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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
commit | b750101eb236130cf056c675997decbac904cc49 (patch) | |
tree | a5df1a06754bdd014cb975c051c83b01c9a97532 /src/boot/efi/fuzz-efi-string.c | |
parent | Initial commit. (diff) | |
download | systemd-b750101eb236130cf056c675997decbac904cc49.tar.xz systemd-b750101eb236130cf056c675997decbac904cc49.zip |
Adding upstream version 252.22.upstream/252.22upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/boot/efi/fuzz-efi-string.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/src/boot/efi/fuzz-efi-string.c b/src/boot/efi/fuzz-efi-string.c new file mode 100644 index 0000000..3c0f0f3 --- /dev/null +++ b/src/boot/efi/fuzz-efi-string.c @@ -0,0 +1,40 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include "alloc-util.h" +#include "efi-string.h" +#include "fuzz.h" +#include "utf8.h" + +static char16_t *memdup_str16(const uint8_t *data, size_t size) { + char16_t *ret = memdup(data, size); + assert_se(ret); + ret[size / sizeof(char16_t) - 1] = '\0'; + return ret; +} + +int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) { + if (outside_size_range(size, sizeof(size_t), 64 * 1024)) + return 0; + + size_t len, len2; + memcpy(&len, data, sizeof(len)); + data += sizeof(len); + size -= sizeof(len); + + len2 = size - len; + if (len > size || len < sizeof(char16_t) || len2 < sizeof(char16_t)) + return 0; + + const char *tail8 = NULL; + _cleanup_free_ char *str8 = ASSERT_SE_PTR(memdup_suffix0(data, size)); + DO_NOT_OPTIMIZE(parse_number8(str8, &(uint64_t){ 0 }, size % 2 == 0 ? NULL : &tail8)); + + const char16_t *tail16 = NULL; + _cleanup_free_ char16_t *str16 = memdup_str16(data, size); + DO_NOT_OPTIMIZE(parse_number16(str16, &(uint64_t){ 0 }, size % 2 == 0 ? NULL : &tail16)); + + _cleanup_free_ char16_t *pattern = memdup_str16(data, len), *haystack = memdup_str16(data + len, len2); + DO_NOT_OPTIMIZE(efi_fnmatch(pattern, haystack)); + + return 0; +} |