139 lines
2.9 KiB
C
139 lines
2.9 KiB
C
/* read PCAP file with meas_feed data and write it to sqlite3 database */
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/* (C) 2012 by Harald Welte <laforge@gnumonks.org>
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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 <netinet/in.h>
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#include <netinet/ip.h>
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#include <netinet/udp.h>
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#include <osmocom/core/socket.h>
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#include <osmocom/core/utils.h>
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#include <osmocom/core/select.h>
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#include <osmocom/core/talloc.h>
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#include <osmocom/gsm/gsm_utils.h>
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#include <osmocom/msc/meas_feed.h>
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#include <pcap/pcap.h>
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#include "meas_db.h"
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static struct meas_db_state *db;
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static void handle_mfm(const struct pcap_pkthdr *h,
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const struct meas_feed_meas *mfm)
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{
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const char *scenario;
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if (strlen(mfm->scenario))
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scenario = mfm->scenario;
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else
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scenario = NULL;
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meas_db_insert(db, mfm->imsi, mfm->name, h->ts.tv_sec,
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scenario, &mfm->mr);
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}
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static void pcap_cb(u_char *user, const struct pcap_pkthdr *h,
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const u_char *bytes)
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{
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const char *cur = bytes;
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const struct iphdr *ip;
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const struct udphdr *udp;
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const struct meas_feed_meas *mfm;
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uint16_t udplen;
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if (h->caplen < 14+20+8)
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return;
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/* Check if there is IPv4 in the Ethernet */
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if (cur[12] != 0x08 || cur[13] != 0x00)
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return;
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cur += 14; /* ethernet header */
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ip = (struct iphdr *) cur;
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if (ip->version != 4)
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return;
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cur += ip->ihl * 4;
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if (ip->protocol != IPPROTO_UDP)
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return;
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udp = (struct udphdr *) cur;
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if (udp->dest != htons(8888))
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return;
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udplen = ntohs(udp->len);
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if (udplen != sizeof(*udp) + sizeof(*mfm))
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return;
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cur += sizeof(*udp);
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mfm = (const struct meas_feed_meas *) cur;
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handle_mfm(h, mfm);
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}
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int main(int argc, char **argv)
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{
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char errbuf[PCAP_ERRBUF_SIZE+1];
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char *pcap_fname, *db_fname;
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pcap_t *pc;
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int rc;
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if (argc < 3) {
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fprintf(stderr, "You need to specify PCAP and database file\n");
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exit(2);
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}
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pcap_fname = argv[1];
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db_fname = argv[2];
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pc = pcap_open_offline(pcap_fname, errbuf);
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if (!pc) {
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fprintf(stderr, "Cannot open %s: %s\n", pcap_fname, errbuf);
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exit(1);
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}
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db = meas_db_open(NULL, db_fname);
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if (!db)
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exit(0);
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rc = meas_db_begin(db);
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if (rc < 0) {
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fprintf(stderr, "Error during BEGIN\n");
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exit(1);
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}
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pcap_loop(pc, 0 , pcap_cb, NULL);
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meas_db_commit(db);
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exit(0);
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}
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