apps/app_agi.c

   1 /*
   2  * Asterisk -- A telephony toolkit for Linux.
   3  *
   4  * Asterisk Gateway Interface
   5  *
   6  * Copyright (C) 1999, Mark Spencer
   7  *
   8  * Mark Spencer <markster@linux-support.net>
   9  *
  10  * This program is free software, distributed under the terms of
  11  * the GNU General Public License
  12  */
  13
  14 #include <sys/types.h>
  15 #include <asterisk/file.h>
  16 #include <asterisk/logger.h>
  17 #include <asterisk/channel.h>
  18 #include <asterisk/pbx.h>
  19 #include <asterisk/module.h>
  20 #include <asterisk/astdb.h>
  21 #include <math.h>
  22 #include <stdlib.h>
  23 #include <unistd.h>
  24 #include <string.h>
  25 #include <stdlib.h>
  26 #include <signal.h>
  27 #include <sys/time.h>
  28 #include <stdio.h>
  29 #include <fcntl.h>
  30 #include <errno.h>
  31 #include <asterisk/cli.h>
  32 #include <asterisk/logger.h>
  33 #include <asterisk/options.h>
  34 #include <asterisk/image.h>
  35 #include <asterisk/say.h>
  36 #include <asterisk/app.h>
  37 #include <asterisk/dsp.h>
  38 #include <asterisk/musiconhold.h>
  39 #include "../asterisk.h"
  40 #include "../astconf.h"
  41
  42 #include <pthread.h>
  43
  44 #define MAX_ARGS 128
  45
  46 /* Recycle some stuff from the CLI interface */
  47 #define fdprintf ast_cli
  48
  49 typedef struct agi_state {
  50         int fd;         /* FD for general output */
  51         int audio;      /* FD for audio output */
  52         int ctrl;       /* FD for input control */
  53 } AGI;
  54
  55 typedef struct agi_command {
  56         /* Null terminated list of the words of the command */
  57         char *cmda[AST_MAX_CMD_LEN];
  58         /* Handler for the command (channel, AGI state, # of arguments, argument list).
  59             Returns RESULT_SHOWUSAGE for improper arguments */
  60         int (*handler)(struct ast_channel *chan, AGI *agi, int argc, char *argv[]);
  61         /* Summary of the command (< 60 characters) */
  62         char *summary;
  63         /* Detailed usage information */
  64         char *usage;
  65 } agi_command;
  66
  67 static char *tdesc = "Asterisk Gateway Interface (AGI)";
  68
  69 static char *app = "AGI";
  70
  71 static char *eapp = "EAGI";
  72
  73 static char *synopsis = "Executes an AGI compliant application";
  74
  75 static char *descrip =
  76 "  [E]AGI(command|args): Executes an Asterisk Gateway Interface compliant\n"
  77 "program on a channel.   AGI allows Asterisk to launch external programs\n"
  78 "written in any language to control a telephony channel, play audio,\n"
  79 "read DTMF digits, etc. by communicating with the AGI protocol on stdin\n"
  80 "and stdout.  Returns -1 on hangup or if application requested hangup, or\n"
  81 "0 on non-hangup exit.  Using 'EAGI' provides enhanced AGI, with audio\n"
  82 "available out of band on file descriptor 3\n";
  83
  84 STANDARD_LOCAL_USER;
  85
  86 LOCAL_USER_DECL;
  87
  88
  89 #define TONE_BLOCK_SIZE 200
  90
  91 static int launch_script(char *script, char *args, int *fds, int *efd, int *opid)
  92 {
  93         char tmp[256];
  94         int pid;
  95         int toast[2];
  96         int fromast[2];
  97         int audio[2];
  98         int x;
  99         int res;
 100         if (script[0] != '/') {
 101                 snprintf(tmp, sizeof(tmp), "%s/%s", (char *)ast_config_AST_AGI_DIR, script);
 102                 script = tmp;
 103         }
 104         if (pipe(toast)) {
 105                 ast_log(LOG_WARNING, "Unable to create toast pipe: %s\n",strerror(errno));
 106                 return -1;
 107         }
 108         if (pipe(fromast)) {
 109                 ast_log(LOG_WARNING, "unable to create fromast pipe: %s\n", strerror(errno));
 110                 close(toast[0]);
 111                 close(toast[1]);
 112                 return -1;
 113         }
 114         if (efd) {
 115                 if (pipe(audio)) {
 116                         ast_log(LOG_WARNING, "unable to create audio pipe: %s\n", strerror(errno));
 117                         close(fromast[0]);
 118                         close(fromast[1]);
 119                         close(toast[0]);
 120                         close(toast[1]);
 121                         return -1;
 122                 }
 123                 res = fcntl(audio[1], F_GETFL);
 124                 if (res > -1)
 125                         res = fcntl(audio[1], F_SETFL, res | O_NONBLOCK);
 126                 if (res < 0) {
 127                         ast_log(LOG_WARNING, "unable to set audio pipe parameters: %s\n", strerror(errno));
 128                         close(fromast[0]);
 129                         close(fromast[1]);
 130                         close(toast[0]);
 131                         close(toast[1]);
 132                         close(audio[0]);
 133                         close(audio[1]);
 134                         return -1;
 135                 }
 136         }
 137         pid = fork();
 138         if (pid < 0) {
 139                 ast_log(LOG_WARNING, "Failed to fork(): %s\n", strerror(errno));
 140                 return -1;
 141         }
 142         if (!pid) {
 143                 /* Redirect stdin and out, provide enhanced audio channel if desired */
 144                 dup2(fromast[0], STDIN_FILENO);
 145                 dup2(toast[1], STDOUT_FILENO);
 146                 if (efd) {
 147                         dup2(audio[0], STDERR_FILENO + 1);
 148                 } else {
 149                         close(STDERR_FILENO + 1);
 150                 }
 151                 /* Close everything but stdin/out/error */
 152                 for (x=STDERR_FILENO + 2;x<1024;x++)
 153                         close(x);
 154                 /* Execute script */
 155                 execl(script, script, args, (char *)NULL);
 156                 /* Can't use ast_log since FD's are closed */
 157                 fprintf(stderr, "Failed to execute '%s': %s\n", script, strerror(errno));
 158                 exit(1);
 159         }
 160         if (option_verbose > 2)
 161                 ast_verbose(VERBOSE_PREFIX_3 "Launched AGI Script %s\n", script);
 162         fds[0] = toast[0];
 163         fds[1] = fromast[1];
 164         if (efd) {
 165                 *efd = audio[1];
 166         }
 167         /* close what we're not using in the parent */
 168         close(toast[1]);
 169         close(fromast[0]);
 170         *opid = pid;
 171         return 0;
 172
 173 }
 174
 175 static void setup_env(struct ast_channel *chan, char *request, int fd, int enhanced)
 176 {
 177         /* Print initial environment, with agi_request always being the first
 178            thing */
 179         fdprintf(fd, "agi_request: %s\n", request);
 180         fdprintf(fd, "agi_channel: %s\n", chan->name);
 181         fdprintf(fd, "agi_language: %s\n", chan->language);
 182         fdprintf(fd, "agi_type: %s\n", chan->type);
 183         fdprintf(fd, "agi_uniqueid: %s\n", chan->uniqueid);
 184
 185         /* ANI/DNIS */
 186         fdprintf(fd, "agi_callerid: %s\n", chan->callerid ? chan->callerid : "unknown");
 187         fdprintf(fd, "agi_dnid: %s\n", chan->dnid ? chan->dnid : "unknown");
 188         fdprintf(fd, "agi_rdnis: %s\n", chan->rdnis ? chan->rdnis : "unknown");
 189
 190         /* Context information */
 191         fdprintf(fd, "agi_context: %s\n", chan->context);
 192         fdprintf(fd, "agi_extension: %s\n", chan->exten);
 193         fdprintf(fd, "agi_priority: %d\n", chan->priority);
 194         fdprintf(fd, "agi_enhanced: %s\n", enhanced ? "1.0" : "0.0");
 195
 196     /* User information */
 197     fdprintf(fd, "agi_accountcode: %s\n", chan->accountcode ? chan->accountcode : "");
 198
 199         /* End with empty return */
 200         fdprintf(fd, "\n");
 201 }
 202
 203 static int handle_answer(struct ast_channel *chan, AGI *agi, int argc, char *argv[])
 204 {
 205         int res;
 206         res = 0;
 207         if (chan->_state != AST_STATE_UP) {
 208                 /* Answer the chan */
 209                 res = ast_answer(chan);
 210         }
 211         fdprintf(agi->fd, "200 result=%d\n", res);
 212         if (res >= 0)
 213                 return RESULT_SUCCESS;
 214         else
 215                 return RESULT_FAILURE;
 216 }
 217
 218 static int handle_waitfordigit(struct ast_channel *chan, AGI *agi, int argc, char *argv[])
 219 {
 220         int res;
 221         int to;
 222         if (argc != 4)
 223                 return RESULT_SHOWUSAGE;
 224         if (sscanf(argv[3], "%i", &to) != 1)
 225                 return RESULT_SHOWUSAGE;
 226         res = ast_waitfordigit_full(chan, to, agi->audio, agi->ctrl);
 227         fdprintf(agi->fd, "200 result=%d\n", res);
 228         if (res >= 0)
 229                 return RESULT_SUCCESS;
 230         else
 231                 return RESULT_FAILURE;
 232 }
 233
 234 static int handle_sendtext(struct ast_channel *chan, AGI *agi, int argc, char *argv[])
 235 {
 236         int res;
 237         if (argc != 3)
 238                 return RESULT_SHOWUSAGE;
 239         /* At the moment, the parser (perhaps broken) returns with
 240            the last argument PLUS the newline at the end of the input
 241            buffer. This probably needs to be fixed, but I wont do that
 242            because other stuff may break as a result. The right way
 243            would probably be to strip off the trailing newline before
 244            parsing, then here, add a newline at the end of the string
 245            before sending it to ast_sendtext --DUDE */
 246         res = ast_sendtext(chan, argv[2]);
 247         fdprintf(agi->fd, "200 result=%d\n", res);
 248         if (res >= 0)
 249                 return RESULT_SUCCESS;
 250         else
 251                 return RESULT_FAILURE;
 252 }
 253
 254 static int handle_recvchar(struct ast_channel *chan, AGI *agi, int argc, char *argv[])
 255 {
 256         int res;
 257         if (argc != 3)
 258                 return RESULT_SHOWUSAGE;
 259         res = ast_recvchar(chan,atoi(argv[2]));
 260         if (res == 0) {
 261                 fdprintf(agi->fd, "200 result=%d (timeout)\n", res);
 262                 return RESULT_SUCCESS;
 263         }
 264         if (res > 0) {
 265                 fdprintf(agi->fd, "200 result=%d\n", res);
 266                 return RESULT_SUCCESS;
 267         }
 268         else {
 269                 fdprintf(agi->fd, "200 result=%d (hangup)\n", res);
 270                 return RESULT_FAILURE;
 271         }
 272 }
 273
 274 static int handle_tddmode(struct ast_channel *chan, AGI *agi, int argc, char *argv[])
 275 {
 276         int res,x;
 277         if (argc != 3)
 278                 return RESULT_SHOWUSAGE;
 279         if (!strncasecmp(argv[2],"on",2)) x = 1; else x = 0;
 280         if (!strncasecmp(argv[2],"mate",4)) x = 2;
 281         if (!strncasecmp(argv[2],"tdd",3)) x = 1;
 282         res = ast_channel_setoption(chan,AST_OPTION_TDD,&x,sizeof(char),0);
 283         fdprintf(agi->fd, "200 result=%d\n", res);
 284         if (res >= 0)
 285                 return RESULT_SUCCESS;
 286         else
 287                 return RESULT_FAILURE;
 288 }
 289
 290 static int handle_sendimage(struct ast_channel *chan, AGI *agi, int argc, char *argv[])
 291 {
 292         int res;
 293         if (argc != 3)
 294                 return RESULT_SHOWUSAGE;
 295         res = ast_send_image(chan, argv[2]);
 296         if (!ast_check_hangup(chan))
 297                 res = 0;
 298         fdprintf(agi->fd, "200 result=%d\n", res);
 299         if (res >= 0)
 300                 return RESULT_SUCCESS;
 301         else
 302                 return RESULT_FAILURE;
 303 }
 304
 305 static int handle_streamfile(struct ast_channel *chan, AGI *agi, int argc, char *argv[])
 306 {
 307         int res;
 308         struct ast_filestream *fs;
 309         long sample_offset = 0;
 310         long max_length;
 311
 312         if (argc < 4)
 313                 return RESULT_SHOWUSAGE;
 314         if (argc > 5)
 315                 return RESULT_SHOWUSAGE;
 316         if ((argc > 4) && (sscanf(argv[4], "%ld", &sample_offset) != 1))
 317                 return RESULT_SHOWUSAGE;
 318
 319         fs = ast_openstream(chan, argv[2], chan->language);
 320         if(!fs){
 321                 fdprintf(agi->fd, "200 result=%d endpos=%ld\n", 0, sample_offset);
 322                 ast_log(LOG_WARNING, "Unable to open %s\n", argv[2]);
 323                 return RESULT_FAILURE;
 324         }
 325         ast_seekstream(fs, 0, SEEK_END);
 326         max_length = ast_tellstream(fs);
 327         ast_seekstream(fs, sample_offset, SEEK_SET);
 328         res = ast_applystream(chan, fs);
 329         res = ast_playstream(fs);
 330         if (res) {
 331                 fdprintf(agi->fd, "200 result=%d endpos=%ld\n", res, sample_offset);
 332                 if (res >= 0)
 333                         return RESULT_SHOWUSAGE;
 334                 else
 335                         return RESULT_FAILURE;
 336         }
 337         res = ast_waitstream_full(chan, argv[3], agi->audio, agi->ctrl);
 338         /* this is to check for if ast_waitstream closed the stream, we probably are at
 339          * the end of the stream, return that amount, else check for the amount */
 340         sample_offset = (chan->stream)?ast_tellstream(fs):max_length;
 341         ast_stopstream(chan);
 342         if (res == 1) {
 343                 /* Stop this command, don't print a result line, as there is a new command */
 344                 return RESULT_SUCCESS;
 345         }
 346         fdprintf(agi->fd, "200 result=%d endpos=%ld\n", res, sample_offset);
 347         if (res >= 0)
 348                 return RESULT_SUCCESS;
 349         else
 350                 return RESULT_FAILURE;
 351 }
 352
 353 static int handle_saynumber(struct ast_channel *chan, AGI *agi, int argc, char *argv[])
 354 {
 355         int res;
 356         int num;
 357         if (argc != 4)
 358                 return RESULT_SHOWUSAGE;
 359         if (sscanf(argv[2], "%i", &num) != 1)
 360                 return RESULT_SHOWUSAGE;
 361         res = ast_say_number_full(chan, num, argv[3], chan->language, agi->audio, agi->ctrl);
 362         if (res == 1)
 363                 return RESULT_SUCCESS;
 364         fdprintf(agi->fd, "200 result=%d\n", res);
 365         if (res >= 0)
 366                 return RESULT_SUCCESS;
 367         else
 368                 return RESULT_FAILURE;
 369 }
 370
 371 static int handle_saydigits(struct ast_channel *chan, AGI *agi, int argc, char *argv[])
 372 {
 373         int res;
 374         int num;
 375         if (argc != 4)
 376                 return RESULT_SHOWUSAGE;
 377         if (sscanf(argv[2], "%i", &num) != 1)
 378                 return RESULT_SHOWUSAGE;
 379         res = ast_say_digit_str_full(chan, argv[2], argv[3], chan->language, agi->audio, agi->ctrl);
 380         if (res == 1) /* New command */
 381                 return RESULT_SUCCESS;
 382         fdprintf(agi->fd, "200 result=%d\n", res);
 383         if (res >= 0)
 384                 return RESULT_SUCCESS;
 385         else
 386                 return RESULT_FAILURE;
 387 }
 388
 389 static int handle_getdata(struct ast_channel *chan, AGI *agi, int argc, char *argv[])
 390 {
 391         int res;
 392         char data[1024];
 393         int max;
 394         int timeout;
 395
 396         if (argc < 3)
 397                 return RESULT_SHOWUSAGE;
 398         if (argc >= 4) timeout = atoi(argv[3]); else timeout = 0;
 399         if (argc >= 5) max = atoi(argv[4]); else max = 1024;
 400         res = ast_app_getdata_full(chan, argv[2], data, max, timeout, agi->audio, agi->ctrl);
 401         if (res == 2)                   /* New command */
 402                 return RESULT_SUCCESS;
 403         else if (res == 1)
 404                 fdprintf(agi->fd, "200 result=%s (timeout)\n", data);
 405     else if (res < 0 )
 406         fdprintf(agi->fd, "200 result=-1\n");
 407         else
 408                 fdprintf(agi->fd, "200 result=%s\n", data);
 409         if (res >= 0)
 410                 return RESULT_SUCCESS;
 411         else
 412                 return RESULT_FAILURE;
 413 }
 414
 415 static int handle_setcontext(struct ast_channel *chan, AGI *agi, int argc, char *argv[])
 416 {
 417
 418         if (argc != 3)
 419                 return RESULT_SHOWUSAGE;
 420         strncpy(chan->context, argv[2], sizeof(chan->context)-1);
 421         fdprintf(agi->fd, "200 result=0\n");
 422         return RESULT_SUCCESS;
 423 }
 424
 425 static int handle_setextension(struct ast_channel *chan, AGI *agi, int argc, char **argv)
 426 {
 427         if (argc != 3)
 428                 return RESULT_SHOWUSAGE;
 429         strncpy(chan->exten, argv[2], sizeof(chan->exten)-1);
 430         fdprintf(agi->fd, "200 result=0\n");
 431         return RESULT_SUCCESS;
 432 }
 433
 434 static int handle_setpriority(struct ast_channel *chan, AGI *agi, int argc, char **argv)
 435 {
 436         int pri;
 437         if (argc != 3)
 438                 return RESULT_SHOWUSAGE;
 439         if (sscanf(argv[2], "%i", &pri) != 1)
 440                 return RESULT_SHOWUSAGE;
 441         chan->priority = pri - 1;
 442         fdprintf(agi->fd, "200 result=0\n");
 443         return RESULT_SUCCESS;
 444 }
 445
 446 static int handle_recordfile(struct ast_channel *chan, AGI *agi, int argc, char *argv[])
 447 {
 448         struct ast_filestream *fs;
 449         struct ast_frame *f;
 450         struct timeval tv, start;
 451         long sample_offset = 0;
 452         int res = 0;
 453         int ms;
 454
 455         struct ast_dsp *sildet=NULL;         /* silence detector dsp */
 456         int totalsilence = 0;
 457         int dspsilence = 0;
 458         int silence = 0;                /* amount of silence to allow */
 459         int gotsilence = 0;             /* did we timeout for silence? */
 460         char *silencestr=NULL;
 461         int rfmt=0;
 462
 463
 464         /* XXX EAGI FIXME XXX */
 465
 466         if (argc < 6)
 467                 return RESULT_SHOWUSAGE;
 468         if (sscanf(argv[5], "%i", &ms) != 1)
 469                 return RESULT_SHOWUSAGE;
 470
 471         if (argc > 6)
 472                 silencestr = strchr(argv[6],'s');
 473         if ((argc > 7) && (!silencestr))
 474                 silencestr = strchr(argv[7],'s');
 475         if ((argc > 8) && (!silencestr))
 476                 silencestr = strchr(argv[8],'s');
 477
 478         if (silencestr) {
 479                 if (strlen(silencestr) > 2) {
 480                         if ((silencestr[0] == 's') && (silencestr[1] == '=')) {
 481                                 silencestr++;
 482                                 silencestr++;
 483                                 if (silencestr)
 484                                         silence = atoi(silencestr);
 485                                 if (silence > 0)
 486                                         silence *= 1000;
 487                         }
 488                 }
 489         }
 490
 491         if (silence > 0) {
 492                 rfmt = chan->readformat;
 493                 res = ast_set_read_format(chan, AST_FORMAT_SLINEAR);
 494                 if (res < 0) {
 495                         ast_log(LOG_WARNING, "Unable to set to linear mode, giving up\n");
 496                         return -1;
 497                 }
 498                 sildet = ast_dsp_new();
 499                 if (!sildet) {
 500                         ast_log(LOG_WARNING, "Unable to create silence detector :(\n");
 501                         return -1;
 502                 }
 503                 ast_dsp_set_threshold(sildet, 256);
 504         }
 505
 506         /* backward compatibility, if no offset given, arg[6] would have been
 507          * caught below and taken to be a beep, else if it is a digit then it is a
 508          * offset */
 509         if ((argc >6) && (sscanf(argv[6], "%ld", &sample_offset) != 1) && (!strchr(argv[6], '=')))
 510                 res = ast_streamfile(chan, "beep", chan->language);
 511
 512         if ((argc > 7) && (!strchr(argv[7], '=')))
 513                 res = ast_streamfile(chan, "beep", chan->language);
 514
 515         if (!res)
 516                 res = ast_waitstream(chan, argv[4]);
 517         if (!res) {
 518                 fs = ast_writefile(argv[2], argv[3], NULL, O_CREAT | O_WRONLY, 0, 0644);
 519                 if (!fs) {
 520                         res = -1;
 521                         fdprintf(agi->fd, "200 result=%d (writefile)\n", res);
 522                         return RESULT_FAILURE;
 523                 }
 524
 525                 chan->stream = fs;
 526                 ast_applystream(chan,fs);
 527                 /* really should have checks */
 528                 ast_seekstream(fs, sample_offset, SEEK_SET);
 529                 ast_truncstream(fs);
 530
 531                 gettimeofday(&start, NULL);
 532                 gettimeofday(&tv, NULL);
 533                 while ((ms < 0) || (((tv.tv_sec - start.tv_sec) * 1000 + (tv.tv_usec - start.tv_usec)/1000) < ms)) {
 534                         res = ast_waitfor(chan, -1);
 535                         if (res < 0) {
 536                                 ast_closestream(fs);
 537                                 fdprintf(agi->fd, "200 result=%d (waitfor) endpos=%ld\n", res,sample_offset);
 538                                 return RESULT_FAILURE;
 539                         }
 540                         f = ast_read(chan);
 541                         if (!f) {
 542                                 fdprintf(agi->fd, "200 result=%d (hangup) endpos=%ld\n", 0, sample_offset);
 543                                 ast_closestream(fs);
 544                                 return RESULT_FAILURE;
 545                         }
 546                         switch(f->frametype) {
 547                         case AST_FRAME_DTMF:
 548                                 if (strchr(argv[4], f->subclass)) {
 549                                         /* This is an interrupting chracter */
 550                                         sample_offset = ast_tellstream(fs);
 551                                         fdprintf(agi->fd, "200 result=%d (dtmf) endpos=%ld\n", f->subclass, sample_offset);
 552                                         ast_closestream(fs);
 553                                         ast_frfree(f);
 554                                         return RESULT_SUCCESS;
 555                                 }
 556                                 break;
 557                         case AST_FRAME_VOICE:
 558                                 ast_writestream(fs, f);
 559                                 /* this is a safe place to check progress since we know that fs
 560                                  * is valid after a write, and it will then have our current
 561                                  * location */
 562                                 sample_offset = ast_tellstream(fs);
 563                                 if (silence > 0) {
 564                                         dspsilence = 0;
 565                                         ast_dsp_silence(sildet, f, &dspsilence);
 566                                         if (dspsilence) {
 567                                                 totalsilence = dspsilence;
 568                                         } else {
 569                                                 totalsilence = 0;
 570                                         }
 571                                         if (totalsilence > silence) {
 572                                              /* Ended happily with silence */
 573                                                 ast_frfree(f);
 574                                                 gotsilence = 1;
 575                                                 break;
 576                                         }
 577                                 }
 578                                 break;
 579                         }
 580                         ast_frfree(f);
 581                         gettimeofday(&tv, NULL);
 582                         if (gotsilence)
 583                                 break;
 584         }
 585
 586                 if (gotsilence) {
 587                         ast_stream_rewind(fs, silence-1000);
 588                         ast_truncstream(fs);
 589                 }
 590                 fdprintf(agi->fd, "200 result=%d (timeout) endpos=%ld\n", res, sample_offset);
 591                 ast_closestream(fs);
 592         } else
 593                 fdprintf(agi->fd, "200 result=%d (randomerror) endpos=%ld\n", res, sample_offset);
 594
 595         if (silence > 0) {
 596                 res = ast_set_read_format(chan, rfmt);
 597                 if (res)
 598                         ast_log(LOG_WARNING, "Unable to restore read format on '%s'\n", chan->name);
 599                 ast_dsp_free(sildet);
 600         }
 601         return RESULT_SUCCESS;
 602 }
 603
 604 static int handle_autohangup(struct ast_channel *chan, AGI *agi, int argc, char *argv[])
 605 {
 606         int timeout;
 607
 608         if (argc != 3)
 609                 return RESULT_SHOWUSAGE;
 610         if (sscanf(argv[2], "%d", &timeout) != 1)
 611                 return RESULT_SHOWUSAGE;
 612         if (timeout < 0)
 613                 timeout = 0;
 614         if (timeout)
 615                 chan->whentohangup = time(NULL) + timeout;
 616         else
 617                 chan->whentohangup = 0;
 618         fdprintf(agi->fd, "200 result=0\n");
 619         return RESULT_SUCCESS;
 620 }
 621
 622 static int handle_hangup(struct ast_channel *chan, AGI *agi, int argc, char **argv)
 623 {
 624         struct ast_channel *c;
 625         if (argc==1) {
 626             /* no argument: hangup the current channel */
 627             ast_softhangup(chan,AST_SOFTHANGUP_EXPLICIT);
 628             fdprintf(agi->fd, "200 result=1\n");
 629             return RESULT_SUCCESS;
 630         } else if (argc==2) {
 631             /* one argument: look for info on the specified channel */
 632             c = ast_channel_walk(NULL);
 633             while (c) {
 634                 if (strcasecmp(argv[1],c->name)==0) {
 635                     /* we have a matching channel */
 636                     ast_softhangup(c,AST_SOFTHANGUP_EXPLICIT);
 637                     fdprintf(agi->fd, "200 result=1\n");
 638                     return RESULT_SUCCESS;
 639                 }
 640                 c = ast_channel_walk(c);
 641             }
 642             /* if we get this far no channel name matched the argument given */
 643             fdprintf(agi->fd, "200 result=-1\n");
 644             return RESULT_SUCCESS;
 645         } else {
 646             return RESULT_SHOWUSAGE;
 647         }
 648 }
 649
 650 static int handle_exec(struct ast_channel *chan, AGI *agi, int argc, char **argv)
 651 {
 652         int res;
 653         struct ast_app *app;
 654
 655         if (argc < 2)
 656                 return RESULT_SHOWUSAGE;
 657
 658         if (option_verbose > 2)
 659                 ast_verbose(VERBOSE_PREFIX_3 "AGI Script Executing Application: (%s) Options: (%s)\n", argv[1], argv[2]);
 660
 661         app = pbx_findapp(argv[1]);
 662
 663         if (app) {
 664                 res = pbx_exec(chan, app, argv[2], 1);
 665         } else {
 666                 ast_log(LOG_WARNING, "Could not find application (%s)\n", argv[1]);
 667                 res = -2;
 668         }
 669         fdprintf(agi->fd, "200 result=%d\n", res);
 670
 671         return res;
 672 }
 673
 674 static int handle_setcallerid(struct ast_channel *chan, AGI *agi, int argc, char **argv)
 675 {
 676         if (argv[2])
 677                 ast_set_callerid(chan, argv[2], 0);
 678
 679 /*      strncpy(chan->callerid, argv[2], sizeof(chan->callerid)-1);
 680 */      fdprintf(agi->fd, "200 result=1\n");
 681         return RESULT_SUCCESS;
 682 }
 683
 684 static int handle_channelstatus(struct ast_channel *chan, AGI *agi, int argc, char **argv)
 685 {
 686         struct ast_channel *c;
 687         if (argc==2) {
 688             /* no argument: supply info on the current channel */
 689             fdprintf(agi->fd, "200 result=%d\n", chan->_state);
 690             return RESULT_SUCCESS;
 691         } else if (argc==3) {
 692             /* one argument: look for info on the specified channel */
 693             c = ast_channel_walk(NULL);
 694             while (c) {
 695                 if (strcasecmp(argv[2],c->name)==0) {
 696                     fdprintf(agi->fd, "200 result=%d\n", c->_state);
 697                     return RESULT_SUCCESS;
 698                 }
 699                 c = ast_channel_walk(c);
 700             }
 701             /* if we get this far no channel name matched the argument given */
 702             fdprintf(agi->fd, "200 result=-1\n");
 703             return RESULT_SUCCESS;
 704         } else {
 705             return RESULT_SHOWUSAGE;
 706         }
 707 }
 708
 709 static int handle_setvariable(struct ast_channel *chan, AGI *agi, int argc, char **argv)
 710 {
 711         if (argv[3])
 712                 pbx_builtin_setvar_helper(chan, argv[2], argv[3]);
 713
 714         fdprintf(agi->fd, "200 result=1\n");
 715         return RESULT_SUCCESS;
 716 }
 717
 718 static int handle_getvariable(struct ast_channel *chan, AGI *agi, int argc, char **argv)
 719 {
 720         char *tempstr;
 721
 722         if ((tempstr = pbx_builtin_getvar_helper(chan, argv[2])) )
 723                         fdprintf(agi->fd, "200 result=1 (%s)\n", tempstr);
 724         else
 725                         fdprintf(agi->fd, "200 result=0\n");
 726
 727         return RESULT_SUCCESS;
 728 }
 729
 730 static int handle_verbose(struct ast_channel *chan, AGI *agi, int argc, char **argv)
 731 {
 732         int level = 0;
 733         char *prefix;
 734
 735         if (argc < 2)
 736                 return RESULT_SHOWUSAGE;
 737
 738         if (argv[2])
 739                 sscanf(argv[2], "%d", &level);
 740
 741         switch (level) {
 742                 case 4:
 743                         prefix = VERBOSE_PREFIX_4;
 744                         break;
 745                 case 3:
 746                         prefix = VERBOSE_PREFIX_3;
 747                         break;
 748                 case 2:
 749                         prefix = VERBOSE_PREFIX_2;
 750                         break;
 751                 case 1:
 752                 default:
 753                         prefix = VERBOSE_PREFIX_1;
 754                         break;
 755         }
 756
 757         if (level <= option_verbose)
 758                 ast_verbose("%s %s: %s\n", prefix, chan->data, argv[1]);
 759
 760         fdprintf(agi->fd, "200 result=1\n");
 761
 762         return RESULT_SUCCESS;
 763 }
 764
 765 static int handle_dbget(struct ast_channel *chan, AGI *agi, int argc, char **argv)
 766 {
 767         int res;
 768         char tmp[256];
 769         if (argc != 4)
 770                 return RESULT_SHOWUSAGE;
 771         res = ast_db_get(argv[2], argv[3], tmp, sizeof(tmp));
 772         if (res)
 773                         fdprintf(agi->fd, "200 result=0\n");
 774         else
 775                         fdprintf(agi->fd, "200 result=1 (%s)\n", tmp);
 776
 777         return RESULT_SUCCESS;
 778 }
 779
 780 static int handle_dbput(struct ast_channel *chan, AGI *agi, int argc, char **argv)
 781 {
 782         int res;
 783         if (argc != 5)
 784                 return RESULT_SHOWUSAGE;
 785         res = ast_db_put(argv[2], argv[3], argv[4]);
 786         if (res)
 787                         fdprintf(agi->fd, "200 result=0\n");
 788         else
 789                         fdprintf(agi->fd, "200 result=1\n");
 790
 791         return RESULT_SUCCESS;
 792 }
 793
 794 static int handle_dbdel(struct ast_channel *chan, AGI *agi, int argc, char **argv)
 795 {
 796         int res;
 797         if (argc != 4)
 798                 return RESULT_SHOWUSAGE;
 799         res = ast_db_del(argv[2], argv[3]);
 800         if (res)
 801                 fdprintf(agi->fd, "200 result=0\n");
 802         else
 803                 fdprintf(agi->fd, "200 result=1\n");
 804
 805         return RESULT_SUCCESS;
 806 }
 807
 808 static int handle_dbdeltree(struct ast_channel *chan, AGI *agi, int argc, char **argv)
 809 {
 810         int res;
 811         if ((argc < 3) || (argc > 4))
 812                 return RESULT_SHOWUSAGE;
 813         if (argc == 4)
 814                 res = ast_db_deltree(argv[2], argv[3]);
 815         else
 816                 res = ast_db_deltree(argv[2], NULL);
 817
 818         if (res)
 819                 fdprintf(agi->fd, "200 result=0\n");
 820         else
 821                 fdprintf(agi->fd, "200 result=1\n");
 822         return RESULT_SUCCESS;
 823 }
 824
 825 static int handle_noop(struct ast_channel *chan, AGI *agi, int arg, char *argv[])
 826 {
 827         fdprintf(agi->fd, "200 result=0\n");
 828         return RESULT_SUCCESS;
 829 }
 830
 831 static int handle_setmusic(struct ast_channel *chan, AGI *agi, int argc, char *argv[])
 832 {
 833         if (!strncasecmp(argv[2],"on",2)) {
 834                 if (argc > 3)
 835                         ast_moh_start(chan, argv[3]);
 836                 else
 837                         ast_moh_start(chan, NULL);
 838         }
 839         if (!strncasecmp(argv[2],"off",3)) {
 840                 ast_moh_stop(chan);
 841         }
 842         fdprintf(agi->fd, "200 result=0\n");
 843         return RESULT_SUCCESS;
 844 }
 845
 846 static char usage_setmusic[] =
 847 " Usage: SET MUSIC ON <on|off> <class>\n"
 848 "       Enables/Disables the music on hold generator.  If <class> is\n"
 849 " not specified then the default music on hold class will be used.\n"
 850 " Always returns 0\n";
 851
 852 static char usage_dbput[] =
 853 " Usage: DATABASE PUT <family> <key> <value>\n"
 854 "       Adds or updates an entry in the Asterisk database for a\n"
 855 " given family, key, and value.\n"
 856 " Returns 1 if succesful, 0 otherwise\n";
 857
 858 static char usage_dbget[] =
 859 " Usage: DATABASE GET <family> <key>\n"
 860 "       Retrieves an entry in the Asterisk database for a\n"
 861 " given family and key.\n"
 862 "       Returns 0 if <key> is not set.  Returns 1 if <key>\n"
 863 " is set and returns the variable in parenthesis\n"
 864 " example return code: 200 result=1 (testvariable)\n";
 865
 866 static char usage_dbdel[] =
 867 " Usage: DATABASE DEL <family> <key>\n"
 868 "       Deletes an entry in the Asterisk database for a\n"
 869 " given family and key.\n"
 870 " Returns 1 if succesful, 0 otherwise\n";
 871
 872 static char usage_dbdeltree[] =
 873 " Usage: DATABASE DELTREE <family> [keytree]\n"
 874 "       Deletes a family or specific keytree withing a family\n"
 875 " in the Asterisk database.\n"
 876 " Returns 1 if succesful, 0 otherwise\n";
 877
 878 static char usage_verbose[] =
 879 " Usage: VERBOSE <message> <level>\n"
 880 "       Sends <message> to the console via verbose message system.\n"
 881 "       <level> is the the verbose level (1-4)\n"
 882 "       Always returns 1\n";
 883
 884 static char usage_getvariable[] =
 885 " Usage: GET VARIABLE <variablename>\n"
 886 "       Returns 0 if <variablename> is not set.  Returns 1 if <variablename>\n"
 887 " is set and returns the variable in parenthesis\n"
 888 " example return code: 200 result=1 (testvariable)\n";
 889
 890 static char usage_setvariable[] =
 891 " Usage: SET VARIABLE <variablename> <value>\n";
 892
 893 static char usage_channelstatus[] =
 894 " Usage: CHANNEL STATUS [<channelname>]\n"
 895 "       Returns the status of the specified channel.\n"
 896 "       If no channel name is given the returns the status of the\n"
 897 "       current channel.\n"
 898 "       Return values:\n"
 899 " 0 Channel is down and available\n"
 900 " 1 Channel is down, but reserved\n"
 901 " 2 Channel is off hook\n"
 902 " 3 Digits (or equivalent) have been dialed\n"
 903 " 4 Line is ringing\n"
 904 " 5 Remote end is ringing\n"
 905 " 6 Line is up\n"
 906 " 7 Line is busy\n";
 907
 908 static char usage_setcallerid[] =
 909 " Usage: SET CALLERID <number>\n"
 910 "       Changes the callerid of the current channel.\n";
 911
 912 static char usage_exec[] =
 913 " Usage: EXEC <application> <options>\n"
 914 "       Executes <application> with given <options>.\n"
 915 "       Returns whatever the application returns, or -2 on failure to find application\n";
 916
 917 static char usage_hangup[] =
 918 " Usage: HANGUP [<channelname>]\n"
 919 "       Hangs up the specified channel.\n"
 920 "       If no channel name is given, hangs up the current channel\n";
 921
 922 static char usage_answer[] =
 923 " Usage: ANSWER\n"
 924 "        Answers channel if not already in answer state. Returns -1 on\n"
 925 " channel failure, or 0 if successful.\n";
 926
 927 static char usage_waitfordigit[] =
 928 " Usage: WAIT FOR DIGIT <timeout>\n"
 929 "        Waits up to 'timeout' milliseconds for channel to receive a DTMF digit.\n"
 930 " Returns -1 on channel failure, 0 if no digit is received in the timeout, or\n"
 931 " the numerical value of the ascii of the digit if one is received.  Use -1\n"
 932 " for the timeout value if you desire the call to block indefinitely.\n";
 933
 934 static char usage_sendtext[] =
 935 " Usage: SEND TEXT \"<text to send>\"\n"
 936 "        Sends the given text on a channel.  Most channels do not support the\n"
 937 " transmission of text.  Returns 0 if text is sent, or if the channel does not\n"
 938 " support text transmission.  Returns -1 only on error/hangup.  Text\n"
 939 " consisting of greater than one word should be placed in quotes since the\n"
 940 " command only accepts a single argument.\n";
 941
 942 static char usage_recvchar[] =
 943 " Usage: RECEIVE CHAR <timeout>\n"
 944 "        Receives a character of text on a channel.  Specify timeout to be the\n"
 945 " maximum time to wait for input in milliseconds, or 0 for infinite. Most channels\n"
 946 " do not support the reception of text.  Returns the decimal value of the character\n"
 947 " if one is received, or 0 if the channel does not support text reception.  Returns\n"
 948 " -1 only on error/hangup.\n";
 949
 950 static char usage_tddmode[] =
 951 " Usage: TDD MODE <on|off>\n"
 952 "        Enable/Disable TDD transmission/reception on a channel. Returns 1 if\n"
 953 " successful, or 0 if channel is not TDD-capable.\n";
 954
 955 static char usage_sendimage[] =
 956 " Usage: SEND IMAGE <image>\n"
 957 "        Sends the given image on a channel.  Most channels do not support the\n"
 958 " transmission of images.  Returns 0 if image is sent, or if the channel does not\n"
 959 " support image transmission.  Returns -1 only on error/hangup.  Image names\n"
 960 " should not include extensions.\n";
 961
 962 static char usage_streamfile[] =
 963 " Usage: STREAM FILE <filename> <escape digits> [sample offset]\n"
 964 "        Send the given file, allowing playback to be interrupted by the given\n"
 965 " digits, if any.  Use double quotes for the digits if you wish none to be\n"
 966 " permitted.  If sample offset is provided then the audio will seek to sample\n"
 967 " offset before play starts.  Returns 0 if playback completes without a digit\n"
 968 " being pressed, or the ASCII numerical value of the digit if one was pressed,\n"
 969 " or -1 on error or if the channel was disconnected.  Remember, the file\n"
 970 " extension must not be included in the filename.\n";
 971
 972 static char usage_saynumber[] =
 973 " Usage: SAY NUMBER <number> <escape digits>\n"
 974 "        Say a given number, returning early if any of the given DTMF digits\n"
 975 " are received on the channel.  Returns 0 if playback completes without a digit\n"
 976 " being pressed, or the ASCII numerical value of the digit if one was pressed or\n"
 977 " -1 on error/hangup.\n";
 978
 979 static char usage_saydigits[] =
 980 " Usage: SAY DIGITS <number> <escape digits>\n"
 981 "        Say a given digit string, returning early if any of the given DTMF digits\n"
 982 " are received on the channel.  Returns 0 if playback completes without a digit\n"
 983 " being pressed, or the ASCII numerical value of the digit if one was pressed or\n"
 984 " -1 on error/hangup.\n";
 985
 986 static char usage_getdata[] =
 987 " Usage: GET DATA <file to be streamed> [timeout] [max digits]\n"
 988 "        Stream the given file, and recieve DTMF data. Returns the digits recieved\n"
 989 "from the channel at the other end.\n";
 990
 991 static char usage_setcontext[] =
 992 " Usage: SET CONTEXT <desired context>\n"
 993 "        Sets the context for continuation upon exiting the application.\n";
 994
 995 static char usage_setextension[] =
 996 " Usage: SET EXTENSION <new extension>\n"
 997 "        Changes the extension for continuation upon exiting the application.\n";
 998
 999 static char usage_setpriority[] =
1000 " Usage: SET PRIORITY <num>\n"
1001 "        Changes the priority for continuation upon exiting the application.\n";
1002
1003 static char usage_recordfile[] =
1004 " Usage: RECORD FILE <filename> <format> <escape digits> <timeout> [offset samples] [BEEP] [s=silence]\n"
1005 "        Record to a file until a given dtmf digit in the sequence is received\n"
1006 " Returns -1 on hangup or error.  The format will specify what kind of file\n"
1007 " will be recorded.  The timeout is the maximum record time in milliseconds, or\n"
1008 " -1 for no timeout. Offset samples is optional, and if provided will seek to\n"
1009 " the offset without exceeding the end of the file.  \"silence\" is the number\n"
1010 " of seconds of silence allowed before the function returns despite the\n"
1011 " lack of dtmf digits or reaching timeout.  Silence value must be\n"
1012 " preceeded by \"s=\" and is optional.\n";
1013
1014
1015 static char usage_autohangup[] =
1016 " Usage: SET AUTOHANGUP <time>\n"
1017 "    Cause the channel to automatically hangup at <time> seconds in the\n"
1018 "future.  Of course it can be hungup before then as well.   Setting to\n"
1019 "0 will cause the autohangup feature to be disabled on this channel.\n";
1020
1021 static char usage_noop[] =
1022 " Usage: NOOP\n"
1023 "    Does nothing.\n";
1024
1025 static agi_command commands[] = {
1026         { { "answer", NULL }, handle_answer, "Asserts answer", usage_answer },
1027         { { "wait", "for", "digit", NULL }, handle_waitfordigit, "Waits for a digit to be pressed", usage_waitfordigit },
1028         { { "send", "text", NULL }, handle_sendtext, "Sends text to channels supporting it", usage_sendtext },
1029         { { "receive", "char", NULL }, handle_recvchar, "Receives text from channels supporting it", usage_recvchar },
1030         { { "tdd", "mode", NULL }, handle_tddmode, "Sends text to channels supporting it", usage_tddmode },
1031         { { "stream", "file", NULL }, handle_streamfile, "Sends audio file on channel", usage_streamfile },
1032         { { "send", "image", NULL }, handle_sendimage, "Sends images to channels supporting it", usage_sendimage },
1033         { { "say", "digits", NULL }, handle_saydigits, "Says a given digit string", usage_saydigits },
1034         { { "say", "number", NULL }, handle_saynumber, "Says a given number", usage_saynumber },
1035         { { "get", "data", NULL }, handle_getdata, "Gets data on a channel", usage_getdata },
1036         { { "set", "context", NULL }, handle_setcontext, "Sets channel context", usage_setcontext },
1037         { { "set", "extension", NULL }, handle_setextension, "Changes channel extension", usage_setextension },
1038         { { "set", "priority", NULL }, handle_setpriority, "Prioritizes the channel", usage_setpriority },
1039         { { "record", "file", NULL }, handle_recordfile, "Records to a given file", usage_recordfile },
1040         { { "set", "autohangup", NULL }, handle_autohangup, "Autohangup channel in some time", usage_autohangup },
1041         { { "hangup", NULL }, handle_hangup, "Hangup the current channel", usage_hangup },
1042         { { "exec", NULL }, handle_exec, "Executes a given Application", usage_exec },
1043         { { "set", "callerid", NULL }, handle_setcallerid, "Sets callerid for the current channel", usage_setcallerid },
1044         { { "channel", "status", NULL }, handle_channelstatus, "Returns status of the connected channel", usage_channelstatus },
1045         { { "set", "variable", NULL }, handle_setvariable, "Sets a channel variable", usage_setvariable },
1046         { { "get", "variable", NULL }, handle_getvariable, "Gets a channel variable", usage_getvariable },
1047         { { "verbose", NULL }, handle_verbose, "Logs a message to the asterisk verbose log", usage_verbose },
1048         { { "database", "get", NULL }, handle_dbget, "Gets database value", usage_dbget },
1049         { { "database", "put", NULL }, handle_dbput, "Adds/updates database value", usage_dbput },
1050         { { "database", "del", NULL }, handle_dbdel, "Removes database key/value", usage_dbdel },
1051         { { "database", "deltree", NULL }, handle_dbdeltree, "Removes database keytree/value", usage_dbdeltree },
1052         { { "noop", NULL }, handle_noop, "Does nothing", usage_noop },
1053         { { "set", "music", NULL }, handle_setmusic, "Enable/Disable Music on hold generator", usage_setmusic }
1054 };
1055
1056 static void join(char *s, int len, char *w[])
1057 {
1058         int x;
1059         /* Join words into a string */
1060         strcpy(s, "");
1061         for (x=0;w[x];x++) {
1062                 if (x)
1063                         strncat(s, " ", len - strlen(s));
1064                 strncat(s, w[x], len - strlen(s));
1065         }
1066 }
1067
1068 static int help_workhorse(int fd, char *match[])
1069 {
1070         char fullcmd[80];
1071         char matchstr[80];
1072         int x;
1073         struct agi_command *e;
1074         if (match)
1075                 join(matchstr, sizeof(matchstr), match);
1076         for (x=0;x<sizeof(commands)/sizeof(commands[0]);x++) {
1077                 e = &commands[x];
1078                 if (e)
1079                         join(fullcmd, sizeof(fullcmd), e->cmda);
1080                 /* Hide commands that start with '_' */
1081                 if (fullcmd[0] == '_')
1082                         continue;
1083                 if (match) {
1084                         if (strncasecmp(matchstr, fullcmd, strlen(matchstr))) {
1085                                 continue;
1086                         }
1087                 }
1088                 ast_cli(fd, "%20.20s   %s\n", fullcmd, e->summary);
1089         }
1090         return 0;
1091 }
1092
1093 static agi_command *find_command(char *cmds[], int exact)
1094 {
1095         int x;
1096         int y;
1097         int match;
1098         for (x=0;x < sizeof(commands) / sizeof(commands[0]);x++) {
1099                 /* start optimistic */
1100                 match = 1;
1101                 for (y=0;match && cmds[y]; y++) {
1102                         /* If there are no more words in the command (and we're looking for
1103                            an exact match) or there is a difference between the two words,
1104                            then this is not a match */
1105                         if (!commands[x].cmda[y] && !exact)
1106                                 break;
1107                         /* don't segfault if the next part of a command doesn't exist */
1108                         if (!commands[x].cmda[y]) return NULL;
1109                         if (strcasecmp(commands[x].cmda[y], cmds[y]))
1110                                 match = 0;
1111                 }
1112                 /* If more words are needed to complete the command then this is not
1113                    a candidate (unless we're looking for a really inexact answer  */
1114                 if ((exact > -1) && commands[x].cmda[y])
1115                         match = 0;
1116                 if (match)
1117                         return &commands[x];
1118         }
1119         return NULL;
1120 }
1121
1122
1123 static int parse_args(char *s, int *max, char *argv[])
1124 {
1125         int x=0;
1126         int quoted=0;
1127         int escaped=0;
1128         int whitespace=1;
1129         char *cur;
1130
1131         cur = s;
1132         while(*s) {
1133                 switch(*s) {
1134                 case '"':
1135                         /* If it's escaped, put a literal quote */
1136                         if (escaped)
1137                                 goto normal;
1138                         else
1139                                 quoted = !quoted;
1140                         if (quoted && whitespace) {
1141                                 /* If we're starting a quote, coming off white space start a new word, too */
1142                                 argv[x++] = cur;
1143                                 whitespace=0;
1144                         }
1145                         escaped = 0;
1146                 break;
1147                 case ' ':
1148                 case '\t':
1149                         if (!quoted && !escaped) {
1150                                 /* If we're not quoted, mark this as whitespace, and
1151                                    end the previous argument */
1152                                 whitespace = 1;
1153                                 *(cur++) = '\0';
1154                         } else
1155                                 /* Otherwise, just treat it as anything else */
1156                                 goto normal;
1157                         break;
1158                 case '\\':
1159                         /* If we're escaped, print a literal, otherwise enable escaping */
1160                         if (escaped) {
1161                                 goto normal;
1162                         } else {
1163                                 escaped=1;
1164                         }
1165                         break;
1166                 default:
1167 normal:
1168                         if (whitespace) {
1169                                 if (x >= MAX_ARGS -1) {
1170                                         ast_log(LOG_WARNING, "Too many arguments, truncating\n");
1171                                         break;
1172                                 }
1173                                 /* Coming off of whitespace, start the next argument */
1174                                 argv[x++] = cur;
1175                                 whitespace=0;
1176                         }
1177                         *(cur++) = *s;
1178                         escaped=0;
1179                 }
1180                 s++;
1181         }
1182         /* Null terminate */
1183         *(cur++) = '\0';
1184         argv[x] = NULL;
1185         *max = x;
1186         return 0;
1187 }
1188
1189 static int agi_handle_command(struct ast_channel *chan, AGI *agi, char *buf)
1190 {
1191         char *argv[MAX_ARGS];
1192         int argc = 0;
1193         int res;
1194         agi_command *c;
1195         argc = MAX_ARGS;
1196         parse_args(buf, &argc, argv);
1197 #if     0
1198         { int x;
1199         for (x=0;x<argc;x++)
1200                 fprintf(stderr, "Got Arg%d: %s\n", x, argv[x]); }
1201 #endif
1202         c = find_command(argv, 0);
1203         if (c) {
1204                 res = c->handler(chan, agi, argc, argv);
1205                 switch(res) {
1206                 case RESULT_SHOWUSAGE:
1207                         fdprintf(agi->fd, "520-Invalid command syntax.  Proper usage follows:\n");
1208                         fdprintf(agi->fd, c->usage);
1209                         fdprintf(agi->fd, "520 End of proper usage.\n");
1210                         break;
1211                 case RESULT_FAILURE:
1212                         /* They've already given the failure.  We've been hung up on so handle this
1213                            appropriately */
1214                         return -1;
1215                 }
1216         } else {
1217                 fdprintf(agi->fd, "510 Invalid or unknown command\n");
1218         }
1219         return 0;
1220 }
1221
1222 static int run_agi(struct ast_channel *chan, char *request, AGI *agi, int pid)
1223 {
1224         struct ast_channel *c;
1225         int outfd;
1226         int ms;
1227         int returnstatus = 0;
1228         struct ast_frame *f;
1229         char buf[2048];
1230         FILE *readf;
1231         if (!(readf = fdopen(agi->ctrl, "r"))) {
1232                 ast_log(LOG_WARNING, "Unable to fdopen file descriptor\n");
1233                 kill(pid, SIGHUP);
1234                 return -1;
1235         }
1236         setlinebuf(readf);
1237         setup_env(chan, request, agi->fd, (agi->audio > -1));
1238         for (;;) {
1239                 ms = -1;
1240                 c = ast_waitfor_nandfds(&chan, 1, &agi->ctrl, 1, NULL, &outfd, &ms);
1241                 if (c) {
1242                         /* Idle the channel until we get a command */
1243                         f = ast_read(c);
1244                         if (!f) {
1245                                 ast_log(LOG_DEBUG, "%s hungup\n", chan->name);
1246                                 returnstatus = -1;
1247                                 break;
1248                         } else {
1249                                 /* If it's voice, write it to the audio pipe */
1250                                 if ((agi->audio > -1) && (f->frametype == AST_FRAME_VOICE)) {
1251                                         /* Write, ignoring errors */
1252                                         write(agi->audio, f->data, f->datalen);
1253                                 }
1254                                 ast_frfree(f);
1255                         }
1256                 } else if (outfd > -1) {
1257                         if (!fgets(buf, sizeof(buf), readf)) {
1258                                 /* Program terminated */
1259                                 if (returnstatus)
1260                                         returnstatus = -1;
1261                                 if (option_verbose > 2)
1262                                         ast_verbose(VERBOSE_PREFIX_3 "AGI Script %s completed, returning %d\n", request, returnstatus);
1263                                 /* No need to kill the pid anymore, since they closed us */
1264                                 pid = -1;
1265                                 break;
1266                         }
1267                           /* get rid of trailing newline, if any */
1268                         if (*buf && buf[strlen(buf) - 1] == '\n')
1269                                 buf[strlen(buf) - 1] = 0;
1270
1271                         returnstatus |= agi_handle_command(chan, agi, buf);
1272                         /* If the handle_command returns -1, we need to stop */
1273                         if (returnstatus < 0) {
1274                                 break;
1275                         }
1276                 } else {
1277                         ast_log(LOG_WARNING, "No channel, no fd?\n");
1278                         returnstatus = -1;
1279                         break;
1280                 }
1281         }
1282         /* Notify process */
1283         if (pid > -1)
1284                 kill(pid, SIGHUP);
1285         fclose(readf);
1286         return returnstatus;
1287 }
1288
1289 static int handle_showagi(int fd, int argc, char *argv[]) {
1290         struct agi_command *e;
1291         char fullcmd[80];
1292         if ((argc < 2))
1293                 return RESULT_SHOWUSAGE;
1294         if (argc > 2) {
1295                 e = find_command(argv + 2, 1);
1296                 if (e)
1297                         ast_cli(fd, e->usage);
1298                 else {
1299                         if (find_command(argv + 2, -1)) {
1300                                 return help_workhorse(fd, argv + 1);
1301                         } else {
1302                                 join(fullcmd, sizeof(fullcmd), argv+1);
1303                                 ast_cli(fd, "No such command '%s'.\n", fullcmd);
1304                         }
1305                 }
1306         } else {
1307                 return help_workhorse(fd, NULL);
1308         }
1309         return RESULT_SUCCESS;
1310 }
1311
1312 static int handle_dumpagihtml(int fd, int argc, char *argv[]) {
1313         struct agi_command *e;
1314         char fullcmd[80];
1315         char *tempstr;
1316         int x;
1317         FILE *htmlfile;
1318
1319         if ((argc < 3))
1320                 return RESULT_SHOWUSAGE;
1321
1322         if (!(htmlfile = fopen(argv[2], "wt"))) {
1323                 ast_cli(fd, "Could not create file '%s'\n", argv[2]);
1324                 return RESULT_SHOWUSAGE;
1325         }
1326
1327         fprintf(htmlfile, "<HTML>\n<HEAD>\n<TITLE>AGI Commands</TITLE>\n</HEAD>\n");
1328         fprintf(htmlfile, "<BODY>\n<CENTER><B><H1>AGI Commands</H1></B></CENTER>\n\n");
1329
1330
1331         fprintf(htmlfile, "<TABLE BORDER=\"0\" CELLSPACING=\"10\">\n");
1332
1333         for (x=0;x<sizeof(commands)/sizeof(commands[0]);x++) {
1334                 char *stringp=NULL;
1335                 e = &commands[x];
1336                 if (e)
1337                         join(fullcmd, sizeof(fullcmd), e->cmda);
1338                 /* Hide commands that start with '_' */
1339                 if (fullcmd[0] == '_')
1340                         continue;
1341
1342                 fprintf(htmlfile, "<TR><TD><TABLE BORDER=\"1\" CELLPADDING=\"5\" WIDTH=\"100%%\">\n");
1343                 fprintf(htmlfile, "<TR><TH ALIGN=\"CENTER\"><B>%s - %s</B></TD></TR>\n", fullcmd,e->summary);
1344
1345
1346                 stringp=e->usage;
1347                 tempstr = strsep(&stringp, "\n");
1348
1349                 fprintf(htmlfile, "<TR><TD ALIGN=\"CENTER\">%s</TD></TR>\n", tempstr);
1350
1351                 fprintf(htmlfile, "<TR><TD ALIGN=\"CENTER\">\n");
1352                 while ((tempstr = strsep(&stringp, "\n")) != NULL) {
1353                 fprintf(htmlfile, "%s<BR>\n",tempstr);
1354
1355                 }
1356                 fprintf(htmlfile, "</TD></TR>\n");
1357                 fprintf(htmlfile, "</TABLE></TD></TR>\n\n");
1358
1359         }
1360
1361         fprintf(htmlfile, "</TABLE>\n</BODY>\n</HTML>\n");
1362         fclose(htmlfile);
1363         ast_cli(fd, "AGI HTML Commands Dumped to: %s\n", argv[2]);
1364         return RESULT_SUCCESS;
1365 }
1366
1367 static int agi_exec_full(struct ast_channel *chan, void *data, int enhanced)
1368 {
1369         int res=0;
1370         struct localuser *u;
1371         char *args,*ringy;
1372         char tmp[256];
1373         int fds[2];
1374         int efd = -1;
1375         int pid;
1376         char *stringp=tmp;
1377         AGI agi;
1378         if (!data || !strlen(data)) {
1379                 ast_log(LOG_WARNING, "AGI requires an argument (script)\n");
1380                 return -1;
1381         }
1382
1383
1384         memset(&agi, 0, sizeof(agi));
1385         strncpy(tmp, data, sizeof(tmp)-1);
1386         strsep(&stringp, "|");
1387         args = strsep(&stringp, "|");
1388         ringy = strsep(&stringp,"|");
1389         if (!args)
1390                 args = "";
1391         LOCAL_USER_ADD(u);
1392 #if 0
1393          /* Answer if need be */
1394         if (chan->_state != AST_STATE_UP) {
1395                 if (ringy) { /* if for ringing first */
1396                         /* a little ringy-dingy first */
1397                         ast_indicate(chan, AST_CONTROL_RINGING);
1398                         sleep(3);
1399                 }
1400                 if (ast_answer(chan)) {
1401                         LOCAL_USER_REMOVE(u);
1402                         return -1;
1403                 }
1404         }
1405 #endif
1406         res = launch_script(tmp, args, fds, enhanced ? &efd : NULL, &pid);
1407         if (!res) {
1408                 agi.fd = fds[1];
1409                 agi.ctrl = fds[0];
1410                 agi.audio = efd;
1411                 res = run_agi(chan, tmp, &agi, pid);
1412                 close(fds[0]);
1413                 close(fds[1]);
1414                 if (efd > -1)
1415                         close(efd);
1416         }
1417         LOCAL_USER_REMOVE(u);
1418         return res;
1419 }
1420
1421 static int agi_exec(struct ast_channel *chan, void *data)
1422 {
1423         return agi_exec_full(chan, data, 0);
1424 }
1425
1426 static int eagi_exec(struct ast_channel *chan, void *data)
1427 {
1428         int readformat;
1429         int res;
1430         readformat = chan->readformat;
1431         if (ast_set_read_format(chan, AST_FORMAT_SLINEAR)) {
1432                 ast_log(LOG_WARNING, "Unable to set channel '%s' to linear mode\n", chan->name);
1433                 return -1;
1434         }
1435         res = agi_exec_full(chan, data, 1);
1436         if (!res) {
1437                 if (ast_set_read_format(chan, readformat)) {
1438                         ast_log(LOG_WARNING, "Unable to restore channel '%s' to format %s\n", chan->name, ast_getformatname(readformat));
1439                 }
1440         }
1441         return res;
1442 }
1443
1444 static char showagi_help[] =
1445 "Usage: show agi [topic]\n"
1446 "       When called with a topic as an argument, displays usage\n"
1447 "       information on the given command.  If called without a\n"
1448 "       topic, it provides a list of AGI commands.\n";
1449
1450
1451 static char dumpagihtml_help[] =
1452 "Usage: dump agihtml <filename>\n"
1453 "       Dumps the agi command list in html format to given filename\n";
1454
1455 static struct ast_cli_entry showagi =
1456 { { "show", "agi", NULL }, handle_showagi, "Show AGI commands or specific help", showagi_help };
1457
1458 static struct ast_cli_entry dumpagihtml =
1459 { { "dump", "agihtml", NULL }, handle_dumpagihtml, "Dumps a list of agi command in html format", dumpagihtml_help };
1460
1461 int unload_module(void)
1462 {
1463         STANDARD_HANGUP_LOCALUSERS;
1464         ast_cli_unregister(&showagi);
1465         ast_cli_unregister(&dumpagihtml);
1466         ast_unregister_application(eapp);
1467         return ast_unregister_application(app);
1468 }
1469
1470 int load_module(void)
1471 {
1472         ast_cli_register(&showagi);
1473         ast_cli_register(&dumpagihtml);
1474         ast_register_application(eapp, eagi_exec, synopsis, descrip);
1475         return ast_register_application(app, agi_exec, synopsis, descrip);
1476 }
1477
1478 char *description(void)
1479 {
1480         return tdesc;
1481 }
1482
1483 int usecount(void)
1484 {
1485         int res;
1486         STANDARD_USECOUNT(res);
1487         return res;
1488 }
1489
1490 char *key()
1491 {
1492         return ASTERISK_GPL_KEY;
1493 }
1494