mirror of
https://github.com/uutils/coreutils
synced 2024-12-16 16:22:40 +00:00
73 lines
1.7 KiB
Rust
73 lines
1.7 KiB
Rust
#[crate_id(name="whoami", version="1.0.0", author="KokaKiwi")];
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/*
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* This file is part of the uutils coreutils package.
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*
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* (c) Jordi Boggiano <j.boggiano@seld.be>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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/* last synced with: whoami (GNU coreutils) 8.21 */
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extern mod extra;
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use std::os;
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use std::str;
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use std::libc;
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use extra::getopts::groups;
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struct c_passwd {
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pw_name: *libc::c_char,
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// Maybe I should put here others struct members, but...Well, maybe.
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}
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extern {
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pub fn geteuid() -> libc::c_int;
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pub fn getpwuid(uid: libc::c_int) -> *c_passwd;
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}
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unsafe fn getusername() -> ~str {
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let passwd: *c_passwd = getpwuid(geteuid());
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let pw_name: *libc::c_char = (*passwd).pw_name;
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let name = str::raw::from_c_str(pw_name);
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name
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}
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fn main() {
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let args = os::args();
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let program = args[0].as_slice();
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let opts = ~[
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groups::optflag("h", "help", "display this help and exit"),
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groups::optflag("V", "version", "output version information and exit"),
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];
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let matches = match groups::getopts(args.tail(), opts) {
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Ok(m) => m,
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Err(f) => fail!(f.to_err_msg()),
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};
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if matches.opt_present("help") {
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println("whoami 1.0.0");
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println("");
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println("Usage:");
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println!(" {:s}", program);
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println("");
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print(groups::usage("print effective userid", opts));
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return;
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}
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if matches.opt_present("version") {
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println("whoami 1.0.0");
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return;
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}
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exec();
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}
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pub fn exec() {
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unsafe {
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let username = getusername();
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println!("{:s}", username);
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}
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}
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