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/*
* Asterisk -- A telephony toolkit for Linux.
*
* Trivial application to read a variable
*
* Copyright (C) 2003, Digium
*
* Mark Spencer <markster@digium.com>
*
* This program is free software, distributed under the terms of
* the GNU General Public License
*/
#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/translate.h>
#include <asterisk/options.h>
#include <asterisk/utils.h>
#include <string.h>
#include <stdlib.h>
static char *tdesc = "Read Variable Application";
static char *app = "Read";
static char *synopsis = "Read a variable";
static char *descrip =
" Read(variable[|filename][|maxdigits][|option][|attempts][|timeout])\n\n"
"Reads a #-terminated string of digits a certain number of times from the\n"
"user in to the given variable.\n"
" filename -- file to play before reading digits.\n"
" maxdigits -- maximum acceptable number of digits. Stops reading after\n"
" maxdigits have been entered (without requiring the user to\n"
" press the '#' key).\n"
" Defaults to 0 - no limit - wait for the user press the '#' key.\n"
" Any value below 0 means the same. Max accepted value is 255.\n"
" option -- may be 'skip' to return immediately if the line is not up,\n"
" or 'noanswer' to read digits even if the line is not up.\n"
" attempts -- if greater than 1, that many attempts will be made in the \n"
" event no data is entered.\n"
" timeout -- if greater than 0, that value will override the default timeout.\n\n"
"Returns -1 on hangup or error and 0 otherwise.\n";
STANDARD_LOCAL_USER;
LOCAL_USER_DECL;
#define ast_next_data(instr,ptr,delim) if((ptr=strchr(instr,delim))) { *(ptr) = '\0' ; ptr++;}
static int read_exec(struct ast_channel *chan, void *data)
{
int res = 0;
struct localuser *u;
char tmp[256];
char *timeout = NULL;
char *varname = NULL;
char *filename = NULL;
char *loops;
char *maxdigitstr=NULL;
char *options=NULL;
int option_skip = 0;
int option_noanswer = 0;
int maxdigits=255;
int tries = 1;
int to = 0;
int x = 0;
char *argcopy = NULL;
char *args[8];
if (data)
argcopy = ast_strdupa((char *)data);
if (ast_separate_app_args(argcopy, '|', args, sizeof(args) / sizeof(args[0])) < 1) {
ast_log(LOG_WARNING, "Cannot Parse Arguements.\n");
return -1;
}
varname = args[x++];
filename = args[x++];
maxdigitstr = args[x++];
options = args[x++];
loops = args[x++];
if (options) {
if (!strcasecmp(options, "skip"))
option_skip = 1;
else if (!strcasecmp(options, "noanswer"))
option_noanswer = 1;
else {
if (strchr(options, 's'))
option_skip = 1;
if (strchr(options, 'n'))
option_noanswer = 1;
}
}
if(loops) {
tries = atoi(loops);
if(tries <= 0)
tries = 1;
}
if(timeout) {
to = atoi(timeout);
if(to <= 0)
to = 0;
}
if (!(filename) || ast_strlen_zero(filename))
filename = NULL;
if (maxdigitstr) {
maxdigits = atoi(maxdigitstr);
if ((maxdigits<1) || (maxdigits>255)) {
maxdigits = 255;
} else if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "Accepting a maximum of %i digits.\n", maxdigits);
}
if (!(varname) || ast_strlen_zero(varname)) {
ast_log(LOG_WARNING, "Invalid! Usage: Read(variable[|filename][|maxdigits][|option][|attempts][|timeout])\n\n");
return -1;
}
LOCAL_USER_ADD(u);
if (chan->_state != AST_STATE_UP) {
if (option_skip) {
/* At the user's option, skip if the line is not up */
pbx_builtin_setvar_helper(chan, varname, "\0");
LOCAL_USER_REMOVE(u);
return 0;
} else if (!option_noanswer) {
/* Otherwise answer unless we're supposed to read while on-hook */
res = ast_answer(chan);
}
}
if (!res) {
while(tries && !res) {
ast_stopstream(chan);
res = ast_app_getdata(chan, filename, tmp, maxdigits, 0);
if (res > -1) {
pbx_builtin_setvar_helper(chan, varname, tmp);
if (!ast_strlen_zero(tmp)) {
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "User entered '%s'\n", tmp);
tries = 0;
} else {
tries--;
if (option_verbose > 2) {
if (tries)
ast_verbose(VERBOSE_PREFIX_3 "User entered nothing, %d chance(s) left\n", tries);
else
ast_verbose(VERBOSE_PREFIX_3 "User entered nothing.\n");
}
}
res = 0;
} else {
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "User disconnected\n");
}
}
}
LOCAL_USER_REMOVE(u);
return res;
}
int unload_module(void)
{
STANDARD_HANGUP_LOCALUSERS;
return ast_unregister_application(app);
}
int load_module(void)
{
return ast_register_application(app, read_exec, synopsis, descrip);
}
char *description(void)
{
return tdesc;
}
int usecount(void)
{
int res;
STANDARD_USECOUNT(res);
return res;
}
char *key()
{
return ASTERISK_GPL_KEY;
}
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