| #include <string.h> |
| #include <stdio.h> |
| #include <errno.h> |
| #include <signal.h> |
| |
| #include <osmocom/core/linuxlist.h> |
| #include <osmocom/core/msgb.h> |
| #include <osmocom/core/select.h> |
| #include <osmocom/core/application.h> |
| #include <osmocom/gsm/gsup.h> |
| |
| #include <openbsc/gprs_gsup_client.h> |
| #include <openbsc/debug.h> |
| |
| static struct gprs_gsup_client *g_gc; |
| |
| |
| /*********************************************************************** |
| * IMSI Operation |
| ***********************************************************************/ |
| static LLIST_HEAD(g_imsi_ops); |
| |
| struct imsi_op_stats { |
| uint32_t num_alloc; |
| uint32_t num_released; |
| uint32_t num_rx_success; |
| uint32_t num_rx_error; |
| uint32_t num_timeout; |
| }; |
| |
| enum imsi_op_type { |
| IMSI_OP_SAI, |
| IMSI_OP_LU, |
| IMSI_OP_ISD, |
| _NUM_IMSI_OP |
| }; |
| |
| static const struct value_string imsi_op_names[] = { |
| { IMSI_OP_SAI, "SAI" }, |
| { IMSI_OP_LU, "LU" }, |
| { IMSI_OP_ISD, "ISD" }, |
| { 0, NULL } |
| }; |
| |
| static struct imsi_op_stats imsi_op_stats[_NUM_IMSI_OP]; |
| |
| struct imsi_op { |
| struct llist_head list; |
| char imsi[17]; |
| enum imsi_op_type type; |
| struct osmo_timer_list timer; |
| }; |
| |
| static struct imsi_op *imsi_op_find(const char *imsi, |
| enum imsi_op_type type) |
| { |
| struct imsi_op *io; |
| |
| llist_for_each_entry(io, &g_imsi_ops, list) { |
| if (!strcmp(io->imsi, imsi) && io->type == type) |
| return io; |
| } |
| return NULL; |
| } |
| |
| static void imsi_op_timer_cb(void *data); |
| |
| static struct imsi_op *imsi_op_alloc(void *ctx, const char *imsi, |
| enum imsi_op_type type) |
| { |
| struct imsi_op *io; |
| |
| if (imsi_op_find(imsi, type)) |
| return NULL; |
| |
| io = talloc_zero(ctx, struct imsi_op); |
| strncpy(io->imsi, imsi, sizeof(io->imsi)); |
| io->imsi[sizeof(io->imsi)-1] = '\0'; |
| io->type = type; |
| io->timer.cb = imsi_op_timer_cb; |
| io->timer.data = io; |
| llist_add(&io->list, &g_imsi_ops); |
| imsi_op_stats[type].num_alloc++; |
| |
| return io; |
| } |
| |
| static void imsi_op_release(struct imsi_op *io) |
| { |
| osmo_timer_del(&io->timer); |
| llist_del(&io->list); |
| imsi_op_stats[io->type].num_released++; |
| talloc_free(io); |
| } |
| |
| static void imsi_op_timer_cb(void *data) |
| { |
| struct imsi_op *io = data; |
| printf("%s: Timer expiration\n", io->imsi); |
| imsi_op_stats[io->type].num_timeout++; |
| imsi_op_release(io); |
| } |
| |
| /* allocate + generate + send Send-Auth-Info */ |
| int req_auth_info(const char *imsi) |
| { |
| struct imsi_op *io = imsi_op_alloc(g_gc, imsi, IMSI_OP_SAI); |
| struct osmo_gsup_message gsup = {0}; |
| struct msgb *msg = msgb_alloc_headroom(1200, 200, __func__); |
| |
| strncpy(gsup.imsi, io->imsi, sizeof(gsup.imsi)); |
| gsup.message_type = OSMO_GSUP_MSGT_SEND_AUTH_INFO_REQUEST; |
| |
| osmo_gsup_encode(msg, &gsup); |
| |
| return gprs_gsup_client_send(g_gc, msg); |
| } |
| |
| /* allocate + generate + send Send-Auth-Info */ |
| int req_loc_upd(const char *imsi) |
| { |
| struct imsi_op *io = imsi_op_alloc(g_gc, imsi, IMSI_OP_LU); |
| struct osmo_gsup_message gsup = {0}; |
| struct msgb *msg = msgb_alloc_headroom(1200, 200, __func__); |
| |
| strncpy(gsup.imsi, io->imsi, sizeof(gsup.imsi)); |
| gsup.message_type = OSMO_GSUP_MSGT_UPDATE_LOCATION_REQUEST; |
| |
| osmo_gsup_encode(msg, &gsup); |
| |
| return gprs_gsup_client_send(g_gc, msg); |
| } |
| |
| int resp_isd(struct imsi_op *io) |
| { |
| struct osmo_gsup_message gsup = {0}; |
| struct msgb *msg = msgb_alloc_headroom(1200, 200, __func__); |
| |
| strncpy(gsup.imsi, io->imsi, sizeof(gsup.imsi)); |
| gsup.message_type = OSMO_GSUP_MSGT_INSERT_DATA_RESULT; |
| |
| osmo_gsup_encode(msg, &gsup); |
| |
| imsi_op_release(io); |
| |
| return gprs_gsup_client_send(g_gc, msg); |
| } |
| |
| /* receive an incoming GSUP message */ |
| static void imsi_op_rx_gsup(struct imsi_op *io, const struct osmo_gsup_message *gsup) |
| { |
| int is_error = 0; |
| |
| if (OSMO_GSUP_IS_MSGT_ERROR(gsup->message_type)) { |
| imsi_op_stats[io->type].num_rx_error++; |
| is_error = 1; |
| } else |
| imsi_op_stats[io->type].num_rx_success++; |
| |
| switch (io->type) { |
| case IMSI_OP_SAI: |
| printf("%s; SAI Response%s\n", io->imsi, is_error ? ": ERROR" : ""); |
| /* now that we have auth tuples, request LU */ |
| req_loc_upd(io->imsi); |
| imsi_op_release(io); |
| break; |
| case IMSI_OP_LU: |
| printf("%s; LU Response%s\n", io->imsi, is_error ? ": ERROR" : ""); |
| imsi_op_release(io); |
| break; |
| case IMSI_OP_ISD: |
| printf("%s; ISD Request%s\n", io->imsi, is_error ? ": ERROR" : ""); |
| resp_isd(io); |
| break; |
| default: |
| printf("%s: Unknown\n", io->imsi); |
| imsi_op_release(io); |
| break; |
| } |
| } |
| |
| static int op_type_by_gsup_msgt(enum osmo_gsup_message_type msg_type) |
| { |
| switch (msg_type) { |
| case OSMO_GSUP_MSGT_SEND_AUTH_INFO_RESULT: |
| case OSMO_GSUP_MSGT_SEND_AUTH_INFO_ERROR: |
| return IMSI_OP_SAI; |
| case OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: |
| case OSMO_GSUP_MSGT_UPDATE_LOCATION_ERROR: |
| return IMSI_OP_LU; |
| case OSMO_GSUP_MSGT_INSERT_DATA_REQUEST: |
| return IMSI_OP_ISD; |
| default: |
| printf("Unknown GSUP msg_type %u\n", msg_type); |
| return -1; |
| } |
| } |
| |
| static int gsupc_read_cb(struct gprs_gsup_client *gsupc, struct msgb *msg) |
| { |
| struct osmo_gsup_message gsup_msg = {0}; |
| struct imsi_op *io; |
| int rc; |
| |
| DEBUGP(DGPRS, "Rx GSUP %s\n", osmo_hexdump(msgb_l2(msg), msgb_l2len(msg))); |
| |
| rc = osmo_gsup_decode(msgb_l2(msg), msgb_l2len(msg), &gsup_msg); |
| if (rc < 0) |
| return rc; |
| |
| if (!gsup_msg.imsi[0]) |
| return -1; |
| |
| rc = op_type_by_gsup_msgt(gsup_msg.message_type); |
| if (rc < 0) |
| return rc; |
| |
| switch (rc) { |
| case IMSI_OP_SAI: |
| case IMSI_OP_LU: |
| io = imsi_op_find(gsup_msg.imsi, rc); |
| if (!io) |
| return -1; |
| break; |
| case IMSI_OP_ISD: |
| /* ISD is an inbound transaction */ |
| io = imsi_op_alloc(g_gc, gsup_msg.imsi, IMSI_OP_ISD); |
| break; |
| } |
| |
| imsi_op_rx_gsup(io, &gsup_msg); |
| msgb_free(msg); |
| |
| return 0; |
| } |
| |
| static void print_report(void) |
| { |
| unsigned int i; |
| |
| for (i = 0; i < ARRAY_SIZE(imsi_op_stats); i++) { |
| struct imsi_op_stats *st = &imsi_op_stats[i]; |
| const char *name = get_value_string(imsi_op_names, i); |
| printf("%s: %u alloc, %u released, %u success, %u error , %u tout\n", |
| name, st->num_alloc, st->num_released, st->num_rx_success, |
| st->num_rx_error, st->num_timeout); |
| } |
| } |
| |
| static void sig_cb(int sig) |
| { |
| switch (sig) { |
| case SIGINT: |
| print_report(); |
| exit(0); |
| break; |
| } |
| } |
| |
| void *tall_bsc_ctx = NULL; |
| |
| /* default categories */ |
| static struct log_info_cat gprs_categories[] = { |
| [DGPRS] = { |
| .name = "DGPRS", |
| .description = "GPRS Packet Service", |
| .enabled = 1, .loglevel = LOGL_INFO, |
| }, |
| }; |
| |
| static const struct log_info gprs_log_info = { |
| .cat = gprs_categories, |
| .num_cat = ARRAY_SIZE(gprs_categories), |
| }; |
| |
| int main(int argc, char **argv) |
| { |
| unsigned long long i; |
| char *server_host = "127.0.0.1"; |
| uint16_t server_port = 2222; |
| |
| osmo_init_logging(&gprs_log_info); |
| |
| g_gc = gprs_gsup_client_create(server_host, server_port, |
| gsupc_read_cb, NULL); |
| |
| |
| signal(SIGINT, sig_cb); |
| |
| for (i = 0; i < 10000; i++) { |
| unsigned long long imsi = 901790000000000 + i; |
| char imsi_buf[17]; |
| snprintf(imsi_buf, sizeof(imsi_buf), "%015llu", imsi); |
| req_auth_info(imsi_buf); |
| osmo_select_main(0); |
| } |
| |
| while (1) { |
| osmo_select_main(0); |
| } |
| |
| print_report(); |
| exit(0); |
| } |