src/fuzz/fuzz-ndisc-rs.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <netinet/icmp6.h>
   4 #include <arpa/inet.h>
   5
   6 #include "alloc-util.h"
   7 #include "icmp6-util.h"
   8 #include "fuzz.h"
   9 #include "sd-ndisc.h"
  10 #include "socket-util.h"
  11 #include "ndisc-internal.h"
  12
  13 static int test_fd[2] = { -1, -1 };
  14
  15 int icmp6_bind_router_solicitation(int index) {
  16         assert_se(socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC | SOCK_NONBLOCK, 0, test_fd) >= 0);
  17         return test_fd[0];
  18 }
  19
  20 int icmp6_bind_router_advertisement(int index) {
  21         return -ENOSYS;
  22 }
  23
  24 int icmp6_receive(int fd, void *iov_base, size_t iov_len,
  25                   struct in6_addr *dst, triple_timestamp *timestamp) {
  26         assert_se(read(fd, iov_base, iov_len) == (ssize_t) iov_len);
  27
  28         if (timestamp)
  29                 triple_timestamp_get(timestamp);
  30
  31         return 0;
  32 }
  33
  34 int icmp6_send_router_solicitation(int s, const struct ether_addr *ether_addr) {
  35         return 0;
  36 }
  37
  38 int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
  39         struct ether_addr mac_addr = {
  40                 .ether_addr_octet = {'A', 'B', 'C', '1', '2', '3'}
  41         };
  42         _cleanup_(sd_event_unrefp) sd_event *e = NULL;
  43         _cleanup_(sd_ndisc_unrefp) sd_ndisc *nd = NULL;
  44
  45         assert_se(sd_event_new(&e) >= 0);
  46         assert_se(sd_ndisc_new(&nd) >= 0);
  47         assert_se(sd_ndisc_attach_event(nd, e, 0) >= 0);
  48         assert_se(sd_ndisc_set_ifindex(nd, 42) >= 0);
  49         assert_se(sd_ndisc_set_mac(nd, &mac_addr) >= 0);
  50         assert_se(sd_ndisc_start(nd) >= 0);
  51         assert_se(write(test_fd[1], data, size) == (ssize_t) size);
  52         (void) sd_event_run(e, (uint64_t) -1);
  53         assert_se(sd_ndisc_stop(nd) >= 0);
  54         close(test_fd[1]);
  55
  56         return 0;
  57 }