70 lines
2.2 KiB
Python
70 lines
2.2 KiB
Python
import re
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import urllib.parse
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from pathlib import Path
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from typing import Any
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from clan_cli.errors import ClanError
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from clan_cli.ssh.host import Host
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from clan_cli.ssh.host_key import HostKeyCheck
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def parse_deployment_address(
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machine_name: str,
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host: str,
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host_key_check: HostKeyCheck,
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forward_agent: bool = True,
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meta: dict[str, Any] | None = None,
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private_key: Path | None = None,
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) -> Host:
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parts = host.split("?", maxsplit=1)
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endpoint, maybe_options = parts if len(parts) == 2 else (parts[0], "")
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parts = endpoint.split("@")
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match len(parts):
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case 2:
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user, host_port = parts
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case 1:
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user, host_port = "", parts[0]
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case _:
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msg = f"Invalid host, got `{host}` but expected something like `[user@]hostname[:port]`"
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raise ClanError(msg)
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# Make this check now rather than failing with a `ValueError`
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# when looking up the port from the `urlsplit` result below:
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if host_port.count(":") > 1 and not re.match(r".*\[.*]", host_port):
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msg = f"Invalid hostname: {host}. IPv6 addresses must be enclosed in brackets , e.g. [::1]"
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raise ClanError(msg)
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options: dict[str, str] = {}
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for o in maybe_options.split("&"):
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if len(o) == 0:
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continue
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parts = o.split("=", maxsplit=1)
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if len(parts) != 2:
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msg = (
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f"Invalid option in host `{host}`: option `{o}` does not have "
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f"a value (i.e. expected something like `name=value`)"
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)
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raise ClanError(msg)
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name, value = parts
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options[name] = value
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result = urllib.parse.urlsplit(f"//{host_port}")
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if not result.hostname:
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msg = f"Invalid host, got `{host}` but expected something like `[user@]hostname[:port]`"
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raise ClanError(msg)
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hostname = result.hostname
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port = result.port
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return Host(
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hostname,
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user=user,
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port=port,
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private_key=private_key,
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host_key_check=host_key_check,
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command_prefix=machine_name,
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forward_agent=forward_agent,
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meta={} if meta is None else meta.copy(),
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ssh_options=options,
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)
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