src/network/test-routing-policy-rule.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2
   3 #include "fd-util.h"
   4 #include "fileio.h"
   5 #include "networkd-routing-policy-rule.h"
   6 #include "string-util.h"
   7 #include "tests.h"
   8 #include "tmpfile-util.h"
   9
  10 static void test_rule_serialization(const char *title, const char *ruleset, const char *expected) {
  11         char pattern[] = "/tmp/systemd-test-routing-policy-rule.XXXXXX",
  12              pattern2[] = "/tmp/systemd-test-routing-policy-rule.XXXXXX",
  13              pattern3[] = "/tmp/systemd-test-routing-policy-rule.XXXXXX";
  14         const char *cmd;
  15         int fd, fd2, fd3;
  16         _cleanup_fclose_ FILE *f = NULL, *f2 = NULL, *f3 = NULL;
  17         Set *rules = NULL;
  18         _cleanup_free_ char *buf = NULL;
  19         size_t buf_size;
  20
  21         log_info("========== %s ==========", title);
  22         log_info("put:\n%s\n", ruleset);
  23
  24         fd = mkostemp_safe(pattern);
  25         assert_se(fd >= 0);
  26         assert_se(f = fdopen(fd, "a+"));
  27         assert_se(write_string_stream(f, ruleset, 0) == 0);
  28
  29         assert_se(routing_policy_load_rules(pattern, &rules) == 0);
  30
  31         fd2 = mkostemp_safe(pattern2);
  32         assert_se(fd2 >= 0);
  33         assert_se(f2 = fdopen(fd2, "a+"));
  34
  35         assert_se(routing_policy_serialize_rules(rules, f2) == 0);
  36         assert_se(fflush_and_check(f2) == 0);
  37
  38         assert_se(read_full_file(pattern2, &buf, &buf_size) == 0);
  39
  40         log_info("got:\n%s", buf);
  41
  42         fd3 = mkostemp_safe(pattern3);
  43         assert_se(fd3 >= 0);
  44         assert_se(f3 = fdopen(fd3, "w"));
  45         assert_se(write_string_stream(f3, expected ?: ruleset, 0) == 0);
  46
  47         cmd = strjoina("diff -u ", pattern3, " ", pattern2);
  48         log_info("$ %s", cmd);
  49         assert_se(system(cmd) == 0);
  50
  51         set_free(rules);
  52 }
  53
  54 int main(int argc, char **argv) {
  55         _cleanup_free_ char *p = NULL;
  56
  57         test_setup_logging(LOG_DEBUG);
  58
  59         test_rule_serialization("basic parsing",
  60                                 "RULE=family=AF_INET from=1.2.3.4/32 to=2.3.4.5/32 tos=5 priority=10 fwmark=1/2 invert_rule=yes table=10", NULL);
  61
  62         test_rule_serialization("ignored values",
  63                                 "RULE=something=to=ignore from=1.2.3.4/32 from=1.2.3.4/32"
  64                                 "   \t  to=2.3.4.5/24 to=2.3.4.5/32 tos=5 fwmark=2 fwmark=1 table=10 table=20",
  65                                 "RULE=family=AF_INET from=1.2.3.4/32 to=2.3.4.5/32 tos=5 fwmark=1 invert_rule=no table=20");
  66
  67         test_rule_serialization("ipv6",
  68                                 "RULE=family=AF_INET6 from=1::2/64 to=2::3/64 invert_rule=yes table=6", NULL);
  69
  70         assert_se(asprintf(&p, "RULE=family=AF_INET6 from=1::2/64 to=2::3/64 invert_rule=no table=%d", RT_TABLE_MAIN) >= 0);
  71         test_rule_serialization("default table",
  72                                 "RULE=from=1::2/64 to=2::3/64", p);
  73
  74         test_rule_serialization("incoming interface",
  75                                 "RULE=from=1::2/64 to=2::3/64 table=1 iif=lo",
  76                                 "RULE=family=AF_INET6 from=1::2/64 to=2::3/64 iif=lo invert_rule=no table=1");
  77
  78         test_rule_serialization("outgoing interface",
  79                                 "RULE=family=AF_INET6 from=1::2/64 to=2::3/64 oif=eth0 invert_rule=no table=1", NULL);
  80
  81         test_rule_serialization("freeing interface names",
  82                                 "RULE=from=1::2/64 to=2::3/64 family=AF_INET6 iif=e0 iif=e1 oif=e0 oif=e1 table=1",
  83                                 "RULE=family=AF_INET6 from=1::2/64 to=2::3/64 iif=e1 oif=e1 invert_rule=no table=1");
  84
  85         test_rule_serialization("ignoring invalid family",
  86                                 "RULE=from=1::2/64 to=2::3/64 family=AF_UNSEPC family=AF_INET table=1",
  87                                 "RULE=family=AF_INET6 from=1::2/64 to=2::3/64 invert_rule=no table=1");
  88
  89         return 0;
  90 }