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| 1 | +// The fuzzing harness fuzz test some of the the |
| 2 | +// unicode string normalization processing |
| 3 | + |
| 4 | +#![no_main] |
| 5 | + |
| 6 | +#[macro_use] |
| 7 | +extern crate libfuzzer_sys; |
| 8 | +extern crate unicode_normalization; |
| 9 | + |
| 10 | +use unicode_normalization::{ |
| 11 | + char::{ |
| 12 | + canonical_combining_class, compose, decompose_canonical, decompose_compatible, |
| 13 | + is_combining_mark, |
| 14 | + }, |
| 15 | + UnicodeNormalization, |
| 16 | +}; |
| 17 | + |
| 18 | +fuzz_target!(|data: (u8, String)| { |
| 19 | + let (function_index, string_data) = data; |
| 20 | + |
| 21 | + // Create an iterator for characters |
| 22 | + let mut chars = string_data.chars(); |
| 23 | + |
| 24 | + // Randomly fuzz a target function |
| 25 | + match function_index % 10 { |
| 26 | + 0 => { |
| 27 | + // Fuzz compose with two distinct characters |
| 28 | + if let (Some(c1), Some(c2)) = (chars.next(), chars.next()) { |
| 29 | + let _ = compose(c1, c2); |
| 30 | + } |
| 31 | + } |
| 32 | + 1 => { |
| 33 | + // Fuzz canonical_combining_class |
| 34 | + if let Some(c) = chars.next() { |
| 35 | + let _ = canonical_combining_class(c); |
| 36 | + } |
| 37 | + } |
| 38 | + 2 => { |
| 39 | + // Fuzz is_combining_mark |
| 40 | + if let Some(c) = chars.next() { |
| 41 | + let _ = is_combining_mark(c); |
| 42 | + } |
| 43 | + } |
| 44 | + 3 => { |
| 45 | + // Fuzz NFC |
| 46 | + let _ = string_data.nfc().collect::<String>(); |
| 47 | + } |
| 48 | + 4 => { |
| 49 | + // Fuzz NFKD |
| 50 | + let _ = string_data.nfkd().collect::<String>(); |
| 51 | + } |
| 52 | + 5 => { |
| 53 | + // Fuzz NFD |
| 54 | + let _ = string_data.nfd().collect::<String>(); |
| 55 | + } |
| 56 | + 6 => { |
| 57 | + // Fuzz NFKC |
| 58 | + let _ = string_data.nfkc().collect::<String>(); |
| 59 | + } |
| 60 | + 7 => { |
| 61 | + // Fuzz stream_safe |
| 62 | + let _ = string_data.stream_safe().collect::<String>(); |
| 63 | + } |
| 64 | + 8 => { |
| 65 | + // Fuzz decompose_canonical |
| 66 | + if let Some(c) = chars.next() { |
| 67 | + decompose_canonical(c, |_| {}); |
| 68 | + } |
| 69 | + } |
| 70 | + 9 => { |
| 71 | + // Fuzz decompose_compatible |
| 72 | + if let Some(c) = chars.next() { |
| 73 | + decompose_compatible(c, |_| {}); |
| 74 | + } |
| 75 | + } |
| 76 | + _ => {} |
| 77 | + } |
| 78 | +}); |
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