ipa: First version that emulates both MSC and BSC up to ASSIGNMENT REQ

This commit is contained in:
Harald Welte 2017-11-23 18:22:10 +01:00
parent 365f4edbd8
commit b3414b2172
9 changed files with 581 additions and 85 deletions

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@ -0,0 +1,105 @@
module BSC_MS_ConnectionHandler {
import from General_Types all;
import from Osmocom_Types all;
import from SCCPasp_Types all;
import from BSSAP_Types all;
import from BSSMAP_Emulation all;
import from BSSMAP_Templates all;
import from MobileL3_Types all;
import from MobileL3_CommonIE_Types all;
import from L3_Templates all;
/* this component represents a single subscriber connection at the MSC.
* There is a 1:1 mapping between SCCP connections and BSSAP_ConnHdlr components.
* We inherit all component variables, ports, functions, ... from BSSAP_ConnHdlr */
type component BSC_MS_ConnHdlr extends BSSAP_ConnHdlr {
/* SCCP Connecction Identifier for the underlying SCCP connection */
var integer g_sccp_conn_id;
}
/* Callback function from general BSSMAP_Emulation whenever a new incoming
* SCCP connection arrivces. Must create + start a new component */
private function CreateCallback(ASP_SCCP_N_CONNECT_ind conn_ind)
runs on BSSMAP_Emulation_CT return BSSAP_ConnHdlr {
log("Incoming SCCP Connection on BSC ?!?");
self.stop;
}
/* Callback function from general BSSMAP_Emulation whenever a connectionless
* BSSMAP message arrives. Can retunr a PDU_BSSAP that should be sent in return */
private function UnitdataCallback(PDU_BSSAP bssap)
runs on BSSMAP_Emulation_CT return template PDU_BSSAP {
var template PDU_BSSAP resp := omit;
if (match(bssap, tr_BSSMAP_Reset)) {
resp := ts_BSSMAP_ResetAck;
}
return resp;
}
const BssmapOps BSC_MS_BssmapOps := {
create_cb := refers(CreateCallback),
unitdata_cb := refers(UnitdataCallback)
}
function f_gen_cl3(hexstring imsi) return PDU_BSSAP {
var MobileIdentityLV mi := valueof(ts_MI_IMSI_LV(imsi));
var PDU_ML3_MS_NW l3 := valueof(ts_CM_SERV_REQ('0001'B, mi));
var BSSMAP_IE_CellIdentifier cell_id := valueof(ts_CellID_LAC_CI(23, 42));
var PDU_BSSAP bssap := valueof(ts_BSSMAP_ComplL3(cell_id, enc_PDU_ML3_MS_NW(l3)));
return bssap;
}
/* main function processing various incoming events */
function main(SCCP_PAR_Address sccp_addr_own, SCCP_PAR_Address sccp_addr_remote)
runs on BSC_MS_ConnHdlr {
var PDU_BSSAP bssap;
log("Starting main of BSC_MS_ConnHdlr");
/* generate and send the Complete Layer3 Info */
bssap := f_gen_cl3('901770123456789'H);
var BSSAP_Conn_Req creq := {
addr_peer := sccp_addr_remote,
addr_own := sccp_addr_own,
bssap := bssap
}
BSSAP.send(creq);
while (true) {
alt {
/* new SCCP-level connection indication from BSC */
[] BSSAP.receive(tr_BSSMAP_AssignmentCmd) -> value bssap {
/* TODO: Read CIC */
/* respond with ASSIGNMENT COMPL */
BSSAP.send(ts_BSSMAP_AssignmentComplete(bssap.pdu.bssmap.assignmentRequest.circuitIdentityCode));
}
/* TODO: CLEAR REQUEST from BSS */
/* CLEAR COMMAND from MSC; respond with CLEAR COMPLETE) */
[] BSSAP.receive(tr_BSSMAP_ClearCommand) -> value bssap {
BSSAP.send(ts_BSSMAP_ClearComplete);
/* FIXME: local release? */
}
[] BSSAP.receive(tr_BSSAP_DTAP) -> value bssap {
var PDU_ML3_MS_NW l3 := dec_PDU_ML3_MS_NW(bssap.pdu.dtap);
log("Unhandled DTAP ", l3);
}
[] BSSAP.receive(BSSAP_Conn_Prim:MSC_CONN_PRIM_DISC_IND) {
self.stop;
}
[] BSSAP.receive(PDU_BSSAP:?) -> value bssap {
log("Received unhandled SCCP-CO: ", bssap);
}
}
}
}
}

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@ -0,0 +1,77 @@
module BSC_MS_Simulation {
import from IPL4asp_Types all;
import from IPA_Emulation all;
import from SCCP_Types all;
import from SCCPasp_Types all;
import from SCCP_Emulation all;
import from BSSMAP_Emulation all;
import from BSC_MS_ConnectionHandler all;
type component BSC_CT {
/* component references */
var IPA_Emulation_CT vc_IPA;
var SCCP_CT vc_SCCP;
var BSSMAP_Emulation_CT vc_BSSMAP;
/* test port to SCCP emulation */
port SCCPasp_PT SCCP;
var SCCP_PAR_Address g_sccp_addr_own;
var SCCP_PAR_Address g_sccp_addr_remote;
}
function main(charstring remote_ip, PortNumber remote_port,
charstring local_ip, PortNumber local_port,
MSC_SCCP_MTP3_parameters sccp_pars,
SCCP_PAR_Address sccp_addr_own,
SCCP_PAR_Address sccp_addr_remote) runs on BSC_CT
{
g_sccp_addr_own := sccp_addr_own;
g_sccp_addr_remote := sccp_addr_remote;
/* create components */
vc_IPA := IPA_Emulation_CT.create;
vc_SCCP := SCCP_CT.create;
vc_BSSMAP := BSSMAP_Emulation_CT.create;
map(vc_IPA:IPA_PORT, system:IPA_CODEC_PT);
/* connect MTP3 service provider (IPA) to lower side of SCCP */
connect(vc_IPA:MTP3_SP_PORT, vc_SCCP:MTP3_SCCP_PORT);
/* connect BSSNAP dispatcher to upper side of SCCP */
connect(vc_BSSMAP:SCCP, vc_SCCP:SCCP_SP_PORT);
vc_IPA.start(IPA_Emulation.main_client(remote_ip, remote_port, local_ip, local_port));
vc_SCCP.start(SCCPStart(sccp_pars));
vc_BSSMAP.start(BSSMAP_Emulation.main(BSC_MS_BssmapOps));
while (true) {
timer T := 5.0;
T.start;
T.timeout;
f_start_BSC_MS();
//vc_IPA.MTP3_SP_PORT.send(t_ASP_MTP3_TRANSFERreq_sccp('83'O, 1, 2, 0, '012345'O));
}
vc_IPA.done;
vc_BSSMAP.done;
vc_SCCP.done
}
function f_start_BSC_MS() runs on BSC_CT {
var BSC_MS_ConnHdlr vc_conn;
/* start new component */
vc_conn := BSC_MS_ConnHdlr.create;
/* connect client BSSAP port to BSSAP dispatcher */
connect(vc_conn:BSSAP, vc_BSSMAP:CLIENT);
/* start component */
vc_conn.start(BSC_MS_ConnectionHandler.main(g_sccp_addr_own, g_sccp_addr_remote));
}
}

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@ -1,48 +1,58 @@
module IPA_Test { module IPA_Test {
import from Osmocom_Types all;
import from IPL4asp_Types all; import from IPL4asp_Types all;
import from IPA_Emulation all; import from IPA_Emulation all;
import from MTP3asp_Types all;
import from SCCP_Types all; import from SCCP_Types all;
import from SCCPasp_Types all; import from SCCPasp_Types all;
import from SCCP_Emulation all; import from SCCP_Emulation all;
import from MobileL3_Types all; import from MSC_Simulation all;
import from MobileL3_CommonIE_Types all; import from BSC_MS_Simulation all;
import from L3_Templates all;
import from BSSAP_Types all; const integer NUM_MSC := 1;
import from BSSMAP_Templates all; const integer NUM_BSC := 1;
type record BscState {
BSC_CT BSC,
MSC_SCCP_MTP3_parameters sccp_pars,
SCCP_PAR_Address sccp_addr_own,
SCCP_PAR_Address sccp_addr_peer
}
type record MscState {
MSC_CT MSC,
MSC_SCCP_MTP3_parameters sccp_pars,
SCCP_PAR_Address sccp_addr_own
}
type component test_CT { type component test_CT {
/* component references */ var MscState msc[NUM_MSC];
var IPA_Emulation_CT vc_IPA; var BscState bsc[NUM_BSC];
var SCCP_CT vc_SCCP;
/* test port to SCCP emulation */
port SCCPasp_PT SCCP;
var boolean g_initialized := false; var boolean g_initialized := false;
var octetstring g_sio; var octetstring g_sio := '83'O;
var MSC_SCCP_MTP3_parameters g_sccp_pars;
var SCCP_PAR_Address g_sccp_addr_own, g_sccp_addr_peer;
var ConnectionId g_ipa_conn_id := -1;
} }
modulepar { modulepar {
PortNumber mp_local_port := 0; PortNumber mp_bsc_port := 49999;
charstring mp_local_ip := "127.0.0.1"; charstring mp_bsc_ip := "127.0.0.1";
PortNumber mp_remote_port := 3002;
charstring mp_remote_ip := "127.0.0.1"; PortNumber mp_msc_port := 5000;
charstring mp_msc_ip := "127.0.0.1";
charstring mp_sccp_service_type := "mtp3_itu"; charstring mp_sccp_service_type := "mtp3_itu";
integer mp_own_pc := 196; integer mp_bsc_pc := 196;
integer mp_own_ssn := 254; integer mp_bsc_ssn := 254;
integer mp_peer_pc := 185; /* 0.23.1 */ integer mp_msc_pc := 185; /* 0.23.1 */
integer mp_peer_ssn := 254; integer mp_msc_ssn := 254;
} }
/* construct a SCCP_PAR_Address with just PC + SSN and no GT */ /* construct a SCCP_PAR_Address with just PC + SSN and no GT */
@ -59,76 +69,62 @@ template (value) SCCP_PAR_Address ts_SccpAddr_PC_SSN(integer pc, integer ssn) :=
globalTitle := omit globalTitle := omit
} }
template MTP3_Field_sio ts_sio(octetstring sio_in) := {
function f_gen_cl3() return PDU_BSSAP { ni := substr(oct2bit(sio_in),0,2),
var MobileIdentityLV mi := valueof(ts_MI_IMSI_LV('901770123456789'H)); prio := substr(oct2bit(sio_in),2,2),
var PDU_ML3_MS_NW l3 := valueof(ts_CM_SERV_REQ('0001'B, mi)); si := substr(oct2bit(sio_in),4,4)
var BSSMAP_IE_CellIdentifier cell_id := valueof(ts_CellID_LAC_CI(23, 42));
var PDU_BSSAP bssap := valueof(ts_BSSMAP_ComplL3(cell_id, enc_PDU_ML3_MS_NW(l3)));
return bssap;
} }
function f_send_bssap_cc(PDU_BSSAP bssap) runs on test_CT { template MSC_SCCP_MTP3_parameters ts_SCCP_Pars(octetstring sio, integer opc, integer dpc,
var ASP_SCCP_N_CONNECT_req prim; integer local_ssn) := {
prim := valueof(t_ASP_N_CONNECT_req(g_sccp_addr_peer, g_sccp_addr_own, omit, omit, sio := ts_sio(sio),
enc_PDU_BSSAP(bssap), 23, omit)); opc := opc,
SCCP.send(prim); dpc := dpc,
sls := 0,
sccp_serviceType := mp_sccp_service_type,
ssn := local_ssn
};
function f_init_BscState(inout BscState bsc_st, integer opc, integer dpc, integer local_ssn, integer remote_ssn)
runs on test_CT {
bsc_st.sccp_pars := valueof(ts_SCCP_Pars(g_sio, opc, dpc, local_ssn));
bsc_st.sccp_addr_own := valueof(ts_SccpAddr_PC_SSN(opc, local_ssn));
bsc_st.sccp_addr_peer := valueof(ts_SccpAddr_PC_SSN(dpc, remote_ssn));
} }
function init_pars() runs on test_CT { function f_init_MscState(inout MscState msc_st, integer opc, integer dpc, integer local_ssn, integer remote_ssn)
g_sio := '83'O; runs on test_CT {
g_sccp_pars := { msc_st.sccp_pars := valueof(ts_SCCP_Pars(g_sio, opc, dpc, local_ssn));
sio := { msc_st.sccp_addr_own := valueof(ts_SccpAddr_PC_SSN(opc, local_ssn));
ni := substr(oct2bit(g_sio),0,2),
prio := substr(oct2bit(g_sio),2,2),
si := substr(oct2bit(g_sio),4,4)
},
opc := mp_own_pc,
dpc := mp_peer_pc,
sls := 0,
sccp_serviceType := mp_sccp_service_type,
ssn := mp_own_ssn
};
g_sccp_addr_own := valueof(ts_SccpAddr_PC_SSN(mp_own_pc, mp_own_ssn));
g_sccp_addr_peer := valueof(ts_SccpAddr_PC_SSN(mp_peer_pc, mp_peer_ssn));
} }
private function f_init() runs on test_CT { function f_init() runs on test_CT {
var Result res; var integer i;
if (g_initialized == true) { for (i := 0; i < NUM_MSC; i := i+1) {
return; f_init_MscState(msc[i], mp_msc_pc +i, mp_bsc_pc, mp_msc_ssn, mp_bsc_ssn);
msc[i].MSC := MSC_CT.create;
msc[i].MSC.start(MSC_Simulation.main(mp_msc_ip, mp_msc_port + i, msc[i].sccp_pars, msc[i].sccp_addr_own));
} }
g_initialized := true;
init_pars(); for (i := 0; i < NUM_BSC; i := i+1) {
f_init_BscState(bsc[i], mp_bsc_pc +i, mp_msc_pc, mp_bsc_ssn, mp_msc_ssn);
bsc[i].BSC := BSC_CT.create;
bsc[i].BSC.start(BSC_MS_Simulation.main(mp_msc_ip, mp_msc_port, mp_bsc_ip, mp_bsc_port+i,
bsc[i].sccp_pars, bsc[i].sccp_addr_own,
bsc[i].sccp_addr_peer));
}
/* create components */
vc_IPA := IPA_Emulation_CT.create;
vc_SCCP := SCCP_CT.create;
map(vc_IPA:IPA_PORT, system:IPA_CODEC_PT);
/* connect MTP3 service provider (IPA) to lower side of SCCP */
connect(vc_IPA:MTP3_SP_PORT, vc_SCCP:MTP3_SCCP_PORT);
/* connect us to upper side of SCCP */
connect(self:SCCP, vc_SCCP:SCCP_SP_PORT);
vc_IPA.start(IPA_Emulation.ScanEvents());
vc_SCCP.start(SCCPStart(g_sccp_pars));
//IPA_Emulation.f_connect(mp_remote_ip, mp_remote_port, mp_local_ip, mp_local_port);
} }
testcase TC_recv_dump() runs on test_CT { testcase TC_recv_dump() runs on test_CT {
f_init(); f_init();
var PDU_BSSAP bssap := f_gen_cl3(); //var PDU_BSSAP bssap := f_gen_cl3();
f_send_bssap_cc(bssap); //f_send_bssap_cc(bssap);
while (true) { while (true) {
SCCP.receive; //SCCP.receive;
} }
} }

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@ -52,7 +52,7 @@ const BssmapOps MSC_BssmapOps := {
/* main function processing various incoming events */ /* main function processing various incoming events */
function main(integer connection_id, integer timeslot) runs on MSC_ConnHdlr { function main(integer connection_id, integer timeslot) runs on MSC_ConnHdlr {
g_sccp_conn_id := connection_id; g_sccp_conn_id := connection_id;
g_e1_timeslot := timeslot g_e1_timeslot := 1; /* FIXME */
while (true) { while (true) {
var PDU_BSSAP bssap; var PDU_BSSAP bssap;

59
ipa/MSC_Simulation.ttcn Executable file
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@ -0,0 +1,59 @@
module MSC_Simulation {
import from IPL4asp_Types all;
import from IPA_Emulation all;
import from SCCP_Types all;
import from SCCPasp_Types all;
import from SCCP_Emulation all;
/*
import from MobileL3_Types all;
import from MobileL3_CommonIE_Types all;
import from L3_Templates all;
import from BSSAP_Types all;
import from BSSMAP_Templates all;
*/
import from BSSMAP_Emulation all;
import from MSC_ConnectionHandler all;
type component MSC_CT {
/* component references */
var IPA_Emulation_CT vc_IPA;
var SCCP_CT vc_SCCP;
var BSSMAP_Emulation_CT vc_BSSMAP;
/* test port to SCCP emulation */
port SCCPasp_PT SCCP;
}
function main(charstring local_ip, PortNumber local_port,
MSC_SCCP_MTP3_parameters sccp_pars,
SCCP_PAR_Address sccp_addr_own) runs on MSC_CT
{
/* create components */
vc_IPA := IPA_Emulation_CT.create;
vc_SCCP := SCCP_CT.create;
vc_BSSMAP := BSSMAP_Emulation_CT.create;
map(vc_IPA:IPA_PORT, system:IPA_CODEC_PT);
/* connect MTP3 service provider (IPA) to lower side of SCCP */
connect(vc_IPA:MTP3_SP_PORT, vc_SCCP:MTP3_SCCP_PORT);
/* connect BSSNAP dispatcher to upper side of SCCP */
connect(vc_BSSMAP:SCCP, vc_SCCP:SCCP_SP_PORT);
vc_IPA.start(IPA_Emulation.main_server(local_ip, local_port));
vc_SCCP.start(SCCPStart(sccp_pars));
vc_BSSMAP.start(BSSMAP_Emulation.main(MSC_BssmapOps));
/* wait until termination of respective components */
vc_IPA.done;
vc_BSSMAP.done;
vc_SCCP.done;
}
}

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@ -47,5 +47,5 @@ gen_links $DIR $FILES
DIR=../library DIR=../library
FILES="General_Types.ttcn Osmocom_Types.ttcn IPA_Types.ttcn IPA_CodecPort.ttcn IPA_CodecPort_CtrlFunct.ttcn IPA_CodecPort_CtrlFunctDef.cc L3_Templates.ttcn BSSMAP_Templates.ttcn" FILES="General_Types.ttcn Osmocom_Types.ttcn IPA_Types.ttcn IPA_CodecPort.ttcn IPA_CodecPort_CtrlFunct.ttcn IPA_CodecPort_CtrlFunctDef.cc IPA_Emulation.ttcn L3_Templates.ttcn BSSMAP_Templates.ttcn BSSMAP_Emulation.ttcn"
gen_links $DIR $FILES gen_links $DIR $FILES

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@ -1,5 +1,6 @@
module BSSMAP_Emulation { module BSSMAP_Emulation {
import from SCCP_Emulation all;
import from SCCPasp_Types all; import from SCCPasp_Types all;
import from BSSAP_Types all; import from BSSAP_Types all;
import from BSSMAP_Templates all; import from BSSMAP_Templates all;
@ -20,10 +21,15 @@ type enumerated BSSAP_Conn_Prim {
MSC_CONN_PRIM_DISC_REQ MSC_CONN_PRIM_DISC_REQ
} }
type record BSSAP_Conn_Req {
SCCP_PAR_Address addr_peer,
SCCP_PAR_Address addr_own,
PDU_BSSAP bssap
}
/* port between individual per-connection components and this dispatcher */ /* port between individual per-connection components and this dispatcher */
type port BSSAP_Conn_PT message { type port BSSAP_Conn_PT message {
inout PDU_BSSAP; inout PDU_BSSAP, BSSAP_Conn_Prim, BSSAP_Conn_Req;
inout BSSAP_Conn_Prim;
} with { extension "internal" }; } with { extension "internal" };
@ -44,6 +50,27 @@ type component BSSMAP_Emulation_CT {
var ConnectionData ConnectionTable[16]; var ConnectionData ConnectionTable[16];
}; };
private function f_conn_id_known(integer sccp_conn_id)
runs on BSSMAP_Emulation_CT return boolean {
var integer i;
for (i := 0; i < sizeof(ConnectionTable); i := i+1) {
if (ConnectionTable[i].sccp_conn_id == sccp_conn_id){
return true;
}
}
return false;
}
private function f_comp_known(BSSAP_ConnHdlr client)
runs on BSSMAP_Emulation_CT return boolean {
var integer i;
for (i := 0; i < sizeof(ConnectionTable); i := i+1) {
if (ConnectionTable[i].comp_ref == client) {
return true;
}
}
return false;
}
/* resolve component reference by connection ID */ /* resolve component reference by connection ID */
private function f_comp_by_conn_id(integer sccp_conn_id) private function f_comp_by_conn_id(integer sccp_conn_id)
@ -70,6 +97,17 @@ runs on BSSMAP_Emulation_CT return integer {
self.stop; self.stop;
} }
private function f_gen_conn_id()
runs on BSSMAP_Emulation_CT return integer {
var integer conn_id;
do {
conn_id := float2int(rnd()*SCCP_Emulation.tsp_max_ConnectionId);
} while (f_conn_id_known(conn_id) == true);
return conn_id;
}
private function f_conn_table_init() private function f_conn_table_init()
runs on BSSMAP_Emulation_CT { runs on BSSMAP_Emulation_CT {
for (var integer i := 0; i < sizeof(ConnectionTable); i := i+1) { for (var integer i := 0; i < sizeof(ConnectionTable); i := i+1) {
@ -84,6 +122,7 @@ runs on BSSMAP_Emulation_CT {
if (ConnectionTable[i].sccp_conn_id == -1) { if (ConnectionTable[i].sccp_conn_id == -1) {
ConnectionTable[i].comp_ref := comp_ref; ConnectionTable[i].comp_ref := comp_ref;
ConnectionTable[i].sccp_conn_id := sccp_conn_id; ConnectionTable[i].sccp_conn_id := sccp_conn_id;
log("Added conn table entry ", i, comp_ref, sccp_conn_id);
return; return;
} }
} }
@ -95,6 +134,8 @@ private function f_conn_table_del(integer sccp_conn_id)
runs on BSSMAP_Emulation_CT { runs on BSSMAP_Emulation_CT {
for (var integer i := 0; i < sizeof(ConnectionTable); i := i+1) { for (var integer i := 0; i < sizeof(ConnectionTable); i := i+1) {
if (ConnectionTable[i].sccp_conn_id == sccp_conn_id) { if (ConnectionTable[i].sccp_conn_id == sccp_conn_id) {
log("Deleted conn table entry ", i,
ConnectionTable[i].comp_ref, sccp_conn_id);
ConnectionTable[i].sccp_conn_id := -1; ConnectionTable[i].sccp_conn_id := -1;
ConnectionTable[i].comp_ref := null; ConnectionTable[i].comp_ref := null;
} }
@ -135,8 +176,10 @@ function main(BssmapOps ops) runs on BSSMAP_Emulation_CT {
while (true) { while (true) {
var ASP_SCCP_N_UNITDATA_ind ud_ind; var ASP_SCCP_N_UNITDATA_ind ud_ind;
var ASP_SCCP_N_CONNECT_ind conn_ind; var ASP_SCCP_N_CONNECT_ind conn_ind;
var ASP_SCCP_N_CONNECT_cfm conn_cfm;
var ASP_SCCP_N_DATA_ind data_ind; var ASP_SCCP_N_DATA_ind data_ind;
var ASP_SCCP_N_DISCONNECT_ind disc_ind; var ASP_SCCP_N_DISCONNECT_ind disc_ind;
var BSSAP_Conn_Req creq;
var BSSAP_ConnHdlr vc_conn; var BSSAP_ConnHdlr vc_conn;
var PDU_BSSAP bssap; var PDU_BSSAP bssap;
@ -183,6 +226,12 @@ function main(BssmapOps ops) runs on BSSMAP_Emulation_CT {
/* TOOD: return confirm to other side? */ /* TOOD: return confirm to other side? */
} }
/* SCCP -> Client: connection confirm for outbound connection */
[] SCCP.receive(ASP_SCCP_N_CONNECT_cfm:?) -> value conn_cfm {
/* handle user payload */
f_handle_userData(vc_conn, conn_cfm.userData);
}
/* Disconnect request client -> SCCP */ /* Disconnect request client -> SCCP */
[] CLIENT.receive(BSSAP_Conn_Prim:MSC_CONN_PRIM_DISC_REQ) -> sender vc_conn { [] CLIENT.receive(BSSAP_Conn_Prim:MSC_CONN_PRIM_DISC_REQ) -> sender vc_conn {
var integer conn_id := f_conn_id_by_comp(vc_conn); var integer conn_id := f_conn_id_by_comp(vc_conn);
@ -191,9 +240,31 @@ function main(BssmapOps ops) runs on BSSMAP_Emulation_CT {
} }
/* BSSAP from client -> SCCP */ /* BSSAP from client -> SCCP */
[] CLIENT.receive(BSSAP_Conn_Req:?) -> value creq sender vc_conn {
var integer conn_id;
/* encode + send to dispatcher */
var octetstring userdata := enc_PDU_BSSAP(creq.bssap);
if (f_comp_known(vc_conn) == false) {
/* unknown client, create new connection */
conn_id := f_gen_conn_id();
/* store mapping between client components and SCCP connectionId */
f_conn_table_add(vc_conn, conn_id);
SCCP.send(t_ASP_N_CONNECT_req(creq.addr_peer, creq.addr_own, omit, omit,
userdata, conn_id, omit));
} else {
/* known client, send via existing connection */
conn_id := f_conn_id_by_comp(vc_conn);
SCCP.send(t_ASP_N_DATA_req(userdata, conn_id, omit));
}
}
[] CLIENT.receive(PDU_BSSAP:?) -> value bssap sender vc_conn { [] CLIENT.receive(PDU_BSSAP:?) -> value bssap sender vc_conn {
var integer conn_id := f_conn_id_by_comp(vc_conn); var integer conn_id := f_conn_id_by_comp(vc_conn);
/* encode + send to dispatcher */ /* encode + send it to dispatcher */
var octetstring userdata := enc_PDU_BSSAP(bssap); var octetstring userdata := enc_PDU_BSSAP(bssap);
SCCP.send(t_ASP_N_DATA_req(userdata, conn_id, omit)); SCCP.send(t_ASP_N_DATA_req(userdata, conn_id, omit));
} }

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@ -11,7 +11,9 @@ template PDU_BSSAP ts_BSSAP_BSSMAP := {
spare := '0000000'B, spare := '0000000'B,
dlci := omit, dlci := omit,
lengthIndicator := 0, /* overwritten by codec */ lengthIndicator := 0, /* overwritten by codec */
pdu := ? pdu := {
bssmap := ?
}
} }
template PDU_BSSAP tr_BSSAP_BSSMAP := { template PDU_BSSAP tr_BSSAP_BSSMAP := {
@ -24,6 +26,27 @@ template PDU_BSSAP tr_BSSAP_BSSMAP := {
} }
} }
template PDU_BSSAP ts_BSSAP_DTAP := {
discriminator := '1'B,
spare := '0000000'B,
dlci := omit,
lengthIndicator := 0, /* overwritten by codec */
pdu := {
dtap := ?
}
}
template PDU_BSSAP tr_BSSAP_DTAP := {
discriminator := '1'B,
spare := '0000000'B,
dlci := omit,
lengthIndicator := ?,
pdu := {
dtap := ?
}
}
template (value) BSSMAP_IE_Cause ts_BSSMAP_IE_Cause(BssmapCause val) := { template (value) BSSMAP_IE_Cause ts_BSSMAP_IE_Cause(BssmapCause val) := {
elementIdentifier := '04'O, elementIdentifier := '04'O,
lengthIndicator := 0, lengthIndicator := 0,
@ -238,4 +261,119 @@ modifies ts_BSSAP_BSSMAP := {
} }
} }
template PDU_BSSAP tr_BSSMAP_AssignmentCmd modifies tr_BSSAP_BSSMAP := {
pdu := {
bssmap := {
assignmentRequest := {
messageType :='01'O, /* overwritten */
channelType := ?,
layer3HeaderInfo := *,
priority := *,
circuitIdentityCode := ?,
downLinkDTX_Flag := *,
interferenceBandToBeUsed := *,
classmarkInformationType2 := *,
groupCallReference := *,
talkerFlag := *,
configurationEvolutionIndication := *,
lsaAccesControlSuppression := *,
serviceHandover := *,
encryptionInformation := *,
talkerPriority := *,
aoIPTransportLayer := *,
codecList := *,
callIdentifier := *,
kC128 := *,
globalCallReference := *,
lCLS_Configuration := *,
lCLS_ConnectionStatusControl := *,
lCLS_CorrelationNotNeeded := *
}
}
}
}
template (value) PDU_BSSAP ts_BSSMAP_AssignmentComplete(BSSMAP_IE_CircuitIdentityCode cic)
modifies ts_BSSAP_BSSMAP := {
pdu := {
bssmap := {
assignmentComplete := {
messageType :='02'O, /* overwritten */
circuitIdentityCode := cic,
cellIdentifier := omit,
chosenChannel := omit,
chosenEncryptionAlgorithm := omit,
circuitPool := omit,
speechVersion := omit,
lSAIdentifier := omit,
talkerPriority := omit,
aoIPTransportLayer := omit,
speechCodec := omit,
codecList := omit,
lCLS_BSS_Status := omit
}
}
}
}
template PDU_BSSAP tr_BSSMAP_AssignmentComplete modifies tr_BSSAP_BSSMAP := {
pdu := {
bssmap := {
assignmentComplete := {
messageType := '02'O, /* overwritten */
circuitIdentityCode := ?,
cellIdentifier := *,
chosenChannel := *,
chosenEncryptionAlgorithm := *,
circuitPool := *,
speechVersion := *,
lSAIdentifier := *,
talkerPriority := *,
aoIPTransportLayer := *,
speechCodec := *,
codecList := *,
lCLS_BSS_Status := *
}
}
}
}
template (value) PDU_BSSAP ts_BSSMAP_ClearCommand(BssmapCause cause)
modifies ts_BSSAP_BSSMAP := {
pdu := {
bssmap := {
clearCommand := {
messageType := '20'O, /* overwritten */
layer3HeaderInfo := omit,
cause := ts_BSSMAP_IE_Cause(cause),
cSFB_Indication := omit
}
}
}
}
template PDU_BSSAP tr_BSSMAP_ClearCommand modifies tr_BSSAP_BSSMAP := {
pdu := {
bssmap := {
clearCommand := {
messageType := '20'O, /* overwritten */
layer3HeaderInfo := *,
cause := ?,
cSFB_Indication := *
}
}
}
}
template (value) PDU_BSSAP ts_BSSMAP_ClearComplete
modifies ts_BSSAP_BSSMAP := {
pdu := {
bssmap := {
clearComplete := {
messageType := '21'O /* overwritten */
}
}
}
}
} }

View File

@ -12,6 +12,11 @@ modulepar {
} }
*/ */
type enumerated IpaMode {
IPA_MODE_CLIENT,
IPA_MODE_SERVER
}
type record ASP_IPA_Unitdata { type record ASP_IPA_Unitdata {
IpaStreamId streamId, IpaStreamId streamId,
octetstring payload octetstring payload
@ -31,6 +36,8 @@ type component IPA_Emulation_CT {
var boolean g_initialized := false; var boolean g_initialized := false;
var ConnectionId g_ipa_conn_id := -1; var ConnectionId g_ipa_conn_id := -1;
var IpaMode g_mode;
} }
function f_connect(charstring remote_host, PortNumber remote_port, function f_connect(charstring remote_host, PortNumber remote_port,
@ -41,6 +48,13 @@ function f_connect(charstring remote_host, PortNumber remote_port,
g_ipa_conn_id := res.connId; g_ipa_conn_id := res.connId;
} }
function f_bind(charstring local_host, PortNumber local_port) runs on IPA_Emulation_CT {
var Result res;
res := IPA_CodecPort_CtrlFunct.f_IPL4_listen(IPA_PORT,
local_host, local_port, { tcp:={} });
g_ipa_conn_id := res.connId;
}
template ASP_MTP3_TRANSFERind ts_MTP3_XFER_ind(integer opc, octetstring data) := { template ASP_MTP3_TRANSFERind ts_MTP3_XFER_ind(integer opc, octetstring data) := {
sio := { '10'B, '00'B, '0011'B }, sio := { '10'B, '00'B, '0011'B },
opc := opc, opc := opc,
@ -107,6 +121,15 @@ template PDU_IPA_CCM ts_IPA_ACK := {
u := omit u := omit
} }
template PDU_IPA_CCM ts_IPA_ID_GET := {
msg_type := IPAC_MSGT_ID_GET,
u := {
get := {
{ 1, IPAC_IDTAG_UNITNAME }
}
}
}
/* receive IPA CCM message */ /* receive IPA CCM message */
private function f_ccm_rx(PDU_IPA_CCM ccm) runs on IPA_Emulation_CT { private function f_ccm_rx(PDU_IPA_CCM ccm) runs on IPA_Emulation_CT {
select (ccm.msg_type) { select (ccm.msg_type) {
@ -142,12 +165,24 @@ private function f_from_asp(ConnectionId connId, ASP_IPA_Unitdata ipa_tx) return
return ret; return ret;
} }
function ScanEvents() runs on IPA_Emulation_CT { function main_client(charstring remote_host, PortNumber remote_port,
charstring local_host, PortNumber local_port) runs on IPA_Emulation_CT {
g_mode := IPA_MODE_CLIENT;
f_connect(remote_host, remote_port, local_host, local_port);
ScanEvents();
}
function main_server(charstring local_host, PortNumber local_port) runs on IPA_Emulation_CT {
g_mode := IPA_MODE_SERVER;
f_bind(local_host, local_port);
ScanEvents();
}
private function ScanEvents() runs on IPA_Emulation_CT {
var IPA_RecvFrom ipa_rx; var IPA_RecvFrom ipa_rx;
var ASP_IPA_Unitdata ipa_ud; var ASP_IPA_Unitdata ipa_ud;
var ASP_MTP3_TRANSFERreq mtp_req; var ASP_MTP3_TRANSFERreq mtp_req;
var ASP_Event asp_evt;
f_connect("127.0.0.1", 5000, "127.0.0.1", 49999);
while (true) { while (true) {
alt { alt {
@ -170,6 +205,21 @@ function ScanEvents() runs on IPA_Emulation_CT {
} }
} }
/* server only */
[] IPA_PORT.receive(ASP_Event:{connOpened:=?}) -> value asp_evt {
log("IPA: Connected");
g_ipa_conn_id := asp_evt.connOpened.connId;
if (g_mode == IPA_MODE_SERVER) {
f_ccm_tx(valueof(ts_IPA_ID_GET));
}
}
[] IPA_PORT.receive(ASP_Event:{connClosed:=?}) -> value asp_evt {
log("IPA: Closed");
g_ipa_conn_id := -1;
self.stop;
}
/* Received SCCP -> down into IPA */ /* Received SCCP -> down into IPA */
[] MTP3_SP_PORT.receive(ASP_MTP3_TRANSFERreq: ?) -> value mtp_req { [] MTP3_SP_PORT.receive(ASP_MTP3_TRANSFERreq: ?) -> value mtp_req {
var IPA_Send ipa_tx := { var IPA_Send ipa_tx := {