/*****************************************************************************\ ** ** ** LCR ** ** ** **---------------------------------------------------------------------------** ** Copyright: Andreas Eversberg ** ** ** ** mISDN gsm ** ** ** \*****************************************************************************/ #include "main.h" extern "C" { #include "openbsc/gsm_data.h" #include "openbsc/mncc.h" #include "openbsc/trau_frame.h" #include "openbsc/select.h" #include "openbsc/debug.h" #include "openbsc/e1_input.h" #include "bootstrap.h" #include "gsm_audio.h" #undef AF_ISDN #undef PF_ISDN extern int AF_ISDN; #define PF_ISDN AF_ISDN } struct lcr_gsm *gsm = NULL; static unsigned int new_callref = 1; /* * create and send mncc message */ static struct gsm_mncc *create_mncc(int msg_type, unsigned int callref) { struct gsm_mncc *mncc; mncc = (struct gsm_mncc *)MALLOC(sizeof(struct gsm_mncc)); mncc->msg_type = msg_type; mncc->callref = callref; return (mncc); } static int send_and_free_mncc(struct gsm_network *net, unsigned int msg_type, void *data) { int ret; ret = mncc_send(net, msg_type, data); free(data); return ret; } /* * constructor */ Pgsm::Pgsm(int type, struct mISDNport *mISDNport, char *portname, struct port_settings *settings, int channel, int exclusive, int mode) : PmISDN(type, mISDNport, portname, settings, channel, exclusive, mode) { p_callerinfo.itype = (mISDNport->ifport->interface->extension)?INFO_ITYPE_ISDN_EXTENSION:INFO_ITYPE_ISDN; p_m_g_callref = 0; p_m_g_mode = 0; p_m_g_gsm_b_sock = -1; p_m_g_gsm_b_index = -1; p_m_g_gsm_b_active = 0; p_m_g_notify_pending = NULL; p_m_g_decoder = gsm_audio_create(); p_m_g_encoder = gsm_audio_create(); if (!p_m_g_encoder || !p_m_g_decoder) { PERROR("Failed to create GSM audio codec instance\n"); p_m_delete = 1; } p_m_g_rxpos = 0; p_m_g_tch_connected = 0; PDEBUG(DEBUG_GSM, "Created new mISDNPort(%s).\n", portname); } /* * destructor */ Pgsm::~Pgsm() { PDEBUG(DEBUG_GSM, "Destroyed GSM process(%s).\n", p_name); /* remove queued message */ if (p_m_g_notify_pending) message_free(p_m_g_notify_pending); /* close audio transfer socket */ if (p_m_g_gsm_b_sock > -1) bchannel_close(); /* close codec */ if (p_m_g_encoder) gsm_audio_destroy(p_m_g_encoder); if (p_m_g_decoder) gsm_audio_destroy(p_m_g_decoder); } /* close bsc side bchannel */ void Pgsm::bchannel_close(void) { if (p_m_g_gsm_b_sock > -1) close(p_m_g_gsm_b_sock); p_m_g_gsm_b_sock = -1; p_m_g_gsm_b_index = -1; p_m_g_gsm_b_active = 0; } /* open bsc side bchannel */ int Pgsm::bchannel_open(int index) { int ret; unsigned int on = 1; struct sockaddr_mISDN addr; struct mISDNhead act; if (p_m_g_gsm_b_sock > -1) { PERROR("Socket already created for index %d\n", index); return(-EIO); } /* open socket */ ret = p_m_g_gsm_b_sock = socket(PF_ISDN, SOCK_DGRAM, ISDN_P_B_RAW); if (ret < 0) { PERROR("Failed to open bchannel-socket for index %d\n", index); bchannel_close(); return(ret); } /* set nonblocking io */ ret = ioctl(p_m_g_gsm_b_sock, FIONBIO, &on); if (ret < 0) { PERROR("Failed to set bchannel-socket index %d into nonblocking IO\n", index); bchannel_close(); return(ret); } /* bind socket to bchannel */ addr.family = AF_ISDN; addr.dev = gsm->gsm_port; addr.channel = index+1+(index>15); ret = bind(p_m_g_gsm_b_sock, (struct sockaddr *)&addr, sizeof(addr)); if (ret < 0) { PERROR("Failed to bind bchannel-socket for index %d\n", index); bchannel_close(); return(ret); } /* activate bchannel */ PDEBUG(DEBUG_GSM, "Activating GSM side channel index %i.\n", index); act.prim = PH_ACTIVATE_REQ; act.id = 0; ret = sendto(p_m_g_gsm_b_sock, &act, MISDN_HEADER_LEN, 0, NULL, 0); if (ret < 0) { PERROR("Failed to activate index %d\n", index); bchannel_close(); return(ret); } p_m_g_gsm_b_index = index; return(0); } /* receive from bchannel */ void Pgsm::bchannel_receive(struct mISDNhead *hh, unsigned char *data, int len) { int i, j, k; unsigned char frame[33]; struct decoded_trau_frame tf; /* encoder init failed */ if (!p_m_g_encoder) return; /* (currently) not connected, so don't flood tch! */ if (!p_m_g_tch_connected) return; /* write to rx buffer */ while(len--) { p_m_g_rxdata[p_m_g_rxpos++] = audio_law_to_s32[*data++]; if (p_m_g_rxpos == 160) { p_m_g_rxpos = 0; /* encode data */ gsm_audio_encode(p_m_g_encoder, p_m_g_rxdata, frame); /* set c-bits and t-bits */ tf.c_bits[0] = 1; tf.c_bits[1] = 1; tf.c_bits[2] = 1; tf.c_bits[3] = 0; tf.c_bits[4] = 0; memset(&tf.c_bits[5], 0, 6); memset(&tf.c_bits[11], 1, 10); memset(&tf.t_bits[0], 1, 4); /* reassemble d-bits */ i = 0; j = 0; k = 0; while(i < 260) { tf.d_bits[i] = (frame[j] >> k) & 1; if (++k == 8) { k = 0; j++; } i++; } trau_send(&tf); } } } /* transmit to bchannel */ void Pgsm::bchannel_send(unsigned int prim, unsigned int id, unsigned char *data, int len) { unsigned char buf[MISDN_HEADER_LEN+len]; struct mISDNhead *hh = (struct mISDNhead *)buf; int ret; if (!p_m_g_gsm_b_active) return; /* make and send frame */ hh->prim = PH_DATA_REQ; hh->id = 0; memcpy(buf+MISDN_HEADER_LEN, data, len); ret = sendto(p_m_g_gsm_b_sock, buf, MISDN_HEADER_LEN+len, 0, NULL, 0); if (ret <= 0) PERROR("Failed to send to socket index %d\n", index); } void Pgsm::trau_send(void *_tf) { struct decoded_trau_frame *tf = (struct decoded_trau_frame *)_tf; unsigned char data[sizeof(struct gsm_trau_frame) + sizeof(struct decoded_trau_frame)]; struct gsm_trau_frame *frame = (struct gsm_trau_frame *)data; frame->msg_type = GSM_TRAU_FRAME; frame->callref = p_m_g_callref; memcpy(frame->data, tf, sizeof(struct decoded_trau_frame)); mncc_send((struct gsm_network *)gsm->network, frame->msg_type, frame); } void Pgsm::trau_receive(void *_frame) { struct gsm_trau_frame *frm = (struct gsm_trau_frame *)_frame; struct decoded_trau_frame *tf = (struct decoded_trau_frame *)frm->data; //struct decoded_trau_frame *tf = (struct decoded_trau_frame *)_frame; unsigned char frame[33]; signed short samples[160]; unsigned char data[160]; int i, j, k; if (!p_m_g_decoder) return; // printf("got trau %d %d %d %d %d\n", tf->c_bits[0], tf->c_bits[1], tf->c_bits[2], tf->c_bits[3], tf->c_bits[4]); if (tf->c_bits[0]!=0 || tf->c_bits[1]!=0 || tf->c_bits[2]!=0 || tf->c_bits[3]!=1 || tf->c_bits[4]!=0) PERROR("illegal trau (C1-C5) %d %d %d %d %d\n", tf->c_bits[0], tf->c_bits[1], tf->c_bits[2], tf->c_bits[3], tf->c_bits[4]); /* set GSM_MAGIC */ memset(&frame, 0, sizeof(frame)); // frame[0] = 0xd << 4; /* reassemble bits */ i = 0; j = 0; k = 0; while(i < 260) { if (tf->d_bits[i] > 1) PERROR("fix!\n"); frame[j] |= (tf->d_bits[i] << k); if (++k == 8) { k = 0; j++; } i++; } /* decode */ gsm_audio_decode(p_m_g_decoder, frame, samples); for (i = 0; i < 160; i++) { data[i] = audio_s16_to_law[samples[i] & 0xffff]; } /* send */ bchannel_send(PH_DATA_REQ, 0, data, 160); } /* * create trace **/ static void gsm_trace_header(struct mISDNport *mISDNport, class PmISDN *port, unsigned int msg_type, int direction) { char msgtext[64]; /* select message and primitive text */ SCPY(msgtext, get_mncc_name(msg_type)); /* add direction */ if (direction == DIRECTION_OUT) SCAT(msgtext, " MSC->BSC"); else SCAT(msgtext, " MSC<-BSC"); /* init trace with given values */ start_trace(mISDNport?mISDNport->portnum:-1, mISDNport?(mISDNport->ifport?mISDNport->ifport->interface:NULL):NULL, port?numberrize_callerinfo(port->p_callerinfo.id, port->p_callerinfo.ntype, options.national, options.international):NULL, port?port->p_dialinginfo.id:NULL, direction, CATEGORY_CH, port?port->p_serial:0, msgtext); } /* select bchannel */ int Pgsm::hunt_bchannel(void) { int channel; int i; chan_trace_header(p_m_mISDNport, this, "CHANNEL SELECTION (setup)", DIRECTION_NONE); add_trace("channel", "reserved", "%d", p_m_mISDNport->b_reserved); if (p_m_mISDNport->b_reserved >= p_m_mISDNport->b_num) { // of out chan.. add_trace("conclusion", NULL, "all channels are reserved"); end_trace(); return(-34); // no channel } /* find channel */ i = 0; channel = 0; while(i < p_m_mISDNport->b_num) { if (p_m_mISDNport->b_port[i] == NULL) { channel = i+1+(i>=15); break; } i++; } if (!channel) { add_trace("conclusion", NULL, "no channel available"); end_trace(); return(-6); // channel unacceptable } add_trace("conclusion", NULL, "channel available"); add_trace("connect", "channel", "%d", channel); end_trace(); return(channel); } /* * handles all indications */ /* SETUP INDICATION */ void Pgsm::setup_ind(unsigned int msg_type, unsigned int callref, struct gsm_mncc *mncc) { int ret; class Endpoint *epoint; struct lcr_msg *message; int channel; struct gsm_mncc *mode, *proceeding, *frame; /* emergency shutdown */ printf("%d %d\n", mncc->emergency, !gsm->conf.noemergshut); if (mncc->emergency && !gsm->conf.noemergshut) { start_trace(p_m_mISDNport->portnum, p_m_mISDNport->ifport->interface, NULL, NULL, DIRECTION_NONE, CATEGORY_CH, 0, "EMERGENCY SHUTDOWN (due to received emergency call)"); end_trace(); quit = 1; } /* process given callref */ l1l2l3_trace_header(p_m_mISDNport, this, L3_NEW_L3ID_IND, DIRECTION_IN); add_trace("callref", "new", "0x%x", callref); if (p_m_g_callref) { /* release in case the ID is already in use */ add_trace("error", NULL, "callref already in use"); end_trace(); mncc = create_mncc(MNCC_REJ_REQ, callref); gsm_trace_header(p_m_mISDNport, this, MNCC_REJ_REQ, DIRECTION_OUT); mncc->cause = 1; mncc->cause_coding = 3; mncc->cause_location = 1; mncc->cause_value = 47; add_trace("cause", "coding", "%d", mncc->cause_coding); add_trace("cause", "location", "%d", mncc->cause_location); add_trace("cause", "value", "%d", mncc->cause_value); add_trace("reason", NULL, "callref already in use"); end_trace(); send_and_free_mncc((struct gsm_network *)gsm->network, mncc->msg_type, mncc); new_state(PORT_STATE_RELEASE); p_m_delete = 1; return; } p_m_g_callref = callref; end_trace(); /* if blocked, release call with MT_RELEASE_COMPLETE */ if (p_m_mISDNport->ifport->block) { mncc = create_mncc(MNCC_REJ_REQ, p_m_g_callref); gsm_trace_header(p_m_mISDNport, this, MNCC_REJ_REQ, DIRECTION_OUT); mncc->cause = 1; mncc->cause_coding = 3; mncc->cause_location = 1; mncc->cause_value = 27; add_trace("cause", "coding", "%d", mncc->cause_coding); add_trace("cause", "location", "%d", mncc->cause_location); add_trace("cause", "value", "%d", mncc->cause_value); add_trace("reason", NULL, "port is blocked"); end_trace(); send_and_free_mncc((struct gsm_network *)gsm->network, mncc->msg_type, mncc); new_state(PORT_STATE_RELEASE); p_m_delete = 1; return; } /* caller info */ if (mncc->clir_inv) p_callerinfo.present = INFO_PRESENT_RESTRICTED; else p_callerinfo.present = INFO_PRESENT_ALLOWED; if (mncc->calling_number[0]) SCPY(p_callerinfo.id, mncc->calling_number); else p_callerinfo.present = INFO_PRESENT_NOTAVAIL; SCPY(p_callerinfo.imsi, mncc->imsi); p_callerinfo.screen = INFO_SCREEN_NETWORK; p_callerinfo.ntype = INFO_NTYPE_UNKNOWN; p_callerinfo.isdn_port = p_m_portnum; SCPY(p_callerinfo.interface, p_m_mISDNport->ifport->interface->name); /* dialing information */ SCAT(p_dialinginfo.id, mncc->called_number); switch (mncc->called_type) { case 0x1: p_dialinginfo.ntype = INFO_NTYPE_INTERNATIONAL; break; case 0x2: p_dialinginfo.ntype = INFO_NTYPE_NATIONAL; break; case 0x4: p_dialinginfo.ntype = INFO_NTYPE_SUBSCRIBER; break; default: p_dialinginfo.ntype = INFO_NTYPE_UNKNOWN; break; } if (mncc->emergency) { SCPY(p_dialinginfo.id, "emergency"); } p_dialinginfo.sending_complete = 1; /* bearer capability */ // todo p_capainfo.bearer_capa = INFO_BC_SPEECH; p_capainfo.bearer_info1 = (options.law=='a')?3:2; p_capainfo.bearer_mode = INFO_BMODE_CIRCUIT; p_capainfo.source_mode = B_MODE_TRANSPARENT; p_m_g_mode = p_capainfo.source_mode; /* useruser */ /* hunt channel */ ret = channel = hunt_bchannel(); if (ret < 0) goto no_channel; /* open channel */ ret = seize_bchannel(channel, 1); if (ret < 0) { no_channel: mncc = create_mncc(MNCC_REJ_REQ, p_m_g_callref); gsm_trace_header(p_m_mISDNport, this, MNCC_REJ_REQ, DIRECTION_OUT); mncc->cause = 1; mncc->cause_coding = 3; mncc->cause_location = 1; mncc->cause_value = 34; add_trace("cause", "coding", "%d", mncc->cause_coding); add_trace("cause", "location", "%d", mncc->cause_location); add_trace("cause", "value", "%d", mncc->cause_value); add_trace("reason", NULL, "no channel"); end_trace(); send_and_free_mncc((struct gsm_network *)gsm->network, mncc->msg_type, mncc); new_state(PORT_STATE_RELEASE); p_m_delete = 1; return; } bchannel_event(p_m_mISDNport, p_m_b_index, B_EVENT_USE); if (bchannel_open(p_m_b_index)) goto no_channel; /* what infos did we got ... */ gsm_trace_header(p_m_mISDNport, this, msg_type, DIRECTION_IN); if (p_callerinfo.id[0]) add_trace("calling", "number", "%s", p_callerinfo.id); else SPRINT(p_callerinfo.id, "imsi-%s", p_callerinfo.imsi); add_trace("calling", "imsi", "%s", p_callerinfo.imsi); add_trace("dialing", "number", "%s", p_dialinginfo.id); end_trace(); /* create endpoint */ if (p_epointlist) FATAL("Incoming call but already got an endpoint.\n"); if (!(epoint = new Endpoint(p_serial, 0))) FATAL("No memory for Endpoint instance\n"); if (!(epoint->ep_app = new DEFAULT_ENDPOINT_APP(epoint, 0))) //incoming FATAL("No memory for Endpoint Application instance\n"); epointlist_new(epoint->ep_serial); /* modify lchan to GSM codec V1 */ gsm_trace_header(p_m_mISDNport, this, MNCC_LCHAN_MODIFY, DIRECTION_OUT); mode = create_mncc(MNCC_LCHAN_MODIFY, p_m_g_callref); mode->lchan_mode = 0x01; /* GSM V1 */ add_trace("mode", NULL, "0x%02x", mode->lchan_mode); end_trace(); send_and_free_mncc((struct gsm_network *)gsm->network, mode->msg_type, mode); /* send call proceeding */ gsm_trace_header(p_m_mISDNport, this, MNCC_CALL_PROC_REQ, DIRECTION_OUT); proceeding = create_mncc(MNCC_CALL_PROC_REQ, p_m_g_callref); if (p_m_mISDNport->tones) { proceeding->progress = 1; proceeding->progress_coding = 3; /* GSM */ proceeding->progress_location = 1; proceeding->progress_descr = 8; add_trace("progress", "coding", "%d", proceeding->progress_coding); add_trace("progress", "location", "%d", proceeding->progress_location); add_trace("progress", "descr", "%d", proceeding->progress_descr); } end_trace(); send_and_free_mncc((struct gsm_network *)gsm->network, proceeding->msg_type, proceeding); new_state(PORT_STATE_IN_PROCEEDING); if (p_m_mISDNport->tones && !p_m_g_tch_connected) { /* only if ... */ gsm_trace_header(p_m_mISDNport, this, MNCC_FRAME_RECV, DIRECTION_OUT); end_trace(); frame = create_mncc(MNCC_FRAME_RECV, p_m_g_callref); send_and_free_mncc((struct gsm_network *)gsm->network, frame->msg_type, frame); p_m_g_tch_connected = 1; } /* send setup message to endpoit */ message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_SETUP); message->param.setup.isdn_port = p_m_portnum; message->param.setup.port_type = p_type; // message->param.setup.dtmf = 0; memcpy(&message->param.setup.dialinginfo, &p_dialinginfo, sizeof(struct dialing_info)); memcpy(&message->param.setup.callerinfo, &p_callerinfo, sizeof(struct caller_info)); memcpy(&message->param.setup.capainfo, &p_capainfo, sizeof(struct capa_info)); SCPY((char *)message->param.setup.useruser.data, (char *)mncc->useruser_info); message->param.setup.useruser.len = strlen(mncc->useruser_info); message->param.setup.useruser.protocol = mncc->useruser_proto; message_put(message); } /* DTMF INDICATION */ void Pgsm::start_dtmf_ind(unsigned int msg_type, unsigned int callref, struct gsm_mncc *mncc) { struct lcr_msg *message; struct gsm_mncc *resp; gsm_trace_header(p_m_mISDNport, this, msg_type, DIRECTION_IN); add_trace("keypad", NULL, "%c", mncc->keypad); end_trace(); SPRINT(p_dialinginfo.id, "%c", mncc->keypad); p_dialinginfo.ntype = INFO_NTYPE_UNKNOWN; /* send resp */ gsm_trace_header(p_m_mISDNport, this, MNCC_START_DTMF_RSP, DIRECTION_OUT); add_trace("keypad", NULL, "%c", mncc->keypad); end_trace(); resp = create_mncc(MNCC_START_DTMF_RSP, p_m_g_callref); resp->keypad = mncc->keypad; send_and_free_mncc((struct gsm_network *)gsm->network, resp->msg_type, resp); /* send dialing information */ message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_INFORMATION); memcpy(&message->param.information, &p_dialinginfo, sizeof(struct dialing_info)); message_put(message); } void Pgsm::stop_dtmf_ind(unsigned int msg_type, unsigned int callref, struct gsm_mncc *mncc) { struct gsm_mncc *resp; gsm_trace_header(p_m_mISDNport, this, msg_type, DIRECTION_IN); add_trace("keypad", NULL, "%c", mncc->keypad); end_trace(); /* send resp */ gsm_trace_header(p_m_mISDNport, this, MNCC_STOP_DTMF_RSP, DIRECTION_OUT); add_trace("keypad", NULL, "%c", mncc->keypad); end_trace(); resp = create_mncc(MNCC_STOP_DTMF_RSP, p_m_g_callref); resp->keypad = mncc->keypad; send_and_free_mncc((struct gsm_network *)gsm->network, resp->msg_type, resp); } /* PROCEEDING INDICATION */ void Pgsm::call_conf_ind(unsigned int msg_type, unsigned int callref, struct gsm_mncc *mncc) { struct gsm_mncc *mode; gsm_trace_header(p_m_mISDNport, this, msg_type, DIRECTION_IN); if (mncc->cause) { add_trace("cause", "coding", "%d", mncc->cause_coding); add_trace("cause", "location", "%", mncc->cause_location); add_trace("cause", "value", "%", mncc->cause_value); } end_trace(); /* modify lchan to GSM codec V1 */ gsm_trace_header(p_m_mISDNport, this, MNCC_LCHAN_MODIFY, DIRECTION_OUT); mode = create_mncc(MNCC_LCHAN_MODIFY, p_m_g_callref); mode->lchan_mode = 0x01; /* GSM V1 */ add_trace("mode", NULL, "0x%02x", mode->lchan_mode); end_trace(); send_and_free_mncc((struct gsm_network *)gsm->network, mode->msg_type, mode); } /* ALERTING INDICATION */ void Pgsm::alert_ind(unsigned int msg_type, unsigned int callref, struct gsm_mncc *mncc) { struct lcr_msg *message; gsm_trace_header(p_m_mISDNport, this, msg_type, DIRECTION_IN); end_trace(); message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_ALERTING); message_put(message); new_state(PORT_STATE_OUT_ALERTING); } /* CONNECT INDICATION */ void Pgsm::setup_cnf(unsigned int msg_type, unsigned int callref, struct gsm_mncc *mncc) { struct gsm_mncc *resp, *frame; struct lcr_msg *message; gsm_trace_header(p_m_mISDNport, this, msg_type, DIRECTION_IN); end_trace(); SCPY(p_connectinfo.id, mncc->calling_number); SCPY(p_connectinfo.imsi, mncc->imsi); p_connectinfo.present = INFO_PRESENT_ALLOWED; p_connectinfo.screen = INFO_SCREEN_NETWORK; p_connectinfo.ntype = INFO_NTYPE_UNKNOWN; p_connectinfo.isdn_port = p_m_portnum; SCPY(p_connectinfo.interface, p_m_mISDNport->ifport->interface->name); /* send resp */ gsm_trace_header(p_m_mISDNport, this, MNCC_SETUP_COMPL_REQ, DIRECTION_OUT); if (p_connectinfo.id[0]) add_trace("connect", "number", "%s", p_connectinfo.id); else SPRINT(p_connectinfo.id, "imsi-%s", p_connectinfo.imsi); add_trace("connect", "imsi", "%s", p_connectinfo.imsi); resp = create_mncc(MNCC_SETUP_COMPL_REQ, p_m_g_callref); end_trace(); send_and_free_mncc((struct gsm_network *)gsm->network, resp->msg_type, resp); message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_CONNECT); memcpy(&message->param.connectinfo, &p_connectinfo, sizeof(struct connect_info)); message_put(message); new_state(PORT_STATE_CONNECT); if (!p_m_g_tch_connected) { /* only if ... */ gsm_trace_header(p_m_mISDNport, this, MNCC_FRAME_RECV, DIRECTION_OUT); end_trace(); frame = create_mncc(MNCC_FRAME_RECV, p_m_g_callref); send_and_free_mncc((struct gsm_network *)gsm->network, frame->msg_type, frame); p_m_g_tch_connected = 1; } } /* CONNECT ACK INDICATION */ void Pgsm::setup_compl_ind(unsigned int msg_type, unsigned int callref, struct gsm_mncc *mncc) { struct gsm_mncc *frame; gsm_trace_header(p_m_mISDNport, this, msg_type, DIRECTION_IN); end_trace(); new_state(PORT_STATE_CONNECT); if (!p_m_g_tch_connected) { /* only if ... */ gsm_trace_header(p_m_mISDNport, this, MNCC_FRAME_RECV, DIRECTION_OUT); end_trace(); frame = create_mncc(MNCC_FRAME_RECV, p_m_g_callref); send_and_free_mncc((struct gsm_network *)gsm->network, frame->msg_type, frame); p_m_g_tch_connected = 1; } } /* DISCONNECT INDICATION */ void Pgsm::disc_ind(unsigned int msg_type, unsigned int callref, struct gsm_mncc *mncc) { struct lcr_msg *message; int cause = 16, location = 0; struct gsm_mncc *resp; gsm_trace_header(p_m_mISDNport, this, msg_type, DIRECTION_IN); if (mncc->cause) { location = mncc->cause_location; cause = mncc->cause_value; add_trace("cause", "coding", "%d", mncc->cause_coding); add_trace("cause", "location", "%d", location); add_trace("cause", "value", "%d", cause); } end_trace(); /* send release */ resp = create_mncc(MNCC_REL_REQ, p_m_g_callref); gsm_trace_header(p_m_mISDNport, this, MNCC_REL_REQ, DIRECTION_OUT); #if 0 resp->cause = 1; resp->cause_coding = 3; resp->cause_location = 1; resp->cause_value = cause; add_trace("cause", "coding", "%d", resp->cause_coding); add_trace("cause", "location", "%d", resp->cause_location); add_trace("cause", "value", "%d", resp->cause_value); #endif end_trace(); send_and_free_mncc((struct gsm_network *)gsm->network, resp->msg_type, resp); /* sending release to endpoint */ while(p_epointlist) { message = message_create(p_serial, p_epointlist->epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE); message->param.disconnectinfo.cause = cause; message->param.disconnectinfo.location = location; message_put(message); /* remove epoint */ free_epointlist(p_epointlist); } new_state(PORT_STATE_RELEASE); p_m_delete = 1; } /* CC_RELEASE INDICATION */ void Pgsm::rel_ind(unsigned int msg_type, unsigned int callref, struct gsm_mncc *mncc) { int location = 0, cause = 16; struct lcr_msg *message; gsm_trace_header(p_m_mISDNport, this, msg_type, DIRECTION_IN); if (mncc->cause) { location = mncc->cause_location; cause = mncc->cause_value; add_trace("cause", "coding", "%d", mncc->cause_coding); add_trace("cause", "location", "%d", mncc->cause_location); add_trace("cause", "value", "%d", mncc->cause_value); } end_trace(); /* sending release to endpoint */ while(p_epointlist) { message = message_create(p_serial, p_epointlist->epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE); message->param.disconnectinfo.cause = cause; message->param.disconnectinfo.location = location; message_put(message); /* remove epoint */ free_epointlist(p_epointlist); } new_state(PORT_STATE_RELEASE); p_m_delete = 1; } /* NOTIFY INDICATION */ void Pgsm::notify_ind(unsigned int msg_type, unsigned int callref, struct gsm_mncc *mncc) { gsm_trace_header(p_m_mISDNport, this, msg_type, DIRECTION_IN); end_trace(); } /* HOLD INDICATION */ void Pgsm::hold_ind(unsigned int msg_type, unsigned int callref, struct gsm_mncc *mncc) { struct lcr_msg *message; struct gsm_mncc *resp, *frame; gsm_trace_header(p_m_mISDNport, this, msg_type, DIRECTION_IN); end_trace(); /* notify the hold of call */ message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_NOTIFY); message->param.notifyinfo.notify = INFO_NOTIFY_REMOTE_HOLD; message->param.notifyinfo.local = 1; /* call is held by supplementary service */ message_put(message); /* acknowledge hold */ gsm_trace_header(p_m_mISDNport, this, MNCC_HOLD_CNF, DIRECTION_OUT); end_trace(); resp = create_mncc(MNCC_HOLD_CNF, p_m_g_callref); send_and_free_mncc((struct gsm_network *)gsm->network, resp->msg_type, resp); /* disable audio */ if (p_m_g_tch_connected) { /* it should be true */ gsm_trace_header(p_m_mISDNport, this, MNCC_FRAME_DROP, DIRECTION_OUT); end_trace(); frame = create_mncc(MNCC_FRAME_DROP, p_m_g_callref); send_and_free_mncc((struct gsm_network *)gsm->network, frame->msg_type, frame); p_m_g_tch_connected = 0; } } /* RETRIEVE INDICATION */ void Pgsm::retr_ind(unsigned int msg_type, unsigned int callref, struct gsm_mncc *mncc) { struct lcr_msg *message; struct gsm_mncc *resp, *frame; gsm_trace_header(p_m_mISDNport, this, msg_type, DIRECTION_IN); end_trace(); /* notify the retrieve of call */ message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_NOTIFY); message->param.notifyinfo.notify = INFO_NOTIFY_REMOTE_RETRIEVAL; message->param.notifyinfo.local = 1; /* call is retrieved by supplementary service */ message_put(message); /* acknowledge retr */ gsm_trace_header(p_m_mISDNport, this, MNCC_RETRIEVE_CNF, DIRECTION_OUT); end_trace(); resp = create_mncc(MNCC_RETRIEVE_CNF, p_m_g_callref); send_and_free_mncc((struct gsm_network *)gsm->network, resp->msg_type, resp); /* enable audio */ if (!p_m_g_tch_connected) { /* it should be true */ gsm_trace_header(p_m_mISDNport, this, MNCC_FRAME_RECV, DIRECTION_OUT); end_trace(); frame = create_mncc(MNCC_FRAME_RECV, p_m_g_callref); send_and_free_mncc((struct gsm_network *)gsm->network, frame->msg_type, frame); p_m_g_tch_connected = 1; } } /* * BSC sends message to port */ static int message_bcs(struct gsm_network *net, int msg_type, void *arg) { struct gsm_mncc *mncc = (struct gsm_mncc *)arg; unsigned int callref = mncc->callref; class Port *port; class Pgsm *pgsm = NULL; char name[64]; struct mISDNport *mISDNport; /* Special messages */ switch(msg_type) { } /* find callref */ callref = mncc->callref; port = port_first; while(port) { if ((port->p_type & PORT_CLASS_mISDN_MASK) == PORT_CLASS_mISDN_GSM) { pgsm = (class Pgsm *)port; if (pgsm->p_m_g_callref == callref) { break; } } port = port->next; } if (msg_type == GSM_TRAU_FRAME) { if (port) pgsm->trau_receive((struct gsm_trau_frame *)arg); return 0; } if (!port) { if (msg_type != MNCC_SETUP_IND) return(0); /* find gsm port */ mISDNport = mISDNport_first; while(mISDNport) { if (mISDNport->gsm) break; mISDNport = mISDNport->next; } if (!mISDNport) { struct gsm_mncc *rej; rej = create_mncc(MNCC_REJ_REQ, callref); rej->cause = 1; rej->cause_coding = 3; rej->cause_location = 1; rej->cause_value = 27; gsm_trace_header(NULL, NULL, MNCC_REJ_REQ, DIRECTION_OUT); add_trace("cause", "coding", "%d", rej->cause_coding); add_trace("cause", "location", "%d", rej->cause_location); add_trace("cause", "value", "%d", rej->cause_value); end_trace(); send_and_free_mncc((struct gsm_network *)gsm->network, rej->msg_type, rej); return 0; } /* creating port object, transparent until setup with hdlc */ SPRINT(name, "%s-%d-in", mISDNport->ifport->interface->name, mISDNport->portnum); if (!(pgsm = new Pgsm(PORT_TYPE_GSM_IN, mISDNport, name, NULL, 0, 0, B_MODE_TRANSPARENT))) FATAL("Cannot create Port instance.\n"); } switch(msg_type) { case MNCC_SETUP_IND: pgsm->setup_ind(msg_type, callref, mncc); break; case MNCC_START_DTMF_IND: pgsm->start_dtmf_ind(msg_type, callref, mncc); break; case MNCC_STOP_DTMF_IND: pgsm->stop_dtmf_ind(msg_type, callref, mncc); break; case MNCC_CALL_CONF_IND: pgsm->call_conf_ind(msg_type, callref, mncc); break; case MNCC_ALERT_IND: pgsm->alert_ind(msg_type, callref, mncc); break; case MNCC_SETUP_CNF: pgsm->setup_cnf(msg_type, callref, mncc); break; case MNCC_SETUP_COMPL_IND: pgsm->setup_compl_ind(msg_type, callref, mncc); break; case MNCC_DISC_IND: pgsm->disc_ind(msg_type, callref, mncc); break; case MNCC_REL_IND: case MNCC_REL_CNF: case MNCC_REJ_IND: pgsm->rel_ind(msg_type, callref, mncc); break; case MNCC_NOTIFY_IND: pgsm->notify_ind(msg_type, callref, mncc); break; case MNCC_HOLD_IND: pgsm->hold_ind(msg_type, callref, mncc); break; case MNCC_RETRIEVE_IND: pgsm->retr_ind(msg_type, callref, mncc); break; default: PDEBUG(DEBUG_GSM, "Pgsm(%s) gsm port with (caller id %s) received unhandled nessage: 0x%x\n", pgsm->p_name, pgsm->p_callerinfo.id, msg_type); } return(0); } /* MESSAGE_SETUP */ void Pgsm::message_setup(unsigned int epoint_id, int message_id, union parameter *param) { struct lcr_msg *message; int ret; struct epoint_list *epointlist; struct gsm_mncc *mncc; int channel; /* copy setup infos to port */ memcpy(&p_callerinfo, ¶m->setup.callerinfo, sizeof(p_callerinfo)); memcpy(&p_dialinginfo, ¶m->setup.dialinginfo, sizeof(p_dialinginfo)); memcpy(&p_capainfo, ¶m->setup.capainfo, sizeof(p_capainfo)); memcpy(&p_redirinfo, ¶m->setup.redirinfo, sizeof(p_redirinfo)); /* no number */ if (!p_dialinginfo.id[0]) { gsm_trace_header(p_m_mISDNport, this, MNCC_SETUP_REQ, DIRECTION_OUT); add_trace("failure", NULL, "No dialed subscriber given."); end_trace(); message = message_create(p_serial, epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE); message->param.disconnectinfo.cause = 28; message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL; message_put(message); new_state(PORT_STATE_RELEASE); p_m_delete = 1; return; } /* release if port is blocked */ if (p_m_mISDNport->ifport->block) { gsm_trace_header(p_m_mISDNport, this, MNCC_SETUP_REQ, DIRECTION_OUT); add_trace("failure", NULL, "Port blocked."); end_trace(); message = message_create(p_serial, epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE); message->param.disconnectinfo.cause = 27; // temp. unavail. message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL; message_put(message); new_state(PORT_STATE_RELEASE); p_m_delete = 1; return; } /* hunt channel */ ret = channel = hunt_bchannel(); if (ret < 0) goto no_channel; /* open channel */ ret = seize_bchannel(channel, 1); if (ret < 0) { no_channel: gsm_trace_header(p_m_mISDNport, this, MNCC_SETUP_REQ, DIRECTION_OUT); add_trace("failure", NULL, "No internal audio channel available."); end_trace(); message = message_create(p_serial, epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE); message->param.disconnectinfo.cause = 34; message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL; message_put(message); new_state(PORT_STATE_RELEASE); p_m_delete = 1; return; } bchannel_event(p_m_mISDNport, p_m_b_index, B_EVENT_USE); if (bchannel_open(p_m_b_index)) goto no_channel; // SCPY(&p_m_tones_dir, param->setup.ext.tones_dir); /* screen outgoing caller id */ do_screen(1, p_callerinfo.id, sizeof(p_callerinfo.id), &p_callerinfo.ntype, &p_callerinfo.present, p_m_mISDNport->ifport->interface); /* attach only if not already */ epointlist = p_epointlist; while(epointlist) { if (epointlist->epoint_id == epoint_id) break; epointlist = epointlist->next; } if (!epointlist) epointlist_new(epoint_id); /* creating l3id */ l1l2l3_trace_header(p_m_mISDNport, this, L3_NEW_L3ID_REQ, DIRECTION_OUT); p_m_g_callref = new_callref++; add_trace("callref", "new", "0x%x", p_m_g_callref); end_trace(); gsm_trace_header(p_m_mISDNport, this, MNCC_SETUP_REQ, DIRECTION_OUT); mncc = create_mncc(MNCC_SETUP_REQ, p_m_g_callref); /* caller information */ mncc->calling = 1; mncc->calling_plan = 1; switch (p_callerinfo.ntype) { case INFO_NTYPE_UNKNOWN: mncc->calling_type = 0x0; break; case INFO_NTYPE_INTERNATIONAL: mncc->calling_type = 0x1; break; case INFO_NTYPE_NATIONAL: mncc->calling_type = 0x2; break; case INFO_NTYPE_SUBSCRIBER: mncc->calling_type = 0x4; break; default: /* INFO_NTYPE_NOTPRESENT */ mncc->calling = 0; break; } switch (p_callerinfo.screen) { case INFO_SCREEN_USER: mncc->calling_screen = 0; break; default: /* INFO_SCREEN_NETWORK */ mncc->calling_screen = 3; break; } switch (p_callerinfo.present) { case INFO_PRESENT_ALLOWED: mncc->calling_present = 0; break; case INFO_PRESENT_RESTRICTED: mncc->calling_present = 1; break; default: /* INFO_PRESENT_NOTAVAIL */ mncc->calling_present = 2; break; } if (mncc->calling) { SCPY(mncc->calling_number, p_callerinfo.id); add_trace("calling", "type", "%d", mncc->calling_type); add_trace("calling", "plan", "%d", mncc->calling_plan); add_trace("calling", "present", "%d", mncc->calling_present); add_trace("calling", "screen", "%d", mncc->calling_screen); add_trace("calling", "number", "%s", mncc->calling_number); } /* dialing information */ mncc->called = 1; if (!strncmp(p_dialinginfo.id, "imsi-", 5)) { SCPY(mncc->imsi, p_dialinginfo.id+5); add_trace("dialing", "imsi", "%s", mncc->imsi); } else { SCPY(mncc->called_number, p_dialinginfo.id); add_trace("dialing", "number", "%s", mncc->called_number); } /* sending user-user */ /* redirecting number */ mncc->redirecting = 1; mncc->redirecting_plan = 1; switch (p_redirinfo.ntype) { case INFO_NTYPE_UNKNOWN: mncc->redirecting_type = 0x0; break; case INFO_NTYPE_INTERNATIONAL: mncc->redirecting_type = 0x1; break; case INFO_NTYPE_NATIONAL: mncc->redirecting_type = 0x2; break; case INFO_NTYPE_SUBSCRIBER: mncc->redirecting_type = 0x4; break; default: /* INFO_NTYPE_NOTPRESENT */ mncc->redirecting = 0; break; } switch (p_redirinfo.screen) { case INFO_SCREEN_USER: mncc->redirecting_screen = 0; break; default: /* INFO_SCREE_NETWORK */ mncc->redirecting_screen = 3; break; } switch (p_redirinfo.present) { case INFO_PRESENT_ALLOWED: mncc->redirecting_present = 0; break; case INFO_PRESENT_RESTRICTED: mncc->redirecting_present = 1; break; default: /* INFO_PRESENT_NOTAVAIL */ mncc->redirecting_present = 2; break; } /* sending redirecting number only in ntmode */ if (mncc->redirecting) { SCPY(mncc->redirecting_number, p_redirinfo.id); add_trace("redir", "type", "%d", mncc->redirecting_type); add_trace("redir", "plan", "%d", mncc->redirecting_plan); add_trace("redir", "present", "%d", mncc->redirecting_present); add_trace("redir", "screen", "%d", mncc->redirecting_screen); add_trace("redir", "number", "%s", mncc->redirecting_number); } /* bearer capability */ //todo end_trace(); send_and_free_mncc((struct gsm_network *)gsm->network, mncc->msg_type, mncc); new_state(PORT_STATE_OUT_SETUP); message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_PROCEEDING); message_put(message); new_state(PORT_STATE_OUT_PROCEEDING); } /* MESSAGE_NOTIFY */ void Pgsm::message_notify(unsigned int epoint_id, int message_id, union parameter *param) { struct gsm_mncc *mncc; int notify; printf("if = %d\n", param->notifyinfo.notify); if (param->notifyinfo.notify>INFO_NOTIFY_NONE) { notify = param->notifyinfo.notify & 0x7f; if (p_state!=PORT_STATE_CONNECT /*&& p_state!=PORT_STATE_IN_PROCEEDING*/ && p_state!=PORT_STATE_IN_ALERTING) { /* queue notification */ if (p_m_g_notify_pending) message_free(p_m_g_notify_pending); p_m_g_notify_pending = message_create(ACTIVE_EPOINT(p_epointlist), p_serial, EPOINT_TO_PORT, message_id); memcpy(&p_m_g_notify_pending->param, param, sizeof(union parameter)); } else { /* sending notification */ gsm_trace_header(p_m_mISDNport, this, MNCC_NOTIFY_REQ, DIRECTION_OUT); add_trace("notify", NULL, "%d", notify); end_trace(); mncc = create_mncc(MNCC_NOTIFY_REQ, p_m_g_callref); mncc->notify = notify; send_and_free_mncc((struct gsm_network *)gsm->network, mncc->msg_type, mncc); } } } /* MESSAGE_ALERTING */ void Pgsm::message_alerting(unsigned int epoint_id, int message_id, union parameter *param) { struct gsm_mncc *mncc; /* send alert */ gsm_trace_header(p_m_mISDNport, this, MNCC_ALERT_REQ, DIRECTION_OUT); mncc = create_mncc(MNCC_ALERT_REQ, p_m_g_callref); if (p_m_mISDNport->tones) { mncc->progress = 1; mncc->progress_coding = 3; /* GSM */ mncc->progress_location = 1; mncc->progress_descr = 8; add_trace("progress", "coding", "%d", mncc->progress_coding); add_trace("progress", "location", "%d", mncc->progress_location); add_trace("progress", "descr", "%d", mncc->progress_descr); } end_trace(); send_and_free_mncc((struct gsm_network *)gsm->network, mncc->msg_type, mncc); new_state(PORT_STATE_IN_ALERTING); if (p_m_mISDNport->tones && !p_m_g_tch_connected) { /* only if ... */ gsm_trace_header(p_m_mISDNport, this, MNCC_FRAME_RECV, DIRECTION_OUT); end_trace(); mncc = create_mncc(MNCC_FRAME_RECV, p_m_g_callref); send_and_free_mncc((struct gsm_network *)gsm->network, mncc->msg_type, mncc); p_m_g_tch_connected = 1; } } /* MESSAGE_CONNECT */ void Pgsm::message_connect(unsigned int epoint_id, int message_id, union parameter *param) { struct gsm_mncc *mncc; /* copy connected information */ memcpy(&p_connectinfo, ¶m->connectinfo, sizeof(p_connectinfo)); /* screen outgoing caller id */ do_screen(1, p_connectinfo.id, sizeof(p_connectinfo.id), &p_connectinfo.ntype, &p_connectinfo.present, p_m_mISDNport->ifport->interface); /* send connect */ mncc = create_mncc(MNCC_SETUP_RSP, p_m_g_callref); gsm_trace_header(p_m_mISDNport, this, MNCC_SETUP_RSP, DIRECTION_OUT); /* caller information */ mncc->connected = 1; mncc->connected_plan = 1; switch (p_callerinfo.ntype) { case INFO_NTYPE_UNKNOWN: mncc->connected_type = 0x0; break; case INFO_NTYPE_INTERNATIONAL: mncc->connected_type = 0x1; break; case INFO_NTYPE_NATIONAL: mncc->connected_type = 0x2; break; case INFO_NTYPE_SUBSCRIBER: mncc->connected_type = 0x4; break; default: /* INFO_NTYPE_NOTPRESENT */ mncc->connected = 0; break; } switch (p_callerinfo.screen) { case INFO_SCREEN_USER: mncc->connected_screen = 0; break; default: /* INFO_SCREEN_NETWORK */ mncc->connected_screen = 3; break; } switch (p_callerinfo.present) { case INFO_PRESENT_ALLOWED: mncc->connected_present = 0; break; case INFO_PRESENT_RESTRICTED: mncc->connected_present = 1; break; default: /* INFO_PRESENT_NOTAVAIL */ mncc->connected_present = 2; break; } if (mncc->connected) { SCPY(mncc->connected_number, p_connectinfo.id); add_trace("connected", "type", "%d", mncc->connected_type); add_trace("connected", "plan", "%d", mncc->connected_plan); add_trace("connected", "present", "%d", mncc->connected_present); add_trace("connected", "screen", "%d", mncc->connected_screen); add_trace("connected", "number", "%s", mncc->connected_number); } end_trace(); send_and_free_mncc((struct gsm_network *)gsm->network, mncc->msg_type, mncc); new_state(PORT_STATE_CONNECT_WAITING); } /* MESSAGE_DISCONNECT */ void Pgsm::message_disconnect(unsigned int epoint_id, int message_id, union parameter *param) { struct gsm_mncc *mncc; /* send disconnect */ mncc = create_mncc(MNCC_DISC_REQ, p_m_g_callref); gsm_trace_header(p_m_mISDNport, this, MNCC_DISC_REQ, DIRECTION_OUT); if (p_m_mISDNport->tones) { mncc->progress = 1; mncc->progress_coding = 3; /* GSM */ mncc->progress_location = 1; mncc->progress_descr = 8; add_trace("progress", "coding", "%d", mncc->progress_coding); add_trace("progress", "location", "%d", mncc->progress_location); add_trace("progress", "descr", "%d", mncc->progress_descr); } mncc->cause = 1; mncc->cause_coding = 3; mncc->cause_location = param->disconnectinfo.location; mncc->cause_value = param->disconnectinfo.cause; add_trace("cause", "coding", "%d", mncc->cause_coding); add_trace("cause", "location", "%d", mncc->cause_location); add_trace("cause", "value", "%d", mncc->cause_value); end_trace(); send_and_free_mncc((struct gsm_network *)gsm->network, mncc->msg_type, mncc); new_state(PORT_STATE_OUT_DISCONNECT); if (p_m_mISDNport->tones && !p_m_g_tch_connected) { /* only if ... */ gsm_trace_header(p_m_mISDNport, this, MNCC_FRAME_RECV, DIRECTION_OUT); end_trace(); mncc = create_mncc(MNCC_FRAME_RECV, p_m_g_callref); send_and_free_mncc((struct gsm_network *)gsm->network, mncc->msg_type, mncc); p_m_g_tch_connected = 1; } } /* MESSAGE_RELEASE */ void Pgsm::message_release(unsigned int epoint_id, int message_id, union parameter *param) { struct gsm_mncc *mncc; /* send release */ mncc = create_mncc(MNCC_REL_REQ, p_m_g_callref); gsm_trace_header(p_m_mISDNport, this, MNCC_REL_REQ, DIRECTION_OUT); mncc->cause = 1; mncc->cause_coding = 3; mncc->cause_location = param->disconnectinfo.location; mncc->cause_value = param->disconnectinfo.cause; add_trace("cause", "coding", "%d", mncc->cause_coding); add_trace("cause", "location", "%d", mncc->cause_location); add_trace("cause", "value", "%d", mncc->cause_value); end_trace(); send_and_free_mncc((struct gsm_network *)gsm->network, mncc->msg_type, mncc); new_state(PORT_STATE_RELEASE); p_m_delete = 1; return; } /* * endpoint sends messages to the port */ int Pgsm::message_epoint(unsigned int epoint_id, int message_id, union parameter *param) { if (PmISDN::message_epoint(epoint_id, message_id, param)) return(1); switch(message_id) { case MESSAGE_SETUP: /* dial-out command received from epoint */ if (p_state!=PORT_STATE_IDLE) break; message_setup(epoint_id, message_id, param); break; case MESSAGE_NOTIFY: /* display and notifications */ message_notify(epoint_id, message_id, param); break; // case MESSAGE_FACILITY: /* facility message */ // message_facility(epoint_id, message_id, param); // break; case MESSAGE_PROCEEDING: /* message not handles */ break; case MESSAGE_ALERTING: /* call of endpoint is ringing */ if (p_state!=PORT_STATE_IN_PROCEEDING) break; message_alerting(epoint_id, message_id, param); if (p_m_g_notify_pending) { /* send pending notify message during connect */ message_notify(ACTIVE_EPOINT(p_epointlist), p_m_g_notify_pending->type, &p_m_g_notify_pending->param); message_free(p_m_g_notify_pending); p_m_g_notify_pending = NULL; } break; case MESSAGE_CONNECT: /* call of endpoint is connected */ if (p_state!=PORT_STATE_IN_PROCEEDING && p_state!=PORT_STATE_IN_ALERTING) break; message_connect(epoint_id, message_id, param); if (p_m_g_notify_pending) { /* send pending notify message during connect */ message_notify(ACTIVE_EPOINT(p_epointlist), p_m_g_notify_pending->type, &p_m_g_notify_pending->param); message_free(p_m_g_notify_pending); p_m_g_notify_pending = NULL; } break; case MESSAGE_DISCONNECT: /* call has been disconnected */ if (p_state!=PORT_STATE_IN_PROCEEDING && p_state!=PORT_STATE_IN_ALERTING && p_state!=PORT_STATE_OUT_SETUP && p_state!=PORT_STATE_OUT_OVERLAP && p_state!=PORT_STATE_OUT_PROCEEDING && p_state!=PORT_STATE_OUT_ALERTING && p_state!=PORT_STATE_CONNECT && p_state!=PORT_STATE_CONNECT_WAITING) break; message_disconnect(epoint_id, message_id, param); break; case MESSAGE_RELEASE: /* release isdn port */ if (p_state==PORT_STATE_RELEASE) break; message_release(epoint_id, message_id, param); break; default: PDEBUG(DEBUG_GSM, "Pgsm(%s) gsm port with (caller id %s) received unhandled nessage: %d\n", p_name, p_callerinfo.id, message_id); } return(1); } /* * handler */ int Pgsm::handler(void) { int ret; int work = 0; unsigned char buffer[2048+MISDN_HEADER_LEN]; struct mISDNhead *hh = (struct mISDNhead *)buffer; if ((ret = PmISDN::handler())) return(ret); /* handle destruction */ if (p_m_delete) { delete this; return(-1); } /* handle message from bchannel */ if (p_m_g_gsm_b_sock > -1) { ret = recv(p_m_g_gsm_b_sock, buffer, sizeof(buffer), 0); if (ret >= (int)MISDN_HEADER_LEN) { switch(hh->prim) { /* we don't care about confirms, we use rx data to sync tx */ case PH_DATA_CNF: break; /* we receive audio data, we respond to it AND we send tones */ case PH_DATA_IND: bchannel_receive(hh, buffer+MISDN_HEADER_LEN, ret-MISDN_HEADER_LEN); break; case PH_ACTIVATE_IND: p_m_g_gsm_b_active = 1; break; case PH_DEACTIVATE_IND: p_m_g_gsm_b_active = 0; break; } work = 1; } else { if (ret < 0 && errno != EWOULDBLOCK) PERROR("Read from GSM port, index %d failed with return code %d\n", ret); } } return(work); } /* * handles bsc select function within LCR's main loop */ int handle_gsm(void) { int ret1, ret2; ret1 = bsc_upqueue((struct gsm_network *)gsm->network); ret2 = bsc_select_main(1); /* polling */ if (ret1 || ret2) return 1; return 0; } static void gsm_sock_close(void) { if (gsm->gsm_sock > -1) close(gsm->gsm_sock); gsm->gsm_sock = -1; } static int gsm_sock_open(char *portname) { int ret; int cnt; unsigned long on = 1; struct sockaddr_mISDN addr; struct mISDN_devinfo devinfo; int pri, bri; /* check port counts */ ret = ioctl(mISDNsocket, IMGETCOUNT, &cnt); if (ret < 0) { fprintf(stderr, "Cannot get number of mISDN devices. (ioctl IMGETCOUNT failed ret=%d)\n", ret); return(ret); } if (cnt <= 0) { PERROR_RUNTIME("Found no card. Please be sure to load card drivers.\n"); return -EIO; } gsm->gsm_port = mISDN_getportbyname(mISDNsocket, cnt, portname); if (gsm->gsm_port < 0) { PERROR_RUNTIME("Port name '%s' not found, did you load loopback interface for GSM?.\n", portname); return gsm->gsm_port; } /* get protocol */ bri = pri = 0; devinfo.id = gsm->gsm_port; ret = ioctl(mISDNsocket, IMGETDEVINFO, &devinfo); if (ret < 0) { PERROR_RUNTIME("Cannot get device information for port %d. (ioctl IMGETDEVINFO failed ret=%d)\n", gsm->gsm_port, ret); return ret; } if (devinfo.Dprotocols & (1 << ISDN_P_TE_S0)) { bri = 1; } if (devinfo.Dprotocols & (1 << ISDN_P_TE_E1)) { pri = 1; } if (!pri && !pri) { PERROR_RUNTIME("GSM port %d does not support TE PRI or TE BRI.\n", gsm->gsm_port); } /* open socket */ if ((gsm->gsm_sock = socket(PF_ISDN, SOCK_DGRAM, ISDN_P_TE_S0)) < 0) { PERROR_RUNTIME("GSM port %d failed to open socket.\n", gsm->gsm_port); gsm_sock_close(); return gsm->gsm_sock; } /* set nonblocking io */ if ((ret = ioctl(gsm->gsm_sock, FIONBIO, &on)) < 0) { PERROR_RUNTIME("GSM port %d failed to set socket into nonblocking io.\n", gsm->gsm_port); gsm_sock_close(); return ret; } /* bind socket to dchannel */ memset(&addr, 0, sizeof(addr)); addr.family = AF_ISDN; addr.dev = gsm->gsm_port; addr.channel = 0; if ((ret = bind(gsm->gsm_sock, (struct sockaddr *)&addr, sizeof(addr))) < 0) { PERROR_RUNTIME("GSM port %d failed to bind socket. (name = %s errno=%d)\n", gsm->gsm_port, portname, errno); gsm_sock_close(); return (ret); } return 0; } int gsm_exit(int rc) { /* free gsm instance */ if (gsm) { if (gsm->gsm_sock > -1) gsm_sock_close(); /* shutdown network */ if (gsm->network) shutdown_net((struct gsm_network *)gsm->network); /* free network */ if (gsm->network) { free((struct gsm_network *)gsm->network); /* TBD */ } free(gsm); gsm = NULL; } return(rc); } int gsm_init(void) { char hlr[128], filename[128]; mode_t mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH; int pcapfd; /* create gsm instance */ gsm = (struct lcr_gsm *)MALLOC(sizeof(struct lcr_gsm)); gsm->gsm_sock = -1; /* parse options */ if (!gsm_conf(&gsm->conf)) { PERROR("%s", gsm_conf_error); return gsm_exit(-EINVAL); } /* set debug */ debug_parse_category_mask(gsm->conf.debug); /* init database */ if (gsm->conf.hlr[0] == '/') SCPY(hlr, gsm->conf.hlr); else SPRINT(hlr, "%s/%s", CONFIG_DATA, gsm->conf.hlr); // TODO multiple base stations if (gsm->conf.numbts < 1 || gsm->conf.numbts > 1) { PERROR("Expecting exactly one BTS. You defined %d.\n", gsm->conf.numbts); return gsm_exit(-1); } /* bootstrap network */ gsm->network = bootstrap_network(&message_bcs, gsm->conf.bts[0].type, gsm->conf.mcc, gsm->conf.mnc, gsm->conf.lac, gsm->conf.bts[0].frequency[0], gsm->conf.bts[0].card, !gsm->conf.keep_l2, gsm->conf.short_name, gsm->conf.long_name, hlr, gsm->conf.allow_all); if (!gsm->network) { PERROR("Failed to bootstrap GSM network.\n"); return gsm_exit(-1); } /* open gsm loop interface */ if (gsm_sock_open(gsm->conf.interface_bsc)) { return gsm_exit(-1); } /* open pcap file */ if (gsm->conf.pcapfile[0]) { if (gsm->conf.pcapfile[0] == '/') SCPY(filename, gsm->conf.pcapfile); else SPRINT(filename, "%s/%s", CONFIG_DATA, gsm->conf.pcapfile); pcapfd = open(filename, O_WRONLY|O_TRUNC|O_CREAT, mode); if (pcapfd < 0) { PERROR("Failed to open file for pcap\n"); return gsm_exit(-1); } e1_set_pcap_fd(pcapfd); } return 0; }