1 files changed, 0 insertions, 317 deletions
diff --git a/src/libmsc/mncc_sock.c b/src/libmsc/mncc_sock.c
deleted file mode 100644
index 0c696f2d9..000000000
--- a/src/libmsc/mncc_sock.c
+++ /dev/null
@@ -1,317 +0,0 @@
-/* mncc_sock.c: Tie the MNCC interface to a unix domain socket */
-
-/* (C) 2008-2010 by Harald Welte <laforge@gnumonks.org>
- * (C) 2009 by Andreas Eversberg <Andreas.Eversberg@versatel.de>
- * (C) 2012 by Holger Hans Peter Freyther
- * 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 <unistd.h>
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-#include <assert.h>
-#include <sys/socket.h>
-#include <sys/un.h>
-
-#include <osmocom/core/talloc.h>
-#include <osmocom/core/select.h>
-#include <osmocom/core/socket.h>
-#include <osmocom/gsm/protocol/gsm_04_08.h>
-
-#include <openbsc/debug.h>
-#include <openbsc/mncc.h>
-#include <openbsc/gsm_data.h>
-
-struct mncc_sock_state {
-	struct gsm_network *net;
-	struct osmo_fd listen_bfd;	/* fd for listen socket */
-	struct osmo_fd conn_bfd;		/* fd for connection to lcr */
-};
-
-/* input from CC code into mncc_sock */
-int mncc_sock_from_cc(struct gsm_network *net, struct msgb *msg)
-{
-	struct gsm_mncc *mncc_in = (struct gsm_mncc *) msgb_data(msg);
-	int msg_type = mncc_in->msg_type;
-
-	/* Check if we currently have a MNCC handler connected */
-	if (net->mncc_state->conn_bfd.fd < 0) {
-		LOGP(DMNCC, LOGL_ERROR, "mncc_sock receives %s for external CC app "
-			"but socket is gone\n", get_mncc_name(msg_type));
-		if (!mncc_is_data_frame(msg_type)) {
-			/* release the request */
-			struct gsm_mncc mncc_out;
-			memset(&mncc_out, 0, sizeof(mncc_out));
-			mncc_out.callref = mncc_in->callref;
-			mncc_set_cause(&mncc_out, GSM48_CAUSE_LOC_PRN_S_LU,
-					GSM48_CC_CAUSE_TEMP_FAILURE);
-			mncc_tx_to_cc(net, MNCC_REL_REQ, &mncc_out);
-		}
-		/* free the original message */
-		msgb_free(msg);
-		return -1;
-	}
-
-	/* FIXME: check for some maximum queue depth? */
-
-	/* Actually enqueue the message and mark socket write need */
-	msgb_enqueue(&net->upqueue, msg);
-	net->mncc_state->conn_bfd.when |= BSC_FD_WRITE;
-	return 0;
-}
-
-static void mncc_sock_close(struct mncc_sock_state *state)
-{
-	struct osmo_fd *bfd = &state->conn_bfd;
-
-	LOGP(DMNCC, LOGL_NOTICE, "MNCC Socket has LOST connection\n");
-
-	close(bfd->fd);
-	bfd->fd = -1;
-	osmo_fd_unregister(bfd);
-
-	/* re-enable the generation of ACCEPT for new connections */
-	state->listen_bfd.when |= BSC_FD_READ;
-
-	/* release all exisitng calls */
-	gsm0408_clear_all_trans(state->net, GSM48_PDISC_CC);
-
-	/* flush the queue */
-	while (!llist_empty(&state->net->upqueue)) {
-		struct msgb *msg = msgb_dequeue(&state->net->upqueue);
-		msgb_free(msg);
-	}
-}
-
-static int mncc_sock_read(struct osmo_fd *bfd)
-{
-	struct mncc_sock_state *state = (struct mncc_sock_state *)bfd->data;
-	struct gsm_mncc *mncc_prim;
-	struct msgb *msg;
-	int rc;
-
-	msg = msgb_alloc(sizeof(*mncc_prim)+256, "mncc_sock_rx");
-	if (!msg)
-		return -ENOMEM;
-
-	mncc_prim = (struct gsm_mncc *) msg->tail;
-
-	rc = recv(bfd->fd, msg->tail, msgb_tailroom(msg), 0);
-	if (rc == 0)
-		goto close;
-
-	if (rc < 0) {
-		if (errno == EAGAIN)
-			return 0;
-		goto close;
-	}
-
-	rc = mncc_tx_to_cc(state->net, mncc_prim->msg_type, mncc_prim);
-
-	/* as we always synchronously process the message in mncc_send() and
-	 * its callbacks, we can free the message here. */
-	msgb_free(msg);
-
-	return rc;
-
-close:
-	msgb_free(msg);
-	mncc_sock_close(state);
-	return -1;
-}
-
-static int mncc_sock_write(struct osmo_fd *bfd)
-{
-	struct mncc_sock_state *state = bfd->data;
-	struct gsm_network *net = state->net;
-	int rc;
-
-	while (!llist_empty(&net->upqueue)) {
-		struct msgb *msg, *msg2;
-		struct gsm_mncc *mncc_prim;
-
-		/* peek at the beginning of the queue */
-		msg = llist_entry(net->upqueue.next, struct msgb, list);
-		mncc_prim = (struct gsm_mncc *)msg->data;
-
-		bfd->when &= ~BSC_FD_WRITE;
-
-		/* bug hunter 8-): maybe someone forgot msgb_put(...) ? */
-		if (!msgb_length(msg)) {
-			LOGP(DMNCC, LOGL_ERROR, "message type (%d) with ZERO "
-				"bytes!\n", mncc_prim->msg_type);
-			goto dontsend;
-		}
-
-		/* try to send it over the socket */
-		rc = write(bfd->fd, msgb_data(msg), msgb_length(msg));
-		if (rc == 0)
-			goto close;
-		if (rc < 0) {
-			if (errno == EAGAIN) {
-				bfd->when |= BSC_FD_WRITE;
-				break;
-			}
-			goto close;
-		}
-
-dontsend:
-		/* _after_ we send it, we can deueue */
-		msg2 = msgb_dequeue(&net->upqueue);
-		assert(msg == msg2);
-		msgb_free(msg);
-	}
-	return 0;
-
-close:
-	mncc_sock_close(state);
-
-	return -1;
-}
-
-static int mncc_sock_cb(struct osmo_fd *bfd, unsigned int flags)
-{
-	int rc = 0;
-
-	if (flags & BSC_FD_READ)
-		rc = mncc_sock_read(bfd);
-	if (rc < 0)
-		return rc;
-
-	if (flags & BSC_FD_WRITE)
-		rc = mncc_sock_write(bfd);
-
-	return rc;
-}
-
-/**
- * Send a version indication to the remote.
- */
-static void queue_hello(struct mncc_sock_state *mncc)
-{
-	struct gsm_mncc_hello *hello;
-	struct msgb *msg;
-
-	msg = msgb_alloc(512, "mncc hello");
-	if (!msg) {
-		LOGP(DMNCC, LOGL_ERROR, "Failed to allocate hello.\n");
-		mncc_sock_close(mncc);
-		return;
-	}
-
-	hello = (struct gsm_mncc_hello *) msgb_put(msg, sizeof(*hello));
-	hello->msg_type = MNCC_SOCKET_HELLO;
-	hello->version = MNCC_SOCK_VERSION;
-	hello->mncc_size = sizeof(struct gsm_mncc);
-	hello->data_frame_size = sizeof(struct gsm_data_frame);
-	hello->called_offset = offsetof(struct gsm_mncc, called);
-	hello->signal_offset = offsetof(struct gsm_mncc, signal);
-	hello->emergency_offset = offsetof(struct gsm_mncc, emergency);
-
-	msgb_enqueue(&mncc->net->upqueue, msg);
-	mncc->conn_bfd.when |= BSC_FD_WRITE;
-}
-
-/* accept a new connection */
-static int mncc_sock_accept(struct osmo_fd *bfd, unsigned int flags)
-{
-	struct mncc_sock_state *state = (struct mncc_sock_state *)bfd->data;
-	struct osmo_fd *conn_bfd = &state->conn_bfd;
-	struct sockaddr_un un_addr;
-	socklen_t len;
-	int rc;
-
-	len = sizeof(un_addr);
-	rc = accept(bfd->fd, (struct sockaddr *) &un_addr, &len);
-	if (rc < 0) {
-		LOGP(DMNCC, LOGL_ERROR, "Failed to accept a new connection\n");
-		return -1;
-	}
-
-	if (conn_bfd->fd >= 0) {
-		LOGP(DMNCC, LOGL_NOTICE, "MNCC app connects but we already have "
-			"another active connection ?!?\n");
-		/* We already have one MNCC app connected, this is all we support */
-		state->listen_bfd.when &= ~BSC_FD_READ;
-		close(rc);
-		return 0;
-	}
-
-	conn_bfd->fd = rc;
-	conn_bfd->when = BSC_FD_READ;
-	conn_bfd->cb = mncc_sock_cb;
-	conn_bfd->data = state;
-
-	if (osmo_fd_register(conn_bfd) != 0) {
-		LOGP(DMNCC, LOGL_ERROR, "Failed to register new connection fd\n");
-		close(conn_bfd->fd);
-		conn_bfd->fd = -1;
-		return -1;
-	}
-
-	LOGP(DMNCC, LOGL_NOTICE, "MNCC Socket has connection with external "
-		"call control application\n");
-
-	queue_hello(state);
-	return 0;
-}
-
-
-int mncc_sock_init(struct gsm_network *net, const char *sock_path)
-{
-	struct mncc_sock_state *state;
-	struct osmo_fd *bfd;
-	int rc;
-
-	state = talloc_zero(tall_bsc_ctx, struct mncc_sock_state);
-	if (!state)
-		return -ENOMEM;
-
-	state->net = net;
-	state->conn_bfd.fd = -1;
-
-	bfd = &state->listen_bfd;
-
-	bfd->fd = osmo_sock_unix_init(SOCK_SEQPACKET, 0, sock_path,
-		OSMO_SOCK_F_BIND);
-	if (bfd->fd < 0) {
-		LOGP(DMNCC, LOGL_ERROR, "Could not create unix socket: %s: %s\n",
-		     sock_path, strerror(errno));
-		talloc_free(state);
-		return -1;
-	}
-
-	bfd->when = BSC_FD_READ;
-	bfd->cb = mncc_sock_accept;
-	bfd->data = state;
-
-	rc = osmo_fd_register(bfd);
-	if (rc < 0) {
-		LOGP(DMNCC, LOGL_ERROR, "Could not register listen fd: %d\n", rc);
-		close(bfd->fd);
-		talloc_free(state);
-		return rc;
-	}
-
-	net->mncc_state = state;
-
-	LOGP(DMNCC, LOGL_NOTICE, "MNCC socket at %s\n", sock_path);
-	return 0;
-}