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|
mod args;
mod attach;
mod host;
mod process;
mod restart_policy;
mod saved;
pub(crate) use args::*;
pub(crate) use attach::*;
pub(crate) use host::run_remote_client_bridge;
pub(crate) use saved::*;
pub(crate) fn run_remote_api_bridge(args: &[String]) -> std::io::Result<()> {
match args {
[] => {
let path = crate::api::socket_path();
let stream = crate::ipc::connect_local_stream(&path).map_err(|error| {
std::io::Error::new(
error.kind(),
format!(
"failed to connect to remote Herdr API socket {}: {error}",
path.display()
),
)
})?;
crate::platform::forward_remote_bridge_stdio(stream, false)
}
[flag] if flag == "--check" => {
println!("herdr-api-bridge-v1");
Ok(())
}
_ => Err(std::io::Error::new(
std::io::ErrorKind::InvalidInput,
"usage: herdr remote-api-bridge [--check]",
)),
}
}
pub(crate) fn print_saved_ssh_error_hint(err: &std::io::Error, target: &str) {
if is_remote_host_key_error(err) {
eprintln!(
"hint: saved machines use strict host-key checking; add the host key to the configured known_hosts file, then retry."
);
} else {
print_remote_error_hint(err, target);
}
}
pub(crate) fn print_remote_error_hint(err: &std::io::Error, target: &str) {
if is_remote_auth_error(err) {
eprintln!(
"hint: verify SSH access first with `{}`.",
ssh_check_command(target)
);
eprintln!(
"hint: if your SSH key has a passphrase, load it into ssh-agent with `ssh-add` before running `herdr --remote`."
);
}
}
fn is_remote_host_key_error(err: &std::io::Error) -> bool {
let message = err.to_string().to_ascii_lowercase();
message.contains("host key verification failed")
|| message.contains("remote host identification has changed")
}
fn is_remote_auth_error(err: &std::io::Error) -> bool {
let message = err.to_string();
message.contains("Permission denied")
&& (message.contains("(publickey")
|| message.contains("(keyboard-interactive")
|| message.contains("(password"))
}
fn ssh_check_command(target: &str) -> String {
format!("ssh {}", shell_quote(target))
}
fn shell_quote(value: &str) -> String {
if !value.is_empty()
&& value.chars().all(|ch| {
ch.is_ascii_alphanumeric()
|| matches!(
ch,
'@' | '%' | '_' | '+' | '=' | ':' | ',' | '.' | '/' | '-'
)
})
{
return value.to_string();
}
format!("'{}'", value.replace('\'', "'\\''"))
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn remote_host_key_error_matches_ssh_diagnostics() {
for message in [
"Host key verification failed.",
"REMOTE HOST IDENTIFICATION HAS CHANGED!",
] {
assert!(is_remote_host_key_error(&std::io::Error::other(message)));
}
assert!(!is_remote_host_key_error(&std::io::Error::other(
"server closed connection"
)));
}
#[test]
fn remote_auth_error_matches_ssh_auth_denied() {
let err = std::io::Error::other(
"remote platform detection failed: user@host: Permission denied (publickey).",
);
assert!(is_remote_auth_error(&err));
}
#[test]
fn remote_auth_error_matches_keyboard_interactive_denied() {
let err = std::io::Error::other(
"remote server status failed: user@host: Permission denied (keyboard-interactive).",
);
assert!(is_remote_auth_error(&err));
}
#[test]
fn remote_auth_error_ignores_non_auth_errors() {
let err = std::io::Error::other("remote platform detection failed: unsupported platform");
assert!(!is_remote_auth_error(&err));
}
#[test]
fn ssh_check_command_quotes_remote_target() {
assert_eq!(ssh_check_command("host name"), "ssh 'host name'");
}
}
|
