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596 lines
24 KiB
596 lines
24 KiB
/*
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* Asterisk -- A telephony toolkit for Linux.
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*
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* Core PBX routines and definitions.
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*
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* Copyright (C) 1999, Mark Spencer
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*
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* Mark Spencer <markster@linux-support.net>
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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
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*/
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#ifndef _ASTERISK_PBX_H
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#define _ASTERISK_PBX_H
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#include <asterisk/sched.h>
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#include <asterisk/channel.h>
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#if defined(__cplusplus) || defined(c_plusplus)
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extern "C" {
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#endif
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#define AST_PBX_KEEP 0
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#define AST_PBX_REPLACE 1
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/*! Max length of an application */
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#define AST_MAX_APP 32
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/*! Special return values from applications to the PBX */
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#define AST_PBX_KEEPALIVE 10 /* Destroy the thread, but don't hang up the channel */
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#define AST_PBX_NO_HANGUP_PEER 11
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/*! Special Priority for an hint */
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#define PRIORITY_HINT -1
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/*! Extension states */
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/*! No device INUSE or BUSY */
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#define AST_EXTENSION_NOT_INUSE 0
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/*! One or more devices INUSE */
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#define AST_EXTENSION_INUSE 1
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/*! All devices BUSY */
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#define AST_EXTENSION_BUSY 2
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/*! All devices UNAVAILABLE/UNREGISTERED */
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#define AST_EXTENSION_UNAVAILABLE 3
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struct ast_context;
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struct ast_exten;
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struct ast_include;
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struct ast_ignorepat;
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struct ast_sw;
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typedef int (*ast_state_cb_type)(char *context, char* id, int state, void *data);
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typedef int (*ast_devstate_cb_type)(const char *dev, int state, void *data);
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/*! Data structure associated with an asterisk switch */
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struct ast_switch {
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/*! NULL */
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struct ast_switch *next;
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/*! Name of the switch */
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const char *name;
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/*! Description of the switch */
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const char *description;
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int (*exists)(struct ast_channel *chan, const char *context, const char *exten, int priority, const char *callerid, const char *data);
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int (*canmatch)(struct ast_channel *chan, const char *context, const char *exten, int priority, const char *callerid, const char *data);
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int (*exec)(struct ast_channel *chan, const char *context, const char *exten, int priority, const char *callerid, int newstack, const char *data);
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int (*matchmore)(struct ast_channel *chan, const char *context, const char *exten, int priority, const char *callerid, const char *data);
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};
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struct ast_timing {
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int hastime; /* If time construct exists */
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unsigned int monthmask; /* Mask for month */
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unsigned int daymask; /* Mask for date */
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unsigned int dowmask; /* Mask for day of week (mon-sun) */
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unsigned int minmask[24]; /* Mask for minute */
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};
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extern int ast_build_timing(struct ast_timing *i, char *info);
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extern int ast_check_timing(struct ast_timing *i);
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struct ast_pbx {
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int dtimeout; /* Timeout between digits (seconds) */
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int rtimeout; /* Timeout for response
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(seconds) */
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};
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/*! Register an alternative switch */
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/*!
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* \param sw switch to register
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* This function registers a populated ast_switch structure with the
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* asterisk switching architecture.
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* It returns 0 on success, and other than 0 on failure
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*/
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extern int ast_register_switch(struct ast_switch *sw);
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/*! Unregister an alternative switch */
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/*!
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* \param sw switch to unregister
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* Unregisters a switch from asterisk.
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* Returns nothing
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*/
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extern void ast_unregister_switch(struct ast_switch *sw);
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/*! Look up an application */
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/*!
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* \param app name of the app
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* This function searches for the ast_app structure within
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* the apps that are registered for the one with the name
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* you passed in.
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* Returns the ast_app structure that matches on success, or NULL on failure
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*/
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extern struct ast_app *pbx_findapp(const char *app);
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/*! executes an application */
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/*!
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* \param c channel to execute on
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* \param app which app to execute
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* \param data the data passed into the app
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* \param newstack stack pointer
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* This application executes an application on a given channel. It
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* saves the stack and executes the given appliation passing in
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* the given data.
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* It returns 0 on success, and -1 on failure
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*/
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int pbx_exec(struct ast_channel *c, struct ast_app *app, void *data, int newstack);
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/*! Register a new context */
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/*!
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* \param extcontexts pointer to the ast_context structure pointer
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* \param name name of the new context
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* \param registrar registrar of the context
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* This will first search for a context with your name. If it exists already, it will not
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* create a new one. If it does not exist, it will create a new one with the given name
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* and registrar.
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* It returns NULL on failure, and an ast_context structure on success
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*/
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struct ast_context *ast_context_create(struct ast_context **extcontexts, const char *name, const char *registrar);
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/*! Merge the temporary contexts into a global contexts list and delete from the global list the ones that are being added */
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/*!
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* \param extcontexts pointer to the ast_context structure pointer
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* \param registar of the context; if it's set the routine will delete all contexts that belong to that registrar; if NULL only the contexts that are specified in extcontexts
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*/
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void ast_merge_contexts_and_delete(struct ast_context **extcontexts, const char *registrar);
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/*! Destroy a context (matches the specified context (or ANY context if NULL) */
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/*!
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* \param con context to destroy
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* \param registrar who registered it
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* You can optionally leave out either parameter. It will find it
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* based on either the ast_context or the registrar name.
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* Returns nothing
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*/
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void ast_context_destroy(struct ast_context *con, const char *registrar);
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/*! Find a context */
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/*!
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* \param name name of the context to find
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* Will search for the context with the given name.
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* Returns the ast_context on success, NULL on failure.
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*/
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struct ast_context *ast_context_find(const char *name);
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/*! Create a new thread and start the PBX (or whatever) */
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/*!
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* \param c channel to start the pbx on
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* Starts a pbx thread on a given channel
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* It returns -1 on failure, and 0 on success
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*/
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int ast_pbx_start(struct ast_channel *c);
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/*! Execute the PBX in the current thread */
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/*!
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* \param c channel to run the pbx on
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* This executes the PBX on a given channel. It allocates a new
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* PBX structure for the channel, and provides all PBX functionality.
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*/
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int ast_pbx_run(struct ast_channel *c);
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/*!
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* \param context context to add the extension to
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* \param replace
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* \param extension extension to add
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* \param priority priority level of extension addition
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* \param callerid callerid of extension
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* \param application application to run on the extension with that priority level
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* \param data data to pass to the application
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* \param datad
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* \param registrar who registered the extension
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* Add and extension to an extension context.
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* Callerid is a pattern to match CallerID, or NULL to match any callerid
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* Returns 0 on success, -1 on failure
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*/
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int ast_add_extension(const char *context, int replace, const char *extension, int priority, const char *label, const char *callerid,
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const char *application, void *data, void (*datad)(void *), const char *registrar);
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/*! Add an extension to an extension context, this time with an ast_context *. CallerID is a pattern to match on callerid, or NULL to not care about callerid */
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/*!
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* For details about the arguements, check ast_add_extension()
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*/
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int ast_add_extension2(struct ast_context *con,
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int replace, const char *extension, int priority, const char *label, const char *callerid,
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const char *application, void *data, void (*datad)(void *),
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const char *registrar);
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/*! Add an application. The function 'execute' should return non-zero if the line needs to be hung up. */
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/*!
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\param app Short name of the application
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\param execute a function callback to execute the application
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\param synopsis a short description of the application
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\param description long description of the application
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Include a one-line synopsis (e.g. 'hangs up a channel') and a more lengthy, multiline
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description with more detail, including under what conditions the application
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will return 0 or -1.
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This registers an application with asterisks internal application list. Please note:
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The individual applications themselves are responsible for registering and unregistering
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CLI commands.
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It returns 0 on success, -1 on failure.
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*/
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int ast_register_application(const char *app, int (*execute)(struct ast_channel *, void *),
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const char *synopsis, const char *description);
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/*! Remove an application */
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/*!
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* \param app name of the application (does not have to be the same string as the one that was registered)
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* This unregisters an application from asterisk's internal registration mechanisms.
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* It returns 0 on success, and -1 on failure.
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*/
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int ast_unregister_application(const char *app);
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/*! Uses hint and devicestate callback to get the state of an extension */
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/*!
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* \param c this is not important
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* \param context which context to look in
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* \param exten which extension to get state
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* Returns extension state !! = AST_EXTENSION_???
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*/
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int ast_extension_state(struct ast_channel *c, char *context, char *exten);
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/*! Tells Asterisk the State for Device is changed */
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/*!
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* \param fmt devicename like a dialstring with format parameters
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* Asterisk polls the new extensionstates and calls the registered
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* callbacks for the changed extensions
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* Returns 0 on success, -1 on failure
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*/
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int ast_device_state_changed(const char *fmt, ...)
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__attribute__ ((format (printf, 1, 2)));
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/*! Registers a state change callback */
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/*!
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* \param context which context to look in
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* \param exten which extension to get state
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* \param callback callback to call if state changed
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* \param data to pass to callback
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* The callback is called if the state for extension is changed
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* Return -1 on failure, ID on success
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*/
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int ast_extension_state_add(const char *context, const char *exten,
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ast_state_cb_type callback, void *data);
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/*! Registers a device state change callback */
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/*!
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* \param data to pass to callback
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* The callback is called if the state for extension is changed
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* Return -1 on failure, ID on success
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*/
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int ast_devstate_add(ast_devstate_cb_type callback, void *data);
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void ast_devstate_del(ast_devstate_cb_type callback, void *data);
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/*! Deletes a registered state change callback by ID */
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/*!
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* \param id of the callback to delete
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* Removes the callback from list of callbacks
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* Return 0 on success, -1 on failure
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*/
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int ast_extension_state_del(int id, ast_state_cb_type callback);
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/*! If an extension exists, return non-zero */
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/*!
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* \param hint buffer for hint
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* \param maxlen size of hint buffer
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* \param hint buffer for name portion of hint
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* \param maxlen size of name buffer
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* \param c this is not important
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* \param context which context to look in
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* \param exten which extension to search for
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* If an extension within the given context with the priority PRIORITY_HINT
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* is found a non zero value will be returned.
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* Otherwise, 0 is returned.
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*/
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int ast_get_hint(char *hint, int maxlen, char *name, int maxnamelen, struct ast_channel *c, const char *context, const char *exten);
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/*! If an extension exists, return non-zero */
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/* work */
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/*!
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* \param c this is not important
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* \param context which context to look in
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* \param exten which extension to search for
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* \param priority priority of the action within the extension
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* \param callerid callerid to search for
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* If an extension within the given context(or callerid) with the given priority is found a non zero value will be returned.
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* Otherwise, 0 is returned.
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*/
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int ast_exists_extension(struct ast_channel *c, const char *context, const char *exten, int priority, const char *callerid);
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/*! If an extension exists, return non-zero */
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/* work */
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/*!
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* \param c this is not important
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* \param context which context to look in
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* \param exten which extension to search for
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* \param labellabel of the action within the extension to match to priority
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* \param callerid callerid to search for
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* If an priority which matches given label in extension or -1 if not found.
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\ */
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int ast_findlabel_extension(struct ast_channel *c, const char *context, const char *exten, const char *label, const char *callerid);
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int ast_findlabel_extension2(struct ast_channel *c, struct ast_context *con, const char *exten, const char *label, const char *callerid);
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/*! Looks for a valid matching extension */
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/*!
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\param c not really important
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\param context context to serach within
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\param exten extension to check
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\param priority priority of extension path
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\param callerid callerid of extension being searched for
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If "exten" *could be* a valid extension in this context with or without
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some more digits, return non-zero. Basically, when this returns 0, no matter
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what you add to exten, it's not going to be a valid extension anymore
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*/
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int ast_canmatch_extension(struct ast_channel *c, const char *context, const char *exten, int priority, const char *callerid);
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/*! Looks to see if adding anything to this extension might match something. (exists ^ canmatch) */
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/*!
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\param c not really important
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\param context context to serach within
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\param exten extension to check
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\param priority priority of extension path
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\param callerid callerid of extension being searched for
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If "exten" *could match* a valid extension in this context with
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some more digits, return non-zero. Does NOT return non-zero if this is
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an exact-match only. Basically, when this returns 0, no matter
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what you add to exten, it's not going to be a valid extension anymore
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*/
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int ast_matchmore_extension(struct ast_channel *c, const char *context, const char *exten, int priority, const char *callerid);
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/*! Determine if a given extension matches a given pattern (in NXX format) */
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/*!
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* \param pattern pattern to match
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* \param extension extension to check against the pattern.
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* Checks whether or not the given extension matches the given pattern.
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* Returns 1 on match, 0 on failure
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*/
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int ast_extension_match(const char *pattern, const char *extension);
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int ast_extension_close(const char *pattern, const char *data, int needmore);
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/*! Launch a new extension (i.e. new stack) */
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/*!
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* \param c not important
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* \param context which context to generate the extension within
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* \param exten new extension to add
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* \param priority priority of new extension
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* \param callerid callerid of extension
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* This adds a new extension to the asterisk extension list.
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* It returns 0 on success, -1 on failure.
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*/
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int ast_spawn_extension(struct ast_channel *c, const char *context, const char *exten, int priority, const char *callerid);
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/*! Execute an extension. */
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/*!
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\param c channel to execute upon
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\param context which context extension is in
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\param exten extension to execute
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\param priority priority to execute within the given extension
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If it's not available, do whatever you should do for
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default extensions and halt the thread if necessary. This function does not
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return, except on error.
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*/
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int ast_exec_extension(struct ast_channel *c, const char *context, const char *exten, int priority, const char *callerid);
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/*! Add an include */
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/*!
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\param context context to add include to
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\param include new include to add
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\param registrar who's registering it
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Adds an include taking a char * string as the context parameter
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Returns 0 on success, -1 on error
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*/
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int ast_context_add_include(const char *context, const char *include, const char *registrar);
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/*! Add an include */
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/*!
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\param con context to add the include to
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\param include include to add
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\param registrar who registered the context
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Adds an include taking a struct ast_context as the first parameter
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Returns 0 on success, -1 on failure
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*/
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int ast_context_add_include2(struct ast_context *con, const char *include, const char *registrar);
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/*! Removes an include */
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/*!
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* See add_include
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*/
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int ast_context_remove_include(const char *context, const char *include,const char *registrar);
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/*! Removes an include by an ast_context structure */
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/*!
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* See add_include2
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*/
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int ast_context_remove_include2(struct ast_context *con, const char *include, const char *registrar);
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/*! Verifies includes in an ast_contect structure */
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/*!
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* \param con context in which to verify the includes
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* Returns 0 if no problems found, -1 if there were any missing context
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*/
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int ast_context_verify_includes(struct ast_context *con);
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/*! Add a switch */
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/*!
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* \param context context to which to add the switch
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* \param sw switch to add
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* \param data data to pass to switch
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* \param eval whether to evaluate variables when running switch
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* \param registrar whoever registered the switch
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* This function registers a switch with the asterisk switch architecture
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* It returns 0 on success, -1 on failure
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*/
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int ast_context_add_switch(const char *context, const char *sw, const char *data, int eval, const char *registrar);
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/*! Adds a switch (first param is a ast_context) */
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/*!
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* See ast_context_add_switch()
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*/
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int ast_context_add_switch2(struct ast_context *con, const char *sw, const char *data, int eval, const char *registrar);
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/*! Remove a switch */
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/*!
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* Removes a switch with the given parameters
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* Returns 0 on success, -1 on failure
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*/
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int ast_context_remove_switch(const char *context, const char *sw, const char *data, const char *registrar);
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int ast_context_remove_switch2(struct ast_context *con, const char *sw, const char *data, const char *registrar);
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/*! Simply remove extension from context */
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/*!
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* \param context context to remove extension from
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* \param extension which extension to remove
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* \param priority priority of extension to remove
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* \param registrar registrar of the extension
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* This function removes an extension from a given context.
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* Returns 0 on success, -1 on failure
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*/
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int ast_context_remove_extension(const char *context, const char *extension, int priority,
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const char *registrar);
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int ast_context_remove_extension2(struct ast_context *con, const char *extension,
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int priority, const char *registrar);
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/*! Add an ignorepat */
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/*!
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* \param context which context to add the ignorpattern to
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* \param ignorpat ignorepattern to set up for the extension
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* \param registrar registrar of the ignore pattern
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* Adds an ignore pattern to a particular context.
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* Returns 0 on success, -1 on failure
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*/
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int ast_context_add_ignorepat(const char *context, const char *ignorepat, const char *registrar);
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int ast_context_add_ignorepat2(struct ast_context *con, const char *ignorepat, const char *registrar);
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/* Remove an ignorepat */
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/*!
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* \param context context from which to remove the pattern
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* \param ignorepat the pattern to remove
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* \param registrar the registrar of the ignore pattern
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* This removes the given ignorepattern
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* Returns 0 on success, -1 on failure
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|
*/
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int ast_context_remove_ignorepat(const char *context, const char *ignorepat, const char *registrar);
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int ast_context_remove_ignorepat2(struct ast_context *con, const char *ignorepat, const char *registrar);
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|
|
|
/*! Checks to see if a number should be ignored */
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|
/*!
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|
* \param context context to search within
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|
* \param extension to check whether it should be ignored or not
|
|
* Check if a number should be ignored with respect to dialtone cancellation.
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|
* Returns 0 if the pattern should not be ignored, or non-zero if the pattern should be ignored
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|
*/
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|
int ast_ignore_pattern(const char *context, const char *pattern);
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|
|
|
/* Locking functions for outer modules, especially for completion functions */
|
|
/*! Locks the contexts */
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|
/*! Locks the context list
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|
* Returns 0 on success, -1 on error
|
|
*/
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|
int ast_lock_contexts(void);
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|
|
|
/*! Unlocks contexts */
|
|
/*!
|
|
* Returns 0 on success, -1 on failure
|
|
*/
|
|
int ast_unlock_contexts(void);
|
|
|
|
/*! Locks a given context */
|
|
/*!
|
|
* \param con context to lock
|
|
* Locks the context.
|
|
* Returns 0 on success, -1 on failure
|
|
*/
|
|
int ast_lock_context(struct ast_context *con);
|
|
/*! Unlocks the given context */
|
|
/*!
|
|
* \param con context to unlock
|
|
* Unlocks the given context
|
|
* Returns 0 on success, -1 on failure
|
|
*/
|
|
int ast_unlock_context(struct ast_context *con);
|
|
|
|
|
|
int ast_async_goto(struct ast_channel *chan, const char *context, const char *exten, int priority);
|
|
|
|
int ast_async_goto_by_name(const char *chan, const char *context, const char *exten, int priority);
|
|
|
|
/* Synchronously or asynchronously make an outbound call and send it to a
|
|
particular extension */
|
|
int ast_pbx_outgoing_exten(const char *type, int format, void *data, int timeout, const char *context, const char *exten, int priority, int *reason, int sync, const char *cid_num, const char *cid_name, const char *variable, const char *account, struct ast_channel **locked_channel);
|
|
|
|
/* Synchronously or asynchronously make an outbound call and send it to a
|
|
particular application with given extension */
|
|
int ast_pbx_outgoing_app(const char *type, int format, void *data, int timeout, const char *app, const char *appdata, int *reason, int sync, const char *cid_num, const char *cid_name, const char *variable, const char *account, struct ast_channel **locked_channel);
|
|
|
|
/* Functions for returning values from structures */
|
|
const char *ast_get_context_name(struct ast_context *con);
|
|
const char *ast_get_extension_name(struct ast_exten *exten);
|
|
const char *ast_get_include_name(struct ast_include *include);
|
|
const char *ast_get_ignorepat_name(struct ast_ignorepat *ip);
|
|
const char *ast_get_switch_name(struct ast_sw *sw);
|
|
const char *ast_get_switch_data(struct ast_sw *sw);
|
|
|
|
/* Other extension stuff */
|
|
int ast_get_extension_priority(struct ast_exten *exten);
|
|
int ast_get_extension_matchcid(struct ast_exten *e);
|
|
const char *ast_get_extension_cidmatch(struct ast_exten *e);
|
|
const char *ast_get_extension_app(struct ast_exten *e);
|
|
const char *ast_get_extension_label(struct ast_exten *e);
|
|
void *ast_get_extension_app_data(struct ast_exten *e);
|
|
|
|
/* Registrar info functions ... */
|
|
const char *ast_get_context_registrar(struct ast_context *c);
|
|
const char *ast_get_extension_registrar(struct ast_exten *e);
|
|
const char *ast_get_include_registrar(struct ast_include *i);
|
|
const char *ast_get_ignorepat_registrar(struct ast_ignorepat *ip);
|
|
const char *ast_get_switch_registrar(struct ast_sw *sw);
|
|
|
|
/* Walking functions ... */
|
|
struct ast_context *ast_walk_contexts(struct ast_context *con);
|
|
struct ast_exten *ast_walk_context_extensions(struct ast_context *con,
|
|
struct ast_exten *priority);
|
|
struct ast_exten *ast_walk_extension_priorities(struct ast_exten *exten,
|
|
struct ast_exten *priority);
|
|
struct ast_include *ast_walk_context_includes(struct ast_context *con,
|
|
struct ast_include *inc);
|
|
struct ast_ignorepat *ast_walk_context_ignorepats(struct ast_context *con,
|
|
struct ast_ignorepat *ip);
|
|
struct ast_sw *ast_walk_context_switches(struct ast_context *con, struct ast_sw *sw);
|
|
|
|
int pbx_builtin_serialize_variables(struct ast_channel *chan, char *buf, size_t size);
|
|
extern char *pbx_builtin_getvar_helper(struct ast_channel *chan, char *name);
|
|
extern void pbx_builtin_setvar_helper(struct ast_channel *chan, char *name, char *value);
|
|
extern void pbx_retrieve_variable(struct ast_channel *c, const char *var, char **ret, char *workspace, int workspacelen, struct varshead *headp);
|
|
extern void pbx_builtin_clear_globals(void);
|
|
extern int pbx_builtin_setvar(struct ast_channel *chan, void *data);
|
|
extern void pbx_substitute_variables_helper(struct ast_channel *c,const char *cp1,char *cp2,int count);
|
|
extern void pbx_substitute_variables_varshead(struct varshead *headp, const char *cp1, char *cp2, int count);
|
|
|
|
int ast_extension_patmatch(const char *pattern, const char *data);
|
|
|
|
/* Set "autofallthrough" flag, if newval is <0, does not acutally set. If
|
|
set to 1, sets to auto fall through. If newval set to 0, sets to no auto
|
|
fall through (reads extension instead). Returns previous value. */
|
|
extern int pbx_set_autofallthrough(int newval);
|
|
int ast_goto_if_exists(struct ast_channel *chan, char* context, char *exten, int priority);
|
|
/* I can find neither parsable nor parseable at dictionary.com, but google gives me 169000 hits for parseable and only 49,800 for parsable */
|
|
int ast_parseable_goto(struct ast_channel *chan, const char *goto_string);
|
|
int ast_explicit_goto(struct ast_channel *chan, const char *context, const char *exten, int priority);
|
|
int ast_async_goto_if_exists(struct ast_channel *chan, char* context, char *exten, int priority);
|
|
#if defined(__cplusplus) || defined(c_plusplus)
|
|
}
|
|
#endif
|
|
|
|
|
|
#endif
|