396 lines
13 KiB
Python
396 lines
13 KiB
Python
import subprocess
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import os
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import logging
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import time
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import platform
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import stat
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import urllib.request
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import re
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import tarfile
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import tempfile
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import shutil
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import threading
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from typing import Optional
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from fastapi import APIRouter, Request
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from fastapi.responses import JSONResponse
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logger = logging.getLogger(__name__)
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router = APIRouter()
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_sshx_link = None
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_sshx_process: Optional[subprocess.Popen] = None
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_sshx_installing = False
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_sshx_bin = "/tmp/sshx"
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_sshx_bin_alt = os.path.expanduser("~/.local/bin/sshx")
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_sshx_tar = "/tmp/sshx.tar.gz"
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_sshx_link_file = "/tmp/sshx_link.txt"
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_sshx_pid_file = "/tmp/sshx.pid"
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_sshx_last_output = ""
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_sshx_last_error = ""
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LINK_RE = re.compile(r"https://sshx\.io/s/[A-Za-z0-9\-_]+(?:#[^\s\"']*)?")
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def _dist_link_file():
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try:
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return os.path.join(os.path.dirname(__file__), "dist", "link.json")
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except Exception:
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return None
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def _write_dist_link(link: str):
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try:
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p = _dist_link_file()
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if p:
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os.makedirs(os.path.dirname(p), exist_ok=True)
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with open(p, "w") as f:
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f.write(link)
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except Exception as e:
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logger.debug(f"write dist link failed: {e}")
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def _detect_sshx_arch():
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machine = platform.machine().lower()
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system = platform.system().lower()
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if system == "darwin":
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suffix = "-apple-darwin"
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if machine in ("aarch64", "arm64", "armv8l", "armv8b"):
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arch = "aarch64"
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elif machine in ("x86_64", "x64", "amd64"):
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arch = "x86_64"
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else:
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arch = "aarch64" if "arm" in machine else "x86_64"
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return arch, suffix
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suffix = "-unknown-linux-musl"
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if machine in ("aarch64", "aarch64_be", "arm64", "armv8b", "armv8l"):
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arch = "aarch64"
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elif machine in ("x86_64", "x64", "amd64"):
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arch = "x86_64"
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elif machine == "armv6l":
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arch = "arm"
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suffix += "eabihf"
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elif machine == "armv7l":
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arch = "armv7"
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suffix += "eabihf"
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else:
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arch = "x86_64"
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return arch, suffix
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def _get_sshx_url() -> str:
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arch, suffix = _detect_sshx_arch()
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return f"https://s3.amazonaws.com/sshx/sshx-{arch}{suffix}.tar.gz"
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def _find_sshx_bin() -> Optional[str]:
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for p in [_sshx_bin, _sshx_bin_alt, shutil.which("sshx")]:
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if p and os.path.exists(p) and os.access(p, os.X_OK):
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return p
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return None
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def _ensure_sshx() -> Optional[str]:
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existing = _find_sshx_bin()
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if existing:
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return existing
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global _sshx_installing, _sshx_last_error
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_sshx_installing = True
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try:
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url = _get_sshx_url()
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dest = _sshx_bin
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os.makedirs(os.path.dirname(_sshx_bin_alt), exist_ok=True)
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tmp_tar = _sshx_tar
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logger.info(f"Downloading sshx {url} -> {tmp_tar}")
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try:
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urllib.request.urlretrieve(url, tmp_tar)
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except Exception as e:
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_sshx_last_error = f"download failed {url}: {e}"
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logger.error(_sshx_last_error)
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return None
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with tarfile.open(tmp_tar, "r:gz") as tf:
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member = None
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for m in tf.getmembers():
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base = os.path.basename(m.name)
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if base.startswith("._"):
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continue
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if base == "sshx" and m.isfile():
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member = m
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break
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if not member:
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for m in tf.getmembers():
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base = os.path.basename(m.name)
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if base.startswith("._"):
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continue
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if m.isfile():
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member = m
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break
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if not member:
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member = tf.getmembers()[0]
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tmpdir = tempfile.mkdtemp()
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try:
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tf.extract(member, path=tmpdir, filter='fully_trusted')
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except TypeError:
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tf.extract(member, path=tmpdir)
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extracted = os.path.join(tmpdir, member.name)
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if not os.path.exists(extracted):
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for root, _, files in os.walk(tmpdir):
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if "sshx" in files:
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extracted = os.path.join(root, "sshx")
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break
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if not extracted or not os.path.exists(extracted):
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_sshx_last_error = f"extract failed: member={member.name}"
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return None
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shutil.copy2(extracted, dest)
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os.chmod(dest, os.stat(dest).st_mode | stat.S_IEXEC)
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try:
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if dest != _sshx_bin_alt:
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shutil.copy2(dest, _sshx_bin_alt)
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os.chmod(_sshx_bin_alt, os.stat(_sshx_bin_alt).st_mode | stat.S_IEXEC)
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except Exception:
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pass
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shutil.rmtree(tmpdir, ignore_errors=True)
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try:
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os.remove(tmp_tar)
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except Exception:
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pass
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if not os.path.exists(dest) or not os.access(dest, os.X_OK):
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_sshx_last_error = f"binary not executable after install: {dest}"
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return None
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logger.info(f"sshx installed to {dest}")
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return dest
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except Exception as e:
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_sshx_last_error = f"install exception: {e}"
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logger.error(_sshx_last_error, exc_info=True)
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return None
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finally:
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_sshx_installing = False
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def _is_alive() -> bool:
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global _sshx_process
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if _sshx_process is not None and _sshx_process.poll() is None:
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return True
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try:
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if os.path.exists(_sshx_pid_file):
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with open(_sshx_pid_file, "r") as f:
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pid = int(f.read().strip())
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os.kill(pid, 0)
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return True
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except Exception:
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pass
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return False
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def _read_link_file() -> str | None:
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try:
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if os.path.exists(_sshx_link_file):
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with open(_sshx_link_file, "r") as f:
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txt = f.read()
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m = LINK_RE.search(txt)
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if m:
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return m.group(0)
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except Exception:
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pass
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return None
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def _run_sshx_nohup() -> str | None:
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global _sshx_link, _sshx_process, _sshx_last_error
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bin_path = _ensure_sshx()
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if not bin_path:
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return None
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for p in [_sshx_link_file, _sshx_pid_file]:
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try:
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os.remove(p)
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except Exception:
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pass
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has_nohup = shutil.which("nohup") is not None
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has_setsid = shutil.which("setsid") is not None
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has_bash = shutil.which("bash") is not None
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shell = "bash" if has_bash else "sh"
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logger.info(f"Starting sshx via {'nohup' if has_nohup else 'setsid' if has_setsid else 'python Popen'} {bin_path} --quiet > {_sshx_link_file} 2>&1 &")
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if not has_nohup and not has_setsid:
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try:
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logger.info("nohup/setsid not found, falling back to Python detached Popen")
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with open(_sshx_link_file, "w") as out:
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proc = subprocess.Popen(
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[bin_path, "--quiet"],
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stdout=out,
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stderr=subprocess.STDOUT,
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stdin=subprocess.DEVNULL,
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start_new_session=True,
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close_fds=True,
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)
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_sshx_process = proc
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with open(_sshx_pid_file, "w") as f:
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f.write(str(proc.pid))
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logger.info(f"sshx fallback pid={proc.pid}")
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for _ in range(20):
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time.sleep(1)
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link = _read_link_file()
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if link:
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_sshx_link = link
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_write_dist_link(link)
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logger.info(f"sshx fallback ready: {link}")
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return link
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link = _read_link_file()
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if link:
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_write_dist_link(link)
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return link
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except Exception as e:
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_sshx_last_error = f"fallback Popen failed: {e}"
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logger.error(_sshx_last_error, exc_info=True)
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return None
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try:
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prefix = "nohup" if has_nohup else "setsid"
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cmd = f"{prefix} {bin_path} --quiet > {_sshx_link_file} 2>&1 < /dev/null & echo $!"
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result = subprocess.run([shell, "-c", cmd], capture_output=True, text=True, timeout=5)
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pid_str = result.stdout.strip().split()[-1] if result.stdout.strip() else ""
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try:
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pid = int(pid_str)
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with open(_sshx_pid_file, "w") as f:
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f.write(str(pid))
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logger.info(f"sshx nohup pid={pid}")
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except Exception:
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logger.warning(f"failed to get pid: {result.stdout} {result.stderr}")
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for _ in range(20):
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time.sleep(1)
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link = _read_link_file()
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if link:
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_sshx_link = link
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_write_dist_link(link)
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logger.info(f"sshx nohup ready: {link}")
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return link
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if pid_str and pid_str.isdigit():
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try:
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os.kill(int(pid_str), 0)
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except OSError:
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try:
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txt = open(_sshx_link_file).read() if os.path.exists(_sshx_link_file) else ""
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except Exception:
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txt = ""
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logger.warning(f"sshx nohup died early, tail: {txt[-400:]}")
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break
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link = _read_link_file()
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if link:
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_sshx_link = link
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_write_dist_link(link)
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return link
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return None
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except Exception as e:
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logger.error(f"nohup start failed: {e}", exc_info=True)
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return None
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# auto-start with nohup so hermes doesn't kill shell
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def _dashboard_auto_start():
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global _sshx_link
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try:
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time.sleep(3)
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existing = _read_link_file()
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if existing:
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_sshx_link = existing
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logger.info(f"dashboard auto-start: existing link {existing}")
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return
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if _is_alive() and _sshx_link:
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return
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logger.info("dashboard auto-start sshx via nohup...")
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link = _run_sshx_nohup()
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if link:
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logger.info(f"dashboard auto-start ready: {link}")
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except Exception as e:
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logger.error(f"dashboard auto-start exception: {e}", exc_info=True)
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threading.Thread(target=_dashboard_auto_start, daemon=True).start()
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@router.get("/status")
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async def sshx_status():
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global _sshx_link, _sshx_installing, _sshx_process
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if _is_alive() and _sshx_link:
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return {"status": "running", "link": _sshx_link, "pid": _sshx_process.pid if _sshx_process else None}
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# check file (nohup)
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link = _read_link_file()
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if link:
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_sshx_link = link
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return {"status": "running", "link": link, "source": "file"}
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if _sshx_installing:
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return {"status": "installing", "link": None}
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if _is_alive() and not _sshx_link:
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return {"status": "starting", "link": None}
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return {"status": "stopped", "link": None}
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@router.get("/debug")
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async def debug_info():
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return {
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"bin": _find_sshx_bin(),
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"is_alive": _is_alive(),
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"pid": _sshx_process.pid if _sshx_process and _is_alive() else None,
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"link": _sshx_link,
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"link_file": _read_link_file(),
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"last_error": _sshx_last_error,
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"platform": platform.platform(),
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}
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@router.get("/start")
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async def start_sshx(request: Request):
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# keep for manual, but use nohup
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link = _read_link_file()
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if link:
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return {"status": "already_running", "link": link}
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link = _run_sshx_nohup()
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if link:
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return {"status": "running", "link": link}
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return JSONResponse(status_code=500, content={"status": "error", "message": _sshx_last_error or "Failed to start sshx via nohup"})
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@router.post("/start")
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async def start_sshx_post(request: Request):
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return await start_sshx(request)
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@router.post("/stop")
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async def stop_sshx():
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global _sshx_process, _sshx_link
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if _sshx_process and _sshx_process.poll() is None:
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try:
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os.killpg(os.getpgid(_sshx_process.pid), 15)
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except Exception:
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pass
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try:
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if os.path.exists(_sshx_pid_file):
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with open(_sshx_pid_file) as f:
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pid = int(f.read().strip())
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try:
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os.kill(pid, 15)
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time.sleep(0.3)
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os.kill(pid, 9)
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except OSError:
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pass
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os.remove(_sshx_pid_file)
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except Exception:
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pass
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try:
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if os.path.exists(_sshx_link_file):
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os.remove(_sshx_link_file)
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except Exception:
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pass
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_sshx_process = None
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_sshx_link = None
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return {"status": "stopped"}
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@router.get("/stop")
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async def stop_sshx_get():
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return await stop_sshx()
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@router.get("/restart-dashboard")
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async def restart_dashboard():
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return {"status": "deprecated", "message": "No restart needed."}
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@router.post("/restart-dashboard")
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async def restart_dashboard_post():
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return {"status": "deprecated", "message": "No restart needed."}
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