path: root/src/transport/transport-testing.c

/*
     This file is part of GNUnet.
     Copyright (C) 2006, 2009, 2015, 2016 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/>.
*/
/**
 * @file transport-testing.c
 * @brief testing lib for transport service
 * @author Matthias Wachs
 * @author Christian Grothoff
 */
#include "transport-testing.h"


#define LOG(kind,...) GNUNET_log_from(kind, "transport-testing", __VA_ARGS__)


static struct GNUNET_TRANSPORT_TESTING_PeerContext *
find_peer_context (struct GNUNET_TRANSPORT_TESTING_Handle *tth,
                   const struct GNUNET_PeerIdentity *peer)
{
  struct GNUNET_TRANSPORT_TESTING_PeerContext *t;

  for (t = tth->p_head; NULL != t; t = t->next)
    if (0 == memcmp (&t->id,
                     peer,
                     sizeof (struct GNUNET_PeerIdentity)))
      return t;
  return NULL;
}


/**
 * Find any connecting context matching the given pair of peers.
 *
 * @param p1 first peer
 * @param p2 second peer
 * @param cb function to call
 * @param cb_cls closure for @a cb
 */
void
GNUNET_TRANSPORT_TESTING_find_connecting_context (struct GNUNET_TRANSPORT_TESTING_PeerContext *p1,
						  struct GNUNET_TRANSPORT_TESTING_PeerContext *p2,
						  GNUNET_TRANSPORT_TESTING_ConnectContextCallback cb,
						  void *cb_cls)
{
  struct GNUNET_TRANSPORT_TESTING_Handle *tth = p1->tth;
  struct GNUNET_TRANSPORT_TESTING_ConnectRequest *cc;
  struct GNUNET_TRANSPORT_TESTING_ConnectRequest *ccn;

  for (cc = tth->cc_head; NULL != cc; cc = ccn)
  {
    ccn = cc->next;
    if ( (cc->p1 == p1) &&
	 (cc->p2 == p2) )
      cb (cb_cls,
	  cc);
  }
}


static void
set_p1c (void *cls,
	 struct GNUNET_TRANSPORT_TESTING_ConnectRequest *cx)
{
  int *found = cls;

  if (NULL != found)
    *found = GNUNET_YES;
  cx->p1_c = GNUNET_YES;
}


static void
set_mq (void *cls,
	struct GNUNET_TRANSPORT_TESTING_ConnectRequest *cx)
{
  struct GNUNET_MQ_Handle *mq = cls;

  cx->mq = mq;
}


static void
set_p2c (void *cls,
	 struct GNUNET_TRANSPORT_TESTING_ConnectRequest *cx)
{
  int *found = cls;

  if (NULL != found)
    *found = GNUNET_YES;
  cx->p2_c = GNUNET_YES;
}


static void
clear_p1c (void *cls,
	   struct GNUNET_TRANSPORT_TESTING_ConnectRequest *cx)
{
  int *found = cls;

  if (NULL != found)
    *found = GNUNET_YES;
  cx->p1_c = GNUNET_NO;
}


static void
clear_p2c (void *cls,
	 struct GNUNET_TRANSPORT_TESTING_ConnectRequest *cx)
{
  int *found = cls;

  if (NULL != found)
    *found = GNUNET_YES;
  cx->p2_c = GNUNET_NO;
}


static void *
notify_connect (void *cls,
                const struct GNUNET_PeerIdentity *peer,
		struct GNUNET_MQ_Handle *mq)
{
  struct GNUNET_TRANSPORT_TESTING_PeerContext *p = cls;
  struct GNUNET_TRANSPORT_TESTING_Handle *tth = p->tth;
  char *p2_s;
  struct GNUNET_TRANSPORT_TESTING_PeerContext *p2;
  struct GNUNET_TRANSPORT_TESTING_ConnectRequest *cc;
  struct GNUNET_TRANSPORT_TESTING_ConnectRequest *ccn;
  int found;
  void *ret;

  p2 = find_peer_context (p->tth,
                          peer);
  if (NULL != p->nc)
    ret = p->nc (p->cb_cls,
		 peer,
		 mq);
  else
    ret = NULL;

  if (NULL != p2)
    GNUNET_asprintf (&p2_s,
                     "%u (`%s')",
                     p2->no,
                     GNUNET_i2s (&p2->id));
  else
    GNUNET_asprintf (&p2_s,
                     "`%s'",
                     GNUNET_i2s (peer));
  LOG (GNUNET_ERROR_TYPE_DEBUG,
       "Peers %s connected to peer %u (`%s')\n",
       p2_s,
       p->no,
       GNUNET_i2s (&p->id));
  GNUNET_free (p2_s);
  /* update flags in connecting contexts */
  found = GNUNET_NO;
  GNUNET_TRANSPORT_TESTING_find_connecting_context (p,
						    p2,
						    &set_p1c,
						    &found);
  if (GNUNET_NO == found)
  {
    cc = GNUNET_new (struct GNUNET_TRANSPORT_TESTING_ConnectRequest);
    cc->p1 = p;
    cc->p2 = p2;
    cc->p1_c = GNUNET_YES;
    GNUNET_CONTAINER_DLL_insert (tth->cc_head,
				 tth->cc_tail,
				 cc);
  }
  found = GNUNET_NO;
  GNUNET_TRANSPORT_TESTING_find_connecting_context (p2,
						    p,
						    &set_p2c,
						    &found);
  if (GNUNET_NO == found)
  {
    cc = GNUNET_new (struct GNUNET_TRANSP