mirror of https://github.com/openssl/openssl
120 lines
3.2 KiB
C
120 lines
3.2 KiB
C
/*
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* Copyright 2016-2022 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* https://www.openssl.org/source/license.html
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* or in the file LICENSE in the source distribution.
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*/
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#include <openssl/ssl.h>
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#include <openssl/err.h>
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#include <openssl/bio.h>
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#include "fuzzer.h"
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#include "internal/quic_srtm.h"
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int FuzzerInitialize(int *argc, char ***argv)
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{
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FuzzerSetRand();
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OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS | OPENSSL_INIT_ASYNC, NULL);
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OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL);
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ERR_clear_error();
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return 1;
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}
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/*
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* Fuzzer input "protocol":
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* Big endian
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* Zero or more of:
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* ADD - u8(0x00) u64(opaque) u64(seq_num) u128(token)
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* REMOVE - u8(0x01) u64(opaque) u64(seq_num)
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* CULL - u8(0x02) u64(opaque)
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* LOOKUP - u8(0x03) u128(token) u64(idx)
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*/
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enum {
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CMD_ADD,
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CMD_REMOVE,
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CMD_CULL,
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CMD_LOOKUP
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};
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int FuzzerTestOneInput(const uint8_t *buf, size_t len)
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{
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int rc = 0;
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QUIC_SRTM *srtm = NULL;
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PACKET pkt;
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unsigned int cmd;
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uint64_t arg_opaque, arg_seq_num, arg_idx;
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QUIC_STATELESS_RESET_TOKEN arg_token;
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if ((srtm = ossl_quic_srtm_new(NULL, NULL)) == NULL) {
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rc = -1;
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goto err;
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}
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if (!PACKET_buf_init(&pkt, buf, len))
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goto err;
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while (PACKET_remaining(&pkt) > 0) {
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if (!PACKET_get_1(&pkt, &cmd))
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goto err;
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switch (cmd) {
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case CMD_ADD:
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if (!PACKET_get_net_8(&pkt, &arg_opaque)
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|| !PACKET_get_net_8(&pkt, &arg_seq_num)
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|| !PACKET_copy_bytes(&pkt, arg_token.token,
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sizeof(arg_token.token)))
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continue; /* just stop */
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ossl_quic_srtm_add(srtm, (void *)(uintptr_t)arg_opaque,
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arg_seq_num, &arg_token);
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ossl_quic_srtm_check(srtm);
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break;
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case CMD_REMOVE:
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if (!PACKET_get_net_8(&pkt, &arg_opaque)
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|| !PACKET_get_net_8(&pkt, &arg_seq_num))
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continue; /* just stop */
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ossl_quic_srtm_remove(srtm, (void *)(uintptr_t)arg_opaque,
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arg_seq_num);
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ossl_quic_srtm_check(srtm);
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break;
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case CMD_CULL:
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if (!PACKET_get_net_8(&pkt, &arg_opaque))
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continue; /* just stop */
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ossl_quic_srtm_cull(srtm, (void *)(uintptr_t)arg_opaque);
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ossl_quic_srtm_check(srtm);
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break;
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case CMD_LOOKUP:
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if (!PACKET_copy_bytes(&pkt, arg_token.token,
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sizeof(arg_token.token))
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|| !PACKET_get_net_8(&pkt, &arg_idx))
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continue; /* just stop */
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ossl_quic_srtm_lookup(srtm, &arg_token, (size_t)arg_idx,
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NULL, NULL);
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ossl_quic_srtm_check(srtm);
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break;
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default:
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/* Other bytes are treated as no-ops */
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continue;
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}
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}
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err:
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ossl_quic_srtm_free(srtm);
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return rc;
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}
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void FuzzerCleanup(void)
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{
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FuzzerClearRand();
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}
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