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