107 lines
2.6 KiB
C
107 lines
2.6 KiB
C
/*
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* (C) 2012 by Holger Hans Peter Freyther
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* (C) 2012 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 <isup_filter.h>
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#include <isup_types.h>
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#include <mgcp_callagent.h>
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#include <ss7_application.h>
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#include <bsc_data.h>
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#include <cellmgr_debug.h>
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#include <osmocom/core/msgb.h>
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#include <stdio.h>
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#include <string.h>
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static void send_reset(struct ss7_application *app, int endp, int range)
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{
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char buf[1024];
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snprintf(buf, sizeof(buf) - 1,
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"RSIP 2 %s/%d@127.0.0.1 MGCP 1.0\r\n"
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"R: %d\n", app->trunk_name, endp, range);
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buf[sizeof(buf) - 1] = '\0';
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mgcp_forward(&app->bsc->mgcp_agent,
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(const uint8_t *) buf, strlen(buf));
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}
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static void reset_cic(struct ss7_application *app, int cic)
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{
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return send_reset(app, cic, 1);
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}
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static void reset_cics(struct ss7_application *app, int cic, int range)
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{
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return send_reset(app, cic, range);
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}
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/**
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* Discover resets and forward them to the local MGCP gateway
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*/
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int isup_scan_for_reset(struct ss7_application *app, struct msgb *msg)
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{
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struct isup_msg_hdr *hdr;
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int range;
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uint16_t cic;
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/* too small for an isup message? */
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if (msgb_l3len(msg) < sizeof(*hdr)) {
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LOGP(DISUP, LOGL_ERROR, "Message too small for the header\n");
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return -1;
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}
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/* no trunk name, don't bother forwarding */
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if (!app->trunk_name) {
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LOGP(DISUP, LOGL_DEBUG,
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"No trunk name defined for: %s\n", app->name);
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return 0;
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}
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hdr = (struct isup_msg_hdr *) msg->l3h;
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cic = isup_cic_to_local(hdr);
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switch (hdr->msg_type) {
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case ISUP_MSG_GRS:
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range = isup_parse_status(&hdr->data[0],
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msgb_l3len(msg) - sizeof(*hdr));
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if (range <= 0) {
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LOGP(DISUP, LOGL_ERROR,
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"Failed to parse range on app %s\n", app->name);
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return -1;
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}
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LOGP(DISUP, LOGL_DEBUG,
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"Going to reset ISUP for app %s, cic %d range %d\n",
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app->name, cic, range);
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reset_cics(app, cic, range);
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break;
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case ISUP_MSG_RSC:
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LOGP(DISUP, LOGL_DEBUG,
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"Going to reset single CIC %d on app %s\n",
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cic, app->name);
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reset_cic(app, cic);
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break;
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}
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return 0;
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}
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