diff options
| author | Douglas Bagnall <douglas.bagnall@catalyst.net.nz> | 2022-11-17 16:08:52 +1300 |
|---|---|---|
| committer | Joseph Sutton <jsutton@samba.org> | 2022-12-01 22:56:39 +0000 |
| commit | cda3c1a22706ea1b4ebfb2f2faacf03bb6192fc9 (patch) | |
| tree | 6045469dc6c5c3e53ae77ab356832734500dcfbf /lib/fuzzing | |
| parent | e795985067eb881b857d711f23ac462adb45d052 (diff) | |
| download | samba-cda3c1a22706ea1b4ebfb2f2faacf03bb6192fc9.tar.gz | |
fuzz: add fuzz_lzxpress_huffman_decompress
Most strings will not successfully decompress, which is OK. What we
care about of course is memory safety.
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Diffstat (limited to 'lib/fuzzing')
| -rw-r--r-- | lib/fuzzing/fuzz_lzxpress_huffman_decompress.c | 48 | ||||
| -rw-r--r-- | lib/fuzzing/wscript_build | 5 |
2 files changed, 53 insertions, 0 deletions
diff --git a/lib/fuzzing/fuzz_lzxpress_huffman_decompress.c b/lib/fuzzing/fuzz_lzxpress_huffman_decompress.c new file mode 100644 index 00000000000..da3a101ca1a --- /dev/null +++ b/lib/fuzzing/fuzz_lzxpress_huffman_decompress.c @@ -0,0 +1,48 @@ +/* + Fuzzing for lzxpress_decompress + Copyright (C) Michael Hanselmann 2019 + Copyright (C) Douglas Bagnall 2022 <dbagnall@samba.org> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +#include "includes.h" +#include "fuzzing/fuzzing.h" +#include "compression/lzxpress_huffman.h" + +int LLVMFuzzerInitialize(int *argc, char ***argv) +{ + return 0; +} + +static uint8_t output[1024 * 1024] = {0}; + +int LLVMFuzzerTestOneInput(uint8_t *buf, size_t len) +{ + size_t target_len; + if (len < 4) { + return 0; + } + /* + * An exact target length is required, which we store in the first 24 + * bits. + */ + target_len = MIN(sizeof(output), buf[0] | (buf[1] << 8) | (buf[2] << 16)); + buf += 3; + len -= 3; + + lzxpress_huffman_decompress(buf, len, output, target_len); + + return 0; +} diff --git a/lib/fuzzing/wscript_build b/lib/fuzzing/wscript_build index ca6c4f777a3..600c827e31e 100644 --- a/lib/fuzzing/wscript_build +++ b/lib/fuzzing/wscript_build @@ -57,6 +57,11 @@ bld.SAMBA_BINARY('fuzz_lzxpress_round_trip', deps='fuzzing LZXPRESS afl-fuzz-main', fuzzer=True) +bld.SAMBA_BINARY('fuzz_lzxpress_huffman_decompress', + source='fuzz_lzxpress_huffman_decompress.c', + deps='fuzzing LZXPRESS afl-fuzz-main', + fuzzer=True) + bld.SAMBA_BINARY('fuzz_ldap_decode', source='fuzz_ldap_decode.c', deps='fuzzing cli-ldap afl-fuzz-main', |