src/libsystemd-network/fuzz-lldp-rx.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2
   3 #include <errno.h>
   4 #include <unistd.h>
   5
   6 #include "sd-event.h"
   7 #include "sd-lldp-rx.h"
   8
   9 #include "fd-util.h"
  10 #include "fuzz.h"
  11 #include "lldp-network.h"
  12
  13 static int test_fd[2] = PIPE_EBADF;
  14
  15 int lldp_network_bind_raw_socket(int ifindex) {
  16         if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC | SOCK_NONBLOCK, 0, test_fd) < 0)
  17                 return -errno;
  18
  19         return test_fd[0];
  20 }
  21
  22 int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
  23         _cleanup_(sd_event_unrefp) sd_event *e = NULL;
  24         _cleanup_(sd_lldp_rx_unrefp) sd_lldp_rx *lldp_rx = NULL;
  25
  26         if (outside_size_range(size, 0, 2048))
  27                 return 0;
  28
  29         assert_se(sd_event_new(&e) == 0);
  30         assert_se(sd_lldp_rx_new(&lldp_rx) >= 0);
  31         assert_se(sd_lldp_rx_set_ifindex(lldp_rx, 42) >= 0);
  32         assert_se(sd_lldp_rx_attach_event(lldp_rx, e, 0) >= 0);
  33         assert_se(sd_lldp_rx_start(lldp_rx) >= 0);
  34
  35         assert_se(write(test_fd[1], data, size) == (ssize_t) size);
  36         assert_se(sd_event_run(e, 0) >= 0);
  37
  38         assert_se(sd_lldp_rx_stop(lldp_rx) >= 0);
  39         assert_se(sd_lldp_rx_detach_event(lldp_rx) >= 0);
  40         test_fd[1] = safe_close(test_fd[1]);
  41
  42         return 0;
  43 }