 9, 'tunnels_nb_none': 9,
'forward': 9}
self.colors_connection = {'ssh_pid': 0, 'autossh_pid': 0, 'status': 4, 'status_out': 1, self.colors_connection = {'ssh_pid': 0, 'autossh_pid': 0, 'status': 4, 'status_out': 1,
'local_address': 2, 'in_port': 3, 'foreign_address': 2, 'out_port': 3} 'local_address': 2, 'in_port': 3, 'foreign_address': 2, 'out_port': 3}
self.header = ("TYPE", "SSHPID", "INPORT", "VIA", "TARGET", "OUTPORT") self.header = ("TYPE", "FORWARD", "SSHPID", "INPORT", "VIA", "TARGET", "OUTPORT")
def do_Q(self): def do_Q(self):
"""Quit""" """Quit"""
@ -477,8 +502,6 @@ class CursesMonitor:
self.cur_pid = -1 self.cur_pid = -1
# header line # header line
# header_msg = "TYPE\tINPORT\tVIA \tTARGET \tOUTPORT"
# if os.geteuid() == 0:
header_msg = " ".join(self.format()).format(*self.header) header_msg = " ".join(self.format()).format(*self.header)
header_msg += " CONNECTIONS" header_msg += " CONNECTIONS"
self.scr.addstr(header_msg, curses.color_pair(color)) self.scr.addstr(header_msg, curses.color_pair(color))
@ -545,11 +568,12 @@ class CursesMonitor:
self.scr.addstr(' ', curses.color_pair(colors['kind_raw'])) self.scr.addstr(' ', curses.color_pair(colors['kind_raw']))
# self.add_tunnel_info('ssh_pid', line) # self.add_tunnel_info('ssh_pid', line)
self.add_tunnel_info('ssh_pid', line, 1) self.add_tunnel_info('forward' , line, 1)
self.add_tunnel_info('in_port', line, 2) self.add_tunnel_info('ssh_pid' , line, 2)
self.add_tunnel_info('via_host', line, 3) self.add_tunnel_info('in_port' , line, 3)
self.add_tunnel_info('target_host', line, 4) self.add_tunnel_info('via_host' , line, 4)
self.add_tunnel_info('out_port', line, 5) self.add_tunnel_info('target_host', line, 5)
self.add_tunnel_info('out_port' , line, 6)
nb = len(self.tp.get_tunnel(line).connections) nb = len(self.tp.get_tunnel(line).connections)
if nb > 0: if nb > 0: