event_defs.h

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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
 
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,
    /*! Channel Event Logging events */
    AST_EVENT_CEL                 = 0x07,
    /*! A report of a security related event (see security_events.h) */
    AST_EVENT_SECURITY            = 0x08,
    /*! Used by res_stun_monitor to alert listeners to an exernal network address change. */
    AST_EVENT_NETWORK_CHANGE      = 0x09,
    /*! The presence state for a presence provider */
    AST_EVENT_PRESENCE_STATE      = 0x0a,
    /*! Used to alert listeners when a named ACL has changed. */
    AST_EVENT_ACL_CHANGE          = 0x0b,
    /*! Send out a ping for debugging distributed events */
    AST_EVENT_PING                = 0x0c,
    /*! A cluster discovery message */
    AST_EVENT_CLUSTER_DISCOVERY   = 0x0d,
    /*! Number of event types.  This should be the last event type + 1 */
    AST_EVENT_TOTAL               = 0x0e,
};
 
/*! \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             = 0x0001,
    /*!
     * \brief Number of
     * Used by: AST_EVENT_MWI
     * Payload type: UINT
     */
    AST_EVENT_IE_OLDMSGS             = 0x0002,
    /*!
     * \brief Mailbox name \verbatim (mailbox[@context]) \endverbatim
     * Used by: AST_EVENT_MWI
     * Payload type: STR
     */
    AST_EVENT_IE_MAILBOX             = 0x0003,
    /*!
     * \brief Unique ID
     * Used by: AST_EVENT_SUB, AST_EVENT_UNSUB
     * Payload type: UINT
     */
    AST_EVENT_IE_UNIQUEID            = 0x0004,
    /*!
     * \brief Event type
     * Used by: AST_EVENT_SUB, AST_EVENT_UNSUB
     * Payload type: UINT
     */
    AST_EVENT_IE_EVENTTYPE           = 0x0005,
    /*!
     * \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              = 0x0006,
    /*!
     * \brief Device Name
     * Used by AST_EVENT_DEVICE_STATE_CHANGE
     * Payload type: STR
     */
    AST_EVENT_IE_DEVICE              = 0x0007,
    /*!
     * \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              = 0x0008,
    /*!
     * \brief Context IE
     * Used by AST_EVENT_MWI
     * Payload type: str
     */
     AST_EVENT_IE_CONTEXT            = 0x0009,
    /*!
     * \brief Channel Event Type
     * Used by: AST_EVENT_CEL
     * Payload type: UINT
     */
    AST_EVENT_IE_CEL_EVENT_TYPE      = 0x000a,
    /*!
     * \brief Channel Event Time (seconds)
     * Used by: AST_EVENT_CEL
     * Payload type: UINT
     */
    AST_EVENT_IE_CEL_EVENT_TIME      = 0x000b,
    /*!
     * \brief Channel Event Time (micro-seconds)
     * Used by: AST_EVENT_CEL
     * Payload type: UINT
     */
    AST_EVENT_IE_CEL_EVENT_TIME_USEC = 0x000c,
    /*!
     * \brief Channel Event User Event Name
     * Used by: AST_EVENT_CEL
     * Payload type: STR
     */
    AST_EVENT_IE_CEL_USEREVENT_NAME  = 0x000d,
    /*!
     * \brief Channel Event CID name
     * Used by: AST_EVENT_CEL
     * Payload type: STR
     */
    AST_EVENT_IE_CEL_CIDNAME         = 0x000e,
    /*!
     * \brief Channel Event CID num
     * Used by: AST_EVENT_CEL
     * Payload type: STR
     */
    AST_EVENT_IE_CEL_CIDNUM          = 0x000f,
    /*!
     * \brief Channel Event extension name
     * Used by: AST_EVENT_CEL
     * Payload type: STR
     */
    AST_EVENT_IE_CEL_EXTEN           = 0x0010,
    /*!
     * \brief Channel Event context name
     * Used by: AST_EVENT_CEL
     * Payload type: STR
     */
    AST_EVENT_IE_CEL_CONTEXT         = 0x0011,
    /*!
     * \brief Channel Event channel name
     * Used by: AST_EVENT_CEL
     * Payload type: STR
     */
    AST_EVENT_IE_CEL_CHANNAME        = 0x0012,
    /*!
     * \brief Channel Event app name
     * Used by: AST_EVENT_CEL
     * Payload type: STR
     */
    AST_EVENT_IE_CEL_APPNAME         = 0x0013,
    /*!
     * \brief Channel Event app args/data
     * Used by: AST_EVENT_CEL
     * Payload type: STR
     */
    AST_EVENT_IE_CEL_APPDATA         = 0x0014,
    /*!
     * \brief Channel Event AMA flags
     * Used by: AST_EVENT_CEL
     * Payload type: UINT
     */
    AST_EVENT_IE_CEL_AMAFLAGS        = 0x0015,
    /*!
     * \brief Channel Event AccountCode
     * Used by: AST_EVENT_CEL
     * Payload type: STR
     */
    AST_EVENT_IE_CEL_ACCTCODE        = 0x0016,
    /*!
     * \brief Channel Event UniqueID
     * Used by: AST_EVENT_CEL
     * Payload type: STR
     */
    AST_EVENT_IE_CEL_UNIQUEID        = 0x0017,
    /*!
     * \brief Channel Event Userfield
     * Used by: AST_EVENT_CEL
     * Payload type: STR
     */
    AST_EVENT_IE_CEL_USERFIELD       = 0x0018,
    /*!
     * \brief Channel Event CID ANI field
     * Used by: AST_EVENT_CEL
     * Payload type: STR
     */
    AST_EVENT_IE_CEL_CIDANI          = 0x0019,
    /*!
     * \brief Channel Event CID RDNIS field
     * Used by: AST_EVENT_CEL
     * Payload type: STR
     */
    AST_EVENT_IE_CEL_CIDRDNIS        = 0x001a,
    /*!
     * \brief Channel Event CID dnid
     * Used by: AST_EVENT_CEL
     * Payload type: STR
     */
    AST_EVENT_IE_CEL_CIDDNID         = 0x001b,
    /*!
     * \brief Channel Event Peer -- for Things involving multiple channels, like BRIDGE
     * Used by: AST_EVENT_CEL
     * Payload type: STR
     */
    AST_EVENT_IE_CEL_PEER            = 0x001c,
    /*!
     * \brief Channel Event LinkedID
     * Used by: AST_EVENT_CEL
     * Payload type: STR
     */
    AST_EVENT_IE_CEL_LINKEDID        = 0x001d,
    /*!
     * \brief Channel Event peeraccount
     * Used by: AST_EVENT_CEL
     * Payload type: STR
     */
    AST_EVENT_IE_CEL_PEERACCT        = 0x001e,
    /*!
     * \brief Channel Event extra data
     * Used by: AST_EVENT_CEL
     * Payload type: STR
     */
    AST_EVENT_IE_CEL_EXTRA           = 0x001f,
    /*!
     * \brief Description
     * Used by: AST_EVENT_SUB, AST_EVENT_UNSUB
     * Payload type: STR
     */
    AST_EVENT_IE_DESCRIPTION         = 0x0020,
    /*!
     * \brief Entity ID
     * Used by All events
     * Payload type: RAW
     * This IE indicates which server the event originated from
     */
    AST_EVENT_IE_EID                 = 0x0021,
    AST_EVENT_IE_SECURITY_EVENT      = 0x0022,
    AST_EVENT_IE_EVENT_VERSION       = 0x0023,
    AST_EVENT_IE_SERVICE             = 0x0024,
    AST_EVENT_IE_MODULE              = 0x0025,
    AST_EVENT_IE_ACCOUNT_ID          = 0x0026,
    AST_EVENT_IE_SESSION_ID          = 0x0027,
    AST_EVENT_IE_SESSION_TV          = 0x0028,
    AST_EVENT_IE_ACL_NAME            = 0x0029,
    AST_EVENT_IE_LOCAL_ADDR          = 0x002a,
    AST_EVENT_IE_REMOTE_ADDR         = 0x002b,
    AST_EVENT_IE_EVENT_TV            = 0x002c,
    AST_EVENT_IE_REQUEST_TYPE        = 0x002d,
    AST_EVENT_IE_REQUEST_PARAMS      = 0x002e,
    AST_EVENT_IE_AUTH_METHOD         = 0x002f,
    AST_EVENT_IE_SEVERITY            = 0x0030,
    AST_EVENT_IE_EXPECTED_ADDR       = 0x0031,
    AST_EVENT_IE_CHALLENGE           = 0x0032,
    AST_EVENT_IE_RESPONSE            = 0x0033,
    AST_EVENT_IE_EXPECTED_RESPONSE   = 0x0034,
    AST_EVENT_IE_RECEIVED_CHALLENGE  = 0x0035,
    AST_EVENT_IE_RECEIVED_HASH       = 0x0036,
    AST_EVENT_IE_USING_PASSWORD      = 0x0037,
    AST_EVENT_IE_ATTEMPTED_TRANSPORT = 0x0038,
    AST_EVENT_IE_PRESENCE_PROVIDER   = 0x0039,
    AST_EVENT_IE_PRESENCE_STATE      = 0x003a,
    AST_EVENT_IE_PRESENCE_SUBTYPE    = 0x003b,
    AST_EVENT_IE_PRESENCE_MESSAGE    = 0x003c,
 
    /*!
     * \brief Event non-cacheability flag
     * Used by: All events
     * Payload type: UINT
     */
    AST_EVENT_IE_CACHABLE            = 0x003d,
 
    /*!
     * \brief Cluster node ID
     * Used by: Corosync
     * Payload type: UINT
     */
    AST_EVENT_IE_NODE_ID             = 0x003e,
    /*! \brief Must be the last IE value +1 */
    AST_EVENT_IE_TOTAL               = 0x003f,
};
 
/*!
 * \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,
    /*! Bit flags (unsigned integer, compared using boolean logic) */
    AST_EVENT_IE_PLTYPE_BITFLAGS,
};
 
/*! \brief Results for checking for subscribers */
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_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 */