--- funcs/func_devstate.c 1970-01-01 01:00:00.000000000 +0100 +++ funcs/func_devstate.c 2010-04-15 22:42:27.000000000 +0200 @@ -0,0 +1,228 @@ +/* + * Asterisk -- An open source telephony toolkit. + * + * Copyright (C) 2007, Digium, Inc. + * + * Russell Bryant + * + * 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 Manually controlled blinky lights + * + * \author Russell Bryant + * + * \ingroup functions + * + * \note Props go out to Ahrimanes in #asterisk for requesting this at 4:30 AM + * when I couldn't sleep. :) + */ + +#include "asterisk.h" + +ASTERISK_FILE_VERSION(__FILE__, "$Revision: 4 $") + +#include + +#include "asterisk/module.h" +#include "asterisk/channel.h" +#include "asterisk/pbx.h" +#include "asterisk/utils.h" +#include "asterisk/linkedlists.h" +#include "asterisk/devicestate.h" +#include "asterisk/cli.h" +#include "asterisk/astdb.h" + +static const char astdb_family[] = "CustomDevstate"; + +static const char *ast_devstate_str(int state) +{ + const char *res = "UNKNOWN"; + + switch (state) { + case AST_DEVICE_UNKNOWN: + break; + case AST_DEVICE_NOT_INUSE: + res = "NOT_INUSE"; + break; + case AST_DEVICE_INUSE: + res = "INUSE"; + break; + case AST_DEVICE_BUSY: + res = "BUSY"; + break; + case AST_DEVICE_INVALID: + res = "INVALID"; + break; + case AST_DEVICE_UNAVAILABLE: + res = "UNAVAILABLE"; + break; + case AST_DEVICE_RINGING: + res = "RINGING"; + break; + case AST_DEVICE_RINGINUSE: + res = "RINGINUSE"; + break; + case AST_DEVICE_ONHOLD: + res = "ONHOLD"; + break; + } + + return res; +} + +static int ast_devstate_val(const char *val) +{ + if (!strcasecmp(val, "NOT_INUSE")) + return AST_DEVICE_NOT_INUSE; + else if (!strcasecmp(val, "INUSE")) + return AST_DEVICE_INUSE; + else if (!strcasecmp(val, "BUSY")) + return AST_DEVICE_BUSY; + else if (!strcasecmp(val, "INVALID")) + return AST_DEVICE_INVALID; + else if (!strcasecmp(val, "UNAVAILABLE")) + return AST_DEVICE_UNAVAILABLE; + else if (!strcasecmp(val, "RINGING")) + return AST_DEVICE_RINGING; + else if (!strcasecmp(val, "RINGINUSE")) + return AST_DEVICE_RINGINUSE; + else if (!strcasecmp(val, "ONHOLD")) + return AST_DEVICE_ONHOLD; + + return AST_DEVICE_UNKNOWN; +} + +static int devstate_read(struct ast_channel *chan, char *cmd, char *data, + char *buf, size_t len) +{ + ast_copy_string(buf, ast_devstate_str(ast_device_state(data)), len); + + return 0; +} + +static int devstate_write(struct ast_channel *chan, char *function, + char *data, const char *value) +{ + size_t len = strlen("Custom:"); + + if (strncasecmp(data, "Custom:", len)) { + ast_log(LOG_WARNING, "The DEVSTATE function can only be used to set 'Custom:' device state!\n"); + return -1; + } + data += len; + if (ast_strlen_zero(data)) { + ast_log(LOG_WARNING, "DEVSTATE function called with no custom device name!\n"); + return -1; + } + + ast_db_put(astdb_family, data, (char *) value); + + ast_device_state_changed("Custom:%s", data); + + return 0; +} + +static int custom_devstate_callback(const char *data) +{ + char buf[256] = ""; + + ast_db_get(astdb_family, data, buf, sizeof(buf)); + + return ast_devstate_val(buf); +} + +static int cli_funcdevstate_list(int fd, int argc, char *argv[]) +{ + struct ast_db_entry *db_entry, *db_tree; + + if (argc != 2) + return RESULT_SHOWUSAGE; + + ast_cli(fd, "\n" + "---------------------------------------------------------------------\n" + "--- Custom Device States --------------------------------------------\n" + "---------------------------------------------------------------------\n" + "---\n"); + + db_entry = db_tree = ast_db_gettree(astdb_family, NULL); + for (; db_entry; db_entry = db_entry->next) { + const char *dev_name = strrchr(db_entry->key, '/') + 1; + if (dev_name <= (const char *) 1) + continue; + ast_cli(fd, "--- name: 'custom:%s' state: '%s'\n" + "---\n", dev_name, db_entry->data); + } + ast_db_freetree(db_tree); + db_tree = NULL; + + ast_cli(fd, + "---------------------------------------------------------------------\n" + "---------------------------------------------------------------------\n" + "\n"); + + return RESULT_SUCCESS; +} + +static struct ast_cli_entry cli_funcdevstate[] = { + { { "funcdevstate", "list", }, cli_funcdevstate_list, NULL, NULL }, +}; + +static struct ast_custom_function devstate_function = { + .name = "DEVSTATE", + .synopsis = "Get or Set a device state", + .syntax = "DEVSTATE(device)", + .desc = + " The DEVSTATE function can be used to retrieve the device state from any\n" + "device state provider. For example:\n" + " NoOp(SIP/mypeer has state ${DEVSTATE(SIP/mypeer)})\n" + " NoOp(Conference number 1234 has state ${DEVSTATE(MeetMe:1234)})\n" + "\n" + " The DEVSTATE function can also be used to set custom device state from\n" + "the dialplan. The \"Custom:\" prefix must be used. For example:\n" + " Set(DEVSTATE(Custom:lamp1)=BUSY)\n" + " Set(DEVSTATE(Custom:lamp2)=NOT_INUSE)\n" + "You can subscribe to the status of a custom device state using a hint in\n" + "the dialplan:\n" + " exten => 1234,hint,Custom:lamp1\n" + "\n" + " The possible values for both uses of this function are:\n" + "UNKNOWN | NOT_INUSE | INUSE | BUSY | INVALID | UNAVAILABLE | RINGING\n" + "RINGINUSE | ONHOLD\n", + .read = devstate_read, + .write = devstate_write, +}; + +static int unload_module(void) +{ + int res = 0; + + res |= ast_custom_function_unregister(&devstate_function); + ast_devstate_prov_del("Custom"); + ast_cli_unregister_multiple(cli_funcdevstate, ARRAY_LEN(cli_funcdevstate)); + + return res; +} + +static int load_module(void) +{ + int res = 0; + + res |= ast_custom_function_register(&devstate_function); + res |= ast_devstate_prov_add("Custom", custom_devstate_callback); + ast_cli_register_multiple(cli_funcdevstate, ARRAY_LEN(cli_funcdevstate)); + + return res; +} + +AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Gets or sets a device state in the dialplan");