/*

 * filetransfer.c

 *

 * Copyrigth (C) 2010 Nicolas Cornu <nicolas.cornu@ensi-bourges.fr>

 *

 * This program 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 of the License, or (at

 * your option) any later version.

 *

 * This program 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 this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307

 * USA

 */

#include "config.h"

#include <glib.h>

#include <mcabber/modules.h>

#include <mcabber/utils.h>

#include <mcabber/xmpp_helper.h>

#include <jingle/jingle.h>

#include <jingle/check.h>

#include <jingle/register.h>

#include "ibb.h"

gconstpointer jingle_ibb_check(JingleContent *cn, GError **err);

static void jingle_ibb_init(void);

static void jingle_ibb_uninit(void);

const gchar *deps[] = { "jingle", NULL };

JingleTransportFuncs funcs = {jingle_ibb_check, NULL};

module_info_t info_jingle_filetransfer = {

  .branch          = MCABBER_BRANCH,

  .api             = MCABBER_API_VERSION,

  .version         = PROJECT_VERSION,

  .description     = "Jingle In Band Bytestream (XEP-0261)\n",

  .requires        = deps,

  .init            = jingle_ibb_init,

  .uninit          = jingle_ibb_uninit,

  .next            = NULL,

};

gconstpointer jingle_ibb_check(JingleContent *cn, GError **err)

{

  JingleIBB *ibb = NULL;

  LmMessageNode *node = cn->transport;

  const gchar *blocksize;

  blocksize  = lm_message_node_get_attribute(node, "block-size");

  ibb->sid = lm_message_node_get_attribute(node, "sid");

  if (!ibb->sid || !blocksize) {

    g_set_error(err, JINGLE_CHECK_ERROR, JINGLE_CHECK_ERROR_MISSING,

                "an attribute of the transport element is missing");

    g_free(ibb);

    return NULL;

  }

  ibb->blocksize = g_ascii_strtoll(blocksize, NULL, 10);

  // the size attribute is a xs:short an therefore can be negative.

  if (ibb->blocksize < 0) {

    g_set_error(err, JINGLE_CHECK_ERROR, JINGLE_CHECK_ERROR_BADVALUE,

                "block-size is negative");

    g_free(ibb);

    return NULL;

  }

  return (gconstpointer) ibb;

}

static void jingle_ibb_init(void)

{

  jingle_register_transport(NS_JINGLE_TRANSPORT_IBB, &funcs, JINGLE_TRANS_IN_BAND, JINGLE_TRANS_TCP);

  xmpp_add_feature(NS_JINGLE_TRANSPORT_IBB);

}

static void jingle_ibb_uninit(void)

{

  xmpp_del_feature(NS_JINGLE_TRANSPORT_IBB);

  jingle_unregister_transport(NS_JINGLE_TRANSPORT_IBB);

}