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-rw-r--r--src/dns/dns_rr_test.c433
1 files changed, 433 insertions, 0 deletions
diff --git a/src/dns/dns_rr_test.c b/src/dns/dns_rr_test.c
new file mode 100644
index 0000000..7bbe769
--- /dev/null
+++ b/src/dns/dns_rr_test.c
@@ -0,0 +1,433 @@
+ /*
+ * System library.
+ */
+#include <sys_defs.h>
+#include <stdlib.h>
+
+ /*
+ * Utility library.
+ */
+#include <msg.h>
+#include <msg_vstream.h>
+#include <mymalloc.h>
+#include <stringops.h>
+#include <vstring.h>
+
+ /*
+ * DNS library.
+ */
+#include <dns.h>
+
+#define STR(x) vstring_str(x)
+
+ /*
+ * Test helpers. TODO: move eq_dns_rr() to testing/dns_rr_testers.c; need to
+ * verify that the expected difference is reported, or use a GTEST matcher.
+ */
+
+/* print_dns_rr - format as { qname, reply, flags } */
+
+static char *print_dns_rr(VSTRING *buf, DNS_RR *rr)
+{
+ static VSTRING *tmp;
+
+ if (tmp == 0)
+ tmp = vstring_alloc(100);
+ vstring_sprintf(buf, "{qname=%s, reply='%s', flags=0x%x}",
+ rr->qname, dns_strrecord(tmp, rr), rr->flags);
+ return (STR(buf));
+}
+
+/* eq_dns_rr - predicate that two lists are equivalent */
+
+static int eq_dns_rr(DNS_RR *got, DNS_RR *want)
+{
+ VSTRING *got_buf = 0;
+ VSTRING *want_buf = 0;
+
+#define EQ_DNS_RR_RETURN(val) do { \
+ if (got_buf) \
+ vstring_free(got_buf); \
+ if (want_buf) \
+ vstring_free(want_buf); \
+ return (val); \
+ } while (0)
+
+ /* Same length. */
+ if (got == 0 && want == 0)
+ EQ_DNS_RR_RETURN(1);
+ if (want == 0) {
+ msg_warn("got %s, want null",
+ print_dns_rr(got_buf = vstring_alloc(100), got));
+ }
+ if (got == 0) {
+ msg_warn("got null, want %s",
+ print_dns_rr(want_buf = vstring_alloc(100), want));
+ EQ_DNS_RR_RETURN(0);
+ }
+ /* Same query name, resource record, flags. */
+ if (strcmp(print_dns_rr(got_buf = vstring_alloc(100), got),
+ print_dns_rr(want_buf = vstring_alloc(100), want)) != 0) {
+ msg_warn("got %s, want %s", STR(want_buf), STR(got_buf));
+ EQ_DNS_RR_RETURN(0);
+ }
+ /* Same children. */
+ EQ_DNS_RR_RETURN(eq_dns_rr(got->next, want->next));
+}
+
+static int eq_dns_rr_free(DNS_RR *got, DNS_RR *want)
+{
+ int res = eq_dns_rr(got, want);
+
+ dns_rr_free(got);
+ dns_rr_free(want);
+ return (res);
+}
+
+ /*
+ * Tests and test cases.
+ */
+typedef struct TEST_CASE {
+ const char *label; /* identifies test case */
+ int (*fn) (void);
+} TEST_CASE;
+
+#define PASS (0)
+#define FAIL (1)
+
+ /*
+ * Begin helper tests. TODO: move these to testing/dns_rr_testers_test.c.
+ */
+
+static int eq_dns_rr_qname_differ(void)
+{
+ DNS_RR *got = dns_rr_create("qa", "ra", T_SRV, C_IN, 3600, 1, 25, 1, "mxa", 4);
+ DNS_RR *want = dns_rr_copy(got);
+
+ myfree(want->qname);
+ want->qname = mystrdup("qb");
+ return (!eq_dns_rr_free(got, want));
+}
+
+static int eq_dns_rr_reply_differ(void)
+{
+ DNS_RR *got = dns_rr_create("qa", "ra", T_SRV, C_IN, 3600, 1, 25, 1, "mxa", 4);
+ DNS_RR *want = dns_rr_copy(got);
+
+ want->port += 1;
+ return (!eq_dns_rr_free(got, want));
+}
+
+ /*
+ * End helper tests.
+ */
+
+ /*
+ * Begin DNS_RR tests.
+ */
+
+static int eq_dns_rr_flags_differ(void)
+{
+ DNS_RR *got = dns_rr_create_noport("qa", "ra", T_MX, C_IN, 3600, 1, "mxa", 4);
+ DNS_RR *want = dns_rr_copy(got);
+
+ want->flags |= DNS_RR_FLAG_TRUNCATED;
+ return (!eq_dns_rr_free(got, want));
+}
+
+static int append_to_null_from_null(void)
+{
+ DNS_RR *got = dns_rr_append((DNS_RR *) 0, (DNS_RR *) 0);
+ DNS_RR *want = 0;
+
+ return (eq_dns_rr_free(got, want));
+}
+
+static int append_to_elem_from_null(void)
+{
+ DNS_RR *a = dns_rr_create_noport("qa", "ra", T_MX, C_IN, 3600, 1, "mxa", 4);
+ DNS_RR *got, *want;
+
+ got = dns_rr_append(dns_rr_copy(a), (DNS_RR *) 0);
+
+ want = a;
+
+ return (eq_dns_rr_free(got, want));
+}
+
+static int appent_to_null_from_elem(void)
+{
+ DNS_RR *a = dns_rr_create_noport("qa", "ra", T_MX, C_IN, 3600, 1, "mxa", 4);
+ DNS_RR *got, *want;
+
+ got = dns_rr_append((DNS_RR *) 0, dns_rr_copy(a));
+
+ want = a;
+
+ return (eq_dns_rr_free(got, want));
+}
+
+static int append_to_elem_from_elem(void)
+{
+ DNS_RR *a = dns_rr_create_noport("qa", "ra", T_MX, C_IN, 3600, 1, "mxa", 4);
+ DNS_RR *b = dns_rr_create_noport("qb", "rb", T_MX, C_IN, 3600, 1, "mxb", 4);
+ DNS_RR *got, *want;
+
+ got = dns_rr_append(dns_rr_copy(a), dns_rr_copy(b));
+
+ (want = a)->next = b;
+
+ return (eq_dns_rr_free(got, want));
+}
+
+static int append_to_elem_from_list(void)
+{
+ DNS_RR *a = dns_rr_create_noport("qa", "ra", T_MX, C_IN, 3600, 1, "mxa", 4);
+ DNS_RR *b = dns_rr_create_noport("qb", "rb", T_MX, C_IN, 3600, 1, "mxb", 4);
+ DNS_RR *c = dns_rr_create_noport("qc", "rc", T_MX, C_IN, 3600, 1, "mxc", 4);
+ DNS_RR *got, *want;
+
+ got = dns_rr_append(dns_rr_copy(a),
+ dns_rr_append(dns_rr_copy(b),
+ dns_rr_copy(c)));
+
+ ((want = a)->next = b)->next = c;
+
+ return (eq_dns_rr_free(got, want));
+}
+
+static int append_to_list_from_elem(void)
+{
+ DNS_RR *a = dns_rr_create_noport("qa", "ra", T_MX, C_IN, 3600, 1, "mxa", 4);
+ DNS_RR *b = dns_rr_create_noport("qb", "rb", T_MX, C_IN, 3600, 1, "mxb", 4);
+ DNS_RR *c = dns_rr_create_noport("qc", "rc", T_MX, C_IN, 3600, 1, "mxc", 4);
+ DNS_RR *got, *want;
+
+ got = dns_rr_append(dns_rr_append(dns_rr_copy(a),
+ dns_rr_copy(b)),
+ dns_rr_copy(c));
+
+ ((want = a)->next = b)->next = c;
+
+ return (eq_dns_rr_free(got, want));
+}
+
+static int append_to_list_from_list(void)
+{
+ DNS_RR *a = dns_rr_create_noport("qa", "ra", T_MX, C_IN, 3600, 1, "mxa", 4);
+ DNS_RR *b = dns_rr_create_noport("qb", "rb", T_MX, C_IN, 3600, 1, "mxb", 4);
+ DNS_RR *c = dns_rr_create_noport("qc", "rc", T_MX, C_IN, 3600, 1, "mxc", 4);
+ DNS_RR *d = dns_rr_create_noport("qd", "rd", T_MX, C_IN, 3600, 1, "mxd", 4);
+ DNS_RR *got, *want;
+
+ got = dns_rr_append(dns_rr_append(dns_rr_copy(a),
+ dns_rr_copy(b)),
+ dns_rr_append(dns_rr_copy(c),
+ dns_rr_copy(d)));
+
+ (((want = a)->next = b)->next = c)->next = d;
+
+ return (eq_dns_rr_free(got, want));
+}
+
+static int append_propagates_flags(void)
+{
+ DNS_RR *a = dns_rr_create_noport("qa", "ra", T_MX, C_IN, 3600, 1, "mxa", 4);
+ DNS_RR *b = dns_rr_create_noport("qb", "rb", T_MX, C_IN, 3600, 1, "mxb", 4);
+ DNS_RR *c = dns_rr_create_noport("qc", "rc", T_MX, C_IN, 3600, 1, "mxc", 4);
+ DNS_RR *d = dns_rr_create_noport("qd", "rd", T_MX, C_IN, 3600, 1, "mxd", 4);
+ DNS_RR *left = dns_rr_append(dns_rr_copy(a), dns_rr_copy(b));
+ DNS_RR *rite = dns_rr_append(dns_rr_copy(c), dns_rr_copy(d));
+ DNS_RR *got, *want, *rr;
+
+ for (rr = rite; rr; rr = rr->next)
+ rr->flags |= DNS_RR_FLAG_TRUNCATED;
+
+ got = dns_rr_append(left, rite);
+
+ (((want = a)->next = b)->next = c)->next = d;
+ for (rr = want; rr; rr = rr->next)
+ rr->flags |= DNS_RR_FLAG_TRUNCATED;
+
+ return (eq_dns_rr_free(got, want));
+}
+
+static int append_to_list_from_list_truncate(void)
+{
+ DNS_RR *a = dns_rr_create_noport("qa", "ra", T_MX, C_IN, 3600, 1, "mxa", 4);
+ DNS_RR *b = dns_rr_create_noport("qb", "rb", T_MX, C_IN, 3600, 1, "mxb", 4);
+ DNS_RR *c = dns_rr_create_noport("qc", "rc", T_MX, C_IN, 3600, 1, "mxc", 4);
+ DNS_RR *d = dns_rr_create_noport("qd", "rd", T_MX, C_IN, 3600, 1, "mxd", 4);
+ DNS_RR *got, *want, *rr;
+
+ var_dns_rr_list_limit = 3;
+
+ ((want = dns_rr_copy(a))->next = dns_rr_copy(b))->next = dns_rr_copy(c);
+ for (rr = want; rr; rr = rr->next)
+ rr->flags |= DNS_RR_FLAG_TRUNCATED;
+
+ got = dns_rr_append(dns_rr_append(a, b),
+ dns_rr_append(c, d));
+
+ return (eq_dns_rr_free(got, want));
+}
+
+static int append_to_list_from_elem_elem_truncate(void)
+{
+ DNS_RR *a = dns_rr_create_noport("qa", "ra", T_MX, C_IN, 3600, 1, "mxa", 4);
+ DNS_RR *b = dns_rr_create_noport("qb", "rb", T_MX, C_IN, 3600, 1, "mxb", 4);
+ DNS_RR *c = dns_rr_create_noport("qc", "rc", T_MX, C_IN, 3600, 1, "mxc", 4);
+ DNS_RR *d = dns_rr_create_noport("qd", "rd", T_MX, C_IN, 3600, 1, "mxd", 4);
+ DNS_RR *got, *want, *rr;
+
+ var_dns_rr_list_limit = 2;
+
+ (want = dns_rr_copy(a))->next = dns_rr_copy(b);
+ for (rr = want; rr; rr = rr->next)
+ rr->flags |= DNS_RR_FLAG_TRUNCATED;
+
+ got = dns_rr_append(a, b);
+ got = dns_rr_append(got, c); /* should be logged */
+ got = dns_rr_append(got, d); /* should be silent */
+
+ return (eq_dns_rr_free(got, want));
+}
+
+static int append_to_list_from_elem_truncate(void)
+{
+ DNS_RR *a = dns_rr_create_noport("qa", "ra", T_MX, C_IN, 3600, 1, "mxa", 4);
+ DNS_RR *b = dns_rr_create_noport("qb", "rb", T_MX, C_IN, 3600, 1, "mxb", 4);
+ DNS_RR *c = dns_rr_create_noport("qc", "rc", T_MX, C_IN, 3600, 1, "mxc", 4);
+ DNS_RR *got, *want, *rr;
+
+ var_dns_rr_list_limit = 2;
+
+ (want = dns_rr_copy(a))->next = dns_rr_copy(b);
+ for (rr = want; rr; rr = rr->next)
+ rr->flags |= DNS_RR_FLAG_TRUNCATED;
+
+ got = dns_rr_append(dns_rr_append(a, b), c);
+
+ return (eq_dns_rr_free(got, want));
+}
+
+static int append_to_elem_from_list_truncate(void)
+{
+ DNS_RR *a = dns_rr_create_noport("qa", "ra", T_MX, C_IN, 3600, 1, "mxa", 4);
+ DNS_RR *b = dns_rr_create_noport("qb", "rb", T_MX, C_IN, 3600, 1, "mxb", 4);
+ DNS_RR *c = dns_rr_create_noport("qc", "rc", T_MX, C_IN, 3600, 1, "mxc", 4);
+ DNS_RR *got, *want, *rr;
+
+ var_dns_rr_list_limit = 2;
+
+ (want = dns_rr_copy(a))->next = dns_rr_copy(b);
+ for (rr = want; rr; rr = rr->next)
+ rr->flags |= DNS_RR_FLAG_TRUNCATED;
+
+ got = dns_rr_append(a, dns_rr_append(b, c));
+
+ return (eq_dns_rr_free(got, want));
+}
+
+static int append_to_list_from_elem_exact_fit(void)
+{
+ DNS_RR *a = dns_rr_create_noport("qa", "ra", T_MX, C_IN, 3600, 1, "mxa", 4);
+ DNS_RR *b = dns_rr_create_noport("qb", "rb", T_MX, C_IN, 3600, 1, "mxb", 4);
+ DNS_RR *c = dns_rr_create_noport("qc", "rc", T_MX, C_IN, 3600, 1, "mxc", 4);
+ DNS_RR *got, *want;
+
+ var_dns_rr_list_limit = 3;
+
+ ((want = dns_rr_copy(a))->next = dns_rr_copy(b))->next = dns_rr_copy(c);
+
+ got = dns_rr_append(dns_rr_append(a, b), c);
+
+ return (eq_dns_rr_free(got, want));
+}
+
+static int append_to_elem_from_list_exact_fit(void)
+{
+ DNS_RR *a = dns_rr_create_noport("qa", "ra", T_MX, C_IN, 3600, 1, "mxa", 4);
+ DNS_RR *b = dns_rr_create_noport("qb", "rb", T_MX, C_IN, 3600, 1, "mxb", 4);
+ DNS_RR *c = dns_rr_create_noport("qc", "rc", T_MX, C_IN, 3600, 1, "mxc", 4);
+ DNS_RR *got, *want;
+
+ var_dns_rr_list_limit = 3;
+
+ ((want = dns_rr_copy(a))->next = dns_rr_copy(b))->next = dns_rr_copy(c);
+
+ got = dns_rr_append(a, dns_rr_append(b, c));
+
+ return (eq_dns_rr_free(got, want));
+}
+
+ /*
+ * The test cases.
+ */
+static const TEST_CASE test_cases[] = {
+
+ /*
+ * Test eq_dns_rr; TODO: move to testing/dns_rr_testers_test.c
+ */
+ "eq_dns_rr qname differ", eq_dns_rr_qname_differ,
+ "eq_dns_rr reply differ", eq_dns_rr_reply_differ,
+ "eq_dns_rr flags differ", eq_dns_rr_flags_differ,
+
+ /*
+ * Test dns_rr_append() without truncation.
+ */
+ "append to null from null", append_to_null_from_null,
+ "append to null from element", appent_to_null_from_elem,
+ "append to element from null", append_to_elem_from_null,
+ "append to element from element", append_to_elem_from_elem,
+ "append to element from list", append_to_elem_from_list,
+ "append to list from element", append_to_list_from_elem,
+ "append to list from list", append_to_list_from_list,
+
+ /*
+ * Test dns_rr_append() flag propagation.
+ */
+ "append propagates flags", append_propagates_flags,
+
+ /*
+ * Test dns_rr_append() with truncation.
+ */
+ "append to list from list truncate", append_to_list_from_list_truncate,
+ "append to list from element element truncate", append_to_list_from_elem_elem_truncate,
+ "append to list from element truncate", append_to_list_from_elem_truncate,
+ "append to element from list truncate", append_to_elem_from_list_truncate,
+ "append to list from element exact fit", append_to_list_from_elem_exact_fit,
+ "append to element from list exact fit", append_to_elem_from_list_exact_fit,
+
+ /*
+ * TODO: tests dns_rr_sort(), dns_rr_srv_sort(), dns_rr_remove(),
+ * dns_rr_shuffle(), etc.
+ */
+ 0,
+};
+
+int main(int argc, char **argv)
+{
+ const TEST_CASE *tp;
+ int pass = 0;
+ int fail = 0;
+ VSTRING *res_buf = vstring_alloc(100);
+ int saved_limit = var_dns_rr_list_limit;
+
+ msg_vstream_init(sane_basename((VSTRING *) 0, argv[0]), VSTREAM_ERR);
+
+ for (tp = test_cases; tp->label != 0; tp++) {
+ msg_info("RUN %s", tp->label);
+ if (tp->fn() == 0) {
+ fail++;
+ msg_info("FAIL %s", tp->label);
+ } else {
+ msg_info("PASS %s", tp->label);
+ pass++;
+ }
+ var_dns_rr_list_limit = saved_limit;
+ }
+ msg_info("PASS=%d FAIL=%d", pass, fail);
+ vstring_free(res_buf);
+ exit(fail != 0);
+}
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