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