gsm_bs.cpp

   1 /*****************************************************************************\
   2 **                                                                           **
   3 ** LCR                                                                       **
   4 **                                                                           **
   5 **---------------------------------------------------------------------------**
   6 ** Copyright: Andreas Eversberg                                              **
   7 **                                                                           **
   8 ** mISDN gsm (BS mode)                                                       **
   9 **                                                                           **
  10 \*****************************************************************************/
  11
  12 #include "main.h"
  13 #include "mncc.h"
  14
  15 struct lcr_gsm *gsm_bs = NULL;
  16
  17 #define PAYLOAD_TYPE_GSM 3
  18
  19 /*
  20  * DTMF stuff
  21  */
  22 unsigned char dtmf_samples[16][8000];
  23 static int dtmf_x[4] = { 1209, 1336, 1477, 1633 };
  24 static int dtmf_y[4] = { 697, 770, 852, 941 };
  25
  26 void generate_dtmf(void)
  27 {
  28         double fx, fy, sample;
  29         int i, x, y;
  30         unsigned char *law;
  31
  32         for (y = 0; y < 4; y++) {
  33                 fy = 2 * 3.1415927 * ((double)dtmf_y[y]) / 8000.0;
  34                 for (x = 0; x < 4; x++) {
  35                         fx = 2 * 3.1415927 * ((double)dtmf_x[x]) / 8000.0;
  36                         law = dtmf_samples[y << 2 | x];
  37                         for (i = 0; i < 8000; i++) {
  38                                 sample = sin(fy * ((double)i)) * 0.251 * 32767.0; /* -6 dB */
  39                                 sample += sin(fx * ((double)i)) * 0.158 * 32767.0; /* -8 dB */
  40                                 *law++ = audio_s16_to_law[(int)sample & 0xffff];
  41                         }
  42                 }
  43         }
  44 }
  45
  46
  47 /*
  48  * constructor
  49  */
  50 Pgsm_bs::Pgsm_bs(int type, char *portname, struct port_settings *settings, struct interface *interface) : Pgsm(type, portname, settings, interface)
  51 {
  52         p_g_lcr_gsm = gsm_bs;
  53         p_g_dtmf = NULL;
  54         p_g_dtmf_index = 0;
  55
  56         PDEBUG(DEBUG_GSM, "Created new GSMBSPort(%s).\n", portname);
  57 }
  58
  59 /*
  60  * destructor
  61  */
  62 Pgsm_bs::~Pgsm_bs()
  63 {
  64         PDEBUG(DEBUG_GSM, "Destroyed GSM BS process(%s).\n", p_name);
  65 }
  66
  67 /* PROCEEDING INDICATION (from MS) */
  68 void Pgsm_bs::call_conf_ind(unsigned int msg_type, unsigned int callref, struct gsm_mncc *mncc)
  69 {
  70         int media_types[8];
  71         unsigned char payload_types[8];
  72         int payloads = 0;
  73
  74         gsm_trace_header(p_g_interface_name, this, msg_type, DIRECTION_IN);
  75         if (mncc->fields & MNCC_F_CAUSE) {
  76                 add_trace("cause", "coding", "%d", mncc->cause.coding);
  77                 add_trace("cause", "location", "%", mncc->cause.location);
  78                 add_trace("cause", "value", "%", mncc->cause.value);
  79         }
  80         end_trace();
  81
  82         new_state(PORT_STATE_OUT_PROCEEDING);
  83
  84         /* get list of offered payload types
  85          * if list ist empty, the FR V1 is selected */
  86         select_payload_type(mncc, payload_types, media_types, &payloads, sizeof(payload_types));
  87         /* if no given payload type is supported, we assume  */
  88         if (!payloads) {
  89                 media_types[0] = MEDIA_TYPE_GSM;
  90                 payload_types[0] = PAYLOAD_TYPE_GSM;
  91                 payloads = 1;
  92         }
  93
  94         /* select first payload type that matches the rtp list */
  95         if (p_g_rtp_bridge) {
  96                 int i, j;
  97
  98                 for (i = 0; i < p_g_rtp_payloads; i++) {
  99                         for (j = 0; j < payloads; j++) {
 100                                 if (p_g_rtp_media_types[i] == media_types[j])
 101                                         break;
 102                         }
 103                         if (j < payloads)
 104                                 break;
 105                 }
 106                 if (i == p_g_rtp_payloads) {
 107                         struct lcr_msg *message;
 108
 109                         /* payload offered by remote RTP is not supported */
 110                         message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_RELEASE);
 111                         message->param.disconnectinfo.cause = 65;
 112                         message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
 113                         message_put(message);
 114                         /* send release */
 115                         mncc = create_mncc(MNCC_REL_REQ, p_g_callref);
 116                         gsm_trace_header(p_g_interface_name, this, MNCC_REL_REQ, DIRECTION_OUT);
 117                         mncc->fields |= MNCC_F_CAUSE;
 118                         mncc->cause.coding = 3;
 119                         mncc->cause.location = LOCATION_PRIVATE_LOCAL;
 120                         mncc->cause.value = 65;
 121                         add_trace("cause", "coding", "%d", mncc->cause.coding);
 122                         add_trace("cause", "location", "%d", mncc->cause.location);
 123                         add_trace("cause", "value", "%d", mncc->cause.value);
 124                         add_trace("reason", NULL, "None of the payload types are supported by MS");
 125                         end_trace();
 126                         send_and_free_mncc(p_g_lcr_gsm, mncc->msg_type, mncc);
 127                         new_state(PORT_STATE_RELEASE);
 128                         trigger_work(&p_g_delete);
 129
 130                         return;
 131                 }
 132                 modify_lchan(p_g_rtp_media_types[i]);
 133                 /* use the payload type from received rtp list, not from locally generated payload types */
 134                 p_g_payload_type = p_g_rtp_payload_types[i];
 135         } else {
 136                 /* modify to first given payload */
 137                 modify_lchan(media_types[0]);
 138                 p_g_payload_type = payload_types[0];
 139         }
 140 }
 141
 142 /* DTMF INDICATION */
 143 void Pgsm_bs::start_dtmf_ind(unsigned int msg_type, unsigned int callref, struct gsm_mncc *mncc)
 144 {
 145         struct gsm_mncc *resp;
 146
 147         gsm_trace_header(p_g_interface_name, this, msg_type, DIRECTION_IN);
 148         add_trace("keypad", NULL, "%c", mncc->keypad);
 149         end_trace();
 150         SPRINT(p_dialinginfo.id, "%c", mncc->keypad);
 151         p_dialinginfo.ntype = INFO_NTYPE_UNKNOWN;
 152
 153         /* send resp */
 154         gsm_trace_header(p_g_interface_name, this, MNCC_START_DTMF_RSP, DIRECTION_OUT);
 155         add_trace("keypad", NULL, "%c", mncc->keypad);
 156         end_trace();
 157         resp = create_mncc(MNCC_START_DTMF_RSP, p_g_callref);
 158         resp->fields |= MNCC_F_KEYPAD;
 159         resp->keypad = mncc->keypad;
 160         send_and_free_mncc(p_g_lcr_gsm, resp->msg_type, resp);
 161
 162         if (p_g_rtp_bridge) {
 163                 class Port *remote = bridge_remote();
 164
 165                 if (remote) {
 166                         struct lcr_msg *message;
 167
 168                         /* send dtmf information, because we bridge RTP directly */
 169                         message = message_create(0, remote->p_serial, EPOINT_TO_PORT, MESSAGE_DTMF);
 170                         message->param.dtmf = mncc->keypad;
 171                         message_put(message);
 172                 }
 173         } else {
 174                 /* generate DTMF tones, since we do audio forwarding inside LCR */
 175                 switch (mncc->keypad) {
 176                         case '1': p_g_dtmf = dtmf_samples[0]; break;
 177                         case '2': p_g_dtmf = dtmf_samples[1]; break;
 178                         case '3': p_g_dtmf = dtmf_samples[2]; break;
 179                         case 'a':
 180                         case 'A': p_g_dtmf = dtmf_samples[3]; break;
 181                         case '4': p_g_dtmf = dtmf_samples[4]; break;
 182                         case '5': p_g_dtmf = dtmf_samples[5]; break;
 183                         case '6': p_g_dtmf = dtmf_samples[6]; break;
 184                         case 'b':
 185                         case 'B': p_g_dtmf = dtmf_samples[7]; break;
 186                         case '7': p_g_dtmf = dtmf_samples[8]; break;
 187                         case '8': p_g_dtmf = dtmf_samples[9]; break;
 188                         case '9': p_g_dtmf = dtmf_samples[10]; break;
 189                         case 'c':
 190                         case 'C': p_g_dtmf = dtmf_samples[11]; break;
 191                         case '*': p_g_dtmf = dtmf_samples[12]; break;
 192                         case '0': p_g_dtmf = dtmf_samples[13]; break;
 193                         case '#': p_g_dtmf = dtmf_samples[14]; break;
 194                         case 'd':
 195                         case 'D': p_g_dtmf = dtmf_samples[15]; break;
 196                 }
 197                 p_g_dtmf_index = 0;
 198         }
 199 }
 200 void Pgsm_bs::stop_dtmf_ind(unsigned int msg_type, unsigned int callref, struct gsm_mncc *mncc)
 201 {
 202         struct gsm_mncc *resp;
 203
 204         gsm_trace_header(p_g_interface_name, this, msg_type, DIRECTION_IN);
 205         add_trace("keypad", NULL, "%c", mncc->keypad);
 206         end_trace();
 207
 208         /* send resp */
 209         gsm_trace_header(p_g_interface_name, this, MNCC_STOP_DTMF_RSP, DIRECTION_OUT);
 210         add_trace("keypad", NULL, "%c", mncc->keypad);
 211         end_trace();
 212         resp = create_mncc(MNCC_STOP_DTMF_RSP, p_g_callref);
 213         resp->keypad = mncc->keypad;
 214         send_and_free_mncc(p_g_lcr_gsm, resp->msg_type, resp);
 215
 216         /* stop DTMF */
 217         p_g_dtmf = NULL;
 218 }
 219
 220 /* HOLD INDICATION */
 221 void Pgsm_bs::hold_ind(unsigned int msg_type, unsigned int callref, struct gsm_mncc *mncc)
 222 {
 223         struct lcr_msg *message;
 224         struct gsm_mncc *resp, *frame;
 225
 226         gsm_trace_header(p_g_interface_name, this, msg_type, DIRECTION_IN);
 227         end_trace();
 228
 229         /* notify the hold of call */
 230         message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_NOTIFY);
 231         message->param.notifyinfo.notify = INFO_NOTIFY_REMOTE_HOLD;
 232         message->param.notifyinfo.local = 1; /* call is held by supplementary service */
 233         message_put(message);
 234
 235         /* acknowledge hold */
 236         gsm_trace_header(p_g_interface_name, this, MNCC_HOLD_CNF, DIRECTION_OUT);
 237         end_trace();
 238         resp = create_mncc(MNCC_HOLD_CNF, p_g_callref);
 239         send_and_free_mncc(p_g_lcr_gsm, resp->msg_type, resp);
 240
 241         /* disable audio */
 242         if (p_g_tch_connected) { /* it should be true */
 243                 gsm_trace_header(p_g_interface_name, this, MNCC_FRAME_DROP, DIRECTION_OUT);
 244                 end_trace();
 245                 frame = create_mncc(MNCC_FRAME_DROP, p_g_callref);
 246                 send_and_free_mncc(p_g_lcr_gsm, frame->msg_type, frame);
 247                 p_g_tch_connected = 0;
 248         }
 249 }
 250
 251
 252 /* RETRIEVE INDICATION */
 253 void Pgsm_bs::retr_ind(unsigned int msg_type, unsigned int callref, struct gsm_mncc *mncc)
 254 {
 255         struct lcr_msg *message;
 256         struct gsm_mncc *resp, *frame;
 257
 258         gsm_trace_header(p_g_interface_name, this, msg_type, DIRECTION_IN);
 259         end_trace();
 260
 261         /* notify the retrieve of call */
 262         message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_NOTIFY);
 263         message->param.notifyinfo.notify = INFO_NOTIFY_REMOTE_RETRIEVAL;
 264         message->param.notifyinfo.local = 1; /* call is retrieved by supplementary service */
 265         message_put(message);
 266
 267         /* acknowledge retr */
 268         gsm_trace_header(p_g_interface_name, this, MNCC_RETRIEVE_CNF, DIRECTION_OUT);
 269         end_trace();
 270         resp = create_mncc(MNCC_RETRIEVE_CNF, p_g_callref);
 271         send_and_free_mncc(p_g_lcr_gsm, resp->msg_type, resp);
 272
 273         /* enable audio */
 274         if (!p_g_tch_connected) { /* it should be true */
 275                 gsm_trace_header(p_g_interface_name, this, MNCC_FRAME_RECV, DIRECTION_OUT);
 276                 end_trace();
 277                 frame = create_mncc(MNCC_FRAME_RECV, p_g_callref);
 278                 send_and_free_mncc(p_g_lcr_gsm, frame->msg_type, frame);
 279                 p_g_tch_connected = 1;
 280         }
 281 }
 282
 283 /*
 284  * select payload type by given list or GSM V1 FR
 285  * return the payload type or 0 if not given
 286  */
 287
 288 void Pgsm_bs::select_payload_type(struct gsm_mncc *mncc, unsigned char *payload_types, int *media_types, int *payloads, int max_payloads)
 289 {
 290         int media_type;
 291         unsigned char payload_type;
 292
 293         *payloads = 0;
 294
 295         gsm_trace_header(p_g_interface_name, this, 1 /* codec negotioation */, DIRECTION_NONE);
 296         if ((mncc->fields & MNCC_F_BEARER_CAP)) {
 297                 /* select preferred payload type from list */
 298                 int i;
 299
 300                 add_trace("bearer", "capa", "given by MS");
 301                 for (i = 0; mncc->bearer_cap.speech_ver[i] >= 0; i++) {
 302                         /* select payload type we support */
 303                         switch (mncc->bearer_cap.speech_ver[i]) {
 304                         case 0:
 305                                 add_trace("speech", "version", "Full Rate given");
 306                                 media_type = MEDIA_TYPE_GSM;
 307                                 payload_type = PAYLOAD_TYPE_GSM;
 308                                 break;
 309                         case 2:
 310                                 add_trace("speech", "version", "EFR given");
 311                                 media_type = MEDIA_TYPE_GSM_EFR;
 312                                 payload_type = 100 + *payloads;
 313                                 break;
 314                         case 4:
 315                                 add_trace("speech", "version", "AMR given");
 316                                 media_type = MEDIA_TYPE_AMR;
 317                                 payload_type = 100 + *payloads;
 318                                 break;
 319                         case 1:
 320                                 add_trace("speech", "version", "Half Rate given");
 321                                 media_type = MEDIA_TYPE_GSM_HR;
 322                                 payload_type = 100 + *payloads;
 323                                 break;
 324                         default:
 325                                 add_trace("speech", "version", "%d given", mncc->bearer_cap.speech_ver[i]);
 326                                 media_type = 0;
 327                                 payload_type = 0;
 328                         }
 329                         /* wen don't support it, so we check the next */
 330                         if (!media_type) {
 331                                 add_trace("speech", "ignored", "Not supported by LCR");
 332                                 continue;
 333                         }
 334                         if (!p_g_rtp_bridge) {
 335                                 if (media_type != MEDIA_TYPE_GSM) {
 336                                         add_trace("speech", "ignored", "Not suitable for LCR");
 337                                         continue;
 338                                 }
 339                         }
 340                         if (*payloads <= max_payloads) {
 341                                 media_types[*payloads] = media_type;
 342                                 payload_types[*payloads] = payload_type;
 343                                 (*payloads)++;
 344                         }
 345                 }
 346         } else {
 347                 add_trace("bearer", "capa", "not given by MS");
 348                 add_trace("speech", "version", "Full Rate given");
 349                 media_types[0] = MEDIA_TYPE_GSM;
 350                 payload_types[0] = PAYLOAD_TYPE_GSM;
 351                 *payloads = 1;
 352         }
 353         if (!(*payloads))
 354                 add_trace("error", "", "All given payload types unsupported");
 355         end_trace();
 356 }
 357
 358 /*
 359  * handles all indications
 360  */
 361 /* SETUP INDICATION */
 362 void Pgsm_bs::setup_ind(unsigned int msg_type, unsigned int callref, struct gsm_mncc *mncc)
 363 {
 364         class Endpoint *epoint;
 365         struct lcr_msg *message;
 366         struct gsm_mncc *proceeding, *frame;
 367         struct interface *interface;
 368         int media_types[8];
 369         unsigned char payload_types[8];
 370         int payloads = 0;
 371
 372         interface = getinterfacebyname(p_g_interface_name);
 373         if (!interface) {
 374                 PERROR("Cannot find interface %s.\n", p_g_interface_name);
 375                 return;
 376         }
 377
 378         /* process given callref */
 379         gsm_trace_header(p_g_interface_name, this, 0, DIRECTION_IN);
 380         add_trace("callref", "new", "0x%x", callref);
 381         if (p_g_callref) {
 382                 /* release in case the ID is already in use */
 383                 add_trace("error", NULL, "callref already in use");
 384                 end_trace();
 385                 mncc = create_mncc(MNCC_REJ_REQ, callref);
 386                 gsm_trace_header(p_g_interface_name, this, MNCC_REJ_REQ, DIRECTION_OUT);
 387                 mncc->fields |= MNCC_F_CAUSE;
 388                 mncc->cause.coding = 3;
 389                 mncc->cause.location = 1;
 390                 mncc->cause.value = 47;
 391                 add_trace("cause", "coding", "%d", mncc->cause.coding);
 392                 add_trace("cause", "location", "%d", mncc->cause.location);
 393                 add_trace("cause", "value", "%d", mncc->cause.value);
 394                 add_trace("reason", NULL, "callref already in use");
 395                 end_trace();
 396                 send_and_free_mncc(p_g_lcr_gsm, mncc->msg_type, mncc);
 397                 new_state(PORT_STATE_RELEASE);
 398                 trigger_work(&p_g_delete);
 399                 return;
 400         }
 401         p_g_callref = callref;
 402         end_trace();
 403
 404         /* caller info */
 405         if (mncc->clir.inv)
 406                 p_callerinfo.present = INFO_PRESENT_RESTRICTED;
 407         else
 408                 p_callerinfo.present = INFO_PRESENT_ALLOWED;
 409         if (mncc->calling.number[0])
 410                 SCPY(p_callerinfo.id, mncc->calling.number);
 411         else
 412                 p_callerinfo.present = INFO_PRESENT_NOTAVAIL;
 413         SCPY(p_callerinfo.imsi, mncc->imsi);
 414         p_callerinfo.screen = INFO_SCREEN_NETWORK;
 415         p_callerinfo.ntype = INFO_NTYPE_UNKNOWN;
 416         SCPY(p_callerinfo.interface, p_g_interface_name);
 417
 418         /* dialing information */
 419         SCAT(p_dialinginfo.id, mncc->called.number);
 420         switch (mncc->called.type) {
 421                 case 0x1:
 422                 p_dialinginfo.ntype = INFO_NTYPE_INTERNATIONAL;
 423                 break;
 424                 case 0x2:
 425                 p_dialinginfo.ntype = INFO_NTYPE_NATIONAL;
 426                 break;
 427                 case 0x4:
 428                 p_dialinginfo.ntype = INFO_NTYPE_SUBSCRIBER;
 429                 break;
 430                 default:
 431                 p_dialinginfo.ntype = INFO_NTYPE_UNKNOWN;
 432                 break;
 433         }
 434         if (mncc->emergency) {
 435                 SCPY(p_dialinginfo.id, "emergency");
 436         }
 437         p_dialinginfo.sending_complete = 1;
 438
 439         /* bearer capability */
 440         p_capainfo.bearer_capa = INFO_BC_SPEECH;
 441         p_capainfo.bearer_info1 = (options.law=='a')?3:2;
 442         p_capainfo.bearer_mode = INFO_BMODE_CIRCUIT;
 443         p_capainfo.source_mode = B_MODE_TRANSPARENT;
 444         p_g_mode = p_capainfo.source_mode;
 445
 446         /* get list of offered payload types
 447          * if list ist empty, the FR V1 is selected */
 448         select_payload_type(mncc, payload_types, media_types, &payloads, sizeof(payload_types));
 449         /* if no given payload type is supported, we assume  */
 450         if (!payloads) {
 451                 media_types[0] = MEDIA_TYPE_GSM;
 452                 payload_types[0] = PAYLOAD_TYPE_GSM;
 453                 payloads = 1;
 454         }
 455 #if 0
 456         /* if no given payload type is supported, we reject the call */
 457         if (!payloads) {
 458                 mncc = create_mncc(MNCC_REJ_REQ, callref);
 459                 gsm_trace_header(p_g_interface_name, this, MNCC_REJ_REQ, DIRECTION_OUT);
 460                 mncc->fields |= MNCC_F_CAUSE;
 461                 mncc->cause.coding = 3;
 462                 mncc->cause.location = 1;
 463                 mncc->cause.value = 65;
 464                 add_trace("cause", "coding", "%d", mncc->cause.coding);
 465                 add_trace("cause", "location", "%d", mncc->cause.location);
 466                 add_trace("cause", "value", "%d", mncc->cause.value);
 467                 add_trace("reason", NULL, "Given speech codec(s) not supported");
 468                 end_trace();
 469                 send_and_free_mncc(p_g_lcr_gsm, mncc->msg_type, mncc);
 470                 new_state(PORT_STATE_RELEASE);
 471                 trigger_work(&p_g_delete);
 472                 return;
 473         }
 474 #endif
 475
 476         /* useruser */
 477
 478         /* what infos did we got ... */
 479         gsm_trace_header(p_g_interface_name, this, msg_type, DIRECTION_IN);
 480         if (p_callerinfo.id[0])
 481                 add_trace("calling", "number", "%s", p_callerinfo.id);
 482         else
 483                 SPRINT(p_callerinfo.id, "imsi-%s", p_callerinfo.imsi);
 484         add_trace("calling", "imsi", "%s", p_callerinfo.imsi);
 485         add_trace("dialing", "number", "%s", p_dialinginfo.id);
 486         end_trace();
 487
 488         /* create endpoint */
 489         if (p_epointlist)
 490                 FATAL("Incoming call but already got an endpoint.\n");
 491         if (!(epoint = new Endpoint(p_serial, 0)))
 492                 FATAL("No memory for Endpoint instance\n");
 493         epoint->ep_app = new_endpointapp(epoint, 0, interface->app); //incoming
 494         epointlist_new(epoint->ep_serial);
 495
 496         /* modify lchan in case of no rtp bridge */
 497         if (!p_g_rtp_bridge)
 498                 modify_lchan(media_types[0]);
 499
 500         /* send call proceeding */
 501         gsm_trace_header(p_g_interface_name, this, MNCC_CALL_PROC_REQ, DIRECTION_OUT);
 502         proceeding = create_mncc(MNCC_CALL_PROC_REQ, p_g_callref);
 503         if (p_g_tones) {
 504                 proceeding->fields |= MNCC_F_PROGRESS;
 505                 proceeding->progress.coding = 3; /* GSM */
 506                 proceeding->progress.location = 1;
 507                 proceeding->progress.descr = 8;
 508                 add_trace("progress", "coding", "%d", proceeding->progress.coding);
 509                 add_trace("progress", "location", "%d", proceeding->progress.location);
 510                 add_trace("progress", "descr", "%d", proceeding->progress.descr);
 511         }
 512         end_trace();
 513         send_and_free_mncc(p_g_lcr_gsm, proceeding->msg_type, proceeding);
 514
 515         new_state(PORT_STATE_IN_PROCEEDING);
 516
 517         if (p_g_tones && !p_g_tch_connected) { /* only if ... */
 518                 gsm_trace_header(p_g_interface_name, this, MNCC_FRAME_RECV, DIRECTION_OUT);
 519                 end_trace();
 520                 frame = create_mncc(MNCC_FRAME_RECV, p_g_callref);
 521                 send_and_free_mncc(p_g_lcr_gsm, frame->msg_type, frame);
 522                 p_g_tch_connected = 1;
 523         }
 524
 525         /* send setup message to endpoit */
 526         message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_SETUP);
 527         message->param.setup.port_type = p_type;
 528 //      message->param.setup.dtmf = 0;
 529         memcpy(&message->param.setup.dialinginfo, &p_dialinginfo, sizeof(struct dialing_info));
 530         memcpy(&message->param.setup.callerinfo, &p_callerinfo, sizeof(struct caller_info));
 531         memcpy(&message->param.setup.capainfo, &p_capainfo, sizeof(struct capa_info));
 532         SCPY((char *)message->param.setup.useruser.data, (char *)mncc->useruser.info);
 533         message->param.setup.useruser.len = strlen(mncc->useruser.info);
 534         message->param.setup.useruser.protocol = mncc->useruser.proto;
 535         if (p_g_rtp_bridge) {
 536                 struct gsm_mncc_rtp *rtp;
 537                 int i;
 538
 539                 PDEBUG(DEBUG_GSM, "Request RTP peer info, before forwarding setup\n");
 540                 p_g_setup_pending = message;
 541                 rtp = (struct gsm_mncc_rtp *) create_mncc(MNCC_RTP_CREATE, p_g_callref);
 542                 send_and_free_mncc(p_g_lcr_gsm, rtp->msg_type, rtp);
 543
 544                 for (i = 0; i < (int)sizeof(message->param.setup.rtpinfo.payload_types) && i < payloads; i++) {
 545                         message->param.setup.rtpinfo.media_types[i] = media_types[i];
 546                         message->param.setup.rtpinfo.payload_types[i] = payload_types[i];
 547                         message->param.setup.rtpinfo.payloads++;
 548                 }
 549
 550         } else
 551                 message_put(message);
 552
 553 }
 554
 555 /*
 556  * BSC sends message to port
 557  */
 558 int message_bsc(struct lcr_gsm *lcr_gsm, int msg_type, void *arg)
 559 {
 560         struct gsm_mncc *mncc = (struct gsm_mncc *)arg;
 561         unsigned int callref = mncc->callref;
 562         class Port *port;
 563         class Pgsm_bs *pgsm_bs = NULL;
 564         char name[64];
 565 //      struct mISDNport *mISDNport;
 566
 567         /* Special messages */
 568         switch(msg_type) {
 569         }
 570
 571         /* find callref */
 572         callref = mncc->callref;
 573         port = port_first;
 574         while(port) {
 575                 if ((port->p_type & PORT_CLASS_GSM_MASK) == PORT_CLASS_GSM_BS) {
 576                         pgsm_bs = (class Pgsm_bs *)port;
 577                         if (pgsm_bs->p_g_callref == callref) {
 578                                 break;
 579                         }
 580                 }
 581                 port = port->next;
 582         }
 583
 584         if (msg_type == GSM_TCHF_FRAME
 585          || msg_type == GSM_TCHF_BAD_FRAME) {
 586                 if (port) {
 587                         /* inject DTMF, if enabled */
 588                         if (pgsm_bs->p_g_dtmf) {
 589                                 unsigned char data[160];
 590                                 int i;
 591
 592                                 for (i = 0; i < 160; i++) {
 593                                         data[i] = pgsm_bs->p_g_dtmf[pgsm_bs->p_g_dtmf_index++];
 594                                         if (pgsm_bs->p_g_dtmf_index == 8000)
 595                                                 pgsm_bs->p_g_dtmf_index = 0;
 596                                 }
 597                                 /* send */
 598                                 pgsm_bs->bridge_tx(data, 160);
 599                         } else
 600                                 pgsm_bs->frame_receive(arg);
 601                         /* if we do not bridge we need to inject audio, if available */
 602                         if (!pgsm_bs->p_bridge || pgsm_bs->p_tone_name[0]) {
 603                                 unsigned char data[160];
 604                                 int i;
 605
 606                                 i = pgsm_bs->read_audio(data, 160);
 607                                 if (i)
 608                                         pgsm_bs->audio_send(data, i);
 609                         }
 610                 }
 611                 return 0;
 612         }
 613
 614         if (!port) {
 615                 struct interface *interface;
 616
 617                 if (msg_type != MNCC_SETUP_IND)
 618                         return(0);
 619
 620                 interface = getinterfacebyname(lcr_gsm->interface_name);
 621                 if (!interface) {
 622                         struct gsm_mncc *rej;
 623
 624                         rej = create_mncc(MNCC_REJ_REQ, callref);
 625                         rej->fields |= MNCC_F_CAUSE;
 626                         rej->cause.coding = 3;
 627                         rej->cause.location = 1;
 628                         rej->cause.value = 27;
 629                         gsm_trace_header(NULL, NULL, MNCC_REJ_REQ, DIRECTION_OUT);
 630                         add_trace("cause", "coding", "%d", rej->cause.coding);
 631                         add_trace("cause", "location", "%d", rej->cause.location);
 632                         add_trace("cause", "value", "%d", rej->cause.value);
 633                         add_trace("reason", NULL, "interface %s not found", lcr_gsm->interface_name);
 634                         end_trace();
 635                         send_and_free_mncc(lcr_gsm, rej->msg_type, rej);
 636                         return 0;
 637                 }
 638                 /* creating port object, transparent until setup with hdlc */
 639                 SPRINT(name, "%s-%d-in", interface->name, 0);
 640                 if (!(pgsm_bs = new Pgsm_bs(PORT_TYPE_GSM_BS_IN, name, NULL, interface)))
 641                         FATAL("Cannot create Port instance.\n");
 642         }
 643
 644         switch(msg_type) {
 645                 case MNCC_SETUP_IND:
 646                 pgsm_bs->setup_ind(msg_type, callref, mncc);
 647                 break;
 648
 649                 case MNCC_RTP_CREATE:
 650                 pgsm_bs->rtp_create_ind(msg_type, callref, mncc);
 651                 break;
 652
 653                 case MNCC_RTP_CONNECT:
 654                 pgsm_bs->rtp_connect_ind(msg_type, callref, mncc);
 655                 break;
 656
 657                 case MNCC_START_DTMF_IND:
 658                 pgsm_bs->start_dtmf_ind(msg_type, callref, mncc);
 659                 break;
 660
 661                 case MNCC_STOP_DTMF_IND:
 662                 pgsm_bs->stop_dtmf_ind(msg_type, callref, mncc);
 663                 break;
 664
 665                 case MNCC_CALL_CONF_IND:
 666                 pgsm_bs->call_conf_ind(msg_type, callref, mncc);
 667                 break;
 668
 669                 case MNCC_ALERT_IND:
 670                 pgsm_bs->alert_ind(msg_type, callref, mncc);
 671                 break;
 672
 673                 case MNCC_SETUP_CNF:
 674                 pgsm_bs->setup_cnf(msg_type, callref, mncc);
 675                 break;
 676
 677                 case MNCC_SETUP_COMPL_IND:
 678                 pgsm_bs->setup_compl_ind(msg_type, callref, mncc);
 679                 break;
 680
 681                 case MNCC_DISC_IND:
 682                 pgsm_bs->disc_ind(msg_type, callref, mncc);
 683                 break;
 684
 685                 case MNCC_REL_IND:
 686                 case MNCC_REL_CNF:
 687                 case MNCC_REJ_IND:
 688                 pgsm_bs->rel_ind(msg_type, callref, mncc);
 689                 break;
 690
 691                 case MNCC_NOTIFY_IND:
 692                 pgsm_bs->notify_ind(msg_type, callref, mncc);
 693                 break;
 694
 695                 case MNCC_HOLD_IND:
 696                 pgsm_bs->hold_ind(msg_type, callref, mncc);
 697                 break;
 698
 699                 case MNCC_RETRIEVE_IND:
 700                 pgsm_bs->retr_ind(msg_type, callref, mncc);
 701                 break;
 702
 703                 default:
 704                 PDEBUG(DEBUG_GSM, "Pgsm_bs(%s) gsm port with (caller id %s) received unhandled nessage: 0x%x\n", pgsm_bs->p_name, pgsm_bs->p_callerinfo.id, msg_type);
 705         }
 706         return(0);
 707 }
 708
 709 /* MESSAGE_SETUP */
 710 void Pgsm_bs::message_setup(unsigned int epoint_id, int message_id, union parameter *param)
 711 {
 712         struct lcr_msg *message;
 713         struct epoint_list *epointlist;
 714         struct gsm_mncc *mncc;
 715
 716         /* copy setup infos to port */
 717         memcpy(&p_callerinfo, &param->setup.callerinfo, sizeof(p_callerinfo));
 718         memcpy(&p_dialinginfo, &param->setup.dialinginfo, sizeof(p_dialinginfo));
 719         memcpy(&p_capainfo, &param->setup.capainfo, sizeof(p_capainfo));
 720         memcpy(&p_redirinfo, &param->setup.redirinfo, sizeof(p_redirinfo));
 721
 722         /* no GSM MNCC connection */
 723         if (p_g_lcr_gsm->mncc_lfd.fd < 0) {
 724                 gsm_trace_header(p_g_interface_name, this, MNCC_SETUP_REQ, DIRECTION_OUT);
 725                 add_trace("failure", NULL, "No MNCC connection.");
 726                 end_trace();
 727                 message = message_create(p_serial, epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE);
 728                 message->param.disconnectinfo.cause = 41; // temp. failure.
 729                 message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
 730                 message_put(message);
 731                 new_state(PORT_STATE_RELEASE);
 732                 trigger_work(&p_g_delete);
 733                 return;
 734         }
 735
 736         /* no number */
 737         if (!p_dialinginfo.id[0]) {
 738                 gsm_trace_header(p_g_interface_name, this, MNCC_SETUP_REQ, DIRECTION_OUT);
 739                 add_trace("failure", NULL, "No dialed subscriber given.");
 740                 end_trace();
 741                 message = message_create(p_serial, epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE);
 742                 message->param.disconnectinfo.cause = 28;
 743                 message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
 744                 message_put(message);
 745                 new_state(PORT_STATE_RELEASE);
 746                 trigger_work(&p_g_delete);
 747                 return;
 748         }
 749
 750         /* unsupported codec for RTP bridge */
 751         if (param->setup.rtpinfo.port) {
 752                 int i;
 753
 754                 p_g_rtp_payloads = 0;
 755                 gsm_trace_header(p_g_interface_name, this, 1 /* codec negotioation */, DIRECTION_NONE);
 756                 for (i = 0; i < param->setup.rtpinfo.payloads; i++) {
 757                         switch (param->setup.rtpinfo.media_types[i]) {
 758                         case MEDIA_TYPE_GSM:
 759                         case MEDIA_TYPE_GSM_EFR:
 760                         case MEDIA_TYPE_AMR:
 761                         case MEDIA_TYPE_GSM_HR:
 762                                 add_trace("rtp", "payload", "%s:%d supported", media_type2name(param->setup.rtpinfo.media_types[i]), param->setup.rtpinfo.payload_types[i]);
 763                                 if (p_g_rtp_payloads < (int)sizeof(p_g_rtp_payload_types)) {
 764                                         p_g_rtp_media_types[p_g_rtp_payloads] = param->setup.rtpinfo.media_types[i];
 765                                         p_g_rtp_payload_types[p_g_rtp_payloads] = param->setup.rtpinfo.payload_types[i];
 766                                         p_g_rtp_payloads++;
 767                                 }
 768                                 break;
 769                         default:
 770                                 add_trace("rtp", "payload", "%s:%d unsupported", media_type2name(param->setup.rtpinfo.media_types[i]), param->setup.rtpinfo.payload_types[i]);
 771                         }
 772                 }
 773                 end_trace();
 774                 if (!p_g_rtp_payloads) {
 775                         gsm_trace_header(p_g_interface_name, this, MNCC_SETUP_REQ, DIRECTION_OUT);
 776                         add_trace("failure", NULL, "No payload given that is supported by GSM");
 777                         end_trace();
 778                         message = message_create(p_serial, epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE);
 779                         message->param.disconnectinfo.cause = 65;
 780                         message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
 781                         message_put(message);
 782                         new_state(PORT_STATE_RELEASE);
 783                         trigger_work(&p_g_delete);
 784                         return;
 785                 }
 786         }
 787
 788 //              SCPY(&p_m_tones_dir, param->setup.ext.tones_dir);
 789         /* screen outgoing caller id */
 790         do_screen(1, p_callerinfo.id, sizeof(p_callerinfo.id), &p_callerinfo.ntype, &p_callerinfo.present, p_g_interface_name);
 791
 792         /* attach only if not already */
 793         epointlist = p_epointlist;
 794         while(epointlist) {
 795                 if (epointlist->epoint_id == epoint_id)
 796                         break;
 797                 epointlist = epointlist->next;
 798         }
 799         if (!epointlist)
 800                 epointlist_new(epoint_id);
 801
 802         /* creating l3id */
 803         gsm_trace_header(p_g_interface_name, this, 0, DIRECTION_OUT);
 804         p_g_callref = new_callref++;
 805         add_trace("callref", "new", "0x%x", p_g_callref);
 806         end_trace();
 807
 808         gsm_trace_header(p_g_interface_name, this, MNCC_SETUP_REQ, DIRECTION_OUT);
 809         mncc = create_mncc(MNCC_SETUP_REQ, p_g_callref);
 810         /* caller information */
 811         mncc->fields |= MNCC_F_CALLING;
 812         mncc->calling.plan = 1;
 813         switch (p_callerinfo.ntype) {
 814                 case INFO_NTYPE_UNKNOWN:
 815                 mncc->calling.type = 0x0;
 816                 break;
 817                 case INFO_NTYPE_INTERNATIONAL:
 818                 mncc->calling.type = 0x1;
 819                 break;
 820                 case INFO_NTYPE_NATIONAL:
 821                 mncc->calling.type = 0x2;
 822                 break;
 823                 case INFO_NTYPE_SUBSCRIBER:
 824                 mncc->calling.type = 0x4;
 825                 break;
 826                 default: /* INFO_NTYPE_NOTPRESENT */
 827                 mncc->fields &= ~MNCC_F_CALLING;
 828                 break;
 829         }
 830         switch (p_callerinfo.screen) {
 831                 case INFO_SCREEN_USER:
 832                 mncc->calling.screen = 0;
 833                 break;
 834                 default: /* INFO_SCREEN_NETWORK */
 835                 mncc->calling.screen = 3;
 836                 break;
 837         }
 838         switch (p_callerinfo.present) {
 839                 case INFO_PRESENT_ALLOWED:
 840                 mncc->calling.present = 0;
 841                 break;
 842                 case INFO_PRESENT_RESTRICTED:
 843                 mncc->calling.present = 1;
 844                 break;
 845                 default: /* INFO_PRESENT_NOTAVAIL */
 846                 mncc->calling.present = 2;
 847                 break;
 848         }
 849         if (mncc->fields & MNCC_F_CALLING) {
 850                 SCPY(mncc->calling.number, p_callerinfo.id);
 851                 add_trace("calling", "type", "%d", mncc->calling.type);
 852                 add_trace("calling", "plan", "%d", mncc->calling.plan);
 853                 add_trace("calling", "present", "%d", mncc->calling.present);
 854                 add_trace("calling", "screen", "%d", mncc->calling.screen);
 855                 add_trace("calling", "number", "%s", mncc->calling.number);
 856         }
 857         /* dialing information */
 858         mncc->fields |= MNCC_F_CALLED;
 859         if (!strncmp(p_dialinginfo.id, "imsi-", 5)) {
 860                 SCPY(mncc->imsi, p_dialinginfo.id+5);
 861                 add_trace("dialing", "imsi", "%s", mncc->imsi);
 862         } else {
 863                 SCPY(mncc->called.number, p_dialinginfo.id);
 864                 add_trace("dialing", "number", "%s", mncc->called.number);
 865         }
 866
 867         /* sending user-user */
 868
 869         /* redirecting number */
 870         mncc->fields |= MNCC_F_REDIRECTING;
 871         mncc->redirecting.plan = 1;
 872         switch (p_redirinfo.ntype) {
 873                 case INFO_NTYPE_UNKNOWN:
 874                 mncc->redirecting.type = 0x0;
 875                 break;
 876                 case INFO_NTYPE_INTERNATIONAL:
 877                 mncc->redirecting.type = 0x1;
 878                 break;
 879                 case INFO_NTYPE_NATIONAL:
 880                 mncc->redirecting.type = 0x2;
 881                 break;
 882                 case INFO_NTYPE_SUBSCRIBER:
 883                 mncc->redirecting.type = 0x4;
 884                 break;
 885                 default: /* INFO_NTYPE_NOTPRESENT */
 886                 mncc->fields &= ~MNCC_F_REDIRECTING;
 887                 break;
 888         }
 889         switch (p_redirinfo.screen) {
 890                 case INFO_SCREEN_USER:
 891                 mncc->redirecting.screen = 0;
 892                 break;
 893                 default: /* INFO_SCREE_NETWORK */
 894                 mncc->redirecting.screen = 3;
 895                 break;
 896         }
 897         switch (p_redirinfo.present) {
 898                 case INFO_PRESENT_ALLOWED:
 899                 mncc->redirecting.present = 0;
 900                 break;
 901                 case INFO_PRESENT_RESTRICTED:
 902                 mncc->redirecting.present = 1;
 903                 break;
 904                 default: /* INFO_PRESENT_NOTAVAIL */
 905                 mncc->redirecting.present = 2;
 906                 break;
 907         }
 908         /* sending redirecting number only in ntmode */
 909         if (mncc->fields & MNCC_F_REDIRECTING) {
 910                 SCPY(mncc->redirecting.number, p_redirinfo.id);
 911                 add_trace("redir", "type", "%d", mncc->redirecting.type);
 912                 add_trace("redir", "plan", "%d", mncc->redirecting.plan);
 913                 add_trace("redir", "present", "%d", mncc->redirecting.present);
 914                 add_trace("redir", "screen", "%d", mncc->redirecting.screen);
 915                 add_trace("redir", "number", "%s", mncc->redirecting.number);
 916         }
 917
 918         end_trace();
 919         send_and_free_mncc(p_g_lcr_gsm, mncc->msg_type, mncc);
 920
 921         new_state(PORT_STATE_OUT_SETUP);
 922
 923         message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_PROCEEDING);
 924         message_put(message);
 925
 926         /* RTP bridge */
 927         if (param->setup.rtpinfo.port) {
 928                 p_g_rtp_bridge = 1;
 929                 p_g_rtp_ip_remote = param->setup.rtpinfo.ip;
 930                 p_g_rtp_port_remote = param->setup.rtpinfo.port;
 931         } else
 932                 p_g_rtp_bridge = 0;
 933 }
 934
 935 /*
 936  * endpoint sends messages to the port
 937  */
 938 int Pgsm_bs::message_epoint(unsigned int epoint_id, int message_id, union parameter *param)
 939 {
 940         if (Pgsm::message_epoint(epoint_id, message_id, param))
 941                 return(1);
 942
 943         switch(message_id) {
 944                 case MESSAGE_SETUP: /* dial-out command received from epoint */
 945                 if (p_state!=PORT_STATE_IDLE)
 946                         break;
 947                 message_setup(epoint_id, message_id, param);
 948                 break;
 949
 950                 default:
 951                 PDEBUG(DEBUG_GSM, "Pgsm_bs(%s) gsm port with (caller id %s) received unhandled nessage: %d\n", p_name, p_callerinfo.id, message_id);
 952         }
 953
 954         return(1);
 955 }
 956
 957 int gsm_bs_exit(int rc)
 958 {
 959         /* free gsm instance */
 960         if (gsm_bs) {
 961                 if (gsm_bs->mncc_lfd.fd > -1) {
 962                         close(gsm_bs->mncc_lfd.fd);
 963                         unregister_fd(&gsm_bs->mncc_lfd);
 964                 }
 965
 966                 del_timer(&gsm_bs->socket_retry);
 967                 free(gsm_bs);
 968                 gsm_bs = NULL;
 969         }
 970
 971
 972         return(rc);
 973 }
 974
 975 int gsm_bs_init(struct interface *interface)
 976 {
 977         /* create gsm instance */
 978         gsm_bs = (struct lcr_gsm *)MALLOC(sizeof(struct lcr_gsm));
 979
 980         SCPY(gsm_bs->interface_name, interface->name);
 981         gsm_bs->type = LCR_GSM_TYPE_NETWORK;
 982         gsm_bs->sun.sun_family = AF_UNIX;
 983         SCPY(gsm_bs->sun.sun_path, "/tmp/bsc_mncc");
 984
 985         memset(&gsm_bs->socket_retry, 0, sizeof(gsm_bs->socket_retry));
 986         add_timer(&gsm_bs->socket_retry, mncc_socket_retry_cb, gsm_bs, 0);
 987
 988         /* do the initial connect */
 989         mncc_socket_retry_cb(&gsm_bs->socket_retry, gsm_bs, 0);
 990
 991         generate_dtmf();
 992
 993         return 0;
 994 }