channels/chan_phone.c

   1 /*
   2  * Asterisk -- An open source telephony toolkit.
   3  *
   4  * Copyright (C) 1999 - 2005, Digium, Inc.
   5  *
   6  * Mark Spencer <markster@digium.com>
   7  *
   8  * See http://www.asterisk.org for more information about
   9  * the Asterisk project. Please do not directly contact
  10  * any of the maintainers of this project for assistance;
  11  * the project provides a web site, mailing lists and IRC
  12  * channels for your use.
  13  *
  14  * This program is free software, distributed under the terms of
  15  * the GNU General Public License Version 2. See the LICENSE file
  16  * at the top of the source tree.
  17  */
  18
  19 /*! \file
  20  *
  21  * \brief Generic Linux Telephony Interface driver
  22  *
  23  * \author Mark Spencer <markster@digium.com>
  24  *
  25  * \ingroup channel_drivers
  26  */
  27
  28 #include <stdio.h>
  29 #include <string.h>
  30 #include <ctype.h>
  31 #include <sys/socket.h>
  32 #include <sys/time.h>
  33 #include <errno.h>
  34 #include <unistd.h>
  35 #include <stdlib.h>
  36 #include <arpa/inet.h>
  37 #include <fcntl.h>
  38 #include <sys/ioctl.h>
  39 #include <signal.h>
  40 #include <linux/telephony.h>
  41 /* Still use some IXJ specific stuff */
  42 #include <linux/version.h>
  43 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
  44 # include <linux/compiler.h>
  45 #endif
  46 #include <linux/ixjuser.h>
  47
  48 #include "asterisk.h"
  49
  50 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
  51
  52 #include "asterisk/lock.h"
  53 #include "asterisk/channel.h"
  54 #include "asterisk/config.h"
  55 #include "asterisk/logger.h"
  56 #include "asterisk/module.h"
  57 #include "asterisk/pbx.h"
  58 #include "asterisk/options.h"
  59 #include "asterisk/utils.h"
  60 #include "asterisk/callerid.h"
  61 #include "asterisk/causes.h"
  62 #include "asterisk/stringfields.h"
  63
  64 #include "DialTone.h"
  65
  66 #ifdef QTI_PHONEJACK_TJ_PCI     /* check for the newer quicknet driver v.3.1.0 which has this symbol */
  67 #define QNDRV_VER 310
  68 #else
  69 #define QNDRV_VER 100
  70 #endif
  71
  72 #if QNDRV_VER > 100
  73 #ifdef __linux__
  74 #define IXJ_PHONE_RING_START(x) ioctl(p->fd, PHONE_RING_START, &x);
  75 #else /* FreeBSD and others */
  76 #define IXJ_PHONE_RING_START(x) ioctl(p->fd, PHONE_RING_START, x);
  77 #endif /* __linux__ */
  78 #else   /* older driver */
  79 #define IXJ_PHONE_RING_START(x) ioctl(p->fd, PHONE_RING_START, &x);
  80 #endif
  81
  82 #define DEFAULT_CALLER_ID "Unknown"
  83 #define PHONE_MAX_BUF 480
  84 #define DEFAULT_GAIN 0x100
  85
  86 static const char desc[] = "Linux Telephony API Support";
  87 static const char tdesc[] = "Standard Linux Telephony API Driver";
  88 static const char config[] = "phone.conf";
  89
  90 /* Default context for dialtone mode */
  91 static char context[AST_MAX_EXTENSION] = "default";
  92
  93 /* Default language */
  94 static char language[MAX_LANGUAGE] = "";
  95 static int usecnt =0;
  96
  97 static int echocancel = AEC_OFF;
  98
  99 static int silencesupression = 0;
 100
 101 static int prefformat = AST_FORMAT_G723_1 | AST_FORMAT_SLINEAR | AST_FORMAT_ULAW;
 102
 103 AST_MUTEX_DEFINE_STATIC(usecnt_lock);
 104
 105 /* Protect the interface list (of phone_pvt's) */
 106 AST_MUTEX_DEFINE_STATIC(iflock);
 107
 108 /* Protect the monitoring thread, so only one process can kill or start it, and not
 109    when it's doing something critical. */
 110 AST_MUTEX_DEFINE_STATIC(monlock);
 111
 112 /* Boolean value whether the monitoring thread shall continue. */
 113 static unsigned int monitor;
 114
 115 /* This is the thread for the monitor which checks for input on the channels
 116    which are not currently in use.  */
 117 static pthread_t monitor_thread = AST_PTHREADT_NULL;
 118
 119 static int restart_monitor(void);
 120
 121 /* The private structures of the Phone Jack channels are linked for
 122    selecting outgoing channels */
 123
 124 #define MODE_DIALTONE   1
 125 #define MODE_IMMEDIATE  2
 126 #define MODE_FXO                3
 127 #define MODE_FXS        4
 128
 129 static struct phone_pvt {
 130         int fd;                                                 /* Raw file descriptor for this device */
 131         struct ast_channel *owner;              /* Channel we belong to, possibly NULL */
 132         int mode;                                               /* Is this in the  */
 133         int lastformat;                                 /* Last output format */
 134         int lastinput;                                  /* Last input format */
 135         int ministate;                                  /* Miniature state, for dialtone mode */
 136         char dev[256];                                  /* Device name */
 137         struct phone_pvt *next;                 /* Next channel in list */
 138         struct ast_frame fr;                    /* Frame */
 139         char offset[AST_FRIENDLY_OFFSET];
 140         char buf[PHONE_MAX_BUF];                                        /* Static buffer for reading frames */
 141         int obuflen;
 142         int dialtone;
 143         int txgain, rxgain;             /* gain control for playing, recording  */
 144                                                                         /* 0x100 - 1.0, 0x200 - 2.0, 0x80 - 0.5 */
 145         int cpt;                                                /* Call Progress Tone playing? */
 146         int silencesupression;
 147         char context[AST_MAX_EXTENSION];
 148         char obuf[PHONE_MAX_BUF * 2];
 149         char ext[AST_MAX_EXTENSION];
 150         char language[MAX_LANGUAGE];
 151         char cid_num[AST_MAX_EXTENSION];
 152         char cid_name[AST_MAX_EXTENSION];
 153 } *iflist = NULL;
 154
 155 static char cid_num[AST_MAX_EXTENSION];
 156 static char cid_name[AST_MAX_EXTENSION];
 157
 158 static struct ast_channel *phone_request(const char *type, int format, void *data, int *cause);
 159 static int phone_digit(struct ast_channel *ast, char digit);
 160 static int phone_call(struct ast_channel *ast, char *dest, int timeout);
 161 static int phone_hangup(struct ast_channel *ast);
 162 static int phone_answer(struct ast_channel *ast);
 163 static struct ast_frame *phone_read(struct ast_channel *ast);
 164 static int phone_write(struct ast_channel *ast, struct ast_frame *frame);
 165 static struct ast_frame *phone_exception(struct ast_channel *ast);
 166 static int phone_send_text(struct ast_channel *ast, const char *text);
 167 static int phone_fixup(struct ast_channel *old, struct ast_channel *new);
 168 static int phone_indicate(struct ast_channel *chan, int condition);
 169
 170 static const struct ast_channel_tech phone_tech = {
 171         .type = "Phone",
 172         .description = tdesc,
 173         .capabilities = AST_FORMAT_G723_1 | AST_FORMAT_SLINEAR | AST_FORMAT_ULAW,
 174         .requester = phone_request,
 175         .send_digit = phone_digit,
 176         .call = phone_call,
 177         .hangup = phone_hangup,
 178         .answer = phone_answer,
 179         .read = phone_read,
 180         .write = phone_write,
 181         .exception = phone_exception,
 182         .indicate = phone_indicate,
 183         .fixup = phone_fixup
 184 };
 185
 186 static struct ast_channel_tech phone_tech_fxs = {
 187         .type = "Phone",
 188         .description = tdesc,
 189         .requester = phone_request,
 190         .send_digit = phone_digit,
 191         .call = phone_call,
 192         .hangup = phone_hangup,
 193         .answer = phone_answer,
 194         .read = phone_read,
 195         .write = phone_write,
 196         .exception = phone_exception,
 197         .write_video = phone_write,
 198         .send_text = phone_send_text,
 199         .indicate = phone_indicate,
 200         .fixup = phone_fixup
 201 };
 202
 203 static struct ast_channel_tech *cur_tech;
 204
 205 static int phone_indicate(struct ast_channel *chan, int condition)
 206 {
 207         struct phone_pvt *p = chan->tech_pvt;
 208         int res=-1;
 209         ast_log(LOG_DEBUG, "Requested indication %d on channel %s\n", condition, chan->name);
 210         switch(condition) {
 211                 case AST_CONTROL_FLASH:
 212                         ioctl(p->fd, IXJCTL_PSTN_SET_STATE, PSTN_ON_HOOK);
 213                         usleep(320000);
 214                         ioctl(p->fd, IXJCTL_PSTN_SET_STATE, PSTN_OFF_HOOK);
 215                         p->lastformat = -1;
 216                         res = 0;
 217                         break;
 218                 default:
 219                         ast_log(LOG_WARNING, "Condition %d is not supported on channel %s\n", condition, chan->name);
 220         }
 221         return res;
 222 }
 223
 224 static int phone_fixup(struct ast_channel *old, struct ast_channel *new)
 225 {
 226         struct phone_pvt *pvt = old->tech_pvt;
 227         if (pvt && pvt->owner == old)
 228                 pvt->owner = new;
 229         return 0;
 230 }
 231
 232 static int phone_digit(struct ast_channel *ast, char digit)
 233 {
 234         struct phone_pvt *p;
 235         int outdigit;
 236         p = ast->tech_pvt;
 237         ast_log(LOG_NOTICE, "Dialed %c\n", digit);
 238         switch(digit) {
 239         case '0':
 240         case '1':
 241         case '2':
 242         case '3':
 243         case '4':
 244         case '5':
 245         case '6':
 246         case '7':
 247         case '8':
 248         case '9':
 249                 outdigit = digit - '0';
 250                 break;
 251         case '*':
 252                 outdigit = 11;
 253                 break;
 254         case '#':
 255                 outdigit = 12;
 256                 break;
 257         case 'f':       /*flash*/
 258         case 'F':
 259                 ioctl(p->fd, IXJCTL_PSTN_SET_STATE, PSTN_ON_HOOK);
 260                 usleep(320000);
 261                 ioctl(p->fd, IXJCTL_PSTN_SET_STATE, PSTN_OFF_HOOK);
 262                 p->lastformat = -1;
 263                 return 0;
 264         default:
 265                 ast_log(LOG_WARNING, "Unknown digit '%c'\n", digit);
 266                 return -1;
 267         }
 268         ast_log(LOG_NOTICE, "Dialed %d\n", outdigit);
 269         ioctl(p->fd, PHONE_PLAY_TONE, outdigit);
 270         p->lastformat = -1;
 271         return 0;
 272 }
 273
 274 static int phone_call(struct ast_channel *ast, char *dest, int timeout)
 275 {
 276         struct phone_pvt *p;
 277
 278         PHONE_CID cid;
 279         time_t UtcTime;
 280         struct tm tm;
 281         int start;
 282
 283         time(&UtcTime);
 284         localtime_r(&UtcTime,&tm);
 285
 286         memset(&cid, 0, sizeof(PHONE_CID));
 287         if(&tm != NULL) {
 288                 snprintf(cid.month, sizeof(cid.month), "%02d",(tm.tm_mon + 1));
 289                 snprintf(cid.day, sizeof(cid.day),     "%02d", tm.tm_mday);
 290                 snprintf(cid.hour, sizeof(cid.hour),   "%02d", tm.tm_hour);
 291                 snprintf(cid.min, sizeof(cid.min),     "%02d", tm.tm_min);
 292         }
 293         /* the standard format of ast->callerid is:  "name" <number>, but not always complete */
 294         if (ast_strlen_zero(ast->cid.cid_name))
 295                 strncpy(cid.name, DEFAULT_CALLER_ID, sizeof(cid.name) - 1);
 296         else
 297                 strncpy(cid.name, ast->cid.cid_name, sizeof(cid.name) - 1);
 298
 299         if (ast->cid.cid_num)
 300                 strncpy(cid.number, ast->cid.cid_num, sizeof(cid.number) - 1);
 301
 302         p = ast->tech_pvt;
 303
 304         if ((ast->_state != AST_STATE_DOWN) && (ast->_state != AST_STATE_RESERVED)) {
 305                 ast_log(LOG_WARNING, "phone_call called on %s, neither down nor reserved\n", ast->name);
 306                 return -1;
 307         }
 308         if (option_debug)
 309                 ast_log(LOG_DEBUG, "Ringing %s on %s (%d)\n", dest, ast->name, ast->fds[0]);
 310
 311         start = IXJ_PHONE_RING_START(cid);
 312         if (start == -1)
 313                 return -1;
 314
 315         if (p->mode == MODE_FXS) {
 316                 char *digit = strchr(dest, '/');
 317                 if (digit)
 318                 {
 319                   digit++;
 320                   while (*digit)
 321                     phone_digit(ast, *digit++);
 322                 }
 323         }
 324
 325         ast_setstate(ast, AST_STATE_RINGING);
 326         ast_queue_control(ast, AST_CONTROL_RINGING);
 327         return 0;
 328 }
 329
 330 static int phone_hangup(struct ast_channel *ast)
 331 {
 332         struct phone_pvt *p;
 333         p = ast->tech_pvt;
 334         if (option_debug)
 335                 ast_log(LOG_DEBUG, "phone_hangup(%s)\n", ast->name);
 336         if (!ast->tech_pvt) {
 337                 ast_log(LOG_WARNING, "Asked to hangup channel not connected\n");
 338                 return 0;
 339         }
 340         /* XXX Is there anything we can do to really hang up except stop recording? */
 341         ast_setstate(ast, AST_STATE_DOWN);
 342         if (ioctl(p->fd, PHONE_REC_STOP))
 343                 ast_log(LOG_WARNING, "Failed to stop recording\n");
 344         if (ioctl(p->fd, PHONE_PLAY_STOP))
 345                 ast_log(LOG_WARNING, "Failed to stop playing\n");
 346         if (ioctl(p->fd, PHONE_RING_STOP))
 347                 ast_log(LOG_WARNING, "Failed to stop ringing\n");
 348         if (ioctl(p->fd, PHONE_CPT_STOP))
 349                 ast_log(LOG_WARNING, "Failed to stop sounds\n");
 350
 351         /* If it's an FXO, hang them up */
 352         if (p->mode == MODE_FXO) {
 353                 if (ioctl(p->fd, PHONE_PSTN_SET_STATE, PSTN_ON_HOOK))
 354                         ast_log(LOG_DEBUG, "ioctl(PHONE_PSTN_SET_STATE) failed on %s (%s)\n",ast->name, strerror(errno));
 355         }
 356
 357         /* If they're off hook, give a busy signal */
 358         if (ioctl(p->fd, PHONE_HOOKSTATE)) {
 359                 if (option_debug)
 360                         ast_log(LOG_DEBUG, "Got hunghup, giving busy signal\n");
 361                 ioctl(p->fd, PHONE_BUSY);
 362                 p->cpt = 1;
 363         }
 364         p->lastformat = -1;
 365         p->lastinput = -1;
 366         p->ministate = 0;
 367         p->obuflen = 0;
 368         p->dialtone = 0;
 369         memset(p->ext, 0, sizeof(p->ext));
 370         ((struct phone_pvt *)(ast->tech_pvt))->owner = NULL;
 371         ast_mutex_lock(&usecnt_lock);
 372         usecnt--;
 373         if (usecnt < 0)
 374                 ast_log(LOG_WARNING, "Usecnt < 0???\n");
 375         ast_mutex_unlock(&usecnt_lock);
 376         ast_update_use_count();
 377         if (option_verbose > 2)
 378                 ast_verbose( VERBOSE_PREFIX_3 "Hungup '%s'\n", ast->name);
 379         ast->tech_pvt = NULL;
 380         ast_setstate(ast, AST_STATE_DOWN);
 381         restart_monitor();
 382         return 0;
 383 }
 384
 385 static int phone_setup(struct ast_channel *ast)
 386 {
 387         struct phone_pvt *p;
 388         p = ast->tech_pvt;
 389         ioctl(p->fd, PHONE_CPT_STOP);
 390         /* Nothing to answering really, just start recording */
 391         if (ast->rawreadformat == AST_FORMAT_G723_1) {
 392                 /* Prefer g723 */
 393                 ioctl(p->fd, PHONE_REC_STOP);
 394                 if (p->lastinput != AST_FORMAT_G723_1) {
 395                         p->lastinput = AST_FORMAT_G723_1;
 396                         if (ioctl(p->fd, PHONE_REC_CODEC, G723_63)) {
 397                                 ast_log(LOG_WARNING, "Failed to set codec to g723.1\n");
 398                                 return -1;
 399                         }
 400                 }
 401         } else if (ast->rawreadformat == AST_FORMAT_SLINEAR) {
 402                 ioctl(p->fd, PHONE_REC_STOP);
 403                 if (p->lastinput != AST_FORMAT_SLINEAR) {
 404                         p->lastinput = AST_FORMAT_SLINEAR;
 405                         if (ioctl(p->fd, PHONE_REC_CODEC, LINEAR16)) {
 406                                 ast_log(LOG_WARNING, "Failed to set codec to signed linear 16\n");
 407                                 return -1;
 408                         }
 409                 }
 410         } else if (ast->rawreadformat == AST_FORMAT_ULAW) {
 411                 ioctl(p->fd, PHONE_REC_STOP);
 412                 if (p->lastinput != AST_FORMAT_ULAW) {
 413                         p->lastinput = AST_FORMAT_ULAW;
 414                         if (ioctl(p->fd, PHONE_REC_CODEC, ULAW)) {
 415                                 ast_log(LOG_WARNING, "Failed to set codec to uLaw\n");
 416                                 return -1;
 417                         }
 418                 }
 419         } else if (p->mode == MODE_FXS) {
 420                 ioctl(p->fd, PHONE_REC_STOP);
 421                 if (p->lastinput != ast->rawreadformat) {
 422                         p->lastinput = ast->rawreadformat;
 423                         if (ioctl(p->fd, PHONE_REC_CODEC, ast->rawreadformat)) {
 424                                 ast_log(LOG_WARNING, "Failed to set codec to %d\n",
 425                                         ast->rawreadformat);
 426                                 return -1;
 427                         }
 428                 }
 429         } else {
 430                 ast_log(LOG_WARNING, "Can't do format %s\n", ast_getformatname(ast->rawreadformat));
 431                 return -1;
 432         }
 433         if (ioctl(p->fd, PHONE_REC_START)) {
 434                 ast_log(LOG_WARNING, "Failed to start recording\n");
 435                 return -1;
 436         }
 437         /* set the DTMF times (the default is too short) */
 438         ioctl(p->fd, PHONE_SET_TONE_ON_TIME, 300);
 439         ioctl(p->fd, PHONE_SET_TONE_OFF_TIME, 200);
 440         return 0;
 441 }
 442
 443 static int phone_answer(struct ast_channel *ast)
 444 {
 445         struct phone_pvt *p;
 446         p = ast->tech_pvt;
 447         /* In case it's a LineJack, take it off hook */
 448         if (p->mode == MODE_FXO) {
 449                 if (ioctl(p->fd, PHONE_PSTN_SET_STATE, PSTN_OFF_HOOK))
 450                         ast_log(LOG_DEBUG, "ioctl(PHONE_PSTN_SET_STATE) failed on %s (%s)\n", ast->name, strerror(errno));
 451                 else
 452                         ast_log(LOG_DEBUG, "Took linejack off hook\n");
 453         }
 454         phone_setup(ast);
 455         if (option_debug)
 456                 ast_log(LOG_DEBUG, "phone_answer(%s)\n", ast->name);
 457         ast->rings = 0;
 458         ast_setstate(ast, AST_STATE_UP);
 459         return 0;
 460 }
 461
 462 #if 0
 463 static char phone_2digit(char c)
 464 {
 465         if (c == 12)
 466                 return '#';
 467         else if (c == 11)
 468                 return '*';
 469         else if ((c < 10) && (c >= 0))
 470                 return '0' + c - 1;
 471         else
 472                 return '?';
 473 }
 474 #endif
 475
 476 static struct ast_frame  *phone_exception(struct ast_channel *ast)
 477 {
 478         int res;
 479         union telephony_exception phonee;
 480         struct phone_pvt *p = ast->tech_pvt;
 481         char digit;
 482
 483         /* Some nice norms */
 484         p->fr.datalen = 0;
 485         p->fr.samples = 0;
 486         p->fr.data =  NULL;
 487         p->fr.src = "Phone";
 488         p->fr.offset = 0;
 489         p->fr.mallocd=0;
 490         p->fr.delivery = ast_tv(0,0);
 491
 492         phonee.bytes = ioctl(p->fd, PHONE_EXCEPTION);
 493         if (phonee.bits.dtmf_ready)  {
 494                 if (option_debug)
 495                         ast_log(LOG_DEBUG, "phone_exception(): DTMF\n");
 496
 497                 /* We've got a digit -- Just handle this nicely and easily */
 498                 digit =  ioctl(p->fd, PHONE_GET_DTMF_ASCII);
 499                 p->fr.subclass = digit;
 500                 p->fr.frametype = AST_FRAME_DTMF;
 501                 return &p->fr;
 502         }
 503         if (phonee.bits.hookstate) {
 504                 if (option_debug)
 505                         ast_log(LOG_DEBUG, "Hookstate changed\n");
 506                 res = ioctl(p->fd, PHONE_HOOKSTATE);
 507                 /* See if we've gone on hook, if so, notify by returning NULL */
 508                 if (option_debug)
 509                         ast_log(LOG_DEBUG, "New hookstate: %d\n", res);
 510                 if (!res && (p->mode != MODE_FXO))
 511                         return NULL;
 512                 else {
 513                         if (ast->_state == AST_STATE_RINGING) {
 514                                 /* They've picked up the phone */
 515                                 p->fr.frametype = AST_FRAME_CONTROL;
 516                                 p->fr.subclass = AST_CONTROL_ANSWER;
 517                                 phone_setup(ast);
 518                                 ast_setstate(ast, AST_STATE_UP);
 519                                 return &p->fr;
 520                         }  else
 521                                 ast_log(LOG_WARNING, "Got off hook in weird state %d\n", ast->_state);
 522                 }
 523         }
 524 #if 1
 525         if (phonee.bits.pstn_ring)
 526                 ast_verbose("Unit is ringing\n");
 527         if (phonee.bits.caller_id) {
 528                 ast_verbose("We have caller ID\n");
 529         }
 530         if (phonee.bits.pstn_wink)
 531                 ast_verbose("Detected Wink\n");
 532 #endif
 533         /* Strange -- nothing there.. */
 534         p->fr.frametype = AST_FRAME_NULL;
 535         p->fr.subclass = 0;
 536         return &p->fr;
 537 }
 538
 539 static struct ast_frame  *phone_read(struct ast_channel *ast)
 540 {
 541         int res;
 542         struct phone_pvt *p = ast->tech_pvt;
 543
 544
 545         /* Some nice norms */
 546         p->fr.datalen = 0;
 547         p->fr.samples = 0;
 548         p->fr.data =  NULL;
 549         p->fr.src = "Phone";
 550         p->fr.offset = 0;
 551         p->fr.mallocd=0;
 552         p->fr.delivery = ast_tv(0,0);
 553
 554         /* Try to read some data... */
 555         CHECK_BLOCKING(ast);
 556         res = read(p->fd, p->buf, PHONE_MAX_BUF);
 557         ast_clear_flag(ast, AST_FLAG_BLOCKING);
 558         if (res < 0) {
 559 #if 0
 560                 if (errno == EAGAIN) {
 561                         ast_log(LOG_WARNING, "Null frame received\n");
 562                         p->fr.frametype = AST_FRAME_NULL;
 563                         p->fr.subclass = 0;
 564                         return &p->fr;
 565                 }
 566 #endif
 567                 ast_log(LOG_WARNING, "Error reading: %s\n", strerror(errno));
 568                 return NULL;
 569         }
 570         p->fr.data = p->buf;
 571         if (p->mode != MODE_FXS)
 572         switch(p->buf[0] & 0x3) {
 573         case '0':
 574         case '1':
 575                 /* Normal */
 576                 break;
 577         case '2':
 578         case '3':
 579                 /* VAD/CNG, only send two words */
 580                 res = 4;
 581                 break;
 582         }
 583         p->fr.samples = 240;
 584         p->fr.datalen = res;
 585         p->fr.frametype = p->lastinput <= AST_FORMAT_MAX_AUDIO ?
 586                           AST_FRAME_VOICE :
 587                           p->lastinput <= AST_FORMAT_PNG ? AST_FRAME_IMAGE
 588                           : AST_FRAME_VIDEO;
 589         p->fr.subclass = p->lastinput;
 590         p->fr.offset = AST_FRIENDLY_OFFSET;
 591         /* Byteswap from little-endian to native-endian */
 592         if (p->fr.subclass == AST_FORMAT_SLINEAR)
 593                 ast_frame_byteswap_le(&p->fr);
 594         return &p->fr;
 595 }
 596
 597 static int phone_write_buf(struct phone_pvt *p, const char *buf, int len, int frlen, int swap)
 598 {
 599         int res;
 600         /* Store as much of the buffer as we can, then write fixed frames */
 601         int space = sizeof(p->obuf) - p->obuflen;
 602         /* Make sure we have enough buffer space to store the frame */
 603         if (space < len)
 604                 len = space;
 605         if (swap)
 606                 ast_swapcopy_samples(p->obuf+p->obuflen, buf, len/2);
 607         else
 608                 memcpy(p->obuf + p->obuflen, buf, len);
 609         p->obuflen += len;
 610         while(p->obuflen > frlen) {
 611                 res = write(p->fd, p->obuf, frlen);
 612                 if (res != frlen) {
 613                         if (res < 1) {
 614 /*
 615  * Card is in non-blocking mode now and it works well now, but there are
 616  * lot of messages like this. So, this message is temporarily disabled.
 617  */
 618                                 return 0;
 619                         } else {
 620                                 ast_log(LOG_WARNING, "Only wrote %d of %d bytes\n", res, frlen);
 621                         }
 622                 }
 623                 p->obuflen -= frlen;
 624                 /* Move memory if necessary */
 625                 if (p->obuflen)
 626                         memmove(p->obuf, p->obuf + frlen, p->obuflen);
 627         }
 628         return len;
 629 }
 630
 631 static int phone_send_text(struct ast_channel *ast, const char *text)
 632 {
 633     int length = strlen(text);
 634     return phone_write_buf(ast->tech_pvt, text, length, length, 0) ==
 635            length ? 0 : -1;
 636 }
 637
 638 static int phone_write(struct ast_channel *ast, struct ast_frame *frame)
 639 {
 640         struct phone_pvt *p = ast->tech_pvt;
 641         int res;
 642         int maxfr=0;
 643         char *pos;
 644         int sofar;
 645         int expected;
 646         int codecset = 0;
 647         char tmpbuf[4];
 648         /* Write a frame of (presumably voice) data */
 649         if (frame->frametype != AST_FRAME_VOICE && p->mode != MODE_FXS) {
 650                 if (frame->frametype != AST_FRAME_IMAGE)
 651                         ast_log(LOG_WARNING, "Don't know what to do with  frame type '%d'\n", frame->frametype);
 652                 return 0;
 653         }
 654         if (!(frame->subclass &
 655                 (AST_FORMAT_G723_1 | AST_FORMAT_SLINEAR | AST_FORMAT_ULAW)) &&
 656             p->mode != MODE_FXS) {
 657                 ast_log(LOG_WARNING, "Cannot handle frames in %d format\n", frame->subclass);
 658                 return -1;
 659         }
 660 #if 0
 661         /* If we're not in up mode, go into up mode now */
 662         if (ast->_state != AST_STATE_UP) {
 663                 ast_setstate(ast, AST_STATE_UP);
 664                 phone_setup(ast);
 665         }
 666 #else
 667         if (ast->_state != AST_STATE_UP) {
 668                 /* Don't try tos end audio on-hook */
 669                 return 0;
 670         }
 671 #endif
 672         if (frame->subclass == AST_FORMAT_G723_1) {
 673                 if (p->lastformat != AST_FORMAT_G723_1) {
 674                         ioctl(p->fd, PHONE_PLAY_STOP);
 675                         ioctl(p->fd, PHONE_REC_STOP);
 676                         if (ioctl(p->fd, PHONE_PLAY_CODEC, G723_63)) {
 677                                 ast_log(LOG_WARNING, "Unable to set G723.1 mode\n");
 678                                 return -1;
 679                         }
 680                         if (ioctl(p->fd, PHONE_REC_CODEC, G723_63)) {
 681                                 ast_log(LOG_WARNING, "Unable to set G723.1 mode\n");
 682                                 return -1;
 683                         }
 684                         p->lastformat = AST_FORMAT_G723_1;
 685                         p->lastinput = AST_FORMAT_G723_1;
 686                         /* Reset output buffer */
 687                         p->obuflen = 0;
 688                         codecset = 1;
 689                 }
 690                 if (frame->datalen > 24) {
 691                         ast_log(LOG_WARNING, "Frame size too large for G.723.1 (%d bytes)\n", frame->datalen);
 692                         return -1;
 693                 }
 694                 maxfr = 24;
 695         } else if (frame->subclass == AST_FORMAT_SLINEAR) {
 696                 if (p->lastformat != AST_FORMAT_SLINEAR) {
 697                         ioctl(p->fd, PHONE_PLAY_STOP);
 698                         ioctl(p->fd, PHONE_REC_STOP);
 699                         if (ioctl(p->fd, PHONE_PLAY_CODEC, LINEAR16)) {
 700                                 ast_log(LOG_WARNING, "Unable to set 16-bit linear mode\n");
 701                                 return -1;
 702                         }
 703                         if (ioctl(p->fd, PHONE_REC_CODEC, LINEAR16)) {
 704                                 ast_log(LOG_WARNING, "Unable to set 16-bit linear mode\n");
 705                                 return -1;
 706                         }
 707                         p->lastformat = AST_FORMAT_SLINEAR;
 708                         p->lastinput = AST_FORMAT_SLINEAR;
 709                         codecset = 1;
 710                         /* Reset output buffer */
 711                         p->obuflen = 0;
 712                 }
 713                 maxfr = 480;
 714         } else if (frame->subclass == AST_FORMAT_ULAW) {
 715                 if (p->lastformat != AST_FORMAT_ULAW) {
 716                         ioctl(p->fd, PHONE_PLAY_STOP);
 717                         ioctl(p->fd, PHONE_REC_STOP);
 718                         if (ioctl(p->fd, PHONE_PLAY_CODEC, ULAW)) {
 719                                 ast_log(LOG_WARNING, "Unable to set uLaw mode\n");
 720                                 return -1;
 721                         }
 722                         if (ioctl(p->fd, PHONE_REC_CODEC, ULAW)) {
 723                                 ast_log(LOG_WARNING, "Unable to set uLaw mode\n");
 724                                 return -1;
 725                         }
 726                         p->lastformat = AST_FORMAT_ULAW;
 727                         p->lastinput = AST_FORMAT_ULAW;
 728                         codecset = 1;
 729                         /* Reset output buffer */
 730                         p->obuflen = 0;
 731                 }
 732                 maxfr = 240;
 733         } else {
 734                 if (p->lastformat != frame->subclass) {
 735                         ioctl(p->fd, PHONE_PLAY_STOP);
 736                         ioctl(p->fd, PHONE_REC_STOP);
 737                         if (ioctl(p->fd, PHONE_PLAY_CODEC, frame->subclass)) {
 738                                 ast_log(LOG_WARNING, "Unable to set %d mode\n",
 739                                         frame->subclass);
 740                                 return -1;
 741                         }
 742                         if (ioctl(p->fd, PHONE_REC_CODEC, frame->subclass)) {
 743                                 ast_log(LOG_WARNING, "Unable to set %d mode\n",
 744                                         frame->subclass);
 745                                 return -1;
 746                         }
 747                         p->lastformat = frame->subclass;
 748                         p->lastinput = frame->subclass;
 749                         codecset = 1;
 750                         /* Reset output buffer */
 751                         p->obuflen = 0;
 752                 }
 753                 maxfr = 480;
 754         }
 755         if (codecset) {
 756                 ioctl(p->fd, PHONE_REC_DEPTH, 3);
 757                 ioctl(p->fd, PHONE_PLAY_DEPTH, 3);
 758                 if (ioctl(p->fd, PHONE_PLAY_START)) {
 759                         ast_log(LOG_WARNING, "Failed to start playback\n");
 760                         return -1;
 761                 }
 762                 if (ioctl(p->fd, PHONE_REC_START)) {
 763                         ast_log(LOG_WARNING, "Failed to start recording\n");
 764                         return -1;
 765                 }
 766         }
 767         /* If we get here, we have a frame of Appropriate data */
 768         sofar = 0;
 769         pos = frame->data;
 770         while(sofar < frame->datalen) {
 771                 /* Write in no more than maxfr sized frames */
 772                 expected = frame->datalen - sofar;
 773                 if (maxfr < expected)
 774                         expected = maxfr;
 775                 /* XXX Internet Phone Jack does not handle the 4-byte VAD frame properly! XXX
 776                    we have to pad it to 24 bytes still.  */
 777                 if (frame->datalen == 4) {
 778                         if (p->silencesupression) {
 779                                 memset(tmpbuf + 4, 0, sizeof(tmpbuf) - 4);
 780                                 memcpy(tmpbuf, frame->data, 4);
 781                                 expected = 24;
 782                                 res = phone_write_buf(p, tmpbuf, expected, maxfr, 0);
 783                         }
 784                         res = 4;
 785                         expected=4;
 786                 } else {
 787                         int swap = 0;
 788 #if __BYTE_ORDER == __BIG_ENDIAN
 789                         if (frame->subclass == AST_FORMAT_SLINEAR)
 790                                 swap = 1; /* Swap big-endian samples to little-endian as we copy */
 791 #endif
 792                         res = phone_write_buf(p, pos, expected, maxfr, swap);
 793                 }
 794                 if (res != expected) {
 795                         if ((errno != EAGAIN) && (errno != EINTR)) {
 796                                 if (res < 0)
 797                                         ast_log(LOG_WARNING, "Write returned error (%s)\n", strerror(errno));
 798         /*
 799          * Card is in non-blocking mode now and it works well now, but there are
 800          * lot of messages like this. So, this message is temporarily disabled.
 801          */
 802 #if 0
 803                                 else
 804                                         ast_log(LOG_WARNING, "Only wrote %d of %d bytes\n", res, frame->datalen);
 805 #endif
 806                                 return -1;
 807                         } else /* Pretend it worked */
 808                                 res = expected;
 809                 }
 810                 sofar += res;
 811                 pos += res;
 812         }
 813         return 0;
 814 }
 815
 816 static struct ast_channel *phone_new(struct phone_pvt *i, int state, char *context)
 817 {
 818         struct ast_channel *tmp;
 819         struct phone_codec_data codec;
 820         tmp = ast_channel_alloc(1);
 821         if (tmp) {
 822                 tmp->tech = cur_tech;
 823                 ast_string_field_build(tmp, name, "Phone/%s", i->dev + 5);
 824                 tmp->fds[0] = i->fd;
 825                 /* XXX Switching formats silently causes kernel panics XXX */
 826                 if (i->mode == MODE_FXS &&
 827                     ioctl(i->fd, PHONE_QUERY_CODEC, &codec) == 0) {
 828                         if (codec.type == LINEAR16)
 829                                 tmp->nativeformats =
 830                                 tmp->rawreadformat =
 831                                 tmp->rawwriteformat =
 832                                 AST_FORMAT_SLINEAR;
 833                         else {
 834                                 tmp->nativeformats =
 835                                 tmp->rawreadformat =
 836                                 tmp->rawwriteformat =
 837                                 prefformat & ~AST_FORMAT_SLINEAR;
 838                         }
 839                 }
 840                 else {
 841                         tmp->nativeformats = prefformat;
 842                         tmp->rawreadformat = prefformat;
 843                         tmp->rawwriteformat = prefformat;
 844                 }
 845                 ast_setstate(tmp, state);
 846                 if (state == AST_STATE_RING)
 847                         tmp->rings = 1;
 848                 tmp->tech_pvt = i;
 849                 strncpy(tmp->context, context, sizeof(tmp->context)-1);
 850                 if (!ast_strlen_zero(i->ext))
 851                         strncpy(tmp->exten, i->ext, sizeof(tmp->exten)-1);
 852                 else
 853                         strncpy(tmp->exten, "s",  sizeof(tmp->exten) - 1);
 854                 if (!ast_strlen_zero(i->language))
 855                         ast_string_field_set(tmp, language, i->language);
 856                 if (!ast_strlen_zero(i->cid_num))
 857                         tmp->cid.cid_num = strdup(i->cid_num);
 858                 if (!ast_strlen_zero(i->cid_name))
 859                         tmp->cid.cid_name = strdup(i->cid_name);
 860                 i->owner = tmp;
 861                 ast_mutex_lock(&usecnt_lock);
 862                 usecnt++;
 863                 ast_mutex_unlock(&usecnt_lock);
 864                 ast_update_use_count();
 865                 if (state != AST_STATE_DOWN) {
 866                         if (state == AST_STATE_RING) {
 867                                 ioctl(tmp->fds[0], PHONE_RINGBACK);
 868                                 i->cpt = 1;
 869                         }
 870                         if (ast_pbx_start(tmp)) {
 871                                 ast_log(LOG_WARNING, "Unable to start PBX on %s\n", tmp->name);
 872                                 ast_hangup(tmp);
 873                         }
 874                 }
 875         } else
 876                 ast_log(LOG_WARNING, "Unable to allocate channel structure\n");
 877         return tmp;
 878 }
 879
 880 static void phone_mini_packet(struct phone_pvt *i)
 881 {
 882         int res;
 883         char buf[1024];
 884         /* Ignore stuff we read... */
 885         res = read(i->fd, buf, sizeof(buf));
 886         if (res < 1) {
 887                 ast_log(LOG_WARNING, "Read returned %d: %s\n", res, strerror(errno));
 888                 return;
 889         }
 890 }
 891
 892 static void phone_check_exception(struct phone_pvt *i)
 893 {
 894         int offhook=0;
 895         char digit[2] = {0 , 0};
 896         union telephony_exception phonee;
 897         /* XXX Do something XXX */
 898 #if 0
 899         ast_log(LOG_DEBUG, "Exception!\n");
 900 #endif
 901         phonee.bytes = ioctl(i->fd, PHONE_EXCEPTION);
 902         if (phonee.bits.dtmf_ready)  {
 903                 digit[0] = ioctl(i->fd, PHONE_GET_DTMF_ASCII);
 904                 if (i->mode == MODE_DIALTONE || i->mode == MODE_FXS) {
 905                         ioctl(i->fd, PHONE_PLAY_STOP);
 906                         ioctl(i->fd, PHONE_REC_STOP);
 907                         ioctl(i->fd, PHONE_CPT_STOP);
 908                         i->dialtone = 0;
 909                         if (strlen(i->ext) < AST_MAX_EXTENSION - 1)
 910                                 strncat(i->ext, digit, sizeof(i->ext) - strlen(i->ext) - 1);
 911                         if ((i->mode != MODE_FXS ||
 912                              !(phonee.bytes = ioctl(i->fd, PHONE_EXCEPTION)) ||
 913                              !phonee.bits.dtmf_ready) &&
 914                             ast_exists_extension(NULL, i->context, i->ext, 1, i->cid_num)) {
 915                                 /* It's a valid extension in its context, get moving! */
 916                                 phone_new(i, AST_STATE_RING, i->context);
 917                                 /* No need to restart monitor, we are the monitor */
 918                         } else if (!ast_canmatch_extension(NULL, i->context, i->ext, 1, i->cid_num)) {
 919                                 /* There is nothing in the specified extension that can match anymore.
 920                                    Try the default */
 921                                 if (ast_exists_extension(NULL, "default", i->ext, 1, i->cid_num)) {
 922                                         /* Check the default, too... */
 923                                         phone_new(i, AST_STATE_RING, "default");
 924                                         /* XXX This should probably be justified better XXX */
 925                                 }  else if (!ast_canmatch_extension(NULL, "default", i->ext, 1, i->cid_num)) {
 926                                         /* It's not a valid extension, give a busy signal */
 927                                         if (option_debug)
 928                                                 ast_log(LOG_DEBUG, "%s can't match anything in %s or default\n", i->ext, i->context);
 929                                         ioctl(i->fd, PHONE_BUSY);
 930                                         i->cpt = 1;
 931                                 }
 932                         }
 933 #if 0
 934                         ast_verbose("Extension is %s\n", i->ext);
 935 #endif
 936                 }
 937         }
 938         if (phonee.bits.hookstate) {
 939                 offhook = ioctl(i->fd, PHONE_HOOKSTATE);
 940                 if (offhook) {
 941                         if (i->mode == MODE_IMMEDIATE) {
 942                                 phone_new(i, AST_STATE_RING, i->context);
 943                         } else if (i->mode == MODE_DIALTONE) {
 944                                 ast_mutex_lock(&usecnt_lock);
 945                                 usecnt++;
 946                                 ast_mutex_unlock(&usecnt_lock);
 947                                 ast_update_use_count();
 948                                 /* Reset the extension */
 949                                 i->ext[0] = '\0';
 950                                 /* Play the dialtone */
 951                                 i->dialtone++;
 952                                 ioctl(i->fd, PHONE_PLAY_STOP);
 953                                 ioctl(i->fd, PHONE_PLAY_CODEC, ULAW);
 954                                 ioctl(i->fd, PHONE_PLAY_START);
 955                                 i->lastformat = -1;
 956                         }
 957                 } else {
 958                         if (i->dialtone) {
 959                                 ast_mutex_lock(&usecnt_lock);
 960                                 usecnt--;
 961                                 ast_mutex_unlock(&usecnt_lock);
 962                                 ast_update_use_count();
 963                         }
 964                         memset(i->ext, 0, sizeof(i->ext));
 965                         if (i->cpt)
 966                         {
 967                                 ioctl(i->fd, PHONE_CPT_STOP);
 968                                 i->cpt = 0;
 969                         }
 970                         ioctl(i->fd, PHONE_PLAY_STOP);
 971                         ioctl(i->fd, PHONE_REC_STOP);
 972                         i->dialtone = 0;
 973                         i->lastformat = -1;
 974                 }
 975         }
 976         if (phonee.bits.pstn_ring) {
 977                 ast_verbose("Unit is ringing\n");
 978                 phone_new(i, AST_STATE_RING, i->context);
 979         }
 980         if (phonee.bits.caller_id)
 981                 ast_verbose("We have caller ID\n");
 982
 983
 984 }
 985
 986 static void *do_monitor(void *data)
 987 {
 988         fd_set rfds, efds;
 989         int n, res;
 990         struct phone_pvt *i;
 991         int tonepos = 0;
 992         /* The tone we're playing this round */
 993         struct timeval tv = {0,0};
 994         int dotone;
 995         /* This thread monitors all the frame relay interfaces which are not yet in use
 996            (and thus do not have a separate thread) indefinitely */
 997         while (monitor) {
 998                 /* Don't let anybody kill us right away.  Nobody should lock the interface list
 999                    and wait for the monitor list, but the other way around is okay. */
1000                 /* Lock the interface list */
1001                 if (ast_mutex_lock(&iflock)) {
1002                         ast_log(LOG_ERROR, "Unable to grab interface lock\n");
1003                         return NULL;
1004                 }
1005                 /* Build the stuff we're going to select on, that is the socket of every
1006                    phone_pvt that does not have an associated owner channel */
1007                 n = -1;
1008                 FD_ZERO(&rfds);
1009                 FD_ZERO(&efds);
1010                 i = iflist;
1011                 dotone = 0;
1012                 while (i) {
1013                         if (FD_ISSET(i->fd, &rfds))
1014                                 ast_log(LOG_WARNING, "Descriptor %d appears twice (%s)?\n", i->fd, i->dev);
1015                         if (!i->owner) {
1016                                 /* This needs to be watched, as it lacks an owner */
1017                                 FD_SET(i->fd, &rfds);
1018                                 FD_SET(i->fd, &efds);
1019                                 if (i->fd > n)
1020                                         n = i->fd;
1021                                 if (i->dialtone) {
1022                                         /* Remember we're going to have to come back and play
1023                                            more dialtones */
1024                                         if (ast_tvzero(tv)) {
1025                                                 /* If we're due for a dialtone, play one */
1026                                                 if (write(i->fd, DialTone + tonepos, 240) != 240)
1027                                                         ast_log(LOG_WARNING, "Dial tone write error\n");
1028                                         }
1029                                         dotone++;
1030                                 }
1031                         }
1032
1033                         i = i->next;
1034                 }
1035                 /* Okay, now that we know what to do, release the interface lock */
1036                 ast_mutex_unlock(&iflock);
1037
1038                 /* Wait indefinitely for something to happen */
1039                 if (dotone) {
1040                         /* If we're ready to recycle the time, set it to 30 ms */
1041                         tonepos += 240;
1042                         if (tonepos >= sizeof(DialTone))
1043                                         tonepos = 0;
1044                         if (ast_tvzero(tv)) {
1045                                 tv = ast_tv(30000, 0);
1046                         }
1047                         res = ast_select(n + 1, &rfds, NULL, &efds, &tv);
1048                 } else {
1049                         res = ast_select(n + 1, &rfds, NULL, &efds, NULL);
1050                         tv = ast_tv(0,0);
1051                         tonepos = 0;
1052                 }
1053                 /* Okay, select has finished.  Let's see what happened.  */
1054                 if (res < 0) {
1055                         ast_log(LOG_DEBUG, "select return %d: %s\n", res, strerror(errno));
1056                         continue;
1057                 }
1058                 /* If there are no fd's changed, just continue, it's probably time
1059                    to play some more dialtones */
1060                 if (!res)
1061                         continue;
1062                 /* Alright, lock the interface list again, and let's look and see what has
1063                    happened */
1064                 if (ast_mutex_lock(&iflock)) {
1065                         ast_log(LOG_WARNING, "Unable to lock the interface list\n");
1066                         continue;
1067                 }
1068
1069                 i = iflist;
1070                 for(; i; i=i->next) {
1071                         if (FD_ISSET(i->fd, &rfds)) {
1072                                 if (i->owner) {
1073                                         continue;
1074                                 }
1075                                 phone_mini_packet(i);
1076                         }
1077                         if (FD_ISSET(i->fd, &efds)) {
1078                                 if (i->owner) {
1079                                         continue;
1080                                 }
1081                                 phone_check_exception(i);
1082                         }
1083                 }
1084                 ast_mutex_unlock(&iflock);
1085         }
1086         return NULL;
1087
1088 }
1089
1090 static int restart_monitor()
1091 {
1092         /* If we're supposed to be stopped -- stay stopped */
1093         if (monitor_thread == AST_PTHREADT_STOP)
1094                 return 0;
1095         if (ast_mutex_lock(&monlock)) {
1096                 ast_log(LOG_WARNING, "Unable to lock monitor\n");
1097                 return -1;
1098         }
1099         if (monitor_thread == pthread_self()) {
1100                 ast_mutex_unlock(&monlock);
1101                 ast_log(LOG_WARNING, "Cannot kill myself\n");
1102                 return -1;
1103         }
1104         if (monitor_thread != AST_PTHREADT_NULL) {
1105                 if (ast_mutex_lock(&iflock)) {
1106                         ast_mutex_unlock(&monlock);
1107                         ast_log(LOG_WARNING, "Unable to lock the interface list\n");
1108                         return -1;
1109                 }
1110                 monitor = 0;
1111                 while (pthread_kill(monitor_thread, SIGURG) == 0)
1112                         sched_yield();
1113                 pthread_join(monitor_thread, NULL);
1114                 ast_mutex_unlock(&iflock);
1115         }
1116         monitor = 1;
1117         /* Start a new monitor */
1118         if (ast_pthread_create(&monitor_thread, NULL, do_monitor, NULL) < 0) {
1119                 ast_mutex_unlock(&monlock);
1120                 ast_log(LOG_ERROR, "Unable to start monitor thread.\n");
1121                 return -1;
1122         }
1123         ast_mutex_unlock(&monlock);
1124         return 0;
1125 }
1126
1127 static struct phone_pvt *mkif(char *iface, int mode, int txgain, int rxgain)
1128 {
1129         /* Make a phone_pvt structure for this interface */
1130         struct phone_pvt *tmp;
1131         int flags;
1132
1133         tmp = malloc(sizeof(struct phone_pvt));
1134         if (tmp) {
1135                 tmp->fd = open(iface, O_RDWR);
1136                 if (tmp->fd < 0) {
1137                         ast_log(LOG_WARNING, "Unable to open '%s'\n", iface);
1138                         free(tmp);
1139                         return NULL;
1140                 }
1141                 if (mode == MODE_FXO) {
1142                         if (ioctl(tmp->fd, IXJCTL_PORT, PORT_PSTN))
1143                                 ast_log(LOG_DEBUG, "Unable to set port to PSTN\n");
1144                 } else {
1145                         if (ioctl(tmp->fd, IXJCTL_PORT, PORT_POTS))
1146                                  if (mode != MODE_FXS)
1147                                       ast_log(LOG_DEBUG, "Unable to set port to POTS\n");
1148                 }
1149                 ioctl(tmp->fd, PHONE_PLAY_STOP);
1150                 ioctl(tmp->fd, PHONE_REC_STOP);
1151                 ioctl(tmp->fd, PHONE_RING_STOP);
1152                 ioctl(tmp->fd, PHONE_CPT_STOP);
1153                 if (ioctl(tmp->fd, PHONE_PSTN_SET_STATE, PSTN_ON_HOOK))
1154                         ast_log(LOG_DEBUG, "ioctl(PHONE_PSTN_SET_STATE) failed on %s (%s)\n",iface, strerror(errno));
1155                 if (echocancel != AEC_OFF)
1156                         ioctl(tmp->fd, IXJCTL_AEC_START, echocancel);
1157                 if (silencesupression)
1158                         tmp->silencesupression = 1;
1159 #ifdef PHONE_VAD
1160                 ioctl(tmp->fd, PHONE_VAD, tmp->silencesupression);
1161 #endif
1162                 tmp->mode = mode;
1163                 flags = fcntl(tmp->fd, F_GETFL);
1164                 fcntl(tmp->fd, F_SETFL, flags | O_NONBLOCK);
1165                 tmp->owner = NULL;
1166                 tmp->lastformat = -1;
1167                 tmp->lastinput = -1;
1168                 tmp->ministate = 0;
1169                 memset(tmp->ext, 0, sizeof(tmp->ext));
1170                 strncpy(tmp->language, language, sizeof(tmp->language)-1);
1171                 strncpy(tmp->dev, iface, sizeof(tmp->dev)-1);
1172                 strncpy(tmp->context, context, sizeof(tmp->context)-1);
1173                 tmp->next = NULL;
1174                 tmp->obuflen = 0;
1175                 tmp->dialtone = 0;
1176                 tmp->cpt = 0;
1177                 strncpy(tmp->cid_num, cid_num, sizeof(tmp->cid_num)-1);
1178                 strncpy(tmp->cid_name, cid_name, sizeof(tmp->cid_name)-1);
1179                 tmp->txgain = txgain;
1180                 ioctl(tmp->fd, PHONE_PLAY_VOLUME, tmp->txgain);
1181                 tmp->rxgain = rxgain;
1182                 ioctl(tmp->fd, PHONE_REC_VOLUME, tmp->rxgain);
1183         }
1184         return tmp;
1185 }
1186
1187 static struct ast_channel *phone_request(const char *type, int format, void *data, int *cause)
1188 {
1189         int oldformat;
1190         struct phone_pvt *p;
1191         struct ast_channel *tmp = NULL;
1192         char *name = data;
1193
1194         /* Search for an unowned channel */
1195         if (ast_mutex_lock(&iflock)) {
1196                 ast_log(LOG_ERROR, "Unable to lock interface list???\n");
1197                 return NULL;
1198         }
1199         p = iflist;
1200         while(p) {
1201                 if (p->mode == MODE_FXS ||
1202                     format & (AST_FORMAT_G723_1 | AST_FORMAT_SLINEAR | AST_FORMAT_ULAW)) {
1203                     size_t length = strlen(p->dev + 5);
1204                 if (strncmp(name, p->dev + 5, length) == 0 &&
1205                     !isalnum(name[length])) {
1206                     if (!p->owner) {
1207                      tmp = phone_new(p, AST_STATE_DOWN, p->context);
1208                      break;
1209                 } else
1210                      *cause = AST_CAUSE_BUSY;
1211             }
1212                 }
1213                 p = p->next;
1214         }
1215         ast_mutex_unlock(&iflock);
1216         restart_monitor();
1217         if (tmp == NULL) {
1218                 oldformat = format;
1219                 format &= (AST_FORMAT_G723_1 | AST_FORMAT_SLINEAR | AST_FORMAT_ULAW);
1220                 if (!format) {
1221                         ast_log(LOG_NOTICE, "Asked to get a channel of unsupported format '%d'\n", oldformat);
1222                         return NULL;
1223                 }
1224         }
1225         return tmp;
1226 }
1227
1228 /* parse gain value from config file */
1229 static int parse_gain_value(char *gain_type, char *value)
1230 {
1231         float gain;
1232
1233         /* try to scan number */
1234         if (sscanf(value, "%f", &gain) != 1)
1235         {
1236                 ast_log(LOG_ERROR, "Invalid %s value '%s' in '%s' config\n",
1237                         value, gain_type, config);
1238                 return DEFAULT_GAIN;
1239         }
1240
1241         /* multiplicate gain by 1.0 gain value */
1242         gain = gain * (float)DEFAULT_GAIN;
1243
1244         /* percentage? */
1245         if (value[strlen(value) - 1] == '%')
1246                 return (int)(gain / (float)100);
1247
1248         return (int)gain;
1249 }
1250
1251 static int __unload_module(void)
1252 {
1253         struct phone_pvt *p, *pl;
1254         /* First, take us out of the channel loop */
1255         ast_channel_unregister(cur_tech);
1256         if (!ast_mutex_lock(&iflock)) {
1257                 /* Hangup all interfaces if they have an owner */
1258                 p = iflist;
1259                 while(p) {
1260                         if (p->owner)
1261                                 ast_softhangup(p->owner, AST_SOFTHANGUP_APPUNLOAD);
1262                         p = p->next;
1263                 }
1264                 iflist = NULL;
1265                 ast_mutex_unlock(&iflock);
1266         } else {
1267                 ast_log(LOG_WARNING, "Unable to lock the monitor\n");
1268                 return -1;
1269         }
1270         if (!ast_mutex_lock(&monlock)) {
1271                 if (monitor_thread > AST_PTHREADT_NULL) {
1272                         monitor = 0;
1273                         while (pthread_kill(monitor_thread, SIGURG) == 0)
1274                                 sched_yield();
1275                         pthread_join(monitor_thread, NULL);
1276                 }
1277                 monitor_thread = AST_PTHREADT_STOP;
1278                 ast_mutex_unlock(&monlock);
1279         } else {
1280                 ast_log(LOG_WARNING, "Unable to lock the monitor\n");
1281                 return -1;
1282         }
1283
1284         if (!ast_mutex_lock(&iflock)) {
1285                 /* Destroy all the interfaces and free their memory */
1286                 p = iflist;
1287                 while(p) {
1288                         /* Close the socket, assuming it's real */
1289                         if (p->fd > -1)
1290                                 close(p->fd);
1291                         pl = p;
1292                         p = p->next;
1293                         /* Free associated memory */
1294                         free(pl);
1295                 }
1296                 iflist = NULL;
1297                 ast_mutex_unlock(&iflock);
1298         } else {
1299                 ast_log(LOG_WARNING, "Unable to lock the monitor\n");
1300                 return -1;
1301         }
1302
1303         return 0;
1304 }
1305
1306 static int unload_module(void *mod)
1307 {
1308         return __unload_module();
1309 }
1310
1311 static int load_module(void *mod)
1312 {
1313         struct ast_config *cfg;
1314         struct ast_variable *v;
1315         struct phone_pvt *tmp;
1316         int mode = MODE_IMMEDIATE;
1317         int txgain = DEFAULT_GAIN, rxgain = DEFAULT_GAIN; /* default gain 1.0 */
1318         cfg = ast_config_load(config);
1319
1320         /* We *must* have a config file otherwise stop immediately */
1321         if (!cfg) {
1322                 ast_log(LOG_ERROR, "Unable to load config %s\n", config);
1323                 return -1;
1324         }
1325         if (ast_mutex_lock(&iflock)) {
1326                 /* It's a little silly to lock it, but we mind as well just to be sure */
1327                 ast_log(LOG_ERROR, "Unable to lock interface list???\n");
1328                 return -1;
1329         }
1330         v = ast_variable_browse(cfg, "interfaces");
1331         while(v) {
1332                 /* Create the interface list */
1333                 if (!strcasecmp(v->name, "device")) {
1334                                 tmp = mkif(v->value, mode, txgain, rxgain);
1335                                 if (tmp) {
1336                                         tmp->next = iflist;
1337                                         iflist = tmp;
1338
1339                                 } else {
1340                                         ast_log(LOG_ERROR, "Unable to register channel '%s'\n", v->value);
1341                                         ast_config_destroy(cfg);
1342                                         ast_mutex_unlock(&iflock);
1343                                         __unload_module();
1344                                         return -1;
1345                                 }
1346                 } else if (!strcasecmp(v->name, "silencesupression")) {
1347                         silencesupression = ast_true(v->value);
1348                 } else if (!strcasecmp(v->name, "language")) {
1349                         strncpy(language, v->value, sizeof(language)-1);
1350                 } else if (!strcasecmp(v->name, "callerid")) {
1351                         ast_callerid_split(v->value, cid_name, sizeof(cid_name), cid_num, sizeof(cid_num));
1352                 } else if (!strcasecmp(v->name, "mode")) {
1353                         if (!strncasecmp(v->value, "di", 2))
1354                                 mode = MODE_DIALTONE;
1355                         else if (!strncasecmp(v->value, "im", 2))
1356                                 mode = MODE_IMMEDIATE;
1357                         else if (!strncasecmp(v->value, "fxs", 3)) {
1358                                 mode = MODE_FXS;
1359                                 prefformat = 0x01ff0000; /* All non-voice */
1360                         }
1361                         else if (!strncasecmp(v->value, "fx", 2))
1362                                 mode = MODE_FXO;
1363                         else
1364                                 ast_log(LOG_WARNING, "Unknown mode: %s\n", v->value);
1365                 } else if (!strcasecmp(v->name, "context")) {
1366                         strncpy(context, v->value, sizeof(context)-1);
1367                 } else if (!strcasecmp(v->name, "format")) {
1368                         if (!strcasecmp(v->value, "g723.1")) {
1369                                 prefformat = AST_FORMAT_G723_1;
1370                         } else if (!strcasecmp(v->value, "slinear")) {
1371                                 if (mode == MODE_FXS)
1372                                     prefformat |= AST_FORMAT_SLINEAR;
1373                                 else prefformat = AST_FORMAT_SLINEAR;
1374                         } else if (!strcasecmp(v->value, "ulaw")) {
1375                                 prefformat = AST_FORMAT_ULAW;
1376                         } else
1377                                 ast_log(LOG_WARNING, "Unknown format '%s'\n", v->value);
1378                 } else if (!strcasecmp(v->name, "echocancel")) {
1379                         if (!strcasecmp(v->value, "off")) {
1380                                 echocancel = AEC_OFF;
1381                         } else if (!strcasecmp(v->value, "low")) {
1382                                 echocancel = AEC_LOW;
1383                         } else if (!strcasecmp(v->value, "medium")) {
1384                                 echocancel = AEC_MED;
1385                         } else if (!strcasecmp(v->value, "high")) {
1386                                 echocancel = AEC_HIGH;
1387                         } else
1388                                 ast_log(LOG_WARNING, "Unknown echo cancellation '%s'\n", v->value);
1389                 } else if (!strcasecmp(v->name, "txgain")) {
1390                         txgain = parse_gain_value(v->name, v->value);
1391                 } else if (!strcasecmp(v->name, "rxgain")) {
1392                         rxgain = parse_gain_value(v->name, v->value);
1393                 }
1394                 v = v->next;
1395         }
1396         ast_mutex_unlock(&iflock);
1397
1398         if (mode == MODE_FXS) {
1399                 phone_tech_fxs.capabilities = prefformat;
1400                 cur_tech = &phone_tech_fxs;
1401         } else
1402                 cur_tech = (struct ast_channel_tech *) &phone_tech;
1403
1404         /* Make sure we can register our Adtranphone channel type */
1405
1406         if (ast_channel_register(cur_tech)) {
1407                 ast_log(LOG_ERROR, "Unable to register channel class 'Phone'\n");
1408                 ast_config_destroy(cfg);
1409                 __unload_module();
1410                 return -1;
1411         }
1412         ast_config_destroy(cfg);
1413         /* And start the monitor for the first time */
1414         restart_monitor();
1415         return 0;
1416 }
1417
1418 static const char *description(void)
1419 {
1420         return (char *) desc;
1421 }
1422
1423 static const char *key(void)
1424 {
1425         return ASTERISK_GPL_KEY;
1426 }
1427
1428 STD_MOD1;