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/*
     This file is part of GNUnet.
     (C) 2006, 2009 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 2, 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 transport-testing.h
 * @brief testing lib for transport service
 *
 * @author Matthias Wachs
 */

#include "platform.h"
#include "gnunet_common.h"
#include "gnunet_getopt_lib.h"
#include "gnunet_hello_lib.h"
#include "gnunet_os_lib.h"
#include "gnunet_program_lib.h"
#include "gnunet_transport_service.h"

#define GNUNET_TRANSPORT_TESTING_ConnectRequest void *

/**
 * Context for a single peer
 */
struct PeerContext
{
  struct GNUNET_CONFIGURATION_Handle *cfg;

  struct GNUNET_TRANSPORT_Handle *th;

  struct GNUNET_TRANSPORT_GetHelloHandle *ghh;

  struct GNUNET_PeerIdentity id;

  struct GNUNET_OS_Process *arm_proc;

  GNUNET_TRANSPORT_ReceiveCallback rec;

  GNUNET_TRANSPORT_NotifyConnect nc;

  GNUNET_TRANSPORT_NotifyDisconnect nd;

  void *cb_cls;

  char *servicehome;

  unsigned int no;
};

/**
 * Callback when two peers are connected and both have called the connect callback
 * to notify clients about a new peer
 */
typedef void (*GNUNET_TRANSPORT_TESTING_connect_cb) (struct PeerContext * p1,
                                                     struct PeerContext * p2,
                                                     void *cls);


/**
 * Start a peer with the given configuration
 * @param rec receive callback
 * @param nc connect callback
 * @param nd disconnect callback
 * @param cb_cls closure for callback
 *   if NULL passed the PeerContext * will be used!
 * @return the peer context
 */
struct PeerContext *
GNUNET_TRANSPORT_TESTING_start_peer (const char *cfgname,
                                     GNUNET_TRANSPORT_ReceiveCallback rec,
                                     GNUNET_TRANSPORT_NotifyConnect nc,
                                     GNUNET_TRANSPORT_NotifyDisconnect nd,
                                     void *cb_cls);


/**
 * shutdown the given peer
 * @param p the peer
 */

void
GNUNET_TRANSPORT_TESTING_stop_peer (struct PeerContext *pc);


/**
 * Connect the given peers and call the callback when both peers report the
 * inbound connection. Remarks: start_peer's notify_connect callback can be called
 * before.
 * @param p1 peer 1
 * @param p2 peer 2
 * @param cb the callback to call
 * @param cb_cls callback cls
 * @return a connect request handle
 */
GNUNET_TRANSPORT_TESTING_ConnectRequest
GNUNET_TRANSPORT_TESTING_connect_peers (struct PeerContext *p1,
                                        struct PeerContext *p2,
                                        GNUNET_TRANSPORT_TESTING_connect_cb cb,
                                        void *cls);

/**
 * Cancel the request to connect two peers
 * Tou MUST cancel the request if you stop the peers before the peers connected succesfully
 * @param cc a connect request handle
 */
void
GNUNET_TRANSPORT_TESTING_connect_peers_cancel (void *cc);

/*
 * Some utility functions
 */

/**
 * Extracts the test filename from an absolute file name and removes the extension
 * @param file absolute file name
 * @param dest where to store result
 */
void
GNUNET_TRANSPORT_TESTING_get_test_name (const char *file, char **dest);

/**
 * This function takes the filename (e.g. argv[0), removes a "lt-"-prefix and
 * if existing ".exe"-prefix and adds the peer-number
 * @param file filename of the test, e.g. argv[0]
 * @param cfgname where to write the result
 * @param count peer number
 */
void
GNUNET_TRANSPORT_TESTING_get_config_name (const char *file, char **cfgname,
                                          int count);


/**
 * Extracts the plugin anme from an absolute file name and the test name
 * @param file absolute file name
 * @param test test name
 * @param dest where to store result
 */
void
GNUNET_TRANSPORT_TESTING_get_test_plugin_name (const char *executable,
                                               const char *testname,
                                               char **pluginname);


/**
 * Extracts the filename from an absolute file name and removes the extenstion
 * @param file absolute file name
 * @param dest where to store result
 */
void
GNUNET_TRANSPORT_TESTING_get_test_source_name (const char *file,
                                               char **testname);

/* end of transport_testing.h */