Enumerate all of the listening processes and their ports
This commit is contained in:
John Doty
commit
bfa55d1492
4 changed files with 493 additions and 0 deletions
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.gitignore
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Cargo.lock
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|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_gnu"
|
||||
version = "0.36.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "4dcd171b8776c41b97521e5da127a2d86ad280114807d0b2ab1e462bc764d9e1"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_msvc"
|
||||
version = "0.36.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "c811ca4a8c853ef420abd8592ba53ddbbac90410fab6903b3e79972a631f7680"
|
||||
9
Cargo.toml
Normal file
9
Cargo.toml
Normal file
|
|
@ -0,0 +1,9 @@
|
|||
[package]
|
||||
name = "fwd"
|
||||
version = "0.1.0"
|
||||
edition = "2021"
|
||||
|
||||
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
|
||||
|
||||
[dependencies]
|
||||
procfs = "0.14.1"
|
||||
66
src/main.rs
Normal file
66
src/main.rs
Normal file
|
|
@ -0,0 +1,66 @@
|
|||
use procfs::process::FDTarget;
|
||||
use std::collections::HashMap;
|
||||
|
||||
struct Entry {
|
||||
port: u16,
|
||||
desc: String,
|
||||
}
|
||||
|
||||
fn get_entries() -> procfs::ProcResult<Vec<Entry>> {
|
||||
let all_procs = procfs::process::all_processes()?;
|
||||
|
||||
// build up a map between socket inodes and process stat info. Ignore any
|
||||
// error we encounter as it probably means we have no access to that
|
||||
// process or something.
|
||||
let mut map: HashMap<u64, String> = HashMap::new();
|
||||
for p in all_procs {
|
||||
if let Ok(process) = p {
|
||||
if !process.is_alive() {
|
||||
continue; // Ignore zombies.
|
||||
}
|
||||
|
||||
if let (Ok(fds), Ok(cmd)) = (process.fd(), process.cmdline()) {
|
||||
for fd in fds {
|
||||
if let Ok(fd) = fd {
|
||||
if let FDTarget::Socket(inode) = fd.target {
|
||||
map.insert(inode, cmd.join(" "));
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
let mut h: HashMap<u16, Entry> = HashMap::new();
|
||||
|
||||
// Go through all the listening IPv4 and IPv6 sockets and take the first
|
||||
// instance of listening on each port *if* the address is loopback or
|
||||
// unspecified. (TODO: Do we want this restriction really?)
|
||||
let tcp = procfs::net::tcp()?;
|
||||
let tcp6 = procfs::net::tcp6()?;
|
||||
for tcp_entry in tcp.into_iter().chain(tcp6) {
|
||||
if tcp_entry.state == procfs::net::TcpState::Listen
|
||||
&& (tcp_entry.local_address.ip().is_loopback()
|
||||
|| tcp_entry.local_address.ip().is_unspecified())
|
||||
&& !h.contains_key(&tcp_entry.local_address.port())
|
||||
{
|
||||
if let Some(cmd) = map.get(&tcp_entry.inode) {
|
||||
h.insert(
|
||||
tcp_entry.local_address.port(),
|
||||
Entry {
|
||||
port: tcp_entry.local_address.port(),
|
||||
desc: cmd.clone(),
|
||||
},
|
||||
);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
Ok(h.into_values().collect())
|
||||
}
|
||||
|
||||
fn main() {
|
||||
for e in get_entries().unwrap() {
|
||||
println!("{}: {}", e.port, e.desc);
|
||||
}
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue