618 lines
24 KiB
Python
Executable File
618 lines
24 KiB
Python
Executable File
#!/usr/bin/env python3
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import argparse
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import grp
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import os
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import re
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import subprocess
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import sys
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import time
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from pathlib import Path
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def get_real_user_info():
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"""
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Detects the real user when running under sudo.
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Falls back to normal environment variables if not running under sudo.
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"""
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sudo_user = os.environ.get("SUDO_USER")
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sudo_uid = os.environ.get("SUDO_UID")
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sudo_gid = os.environ.get("SUDO_GID")
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if sudo_user and sudo_uid and sudo_gid:
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return sudo_user, int(sudo_uid), int(sudo_gid), Path(f"/home/{sudo_user}")
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else:
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return (
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os.environ.get("USER", "root"),
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os.getuid(),
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os.getgid(),
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Path.home()
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)
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def detect_timezone():
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tz = "UTC"
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tz_file = Path("/etc/timezone")
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if tz_file.exists():
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tz = tz_file.read_text().strip()
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else:
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try:
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result = subprocess.run(
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["timedatectl"], capture_output=True, text=True, check=False
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)
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m = re.search(r"Time zone:\s+(\S+)", result.stdout)
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if m:
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tz = m.group(1)
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except FileNotFoundError:
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pass
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return tz
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def detect_locale():
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return os.environ.get("LANG", "en_US.UTF-8")
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VERBOSE = False
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def lxc_prefix():
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"""Return ['sudo'] if the user isn't root and isn't in the lxd group."""
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if os.getuid() == 0:
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return []
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try:
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if grp.getgrnam("lxd").gr_gid in os.getgroups():
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return []
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except KeyError:
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pass
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return ["sudo"]
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def run_cmd(cmd, check=True):
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"""Helper to run shell commands."""
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try:
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return subprocess.run(cmd, check=check, text=True)
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except subprocess.CalledProcessError as e:
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print(f"Error executing command: {' '.join(cmd)}", file=sys.stderr)
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sys.exit(e.returncode)
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def lxc_run(args, check=True):
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"""Run an lxc command via run_cmd, auto-adding sudo if needed."""
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cmd = [*lxc_prefix(), "lxc", *args]
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if VERBOSE:
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print(f"+ {' '.join(cmd)}", file=sys.stderr)
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return run_cmd(cmd, check=check)
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def lxc_subprocess(args, **kwargs):
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"""Run an lxc command via subprocess.run, auto-adding sudo if needed."""
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cmd = [*lxc_prefix(), "lxc", *args]
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if VERBOSE:
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print(f"+ {' '.join(cmd)}", file=sys.stderr)
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return subprocess.run(cmd, **kwargs)
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def handle_list(args):
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print("Fetching lxcd container environments...")
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result = lxc_subprocess(
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["list", "user.lxcd=true", "--format", "json"],
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capture_output=True, text=True, check=False
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)
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if result.returncode != 0:
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print("Error communicating with LXD.", file=sys.stderr)
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return
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import json
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containers = json.loads(result.stdout)
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print(f"\n{'CONTAINER NAME':<25} {'STATUS':<12} {'IPV4 ADDRESS':<25} {'ACTIVE OPTIONS':<25}")
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print("-" * 87)
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count = 0
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for c in containers:
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name = c["name"]
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status = c["status"]
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ipv4 = "N/A"
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state = c.get("state")
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if state:
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networks = state.get("network", {})
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eth0 = networks.get("eth0", {})
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addrs = [a["address"] for a in eth0.get("addresses", [])
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if a.get("family") == "inet"]
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if addrs:
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ipv4 = addrs[0]
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active_opts = []
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# Check nesting (works whether running or stopped)
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nesting_check = lxc_subprocess(
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["config", "get", name, "security.nesting"],
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capture_output=True, text=True, check=False
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)
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if nesting_check.stdout.strip() == "true":
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active_opts.append("nesting")
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# Check certs (works whether running or stopped)
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dev_check = lxc_subprocess(
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["config", "device", "show", name],
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capture_output=True, text=True, check=False
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)
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if "host-certs" in dev_check.stdout:
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active_opts.append("certs")
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# Check git (works whether running or stopped)
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if "gitconfig" in dev_check.stdout:
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active_opts.append("git")
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# Running-only checks
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if status.upper() == "RUNNING":
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ssh_check = lxc_subprocess(
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["exec", name, "--", "systemctl", "is-active", "ssh.socket"],
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capture_output=True, text=True, check=False
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)
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if ssh_check.stdout.strip() == "active":
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active_opts.append("sshd")
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apt_cache_check = lxc_subprocess(
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["exec", name, "--", "test", "-f", "/etc/apt/apt.conf.d/00lxcd-proxy"],
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capture_output=True, text=True, check=False
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)
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if apt_cache_check.returncode == 0:
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active_opts.append("aptcache")
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ssh_client_check = lxc_subprocess(
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["exec", name, "--", "which", "ssh"],
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capture_output=True, text=True, check=False
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)
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if ssh_client_check.returncode == 0:
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active_opts.append("ssh-client")
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else:
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# Offline guess: check cloud-init config for apt proxy
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ci_check = lxc_subprocess(
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["config", "get", name, "cloud-init.user-data"],
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capture_output=True, text=True, check=False
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)
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if "Acquire::http::Proxy" in ci_check.stdout:
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active_opts.append("aptcache(?)")
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if "openssh-client" in ci_check.stdout:
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active_opts.append("ssh-client(?)")
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opts_str = ", ".join(active_opts) if active_opts else "none"
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print(f"{name:<25} {status:<12} {ipv4:<25} {opts_str:<25}")
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count += 1
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if count == 0:
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print("No active lxcd environments found.")
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print()
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def handle_clone(args):
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print(f"Cloning container '{args.source}' to '{args.name}'...")
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# 1. Native LXD copy (duplicates the filesystem, mounts, and tags)
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lxc_run([ "copy", args.source, args.name])
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# 2. Start the new cloned container
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print(f"Starting cloned container '{args.name}'...")
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lxc_run([ "start", args.name])
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# 3. Wait for network/cloud-init stabilization
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lxc_run([ "exec", args.name, "--", "cloud-init", "status", "--wait"], check=False)
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print(f"Container '{args.name}' cloned successfully from '{args.source}'!")
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def handle_create(args):
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host_username, uid, gid, host_home = get_real_user_info()
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host_timezone = detect_timezone()
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host_locale = detect_locale()
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# Paths for targeted workspace sharing
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host_coder_dir = host_home / "Coder"
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container_coder_path = f"/home/{host_username}/Coder"
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# Ensure the 'Coder' directory exists on the host machine
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if not host_coder_dir.exists():
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print(f"Creating missing directory on host: {host_coder_dir}")
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host_coder_dir.mkdir(parents=True, exist_ok=True)
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os.chown(host_coder_dir, uid, gid)
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print(f"Creating LXD container '{args.name}' from image '{args.image}'...")
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# Determine SSH action based on --sshd flag
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ssh_action = "systemctl disable --now ssh.service ssh.socket"
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if args.sshd:
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ssh_action = "systemctl enable --now ssh.service ssh.socket"
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print("Security profiles adjusted: SSH daemon and socket explicitly requested.")
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# Cloud-init configuration
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apt_proxy_cmd = (
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f" - mkdir -p /etc/apt/apt.conf.d\n"
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f" - echo 'Acquire::http::Proxy \"{args.aptcache}\";' > /etc/apt/apt.conf.d/00lxcd-proxy\n"
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) if args.aptcache else ""
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ssh_client_packages = "packages:\n - openssh-client\n" if args.ssh_client else ""
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ssh_client_cmd = (
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f" - mkdir -p /home/{host_username}/.ssh\n"
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f" - chmod 700 /home/{host_username}/.ssh\n"
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) if args.ssh_client else ""
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cloud_config = f"""#cloud-config
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timezone: {host_timezone}
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locale: {host_locale}
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users:
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- name: {host_username}
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gecos: lxcd user
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primary_group: {host_username}
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groups: [adm, sudo, plugdev]
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shell: /bin/bash
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sudo: ALL=(ALL) NOPASSWD:ALL
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lock_passwd: true
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homedir: /home/{host_username}
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groups:
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- {host_username}
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{ssh_client_packages}bootcmd:
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- mkdir -p /home/{host_username}
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- chown {uid}:{gid} /home/{host_username}
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runcmd:
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- cp -rpn /etc/skel/. /home/{host_username}/
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- mkdir -p {container_coder_path}
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{ssh_client_cmd} - chown -R {host_username}:{host_username} /home/{host_username}
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- {ssh_action}
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{apt_proxy_cmd}"""
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# Initialize container
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lxc_run([ "init", args.image, args.name])
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# Tag the container so lxcd knows it owns it
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print("Tagging container as managed by lxcd...")
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lxc_run([ "config", "set", args.name, "user.lxcd", "true"])
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# Inject Cloud-init settings
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print(f"Injecting cloud-init config for user '{host_username}'...")
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lxc_run([ "config", "set", args.name, "cloud-init.user-data", cloud_config])
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# Mount host's Coder directory using shift=true
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print(f"Mounting host {host_coder_dir} -> {container_coder_path} (shift=true)...")
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lxc_run(["config", "device", "add", args.name, "host-coder", "disk",
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f"source={host_coder_dir}",
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f"path={container_coder_path}",
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"shift=true"])
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# Handle --git option
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if args.git:
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gitconfig_path = host_home / ".gitconfig"
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if gitconfig_path.exists():
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container_git_path = f"/home/{host_username}/.gitconfig"
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print(f"Mapping host git configurations to {container_git_path} (shift=true)...")
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lxc_run(["config", "device", "add", args.name, "gitconfig", "disk",
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f"source={gitconfig_path}",
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f"path={container_git_path}",
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"shift=true"])
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else:
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print(f"Warning: --git requested, but {gitconfig_path} was not found on host.", file=sys.stderr)
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# Handle --nested option
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if args.nested:
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print("Enabling nesting capabilities...")
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lxc_run([ "config", "set", args.name, "security.nesting", "true"])
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lxc_run([ "config", "set", args.name, "security.syscalls.intercept.mknod", "true"])
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# Handle --aptcache option
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if args.aptcache:
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print(f"APT cache/proxy will be configured to {args.aptcache} via cloud-init...")
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# Handle --ssh-client option
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if args.ssh_client:
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print(f"SSH client and ~/.ssh directory will be set up for '{host_username}' via cloud-init...")
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# Handle --certs option
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if args.certs:
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host_certs = Path("/etc/ssl/certs/ca-certificates.crt")
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if host_certs.exists():
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print("Mounting host ca-certificates bundle securely into container...")
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lxc_run(["config", "device", "add", args.name, "host-certs", "disk",
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f"source={host_certs}",
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f"path={host_certs}",
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"shift=true"])
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else:
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print("Warning: Host cert bundle path not found. Skipping certificate mount configuration.")
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# Start container and await cloud-init provisioning
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print("Starting container and executing cloud-init user provisioning...")
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lxc_run([ "start", args.name])
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lxc_run([ "exec", args.name, "--", "cloud-init", "status", "--wait"], check=False)
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print(f"Container '{args.name}' is ready! Workspace mounted at {container_coder_path}")
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def handle_enter(args):
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_, uid, gid, host_home = get_real_user_info()
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host_cwd = os.getcwd()
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# Dynamically find the user matching your UID inside the container
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try:
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result = lxc_subprocess(
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["exec", args.name, "--", "id", "-nu", str(uid)],
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capture_output=True, text=True, check=True
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)
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container_username = result.stdout.strip()
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except subprocess.CalledProcessError:
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container_username = "root"
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container_home = f"/home/{container_username}"
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# Smart CWD Mapping: Ensure the host directory actually exists in the container
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host_coder_dir = str(host_home / "Coder")
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container_coder_dir = f"{container_home}/Coder"
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# If the user is inside the mapped Coder directory on the host, translate the path
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if host_cwd.startswith(host_coder_dir):
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target_cwd = host_cwd.replace(host_coder_dir, container_coder_dir, 1)
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else:
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# Fallback to the container's home directory if executed from an unmapped host path
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target_cwd = container_home
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env_prefix = (
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f"HOME={container_home} "
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f"TERM={os.environ.get('TERM', 'xterm-256color')} "
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f"LANG={os.environ.get('LANG', 'C.UTF-8')} "
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)
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display = os.environ.get("DISPLAY")
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if display:
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env_prefix += f"DISPLAY={display} "
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# Check if container has ~/.ssh (set up by --ssh-client) and start ssh-agent if so
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has_ssh_client = lxc_subprocess(
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["exec", args.name, "--", "test", "-d", f"{container_home}/.ssh"],
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capture_output=True, text=True, check=False
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).returncode == 0
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# Execute using native LXD flags for user, group, and working directory
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prefix = lxc_prefix()
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shell_cmd = "exec /bin/bash --login"
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if has_ssh_client:
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shell_cmd = "eval $(ssh-agent) && ssh-add && " + shell_cmd
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exec_cmd = [
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"lxc", "exec", args.name,
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"--cwd", target_cwd,
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"--user", str(uid),
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"--group", str(gid),
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"--",
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"sh", "-c", f"env {env_prefix} sh -c '{shell_cmd}'"
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]
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if prefix:
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os.execvp("sudo", ["sudo", *exec_cmd])
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else:
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os.execvp("lxc", exec_cmd)
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def handle_stop(args):
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print(f"Stopping container '{args.name}'...")
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lxc_run([ "stop", args.name], check=False)
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print(f"Container '{args.name}' stopped.")
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def handle_start(args):
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print(f"Starting container '{args.name}'...")
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lxc_run([ "start", args.name])
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lxc_run([ "exec", args.name, "--", "cloud-init", "status", "--wait"], check=False)
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print(f"Container '{args.name}' started.")
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def handle_restart(args):
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print(f"Restarting container '{args.name}'...")
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lxc_run([ "restart", args.name], check=False)
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lxc_run([ "exec", args.name, "--", "cloud-init", "status", "--wait"], check=False)
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print(f"Container '{args.name}' restarted.")
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def handle_delete(args):
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print(f"Stopping container '{args.name}'...")
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lxc_run([ "stop", args.name], check=False)
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print(f"Deleting container '{args.name}'...")
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lxc_run([ "delete", args.name])
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print(f"Container '{args.name}' deleted successfully.")
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def container_exists(name):
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result = lxc_subprocess(
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["info", name],
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capture_output=True, text=True, check=False
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)
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return result.returncode == 0
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def handle_add(args):
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host_username, uid, gid, host_home = get_real_user_info()
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if not container_exists(args.name):
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print(f"Error: Container '{args.name}' does not exist.", file=sys.stderr)
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sys.exit(1)
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if not args.nested and not args.sshd and not args.git and not args.certs and not args.aptcache and not args.ssh_client:
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print("Error: Specify at least one option to add.\n"
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"Example: lxcd add <name> --git --nested", file=sys.stderr)
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sys.exit(1)
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state = lxc_subprocess(
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["info", args.name],
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capture_output=True, text=True, check=False
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)
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was_stopped = "Status: RUNNING" not in state.stdout
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if was_stopped:
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print(f"Starting container '{args.name}' temporarily to apply system operations...")
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lxc_subprocess(["start", args.name], check=False)
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time.sleep(2)
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if args.nested:
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print(f"Enabling nesting support for '{args.name}'...")
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lxc_run([ "config", "set", args.name, "security.nesting", "true"])
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lxc_run([ "config", "set", args.name, "security.syscalls.intercept.mknod", "true"])
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if args.sshd:
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print(f"Activating SSH daemon and socket inside '{args.name}'...")
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lxc_run([ "exec", args.name, "--", "systemctl", "enable", "--now", "ssh.service", "ssh.socket"])
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if args.git:
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was_running = not was_stopped
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print(f"Installing git inside '{args.name}'...")
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lxc_run([ "exec", args.name, "--", "env", "DEBIAN_FRONTEND=noninteractive", "apt-get", "update", "-y"])
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lxc_run([ "exec", args.name, "--", "env", "DEBIAN_FRONTEND=noninteractive", "apt-get", "install", "-y", "git"])
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host_gitconfig = host_home / ".gitconfig"
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if host_gitconfig.exists():
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print(f"Mapping host .gitconfig into '{args.name}' as a device mount...")
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lxc_subprocess(["stop", args.name], check=False)
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lxc_subprocess(["config", "device", "remove", args.name, "gitconfig"],
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capture_output=True, text=True, check=False)
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lxc_run(["config", "device", "add", args.name, "gitconfig", "disk",
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f"source={host_gitconfig}",
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f"path=/home/{host_username}/.gitconfig",
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"shift=true"])
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if was_running:
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lxc_run([ "start", args.name])
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lxc_run([ "exec", args.name, "--", "cloud-init", "status", "--wait"], check=False)
|
|
else:
|
|
print(f"Warning: Host ~/.gitconfig not found. Git was installed, but file copy skipped.")
|
|
|
|
if args.certs:
|
|
host_certs = Path("/etc/ssl/certs/ca-certificates.crt")
|
|
if host_certs.exists():
|
|
print(f"Mounting host ca-certificates bundle into '{args.name}'...")
|
|
lxc_subprocess(["config", "device", "remove", args.name, "host-certs"],
|
|
capture_output=True, text=True, check=False)
|
|
lxc_run(["config", "device", "add", args.name, "host-certs", "disk",
|
|
f"source={host_certs}",
|
|
f"path={host_certs}",
|
|
"shift=true"])
|
|
else:
|
|
print("Warning: Host cert bundle path not found. Skipping certificate configuration.")
|
|
|
|
if args.aptcache:
|
|
print(f"Configuring APT proxy to {args.aptcache} inside '{args.name}'...")
|
|
lxc_run([ "exec", args.name, "--", "mkdir", "-p", "/etc/apt/apt.conf.d"])
|
|
lxc_run([ "exec", args.name, "--", "sh", "-c",
|
|
f"echo 'Acquire::http::Proxy \"{args.aptcache}\";' > /etc/apt/apt.conf.d/00lxcd-proxy"])
|
|
|
|
if args.ssh_client:
|
|
print(f"Installing SSH client and setting up ~/.ssh inside '{args.name}'...")
|
|
lxc_run([ "exec", args.name, "--", "env", "DEBIAN_FRONTEND=noninteractive", "apt-get", "update", "-y"])
|
|
lxc_run([ "exec", args.name, "--", "env", "DEBIAN_FRONTEND=noninteractive", "apt-get", "install", "-y", "openssh-client"])
|
|
lxc_run([ "exec", args.name, "--", "mkdir", "-p", f"/home/{host_username}/.ssh"])
|
|
lxc_run([ "exec", args.name, "--", "chmod", "700", f"/home/{host_username}/.ssh"])
|
|
lxc_run([ "exec", args.name, "--", "chown", f"{host_username}:{host_username}", f"/home/{host_username}/.ssh"])
|
|
|
|
if was_stopped:
|
|
print(f"Returning '{args.name}' to its original stopped state...")
|
|
lxc_subprocess(["stop", args.name], check=False)
|
|
|
|
print(f"\nSuccessfully updated container '{args.name}' with requested features!")
|
|
|
|
|
|
def handle_rename(args):
|
|
print(f"Preparing to rename '{args.old_name}' to '{args.new_name}'...")
|
|
|
|
# 1. LXD requires containers to be stopped before renaming
|
|
print(f"Stopping '{args.old_name}'...")
|
|
# Using stdout/stderr redirection internally to hide the error if it's already stopped
|
|
lxc_subprocess(
|
|
["stop", args.old_name],
|
|
stdout=subprocess.DEVNULL,
|
|
stderr=subprocess.DEVNULL
|
|
)
|
|
|
|
# 2. Execute the rename
|
|
lxc_run([ "rename", args.old_name, args.new_name])
|
|
|
|
# 3. Restart the container under its new name
|
|
print(f"Starting renamed container '{args.new_name}'...")
|
|
lxc_run([ "start", args.new_name])
|
|
|
|
# 4. Wait for it to stabilize
|
|
lxc_run([ "exec", args.new_name, "--", "cloud-init", "status", "--wait"], check=False)
|
|
|
|
print(f"Container successfully renamed to '{args.new_name}'!")
|
|
|
|
def main():
|
|
parser = argparse.ArgumentParser(description="lxcd: A Distrobox-like wrapper for LXD (Sudo Optimized)")
|
|
parser.add_argument("-v", "--verbose", action="store_true", help="Show verbose command output")
|
|
subparsers = parser.add_subparsers(dest="command", required=True)
|
|
|
|
# Create command
|
|
parser_create = subparsers.add_parser("create", help="Create a new LXD container")
|
|
parser_create.add_argument("name", help="Name of the container")
|
|
parser_create.add_argument("-i", "--image", default="ubuntu:", help="LXD image to use (defaults to 'ubuntu:')")
|
|
parser_create.add_argument("--nested", action="store_true", help="Enable nesting")
|
|
parser_create.add_argument("--sshd", action="store_true", help="Enable SSH daemon")
|
|
parser_create.add_argument("--git", action="store_true", help="Map host ~/.gitconfig into the container")
|
|
parser_create.add_argument("--certs", action="store_true", help="Mount host CA certificates bundle")
|
|
parser_create.add_argument("--aptcache", help="URL for an APT cache/proxy (e.g. http://10.0.0.1:3142)")
|
|
parser_create.add_argument("--ssh-client", action="store_true",
|
|
help="Install SSH client and set up ~/.ssh for remote access from within the container")
|
|
|
|
# Clone command
|
|
parser_clone = subparsers.add_parser("clone", help="Clone an existing LXD container")
|
|
parser_clone.add_argument("source", help="Name of the source container")
|
|
parser_clone.add_argument("name", help="Name of the new cloned container")
|
|
|
|
# Rename command
|
|
parser_rename = subparsers.add_parser("rename", aliases=["mv"], help="Rename an existing LXD container")
|
|
parser_rename.add_argument("old_name", help="Current name of the container")
|
|
parser_rename.add_argument("new_name", help="New name for the container")
|
|
|
|
# Enter command
|
|
parser_enter = subparsers.add_parser("enter", help="Enter an existing LXD container")
|
|
parser_enter.add_argument("name", help="Name of the container to enter")
|
|
|
|
# List command
|
|
parser_list = subparsers.add_parser("list", aliases=["ls"], help="List all managed LXD containers")
|
|
|
|
# Stop command
|
|
parser_stop = subparsers.add_parser("stop", help="Stop a running container")
|
|
parser_stop.add_argument("name", help="Name of the container to stop")
|
|
|
|
# Start command
|
|
parser_start = subparsers.add_parser("start", help="Start a stopped container")
|
|
parser_start.add_argument("name", help="Name of the container to start")
|
|
|
|
# Restart command
|
|
parser_restart = subparsers.add_parser("restart", help="Restart a container")
|
|
parser_restart.add_argument("name", help="Name of the container to restart")
|
|
|
|
# Delete command
|
|
parser_delete = subparsers.add_parser("delete", help="Delete an LXD container")
|
|
parser_delete.add_argument("name", help="Name of the container to delete")
|
|
|
|
# Add command
|
|
parser_add = subparsers.add_parser("add", help="Add features to an existing container")
|
|
parser_add.add_argument("name", help="Name of the container")
|
|
parser_add.add_argument("--nested", action="store_true", help="Enable nesting")
|
|
parser_add.add_argument("--sshd", action="store_true", help="Enable SSH daemon")
|
|
parser_add.add_argument("--git", action="store_true", help="Install git and copy ~/.gitconfig")
|
|
parser_add.add_argument("--certs", action="store_true", help="Mount host CA certificates bundle")
|
|
parser_add.add_argument("--aptcache", help="URL for an APT cache/proxy (e.g. http://10.0.0.1:3142)")
|
|
parser_add.add_argument("--ssh-client", action="store_true",
|
|
help="Install SSH client and set up ~/.ssh for remote access from within the container")
|
|
|
|
args = parser.parse_args()
|
|
|
|
global VERBOSE
|
|
VERBOSE = args.verbose
|
|
|
|
if args.command == "create":
|
|
handle_create(args)
|
|
elif args.command == "clone":
|
|
handle_clone(args)
|
|
elif args.command in ["rename", "mv"]:
|
|
handle_rename(args)
|
|
elif args.command == "enter":
|
|
handle_enter(args)
|
|
elif args.command in ["list", "ls"]:
|
|
handle_list(args)
|
|
elif args.command == "stop":
|
|
handle_stop(args)
|
|
elif args.command == "start":
|
|
handle_start(args)
|
|
elif args.command == "restart":
|
|
handle_restart(args)
|
|
elif args.command == "delete":
|
|
handle_delete(args)
|
|
elif args.command == "add":
|
|
handle_add(args)
|
|
|
|
if __name__ == "__main__":
|
|
main()
|
|
|
|
|