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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2013, Digium, Inc.
*
* Mark Michelson <mmichelson@digium.com>
* Joshua Colp <jcolp@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_pjsip</depend>
<support_level>core</support_level>
***/
#include "asterisk.h"
#include <pjsip.h>
#include "asterisk/res_pjsip.h"
#include "asterisk/module.h"
static int get_endpoint_details(pjsip_rx_data *rdata, char *domain, size_t domain_size)
{
pjsip_uri *from = rdata->msg_info.from->uri;
pjsip_sip_uri *sip_from;
if (!PJSIP_URI_SCHEME_IS_SIP(from) && !PJSIP_URI_SCHEME_IS_SIPS(from)) {
return -1;
}
sip_from = (pjsip_sip_uri *) pjsip_uri_get_uri(from);
ast_copy_pj_str(domain, &sip_from->host, domain_size);
return 0;
}
static int find_transport_in_use(void *obj, void *arg, int flags)
{
struct ast_sip_transport *transport = obj;
pjsip_rx_data *rdata = arg;
if ((transport->state->transport == rdata->tp_info.transport) ||
(transport->state->factory && !pj_strcmp(&transport->state->factory->addr_name.host, &rdata->tp_info.transport->local_name.host) &&
transport->state->factory->addr_name.port == rdata->tp_info.transport->local_name.port)) {
return CMP_MATCH | CMP_STOP;
}
return 0;
}
static struct ast_sip_endpoint *anonymous_identify(pjsip_rx_data *rdata)
{
char domain_name[64], id[AST_UUID_STR_LEN];
struct ast_sip_endpoint *endpoint;
RAII_VAR(struct ast_sip_domain_alias *, alias, NULL, ao2_cleanup);
RAII_VAR(struct ao2_container *, transports, NULL, ao2_cleanup);
RAII_VAR(struct ast_sip_transport *, transport, NULL, ao2_cleanup);
if (get_endpoint_details(rdata, domain_name, sizeof(domain_name))) {
return NULL;
}
/* Attempt to find the endpoint given the name and domain provided */
snprintf(id, sizeof(id), "anonymous@%s", domain_name);
if ((endpoint = ast_sorcery_retrieve_by_id(ast_sip_get_sorcery(), "endpoint", id))) {
goto done;
}
/* See if an alias exists for the domain provided */
if ((alias = ast_sorcery_retrieve_by_id(ast_sip_get_sorcery(), "domain_alias", domain_name))) {
snprintf(id, sizeof(id), "anonymous@%s", alias->domain);
if ((endpoint = ast_sorcery_retrieve_by_id(ast_sip_get_sorcery(), "endpoint", id))) {
goto done;
}
}
/* See if the transport this came in on has a provided domain */
if ((transports = ast_sorcery_retrieve_by_fields(ast_sip_get_sorcery(), "transport", AST_RETRIEVE_FLAG_MULTIPLE | AST_RETRIEVE_FLAG_ALL, NULL)) &&
(transport = ao2_callback(transports, 0, find_transport_in_use, rdata)) &&
!ast_strlen_zero(transport->domain)) {
snprintf(id, sizeof(id), "anonymous@%s", transport->domain);
if ((endpoint = ast_sorcery_retrieve_by_id(ast_sip_get_sorcery(), "endpoint", id))) {
goto done;
}
}
/* Fall back to no domain */
endpoint = ast_sorcery_retrieve_by_id(ast_sip_get_sorcery(), "endpoint", "anonymous");
done:
if (endpoint) {
ast_debug(3, "Retrieved anonymous endpoint '%s'\n", ast_sorcery_object_get_id(endpoint));
}
return endpoint;
}
static struct ast_sip_endpoint_identifier anonymous_identifier = {
.identify_endpoint = anonymous_identify,
};
static int load_module(void)
{
ast_sip_register_endpoint_identifier(&anonymous_identifier);
return AST_MODULE_LOAD_SUCCESS;
}
static int unload_module(void)
{
ast_sip_unregister_endpoint_identifier(&anonymous_identifier);
return 0;
}
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "PJSIP Anonymous endpoint identifier",
.load = load_module,
.unload = unload_module,
.load_pri = AST_MODPRI_DEFAULT,
);
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