mirror of
https://github.com/jlu5/PyLink.git
synced 2024-12-24 11:42:51 +01:00
177 lines
5.9 KiB
Python
177 lines
5.9 KiB
Python
"""
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exec.py: Provides commands for executing raw code and debugging PyLink.
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"""
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import pprint
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import threading
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from pylinkirc import *
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from pylinkirc.log import log
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from pylinkirc.coremods import permissions
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# These imports are not strictly necessary, but make the following modules
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# easier to access through eval and exec.
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import re
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import time
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import pylinkirc
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import importlib
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exec_locals_dict = {}
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PPRINT_MAX_LINES = 20
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PPRINT_WIDTH = 200
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def _exec(irc, source, args, locals_dict=None):
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"""<code>
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Admin-only. Executes <code> in the current PyLink instance. This command performs backslash escaping of characters, so things like \\n and \\ will work.
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\x02**WARNING: THIS CAN BE DANGEROUS IF USED IMPROPERLY!**\x02"""
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permissions.check_permissions(irc, source, ['exec.exec'])
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# Allow using \n in the code, while escaping backslashes correctly otherwise.
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args = bytes(' '.join(args), 'utf-8').decode("unicode_escape")
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if not args.strip():
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irc.reply('No code entered!')
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return
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log.info('(%s) Executing %r for %s', irc.name, args,
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irc.get_hostmask(source))
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if locals_dict is None:
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locals_dict = locals()
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else:
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# Add irc, source, and args to the given locals_dict, to allow basic things like irc.reply()
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# to still work.
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locals_dict['irc'] = irc
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locals_dict['source'] = source
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locals_dict['args'] = args
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exec(args, globals(), locals_dict)
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irc.reply("Done.")
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utils.add_cmd(_exec, 'exec')
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@utils.add_cmd
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def iexec(irc, source, args):
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"""<code>
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Admin-only. Executes <code> in the current PyLink instance with a persistent, isolated
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locals scope (world.plugins['exec'].exec_local_dict).
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Note: irc, source, and args are added into this locals dict to allow things like irc.reply()
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to still work.
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\x02**WARNING: THIS CAN BE DANGEROUS IF USED IMPROPERLY!**\x02
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"""
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_exec(irc, source, args, locals_dict=exec_locals_dict)
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def _eval(irc, source, args, locals_dict=None, pretty_print=False):
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"""<Python expression>
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Admin-only. Evaluates the given Python expression and returns the result.
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\x02**WARNING: THIS CAN BE DANGEROUS IF USED IMPROPERLY!**\x02"""
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permissions.check_permissions(irc, source, ['exec.eval'])
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args = ' '.join(args)
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if not args.strip():
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irc.reply('No code entered!')
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return
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if locals_dict is None:
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locals_dict = locals()
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else:
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# Add irc, source, and args to the given locals_dict, to allow basic things like irc.reply()
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# to still work.
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locals_dict['irc'] = irc
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locals_dict['source'] = source
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locals_dict['args'] = args
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log.info('(%s) Evaluating %r for %s', irc.name, args,
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irc.get_hostmask(source))
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result = eval(args, globals(), locals_dict)
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if pretty_print:
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lines = pprint.pformat(result, width=PPRINT_WIDTH, compact=True).splitlines()
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for line in lines[:PPRINT_MAX_LINES]:
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irc.reply(line)
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if len(lines) > PPRINT_MAX_LINES:
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irc.reply('Suppressing %s more line(s) of output.' % (len(lines) - PPRINT_MAX_LINES))
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else:
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# Purposely disable text wrapping so results are cut instead of potentially flooding;
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# 'peval' is specifically designed to work around that.
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irc.reply(repr(result), wrap=False)
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utils.add_cmd(_eval, 'eval')
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@utils.add_cmd
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def peval(irc, source, args):
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"""<Python expression>
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Admin-only. This command is the same as 'eval', except that results are pretty formatted.
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\x02**WARNING: THIS CAN BE DANGEROUS IF USED IMPROPERLY!**\x02
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"""
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_eval(irc, source, args, pretty_print=True)
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@utils.add_cmd
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def ieval(irc, source, args):
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"""<Python expression>
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Admin-only. Evaluates the given Python expression using a persistent, isolated
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locals scope (world.plugins['exec'].exec_local_dict).
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Note: irc, source, and args are added into this locals dict to allow things like irc.reply()
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to still work.
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\x02**WARNING: THIS CAN BE DANGEROUS IF USED IMPROPERLY!**\x02
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"""
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_eval(irc, source, args, locals_dict=exec_locals_dict)
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@utils.add_cmd
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def pieval(irc, source, args):
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"""<Python expression>
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Admin-only. This command is the same as 'ieval', except that results are pretty formatted.
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\x02**WARNING: THIS CAN BE DANGEROUS IF USED IMPROPERLY!**\x02
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"""
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_eval(irc, source, args, locals_dict=exec_locals_dict, pretty_print=True)
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@utils.add_cmd
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def inject(irc, source, args):
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"""<text>
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Admin-only. Injects raw text into the running PyLink protocol module, replying with the hook data returned.
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\x02**WARNING: THIS CAN BREAK YOUR NETWORK IF USED IMPROPERLY!**\x02"""
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permissions.check_permissions(irc, source, ['exec.inject'])
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args = ' '.join(args)
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if not args.strip():
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irc.reply('No text entered!')
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return
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log.info('(%s) Injecting raw text %r into protocol module for %s', irc.name,
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args, irc.get_hostmask(source))
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irc.reply(repr(irc.parse_irc_command(args)))
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@utils.add_cmd
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def threadinfo(irc, source, args):
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"""takes no arguments.
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Lists all threads currently present in this PyLink instance."""
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permissions.check_permissions(irc, source, ['exec.threadinfo'])
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for t in sorted(threading.enumerate(), key=lambda t: t.name.lower()):
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name = t.name
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# Unnamed threads are something we want to avoid throughout PyLink.
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if name.startswith('Thread-'):
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name = '\x0305%s\x03' % t.name
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# Also VERY bad: remaining threads for networks not in the networks index anymore!
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elif name.startswith(('Listener for', 'Ping timer loop for', 'Queue thread for')) and name.rsplit(" ", 1)[-1] not in world.networkobjects:
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name = '\x0304%s\x03' % t.name
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irc.reply('\x02%s\x02[%s]: daemon=%s; alive=%s' % (name, t.ident, t.daemon, t.is_alive()), private=True)
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irc.reply("Total of %s threads." % threading.active_count())
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