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/* $Id: rtpproxy_stream.c,v 1.2 2008/11/04 22:28:04 sobomax Exp $
*
* Copyright (C) 2008 Sippy Software, Inc., http://www.sippysoft.com
*
* This file is part of ser, a free SIP server.
*
* ser 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
*
* For a license to use the ser software under conditions
* other than those described here, or to purchase support for this
* software, please contact iptel.org by e-mail at the following addresses:
* info@iptel.org
*
* ser 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include <stdio.h>
#include <sys/uio.h>
#include "../../ip_addr.h"
#include "../../parser/msg_parser.h"
#include "../../sr_module.h"
#include "../../ut.h"
#include "rtpproxy.h"
#include "rtpproxy_funcs.h"
int
fixup_var_str_int(void **param, int param_no)
{
int ret;
pv_elem_t *model;
str s;
if (param_no == 1) {
model = NULL;
s.s = (char *)(*param);
s.len = strlen(s.s);
if (pv_parse_format(&s, &model) < 0) {
LM_ERR("wrong format[%s]!\n", (char *)(*param));
return E_UNSPEC;
}
if (model == NULL) {
LM_ERR("empty parameter!\n");
return E_UNSPEC;
}
*param = (void *)model;
} else if (param_no == 2) {
/* According to
* http://www.kamailio.org/docs/modules/1.5.x/nathelper.html#rtpproxy_stream2xxx
* this could be -1 */
s.s = (char *)(*param);
s.len = strlen(s.s);
if (str2sint(&s, &ret)==0) {
pkg_free(*param);
*param = (void *)(long)ret;
} else {
LM_ERR("bad number <%s>\n", (char *)(*param));
return E_CFG;
}
}
return 0;
}
static int
rtpproxy_stream(struct sip_msg* msg, str *pname, int count, int stream2uac)
{
int nitems;
str callid, from_tag, to_tag;
struct rtpp_node *node;
char cbuf[16];
struct iovec v[] = {
{NULL, 0},
{cbuf, 0}, /* 1 P<count> */
{" ", 1},
{NULL, 0}, /* 3 callid */
{" ", 1},
{NULL, 0}, /* 5 pname */
{" session ", 9},
{NULL, 0}, /* 7 from tag */
{";1 ", 3},
{NULL, 0}, /* 9 to tag */
{";1", 2}
};
if (get_callid(msg, &callid) == -1 || callid.len == 0) {
LM_ERR("can't get Call-Id field\n");
return -1;
}
if (get_to_tag(msg, &to_tag) == -1) {
LM_ERR("can't get To tag\n");
return -1;
}
if (get_from_tag(msg, &from_tag) == -1 || from_tag.len == 0) {
LM_ERR("can't get From tag\n");
return -1;
}
v[1].iov_len = sprintf(cbuf, "P%d", count);
STR2IOVEC(callid, v[3]);
STR2IOVEC(*pname, v[5]);
node = select_rtpp_node(callid, 1);
if (!node) {
LM_ERR("no available proxies\n");
return -1;
}
if (node->rn_ptl_supported == 0) {
LM_ERR("required functionality is not "
"supported by the version of the RTPproxy running on the selected "
"node. Please upgrade the RTPproxy and try again.\n");
return -1;
}
set_rtp_inst_pvar(msg, &node->rn_url);
nitems = 11;
if (stream2uac == 0) {
if (to_tag.len == 0)
return -1;
STR2IOVEC(to_tag, v[7]);
STR2IOVEC(from_tag, v[9]);
} else {
STR2IOVEC(from_tag, v[7]);
STR2IOVEC(to_tag, v[9]);
if (to_tag.len <= 0)
nitems -= 2;
}
send_rtpp_command(node, v, nitems);
return 1;
}
static int
rtpproxy_stream2_f(struct sip_msg *msg, char *str1, int count, int stream2uac)
{
str pname;
if (str1 == NULL || pv_printf_s(msg, (pv_elem_p)str1, &pname) != 0)
return -1;
return rtpproxy_stream(msg, &pname, count, stream2uac);
}
int
rtpproxy_stream2uac2_f(struct sip_msg* msg, char* str1, char* str2)
{
return rtpproxy_stream2_f(msg, str1, (int)(long)str2, 1);
}
int
rtpproxy_stream2uas2_f(struct sip_msg* msg, char* str1, char* str2)
{
return rtpproxy_stream2_f(msg, str1, (int)(long)str2, 0);
}
static int
rtpproxy_stop_stream(struct sip_msg* msg, int stream2uac)
{
int nitems;
str callid, from_tag, to_tag;
struct rtpp_node *node;
struct iovec v[] = {
{NULL, 0},
{"S", 1}, /* 1 */
{" ", 1},
{NULL, 0}, /* 3 callid */
{" ", 1},
{NULL, 0}, /* 5 from tag */
{";1 ", 3},
{NULL, 0}, /* 7 to tag */
{";1", 2}
};
if (get_callid(msg, &callid) == -1 || callid.len == 0) {
LM_ERR("can't get Call-Id field\n");
return -1;
}
if (get_to_tag(msg, &to_tag) == -1) {
LM_ERR("can't get To tag\n");
return -1;
}
if (get_from_tag(msg, &from_tag) == -1 || from_tag.len == 0) {
LM_ERR("can't get From tag\n");
return -1;
}
STR2IOVEC(callid, v[3]);
node = select_rtpp_node(callid, 1);
if (!node) {
LM_ERR("no available proxies\n");
return -1;
}
if (node->rn_ptl_supported == 0) {
LM_ERR("required functionality is not "
"supported by the version of the RTPproxy running on the selected "
"node. Please upgrade the RTPproxy and try again.\n");
return -1;
}
set_rtp_inst_pvar(msg, &node->rn_url);
nitems = 9;
if (stream2uac == 0) {
if (to_tag.len == 0)
return -1;
STR2IOVEC(to_tag, v[5]);
STR2IOVEC(from_tag, v[7]);
} else {
STR2IOVEC(from_tag, v[5]);
STR2IOVEC(to_tag, v[7]);
if (to_tag.len <= 0)
nitems -= 2;
}
send_rtpp_command(node, v, nitems);
return 1;
}
int
rtpproxy_stop_stream2uac2_f(struct sip_msg* msg, char* str1, char* str2)
{
return rtpproxy_stop_stream(msg, 1);
}
int
rtpproxy_stop_stream2uas2_f(struct sip_msg* msg, char* str1, char* str2)
{
return rtpproxy_stop_stream(msg, 0);
}
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