1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
#[doc(hidden)]
#[cfg(any(test, all(feature = "lib", fuzzing_honggfuzz)))]
pub mod fuzzer {
use bolero_engine::{
panic as bolero_panic, ByteSliceTestInput, DriverMode, Engine, Never, TargetLocation, Test,
};
use std::{mem::MaybeUninit, slice};
extern "C" {
fn HF_ITER(buf_ptr: *mut *const u8, len_ptr: *mut usize);
}
#[derive(Debug, Default)]
pub struct HonggfuzzEngine {
driver_mode: Option<DriverMode>,
}
impl HonggfuzzEngine {
pub fn new(_location: TargetLocation) -> Self {
Self::default()
}
}
impl<T: Test> Engine<T> for HonggfuzzEngine {
type Output = Never;
fn set_driver_mode(&mut self, mode: DriverMode) {
self.driver_mode = Some(mode);
}
fn run(self, mut test: T) -> Self::Output {
bolero_panic::set_hook();
let mut input = HonggfuzzInput::new(self.driver_mode);
loop {
if test.test(&mut input.test_input()).is_err() {
std::process::abort();
}
}
}
}
pub struct HonggfuzzInput {
buf_ptr: MaybeUninit<*const u8>,
len_ptr: MaybeUninit<usize>,
driver_mode: Option<DriverMode>,
}
impl HonggfuzzInput {
fn new(driver_mode: Option<DriverMode>) -> Self {
Self {
driver_mode,
buf_ptr: MaybeUninit::uninit(),
len_ptr: MaybeUninit::uninit(),
}
}
fn test_input(&mut self) -> ByteSliceTestInput {
let input = unsafe {
HF_ITER(self.buf_ptr.as_mut_ptr(), self.len_ptr.as_mut_ptr());
slice::from_raw_parts(self.buf_ptr.assume_init(), self.len_ptr.assume_init())
};
ByteSliceTestInput::new(input, self.driver_mode)
}
}
}
#[doc(hidden)]
#[cfg(all(feature = "lib", fuzzing_honggfuzz))]
pub use fuzzer::*;
#[doc(hidden)]
#[cfg(feature = "bin")]
pub mod bin {
use std::{
ffi::CString,
os::raw::{c_char, c_int},
};
extern "C" {
pub fn honggfuzz_main(a: c_int, b: *const *const c_char) -> c_int;
}
pub unsafe fn exec<Args: Iterator<Item = String>>(args: Args) {
let args = args
.map(|arg| CString::new(arg).unwrap())
.collect::<Vec<_>>();
let c_args = args
.iter()
.map(|arg| arg.as_ptr())
.chain(Some(core::ptr::null()))
.collect::<Vec<_>>();
honggfuzz_main(args.len() as c_int, c_args.as_ptr());
}
}
#[doc(hidden)]
#[cfg(feature = "bin")]
pub use bin::*;