channels/chan_phone.c

   1 /*
   2  * Asterisk -- A telephony toolkit for Linux.
   3  *
   4  * Generic Linux Telephony Interface driver
   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 <stdio.h>
  15 #include <pthread.h>
  16 #include <string.h>
  17 #include <asterisk/lock.h>
  18 #include <asterisk/channel.h>
  19 #include <asterisk/channel_pvt.h>
  20 #include <asterisk/config.h>
  21 #include <asterisk/logger.h>
  22 #include <asterisk/module.h>
  23 #include <asterisk/pbx.h>
  24 #include <asterisk/options.h>
  25 #include <asterisk/utils.h>
  26 #include <asterisk/callerid.h>
  27 #include <sys/socket.h>
  28 #include <sys/time.h>
  29 #include <errno.h>
  30 #include <unistd.h>
  31 #include <stdlib.h>
  32 #include <arpa/inet.h>
  33 #include <fcntl.h>
  34 #include <sys/ioctl.h>
  35 #include <linux/telephony.h>
  36 /* Still use some IXJ specific stuff */
  37 #include <linux/ixjuser.h>
  38 #include "DialTone.h"
  39
  40 #ifdef QTI_PHONEJACK_TJ_PCI     /* check for the newer quicknet driver v.3.1.0 which has this symbol */
  41 #define QNDRV_VER 310
  42 #else
  43 #define QNDRV_VER 100
  44 #endif
  45
  46 #if QNDRV_VER > 100
  47 #ifdef __linux__
  48 #define IXJ_PHONE_RING_START(x) ioctl(p->fd, PHONE_RING_START, &x);
  49 #else /* FreeBSD and others */
  50 #define IXJ_PHONE_RING_START(x) ioctl(p->fd, PHONE_RING_START, x);
  51 #endif /* __linux__ */
  52 #else   /* older driver */
  53 #define IXJ_PHONE_RING_START(x) ioctl(p->fd, PHONE_RING_START, &x);
  54 #endif
  55
  56
  57 #define DEFAULT_CALLER_ID "Unknown"
  58 #define PHONE_MAX_BUF 480
  59 #define DEFAULT_GAIN 0x100
  60
  61 static char *desc = "Linux Telephony API Support";
  62 static char *type = "Phone";
  63 static char *tdesc = "Standard Linux Telephony API Driver";
  64 static char *config = "phone.conf";
  65
  66 /* Default context for dialtone mode */
  67 static char context[AST_MAX_EXTENSION] = "default";
  68
  69 /* Default language */
  70 static char language[MAX_LANGUAGE] = "";
  71 static int usecnt =0;
  72
  73 static int echocancel = AEC_OFF;
  74
  75 static int silencesupression = 0;
  76
  77 static int prefformat = AST_FORMAT_G723_1 | AST_FORMAT_SLINEAR | AST_FORMAT_ULAW;
  78
  79 AST_MUTEX_DEFINE_STATIC(usecnt_lock);
  80
  81 /* Protect the interface list (of phone_pvt's) */
  82 AST_MUTEX_DEFINE_STATIC(iflock);
  83
  84 /* Protect the monitoring thread, so only one process can kill or start it, and not
  85    when it's doing something critical. */
  86 AST_MUTEX_DEFINE_STATIC(monlock);
  87
  88 /* This is the thread for the monitor which checks for input on the channels
  89    which are not currently in use.  */
  90 static pthread_t monitor_thread = AST_PTHREADT_NULL;
  91
  92 static int restart_monitor(void);
  93
  94 /* The private structures of the Phone Jack channels are linked for
  95    selecting outgoing channels */
  96
  97 #define MODE_DIALTONE   1
  98 #define MODE_IMMEDIATE  2
  99 #define MODE_FXO                3
 100
 101 static struct phone_pvt {
 102         int fd;                                                 /* Raw file descriptor for this device */
 103         struct ast_channel *owner;              /* Channel we belong to, possibly NULL */
 104         int mode;                                               /* Is this in the  */
 105         int lastformat;                                 /* Last output format */
 106         int lastinput;                                  /* Last input format */
 107         int ministate;                                  /* Miniature state, for dialtone mode */
 108         char dev[256];                                  /* Device name */
 109         struct phone_pvt *next;                 /* Next channel in list */
 110         struct ast_frame fr;                    /* Frame */
 111         char offset[AST_FRIENDLY_OFFSET];
 112         char buf[PHONE_MAX_BUF];                                        /* Static buffer for reading frames */
 113         int obuflen;
 114         int dialtone;
 115         int txgain, rxgain;             /* gain control for playing, recording  */
 116                                                                         /* 0x100 - 1.0, 0x200 - 2.0, 0x80 - 0.5 */
 117         int cpt;                                                /* Call Progress Tone playing? */
 118         int silencesupression;
 119         char context[AST_MAX_EXTENSION];
 120         char obuf[PHONE_MAX_BUF * 2];
 121         char ext[AST_MAX_EXTENSION];
 122         char language[MAX_LANGUAGE];
 123         char callerid[AST_MAX_EXTENSION];
 124 } *iflist = NULL;
 125
 126 static char callerid[AST_MAX_EXTENSION];
 127
 128 static int phone_digit(struct ast_channel *ast, char digit)
 129 {
 130         struct phone_pvt *p;
 131         int outdigit;
 132         p = ast->pvt->pvt;
 133         ast_log(LOG_NOTICE, "Dialed %c\n", digit);
 134         switch(digit) {
 135         case '0':
 136         case '1':
 137         case '2':
 138         case '3':
 139         case '4':
 140         case '5':
 141         case '6':
 142         case '7':
 143         case '8':
 144         case '9':
 145                 outdigit = digit - '0';
 146                 break;
 147         case '*':
 148                 outdigit = 11;
 149                 break;
 150         case '#':
 151                 outdigit = 12;
 152                 break;
 153         case 'f':       //flash
 154         case 'F':
 155                 ioctl(p->fd, IXJCTL_PSTN_SET_STATE, PSTN_ON_HOOK);
 156                 usleep(320000);
 157                 ioctl(p->fd, IXJCTL_PSTN_SET_STATE, PSTN_OFF_HOOK);
 158                 p->lastformat = -1;
 159                 return 0;
 160         default:
 161                 ast_log(LOG_WARNING, "Unknown digit '%c'\n", digit);
 162                 return -1;
 163         }
 164         ast_log(LOG_NOTICE, "Dialed %i\n", outdigit);
 165         ioctl(p->fd, PHONE_PLAY_TONE, outdigit);
 166         p->lastformat = -1;
 167         return 0;
 168 }
 169
 170 static int phone_call(struct ast_channel *ast, char *dest, int timeout)
 171 {
 172         struct phone_pvt *p;
 173
 174         PHONE_CID cid;
 175         time_t UtcTime;
 176         struct tm tm;
 177
 178         time(&UtcTime);
 179         localtime_r(&UtcTime,&tm);
 180
 181         if(&tm != NULL) {
 182                 sprintf(cid.month, "%02d",(tm.tm_mon + 1));
 183                 sprintf(cid.day,   "%02d", tm.tm_mday);
 184                 sprintf(cid.hour,  "%02d", tm.tm_hour);
 185                 sprintf(cid.min,   "%02d", tm.tm_min);
 186         }
 187         /* the standard format of ast->callerid is:  "name" <number>, but not always complete */
 188         if (!ast->callerid || ast_strlen_zero(ast->callerid)){
 189                 strcpy(cid.name, DEFAULT_CALLER_ID);
 190                 cid.number[0]='\0';
 191         } else {
 192                 char *n, *l;
 193                 char callerid[256] = "";
 194                 strncpy(callerid, ast->callerid, sizeof(callerid) - 1);
 195                 ast_callerid_parse(callerid, &n, &l);
 196                 if (l) {
 197                         ast_shrink_phone_number(l);
 198                         if (!ast_isphonenumber(l))
 199                                 l = NULL;
 200                 }
 201                 if (l)
 202                         strncpy(cid.number, l, sizeof(cid.number));
 203                 if (n)
 204                         strncpy(cid.name, n, sizeof(cid.name));
 205         }
 206
 207         p = ast->pvt->pvt;
 208
 209         if ((ast->_state != AST_STATE_DOWN) && (ast->_state != AST_STATE_RESERVED)) {
 210                 ast_log(LOG_WARNING, "phone_call called on %s, neither down nor reserved\n", ast->name);
 211                 return -1;
 212         }
 213         if (option_debug)
 214                 ast_log(LOG_DEBUG, "Ringing %s on %s (%d)\n", dest, ast->name, ast->fds[0]);
 215
 216         IXJ_PHONE_RING_START(cid);
 217         ast_setstate(ast, AST_STATE_RINGING);
 218         ast_queue_control(ast, AST_CONTROL_RINGING);
 219         return 0;
 220 }
 221
 222 static int phone_hangup(struct ast_channel *ast)
 223 {
 224         struct phone_pvt *p;
 225         p = ast->pvt->pvt;
 226         if (option_debug)
 227                 ast_log(LOG_DEBUG, "phone_hangup(%s)\n", ast->name);
 228         if (!ast->pvt->pvt) {
 229                 ast_log(LOG_WARNING, "Asked to hangup channel not connected\n");
 230                 return 0;
 231         }
 232         /* XXX Is there anything we can do to really hang up except stop recording? */
 233         ast_setstate(ast, AST_STATE_DOWN);
 234         if (ioctl(p->fd, PHONE_REC_STOP))
 235                 ast_log(LOG_WARNING, "Failed to stop recording\n");
 236         if (ioctl(p->fd, PHONE_PLAY_STOP))
 237                 ast_log(LOG_WARNING, "Failed to stop playing\n");
 238         if (ioctl(p->fd, PHONE_RING_STOP))
 239                 ast_log(LOG_WARNING, "Failed to stop ringing\n");
 240         if (ioctl(p->fd, PHONE_CPT_STOP))
 241                 ast_log(LOG_WARNING, "Failed to stop sounds\n");
 242
 243         /* If it's an FXO, hang them up */
 244         if (p->mode == MODE_FXO) {
 245                 if (ioctl(p->fd, PHONE_PSTN_SET_STATE, PSTN_ON_HOOK))
 246                         ast_log(LOG_DEBUG, "ioctl(PHONE_PSTN_SET_STATE) failed on %s (%s)\n",ast->name, strerror(errno));
 247         }
 248
 249         /* If they're off hook, give a busy signal */
 250         if (ioctl(p->fd, PHONE_HOOKSTATE)) {
 251                 if (option_debug)
 252                         ast_log(LOG_DEBUG, "Got hunghup, giving busy signal\n");
 253                 ioctl(p->fd, PHONE_BUSY);
 254                 p->cpt = 1;
 255         }
 256         p->lastformat = -1;
 257         p->lastinput = -1;
 258         p->ministate = 0;
 259         p->obuflen = 0;
 260         p->dialtone = 0;
 261         memset(p->ext, 0, sizeof(p->ext));
 262         ((struct phone_pvt *)(ast->pvt->pvt))->owner = NULL;
 263         ast_mutex_lock(&usecnt_lock);
 264         usecnt--;
 265         if (usecnt < 0)
 266                 ast_log(LOG_WARNING, "Usecnt < 0???\n");
 267         ast_mutex_unlock(&usecnt_lock);
 268         ast_update_use_count();
 269         if (option_verbose > 2)
 270                 ast_verbose( VERBOSE_PREFIX_3 "Hungup '%s'\n", ast->name);
 271         ast->pvt->pvt = NULL;
 272         ast_setstate(ast, AST_STATE_DOWN);
 273         restart_monitor();
 274         return 0;
 275 }
 276
 277 static int phone_setup(struct ast_channel *ast)
 278 {
 279         struct phone_pvt *p;
 280         p = ast->pvt->pvt;
 281         ioctl(p->fd, PHONE_CPT_STOP);
 282         /* Nothing to answering really, just start recording */
 283         if (ast->pvt->rawreadformat == AST_FORMAT_G723_1) {
 284                 /* Prefer g723 */
 285                 ioctl(p->fd, PHONE_REC_STOP);
 286                 if (p->lastinput != AST_FORMAT_G723_1) {
 287                         p->lastinput = AST_FORMAT_G723_1;
 288                         if (ioctl(p->fd, PHONE_REC_CODEC, G723_63)) {
 289                                 ast_log(LOG_WARNING, "Failed to set codec to g723.1\n");
 290                                 return -1;
 291                         }
 292                 }
 293         } else if (ast->pvt->rawreadformat == AST_FORMAT_SLINEAR) {
 294                 ioctl(p->fd, PHONE_REC_STOP);
 295                 if (p->lastinput != AST_FORMAT_SLINEAR) {
 296                         p->lastinput = AST_FORMAT_SLINEAR;
 297                         if (ioctl(p->fd, PHONE_REC_CODEC, LINEAR16)) {
 298                                 ast_log(LOG_WARNING, "Failed to set codec to signed linear 16\n");
 299                                 return -1;
 300                         }
 301                 }
 302         } else if (ast->pvt->rawreadformat == AST_FORMAT_ULAW) {
 303                 ioctl(p->fd, PHONE_REC_STOP);
 304                 if (p->lastinput != AST_FORMAT_ULAW) {
 305                         p->lastinput = AST_FORMAT_ULAW;
 306                         if (ioctl(p->fd, PHONE_REC_CODEC, ULAW)) {
 307                                 ast_log(LOG_WARNING, "Failed to set codec to uLaw\n");
 308                                 return -1;
 309                         }
 310                 }
 311         } else {
 312                 ast_log(LOG_WARNING, "Can't do format %s\n", ast_getformatname(ast->pvt->rawreadformat));
 313                 return -1;
 314         }
 315         if (ioctl(p->fd, PHONE_REC_START)) {
 316                 ast_log(LOG_WARNING, "Failed to start recording\n");
 317                 return -1;
 318         }
 319         //set the DTMF times (the default is too short)
 320         ioctl(p->fd, PHONE_SET_TONE_ON_TIME, 300);
 321         ioctl(p->fd, PHONE_SET_TONE_OFF_TIME, 200);
 322         return 0;
 323 }
 324
 325 static int phone_answer(struct ast_channel *ast)
 326 {
 327         struct phone_pvt *p;
 328         p = ast->pvt->pvt;
 329         /* In case it's a LineJack, take it off hook */
 330         if (p->mode == MODE_FXO) {
 331                 if (ioctl(p->fd, PHONE_PSTN_SET_STATE, PSTN_OFF_HOOK))
 332                         ast_log(LOG_DEBUG, "ioctl(PHONE_PSTN_SET_STATE) failed on %s (%s)\n", ast->name, strerror(errno));
 333                 else
 334                         ast_log(LOG_DEBUG, "Took linejack off hook\n");
 335         }
 336         phone_setup(ast);
 337         if (option_debug)
 338                 ast_log(LOG_DEBUG, "phone_answer(%s)\n", ast->name);
 339         ast->rings = 0;
 340         ast_setstate(ast, AST_STATE_UP);
 341         return 0;
 342 }
 343
 344 #if 0
 345 static char phone_2digit(char c)
 346 {
 347         if (c == 12)
 348                 return '#';
 349         else if (c == 11)
 350                 return '*';
 351         else if ((c < 10) && (c >= 0))
 352                 return '0' + c - 1;
 353         else
 354                 return '?';
 355 }
 356 #endif
 357
 358 static struct ast_frame  *phone_exception(struct ast_channel *ast)
 359 {
 360         int res;
 361         union telephony_exception phonee;
 362         struct phone_pvt *p = ast->pvt->pvt;
 363         char digit;
 364
 365         /* Some nice norms */
 366         p->fr.datalen = 0;
 367         p->fr.samples = 0;
 368         p->fr.data =  NULL;
 369         p->fr.src = type;
 370         p->fr.offset = 0;
 371         p->fr.mallocd=0;
 372
 373         phonee.bytes = ioctl(p->fd, PHONE_EXCEPTION);
 374         if (phonee.bits.dtmf_ready)  {
 375                 if (option_debug)
 376                         ast_log(LOG_DEBUG, "phone_exception(): DTMF\n");
 377
 378                 /* We've got a digit -- Just handle this nicely and easily */
 379                 digit =  ioctl(p->fd, PHONE_GET_DTMF_ASCII);
 380                 p->fr.subclass = digit;
 381                 p->fr.frametype = AST_FRAME_DTMF;
 382                 return &p->fr;
 383         }
 384         if (phonee.bits.hookstate) {
 385                 if (option_debug)
 386                         ast_log(LOG_DEBUG, "Hookstate changed\n");
 387                 res = ioctl(p->fd, PHONE_HOOKSTATE);
 388                 /* See if we've gone on hook, if so, notify by returning NULL */
 389                 if (option_debug)
 390                         ast_log(LOG_DEBUG, "New hookstate: %d\n", res);
 391                 if (!res && (p->mode != MODE_FXO))
 392                         return NULL;
 393                 else {
 394                         if (ast->_state == AST_STATE_RINGING) {
 395                                 /* They've picked up the phone */
 396                                 p->fr.frametype = AST_FRAME_CONTROL;
 397                                 p->fr.subclass = AST_CONTROL_ANSWER;
 398                                 phone_setup(ast);
 399                                 ast_setstate(ast, AST_STATE_UP);
 400                                 return &p->fr;
 401                         }  else
 402                                 ast_log(LOG_WARNING, "Got off hook in weird state %d\n", ast->_state);
 403                 }
 404         }
 405 #if 1
 406         if (phonee.bits.pstn_ring)
 407                 ast_verbose("Unit is ringing\n");
 408         if (phonee.bits.caller_id) {
 409                 ast_verbose("We have caller ID\n");
 410         }
 411         if (phonee.bits.pstn_wink)
 412                 ast_verbose("Detected Wink\n");
 413 #endif
 414         /* Strange -- nothing there.. */
 415         p->fr.frametype = AST_FRAME_NULL;
 416         p->fr.subclass = 0;
 417         return &p->fr;
 418 }
 419
 420 static struct ast_frame  *phone_read(struct ast_channel *ast)
 421 {
 422         int res;
 423         struct phone_pvt *p = ast->pvt->pvt;
 424
 425
 426         /* Some nice norms */
 427         p->fr.datalen = 0;
 428         p->fr.samples = 0;
 429         p->fr.data =  NULL;
 430         p->fr.src = type;
 431         p->fr.offset = 0;
 432         p->fr.mallocd=0;
 433
 434         /* Try to read some data... */
 435         CHECK_BLOCKING(ast);
 436         res = read(p->fd, p->buf, PHONE_MAX_BUF);
 437         ast->blocking = 0;
 438         if (res < 0) {
 439 #if 0
 440                 if (errno == EAGAIN) {
 441                         ast_log(LOG_WARNING, "Null frame received\n");
 442                         p->fr.frametype = AST_FRAME_NULL;
 443                         p->fr.subclass = 0;
 444                         return &p->fr;
 445                 }
 446 #endif
 447                 ast_log(LOG_WARNING, "Error reading: %s\n", strerror(errno));
 448                 return NULL;
 449         }
 450         p->fr.data = p->buf;
 451         switch(p->buf[0] & 0x3) {
 452         case '0':
 453         case '1':
 454                 /* Normal */
 455                 break;
 456         case '2':
 457         case '3':
 458                 /* VAD/CNG, only send two words */
 459                 res = 4;
 460                 break;
 461         }
 462         p->fr.samples = 240;
 463         p->fr.datalen = res;
 464         p->fr.frametype = AST_FRAME_VOICE;
 465         p->fr.subclass = p->lastinput;
 466         p->fr.offset = AST_FRIENDLY_OFFSET;
 467         return &p->fr;
 468 }
 469
 470 static int phone_write_buf(struct phone_pvt *p, char *buf, int len, int frlen)
 471 {
 472         int res;
 473         /* Store as much of the buffer as we can, then write fixed frames */
 474         int space = sizeof(p->obuf) - p->obuflen;
 475         /* Make sure we have enough buffer space to store the frame */
 476         if (space < len)
 477                 len = space;
 478         memcpy(p->obuf + p->obuflen, buf, len);
 479         p->obuflen += len;
 480         while(p->obuflen > frlen) {
 481                 res = write(p->fd, p->obuf, frlen);
 482                 if (res != frlen) {
 483                         if (res < 1) {
 484 /*
 485  * Card is in non-blocking mode now and it works well now, but there are
 486  * lot of messages like this. So, this message is temporarily disabled.
 487  */
 488                                 return 0;
 489                         } else {
 490                                 ast_log(LOG_WARNING, "Only wrote %d of %d bytes\n", res, frlen);
 491                         }
 492                 }
 493                 p->obuflen -= frlen;
 494                 /* Move memory if necessary */
 495                 if (p->obuflen)
 496                         memmove(p->obuf, p->obuf + frlen, p->obuflen);
 497         }
 498         return len;
 499 }
 500
 501 static int phone_write(struct ast_channel *ast, struct ast_frame *frame)
 502 {
 503         struct phone_pvt *p = ast->pvt->pvt;
 504         int res;
 505         int maxfr=0;
 506         char *pos;
 507         int sofar;
 508         int expected;
 509         int codecset = 0;
 510         char tmpbuf[4];
 511         /* Write a frame of (presumably voice) data */
 512         if (frame->frametype != AST_FRAME_VOICE) {
 513                 if (frame->frametype != AST_FRAME_IMAGE)
 514                         ast_log(LOG_WARNING, "Don't know what to do with  frame type '%d'\n", frame->frametype);
 515                 return 0;
 516         }
 517         if (!(frame->subclass &
 518                 (AST_FORMAT_G723_1 | AST_FORMAT_SLINEAR | AST_FORMAT_ULAW))) {
 519                 ast_log(LOG_WARNING, "Cannot handle frames in %d format\n", frame->subclass);
 520                 return -1;
 521         }
 522 #if 0
 523         /* If we're not in up mode, go into up mode now */
 524         if (ast->_state != AST_STATE_UP) {
 525                 ast_setstate(ast, AST_STATE_UP);
 526                 phone_setup(ast);
 527         }
 528 #else
 529         if (ast->_state != AST_STATE_UP) {
 530                 /* Don't try tos end audio on-hook */
 531                 return 0;
 532         }
 533 #endif
 534         if (frame->subclass == AST_FORMAT_G723_1) {
 535                 if (p->lastformat != AST_FORMAT_G723_1) {
 536                         ioctl(p->fd, PHONE_PLAY_STOP);
 537                         ioctl(p->fd, PHONE_REC_STOP);
 538                         if (ioctl(p->fd, PHONE_PLAY_CODEC, G723_63)) {
 539                                 ast_log(LOG_WARNING, "Unable to set G723.1 mode\n");
 540                                 return -1;
 541                         }
 542                         if (ioctl(p->fd, PHONE_REC_CODEC, G723_63)) {
 543                                 ast_log(LOG_WARNING, "Unable to set G723.1 mode\n");
 544                                 return -1;
 545                         }
 546                         p->lastformat = AST_FORMAT_G723_1;
 547                         p->lastinput = AST_FORMAT_G723_1;
 548                         /* Reset output buffer */
 549                         p->obuflen = 0;
 550                         codecset = 1;
 551                 }
 552                 if (frame->datalen > 24) {
 553                         ast_log(LOG_WARNING, "Frame size too large for G.723.1 (%d bytes)\n", frame->datalen);
 554                         return -1;
 555                 }
 556                 maxfr = 24;
 557         } else if (frame->subclass == AST_FORMAT_SLINEAR) {
 558                 if (p->lastformat != AST_FORMAT_SLINEAR) {
 559                         ioctl(p->fd, PHONE_PLAY_STOP);
 560                         ioctl(p->fd, PHONE_REC_STOP);
 561                         if (ioctl(p->fd, PHONE_PLAY_CODEC, LINEAR16)) {
 562                                 ast_log(LOG_WARNING, "Unable to set 16-bit linear mode\n");
 563                                 return -1;
 564                         }
 565                         if (ioctl(p->fd, PHONE_REC_CODEC, LINEAR16)) {
 566                                 ast_log(LOG_WARNING, "Unable to set 16-bit linear mode\n");
 567                                 return -1;
 568                         }
 569                         p->lastformat = AST_FORMAT_SLINEAR;
 570                         p->lastinput = AST_FORMAT_SLINEAR;
 571                         codecset = 1;
 572                         /* Reset output buffer */
 573                         p->obuflen = 0;
 574                 }
 575                 maxfr = 480;
 576         } else if (frame->subclass == AST_FORMAT_ULAW) {
 577                 if (p->lastformat != AST_FORMAT_ULAW) {
 578                         ioctl(p->fd, PHONE_PLAY_STOP);
 579                         ioctl(p->fd, PHONE_REC_STOP);
 580                         if (ioctl(p->fd, PHONE_PLAY_CODEC, ULAW)) {
 581                                 ast_log(LOG_WARNING, "Unable to set uLaw mode\n");
 582                                 return -1;
 583                         }
 584                         if (ioctl(p->fd, PHONE_REC_CODEC, ULAW)) {
 585                                 ast_log(LOG_WARNING, "Unable to set uLaw mode\n");
 586                                 return -1;
 587                         }
 588                         p->lastformat = AST_FORMAT_ULAW;
 589                         p->lastinput = AST_FORMAT_ULAW;
 590                         codecset = 1;
 591                         /* Reset output buffer */
 592                         p->obuflen = 0;
 593                 }
 594                 maxfr = 240;
 595         }
 596         if (codecset) {
 597                 ioctl(p->fd, PHONE_REC_DEPTH, 3);
 598                 ioctl(p->fd, PHONE_PLAY_DEPTH, 3);
 599                 if (ioctl(p->fd, PHONE_PLAY_START)) {
 600                         ast_log(LOG_WARNING, "Failed to start playback\n");
 601                         return -1;
 602                 }
 603                 if (ioctl(p->fd, PHONE_REC_START)) {
 604                         ast_log(LOG_WARNING, "Failed to start recording\n");
 605                         return -1;
 606                 }
 607         }
 608         /* If we get here, we have a voice frame of Appropriate data */
 609         sofar = 0;
 610         pos = frame->data;
 611         while(sofar < frame->datalen) {
 612                 /* Write in no more than maxfr sized frames */
 613                 expected = frame->datalen - sofar;
 614                 if (maxfr < expected)
 615                         expected = maxfr;
 616                 /* XXX Internet Phone Jack does not handle the 4-byte VAD frame properly! XXX
 617                    we have to pad it to 24 bytes still.  */
 618                 if (frame->datalen == 4) {
 619                         if (p->silencesupression) {
 620                                 memset(tmpbuf + 4, 0, sizeof(tmpbuf) - 4);
 621                                 memcpy(tmpbuf, frame->data, 4);
 622                                 expected = 24;
 623                                 res = phone_write_buf(p, tmpbuf, expected, maxfr);
 624                         }
 625                         res = 4;
 626                         expected=4;
 627                 } else {
 628                         res = phone_write_buf(p, pos, expected, maxfr);
 629                 }
 630                 if (res != expected) {
 631                         if ((errno != EAGAIN) && (errno != EINTR)) {
 632                                 if (res < 0)
 633                                         ast_log(LOG_WARNING, "Write returned error (%s)\n", strerror(errno));
 634         /*
 635          * Card is in non-blocking mode now and it works well now, but there are
 636          * lot of messages like this. So, this message is temporarily disabled.
 637          */
 638 #if 0
 639                                 else
 640                                         ast_log(LOG_WARNING, "Only wrote %d of %d bytes\n", res, frame->datalen);
 641 #endif
 642                                 return -1;
 643                         } else /* Pretend it worked */
 644                                 res = expected;
 645                 }
 646                 sofar += res;
 647                 pos += res;
 648         }
 649         return 0;
 650 }
 651
 652 static struct ast_channel *phone_new(struct phone_pvt *i, int state, char *context)
 653 {
 654         struct ast_channel *tmp;
 655         tmp = ast_channel_alloc(1);
 656         if (tmp) {
 657                 snprintf(tmp->name, sizeof(tmp->name), "Phone/%s", i->dev + 5);
 658                 tmp->type = type;
 659                 tmp->fds[0] = i->fd;
 660                 /* XXX Switching formats silently causes kernel panics XXX */
 661                 tmp->nativeformats = prefformat;
 662                 tmp->pvt->rawreadformat = prefformat;
 663                 tmp->pvt->rawwriteformat = prefformat;
 664                 ast_setstate(tmp, state);
 665                 if (state == AST_STATE_RING)
 666                         tmp->rings = 1;
 667                 tmp->pvt->pvt = i;
 668                 tmp->pvt->send_digit = phone_digit;
 669                 tmp->pvt->call = phone_call;
 670                 tmp->pvt->hangup = phone_hangup;
 671                 tmp->pvt->answer = phone_answer;
 672                 tmp->pvt->read = phone_read;
 673                 tmp->pvt->write = phone_write;
 674                 tmp->pvt->exception = phone_exception;
 675                 strncpy(tmp->context, context, sizeof(tmp->context)-1);
 676                 if (strlen(i->ext))
 677                         strncpy(tmp->exten, i->ext, sizeof(tmp->exten)-1);
 678                 else
 679                         strncpy(tmp->exten, "s",  sizeof(tmp->exten) - 1);
 680                 if (strlen(i->language))
 681                         strncpy(tmp->language, i->language, sizeof(tmp->language)-1);
 682                 if (strlen(i->callerid))
 683                         tmp->callerid = strdup(i->callerid);
 684                 i->owner = tmp;
 685                 ast_mutex_lock(&usecnt_lock);
 686                 usecnt++;
 687                 ast_mutex_unlock(&usecnt_lock);
 688                 ast_update_use_count();
 689                 if (state != AST_STATE_DOWN) {
 690                         if (state == AST_STATE_RING) {
 691                                 ioctl(tmp->fds[0], PHONE_RINGBACK);
 692                                 i->cpt = 1;
 693                         }
 694                         if (ast_pbx_start(tmp)) {
 695                                 ast_log(LOG_WARNING, "Unable to start PBX on %s\n", tmp->name);
 696                                 ast_hangup(tmp);
 697                         }
 698                 }
 699         } else
 700                 ast_log(LOG_WARNING, "Unable to allocate channel structure\n");
 701         return tmp;
 702 }
 703
 704 static void phone_mini_packet(struct phone_pvt *i)
 705 {
 706         int res;
 707         char buf[1024];
 708         /* Ignore stuff we read... */
 709         res = read(i->fd, buf, sizeof(buf));
 710         if (res < 1) {
 711                 ast_log(LOG_WARNING, "Read returned %d\n", res);
 712                 return;
 713         }
 714 }
 715
 716 static void phone_check_exception(struct phone_pvt *i)
 717 {
 718         int offhook=0;
 719         char digit[2] = {0 , 0};
 720         union telephony_exception phonee;
 721         /* XXX Do something XXX */
 722 #if 0
 723         ast_log(LOG_DEBUG, "Exception!\n");
 724 #endif
 725         phonee.bytes = ioctl(i->fd, PHONE_EXCEPTION);
 726         if (phonee.bits.dtmf_ready)  {
 727                 digit[0] = ioctl(i->fd, PHONE_GET_DTMF_ASCII);
 728                 if (i->mode == MODE_DIALTONE) {
 729                         ioctl(i->fd, PHONE_PLAY_STOP);
 730                         ioctl(i->fd, PHONE_REC_STOP);
 731                         ioctl(i->fd, PHONE_CPT_STOP);
 732                         i->dialtone = 0;
 733                         if (strlen(i->ext) < AST_MAX_EXTENSION - 1)
 734                                 strcat(i->ext, digit);
 735                         if (ast_exists_extension(NULL, i->context, i->ext, 1, i->callerid)) {
 736                                 /* It's a valid extension in its context, get moving! */
 737                                 phone_new(i, AST_STATE_RING, i->context);
 738                                 /* No need to restart monitor, we are the monitor */
 739                                 if (i->owner) {
 740                                         ast_mutex_lock(&usecnt_lock);
 741                                         usecnt--;
 742                                         ast_mutex_unlock(&usecnt_lock);
 743                                         ast_update_use_count();
 744                                 }
 745                         } else if (!ast_canmatch_extension(NULL, i->context, i->ext, 1, i->callerid)) {
 746                                 /* There is nothing in the specified extension that can match anymore.
 747                                    Try the default */
 748                                 if (ast_exists_extension(NULL, "default", i->ext, 1, i->callerid)) {
 749                                         /* Check the default, too... */
 750                                         phone_new(i, AST_STATE_RING, "default");
 751                                         if (i->owner) {
 752                                                 ast_mutex_lock(&usecnt_lock);
 753                                                 usecnt--;
 754                                                 ast_mutex_unlock(&usecnt_lock);
 755                                                 ast_update_use_count();
 756                                         }
 757                                         /* XXX This should probably be justified better XXX */
 758                                 }  else if (!ast_canmatch_extension(NULL, "default", i->ext, 1, i->callerid)) {
 759                                         /* It's not a valid extension, give a busy signal */
 760                                         if (option_debug)
 761                                                 ast_log(LOG_DEBUG, "%s can't match anything in %s or default\n", i->ext, i->context);
 762                                         ioctl(i->fd, PHONE_BUSY);
 763                                         i->cpt = 1;
 764                                 }
 765                         }
 766 #if 0
 767                         ast_verbose("Extension is %s\n", i->ext);
 768 #endif
 769                 }
 770         }
 771         if (phonee.bits.hookstate) {
 772                 offhook = ioctl(i->fd, PHONE_HOOKSTATE);
 773                 if (offhook) {
 774                         if (i->mode == MODE_IMMEDIATE) {
 775                                 phone_new(i, AST_STATE_RING, i->context);
 776                         } else if (i->mode == MODE_DIALTONE) {
 777                                 ast_mutex_lock(&usecnt_lock);
 778                                 usecnt++;
 779                                 ast_mutex_unlock(&usecnt_lock);
 780                                 ast_update_use_count();
 781                                 /* Reset the extension */
 782                                 i->ext[0] = '\0';
 783                                 /* Play the dialtone */
 784                                 i->dialtone++;
 785                                 ioctl(i->fd, PHONE_PLAY_STOP);
 786                                 ioctl(i->fd, PHONE_PLAY_CODEC, ULAW);
 787                                 ioctl(i->fd, PHONE_PLAY_START);
 788                                 i->lastformat = -1;
 789                         }
 790                 } else {
 791                         if (i->dialtone) {
 792                                 ast_mutex_lock(&usecnt_lock);
 793                                 usecnt--;
 794                                 ast_mutex_unlock(&usecnt_lock);
 795                                 ast_update_use_count();
 796                         }
 797                         memset(i->ext, 0, sizeof(i->ext));
 798                         if (i->cpt)
 799                         {
 800                                 ioctl(i->fd, PHONE_CPT_STOP);
 801                                 i->cpt = 0;
 802                         }
 803                         ioctl(i->fd, PHONE_PLAY_STOP);
 804                         ioctl(i->fd, PHONE_REC_STOP);
 805                         i->dialtone = 0;
 806                         i->lastformat = -1;
 807                 }
 808         }
 809         if (phonee.bits.pstn_ring) {
 810                 ast_verbose("Unit is ringing\n");
 811                 phone_new(i, AST_STATE_RING, i->context);
 812         }
 813         if (phonee.bits.caller_id)
 814                 ast_verbose("We have caller ID\n");
 815
 816
 817 }
 818
 819 static void *do_monitor(void *data)
 820 {
 821         fd_set rfds, efds;
 822         int n, res;
 823         struct phone_pvt *i;
 824         int tonepos = 0;
 825         /* The tone we're playing this round */
 826         struct timeval tv = {0,0};
 827         int dotone;
 828         /* This thread monitors all the frame relay interfaces which are not yet in use
 829            (and thus do not have a separate thread) indefinitely */
 830         /* From here on out, we die whenever asked */
 831         if (pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, NULL)) {
 832                 ast_log(LOG_WARNING, "Unable to set cancel type to asynchronous\n");
 833                 return NULL;
 834         }
 835         for(;;) {
 836                 /* Don't let anybody kill us right away.  Nobody should lock the interface list
 837                    and wait for the monitor list, but the other way around is okay. */
 838                 if (ast_mutex_lock(&monlock)) {
 839                         ast_log(LOG_ERROR, "Unable to grab monitor lock\n");
 840                         return NULL;
 841                 }
 842                 /* Lock the interface list */
 843                 if (ast_mutex_lock(&iflock)) {
 844                         ast_log(LOG_ERROR, "Unable to grab interface lock\n");
 845                         ast_mutex_unlock(&monlock);
 846                         return NULL;
 847                 }
 848                 /* Build the stuff we're going to select on, that is the socket of every
 849                    phone_pvt that does not have an associated owner channel */
 850                 n = -1;
 851                 FD_ZERO(&rfds);
 852                 FD_ZERO(&efds);
 853                 i = iflist;
 854                 dotone = 0;
 855                 while(i) {
 856                         if (FD_ISSET(i->fd, &rfds))
 857                                 ast_log(LOG_WARNING, "Descriptor %d appears twice (%s)?\n", i->fd, i->dev);
 858                         if (!i->owner) {
 859                                 /* This needs to be watched, as it lacks an owner */
 860                                 FD_SET(i->fd, &rfds);
 861                                 FD_SET(i->fd, &efds);
 862                                 if (i->fd > n)
 863                                         n = i->fd;
 864                                 if (i->dialtone) {
 865                                         /* Remember we're going to have to come back and play
 866                                            more dialtones */
 867                                         if (!tv.tv_usec && !tv.tv_sec) {
 868                                                 /* If we're due for a dialtone, play one */
 869                                                 if (write(i->fd, DialTone + tonepos, 240) != 240)
 870                                                         ast_log(LOG_WARNING, "Dial tone write error\n");
 871                                         }
 872                                         dotone++;
 873                                 }
 874                         }
 875
 876                         i = i->next;
 877                 }
 878                 /* Okay, now that we know what to do, release the interface lock */
 879                 ast_mutex_unlock(&iflock);
 880
 881                 /* And from now on, we're okay to be killed, so release the monitor lock as well */
 882                 ast_mutex_unlock(&monlock);
 883                 /* Wait indefinitely for something to happen */
 884                 if (dotone) {
 885                         /* If we're ready to recycle the time, set it to 30 ms */
 886                         tonepos += 240;
 887                         if (tonepos >= sizeof(DialTone))
 888                                         tonepos = 0;
 889                         if (!tv.tv_usec && !tv.tv_sec) {
 890                                 tv.tv_usec = 30000;
 891                                 tv.tv_sec = 0;
 892                         }
 893                         res = ast_select(n + 1, &rfds, NULL, &efds, &tv);
 894                 } else {
 895                         res = ast_select(n + 1, &rfds, NULL, &efds, NULL);
 896                         tv.tv_usec = 0;
 897                         tv.tv_sec = 0;
 898                         tonepos = 0;
 899                 }
 900                 /* Okay, select has finished.  Let's see what happened.  */
 901                 if (res < 0) {
 902                         ast_log(LOG_WARNING, "select return %d: %s\n", res, strerror(errno));
 903                         continue;
 904                 }
 905                 /* If there are no fd's changed, just continue, it's probably time
 906                    to play some more dialtones */
 907                 if (!res)
 908                         continue;
 909                 /* Alright, lock the interface list again, and let's look and see what has
 910                    happened */
 911                 if (ast_mutex_lock(&iflock)) {
 912                         ast_log(LOG_WARNING, "Unable to lock the interface list\n");
 913                         continue;
 914                 }
 915                 i = iflist;
 916                 while(i) {
 917                         if (FD_ISSET(i->fd, &rfds)) {
 918                                 if (i->owner) {
 919                                         ast_log(LOG_WARNING, "Whoa....  I'm owned but found (%d, %s)...\n", i->fd, i->dev);
 920                                         continue;
 921                                 }
 922                                 phone_mini_packet(i);
 923                         }
 924                         if (FD_ISSET(i->fd, &efds)) {
 925                                 if (i->owner) {
 926                                         ast_log(LOG_WARNING, "Whoa....  I'm owned but found (%d, %s)...\n", i->fd, i->dev);
 927                                         continue;
 928                                 }
 929                                 phone_check_exception(i);
 930                         }
 931                         i=i->next;
 932                 }
 933                 ast_mutex_unlock(&iflock);
 934         }
 935         /* Never reached */
 936         return NULL;
 937
 938 }
 939
 940 static int restart_monitor()
 941 {
 942         /* If we're supposed to be stopped -- stay stopped */
 943         if (monitor_thread == AST_PTHREADT_STOP)
 944                 return 0;
 945         if (ast_mutex_lock(&monlock)) {
 946                 ast_log(LOG_WARNING, "Unable to lock monitor\n");
 947                 return -1;
 948         }
 949         if (monitor_thread == pthread_self()) {
 950                 ast_mutex_unlock(&monlock);
 951                 ast_log(LOG_WARNING, "Cannot kill myself\n");
 952                 return -1;
 953         }
 954         if (monitor_thread != AST_PTHREADT_NULL) {
 955                 pthread_cancel(monitor_thread);
 956 #if 0
 957                 pthread_join(monitor_thread, NULL);
 958 #endif
 959         }
 960         /* Start a new monitor */
 961         if (pthread_create(&monitor_thread, NULL, do_monitor, NULL) < 0) {
 962                 ast_mutex_unlock(&monlock);
 963                 ast_log(LOG_ERROR, "Unable to start monitor thread.\n");
 964                 return -1;
 965         }
 966         ast_mutex_unlock(&monlock);
 967         return 0;
 968 }
 969
 970 static struct phone_pvt *mkif(char *iface, int mode, int txgain, int rxgain)
 971 {
 972         /* Make a phone_pvt structure for this interface */
 973         struct phone_pvt *tmp;
 974         int flags;
 975
 976         tmp = malloc(sizeof(struct phone_pvt));
 977         if (tmp) {
 978                 tmp->fd = open(iface, O_RDWR);
 979                 if (tmp->fd < 0) {
 980                         ast_log(LOG_WARNING, "Unable to open '%s'\n", iface);
 981                         free(tmp);
 982                         return NULL;
 983                 }
 984                 if (mode == MODE_FXO) {
 985                         if (ioctl(tmp->fd, IXJCTL_PORT, PORT_PSTN))
 986                                 ast_log(LOG_DEBUG, "Unable to set port to PSTN\n");
 987                 } else {
 988                         if (ioctl(tmp->fd, IXJCTL_PORT, PORT_POTS))
 989                                 ast_log(LOG_DEBUG, "Unable to set port to POTS\n");
 990                 }
 991                 ioctl(tmp->fd, PHONE_PLAY_STOP);
 992                 ioctl(tmp->fd, PHONE_REC_STOP);
 993                 ioctl(tmp->fd, PHONE_RING_STOP);
 994                 ioctl(tmp->fd, PHONE_CPT_STOP);
 995                 if (ioctl(tmp->fd, PHONE_PSTN_SET_STATE, PSTN_ON_HOOK))
 996                         ast_log(LOG_DEBUG, "ioctl(PHONE_PSTN_SET_STATE) failed on %s (%s)\n",iface, strerror(errno));
 997                 if (echocancel != AEC_OFF)
 998                         ioctl(tmp->fd, IXJCTL_AEC_START, echocancel);
 999                 if (silencesupression)
1000                         tmp->silencesupression = 1;
1001 #ifdef PHONE_VAD
1002                 ioctl(tmp->fd, PHONE_VAD, tmp->silencesupression);
1003 #endif
1004                 tmp->mode = mode;
1005                 flags = fcntl(tmp->fd, F_GETFL);
1006                 fcntl(tmp->fd, F_SETFL, flags | O_NONBLOCK);
1007                 tmp->owner = NULL;
1008                 tmp->lastformat = -1;
1009                 tmp->lastinput = -1;
1010                 tmp->ministate = 0;
1011                 memset(tmp->ext, 0, sizeof(tmp->ext));
1012                 strncpy(tmp->language, language, sizeof(tmp->language)-1);
1013                 strncpy(tmp->dev, iface, sizeof(tmp->dev)-1);
1014                 strncpy(tmp->context, context, sizeof(tmp->context)-1);
1015                 tmp->next = NULL;
1016                 tmp->obuflen = 0;
1017                 tmp->dialtone = 0;
1018                 tmp->cpt = 0;
1019                 strncpy(tmp->callerid, callerid, sizeof(tmp->callerid)-1);
1020                 tmp->txgain = txgain;
1021                 ioctl(tmp->fd, PHONE_PLAY_VOLUME, tmp->txgain);
1022                 tmp->rxgain = rxgain;
1023                 ioctl(tmp->fd, PHONE_REC_VOLUME, tmp->rxgain);
1024         }
1025         return tmp;
1026 }
1027
1028 static struct ast_channel *phone_request(char *type, int format, void *data)
1029 {
1030         int oldformat;
1031         struct phone_pvt *p;
1032         struct ast_channel *tmp = NULL;
1033         char *name = data;
1034
1035         oldformat = format;
1036         format &= (AST_FORMAT_G723_1 | AST_FORMAT_SLINEAR | AST_FORMAT_ULAW);
1037         if (!format) {
1038                 ast_log(LOG_NOTICE, "Asked to get a channel of unsupported format '%d'\n", oldformat);
1039                 return NULL;
1040         }
1041         /* Search for an unowned channel */
1042         if (ast_mutex_lock(&iflock)) {
1043                 ast_log(LOG_ERROR, "Unable to lock interface list???\n");
1044                 return NULL;
1045         }
1046         p = iflist;
1047         while(p) {
1048                 if (!strcmp(name, p->dev + 5)) {
1049                         if (!p->owner) {
1050                                 tmp = phone_new(p, AST_STATE_DOWN, p->context);
1051                                 break;
1052                         }
1053                 }
1054                 p = p->next;
1055         }
1056         ast_mutex_unlock(&iflock);
1057         restart_monitor();
1058         return tmp;
1059 }
1060
1061 /* parse gain value from config file */
1062 static int parse_gain_value(char *gain_type, char *value)
1063 {
1064         float gain;
1065
1066         /* try to scan number */
1067         if (sscanf(value, "%f", &gain) != 1)
1068         {
1069                 ast_log(LOG_ERROR, "Invalid %s value '%s' in '%s' config\n",
1070                         value, gain_type, config);
1071                 return DEFAULT_GAIN;
1072         }
1073
1074         /* multiplicate gain by 1.0 gain value */
1075         gain = gain * (float)DEFAULT_GAIN;
1076
1077         /* percentage? */
1078         if (value[strlen(value) - 1] == '%')
1079                 return (int)(gain / (float)100);
1080
1081         return (int)gain;
1082 }
1083
1084 static int __unload_module(void)
1085 {
1086         struct phone_pvt *p, *pl;
1087         /* First, take us out of the channel loop */
1088         ast_channel_unregister(type);
1089         if (!ast_mutex_lock(&iflock)) {
1090                 /* Hangup all interfaces if they have an owner */
1091                 p = iflist;
1092                 while(p) {
1093                         if (p->owner)
1094                                 ast_softhangup(p->owner, AST_SOFTHANGUP_APPUNLOAD);
1095                         p = p->next;
1096                 }
1097                 iflist = NULL;
1098                 ast_mutex_unlock(&iflock);
1099         } else {
1100                 ast_log(LOG_WARNING, "Unable to lock the monitor\n");
1101                 return -1;
1102         }
1103         if (!ast_mutex_lock(&monlock)) {
1104                 if (monitor_thread > AST_PTHREADT_NULL) {
1105                         pthread_cancel(monitor_thread);
1106                         pthread_join(monitor_thread, NULL);
1107                 }
1108                 monitor_thread = AST_PTHREADT_STOP;
1109                 ast_mutex_unlock(&monlock);
1110         } else {
1111                 ast_log(LOG_WARNING, "Unable to lock the monitor\n");
1112                 return -1;
1113         }
1114
1115         if (!ast_mutex_lock(&iflock)) {
1116                 /* Destroy all the interfaces and free their memory */
1117                 p = iflist;
1118                 while(p) {
1119                         /* Close the socket, assuming it's real */
1120                         if (p->fd > -1)
1121                                 close(p->fd);
1122                         pl = p;
1123                         p = p->next;
1124                         /* Free associated memory */
1125                         free(pl);
1126                 }
1127                 iflist = NULL;
1128                 ast_mutex_unlock(&iflock);
1129         } else {
1130                 ast_log(LOG_WARNING, "Unable to lock the monitor\n");
1131                 return -1;
1132         }
1133
1134         return 0;
1135 }
1136
1137 int unload_module(void)
1138 {
1139         return __unload_module();
1140 }
1141
1142 int load_module()
1143 {
1144         struct ast_config *cfg;
1145         struct ast_variable *v;
1146         struct phone_pvt *tmp;
1147         int mode = MODE_IMMEDIATE;
1148         int txgain = DEFAULT_GAIN, rxgain = DEFAULT_GAIN; /* default gain 1.0 */
1149         cfg = ast_load(config);
1150
1151         /* We *must* have a config file otherwise stop immediately */
1152         if (!cfg) {
1153                 ast_log(LOG_ERROR, "Unable to load config %s\n", config);
1154                 return -1;
1155         }
1156         if (ast_mutex_lock(&iflock)) {
1157                 /* It's a little silly to lock it, but we mind as well just to be sure */
1158                 ast_log(LOG_ERROR, "Unable to lock interface list???\n");
1159                 return -1;
1160         }
1161         v = ast_variable_browse(cfg, "interfaces");
1162         while(v) {
1163                 /* Create the interface list */
1164                 if (!strcasecmp(v->name, "device")) {
1165                                 tmp = mkif(v->value, mode, txgain, rxgain);
1166                                 if (tmp) {
1167                                         tmp->next = iflist;
1168                                         iflist = tmp;
1169
1170                                 } else {
1171                                         ast_log(LOG_ERROR, "Unable to register channel '%s'\n", v->value);
1172                                         ast_destroy(cfg);
1173                                         ast_mutex_unlock(&iflock);
1174                                         __unload_module();
1175                                         return -1;
1176                                 }
1177                 } else if (!strcasecmp(v->name, "silencesupression")) {
1178                         silencesupression = ast_true(v->value);
1179                 } else if (!strcasecmp(v->name, "language")) {
1180                         strncpy(language, v->value, sizeof(language)-1);
1181                 } else if (!strcasecmp(v->name, "callerid")) {
1182                         strncpy(callerid, v->value, sizeof(callerid)-1);
1183                 } else if (!strcasecmp(v->name, "mode")) {
1184                         if (!strncasecmp(v->value, "di", 2))
1185                                 mode = MODE_DIALTONE;
1186                         else if (!strncasecmp(v->value, "im", 2))
1187                                 mode = MODE_IMMEDIATE;
1188                         else if (!strncasecmp(v->value, "fx", 2))
1189                                 mode = MODE_FXO;
1190                         else
1191                                 ast_log(LOG_WARNING, "Unknown mode: %s\n", v->value);
1192                 } else if (!strcasecmp(v->name, "context")) {
1193                         strncpy(context, v->value, sizeof(context)-1);
1194                 } else if (!strcasecmp(v->name, "format")) {
1195                         if (!strcasecmp(v->value, "g723.1")) {
1196                                 prefformat = AST_FORMAT_G723_1;
1197                         } else if (!strcasecmp(v->value, "slinear")) {
1198                                 prefformat = AST_FORMAT_SLINEAR;
1199                         } else if (!strcasecmp(v->value, "ulaw")) {
1200                                 prefformat = AST_FORMAT_ULAW;
1201                         } else
1202                                 ast_log(LOG_WARNING, "Unknown format '%s'\n", v->value);
1203                 } else if (!strcasecmp(v->name, "echocancel")) {
1204                         if (!strcasecmp(v->value, "off")) {
1205                                 echocancel = AEC_OFF;
1206                         } else if (!strcasecmp(v->value, "low")) {
1207                                 echocancel = AEC_LOW;
1208                         } else if (!strcasecmp(v->value, "medium")) {
1209                                 echocancel = AEC_MED;
1210                         } else if (!strcasecmp(v->value, "high")) {
1211                                 echocancel = AEC_HIGH;
1212                         } else
1213                                 ast_log(LOG_WARNING, "Unknown echo cancellation '%s'\n", v->value);
1214                 } else if (!strcasecmp(v->name, "txgain")) {
1215                         txgain = parse_gain_value(v->name, v->value);
1216                 } else if (!strcasecmp(v->name, "rxgain")) {
1217                         rxgain = parse_gain_value(v->name, v->value);
1218                 }
1219                 v = v->next;
1220         }
1221         ast_mutex_unlock(&iflock);
1222         /* Make sure we can register our Adtranphone channel type */
1223         if (ast_channel_register(type, tdesc,
1224                          AST_FORMAT_G723_1 | AST_FORMAT_SLINEAR | AST_FORMAT_ULAW, phone_request)) {
1225                 ast_log(LOG_ERROR, "Unable to register channel class %s\n", type);
1226                 ast_destroy(cfg);
1227                 __unload_module();
1228                 return -1;
1229         }
1230         ast_destroy(cfg);
1231         /* And start the monitor for the first time */
1232         restart_monitor();
1233         return 0;
1234 }
1235
1236 int usecount()
1237 {
1238         int res;
1239         ast_mutex_lock(&usecnt_lock);
1240         res = usecnt;
1241         ast_mutex_unlock(&usecnt_lock);
1242         return res;
1243 }
1244
1245 char *description()
1246 {
1247         return desc;
1248 }
1249
1250 char *key()
1251 {
1252         return ASTERISK_GPL_KEY;
1253 }