laforge has submitted this change. (
https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/17064 )
Change subject: hlr: add TC_MSLookup_GSUP_proxy
......................................................................
hlr: add TC_MSLookup_GSUP_proxy
Let OsmoHLR act as proxy between MSC and home HLR during Location
update.
Related: OS#4380
Change-Id: I945e651f1346e56dbe3c02d9d08ccd95cc8d6626
---
M hlr/HLR_Tests.ttcn
M hlr/gen_links.sh
M library/MSLookup_mDNS_Templates.ttcn
3 files changed, 148 insertions(+), 1 deletion(-)
Approvals:
laforge: Looks good to me, approved
Jenkins Builder: Verified
diff --git a/hlr/HLR_Tests.ttcn b/hlr/HLR_Tests.ttcn
index 5e9eea6..82c74f4 100644
--- a/hlr/HLR_Tests.ttcn
+++ b/hlr/HLR_Tests.ttcn
@@ -34,6 +34,7 @@
import from MSLookup_mDNS_Types all;
import from MSLookup_mDNS_Emulation all;
import from MSLookup_mDNS_Templates all;
+import from DNS_Helpers all;
type component test_CT extends CTRL_Adapter_CT {
/* emulated GSUP client (MSC/SGSN) */
@@ -578,6 +579,45 @@
return ret;
}
+/* Perform Location Update with IMSI that is unknown to OsmoHLR. Let it ask
for the HLR that knows the IMSI via
+ * mslookup. The TTCN-3 testsuite pretends to be the home HLR, that knows the
IMSI. The proxy HLR connects to the
+ * home HLR and forwards GSUP messages, until LU is complete.
+ * Make sure to let a timer run while calling this function (see
TC_MSLookup_GSUP_proxy). */
+function f_perform_UL_proxy(hexstring imsi, hexstring msisdn, GSUP_CnDomain
dom := OSMO_GSUP_CN_DOMAIN_PS)
+runs on HLR_ConnHdlr {
+ var MSLookup_mDNS mdns_msg;
+ var integer id;
+ var charstring domain := "gsup.hlr." & hex2str(imsi) &
".imsi.mdns.osmocom.org";
+ var octetstring destination_name := char2oct(ccm_pars_client.ser_nr) &
'00'O; /* TS-MSC IPA name */
+
+ /* Testing the HLR as proxy. The MSC asking the proxy and the home HLR
are both enacted by TTCN3 (TS).
+ * MSC=vc_GSUP_client <---> osmo-hlr as proxy <---> vc_GSUP_server=home
HLR
+ * GSUP.send(..) to vc_GSUP_client ---> osmo-hlr ---> GSUP.receive(..)
from vc_GSUP_server
+ * GSUP.receive(..) from vc_GSUP_client <--- osmo-hlr <---
GSUP.send(..) to vc_GSUP_server */
+
+ /* [GSUP] TS-MSC => HLR proxy: Update Location Request with unknown
IMSI */
+ GSUP.send(ts_GSUP_UL_REQ(imsi, dom)) to vc_GSUP_client;
+
+ /* [GSUP] TS-HLR: expect GSUP messages with that IMSI */
+ f_create_gsup_expect_explicit(hex2str(imsi), vc_GSUP_server);
+
+ /* [mDNS] TS-HLR <= HLR proxy: query for GSUP server who knows the
IMSI */
+ mDNS.receive(tr_MSLookup_mDNS_query(domain)) -> value mdns_msg;
+
+ /* [mDNS] TS-HLR => HLR proxy: result with IP/port of TS GSUP server */
+ id := mdns_msg.dnsMessage.header.id;
+ mDNS.send(ts_MSLookup_mDNS_result_IPv4(id, domain,
f_enc_IPv4(mp_hlr_ts_ip), mp_hlr_ts_port));
+
+ /* [GSUP] TS-HLR <=> HLR proxy <=> TS-MSC: finish up UL */
+ GSUP.receive(tr_GSUP_UL_REQ(imsi)) from vc_GSUP_server;
+ GSUP.send(ts_GSUP_ISD_REQ(imsi, msisdn, destination_name)) to
vc_GSUP_server;
+ GSUP.receive(tr_GSUP_ISD_REQ(imsi, g_pars.sub.msisdn)) from
vc_GSUP_client;
+ GSUP.send(ts_GSUP_ISD_RES(imsi, destination_name)) to vc_GSUP_server;
+ GSUP.receive(tr_GSUP_ISD_RES(imsi)) from vc_GSUP_client;
+ GSUP.send(ts_GSUP_UL_RES(imsi, destination_name)) to vc_GSUP_server;
+ GSUP.receive(tr_GSUP_UL_RES(imsi)) from vc_GSUP_client;
+}
+
/* perform PurgeMS for given imsi, return the GSUP response/error */
function f_perform_PURGE(hexstring imsi, GSUP_CnDomain cn_dom,
template (omit) integer exp_err_cause := omit)
@@ -1652,6 +1692,29 @@
vc_conn.done;
}
+/* Let OsmoHLR act as proxy between MSC and another HLR during UL */
+private function f_TC_MSLookup_GSUP_proxy() runs on HLR_ConnHdlr {
+ f_perform_UL_proxy(g_pars.sub.imsi, g_pars.sub.msisdn,
OSMO_GSUP_CN_DOMAIN_CS);
+ setverdict(pass);
+}
+testcase TC_MSLookup_GSUP_proxy() runs on test_CT {
+ var hexstring imsi := f_rnd_imsi('26242'H);
+ var hexstring msisdn := '49161'H & f_rnd_hexstring(7, 9);
+ var HLR_ConnHdlr vc_conn;
+ var HLR_ConnHdlrPars pars := valueof(t_Pars(imsi, msisdn));
+
+ f_init(false, true);
+ f_vty_config(VTY, "mslookup", "mdns bind");
+ vc_conn := f_start_handler(refers(f_TC_MSLookup_GSUP_proxy), pars,
true);
+
+ timer T := 3.0;
+ T.start;
+ alt {
+ [] vc_conn.done {}
+ [] T.timeout { setverdict(fail, "Timeout"); mtc.stop; };
+ }
+}
+
/* TODO:
* UL with ISD error
* UL with ISD timeout
@@ -1700,6 +1763,7 @@
if (mp_hlr_supports_dgsm) {
execute( TC_MSLookup_mDNS_service_other_home() );
+ execute( TC_MSLookup_GSUP_proxy() );
}
};
diff --git a/hlr/gen_links.sh b/hlr/gen_links.sh
index 14a3f8d..c77920d 100755
--- a/hlr/gen_links.sh
+++ b/hlr/gen_links.sh
@@ -48,7 +48,7 @@
FILES+="Osmocom_CTRL_Types.ttcn Osmocom_CTRL_Functions.ttcn
Osmocom_CTRL_Adapter.ttcn "
FILES+="Osmocom_VTY_Functions.ttcn "
FILES+="SS_Templates.ttcn USSD_Helpers.ttcn "
-FILES+="MSLookup_mDNS_Types.ttcn MSLookup_mDNS_Emulation.ttcn
MSLookup_mDNS_Templates.ttcn"
+FILES+="MSLookup_mDNS_Types.ttcn MSLookup_mDNS_Emulation.ttcn
MSLookup_mDNS_Templates.ttcn DNS_Helpers.ttcn "
gen_links $DIR $FILES
diff --git a/library/MSLookup_mDNS_Templates.ttcn
b/library/MSLookup_mDNS_Templates.ttcn
index 123ec16..3d4fafe 100644
--- a/library/MSLookup_mDNS_Templates.ttcn
+++ b/library/MSLookup_mDNS_Templates.ttcn
@@ -45,6 +45,89 @@
udpPort := 4266
}
+template MSLookup_mDNS tr_MSLookup_mDNS_query(charstring domain) := {
+ dnsMessage := {
+ header := {
+ id := ?,
+ qr := DNS_QUERY,
+ opCode := 0,
+ aa := false,
+ tc := false,
+ rd := false,
+ ra := false,
+ z := '000'B,
+ rCode := DNS_NO_ERROR,
+ qdCount := 1,
+ anCount := 0,
+ nsCount := 0,
+ arCount := 0
+ },
+ queries := {
+ {
+ qName := domain,
+ qType := 255,
+ qClass := DNS_IN
+ }
+ },
+ answers := {},
+ nameServerRecords := {},
+ additionalRecords := {}
+ },
+ udpAddress := ?,
+ udpPort := ?
+}
+
+template MSLookup_mDNS ts_MSLookup_mDNS_result_IPv4(integer id, charstring
domain, UInt32 ip_v4, integer port_v4) := {
+ dnsMessage := {
+ header := {
+ id := id,
+ qr := DNS_RESPONSE,
+ opCode := DNS_OP_QUERY,
+ aa := false,
+ tc := false,
+ rd := false,
+ ra := false,
+ z := '000'B,
+ rCode := DNS_NO_ERROR,
+ qdCount := 0,
+ anCount := 3,
+ nsCount := 0,
+ arCount := 0
+ },
+ queries := {},
+ answers := {
+ {
+ name := domain,
+ rrType := DNS_TXT,
+ rrClass := DNS_IN,
+ ttl := '00000000'O,
+ rdLength := 6,
+ rData := {txt := {"age=0"}}
+ },
+ {
+ name := domain,
+ rrType := DNS_A,
+ rrClass := DNS_IN,
+ ttl := '00000000'O,
+ rdLength := 4,
+ rData := {a := ip_v4}
+ },
+ {
+ name := domain,
+ rrType := DNS_TXT,
+ rrClass := DNS_IN,
+ ttl := '00000000'O,
+ rdLength := 1 + lengthof("port=" &
int2str(port_v4)),
+ rData := {txt := {"port=" & int2str(port_v4)}}
+ }
+ },
+ nameServerRecords := {},
+ additionalRecords := {}
+ },
+ udpAddress := "239.192.23.42",
+ udpPort := 4266
+}
+
template MSLookup_mDNS tr_MSLookup_mDNS_result_IPv4(integer id, charstring
domain, UInt32 ip_v4, integer port_v4) := {
dnsMessage := {
header := {
--
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Gerrit-Project: osmo-ttcn3-hacks
Gerrit-Branch: master
Gerrit-Change-Id: I945e651f1346e56dbe3c02d9d08ccd95cc8d6626
Gerrit-Change-Number: 17064
Gerrit-PatchSet: 5
Gerrit-Owner: osmith <[email protected]>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: laforge <[email protected]>
Gerrit-Reviewer: osmith <[email protected]>
Gerrit-CC: neels <[email protected]>
Gerrit-MessageType: merged
