From affbb2064669a58aea4a18f773eed90b15dffcf9 Mon Sep 17 00:00:00 2001 From: Oliver Smith Date: Fri, 1 Feb 2019 11:35:10 +0100 Subject: GSUP: add inter-MSC handover related msgs and IEs Based on a draft created by Neels, which is the result of reading a MAP trace of two MSCs negotiating inter-MSC handovers, and of reading the TS 29.002, TS 29.010 and related specs: https://lists.osmocom.org/pipermail/openbsc/2019-January/012653.html I figured out that the "Handover Number" mentioned in the specifications is the same as the MSISDN IE that we already have, so we can use that instead of creating a new IE (example usage in tests/gsup/gsup_test.c). Create a new OSMO_GSUP_MSGT_E_ROUTING_ERROR message type, which the GSUP server uses to tell a client that its message could not be forwarded to the destination (see [1]). MAP has no related message. [1]: Change-Id: Ia4f345abc877baaf0a8f73b8988e6514d9589bf5 (osmo-hlr.git) Related: OS#3774 Change-Id: Ic00b0601eacff6d72927cea51767801142ee75db --- tests/gsup/gsup_test.c | 249 ++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 247 insertions(+), 2 deletions(-) (limited to 'tests/gsup/gsup_test.c') diff --git a/tests/gsup/gsup_test.c b/tests/gsup/gsup_test.c index 0631a514..b84c88f0 100644 --- a/tests/gsup/gsup_test.c +++ b/tests/gsup/gsup_test.c @@ -9,9 +9,16 @@ /* Tests for osmo_gsup_messages.c */ +/* Complete IEs used multiple times (sorted alphabetically) + * 1st byte: IEI from osmo_gsup_iei, 2nd byte: length */ #define TEST_IMSI_IE 0x01, 0x08, 0x21, 0x43, 0x65, 0x87, 0x09, 0x21, 0x43, 0xf5 #define TEST_IMSI_STR "123456789012345" #define TEST_CLASS_SUBSCR_IE 0xa, 0x1, 0x1 +#define TEST_CLASS_INTER_MSC_IE 0xa, 0x1, 0x4 +#define TEST_MSISDN_IE 0x08, 0x07, 0x91, 0x94, 0x61, 0x46, 0x32, 0x24, 0x43 +#define TEST_AN_APDU_IE 0x62, 0x05, 0x01, 0x42, 0x42, 0x42, 0x42 +#define TEST_SOURCE_NAME_IE 0x60, 0x05, 'M', 'S', 'C', '-', 'A' +#define TEST_DESTINATION_NAME_IE 0x61, 0x05, 'M', 'S', 'C', '-', 'B' static void test_gsup_messages_dec_enc(void) { @@ -66,8 +73,7 @@ static void test_gsup_messages_dec_enc(void) static const uint8_t update_location_res[] = { 0x06, TEST_IMSI_IE, - 0x08, 0x07, /* MSISDN of the subscriber */ - 0x91, 0x94, 0x61, 0x46, 0x32, 0x24, 0x43, + TEST_MSISDN_IE, 0x09, 0x07, /* HLR-Number of the subscriber */ 0x91, 0x83, 0x52, 0x38, 0x48, 0x83, 0x93, 0x04, 0x00, /* PDP info complete */ @@ -312,6 +318,217 @@ static void test_gsup_messages_dec_enc(void) 0x00, /* OSMO_GSUP_IMEI_RESULT_ACK */ }; + /* Handover related test messages. Oftentimes they only differ in the + * AN_APDU_IE, which is mostly a blob in GSUP. To give a better example + * of how the messages can be used, I've added the information an_apdu + * holds in brackets (see osmo-msc.git's doc/interMSC_HO_GSUP_msgs.txt). + * The session states are from the ASCII art in this e-mail: + * https://lists.osmocom.org/pipermail/openbsc/2019-January/012653.html */ + static const uint8_t send_e_prepare_handover_req[] = { + 0x34, /* OSMO_GSUP_MSGT_E_PREPARE_HANDOVER_REQUEST */ + TEST_IMSI_IE, + + /* Session ID and state (begin) */ + 0x30, 0x04, 0xde, 0xad, 0xbe, 0xef, + 0x31, 0x01, 0x01, + + TEST_CLASS_INTER_MSC_IE, + TEST_SOURCE_NAME_IE, + TEST_DESTINATION_NAME_IE, + TEST_AN_APDU_IE, /* (Handover Request) */ + }; + + static const uint8_t send_e_prepare_handover_err[] = { + 0x35, /* OSMO_GSUP_MSGT_E_PREPARE_HANDOVER_ERROR */ + TEST_IMSI_IE, + + /* Session ID and state (continue) */ + 0x30, 0x04, 0xde, 0xad, 0xbe, 0xef, + 0x31, 0x01, 0x02, + + TEST_CLASS_INTER_MSC_IE, + TEST_SOURCE_NAME_IE, + TEST_DESTINATION_NAME_IE, + + /* cause_bssap */ + 0x64, 0x01, + 0x51, /* GSM0808_CAUSE_INVALID_MESSAGE_CONTENTS */ + }; + + static const uint8_t send_e_prepare_handover_res[] = { + 0x36, /* OSMO_GSUP_MSGT_E_PREPARE_HANDOVER_RESULT */ + TEST_IMSI_IE, + TEST_MSISDN_IE, /* (Handover Number) */ + + /* Session ID and state (continue) */ + 0x30, 0x04, 0xde, 0xad, 0xbe, 0xef, + 0x31, 0x01, 0x02, + + TEST_CLASS_INTER_MSC_IE, + TEST_SOURCE_NAME_IE, + TEST_DESTINATION_NAME_IE, + TEST_AN_APDU_IE, /* (Handover Request Ack) */ + }; + + static const uint8_t send_e_prepare_subsequent_handover_req[] = { + 0x38, /* OSMO_GSUP_MSGT_E_PREPARE_SUBSEQUENT_HANDOVER_REQUEST */ + TEST_IMSI_IE, + + /* Session ID and state (begin) */ + 0x30, 0x04, 0xde, 0xad, 0xbe, 0xef, + 0x31, 0x01, 0x01, + + TEST_CLASS_INTER_MSC_IE, + TEST_SOURCE_NAME_IE, + TEST_DESTINATION_NAME_IE, + TEST_AN_APDU_IE, /* (Handover Required) */ + }; + + static const uint8_t send_e_prepare_subsequent_handover_err[] = { + 0x39, /* OSMO_GSUP_MSGT_E_PREPARE_SUBSEQUENT_HANDOVER_ERROR */ + TEST_IMSI_IE, + + /* Session ID and state (continue) */ + 0x30, 0x04, 0xde, 0xad, 0xbe, 0xef, + 0x31, 0x01, 0x02, + + TEST_CLASS_INTER_MSC_IE, + TEST_SOURCE_NAME_IE, + TEST_DESTINATION_NAME_IE, + + /* cause_bssap */ + 0x64, 0x01, + 0x51, /* GSM0808_CAUSE_INVALID_MESSAGE_CONTENTS */ + }; + + static const uint8_t send_e_prepare_subsequent_handover_res[] = { + 0x3A, /* OSMO_GSUP_MSGT_E_PREPARE_SUBSEQUENT_HANDOVER_RESULT */ + TEST_IMSI_IE, + + /* Session ID and state (continue) */ + 0x30, 0x04, 0xde, 0xad, 0xbe, 0xef, + 0x31, 0x01, 0x02, + + TEST_CLASS_INTER_MSC_IE, + TEST_SOURCE_NAME_IE, + TEST_DESTINATION_NAME_IE, + TEST_AN_APDU_IE, /* (Handover Request Ack) */ + }; + + static const uint8_t send_e_send_end_signal_req[] = { + 0x3C, /* OSMO_GSUP_MSGT_E_SEND_END_SIGNAL_REQUEST */ + TEST_IMSI_IE, + + /* Session ID and state (end) */ + 0x30, 0x04, 0xde, 0xad, 0xbe, 0xef, + 0x31, 0x01, 0x03, + + TEST_CLASS_INTER_MSC_IE, + TEST_SOURCE_NAME_IE, + TEST_DESTINATION_NAME_IE, + TEST_AN_APDU_IE, /* (Handover Complete) */ + }; + + static const uint8_t send_e_send_end_signal_err[] = { + 0x3D, /* OSMO_GSUP_MSGT_E_SEND_END_SIGNAL_ERROR */ + TEST_IMSI_IE, + + /* Session ID and state (continue) */ + 0x30, 0x04, 0xde, 0xad, 0xbe, 0xef, + 0x31, 0x01, 0x02, + + TEST_CLASS_INTER_MSC_IE, + TEST_SOURCE_NAME_IE, + TEST_DESTINATION_NAME_IE, + + /* cause_bssap */ + 0x64, 0x01, + 0x51, /* GSM0808_CAUSE_INVALID_MESSAGE_CONTENTS */ + }; + + static const uint8_t send_e_process_access_signalling_req[] = { + 0x40, /* OSMO_GSUP_MSGT_E_PROCESS_ACCESS_SIGNALLING_REQUEST */ + TEST_IMSI_IE, + + /* Session ID and state (continue) */ + 0x30, 0x04, 0xde, 0xad, 0xbe, 0xef, + 0x31, 0x01, 0x02, + + TEST_CLASS_INTER_MSC_IE, + TEST_SOURCE_NAME_IE, + TEST_DESTINATION_NAME_IE, + TEST_AN_APDU_IE, /* (Handover Detect) */ + }; + + static const uint8_t send_e_send_end_signal_res[] = { + 0x3E, /* OSMO_GSUP_MSGT_E_SEND_END_SIGNAL_RESULT */ + TEST_IMSI_IE, + + /* Session ID and state (end) */ + 0x30, 0x04, 0xde, 0xad, 0xbe, 0xef, + 0x31, 0x01, 0x03, + + TEST_CLASS_INTER_MSC_IE, + TEST_SOURCE_NAME_IE, + TEST_DESTINATION_NAME_IE, + TEST_AN_APDU_IE, /* (Handover Complete) */ + }; + + static const uint8_t send_e_forward_access_signalling_req [] = { + 0x44, /* OSMO_GSUP_MSGT_E_FORWARD_ACCESS_SIGNALLING_REQUEST */ + TEST_IMSI_IE, + + /* Session ID and state (continue) */ + 0x30, 0x04, 0xde, 0xad, 0xbe, 0xef, + 0x31, 0x01, 0x02, + + TEST_CLASS_INTER_MSC_IE, + TEST_SOURCE_NAME_IE, + TEST_DESTINATION_NAME_IE, + TEST_AN_APDU_IE, /* (DTAP, e.g. CC, SMS, ...) */ + }; + + static const uint8_t send_e_close[] = { + 0x47, /* OSMO_GSUP_MSGT_E_CLOSE */ + TEST_IMSI_IE, + + /* Session ID and state (end) */ + 0x30, 0x04, 0xde, 0xad, 0xbe, 0xef, + 0x31, 0x01, 0x03, + + TEST_CLASS_INTER_MSC_IE, + TEST_SOURCE_NAME_IE, + TEST_DESTINATION_NAME_IE, + }; + + static const uint8_t send_e_abort[] = { + 0x4B, /* OSMO_GSUP_MSGT_E_ABORT */ + TEST_IMSI_IE, + + /* Session ID and state (end) */ + 0x30, 0x04, 0xde, 0xad, 0xbe, 0xef, + 0x31, 0x01, 0x03, + + TEST_CLASS_INTER_MSC_IE, + + /* cause_bssap */ + 0x64, 0x01, + 0x51, /* GSM0808_CAUSE_INVALID_MESSAGE_CONTENTS */ + }; + + static const uint8_t send_e_routing_error[] = { + 0x4E, /* OSMO_GSUP_MSGT_E_ROUTING_ERROR */ + TEST_IMSI_IE, + + /* Session ID and state (end) */ + 0x30, 0x04, 0xde, 0xad, 0xbe, 0xef, + 0x31, 0x01, 0x03, + + TEST_CLASS_INTER_MSC_IE, + TEST_SOURCE_NAME_IE, + TEST_DESTINATION_NAME_IE, + }; + static const struct test { char *name; const uint8_t *data; @@ -367,6 +584,34 @@ static void test_gsup_messages_dec_enc(void) send_check_imei_err, sizeof(send_check_imei_err)}, {"Check IMEI Result", send_check_imei_res, sizeof(send_check_imei_res)}, + {"E Prepare Handover Request", + send_e_prepare_handover_req, sizeof(send_e_prepare_handover_req)}, + {"E Prepare Handover Error", + send_e_prepare_handover_err, sizeof(send_e_prepare_handover_err)}, + {"E Prepare Handover Result", + send_e_prepare_handover_res, sizeof(send_e_prepare_handover_res)}, + {"E Prepare Subsequent Handover Request", + send_e_prepare_subsequent_handover_req, sizeof(send_e_prepare_subsequent_handover_req)}, + {"E Prepare Subsequent Handover Error", + send_e_prepare_subsequent_handover_err, sizeof(send_e_prepare_subsequent_handover_err)}, + {"E Prepare Subsequent Handover Result", + send_e_prepare_subsequent_handover_res, sizeof(send_e_prepare_subsequent_handover_res)}, + {"E Send End Signal Request", + send_e_send_end_signal_req, sizeof(send_e_send_end_signal_req)}, + {"E Send End Signal Error", + send_e_send_end_signal_err, sizeof(send_e_send_end_signal_err)}, + {"E Send End Signal Result", + send_e_send_end_signal_res, sizeof(send_e_send_end_signal_res)}, + {"E Process Access Signalling Request", + send_e_process_access_signalling_req, sizeof(send_e_process_access_signalling_req)}, + {"E Forward Access Signalling Request", + send_e_forward_access_signalling_req, sizeof(send_e_forward_access_signalling_req)}, + {"E Close", + send_e_close, sizeof(send_e_close)}, + {"E Abort", + send_e_abort, sizeof(send_e_abort)}, + {"E Routing Error", + send_e_routing_error, sizeof(send_e_routing_error)}, }; printf("Test GSUP message decoding/encoding\n"); -- cgit v1.2.3