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Co-authored-by: Antoine C <hi@acolombier.dev>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,137 @@ | ||
| // Copyright 2024 System76 <info@system76.com> | ||
| // SPDX-License-Identifier: GPL-3.0-only | ||
|
|
||
| use std::io::{BufRead, BufReader}; | ||
| use std::process::Stdio; | ||
| use std::str::FromStr; | ||
|
|
||
| pub fn passwd(range: (u64, u64)) -> Vec<PasswdUser> { | ||
| let spawn_res = std::process::Command::new("getent") | ||
| .arg("passwd") | ||
| .stdin(Stdio::null()) | ||
| .stderr(Stdio::null()) | ||
| .stdout(Stdio::piped()) | ||
| .spawn(); | ||
|
|
||
| let mut users = Vec::new(); | ||
|
|
||
| if let Ok(mut child) = spawn_res { | ||
| let stdout = child.stdout.take().unwrap(); | ||
| let mut reader = BufReader::new(stdout); | ||
| let mut line = String::new(); | ||
|
|
||
| loop { | ||
| line.clear(); | ||
| match reader.read_line(&mut line) { | ||
| Ok(0) | Err(_) => break, | ||
| _ => (), | ||
| } | ||
|
|
||
| if let Ok(user) = line.trim().parse::<PasswdUser>() { | ||
| if user.uid >= range.0 && user.uid <= range.1 { | ||
| users.push(user); | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| users | ||
| } | ||
|
|
||
| pub fn group() -> Vec<Group> { | ||
| let spawn_res = std::process::Command::new("getent") | ||
| .arg("group") | ||
| .stdin(Stdio::null()) | ||
| .stderr(Stdio::null()) | ||
| .stdout(Stdio::piped()) | ||
| .spawn(); | ||
|
|
||
| let mut groups = Vec::new(); | ||
|
|
||
| if let Ok(mut child) = spawn_res { | ||
| let stdout = child.stdout.take().unwrap(); | ||
| let mut reader = BufReader::new(stdout); | ||
| let mut line = String::new(); | ||
|
|
||
| loop { | ||
| line.clear(); | ||
| match reader.read_line(&mut line) { | ||
| Ok(0) | Err(_) => break, | ||
| _ => (), | ||
| } | ||
|
|
||
| if let Ok(group) = line.trim().parse::<Group>() { | ||
| groups.push(group); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| groups | ||
| } | ||
|
|
||
| #[derive(Debug, Clone, Eq, PartialEq)] | ||
| pub struct Group { | ||
| pub uid: u64, | ||
| pub name: Box<str>, | ||
| pub users: Vec<Box<str>>, | ||
| } | ||
|
|
||
| impl FromStr for Group { | ||
| type Err = (); | ||
|
|
||
| fn from_str(line: &str) -> Result<Self, Self::Err> { | ||
| let mut fields = line.split(':'); | ||
|
|
||
| Ok(Group { | ||
| name: fields.next().ok_or(())?.into(), | ||
| uid: fields.nth(1).ok_or(())?.parse().map_err(|_| ())?, | ||
| users: fields | ||
| .next() | ||
| .ok_or(())? | ||
| .split(',') | ||
| .map(Box::from) | ||
| .collect::<Vec<_>>(), | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| #[derive(Debug, Clone, Eq, PartialEq)] | ||
| pub struct PasswdUser { | ||
| pub uid: u64, | ||
| pub username: Box<str>, | ||
| pub full_name: Box<str>, | ||
| } | ||
|
|
||
| impl FromStr for PasswdUser { | ||
| type Err = (); | ||
|
|
||
| fn from_str(line: &str) -> Result<Self, Self::Err> { | ||
| let mut fields = line.split(':'); | ||
|
|
||
| Ok(PasswdUser { | ||
| username: fields.next().ok_or(())?.into(), | ||
| uid: fields.nth(1).ok_or(())?.parse().map_err(|_| ())?, | ||
| full_name: fields.nth(1).ok_or(())?.split(',').next().ok_or(())?.into(), | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| #[cfg(test)] | ||
| mod tests { | ||
| use super::PasswdUser; | ||
|
|
||
| #[test] | ||
| fn passwd() { | ||
| const EXAMPLE: &str = | ||
| "speech-dispatcher:x:109:29:Speech Dispatcher,,,:/run/speech-dispatcher:/bin/false"; | ||
|
|
||
| assert_eq!( | ||
| EXAMPLE.parse::<PasswdUser>(), | ||
| Ok(PasswdUser { | ||
| username: Box::from("speech-dispatcher"), | ||
| uid: 109, | ||
| full_name: Box::from("Speech Dispatcher") | ||
| }) | ||
| ); | ||
| } | ||
| } |
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