Release reference to publisher if we fail to add it to the vector. Change-Id: I64dff3f481b67b9884f37cadba7a5ccf23d084f3
1019 lines
31 KiB
C
1019 lines
31 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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* Kevin Harwell <kharwell@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_outbound_publish</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 <regex.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/res_pjsip.h"
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#include "asterisk/res_pjsip_outbound_publish.h"
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#include "asterisk/res_pjsip_pubsub.h"
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#include "asterisk/res_pjsip_body_generator_types.h"
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#include "asterisk/module.h"
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#include "asterisk/logger.h"
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#include "asterisk/astobj2.h"
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#include "asterisk/sorcery.h"
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#include "asterisk/app.h"
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#include "asterisk/taskprocessor.h"
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#define BODY_SIZE 1024
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#define EVENT_TYPE_SIZE 50
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/*!
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* \brief The number of buckets to use for storing publishers
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*/
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#define PUBLISHER_BUCKETS 31
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/*!
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* \brief Container of active outbound extension state publishers
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*/
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static struct ao2_container *publishers;
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/*! Serializer for outbound extension state publishing. */
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static struct ast_taskprocessor *publish_exten_state_serializer;
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/*!
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* \brief A subscription for extension state
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*
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* This structure acts as the owner for the underlying SIP subscription. It
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* also keeps a pointer to an associated "provider" so when a state changes
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* a notify data creator is quickly accessible.
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*/
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struct exten_state_subscription {
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/*! Watcher id when registering for extension state changes */
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int id;
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/*! The SIP subscription */
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struct ast_sip_subscription *sip_sub;
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/*! The serializer to use for notifications */
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struct ast_taskprocessor *serializer;
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/*! Context in which subscription looks for updates */
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char context[AST_MAX_CONTEXT];
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/*! Extension within the context to receive updates from */
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char exten[AST_MAX_EXTENSION];
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/*! The subscription's user agent */
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char *user_agent;
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/*! The last known extension state */
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enum ast_extension_states last_exten_state;
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/*! The last known presence state */
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enum ast_presence_state last_presence_state;
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};
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/*!
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* \brief An extension state publisher
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*
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*/
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struct exten_state_publisher {
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/*! Regular expression for context filtering */
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regex_t context_regex;
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/*! Regular expression for extension filtering */
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regex_t exten_regex;
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/*! Publish client to use for sending publish messages */
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struct ast_sip_outbound_publish_client *client;
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/*! Datastores container to hold persistent information */
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struct ao2_container *datastores;
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/*! Whether context filtering is active */
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unsigned int context_filter;
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/*! Whether extension filtering is active */
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unsigned int exten_filter;
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/*! The body type to use for this publisher - stored after the name */
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char *body_type;
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/*! The body subtype to use for this publisher - stored after the body type */
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char *body_subtype;
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/*! The name of this publisher */
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char name[0];
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};
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#define DEFAULT_PRESENCE_BODY "application/pidf+xml"
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#define DEFAULT_DIALOG_BODY "application/dialog-info+xml"
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static void subscription_shutdown(struct ast_sip_subscription *sub);
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static int new_subscribe(struct ast_sip_endpoint *endpoint, const char *resource);
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static int subscription_established(struct ast_sip_subscription *sub);
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static void *get_notify_data(struct ast_sip_subscription *sub);
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static void to_ami(struct ast_sip_subscription *sub,
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struct ast_str **buf);
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static int publisher_start(struct ast_sip_outbound_publish *configuration,
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struct ast_sip_outbound_publish_client *client);
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static int publisher_stop(struct ast_sip_outbound_publish_client *client);
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struct ast_sip_notifier presence_notifier = {
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.default_accept = DEFAULT_PRESENCE_BODY,
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.new_subscribe = new_subscribe,
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.subscription_established = subscription_established,
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.get_notify_data = get_notify_data,
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};
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struct ast_sip_notifier dialog_notifier = {
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.default_accept = DEFAULT_DIALOG_BODY,
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.new_subscribe = new_subscribe,
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.subscription_established = subscription_established,
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.get_notify_data = get_notify_data,
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};
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struct ast_sip_subscription_handler presence_handler = {
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.event_name = "presence",
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.body_type = AST_SIP_EXTEN_STATE_DATA,
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.accept = { DEFAULT_PRESENCE_BODY, },
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.subscription_shutdown = subscription_shutdown,
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.to_ami = to_ami,
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.notifier = &presence_notifier,
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};
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struct ast_sip_event_publisher_handler presence_publisher = {
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.event_name = "presence",
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.start_publishing = publisher_start,
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.stop_publishing = publisher_stop,
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};
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struct ast_sip_subscription_handler dialog_handler = {
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.event_name = "dialog",
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.body_type = AST_SIP_EXTEN_STATE_DATA,
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.accept = { DEFAULT_DIALOG_BODY, },
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.subscription_shutdown = subscription_shutdown,
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.to_ami = to_ami,
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.notifier = &dialog_notifier,
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};
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struct ast_sip_event_publisher_handler dialog_publisher = {
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.event_name = "dialog",
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.start_publishing = publisher_start,
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.stop_publishing = publisher_stop,
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};
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static void exten_state_subscription_destructor(void *obj)
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{
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struct exten_state_subscription *sub = obj;
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ast_free(sub->user_agent);
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ast_sip_subscription_destroy(sub->sip_sub);
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ast_taskprocessor_unreference(sub->serializer);
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}
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static char *get_user_agent(const struct ast_sip_subscription *sip_sub)
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{
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size_t size;
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char *user_agent = NULL;
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pjsip_user_agent_hdr *user_agent_hdr = ast_sip_subscription_get_header(
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sip_sub, "User-Agent");
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if (!user_agent_hdr) {
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return NULL;
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}
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size = pj_strlen(&user_agent_hdr->hvalue) + 1;
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user_agent = ast_malloc(size);
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ast_copy_pj_str(user_agent, &user_agent_hdr->hvalue, size);
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return ast_str_to_lower(user_agent);
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}
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/*!
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* \internal
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* \brief Initialize the last extension state to something outside
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* its usual states.
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*/
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#define INITIAL_LAST_EXTEN_STATE -3
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/*!
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* \internal
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* \brief Allocates an exten_state_subscription object.
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*
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* Creates the underlying SIP subscription for the given request. First makes
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* sure that there are registered handler and provider objects available.
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*/
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static struct exten_state_subscription *exten_state_subscription_alloc(
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struct ast_sip_subscription *sip_sub, struct ast_sip_endpoint *endpoint)
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{
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struct exten_state_subscription * exten_state_sub;
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exten_state_sub = ao2_alloc(sizeof(*exten_state_sub), exten_state_subscription_destructor);
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if (!exten_state_sub) {
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return NULL;
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}
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exten_state_sub->sip_sub = sip_sub;
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/* We keep our own reference to the serializer as there is no guarantee in state_changed
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* that the subscription tree is still valid when it is called. This can occur when
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* the subscription is terminated at around the same time as the state_changed
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* callback is invoked.
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*/
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exten_state_sub->serializer = ao2_bump(ast_sip_subscription_get_serializer(sip_sub));
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exten_state_sub->last_exten_state = INITIAL_LAST_EXTEN_STATE;
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exten_state_sub->last_presence_state = AST_PRESENCE_NOT_SET;
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exten_state_sub->user_agent = get_user_agent(sip_sub);
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return exten_state_sub;
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}
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struct notify_task_data {
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struct ast_sip_exten_state_data exten_state_data;
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struct exten_state_subscription *exten_state_sub;
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int terminate;
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};
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static void notify_task_data_destructor(void *obj)
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{
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struct notify_task_data *task_data = obj;
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ao2_ref(task_data->exten_state_sub, -1);
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ao2_cleanup(task_data->exten_state_data.device_state_info);
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ast_free(task_data->exten_state_data.presence_subtype);
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ast_free(task_data->exten_state_data.presence_message);
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ast_free(task_data->exten_state_data.user_agent);
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}
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static struct notify_task_data *alloc_notify_task_data(const char *exten,
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struct exten_state_subscription *exten_state_sub,
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struct ast_state_cb_info *info)
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{
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struct notify_task_data *task_data =
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ao2_alloc(sizeof(*task_data), notify_task_data_destructor);
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if (!task_data) {
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ast_log(LOG_WARNING, "Unable to create notify task data\n");
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return NULL;
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}
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task_data->exten_state_sub = exten_state_sub;
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task_data->exten_state_sub->last_exten_state = info->exten_state;
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task_data->exten_state_sub->last_presence_state = info->presence_state;
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ao2_ref(task_data->exten_state_sub, +1);
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task_data->exten_state_data.exten = exten_state_sub->exten;
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task_data->exten_state_data.exten_state = info->exten_state;
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task_data->exten_state_data.presence_state = info->presence_state;
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task_data->exten_state_data.presence_subtype = ast_strdup(info->presence_subtype);
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task_data->exten_state_data.presence_message = ast_strdup(info->presence_message);
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task_data->exten_state_data.user_agent = ast_strdup(exten_state_sub->user_agent);
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task_data->exten_state_data.device_state_info = ao2_bump(info->device_state_info);
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task_data->exten_state_data.sub = exten_state_sub->sip_sub;
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task_data->exten_state_data.datastores = ast_sip_subscription_get_datastores(exten_state_sub->sip_sub);
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if ((info->exten_state == AST_EXTENSION_DEACTIVATED) ||
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(info->exten_state == AST_EXTENSION_REMOVED)) {
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ast_verb(2, "Watcher for hint %s %s\n", exten, info->exten_state
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== AST_EXTENSION_REMOVED ? "removed" : "deactivated");
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task_data->terminate = 1;
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}
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return task_data;
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}
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static int notify_task(void *obj)
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{
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RAII_VAR(struct notify_task_data *, task_data, obj, ao2_cleanup);
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struct ast_sip_body_data data = {
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.body_type = AST_SIP_EXTEN_STATE_DATA,
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.body_data = &task_data->exten_state_data,
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};
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/* Terminated subscriptions are no longer associated with a valid tree, and sending
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* NOTIFY messages on a subscription which has already been terminated won't work.
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*/
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if (ast_sip_subscription_is_terminated(task_data->exten_state_sub->sip_sub)) {
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return 0;
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}
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/* All access to the subscription must occur within a task executed within its serializer */
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ast_sip_subscription_get_local_uri(task_data->exten_state_sub->sip_sub,
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task_data->exten_state_data.local, sizeof(task_data->exten_state_data.local));
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ast_sip_subscription_get_remote_uri(task_data->exten_state_sub->sip_sub,
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task_data->exten_state_data.remote, sizeof(task_data->exten_state_data.remote));
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/* Pool allocation has to happen here so that we allocate within a PJLIB thread */
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task_data->exten_state_data.pool = pjsip_endpt_create_pool(ast_sip_get_pjsip_endpoint(),
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"exten_state", 1024, 1024);
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if (!task_data->exten_state_data.pool) {
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return -1;
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}
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task_data->exten_state_data.sub = task_data->exten_state_sub->sip_sub;
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task_data->exten_state_data.datastores = ast_sip_subscription_get_datastores(task_data->exten_state_sub->sip_sub);
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ast_sip_subscription_notify(task_data->exten_state_sub->sip_sub, &data,
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task_data->terminate);
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pjsip_endpt_release_pool(ast_sip_get_pjsip_endpoint(),
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task_data->exten_state_data.pool);
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return 0;
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}
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/*!
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* \internal
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* \brief Callback for exten/device state changes.
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*
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* Upon state change, send the appropriate notification to the subscriber.
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*/
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static int state_changed(const char *context, const char *exten,
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struct ast_state_cb_info *info, void *data)
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{
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struct notify_task_data *task_data;
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struct exten_state_subscription *exten_state_sub = data;
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if (!(task_data = alloc_notify_task_data(exten, exten_state_sub, info))) {
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return -1;
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}
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/* safe to push this async since we copy the data from info and
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add a ref for the device state info */
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if (ast_sip_push_task(task_data->exten_state_sub->serializer, notify_task,
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task_data)) {
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ao2_cleanup(task_data);
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return -1;
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}
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return 0;
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}
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static void state_changed_destroy(int id, void *data)
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{
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struct exten_state_subscription *exten_state_sub = data;
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ao2_cleanup(exten_state_sub);
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}
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static struct ast_datastore_info ds_info = { };
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static const char ds_name[] = "exten state datastore";
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/*!
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* \internal
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* \brief Add a datastore for exten exten_state_subscription.
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*
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* Adds the exten_state_subscription wrapper object to a datastore so it can be retrieved
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* later based upon its association with the ast_sip_subscription.
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*/
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static int add_datastore(struct exten_state_subscription *exten_state_sub)
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{
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RAII_VAR(struct ast_datastore *, datastore,
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ast_sip_subscription_alloc_datastore(&ds_info, ds_name), ao2_cleanup);
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if (!datastore) {
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return -1;
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}
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datastore->data = exten_state_sub;
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ast_sip_subscription_add_datastore(exten_state_sub->sip_sub, datastore);
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ao2_ref(exten_state_sub, +1);
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return 0;
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}
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/*!
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* \internal
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* \brief Get the exten_state_subscription object associated with the given
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* ast_sip_subscription in the datastore.
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*/
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static struct exten_state_subscription *get_exten_state_sub(
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struct ast_sip_subscription *sub)
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{
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RAII_VAR(struct ast_datastore *, datastore,
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ast_sip_subscription_get_datastore(sub, ds_name), ao2_cleanup);
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return datastore ? datastore->data : NULL;
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}
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static void subscription_shutdown(struct ast_sip_subscription *sub)
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{
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struct exten_state_subscription *exten_state_sub = get_exten_state_sub(sub);
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if (!exten_state_sub) {
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return;
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}
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ast_extension_state_del(exten_state_sub->id, state_changed);
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ast_sip_subscription_remove_datastore(exten_state_sub->sip_sub, ds_name);
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/* remove data store reference */
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ao2_cleanup(exten_state_sub);
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}
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static int new_subscribe(struct ast_sip_endpoint *endpoint,
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const char *resource)
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{
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const char *context = S_OR(endpoint->subscription.context, endpoint->context);
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if (!ast_exists_extension(NULL, context, resource, PRIORITY_HINT, NULL)) {
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ast_log(LOG_NOTICE, "Endpoint '%s' state subscription failed: "
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"Extension '%s' does not exist in context '%s' or has no associated hint\n",
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ast_sorcery_object_get_id(endpoint), resource, context);
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return 404;
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}
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return 200;
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}
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static int subscription_established(struct ast_sip_subscription *sip_sub)
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{
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struct ast_sip_endpoint *endpoint = ast_sip_subscription_get_endpoint(sip_sub);
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const char *resource = ast_sip_subscription_get_resource_name(sip_sub);
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struct exten_state_subscription *exten_state_sub;
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if (!(exten_state_sub = exten_state_subscription_alloc(sip_sub, endpoint))) {
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ao2_cleanup(endpoint);
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return -1;
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}
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ast_copy_string(exten_state_sub->context,
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S_OR(endpoint->subscription.context, endpoint->context),
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sizeof(exten_state_sub->context));
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ast_copy_string(exten_state_sub->exten, resource, sizeof(exten_state_sub->exten));
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if ((exten_state_sub->id = ast_extension_state_add_destroy_extended(
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exten_state_sub->context, exten_state_sub->exten,
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state_changed, state_changed_destroy, exten_state_sub)) < 0) {
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ast_log(LOG_WARNING, "Unable to subscribe endpoint '%s' to extension '%s@%s'\n",
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ast_sorcery_object_get_id(endpoint), exten_state_sub->exten,
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exten_state_sub->context);
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ao2_cleanup(endpoint);
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ao2_cleanup(exten_state_sub);
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return -1;
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}
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|
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/* Go ahead and cleanup the endpoint since we don't need it anymore */
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ao2_cleanup(endpoint);
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|
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/* bump the ref since ast_extension_state_add holds a reference */
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ao2_ref(exten_state_sub, +1);
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if (add_datastore(exten_state_sub)) {
|
|
ast_log(LOG_WARNING, "Unable to add to subscription datastore.\n");
|
|
ao2_cleanup(exten_state_sub);
|
|
return -1;
|
|
}
|
|
|
|
ao2_cleanup(exten_state_sub);
|
|
return 0;
|
|
}
|
|
|
|
static void exten_state_data_destructor(void *obj)
|
|
{
|
|
struct ast_sip_exten_state_data *exten_state_data = obj;
|
|
|
|
ao2_cleanup(exten_state_data->device_state_info);
|
|
ast_free(exten_state_data->presence_subtype);
|
|
ast_free(exten_state_data->presence_message);
|
|
if (exten_state_data->pool) {
|
|
pjsip_endpt_release_pool(ast_sip_get_pjsip_endpoint(), exten_state_data->pool);
|
|
}
|
|
}
|
|
|
|
static struct ast_sip_exten_state_data *exten_state_data_alloc(struct ast_sip_subscription *sip_sub,
|
|
struct exten_state_subscription *exten_state_sub)
|
|
{
|
|
struct ast_sip_exten_state_data *exten_state_data;
|
|
char *subtype = NULL;
|
|
char *message = NULL;
|
|
int presence_state;
|
|
|
|
exten_state_data = ao2_alloc(sizeof(*exten_state_data), exten_state_data_destructor);
|
|
if (!exten_state_data) {
|
|
return NULL;
|
|
}
|
|
|
|
exten_state_data->exten = exten_state_sub->exten;
|
|
presence_state = ast_hint_presence_state(NULL, exten_state_sub->context, exten_state_sub->exten, &subtype, &message);
|
|
if (presence_state == -1 || presence_state == AST_PRESENCE_INVALID) {
|
|
ao2_cleanup(exten_state_data);
|
|
return NULL;
|
|
}
|
|
exten_state_data->presence_state = presence_state;
|
|
exten_state_data->presence_subtype = subtype;
|
|
exten_state_data->presence_message = message;
|
|
exten_state_data->user_agent = exten_state_sub->user_agent;
|
|
ast_sip_subscription_get_local_uri(sip_sub, exten_state_data->local,
|
|
sizeof(exten_state_data->local));
|
|
ast_sip_subscription_get_remote_uri(sip_sub, exten_state_data->remote,
|
|
sizeof(exten_state_data->remote));
|
|
exten_state_data->sub = sip_sub;
|
|
exten_state_data->datastores = ast_sip_subscription_get_datastores(sip_sub);
|
|
|
|
exten_state_data->exten_state = ast_extension_state_extended(
|
|
NULL, exten_state_sub->context, exten_state_sub->exten,
|
|
&exten_state_data->device_state_info);
|
|
if (exten_state_data->exten_state < 0) {
|
|
ao2_cleanup(exten_state_data);
|
|
return NULL;
|
|
}
|
|
|
|
exten_state_data->pool = pjsip_endpt_create_pool(ast_sip_get_pjsip_endpoint(),
|
|
"exten_state", 1024, 1024);
|
|
if (!exten_state_data->pool) {
|
|
ao2_cleanup(exten_state_data);
|
|
return NULL;
|
|
}
|
|
|
|
return exten_state_data;
|
|
}
|
|
|
|
static void *get_notify_data(struct ast_sip_subscription *sub)
|
|
{
|
|
struct exten_state_subscription *exten_state_sub;
|
|
|
|
exten_state_sub = get_exten_state_sub(sub);
|
|
if (!exten_state_sub) {
|
|
return NULL;
|
|
}
|
|
|
|
return exten_state_data_alloc(sub, exten_state_sub);
|
|
}
|
|
|
|
static void to_ami(struct ast_sip_subscription *sub,
|
|
struct ast_str **buf)
|
|
{
|
|
struct exten_state_subscription *exten_state_sub =
|
|
get_exten_state_sub(sub);
|
|
|
|
if (!exten_state_sub) {
|
|
return;
|
|
}
|
|
|
|
ast_str_append(buf, 0, "SubscriptionType: extension_state\r\n"
|
|
"Extension: %s\r\nExtensionStates: %s\r\n",
|
|
exten_state_sub->exten, ast_extension_state2str(
|
|
exten_state_sub->last_exten_state));
|
|
}
|
|
|
|
struct exten_state_pub_data {
|
|
/*! Publishers needing state update */
|
|
AST_VECTOR(name, struct exten_state_publisher *) pubs;
|
|
/*! Body generator state data */
|
|
struct ast_sip_exten_state_data exten_state_data;
|
|
};
|
|
|
|
static void exten_state_pub_data_destroy(struct exten_state_pub_data *doomed)
|
|
{
|
|
if (!doomed) {
|
|
return;
|
|
}
|
|
|
|
ast_free((void *) doomed->exten_state_data.exten);
|
|
ast_free(doomed->exten_state_data.presence_subtype);
|
|
ast_free(doomed->exten_state_data.presence_message);
|
|
ao2_cleanup(doomed->exten_state_data.device_state_info);
|
|
|
|
AST_VECTOR_CALLBACK_VOID(&doomed->pubs, ao2_ref, -1);
|
|
AST_VECTOR_FREE(&doomed->pubs);
|
|
|
|
ast_free(doomed);
|
|
}
|
|
|
|
static struct exten_state_pub_data *exten_state_pub_data_alloc(const char *exten, struct ast_state_cb_info *info)
|
|
{
|
|
struct exten_state_pub_data *pub_data;
|
|
|
|
pub_data = ast_calloc(1, sizeof(*pub_data));
|
|
if (!pub_data) {
|
|
return NULL;
|
|
}
|
|
|
|
if (AST_VECTOR_INIT(&pub_data->pubs, ao2_container_count(publishers))) {
|
|
exten_state_pub_data_destroy(pub_data);
|
|
return NULL;
|
|
}
|
|
|
|
/* Save off currently known information for the body generators. */
|
|
pub_data->exten_state_data.exten = ast_strdup(exten);
|
|
pub_data->exten_state_data.exten_state = info->exten_state;
|
|
pub_data->exten_state_data.presence_state = info->presence_state;
|
|
pub_data->exten_state_data.presence_subtype = ast_strdup(info->presence_subtype);
|
|
pub_data->exten_state_data.presence_message = ast_strdup(info->presence_message);
|
|
pub_data->exten_state_data.device_state_info = ao2_bump(info->device_state_info);
|
|
if (!pub_data->exten_state_data.exten
|
|
|| !pub_data->exten_state_data.presence_subtype
|
|
|| !pub_data->exten_state_data.presence_message) {
|
|
exten_state_pub_data_destroy(pub_data);
|
|
return NULL;
|
|
}
|
|
return pub_data;
|
|
}
|
|
|
|
/*!
|
|
* \internal
|
|
* \brief Create exten state PUBLISH messages under PJSIP thread.
|
|
* \since 14.0.0
|
|
*
|
|
* \return 0
|
|
*/
|
|
static int exten_state_publisher_cb(void *data)
|
|
{
|
|
struct exten_state_pub_data *pub_data = data;
|
|
struct exten_state_publisher *publisher;
|
|
size_t idx;
|
|
struct ast_str *body_text;
|
|
pj_pool_t *pool;
|
|
struct ast_sip_body_data gen_data = {
|
|
.body_type = AST_SIP_EXTEN_STATE_DATA,
|
|
.body_data = &pub_data->exten_state_data,
|
|
};
|
|
struct ast_sip_body body;
|
|
|
|
body_text = ast_str_create(64);
|
|
if (!body_text) {
|
|
exten_state_pub_data_destroy(pub_data);
|
|
return 0;
|
|
}
|
|
|
|
/* Need a PJSIP memory pool to generate the bodies. */
|
|
pool = pjsip_endpt_create_pool(ast_sip_get_pjsip_endpoint(), "pub_state_body",
|
|
1024, 1024);
|
|
if (!pool) {
|
|
ast_log(LOG_WARNING, "Exten state publishing unable to create memory pool\n");
|
|
exten_state_pub_data_destroy(pub_data);
|
|
ast_free(body_text);
|
|
return 0;
|
|
}
|
|
pub_data->exten_state_data.pool = pool;
|
|
|
|
for (idx = 0; idx < AST_VECTOR_SIZE(&pub_data->pubs); ++idx) {
|
|
const char *uri;
|
|
int res;
|
|
|
|
publisher = AST_VECTOR_GET(&pub_data->pubs, idx);
|
|
|
|
uri = ast_sip_publish_client_get_user_from_uri(publisher->client, pub_data->exten_state_data.exten,
|
|
pub_data->exten_state_data.local, sizeof(pub_data->exten_state_data.local));
|
|
if (ast_strlen_zero(uri)) {
|
|
ast_log(LOG_WARNING, "PUBLISH client '%s' has no from_uri or server_uri defined.\n",
|
|
publisher->name);
|
|
continue;
|
|
}
|
|
|
|
uri = ast_sip_publish_client_get_user_to_uri(publisher->client, pub_data->exten_state_data.exten,
|
|
pub_data->exten_state_data.remote, sizeof(pub_data->exten_state_data.remote));
|
|
if (ast_strlen_zero(uri)) {
|
|
ast_log(LOG_WARNING, "PUBLISH client '%s' has no to_uri or server_uri defined.\n",
|
|
publisher->name);
|
|
continue;
|
|
}
|
|
|
|
pub_data->exten_state_data.datastores = publisher->datastores;
|
|
|
|
res = ast_sip_pubsub_generate_body_content(publisher->body_type,
|
|
publisher->body_subtype, &gen_data, &body_text);
|
|
pj_pool_reset(pool);
|
|
if (res) {
|
|
ast_log(LOG_WARNING,
|
|
"PUBLISH client '%s' unable to generate %s/%s PUBLISH body.\n",
|
|
publisher->name, publisher->body_type, publisher->body_subtype);
|
|
continue;
|
|
}
|
|
|
|
body.type = publisher->body_type;
|
|
body.subtype = publisher->body_subtype;
|
|
body.body_text = ast_str_buffer(body_text);
|
|
ast_sip_publish_client_user_send(publisher->client, pub_data->exten_state_data.exten, &body);
|
|
}
|
|
|
|
pjsip_endpt_release_pool(ast_sip_get_pjsip_endpoint(), pool);
|
|
|
|
ast_free(body_text);
|
|
exten_state_pub_data_destroy(pub_data);
|
|
return 0;
|
|
}
|
|
|
|
/*!
|
|
* \brief Global extension state callback function
|
|
*/
|
|
static int exten_state_publisher_state_cb(const char *context, const char *exten, struct ast_state_cb_info *info, void *data)
|
|
{
|
|
struct ao2_iterator publisher_iter;
|
|
struct exten_state_publisher *publisher;
|
|
struct exten_state_pub_data *pub_data = NULL;
|
|
|
|
ast_debug(5, "Exten state publisher: %s@%s Reason:%s State:%s Presence:%s Subtype:'%s' Message:'%s'\n",
|
|
exten, context,
|
|
info->reason == AST_HINT_UPDATE_DEVICE
|
|
? "Device"
|
|
: info->reason == AST_HINT_UPDATE_PRESENCE
|
|
? "Presence"
|
|
: "Unknown",
|
|
ast_extension_state2str(info->exten_state),
|
|
ast_presence_state2str(info->presence_state),
|
|
S_OR(info->presence_subtype, ""),
|
|
S_OR(info->presence_message, ""));
|
|
publisher_iter = ao2_iterator_init(publishers, 0);
|
|
for (; (publisher = ao2_iterator_next(&publisher_iter)); ao2_ref(publisher, -1)) {
|
|
if ((publisher->context_filter && regexec(&publisher->context_regex, context, 0, NULL, 0)) ||
|
|
(publisher->exten_filter && regexec(&publisher->exten_regex, exten, 0, NULL, 0))) {
|
|
continue;
|
|
}
|
|
|
|
if (!pub_data) {
|
|
pub_data = exten_state_pub_data_alloc(exten, info);
|
|
if (!pub_data) {
|
|
ao2_ref(publisher, -1);
|
|
break;
|
|
}
|
|
}
|
|
|
|
ao2_ref(publisher, +1);
|
|
if (AST_VECTOR_APPEND(&pub_data->pubs, publisher)) {
|
|
ao2_ref(publisher, -1);
|
|
} else {
|
|
ast_debug(5, "'%s' will publish exten state\n", publisher->name);
|
|
}
|
|
}
|
|
ao2_iterator_destroy(&publisher_iter);
|
|
|
|
if (pub_data
|
|
&& ast_sip_push_task(publish_exten_state_serializer, exten_state_publisher_cb,
|
|
pub_data)) {
|
|
exten_state_pub_data_destroy(pub_data);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*!
|
|
* \brief Hashing function for extension state publisher
|
|
*/
|
|
static int exten_state_publisher_hash(const void *obj, const int flags)
|
|
{
|
|
const struct exten_state_publisher *object;
|
|
const char *key;
|
|
|
|
switch (flags & OBJ_SEARCH_MASK) {
|
|
case OBJ_SEARCH_KEY:
|
|
key = obj;
|
|
break;
|
|
case OBJ_SEARCH_OBJECT:
|
|
object = obj;
|
|
key = object->name;
|
|
break;
|
|
default:
|
|
ast_assert(0);
|
|
return 0;
|
|
}
|
|
return ast_str_hash(key);
|
|
}
|
|
|
|
/*!
|
|
* \brief Comparator function for extension state publisher
|
|
*/
|
|
static int exten_state_publisher_cmp(void *obj, void *arg, int flags)
|
|
{
|
|
const struct exten_state_publisher *object_left = obj;
|
|
const struct exten_state_publisher *object_right = arg;
|
|
const char *right_key = arg;
|
|
int cmp;
|
|
|
|
switch (flags & OBJ_SEARCH_MASK) {
|
|
case OBJ_SEARCH_OBJECT:
|
|
right_key = object_right->name;
|
|
/* Fall through */
|
|
case OBJ_SEARCH_KEY:
|
|
cmp = strcmp(object_left->name, right_key);
|
|
break;
|
|
case OBJ_SEARCH_PARTIAL_KEY:
|
|
/* Not supported by container. */
|
|
ast_assert(0);
|
|
return 0;
|
|
default:
|
|
cmp = 0;
|
|
break;
|
|
}
|
|
if (cmp) {
|
|
return 0;
|
|
}
|
|
return CMP_MATCH;
|
|
}
|
|
|
|
/*!
|
|
* \brief Destructor for extension state publisher
|
|
*/
|
|
static void exten_state_publisher_destroy(void *obj)
|
|
{
|
|
struct exten_state_publisher *publisher = obj;
|
|
|
|
if (publisher->context_filter) {
|
|
regfree(&publisher->context_regex);
|
|
}
|
|
|
|
if (publisher->exten_filter) {
|
|
regfree(&publisher->exten_regex);
|
|
}
|
|
|
|
ao2_cleanup(publisher->client);
|
|
ao2_cleanup(publisher->datastores);
|
|
}
|
|
|
|
static int build_regex(regex_t *regex, const char *text)
|
|
{
|
|
int res;
|
|
|
|
if ((res = regcomp(regex, text, REG_EXTENDED | REG_ICASE | REG_NOSUB))) {
|
|
size_t len = regerror(res, regex, NULL, 0);
|
|
char buf[len];
|
|
regerror(res, regex, buf, len);
|
|
ast_log(LOG_ERROR, "Could not compile regex '%s': %s\n", text, buf);
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int publisher_start(struct ast_sip_outbound_publish *configuration, struct ast_sip_outbound_publish_client *client)
|
|
{
|
|
struct exten_state_publisher *publisher;
|
|
size_t name_size;
|
|
size_t body_type_size;
|
|
size_t body_subtype_size;
|
|
char *body_subtype;
|
|
const char *body_full;
|
|
const char *body_type;
|
|
const char *name;
|
|
const char *context;
|
|
const char *exten;
|
|
|
|
name = ast_sorcery_object_get_id(configuration);
|
|
|
|
body_full = ast_sorcery_object_get_extended(configuration, "body");
|
|
if (ast_strlen_zero(body_full)) {
|
|
ast_log(LOG_ERROR, "Outbound extension state publisher '%s': Body not set\n",
|
|
name);
|
|
return -1;
|
|
}
|
|
|
|
body_subtype = ast_strdupa(body_full);
|
|
body_type = strsep(&body_subtype, "/");
|
|
if (ast_strlen_zero(body_type) || ast_strlen_zero(body_subtype)) {
|
|
ast_log(LOG_ERROR, "Outbound extension state publisher '%s': Body '%s' missing type or subtype\n",
|
|
name, body_full);
|
|
return -1;
|
|
}
|
|
|
|
if (!ast_sip_pubsub_is_body_generator_registered(body_type, body_subtype)) {
|
|
ast_log(LOG_ERROR, "Outbound extension state publisher '%s': '%s' body generator not registered\n",
|
|
name, body_full);
|
|
return -1;
|
|
}
|
|
|
|
name_size = strlen(name) + 1;
|
|
body_type_size = strlen(body_type) + 1;
|
|
body_subtype_size = strlen(body_subtype) + 1;
|
|
|
|
publisher = ao2_alloc_options(
|
|
sizeof(*publisher) + name_size + body_type_size + body_subtype_size,
|
|
exten_state_publisher_destroy, AO2_ALLOC_OPT_LOCK_NOLOCK);
|
|
if (!publisher) {
|
|
return -1;
|
|
}
|
|
|
|
ast_copy_string(publisher->name, name, name_size);
|
|
publisher->body_type = publisher->name + name_size;
|
|
ast_copy_string(publisher->body_type, body_type, body_type_size);
|
|
publisher->body_subtype = publisher->body_type + body_type_size;
|
|
ast_copy_string(publisher->body_subtype, body_subtype, body_subtype_size);
|
|
|
|
context = ast_sorcery_object_get_extended(configuration, "context");
|
|
if (!ast_strlen_zero(context)) {
|
|
if (build_regex(&publisher->context_regex, context)) {
|
|
ast_log(LOG_ERROR, "Outbound extension state publisher '%s': Could not build context filter '%s'\n",
|
|
name, context);
|
|
ao2_ref(publisher, -1);
|
|
return -1;
|
|
}
|
|
|
|
publisher->context_filter = 1;
|
|
}
|
|
|
|
exten = ast_sorcery_object_get_extended(configuration, "exten");
|
|
if (!ast_strlen_zero(exten)) {
|
|
if (build_regex(&publisher->exten_regex, exten)) {
|
|
ast_log(LOG_ERROR, "Outbound extension state publisher '%s': Could not build exten filter '%s'\n",
|
|
name, exten);
|
|
ao2_ref(publisher, -1);
|
|
return -1;
|
|
}
|
|
|
|
publisher->exten_filter = 1;
|
|
}
|
|
|
|
publisher->datastores = ast_datastores_alloc();
|
|
if (!publisher->datastores) {
|
|
ast_log(LOG_ERROR, "Outbound extension state publisher '%s': Could not create datastores container\n",
|
|
name);
|
|
ao2_ref(publisher, -1);
|
|
return -1;
|
|
}
|
|
|
|
publisher->client = ao2_bump(client);
|
|
|
|
ao2_lock(publishers);
|
|
if (!ao2_container_count(publishers)) {
|
|
ast_extension_state_add(NULL, NULL, exten_state_publisher_state_cb, NULL);
|
|
}
|
|
ao2_link_flags(publishers, publisher, OBJ_NOLOCK);
|
|
ao2_unlock(publishers);
|
|
|
|
ao2_ref(publisher, -1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int publisher_stop(struct ast_sip_outbound_publish_client *client)
|
|
{
|
|
ao2_find(publishers, ast_sorcery_object_get_id(client), OBJ_SEARCH_KEY | OBJ_UNLINK | OBJ_NODATA);
|
|
return 0;
|
|
}
|
|
|
|
static int unload_module(void)
|
|
{
|
|
ast_sip_unregister_event_publisher_handler(&dialog_publisher);
|
|
ast_sip_unregister_subscription_handler(&dialog_handler);
|
|
ast_sip_unregister_event_publisher_handler(&presence_publisher);
|
|
ast_sip_unregister_subscription_handler(&presence_handler);
|
|
|
|
ast_extension_state_del(0, exten_state_publisher_state_cb);
|
|
|
|
ast_taskprocessor_unreference(publish_exten_state_serializer);
|
|
publish_exten_state_serializer = NULL;
|
|
|
|
ao2_cleanup(publishers);
|
|
publishers = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int load_module(void)
|
|
{
|
|
CHECK_PJSIP_PUBSUB_MODULE_LOADED();
|
|
|
|
if (!ast_module_check("res_pjsip_outbound_publish.so")) {
|
|
ast_log(LOG_WARNING, "This module requires the 'res_pjsip_outbound_publish.so' module to be loaded\n");
|
|
return AST_MODULE_LOAD_DECLINE;
|
|
}
|
|
|
|
publishers = ao2_container_alloc(PUBLISHER_BUCKETS, exten_state_publisher_hash,
|
|
exten_state_publisher_cmp);
|
|
if (!publishers) {
|
|
ast_log(LOG_WARNING, "Unable to create container to store extension state publishers\n");
|
|
return AST_MODULE_LOAD_DECLINE;
|
|
}
|
|
|
|
publish_exten_state_serializer = ast_sip_create_serializer("pjsip/exten_state");
|
|
if (!publish_exten_state_serializer) {
|
|
unload_module();
|
|
return AST_MODULE_LOAD_DECLINE;
|
|
}
|
|
|
|
if (ast_sip_register_subscription_handler(&presence_handler)) {
|
|
ast_log(LOG_WARNING, "Unable to register subscription handler %s\n",
|
|
presence_handler.event_name);
|
|
unload_module();
|
|
return AST_MODULE_LOAD_DECLINE;
|
|
}
|
|
|
|
if (ast_sip_register_event_publisher_handler(&presence_publisher)) {
|
|
ast_log(LOG_WARNING, "Unable to register presence publisher %s\n",
|
|
presence_publisher.event_name);
|
|
unload_module();
|
|
return AST_MODULE_LOAD_DECLINE;
|
|
}
|
|
|
|
if (ast_sip_register_subscription_handler(&dialog_handler)) {
|
|
ast_log(LOG_WARNING, "Unable to register subscription handler %s\n",
|
|
dialog_handler.event_name);
|
|
unload_module();
|
|
return AST_MODULE_LOAD_DECLINE;
|
|
}
|
|
|
|
if (ast_sip_register_event_publisher_handler(&dialog_publisher)) {
|
|
ast_log(LOG_WARNING, "Unable to register presence publisher %s\n",
|
|
dialog_publisher.event_name);
|
|
unload_module();
|
|
return AST_MODULE_LOAD_DECLINE;
|
|
}
|
|
|
|
return AST_MODULE_LOAD_SUCCESS;
|
|
}
|
|
|
|
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "PJSIP Extension State Notifications",
|
|
.support_level = AST_MODULE_SUPPORT_CORE,
|
|
.load = load_module,
|
|
.unload = unload_module,
|
|
.load_pri = AST_MODPRI_CHANNEL_DEPEND + 5,
|
|
);
|