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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2016, CFWare, LLC
*
* Corey Farrell <git@cfware.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
*
* \brief PBX switch routines.
*
* \author Corey Farrell <git@cfware.com>
*/
/*** MODULEINFO
<support_level>core</support_level>
***/
#include "asterisk.h"
#include "asterisk/_private.h"
#include "asterisk/cli.h"
#include "asterisk/linkedlists.h"
#include "asterisk/pbx.h"
#include "pbx_private.h"
static AST_RWLIST_HEAD_STATIC(switches, ast_switch);
struct ast_switch *pbx_findswitch(const char *sw)
{
struct ast_switch *asw;
AST_RWLIST_RDLOCK(&switches);
AST_RWLIST_TRAVERSE(&switches, asw, list) {
if (!strcasecmp(asw->name, sw))
break;
}
AST_RWLIST_UNLOCK(&switches);
return asw;
}
/*
* Append to the list. We don't have a tail pointer because we need
* to scan the list anyways to check for duplicates during insertion.
*/
int ast_register_switch(struct ast_switch *sw)
{
struct ast_switch *tmp;
AST_RWLIST_WRLOCK(&switches);
AST_RWLIST_TRAVERSE(&switches, tmp, list) {
if (!strcasecmp(tmp->name, sw->name)) {
AST_RWLIST_UNLOCK(&switches);
ast_log(LOG_WARNING, "Switch '%s' already found\n", sw->name);
return -1;
}
}
AST_RWLIST_INSERT_TAIL(&switches, sw, list);
AST_RWLIST_UNLOCK(&switches);
return 0;
}
void ast_unregister_switch(struct ast_switch *sw)
{
AST_RWLIST_WRLOCK(&switches);
AST_RWLIST_REMOVE(&switches, sw, list);
AST_RWLIST_UNLOCK(&switches);
}
/*! \brief handle_show_switches: CLI support for listing registered dial plan switches */
static char *handle_show_switches(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
struct ast_switch *sw;
switch (cmd) {
case CLI_INIT:
e->command = "core show switches";
e->usage =
"Usage: core show switches\n"
" List registered switches\n";
return NULL;
case CLI_GENERATE:
return NULL;
}
AST_RWLIST_RDLOCK(&switches);
if (AST_RWLIST_EMPTY(&switches)) {
AST_RWLIST_UNLOCK(&switches);
ast_cli(a->fd, "There are no registered alternative switches\n");
return CLI_SUCCESS;
}
ast_cli(a->fd, "\n -= Registered Asterisk Alternative Switches =-\n");
AST_RWLIST_TRAVERSE(&switches, sw, list)
ast_cli(a->fd, "%s: %s\n", sw->name, sw->description);
AST_RWLIST_UNLOCK(&switches);
return CLI_SUCCESS;
}
static struct ast_cli_entry sw_cli[] = {
AST_CLI_DEFINE(handle_show_switches, "Show alternative switches"),
};
static void unload_pbx_switch(void)
{
ast_cli_unregister_multiple(sw_cli, ARRAY_LEN(sw_cli));
}
int load_pbx_switch(void)
{
ast_cli_register_multiple(sw_cli, ARRAY_LEN(sw_cli));
ast_register_cleanup(unload_pbx_switch);
return 0;
}
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