9ae9893c63
Correct typos of the following word families: identifying structures actcount initializer attributes statement enough locking declaration userevent provides unregister session execute searches verification suppressed prepared passwords recipients event because brief unidentified redundancy character the module reload operation backslashes accurate incorrect collision initializing instance interpreted buddies omitted manually requires queries generator scheduler configuration has owner resource performed masquerade apparently routable ASTERISK-29714 Change-Id: I88485116d2c59b776aa2e1f8b4ce8239a21decda
169 lines
4.8 KiB
C
169 lines
4.8 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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* Joshua Colp <jcolp@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_pjsip</depend>
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<depend>res_pjsip_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_pjsip.h"
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#include "asterisk/res_pjsip_session.h"
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#include "asterisk/module.h"
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#include "asterisk/causes.h"
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#include "asterisk/threadpool.h"
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static void rfc3326_use_reason_header(struct ast_sip_session *session, struct pjsip_rx_data *rdata)
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{
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static const pj_str_t str_reason = { "Reason", 6 };
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pjsip_generic_string_hdr *header;
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char buf[20];
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char *cause;
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char *text;
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int code;
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header = pjsip_msg_find_hdr_by_name(rdata->msg_info.msg, &str_reason, NULL);
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for (; header;
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header = pjsip_msg_find_hdr_by_name(rdata->msg_info.msg, &str_reason, header->next)) {
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ast_copy_pj_str(buf, &header->hvalue, sizeof(buf));
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cause = ast_skip_blanks(buf);
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if (strncasecmp(cause, "Q.850", 5) || !(cause = strstr(cause, "cause="))) {
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continue;
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}
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/* If text is present get rid of it */
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if ((text = strstr(cause, ";"))) {
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*text = '\0';
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}
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if (sscanf(cause, "cause=%30d", &code) != 1) {
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continue;
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}
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ast_channel_hangupcause_set(session->channel, code & 0x7f);
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break;
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}
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}
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static int rfc3326_incoming_request(struct ast_sip_session *session, struct pjsip_rx_data *rdata)
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{
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if ((pjsip_method_cmp(&rdata->msg_info.msg->line.req.method, &pjsip_bye_method) &&
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pjsip_method_cmp(&rdata->msg_info.msg->line.req.method, &pjsip_cancel_method)) ||
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!session->channel) {
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return 0;
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}
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rfc3326_use_reason_header(session, rdata);
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return 0;
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}
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static void rfc3326_incoming_response(struct ast_sip_session *session, struct pjsip_rx_data *rdata)
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{
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struct pjsip_status_line status = rdata->msg_info.msg->line.status;
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if ((status.code < 300) || !session->channel) {
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return;
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}
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rfc3326_use_reason_header(session, rdata);
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}
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static void rfc3326_add_reason_header(struct ast_sip_session *session, struct pjsip_tx_data *tdata)
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{
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char buf[20];
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if (ast_channel_hangupcause(session->channel) == AST_CAUSE_ANSWERED_ELSEWHERE) {
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ast_sip_add_header(tdata, "Reason", "SIP;cause=200;text=\"Call completed elsewhere\"");
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}
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if (session->endpoint && session->endpoint->suppress_q850_reason_headers) {
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ast_debug(1, "A Q.850 '%s'(%i) Reason header was suppressed for endpoint '%s'\n",
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ast_cause2str((ast_channel_hangupcause(session->channel) & 0x7f)),
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(ast_channel_hangupcause(session->channel) & 0x7f),
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ast_sorcery_object_get_id(session->endpoint));
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} else {
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snprintf(buf, sizeof(buf), "Q.850;cause=%i", ast_channel_hangupcause(session->channel) & 0x7f);
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ast_sip_add_header(tdata, "Reason", buf);
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}
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}
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static void rfc3326_outgoing_request(struct ast_sip_session *session, struct pjsip_tx_data *tdata)
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{
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if ((pjsip_method_cmp(&tdata->msg->line.req.method, &pjsip_bye_method)
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&& pjsip_method_cmp(&tdata->msg->line.req.method, &pjsip_cancel_method))
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|| !session->channel
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/*
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* The session->channel has been seen to go away on us between
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* checks so we must also be running under the call's serializer
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* thread.
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*/
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|| session->serializer != ast_threadpool_serializer_get_current()) {
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return;
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}
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rfc3326_add_reason_header(session, tdata);
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}
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static void rfc3326_outgoing_response(struct ast_sip_session *session, struct pjsip_tx_data *tdata)
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{
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struct pjsip_status_line status = tdata->msg->line.status;
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if (status.code < 300
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|| !session->channel
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|| session->serializer != ast_threadpool_serializer_get_current()) {
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return;
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}
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rfc3326_add_reason_header(session, tdata);
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}
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static struct ast_sip_session_supplement rfc3326_supplement = {
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.incoming_request = rfc3326_incoming_request,
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.incoming_response = rfc3326_incoming_response,
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.outgoing_request = rfc3326_outgoing_request,
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.outgoing_response = rfc3326_outgoing_response,
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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(&rfc3326_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(&rfc3326_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, "PJSIP RFC3326 Support",
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.support_level = AST_MODULE_SUPPORT_CORE,
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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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.requires = "res_pjsip,res_pjsip_session",
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);
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