diff options
author | Harald Welte <laforge@gnumonks.org> | 2017-11-23 18:22:10 +0100 |
---|---|---|
committer | Harald Welte <laforge@gnumonks.org> | 2017-11-23 18:23:38 +0100 |
commit | b3414b217219283666e01928e0b193211d2b3159 (patch) | |
tree | 23f5d65c3e26ef2114c0bf3444c8f61d4bdfaa0e /ipa | |
parent | 365f4edbd8dceb0048b15b43299511db104443da (diff) |
ipa: First version that emulates both MSC and BSC up to ASSIGNMENT REQ
Diffstat (limited to 'ipa')
-rw-r--r-- | ipa/BSC_MS_ConnectionHandler.ttcn | 105 | ||||
-rw-r--r-- | ipa/BSC_MS_Simulation.ttcn | 77 | ||||
-rw-r--r-- | ipa/IPA_Test.ttcn | 148 | ||||
-rw-r--r-- | ipa/MSC_ConnectionHandler.ttcn | 2 | ||||
-rwxr-xr-x | ipa/MSC_Simulation.ttcn | 59 | ||||
-rwxr-xr-x | ipa/gen_links.sh | 2 |
6 files changed, 315 insertions, 78 deletions
diff --git a/ipa/BSC_MS_ConnectionHandler.ttcn b/ipa/BSC_MS_ConnectionHandler.ttcn new file mode 100644 index 00000000..443babee --- /dev/null +++ b/ipa/BSC_MS_ConnectionHandler.ttcn @@ -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); + } + } + } +} + +} diff --git a/ipa/BSC_MS_Simulation.ttcn b/ipa/BSC_MS_Simulation.ttcn new file mode 100644 index 00000000..c33e8484 --- /dev/null +++ b/ipa/BSC_MS_Simulation.ttcn @@ -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)); +} + +} diff --git a/ipa/IPA_Test.ttcn b/ipa/IPA_Test.ttcn index 4e87fa68..c8b82053 100644 --- a/ipa/IPA_Test.ttcn +++ b/ipa/IPA_Test.ttcn @@ -1,48 +1,58 @@ module IPA_Test { +import from Osmocom_Types all; + import from IPL4asp_Types all; import from IPA_Emulation all; +import from MTP3asp_Types 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 MSC_Simulation all; +import from BSC_MS_Simulation all; + +const integer NUM_MSC := 1; +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 +} -import from BSSAP_Types all; -import from BSSMAP_Templates all; +type record MscState { + MSC_CT MSC, + MSC_SCCP_MTP3_parameters sccp_pars, + SCCP_PAR_Address sccp_addr_own +} type component test_CT { - /* component references */ - var IPA_Emulation_CT vc_IPA; - var SCCP_CT vc_SCCP; - /* test port to SCCP emulation */ - port SCCPasp_PT SCCP; + var MscState msc[NUM_MSC]; + var BscState bsc[NUM_BSC]; var boolean g_initialized := false; - var octetstring g_sio; - 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; + var octetstring g_sio := '83'O; } modulepar { - PortNumber mp_local_port := 0; - charstring mp_local_ip := "127.0.0.1"; - PortNumber mp_remote_port := 3002; - charstring mp_remote_ip := "127.0.0.1"; + PortNumber mp_bsc_port := 49999; + charstring mp_bsc_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"; - integer mp_own_pc := 196; - integer mp_own_ssn := 254; + integer mp_bsc_pc := 196; + integer mp_bsc_ssn := 254; - integer mp_peer_pc := 185; /* 0.23.1 */ - integer mp_peer_ssn := 254; + integer mp_msc_pc := 185; /* 0.23.1 */ + integer mp_msc_ssn := 254; } /* 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 } - -function f_gen_cl3() return PDU_BSSAP { - var MobileIdentityLV mi := valueof(ts_MI_IMSI_LV('901770123456789'H)); - 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; +template MTP3_Field_sio ts_sio(octetstring sio_in) := { + ni := substr(oct2bit(sio_in),0,2), + prio := substr(oct2bit(sio_in),2,2), + si := substr(oct2bit(sio_in),4,4) } -function f_send_bssap_cc(PDU_BSSAP bssap) runs on test_CT { - var ASP_SCCP_N_CONNECT_req prim; - prim := valueof(t_ASP_N_CONNECT_req(g_sccp_addr_peer, g_sccp_addr_own, omit, omit, - enc_PDU_BSSAP(bssap), 23, omit)); - SCCP.send(prim); +template MSC_SCCP_MTP3_parameters ts_SCCP_Pars(octetstring sio, integer opc, integer dpc, + integer local_ssn) := { + sio := ts_sio(sio), + opc := opc, + 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 { - g_sio := '83'O; - g_sccp_pars := { - sio := { - 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)); +function f_init_MscState(inout MscState msc_st, integer opc, integer dpc, integer local_ssn, integer remote_ssn) +runs on test_CT { + msc_st.sccp_pars := valueof(ts_SCCP_Pars(g_sio, opc, dpc, local_ssn)); + msc_st.sccp_addr_own := valueof(ts_SccpAddr_PC_SSN(opc, local_ssn)); } -private function f_init() runs on test_CT { - var Result res; +function f_init() runs on test_CT { + var integer i; - if (g_initialized == true) { - return; + for (i := 0; i < NUM_MSC; i := i+1) { + 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(); - - /* 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)); + 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)); + } - //IPA_Emulation.f_connect(mp_remote_ip, mp_remote_port, mp_local_ip, mp_local_port); } testcase TC_recv_dump() runs on test_CT { f_init(); - var PDU_BSSAP bssap := f_gen_cl3(); - f_send_bssap_cc(bssap); + //var PDU_BSSAP bssap := f_gen_cl3(); + //f_send_bssap_cc(bssap); while (true) { - SCCP.receive; + //SCCP.receive; } } diff --git a/ipa/MSC_ConnectionHandler.ttcn b/ipa/MSC_ConnectionHandler.ttcn index 0d7cd20b..9cec5562 100644 --- a/ipa/MSC_ConnectionHandler.ttcn +++ b/ipa/MSC_ConnectionHandler.ttcn @@ -52,7 +52,7 @@ const BssmapOps MSC_BssmapOps := { /* main function processing various incoming events */ function main(integer connection_id, integer timeslot) runs on MSC_ConnHdlr { g_sccp_conn_id := connection_id; - g_e1_timeslot := timeslot + g_e1_timeslot := 1; /* FIXME */ while (true) { var PDU_BSSAP bssap; diff --git a/ipa/MSC_Simulation.ttcn b/ipa/MSC_Simulation.ttcn new file mode 100755 index 00000000..8c941884 --- /dev/null +++ b/ipa/MSC_Simulation.ttcn @@ -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; +} + +} diff --git a/ipa/gen_links.sh b/ipa/gen_links.sh index d9bc7a4f..be11ec05 100755 --- a/ipa/gen_links.sh +++ b/ipa/gen_links.sh @@ -47,5 +47,5 @@ gen_links $DIR $FILES 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 |