This commit adds the ability for a user to configure a resource list in pjsip.conf. Subscribing to this list simultaneously subscribes the subscriber to all resources listed. This has the potential to reduce the amount of SIP traffic when loads of subscribers on a system attempt to subscribe to each others' states. git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@420384 65c4cc65-6c06-0410-ace0-fbb531ad65f3
178 lines
5 KiB
C
178 lines
5 KiB
C
/*
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* asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2014, 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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/*** MODULEINFO
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<depend>pjproject</depend>
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<depend>res_pjsip</depend>
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<depend>res_pjsip_pubsub</depend>
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<depend>res_pjsip_exten_state</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_simple.h>
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#include <pjlib.h>
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#include "asterisk/module.h"
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#include "asterisk/res_pjsip.h"
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#include "asterisk/res_pjsip_pubsub.h"
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#include "asterisk/res_pjsip_presence_xml.h"
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#include "asterisk/res_pjsip_body_generator_types.h"
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static void *xpidf_allocate_body(void *data)
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{
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struct ast_sip_exten_state_data *state_data = data;
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char *local = ast_strdupa(state_data->local);
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pjxpidf_pres *pres;
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pj_str_t name;
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pres = pjxpidf_create(state_data->pool, pj_cstr(&name, ast_strip_quoted(local, "<", ">")));
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return pres;
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}
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static int xpidf_generate_body_content(void *body, void *data)
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{
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pjxpidf_pres *pres = body;
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struct ast_sip_exten_state_data *state_data = data;
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static pj_str_t STR_ADDR_PARAM = { ";user=ip", 8 };
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char *statestring = NULL, *pidfstate = NULL, *pidfnote = NULL;
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pj_xml_attr *attr;
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enum ast_sip_pidf_state local_state;
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pj_str_t uri;
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char sanitized[PJSIP_MAX_URL_SIZE];
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pj_xml_node *atom;
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pj_xml_node *address;
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pj_xml_node *status;
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pj_xml_node *msnsubstatus;
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ast_sip_presence_exten_state_to_str(state_data->exten_state, &statestring,
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&pidfstate, &pidfnote, &local_state);
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ast_sip_presence_xml_find_node_attr(state_data->pool, pres, "atom", "id",
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&atom, &attr);
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pj_strdup2(state_data->pool, &attr->value, state_data->exten);
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ast_sip_presence_xml_find_node_attr(state_data->pool, atom, "address",
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"uri", &address, &attr);
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ast_sip_sanitize_xml(state_data->remote, sanitized, sizeof(sanitized));
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uri.ptr = (char*) pj_pool_alloc(state_data->pool,
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strlen(sanitized) + STR_ADDR_PARAM.slen);
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pj_strcpy2( &uri, sanitized);
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pj_strcat( &uri, &STR_ADDR_PARAM);
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pj_strdup(state_data->pool, &attr->value, &uri);
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ast_sip_presence_xml_create_attr(state_data->pool, address, "priority", "0.80000");
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ast_sip_presence_xml_find_node_attr(state_data->pool, address,
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"status", "status", &status, &attr);
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pj_strdup2(state_data->pool, &attr->value,
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(local_state == NOTIFY_OPEN) ? "open" :
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(local_state == NOTIFY_INUSE) ? "inuse" : "closed");
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ast_sip_presence_xml_find_node_attr(state_data->pool, address,
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"msnsubstatus", "substatus", &msnsubstatus, &attr);
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pj_strdup2(state_data->pool, &attr->value,
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(local_state == NOTIFY_OPEN) ? "online" :
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(local_state == NOTIFY_INUSE) ? "onthephone" : "offline");
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return 0;
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}
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#define MAX_STRING_GROWTHS 5
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static void xpidf_to_string(void *body, struct ast_str **str)
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{
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pjxpidf_pres *pres = body;
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int growths = 0;
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int size;
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do {
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size = pjxpidf_print(pres, ast_str_buffer(*str), ast_str_size(*str));
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if (size == AST_PJSIP_XML_PROLOG_LEN) {
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ast_str_make_space(str, ast_str_size(*str) * 2);
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++growths;
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}
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} while (size == AST_PJSIP_XML_PROLOG_LEN && growths < MAX_STRING_GROWTHS);
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if (size == AST_PJSIP_XML_PROLOG_LEN) {
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ast_log(LOG_WARNING, "XPIDF body text too large\n");
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return;
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}
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*(ast_str_buffer(*str) + size) = '\0';
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ast_str_update(*str);
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}
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static struct ast_sip_pubsub_body_generator xpidf_body_generator = {
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.type = "application",
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.subtype = "xpidf+xml",
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.allocate_body = xpidf_allocate_body,
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.generate_body_content = xpidf_generate_body_content,
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.to_string = xpidf_to_string,
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/* No need for a destroy_body callback since we use a pool */
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};
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static struct ast_sip_pubsub_body_generator cpim_pidf_body_generator = {
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.type = "application",
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.subtype = "cpim-pidf+xml",
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.allocate_body = xpidf_allocate_body,
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.generate_body_content = xpidf_generate_body_content,
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.to_string = xpidf_to_string,
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/* No need for a destroy_body callback since we use a pool */
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};
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static void unregister_all(void)
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{
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ast_sip_pubsub_unregister_body_generator(&cpim_pidf_body_generator);
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ast_sip_pubsub_unregister_body_generator(&xpidf_body_generator);
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}
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static int load_module(void)
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{
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if (ast_sip_pubsub_register_body_generator(&xpidf_body_generator)) {
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goto fail;
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}
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if (ast_sip_pubsub_register_body_generator(&cpim_pidf_body_generator)) {
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goto fail;
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}
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return AST_MODULE_LOAD_SUCCESS;
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fail:
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unregister_all();
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return AST_MODULE_LOAD_DECLINE;
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}
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static int unload_module(void)
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{
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unregister_all();
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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 Extension State PIDF Provider",
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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_CHANNEL_DEPEND,
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);
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