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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2007 - 2008, Digium, Inc.
*
* Russell Bryant <russell@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.
*/
/*!
* \file
* \author Russell Bryant <russell@digium.com>
* \brief Generic event system
*/
#ifndef AST_EVENT_DEFS_H
#define AST_EVENT_DEFS_H
/*! \brief Event types
* \note These values can *never* change. */
enum ast_event_type {
/*! Reserved to provide the ability to subscribe to all events. A specific
* event should never have a payload of 0. */
AST_EVENT_ALL = 0x00,
/*! This event type is reserved for use by third-party modules to create
* custom events without having to modify this file.
* \note There are no "custom" IE types, because IEs only have to be
* unique to the event itself, not necessarily across all events. */
AST_EVENT_CUSTOM = 0x01,
/*! Voicemail message waiting indication */
AST_EVENT_MWI = 0x02,
/*! Someone has subscribed to events */
AST_EVENT_SUB = 0x03,
/*! Someone has unsubscribed from events */
AST_EVENT_UNSUB = 0x04,
/*! The aggregate state of a device across all servers configured to be
* a part of a device state cluster has changed. */
AST_EVENT_DEVICE_STATE = 0x05,
/*! The state of a device has changed on _one_ server. This should not be used
* directly, in general. Use AST_EVENT_DEVICE_STATE instead. */
AST_EVENT_DEVICE_STATE_CHANGE = 0x06,
/*! Number of event types. This should be the last event type + 1 */
AST_EVENT_TOTAL = 0x07,
};
/*! \brief Event Information Element types */
enum ast_event_ie_type {
/*! Used to terminate the arguments to event functions */
AST_EVENT_IE_END = -1,
/*!
* \brief Number of new messages
* Used by: AST_EVENT_MWI
* Payload type: UINT
*/
AST_EVENT_IE_NEWMSGS = 0x01,
/*!
* \brief Number of
* Used by: AST_EVENT_MWI
* Payload type: UINT
*/
AST_EVENT_IE_OLDMSGS = 0x02,
/*!
* \brief Mailbox name \verbatim (mailbox[@context]) \endverbatim
* Used by: AST_EVENT_MWI
* Payload type: STR
*/
AST_EVENT_IE_MAILBOX = 0x03,
/*!
* \brief Unique ID
* Used by: AST_EVENT_SUB, AST_EVENT_UNSUB
* Payload type: UINT
*/
AST_EVENT_IE_UNIQUEID = 0x04,
/*!
* \brief Event type
* Used by: AST_EVENT_SUB, AST_EVENT_UNSUB
* Payload type: UINT
*/
AST_EVENT_IE_EVENTTYPE = 0x05,
/*!
* \brief Hint that someone cares that an IE exists
* Used by: AST_EVENT_SUB
* Payload type: UINT (ast_event_ie_type)
*/
AST_EVENT_IE_EXISTS = 0x06,
/*!
* \brief Device Name
* Used by AST_EVENT_DEVICE_STATE_CHANGE
* Payload type: STR
*/
AST_EVENT_IE_DEVICE = 0x07,
/*!
* \brief Generic State IE
* Used by AST_EVENT_DEVICE_STATE_CHANGE
* Payload type: UINT
* The actual state values depend on the event which
* this IE is a part of.
*/
AST_EVENT_IE_STATE = 0x08,
/*!
* \brief Context IE
* Used by AST_EVENT_MWI
* Payload type: str
*/
AST_EVENT_IE_CONTEXT = 0x09,
/*!
* \brief Entity ID
* Used by All events
* Payload type: RAW
* This IE indicates which server the event originated from
*/
AST_EVENT_IE_EID = 0x0A,
};
#define AST_EVENT_IE_MAX AST_EVENT_IE_EID
/*!
* \brief Payload types for event information elements
*/
enum ast_event_ie_pltype {
AST_EVENT_IE_PLTYPE_UNKNOWN = -1,
/*! Just check if it exists, not the value */
AST_EVENT_IE_PLTYPE_EXISTS,
/*! Unsigned Integer (Can be used for signed, too ...) */
AST_EVENT_IE_PLTYPE_UINT,
/*! String */
AST_EVENT_IE_PLTYPE_STR,
/*! Raw data, compared with memcmp */
AST_EVENT_IE_PLTYPE_RAW,
};
/*!
* \brief Results for checking for subscribers
*
* \ref ast_event_check_subscriber()
*/
enum ast_event_subscriber_res {
/*! No subscribers exist */
AST_EVENT_SUB_NONE,
/*! At least one subscriber exists */
AST_EVENT_SUB_EXISTS,
};
struct ast_event;
struct ast_event_ie;
struct ast_event_sub;
struct ast_event_iterator;
/*!
* \brief supposed to be an opaque type
*
* This is only here so that it can be declared on the stack.
*/
struct ast_event_iterator {
uint16_t event_len;
const struct ast_event *event;
struct ast_event_ie *ie;
};
#endif /* AST_EVENT_DEFS_H */
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