From 55944e5e40b1be2afc4855d8d2baf4b73d1876b5 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 10 Apr 2024 22:49:52 +0200 Subject: Adding upstream version 255.4. Signed-off-by: Daniel Baumann --- src/resolve/fuzz-dns-packet.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 src/resolve/fuzz-dns-packet.c (limited to 'src/resolve/fuzz-dns-packet.c') diff --git a/src/resolve/fuzz-dns-packet.c b/src/resolve/fuzz-dns-packet.c new file mode 100644 index 0000000..a5b1fd6 --- /dev/null +++ b/src/resolve/fuzz-dns-packet.c @@ -0,0 +1,27 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include "fuzz.h" +#include "memory-util.h" +#include "resolved-dns-packet.h" + +int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) { + _cleanup_(dns_packet_unrefp) DnsPacket *p = NULL; + + if (outside_size_range(size, 0, DNS_PACKET_SIZE_MAX)) + return 0; + + fuzz_setup_logging(); + + assert_se(dns_packet_new(&p, DNS_PROTOCOL_DNS, 0, DNS_PACKET_SIZE_MAX) >= 0); + p->size = 0; /* by default append starts after the header, undo that */ + assert_se(dns_packet_append_blob(p, data, size, NULL) >= 0); + if (size < DNS_PACKET_HEADER_SIZE) { + /* make sure we pad the packet back up to the minimum header size */ + assert_se(p->allocated >= DNS_PACKET_HEADER_SIZE); + memzero(DNS_PACKET_DATA(p) + size, DNS_PACKET_HEADER_SIZE - size); + p->size = DNS_PACKET_HEADER_SIZE; + } + (void) dns_packet_extract(p); + + return 0; +} -- cgit v1.2.3