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/* Convert measurement report feed into JSON feed printed to stdout.
* Each measurement report is printed as a separae JSON root entry.
* All measurement reports are separated by a new line.
*/
/* (C) 2015 by Alexander Chemeris <Alexander.Chemeris@fairwaves.co>
* With parts of code adopted from different places in OpenBSC.
*
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <netinet/in.h>
#include <osmocom/core/socket.h>
#include <osmocom/core/msgb.h>
#include <osmocom/core/select.h>
#include <osmocom/gsm/gsm_utils.h>
#include <openbsc/gsm_data.h>
#include <openbsc/gsm_data_shared.h>
#include <openbsc/meas_feed.h>
static void print_meas_rep_uni_json(struct gsm_meas_rep_unidir *mru)
{
printf("\"RXL-FULL\":%d, \"RXL-SUB\":%d, ",
rxlev2dbm(mru->full.rx_lev),
rxlev2dbm(mru->sub.rx_lev));
printf("\"RXQ-FULL\":%d, \"RXQ-SUB\":%d",
mru->full.rx_qual, mru->sub.rx_qual);
}
static void print_meas_rep_json(struct gsm_meas_rep *mr)
{
int i;
printf("\"NR\":%d", mr->nr);
if (mr->flags & MEAS_REP_F_DL_DTX)
printf(", \"DTXd\":true");
printf(", \"UL_MEAS\":{");
print_meas_rep_uni_json(&mr->ul);
printf("}");
printf(", \"BS_POWER\":%d", mr->bs_power);
if (mr->flags & MEAS_REP_F_MS_TO)
printf(", \"MS_TO\":%d", mr->ms_timing_offset);
if (mr->flags & MEAS_REP_F_MS_L1) {
printf(", \"L1_MS_PWR\":%d", mr->ms_l1.pwr);
printf(", \"L1_FPC\":%s",
mr->flags & MEAS_REP_F_FPC ? "true" : "false");
printf(", \"L1_TA\":%u", mr->ms_l1.ta);
}
if (mr->flags & MEAS_REP_F_UL_DTX)
printf(", \"DTXu\":true");
if (mr->flags & MEAS_REP_F_BA1)
printf(", \"BA1\":true");
if (mr->flags & MEAS_REP_F_DL_VALID) {
printf(", \"DL_MEAS\":{");
print_meas_rep_uni_json(&mr->dl);
printf("}");
}
if (mr->num_cell == 7)
return;
printf(", \"NUM_NEIGH\":%u, \"NEIGH\":[", mr->num_cell);
for (i = 0; i < mr->num_cell; i++) {
struct gsm_meas_rep_cell *mrc = &mr->cell[i];
if (i!=0) printf(", ");
printf("\"IDX\":%u, \"ARFCN\":%u, \"BSIC\":%u, \"POWER\":%d",
mrc->neigh_idx, mrc->arfcn, mrc->bsic, rxlev2dbm(mrc->rxlev));
}
printf("]");
}
static void print_chan_info_json(struct meas_feed_meas *mfm)
{
printf("\"lchan_type\":\"%s\", \"pchan_type\":\"%s\", "
"\"bts_nr\":%d, \"trx_nr\":%d, \"ts_nr\":%d, \"ss_nr\":%d",
gsm_lchant_name(mfm->lchan_type), gsm_pchan_name(mfm->pchan_type),
mfm->bts_nr, mfm->trx_nr, mfm->ts_nr, mfm->ss_nr);
}
static void print_meas_feed_json(struct meas_feed_meas *mfm)
{
time_t now = time(NULL);
printf("{");
printf("\"time\":%ld, \"imsi\":\"%s\", \"name\":\"%s\", \"scenario\":\"%s\", ",
now, mfm->imsi, mfm->name, mfm->scenario);
switch (mfm->hdr.version) {
case 1:
printf("\"chan_info\":{");
print_chan_info_json(mfm);
printf("}, ");
/* no break, fall to version 0 */
case 0:
printf("\"meas_rep\":{");
print_meas_rep_json(&mfm->mr);
printf("}");
break;
}
printf("}\n");
}
static int handle_meas(struct msgb *msg)
{
struct meas_feed_meas *mfm = (struct meas_feed_meas *) msgb_data(msg);
print_meas_feed_json(mfm);
return 0;
}
static int handle_msg(struct msgb *msg)
{
struct meas_feed_hdr *mfh = (struct meas_feed_hdr *) msgb_data(msg);
if (mfh->version != MEAS_FEED_VERSION)
return -EINVAL;
switch (mfh->msg_type) {
case MEAS_FEED_MEAS:
handle_meas(msg);
break;
default:
break;
}
}
static int udp_fd_cb(struct osmo_fd *ofd, unsigned int what)
{
int rc;
if (what & BSC_FD_READ) {
struct msgb *msg = msgb_alloc(1024, "UDP Rx");
rc = read(ofd->fd, msgb_data(msg), msgb_tailroom(msg));
if (rc < 0)
return rc;
msgb_put(msg, rc);
handle_msg(msg);
msgb_free(msg);
}
return 0;
}
int main(int argc, char **argv)
{
int rc;
struct osmo_fd udp_ofd;
udp_ofd.cb = udp_fd_cb;
rc = osmo_sock_init_ofd(&udp_ofd, AF_INET, SOCK_DGRAM, IPPROTO_UDP, NULL, 8888, OSMO_SOCK_F_BIND);
if (rc < 0)
exit(1);
while (1) {
osmo_select_main(0);
};
exit(0);
}
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