1 files changed, 245 insertions, 0 deletions

diff --git a/src/cli/namecache/gnunet-namecache.c b/src/cli/namecache/gnunet-namecache.c
new file mode 100644
index 000000000..0236609aa
--- /dev/null
+++ b/src/cli/namecache/gnunet-namecache.c
@@ -0,0 +1,245 @@
+/*
+     This file is part of GNUnet.
+     Copyright (C) 2012, 2013 GNUnet e.V.
+
+     GNUnet is free software: you can redistribute it and/or modify it
+     under the terms of the GNU Affero General Public License as published
+     by the Free Software Foundation, either version 3 of the License,
+     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
+     Affero General Public License for more details.
+
+     You should have received a copy of the GNU Affero General Public License
+     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+     SPDX-License-Identifier: AGPL3.0-or-later
+ */
+/**
+ * @file gnunet-namecache.c
+ * @brief command line tool to inspect the name cache
+ * @author Christian Grothoff
+ *
+ * TODO:
+ * - test
+ */
+#include "platform.h"
+#include "gnunet_util_lib.h"
+#include "gnunet_identity_service.h"
+#include "gnunet_gnsrecord_lib.h"
+#include "gnunet_namecache_service.h"
+
+
+/**
+ * Handle to the namecache.
+ */
+static struct GNUNET_NAMECACHE_Handle *ns;
+
+/**
+ * Queue entry for the 'query' operation.
+ */
+static struct GNUNET_NAMECACHE_QueueEntry *qe;
+
+/**
+ * Name (label) of the records to list.
+ */
+static char *name;
+
+/**
+ * Public key of the zone to look in.
+ */
+static struct GNUNET_CRYPTO_PublicKey pubkey;
+
+/**
+ * Public key of the zone to look in, in ASCII.
+ */
+static char *pkey;
+
+/**
+ * Global return value
+ */
+static int ret;
+
+
+/**
+ * Task run on shutdown.  Cleans up everything.
+ *
+ * @param cls unused
+ */
+static void
+do_shutdown (void *cls)
+{
+  if (NULL != qe)
+  {
+    GNUNET_NAMECACHE_cancel (qe);
+    qe = NULL;
+  }
+  if (NULL != ns)
+  {
+    GNUNET_NAMECACHE_disconnect (ns);
+    ns = NULL;
+  }
+}
+
+
+/**
+ * Process a record that was stored in the namecache in a block.
+ *
+ * @param cls closure, NULL
+ * @param rd_len number of entries in @a rd array
+ * @param rd array of records with data to store
+ */
+static void
+display_records_from_block (void *cls,
+                            unsigned int rd_len,
+                            const struct GNUNET_GNSRECORD_Data *rd)
+{
+  const char *typestring;
+  char *s;
+  unsigned int i;
+
+  if (0 == rd_len)
+  {
+    fprintf (stdout, _ ("No records found for `%s'"), name);
+    return;
+  }
+  fprintf (stdout, "%s:\n", name);
+  for (i = 0; i < rd_len; i++)
+  {
+    typestring = GNUNET_GNSRECORD_number_to_typename (rd[i].record_type);
+    s = GNUNET_GNSRECORD_value_to_string (rd[i].record_type,
+                                          rd[i].data,
+                                          rd[i].data_size);
+    if (NULL == s)
+    {
+      fprintf (stdout,
+               _ ("\tCorrupt or unsupported record of type %u\n"),
+               (unsigned int) rd[i].record_type);
+      continue;
+    }
+    fprintf (stdout, "\t%s: %s\n", typestring, s);
+    GNUNET_free (s);
+  }
+  fprintf (stdout, "%s", "\n");
+}
+
+
+/**
+ * Display block obtained from listing (by name).
+ *
+ * @param cls NULL
+ * @param block NULL if not found
+ */
+static void
+handle_block (void *cls, const struct GNUNET_GNSRECORD_Block *block)
+{
+  qe = NULL;
+  if (NULL == block)
+  {
+    fprintf (stderr, "No matching block found\n");
+  }
+  else if (GNUNET_OK !=
+           GNUNET_GNSRECORD_block_decrypt (block,
+                                           &pubkey,
+                                           name,
+                                           &display_records_from_block,
+                                           NULL))
+  {
+    fprintf (stderr, "Failed to decrypt block!\n");
+  }
+  GNUNET_SCHEDULER_shutdown ();
+}
+
+
+/**
+ * Main function that will be run.
+ *
+ * @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)
+{
+  struct GNUNET_HashCode dhash;
+
+  if (NULL == pkey)
+  {
+    fprintf (stderr, _ ("You must specify which zone should be accessed\n"));
+    return;
+  }
+
+  if (GNUNET_OK !=
+      GNUNET_CRYPTO_public_key_from_string (pkey, &pubkey))
+  {
+    fprintf (stderr, _ ("Invalid public key for zone `%s'\n"), pkey);
+    GNUNET_SCHEDULER_shutdown ();
+    return;
+  }
+  if (NULL == name)
+  {
+    fprintf (stderr, _ ("You must specify a name\n"));
+    return;
+  }
+
+  GNUNET_SCHEDULER_add_shutdown (&do_shutdown, NULL);
+  ns = GNUNET_NAMECACHE_connect (cfg);
+  GNUNET_GNSRECORD_query_from_public_key (&pubkey, name, &dhash);
+  qe = GNUNET_NAMECACHE_lookup_block (ns, &dhash, &handle_block, NULL);
+}
+
+
+/**
+ * The main function for gnunet-namecache.
+ *
+ * @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)
+{
+  struct GNUNET_GETOPT_CommandLineOption options[] =
+  { GNUNET_GETOPT_option_string ('n',
+                                 "name",
+                                 "NAME",
+                                 gettext_noop (
+                                   "name of the record to add/delete/display"),
+                                 &name),
+
+    GNUNET_GETOPT_option_string (
+      'z',
+      "zone",
+      "PKEY",
+      gettext_noop ("specifies the public key of the zone to look in"),
+      &pkey),
+
+    GNUNET_GETOPT_OPTION_END };
+
+  if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
+    return 2;
+
+  GNUNET_log_setup ("gnunet-namecache", "WARNING", NULL);
+  if (GNUNET_OK != GNUNET_PROGRAM_run (argc,
+                                       argv,
+                                       "gnunet-namecache",
+                                       _ ("GNUnet zone manipulation tool"),
+                                       options,
+                                       &run,
+                                       NULL))
+  {
+    GNUNET_free_nz ((void *) argv);
+    return 1;
+  }
+  GNUNET_free_nz ((void *) argv);
+  return ret;
+}
+
+
+/* end of gnunet-namecache.c */