diff options
Diffstat (limited to 'openbsc/tests/gbproxy/gbproxy_test.c')
| -rw-r--r-- | openbsc/tests/gbproxy/gbproxy_test.c | 168 |
1 files changed, 157 insertions, 11 deletions
diff --git a/openbsc/tests/gbproxy/gbproxy_test.c b/openbsc/tests/gbproxy/gbproxy_test.c index 0b4521fb5..93fdbe099 100644 --- a/openbsc/tests/gbproxy/gbproxy_test.c +++ b/openbsc/tests/gbproxy/gbproxy_test.c @@ -32,11 +32,13 @@ #define REMOTE_BSS_ADDR 0x01020304 #define REMOTE_SGSN_ADDR 0x05060708 -#define SGSN_NSEI 0xfffe +#define SGSN_NSEI 0x0100 struct gbproxy_config gbcfg; -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); +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); static void send_ns_reset(struct gprs_ns_inst *nsi, struct sockaddr_in *src_addr, enum ns_cause cause, uint16_t nsvci, uint16_t nsei) @@ -57,6 +59,24 @@ static void send_ns_reset(struct gprs_ns_inst *nsi, struct sockaddr_in *src_addr gprs_process_message(nsi, "RESET", src_addr, msg, sizeof(msg)); } +static void send_ns_reset_ack(struct gprs_ns_inst *nsi, struct sockaddr_in *src_addr, + uint16_t nsvci, uint16_t nsei) +{ + /* GPRS Network Service, PDU type: NS_RESET_ACK, + */ + unsigned char msg[9] = { + 0x03, 0x01, 0x82, 0x11, 0x22, + 0x04, 0x82, 0x11, 0x22 + }; + + msg[3] = nsvci / 256; + msg[4] = nsvci % 256; + msg[7] = nsei / 256; + msg[8] = nsei % 256; + + gprs_process_message(nsi, "RESET_ACK", src_addr, msg, sizeof(msg)); +} + static void send_ns_alive(struct gprs_ns_inst *nsi, struct sockaddr_in *src_addr) { /* GPRS Network Service, PDU type: NS_ALIVE */ @@ -87,8 +107,18 @@ static void send_ns_unblock(struct gprs_ns_inst *nsi, struct sockaddr_in *src_ad gprs_process_message(nsi, "UNBLOCK", src_addr, msg, sizeof(msg)); } -static void send_ns_unitdata(struct gprs_ns_inst *nsi, struct sockaddr_in *src_addr, - uint16_t nsbvci, +static void send_ns_unblock_ack(struct gprs_ns_inst *nsi, struct sockaddr_in *src_addr) +{ + /* GPRS Network Service, PDU type: NS_UNBLOCK_ACK */ + unsigned char msg[1] = { + 0x07 + }; + + gprs_process_message(nsi, "UNBLOCK_ACK", src_addr, msg, sizeof(msg)); +} + +static void send_ns_unitdata(struct gprs_ns_inst *nsi, const char *text, + struct sockaddr_in *src_addr, uint16_t nsbvci, const unsigned char *bssgp_msg, size_t bssgp_msg_size) { /* GPRS Network Service, PDU type: NS_UNITDATA */ @@ -102,7 +132,7 @@ static void send_ns_unitdata(struct gprs_ns_inst *nsi, struct sockaddr_in *src_a msg[3] = nsbvci % 256; memcpy(msg + 4, bssgp_msg, bssgp_msg_size); - gprs_process_message(nsi, "UNITDATA", src_addr, msg, bssgp_msg_size + 4); + gprs_process_message(nsi, text ? text : "UNITDATA", src_addr, msg, bssgp_msg_size + 4); } static void send_bssgp_reset(struct gprs_ns_inst *nsi, struct sockaddr_in *src_addr, @@ -119,7 +149,23 @@ static void send_bssgp_reset(struct gprs_ns_inst *nsi, struct sockaddr_in *src_a msg[3] = bvci / 256; msg[4] = bvci % 256; - send_ns_unitdata(nsi, src_addr, 0, msg, sizeof(msg)); + send_ns_unitdata(nsi, "BVC_RESET", src_addr, 0, msg, sizeof(msg)); +} + +static void send_bssgp_reset_ack(struct gprs_ns_inst *nsi, + struct sockaddr_in *src_addr, uint16_t bvci) +{ + /* GPRS Network Service, PDU type: NS_UNITDATA, BVCI 0 + * BSSGP RESET_ACK */ + static unsigned char msg[5] = { + 0x23, 0x04, 0x82, 0x00, + 0x00 + }; + + msg[3] = bvci / 256; + msg[4] = bvci % 256; + + send_ns_unitdata(nsi, "BVC_RESET_ACK", src_addr, 0, msg, sizeof(msg)); } static void setup_ns(struct gprs_ns_inst *nsi, struct sockaddr_in *src_addr, @@ -175,14 +221,19 @@ ssize_t sendto(int sockfd, const void *buf, size_t len, int flags, const struct sockaddr *, socklen_t); static sendto_t real_sendto = NULL; uint32_t dest_host = htonl(((struct sockaddr_in *)dest_addr)->sin_addr.s_addr); + int dest_port = htons(((struct sockaddr_in *)dest_addr)->sin_port); if (!real_sendto) real_sendto = dlsym(RTLD_NEXT, "sendto"); if (dest_host == REMOTE_BSS_ADDR) - printf("MESSAGE to BSS, msg length %d\n%s\n\n", len, osmo_hexdump(buf, len)); + printf("MESSAGE to BSS at 0x%08x:%d, msg length %d\n%s\n\n", + dest_host, dest_port, + len, osmo_hexdump(buf, len)); else if (dest_host == REMOTE_SGSN_ADDR) - printf("MESSAGE to SGSN, msg length %d\n%s\n\n", len, osmo_hexdump(buf, len)); + printf("MESSAGE to SGSN at 0x%08x:%d, msg length %d\n%s\n\n", + dest_host, dest_port, + len, osmo_hexdump(buf, len)); else return real_sendto(sockfd, buf, len, flags, dest_addr, addrlen); @@ -192,12 +243,17 @@ ssize_t sendto(int sockfd, const void *buf, size_t len, int flags, /* override */ int gprs_ns_sendmsg(struct gprs_ns_inst *nsi, struct msgb *msg) { + typedef int (*gprs_ns_sendmsg_t)(struct gprs_ns_inst *nsi, struct msgb *msg); + static gprs_ns_sendmsg_t real_gprs_ns_sendmsg = NULL; uint16_t bvci = msgb_bvci(msg); uint16_t nsei = msgb_nsei(msg); unsigned char *buf = msg->data; size_t len = msg->len; + if (!real_gprs_ns_sendmsg) + real_gprs_ns_sendmsg = dlsym(RTLD_NEXT, "gprs_ns_sendmsg"); + if (nsei == SGSN_NSEI) printf("NS UNITDATA MESSAGE to SGSN, BVCI 0x%04x, msg length %d\n%s\n\n", bvci, len, osmo_hexdump(buf, len)); @@ -205,7 +261,7 @@ int gprs_ns_sendmsg(struct gprs_ns_inst *nsi, struct msgb *msg) printf("NS UNITDATA MESSAGE to BSS, BVCI 0x%04x, msg length %d\n%s\n\n", bvci, len, osmo_hexdump(buf, len)); - return 0; + return real_gprs_ns_sendmsg(nsi, msg); } static void dump_rate_ctr_group(FILE *stream, const char *prefix, @@ -312,9 +368,11 @@ static void gprs_dump_nsi(struct gprs_ns_inst *nsi) 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", + printf(" VCI 0x%04x, NSEI 0x%04x, peer 0x%08x:%d%s%s\n", nsvc->nsvci, nsvc->nsei, - ntohl(peer->sin_addr.s_addr), ntohs(peer->sin_port) + ntohl(peer->sin_addr.s_addr), ntohs(peer->sin_port), + nsvc->state & NSE_S_BLOCKED ? ", blocked" : "", + nsvc->state & NSE_S_ALIVE ? "" : ", dead" ); dump_rate_ctr_group(stdout, " ", nsvc->ctrg); } @@ -325,11 +383,16 @@ static void test_gbproxy() { struct gprs_ns_inst *nsi = gprs_ns_instantiate(gprs_ns_callback, NULL); struct sockaddr_in bss_peer[4] = {{0},}; + struct sockaddr_in sgsn_peer= {0}; bssgp_nsi = nsi; gbcfg.nsi = bssgp_nsi; gbcfg.nsip_sgsn_nsei = SGSN_NSEI; + sgsn_peer.sin_family = AF_INET; + sgsn_peer.sin_port = htons(32000); + sgsn_peer.sin_addr.s_addr = htonl(REMOTE_SGSN_ADDR); + bss_peer[0].sin_family = AF_INET; bss_peer[0].sin_port = htons(1111); bss_peer[0].sin_addr.s_addr = htonl(REMOTE_BSS_ADDR); @@ -343,6 +406,15 @@ static void test_gbproxy() bss_peer[3].sin_port = htons(4444); bss_peer[3].sin_addr.s_addr = htonl(REMOTE_BSS_ADDR); + printf("--- Initialise SGSN ---\n\n"); + + gprs_ns_nsip_connect(nsi, &sgsn_peer, SGSN_NSEI, SGSN_NSEI+1); + send_ns_reset_ack(nsi, &sgsn_peer, SGSN_NSEI+1, SGSN_NSEI); + send_ns_alive_ack(nsi, &sgsn_peer); + send_ns_unblock_ack(nsi, &sgsn_peer); + send_ns_alive(nsi, &sgsn_peer); + gprs_dump_nsi(nsi); + printf("--- Initialise BSS 1 ---\n\n"); setup_ns(nsi, &bss_peer[0], 0x1001, 0x1000); @@ -350,6 +422,8 @@ static void test_gbproxy() gprs_dump_nsi(nsi); gbprox_dump_peers(stdout, 0); + send_bssgp_reset_ack(nsi, &sgsn_peer, 0x1002); + printf("--- Initialise BSS 2 ---\n\n"); setup_ns(nsi, &bss_peer[1], 0x2001, 0x2000); @@ -357,6 +431,8 @@ static void test_gbproxy() gprs_dump_nsi(nsi); gbprox_dump_peers(stdout, 0); + send_bssgp_reset_ack(nsi, &sgsn_peer, 0x2002); + printf("--- Move BSS 1 to new port ---\n\n"); setup_ns(nsi, &bss_peer[2], 0x1001, 0x1000); @@ -387,6 +463,76 @@ static void test_gbproxy() gprs_dump_nsi(nsi); gbprox_dump_peers(stdout, 0); + printf("--- Move BSS 1 to original BSS 1 port ---\n\n"); + + setup_ns(nsi, &bss_peer[0], 0x1001, 0x1000); + gprs_dump_nsi(nsi); + gbprox_dump_peers(stdout, 0); + + printf("--- Reset BSS 1 with a new BVCI ---\n\n"); + + setup_bssgp(nsi, &bss_peer[0], 0x1012); + gprs_dump_nsi(nsi); + gbprox_dump_peers(stdout, 0); + + send_bssgp_reset_ack(nsi, &sgsn_peer, 0x1012); + + printf("--- Reset BSS 1 with the old BVCI ---\n\n"); + + setup_bssgp(nsi, &bss_peer[0], 0x1002); + gprs_dump_nsi(nsi); + gbprox_dump_peers(stdout, 0); + + send_bssgp_reset_ack(nsi, &sgsn_peer, 0x1002); + + printf("--- Reset BSS 1 with the old BVCI again ---\n\n"); + + setup_bssgp(nsi, &bss_peer[0], 0x1002); + gprs_dump_nsi(nsi); + gbprox_dump_peers(stdout, 0); + + send_bssgp_reset_ack(nsi, &sgsn_peer, 0x1002); + + printf("--- Send message from BSS 1 to SGSN, BVCI 0x1012 ---\n\n"); + + send_ns_unitdata(nsi, NULL, &bss_peer[0], 0x1012, (uint8_t *)"", 0); + + printf("--- Send message from SGSN to BSS 1, BVCI 0x1012 ---\n\n"); + + send_ns_unitdata(nsi, NULL, &sgsn_peer, 0x1012, (uint8_t *)"", 0); + + printf("--- Send message from BSS 1 to SGSN, BVCI 0x1002 ---\n\n"); + + send_ns_unitdata(nsi, NULL, &bss_peer[0], 0x1012, (uint8_t *)"", 0); + + printf("--- Send message from SGSN to BSS 1, BVCI 0x1002 ---\n\n"); + + send_ns_unitdata(nsi, NULL, &sgsn_peer, 0x1012, (uint8_t *)"", 0); + + printf("--- Send message from BSS 2 to SGSN, BVCI 0x2002 ---\n\n"); + + send_ns_unitdata(nsi, NULL, &bss_peer[0], 0x2002, (uint8_t *)"", 0); + + printf("--- Send message from SGSN to BSS 2, BVCI 0x2002 ---\n\n"); + + send_ns_unitdata(nsi, NULL, &sgsn_peer, 0x2002, (uint8_t *)"", 0); + + printf("--- Reset BSS 1 with the old BVCI on BSS2's link ---\n\n"); + + setup_bssgp(nsi, &bss_peer[2], 0x1002); + gprs_dump_nsi(nsi); + gbprox_dump_peers(stdout, 0); + + send_bssgp_reset_ack(nsi, &sgsn_peer, 0x1002); + + printf("--- Send message from BSS 1 to SGSN, BVCI 0x1002 ---\n\n"); + + send_ns_unitdata(nsi, NULL, &bss_peer[0], 0x1012, (uint8_t *)"", 0); + + printf("--- Send message from SGSN to BSS 1, BVCI 0x1002 ---\n\n"); + + send_ns_unitdata(nsi, NULL, &sgsn_peer, 0x1012, (uint8_t *)"", 0); + gprs_ns_destroy(nsi); nsi = NULL; } |