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fuzz: create a function run_gnu_cmd to deduplicate the code

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This commit is contained in:
Sylvestre Ledru 2023-09-28 21:48:34 +02:00
parent aa0437c28a
commit e6f9e358d4
3 changed files with 34 additions and 44 deletions
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28
fuzz/fuzz_targets/fuzz_expr.rs
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@ -12,35 +12,11 @@ use rand::seq::SliceRandom;
use rand::Rng;
use std::ffi::OsString;
use std::process::Command;
mod fuzz_common;
use crate::fuzz_common::generate_and_run_uumain;
use crate::fuzz_common::is_gnu_cmd;
use crate::fuzz_common::{generate_and_run_uumain, run_gnu_cmd};
static CMD_PATH: &str = "expr";
fn run_gnu_expr(args: &[OsString]) -> Result<(String, i32), std::io::Error> {
is_gnu_cmd(CMD_PATH)?; // Check if it's a GNU implementation
let mut command = Command::new(CMD_PATH);
for arg in args {
command.arg(arg);
}
let output = command.output()?;
let exit_code = output.status.code().unwrap_or(-1);
if output.status.success() {
Ok((
String::from_utf8_lossy(&output.stdout).to_string(),
exit_code,
))
} else {
Err(std::io::Error::new(
std::io::ErrorKind::Other,
format!("GNU expr execution failed with exit code {}", exit_code),
))
}
}
fn generate_random_string(max_length: usize) -> String {
let mut rng = rand::thread_rng();
let valid_utf8: Vec<char> = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
@ -111,7 +87,7 @@ fuzz_target!(|_data: &[u8]| {
let (rust_output, uumain_exit_code) = generate_and_run_uumain(&mut args, uumain);
// Run GNU expr with the provided arguments and compare the output
match run_gnu_expr(&args[1..]) {
match run_gnu_cmd(CMD_PATH, &args[1..], true) {
Ok((gnu_output, gnu_exit_code)) => {
let gnu_output = gnu_output.trim().to_owned();
if uumain_exit_code != gnu_exit_code {