gsm_ms.cpp

   1 /*****************************************************************************\
   2 **                                                                           **
   3 ** LCR                                                                       **
   4 **                                                                           **
   5 **---------------------------------------------------------------------------**
   6 ** Copyright: Andreas Eversberg                                              **
   7 **                                                                           **
   8 ** mISDN gsm (MS mode)                                                       **
   9 **                                                                           **
  10 \*****************************************************************************/
  11
  12 #include "main.h"
  13 #include "mncc.h"
  14
  15
  16 struct lcr_gsm *gsm_ms_first = NULL;
  17
  18 static int dtmf_timeout(struct lcr_timer *timer, void *instance, int index);
  19
  20 #define DTMF_ST_IDLE            0       /* no DTMF active */
  21 #define DTMF_ST_START           1       /* DTMF started, waiting for resp. */
  22 #define DTMF_ST_MARK            2       /* wait tone duration */
  23 #define DTMF_ST_STOP            3       /* DTMF stopped, waiting for resp. */
  24 #define DTMF_ST_SPACE           4       /* wait space between tones */
  25
  26 #define RTP_PT_GSM_FULL         3
  27
  28 /*
  29  * constructor
  30  */
  31 Pgsm_ms::Pgsm_ms(int type, char *portname, struct port_settings *settings, struct interface *interface) : Pgsm(type, portname, settings, interface)
  32 {
  33         struct lcr_gsm *gsm_ms = gsm_ms_first;
  34
  35         p_g_lcr_gsm = NULL;
  36         SCPY(p_g_ms_name, interface->gsm_ms_name);
  37
  38         while (gsm_ms) {
  39                 if (gsm_ms->type == LCR_GSM_TYPE_MS && !strcmp(gsm_ms->name, p_g_ms_name)) {
  40                         p_g_lcr_gsm = gsm_ms;
  41                         break;
  42                 }
  43                 gsm_ms = gsm_ms->gsm_next;
  44         }
  45
  46         p_g_dtmf_state = DTMF_ST_IDLE;
  47         p_g_dtmf_index = 0;
  48         p_g_dtmf[0] = '\0';
  49         memset(&p_g_dtmf_timer, 0, sizeof(p_g_dtmf_timer));
  50         add_timer(&p_g_dtmf_timer, dtmf_timeout, this, 0);
  51
  52         PDEBUG(DEBUG_GSM, "Created new GSMMSPort(%s %s).\n", portname, p_g_ms_name);
  53 }
  54
  55 /*
  56  * destructor
  57  */
  58 Pgsm_ms::~Pgsm_ms()
  59 {
  60         PDEBUG(DEBUG_GSM, "Destroyed GSM MS process(%s).\n", p_name);
  61         del_timer(&p_g_dtmf_timer);
  62 }
  63
  64 /*
  65  * handles all indications
  66  */
  67 /* SETUP INDICATION */
  68 void Pgsm_ms::setup_ind(unsigned int msg_type, unsigned int callref, struct gsm_mncc *mncc)
  69 {
  70         class Endpoint *epoint;
  71         struct lcr_msg *message;
  72         struct gsm_mncc *proceeding, *frame;
  73         struct interface *interface;
  74
  75         interface = getinterfacebyname(p_interface_name);
  76         if (!interface) {
  77                 PERROR("Cannot find interface %s.\n", p_interface_name);
  78                 return;
  79         }
  80
  81         /* process given callref */
  82         gsm_trace_header(p_interface_name, this, 0, DIRECTION_IN);
  83         add_trace("callref", "new", "0x%x", callref);
  84         if (p_g_callref) {
  85                 /* release in case the ID is already in use */
  86                 add_trace("error", NULL, "callref already in use");
  87 reject:
  88                 end_trace();
  89                 mncc = create_mncc(MNCC_REJ_REQ, callref);
  90                 gsm_trace_header(p_interface_name, this, MNCC_REJ_REQ, DIRECTION_OUT);
  91                 mncc->fields |= MNCC_F_CAUSE;
  92                 mncc->cause.coding = 3;
  93                 mncc->cause.location = 1;
  94                 mncc->cause.value = 47;
  95                 add_trace("cause", "coding", "%d", mncc->cause.coding);
  96                 add_trace("cause", "location", "%d", mncc->cause.location);
  97                 add_trace("cause", "value", "%d", mncc->cause.value);
  98                 add_trace("reason", NULL, "callref already in use");
  99                 end_trace();
 100                 send_and_free_mncc(p_g_lcr_gsm, mncc->msg_type, mncc);
 101                 new_state(PORT_STATE_RELEASE);
 102                 trigger_work(&p_g_delete);
 103                 return;
 104         }
 105         if (callref < 0x40000000) {
 106                 /* release in case the ID is invalid */
 107                 add_trace("error", NULL, "callref invalid, not of MS type");
 108                 goto reject;
 109         }
 110
 111         p_g_callref = callref;
 112         end_trace();
 113
 114         gsm_trace_header(p_interface_name, this, MNCC_SETUP_IND, DIRECTION_IN);
 115         /* caller information */
 116         p_callerinfo.ntype = INFO_NTYPE_NOTPRESENT;
 117         if (mncc->fields & MNCC_F_CALLING) {
 118                 switch (mncc->calling.present) {
 119                         case 1:
 120                         p_callerinfo.present = INFO_PRESENT_RESTRICTED;
 121                         break;
 122                         case 2:
 123                         p_callerinfo.present = INFO_PRESENT_NOTAVAIL;
 124                         break;
 125                         default:
 126                         p_callerinfo.present = INFO_PRESENT_ALLOWED;
 127                         break;
 128                 }
 129                 switch (mncc->calling.screen) {
 130                         case 0:
 131                         p_callerinfo.screen = INFO_SCREEN_USER;
 132                         break;
 133                         case 1:
 134                         p_callerinfo.screen = INFO_SCREEN_USER_VERIFIED_PASSED;
 135                         break;
 136                         case 2:
 137                         p_callerinfo.screen = INFO_SCREEN_USER_VERIFIED_FAILED;
 138                         break;
 139                         default:
 140                         p_callerinfo.screen = INFO_SCREEN_NETWORK;
 141                         break;
 142                 }
 143                 switch (mncc->calling.type) {
 144                         case 0x0:
 145                         p_callerinfo.ntype = INFO_NTYPE_UNKNOWN;
 146                         break;
 147                         case 0x1:
 148                         p_callerinfo.ntype = INFO_NTYPE_INTERNATIONAL;
 149                         break;
 150                         case 0x2:
 151                         p_callerinfo.ntype = INFO_NTYPE_NATIONAL;
 152                         break;
 153                         case 0x4:
 154                         p_callerinfo.ntype = INFO_NTYPE_SUBSCRIBER;
 155                         break;
 156                         default:
 157                         p_callerinfo.ntype = INFO_NTYPE_UNKNOWN;
 158                         break;
 159                 }
 160                 SCPY(p_callerinfo.id, mncc->calling.number);
 161                 add_trace("calling", "type", "%d", mncc->calling.type);
 162                 add_trace("calling", "plan", "%d", mncc->calling.plan);
 163                 add_trace("calling", "present", "%d", mncc->calling.present);
 164                 add_trace("calling", "screen", "%d", mncc->calling.screen);
 165                 add_trace("calling", "number", "%s", mncc->calling.number);
 166         }
 167         SCPY(p_callerinfo.interface, p_interface_name);
 168         /* dialing information */
 169         if (mncc->fields & MNCC_F_CALLED) {
 170                 SCAT(p_dialinginfo.id, mncc->called.number);
 171                 switch (mncc->called.type) {
 172                         case 0x1:
 173                         p_dialinginfo.ntype = INFO_NTYPE_INTERNATIONAL;
 174                         break;
 175                         case 0x2:
 176                         p_dialinginfo.ntype = INFO_NTYPE_NATIONAL;
 177                         break;
 178                         case 0x4:
 179                         p_dialinginfo.ntype = INFO_NTYPE_SUBSCRIBER;
 180                         break;
 181                         default:
 182                         p_dialinginfo.ntype = INFO_NTYPE_UNKNOWN;
 183                         break;
 184                 }
 185                 add_trace("dialing", "type", "%d", mncc->called.type);
 186                 add_trace("dialing", "plan", "%d", mncc->called.plan);
 187                 add_trace("dialing", "number", "%s", mncc->called.number);
 188         }
 189         p_dialinginfo.sending_complete = 1;
 190         /* redir info */
 191         p_redirinfo.ntype = INFO_NTYPE_NOTPRESENT;
 192         if (mncc->fields & MNCC_F_REDIRECTING) {
 193                 switch (mncc->redirecting.present) {
 194                         case 1:
 195                         p_redirinfo.present = INFO_PRESENT_RESTRICTED;
 196                         break;
 197                         case 2:
 198                         p_redirinfo.present = INFO_PRESENT_NOTAVAIL;
 199                         break;
 200                         default:
 201                         p_redirinfo.present = INFO_PRESENT_ALLOWED;
 202                         break;
 203                 }
 204                 switch (mncc->redirecting.screen) {
 205                         case 0:
 206                         p_redirinfo.screen = INFO_SCREEN_USER;
 207                         break;
 208                         case 1:
 209                         p_redirinfo.screen = INFO_SCREEN_USER_VERIFIED_PASSED;
 210                         break;
 211                         case 2:
 212                         p_redirinfo.screen = INFO_SCREEN_USER_VERIFIED_FAILED;
 213                         break;
 214                         default:
 215                         p_redirinfo.screen = INFO_SCREEN_NETWORK;
 216                         break;
 217                 }
 218                 switch (mncc->redirecting.type) {
 219                         case 0x0:
 220                         p_redirinfo.ntype = INFO_NTYPE_UNKNOWN;
 221                         break;
 222                         case 0x1:
 223                         p_redirinfo.ntype = INFO_NTYPE_INTERNATIONAL;
 224                         break;
 225                         case 0x2:
 226                         p_redirinfo.ntype = INFO_NTYPE_NATIONAL;
 227                         break;
 228                         case 0x4:
 229                         p_redirinfo.ntype = INFO_NTYPE_SUBSCRIBER;
 230                         break;
 231                         default:
 232                         p_redirinfo.ntype = INFO_NTYPE_UNKNOWN;
 233                         break;
 234                 }
 235                 SCPY(p_redirinfo.id, mncc->redirecting.number);
 236                 add_trace("redir", "type", "%d", mncc->redirecting.type);
 237                 add_trace("redir", "plan", "%d", mncc->redirecting.plan);
 238                 add_trace("redir", "present", "%d", mncc->redirecting.present);
 239                 add_trace("redir", "screen", "%d", mncc->redirecting.screen);
 240                 add_trace("redir", "number", "%s", mncc->redirecting.number);
 241         }
 242         /* bearer capability */
 243         if (mncc->fields & MNCC_F_BEARER_CAP) {
 244                 switch (mncc->bearer_cap.transfer) {
 245                         case 1:
 246                         p_capainfo.bearer_capa = INFO_BC_DATAUNRESTRICTED;
 247                         break;
 248                         case 2:
 249                         case 3:
 250                         p_capainfo.bearer_capa = INFO_BC_AUDIO;
 251                         p_capainfo.bearer_info1 = (options.law=='a')?3:2;
 252                         break;
 253                         default:
 254                         p_capainfo.bearer_capa = INFO_BC_SPEECH;
 255                         p_capainfo.bearer_info1 = (options.law=='a')?3:2;
 256                         break;
 257                 }
 258                 switch (mncc->bearer_cap.mode) {
 259                         case 1:
 260                         p_capainfo.bearer_mode = INFO_BMODE_PACKET;
 261                         break;
 262                         default:
 263                         p_capainfo.bearer_mode = INFO_BMODE_CIRCUIT;
 264                         break;
 265                 }
 266                 add_trace("bearer", "transfer", "%d", mncc->bearer_cap.transfer);
 267                 add_trace("bearer", "mode", "%d", mncc->bearer_cap.mode);
 268         } else {
 269                 p_capainfo.bearer_capa = INFO_BC_SPEECH;
 270                 p_capainfo.bearer_info1 = (options.law=='a')?3:2;
 271                 p_capainfo.bearer_mode = INFO_BMODE_CIRCUIT;
 272         }
 273         /* if packet mode works some day, see dss1.cpp for conditions */
 274         p_capainfo.source_mode = B_MODE_TRANSPARENT;
 275
 276         end_trace();
 277
 278         /* create endpoint */
 279         if (p_epointlist)
 280                 FATAL("Incoming call but already got an endpoint.\n");
 281         if (!(epoint = new Endpoint(p_serial, 0)))
 282                 FATAL("No memory for Endpoint instance\n");
 283         epoint->ep_app = new_endpointapp(epoint, 0, interface->app); //incoming
 284         epointlist_new(epoint->ep_serial);
 285
 286         /* modify lchan to GSM codec V1 */
 287         modify_lchan(MEDIA_TYPE_GSM);
 288
 289         /* send call proceeding */
 290         gsm_trace_header(p_interface_name, this, MNCC_CALL_CONF_REQ, DIRECTION_OUT);
 291         proceeding = create_mncc(MNCC_CALL_CONF_REQ, p_g_callref);
 292         /* bearer capability (mandatory, if not present in setup message) */
 293         if (!(mncc->fields & MNCC_F_BEARER_CAP)) {
 294                 proceeding->fields |= MNCC_F_BEARER_CAP;
 295                 proceeding->bearer_cap.coding = 0;
 296                 proceeding->bearer_cap.radio = 1;
 297                 proceeding->bearer_cap.speech_ctm = 0;
 298                 proceeding->bearer_cap.speech_ver[0] = 0;
 299                 proceeding->bearer_cap.speech_ver[1] = -1; /* end of list */
 300                 proceeding->bearer_cap.transfer = 0;
 301                 proceeding->bearer_cap.mode = 0;
 302         }
 303         /* DTMF supported */
 304         proceeding->fields |= MNCC_F_CCCAP;
 305         proceeding->cccap.dtmf = 1;
 306         end_trace();
 307         send_and_free_mncc(p_g_lcr_gsm, proceeding->msg_type, proceeding);
 308
 309         new_state(PORT_STATE_IN_PROCEEDING);
 310
 311         if (p_g_tones && !p_g_tch_connected) { /* only if ... */
 312                 gsm_trace_header(p_interface_name, this, MNCC_FRAME_RECV, DIRECTION_OUT);
 313                 end_trace();
 314                 frame = create_mncc(MNCC_FRAME_RECV, p_g_callref);
 315                 send_and_free_mncc(p_g_lcr_gsm, frame->msg_type, frame);
 316                 p_g_tch_connected = 1;
 317         }
 318
 319         /* send setup message to endpoit */
 320         message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_SETUP);
 321         message->param.setup.port_type = p_type;
 322 //      message->param.setup.dtmf = 0;
 323         memcpy(&message->param.setup.dialinginfo, &p_dialinginfo, sizeof(struct dialing_info));
 324         memcpy(&message->param.setup.callerinfo, &p_callerinfo, sizeof(struct caller_info));
 325         memcpy(&message->param.setup.capainfo, &p_capainfo, sizeof(struct capa_info));
 326         SCPY((char *)message->param.setup.useruser.data, (char *)mncc->useruser.info);
 327         message->param.setup.useruser.len = strlen(mncc->useruser.info);
 328         message->param.setup.useruser.protocol = mncc->useruser.proto;
 329         message_put(message);
 330 }
 331
 332 /*
 333  * MS sends message to port
 334  */
 335 int message_ms(class Pgsm_ms *pgsm_ms, struct lcr_gsm *gsm_ms, int msg_type, void *arg)
 336 {
 337         struct gsm_mncc *mncc = (struct gsm_mncc *)arg;
 338         unsigned int callref = mncc->callref;
 339         char name[64];
 340
 341         /* Special messages */
 342         switch (msg_type) {
 343         }
 344
 345         if (msg_type == GSM_TCHF_FRAME
 346          || msg_type == GSM_BAD_FRAME) {
 347                 if (pgsm_ms)
 348                         pgsm_ms->frame_receive(arg);
 349                 return 0;
 350         }
 351
 352         if (!pgsm_ms) {
 353                 struct interface *interface;
 354
 355                 if (msg_type != MNCC_SETUP_IND)
 356                         return(0);
 357
 358                 interface = getinterfacebyname(gsm_ms->interface_name);
 359                 if (!interface) {
 360                         struct gsm_mncc *rej;
 361
 362                         rej = create_mncc(MNCC_REJ_REQ, callref);
 363                         rej->fields |= MNCC_F_CAUSE;
 364                         rej->cause.coding = 3;
 365                         rej->cause.location = 1;
 366                         rej->cause.value = 27;
 367                         gsm_trace_header(NULL, NULL, MNCC_REJ_REQ, DIRECTION_OUT);
 368                         add_trace("cause", "coding", "%d", rej->cause.coding);
 369                         add_trace("cause", "location", "%d", rej->cause.location);
 370                         add_trace("cause", "value", "%d", rej->cause.value);
 371                         add_trace("reason", NULL, "interface %s not found", gsm_ms->interface_name);
 372                         end_trace();
 373                         send_and_free_mncc(gsm_ms, rej->msg_type, rej);
 374                         return 0;
 375                 }
 376                 /* creating port object, transparent until setup with hdlc */
 377                 SPRINT(name, "%s-%d-in", interface->name, 0);
 378                 if (!(pgsm_ms = new Pgsm_ms(PORT_TYPE_GSM_MS_IN, name, NULL, interface)))
 379                         FATAL("Cannot create Port instance.\n");
 380         }
 381
 382         switch(msg_type) {
 383                 case MNCC_SETUP_IND:
 384                 pgsm_ms->setup_ind(msg_type, callref, mncc);
 385                 break;
 386
 387                 case MNCC_CALL_PROC_IND:
 388                 pgsm_ms->call_proc_ind(msg_type, callref, mncc);
 389                 break;
 390
 391                 case MNCC_ALERT_IND:
 392                 pgsm_ms->alert_ind(msg_type, callref, mncc);
 393                 break;
 394
 395                 case MNCC_SETUP_CNF:
 396                 pgsm_ms->setup_cnf(msg_type, callref, mncc);
 397                 break;
 398
 399                 case MNCC_SETUP_COMPL_IND:
 400                 pgsm_ms->setup_compl_ind(msg_type, callref, mncc);
 401                 break;
 402
 403                 case MNCC_DISC_IND:
 404                 pgsm_ms->disc_ind(msg_type, callref, mncc);
 405                 break;
 406
 407                 case MNCC_REL_IND:
 408                 case MNCC_REL_CNF:
 409                 case MNCC_REJ_IND:
 410                 pgsm_ms->rel_ind(msg_type, callref, mncc);
 411                 break;
 412
 413                 case MNCC_NOTIFY_IND:
 414                 pgsm_ms->notify_ind(msg_type, callref, mncc);
 415                 break;
 416
 417                 case MNCC_START_DTMF_RSP:
 418                 case MNCC_START_DTMF_REJ:
 419                 case MNCC_STOP_DTMF_RSP:
 420                 pgsm_ms->dtmf_statemachine(mncc);
 421                 break;
 422
 423                 default:
 424                 ;
 425         }
 426         return(0);
 427 }
 428
 429 /* MESSAGE_SETUP */
 430 void Pgsm_ms::message_setup(unsigned int epoint_id, int message_id, union parameter *param)
 431 {
 432         struct lcr_msg *message;
 433         struct epoint_list *epointlist;
 434         struct gsm_mncc *mncc;
 435
 436         /* copy setup infos to port */
 437         memcpy(&p_callerinfo, &param->setup.callerinfo, sizeof(p_callerinfo));
 438         memcpy(&p_dialinginfo, &param->setup.dialinginfo, sizeof(p_dialinginfo));
 439         memcpy(&p_capainfo, &param->setup.capainfo, sizeof(p_capainfo));
 440         memcpy(&p_redirinfo, &param->setup.redirinfo, sizeof(p_redirinfo));
 441
 442         /* no instance */
 443         if (!p_g_lcr_gsm || p_g_lcr_gsm->mncc_lfd.fd < 0) {
 444                 gsm_trace_header(p_interface_name, this, MNCC_SETUP_REQ, DIRECTION_OUT);
 445                 add_trace("failure", NULL, "MS %s instance is unavailable", p_g_ms_name);
 446                 end_trace();
 447                 message = message_create(p_serial, epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE);
 448                 message->param.disconnectinfo.cause = 41;
 449                 message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
 450                 message_put(message);
 451                 new_state(PORT_STATE_RELEASE);
 452                 trigger_work(&p_g_delete);
 453                 return;
 454         }
 455
 456         /* no number */
 457         if (!p_dialinginfo.id[0]) {
 458                 gsm_trace_header(p_interface_name, this, MNCC_SETUP_REQ, DIRECTION_OUT);
 459                 add_trace("failure", NULL, "No dialed subscriber given.");
 460                 end_trace();
 461                 message = message_create(p_serial, epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE);
 462                 message->param.disconnectinfo.cause = 28;
 463                 message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
 464                 message_put(message);
 465                 new_state(PORT_STATE_RELEASE);
 466                 trigger_work(&p_g_delete);
 467                 return;
 468         }
 469
 470         /* attach only if not already */
 471         epointlist = p_epointlist;
 472         while(epointlist) {
 473                 if (epointlist->epoint_id == epoint_id)
 474                         break;
 475                 epointlist = epointlist->next;
 476         }
 477         if (!epointlist)
 478                 epointlist_new(epoint_id);
 479
 480         /* creating l3id */
 481         gsm_trace_header(p_interface_name, this, 0, DIRECTION_OUT);
 482         p_g_callref = new_callref++;
 483         add_trace("callref", "new", "0x%x", p_g_callref);
 484         end_trace();
 485
 486         gsm_trace_header(p_interface_name, this, MNCC_SETUP_REQ, DIRECTION_OUT);
 487         mncc = create_mncc(MNCC_SETUP_REQ, p_g_callref);
 488         if (!strncasecmp(p_dialinginfo.id, "emerg", 5)) {
 489                 mncc->emergency = 1;
 490         } else {
 491                 /* caller info (only clir) */
 492                 switch (p_callerinfo.present) {
 493                         case INFO_PRESENT_ALLOWED:
 494                         mncc->clir.inv = 1;
 495                         break;
 496                         default:
 497                         mncc->clir.sup = 1;
 498                 }
 499                 /* dialing information (mandatory) */
 500                 mncc->fields |= MNCC_F_CALLED;
 501                 mncc->called.type = 0; /* unknown */
 502                 mncc->called.plan = 1; /* isdn */
 503                 SCPY(mncc->called.number, p_dialinginfo.id);
 504                 add_trace("dialing", "number", "%s", mncc->called.number);
 505
 506                 /* bearer capability (mandatory) */
 507                 mncc->fields |= MNCC_F_BEARER_CAP;
 508                 mncc->bearer_cap.coding = 0;
 509                 mncc->bearer_cap.radio = 1;
 510                 mncc->bearer_cap.speech_ctm = 0;
 511                 mncc->bearer_cap.speech_ver[0] = 0;
 512                 mncc->bearer_cap.speech_ver[1] = -1; /* end of list */
 513                 switch (p_capainfo.bearer_capa) {
 514                         case INFO_BC_DATAUNRESTRICTED:
 515                         case INFO_BC_DATARESTRICTED:
 516                         mncc->bearer_cap.transfer = 1;
 517                         break;
 518                         case INFO_BC_SPEECH:
 519                         mncc->bearer_cap.transfer = 0;
 520                         break;
 521                         default:
 522                         mncc->bearer_cap.transfer = 2;
 523                         break;
 524                 }
 525                 switch (p_capainfo.bearer_mode) {
 526                         case INFO_BMODE_PACKET:
 527                         mncc->bearer_cap.mode = 1;
 528                         break;
 529                         default:
 530                         mncc->bearer_cap.mode = 0;
 531                         break;
 532                 }
 533                 /* DTMF supported */
 534                 mncc->fields |= MNCC_F_CCCAP;
 535                 mncc->cccap.dtmf = 1;
 536
 537                 /* request keypad from remote */
 538                 message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_ENABLEKEYPAD);
 539                 message_put(message);
 540         }
 541
 542         end_trace();
 543         send_and_free_mncc(p_g_lcr_gsm, mncc->msg_type, mncc);
 544
 545         new_state(PORT_STATE_OUT_SETUP);
 546
 547         message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_PROCEEDING);
 548         message_put(message);
 549
 550         new_state(PORT_STATE_OUT_PROCEEDING);
 551
 552         p_g_rtp_bridge = 0;
 553 }
 554
 555 void Pgsm_ms::dtmf_statemachine(struct gsm_mncc *mncc)
 556 {
 557         struct gsm_mncc *dtmf;
 558
 559         switch (p_g_dtmf_state) {
 560         case DTMF_ST_SPACE:
 561         case DTMF_ST_IDLE:
 562                 /* end of string */
 563                 if (!p_g_dtmf[p_g_dtmf_index]) {
 564                         PDEBUG(DEBUG_GSM, "done with DTMF\n");
 565                         p_g_dtmf_state = DTMF_ST_IDLE;
 566                         return;
 567                 }
 568                 gsm_trace_header(p_interface_name, this, MNCC_START_DTMF_REQ, DIRECTION_OUT);
 569                 dtmf = create_mncc(MNCC_START_DTMF_REQ, p_g_callref);
 570                 dtmf->keypad = p_g_dtmf[p_g_dtmf_index++];
 571                 p_g_dtmf_state = DTMF_ST_START;
 572                 PDEBUG(DEBUG_GSM, "start DTMF (keypad %c)\n",
 573                         dtmf->keypad);
 574                 end_trace();
 575                 send_and_free_mncc(p_g_lcr_gsm, dtmf->msg_type, dtmf);
 576                 return;
 577         case DTMF_ST_START:
 578                 if (mncc->msg_type != MNCC_START_DTMF_RSP) {
 579                         PDEBUG(DEBUG_GSM, "DTMF was rejected\n");
 580                         return;
 581                 }
 582                 schedule_timer(&p_g_dtmf_timer, 0, 70 * 1000);
 583                 p_g_dtmf_state = DTMF_ST_MARK;
 584                 PDEBUG(DEBUG_GSM, "DTMF is on\n");
 585                 break;
 586         case DTMF_ST_MARK:
 587                 gsm_trace_header(p_interface_name, this, MNCC_STOP_DTMF_REQ, DIRECTION_OUT);
 588                 dtmf = create_mncc(MNCC_STOP_DTMF_REQ, p_g_callref);
 589                 p_g_dtmf_state = DTMF_ST_STOP;
 590                 end_trace();
 591                 send_and_free_mncc(p_g_lcr_gsm, dtmf->msg_type, dtmf);
 592                 return;
 593         case DTMF_ST_STOP:
 594                 schedule_timer(&p_g_dtmf_timer, 0, 120 * 1000);
 595                 p_g_dtmf_state = DTMF_ST_SPACE;
 596                 PDEBUG(DEBUG_GSM, "DTMF is off\n");
 597                 break;
 598         }
 599 }
 600
 601 static int dtmf_timeout(struct lcr_timer *timer, void *instance, int index)
 602 {
 603         class Pgsm_ms *pgsm_ms = (class Pgsm_ms *)instance;
 604
 605         PDEBUG(DEBUG_GSM, "DTMF timer has fired\n");
 606         pgsm_ms->dtmf_statemachine(NULL);
 607
 608         return 0;
 609 }
 610
 611 /* MESSAGE_DTMF */
 612 void Pgsm_ms::message_dtmf(unsigned int epoint_id, int message_id, union parameter *param)
 613 {
 614         char digit = param->dtmf;
 615
 616         if (digit >= 'a' && digit <= 'c')
 617                 digit = digit - 'a' + 'A';
 618         if (!strchr("01234567890*#ABC", digit))
 619                 return;
 620
 621         /* schedule */
 622         if (p_g_dtmf_state == DTMF_ST_IDLE) {
 623                 p_g_dtmf_index = 0;
 624                 p_g_dtmf[0] = '\0';
 625         }
 626         SCCAT(p_g_dtmf, digit);
 627         if (p_g_dtmf_state == DTMF_ST_IDLE)
 628                 dtmf_statemachine(NULL);
 629 }
 630
 631 /* MESSAGE_INFORMATION */
 632 void Pgsm_ms::message_information(unsigned int epoint_id, int message_id, union parameter *param)
 633 {
 634         char digit;
 635         int i;
 636
 637         for (i = 0; i < (int)strlen(param->information.id); i++) {
 638                 digit = param->information.id[i];
 639                 if (digit >= 'a' && digit <= 'c')
 640                         digit = digit - 'a' + 'A';
 641                 if (!strchr("01234567890*#ABC", digit))
 642                         continue;
 643
 644                 /* schedule */
 645                 if (p_g_dtmf_state == DTMF_ST_IDLE) {
 646                         p_g_dtmf_index = 0;
 647                         p_g_dtmf[0] = '\0';
 648                 }
 649                 SCCAT(p_g_dtmf, digit);
 650                 if (p_g_dtmf_state == DTMF_ST_IDLE)
 651                         dtmf_statemachine(NULL);
 652         }
 653 }
 654
 655 /*
 656  * endpoint sends messages to the port
 657  */
 658 int Pgsm_ms::message_epoint(unsigned int epoint_id, int message_id, union parameter *param)
 659 {
 660         struct lcr_msg *message;
 661
 662         if (message_id == MESSAGE_CONNECT) {
 663                 /* request keypad from remote */
 664                 message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_ENABLEKEYPAD);
 665                 message_put(message);
 666         }
 667
 668         if (Pgsm::message_epoint(epoint_id, message_id, param))
 669                 return(1);
 670
 671         switch(message_id) {
 672                 case MESSAGE_SETUP: /* dial-out command received from epoint */
 673                 if (p_state!=PORT_STATE_IDLE)
 674                         break;
 675                 message_setup(epoint_id, message_id, param);
 676                 break;
 677
 678                 case MESSAGE_DTMF:
 679                 message_dtmf(epoint_id, message_id, param);
 680                 break;
 681
 682                 case MESSAGE_INFORMATION:
 683                 message_information(epoint_id, message_id, param);
 684                 break;
 685
 686                 default:
 687                 PDEBUG(DEBUG_GSM, "Pgsm_ms(%s) gsm port with (caller id %s) received unhandled nessage: %d\n", p_name, p_callerinfo.id, message_id);
 688         }
 689
 690         return(1);
 691 }
 692
 693 int gsm_ms_exit(int rc)
 694 {
 695         /* destroy all instances */
 696         while (gsm_ms_first)
 697                 gsm_ms_delete(gsm_ms_first->name);
 698
 699         return rc;
 700 }
 701
 702 int gsm_ms_init(void)
 703 {
 704         return 0;
 705 }
 706
 707 /* add a new GSM mobile instance */
 708 int gsm_ms_new(struct interface *interface)
 709 {
 710         struct lcr_gsm *gsm_ms = gsm_ms_first, **gsm_ms_p = &gsm_ms_first;
 711
 712         while (gsm_ms) {
 713                 gsm_ms_p = &gsm_ms->gsm_next;
 714                 gsm_ms = gsm_ms->gsm_next;
 715         }
 716
 717         PDEBUG(DEBUG_GSM, "GSM: interface for MS '%s' is created\n", interface->gsm_ms_name);
 718
 719         /* create gsm instance */
 720         gsm_ms = (struct lcr_gsm *)MALLOC(sizeof(struct lcr_gsm));
 721
 722         SCPY(gsm_ms->interface_name, interface->name);
 723         gsm_ms->type = LCR_GSM_TYPE_MS;
 724         SCPY(gsm_ms->name, interface->gsm_ms_name);
 725         gsm_ms->sun.sun_family = AF_UNIX;
 726         SPRINT(gsm_ms->sun.sun_path, "/tmp/ms_mncc_%s", gsm_ms->name);
 727
 728         memset(&gsm_ms->socket_retry, 0, sizeof(gsm_ms->socket_retry));
 729         add_timer(&gsm_ms->socket_retry, mncc_socket_retry_cb, gsm_ms, 0);
 730
 731         /* do the initial connect */
 732         mncc_socket_retry_cb(&gsm_ms->socket_retry, gsm_ms, 0);
 733
 734         *gsm_ms_p = gsm_ms;
 735
 736         return 0;
 737 }
 738
 739 int gsm_ms_delete(const char *name)
 740 {
 741         struct lcr_gsm *gsm_ms = gsm_ms_first, **gsm_ms_p = &gsm_ms_first;
 742
 743         PDEBUG(DEBUG_GSM, "GSM: interface for MS '%s' is deleted\n", name);
 744
 745         while (gsm_ms) {
 746                 if (gsm_ms->type == LCR_GSM_TYPE_MS && !strcmp(gsm_ms->name, name))
 747                         break;
 748                 gsm_ms_p = &gsm_ms->gsm_next;
 749                 gsm_ms = gsm_ms->gsm_next;
 750         }
 751
 752         if (!gsm_ms)
 753                 return 0;
 754
 755         if (gsm_ms->mncc_lfd.fd > -1) {
 756                 close(gsm_ms->mncc_lfd.fd);
 757                 unregister_fd(&gsm_ms->mncc_lfd);
 758         }
 759         del_timer(&gsm_ms->socket_retry);
 760
 761         /* remove instance from list */
 762         *gsm_ms_p = gsm_ms->gsm_next;
 763         FREE(gsm_ms, sizeof(struct lcr_gsm));
 764
 765         return 0;
 766 }
 767
 768