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lcr/gsm.cpp

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/*****************************************************************************\
** **
** 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, &param->setup.callerinfo, sizeof(p_callerinfo));
memcpy(&p_dialinginfo, &param->setup.dialinginfo, sizeof(p_dialinginfo));
memcpy(&p_capainfo, &param->setup.capainfo, sizeof(p_capainfo));
memcpy(&p_redirinfo, &param->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, &param->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;
}
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