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termproxy: fix parsing free-form listen-port argument

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While commit d8e9c1a ("termproxy: fix the command line help text")
corrected the usage text to match the behavior and was a good stop-gap
it simply is to easy to make this work as most CLI tools do and most
user expect.

Switch to parsing all options first and only then get the free-form
listen-port(-or-fd) argument.

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
This commit is contained in:
Thomas Lamprecht 2024-07-25 17:17:35 +02:00
parent 69400e983e
commit 4b8568cb4f
1 changed files with 27 additions and 17 deletions
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44
termproxy/src/cli.rs
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@ -4,7 +4,7 @@ use std::os::fd::RawFd;
use anyhow::{bail, Result};
const CMD_HELP: &str = "\
Usage: proxmox-termproxy <listen-port> [OPTIONS] --path <path> -- <terminal-cmd>...
Usage: proxmox-termproxy [OPTIONS] --path <path> <listen-port> -- <terminal-cmd>...
Arguments:
<listen-port> Port or file descriptor to listen for TCP connections
@ -86,23 +86,33 @@ impl Options {
bail!("missing terminal command or -- option-end marker, see '-h' for usage");
}
let terminal_command = terminal_command.unwrap(); // checked above
let port_as_fd = args.contains("--port-as-fd");
let acl_path = args.value_from_str("--path")?;
let acl_permission = args.opt_value_from_str("--perm")?;
let api_daemon_address = {
let auth_port: Option<u16> = args.opt_value_from_str("--authport")?;
let auth_socket: Option<String> = args.opt_value_from_str("--auth-socket")?;
match (auth_port, auth_socket) {
(Some(auth_port), None) => DaemonAddress::Port(auth_port),
(None, Some(auth_socket)) => DaemonAddress::UnixSocket(auth_socket),
(None, None) => DaemonAddress::Port(85),
(Some(_), Some(_)) => bail!(
"conflicting options: --auth-port and --auth-socket are mutually exclusive."
),
}
};
// NOTE: free-form arguments are literally the next unused argument, so only get them after
// all options got parsed
let auth_port_or_fd = args.free_from_str()?;
let options = Self {
terminal_command: terminal_command.unwrap(), // checked above
listen_port: PortOrFd::from_cli(args.free_from_str()?, args.contains("--port-as-fd"))?,
api_daemon_address: {
let authport: Option<u16> = args.opt_value_from_str("--authport")?;
let authsocket: Option<String> = args.opt_value_from_str("--authsocket")?;
match (authport, authsocket) {
(Some(authport), None) => DaemonAddress::Port(authport),
(None, Some(authsocket)) => DaemonAddress::UnixSocket(authsocket),
(None, None) => DaemonAddress::Port(85),
(Some(_), Some(_)) => bail!(
"conflicting options: --authport and --authsocket are mutually exclusive."
),
}
},
acl_path: args.value_from_str("--path")?,
acl_permission: args.opt_value_from_str("--perm")?,
terminal_command,
listen_port: PortOrFd::from_cli(auth_port_or_fd, port_as_fd)?,
api_daemon_address,
acl_path,
acl_permission,
};
if !args.finish().is_empty() {