131 lines
3.0 KiB
C
131 lines
3.0 KiB
C
/*
|
|
* Asterisk -- An open source telephony toolkit.
|
|
*
|
|
* Copyright (C) 2013, Digium, Inc.
|
|
*
|
|
* Jason Parker <jparker@digium.com>
|
|
*
|
|
* See http://www.asterisk.org for more information about
|
|
* the Asterisk project. Please do not directly contact
|
|
* any of the maintainers of this project for assistance;
|
|
* the project provides a web site, mailing lists and IRC
|
|
* channels for your use.
|
|
*
|
|
* This program is free software, distributed under the terms of
|
|
* the GNU General Public License Version 2. See the LICENSE file
|
|
* at the top of the source tree.
|
|
*/
|
|
|
|
/*** MODULEINFO
|
|
<depend>pjproject</depend>
|
|
<depend>res_sip</depend>
|
|
<depend>res_sip_session</depend>
|
|
<support_level>core</support_level>
|
|
***/
|
|
|
|
#include "asterisk.h"
|
|
|
|
#include <pjsip.h>
|
|
#include <pjsip_ua.h>
|
|
|
|
#include "asterisk/res_sip.h"
|
|
#include "asterisk/res_sip_session.h"
|
|
#include "asterisk/module.h"
|
|
|
|
static int dtmf_info_incoming_request(struct ast_sip_session *session, struct pjsip_rx_data *rdata)
|
|
{
|
|
int res = 0;
|
|
pjsip_msg_body *body = rdata->msg_info.msg->body;
|
|
|
|
pjsip_tx_data *tdata;
|
|
|
|
char buf[body->len];
|
|
char *cur = buf;
|
|
char *line;
|
|
|
|
char event = '\0';
|
|
unsigned int duration = 0;
|
|
|
|
if (pj_strcmp2(&body->content_type.type, "application") ||
|
|
pj_strcmp2(&body->content_type.subtype, "dtmf-relay")) {
|
|
return 0;
|
|
}
|
|
|
|
body->print_body(body, buf, body->len);
|
|
|
|
while ((line = strsep(&cur, "\r\n"))) {
|
|
char *c;
|
|
|
|
if (!(c = strchr(line, '='))) {
|
|
continue;
|
|
}
|
|
*c++ = '\0';
|
|
|
|
c = ast_skip_blanks(c);
|
|
|
|
if (!strcasecmp(line, "signal")) {
|
|
if (c[0] == '!' || c[0] == '*' || c[0] == '#' ||
|
|
('0' <= c[0] && c[0] <= '9') ||
|
|
('A' <= c[0] && c[0] <= 'D') ||
|
|
('a' <= c[0] && c[0] <= 'd')) {
|
|
event = c[0];
|
|
} else {
|
|
ast_log(LOG_ERROR, "Invalid DTMF event signal in INFO message.\n");
|
|
res = -1;
|
|
break;
|
|
}
|
|
} else if (!strcasecmp(line, "duration")) {
|
|
sscanf(c, "%30u", &duration);
|
|
}
|
|
}
|
|
|
|
if (!duration) {
|
|
duration = 100;
|
|
}
|
|
|
|
if (event == '!') {
|
|
struct ast_frame f = { AST_FRAME_CONTROL, { AST_CONTROL_FLASH, } };
|
|
|
|
ast_queue_frame(session->channel, &f);
|
|
} else if (event != '\0') {
|
|
struct ast_frame f = { AST_FRAME_DTMF, };
|
|
f.len = duration;
|
|
f.subclass.integer = event;
|
|
|
|
ast_queue_frame(session->channel, &f);
|
|
} else {
|
|
res = -1;
|
|
}
|
|
|
|
if (pjsip_dlg_create_response(session->inv_session->dlg, rdata, !res ? 200 : 500, NULL, &tdata) == PJ_SUCCESS) {
|
|
struct pjsip_transaction *tsx = pjsip_rdata_get_tsx(rdata);
|
|
|
|
pjsip_dlg_send_response(session->inv_session->dlg, tsx, tdata);
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static struct ast_sip_session_supplement dtmf_info_supplement = {
|
|
.method = "INFO",
|
|
.incoming_request = dtmf_info_incoming_request,
|
|
};
|
|
|
|
static int load_module(void)
|
|
{
|
|
ast_sip_session_register_supplement(&dtmf_info_supplement);
|
|
return AST_MODULE_LOAD_SUCCESS;
|
|
}
|
|
|
|
static int unload_module(void)
|
|
{
|
|
ast_sip_session_unregister_supplement(&dtmf_info_supplement);
|
|
return 0;
|
|
}
|
|
|
|
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "SIP DTMF INFO Support",
|
|
.load = load_module,
|
|
.unload = unload_module,
|
|
.load_pri = AST_MODPRI_APP_DEPEND,
|
|
);
|