glib/fuzzing/fuzz_resolver.c

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#include "fuzz.h"
#include "gio/gnetworking.h"
#include "../gio/gthreadedresolver.h"
static void
test_for_rrtype (const guint8 *data,
gsize data_len,
gint rrtype)
{
/* g_resolver_records_from_res_query() is only available on Unix */
#ifdef G_OS_UNIX
GList *record_list = NULL;
/* Data too long? */
if (data_len > G_MAXSSIZE)
return;
/* rrname is only used in error messages, so doesnt need to vary.
* herr is used similarly, so is just set to zero. */
record_list = g_resolver_records_from_res_query ("rrname",
rrtype,
data,
data_len,
0,
NULL);
g_list_free_full (record_list, (GDestroyNotify) g_variant_unref);
#endif /* G_OS_UNIX */
}
int
LLVMFuzzerTestOneInput (const unsigned char *data, size_t size)
{
const gint rrtypes_to_test[] =
{
/* See https://en.wikipedia.org/wiki/List_of_DNS_record_types */
33 /* SRV */,
15 /* MX */,
6 /* SOA */,
2 /* NS */,
16 /* TXT */,
999, /* not currently a valid rrtype, to test the unknown code path */
};
gsize i;
fuzz_set_logging_func ();
for (i = 0; i < G_N_ELEMENTS (rrtypes_to_test); i++)
test_for_rrtype (data, size, rrtypes_to_test[i]);
return 0;
}