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use std::io::BufRead;
pub fn hostname() -> std::result::Result<std::string::String, std::io::Error> {
let h = std::fs::read_to_string("/proc/sys/kernel/hostname")?;
Ok(h.trim().to_string())
}
#[test]
fn test_hostname() {
let hostname__ = match std::process::Command::new("hostname").output() {
Ok(s) => {
let output = std::string::String::from_utf8(s.stdout).unwrap();
output.trim().to_string()
}
Err(e) => panic!(e),
};
assert_eq!(hostname__, hostname().unwrap());
}
pub fn username() -> std::result::Result<std::string::String, std::io::Error> {
let uid = unsafe { libc::getuid().to_string() };
let file = std::fs::File::open("/etc/passwd")?;
let reader = std::io::BufReader::new(file);
for line in reader.lines() {
let l = line?;
let parts: Vec<&str> = l.split(':').collect();
if uid == parts[2] {
return Ok(parts[0].to_string());
}
}
Ok(uid)
}
#[test]
fn test_username() {
let username__ = match std::process::Command::new("whoami").output() {
Ok(s) => {
let output = std::string::String::from_utf8(s.stdout).unwrap();
output.trim().to_string()
}
Err(e) => panic!(e),
};
assert_eq!(username__, username().unwrap());
}
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