[PATCH 3/7] tests/gb: Add test for GPRS NS protocol

This tests the connection establishment by directly calling gprs_ns_rcvmsg() and printing the resulting messages and the NS-VC list. --- tests/Makefile.am | 7 +- tests/gb/gprs_ns_test.c | 247 ++++++++++++++++++++++++++++++++++++++++++++++ tests/gb/gprs_ns_test.ok | 124 +++++++++++++++++++++++ tests/testsuite.at | 6 ++ 4 files changed, 383 insertions(+), 1 deletion(-) create mode 100644 tests/gb/gprs_ns_test.c create mode 100644 tests/gb/gprs_ns_test.ok diff --git a/tests/Makefile.am b/tests/Makefile.am index ecb2b6c..1bb26ce 100644 --- a/tests/Makefile.am +++ b/tests/Makefile.am @@ -4,7 +4,8 @@ check_PROGRAMS = timer/timer_test sms/sms_test ussd/ussd_test \ smscb/smscb_test bits/bitrev_test a5/a5_test \ conv/conv_test auth/milenage_test lapd/lapd_test \ gsm0808/gsm0808_test gsm0408/gsm0408_test \ - gb/bssgp_fc_test logging/logging_test fr/fr_test \ + gb/bssgp_fc_test gb/gprs_ns_test \ + logging/logging_test fr/fr_test \ loggingrb/loggingrb_test strrb/strrb_test \ vty/vty_test @@ -51,6 +52,9 @@ ussd_ussd_test_LDADD = $(top_builddir)/src/libosmocore.la $(top_builddir)/src/gs gb_bssgp_fc_test_SOURCES = gb/bssgp_fc_test.c gb_bssgp_fc_test_LDADD = $(top_builddir)/src/libosmocore.la $(top_builddir)/src/gb/libosmogb.la +gb_gprs_ns_test_SOURCES = gb/gprs_ns_test.c +gb_gprs_ns_test_LDADD = $(top_builddir)/src/libosmocore.la $(top_builddir)/src/gb/libosmogb.la $(LIBRARY_DL) + logging_logging_test_SOURCES = logging/logging_test.c logging_logging_test_LDADD = $(top_builddir)/src/libosmocore.la @@ -92,6 +96,7 @@ EXTRA_DIST = testsuite.at $(srcdir)/package.m4 $(TESTSUITE) \ lapd/lapd_test.ok gsm0408/gsm0408_test.ok \ gsm0808/gsm0808_test.ok gb/bssgp_fc_tests.err \ gb/bssgp_fc_tests.ok gb/bssgp_fc_tests.sh \ + gb/gprs_ns_test.ok \ msgfile/msgfile_test.ok msgfile/msgconfig.cfg \ logging/logging_test.ok logging/logging_test.err \ fr/fr_test.ok loggingrb/logging_test.ok \ diff --git a/tests/gb/gprs_ns_test.c b/tests/gb/gprs_ns_test.c new file mode 100644 index 0000000..7423ff9 --- /dev/null +++ b/tests/gb/gprs_ns_test.c @@ -0,0 +1,247 @@ +/* test routines for NS connection handling + * (C) 2013 by Sysmocom GmbH + * Author: Jacob Erlbeck &lt;jerlbeck(a)sysmocom.de&gt; + */ + +#undef _GNU_SOURCE +#define _GNU_SOURCE + +#include <stdio.h> +#include <stdlib.h> +#include <stdint.h> +#include <string.h> +#include <getopt.h> +#include <dlfcn.h> +#include <sys/types.h> +#include <sys/socket.h> + +#include <osmocom/core/msgb.h> +#include <osmocom/core/application.h> +#include <osmocom/core/utils.h> +#include <osmocom/core/logging.h> +#include <osmocom/core/talloc.h> +#include <osmocom/gprs/gprs_msgb.h> +#include <osmocom/gprs/gprs_ns.h> +#include <osmocom/gprs/gprs_bssgp.h> + + +/* GPRS Network Service, PDU type: NS_RESET, + * Cause: O&M intervention, NS VCI: 0x1122, NSEI 0x1122 + */ +static const unsigned char gprs_ns_reset[12] = { + 0x02, 0x00, 0x81, 0x01, 0x01, 0x82, 0x11, 0x22, + 0x04, 0x82, 0x11, 0x22 +}; + +/* GPRS Network Service, PDU type: NS_RESET, + * Cause: O&M intervention, NS VCI: 0x3344, NSEI 0x1122 + */ +static const unsigned char gprs_ns_reset_vci2[12] = { + 0x02, 0x00, 0x81, 0x01, 0x01, 0x82, 0x33, 0x44, + 0x04, 0x82, 0x11, 0x22 +}; + +/* GPRS Network Service, PDU type: NS_RESET, + * Cause: O&M intervention, NS VCI: 0x1122, NSEI 0x3344 + */ +static const unsigned char gprs_ns_reset_nsei2[12] = { + 0x02, 0x00, 0x81, 0x01, 0x01, 0x82, 0x11, 0x22, + 0x04, 0x82, 0x33, 0x44 +}; + +/* GPRS Network Service, PDU type: NS_ALIVE */ +static const unsigned char gprs_ns_alive[1] = { + 0x0a +}; + +/* GPRS Network Service, PDU type: NS_STATUS, + * Cause: PDU not compatible with the protocol state + * PDU: NS_ALIVE + */ +static const unsigned char gprs_ns_status_invalid_alive[7] = { + 0x08, 0x00, 0x81, 0x0a, 0x02, 0x81, 0x0a +}; + +/* GPRS Network Service, PDU type: NS_ALIVE_ACK */ +static const unsigned char gprs_ns_alive_ack[1] = { + 0x0b +}; + +/* GPRS Network Service, PDU type: NS_UNBLOCK */ +static const unsigned char gprs_ns_unblock[1] = { + 0x06 +}; + + +/* GPRS Network Service, PDU type: NS_STATUS, + * Cause: PDU not compatible with the protocol state + * PDU: NS_RESET_ACK, NS VCI: 0x1122, NSEI 0x1122 + */ +static const unsigned char gprs_ns_status_invalid_reset_ack[15] = { + 0x08, 0x00, 0x81, 0x0a, 0x02, 0x89, 0x03, 0x01, + 0x82, 0x11, 0x22, 0x04, 0x82, 0x11, 0x22 +}; + +/* GPRS Network Service, PDU type: NS_UNITDATA, BVCI 0 */ +static const unsigned char gprs_bssgp_reset[22] = { + 0x00, 0x00, 0x00, 0x00, 0x22, 0x04, 0x82, 0x4a, + 0x2e, 0x07, 0x81, 0x08, 0x08, 0x88, 0x10, 0x20, + 0x30, 0x40, 0x50, 0x60, 0x10, 0x00 +}; + +int gprs_ns_rcvmsg(struct gprs_ns_inst *nsi, struct msgb *msg, + struct sockaddr_in *saddr, enum gprs_ns_ll ll); + +/* override */ +int gprs_ns_callback(enum gprs_ns_evt event, struct gprs_nsvc *nsvc, + struct msgb *msg, uint16_t bvci) +{ + printf("CALLBACK, event %d, msg length %d, bvci 0x%04x\n%s\n\n", + event, msgb_bssgp_len(msg), bvci, + osmo_hexdump(msgb_bssgph(msg), msgb_bssgp_len(msg))); + return 0; +} + +/* override */ +ssize_t sendto(int sockfd, const void *buf, size_t len, int flags, + const struct sockaddr *dest_addr, socklen_t addrlen) +{ + typedef ssize_t (*sendto_t)(int, const void *, size_t, int, + const struct sockaddr *, socklen_t); + static sendto_t real_sendto = NULL; + + if (!real_sendto) + real_sendto = dlsym(RTLD_NEXT, "sendto"); + + if (sockfd != 0xdead && ((struct sockaddr_in *)dest_addr)->sin_addr.s_addr != htonl(0x01020304)) + return real_sendto(sockfd, buf, len, flags, dest_addr, addrlen); + + printf("RESPONSE, msg length %d\n%s\n\n", len, osmo_hexdump(buf, len)); + + return len; +} + +static int gprs_process_message(struct gprs_ns_inst *nsi, const char *text, struct sockaddr_in *peer, const unsigned char* data, size_t data_len) +{ + struct msgb *msg; + int ret; + if (data_len > NS_ALLOC_SIZE - NS_ALLOC_HEADROOM) { + fprintf(stderr, "message too long: %d\n", data_len); + return -1; + } + + msg = gprs_ns_msgb_alloc(); + memmove(msg->data, data, data_len); + msg->l2h = msg->data; + msgb_put(msg, data_len); + + printf("PROCESSING %s from 0x%08x:%d\n%s\n\n", + text, ntohl(peer->sin_addr.s_addr), ntohs(peer->sin_port), + osmo_hexdump(data, data_len)); + + ret = gprs_ns_rcvmsg(nsi, msg, peer, GPRS_NS_LL_UDP); + + printf("result (%s) = %d\n\n", text, ret); + + msgb_free(msg); + + return ret; +} + +static void gprs_dump_nsi(struct gprs_ns_inst *nsi) +{ + struct gprs_nsvc *nsvc; + + printf("Current NS-VCIs:\n"); + llist_for_each_entry(nsvc, &nsi->gprs_nsvcs, list) { + struct sockaddr_in *peer = &(nsvc->ip.bts_addr); + printf(" VCI 0x%04x, NSEI 0x%04x, peer 0x%08x:%d\n", + nsvc->nsvci, nsvc->nsei, + ntohl(peer->sin_addr.s_addr), ntohs(peer->sin_port) + ); + } + printf("\n"); +} + +static void test_ns() +{ + struct gprs_ns_inst *nsi = gprs_ns_instantiate(gprs_ns_callback, NULL); + struct sockaddr_in peer[4] = {{0},}; + + peer[0].sin_family = AF_INET; + peer[0].sin_port = htons(1111); + peer[0].sin_addr.s_addr = htonl(0x01020304); + peer[1].sin_family = AF_INET; + peer[1].sin_port = htons(2222); + peer[1].sin_addr.s_addr = htonl(0x01020304); + peer[2].sin_family = AF_INET; + peer[2].sin_port = htons(3333); + peer[2].sin_addr.s_addr = htonl(0x01020304); + peer[3].sin_family = AF_INET; + peer[3].sin_port = htons(4444); + peer[3].sin_addr.s_addr = htonl(0x01020304); + + gprs_process_message(nsi, "RESET", &peer[0], + gprs_ns_reset, sizeof(gprs_ns_reset)); + gprs_dump_nsi(nsi); + gprs_process_message(nsi, "ALIVE", &peer[0], + gprs_ns_alive, sizeof(gprs_ns_alive)); + gprs_process_message(nsi, "UNBLOCK", &peer[0], + gprs_ns_unblock, sizeof(gprs_ns_unblock)); + gprs_process_message(nsi, "BSSGP RESET", &peer[0], + gprs_bssgp_reset, sizeof(gprs_bssgp_reset)); + + printf("--- Peer port changes, RESET, message remains unchanged ---\n\n"); + + gprs_process_message(nsi, "RESET", &peer[1], + gprs_ns_reset, sizeof(gprs_ns_reset)); + gprs_dump_nsi(nsi); + + printf("--- Peer port changes, RESET, VCI changes ---\n\n"); + + gprs_process_message(nsi, "RESET", &peer[2], + gprs_ns_reset_vci2, sizeof(gprs_ns_reset_vci2)); + gprs_dump_nsi(nsi); + + printf("--- Peer port changes, RESET, NSEI changes ---\n\n"); + + gprs_process_message(nsi, "RESET", &peer[3], + gprs_ns_reset_nsei2, sizeof(gprs_ns_reset_nsei2)); + gprs_dump_nsi(nsi); + + printf("--- Peer port 3333, RESET, VCI is changed back ---\n\n"); + + gprs_process_message(nsi, "RESET", &peer[2], + gprs_ns_reset, sizeof(gprs_ns_reset)); + gprs_dump_nsi(nsi); + + printf("--- Peer port 4444, RESET, NSEI is changed back ---\n\n"); + + gprs_process_message(nsi, "RESET", &peer[3], + gprs_ns_reset, sizeof(gprs_ns_reset)); + gprs_dump_nsi(nsi); + + gprs_ns_destroy(nsi); + nsi = NULL; +} + + +int bssgp_prim_cb(struct osmo_prim_hdr *oph, void *ctx) +{ + return -1; +} + +static struct log_info info = {}; + +int main(int argc, char **argv) +{ + osmo_init_logging(&info); + log_set_use_color(osmo_stderr_target, 0); + log_set_print_filename(osmo_stderr_target, 0); + + printf("===== NS protocol test START\n"); + test_ns(); + printf("===== NS protocol test END\n\n"); + + exit(EXIT_SUCCESS); +} diff --git a/tests/gb/gprs_ns_test.ok b/tests/gb/gprs_ns_test.ok new file mode 100644 index 0000000..4a44907 --- /dev/null +++ b/tests/gb/gprs_ns_test.ok @@ -0,0 +1,124 @@ +===== NS protocol test START +PROCESSING RESET from 0x01020304:1111 +02 00 81 01 01 82 11 22 04 82 11 22 + +RESPONSE, msg length 1 +0a + +RESPONSE, msg length 9 +03 01 82 11 22 04 82 11 22 + +result (RESET) = 9 + +Current NS-VCIs: + VCI 0x1122, NSEI 0x1122, peer 0x01020304:1111 + +PROCESSING ALIVE from 0x01020304:1111 +0a + +RESPONSE, msg length 1 +0b + +result (ALIVE) = 1 + +PROCESSING UNBLOCK from 0x01020304:1111 +06 + +RESPONSE, msg length 1 +07 + +result (UNBLOCK) = 1 + +PROCESSING BSSGP RESET from 0x01020304:1111 +00 00 00 00 22 04 82 4a 2e 07 81 08 08 88 10 20 30 40 50 60 10 00 + +CALLBACK, event 0, msg length 18, bvci 0x0000 +22 04 82 4a 2e 07 81 08 08 88 10 20 30 40 50 60 10 00 + +result (BSSGP RESET) = 0 + +--- Peer port changes, RESET, message remains unchanged --- + +PROCESSING RESET from 0x01020304:2222 +02 00 81 01 01 82 11 22 04 82 11 22 + +RESPONSE, msg length 1 +0a + +RESPONSE, msg length 9 +03 01 82 11 22 04 82 11 22 + +result (RESET) = 9 + +Current NS-VCIs: + VCI 0x1122, NSEI 0x1122, peer 0x01020304:2222 + +--- Peer port changes, RESET, VCI changes --- + +PROCESSING RESET from 0x01020304:3333 +02 00 81 01 01 82 33 44 04 82 11 22 + +RESPONSE, msg length 1 +0a + +RESPONSE, msg length 9 +03 01 82 33 44 04 82 11 22 + +result (RESET) = 9 + +Current NS-VCIs: + VCI 0x3344, NSEI 0x1122, peer 0x01020304:3333 + +--- Peer port changes, RESET, NSEI changes --- + +PROCESSING RESET from 0x01020304:4444 +02 00 81 01 01 82 11 22 04 82 33 44 + +RESPONSE, msg length 1 +0a + +RESPONSE, msg length 9 +03 01 82 11 22 04 82 33 44 + +result (RESET) = 9 + +Current NS-VCIs: + VCI 0x1122, NSEI 0x3344, peer 0x01020304:4444 + VCI 0x3344, NSEI 0x1122, peer 0x01020304:3333 + +--- Peer port 3333, RESET, VCI is changed back --- + +PROCESSING RESET from 0x01020304:3333 +02 00 81 01 01 82 11 22 04 82 11 22 + +RESPONSE, msg length 1 +0a + +RESPONSE, msg length 9 +03 01 82 11 22 04 82 11 22 + +result (RESET) = 9 + +Current NS-VCIs: + VCI 0x1122, NSEI 0x3344, peer 0x01020304:4444 + VCI 0x1122, NSEI 0x1122, peer 0x01020304:3333 + +--- Peer port 4444, RESET, NSEI is changed back --- + +PROCESSING RESET from 0x01020304:4444 +02 00 81 01 01 82 11 22 04 82 11 22 + +RESPONSE, msg length 1 +0a + +RESPONSE, msg length 9 +03 01 82 11 22 04 82 11 22 + +result (RESET) = 9 + +Current NS-VCIs: + VCI 0x1122, NSEI 0x1122, peer 0x01020304:4444 + VCI 0x1122, NSEI 0x1122, peer 0x01020304:3333 + +===== NS protocol test END + diff --git a/tests/testsuite.at b/tests/testsuite.at index 97d0adc..0685832 100644 --- a/tests/testsuite.at +++ b/tests/testsuite.at @@ -106,6 +106,12 @@ cat $abs_srcdir/vty/vty_test.ok > expout AT_CHECK([$abs_top_builddir/tests/vty/vty_test], [0], [expout], [ignore]) AT_CLEANUP +AT_SETUP([gprs-ns]) +AT_KEYWORDS([gprs-ns]) +cat $abs_srcdir/gb/gprs_ns_test.ok > expout +AT_CHECK([$abs_top_builddir/tests/gb/gprs_ns_test], [0], [expout], [ignore]) +AT_CLEANUP + AT_SETUP([bssgp-fc]) AT_KEYWORDS([bssgp-fc]) cat $abs_srcdir/gb/bssgp_fc_tests.ok > expout -- 1.7.9.5