From f3a271fa73ea58a628a51aa310e1da20a5526f31 Mon Sep 17 00:00:00 2001 From: Jacob Erlbeck Date: Thu, 11 Dec 2014 16:54:14 +0100 Subject: gprs: Add encoder/decoder for the Subscriber Update Protocol This patch adds functions to encode and decode GSUP messages. This does not include the layer 1 framing (IPA). The messages so far supported are: send_auth_info_*, update_location_*, location_cancellation_*. Sponsored-by: On-Waves ehf --- openbsc/tests/gprs/Makefile.am | 6 +- openbsc/tests/gprs/gprs_test.c | 137 ++++++++++++++++++++++++++++++++++++++++ openbsc/tests/gprs/gprs_test.ok | 10 +++ 3 files changed, 151 insertions(+), 2 deletions(-) (limited to 'openbsc/tests/gprs') diff --git a/openbsc/tests/gprs/Makefile.am b/openbsc/tests/gprs/Makefile.am index 193655fa4..616042b8a 100644 --- a/openbsc/tests/gprs/Makefile.am +++ b/openbsc/tests/gprs/Makefile.am @@ -5,5 +5,7 @@ EXTRA_DIST = gprs_test.ok noinst_PROGRAMS = gprs_test -gprs_test_SOURCES = gprs_test.c $(top_srcdir)/src/gprs/gprs_utils.c -gprs_test_LDADD = $(LIBOSMOCORE_LIBS) +gprs_test_SOURCES = gprs_test.c $(top_srcdir)/src/gprs/gprs_utils.c \ + $(top_srcdir)/src/gprs/gprs_gsup_messages.c + +gprs_test_LDADD = $(LIBOSMOCORE_LIBS) $(LIBOSMOGSM_LIBS) diff --git a/openbsc/tests/gprs/gprs_test.c b/openbsc/tests/gprs/gprs_test.c index 1b20db147..bf7697db8 100644 --- a/openbsc/tests/gprs/gprs_test.c +++ b/openbsc/tests/gprs/gprs_test.c @@ -5,6 +5,8 @@ #include #include +#include + #define ASSERT_FALSE(x) if (x) { printf("Should have returned false.\n"); abort(); } #define ASSERT_TRUE(x) if (!x) { printf("Should have returned true.\n"); abort(); } @@ -378,11 +380,146 @@ static void test_tlv_shift_functions() } } +/* Tests for gprs_gsup_messages.c */ + +#define TEST_IMSI_IE 0x01, 0x08, 0x21, 0x43, 0x65, 0x87, 0x09, 0x21, 0x43, 0xf5 +#define TEST_IMSI_STR "123456789012345" + +static void test_gsup_messages_dec_enc(void) +{ + int test_idx; + int rc; + + static const uint8_t send_auth_info_req[] = { + 0x08, + TEST_IMSI_IE + }; + + static const uint8_t send_auth_info_err[] = { + 0x09, + TEST_IMSI_IE, + 0x02, 0x01, 0x07 /* GPRS no allowed */ + }; + + static const uint8_t send_auth_info_res[] = { + 0x0a, + TEST_IMSI_IE, + 0x03, 0x22, /* Auth tuple */ + 0x20, 0x10, + 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, + 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, + 0x21, 0x04, + 0x21, 0x22, 0x23, 0x24, + 0x22, 0x08, + 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, + 0x03, 0x22, /* Auth tuple */ + 0x20, 0x10, + 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, + 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, 0x90, + 0x21, 0x04, + 0xa1, 0xa2, 0xa3, 0xa4, + 0x22, 0x08, + 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, + }; + + static const uint8_t update_location_req[] = { + 0x04, + TEST_IMSI_IE, + }; + + static const uint8_t update_location_err[] = { + 0x05, + TEST_IMSI_IE, + 0x02, 0x01, 0x07 /* GPRS no allowed */ + }; + + static const uint8_t update_location_res[] = { + 0x06, + TEST_IMSI_IE, + 0x04, 0x00, /* PDP info complete */ + 0x05, 0x12, + 0x10, 0x01, 0x01, + 0x11, 0x02, 0xf1, 0x21, /* IPv4 */ + 0x12, 0x09, 0x04, 't', 'e', 's', 't', 0x03, 'a', 'p', 'n', + 0x05, 0x11, + 0x10, 0x01, 0x02, + 0x11, 0x02, 0xf1, 0x21, /* IPv4 */ + 0x12, 0x08, 0x03, 'f', 'o', 'o', 0x03, 'a', 'p', 'n', + }; + + static const uint8_t location_cancellation_req[] = { + 0x1c, + TEST_IMSI_IE, + 0x06, 0x01, 0x00, + }; + + static const uint8_t location_cancellation_err[] = { + 0x1d, + TEST_IMSI_IE, + 0x02, 0x01, 0x03 /* Illegal MS */ + }; + + static const uint8_t location_cancellation_res[] = { + 0x1e, + TEST_IMSI_IE, + }; + + static const struct test { + char *name; + const uint8_t *data; + size_t data_len; + } test_messages[] = { + {"Send Authentication Info Request", + send_auth_info_req, sizeof(send_auth_info_req)}, + {"Send Authentication Info Error", + send_auth_info_err, sizeof(send_auth_info_err)}, + {"Send Authentication Info Result", + send_auth_info_res, sizeof(send_auth_info_res)}, + {"Update Location Request", + update_location_req, sizeof(update_location_req)}, + {"Update Location Error", + update_location_err, sizeof(update_location_err)}, + {"Update Location Result", + update_location_res, sizeof(update_location_res)}, + {"Location Cancellation Request", + location_cancellation_req, sizeof(location_cancellation_req)}, + {"Location Cancellation Error", + location_cancellation_err, sizeof(location_cancellation_err)}, + {"Location Cancellation Result", + location_cancellation_res, sizeof(location_cancellation_res)}, + }; + + printf("Test GSUP message decoding/encoding\n"); + + for (test_idx = 0; test_idx < ARRAY_SIZE(test_messages); test_idx++) { + const struct test *t = &test_messages[test_idx]; + struct gprs_gsup_message gm = {0}; + struct msgb *msg = msgb_alloc(4096, "gsup_test"); + + printf(" Testing %s\n", t->name); + + rc = gprs_gsup_decode(t->data, t->data_len, &gm); + OSMO_ASSERT(rc >= 0); + + gprs_gsup_encode(msg, &gm); + + fprintf(stderr, " generated message: %s\n", msgb_hexdump(msg)); + fprintf(stderr, " original message: %s\n", osmo_hexdump(t->data, t->data_len)); + fprintf(stderr, " IMSI: %s\n", gm.imsi); + OSMO_ASSERT(strcmp(gm.imsi, TEST_IMSI_STR) == 0); + OSMO_ASSERT(msgb_length(msg) == t->data_len); + OSMO_ASSERT(memcmp(msgb_data(msg), t->data, t->data_len) == 0); + + msgb_free(msg); + } +} + int main(int argc, char **argv) { test_8_4_2(); test_gsm_03_03_apn(); test_tlv_shift_functions(); + test_gsup_messages_dec_enc(); printf("Done.\n"); return EXIT_SUCCESS; diff --git a/openbsc/tests/gprs/gprs_test.ok b/openbsc/tests/gprs/gprs_test.ok index 56d4b6543..eda1f36cf 100644 --- a/openbsc/tests/gprs/gprs_test.ok +++ b/openbsc/tests/gprs/gprs_test.ok @@ -14,4 +14,14 @@ N(U) = 510, V(UR) = 511 => retransmit N(U) = 481, V(UR) = 511 => retransmit N(U) = 479, V(UR) = 511 => new Test shift functions +Test GSUP message decoding/encoding + Testing Send Authentication Info Request + Testing Send Authentication Info Error + Testing Send Authentication Info Result + Testing Update Location Request + Testing Update Location Error + Testing Update Location Result + Testing Location Cancellation Request + Testing Location Cancellation Error + Testing Location Cancellation Result Done. -- cgit v1.2.3