51391e6b09
In this commit: - move the ast_register/unregister_app functions to module.h to avoid the need to include pbx.h for the simpler apps; - move the ast_group structure to channel.h to remove the dependency of app.h on linkedlists.h Note, this is a long process that I am doing in small steps. The main difficulty is that now for each subsystem we have a single header (e.g. channel.h) included by the subsystem provider (usually one file, e.g. channel.c) and by its clients (dozens of them, e.g. we have some 70+ apps and 30+ functions). This requires the clients to include all the extra headers required by the provider (eg. lock.h, linkedlists.h, definitions of substructures...) even though many of the clients would be just happy with opaque struct declarations and function prototypes. The long term plan is to eventually rectify this structure so that the compilation can become faster, and also APIs are more stable. git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@89522 65c4cc65-6c06-0410-ace0-fbb531ad65f3
232 lines
6.6 KiB
C
232 lines
6.6 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2005, Digium, Inc.
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*
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* Mark Spencer <markster@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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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 Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file
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*
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* \brief Trivial application to read a variable
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*
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* \author Mark Spencer <markster@digium.com>
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*
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* \ingroup applications
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*/
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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#include "asterisk/file.h"
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#include "asterisk/pbx.h"
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#include "asterisk/channel.h"
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#include "asterisk/app.h"
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#include "asterisk/module.h"
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#include "asterisk/indications.h"
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enum {
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OPT_SKIP = (1 << 0),
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OPT_INDICATION = (1 << 1),
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OPT_NOANSWER = (1 << 2),
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} read_option_flags;
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AST_APP_OPTIONS(read_app_options, {
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AST_APP_OPTION('s', OPT_SKIP),
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AST_APP_OPTION('i', OPT_INDICATION),
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AST_APP_OPTION('n', OPT_NOANSWER),
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});
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static char *app = "Read";
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static char *synopsis = "Read a variable";
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static char *descrip =
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" Read(variable[,filename[&filename2...]][,maxdigits][,option][,attempts][,timeout])\n\n"
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"Reads a #-terminated string of digits a certain number of times from the\n"
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"user in to the given variable.\n"
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" filename -- file(s) to play before reading digits or tone with option i\n"
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" maxdigits -- maximum acceptable number of digits. Stops reading after\n"
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" maxdigits have been entered (without requiring the user to\n"
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" press the '#' key).\n"
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" Defaults to 0 - no limit - wait for the user press the '#' key.\n"
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" Any value below 0 means the same. Max accepted value is 255.\n"
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" option -- options are 's' , 'i', 'n'\n"
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" 's' to return immediately if the line is not up,\n"
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" 'i' to play filename as an indication tone from your indications.conf\n"
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" 'n' to read digits even if the line is not up.\n"
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" attempts -- if greater than 1, that many attempts will be made in the \n"
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" event no data is entered.\n"
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" timeout -- The number of seconds to wait for a digit response. If greater\n"
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" than 0, that value will override the default timeout. Can be floating point.\n"
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"This application sets the following channel variable upon completion:\n"
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" READSTATUS - This is the status of the read operation.\n"
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" Possible values are:\n"
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" OK | ERROR | HANGUP | INTERRUPTED | SKIPPED | TIMEOUT\n";
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#define ast_next_data(instr,ptr,delim) if((ptr=strchr(instr,delim))) { *(ptr) = '\0' ; ptr++;}
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static int read_exec(struct ast_channel *chan, void *data)
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{
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int res = 0;
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char tmp[256] = "";
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int maxdigits = 255;
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int tries = 1, to = 0, x = 0;
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double tosec;
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char *argcopy = NULL;
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struct ind_tone_zone_sound *ts = NULL;
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struct ast_flags flags = {0};
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const char *status = "ERROR";
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AST_DECLARE_APP_ARGS(arglist,
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AST_APP_ARG(variable);
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AST_APP_ARG(filename);
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AST_APP_ARG(maxdigits);
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AST_APP_ARG(options);
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AST_APP_ARG(attempts);
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AST_APP_ARG(timeout);
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);
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pbx_builtin_setvar_helper(chan, "READSTATUS", status);
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if (ast_strlen_zero(data)) {
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ast_log(LOG_WARNING, "Read requires an argument (variable)\n");
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return 0;
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}
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argcopy = ast_strdupa(data);
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AST_STANDARD_APP_ARGS(arglist, argcopy);
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if (!ast_strlen_zero(arglist.options)) {
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ast_app_parse_options(read_app_options, &flags, NULL, arglist.options);
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}
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if (!ast_strlen_zero(arglist.attempts)) {
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tries = atoi(arglist.attempts);
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if (tries <= 0)
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tries = 1;
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}
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if (!ast_strlen_zero(arglist.timeout)) {
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tosec = atof(arglist.timeout);
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if (tosec <= 0)
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to = 0;
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else
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to = tosec * 1000.0;
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}
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if (ast_strlen_zero(arglist.filename)) {
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arglist.filename = NULL;
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}
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if (!ast_strlen_zero(arglist.maxdigits)) {
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maxdigits = atoi(arglist.maxdigits);
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if ((maxdigits < 1) || (maxdigits > 255)) {
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maxdigits = 255;
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} else
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ast_verb(3, "Accepting a maximum of %d digits.\n", maxdigits);
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}
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if (ast_strlen_zero(arglist.variable)) {
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ast_log(LOG_WARNING, "Invalid! Usage: Read(variable[,filename][,maxdigits][,option][,attempts][,timeout])\n\n");
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return 0;
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}
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if (ast_test_flag(&flags, OPT_INDICATION)) {
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if (! ast_strlen_zero(arglist.filename)) {
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ts = ast_get_indication_tone(chan->zone, arglist.filename);
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}
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}
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if (chan->_state != AST_STATE_UP) {
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if (ast_test_flag(&flags, OPT_SKIP)) {
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/* At the user's option, skip if the line is not up */
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pbx_builtin_setvar_helper(chan, arglist.variable, "");
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pbx_builtin_setvar_helper(chan, "READSTATUS", "SKIPPED");
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return 0;
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} else if (!ast_test_flag(&flags, OPT_NOANSWER)) {
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/* Otherwise answer unless we're supposed to read while on-hook */
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res = ast_answer(chan);
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}
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}
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if (!res) {
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while (tries && !res) {
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ast_stopstream(chan);
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if (ts && ts->data[0]) {
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if (!to)
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to = chan->pbx ? chan->pbx->rtimeout * 1000 : 6000;
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res = ast_playtones_start(chan, 0, ts->data, 0);
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for (x = 0; x < maxdigits; ) {
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res = ast_waitfordigit(chan, to);
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ast_playtones_stop(chan);
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if (res < 1) {
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if (res == 0)
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status = "TIMEOUT";
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tmp[x]='\0';
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break;
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}
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tmp[x++] = res;
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if (tmp[x-1] == '#') {
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tmp[x-1] = '\0';
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status = "OK";
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break;
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}
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if (x >= maxdigits) {
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status = "OK";
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}
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}
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} else {
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res = ast_app_getdata(chan, arglist.filename, tmp, maxdigits, to);
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if (res == 0)
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status = "OK";
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else if (res == 1)
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status = "TIMEOUT";
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else if (res == 2)
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status = "INTERRUPTED";
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}
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if (res > -1) {
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pbx_builtin_setvar_helper(chan, arglist.variable, tmp);
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if (!ast_strlen_zero(tmp)) {
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ast_verb(3, "User entered '%s'\n", tmp);
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tries = 0;
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} else {
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tries--;
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if (tries)
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ast_verb(3, "User entered nothing, %d chance%s left\n", tries, (tries != 1) ? "s" : "");
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else
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ast_verb(3, "User entered nothing.\n");
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}
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res = 0;
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} else {
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pbx_builtin_setvar_helper(chan, arglist.variable, tmp);
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ast_verb(3, "User disconnected\n");
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}
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}
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}
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if (ast_check_hangup(chan))
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status = "HANGUP";
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pbx_builtin_setvar_helper(chan, "READSTATUS", status);
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return 0;
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}
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static int unload_module(void)
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{
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return ast_unregister_application(app);
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}
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static int load_module(void)
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{
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return ast_register_application(app, read_exec, synopsis, descrip);
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}
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AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Read Variable Application");
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