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Finalize the fuzzer

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This commit is contained in:
Sylvestre Ledru
2025-08-14 10:52:24 +02:00
parent 82043f2ce3
commit 98224ed0cf
1 changed files with 34 additions and 32 deletions
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fuzz/fuzz_targets/fuzz_non_utf8_paths.rs
+34 -32
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@@ -3,10 +3,12 @@
// For the full copyright and license information, please view the LICENSE
// file that was distributed with this source code.
// spell-checker:ignore osstring
#![no_main]
use libfuzzer_sys::fuzz_target;
use rand::prelude::IndexedRandom;
use rand::Rng;
use rand::prelude::IndexedRandom;
use std::collections::HashSet;
use std::env::temp_dir;
use std::ffi::{OsStr, OsString};
@@ -14,10 +16,10 @@ use std::fs;
use std::os::unix::ffi::{OsStrExt, OsStringExt};
use std::path::PathBuf;
use uufuzz::{run_gnu_cmd, CommandResult};
use uufuzz::{CommandResult, run_gnu_cmd};
// Programs that typically take file/path arguments and should be tested
static PATH_PROGRAMS: &[&str] = &[
"cat", "cp", "mv", "rm", "ln", "link", "unlink", "touch", "truncate",
// Core file operations
"cat",
"cp",
"mv",
@@ -26,22 +28,22 @@ static PATH_PROGRAMS: &[&str] = &[
"link",
"unlink",
"touch",
"truncate",
// Path operations
"ls", "mkdir", "rmdir", "du", "stat", "mktemp", "df", // Path operations
"ls",
"mkdir",
"rmdir",
"du",
"stat",
"mktemp",
"df",
"df", // Path operations
"basename",
"dirname",
"readlink",
"realpath",
"pathchk",
"chroot",
// File processing
"head", "tail", "tee", "more", "od", "wc", "cksum", "sum", "nl", "tac", // File processing
"head",
"tail",
"tee",
@@ -50,8 +52,8 @@ static PATH_PROGRAMS: &[&str] = &[
"wc",
"cksum",
"sum",
"nl",
"tac",
"tac", // File processing
"sort",
"uniq",
"split",
@@ -61,14 +63,14 @@ static PATH_PROGRAMS: &[&str] = &[
"shred",
"shuf",
"ptx",
"tsort",
// Text processing with files
"chmod", "chown", "chgrp", "install", "chcon", "runcon", // Text processing with files
"chmod",
"chown",
"chgrp",
"install",
"chcon",
"runcon",
"runcon", // Text processing with files
"comm",
"join",
"paste",
@@ -76,28 +78,28 @@ static PATH_PROGRAMS: &[&str] = &[
"fmt",
"fold",
"expand",
"dir", "vdir",
"unexpand",
"dir",
"mkfifo", "mknod",
"vdir",
"mkfifo",
"mknod",
// File I/O utilities
"hashsum",
// File I/O utilities
"dd",
"sync",
"stdbuf",
"dircolors",
"base32", "base64", "basenc",
// Encoding/decoding utilities
"base32",
"base64",
"stty", "tty",
"basenc",
"stty",
"env", "nohup", "nice", "timeout",
"tty",
"env",
"nohup",
"nice",
];
"timeout",
];
fn generate_non_utf8_bytes() -> Vec<u8> {
let mut rng = rand::rng();
@@ -194,7 +196,7 @@ fn test_program_with_non_utf8_path(program: &str, path: &PathBuf) -> CommandResu
OsString::from("cat"),
path_os.to_owned(),
]
},
}
// Programs that need source and destination
"cp" | "mv" | "ln" | "link" => {
let dest_path = path.with_extension("dest");
@@ -239,9 +241,9 @@ fn test_program_with_non_utf8_path(program: &str, path: &PathBuf) -> CommandResu
OsString::from("1"),
OsString::from("3"),
]
vec![
} else {
vec![OsString::from(program), new_path.as_os_str().to_owned()]
}
},
}
"dd" => vec![
OsString::from(program),
@@ -256,23 +258,23 @@ fn test_program_with_non_utf8_path(program: &str, path: &PathBuf) -> CommandResu
OsString::from("--md5"),
path_os.to_owned(),
],
"base32" | "base64" | "basenc" => vec![
"df" => vec![
"chroot" => {
// Encoding/decoding programs
"base32" | "base64" | "basenc" => vec![OsString::from(program), path_os.to_owned()],
"df" => vec![OsString::from(program), path_os.to_owned()],
"chroot" => {
// chroot needs a directory and command
vec![
OsString::from(program),
path_os.to_owned(),
OsString::from("true"),
},
]
}
"stty" => vec![
"sync" => vec![OsString::from(program), path_os.to_owned()],
"stty" => vec![
OsString::from(program),
OsString::from("-F"),
path_os.to_owned(),
"tty" => vec![
],
"tty" => vec![OsString::from(program)], // tty doesn't take file args, but test anyway
"env" => {
let coreutils_binary = std::env::var("CARGO_BIN_FILE_COREUTILS")
@@ -283,7 +285,7 @@ fn test_program_with_non_utf8_path(program: &str, path: &PathBuf) -> CommandResu
OsString::from("cat"),
path_os.to_owned(),
]
},
}
"nohup" => {
let coreutils_binary = std::env::var("CARGO_BIN_FILE_COREUTILS")
.unwrap_or_else(|_| "target/release/coreutils".to_string());
@@ -293,7 +295,7 @@ fn test_program_with_non_utf8_path(program: &str, path: &PathBuf) -> CommandResu
OsString::from("cat"),
path_os.to_owned(),
]
},
}
"nice" => {
let coreutils_binary = std::env::var("CARGO_BIN_FILE_COREUTILS")
.unwrap_or_else(|_| "target/release/coreutils".to_string());
@@ -303,7 +305,7 @@ fn test_program_with_non_utf8_path(program: &str, path: &PathBuf) -> CommandResu
OsString::from("cat"),
path_os.to_owned(),
]
},
}
"timeout" => {
let coreutils_binary = std::env::var("CARGO_BIN_FILE_COREUTILS")
.unwrap_or_else(|_| "target/release/coreutils".to_string());
@@ -314,7 +316,7 @@ fn test_program_with_non_utf8_path(program: &str, path: &PathBuf) -> CommandResu
OsString::from("cat"),
path_os.to_owned(),
]
},
}
"stdbuf" => {
let coreutils_binary = std::env::var("CARGO_BIN_FILE_COREUTILS")
.unwrap_or_else(|_| "target/release/coreutils".to_string());
@@ -325,7 +327,7 @@ fn test_program_with_non_utf8_path(program: &str, path: &PathBuf) -> CommandResu
OsString::from("cat"),
path_os.to_owned(),
]
},
}
// Programs that work with multiple files (use just one for testing)
"comm" | "join" => {
// These need two files, use the same file twice for simplicity
@@ -340,7 +342,7 @@ fn test_program_with_non_utf8_path(program: &str, path: &PathBuf) -> CommandResu
};
// Try to run the local uutils version
match run_gnu_cmd(local_binary, &local_args, false, None) {
match run_gnu_cmd(&local_binary, &local_args, false, None) {
Ok(result) => result,
Err(error_result) => {
// Local command failed, return the error
@@ -421,7 +423,7 @@ fuzz_target!(|_data: &[u8]| {
.unwrap_or_else(|_| "target/release/coreutils".to_string());
let mkdir_args = vec![OsString::from("mkdir"), non_utf8_dir.as_os_str().to_owned()];
let mkdir_result = run_gnu_cmd(local_binary, &mkdir_args, false, None);
let mkdir_result = run_gnu_cmd(&local_binary, &mkdir_args, false, None);
match mkdir_result {
Ok(result) => {
check_for_utf8_error_and_panic(&result, "mkdir", &non_utf8_dir);