681 lines
17 KiB
C
681 lines
17 KiB
C
/* (C) 2011 by Daniel Willmann <daniel@totalueberwachung.de>
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* (C) 2011 by Holger Hans Peter Freyther
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* (C) 2011 by On-Waves
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <osmocom/ctrl/control_cmd.h>
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#include <openbsc/debug.h>
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#include <openbsc/gsm_data.h>
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#include <openbsc/osmo_bsc.h>
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#include <openbsc/osmo_bsc_rf.h>
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#include <openbsc/osmo_msc_data.h>
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#include <openbsc/signal.h>
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#include <openbsc/gsm_04_80.h>
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#include <osmocom/core/linuxlist.h>
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#include <osmocom/core/signal.h>
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#include <osmocom/core/talloc.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include <unistd.h>
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void osmo_bsc_send_trap(struct ctrl_cmd *cmd, struct bsc_msc_connection *msc_con)
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{
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struct ctrl_cmd *trap;
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struct ctrl_handle *ctrl;
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struct osmo_msc_data *msc_data;
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msc_data = (struct osmo_msc_data *) msc_con->write_queue.bfd.data;
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ctrl = msc_data->network->ctrl;
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trap = ctrl_cmd_trap(cmd);
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if (!trap) {
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LOGP(DCTRL, LOGL_ERROR, "Failed to create trap.\n");
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return;
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}
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ctrl_cmd_send_to_all(ctrl, trap);
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ctrl_cmd_send(&msc_con->write_queue, trap);
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talloc_free(trap);
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}
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CTRL_CMD_DEFINE_RO(msc_connection_status, "msc_connection_status");
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static int msc_connection_status = 0;
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static int get_msc_connection_status(struct ctrl_cmd *cmd, void *data)
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{
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if (msc_connection_status)
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cmd->reply = "connected";
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else
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cmd->reply = "disconnected";
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return CTRL_CMD_REPLY;
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}
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static int msc_connection_status_trap_cb(unsigned int subsys, unsigned int signal, void *handler_data, void *signal_data)
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{
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struct ctrl_cmd *cmd;
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struct gsm_network *gsmnet = (struct gsm_network *)handler_data;
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if (signal == S_MSC_LOST && msc_connection_status == 1) {
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LOGP(DCTRL, LOGL_DEBUG, "MSC connection lost, sending TRAP.\n");
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msc_connection_status = 0;
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} else if (signal == S_MSC_CONNECTED && msc_connection_status == 0) {
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LOGP(DCTRL, LOGL_DEBUG, "MSC connection (re)established, sending TRAP.\n");
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msc_connection_status = 1;
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} else {
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return 0;
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}
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cmd = ctrl_cmd_create(tall_bsc_ctx, CTRL_TYPE_TRAP);
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if (!cmd) {
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LOGP(DCTRL, LOGL_ERROR, "Trap creation failed.\n");
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return 0;
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}
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cmd->id = "0";
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cmd->variable = "msc_connection_status";
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get_msc_connection_status(cmd, NULL);
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ctrl_cmd_send_to_all(gsmnet->ctrl, cmd);
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talloc_free(cmd);
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return 0;
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}
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CTRL_CMD_DEFINE_RO(bts_connection_status, "bts_connection_status");
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static int bts_connection_status = 0;
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static int get_bts_connection_status(struct ctrl_cmd *cmd, void *data)
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{
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if (bts_connection_status)
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cmd->reply = "connected";
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else
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cmd->reply = "disconnected";
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return CTRL_CMD_REPLY;
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}
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static int bts_connection_status_trap_cb(unsigned int subsys, unsigned int signal, void *handler_data, void *signal_data)
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{
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struct ctrl_cmd *cmd;
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struct gsm_network *gsmnet = (struct gsm_network *)handler_data;
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struct gsm_bts *bts;
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int bts_current_status;
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if (signal != S_L_INP_TEI_DN && signal != S_L_INP_TEI_UP) {
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return 0;
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}
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bts_current_status = 0;
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/* Check if OML on at least one BTS is up */
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llist_for_each_entry(bts, &gsmnet->bts_list, list) {
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if (bts->oml_link) {
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bts_current_status = 1;
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break;
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}
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}
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if (bts_connection_status == 0 && bts_current_status == 1) {
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LOGP(DCTRL, LOGL_DEBUG, "BTS connection (re)established, sending TRAP.\n");
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} else if (bts_connection_status == 1 && bts_current_status == 0) {
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LOGP(DCTRL, LOGL_DEBUG, "No more BTS connected, sending TRAP.\n");
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} else {
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return 0;
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}
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cmd = ctrl_cmd_create(tall_bsc_ctx, CTRL_TYPE_TRAP);
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if (!cmd) {
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LOGP(DCTRL, LOGL_ERROR, "Trap creation failed.\n");
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return 0;
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}
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bts_connection_status = bts_current_status;
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cmd->id = "0";
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cmd->variable = "bts_connection_status";
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get_bts_connection_status(cmd, NULL);
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ctrl_cmd_send_to_all(gsmnet->ctrl, cmd);
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talloc_free(cmd);
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return 0;
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}
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static int get_bts_loc(struct ctrl_cmd *cmd, void *data);
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static void generate_location_state_trap(struct gsm_bts *bts, struct bsc_msc_connection *msc_con)
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{
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struct ctrl_cmd *cmd;
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const char *oper, *admin, *policy;
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cmd = ctrl_cmd_create(msc_con, CTRL_TYPE_TRAP);
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if (!cmd) {
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LOGP(DCTRL, LOGL_ERROR, "Failed to create TRAP command.\n");
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return;
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}
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cmd->id = "0";
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cmd->variable = talloc_asprintf(cmd, "bts.%i.location-state", bts->nr);
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/* Prepare the location reply */
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cmd->node = bts;
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get_bts_loc(cmd, NULL);
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oper = osmo_bsc_rf_get_opstate_name(osmo_bsc_rf_get_opstate_by_bts(bts));
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admin = osmo_bsc_rf_get_adminstate_name(osmo_bsc_rf_get_adminstate_by_bts(bts));
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policy = osmo_bsc_rf_get_policy_name(osmo_bsc_rf_get_policy_by_bts(bts));
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cmd->reply = talloc_asprintf_append(cmd->reply,
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",%s,%s,%s,%d,%d",
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oper, admin, policy,
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bts->network->country_code,
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bts->network->network_code);
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osmo_bsc_send_trap(cmd, msc_con);
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talloc_free(cmd);
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}
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void bsc_gen_location_state_trap(struct gsm_bts *bts)
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{
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struct osmo_msc_data *msc;
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llist_for_each_entry(msc, &bts->network->bsc_data->mscs, entry)
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generate_location_state_trap(bts, msc->msc_con);
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}
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static int location_equal(struct bts_location *a, struct bts_location *b)
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{
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return ((a->tstamp == b->tstamp) && (a->valid == b->valid) && (a->lat == b->lat) &&
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(a->lon == b->lon) && (a->height == b->height));
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}
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static void cleanup_locations(struct llist_head *locations)
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{
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struct bts_location *myloc, *tmp;
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int invalpos = 0, i = 0;
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LOGP(DCTRL, LOGL_DEBUG, "Checking position list.\n");
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llist_for_each_entry_safe(myloc, tmp, locations, list) {
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i++;
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if (i > 3) {
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LOGP(DCTRL, LOGL_DEBUG, "Deleting old position.\n");
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llist_del(&myloc->list);
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talloc_free(myloc);
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} else if (myloc->valid == BTS_LOC_FIX_INVALID) {
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/* Only capture the newest of subsequent invalid positions */
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invalpos++;
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if (invalpos > 1) {
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LOGP(DCTRL, LOGL_DEBUG, "Deleting subsequent invalid position.\n");
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invalpos--;
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i--;
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llist_del(&myloc->list);
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talloc_free(myloc);
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}
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} else {
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invalpos = 0;
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}
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}
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LOGP(DCTRL, LOGL_DEBUG, "Found %i positions.\n", i);
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}
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CTRL_CMD_DEFINE(bts_loc, "location");
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static int get_bts_loc(struct ctrl_cmd *cmd, void *data)
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{
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struct bts_location *curloc;
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struct gsm_bts *bts = (struct gsm_bts *) cmd->node;
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if (!bts) {
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cmd->reply = "bts not found.";
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return CTRL_CMD_ERROR;
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}
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if (llist_empty(&bts->loc_list)) {
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cmd->reply = talloc_asprintf(cmd, "0,invalid,0,0,0");
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return CTRL_CMD_REPLY;
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} else {
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curloc = llist_entry(bts->loc_list.next, struct bts_location, list);
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}
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cmd->reply = talloc_asprintf(cmd, "%lu,%s,%f,%f,%f", curloc->tstamp,
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get_value_string(bts_loc_fix_names, curloc->valid), curloc->lat, curloc->lon, curloc->height);
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if (!cmd->reply) {
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cmd->reply = "OOM";
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return CTRL_CMD_ERROR;
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}
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return CTRL_CMD_REPLY;
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}
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static int set_bts_loc(struct ctrl_cmd *cmd, void *data)
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{
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char *saveptr, *lat, *lon, *height, *tstamp, *valid, *tmp;
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struct bts_location *curloc, *lastloc;
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int ret;
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struct gsm_bts *bts = (struct gsm_bts *) cmd->node;
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if (!bts) {
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cmd->reply = "bts not found.";
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return CTRL_CMD_ERROR;
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}
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tmp = talloc_strdup(cmd, cmd->value);
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if (!tmp)
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goto oom;
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curloc = talloc_zero(tall_bsc_ctx, struct bts_location);
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if (!curloc) {
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talloc_free(tmp);
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goto oom;
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}
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INIT_LLIST_HEAD(&curloc->list);
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tstamp = strtok_r(tmp, ",", &saveptr);
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valid = strtok_r(NULL, ",", &saveptr);
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lat = strtok_r(NULL, ",", &saveptr);
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lon = strtok_r(NULL, ",", &saveptr);
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height = strtok_r(NULL, "\0", &saveptr);
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curloc->tstamp = atol(tstamp);
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curloc->valid = get_string_value(bts_loc_fix_names, valid);
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curloc->lat = atof(lat);
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curloc->lon = atof(lon);
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curloc->height = atof(height);
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talloc_free(tmp);
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lastloc = llist_entry(bts->loc_list.next, struct bts_location, list);
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/* Add location to the end of the list */
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llist_add(&curloc->list, &bts->loc_list);
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ret = get_bts_loc(cmd, data);
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if (!location_equal(curloc, lastloc))
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bsc_gen_location_state_trap(bts);
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cleanup_locations(&bts->loc_list);
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return ret;
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oom:
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cmd->reply = "OOM";
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return CTRL_CMD_ERROR;
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}
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static int verify_bts_loc(struct ctrl_cmd *cmd, const char *value, void *data)
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{
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char *saveptr, *latstr, *lonstr, *heightstr, *tstampstr, *validstr, *tmp;
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time_t tstamp;
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int valid;
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double lat, lon, height __attribute__((unused));
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tmp = talloc_strdup(cmd, value);
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if (!tmp)
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return 1;
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tstampstr = strtok_r(tmp, ",", &saveptr);
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validstr = strtok_r(NULL, ",", &saveptr);
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latstr = strtok_r(NULL, ",", &saveptr);
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lonstr = strtok_r(NULL, ",", &saveptr);
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heightstr = strtok_r(NULL, "\0", &saveptr);
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if ((tstampstr == NULL) || (validstr == NULL) || (latstr == NULL) ||
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(lonstr == NULL) || (heightstr == NULL))
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goto err;
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tstamp = atol(tstampstr);
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valid = get_string_value(bts_loc_fix_names, validstr);
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lat = atof(latstr);
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lon = atof(lonstr);
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height = atof(heightstr);
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talloc_free(tmp);
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tmp = NULL;
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if (((tstamp == 0) && (valid != BTS_LOC_FIX_INVALID)) || (lat < -90) || (lat > 90) ||
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(lon < -180) || (lon > 180) || (valid < 0)) {
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goto err;
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}
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return 0;
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err:
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talloc_free(tmp);
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cmd->reply = talloc_strdup(cmd, "The format is <unixtime>,(invalid|fix2d|fix3d),<lat>,<lon>,<height>");
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return 1;
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}
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CTRL_CMD_DEFINE(net_timezone, "timezone");
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static int get_net_timezone(struct ctrl_cmd *cmd, void *data)
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{
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struct gsm_network *net = (struct gsm_network*)cmd->node;
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struct gsm_tz *tz = &net->tz;
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if (tz->override)
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cmd->reply = talloc_asprintf(cmd, "%d,%d,%d",
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tz->hr, tz->mn, tz->dst);
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else
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cmd->reply = talloc_asprintf(cmd, "off");
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if (!cmd->reply) {
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cmd->reply = "OOM";
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return CTRL_CMD_ERROR;
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}
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return CTRL_CMD_REPLY;
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}
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static int set_net_timezone(struct ctrl_cmd *cmd, void *data)
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{
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char *saveptr, *hourstr, *minstr, *dststr, *tmp = 0;
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int override;
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struct gsm_network *net = (struct gsm_network*)cmd->node;
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tmp = talloc_strdup(cmd, cmd->value);
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if (!tmp)
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goto oom;
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hourstr = strtok_r(tmp, ",", &saveptr);
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minstr = strtok_r(NULL, ",", &saveptr);
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dststr = strtok_r(NULL, ",", &saveptr);
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override = 0;
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if (hourstr != NULL)
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override = strcasecmp(hourstr, "off") != 0;
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struct gsm_tz *tz = &net->tz;
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tz->override = override;
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if (override) {
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tz->hr = hourstr ? atol(hourstr) : 0;
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tz->mn = minstr ? atol(minstr) : 0;
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tz->dst = dststr ? atol(dststr) : 0;
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}
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talloc_free(tmp);
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tmp = NULL;
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return get_net_timezone(cmd, data);
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oom:
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cmd->reply = "OOM";
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return CTRL_CMD_ERROR;
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}
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static int verify_net_timezone(struct ctrl_cmd *cmd, const char *value, void *data)
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{
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char *saveptr, *hourstr, *minstr, *dststr, *tmp;
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int override, tz_hours, tz_mins, tz_dst;
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tmp = talloc_strdup(cmd, value);
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if (!tmp)
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return 1;
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hourstr = strtok_r(tmp, ",", &saveptr);
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minstr = strtok_r(NULL, ",", &saveptr);
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dststr = strtok_r(NULL, ",", &saveptr);
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if (hourstr == NULL)
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goto err;
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override = strcasecmp(hourstr, "off") != 0;
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if (!override) {
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talloc_free(tmp);
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return 0;
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}
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if (minstr == NULL || dststr == NULL)
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goto err;
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tz_hours = atol(hourstr);
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tz_mins = atol(minstr);
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tz_dst = atol(dststr);
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talloc_free(tmp);
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tmp = NULL;
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if ((tz_hours < -19) || (tz_hours > 19) ||
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(tz_mins < 0) || (tz_mins >= 60) || (tz_mins % 15 != 0) ||
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(tz_dst < 0) || (tz_dst > 2))
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goto err;
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return 0;
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err:
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talloc_free(tmp);
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cmd->reply = talloc_strdup(cmd, "The format is <hours>,<mins>,<dst> or 'off' where -19 <= hours <= 19, mins in {0, 15, 30, 45}, and 0 <= dst <= 2");
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return 1;
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}
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CTRL_CMD_DEFINE(net_notification, "notification");
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static int get_net_notification(struct ctrl_cmd *cmd, void *data)
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{
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cmd->reply = "There is nothing to read";
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return CTRL_CMD_ERROR;
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}
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static int set_net_notification(struct ctrl_cmd *cmd, void *data)
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{
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struct ctrl_cmd *trap;
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struct gsm_network *net;
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net = cmd->node;
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trap = ctrl_cmd_create(tall_bsc_ctx, CTRL_TYPE_TRAP);
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if (!trap) {
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LOGP(DCTRL, LOGL_ERROR, "Trap creation failed\n");
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goto handled;
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}
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trap->id = "0";
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trap->variable = "notification";
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trap->reply = talloc_strdup(trap, cmd->value);
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/*
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* This should only be sent to local systems. In the future
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* we might even ask for systems to register to receive
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* the notifications.
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*/
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ctrl_cmd_send_to_all(net->ctrl, trap);
|
|
talloc_free(trap);
|
|
|
|
handled:
|
|
return CTRL_CMD_HANDLED;
|
|
}
|
|
|
|
static int verify_net_notification(struct ctrl_cmd *cmd, const char *value, void *data)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
CTRL_CMD_DEFINE(net_inform_msc, "inform-msc-v1");
|
|
static int get_net_inform_msc(struct ctrl_cmd *cmd, void *data)
|
|
{
|
|
cmd->reply = "There is nothing to read";
|
|
return CTRL_CMD_ERROR;
|
|
}
|
|
|
|
static int set_net_inform_msc(struct ctrl_cmd *cmd, void *data)
|
|
{
|
|
struct gsm_network *net;
|
|
struct osmo_msc_data *msc;
|
|
|
|
net = cmd->node;
|
|
llist_for_each_entry(msc, &net->bsc_data->mscs, entry) {
|
|
struct ctrl_cmd *trap;
|
|
|
|
trap = ctrl_cmd_create(tall_bsc_ctx, CTRL_TYPE_TRAP);
|
|
if (!trap) {
|
|
LOGP(DCTRL, LOGL_ERROR, "Trap creation failed\n");
|
|
continue;
|
|
}
|
|
|
|
trap->id = "0";
|
|
trap->variable = "inform-msc-v1";
|
|
trap->reply = talloc_strdup(trap, cmd->value);
|
|
ctrl_cmd_send(&msc->msc_con->write_queue, trap);
|
|
talloc_free(trap);
|
|
}
|
|
|
|
|
|
return CTRL_CMD_HANDLED;
|
|
}
|
|
|
|
static int verify_net_inform_msc(struct ctrl_cmd *cmd, const char *value, void *data)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
CTRL_CMD_DEFINE(net_ussd_notify, "ussd-notify-v1");
|
|
static int get_net_ussd_notify(struct ctrl_cmd *cmd, void *data)
|
|
{
|
|
cmd->reply = "There is nothing to read";
|
|
return CTRL_CMD_ERROR;
|
|
}
|
|
|
|
static int set_net_ussd_notify(struct ctrl_cmd *cmd, void *data)
|
|
{
|
|
struct gsm_subscriber_connection *conn;
|
|
struct gsm_network *net;
|
|
char *saveptr = NULL;
|
|
char *cic_str, *alert_str, *text_str;
|
|
int cic, alert;
|
|
|
|
/* Verify has done the test for us */
|
|
cic_str = strtok_r(cmd->value, ",", &saveptr);
|
|
alert_str = strtok_r(NULL, ",", &saveptr);
|
|
text_str = strtok_r(NULL, ",", &saveptr);
|
|
|
|
if (!cic_str || !alert_str || !text_str) {
|
|
cmd->reply = "Programming issue. How did this pass verify?";
|
|
return CTRL_CMD_ERROR;
|
|
}
|
|
|
|
cmd->reply = "No connection found";
|
|
|
|
cic = atoi(cic_str);
|
|
alert = atoi(alert_str);
|
|
|
|
net = cmd->node;
|
|
llist_for_each_entry(conn, &net->subscr_conns, entry) {
|
|
if (!conn->sccp_con)
|
|
continue;
|
|
|
|
if (conn->sccp_con->cic != cic)
|
|
continue;
|
|
|
|
/*
|
|
* This is a hack. My E71 does not like to immediately
|
|
* receive a release complete on a TCH. So schedule a
|
|
* release complete to clear any previous attempt. The
|
|
* right thing would be to track invokeId and only send
|
|
* the release complete when we get a returnResultLast
|
|
* for this invoke id.
|
|
*/
|
|
bsc_send_ussd_release_complete(conn);
|
|
bsc_send_ussd_notify(conn, alert, text_str);
|
|
cmd->reply = "Found a connection";
|
|
break;
|
|
}
|
|
|
|
return CTRL_CMD_REPLY;
|
|
}
|
|
|
|
static int verify_net_ussd_notify(struct ctrl_cmd *cmd, const char *value, void *data)
|
|
{
|
|
char *saveptr = NULL;
|
|
char *inp, *cic, *alert, *text;
|
|
|
|
OSMO_ASSERT(cmd);
|
|
inp = talloc_strdup(cmd, value);
|
|
|
|
cic = strtok_r(inp, ",", &saveptr);
|
|
alert = strtok_r(NULL, ",", &saveptr);
|
|
text = strtok_r(NULL, ",", &saveptr);
|
|
|
|
talloc_free(inp);
|
|
if (!cic || !alert || !text)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
static int msc_signal_handler(unsigned int subsys, unsigned int signal,
|
|
void *handler_data, void *signal_data)
|
|
{
|
|
struct msc_signal_data *msc;
|
|
struct gsm_network *net;
|
|
struct gsm_bts *bts;
|
|
|
|
if (subsys != SS_MSC)
|
|
return 0;
|
|
if (signal != S_MSC_AUTHENTICATED)
|
|
return 0;
|
|
|
|
msc = signal_data;
|
|
|
|
net = msc->data->network;
|
|
llist_for_each_entry(bts, &net->bts_list, list)
|
|
generate_location_state_trap(bts, msc->data->msc_con);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int bsc_ctrl_cmds_install(struct gsm_network *net)
|
|
{
|
|
int rc;
|
|
|
|
rc = bsc_base_ctrl_cmds_install();
|
|
if (rc)
|
|
goto end;
|
|
rc = ctrl_cmd_install(CTRL_NODE_BTS, &cmd_bts_loc);
|
|
if (rc)
|
|
goto end;
|
|
rc = ctrl_cmd_install(CTRL_NODE_ROOT, &cmd_net_timezone);
|
|
if (rc)
|
|
goto end;
|
|
rc = ctrl_cmd_install(CTRL_NODE_ROOT, &cmd_msc_connection_status);
|
|
if (rc)
|
|
goto end;
|
|
rc = osmo_signal_register_handler(SS_MSC, &msc_connection_status_trap_cb, net);
|
|
if (rc)
|
|
goto end;
|
|
rc = osmo_signal_register_handler(SS_MSC, msc_signal_handler, NULL);
|
|
if (rc)
|
|
goto end;
|
|
rc = ctrl_cmd_install(CTRL_NODE_ROOT, &cmd_bts_connection_status);
|
|
if (rc)
|
|
goto end;
|
|
rc = ctrl_cmd_install(CTRL_NODE_ROOT, &cmd_net_notification);
|
|
if (rc)
|
|
goto end;
|
|
rc = ctrl_cmd_install(CTRL_NODE_ROOT, &cmd_net_inform_msc);
|
|
if (rc)
|
|
goto end;
|
|
rc = ctrl_cmd_install(CTRL_NODE_ROOT, &cmd_net_ussd_notify);
|
|
if (rc)
|
|
goto end;
|
|
rc = osmo_signal_register_handler(SS_L_INPUT, &bts_connection_status_trap_cb, net);
|
|
|
|
end:
|
|
return rc;
|
|
}
|