| 1 | import os |
| 2 | import platform |
| 3 | import select |
| 4 | import subprocess |
| 5 | import time |
| 6 | import sys |
| 7 | from typing import Optional, Tuple |
| 8 | from helpers import runtime |
| 9 | from plugins._code_execution.helpers import tty_session |
| 10 | from plugins._code_execution.helpers.shell_ssh import clean_string |
| 11 | |
| 12 | |
| 13 | def disable_pagers_in_env(env: dict | None = None) -> dict: |
| 14 | """Return a copy of ``env`` with terminal pagers disabled. |
| 15 | |
| 16 | Commands such as ``git diff``/``git log`` detect a TTY and pipe their output |
| 17 | through a pager (``more``/``less``). The non-interactive shells created by |
| 18 | the code execution tool never receive any user input, so the pager blocks |
| 19 | forever and spins at 100% CPU per process. Pointing the pager variables at |
| 20 | ``cat`` lets the output stream through instead. See issue #1697. |
| 21 | """ |
| 22 | env = dict(env if env is not None else os.environ) |
| 23 | env["PAGER"] = "cat" |
| 24 | env["GIT_PAGER"] = "cat" |
| 25 | return env |
| 26 | |
| 27 | |
| 28 | class LocalInteractiveSession: |
| 29 | def __init__(self, cwd: str|None = None): |
| 30 | self.session: tty_session.TTYSession|None = None |
| 31 | self.full_output = '' |
| 32 | self.cwd = cwd |
| 33 | |
| 34 | def __del__(self): |
| 35 | try: |
| 36 | if self.session: |
| 37 | self.session.kill() |
| 38 | except Exception: |
| 39 | pass |
| 40 | |
| 41 | async def connect(self): |
| 42 | self.session = tty_session.TTYSession( |
| 43 | runtime.get_terminal_executable(), |
| 44 | cwd=self.cwd, |
| 45 | env=disable_pagers_in_env(), |
| 46 | ) |
| 47 | await self.session.start() |
| 48 | await self.session.read_full_until_idle(idle_timeout=1, total_timeout=1) |
| 49 | |
| 50 | async def close(self): |
| 51 | if self.session: |
| 52 | session = self.session |
| 53 | self.session = None |
| 54 | try: |
| 55 | await session.close() |
| 56 | except Exception: |
| 57 | try: |
| 58 | session.kill() |
| 59 | except Exception: |
| 60 | pass |
| 61 | |
| 62 | async def send_command(self, command: str): |
| 63 | if not self.session: |
| 64 | raise Exception("Shell not connected") |
| 65 | self.full_output = "" |
| 66 | await self.session.sendline(command) |
| 67 | |
| 68 | def is_terminated(self) -> bool: |
| 69 | return self.session is None or self.session.is_terminated() |
| 70 | |
| 71 | def get_exit_code(self) -> int | None: |
| 72 | if not self.session: |
| 73 | return None |
| 74 | return self.session.get_exit_code() |
| 75 | |
| 76 | async def read_output(self, timeout: float = 0, reset_full_output: bool = False) -> Tuple[str, Optional[str]]: |
| 77 | if not self.session: |
| 78 | raise Exception("Shell not connected") |
| 79 | |
| 80 | if reset_full_output: |
| 81 | self.full_output = "" |
| 82 | |
| 83 | # get output from terminal |
| 84 | partial_output = await self.session.read_full_until_idle(idle_timeout=0.01, total_timeout=timeout) |
| 85 | self.full_output += partial_output |
| 86 | |
| 87 | # clean output |
| 88 | partial_output = clean_string(partial_output) |
| 89 | clean_full_output = clean_string(self.full_output) |
| 90 | |
| 91 | if not partial_output: |
| 92 | return clean_full_output, None |
| 93 | return clean_full_output, partial_output |