1 files changed, 158 insertions, 0 deletions
diff --git a/src/util/gnunet-resolver.c b/src/util/gnunet-resolver.c
new file mode 100644
index 0000000..142dd0d
--- /dev/null
+++ b/src/util/gnunet-resolver.c
@@ -0,0 +1,158 @@
+/*
+     This file is part of GNUnet.
+     (C) 2010 Christian Grothoff (and other contributing authors)
+
+     GNUnet 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, or (at your
+     option) any later version.
+
+     GNUnet 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 GNUnet; see the file COPYING.  If not, write to the
+     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+     Boston, MA 02111-1307, USA.
+*/
+
+/**
+ * @file util/gnunet-resolver.c
+ * @brief tool to test resolver
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include "gnunet_util_lib.h"
+#include "gnunet_resolver_service.h"
+
+#define GET_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 1)
+
+/**
+ * Flag for reverse lookup.
+ */
+static int reverse;
+
+
+/**
+ * Prints each hostname obtained from DNS.
+ *
+ * @param cls closure (unused)
+ * @param hostname one of the names for the host, NULL
+ *        on the last call to the callback
+ */
+static void
+print_hostname (void *cls,
+		const char *hostname)
+{
+  if (NULL == hostname)
+    return;
+  FPRINTF (stdout, "%s\n", hostname);
+}
+
+
+/**
+ * Callback function to display address.
+ *
+ * @param cls closure (unused)
+ * @param addr one of the addresses of the host, NULL for the last address
+ * @param addrlen length of the address
+ */
+static void
+print_sockaddr (void *cls, const struct sockaddr *addr, socklen_t addrlen)
+{
+  if (NULL == addr)
+    return;
+  FPRINTF (stdout, "%s\n", GNUNET_a2s (addr, addrlen));
+}
+
+
+/**
+ * Main function that will be run by the scheduler.
+ *
+ * @param cls closure
+ * @param args remaining command-line arguments
+ * @param cfgfile name of the configuration file used (for saving, can be NULL!)
+ * @param cfg configuration
+ */
+static void
+run (void *cls, char *const *args, const char *cfgfile,
+     const struct GNUNET_CONFIGURATION_Handle *cfg)
+{
+  const struct sockaddr *sa;
+  socklen_t salen;
+  struct sockaddr_in v4;
+  struct sockaddr_in6 v6;
+  
+  if (args[0] == NULL)
+    return;
+  if (! reverse)
+  {
+    GNUNET_RESOLVER_ip_get (args[0], AF_UNSPEC, GET_TIMEOUT, &print_sockaddr, NULL);
+    return;
+  }
+    
+  sa = NULL;
+  memset (&v4, 0, sizeof (v4));
+  v4.sin_family = AF_INET;
+#if HAVE_SOCKADDR_IN_SIN_LEN
+  v4.sin_len = sizeof (v4);
+#endif
+  if (1 == inet_pton (AF_INET,
+		      args[0],
+		      &v4.sin_addr))
+  {
+    sa = (struct sockaddr *) &v4;
+    salen = sizeof (v4);
+  }
+  memset (&v6, 0, sizeof (v6));
+  v6.sin6_family = AF_INET6;
+#if HAVE_SOCKADDR_IN_SIN_LEN
+  v6.sin6_len = sizeof (v6);
+#endif
+  if (1 == inet_pton (AF_INET6,
+		      args[0],
+		      &v6.sin6_addr))
+  {
+    sa = (struct sockaddr *) &v6;
+    salen = sizeof (v6);
+  }
+  if (NULL == sa)
+  {
+    fprintf (stderr, 
+	     "`%s' is not a valid IP: %s\n",
+	     args[0],
+	     strerror (errno));
+    return;
+  }
+  GNUNET_RESOLVER_hostname_get (sa, salen,
+				GNUNET_YES,
+				GET_TIMEOUT,
+				&print_hostname,
+				NULL);
+}
+
+/**
+ * The main function to obtain statistics in GNUnet.
+ *
+ * @param argc number of arguments from the command line
+ * @param argv command line arguments
+ * @return 0 ok, 1 on error
+ */
+int
+main (int argc, char *const *argv)
+{
+  static const struct GNUNET_GETOPT_CommandLineOption options[] = {
+    { 'r', "reverse", NULL,
+      gettext_noop ("perform a reverse lookup"),
+      0, &GNUNET_GETOPT_set_one, &reverse },
+    GNUNET_GETOPT_OPTION_END
+  };
+  return (GNUNET_OK ==
+          GNUNET_PROGRAM_run (argc, argv, "gnunet-resolver [hostname]",
+                              gettext_noop ("Use build-in GNUnet stub resolver"),
+                              options, &run, NULL)) ? 0 : 1;
+}
+
+/* end of gnunet-resolver.c */