aboutsummaryrefslogtreecommitdiffstats
path: root/src/libmsc/mncc_builtin.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/libmsc/mncc_builtin.c')
-rw-r--r--src/libmsc/mncc_builtin.c383
1 files changed, 0 insertions, 383 deletions
diff --git a/src/libmsc/mncc_builtin.c b/src/libmsc/mncc_builtin.c
deleted file mode 100644
index ac6e7345d..000000000
--- a/src/libmsc/mncc_builtin.c
+++ /dev/null
@@ -1,383 +0,0 @@
-/* mncc_builtin.c - default, minimal built-in MNCC Application for
- * standalone bsc_hack (network-in-the-box mode) */
-
-/* (C) 2008-2010 by Harald Welte <laforge@gnumonks.org>
- * (C) 2009 by Andreas Eversberg <Andreas.Eversberg@versatel.de>
- * All Rights Reserved
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- */
-
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-
-#include <openbsc/gsm_04_08.h>
-#include <openbsc/debug.h>
-#include <openbsc/mncc.h>
-#include <openbsc/mncc_int.h>
-#include <osmocom/core/talloc.h>
-#include <openbsc/gsm_data.h>
-#include <openbsc/transaction.h>
-#include <openbsc/rtp_proxy.h>
-
-void *tall_call_ctx;
-
-static LLIST_HEAD(call_list);
-
-static uint32_t new_callref = 0x00000001;
-
-struct mncc_int mncc_int = {
- .def_codec = { GSM48_CMODE_SPEECH_V1, GSM48_CMODE_SPEECH_V1 },
-};
-
-static void free_call(struct gsm_call *call)
-{
- llist_del(&call->entry);
- DEBUGP(DMNCC, "(call %x) Call removed.\n", call->callref);
- talloc_free(call);
-}
-
-
-static struct gsm_call *get_call_ref(uint32_t callref)
-{
- struct gsm_call *callt;
-
- llist_for_each_entry(callt, &call_list, entry) {
- if (callt->callref == callref)
- return callt;
- }
- return NULL;
-}
-
-/* on incoming call, look up database and send setup to remote subscr. */
-static int mncc_setup_ind(struct gsm_call *call, int msg_type,
- struct gsm_mncc *setup)
-{
- struct gsm_mncc mncc;
- struct gsm_call *remote;
-
- memset(&mncc, 0, sizeof(struct gsm_mncc));
- mncc.callref = call->callref;
-
- /* already have remote call */
- if (call->remote_ref)
- return 0;
-
- /* transfer mode 1 would be packet mode, which was never specified */
- if (setup->bearer_cap.mode != 0) {
- LOGP(DMNCC, LOGL_NOTICE, "(call %x) We don't support "
- "packet mode\n", call->callref);
- mncc_set_cause(&mncc, GSM48_CAUSE_LOC_PRN_S_LU,
- GSM48_CC_CAUSE_BEARER_CA_UNAVAIL);
- goto out_reject;
- }
-
- /* we currently only do speech */
- if (setup->bearer_cap.transfer != GSM_MNCC_BCAP_SPEECH) {
- LOGP(DMNCC, LOGL_NOTICE, "(call %x) We only support "
- "voice calls\n", call->callref);
- mncc_set_cause(&mncc, GSM48_CAUSE_LOC_PRN_S_LU,
- GSM48_CC_CAUSE_BEARER_CA_UNAVAIL);
- goto out_reject;
- }
-
- /* create remote call */
- if (!(remote = talloc_zero(tall_call_ctx, struct gsm_call))) {
- mncc_set_cause(&mncc, GSM48_CAUSE_LOC_PRN_S_LU,
- GSM48_CC_CAUSE_RESOURCE_UNAVAIL);
- goto out_reject;
- }
- llist_add_tail(&remote->entry, &call_list);
- remote->net = call->net;
- remote->callref = new_callref++;
- DEBUGP(DMNCC, "(call %x) Creating new remote instance %x.\n",
- call->callref, remote->callref);
-
- /* link remote call */
- call->remote_ref = remote->callref;
- remote->remote_ref = call->callref;
-
- /* send call proceeding */
- memset(&mncc, 0, sizeof(struct gsm_mncc));
- mncc.callref = call->callref;
- DEBUGP(DMNCC, "(call %x) Accepting call.\n", call->callref);
- mncc_tx_to_cc(call->net, MNCC_CALL_PROC_REQ, &mncc);
-
- /* modify mode */
- memset(&mncc, 0, sizeof(struct gsm_mncc));
- mncc.callref = call->callref;
- DEBUGP(DMNCC, "(call %x) Modify channel mode\n", call->callref);
- mncc_tx_to_cc(call->net, MNCC_LCHAN_MODIFY, &mncc);
-
- /* send setup to remote */
-// setup->fields |= MNCC_F_SIGNAL;
-// setup->signal = GSM48_SIGNAL_DIALTONE;
- setup->callref = remote->callref;
- DEBUGP(DMNCC, "(call %x) Forwarding SETUP to remote.\n", call->callref);
- return mncc_tx_to_cc(remote->net, MNCC_SETUP_REQ, setup);
-
-out_reject:
- mncc_tx_to_cc(call->net, MNCC_REJ_REQ, &mncc);
- free_call(call);
- return 0;
-}
-
-static int mncc_alert_ind(struct gsm_call *call, int msg_type,
- struct gsm_mncc *alert)
-{
- struct gsm_call *remote;
-
- /* send alerting to remote */
- if (!(remote = get_call_ref(call->remote_ref)))
- return 0;
- alert->callref = remote->callref;
- DEBUGP(DMNCC, "(call %x) Forwarding ALERT to remote.\n", call->callref);
- return mncc_tx_to_cc(remote->net, MNCC_ALERT_REQ, alert);
-}
-
-static int mncc_notify_ind(struct gsm_call *call, int msg_type,
- struct gsm_mncc *notify)
-{
- struct gsm_call *remote;
-
- /* send notify to remote */
- if (!(remote = get_call_ref(call->remote_ref)))
- return 0;
- notify->callref = remote->callref;
- DEBUGP(DMNCC, "(call %x) Forwarding NOTIF to remote.\n", call->callref);
- return mncc_tx_to_cc(remote->net, MNCC_NOTIFY_REQ, notify);
-}
-
-static int mncc_setup_cnf(struct gsm_call *call, int msg_type,
- struct gsm_mncc *connect)
-{
- struct gsm_mncc connect_ack, frame_recv;
- struct gsm_network *net = call->net;
- struct gsm_call *remote;
- struct gsm_mncc_bridge bridge = { .msg_type = MNCC_BRIDGE };
-
- /* acknowledge connect */
- memset(&connect_ack, 0, sizeof(struct gsm_mncc));
- connect_ack.callref = call->callref;
- DEBUGP(DMNCC, "(call %x) Acknowledge SETUP.\n", call->callref);
- mncc_tx_to_cc(call->net, MNCC_SETUP_COMPL_REQ, &connect_ack);
-
- /* send connect message to remote */
- if (!(remote = get_call_ref(call->remote_ref)))
- return 0;
- connect->callref = remote->callref;
- DEBUGP(DMNCC, "(call %x) Sending CONNECT to remote.\n", call->callref);
- mncc_tx_to_cc(remote->net, MNCC_SETUP_RSP, connect);
-
- /* bridge tch */
- bridge.callref[0] = call->callref;
- bridge.callref[1] = call->remote_ref;
- DEBUGP(DMNCC, "(call %x) Bridging with remote.\n", call->callref);
-
- /* proxy mode */
- if (!net->handover.active) {
- /* in the no-handover case, we can bridge, i.e. use
- * the old RTP proxy code */
- return mncc_tx_to_cc(call->net, MNCC_BRIDGE, &bridge);
- } else {
- /* in case of handover, we need to re-write the RTP
- * SSRC, sequence and timestamp values and thus
- * need to enable RTP receive for both directions */
- memset(&frame_recv, 0, sizeof(struct gsm_mncc));
- frame_recv.callref = call->callref;
- mncc_tx_to_cc(call->net, MNCC_FRAME_RECV, &frame_recv);
- frame_recv.callref = call->remote_ref;
- return mncc_tx_to_cc(call->net, MNCC_FRAME_RECV, &frame_recv);
- }
-}
-
-static int mncc_disc_ind(struct gsm_call *call, int msg_type,
- struct gsm_mncc *disc)
-{
- struct gsm_call *remote;
-
- /* send release */
- DEBUGP(DMNCC, "(call %x) Releasing call with cause %d\n",
- call->callref, disc->cause.value);
- mncc_tx_to_cc(call->net, MNCC_REL_REQ, disc);
-
- /* send disc to remote */
- if (!(remote = get_call_ref(call->remote_ref))) {
- return 0;
- }
- disc->callref = remote->callref;
- DEBUGP(DMNCC, "(call %x) Disconnecting remote with cause %d\n",
- remote->callref, disc->cause.value);
- return mncc_tx_to_cc(remote->net, MNCC_DISC_REQ, disc);
-}
-
-static int mncc_rel_ind(struct gsm_call *call, int msg_type, struct gsm_mncc *rel)
-{
- struct gsm_call *remote;
-
- /* send release to remote */
- if (!(remote = get_call_ref(call->remote_ref))) {
- free_call(call);
- return 0;
- }
-
- rel->callref = remote->callref;
- DEBUGP(DMNCC, "(call %x) Releasing remote with cause %d\n",
- call->callref, rel->cause.value);
-
- /*
- * Release this side of the call right now. Otherwise we end up
- * in this method for the other call and will also try to release
- * it and then we will end up with a double free and a crash
- */
- free_call(call);
- mncc_tx_to_cc(remote->net, MNCC_REL_REQ, rel);
-
- return 0;
-}
-
-static int mncc_rel_cnf(struct gsm_call *call, int msg_type, struct gsm_mncc *rel)
-{
- free_call(call);
- return 0;
-}
-
-/* Internal MNCC handler input function (from CC -> MNCC -> here) */
-int int_mncc_recv(struct gsm_network *net, struct msgb *msg)
-{
- void *arg = msgb_data(msg);
- struct gsm_mncc *data = arg;
- int msg_type = data->msg_type;
- int callref;
- struct gsm_call *call = NULL, *callt;
- int rc = 0;
-
- /* Special messages */
- switch(msg_type) {
- }
-
- /* find callref */
- callref = data->callref;
- llist_for_each_entry(callt, &call_list, entry) {
- if (callt->callref == callref) {
- call = callt;
- break;
- }
- }
-
- /* create callref, if setup is received */
- if (!call) {
- if (msg_type != MNCC_SETUP_IND)
- goto out_free; /* drop */
- /* create call */
- if (!(call = talloc_zero(tall_call_ctx, struct gsm_call))) {
- struct gsm_mncc rel;
-
- memset(&rel, 0, sizeof(struct gsm_mncc));
- rel.callref = callref;
- mncc_set_cause(&rel, GSM48_CAUSE_LOC_PRN_S_LU,
- GSM48_CC_CAUSE_RESOURCE_UNAVAIL);
- mncc_tx_to_cc(net, MNCC_REL_REQ, &rel);
- goto out_free;
- }
- llist_add_tail(&call->entry, &call_list);
- call->net = net;
- call->callref = callref;
- DEBUGP(DMNCC, "(call %x) Call created.\n", call->callref);
- }
-
- if (mncc_is_data_frame(msg_type)) {
- LOGP(DMNCC, LOGL_ERROR, "(call %x) Received data frame, which is not supported.\n",
- call->callref);
- goto out_free;
- }
-
- DEBUGP(DMNCC, "(call %x) Received message %s\n", call->callref,
- get_mncc_name(msg_type));
-
- switch(msg_type) {
- case MNCC_SETUP_IND:
- rc = mncc_setup_ind(call, msg_type, arg);
- break;
- case MNCC_SETUP_CNF:
- rc = mncc_setup_cnf(call, msg_type, arg);
- break;
- case MNCC_SETUP_COMPL_IND:
- break;
- case MNCC_CALL_CONF_IND:
- /* we now need to MODIFY the channel */
- mncc_tx_to_cc(call->net, MNCC_LCHAN_MODIFY, data);
- break;
- case MNCC_ALERT_IND:
- rc = mncc_alert_ind(call, msg_type, arg);
- break;
- case MNCC_NOTIFY_IND:
- rc = mncc_notify_ind(call, msg_type, arg);
- break;
- case MNCC_DISC_IND:
- rc = mncc_disc_ind(call, msg_type, arg);
- break;
- case MNCC_REL_IND:
- case MNCC_REJ_IND:
- rc = mncc_rel_ind(call, msg_type, arg);
- break;
- case MNCC_REL_CNF:
- rc = mncc_rel_cnf(call, msg_type, arg);
- break;
- case MNCC_FACILITY_IND:
- break;
- case MNCC_START_DTMF_IND:
- rc = mncc_tx_to_cc(net, MNCC_START_DTMF_REJ, data);
- break;
- case MNCC_STOP_DTMF_IND:
- rc = mncc_tx_to_cc(net, MNCC_STOP_DTMF_RSP, data);
- break;
- case MNCC_MODIFY_IND:
- mncc_set_cause(data, GSM48_CAUSE_LOC_PRN_S_LU,
- GSM48_CC_CAUSE_SERV_OPT_UNIMPL);
- DEBUGP(DMNCC, "(call %x) Rejecting MODIFY with cause %d\n",
- call->callref, data->cause.value);
- rc = mncc_tx_to_cc(net, MNCC_MODIFY_REJ, data);
- break;
- case MNCC_MODIFY_CNF:
- break;
- case MNCC_HOLD_IND:
- mncc_set_cause(data, GSM48_CAUSE_LOC_PRN_S_LU,
- GSM48_CC_CAUSE_SERV_OPT_UNIMPL);
- DEBUGP(DMNCC, "(call %x) Rejecting HOLD with cause %d\n",
- call->callref, data->cause.value);
- rc = mncc_tx_to_cc(net, MNCC_HOLD_REJ, data);
- break;
- case MNCC_RETRIEVE_IND:
- mncc_set_cause(data, GSM48_CAUSE_LOC_PRN_S_LU,
- GSM48_CC_CAUSE_SERV_OPT_UNIMPL);
- DEBUGP(DMNCC, "(call %x) Rejecting RETRIEVE with cause %d\n",
- call->callref, data->cause.value);
- rc = mncc_tx_to_cc(net, MNCC_RETRIEVE_REJ, data);
- break;
- default:
- LOGP(DMNCC, LOGL_NOTICE, "(call %x) Message unhandled\n", callref);
- break;
- }
-
-out_free:
- msgb_free(msg);
-
- return rc;
-}