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e24efb88ef
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz> Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>
89 lines
1.8 KiB
C
89 lines
1.8 KiB
C
/*
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Fuzzing for stable_sort
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Copyright © Catalyst IT
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include "fuzzing/fuzzing.h"
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#include "talloc.h"
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#include "util/stable_sort.h"
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int LLVMFuzzerInitialize(int *argc, char ***argv)
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{
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return 0;
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}
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#define CMP_FN(type) static int cmp_ ## type (type *a, type *b) \
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{\
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if (*a > *b) {\
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return 1;\
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}\
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if (*a < *b) {\
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return -1;\
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}\
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return 0;\
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}
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CMP_FN(uint8_t)
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CMP_FN(uint16_t)
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CMP_FN(uint32_t)
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CMP_FN(uint64_t)
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#define MAX_SIZE (1024 * 1024)
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int LLVMFuzzerTestOneInput(uint8_t *buf, size_t len)
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{
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TALLOC_CTX *mem_ctx = NULL;
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samba_compare_fn_t fn;
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size_t s, i;
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uint8_t buf2[MAX_SIZE];
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if (len < 1 || len > MAX_SIZE) {
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return 0;
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}
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s = 1 << (buf[0] & 3);
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if (s == 1) {
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fn = (samba_compare_fn_t)cmp_uint8_t;
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} else if (s == 2) {
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fn = (samba_compare_fn_t)cmp_uint16_t;
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} else if (s == 4) {
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fn = (samba_compare_fn_t)cmp_uint32_t;
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} else {
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fn = (samba_compare_fn_t)cmp_uint64_t;
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}
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buf++;
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len--;
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len -= len & (s - 1);
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mem_ctx = talloc_new(NULL);
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memcpy(buf2, buf, len);
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stable_sort_talloc(mem_ctx, buf2, len / s, s, fn);
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talloc_free(mem_ctx);
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for (i = s; i < len; i += s) {
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int c = fn(&buf2[i - s], &buf2[i]);
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if (c > 0) {
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abort();
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}
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}
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return 0;
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}
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