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							130 lines
						
					
					
						
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							130 lines
						
					
					
						
							4.1 KiB
						
					
					
				| /*
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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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|  * Mark Michelson <mmichelson@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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| 
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| /*** MODULEINFO
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| 	<depend>pjproject</depend>
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| 	<depend>res_pjsip</depend>
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| 	<support_level>core</support_level>
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|  ***/
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| 
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| #include "asterisk.h"
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| 
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| #include <pjsip.h>
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| 
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| #include "asterisk/res_pjsip.h"
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| #include "asterisk/module.h"
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| 
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| static int get_endpoint_details(pjsip_rx_data *rdata, char *endpoint, size_t endpoint_size, char *domain, size_t domain_size)
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| {
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| 	pjsip_uri *from = rdata->msg_info.from->uri;
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| 	pjsip_sip_uri *sip_from;
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| 	if (!PJSIP_URI_SCHEME_IS_SIP(from) && !PJSIP_URI_SCHEME_IS_SIPS(from)) {
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| 		return -1;
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| 	}
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| 	sip_from = (pjsip_sip_uri *) pjsip_uri_get_uri(from);
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| 	ast_copy_pj_str(endpoint, &sip_from->user, endpoint_size);
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| 	ast_copy_pj_str(domain, &sip_from->host, domain_size);
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| 	return 0;
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| }
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| 
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| static int find_transport_in_use(void *obj, void *arg, int flags)
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| {
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| 	struct ast_sip_transport *transport = obj;
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| 	pjsip_rx_data *rdata = arg;
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| 
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| 	if ((transport->state->transport == rdata->tp_info.transport) ||
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| 		(transport->state->factory && !pj_strcmp(&transport->state->factory->addr_name.host, &rdata->tp_info.transport->local_name.host) &&
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| 			transport->state->factory->addr_name.port == rdata->tp_info.transport->local_name.port)) {
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| 		return CMP_MATCH | CMP_STOP;
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| 	}
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| 
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| 	return 0;
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| }
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| 
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| static struct ast_sip_endpoint *username_identify(pjsip_rx_data *rdata)
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| {
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| 	char endpoint_name[64], domain_name[64], id[AST_UUID_STR_LEN];
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| 	struct ast_sip_endpoint *endpoint;
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| 	RAII_VAR(struct ast_sip_domain_alias *, alias, NULL, ao2_cleanup);
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| 	RAII_VAR(struct ao2_container *, transports, NULL, ao2_cleanup);
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| 	RAII_VAR(struct ast_sip_transport *, transport, NULL, ao2_cleanup);
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| 
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| 	if (get_endpoint_details(rdata, endpoint_name, sizeof(endpoint_name), domain_name, sizeof(domain_name))) {
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| 		return NULL;
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| 	}
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| 
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| 	/* Attempt to find the endpoint given the name and domain provided */
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| 	snprintf(id, sizeof(id), "%s@%s", endpoint_name, domain_name);
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| 	if ((endpoint = ast_sorcery_retrieve_by_id(ast_sip_get_sorcery(), "endpoint", id))) {
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| 		goto done;
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| 	}
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| 
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| 	/* See if an alias exists for the domain provided */
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| 	if ((alias = ast_sorcery_retrieve_by_id(ast_sip_get_sorcery(), "domain_alias", domain_name))) {
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| 		snprintf(id, sizeof(id), "%s@%s", endpoint_name, alias->domain);
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| 		if ((endpoint = ast_sorcery_retrieve_by_id(ast_sip_get_sorcery(), "endpoint", id))) {
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| 			goto done;
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| 		}
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| 	}
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| 
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| 	/* See if the transport this came in on has a provided domain */
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| 	if ((transports = ast_sorcery_retrieve_by_fields(ast_sip_get_sorcery(), "transport", AST_RETRIEVE_FLAG_MULTIPLE | AST_RETRIEVE_FLAG_ALL, NULL)) &&
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| 		(transport = ao2_callback(transports, 0, find_transport_in_use, rdata)) &&
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| 		!ast_strlen_zero(transport->domain)) {
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| 		snprintf(id, sizeof(id), "%s@%s", endpoint_name, transport->domain);
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| 		if ((endpoint = ast_sorcery_retrieve_by_id(ast_sip_get_sorcery(), "endpoint", id))) {
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| 			goto done;
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| 		}
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| 	}
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| 
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| 	/* Fall back to no domain */
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| 	endpoint = ast_sorcery_retrieve_by_id(ast_sip_get_sorcery(), "endpoint", endpoint_name);
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| 
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| done:
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| 	if (endpoint) {
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| 		if (!(endpoint->ident_method & AST_SIP_ENDPOINT_IDENTIFY_BY_USERNAME)) {
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| 			ao2_ref(endpoint, -1);
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| 			return NULL;
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| 		}
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| 		ast_debug(3, "Retrieved endpoint %s\n", ast_sorcery_object_get_id(endpoint));
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| 	}
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| 	return endpoint;
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| }
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| 
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| static struct ast_sip_endpoint_identifier username_identifier = {
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| 	.identify_endpoint = username_identify,
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| };
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| 
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| static int load_module(void)
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| {
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| 	ast_sip_register_endpoint_identifier(&username_identifier);
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| 	return AST_MODULE_LOAD_SUCCESS;
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| }
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| 
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| static int unload_module(void)
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| {
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| 	ast_sip_unregister_endpoint_identifier(&username_identifier);
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| 	return 0;
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| }
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| 
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| AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "PJSIP username endpoint identifier",
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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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