src/resolve/test-resolved-packet.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include "log.h"
   4 #include "resolved-dns-packet.h"
   5 #include "tests.h"
   6
   7 static void test_dns_packet_new(void) {
   8         size_t i;
   9          _cleanup_(dns_packet_unrefp) DnsPacket *p2 = NULL;
  10
  11         for (i = 0; i <= DNS_PACKET_SIZE_MAX; i++) {
  12                 _cleanup_(dns_packet_unrefp) DnsPacket *p = NULL;
  13
  14                 assert_se(dns_packet_new(&p, DNS_PROTOCOL_DNS, i, DNS_PACKET_SIZE_MAX) == 0);
  15
  16                 log_debug("dns_packet_new: %zu → %zu", i, p->allocated);
  17                 assert_se(p->allocated >= MIN(DNS_PACKET_SIZE_MAX, i));
  18
  19                 if (i > DNS_PACKET_SIZE_START + 10 && i < DNS_PACKET_SIZE_MAX - 10)
  20                         i = MIN(i * 2, DNS_PACKET_SIZE_MAX - 10);
  21         }
  22
  23         assert_se(dns_packet_new(&p2, DNS_PROTOCOL_DNS, DNS_PACKET_SIZE_MAX + 1, DNS_PACKET_SIZE_MAX) == -EFBIG);
  24 }
  25
  26 int main(int argc, char **argv) {
  27         test_setup_logging(LOG_DEBUG);
  28
  29         test_dns_packet_new();
  30
  31         return 0;
  32 }