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614 lines
21 KiB
614 lines
21 KiB
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2005, Digium, Inc.
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*
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* Mark Spencer <markster@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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#ifndef _ASTERISK_MANAGER_H
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#define _ASTERISK_MANAGER_H
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#include "asterisk/network.h"
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#include "asterisk/lock.h"
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#include "asterisk/datastore.h"
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#include "asterisk/xmldoc.h"
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/*!
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\file
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\brief The AMI - Asterisk Manager Interface - is a TCP protocol created to
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manage Asterisk with third-party software.
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Manager protocol packages are text fields of the form a: b. There is
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always exactly one space after the colon.
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\verbatim
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For Actions replies, the first line of the reply is a "Response:" header with
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values "success", "error" or "follows". "Follows" implies that the
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response is coming as separate events with the same ActionID. If the
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Action request has no ActionID, it will be hard matching events
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to the Action request in the manager client.
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The first header type is the "Event" header. Other headers vary from
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event to event. Headers end with standard \\r\\n termination.
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The last line of the manager response or event is an empty line.
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(\\r\\n)
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\endverbatim
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\note Please try to \b re-use \b existing \b headers to simplify manager message parsing in clients.
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Don't re-use an existing header with a new meaning, please.
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You can find a reference of standard headers in doc/manager.txt
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- \ref manager.c Main manager code file
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*/
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#define AMI_VERSION "5.0.3"
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#define DEFAULT_MANAGER_PORT 5038 /* Default port for Asterisk management via TCP */
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#define DEFAULT_MANAGER_TLS_PORT 5039 /* Default port for Asterisk management via TCP */
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/*! \name Constant return values
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*\note Currently, returning anything other than zero causes the session to terminate.
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*/
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/*@{ */
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#define AMI_SUCCESS (0)
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#define AMI_DESTROY (-1)
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/*@} */
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/*! \name Manager event classes */
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/*@{ */
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#define EVENT_FLAG_SYSTEM (1 << 0) /* System events such as module load/unload */
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#define EVENT_FLAG_CALL (1 << 1) /* Call event, such as state change, etc */
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#define EVENT_FLAG_LOG (1 << 2) /* Log events */
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#define EVENT_FLAG_VERBOSE (1 << 3) /* Verbose messages */
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#define EVENT_FLAG_COMMAND (1 << 4) /* Ability to read/set commands */
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#define EVENT_FLAG_AGENT (1 << 5) /* Ability to read/set agent info */
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#define EVENT_FLAG_USER (1 << 6) /* Ability to read/set user info */
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#define EVENT_FLAG_CONFIG (1 << 7) /* Ability to modify configurations */
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#define EVENT_FLAG_DTMF (1 << 8) /* Ability to read DTMF events */
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#define EVENT_FLAG_REPORTING (1 << 9) /* Reporting events such as rtcp sent */
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#define EVENT_FLAG_CDR (1 << 10) /* CDR events */
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#define EVENT_FLAG_DIALPLAN (1 << 11) /* Dialplan events (VarSet, NewExten) */
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#define EVENT_FLAG_ORIGINATE (1 << 12) /* Originate a call to an extension */
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#define EVENT_FLAG_AGI (1 << 13) /* AGI events */
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#define EVENT_FLAG_HOOKRESPONSE (1 << 14) /* Hook Response */
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#define EVENT_FLAG_CC (1 << 15) /* Call Completion events */
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#define EVENT_FLAG_AOC (1 << 16) /* Advice Of Charge events */
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#define EVENT_FLAG_TEST (1 << 17) /* Test event used to signal the Asterisk Test Suite */
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#define EVENT_FLAG_SECURITY (1 << 18) /* Security Message as AMI Event */
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/*XXX Why shifted by 30? XXX */
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#define EVENT_FLAG_MESSAGE (1 << 30) /* MESSAGE events. */
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/*@} */
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/*! \brief Export manager structures */
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#define AST_MAX_MANHEADERS 128
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/*! \brief Manager Helper Function
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*
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* \param category The class authorization category of the event
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* \param event The name of the event being raised
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* \param body The body of the event
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*
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* \retval 0 Success
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* \retval non-zero Error
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*/
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typedef int (*manager_hook_t)(int category, const char *event, char *body);
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struct manager_custom_hook {
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/*! Identifier */
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char *file;
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/*! helper function */
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manager_hook_t helper;
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/*! Linked list information */
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AST_RWLIST_ENTRY(manager_custom_hook) list;
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};
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/*! \brief Check if AMI is enabled */
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int ast_manager_check_enabled(void);
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/*! \brief Check if AMI/HTTP is enabled */
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int ast_webmanager_check_enabled(void);
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/*! Add a custom hook to be called when an event is fired
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\param hook struct manager_custom_hook object to add
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*/
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void ast_manager_register_hook(struct manager_custom_hook *hook);
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/*! Delete a custom hook to be called when an event is fired
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\param hook struct manager_custom_hook object to delete
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*/
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void ast_manager_unregister_hook(struct manager_custom_hook *hook);
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/*! \brief Registered hooks can call this function to invoke actions and they will receive responses through registered callback
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* \param hook the file identifier specified in manager_custom_hook struct when registering a hook
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* \param msg ami action mesage string e.g. "Action: SipPeers\r\n"
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* \retval 0 on Success
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* \retval non-zero on Failure
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*/
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int ast_hook_send_action(struct manager_custom_hook *hook, const char *msg);
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struct mansession;
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struct message {
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unsigned int hdrcount;
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const char *headers[AST_MAX_MANHEADERS];
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};
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struct manager_action {
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/*! Name of the action */
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const char *action;
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AST_DECLARE_STRING_FIELDS(
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AST_STRING_FIELD(synopsis); /*!< Synopsis text (short description). */
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AST_STRING_FIELD(description); /*!< Description (help text) */
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AST_STRING_FIELD(syntax); /*!< Syntax text */
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AST_STRING_FIELD(arguments); /*!< Description of each argument. */
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AST_STRING_FIELD(seealso); /*!< See also */
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);
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/*! Possible list element response events. */
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struct ast_xml_doc_item *list_responses;
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/*! Final response event. */
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struct ast_xml_doc_item *final_response;
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/*! Permission required for action. EVENT_FLAG_* */
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int authority;
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/*! Function to be called */
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int (*func)(struct mansession *s, const struct message *m);
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struct ast_module *module; /*!< Module this action belongs to */
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/*! Where the documentation come from. */
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enum ast_doc_src docsrc;
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/*! For easy linking */
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AST_RWLIST_ENTRY(manager_action) list;
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/*!
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* \brief TRUE if the AMI action is registered and the callback can be called.
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*
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* \note Needed to prevent a race between calling the callback
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* function and unregestring the AMI action object.
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*/
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unsigned int registered:1;
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};
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/*! \brief External routines may register/unregister manager callbacks this way
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* \note Use ast_manager_register2() to register with help text for new manager commands */
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#define ast_manager_register(action, authority, func, synopsis) ast_manager_register2(action, authority, func, AST_MODULE_SELF, synopsis, NULL)
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/*! \brief Register a manager callback using XML documentation to describe the manager. */
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#define ast_manager_register_xml(action, authority, func) ast_manager_register2(action, authority, func, AST_MODULE_SELF, NULL, NULL)
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/*!
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* \brief Register a manager callback using XML documentation to describe the manager.
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*
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* \note For Asterisk core modules that are not independently
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* loadable.
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*
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* \warning If you use ast_manager_register_xml() instead when
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* you need to use this function, Asterisk will crash on load.
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*/
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#define ast_manager_register_xml_core(action, authority, func) ast_manager_register2(action, authority, func, NULL, NULL, NULL)
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/*!
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* \brief Register a manager command with the manager interface
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* \param action Name of the requested Action:
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* \param authority Required authority for this command
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* \param func Function to call for this command
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* \param module The module containing func. (NULL if module is part of core and not loadable)
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* \param synopsis Help text (one line, up to 30 chars) for CLI manager show commands
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* \param description Help text, several lines
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*/
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int ast_manager_register2(
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const char *action,
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int authority,
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int (*func)(struct mansession *s, const struct message *m),
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struct ast_module *module,
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const char *synopsis,
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const char *description);
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/*!
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* \brief Unregister a registered manager command
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* \param action Name of registered Action:
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*/
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int ast_manager_unregister(const char *action);
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/*!
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* \brief Verify a session's read permissions against a permission mask.
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* \param ident session identity
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* \param perm permission mask to verify
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* \retval 1 if the session has the permission mask capabilities
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* \retval 0 otherwise
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*/
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int astman_verify_session_readpermissions(uint32_t ident, int perm);
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/*!
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* \brief Verify a session's write permissions against a permission mask.
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* \param ident session identity
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* \param perm permission mask to verify
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* \retval 1 if the session has the permission mask capabilities, otherwise 0
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* \retval 0 otherwise
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*/
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int astman_verify_session_writepermissions(uint32_t ident, int perm);
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/*! \brief External routines may send asterisk manager events this way
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* \param category Event category, matches manager authorization
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\param event Event name
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\param contents Contents of event
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*/
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/* XXX the parser in gcc 2.95 gets confused if you don't put a space
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* between the last arg before VA_ARGS and the comma */
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#define manager_event(category, event, contents , ...) \
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__ast_manager_event_multichan(category, event, 0, NULL, __FILE__, __LINE__, __PRETTY_FUNCTION__, contents , ## __VA_ARGS__)
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#define ast_manager_event(chan, category, event, contents , ...) \
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do { \
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struct ast_channel *_chans[] = { chan, }; \
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__ast_manager_event_multichan(category, event, 1, _chans, __FILE__, __LINE__, __PRETTY_FUNCTION__, contents , ## __VA_ARGS__); \
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} while (0)
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#define ast_manager_event_multichan(category, event, nchans, chans, contents , ...) \
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__ast_manager_event_multichan(category, event, nchans, chans, __FILE__, __LINE__, __PRETTY_FUNCTION__, contents , ## __VA_ARGS__);
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/*! External routines may send asterisk manager events this way
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* \param category Event category, matches manager authorization
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* \param event Event name
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* \param chancount Number of channels in chans parameter
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* \param chans A pointer to an array of channels involved in the event
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* \param file, line, func
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* \param contents Format string describing event
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* \param ...
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* \since 1.8
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*/
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int __ast_manager_event_multichan(int category, const char *event, int chancount,
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struct ast_channel **chans, const char *file, int line, const char *func,
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const char *contents, ...) __attribute__((format(printf, 8, 9)));
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/*! \brief Get header from mananger transaction */
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const char *astman_get_header(const struct message *m, char *var);
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/*! \brief Get a linked list of the Variable: headers
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*
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* \note Order of variables is reversed from the order they are specified in
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* the manager message
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*/
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struct ast_variable *astman_get_variables(const struct message *m);
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enum variable_orders {
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ORDER_NATURAL,
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ORDER_REVERSE
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};
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/*! \brief Get a linked list of the Variable: headers with order specified */
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struct ast_variable *astman_get_variables_order(const struct message *m, enum variable_orders order);
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/*! \brief Send error in manager transaction */
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void astman_send_error(struct mansession *s, const struct message *m, char *error);
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/*! \brief Send error in manager transaction (with va_args support) */
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void __attribute__((format(printf, 3, 4))) astman_send_error_va(struct mansession *s, const struct message *m, const char *fmt, ...);
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/*! \brief Send response in manager transaction */
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void astman_send_response(struct mansession *s, const struct message *m, char *resp, char *msg);
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/*! \brief Send ack in manager transaction */
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void astman_send_ack(struct mansession *s, const struct message *m, char *msg);
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/*!
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* \brief Send ack in manager transaction to begin a list.
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*
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* \param s - AMI session control struct.
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* \param m - AMI action request that started the list.
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* \param msg - Message contents describing the list to follow.
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* \param listflag - Should always be set to "start".
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*
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* \note You need to call astman_send_list_complete_start() and
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* astman_send_list_complete_end() to send the AMI list completion event.
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*
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* \return Nothing
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*/
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void astman_send_listack(struct mansession *s, const struct message *m, char *msg, char *listflag);
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/*!
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* \brief Start the list complete event.
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* \since 13.2.0
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*
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* \param s - AMI session control struct.
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* \param m - AMI action request that started the list.
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* \param event_name - AMI list complete event name.
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* \param count - Number of items in the list.
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*
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* \note You need to call astman_send_list_complete_end() to end
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* the AMI list completion event.
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*
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* \note Between calling astman_send_list_complete_start() and
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* astman_send_list_complete_end() you can add additonal headers
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* using astman_append().
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*
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* \return Nothing
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*/
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void astman_send_list_complete_start(struct mansession *s, const struct message *m, const char *event_name, int count);
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/*!
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* \brief End the list complete event.
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* \since 13.2.0
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*
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* \param s - AMI session control struct.
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*
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* \note You need to call astman_send_list_complete_start() to start
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* the AMI list completion event.
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*
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* \note Between calling astman_send_list_complete_start() and
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* astman_send_list_complete_end() you can add additonal headers
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* using astman_append().
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*
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* \return Nothing
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*/
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void astman_send_list_complete_end(struct mansession *s);
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void __attribute__((format(printf, 2, 3))) astman_append(struct mansession *s, const char *fmt, ...);
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/*! \brief Determinie if a manager session ident is authenticated */
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int astman_is_authed(uint32_t ident);
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/*!
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* \brief Add a datastore to a session
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*
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* \retval 0 success
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* \retval non-zero failure
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* \since 1.6.1
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*/
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int astman_datastore_add(struct mansession *s, struct ast_datastore *datastore);
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/*!
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* \brief Remove a datastore from a session
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*
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* \retval 0 success
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* \retval non-zero failure
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* \since 1.6.1
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*/
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int astman_datastore_remove(struct mansession *s, struct ast_datastore *datastore);
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/*!
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* \brief Find a datastore on a session
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*
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* \retval pointer to the datastore if found
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* \retval NULL if not found
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* \since 1.6.1
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*/
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struct ast_datastore *astman_datastore_find(struct mansession *s, const struct ast_datastore_info *info, const char *uid);
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/*!
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* \brief append an event header to an ast string
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* \since 12
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*
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* \param fields_string pointer to an ast_string pointer. It may be a pointer to a
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* NULL ast_str pointer, in which case the ast_str will be initialized.
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* \param header The header being applied
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* \param value the value of the header
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*
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* \retval 0 if successful
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* \retval non-zero on failure
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*/
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int ast_str_append_event_header(struct ast_str **fields_string,
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const char *header, const char *value);
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/*! \brief Struct representing a snapshot of channel state */
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struct ast_channel_snapshot;
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/*!
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* \brief Generate the AMI message body from a channel snapshot
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* \since 12
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*
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* \param snapshot the channel snapshot for which to generate an AMI message
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* body
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* \param prefix What to prepend to the channel fields
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*
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* \retval NULL on error
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* \retval ast_str* on success (must be ast_freed by caller)
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*/
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struct ast_str *ast_manager_build_channel_state_string_prefix(
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const struct ast_channel_snapshot *snapshot,
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const char *prefix);
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/*!
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* \brief Generate the AMI message body from a channel snapshot
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* \since 12
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*
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* \param snapshot the channel snapshot for which to generate an AMI message
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* body
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*
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* \retval NULL on error
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* \retval ast_str* on success (must be ast_freed by caller)
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*/
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struct ast_str *ast_manager_build_channel_state_string(
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const struct ast_channel_snapshot *snapshot);
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/*! \brief Struct representing a snapshot of bridge state */
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struct ast_bridge_snapshot;
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/*!
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* \since 12
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* \brief Callback used to determine whether a key should be skipped when converting a
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* JSON object to a manager blob
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* \param key Key from JSON blob to be evaluated
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* \retval non-zero if the key should be excluded
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* \retval zero if the key should not be excluded
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*/
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typedef int (*key_exclusion_cb)(const char *key);
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struct ast_json;
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/*!
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* \since 12
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* \brief Convert a JSON object into an AMI compatible string
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*
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* \param blob The JSON blob containing key/value pairs to convert
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* \param exclusion_cb A \ref key_exclusion_cb pointer to a function that will exclude
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* keys from the final AMI string
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*
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* \retval A malloc'd \ref ast_str object. Callers of this function should free
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* the returned \ref ast_str object
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* \retval NULL on error
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*/
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struct ast_str *ast_manager_str_from_json_object(struct ast_json *blob, key_exclusion_cb exclusion_cb);
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/*!
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* \brief Generate the AMI message body from a bridge snapshot
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* \since 12
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*
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* \param snapshot the bridge snapshot for which to generate an AMI message
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* body
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* \param prefix What to prepend to the bridge fields
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*
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* \retval NULL on error
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* \retval ast_str* on success (must be ast_freed by caller)
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*/
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struct ast_str *ast_manager_build_bridge_state_string_prefix(
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const struct ast_bridge_snapshot *snapshot,
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const char *prefix);
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/*!
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* \brief Generate the AMI message body from a bridge snapshot
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* \since 12
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*
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* \param snapshot the bridge snapshot for which to generate an AMI message
|
|
* body
|
|
*
|
|
* \retval NULL on error
|
|
* \retval ast_str* on success (must be ast_freed by caller)
|
|
*/
|
|
struct ast_str *ast_manager_build_bridge_state_string(
|
|
const struct ast_bridge_snapshot *snapshot);
|
|
|
|
/*! \brief Struct containing info for an AMI event to send out. */
|
|
struct ast_manager_event_blob {
|
|
int event_flags; /*!< Flags the event should be raised with. */
|
|
const char *manager_event; /*!< The event to be raised, should be a string literal. */
|
|
AST_DECLARE_STRING_FIELDS(
|
|
AST_STRING_FIELD(extra_fields); /*!< Extra fields to include in the event. */
|
|
);
|
|
};
|
|
|
|
/*!
|
|
* \since 12
|
|
* \brief Construct a \ref ast_manager_event_blob.
|
|
*
|
|
* The returned object is AO2 managed, so clean up with ao2_cleanup().
|
|
*
|
|
* \param event_flags Flags the event should be raised with.
|
|
* \param manager_event The event to be raised, should be a string literal.
|
|
* \param extra_fields_fmt Format string for extra fields to include.
|
|
* Or NO_EXTRA_FIELDS for no extra fields.
|
|
*
|
|
* \return New \ref ast_manager_snapshot_event object.
|
|
* \return \c NULL on error.
|
|
*/
|
|
struct ast_manager_event_blob *
|
|
__attribute__((format(printf, 3, 4)))
|
|
ast_manager_event_blob_create(
|
|
int event_flags,
|
|
const char *manager_event,
|
|
const char *extra_fields_fmt,
|
|
...);
|
|
|
|
/*! GCC warns about blank or NULL format strings. So, shenanigans! */
|
|
#define NO_EXTRA_FIELDS "%s", ""
|
|
|
|
/*!
|
|
* \since 12
|
|
* \brief Initialize support for AMI system events.
|
|
* \retval 0 on success
|
|
* \retval non-zero on error
|
|
*/
|
|
int manager_system_init(void);
|
|
|
|
/*!
|
|
* \brief Initialize support for AMI channel events.
|
|
* \retval 0 on success.
|
|
* \retval non-zero on error.
|
|
* \since 12
|
|
*/
|
|
int manager_channels_init(void);
|
|
|
|
/*!
|
|
* \since 12
|
|
* \brief Initialize support for AMI MWI events.
|
|
* \retval 0 on success
|
|
* \retval non-zero on error
|
|
*/
|
|
int manager_mwi_init(void);
|
|
|
|
/*!
|
|
* \brief Initialize support for AMI channel events.
|
|
* \return 0 on success.
|
|
* \return non-zero on error.
|
|
* \since 12
|
|
*/
|
|
int manager_bridging_init(void);
|
|
|
|
/*!
|
|
* \brief Initialize support for AMI endpoint events.
|
|
* \return 0 on success.
|
|
* \return non-zero on error.
|
|
* \since 12
|
|
*/
|
|
int manager_endpoints_init(void);
|
|
|
|
/*!
|
|
* \since 12
|
|
* \brief Get the \ref stasis_message_type for generic messages
|
|
*
|
|
* A generic AMI message expects a JSON only payload. The payload must have the following
|
|
* structure:
|
|
* {type: s, class_type: i, event: [ {s: s}, ...] }
|
|
*
|
|
* - type is the AMI event type
|
|
* - class_type is the class authorization type for the event
|
|
* - event is a list of key/value tuples to be sent out in the message
|
|
*
|
|
* \retval A \ref stasis_message_type for AMI messages
|
|
*/
|
|
struct stasis_message_type *ast_manager_get_generic_type(void);
|
|
|
|
/*!
|
|
* \since 12
|
|
* \brief Get the \ref stasis topic for AMI
|
|
*
|
|
* \retval The \ref stasis topic for AMI
|
|
* \retval NULL on error
|
|
*/
|
|
struct stasis_topic *ast_manager_get_topic(void);
|
|
|
|
/*!
|
|
* \since 12
|
|
* \brief Publish an event to AMI
|
|
*
|
|
* \param type The type of AMI event to publish
|
|
* \param class_type The class on which to publish the event
|
|
* \param obj The event data to be published.
|
|
*
|
|
* Publishes a message to the \ref stasis message bus solely for the consumption of AMI.
|
|
* The message will be of the type provided by \ref ast_manager_get_type, and will be
|
|
* published to the topic provided by \ref ast_manager_get_topic. As such, the JSON must
|
|
* be constructed as defined by the \ref ast_manager_get_type message.
|
|
*/
|
|
void ast_manager_publish_event(const char *type, int class_type, struct ast_json *obj);
|
|
|
|
/*!
|
|
* \since 12
|
|
* \brief Get the \ref stasis_message_router for AMI
|
|
*
|
|
* \retval The \ref stasis_message_router for AMI
|
|
* \retval NULL on error
|
|
*/
|
|
struct stasis_message_router *ast_manager_get_message_router(void);
|
|
|
|
#endif /* _ASTERISK_MANAGER_H */
|