summaryrefslogtreecommitdiffstats
path: root/src/dns/test_dns_lookup.c
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:46:30 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:46:30 +0000
commitb5896ba9f6047e7031e2bdee0622d543e11a6734 (patch)
treefd7b460593a2fee1be579bec5697e6d887ea3421 /src/dns/test_dns_lookup.c
parentInitial commit. (diff)
downloadpostfix-b5896ba9f6047e7031e2bdee0622d543e11a6734.tar.xz
postfix-b5896ba9f6047e7031e2bdee0622d543e11a6734.zip
Adding upstream version 3.4.23.upstream/3.4.23upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/dns/test_dns_lookup.c')
-rw-r--r--src/dns/test_dns_lookup.c129
1 files changed, 129 insertions, 0 deletions
diff --git a/src/dns/test_dns_lookup.c b/src/dns/test_dns_lookup.c
new file mode 100644
index 0000000..8366cf7
--- /dev/null
+++ b/src/dns/test_dns_lookup.c
@@ -0,0 +1,129 @@
+/*++
+/* NAME
+/* test_dns_lookup 1
+/* SUMMARY
+/* DNS lookup test program
+/* SYNOPSIS
+/* test_dns_lookup query-type domain-name
+/* DESCRIPTION
+/* test_dns_lookup performs a DNS query of the specified resource
+/* type for the specified resource name.
+/* DIAGNOSTICS
+/* Problems are reported to the standard error stream.
+/* LICENSE
+/* .ad
+/* .fi
+/* The Secure Mailer license must be distributed with this software.
+/* AUTHOR(S)
+/* Wietse Venema
+/* IBM T.J. Watson Research
+/* P.O. Box 704
+/* Yorktown Heights, NY 10598, USA
+/*
+/* Wietse Venema
+/* Google, Inc.
+/* 111 8th Avenue
+/* New York, NY 10011, USA
+/*--*/
+
+/* System library. */
+
+#include <sys_defs.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <stdlib.h>
+
+/* Utility library. */
+
+#include <vstring.h>
+#include <msg.h>
+#include <msg_vstream.h>
+#include <mymalloc.h>
+#include <argv.h>
+
+/* Global library. */
+
+#include <mail_params.h>
+
+/* Application-specific. */
+
+#include "dns.h"
+
+static void print_rr(VSTRING *buf, DNS_RR *rr)
+{
+ while (rr) {
+ vstream_printf("ad: %u, rr: %s\n",
+ rr->dnssec_valid, dns_strrecord(buf, rr));
+ rr = rr->next;
+ }
+}
+
+static NORETURN usage(char **argv)
+{
+ msg_fatal("usage: %s [-npv] [-f filter] types name", argv[0]);
+}
+
+int main(int argc, char **argv)
+{
+ ARGV *types_argv;
+ unsigned *types;
+ char *name;
+ VSTRING *fqdn = vstring_alloc(100);
+ VSTRING *why = vstring_alloc(100);
+ VSTRING *buf;
+ int rcode;
+ DNS_RR *rr;
+ int i;
+ int ch;
+ int lflags = DNS_REQ_FLAG_NONE;
+
+ if (var_dnssec_probe == 0)
+ var_dnssec_probe = mystrdup(DEF_DNSSEC_PROBE);
+
+ msg_vstream_init(argv[0], VSTREAM_ERR);
+ while ((ch = GETOPT(argc, argv, "f:npv")) > 0) {
+ switch (ch) {
+ case 'v':
+ msg_verbose++;
+ break;
+ case 'f':
+ dns_rr_filter_compile("DNS reply filter", optarg);
+ break;
+ case 'n':
+ lflags |= DNS_REQ_FLAG_NCACHE_TTL;
+ break;
+ case 'p':
+ var_dns_ncache_ttl_fix = 1;
+ break;
+ default:
+ usage(argv);
+ }
+ }
+ if (argc != optind + 2)
+ usage(argv);
+ types_argv = argv_split(argv[optind], CHARS_COMMA_SP);
+ types = (unsigned *) mymalloc(sizeof(*types) * (types_argv->argc + 1));
+ for (i = 0; i < types_argv->argc; i++)
+ if ((types[i] = dns_type(types_argv->argv[i])) == 0)
+ msg_fatal("invalid query type: %s", types_argv->argv[i]);
+ types[i] = 0;
+ argv_free(types_argv);
+ name = argv[optind + 1];
+ msg_verbose = 1;
+ switch (dns_lookup_rv(name, RES_USE_DNSSEC, &rr, fqdn, why,
+ &rcode, lflags, types)) {
+ default:
+ msg_warn("%s (rcode=%d)", vstring_str(why), rcode);
+ case DNS_OK:
+ if (rr) {
+ vstream_printf("%s: fqdn: %s\n", name, vstring_str(fqdn));
+ buf = vstring_alloc(100);
+ print_rr(buf, rr);
+ dns_rr_free(rr);
+ vstring_free(buf);
+ vstream_fflush(VSTREAM_OUT);
+ }
+ }
+ myfree((void *) types);
+ exit(0);
+}