fuzz: start fuzzing env & tr

fuzz/fuzz_targets/fuzz_env.rs

@@ -0,0 +1,97 @@
+// 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.
+// spell-checker:ignore chdir
+
+#![no_main]
+use libfuzzer_sys::fuzz_target;
+use uu_env::uumain;
+
+use std::ffi::OsString;
+
+mod fuzz_common;
+use crate::fuzz_common::{
+    compare_result, generate_and_run_uumain, generate_random_string, run_gnu_cmd, CommandResult,
+};
+use rand::Rng;
+
+static CMD_PATH: &str = "env";
+
+fn generate_env_args() -> Vec<String> {
+    let mut rng = rand::thread_rng();
+    let mut args = Vec::new();
+
+    let opts = ["-i", "-0", "-v", "-vv"];
+    for opt in &opts {
+        if rng.gen_bool(0.2) {
+            args.push(opt.to_string());
+        }
+    }
+
+    if rng.gen_bool(0.3) {
+        args.push(format!(
+            "-u={}",
+            generate_random_string(rng.gen_range(3..10))
+        ));
+    }
+
+    if rng.gen_bool(0.2) {
+        args.push(format!("--chdir={}", "/tmp")); // Simplified example
+    }
+
+    /*
+        Options not implemented for now
+    if rng.gen_bool(0.15) {
+        let sig_opts = ["--block-signal"];//, /*"--default-signal",*/ "--ignore-signal"];
+        let chosen_sig_opt = sig_opts[rng.gen_range(0..sig_opts.len())];
+        args.push(chosen_sig_opt.to_string());
+        // Simplify by assuming SIGPIPE for demonstration
+        if !chosen_sig_opt.ends_with("list-signal-handling") {
+            args.push(String::from("SIGPIPE"));
+        }
+    }*/
+
+    // Adding a few random NAME=VALUE pairs
+    for _ in 0..rng.gen_range(0..3) {
+        args.push(format!(
+            "{}={}",
+            generate_random_string(5),
+            generate_random_string(5)
+        ));
+    }
+
+    args
+}
+
+fuzz_target!(|_data: &[u8]| {
+    let env_args = generate_env_args();
+    let mut args = vec![OsString::from("env")];
+    args.extend(env_args.iter().map(OsString::from));
+    let input_lines = generate_random_string(10);
+
+    let rust_result = generate_and_run_uumain(&args, uumain, Some(&input_lines));
+
+    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(
+        "env",
+        &format!("{:?}", &args[1..]),
+        None,
+        &rust_result,
+        &gnu_result,
+        false,
+    );
+});