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#define _GNU_SOURCE
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
#include <fcntl.h>
#include <errno.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "dns.h"
#include "cache.c"
#include "interface.h"
int cfg_proto = 0;
int cfg_no_subnet = 0;
static void fuzz_dns_handle_packet(uint8_t *input, size_t size)
{
struct sockaddr from;
struct interface iface;
struct cache_service *s, *t;
memset(&from, 0, sizeof(from));
memset(&iface, 0, sizeof(iface));
cache_init();
dns_handle_packet(&iface, &from, 1922, input, size);
avl_for_each_element_safe(&services, s, avl, t)
cache_service_free(s);
}
int main(int argc, char *argv[])
{
size_t len = 0;
FILE *fd = NULL;
uint8_t *buf = NULL;
if (argc != 2) {
fprintf(stderr, "Usage: %s <packet.bin>\n", argv[0]);
return -1;
}
fd = fopen(argv[1], "r");
if (!fd) {
perror("unable to open input file\n");
return -1;
}
buf = calloc(1, MDNS_BUF_LEN+1);
if (!buf)
return -1;
len = fread(buf, 1, MDNS_BUF_LEN, fd);
fuzz_dns_handle_packet(buf, len);
fclose(fd);
free(buf);
}
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