feat: автообновление на Linux без ручной установки пакета (#1223)

utils/linux_update.py

@@ -0,0 +1,180 @@
+"""
+In-place update on Linux.
+
+Detects how the app is installed (deb/rpm package or a standalone binary)
+and updates it without a manual download: packages go through the package
+manager, a standalone binary is replaced with the release file. Without
+write access the install runs through pkexec. Unsupported setups (AUR, pip,
+non-amd64, no pkexec) yield None and the caller shows the release page.
+"""
+from __future__ import annotations
+
+import logging
+import os
+import platform
+import shutil
+import subprocess
+import sys
+import tempfile
+from pathlib import Path
+from typing import Dict, List, Optional
+
+BINARY_ASSET = "TgWsProxy_linux_amd64"
+
+# install kind -> release asset suffix
+ASSET_SUFFIX = {"binary": "", "deb": ".deb", "rpm": ".rpm"}
+
+_INSTALL_TIMEOUT_SEC = 600.0
+
+
+def _run_quiet(cmd: List[str]) -> bool:
+    try:
+        return subprocess.run(
+            cmd,
+            stdout=subprocess.DEVNULL,
+            stderr=subprocess.DEVNULL,
+            timeout=15,
+        ).returncode == 0
+    except (OSError, subprocess.SubprocessError):
+        return False
+
+
+def exe_path() -> Path:
+    return Path(os.path.realpath(sys.executable))
+
+
+def _is_root() -> bool:
+    return hasattr(os, "geteuid") and os.geteuid() == 0
+
+
+def _can_elevate() -> bool:
+    return _is_root() or bool(shutil.which("pkexec"))
+
+
+def _elevate() -> List[str]:
+    return [] if _is_root() else ["pkexec"]
+
+
+def detect_install_kind(exe: Optional[Path] = None) -> Optional[str]:
+    """How the app is installed: "deb", "rpm", "binary" or None."""
+    exe = exe or exe_path()
+    if platform.machine().lower() not in ("x86_64", "amd64"):
+        return None  # releases ship amd64 only
+    if shutil.which("pacman") and _run_quiet(["pacman", "-Qo", str(exe)]):
+        return None  # AUR install, updated by its own package manager
+
+    can_elevate = _can_elevate()
+    if shutil.which("dpkg-query") and _run_quiet(["dpkg-query", "-S", str(exe)]):
+        return "deb" if can_elevate else None
+    if shutil.which("rpm") and _run_quiet(["rpm", "-qf", str(exe)]):
+        return "rpm" if can_elevate else None
+
+    # replacing the binary needs a writable directory or root
+    if os.access(str(exe.parent), os.W_OK) or can_elevate:
+        return "binary"
+    return None
+
+
+def asset_name(kind: str) -> str:
+    return BINARY_ASSET + ASSET_SUFFIX[kind]
+
+
+def install_cmd(kind: str, path: Path) -> List[str]:
+    """Command that installs the downloaded package."""
+    elevate = _elevate()
+    if kind == "deb":
+        if shutil.which("apt-get"):
+            return elevate + [
+                "apt-get", "install", "-y", "--reinstall",
+                "--allow-downgrades", str(path),
+            ]
+        return elevate + ["dpkg", "-i", str(path)]
+    if kind == "rpm":
+        if shutil.which("dnf"):
+            return elevate + ["dnf", "install", "-y", str(path)]
+        return elevate + ["rpm", "-U", "--force", str(path)]
+    raise ValueError("no install command for kind: {0}".format(kind))
+
+
+def replace_binary_cmd(src: Path, exe: Path) -> List[str]:
+    """Replace the binary as root; install(1) avoids ETXTBSY on the running file."""
+    return _elevate() + ["install", "-m", "755", str(src), str(exe)]
+
+
+def _run_install(cmd: List[str], log: Optional[logging.Logger] = None) -> Optional[str]:
+    if log:
+        log.info("Linux update: %s", " ".join(cmd))
+    proc = subprocess.run(
+        cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE,
+        timeout=_INSTALL_TIMEOUT_SEC,
+    )
+    if proc.returncode == 0:
+        return None
+    err = (proc.stderr or proc.stdout or b"").decode("utf-8", "replace").strip()
+    return err[-500:] or "exit code {0}".format(proc.returncode)
+
+
+def apply_update(
+    kind: str, url: str, digest: str = "",
+    log: Optional[logging.Logger] = None,
+) -> Optional[str]:
+    """Download and install the update.
+
+    Returns:
+        Error text, or None on success.
+    """
+    from utils.update_check import download_asset
+
+    exe = exe_path()
+    suffix = ASSET_SUFFIX[kind] or ".new"
+    # with a writable directory download next to the binary and os.replace it
+    in_place = kind == "binary" and os.access(str(exe.parent), os.W_OK)
+    dest_dir = exe.parent if in_place else Path(tempfile.gettempdir())
+
+    if log:
+        log.info("Linux update (%s): downloading %s", kind, url)
+    try:
+        tmp = download_asset(url, dest_dir, suffix=suffix, digest=digest)
+    except Exception as exc:
+        return str(exc)
+
+    try:
+        if kind != "binary":
+            return _run_install(install_cmd(kind, tmp), log=log)
+        os.chmod(str(tmp), 0o755)
+        if in_place:
+            os.replace(str(tmp), str(exe))
+            return None
+        return _run_install(replace_binary_cmd(tmp, exe), log=log)
+    except (OSError, ValueError, subprocess.SubprocessError) as exc:
+        return str(exc)
+    finally:
+        try:
+            tmp.unlink(missing_ok=True)
+        except OSError:
+            pass
+
+
+def relaunch_env() -> Dict[str, str]:
+    """Environment for relaunching without the unpacked PyInstaller bundle."""
+    env = {k: v for k, v in os.environ.items() if not k.startswith("_PYI_")}
+    env.pop("_MEIPASS", None)
+    mei = getattr(sys, "_MEIPASS", None)
+    for var in ("PATH", "LD_LIBRARY_PATH", "GI_TYPELIB_PATH", "GTK_PATH",
+                "GST_PLUGIN_PATH", "GIO_MODULE_DIR"):
+        original = env.pop(var + "_ORIG", None)
+        if original is not None:
+            env[var] = original
+            continue
+        if not mei or not env.get(var):
+            continue
+        target = os.path.normcase(mei.rstrip("\\/"))
+        kept = [
+            p for p in env[var].split(os.pathsep)
+            if os.path.normcase(p.rstrip("\\/")) != target
+        ]
+        if kept:
+            env[var] = os.pathsep.join(kept)
+        else:
+            env.pop(var, None)
+    return env