mirror of
https://github.com/uutils/coreutils
synced 2024-12-15 07:42:48 +00:00
291 lines
8.8 KiB
Rust
291 lines
8.8 KiB
Rust
// This file is part of the uutils coreutils package.
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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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// spell-checker:ignore STRINGSTRING INTEGERINTEGER FILEFILE
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#![no_main]
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use libfuzzer_sys::fuzz_target;
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use uu_test::uumain;
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use rand::seq::SliceRandom;
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use rand::Rng;
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use std::ffi::OsString;
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use libc::{dup, dup2, STDOUT_FILENO};
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use std::process::Command;
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#[derive(PartialEq, Debug, Clone)]
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enum ArgType {
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STRING,
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STRINGSTRING,
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INTEGER,
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INTEGERINTEGER,
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FILE,
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FILEFILE,
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// Add any other types as needed
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}
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fn run_gnu_test(args: &[OsString]) -> Result<(String, i32), std::io::Error> {
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let mut command = Command::new("test");
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for arg in args {
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command.arg(arg);
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}
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let output = command.output()?;
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let exit_status = output.status.code().unwrap_or(-1); // Capture the exit status code
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Ok((
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String::from_utf8_lossy(&output.stdout).to_string(),
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exit_status,
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))
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}
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fn generate_random_string(max_length: usize) -> String {
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let mut rng = rand::thread_rng();
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let valid_utf8: Vec<char> = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
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.chars()
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.collect();
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let invalid_utf8 = [0xC3, 0x28]; // Invalid UTF-8 sequence
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let mut result = String::new();
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for _ in 0..rng.gen_range(1..=max_length) {
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if rng.gen_bool(0.9) {
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let ch = valid_utf8.choose(&mut rng).unwrap();
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result.push(*ch);
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} else {
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let ch = invalid_utf8.choose(&mut rng).unwrap();
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if let Some(c) = char::from_u32(*ch as u32) {
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result.push(c);
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}
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}
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}
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result
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}
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#[derive(Debug, Clone)]
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struct TestArg {
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arg: String,
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arg_type: ArgType,
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}
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fn generate_random_path(rng: &mut dyn rand::RngCore) -> &'static str {
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match rng.gen_range(0..=3) {
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0 => "/dev/null",
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1 => "/dev/random",
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2 => "/tmp",
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_ => "/dev/urandom",
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}
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}
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fn generate_test_args() -> Vec<TestArg> {
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vec![
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TestArg {
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arg: "-z".to_string(),
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arg_type: ArgType::STRING,
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},
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TestArg {
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arg: "-n".to_string(),
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arg_type: ArgType::STRING,
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},
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TestArg {
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arg: "=".to_string(),
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arg_type: ArgType::STRINGSTRING,
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},
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TestArg {
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arg: "!=".to_string(),
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arg_type: ArgType::STRINGSTRING,
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},
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TestArg {
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arg: "-eq".to_string(),
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arg_type: ArgType::INTEGERINTEGER,
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},
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TestArg {
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arg: "-ne".to_string(),
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arg_type: ArgType::INTEGERINTEGER,
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},
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TestArg {
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arg: "-gt".to_string(),
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arg_type: ArgType::INTEGERINTEGER,
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},
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TestArg {
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arg: "-ge".to_string(),
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arg_type: ArgType::INTEGERINTEGER,
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},
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TestArg {
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arg: "-lt".to_string(),
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arg_type: ArgType::INTEGERINTEGER,
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},
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TestArg {
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arg: "-le".to_string(),
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arg_type: ArgType::INTEGERINTEGER,
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},
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TestArg {
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arg: "-f".to_string(),
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arg_type: ArgType::FILE,
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},
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TestArg {
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arg: "-d".to_string(),
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arg_type: ArgType::FILE,
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},
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TestArg {
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arg: "-e".to_string(),
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arg_type: ArgType::FILE,
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},
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TestArg {
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arg: "-ef".to_string(),
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arg_type: ArgType::FILEFILE,
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},
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TestArg {
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arg: "-nt".to_string(),
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arg_type: ArgType::FILEFILE,
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},
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]
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}
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fn generate_test_arg() -> String {
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let mut rng = rand::thread_rng();
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let test_args = generate_test_args();
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let mut arg = String::new();
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let choice = rng.gen_range(0..=5);
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match choice {
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0 => {
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arg.push_str(&rng.gen_range(-100..=100).to_string());
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}
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1 | 2 | 3 => {
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let test_arg = test_args
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.choose(&mut rng)
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.expect("Failed to choose a random test argument");
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if test_arg.arg_type == ArgType::INTEGER {
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arg.push_str(&format!(
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"{} {} {}",
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&rng.gen_range(-100..=100).to_string(),
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test_arg.arg,
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&rng.gen_range(-100..=100).to_string()
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));
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} else if test_arg.arg_type == ArgType::STRINGSTRING {
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let random_str = generate_random_string(rng.gen_range(1..=10));
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let random_str2 = generate_random_string(rng.gen_range(1..=10));
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arg.push_str(&format!(
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"{} {} {}",
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&random_str, test_arg.arg, &random_str2
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));
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} else if test_arg.arg_type == ArgType::STRING {
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let random_str = generate_random_string(rng.gen_range(1..=10));
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arg.push_str(&format!("{} {}", test_arg.arg, &random_str));
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} else if test_arg.arg_type == ArgType::FILEFILE {
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let path = generate_random_path(&mut rng);
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let path2 = generate_random_path(&mut rng);
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arg.push_str(&format!("{} {} {}", path, test_arg.arg, path2));
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} else if test_arg.arg_type == ArgType::FILE {
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let path = generate_random_path(&mut rng);
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arg.push_str(&format!("{} {}", test_arg.arg, path));
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}
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}
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4 => {
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let random_str = generate_random_string(rng.gen_range(1..=10));
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arg.push_str(&random_str);
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}
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_ => {
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let path = generate_random_path(&mut rng);
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let file_test_args: Vec<TestArg> = test_args
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.iter()
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.filter(|ta| ta.arg_type == ArgType::FILE)
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.cloned()
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.collect();
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if let Some(test_arg) = file_test_args.choose(&mut rng) {
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arg.push_str(&format!("{}{}", test_arg.arg, path));
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}
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}
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}
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arg
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}
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fuzz_target!(|_data: &[u8]| {
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let mut rng = rand::thread_rng();
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let max_args = rng.gen_range(1..=6);
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let mut args = vec![OsString::from("test")];
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let uumain_exit_status;
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for _ in 0..max_args {
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args.push(OsString::from(generate_test_arg()));
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}
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// Save the original stdout file descriptor
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let original_stdout_fd = unsafe { dup(STDOUT_FILENO) };
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println!("Running test {:?}", &args[1..]);
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// Create a pipe to capture stdout
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let mut pipe_fds = [-1; 2];
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unsafe { libc::pipe(pipe_fds.as_mut_ptr()) };
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{
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// Redirect stdout to the write end of the pipe
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unsafe { dup2(pipe_fds[1], STDOUT_FILENO) };
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// Run uumain with the provided arguments
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uumain_exit_status = uumain(args.clone().into_iter());
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// Restore original stdout
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unsafe { dup2(original_stdout_fd, STDOUT_FILENO) };
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unsafe { libc::close(original_stdout_fd) };
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}
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// Close the write end of the pipe
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unsafe { libc::close(pipe_fds[1]) };
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// Read captured output from the read end of the pipe
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let mut captured_output = Vec::new();
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let mut read_buffer = [0; 1024];
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loop {
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let bytes_read = unsafe {
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libc::read(
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pipe_fds[0],
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read_buffer.as_mut_ptr() as *mut libc::c_void,
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read_buffer.len(),
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)
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};
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if bytes_read <= 0 {
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break;
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}
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captured_output.extend_from_slice(&read_buffer[..bytes_read as usize]);
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}
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// Close the read end of the pipe
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unsafe { libc::close(pipe_fds[0]) };
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// Convert captured output to a string
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let my_output = String::from_utf8_lossy(&captured_output)
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.to_string()
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.trim()
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.to_owned();
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// Run GNU test with the provided arguments and compare the output
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match run_gnu_test(&args[1..]) {
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Ok((gnu_output, gnu_exit_status)) => {
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let gnu_output = gnu_output.trim().to_owned();
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println!("gnu_exit_status {}", gnu_exit_status);
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println!("uumain_exit_status {}", uumain_exit_status);
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if my_output != gnu_output || uumain_exit_status != gnu_exit_status {
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println!("Discrepancy detected!");
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println!("Test: {:?}", &args[1..]);
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println!("My output: {}", my_output);
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println!("GNU output: {}", gnu_output);
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println!("My exit status: {}", uumain_exit_status);
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println!("GNU exit status: {}", gnu_exit_status);
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panic!();
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} else {
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println!(
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"Outputs and exit statuses matched for expression {:?}",
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&args[1..]
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);
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}
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}
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Err(_) => {
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println!("GNU test execution failed for expression {:?}", &args[1..]);
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}
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}
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});
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