/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include <algorithm>
#include <cassert>
#include <cstddef>
#include <cstdint>
#include <cstdio>
#include "nss_scoped_ptrs.h"
#include "p12.h"
#include "pk11pub.h"
#include "seccomon.h"
#include "asn1/mutators.h"
#include "base/database.h"
static SECItem* nicknameCollision(SECItem* oldNick, PRBool* cancel,
void* wincx) {
static unsigned int counter =
0;
// Always return a unique nickname.
SECItem* item = SECITEM_AllocItem(nullptr, nullptr,
12);
item->len = snprintf((
char*)item->data,
12,
"%u", counter++) +
1;
return item;
}
extern "C" int LLVMFuzzerTestOneInput(
const uint8_t* data, size_t size) {
static NSSDatabase db = NSSDatabase();
ScopedPK11SlotInfo slot(PK11_GetInternalSlot());
assert(slot);
// Initialize the decoder.
SECItem pwItem = {siBuffer, nullptr,
0};
ScopedSEC_PKCS12DecoderContext dcx(
SEC_PKCS12DecoderStart(&pwItem, slot.get(), nullptr, nullptr, nullptr,
nullptr, nullptr, nullptr));
assert(dcx);
// Cap the max element length at 1 MB to avoid OOMs during fuzzing.
SEC_PKCS12DecoderSetMaxElementLen(dcx.get(),
std::max(
1024 *
1024, (
int)size));
// Cycle through target token CA modes.
SECPKCS12TargetTokenCAs modes[] = {SECPKCS12TargetTokenNoCAs,
SECPKCS12TargetTokenIntermediateCAs,
SECPKCS12TargetTokenAllCAs};
SEC_PKCS12DecoderSetTargetTokenCAs(dcx.get(), modes[size %
3]);
SECStatus rv = SEC_PKCS12DecoderUpdate(dcx.get(), (
unsigned char*)data, size);
if (rv != SECSuccess) {
return 0;
}
// Verify the blob.
rv = SEC_PKCS12DecoderVerify(dcx.get());
if (rv != SECSuccess) {
return 0;
}
// Validate bags.
rv = SEC_PKCS12DecoderValidateBags(dcx.get(), nicknameCollision);
if (rv != SECSuccess) {
return 0;
}
// Import cert and key.
rv = SEC_PKCS12DecoderImportBags(dcx.get());
if (rv != SECSuccess) {
return 0;
}
return 0;
}
extern "C" size_t LLVMFuzzerCustomMutator(uint8_t* data, size_t size,
size_t maxSize,
unsigned int seed) {
return ASN1Mutators::CustomMutator(data, size, maxSize, seed);
}
extern "C" size_t LLVMFuzzerCustomCrossOver(
const uint8_t* data1, size_t size1,
const uint8_t* data2, size_t size2,
uint8_t* out, size_t maxOutSize,
unsigned int seed) {
return ASN1Mutators::CustomCrossOver(data1, size1, data2, size2, out,
maxOutSize, seed);
}