140 lines
4.2 KiB
Python
140 lines
4.2 KiB
Python
# Nemubot is a smart and modulable IM bot.
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# Copyright (C) 2012-2015 Mercier Pierre-Olivier
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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__version__ = '4.0.dev3'
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__author__ = 'nemunaire'
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from typing import Optional
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from nemubot.modulecontext import ModuleContext
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context = ModuleContext(None, None)
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def requires_version(min: Optional[int] = None,
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max: Optional[int] = None) -> None:
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"""Raise ImportError if the current version is not in the given range
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Keyword arguments:
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min -- minimal compatible version
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max -- last compatible version
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"""
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from distutils.version import LooseVersion
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if min is not None and LooseVersion(__version__) < LooseVersion(str(min)):
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raise ImportError("Requires version above %s, "
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"but this is nemubot v%s." % (str(min), __version__))
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if max is not None and LooseVersion(__version__) > LooseVersion(str(max)):
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raise ImportError("Requires version under %s, "
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"but this is nemubot v%s." % (str(max), __version__))
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def attach(pid: int, socketfile: str) -> int:
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import socket
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import sys
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print("nemubot is already launched with PID %d. Attaching to Unix socket at: %s" % (pid, socketfile))
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sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
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try:
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sock.connect(socketfile)
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except socket.error as e:
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sys.stderr.write(str(e))
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sys.stderr.write("\n")
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return 1
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from select import select
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try:
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print("Connection established.")
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while True:
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rl, wl, xl = select([sys.stdin, sock], [], [])
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if sys.stdin in rl:
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line = sys.stdin.readline().strip()
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if line == "exit" or line == "quit":
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return 0
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elif line == "reload":
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import os, signal
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os.kill(pid, signal.SIGHUP)
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print("Reload signal sent. Please wait...")
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elif line == "shutdown":
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import os, signal
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os.kill(pid, signal.SIGTERM)
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print("Shutdown signal sent. Please wait...")
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elif line == "kill":
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import os, signal
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os.kill(pid, signal.SIGKILL)
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print("Signal sent...")
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return 0
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elif line == "stack" or line == "stacks":
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import os, signal
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os.kill(pid, signal.SIGUSR1)
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print("Debug signal sent. Consult logs.")
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else:
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sock.send(line.encode() + b'\r\n')
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if sock in rl:
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sys.stdout.write(sock.recv(2048).decode())
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except KeyboardInterrupt:
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pass
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except:
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return 1
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finally:
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sock.close()
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return 0
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def daemonize() -> None:
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"""Detach the running process to run as a daemon
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"""
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import os
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import sys
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try:
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pid = os.fork()
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if pid > 0:
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sys.exit(0)
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except OSError as err:
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sys.stderr.write("Unable to fork: %s\n" % err)
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sys.exit(1)
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os.setsid()
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os.umask(0)
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os.chdir('/')
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try:
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pid = os.fork()
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if pid > 0:
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sys.exit(0)
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except OSError as err:
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sys.stderr.write("Unable to fork: %s\n" % err)
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sys.exit(1)
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sys.stdout.flush()
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sys.stderr.flush()
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si = open(os.devnull, 'r')
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so = open(os.devnull, 'a+')
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se = open(os.devnull, 'a+')
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os.dup2(si.fileno(), sys.stdin.fileno())
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os.dup2(so.fileno(), sys.stdout.fileno())
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os.dup2(se.fileno(), sys.stderr.fileno())
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