204 lines
4.9 KiB
C
204 lines
4.9 KiB
C
/* Convert measurement report feed into JSON feed printed to stdout.
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* Each measurement report is printed as a separae JSON root entry.
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* All measurement reports are separated by a new line.
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*/
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/* (C) 2015 by Alexander Chemeris <Alexander.Chemeris@fairwaves.co>
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* With parts of code adopted from different places in OpenBSC.
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*
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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 <string.h>
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#include <errno.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <time.h>
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#include <netinet/in.h>
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#include <osmocom/core/socket.h>
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#include <osmocom/core/msgb.h>
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#include <osmocom/core/select.h>
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#include <osmocom/core/application.h>
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#include <osmocom/gsm/gsm_utils.h>
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#include <osmocom/bsc/gsm_data.h>
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#include <osmocom/bsc/meas_feed.h>
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static void print_meas_rep_uni_json(struct gsm_meas_rep_unidir *mru)
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{
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printf("\"RXL-FULL\":%d, \"RXL-SUB\":%d, ",
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rxlev2dbm(mru->full.rx_lev),
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rxlev2dbm(mru->sub.rx_lev));
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printf("\"RXQ-FULL\":%d, \"RXQ-SUB\":%d",
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mru->full.rx_qual, mru->sub.rx_qual);
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}
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static void print_meas_rep_json(struct gsm_meas_rep *mr)
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{
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int i;
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printf("\"NR\":%d", mr->nr);
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if (mr->flags & MEAS_REP_F_DL_DTX)
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printf(", \"DTXd\":true");
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printf(", \"UL_MEAS\":{");
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print_meas_rep_uni_json(&mr->ul);
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printf("}");
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printf(", \"BS_POWER\":%d", mr->bs_power_db / 2);
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if (mr->flags & MEAS_REP_F_MS_TO)
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printf(", \"MS_TO\":%d", mr->ms_timing_offset);
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if (mr->flags & MEAS_REP_F_MS_L1) {
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printf(", \"L1_MS_PWR\":%d", mr->ms_l1.pwr);
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printf(", \"L1_FPC\":%s",
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mr->flags & MEAS_REP_F_FPC ? "true" : "false");
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printf(", \"L1_TA\":%u", mr->ms_l1.ta);
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}
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if (mr->flags & MEAS_REP_F_UL_DTX)
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printf(", \"DTXu\":true");
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if (mr->flags & MEAS_REP_F_BA1)
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printf(", \"BA1\":true");
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if (mr->flags & MEAS_REP_F_DL_VALID) {
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printf(", \"DL_MEAS\":{");
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print_meas_rep_uni_json(&mr->dl);
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printf("}");
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}
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if (mr->num_cell == 7)
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return;
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printf(", \"NUM_NEIGH\":%u, \"NEIGH\":[", mr->num_cell);
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for (i = 0; i < mr->num_cell; i++) {
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struct gsm_meas_rep_cell *mrc = &mr->cell[i];
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if (i!=0) printf(", ");
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printf("{\"IDX\":%u, \"ARFCN\":%u, \"BSIC\":%u, \"POWER\":%d}",
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mrc->neigh_idx, mrc->arfcn, mrc->bsic, rxlev2dbm(mrc->rxlev));
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}
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printf("]");
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}
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static void print_chan_info_json(struct meas_feed_meas *mfm)
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{
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printf("\"lchan_type\":\"%s\", \"pchan_type\":\"%s\", "
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"\"bts_nr\":%d, \"trx_nr\":%d, \"ts_nr\":%d, \"ss_nr\":%d",
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gsm_chan_t_name(mfm->lchan_type), gsm_pchan_name(mfm->pchan_type),
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mfm->bts_nr, mfm->trx_nr, mfm->ts_nr, mfm->ss_nr);
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}
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static void print_meas_feed_json(struct meas_feed_meas *mfm)
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{
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time_t now = time(NULL);
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printf("{");
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printf("\"time\":%ld, \"imsi\":\"%s\", \"name\":\"%s\", \"scenario\":\"%s\", ",
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now, mfm->imsi, mfm->name, mfm->scenario);
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switch (mfm->hdr.version) {
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case 1:
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printf("\"chan_info\":{");
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print_chan_info_json(mfm);
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printf("}, ");
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/* no break, fall to version 0 */
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case 0:
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printf("\"meas_rep\":{");
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print_meas_rep_json(&mfm->mr);
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printf("}");
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break;
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}
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printf("}\n");
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}
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static int handle_meas(struct msgb *msg)
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{
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struct meas_feed_meas *mfm = (struct meas_feed_meas *) msgb_data(msg);
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print_meas_feed_json(mfm);
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return 0;
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}
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static int handle_msg(struct msgb *msg)
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{
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struct meas_feed_hdr *mfh = (struct meas_feed_hdr *) msgb_data(msg);
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if (mfh->version != MEAS_FEED_VERSION)
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return -EINVAL;
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switch (mfh->msg_type) {
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case MEAS_FEED_MEAS:
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handle_meas(msg);
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break;
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default:
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break;
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}
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return 0;
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}
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static int udp_fd_cb(struct osmo_fd *ofd, unsigned int what)
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{
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int rc;
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if (what & OSMO_FD_READ) {
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struct msgb *msg = msgb_alloc(1024, "UDP Rx");
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rc = read(ofd->fd, msgb_data(msg), msgb_tailroom(msg));
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if (rc < 0)
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return rc;
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msgb_put(msg, rc);
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handle_msg(msg);
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msgb_free(msg);
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}
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return 0;
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}
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/* default categories */
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static struct log_info_cat default_categories[] = {
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};
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static const struct log_info meas_json_log_info = {
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.cat = default_categories,
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.num_cat = ARRAY_SIZE(default_categories),
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};
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int main(int argc, char **argv)
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{
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void *tall_ctx = talloc_named_const(NULL, 0, "meas_json");
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osmo_init_logging2(tall_ctx, &meas_json_log_info);
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int rc;
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struct osmo_fd udp_ofd;
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udp_ofd.cb = udp_fd_cb;
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rc = osmo_sock_init_ofd(&udp_ofd, AF_INET, SOCK_DGRAM, IPPROTO_UDP, NULL, 8888, OSMO_SOCK_F_BIND);
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if (rc < 0)
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exit(1);
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while (1) {
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osmo_select_main(0);
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};
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exit(0);
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}
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