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c-kzg-4844
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Check fscanf return value

This commit is contained in:
Justin Traglia 2022-12-21 11:47:48 -06:00
parent c49312af56
commit 6cf2d2e6bd
1 changed files with 13 additions and 6 deletions
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19
src/c_kzg_4844.c
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@ -810,20 +810,27 @@ C_KZG_RET load_trusted_setup(KZGSettings *out, const uint8_t g1_bytes[], size_t
C_KZG_RET load_trusted_setup_file(KZGSettings *out, FILE *in) {
uint64_t i;
int num_matches;
fscanf(in, "%" SCNu64, &i);
num_matches = fscanf(in, "%" SCNu64, &i);
CHECK(num_matches == 1);
CHECK(i == FIELD_ELEMENTS_PER_BLOB);
fscanf(in, "%" SCNu64, &i);
num_matches = fscanf(in, "%" SCNu64, &i);
CHECK(num_matches == 1);
CHECK(i == 65);
uint8_t g1_bytes[FIELD_ELEMENTS_PER_BLOB * 48];
uint8_t g2_bytes[65 * 96];
for (i = 0; i < FIELD_ELEMENTS_PER_BLOB * 48; i++)
fscanf(in, "%2hhx", &g1_bytes[i]);
for (i = 0; i < FIELD_ELEMENTS_PER_BLOB * 48; i++) {
num_matches = fscanf(in, "%2hhx", &g1_bytes[i]);
CHECK(num_matches == 1);
}
for (i = 0; i < 65 * 96; i++)
fscanf(in, "%2hhx", &g2_bytes[i]);
for (i = 0; i < 65 * 96; i++) {
num_matches = fscanf(in, "%2hhx", &g2_bytes[i]);
CHECK(num_matches == 1);
}
return load_trusted_setup(out, g1_bytes, FIELD_ELEMENTS_PER_BLOB, g2_bytes, 65);
}