77002bc377
1. Security events 2. Websocket support 3. Diversion header + redirecting support 4. An anonymous endpoint identifier 5. Inbound extension state subscription support 6. PIDF notify generation 7. One touch recording support (special thanks Sean Bright!) 8. Blind and attended transfer support 9. Automatic inbound registration expiration 10. SRTP support 11. Media offer control dialplan function 12. Connected line support 13. SendText() support 14. Qualify support 15. Inband DTMF detection 16. Call and pickup groups 17. Messaging support Thanks everyone! Side note: I'm reminded of the song "How Far We've Come" by Matchbox Twenty. git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@392565 65c4cc65-6c06-0410-ace0-fbb531ad65f3
130 lines
3 KiB
C
130 lines
3 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2013, Digium, Inc.
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*
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* Jason Parker <jparker@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*** MODULEINFO
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<depend>pjproject</depend>
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<depend>res_sip</depend>
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<depend>res_sip_session</depend>
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<support_level>core</support_level>
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***/
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#include "asterisk.h"
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#include <pjsip.h>
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#include <pjsip_ua.h>
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#include "asterisk/res_sip.h"
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#include "asterisk/res_sip_session.h"
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#include "asterisk/module.h"
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static int dtmf_info_incoming_request(struct ast_sip_session *session, struct pjsip_rx_data *rdata)
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{
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int res = 0;
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pjsip_msg_body *body = rdata->msg_info.msg->body;
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pjsip_tx_data *tdata;
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char buf[body->len];
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char *cur = buf;
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char *line;
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char event = '\0';
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unsigned int duration = 0;
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if (!ast_sip_is_content_type(&body->content_type, "application", "dtmf-relay")) {
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return 0;
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}
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body->print_body(body, buf, body->len);
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while ((line = strsep(&cur, "\r\n"))) {
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char *c;
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if (!(c = strchr(line, '='))) {
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continue;
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}
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*c++ = '\0';
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c = ast_skip_blanks(c);
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if (!strcasecmp(line, "signal")) {
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if (c[0] == '!' || c[0] == '*' || c[0] == '#' ||
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('0' <= c[0] && c[0] <= '9') ||
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('A' <= c[0] && c[0] <= 'D') ||
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('a' <= c[0] && c[0] <= 'd')) {
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event = c[0];
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} else {
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ast_log(LOG_ERROR, "Invalid DTMF event signal in INFO message.\n");
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res = -1;
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break;
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}
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} else if (!strcasecmp(line, "duration")) {
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sscanf(c, "%30u", &duration);
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}
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}
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if (!duration) {
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duration = 100;
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}
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if (event == '!') {
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struct ast_frame f = { AST_FRAME_CONTROL, { AST_CONTROL_FLASH, } };
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ast_queue_frame(session->channel, &f);
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} else if (event != '\0') {
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struct ast_frame f = { AST_FRAME_DTMF, };
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f.len = duration;
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f.subclass.integer = event;
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ast_queue_frame(session->channel, &f);
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} else {
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res = -1;
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}
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if (pjsip_dlg_create_response(session->inv_session->dlg, rdata, !res ? 200 : 500, NULL, &tdata) == PJ_SUCCESS) {
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struct pjsip_transaction *tsx = pjsip_rdata_get_tsx(rdata);
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pjsip_dlg_send_response(session->inv_session->dlg, tsx, tdata);
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}
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return res;
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}
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static struct ast_sip_session_supplement dtmf_info_supplement = {
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.method = "INFO",
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.incoming_request = dtmf_info_incoming_request,
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};
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static int load_module(void)
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{
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ast_sip_session_register_supplement(&dtmf_info_supplement);
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return AST_MODULE_LOAD_SUCCESS;
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}
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static int unload_module(void)
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{
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ast_sip_session_unregister_supplement(&dtmf_info_supplement);
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return 0;
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}
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AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "SIP DTMF INFO Support",
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.load = load_module,
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.unload = unload_module,
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.load_pri = AST_MODPRI_APP_DEPEND,
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);
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