agentpack/
machine.rs

1use std::process::Command;
2
3use anyhow::Context as _;
4
5pub fn detect_machine_id() -> anyhow::Result<String> {
6    if let Ok(val) = std::env::var("AGENTPACK_MACHINE_ID") {
7        let id = normalize_machine_id(&val);
8        if !id.is_empty() {
9            return Ok(id);
10        }
11    }
12
13    if let Ok(val) = std::env::var("HOSTNAME") {
14        let id = normalize_machine_id(&val);
15        if !id.is_empty() {
16            return Ok(id);
17        }
18    }
19
20    if let Ok(val) = std::env::var("COMPUTERNAME") {
21        let id = normalize_machine_id(&val);
22        if !id.is_empty() {
23            return Ok(id);
24        }
25    }
26
27    let out = Command::new("hostname").output().context("run hostname")?;
28    if out.status.success() {
29        let raw = String::from_utf8_lossy(&out.stdout);
30        let id = normalize_machine_id(&raw);
31        if !id.is_empty() {
32            return Ok(id);
33        }
34    }
35
36    Ok("unknown".to_string())
37}
38
39pub fn normalize_machine_id(s: &str) -> String {
40    let raw = s.trim().to_lowercase();
41    let mut out = String::new();
42    let mut last_dash = false;
43    for ch in raw.chars() {
44        let ok = ch.is_ascii_alphanumeric() || ch == '-' || ch == '_';
45        let normalized = if ok {
46            ch
47        } else if !last_dash {
48            '-'
49        } else {
50            continue;
51        };
52
53        last_dash = normalized == '-';
54        out.push(normalized);
55    }
56    out.trim_matches('-').to_string()
57}
agentpack/machine.rs

agentpack/
machine.rs
