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utils.py
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utils.py
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from asyncio import tasks
from pprint import pprint
import shutil
import string
from task_queue import AsyncQueue
from tokenize import Whitespace, group
from typing import Dict
import nonebot
from nonebot import on_command, on_regex
from nonebot.adapters import Bot, Event
from nonebot.adapters.cqhttp.message import MessageSegment
from nonebot.matcher import Matcher
from nonebot.typing import T_State
import asyncio
from nonebot.log import logger
from random import choice, randint
import os
import re
import shlex
import hashlib
import grp
import pwd
from uid_gid import ensure_user, ensure_user_dir, execute_shell
from workspace import *
from enum import Enum, auto
from collections import defaultdict
import user_group_map
class WorkspaceMode(Enum):
serial = auto()
concurrent = auto()
plaintext = auto()
none = auto()
def start_end_alternative(first_start=True):
if first_start:
yield 0
i = 1
while True:
yield from [-i, i]
i += 1
def fill_in_generate():
return "\n" + choice(["いぉ","など"]) * randint(2,3) + "." * randint(3,6) + "\n"
def dame(err: str):
return f"""{choice(['だめ', 'ダメ', '駄目'])}{choice(['です', ''])}{"!" * randint(0,5)}
{err}
""".strip()
async def summary(s: str, limit=100, keep_first=False, fill_in_gen=fill_in_generate):
if len(s) > limit:
lines = s.splitlines(keepends=True)
if len(lines) <= 1:
words = [x + " " for x in s.split()]
if len(words) <= 1:
chinese_phrases = re.split("|".join(f"(?<={x})" for x in [",","。",";"]), s)
units = chinese_phrases
else:
units = words
else:
units = lines
starts = []
ends = []
collected_counts = 0
for i in start_end_alternative(keep_first):
current = starts if i >= 0 else ends
unit = units[i]
current.append(unit)
collected_counts += len(unit)
if collected_counts > limit:
break
ends.reverse()
return ("".join(starts) + fill_in_gen() + "".join(ends)).strip()
else:
return s
def script(script_path: Path):
full_path = CACHE / script_path.parts[-1]
shutil.copy(script_path, full_path)
os.system(f"chmod 755 {full_path}")
return f"{full_path}"
def set_ids(user_name, umask=None):
def _set_id():
user = pwd.getpwnam(user_name)
os.setgid(user.pw_gid)
os.setuid(user.pw_uid)
if umask is not None:
os.umask(umask)
return _set_id
async def execute(cmd, cwd=SHARED, user="commander", main_group="damebot", extra_group=tuple(), env_vars=None, umask=None, empty_hint=True):
if env_vars is None:
env_vars = {}
os.makedirs(cwd, exist_ok=True)
result = await ensure_user(user, main_group, extra_group)
splited = shlex.split(cmd)
logger.info(f"trying to execute {splited}")
proc = await asyncio.create_subprocess_exec(
*splited,
stdout=asyncio.subprocess.PIPE,
stderr=asyncio.subprocess.PIPE,
cwd=cwd,
preexec_fn=set_ids(user, umask),
env=env_vars,
)
logger.debug(f"'{cmd}' process created.")
stdout, stderr = await proc.communicate()
logger.debug(f"got stdout \nf{stdout}")
logger.debug(f"got stderr \nf{stderr}")
if proc.returncode == 0:
# also can use proc.returncode
output = stdout.decode()
if output.strip() == "":
output = stderr.decode().strip()
if empty_hint:
if output.strip() == "":
output = f"'{cmd}' できだ" + "!" * randint(1,3)
else:
err_short = await summary(stdout.decode().strip() + " " + stderr.decode().strip())
output = dame(err_short)
return output
async def multi_execute(cmd, user_typed_cmd, help_obj):
logger.debug("using execute help producer")
result = await execute(" ".join([cmd, user_typed_cmd, help_obj]))
return result
async def plain_string(cmd, user_typed_cmd, help_obj):
logger.debug("using plain_string help producer")
return help_obj
async def command_env_settings(bot: Bot, event: Event, state: T_State, matcher: Matcher, regex: str):
env_vars = os.environ.copy()
old_python_env = env_vars.get("PYTHONPATH", "")
if old_python_env.strip() == "":
old_python_env = []
else:
old_python_env = old_python_env.split(":")
env_vars["PYTHONPATH"] = ":".join(old_python_env + [str(PROJECT_ROOT)])
if event is not None:
env_vars["BOT_USER_ID"] = str(event.get_user_id())
env_vars["BOT_SESSION_ID"] = str(event.get_session_id())
if event.is_tome():
env_vars["TO_BOT"] = str(1)
env_vars["BOT_EVENT_TYPE"] = str(event.get_type())
msg = str(event.get_plaintext())
env_vars["BOT_EVENT_MESSAGE"] = msg
group_id = getattr(event, "group_id", None)
if group_id is not None:
env_vars["BOT_GROUP_ID"] = str(group_id)
if regex is not None:
match = re.match(regex, msg, flags=re.MULTILINE | re.DOTALL)
if match:
_, origin_command, command_text = match.groups()
env_vars["BOT_EVENT_COMMAND"] = origin_command
env_vars["BOT_EVENT_COMMAND_ARGS"] = command_text
return env_vars
def nop():
pass
class CommandBuilder:
def __init__(
self, cmd,
*cmd_in_dice,
run_as=None,
help_short="--version",
help_short_text=None,
help_long="--help",
help_long_text=None,
help_async_factory=None,
help_short_async_factory=None,
help_long_async_factory=None,
sub_commands=None,
per_group=False,
workespace_mode=WorkspaceMode.serial,
reply_notify=True,
priority=65536,
priority_delta=0,
help_priority=65536 // 2,
help_priority_delta=0,
init_fn=None,
hidden_result=False,
command_env_async_factory=command_env_settings,
complete_match=True,
**extra_kwargs):
if sub_commands is None:
sub_commands = []
if len(cmd_in_dice) == 0:
cmd_in_dice = [cmd]
if help_async_factory is None:
help_async_factory = multi_execute
if help_short_async_factory is None:
help_short_async_factory = help_async_factory if help_short_text is None else plain_string
if help_long_async_factory is None:
help_long_async_factory = help_async_factory if help_long_text is None else plain_string
if help_short_text is not None:
help_short = help_short_text
if help_long_text is not None:
help_long = help_long_text
if init_fn is None:
init_fn = nop
if cmd_in_dice[0] is not None:
command_safe = "".join((ch if ch.isalpha() or ch.isnum() else "_") for ch in cmd_in_dice[0])
else:
command_safe = "user"
if run_as is None:
run_as = command_safe
self.command_safe = command_safe
self.cmd = cmd
self.init_fn = init_fn
self.run_as = run_as
self.cmd_in_dice = cmd_in_dice
self.help_short = help_short
self.help_long = help_long
self.help_short_async_factory = help_short_async_factory
self.help_long_async_factory = help_long_async_factory
self.sub_commands = sub_commands
self.priority = priority + priority_delta
self.help_priority = help_priority + help_priority_delta
self.extra_kwargs = extra_kwargs
self.command_env_async_factory = command_env_async_factory
self.per_group = per_group
self.workspace_mode = workespace_mode
self.running_queues = defaultdict(AsyncQueue)
self.reply_notify = reply_notify
self.hidden_result = hidden_result
self.complete_match = complete_match
def build_help(self, *help_prefixes, priority_delta=0, recursive=True, **help_args):
logger.info(f"building help for '{self.cmd}' using '{self.help_short_async_factory.__name__}:{self.help_short}' and '{self.help_long_async_factory.__name__}:{self.help_long}'")
priority = self.help_priority + priority_delta
if len(help_prefixes) == 0:
help_prefixes = ["help"]
all_commands_combined = [help_name + ("" if self.cmd is None else f" {self_name}") for self_name in self.cmd_in_dice for help_name in help_prefixes]
main_command, *aliases = all_commands_combined
aliases = set(aliases)
sub_matchers = None
if recursive:
sub_matchers = [child_cmd.build_help(*help_prefixes, priority_delta=priority_delta-1, recursive=recursive, **help_args) for child_cmd in self.sub_commands]
config = nonebot.get_driver().config
command_start = config.command_start
regex = f"^({'|'.join(command_start)})({'|'.join(all_commands_combined)})(.*)$"
logger.info(f"building command help matcher with {regex}, prior={priority}, kwargs={help_args}")
matcher = on_regex(regex, flags=re.MULTILINE, block=True, priority=priority, **help_args)
@matcher.handle()
async def help(bot: Bot, event: Event, state: T_State, matcher: Matcher):
# get real command content
logger.debug(f"event: {event}")
logger.debug(f"state: {state}")
msg = event.get_message().extract_plain_text()
logger.debug(f"got message '{msg}'")
_, origin_command, command_text = re.match(regex, msg, flags=re.MULTILINE).groups()
logger.debug(f"got command text '{command_text}'")
extra_prompt = ""
if not command_text.startswith(" ") and command_text != "":
extra_prompt += f"treat '{origin_command + command_text}' as '{origin_command}'\n"
logger.warning(extra_prompt)
command_text = ""
else:
command_text = command_text.strip()
command_without_help = origin_command.split()[-1]
logger.debug(f"{command_without_help} => {self.cmd}")
logger.debug(f"planning to call with '{self.cmd}', '{command_text}', '{self.help_long}'")
help_long_text = await self.help_long_async_factory(self.cmd, command_text, self.help_long)
sub_commands_texts = await asyncio.gather(*[command.help_short_async_factory(command.cmd, command_text, command.help_short) for command in self.sub_commands])
newline = '\n'
output = \
f"""
{extra_prompt}{help_long_text.strip()}
sub-commands:
{newline.join(f'{k}[{u}]:{v.strip()}' for k,u,v in zip(
('|'.join(comm.cmd_in_dice) for comm in self.sub_commands),
(f'{comm.run_as}' for comm in self.sub_commands),
sub_commands_texts
)
).strip()}
""".strip()
await matcher.finish(output)
logger.info(f"builded help")
return (matcher, sub_matchers) if sub_matchers else matcher
async def cmd_run(self, bot: Bot, event: Event, state: T_State, matcher: Matcher, cmd_replaced=None, empty_hint=True, group_id=None):
regex=self.regex_
if cmd_replaced is None:
logger.debug(f"event: {event}")
logger.debug(f"state: {state}")
msg = event.get_message().extract_plain_text()
logger.debug(f"got message '{msg}'")
_, origin_command, command_text = re.match(regex, msg, flags=re.MULTILINE | re.DOTALL).groups()
if self.complete_match and command_text and command_text[0] not in string.whitespace:
return
command_text = command_text.strip()
else:
command_text = cmd_replaced
msg = None
logger.debug(f"got command text '{command_text}'")
if self.per_group:
if event is not None:
group_id = getattr(event, "group_id", user_group_map.get(event.get_user_id()))
if group_id is None:
return
cwd = GROUP/str(group_id) if self.per_group else SHARED
os.makedirs(cwd, exist_ok=True)
current_user = self.run_as if not self.per_group else f"{self.run_as}g{group_id}"
main_group = self.command_safe
extra_group = ["damebot"]
if self.workspace_mode != WorkspaceMode.none:
cwd = cwd / self.command_safe
cmd = " ".join([self.cmd, command_text])
env_futures = await asyncio.gather(self.command_env_async_factory(bot, event, state, matcher, regex), return_exceptions=True)
env_vars = env_futures[0]
if isinstance(env_vars, Exception):
logger.error(env_vars)
await matcher.send(dame(str(env_vars)))
raise env_vars
umask_int = None
if self.workspace_mode == WorkspaceMode.none or self.workspace_mode == WorkspaceMode.plaintext:
main_group, extra_group = extra_group[0], [main_group] + extra_group[1:]
if self.per_group:
extra_group.append(f"g{group_id}")
await ensure_user(current_user, main_group, extra_group)
if self.workspace_mode != WorkspaceMode.none:
ensure_user_dir(cwd, current_user, main_group)
if self.workspace_mode == WorkspaceMode.concurrent:
umask_int = 0o002
os.chmod(cwd, 0o775)
elif self.workspace_mode == WorkspaceMode.plaintext:
umask_int = 0o002
os.chmod(cwd, 0o775)
os.system(f"chgrp {extra_group[0]} {cwd}")
elif self.workspace_mode == WorkspaceMode.none:
umask_int = 0o002
os.chmod(cwd, 0o775)
task = execute(
cmd,
user=current_user,
main_group=main_group,
extra_group=extra_group,
umask=umask_int,
cwd=cwd,
env_vars=env_vars,
empty_hint=empty_hint
)
return cwd, msg, task
async def cmd_handler(self, bot: Bot, event: Event, state: T_State, matcher: Matcher, cmd=None):
# get real command content
cwd, msg, task = await self.cmd_run(bot=bot, event=event, state=state, matcher=matcher, cmd_replaced=cmd, empty_hint=True)
if self.workspace_mode == WorkspaceMode.serial:
queue = self.running_queues[cwd]
task = queue.run(task)
output = await task
if self.reply_notify:
if hasattr(event, "group_id") and hasattr(event, "message_id"):
# reply Mode
output = MessageSegment.reply(event.message_id) + output
else:
output = MessageSegment.at(event.get_user_id()) + "\n" + output
extra_msgs = {}
if self.hidden_result:
extra_msgs.update({"message_type": "private"})
logger.info(f"{msg} ===> {output}")
await matcher.send(output, **extra_msgs)
def build(self, build_sub=True, recursive=False) -> Matcher:
self.init_fn()
logger.info(f"building '{self.cmd}'")
if recursive:
build_sub = True
matcher = None
if self.cmd is not None:
config = nonebot.get_driver().config
command_start = config.command_start
regex = f"^({'|'.join(command_start)})({'|'.join(self.cmd_in_dice)})(.*)$"
self.regex_ = regex
matcher = on_regex(regex, flags=re.MULTILINE, block=True, priority=self.priority, **self.extra_kwargs)
logger.info(f"building command matcher with '{regex}', prior={self.priority}, kwargs={self.extra_kwargs}")
@matcher.handle()
async def my_cmd_handler(bot: Bot, event: Event, state: T_State, matcher: Matcher):
result = await self.cmd_handler(bot=bot, event=event, state=state, matcher=matcher)
return result
matcher.command_builder = self
matcher_subs = [x.build(build_sub=recursive, recursive=recursive) for x in self.sub_commands] if build_sub else None
logger.info(f"builded '{self.cmd}'")
for item in [matcher, matcher_subs]:
if item is not None:
return item