clan-cli: add ssh subcommand

pkgs/clan-cli/clan_cli/__init__.py

@@ -1,5 +1,7 @@
 # !/usr/bin/env python3
 import argparse
+import json
+import subprocess
 import sys
 
 from . import admin
@@ -11,6 +13,64 @@ except ImportError:  # pragma: no cover
     has_argcomplete = False
 
 
+def ssh(args: argparse.Namespace) -> None:
+    if args.json:
+        ssh_data = json.load(args.json)
+        subprocess.run(
+            [
+                "nix",
+                "shell",
+                "nixpkgs#sshpass",
+                "-c",
+                "torify",
+                "sshpass",
+                "-p",
+                ssh_data.get("password"),
+                "ssh",
+                "-o",
+                "UserKnownHostsFile=/dev/null",
+                "-o",
+                "StrictHostKeyChecking=no",
+                f'root@{ssh_data["address"]}',
+            ]
+            + args.ssh_args
+        )
+    elif args.png:
+        png_text = subprocess.Popen(
+            [
+                "nix",
+                "shell",
+                "nixpkgs#zbar",
+                "-c",
+                "zbarimg",
+                "--quiet",
+                "--raw",
+                args.png,
+            ],
+            stdout=subprocess.PIPE,
+        ).stdout.read()
+        ssh_data = json.loads(png_text)
+        subprocess.run(
+            [
+                "nix",
+                "shell",
+                "nixpkgs#sshpass",
+                "-c",
+                "torify",
+                "sshpass",
+                "-p",
+                ssh_data.get("password"),
+                "ssh",
+                "-o",
+                "UserKnownHostsFile=/dev/null",
+                "-o",
+                "StrictHostKeyChecking=no",
+                f'root@{ssh_data["address"]}',
+            ]
+            + args.ssh_args
+        )
+
+
 # this will be the entrypoint under /bin/clan (see pyproject.toml config)
 def main() -> None:
     parser = argparse.ArgumentParser(description="cLAN tool")
@@ -18,6 +78,22 @@ def main() -> None:
 
     parser_admin = subparsers.add_parser("admin")
     admin.register_parser(parser_admin)
+
+    parser_ssh = subparsers.add_parser("ssh", help="ssh to a remote machine")
+    parser_ssh.add_argument(
+        "-j",
+        "--json",
+        help="specify the json file for ssh data (generated by starting the clan installer",
+    )
+    parser_ssh.add_argument(
+        "-P",
+        "--png",
+        help="specify the json file for ssh data as the qrcode image (generated by starting the clan installer",
+    )
+    # TODO pass all args we don't parse into ssh_args, currently it fails if arg starts with -
+    parser_ssh.add_argument("ssh_args", nargs="*", default=[])
+    parser_ssh.set_defaults(func=ssh)
+
     if has_argcomplete:
         argcomplete.autocomplete(parser)