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/* $Id$ */
/*
* Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com)
* Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org>
*
* 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 <pjsip/sip_util.h>
#include <pjsip/sip_module.h>
#include <pjsip/sip_endpoint.h>
#include <pjsip/sip_transaction.h>
#include <pjsip/sip_event.h>
#include <pjsip/sip_errno.h>
#include <pj/assert.h>
#include <pj/log.h>
#include <pj/pool.h>
#include <pj/string.h>
struct tsx_data
{
void *token;
void (*cb)(void*, pjsip_event*);
};
static void mod_util_on_tsx_state(pjsip_transaction*, pjsip_event*);
/* This module will be registered in pjsip_endpt.c */
pjsip_module mod_stateful_util =
{
NULL, NULL, /* prev, next. */
{ "mod-stateful-util", 17 }, /* Name. */
-1, /* Id */
PJSIP_MOD_PRIORITY_APPLICATION, /* Priority */
NULL, /* load() */
NULL, /* start() */
NULL, /* stop() */
NULL, /* unload() */
NULL, /* on_rx_request() */
NULL, /* on_rx_response() */
NULL, /* on_tx_request. */
NULL, /* on_tx_response() */
&mod_util_on_tsx_state, /* on_tsx_state() */
};
static void mod_util_on_tsx_state(pjsip_transaction *tsx, pjsip_event *event)
{
struct tsx_data *tsx_data;
/* Check if the module has been unregistered (see ticket #1535) and also
* verify the event type.
*/
if (mod_stateful_util.id < 0 || event->type != PJSIP_EVENT_TSX_STATE)
return;
tsx_data = (struct tsx_data*) tsx->mod_data[mod_stateful_util.id];
if (tsx_data == NULL)
return;
if (tsx->status_code < 200)
return;
/* Call the callback, if any, and prevent the callback to be called again
* by clearing the transaction's module_data.
*/
tsx->mod_data[mod_stateful_util.id] = NULL;
if (tsx_data->cb) {
(*tsx_data->cb)(tsx_data->token, event);
}
}
PJ_DEF(pj_status_t) pjsip_endpt_send_request( pjsip_endpoint *endpt,
pjsip_tx_data *tdata,
pj_int32_t timeout,
void *token,
pjsip_endpt_send_callback cb)
{
pjsip_transaction *tsx;
struct tsx_data *tsx_data;
pj_status_t status;
PJ_ASSERT_RETURN(endpt && tdata && (timeout==-1 || timeout>0), PJ_EINVAL);
/* Check that transaction layer module is registered to endpoint */
PJ_ASSERT_RETURN(mod_stateful_util.id != -1, PJ_EINVALIDOP);
PJ_UNUSED_ARG(timeout);
status = pjsip_tsx_create_uac(&mod_stateful_util, tdata, &tsx);
if (status != PJ_SUCCESS) {
pjsip_tx_data_dec_ref(tdata);
return status;
}
pjsip_tsx_set_transport(tsx, &tdata->tp_sel);
tsx_data = PJ_POOL_ALLOC_T(tsx->pool, struct tsx_data);
tsx_data->token = token;
tsx_data->cb = cb;
tsx->mod_data[mod_stateful_util.id] = tsx_data;
status = pjsip_tsx_send_msg(tsx, NULL);
if (status != PJ_SUCCESS)
pjsip_tx_data_dec_ref(tdata);
return status;
}
/*
* Send response statefully.
*/
PJ_DEF(pj_status_t) pjsip_endpt_respond( pjsip_endpoint *endpt,
pjsip_module *tsx_user,
pjsip_rx_data *rdata,
int st_code,
const pj_str_t *st_text,
const pjsip_hdr *hdr_list,
const pjsip_msg_body *body,
pjsip_transaction **p_tsx )
{
pj_status_t status;
pjsip_tx_data *tdata;
pjsip_transaction *tsx;
/* Validate arguments. */
PJ_ASSERT_RETURN(endpt && rdata, PJ_EINVAL);
if (p_tsx) *p_tsx = NULL;
/* Create response message */
status = pjsip_endpt_create_response( endpt, rdata, st_code, st_text,
&tdata);
if (status != PJ_SUCCESS)
return status;
/* Add the message headers, if any */
if (hdr_list) {
const pjsip_hdr *hdr = hdr_list->next;
while (hdr != hdr_list) {
pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr*)
pjsip_hdr_clone(tdata->pool, hdr) );
hdr = hdr->next;
}
}
/* Add the message body, if any. */
if (body) {
tdata->msg->body = pjsip_msg_body_clone( tdata->pool, body );
if (tdata->msg->body == NULL) {
pjsip_tx_data_dec_ref(tdata);
return status;
}
}
/* Create UAS transaction. */
status = pjsip_tsx_create_uas(tsx_user, rdata, &tsx);
if (status != PJ_SUCCESS) {
pjsip_tx_data_dec_ref(tdata);
return status;
}
/* Feed the request to the transaction. */
pjsip_tsx_recv_msg(tsx, rdata);
/* Send the message. */
status = pjsip_tsx_send_msg(tsx, tdata);
if (status != PJ_SUCCESS) {
pjsip_tx_data_dec_ref(tdata);
} else if (p_tsx) {
*p_tsx = tsx;
}
return status;
}
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