void Control::MOSMSController(const L3CMServiceRequest *req,
LogicalChannel *LCH)
{
assert(req);
assert(LCH);
LOG(INFO) << "MOSMS, req " << *req;
// If we got a TMSI, find the IMSI.
// Note that this is a copy, not a reference.
L3MobileIdentity mobileIdentity = req->mobileIdentity();
resolveIMSI(mobileIdentity,LCH);
// See GSM 04.11 Arrow Diagram A5 for the transaction
// Step 1 MS->Network CP-DATA containing RP-DATA
// Step 2 Network->MS CP-ACK
// Step 3 Network->MS CP-DATA containing RP-ACK
// Step 4 MS->Network CP-ACK
// LAPDm operation, from GSM 04.11, Annex F:
// """
// Case A: Mobile originating short message transfer, no parallel call:
// The mobile station side will initiate SAPI 3 establishment by a SABM command
// on the SDCCH after the cipher mode has been set. If no hand over occurs, the
// SAPI 3 link will stay up until the last CP-ACK is received by the MSC, and
// the clearing procedure is invoked.
// """
// FIXME: check provisioning
// Let the phone know we're going ahead with the transaction.
LOG(INFO) << "sending CMServiceAccept";
LCH->send(L3CMServiceAccept());
// Wait for SAP3 to connect.
// The first read on SAP3 is the ESTABLISH primitive.
delete getFrameSMS(LCH,ESTABLISH);
// Step 1
// Now get the first message.
// Should be CP-DATA, containing RP-DATA.
L3Frame *CM = getFrameSMS(LCH);
LOG(DEBUG) << "data from MS " << *CM;
if (CM->MTI()!=CPMessage::DATA) {
LOG(NOTICE) << "unexpected SMS CP message with TI=" << CM->MTI();
throw UnexpectedMessage();
}
unsigned TI = CM->TIValue();
// Step 2
// Respond with CP-ACK.
// This just means that we got the message.
LOG(INFO) << "sending CPAck";
LCH->send(CPAck(1,TI),3);
// Parse the message in CM and process RP part.
// This is where we actually parse the message and send it out.
// FIXME -- We need to set the message ref correctly,
// even if the parsing fails.
// The compiler gives a warning here. Let it. It will remind someone to fix it.
unsigned ref;
bool success = false;
try {
CPData data;
data.parse(*CM);
delete CM;
LOG(INFO) << "CPData " << data;
// Transfer out the RPDU -> TPDU -> delivery.
ref = data.RPDU().reference();
// This handler invokes higher-layer parsers, too.
success = handleRPDU(mobileIdentity,data.RPDU());
}
catch (SMSReadError) {
LOG(WARN) << "SMS parsing failed (above L3)";
// Cause 95, "semantically incorrect message".
LCH->send(CPData(1,TI,RPError(95,ref)),3);
throw UnexpectedMessage();
}
catch (L3ReadError) {
LOG(WARN) << "SMS parsing failed (in L3)";
throw UnsupportedMessage();
}
// Step 3
// Send CP-DATA containing RP-ACK and message reference.
if (success) {
LOG(INFO) << "sending RPAck in CPData";
LCH->send(CPData(1,TI,RPAck(ref)),3);
} else {
LOG(INFO) << "sending RPError in CPData";
// Cause 127 is "internetworking error, unspecified".
// See GSM 04.11 Table 8.4.
LCH->send(CPData(1,TI,RPError(127,ref)),3);
}
// Step 4
// Get CP-ACK from the MS.
CM = getFrameSMS(LCH);
if (CM->MTI()!=CPMessage::ACK) {
LOG(NOTICE) << "unexpected SMS CP message with TI=" << CM->MTI();
throw UnexpectedMessage();
}
LOG(DEBUG) << "ack from MS: " << *CM;
CPAck ack;
ack.parse(*CM);
LOG(INFO) << "CPAck " << ack;
// RRLP Here if enabled
if (gConfig.defines("GSM.RRLP") && gConfig.getNum("GSM.RRLP") == 1 &&
gConfig.defines("RRLP.LocationUpdate") && gConfig.getNum("RRLP.LocationUpdate") == 1 /* RRLP? */)
{
Timeval start;
RRLP::collectMSInfo(mobileIdentity, LCH, true /* DO RRLP */);
LOG(INFO) << "submitSMS with RRLP took " << start.elapsed() << " for IMSI " << mobileIdentity;
}
// Done.
LOG(INFO) << "closing";
LCH->send(L3ChannelRelease());
}
void Control::MOSMSController(const GSM::L3CMServiceRequest *req, GSM::LogicalChannel *LCH)
{
assert(req);
assert(req->serviceType().type() == GSM::L3CMServiceType::ShortMessage);
assert(LCH);
assert(LCH->type() != GSM::SACCHType);
LOG(INFO) << "MOSMS, req " << *req;
// If we got a TMSI, find the IMSI.
// Note that this is a copy, not a reference.
GSM::L3MobileIdentity mobileID = req->mobileID();
resolveIMSI(mobileID,LCH);
// Create a transaction record.
TransactionEntry *transaction = new TransactionEntry(gConfig.getStr("SIP.Proxy.SMS").c_str(),mobileID,LCH);
gTransactionTable.add(transaction);
LOG(DEBUG) << "MOSMS: transaction: " << *transaction;
// See GSM 04.11 Arrow Diagram A5 for the transaction
// Step 1 MS->Network CP-DATA containing RP-DATA
// Step 2 Network->MS CP-ACK
// Step 3 Network->MS CP-DATA containing RP-ACK
// Step 4 MS->Network CP-ACK
// LAPDm operation, from GSM 04.11, Annex F:
// """
// Case A: Mobile originating short message transfer, no parallel call:
// The mobile station side will initiate SAPI 3 establishment by a SABM command
// on the DCCH after the cipher mode has been set. If no hand over occurs, the
// SAPI 3 link will stay up until the last CP-ACK is received by the MSC, and
// the clearing procedure is invoked.
// """
// FIXME: check provisioning
if (gConfig.getNum("GSM.Authentication")||gConfig.getNum("GSM.Encryption")) {
AuthenticationParameters authParams(mobileID);
registerIMSI(authParams, LCH);
authenticate(authParams, LCH);
}
// Let the phone know we're going ahead with the transaction.
if (LCH->isDecrypting()) {
LOG(INFO) << "Decryption ACTIVE for:" << mobileID << " CMServiceAccept NOT sent, because CipherModeCommand implies it.";
}
else {
LOG(INFO) << "Decryption NOT active for: " << mobileID << " Sending CMServiceAccept";
LCH->send(GSM::L3CMServiceAccept());
}
// Wait for SAP3 to connect.
// The first read on SAP3 is the ESTABLISH primitive.
delete getFrameSMS(LCH,GSM::ESTABLISH);
// Step 1
// Now get the first message.
// Should be CP-DATA, containing RP-DATA.
GSM::L3Frame *CM = getFrameSMS(LCH);
LOG(DEBUG) << "data from MS " << *CM;
if (CM->MTI()!=CPMessage::DATA) {
LOG(NOTICE) << "unexpected SMS CP message with TI=" << CM->MTI();
delete CM;
throw UnexpectedMessage();
}
unsigned L3TI = CM->TI() | 0x08;
transaction->L3TI(L3TI);
// Step 2
// Respond with CP-ACK.
// This just means that we got the message.
LOG(INFO) << "sending CPAck";
LCH->send(CPAck(L3TI),3);
// Parse the message in CM and process RP part.
// This is where we actually parse the message and send it out.
// FIXME -- We need to set the message ref correctly,
// even if the parsing fails.
// The compiler gives a warning here. Let it. It will remind someone to fix it.
unsigned ref;
bool success = false;
try {
CPData data;
data.parse(*CM);
LOG(INFO) << "CPData " << data;
// Transfer out the RPDU -> TPDU -> delivery.
ref = data.RPDU().reference();
// This handler invokes higher-layer parsers, too.
success = handleRPDU(transaction,data.RPDU());
}
catch (SMSReadError) {
LOG(WARNING) << "SMS parsing failed (above L3)";
// Cause 95, "semantically incorrect message".
LCH->send(CPData(L3TI,RPError(95,ref)),3);
delete CM;
throw UnexpectedMessage();
}
catch (GSM::L3ReadError) {
LOG(WARNING) << "SMS parsing failed (in L3)";
delete CM;
throw UnsupportedMessage();
}
delete CM;
// Step 3
// Send CP-DATA containing RP-ACK and message reference.
if (success) {
LOG(INFO) << "sending RPAck in CPData";
LCH->send(CPData(L3TI,RPAck(ref)),3);
} else {
LOG(INFO) << "sending RPError in CPData";
// Cause 127 is "internetworking error, unspecified".
// See GSM 04.11 Table 8.4.
LCH->send(CPData(L3TI,RPError(127,ref)),3);
}
// Step 4
// Get CP-ACK from the MS.
CM = getFrameSMS(LCH);
if (CM->MTI()!=CPMessage::ACK) {
LOG(NOTICE) << "unexpected SMS CP message with TI=" << CM->MTI();
throw UnexpectedMessage();
}
LOG(DEBUG) << "ack from MS: " << *CM;
CPAck ack;
ack.parse(*CM);
delete CM;
LOG(INFO) << "CPAck " << ack;
/* MOSMS RLLP request */
if (gConfig.defines("Control.SMS.QueryRRLP")) {
// Query for RRLP
if (!sendRRLP(mobileID, LCH)) {
LOG(INFO) << "RRLP request failed";
}
}
// Done.
LCH->send(GSM::L3ChannelRelease());
gTransactionTable.remove(transaction);
LOG(INFO) << "closing the Um channel";
}
void Control::InCallMOSMSController(const CPData *cpData, TransactionEntry* transaction, GSM::SACCHLogicalChannel *LCH)
{
LOG(INFO) << *cpData;
// See GSM 04.11 Arrow Diagram A5 for the transaction
// Step 1 MS->Network CP-DATA containing RP-DATA
// Step 2 Network->MS CP-ACK
// Step 3 Network->MS CP-DATA containing RP-ACK
// Step 4 MS->Network CP-ACK
// LAPDm operation, from GSM 04.11, Annex F:
// """
// Case C: Mobile originating short message transfer, parallel call.
// The mobile station will send a SABM command on the SACCH when a CM_SERV_ACC
// message has been received from the network, allowing the short message
// transfer to start. If no hand over occurs the link will stay up until the
// MSC orders a explicit release, or the clearing procedure is invoked. If the
// parallel call is cleared before the short message transfer is finalized, the
// MSC will delay the clearing procedure toward the BSS, i.e. the channel
// release procedure is delayed.
// """
// Since there's a parallel call, we will assume correct provisioning.
// And we know that CM and SABM are established.
// Step 1 already happened in the SACCH service loop.
// Just get the L3 TI and set the high bit since it originated in the MS.
unsigned L3TI = cpData->TI() | 0x08;
transaction->L3TI(L3TI);
// Step 2
// Respond with CP-ACK.
// This just means that we got the message.
LOG(INFO) << "sending CPAck";
LCH->send(CPAck(L3TI),3);
// Parse the message in CM and process RP part.
// This is where we actually parse the message and send it out.
// FIXME -- We need to set the message ref correctly,
// even if the parsing fails.
// The compiler gives a warning here. Let it. It will remind someone to fix it.
unsigned ref;
bool success = false;
try {
CPData data;
data.parse(*cpData);
LOG(INFO) << "CPData " << data;
// Transfer out the RPDU -> TPDU -> delivery.
ref = data.RPDU().reference();
// This handler invokes higher-layer parsers, too.
success = handleRPDU(transaction,data.RPDU());
}
catch (SMSReadError) {
LOG(WARNING) << "SMS parsing failed (above L3)";
// Cause 95, "semantically incorrect message".
LCH->send(CPData(L3TI,RPError(95,ref)),3);
throw UnexpectedMessage(transaction->ID());
}
catch (GSM::L3ReadError) {
LOG(WARNING) << "SMS parsing failed (in L3)";
throw UnsupportedMessage(transaction->ID());
}
// Step 3
// Send CP-DATA containing RP-ACK and message reference.
if (success) {
LOG(INFO) << "sending RPAck in CPData";
LCH->send(CPData(L3TI,RPAck(ref)),3);
} else {
LOG(INFO) << "sending RPError in CPData";
// Cause 127 is "internetworking error, unspecified".
// See GSM 04.11 Table 8.4.
LCH->send(CPData(L3TI,RPError(127,ref)),3);
}
// Step 4
// Get CP-ACK from the MS.
GSM::L3Frame* CM = getFrameSMS(LCH);
if (CM->MTI()!=CPMessage::ACK) {
LOG(NOTICE) << "unexpected SMS CP message with MTI=" << CM->MTI() << " " << *CM;
throw UnexpectedMessage(transaction->ID());
}
LOG(DEBUG) << "ack from MS: " << *CM;
CPAck ack;
ack.parse(*CM);
LOG(INFO) << "CPAck " << ack;
/* I had a hell of a time testing this with my B100
I know it went off, that's all. If things fail, look
here -kurtis */
/* MOSMS RLLP request */
if (gConfig.defines("Control.SMS.QueryRRLP")) {
// Query for RRLP
if (!sendRRLP(transaction->subscriber(), LCH)) {
LOG(INFO) << "RRLP request failed";
}
}
gTransactionTable.remove(transaction);
}
void Control::InCallMOSMSController(const CPData *cpData, TransactionEntry* transaction, UMTS::DCCHLogicalChannel *LCH)
{
LOG(INFO) << *cpData;
// FIXME -- We know this will be broken in UMTS.
// Step 1 already happened in the SACCH service loop.
// Just get the L3 TI and set the high bit since it originated in the MS.
unsigned L3TI = cpData->TI() | 0x08;
transaction->L3TI(L3TI);
// Step 2
// Respond with CP-ACK.
// This just means that we got the message.
LOG(INFO) << "sending CPAck";
LCH->send(CPAck(L3TI),3);
// Parse the message in CM and process RP part.
// This is where we actually parse the message and send it out.
// FIXME -- We need to set the message ref correctly,
// even if the parsing fails.
// The compiler gives a warning here. Let it. It will remind someone to fix it.
unsigned ref;
bool success = false;
try {
CPData data;
data.parse(*cpData);
LOG(INFO) << "CPData " << data;
// Transfer out the RPDU -> TPDU -> delivery.
ref = data.RPDU().reference();
// This handler invokes higher-layer parsers, too.
success = handleRPDU(transaction,data.RPDU());
}
catch (SMSReadError) {
LOG(WARNING) << "SMS parsing failed (above L3)";
// Cause 95, "semantically incorrect message".
LCH->send(CPData(L3TI,RPError(95,ref)),3);
throw UnexpectedMessage(transaction->ID());
}
catch (GSM::L3ReadError) {
LOG(WARNING) << "SMS parsing failed (in L3)";
throw UnsupportedMessage(transaction->ID());
}
// Step 3
// Send CP-DATA containing RP-ACK and message reference.
if (success) {
LOG(INFO) << "sending RPAck in CPData";
LCH->send(CPData(L3TI,RPAck(ref)),3);
} else {
LOG(INFO) << "sending RPError in CPData";
// Cause 127 is "internetworking error, unspecified".
// See GSM 04.11 Table 8.4.
LCH->send(CPData(L3TI,RPError(127,ref)),3);
}
// Step 4
// Get CP-ACK from the MS.
GSM::L3Frame* CM = getFrameSMS(LCH);
if (CM->MTI()!=CPMessage::ACK) {
LOG(NOTICE) << "unexpected SMS CP message with MTI=" << CM->MTI() << " " << *CM;
throw UnexpectedMessage(transaction->ID());
}
LOG(DEBUG) << "ack from MS: " << *CM;
CPAck ack;
ack.parse(*CM);
LOG(INFO) << "CPAck " << ack;
gTransactionTable.remove(transaction);
}
