diff --git a/apps/app_readexten.c b/apps/app_readexten.c
new file mode 100644
index 0000000000000000000000000000000000000000..9a8e7533a59bdd0fc41389119d87366639e5ef5e
--- /dev/null
+++ b/apps/app_readexten.c
@@ -0,0 +1,266 @@
+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 2007 Dave Chappell
+ *
+ * David Chappell <David.Chappell@trincoll.edu>
+ *
+ * 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 Trivial application to read an extension into a variable
+ *
+ * \author David Chappell <David.Chappell@trincoll.edu>
+ *
+ * \ingroup applications
+ */
+
+#include "asterisk.h"
+
+ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "asterisk/lock.h"
+#include "asterisk/file.h"
+#include "asterisk/logger.h"
+#include "asterisk/channel.h"
+#include "asterisk/pbx.h"
+#include "asterisk/app.h"
+#include "asterisk/module.h"
+#include "asterisk/options.h"
+#include "asterisk/utils.h"
+#include "asterisk/indications.h"
+
+enum {
+ OPT_SKIP = (1 << 0),
+ OPT_INDICATION = (1 << 1),
+ OPT_NOANSWER = (1 << 2),
+} readexten_option_flags;
+
+AST_APP_OPTIONS(readexten_app_options, {
+ AST_APP_OPTION('s', OPT_SKIP),
+ AST_APP_OPTION('i', OPT_INDICATION),
+ AST_APP_OPTION('n', OPT_NOANSWER),
+});
+
+static char *app = "ReadExten";
+
+static char *synopsis = "Read an extension into a variable";
+
+static char *descrip =
+" ReadExten(<variable>[,[<filename>][,[<context>][,[<option>][,<timeout>]]]])\n\n"
+"Reads a #-terminated string of digits from the user into the given variable.\n"
+" filename file to play before reading digits or tone with option i\n"
+" context context in which to match extensions\n"
+" option options are:\n"
+" s - Return immediately if the line is not up,\n"
+" i - Play filename as an indication tone from your\n"
+" indications.conf\n"
+" n - Read digits even if the line is not up.\n"
+" timeout An integer number of seconds to wait for a digit response. If\n"
+" greater than 0, that value will override the default timeout.\n\n"
+"ReadExten will set READEXTENSTATUS on exit with one of the following statuses:\n"
+" OK A valid extension exists in ${variable}\n"
+" TIMEOUT No extension was entered in the specified time\n"
+" INVALID An invalid extension, ${INVALID_EXTEN}, was entered\n"
+" SKIP Line was not up and the option 's' was specified\n"
+" ERROR Invalid arguments were passed\n";
+
+
+static int readexten_exec(struct ast_channel *chan, void *data)
+{
+ int res = 0;
+ char exten[256] = "";
+ int maxdigits = sizeof(exten) - 1;
+ int timeout = 0, digit_timeout = 0, x = 0;
+ char *argcopy = NULL, *status = "";
+ struct ind_tone_zone_sound *ts = NULL;
+ struct ast_flags flags = {0};
+
+ AST_DECLARE_APP_ARGS(arglist,
+ AST_APP_ARG(variable);
+ AST_APP_ARG(filename);
+ AST_APP_ARG(context);
+ AST_APP_ARG(options);
+ AST_APP_ARG(timeout);
+ );
+
+ if (ast_strlen_zero(data)) {
+ ast_log(LOG_WARNING, "ReadExten requires at least one argument\n");
+ pbx_builtin_setvar_helper(chan, "READEXTENSTATUS", "ERROR");
+ return 0;
+ }
+
+ argcopy = ast_strdupa(data);
+ AST_STANDARD_APP_ARGS(arglist, argcopy);
+
+ if (ast_strlen_zero(arglist.variable)) {
+ ast_log(LOG_WARNING, "Invalid! Usage: ReadExten(variable[|filename][|context][|options][|timeout])\n\n");
+ pbx_builtin_setvar_helper(chan, "READEXTENSTATUS", "ERROR");
+ return 0;
+ }
+
+ if (ast_strlen_zero(arglist.filename))
+ arglist.filename = NULL;
+
+ if (ast_strlen_zero(arglist.context))
+ arglist.context = chan->context;
+
+ if (!ast_strlen_zero(arglist.options))
+ ast_app_parse_options(readexten_app_options, &flags, NULL, arglist.options);
+
+ if (!ast_strlen_zero(arglist.timeout)) {
+ timeout = atoi(arglist.timeout);
+ if (timeout > 0)
+ timeout *= 1000;
+ }
+
+ if (timeout <= 0)
+ timeout = chan->pbx ? chan->pbx->rtimeout * 1000 : 10000;
+
+ if (digit_timeout <= 0)
+ digit_timeout = chan->pbx ? chan->pbx->dtimeout * 1000 : 5000;
+
+ if (ast_test_flag(&flags, OPT_INDICATION) && !ast_strlen_zero(arglist.filename))
+ ts = ast_get_indication_tone(chan->zone, arglist.filename);
+
+ do {
+ if (chan->_state != AST_STATE_UP) {
+ if (ast_test_flag(&flags, OPT_SKIP)) {
+ /* At the user's option, skip if the line is not up */
+ pbx_builtin_setvar_helper(chan, arglist.variable, "");
+ status = "SKIP";
+ break;
+ } else if (!ast_test_flag(&flags, OPT_NOANSWER)) {
+ /* Otherwise answer unless we're supposed to read while on-hook */
+ res = ast_answer(chan);
+ }
+ }
+
+ if (res < 0) {
+ status = "HANGUP";
+ break;
+ }
+
+ ast_playtones_stop(chan);
+ ast_stopstream(chan);
+
+ if (ts && ts->data[0])
+ res = ast_playtones_start(chan, 0, ts->data, 0);
+ else if (arglist.filename)
+ res = ast_streamfile(chan, arglist.filename, chan->language);
+
+ for (x = 0; x < maxdigits; x++) {
+ ast_debug(3, "extension so far: '%s', timeout: %d\n", exten, timeout);
+ res = ast_waitfordigit(chan, timeout);
+
+ ast_playtones_stop(chan);
+ ast_stopstream(chan);
+ timeout = digit_timeout;
+
+ if (res < 1) { /* timeout expired or hangup */
+ if (ast_check_hangup(chan))
+ status = "HANGUP";
+ else
+ status = "TIMEOUT";
+ break;
+ } else if (res == '#') {
+ break;
+ }
+
+ exten[x] = res;
+ if (!ast_matchmore_extension(chan, arglist.context, exten, 1 /* priority */, chan->cid.cid_num)) {
+ break;
+ }
+ }
+
+ if (!ast_strlen_zero(status))
+ break;
+
+ if (ast_exists_extension(chan, arglist.context, exten, 1, chan->cid.cid_num)) {
+ ast_debug(3, "User entered valid extension '%s'\n", exten);
+ pbx_builtin_setvar_helper(chan, arglist.variable, exten);
+ status = "OK";
+ } else {
+ ast_debug(3, "User dialed invalid extension '%s' in context '%s' on %s\n", exten, arglist.context, chan->name);
+ pbx_builtin_setvar_helper(chan, "INVALID_EXTEN", exten);
+ status = "INVALID";
+ }
+ } while (0);
+
+ pbx_builtin_setvar_helper(chan, "READEXTENSTATUS", status);
+
+ return status[0] == 'H' ? -1 : 0;
+}
+
+static int acf_isexten_exec(struct ast_channel *chan, const char *cmd, char *parse, char *buffer, size_t buflen)
+{
+ int priority_int;
+ AST_DECLARE_APP_ARGS(args,
+ AST_APP_ARG(context);
+ AST_APP_ARG(extension);
+ AST_APP_ARG(priority);
+ );
+
+ AST_STANDARD_APP_ARGS(args, parse);
+
+ if (ast_strlen_zero(args.context))
+ args.context = chan->context;
+
+ if (ast_strlen_zero(args.extension)) {
+ ast_log(LOG_WARNING, "Syntax: VALID_EXTEN([<context>],<extension>[,<priority>]) - missing argument <extension>!\n");
+ return -1;
+ }
+
+ if (ast_strlen_zero(args.priority))
+ priority_int = 1;
+ else
+ priority_int = atoi(args.priority);
+
+ if (ast_exists_extension(chan, args.context, args.extension, priority_int, chan->cid.cid_num))
+ ast_copy_string(buffer, "1", buflen);
+ else
+ ast_copy_string(buffer, "0", buflen);
+
+ return 0;
+}
+
+static struct ast_custom_function acf_isexten = {
+ .name = "VALID_EXTEN",
+ .synopsis = "Determine whether an extension exists or not",
+ .syntax = "VALID_EXTEN([<context>],<extension>[,<priority>])",
+ .desc =
+"Returns a true value if the indicated context, extension, and priority exist.\n"
+"Context defaults to the current context, priority defaults to 1.\n",
+ .read = acf_isexten_exec,
+};
+
+static int unload_module(void)
+{
+ int res = ast_unregister_application(app);
+ res |= ast_custom_function_unregister(&acf_isexten);
+
+ return res;
+}
+
+static int load_module(void)
+{
+ int res = ast_register_application(app, readexten_exec, synopsis, descrip);
+ res |= ast_custom_function_register(&acf_isexten);
+ return res;
+}
+
+AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Read and evaluate extension validity");