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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"
- ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
- #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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