src/resolve/test-resolved-etc-hosts.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include "fd-util.h"
   4 #include "fileio.h"
   5 #include "fs-util.h"
   6 #include "log.h"
   7 #include "resolved-etc-hosts.h"
   8
   9 static void test_parse_etc_hosts_system(void) {
  10         _cleanup_fclose_ FILE *f = NULL;
  11
  12         f = fopen("/etc/hosts", "r");
  13         if (!f) {
  14                 assert_se(errno == -ENOENT);
  15                 return;
  16         }
  17
  18         _cleanup_(etc_hosts_free) EtcHosts hosts = {};
  19         assert_se(etc_hosts_parse(&hosts, f) == 0);
  20 }
  21
  22 static void test_parse_etc_hosts(const char *fname) {
  23         _cleanup_(unlink_tempfilep) char
  24                 t[] = "/tmp/test-resolved-etc-hosts.XXXXXX";
  25
  26         int fd;
  27         _cleanup_fclose_ FILE *f;
  28
  29         if (fname) {
  30                 f = fopen(fname, "r");
  31                 assert_se(f);
  32         } else {
  33                 fd = mkostemp_safe(t);
  34                 assert_se(fd >= 0);
  35
  36                 f = fdopen(fd, "r+");
  37                 fputs("1.2.3.4 some.where\n", f);
  38                 fputs("1.2.3.5 some.where\n", f);
  39                 fputs("::0 some.where some.other\n", f);
  40                 fputs("0.0.0.0 black.listed\n", f);
  41                 fputs("::5 some.where some.other foobar.foo.foo\n", f);
  42                 fputs("        \n", f);
  43                 fflush(f);
  44                 rewind(f);
  45         }
  46
  47         _cleanup_(etc_hosts_free) EtcHosts hosts = {};
  48         assert_se(etc_hosts_parse(&hosts, f) == 0);
  49
  50         if (fname)
  51                 return;
  52
  53         EtcHostsItemByName *bn;
  54         assert_se(bn = hashmap_get(hosts.by_name, "some.where"));
  55         assert_se(bn->n_addresses == 3);
  56         assert_se(bn->n_allocated >= 3);
  57
  58         assert_se(bn->addresses[0]->family == AF_INET);
  59         assert_se(memcmp(&bn->addresses[0]->address.in,
  60                          &(struct in_addr) { .s_addr = htobe32(0x01020304) }, 4) == 0);
  61         assert_se(bn->addresses[1]->family == AF_INET);
  62         assert_se(memcmp(&bn->addresses[1]->address.in,
  63                          &(struct in_addr) { .s_addr = htobe32(0x01020305) }, 4) == 0);
  64         assert_se(bn->addresses[2]->family == AF_INET6);
  65         assert_se(memcmp(&bn->addresses[2]->address.in6,
  66                          &(struct in6_addr) { .s6_addr = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5} }, 16 ) == 0);
  67
  68         assert_se(bn = hashmap_get(hosts.by_name, "some.other"));
  69         assert_se(bn->n_addresses == 1);
  70         assert_se(bn->n_allocated >= 1);
  71         assert_se(bn->addresses[0]->family == AF_INET6);
  72         assert_se(memcmp(&bn->addresses[0]->address.in6,
  73                          &(struct in6_addr) { .s6_addr = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5} }, 16 ) == 0);
  74
  75         assert_se( set_contains(hosts.no_address, "some.where"));
  76         assert_se( set_contains(hosts.no_address, "some.other"));
  77         assert_se( set_contains(hosts.no_address, "black.listed"));
  78         assert_se(!set_contains(hosts.no_address, "foobar.foo.foo"));
  79 }
  80
  81 int main(int argc, char **argv) {
  82         log_set_max_level(LOG_DEBUG);
  83         log_parse_environment();
  84         log_open();
  85
  86         if (argc == 1)
  87                 test_parse_etc_hosts_system();
  88         test_parse_etc_hosts(argv[1]);
  89
  90         return 0;
  91 }