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00027 #include "asterisk.h"
00028
00029 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 281722 $")
00030
00031 #include "asterisk/file.h"
00032 #include "asterisk/pbx.h"
00033 #include "asterisk/app.h"
00034 #include "asterisk/module.h"
00035 #include "asterisk/indications.h"
00036 #include "asterisk/channel.h"
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00113
00114 enum {
00115 OPT_SKIP = (1 << 0),
00116 OPT_INDICATION = (1 << 1),
00117 OPT_NOANSWER = (1 << 2),
00118 } readexten_option_flags;
00119
00120 AST_APP_OPTIONS(readexten_app_options, {
00121 AST_APP_OPTION('s', OPT_SKIP),
00122 AST_APP_OPTION('i', OPT_INDICATION),
00123 AST_APP_OPTION('n', OPT_NOANSWER),
00124 });
00125
00126 static char *app = "ReadExten";
00127
00128 static int readexten_exec(struct ast_channel *chan, void *data)
00129 {
00130 int res = 0;
00131 char exten[256] = "";
00132 int maxdigits = sizeof(exten) - 1;
00133 int timeout = 0, digit_timeout = 0, x = 0;
00134 char *argcopy = NULL, *status = "";
00135 struct ast_tone_zone_sound *ts = NULL;
00136 struct ast_flags flags = {0};
00137
00138 AST_DECLARE_APP_ARGS(arglist,
00139 AST_APP_ARG(variable);
00140 AST_APP_ARG(filename);
00141 AST_APP_ARG(context);
00142 AST_APP_ARG(options);
00143 AST_APP_ARG(timeout);
00144 );
00145
00146 if (ast_strlen_zero(data)) {
00147 ast_log(LOG_WARNING, "ReadExten requires at least one argument\n");
00148 pbx_builtin_setvar_helper(chan, "READEXTENSTATUS", "ERROR");
00149 return 0;
00150 }
00151
00152 argcopy = ast_strdupa(data);
00153 AST_STANDARD_APP_ARGS(arglist, argcopy);
00154
00155 if (ast_strlen_zero(arglist.variable)) {
00156 ast_log(LOG_WARNING, "Usage: ReadExten(variable[,filename[,context[,options[,timeout]]]])\n");
00157 pbx_builtin_setvar_helper(chan, "READEXTENSTATUS", "ERROR");
00158 return 0;
00159 }
00160
00161 if (ast_strlen_zero(arglist.filename))
00162 arglist.filename = NULL;
00163
00164 if (ast_strlen_zero(arglist.context))
00165 arglist.context = chan->context;
00166
00167 if (!ast_strlen_zero(arglist.options))
00168 ast_app_parse_options(readexten_app_options, &flags, NULL, arglist.options);
00169
00170 if (!ast_strlen_zero(arglist.timeout)) {
00171 timeout = atoi(arglist.timeout);
00172 if (timeout > 0)
00173 timeout *= 1000;
00174 }
00175
00176 if (timeout <= 0)
00177 timeout = chan->pbx ? chan->pbx->rtimeoutms : 10000;
00178
00179 if (digit_timeout <= 0)
00180 digit_timeout = chan->pbx ? chan->pbx->dtimeoutms : 5000;
00181
00182 if (ast_test_flag(&flags, OPT_INDICATION) && !ast_strlen_zero(arglist.filename)) {
00183 ts = ast_get_indication_tone(chan->zone, arglist.filename);
00184 }
00185
00186 do {
00187 if (chan->_state != AST_STATE_UP) {
00188 if (ast_test_flag(&flags, OPT_SKIP)) {
00189
00190 pbx_builtin_setvar_helper(chan, arglist.variable, "");
00191 status = "SKIP";
00192 break;
00193 } else if (!ast_test_flag(&flags, OPT_NOANSWER)) {
00194
00195 res = ast_answer(chan);
00196 }
00197 }
00198
00199 if (res < 0) {
00200 status = "HANGUP";
00201 break;
00202 }
00203
00204 ast_playtones_stop(chan);
00205 ast_stopstream(chan);
00206
00207 if (ts && ts->data[0])
00208 res = ast_playtones_start(chan, 0, ts->data, 0);
00209 else if (arglist.filename)
00210 res = ast_streamfile(chan, arglist.filename, chan->language);
00211
00212 for (x = 0; x < maxdigits; x++) {
00213 ast_debug(3, "extension so far: '%s', timeout: %d\n", exten, timeout);
00214 res = ast_waitfordigit(chan, timeout);
00215
00216 ast_playtones_stop(chan);
00217 ast_stopstream(chan);
00218 timeout = digit_timeout;
00219
00220 if (res < 1) {
00221 if (ast_check_hangup(chan)) {
00222 status = "HANGUP";
00223 } else if (x == 0) {
00224 pbx_builtin_setvar_helper(chan, arglist.variable, "t");
00225 status = "TIMEOUT";
00226 }
00227 break;
00228 }
00229
00230 exten[x] = res;
00231 if (!ast_matchmore_extension(chan, arglist.context, exten, 1 , chan->cid.cid_num)) {
00232 if (!ast_exists_extension(chan, arglist.context, exten, 1, chan->cid.cid_num) && res == '#') {
00233 exten[x] = '\0';
00234 }
00235 break;
00236 }
00237 }
00238
00239 if (!ast_strlen_zero(status))
00240 break;
00241
00242 if (ast_exists_extension(chan, arglist.context, exten, 1, chan->cid.cid_num)) {
00243 ast_debug(3, "User entered valid extension '%s'\n", exten);
00244 pbx_builtin_setvar_helper(chan, arglist.variable, exten);
00245 status = "OK";
00246 } else {
00247 ast_debug(3, "User dialed invalid extension '%s' in context '%s' on %s\n", exten, arglist.context, chan->name);
00248 pbx_builtin_setvar_helper(chan, arglist.variable, "i");
00249 pbx_builtin_setvar_helper(chan, "INVALID_EXTEN", exten);
00250 status = "INVALID";
00251 }
00252 } while (0);
00253
00254 if (ts) {
00255 ts = ast_tone_zone_sound_unref(ts);
00256 }
00257
00258 pbx_builtin_setvar_helper(chan, "READEXTENSTATUS", status);
00259
00260 return status[0] == 'H' ? -1 : 0;
00261 }
00262
00263 static int acf_isexten_exec(struct ast_channel *chan, const char *cmd, char *parse, char *buffer, size_t buflen)
00264 {
00265 int priority_int;
00266 AST_DECLARE_APP_ARGS(args,
00267 AST_APP_ARG(context);
00268 AST_APP_ARG(extension);
00269 AST_APP_ARG(priority);
00270 );
00271
00272 AST_STANDARD_APP_ARGS(args, parse);
00273
00274 if (ast_strlen_zero(args.context))
00275 args.context = chan->context;
00276
00277 if (ast_strlen_zero(args.extension)) {
00278 ast_log(LOG_WARNING, "Syntax: VALID_EXTEN([<context>],<extension>[,<priority>]) - missing argument <extension>!\n");
00279 return -1;
00280 }
00281
00282 if (ast_strlen_zero(args.priority))
00283 priority_int = 1;
00284 else
00285 priority_int = atoi(args.priority);
00286
00287 if (ast_exists_extension(chan, args.context, args.extension, priority_int, chan->cid.cid_num))
00288 ast_copy_string(buffer, "1", buflen);
00289 else
00290 ast_copy_string(buffer, "0", buflen);
00291
00292 return 0;
00293 }
00294
00295 static struct ast_custom_function acf_isexten = {
00296 .name = "VALID_EXTEN",
00297 .read = acf_isexten_exec,
00298 };
00299
00300 static int unload_module(void)
00301 {
00302 int res = ast_unregister_application(app);
00303 res |= ast_custom_function_unregister(&acf_isexten);
00304
00305 return res;
00306 }
00307
00308 static int load_module(void)
00309 {
00310 int res = ast_register_application_xml(app, readexten_exec);
00311 res |= ast_custom_function_register(&acf_isexten);
00312 return res;
00313 }
00314
00315 AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Read and evaluate extension validity");