res_pjsip_rfc3326.c File Reference

#include "asterisk.h"
#include <pjsip.h>
#include <pjsip_ua.h>
#include "asterisk/res_pjsip.h"
#include "asterisk/res_pjsip_session.h"
#include "asterisk/module.h"
#include "asterisk/causes.h"
#include "asterisk/threadpool.h"

Include dependency graph for res_pjsip_rfc3326.c:

Go to the source code of this file.

Functions
static void	__reg_module (void)
static void	__unreg_module (void)
struct ast_module *	AST_MODULE_SELF_SYM (void)
static int	load_module (void)
static void	rfc3326_add_reason_header (struct ast_sip_session *session, struct pjsip_tx_data *tdata)
static int	rfc3326_incoming_request (struct ast_sip_session *session, struct pjsip_rx_data *rdata)
static void	rfc3326_incoming_response (struct ast_sip_session *session, struct pjsip_rx_data *rdata)
static void	rfc3326_outgoing_request (struct ast_sip_session *session, struct pjsip_tx_data *tdata)
static void	rfc3326_outgoing_response (struct ast_sip_session *session, struct pjsip_tx_data *tdata)
static void	rfc3326_use_reason_header (struct ast_sip_session *session, struct pjsip_rx_data *rdata)
static int	unload_module (void)

Variables
static struct ast_module_info	__mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "PJSIP RFC3326 Support" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = AST_BUILDOPT_SUM, .support_level = AST_MODULE_SUPPORT_CORE, .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_APP_DEPEND, .requires = "res_pjsip,res_pjsip_session", }
static const struct ast_module_info *	ast_module_info = &__mod_info
static struct ast_sip_session_supplement	rfc3326_supplement

Function Documentation

__reg_module()

static void __reg_module ( void  )

static

Definition at line 167 of file res_pjsip_rfc3326.c.

__unreg_module()

static void __unreg_module ( void  )

static

Definition at line 167 of file res_pjsip_rfc3326.c.

AST_MODULE_SELF_SYM()

struct ast_module * AST_MODULE_SELF_SYM

(

void

)

Definition at line 167 of file res_pjsip_rfc3326.c.

load_module()

static int load_module ( void  )

static

Definition at line 149 of file res_pjsip_rfc3326.c.

{
    ast_sip_session_register_supplement(&rfc3326_supplement);
    return AST_MODULE_LOAD_SUCCESS;
}

References AST_MODULE_LOAD_SUCCESS, ast_sip_session_register_supplement, and rfc3326_supplement.

rfc3326_add_reason_header()

static void rfc3326_add_reason_header ( struct ast_sip_session *  session, struct pjsip_tx_data *  tdata  )

static

Definition at line 93 of file res_pjsip_rfc3326.c.

{
    char buf[20];
 
    if (ast_channel_hangupcause(session->channel) == AST_CAUSE_ANSWERED_ELSEWHERE) {
        ast_sip_add_header(tdata, "Reason", "SIP;cause=200;text=\"Call completed elsewhere\"");
    }
 
    if (session->endpoint && session->endpoint->suppress_q850_reason_headers) {
        ast_debug(1, "A Q.850 '%s'(%i) Reason header was suppressed for endpoint '%s'\n",
            ast_cause2str((ast_channel_hangupcause(session->channel) & 0x7f)),
            (ast_channel_hangupcause(session->channel) & 0x7f),
            ast_sorcery_object_get_id(session->endpoint));
    } else {
        snprintf(buf, sizeof(buf), "Q.850;cause=%i", ast_channel_hangupcause(session->channel) & 0x7f);
        ast_sip_add_header(tdata, "Reason", buf);
    }
}

References ast_cause2str(), AST_CAUSE_ANSWERED_ELSEWHERE, ast_channel_hangupcause(), ast_debug, ast_sip_add_header(), ast_sorcery_object_get_id(), buf, and session.

Referenced by rfc3326_outgoing_request(), and rfc3326_outgoing_response().

rfc3326_incoming_request()

static int rfc3326_incoming_request ( struct ast_sip_session *  session, struct pjsip_rx_data *  rdata  )

static

Definition at line 69 of file res_pjsip_rfc3326.c.

{
    if ((pjsip_method_cmp(&rdata->msg_info.msg->line.req.method, &pjsip_bye_method) &&
         pjsip_method_cmp(&rdata->msg_info.msg->line.req.method, &pjsip_cancel_method)) ||
        !session->channel) {
        return 0;
    }
 
    rfc3326_use_reason_header(session, rdata);
 
    return 0;
}

References rfc3326_use_reason_header(), and session.

rfc3326_incoming_response()

static void rfc3326_incoming_response ( struct ast_sip_session *  session, struct pjsip_rx_data *  rdata  )

static

Definition at line 82 of file res_pjsip_rfc3326.c.

{
    struct pjsip_status_line status = rdata->msg_info.msg->line.status;
 
    if ((status.code < 300) || !session->channel) {
        return;
    }
 
    rfc3326_use_reason_header(session, rdata);
}

References rfc3326_use_reason_header(), session, and status.

rfc3326_outgoing_request()

static void rfc3326_outgoing_request ( struct ast_sip_session *  session, struct pjsip_tx_data *  tdata  )

static

Definition at line 112 of file res_pjsip_rfc3326.c.

{
    if ((pjsip_method_cmp(&tdata->msg->line.req.method, &pjsip_bye_method)
            && pjsip_method_cmp(&tdata->msg->line.req.method, &pjsip_cancel_method))
        || !session->channel
        /*
         * The session->channel has been seen to go away on us between
         * checks so we must also be running under the call's serializer
         * thread.
         */
        || session->serializer != ast_threadpool_serializer_get_current()) {
        return;
    }
 
    rfc3326_add_reason_header(session, tdata);
}

References ast_threadpool_serializer_get_current(), rfc3326_add_reason_header(), and session.

rfc3326_outgoing_response()

static void rfc3326_outgoing_response ( struct ast_sip_session *  session, struct pjsip_tx_data *  tdata  )

static

Definition at line 129 of file res_pjsip_rfc3326.c.

{
    struct pjsip_status_line status = tdata->msg->line.status;
 
    if (status.code < 300
        || !session->channel
        || session->serializer != ast_threadpool_serializer_get_current()) {
        return;
    }
 
    rfc3326_add_reason_header(session, tdata);
}

References ast_threadpool_serializer_get_current(), rfc3326_add_reason_header(), session, and status.

rfc3326_use_reason_header()

static void rfc3326_use_reason_header ( struct ast_sip_session *  session, struct pjsip_rx_data *  rdata  )

static

Definition at line 37 of file res_pjsip_rfc3326.c.

{
    static const pj_str_t str_reason = { "Reason", 6 };
    pjsip_generic_string_hdr *header;
    char buf[20];
    char *cause;
    int code_q850 = 0, code_sip = 0;
 
    header = pjsip_msg_find_hdr_by_name(rdata->msg_info.msg, &str_reason, NULL);
    for (; header;
        header = pjsip_msg_find_hdr_by_name(rdata->msg_info.msg, &str_reason, header->next)) {
        int cause_q850, cause_sip;
        ast_copy_pj_str(buf, &header->hvalue, sizeof(buf));
        cause = ast_skip_blanks(buf);
 
        cause_q850 = !strncasecmp(cause, "Q.850", 5);
        cause_sip = !strncasecmp(cause, "SIP", 3);
        if ((cause_q850 || cause_sip) && (cause = strstr(cause, "cause="))) {
            int *code = cause_q850 ? &code_q850 : &code_sip;
            if (sscanf(cause, "cause=%30d", code) != 1) {
                *code = 0;
            }
        }
    }
 
    if (code_q850) {
        ast_channel_hangupcause_set(session->channel, code_q850 & 0x7f);
    } else if (code_sip) {
        ast_channel_hangupcause_set(session->channel, ast_sip_hangup_sip2cause(code_sip));
    }
}

References ast_channel_hangupcause_set(), ast_copy_pj_str(), ast_sip_hangup_sip2cause(), ast_skip_blanks(), buf, header::next, NULL, and session.

Referenced by rfc3326_incoming_request(), and rfc3326_incoming_response().

unload_module()

static int unload_module ( void  )

static

Definition at line 155 of file res_pjsip_rfc3326.c.

{
    ast_sip_session_unregister_supplement(&rfc3326_supplement);
    return 0;
}

References ast_sip_session_unregister_supplement(), and rfc3326_supplement.

Variable Documentation

__mod_info

struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "PJSIP RFC3326 Support" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = AST_BUILDOPT_SUM, .support_level = AST_MODULE_SUPPORT_CORE, .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_APP_DEPEND, .requires = "res_pjsip,res_pjsip_session", }

static

Definition at line 167 of file res_pjsip_rfc3326.c.

ast_module_info

const struct ast_module_info* ast_module_info = &__mod_info

static

Definition at line 167 of file res_pjsip_rfc3326.c.

rfc3326_supplement

struct ast_sip_session_supplement rfc3326_supplement

static

Definition at line 142 of file res_pjsip_rfc3326.c.

Referenced by load_module(), and unload_module().