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lcr/gsm_ms.cpp

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/*****************************************************************************\
** **
** LCR **
** **
**---------------------------------------------------------------------------**
** Copyright: Andreas Eversberg **
** **
** mISDN gsm (MS mode) **
** **
\*****************************************************************************/
#include "main.h"
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
extern "C" {
#include <getopt.h>
#include <osmocore/select.h>
#include <osmocore/talloc.h>
#include <osmocom/bb/common/osmocom_data.h>
#include <osmocom/bb/common/logging.h>
#include <osmocom/bb/common/l1l2_interface.h>
#include <osmocom/bb/common/l23_app.h>
}
const char *openbsc_copyright = "";
short vty_port = 4247;
struct llist_head ms_list;
struct log_target *stderr_target;
void *l23_ctx = NULL;
int (*l23_app_work) (struct osmocom_ms *ms) = NULL;
int (*l23_app_exit) (struct osmocom_ms *ms) = NULL;
static int dtmf_timeout(struct lcr_timer *timer, void *instance, int index);
/*
* constructor
*/
Pgsm_ms::Pgsm_ms(int type, struct mISDNport *mISDNport, char *portname, struct port_settings *settings, int channel, int exclusive, int mode) : Pgsm(type, mISDNport, portname, settings, channel, exclusive, mode)
{
struct osmocom_ms *ms = NULL;
char *ms_name = mISDNport->ifport->gsm_ms_name;
p_m_g_instance = NULL;
llist_for_each_entry(ms, &ms_list, entity) {
if (!strcmp(ms->name, ms_name)) {
p_m_g_instance = ms;
break;
}
}
if (!p_m_g_instance)
FATAL("MS name %s does not exists. Please fix!");
p_m_g_dtmf_state = DTMF_ST_IDLE;
p_m_g_dtmf_index = 0;
p_m_g_dtmf[0] = '\0';
memset(&p_m_g_dtmf_timer, 0, sizeof(p_m_g_dtmf_timer));
add_timer(&p_m_g_dtmf_timer, dtmf_timeout, this, 0);
PDEBUG(DEBUG_GSM, "Created new GSMMSPort(%s %s).\n", portname, ms_name);
}
/*
* destructor
*/
Pgsm_ms::~Pgsm_ms()
{
PDEBUG(DEBUG_GSM, "Destroyed GSM MS process(%s).\n", p_name);
del_timer(&p_m_g_dtmf_timer);
}
/*
* handles all indications
*/
/* SETUP INDICATION */
void Pgsm_ms::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;
/* 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->fields |= MNCC_F_CAUSE;
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(p_m_g_instance, mncc->msg_type, mncc);
new_state(PORT_STATE_RELEASE);
trigger_work(&p_m_g_delete);
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->fields |= MNCC_F_CAUSE;
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(p_m_g_instance, mncc->msg_type, mncc);
new_state(PORT_STATE_RELEASE);
trigger_work(&p_m_g_delete);
return;
}
gsm_trace_header(p_m_mISDNport, this, MNCC_SETUP_IND, DIRECTION_IN);
/* caller information */
p_callerinfo.ntype = INFO_NTYPE_NOTPRESENT;
if (mncc->fields & MNCC_F_CALLING) {
switch (mncc->calling.present) {
case 1:
p_callerinfo.present = INFO_PRESENT_RESTRICTED;
break;
case 2:
p_callerinfo.present = INFO_PRESENT_NOTAVAIL;
break;
default:
p_callerinfo.present = INFO_PRESENT_ALLOWED;
break;
}
switch (mncc->calling.screen) {
case 0:
p_callerinfo.screen = INFO_SCREEN_USER;
break;
case 1:
p_callerinfo.screen = INFO_SCREEN_USER_VERIFIED_PASSED;
break;
case 2:
p_callerinfo.screen = INFO_SCREEN_USER_VERIFIED_FAILED;
break;
default:
p_callerinfo.screen = INFO_SCREEN_NETWORK;
break;
}
switch (mncc->calling.type) {
case 0x0:
p_callerinfo.ntype = INFO_NTYPE_UNKNOWN;
break;
case 0x1:
p_callerinfo.ntype = INFO_NTYPE_INTERNATIONAL;
break;
case 0x2:
p_callerinfo.ntype = INFO_NTYPE_NATIONAL;
break;
case 0x4:
p_callerinfo.ntype = INFO_NTYPE_SUBSCRIBER;
break;
default:
p_callerinfo.ntype = INFO_NTYPE_UNKNOWN;
break;
}
SCPY(p_callerinfo.id, mncc->calling.number);
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);
}
p_callerinfo.isdn_port = p_m_portnum;
SCPY(p_callerinfo.interface, p_m_mISDNport->ifport->interface->name);
/* dialing information */
if (mncc->fields & MNCC_F_CALLED) {
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;
}
add_trace("dialing", "type", "%d", mncc->called.type);
add_trace("dialing", "plan", "%d", mncc->called.plan);
add_trace("dialing", "number", "%s", mncc->called.number);
}
p_dialinginfo.sending_complete = 1;
/* redir info */
p_redirinfo.ntype = INFO_NTYPE_NOTPRESENT;
if (mncc->fields & MNCC_F_REDIRECTING) {
switch (mncc->redirecting.present) {
case 1:
p_redirinfo.present = INFO_PRESENT_RESTRICTED;
break;
case 2:
p_redirinfo.present = INFO_PRESENT_NOTAVAIL;
break;
default:
p_redirinfo.present = INFO_PRESENT_ALLOWED;
break;
}
switch (mncc->redirecting.screen) {
case 0:
p_redirinfo.screen = INFO_SCREEN_USER;
break;
case 1:
p_redirinfo.screen = INFO_SCREEN_USER_VERIFIED_PASSED;
break;
case 2:
p_redirinfo.screen = INFO_SCREEN_USER_VERIFIED_FAILED;
break;
default:
p_redirinfo.screen = INFO_SCREEN_NETWORK;
break;
}
switch (mncc->redirecting.type) {
case 0x0:
p_redirinfo.ntype = INFO_NTYPE_UNKNOWN;
break;
case 0x1:
p_redirinfo.ntype = INFO_NTYPE_INTERNATIONAL;
break;
case 0x2:
p_redirinfo.ntype = INFO_NTYPE_NATIONAL;
break;
case 0x4:
p_redirinfo.ntype = INFO_NTYPE_SUBSCRIBER;
break;
default:
p_redirinfo.ntype = INFO_NTYPE_UNKNOWN;
break;
}
SCPY(p_redirinfo.id, mncc->redirecting.number);
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);
p_redirinfo.isdn_port = p_m_portnum;
}
/* bearer capability */
if (mncc->fields & MNCC_F_BEARER_CAP) {
switch (mncc->bearer_cap.transfer) {
case 1:
p_capainfo.bearer_capa = INFO_BC_DATAUNRESTRICTED;
break;
case 2:
case 3:
p_capainfo.bearer_capa = INFO_BC_AUDIO;
p_capainfo.bearer_info1 = (options.law=='a')?3:2;
break;
default:
p_capainfo.bearer_capa = INFO_BC_SPEECH;
p_capainfo.bearer_info1 = (options.law=='a')?3:2;
break;
}
switch (mncc->bearer_cap.mode) {
case 1:
p_capainfo.bearer_mode = INFO_BMODE_PACKET;
break;
default:
p_capainfo.bearer_mode = INFO_BMODE_CIRCUIT;
break;
}
add_trace("bearer", "transfer", "%d", mncc->bearer_cap.transfer);
add_trace("bearer", "mode", "%d", mncc->bearer_cap.mode);
} else {
p_capainfo.bearer_capa = INFO_BC_SPEECH;
p_capainfo.bearer_info1 = (options.law=='a')?3:2;
p_capainfo.bearer_mode = INFO_BMODE_CIRCUIT;
}
/* if packet mode works some day, see dss1.cpp for conditions */
p_capainfo.source_mode = B_MODE_TRANSPARENT;
end_trace();
/* 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->fields |= MNCC_F_CAUSE;
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(p_m_g_instance, mncc->msg_type, mncc);
new_state(PORT_STATE_RELEASE);
trigger_work(&p_m_g_delete);
return;
}
bchannel_event(p_m_mISDNport, p_m_b_index, B_EVENT_USE);
if (bchannel_open(p_m_b_index))
goto no_channel;
/* 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(p_m_g_instance, mode->msg_type, mode);
/* send call proceeding */
gsm_trace_header(p_m_mISDNport, this, MNCC_CALL_CONF_REQ, DIRECTION_OUT);
proceeding = create_mncc(MNCC_CALL_CONF_REQ, p_m_g_callref);
// FIXME: bearer
/* DTMF supported */
proceeding->fields |= MNCC_F_CCCAP;
proceeding->cccap.dtmf = 1;
end_trace();
send_and_free_mncc(p_m_g_instance, 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(p_m_g_instance, 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);
}
/*
* MS sends message to port
*/
static int message_ms(struct osmocom_ms *ms, int msg_type, void *arg)
{
struct gsm_mncc *mncc = (struct gsm_mncc *)arg;
unsigned int callref = mncc->callref;
class Port *port;
class Pgsm_ms *pgsm_ms = NULL;
char name[64];
struct mISDNport *mISDNport;
/* Special messages */
if (msg_type) {
}
/* find callref */
callref = mncc->callref;
port = port_first;
while(port) {
if ((port->p_type & PORT_CLASS_GSM_MASK) == PORT_CLASS_GSM_MS) {
pgsm_ms = (class Pgsm_ms *)port;
if (pgsm_ms->p_m_g_callref == callref) {
break;
}
}
port = port->next;
}
if (msg_type == GSM_TCHF_FRAME) {
if (port)
pgsm_ms->frame_receive(arg);
return 0;
}
if (!port) {
if (msg_type != MNCC_SETUP_IND)
return(0);
/* find gsm ms port */
mISDNport = mISDNport_first;
while(mISDNport) {
if (mISDNport->gsm_ms && !strcmp(mISDNport->ifport->gsm_ms_name, ms->name))
break;
mISDNport = mISDNport->next;
}
if (!mISDNport) {
struct gsm_mncc *rej;
rej = create_mncc(MNCC_REJ_REQ, callref);
rej->fields |= MNCC_F_CAUSE;
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(ms, 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_ms = new Pgsm_ms(PORT_TYPE_GSM_MS_IN, mISDNport, name, NULL, 0, 0, B_MODE_TRANSPARENT)))
FATAL("Cannot create Port instance.\n");
}
switch(msg_type) {
case MNCC_SETUP_IND:
pgsm_ms->setup_ind(msg_type, callref, mncc);
break;
case MNCC_CALL_PROC_IND:
pgsm_ms->call_proc_ind(msg_type, callref, mncc);
break;
case MNCC_ALERT_IND:
pgsm_ms->alert_ind(msg_type, callref, mncc);
break;
case MNCC_SETUP_CNF:
pgsm_ms->setup_cnf(msg_type, callref, mncc);
break;
case MNCC_SETUP_COMPL_IND:
pgsm_ms->setup_compl_ind(msg_type, callref, mncc);
break;
case MNCC_DISC_IND:
pgsm_ms->disc_ind(msg_type, callref, mncc);
break;
case MNCC_REL_IND:
case MNCC_REL_CNF:
case MNCC_REJ_IND:
pgsm_ms->rel_ind(msg_type, callref, mncc);
break;
case MNCC_NOTIFY_IND:
pgsm_ms->notify_ind(msg_type, callref, mncc);
break;
case MNCC_START_DTMF_RSP:
case MNCC_START_DTMF_REJ:
case MNCC_STOP_DTMF_RSP:
pgsm_ms->dtmf_statemachine(mncc);
break;
default:
;
}
return(0);
}
/* MESSAGE_SETUP */
void Pgsm_ms::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);
trigger_work(&p_m_g_delete);
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);
trigger_work(&p_m_g_delete);
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);
trigger_work(&p_m_g_delete);
return;
}
bchannel_event(p_m_mISDNport, p_m_b_index, B_EVENT_USE);
if (bchannel_open(p_m_b_index))
goto no_channel;
/* 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);
if (!strncasecmp(p_dialinginfo.id, "emerg", 5)) {
mncc->emergency = 1;
} else {
/* caller info (only clir) */
switch (p_callerinfo.present) {
case INFO_PRESENT_ALLOWED:
mncc->clir.inv = 1;
break;
default:
mncc->clir.sup = 1;
}
/* dialing information (mandatory) */
mncc->fields |= MNCC_F_CALLED;
mncc->called.type = 0; /* unknown */
mncc->called.plan = 1; /* isdn */
SCPY(mncc->called.number, p_dialinginfo.id);
add_trace("dialing", "number", "%s", mncc->called.number);
/* bearer capability (mandatory) */
mncc->fields |= MNCC_F_BEARER_CAP;
mncc->bearer_cap.coding = 0;
mncc->bearer_cap.radio = 1;
mncc->bearer_cap.speech_ctm = 0;
mncc->bearer_cap.speech_ver[0] = 0;
mncc->bearer_cap.speech_ver[1] = -1; /* end of list */
switch (p_capainfo.bearer_capa) {
case INFO_BC_DATAUNRESTRICTED:
case INFO_BC_DATARESTRICTED:
mncc->bearer_cap.transfer = 1;
break;
case INFO_BC_SPEECH:
mncc->bearer_cap.transfer = 0;
break;
default:
mncc->bearer_cap.transfer = 2;
break;
}
switch (p_capainfo.bearer_mode) {
case INFO_BMODE_PACKET:
mncc->bearer_cap.mode = 1;
break;
default:
mncc->bearer_cap.mode = 0;
break;
}
/* DTMF supported */
mncc->fields |= MNCC_F_CCCAP;
mncc->cccap.dtmf = 1;
/* request keypad from remote */
message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_ENABLEKEYPAD);
message_put(message);
}
end_trace();
send_and_free_mncc(p_m_g_instance, 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);
}
void Pgsm_ms::dtmf_statemachine(struct gsm_mncc *mncc)
{
struct gsm_mncc *dtmf;
switch (p_m_g_dtmf_state) {
case DTMF_ST_SPACE:
case DTMF_ST_IDLE:
/* end of string */
if (!p_m_g_dtmf[p_m_g_dtmf_index]) {
PDEBUG(DEBUG_GSM, "done with DTMF\n");
p_m_g_dtmf_state = DTMF_ST_IDLE;
return;
}
gsm_trace_header(p_m_mISDNport, this, MNCC_START_DTMF_REQ, DIRECTION_OUT);
dtmf = create_mncc(MNCC_START_DTMF_REQ, p_m_g_callref);
dtmf->keypad = p_m_g_dtmf[p_m_g_dtmf_index++];
p_m_g_dtmf_state = DTMF_ST_START;
PDEBUG(DEBUG_GSM, "start DTMF (keypad %c)\n",
dtmf->keypad);
end_trace();
send_and_free_mncc(p_m_g_instance, dtmf->msg_type, dtmf);
return;
case DTMF_ST_START:
if (mncc->msg_type != MNCC_START_DTMF_RSP) {
PDEBUG(DEBUG_GSM, "DTMF was rejected\n");
return;
}
schedule_timer(&p_m_g_dtmf_timer, 0, 70 * 1000);
p_m_g_dtmf_state = DTMF_ST_MARK;
PDEBUG(DEBUG_GSM, "DTMF is on\n");
break;
case DTMF_ST_MARK:
gsm_trace_header(p_m_mISDNport, this, MNCC_STOP_DTMF_REQ, DIRECTION_OUT);
dtmf = create_mncc(MNCC_STOP_DTMF_REQ, p_m_g_callref);
p_m_g_dtmf_state = DTMF_ST_STOP;
end_trace();
send_and_free_mncc(p_m_g_instance, dtmf->msg_type, dtmf);
return;
case DTMF_ST_STOP:
schedule_timer(&p_m_g_dtmf_timer, 0, 120 * 1000);
p_m_g_dtmf_state = DTMF_ST_SPACE;
PDEBUG(DEBUG_GSM, "DTMF is off\n");
break;
}
}
static int dtmf_timeout(struct lcr_timer *timer, void *instance, int index)
{
class Pgsm_ms *pgsm_ms = (class Pgsm_ms *)instance;
PDEBUG(DEBUG_GSM, "DTMF timer has fired\n");
pgsm_ms->dtmf_statemachine(NULL);
return 0;
}
/* MESSAGE_DTMF */
void Pgsm_ms::message_dtmf(unsigned int epoint_id, int message_id, union parameter *param)
{
char digit = param->dtmf;
if (digit >= 'a' && digit <= 'c')
digit = digit - 'a' + 'A';
if (!strchr("01234567890*#ABC", digit))
return;
/* schedule */
if (p_m_g_dtmf_state == DTMF_ST_IDLE) {
p_m_g_dtmf_index = 0;
p_m_g_dtmf[0] = '\0';
}
SCCAT(p_m_g_dtmf, digit);
if (p_m_g_dtmf_state == DTMF_ST_IDLE)
dtmf_statemachine(NULL);
}
/* MESSAGE_INFORMATION */
void Pgsm_ms::message_information(unsigned int epoint_id, int message_id, union parameter *param)
{
char digit;
int i;
for (i = 0; i < (int)strlen(param->information.id); i++) {
digit = param->information.id[i];
if (digit >= 'a' && digit <= 'c')
digit = digit - 'a' + 'A';
if (!strchr("01234567890*#ABC", digit))
continue;
/* schedule */
if (p_m_g_dtmf_state == DTMF_ST_IDLE) {
p_m_g_dtmf_index = 0;
p_m_g_dtmf[0] = '\0';
}
SCCAT(p_m_g_dtmf, digit);
if (p_m_g_dtmf_state == DTMF_ST_IDLE)
dtmf_statemachine(NULL);
}
}
/*
* endpoint sends messages to the port
*/
int Pgsm_ms::message_epoint(unsigned int epoint_id, int message_id, union parameter *param)
{
struct lcr_msg *message;
if (message_id == MESSAGE_CONNECT) {
/* request keypad from remote */
message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_ENABLEKEYPAD);
message_put(message);
}
if (Pgsm::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_DTMF:
message_dtmf(epoint_id, message_id, param);
break;
case MESSAGE_INFORMATION:
message_information(epoint_id, message_id, param);
break;
default:
PDEBUG(DEBUG_GSM, "Pgsm_ms(%s) gsm port with (caller id %s) received unhandled nessage: %d\n", p_name, p_callerinfo.id, message_id);
}
return(1);
}
int gsm_ms_exit(int rc)
{
return(rc);
}
int gsm_ms_init(void)
{
INIT_LLIST_HEAD(&ms_list);
log_init(&log_info);
stderr_target = log_target_create_stderr();
log_add_target(stderr_target);
log_set_all_filter(stderr_target, 1);
l23_ctx = talloc_named_const(NULL, 1, "layer2 context");
return 0;
}
/* add a new GSM mobile instance */
int gsm_ms_new(const char *name, const char *socket_path)
{
struct osmocom_ms *ms = NULL;
int rc;
PDEBUG(DEBUG_GSM, "GSM: creating new instance '%s' on '%s'\n", name, socket_path);
ms = talloc_zero(l23_ctx, struct osmocom_ms);
if (!ms) {
FATAL("Failed to allocate MS\n");
}
/* must add here, because other init processes may search in the list */
llist_add_tail(&ms->entity, &ms_list);
SPRINT(ms->name, name);
rc = layer2_open(ms, socket_path);
if (rc < 0) {
FATAL("Failed during layer2_open()\n");
}
lapdm_init(&ms->l2_entity.lapdm_dcch, ms);
lapdm_init(&ms->l2_entity.lapdm_acch, ms);
rc = l23_app_init(ms);
if (rc < 0) {
FATAL("Failed to init layer23\n");
}
ms->mncc_entity.mncc_recv = message_ms;
return 0;
}
int gsm_ms_delete(const char *name)
{
struct osmocom_ms *ms = NULL;
int found = 0;
PDEBUG(DEBUG_GSM, "GSM: destroying instance '%s'\n", name);
llist_for_each_entry(ms, &ms_list, entity) {
if (!strcmp(ms->name, name)) {
found = 1;
break;
}
}
if (!found) {
FATAL("Failed delete layer23, instance '%s' not found\n", name);
}
l23_app_exit(ms);
lapdm_exit(&ms->l2_entity.lapdm_dcch);
lapdm_exit(&ms->l2_entity.lapdm_acch);
llist_del(&ms->entity);
return 0;
}
/*
* handles bsc select function within LCR's main loop
*/
int handle_gsm_ms(void)
{
struct osmocom_ms *ms = NULL;
int work = 0;
llist_for_each_entry(ms, &ms_list, entity) {
if (l23_app_work(ms))
work = 1;
// debug_reset_context();
if (bsc_select_main(1)) /* polling */
work = 1;
}
return work;
}
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