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-rw-r--r--dirmngr/t-dns-stuff.c313
1 files changed, 313 insertions, 0 deletions
diff --git a/dirmngr/t-dns-stuff.c b/dirmngr/t-dns-stuff.c
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+++ b/dirmngr/t-dns-stuff.c
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+/* t-dns-cert.c - Module test for dns-stuff.c
+ * Copyright (C) 2011 Free Software Foundation, Inc.
+ * Copyright (C) 2011, 2015 Werner Koch
+ *
+ * This file is part of GnuPG.
+ *
+ * GnuPG is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuPG 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <assert.h>
+
+
+#include "../common/util.h"
+#include "dns-stuff.h"
+
+#define PGM "t-dns-stuff"
+
+static int verbose;
+static int debug;
+
+
+static void
+init_sockets (void)
+{
+#ifdef HAVE_W32_SYSTEM
+ WSADATA wsadat;
+
+ WSAStartup (0x202, &wsadat);
+#endif
+}
+
+
+int
+main (int argc, char **argv)
+{
+ int last_argc = -1;
+ gpg_error_t err;
+ int any_options = 0;
+ int opt_tor = 0;
+ int opt_cert = 0;
+ int opt_srv = 0;
+ int opt_bracket = 0;
+ int opt_cname = 0;
+ char const *name = NULL;
+
+ gpgrt_init ();
+ log_set_prefix (PGM, GPGRT_LOG_WITH_PREFIX);
+ if (argc)
+ { argc--; argv++; }
+ while (argc && last_argc != argc )
+ {
+ last_argc = argc;
+ if (!strcmp (*argv, "--"))
+ {
+ argc--; argv++;
+ break;
+ }
+ else if (!strcmp (*argv, "--help"))
+ {
+ fputs ("usage: " PGM " [HOST]\n"
+ "Options:\n"
+ " --verbose print timings etc.\n"
+ " --debug flyswatter\n"
+ " --standard-resolver use the system's resolver\n"
+ " --use-tor use Tor\n"
+ " --new-circuit use a new Tor circuit\n"
+ " --bracket enclose v6 addresses in brackets\n"
+ " --cert lookup a CERT RR\n"
+ " --srv lookup a SRV RR\n"
+ " --cname lookup a CNAME RR\n"
+ " --timeout SECONDS timeout after SECONDS\n"
+ , stdout);
+ exit (0);
+ }
+ else if (!strcmp (*argv, "--verbose"))
+ {
+ verbose++;
+ argc--; argv++;
+ }
+ else if (!strcmp (*argv, "--debug"))
+ {
+ verbose += 2;
+ debug++;
+ argc--; argv++;
+ }
+ else if (!strcmp (*argv, "--use-tor"))
+ {
+ opt_tor = 1;
+ argc--; argv++;
+ }
+ else if (!strcmp (*argv, "--standard-resolver"))
+ {
+ enable_standard_resolver (1);
+ argc--; argv++;
+ }
+ else if (!strcmp (*argv, "--recursive-resolver"))
+ {
+ enable_recursive_resolver (1);
+ argc--; argv++;
+ }
+ else if (!strcmp (*argv, "--bracket"))
+ {
+ opt_bracket = 1;
+ argc--; argv++;
+ }
+ else if (!strcmp (*argv, "--cert"))
+ {
+ any_options = opt_cert = 1;
+ argc--; argv++;
+ }
+ else if (!strcmp (*argv, "--srv"))
+ {
+ any_options = opt_srv = 1;
+ argc--; argv++;
+ }
+ else if (!strcmp (*argv, "--cname"))
+ {
+ any_options = opt_cname = 1;
+ argc--; argv++;
+ }
+ else if (!strcmp (*argv, "--timeout"))
+ {
+ argc--; argv++;
+ if (argc)
+ {
+ set_dns_timeout (atoi (*argv));
+ argc--; argv++;
+ }
+ }
+ else if (!strncmp (*argv, "--", 2))
+ {
+ fprintf (stderr, PGM ": unknown option '%s'\n", *argv);
+ exit (1);
+ }
+ }
+
+ if (!argc && !any_options)
+ {
+ opt_cert = 1;
+ name = "simon.josefsson.org";
+ }
+ else if (argc == 1)
+ name = *argv;
+ else
+ {
+ fprintf (stderr, PGM ": none or too many host names given\n");
+ exit (1);
+ }
+
+ set_dns_verbose (verbose, debug);
+ init_sockets ();
+
+ if (opt_tor)
+ enable_dns_tormode (0);
+
+ if (opt_cert)
+ {
+ unsigned char *fpr;
+ size_t fpr_len;
+ char *url;
+ void *key;
+ size_t keylen;
+
+ if (verbose || any_options)
+ printf ("CERT lookup on '%s'\n", name);
+
+ err = get_dns_cert (name, DNS_CERTTYPE_ANY, &key, &keylen,
+ &fpr, &fpr_len, &url);
+ if (err)
+ printf ("get_dns_cert failed: %s <%s>\n",
+ gpg_strerror (err), gpg_strsource (err));
+ else if (key)
+ {
+ if (verbose || any_options)
+ printf ("Key found (%u bytes)\n", (unsigned int)keylen);
+ }
+ else
+ {
+ if (fpr)
+ {
+ int i;
+
+ printf ("Fingerprint found (%d bytes): ", (int)fpr_len);
+ for (i = 0; i < fpr_len; i++)
+ printf ("%02X", fpr[i]);
+ putchar ('\n');
+ }
+ else
+ printf ("No fingerprint found\n");
+
+ if (url)
+ printf ("URL found: %s\n", url);
+ else
+ printf ("No URL found\n");
+
+ }
+
+ xfree (key);
+ xfree (fpr);
+ xfree (url);
+ }
+ else if (opt_cname)
+ {
+ char *cname;
+
+ printf ("CNAME lookup on '%s'\n", name);
+ err = get_dns_cname (name, &cname);
+ if (err)
+ printf ("get_dns_cname failed: %s <%s>\n",
+ gpg_strerror (err), gpg_strsource (err));
+ else
+ {
+ printf ("CNAME found: '%s'\n", cname);
+ }
+ xfree (cname);
+ }
+ else if (opt_srv)
+ {
+ struct srventry *srv;
+ unsigned int count;
+ int i;
+
+ err = get_dns_srv (name? name : "_hkp._tcp.wwwkeys.pgp.net",
+ NULL, NULL, &srv, &count);
+ if (err)
+ printf ("get_dns_srv failed: %s <%s>\n",
+ gpg_strerror (err), gpg_strsource (err));
+ else
+ {
+ printf ("count=%u\n",count);
+ for (i=0; i < count; i++)
+ {
+ printf("priority=%-8hu ",srv[i].priority);
+ printf("weight=%-8hu ",srv[i].weight);
+ printf("port=%-5hu ",srv[i].port);
+ printf("target=%s\n",srv[i].target);
+ }
+
+ xfree(srv);
+ }
+ }
+ else /* Standard lookup. */
+ {
+ char *cname;
+ dns_addrinfo_t aibuf, ai;
+ char *host;
+
+ printf ("Lookup on '%s'\n", name);
+
+ err = resolve_dns_name (name, 0, 0, SOCK_STREAM, &aibuf, &cname);
+ if (err)
+ {
+ fprintf (stderr, PGM": resolving '%s' failed: %s\n",
+ name, gpg_strerror (err));
+ exit (1);
+ }
+
+ if (cname)
+ printf ("cname: %s\n", cname);
+ for (ai = aibuf; ai; ai = ai->next)
+ {
+ printf ("%s %3d %3d ",
+ ai->family == AF_INET6? "inet6" :
+ ai->family == AF_INET? "inet4" : "? ",
+ ai->socktype, ai->protocol);
+
+ err = resolve_dns_addr (ai->addr, ai->addrlen,
+ (DNS_NUMERICHOST
+ | (opt_bracket? DNS_WITHBRACKET:0)),
+ &host);
+ if (err)
+ printf ("[resolve_dns_addr failed: %s]", gpg_strerror (err));
+ else
+ {
+ printf ("%s", host);
+ xfree (host);
+ }
+
+ err = resolve_dns_addr (ai->addr, ai->addrlen,
+ (opt_bracket? DNS_WITHBRACKET:0),
+ &host);
+ if (err)
+ printf (" [resolve_dns_addr failed (2): %s]", gpg_strerror (err));
+ else
+ {
+ if (!is_ip_address (host))
+ printf (" (%s)", host);
+ xfree (host);
+ }
+ putchar ('\n');
+ }
+ xfree (cname);
+ free_dns_addrinfo (aibuf);
+ }
+
+ reload_dns_stuff (1); /* Release objects. */
+
+ return 0;
+}