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-rw-r--r--src/resolve/test-dns-packet.c115
1 files changed, 115 insertions, 0 deletions
diff --git a/src/resolve/test-dns-packet.c b/src/resolve/test-dns-packet.c
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+++ b/src/resolve/test-dns-packet.c
@@ -0,0 +1,115 @@
+/***
+ This file is part of systemd
+
+ Copyright 2016 Zbigniew Jędrzejewski-Szmek
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <net/if.h>
+#include <glob.h>
+
+#include "alloc-util.h"
+#include "fileio.h"
+#include "glob-util.h"
+#include "log.h"
+#include "macro.h"
+#include "resolved-dns-packet.h"
+#include "resolved-dns-rr.h"
+#include "string-util.h"
+#include "strv.h"
+
+#define HASH_KEY SD_ID128_MAKE(d3,1e,48,90,4b,fa,4c,fe,af,9d,d5,a1,d7,2e,8a,b1)
+
+static uint64_t hash(DnsResourceRecord *rr) {
+ struct siphash state;
+
+ siphash24_init(&state, HASH_KEY.bytes);
+ dns_resource_record_hash_func(rr, &state);
+ return siphash24_finalize(&state);
+}
+
+static void test_packet_from_file(const char* filename, bool canonical) {
+ _cleanup_free_ char *data = NULL;
+ size_t data_size, packet_size, offset;
+
+ assert_se(read_full_file(filename, &data, &data_size) >= 0);
+ assert_se(data);
+ assert_se(data_size > 8);
+
+ log_info("============== %s %s==============", filename, canonical ? "canonical " : "");
+
+ for (offset = 0; offset < data_size; offset += 8 + packet_size) {
+ _cleanup_(dns_packet_unrefp) DnsPacket *p = NULL, *p2 = NULL;
+ _cleanup_(dns_resource_record_unrefp) DnsResourceRecord *rr = NULL, *rr2 = NULL;
+ const char *s, *s2;
+ uint64_t hash1, hash2;
+
+ packet_size = le64toh( *(uint64_t*)(data + offset) );
+ assert_se(packet_size > 0);
+ assert_se(offset + 8 + packet_size <= data_size);
+
+ assert_se(dns_packet_new(&p, DNS_PROTOCOL_DNS, 0) >= 0);
+
+ assert_se(dns_packet_append_blob(p, data + offset + 8, packet_size, NULL) >= 0);
+ assert_se(dns_packet_read_rr(p, &rr, NULL, NULL) >= 0);
+
+ s = dns_resource_record_to_string(rr);
+ assert_se(s);
+ puts(s);
+
+ hash1 = hash(rr);
+
+ assert_se(dns_resource_record_to_wire_format(rr, canonical) >= 0);
+
+ assert_se(dns_packet_new(&p2, DNS_PROTOCOL_DNS, 0) >= 0);
+ assert_se(dns_packet_append_blob(p2, rr->wire_format, rr->wire_format_size, NULL) >= 0);
+ assert_se(dns_packet_read_rr(p2, &rr2, NULL, NULL) >= 0);
+
+ s2 = dns_resource_record_to_string(rr);
+ assert_se(s2);
+ assert_se(streq(s, s2));
+
+ hash2 = hash(rr);
+ assert_se(hash1 == hash2);
+ }
+}
+
+int main(int argc, char **argv) {
+ int i, N;
+ _cleanup_globfree_ glob_t g = {};
+ _cleanup_strv_free_ char **globs = NULL;
+ char **fnames;
+
+ log_parse_environment();
+
+ if (argc >= 2) {
+ N = argc - 1;
+ fnames = argv + 1;
+ } else {
+ assert_se(glob(RESOLVE_TEST_DIR "/*.pkts", GLOB_NOSORT, NULL, &g) == 0);
+ N = g.gl_pathc;
+ fnames = g.gl_pathv;
+ }
+
+ for (i = 0; i < N; i++) {
+ test_packet_from_file(fnames[i], false);
+ puts("");
+ test_packet_from_file(fnames[i], true);
+ if (i + 1 < N)
+ puts("");
+ }
+
+ return EXIT_SUCCESS;
+}