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//! Expand nmap-style glued short options (`-sS`, `-PS80`, `-T4`) before clap parsing.
/// Expand argv for nmaprs so clap can parse long-style flags consistently.
pub fn expand_nmap_style_argv<I>(args: I) -> Vec<String>
where
I: IntoIterator<Item = String>,
{
let args: Vec<String> = args.into_iter().collect();
if args.is_empty() {
return args;
}
let mut out: Vec<String> = Vec::with_capacity(args.len() + 8);
out.push(args[0].clone());
let mut i = 1usize;
while i < args.len() {
let a = &args[i];
// -sL list scan, -sn ping scan (no port scan)
if a.as_str() == "-sL" {
out.push("--sL".to_string());
i += 1;
continue;
}
if a.as_str() == "-sn" {
out.push("--sn".to_string());
i += 1;
continue;
}
// -sO IP protocol scan (must precede generic -sX → --scan-type)
if a.as_str() == "-sO" {
out.push("--sO".to_string());
i += 1;
continue;
}
// -sI <zombie> (idle scan — parsed for CLI parity)
if a.as_str() == "-sI" {
out.push("--sI".to_string());
i += 1;
if i < args.len() {
let n = &args[i];
if !n.starts_with('-') {
out.push(n.clone());
i += 1;
}
}
continue;
}
// -iL / -iR (nmap target input)
if a.as_str() == "-iL" {
out.push("--iL".to_string());
i += 1;
continue;
}
if a.as_str() == "-iR" {
out.push("--iR".to_string());
i += 1;
continue;
}
// -oN / -oX / -oS / -oG / -oA
if a.len() == 3 && a.starts_with("-o") {
let k = a.as_bytes()[2] as char;
if matches!(k, 'N' | 'X' | 'S' | 'G' | 'A') {
out.push(format!("--o{k}"));
i += 1;
continue;
}
}
if let Some(rest) = a.strip_prefix('-') {
if rest.is_empty() {
out.push(a.clone());
i += 1;
continue;
}
// Long options pass through
if rest.starts_with('-') {
out.push(a.clone());
i += 1;
continue;
}
// -sX: overloaded in nmap — scan types, -sV version, -sC script default
if rest.len() == 2 && rest.starts_with('s') {
let ch = rest.as_bytes()[1] as char;
if ch.is_ascii_alphabetic() {
match ch {
'V' => {
out.push("--version-scan".to_string());
i += 1;
continue;
}
'C' => {
out.push("--script-default".to_string());
i += 1;
continue;
}
_ => {
out.push("--scan-type".to_string());
out.push(ch.to_string());
i += 1;
continue;
}
}
}
}
// -Pn
if rest == "Pn" {
out.push("--no-ping".to_string());
i += 1;
continue;
}
// -PE / -PP / -PM (no port list)
if matches!(rest, "PE" | "PP" | "PM") {
let letter = rest.as_bytes()[1] as char;
out.push(format!("--ping-{letter}"));
i += 1;
continue;
}
// -PO [protocol list] — before generic -P* so "PO" is not mistaken for --ping-O
if rest == "PO" || rest.starts_with("PO") {
out.push("--ping-ip-proto".to_string());
if rest.len() > 2 {
out.push(rest[2..].to_string());
} else {
// Nmap default IP-protocol ping list when -PO is given alone
out.push("1,2,4".to_string());
}
i += 1;
continue;
}
// -PS [ports], -PA, -PU, -PY
if rest.len() >= 2 && rest.starts_with('P') {
let kind = rest.as_bytes()[1] as char;
if matches!(kind, 'S' | 'A' | 'U' | 'Y') {
if rest.len() == 2 {
out.push(format!("--ping-{kind}"));
i += 1;
continue;
}
// -PS80 or -PS22,80
let tail = &rest[2..];
out.push(format!("--ping-{kind}"));
out.push(tail.to_string());
i += 1;
continue;
}
}
// -T0 .. -T5
if rest.len() == 2 && rest.starts_with('T') {
let d = rest.as_bytes()[1];
if d.is_ascii_digit() && (d - b'0') <= 5 {
out.push("--timing".to_string());
out.push((d - b'0').to_string());
i += 1;
continue;
}
}
// -v, -vv, -vvv
if rest.chars().all(|c| c == 'v') && !rest.is_empty() && rest.len() <= 5 {
out.push(format!("--verbosity={}", rest.len()));
i += 1;
continue;
}
// -d, -dd
if rest.chars().all(|c| c == 'd') && !rest.is_empty() && rest.len() <= 5 {
out.push(format!("--debug={}", rest.len()));
i += 1;
continue;
}
}
out.push(a.clone());
i += 1;
}
out
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn expands_scan_and_timing() {
let v = expand_nmap_style_argv(vec![
"nmaprs".into(),
"-sT".into(),
"-T4".into(),
"host".into(),
]);
assert_eq!(
v,
vec!["nmaprs", "--scan-type", "T", "--timing", "4", "host"]
);
}
#[test]
fn expands_pn_and_ps_ports() {
let v = expand_nmap_style_argv(vec!["nmaprs".into(), "-Pn".into(), "-PS80,443".into()]);
assert_eq!(v, vec!["nmaprs", "--no-ping", "--ping-S", "80,443"]);
}
#[test]
fn expands_so_to_long_flag_not_scan_type_o() {
let v = expand_nmap_style_argv(vec!["nmaprs".into(), "-sO".into(), "127.0.0.1".into()]);
assert_eq!(v, vec!["nmaprs", "--sO", "127.0.0.1"]);
}
#[test]
fn expands_po_default_protos() {
let v = expand_nmap_style_argv(vec!["nmaprs".into(), "-PO".into(), "host".into()]);
assert_eq!(v, vec!["nmaprs", "--ping-ip-proto", "1,2,4", "host"]);
}
#[test]
fn expands_po_with_tail() {
let v = expand_nmap_style_argv(vec!["nmaprs".into(), "-PO6".into()]);
assert_eq!(v, vec!["nmaprs", "--ping-ip-proto", "6"]);
}
}