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/*
* Off-the-Record Messaging library
* Copyright (C) 2004-2012 Ian Goldberg, Chris Alexander, Willy Lew,
* Nikita Borisov
* <otr@cypherpunks.ca>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of version 2.1 of the GNU Lesser General
* Public License as published by the Free Software Foundation.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/* system headers */
#include <stdlib.h>
#include <assert.h>
/* libgcrypt headers */
#include <gcrypt.h>
/* libotr headers */
#include "context_priv.h"
/* Create a new private connection context */
ConnContextPriv *otrl_context_priv_new()
{
ConnContextPriv *context_priv;
context_priv = malloc(sizeof(*context_priv));
assert(context_priv != NULL);
context_priv->fragment = NULL;
context_priv->fragment_len = 0;
context_priv->fragment_n = 0;
context_priv->fragment_k = 0;
context_priv->numsavedkeys = 0;
context_priv->saved_mac_keys = NULL;
context_priv->generation = 0;
context_priv->lastsent = 0;
context_priv->lastmessage = NULL;
context_priv->lastrecv = 0;
context_priv->may_retransmit = 0;
context_priv->their_keyid = 0;
context_priv->their_y = NULL;
context_priv->their_old_y = NULL;
context_priv->our_keyid = 0;
context_priv->our_dh_key.groupid = 0;
context_priv->our_dh_key.priv = NULL;
context_priv->our_dh_key.pub = NULL;
context_priv->our_old_dh_key.groupid = 0;
context_priv->our_old_dh_key.priv = NULL;
context_priv->our_old_dh_key.pub = NULL;
otrl_dh_session_blank(&(context_priv->sesskeys[0][0]));
otrl_dh_session_blank(&(context_priv->sesskeys[0][1]));
otrl_dh_session_blank(&(context_priv->sesskeys[1][0]));
otrl_dh_session_blank(&(context_priv->sesskeys[1][1]));
return context_priv;
}
/* Resets the appropriate variables when a context
* is being force finished
*/
void otrl_context_priv_force_finished(ConnContextPriv *context_priv)
{
free(context_priv->fragment);
context_priv->fragment = NULL;
context_priv->fragment_len = 0;
context_priv->fragment_n = 0;
context_priv->fragment_k = 0;
context_priv->numsavedkeys = 0;
free(context_priv->saved_mac_keys);
context_priv->saved_mac_keys = NULL;
gcry_free(context_priv->lastmessage);
context_priv->lastmessage = NULL;
context_priv->may_retransmit = 0;
context_priv->their_keyid = 0;
gcry_mpi_release(context_priv->their_y);
context_priv->their_y = NULL;
gcry_mpi_release(context_priv->their_old_y);
context_priv->their_old_y = NULL;
context_priv->our_keyid = 0;
otrl_dh_keypair_free(&(context_priv->our_dh_key));
otrl_dh_keypair_free(&(context_priv->our_old_dh_key));
otrl_dh_session_free(&(context_priv->sesskeys[0][0]));
otrl_dh_session_free(&(context_priv->sesskeys[0][1]));
otrl_dh_session_free(&(context_priv->sesskeys[1][0]));
otrl_dh_session_free(&(context_priv->sesskeys[1][1]));
}