[GNUnet-SVN] r15901 - gnunet/src/peerinfo-tool

[gnunet]

Author: nevans
Date: 2011-07-08 18:47:31 +0200 (Fri, 08 Jul 2011)
New Revision: 15901

Added:
   gnunet/src/peerinfo-tool/gnunet-list-connections.c
Log:
list connections binary source

Added: gnunet/src/peerinfo-tool/gnunet-list-connections.c
===================================================================
--- gnunet/src/peerinfo-tool/gnunet-list-connections.c                          
(rev 0)
+++ gnunet/src/peerinfo-tool/gnunet-list-connections.c  2011-07-08 16:47:31 UTC 
(rev 15901)
@@ -0,0 +1,195 @@
+/*
+     This file is part of GNUnet.
+     (C) 2001, 2002, 2003, 2004, 2006, 2009, 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 peerinfo-tool/gnunet-list-connections.c
+ * @brief Print information about other known _connected_ peers.
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include "gnunet_crypto_lib.h"
+#include "gnunet_configuration_lib.h"
+#include "gnunet_getopt_lib.h"
+#include "gnunet_peerinfo_service.h"
+#include "gnunet_transport_service.h"
+#include "gnunet_core_service.h"
+#include "gnunet_program_lib.h"
+
+static int no_resolve;
+
+
+static const struct GNUNET_CONFIGURATION_Handle *cfg;
+
+struct AddressStringList
+{
+  /**
+   * Pointer to previous element.
+   */
+  struct AddressStringList *prev;
+
+  /**
+   * Pointer to next element.
+   */
+  struct AddressStringList *next;
+
+  /**
+   * Address as string.
+   */
+  char *address_string;
+};
+
+struct PrintContext
+{
+  struct GNUNET_PeerIdentity peer;
+  struct AddressStringList *address_list_head;
+  struct AddressStringList *address_list_tail;
+};
+
+
+static void
+dump_pc (struct PrintContext *pc)
+{
+  struct GNUNET_CRYPTO_HashAsciiEncoded enc;
+  struct AddressStringList *address;
+
+  GNUNET_CRYPTO_hash_to_enc (&pc->peer.hashPubKey, &enc);
+  printf (_("Peer `%s'\n"),
+          (const char *) &enc);
+  while (NULL != (address = pc->address_list_head))
+    {
+      printf ("\t%s\n", address->address_string);
+      GNUNET_free(address->address_string);
+      GNUNET_CONTAINER_DLL_remove(pc->address_list_head, 
pc->address_list_tail, address);
+      GNUNET_free(address);
+    }
+
+  printf ("\n");
+
+  GNUNET_free (pc);
+}
+
+
+/**
+ * Function to call with a human-readable format of an address
+ *
+ * @param cls closure
+ * @param address NULL on error, otherwise 0-terminated printable UTF-8 string
+ */
+static void
+process_resolved_address (void *cls,
+                          const char *address)
+{
+  struct PrintContext *pc = cls;
+  struct AddressStringList *new_address;
+
+  if (address == NULL)
+    {
+      dump_pc (pc);
+      return;
+    }
+
+  new_address = GNUNET_malloc(sizeof(struct AddressStringList));
+#if VERBOSE
+  fprintf(stderr, "Received address %s\n", address);
+#endif
+  new_address->address_string = GNUNET_strdup(address);
+  GNUNET_CONTAINER_DLL_insert(pc->address_list_head, pc->address_list_tail, 
new_address);
+}
+
+
+/**
+ * Callback for retrieving a list of connected peers.
+ */
+static void
+connected_peer_callback (void *cls, const struct GNUNET_PeerIdentity *peer,
+                         const struct GNUNET_TRANSPORT_ATS_Information *atsi)
+{
+  struct PrintContext *pc;
+
+  if (peer != NULL) /* Not yet finished */
+    {
+#if VERBOSE
+      fprintf(stderr, "Learned about peer %s\n", GNUNET_i2s(peer));
+#endif
+      pc = GNUNET_malloc (sizeof (struct PrintContext));
+      pc->peer = *peer;
+      GNUNET_TRANSPORT_peer_address_lookup (cfg, peer,
+                                            GNUNET_TIME_UNIT_MINUTES,
+                                            &process_resolved_address, pc);
+    }
+}
+
+
+/**
+ * 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 c configuration
+ */
+static void
+run (void *cls,
+     char *const *args,
+     const char *cfgfile,
+     const struct GNUNET_CONFIGURATION_Handle *c)
+{
+
+  cfg = c;
+  if (args[0] != NULL)
+    {
+      fprintf (stderr,
+               _("Invalid command line argument `%s'\n"),
+               args[0]);
+      return;
+    }
+
+  GNUNET_CORE_iterate_peers (cfg,
+                             &connected_peer_callback,
+                             NULL);
+
+}
+
+
+/**
+ * The main function to obtain peer information.
+ *
+ * @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[] = {
+    {'n', "numeric", NULL,
+     gettext_noop ("don't resolve host names"),
+     0, &GNUNET_GETOPT_set_one, &no_resolve},
+    GNUNET_GETOPT_OPTION_END
+  };
+  return (GNUNET_OK ==
+          GNUNET_PROGRAM_run (argc,
+                              argv,
+                              "gnunet-list-connections",
+                              gettext_noop ("Print information about connected 
peers."),
+                              options, &run, NULL)) ? 0 : 1;
+}
+
+/* end of gnunet-peerinfo.c */