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// This file is part of the uutils coreutils package.
//
// For the full copyright and license information, please view the LICENSE
// file that was distributed with this source code.
#![no_main]
use libfuzzer_sys::fuzz_target;
use uu_echo::uumain;
use rand::Rng;
use rand::prelude::IndexedRandom;
use std::ffi::OsString;
use uufuzz::CommandResult;
use uufuzz::{compare_result, generate_and_run_uumain, generate_random_string, run_gnu_cmd};
static CMD_PATH: &str = "echo";
fn generate_echo() -> String {
let mut rng = rand::rng();
let mut echo_str = String::new();
// Randomly decide whether to include options
let include_n = rng.random_bool(0.1); // 10% chance
let include_e = rng.random_bool(0.1); // 10% chance
#[allow(non_snake_case)]
let include_E = rng.random_bool(0.1); // 10% chance
if include_n {
echo_str.push_str("-n ");
}
if include_e {
echo_str.push_str("-e ");
}
if include_E {
echo_str.push_str("-E ");
}
// Add a random string
echo_str.push_str(&generate_random_string(rng.random_range(1..=10)));
// Include escape sequences if -e is enabled
if include_e {
// Add a 10% chance of including an escape sequence
if rng.random_bool(0.1) {
echo_str.push_str(&generate_escape_sequence(&mut rng));
}
}
echo_str
}
fn generate_escape_sequence(rng: &mut impl Rng) -> String {
let escape_sequences = [
"\\\\", "\\a", "\\b", "\\c", "\\e", "\\f", "\\n", "\\r", "\\t", "\\v", "\\0NNN", "\\xHH",
];
// \0NNN and \xHH need more work
escape_sequences.choose(rng).unwrap().to_string()
}
fuzz_target!(|_data: &[u8]| {
let echo_input = generate_echo();
let mut args = vec![OsString::from("echo")];
args.extend(echo_input.split_whitespace().map(OsString::from));
let rust_result = generate_and_run_uumain(&args, uumain, None);
let gnu_result = match run_gnu_cmd(CMD_PATH, &args[1..], false, None) {
Ok(result) => result,
Err(error_result) => {
eprintln!("Failed to run GNU command:");
eprintln!("Stderr: {}", error_result.stderr);
eprintln!("Exit Code: {}", error_result.exit_code);
CommandResult {
stdout: String::new(),
stderr: error_result.stderr,
exit_code: error_result.exit_code,
}
}
};
compare_result(
"echo",
&format!("{:?}", &args[1..]),
None,
&rust_result,
&gnu_result,
true,
);
});
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