Merge remote branch 'origin/master' into on-waves/mgcp
Conflicts:
openbsc/include/openbsc/Makefile.am
openbsc/src/Makefile.am
diff --git a/openbsc/include/openbsc/Makefile.am b/openbsc/include/openbsc/Makefile.am
index 2343549..483997a 100644
--- a/openbsc/include/openbsc/Makefile.am
+++ b/openbsc/include/openbsc/Makefile.am
@@ -5,7 +5,7 @@
ipaccess.h rs232.h openbscdefines.h rtp_proxy.h \
bsc_rll.h mncc.h transaction.h ussd.h gsm_04_80.h \
silent_call.h mgcp.h meas_rep.h rest_octets.h \
- system_information.h handover.h
+ system_information.h handover.h mgcp_internal.h
openbsc_HEADERS = gsm_04_08.h meas_rep.h
openbscdir = $(includedir)/openbsc
diff --git a/openbsc/include/openbsc/mgcp.h b/openbsc/include/openbsc/mgcp.h
index 2416fad..f7e800b 100644
--- a/openbsc/include/openbsc/mgcp.h
+++ b/openbsc/include/openbsc/mgcp.h
@@ -1,8 +1,8 @@
/* A Media Gateway Control Protocol Media Gateway: RFC 3435 */
/*
- * (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org>
- * (C) 2009 by On-Waves
+ * (C) 2009-2010 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2009-2010 by On-Waves
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
@@ -26,8 +26,9 @@
#include <osmocore/msgb.h>
+#include <arpa/inet.h>
+
#define RTP_PORT_DEFAULT 4000
-extern unsigned int rtp_base_port;
/**
* Calculate the RTP audio port for the given multiplex
@@ -53,18 +54,69 @@
return base + (multiplex * 2);
}
-int mgcp_parse_config(const char *config_file, struct gsm_network *dummy_network);
-struct msgb *mgcp_handle_message(struct msgb *msg);
-struct msgb *mgcp_create_rsip(void);
-int mgcp_vty_init(void);
+/*
+ * Handling of MGCP Endpoints and the MGCP Config
+ */
+struct mgcp_endpoint;
+struct mgcp_config;
-/* endpoint managed */
#define MGCP_ENDP_CRCX 1
#define MGCP_ENDP_DLCX 2
#define MGCP_ENDP_MDCX 3
-typedef int (*mgcp_change)(int endpoint, int state, int local_rtp, void *);
-void mgcp_set_change_cb(mgcp_change cb, void *data);
+/*
+ * what to do with the msg?
+ * - continue as usual?
+ * - reject and send a failure code?
+ * - defer? do not send anything
+ */
+#define MGCP_POLICY_CONT 4
+#define MGCP_POLICY_REJECT 5
+#define MGCP_POLICY_DEFER 6
+
+typedef int (*mgcp_change)(struct mgcp_config *cfg, int endpoint, int state, int local_rtp);
+typedef int (*mgcp_policy)(struct mgcp_config *cfg, int endpoint, int state, const char *transactio_id);
+
+struct mgcp_config {
+ int source_port;
+ char *local_ip;
+ char *source_addr;
+ unsigned int number_endpoints;
+ char *bts_ip;
+
+ struct in_addr bts_in;
+ char *audio_name;
+ int audio_payload;
+ int audio_loop;
+ int early_bind;
+ int rtp_base_port;
+
+ char *forward_ip;
+ int forward_port;
+
+ mgcp_change change_cb;
+ mgcp_policy policy_cb;
+ void *data;
+
+ struct mgcp_endpoint *endpoints;
+ unsigned int last_call_id;
+};
+
+/* config management */
+struct mgcp_config *mgcp_config_alloc(void);
+int mgcp_parse_config(const char *config_file, struct mgcp_config *cfg);
+int mgcp_vty_init(void);
+int mgcp_endpoints_allocate(struct mgcp_config *cfg);
+int mgcp_bind_rtp_port(struct mgcp_endpoint *endp, int rtp_port);
+void mgcp_free_endp(struct mgcp_endpoint *endp);
+
+/*
+ * format helper functions
+ */
+struct msgb *mgcp_handle_message(struct mgcp_config *cfg, struct msgb *msg);
+struct msgb *mgcp_create_rsip(void);
+struct msgb *mgcp_create_response_with_data(int code, const char *msg, const char *trans, const char *data);
+
#endif
diff --git a/openbsc/include/openbsc/mgcp_internal.h b/openbsc/include/openbsc/mgcp_internal.h
new file mode 100644
index 0000000..10d0ca6
--- /dev/null
+++ b/openbsc/include/openbsc/mgcp_internal.h
@@ -0,0 +1,64 @@
+/* MGCP Private Data */
+
+/*
+ * (C) 2009-2010 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2009-2010 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 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.
+ *
+ */
+
+#ifndef OPENBSC_MGCP_DATA_H
+#define OPENBSC_MGCP_DATA_H
+
+#include <osmocore/select.h>
+
+#define CI_UNUSED 0
+
+struct mgcp_endpoint {
+ int ci;
+ char *callid;
+ char *local_options;
+ int conn_mode;
+
+ int bts_payload_type;
+ int net_payload_type;
+
+ /* the local rtp port we are binding to */
+ int rtp_port;
+
+ /*
+ * RTP mangling:
+ * - we get RTP and RTCP to us and need to forward to the BTS
+ * - we get RTP and RTCP from the BTS and forward to the network
+ */
+ struct bsc_fd local_rtp;
+ struct bsc_fd local_rtcp;
+
+ struct in_addr remote;
+ struct in_addr bts;
+
+ /* in network byte order */
+ int net_rtp, net_rtcp;
+ int bts_rtp, bts_rtcp;
+
+ /* backpointer */
+ struct mgcp_config *cfg;
+};
+
+#define ENDPOINT_NUMBER(endp) abs(endp - endp->cfg->endpoints)
+
+#endif
diff --git a/openbsc/src/Makefile.am b/openbsc/src/Makefile.am
index cfe025e..5dac9de 100644
--- a/openbsc/src/Makefile.am
+++ b/openbsc/src/Makefile.am
@@ -41,7 +41,8 @@
isdnsync_SOURCES = isdnsync.c
-bsc_mgcp_SOURCES = mgcp/mgcp_main.c mgcp/mgcp_protocol.c debug.c telnet_interface.c
+bsc_mgcp_SOURCES = mgcp/mgcp_main.c mgcp/mgcp_protocol.c mgcp/mgcp_network.c mgcp/mgcp_vty.c \
+ debug.c telnet_interface.c
bsc_mgcp_LDADD = libvty.a
ipaccess_proxy_SOURCES = ipaccess/ipaccess-proxy.c debug.c
diff --git a/openbsc/src/mgcp/mgcp_main.c b/openbsc/src/mgcp/mgcp_main.c
index b8d892b..cea0ba4 100644
--- a/openbsc/src/mgcp/mgcp_main.c
+++ b/openbsc/src/mgcp/mgcp_main.c
@@ -31,7 +31,6 @@
#include <unistd.h>
#include <sys/socket.h>
-#include <arpa/inet.h>
#include <openbsc/debug.h>
#include <osmocore/msgb.h>
@@ -41,9 +40,6 @@
#include <openbsc/mgcp.h>
#include <openbsc/telnet_interface.h>
-#include <vty/command.h>
-#include <vty/vty.h>
-
/* this is here for the vty... it will never be called */
void subscr_put() { abort(); }
@@ -52,18 +48,15 @@
#warning "Make use of the rtp proxy code"
-static int source_port = 2427;
-static const char *source_addr = "0.0.0.0";
static struct bsc_fd bfd;
static int first_request = 1;
+static struct mgcp_config *cfg;
static char *config_file = "mgcp.cfg";
/* used by msgb and mgcp */
void *tall_bsc_ctx = NULL;
-unsigned int rtp_base_port = RTP_PORT_DEFAULT;
-
static void print_help()
{
printf("Some useful help...\n");
@@ -136,7 +129,7 @@
/* handle message now */
msg->l2h = msgb_put(msg, rc);
- resp = mgcp_handle_message(msg);
+ resp = mgcp_handle_message(cfg, msg);
msgb_reset(msg);
if (resp) {
@@ -147,15 +140,6 @@
}
-int bsc_vty_init(struct gsm_network *dummy)
-{
- cmd_init(1);
- vty_init();
-
- mgcp_vty_init();
- return 0;
-}
-
int main(int argc, char** argv)
{
struct gsm_network dummy_network;
@@ -170,10 +154,14 @@
debug_add_target(stderr_target);
debug_set_all_filter(stderr_target, 1);
+ cfg = mgcp_config_alloc();
+ if (!cfg)
+ return -1;
+
handle_options(argc, argv);
telnet_init(&dummy_network, 4243);
- rc = mgcp_parse_config(config_file, &dummy_network);
+ rc = mgcp_parse_config(config_file, cfg);
if (rc < 0)
return rc;
@@ -192,8 +180,8 @@
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
- addr.sin_port = htons(source_port);
- inet_aton(source_addr, &addr.sin_addr);
+ addr.sin_port = htons(cfg->source_port);
+ inet_aton(cfg->source_addr, &addr.sin_addr);
if (bind(bfd.fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
perror("Gateway failed to bind");
diff --git a/openbsc/src/mgcp/mgcp_network.c b/openbsc/src/mgcp/mgcp_network.c
new file mode 100644
index 0000000..b76ca47
--- /dev/null
+++ b/openbsc/src/mgcp/mgcp_network.c
@@ -0,0 +1,255 @@
+/* A Media Gateway Control Protocol Media Gateway: RFC 3435 */
+/* The protocol implementation */
+
+/*
+ * (C) 2009-2010 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2009-2010 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 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 <string.h>
+#include <unistd.h>
+#include <endian.h>
+
+#include <sys/socket.h>
+#include <arpa/inet.h>
+
+#include <osmocore/msgb.h>
+#include <osmocore/talloc.h>
+#include <osmocore/select.h>
+
+#include <openbsc/debug.h>
+#include <openbsc/mgcp.h>
+#include <openbsc/mgcp_internal.h>
+
+#warning "Make use of the rtp proxy code"
+
+/* according to rtp_proxy.c RFC 3550 */
+struct rtp_hdr {
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+ u_int8_t csrc_count:4,
+ extension:1,
+ padding:1,
+ version:2;
+ u_int8_t payload_type:7,
+ marker:1;
+#elif __BYTE_ORDER == __BIG_ENDIAN
+ u_int8_t version:2,
+ padding:1,
+ extension:1,
+ csrc_count:4;
+ u_int8_t marker:1,
+ payload_type:7;
+#endif
+ u_int16_t sequence;
+ u_int32_t timestamp;
+ u_int32_t ssrc;
+} __attribute__((packed));
+
+
+enum {
+ DEST_NETWORK = 0,
+ DEST_BTS = 1,
+};
+
+enum {
+ PROTO_RTP,
+ PROTO_RTCP,
+};
+
+
+static int udp_send(int fd, struct in_addr *addr, int port, char *buf, int len)
+{
+ struct sockaddr_in out;
+ out.sin_family = AF_INET;
+ out.sin_port = port;
+ memcpy(&out.sin_addr, addr, sizeof(*addr));
+
+ return sendto(fd, buf, len, 0, (struct sockaddr *)&out, sizeof(out));
+}
+
+static void patch_payload(int payload, char *data, int len)
+{
+ struct rtp_hdr *rtp_hdr;
+
+ if (len < sizeof(*rtp_hdr))
+ return;
+
+ rtp_hdr = (struct rtp_hdr *) data;
+ rtp_hdr->payload_type = payload;
+}
+
+/*
+ * There is data coming. We will have to figure out if it
+ * came from the BTS or the MediaGateway of the MSC. On top
+ * of that we need to figure out if it was RTP or RTCP.
+ *
+ * Currently we do not communicate with the BSC so we have
+ * no idea where the BTS is listening for RTP and need to
+ * do the classic routing trick. Wait for the first packet
+ * from the BTS and then go ahead.
+ */
+static int rtp_data_cb(struct bsc_fd *fd, unsigned int what)
+{
+ char buf[4096];
+ struct sockaddr_in addr;
+ socklen_t slen = sizeof(addr);
+ struct mgcp_endpoint *endp;
+ struct mgcp_config *cfg;
+ int rc, dest, proto;
+
+ endp = (struct mgcp_endpoint *) fd->data;
+ cfg = endp->cfg;
+
+ rc = recvfrom(fd->fd, &buf, sizeof(buf), 0,
+ (struct sockaddr *) &addr, &slen);
+ if (rc < 0) {
+ LOGP(DMGCP, LOGL_ERROR, "Failed to receive message on: 0x%x\n",
+ ENDPOINT_NUMBER(endp));
+ return -1;
+ }
+
+ /* do not forward aynthing... maybe there is a packet from the bts */
+ if (endp->ci == CI_UNUSED) {
+ LOGP(DMGCP, LOGL_ERROR, "Unknown message on endpoint: 0x%x\n", ENDPOINT_NUMBER(endp));
+ return -1;
+ }
+
+ /*
+ * Figure out where to forward it to. This code assumes that we
+ * have received the Connection Modify and know who is a legitimate
+ * partner. According to the spec we could attempt to forward even
+ * after the Create Connection but we will not as we are not really
+ * able to tell if this is legitimate.
+ */
+ #warning "Slight spec violation. With connection mode recvonly we should attempt to forward."
+ dest = memcmp(&addr.sin_addr, &endp->remote, sizeof(addr.sin_addr)) == 0 &&
+ (endp->net_rtp == addr.sin_port || endp->net_rtcp == addr.sin_port)
+ ? DEST_BTS : DEST_NETWORK;
+ proto = fd == &endp->local_rtp ? PROTO_RTP : PROTO_RTCP;
+
+ /* We have no idea who called us, maybe it is the BTS. */
+ if (dest == DEST_NETWORK && (endp->bts_rtp == 0 || cfg->forward_ip)) {
+ /* it was the BTS... */
+ if (!cfg->bts_ip || memcmp(&addr.sin_addr, &cfg->bts_in, sizeof(cfg->bts_in)) == 0) {
+ if (fd == &endp->local_rtp) {
+ endp->bts_rtp = addr.sin_port;
+ } else {
+ endp->bts_rtcp = addr.sin_port;
+ }
+
+ endp->bts = addr.sin_addr;
+ LOGP(DMGCP, LOGL_NOTICE, "Found BTS for endpoint: 0x%x on port: %d/%d\n",
+ ENDPOINT_NUMBER(endp), ntohs(endp->bts_rtp), ntohs(endp->bts_rtcp));
+ }
+ }
+
+ /* dispatch */
+ if (cfg->audio_loop)
+ dest = !dest;
+
+ if (dest == DEST_NETWORK) {
+ patch_payload(endp->net_payload_type, buf, rc);
+ return udp_send(fd->fd, &endp->remote,
+ proto == PROTO_RTP ? endp->net_rtp : endp->net_rtcp,
+ buf, rc);
+ } else {
+ patch_payload(endp->bts_payload_type, buf, rc);
+ return udp_send(fd->fd, &endp->bts,
+ proto == PROTO_RTP ? endp->bts_rtp : endp->bts_rtcp,
+ buf, rc);
+ }
+}
+
+static int create_bind(const char *source_addr, struct bsc_fd *fd, int port)
+{
+ struct sockaddr_in addr;
+ int on = 1;
+
+ fd->fd = socket(AF_INET, SOCK_DGRAM, 0);
+ if (fd->fd < 0) {
+ LOGP(DMGCP, LOGL_ERROR, "Failed to create UDP port.\n");
+ return -1;
+ }
+
+ setsockopt(fd->fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
+ memset(&addr, 0, sizeof(addr));
+ addr.sin_family = AF_INET;
+ addr.sin_port = htons(port);
+ inet_aton(source_addr, &addr.sin_addr);
+
+ if (bind(fd->fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
+ return -1;
+ }
+
+ return 0;
+}
+
+static int bind_rtp(struct mgcp_endpoint *endp)
+{
+ struct mgcp_config *cfg = endp->cfg;
+
+ if (create_bind(cfg->source_addr, &endp->local_rtp, endp->rtp_port) != 0) {
+ LOGP(DMGCP, LOGL_ERROR, "Failed to create RTP port: %s:%d on 0x%x\n",
+ cfg->source_addr, endp->rtp_port, ENDPOINT_NUMBER(endp));
+ goto cleanup0;
+ }
+
+ if (create_bind(cfg->source_addr, &endp->local_rtcp, endp->rtp_port + 1) != 0) {
+ LOGP(DMGCP, LOGL_ERROR, "Failed to create RTCP port: %s:%d on 0x%x\n",
+ cfg->source_addr, endp->rtp_port + 1, ENDPOINT_NUMBER(endp));
+ goto cleanup1;
+ }
+
+ endp->local_rtp.cb = rtp_data_cb;
+ endp->local_rtp.data = endp;
+ endp->local_rtp.when = BSC_FD_READ;
+ if (bsc_register_fd(&endp->local_rtp) != 0) {
+ LOGP(DMGCP, LOGL_ERROR, "Failed to register RTP port %d on 0x%x\n",
+ endp->rtp_port, ENDPOINT_NUMBER(endp));
+ goto cleanup2;
+ }
+
+ endp->local_rtcp.cb = rtp_data_cb;
+ endp->local_rtcp.data = endp;
+ endp->local_rtcp.when = BSC_FD_READ;
+ if (bsc_register_fd(&endp->local_rtcp) != 0) {
+ LOGP(DMGCP, LOGL_ERROR, "Failed to register RTCP port %d on 0x%x\n",
+ endp->rtp_port + 1, ENDPOINT_NUMBER(endp));
+ goto cleanup3;
+ }
+
+ return 0;
+
+cleanup3:
+ bsc_unregister_fd(&endp->local_rtp);
+cleanup2:
+ close(endp->local_rtcp.fd);
+ endp->local_rtcp.fd = -1;
+cleanup1:
+ close(endp->local_rtp.fd);
+ endp->local_rtp.fd = -1;
+cleanup0:
+ return -1;
+}
+
+int mgcp_bind_rtp_port(struct mgcp_endpoint *endp, int rtp_port)
+{
+ endp->rtp_port = rtp_port;
+ return bind_rtp(endp);
+}
diff --git a/openbsc/src/mgcp/mgcp_protocol.c b/openbsc/src/mgcp/mgcp_protocol.c
index 1549202..f7ef547 100644
--- a/openbsc/src/mgcp/mgcp_protocol.c
+++ b/openbsc/src/mgcp/mgcp_protocol.c
@@ -2,8 +2,8 @@
/* The protocol implementation */
/*
- * (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org>
- * (C) 2009 by On-Waves
+ * (C) 2009-2010 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2009-2010 by On-Waves
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
@@ -30,35 +30,13 @@
#include <limits.h>
#include <unistd.h>
-#include <sys/socket.h>
-#include <arpa/inet.h>
-
#include <openbsc/debug.h>
#include <osmocore/msgb.h>
#include <osmocore/talloc.h>
#include <openbsc/gsm_data.h>
#include <osmocore/select.h>
#include <openbsc/mgcp.h>
-#include <openbsc/telnet_interface.h>
-
-#include <vty/command.h>
-#include <vty/vty.h>
-
-#warning "Make use of the rtp proxy code"
-
-static int source_port = 2427;
-static const char *local_ip = NULL;
-static const char *source_addr = "0.0.0.0";
-static unsigned int number_endpoints = 0;
-static const char *bts_ip = NULL;
-static struct in_addr bts_in;
-static const char *audio_name = "GSM-EFR/8000";
-static int audio_payload = 97;
-static int audio_loop = 0;
-static int early_bind = 0;
-
-static char *forward_ip = NULL;
-static int forward_port = 0;
+#include <openbsc/mgcp_internal.h>
enum mgcp_connection_mode {
MGCP_CONN_NONE = 0,
@@ -67,47 +45,6 @@
MGCP_CONN_RECV_SEND = MGCP_CONN_RECV_ONLY | MGCP_CONN_SEND_ONLY,
};
-enum {
- DEST_NETWORK = 0,
- DEST_BTS = 1,
-};
-
-enum {
- PROTO_RTP,
- PROTO_RTCP,
-};
-
-#define CI_UNUSED 0
-static unsigned int last_call_id = 0;
-
-struct mgcp_endpoint {
- int ci;
- char *callid;
- char *local_options;
- int conn_mode;
-
- /* the local rtp port we are binding to */
- int rtp_port;
-
- /*
- * RTP mangling:
- * - we get RTP and RTCP to us and need to forward to the BTS
- * - we get RTP and RTCP from the BTS and forward to the network
- */
- struct bsc_fd local_rtp;
- struct bsc_fd local_rtcp;
-
- struct in_addr remote;
- struct in_addr bts;
-
- /* in network byte order */
- int net_rtp, net_rtcp;
- int bts_rtp, bts_rtcp;
-};
-
-static struct mgcp_endpoint *endpoints = NULL;
-#define ENDPOINT_NUMBER(endp) abs(endp - endpoints)
-
/**
* Macro for tokenizing MGCP messages and SDP in one go.
*
@@ -150,39 +87,36 @@
struct mgcp_request {
char *name;
- struct msgb *(*handle_request) (struct msgb *msg);
+ struct msgb *(*handle_request) (struct mgcp_config *cfg, struct msgb *msg);
char *debug_name;
};
#define MGCP_REQUEST(NAME, REQ, DEBUG_NAME) \
{ .name = NAME, .handle_request = REQ, .debug_name = DEBUG_NAME },
-static struct msgb *handle_audit_endpoint(struct msgb *msg);
-static struct msgb *handle_create_con(struct msgb *msg);
-static struct msgb *handle_delete_con(struct msgb *msg);
-static struct msgb *handle_modify_con(struct msgb *msg);
+static struct msgb *handle_audit_endpoint(struct mgcp_config *cfg, struct msgb *msg);
+static struct msgb *handle_create_con(struct mgcp_config *cfg, struct msgb *msg);
+static struct msgb *handle_delete_con(struct mgcp_config *cfg, struct msgb *msg);
+static struct msgb *handle_modify_con(struct mgcp_config *cfg, struct msgb *msg);
-static mgcp_change change_cb;
-static void *change_cb_data;
-
-static int generate_call_id()
+static int generate_call_id(struct mgcp_config *cfg)
{
int i;
/* use the call id */
- ++last_call_id;
+ ++cfg->last_call_id;
/* handle wrap around */
- if (last_call_id == CI_UNUSED)
- ++last_call_id;
+ if (cfg->last_call_id == CI_UNUSED)
+ ++cfg->last_call_id;
/* callstack can only be of size number_of_endpoints */
/* verify that the call id is free, e.g. in case of overrun */
- for (i = 1; i < number_endpoints; ++i)
- if (endpoints[i].ci == last_call_id)
- return generate_call_id();
+ for (i = 1; i < cfg->number_endpoints; ++i)
+ if (cfg->endpoints[i].ci == cfg->last_call_id)
+ return generate_call_id(cfg);
- return last_call_id;
+ return cfg->last_call_id;
}
/* FIXIME/TODO: need to have a list of pending transactions and check that */
@@ -191,164 +125,6 @@
return abs(rand());
}
-static int udp_send(int fd, struct in_addr *addr, int port, char *buf, int len)
-{
- struct sockaddr_in out;
- out.sin_family = AF_INET;
- out.sin_port = port;
- memcpy(&out.sin_addr, addr, sizeof(*addr));
-
- return sendto(fd, buf, len, 0, (struct sockaddr *)&out, sizeof(out));
-}
-
-/*
- * There is data coming. We will have to figure out if it
- * came from the BTS or the MediaGateway of the MSC. On top
- * of that we need to figure out if it was RTP or RTCP.
- *
- * Currently we do not communicate with the BSC so we have
- * no idea where the BTS is listening for RTP and need to
- * do the classic routing trick. Wait for the first packet
- * from the BTS and then go ahead.
- */
-static int rtp_data_cb(struct bsc_fd *fd, unsigned int what)
-{
- char buf[4096];
- struct sockaddr_in addr;
- socklen_t slen = sizeof(addr);
- struct mgcp_endpoint *endp;
- int rc, dest, proto;
-
- endp = (struct mgcp_endpoint *) fd->data;
-
- rc = recvfrom(fd->fd, &buf, sizeof(buf), 0,
- (struct sockaddr *) &addr, &slen);
- if (rc < 0) {
- LOGP(DMGCP, LOGL_ERROR, "Failed to receive message on: 0x%x\n",
- ENDPOINT_NUMBER(endp));
- return -1;
- }
-
- /* do not forward aynthing... maybe there is a packet from the bts */
- if (endp->ci == CI_UNUSED) {
- LOGP(DMGCP, LOGL_ERROR, "Unknown message on endpoint: 0x%x\n", ENDPOINT_NUMBER(endp));
- return -1;
- }
-
- /*
- * Figure out where to forward it to. This code assumes that we
- * have received the Connection Modify and know who is a legitimate
- * partner. According to the spec we could attempt to forward even
- * after the Create Connection but we will not as we are not really
- * able to tell if this is legitimate.
- */
- #warning "Slight spec violation. With connection mode recvonly we should attempt to forward."
- dest = memcmp(&addr.sin_addr, &endp->remote, sizeof(addr.sin_addr)) == 0 &&
- (endp->net_rtp == addr.sin_port || endp->net_rtcp == addr.sin_port)
- ? DEST_BTS : DEST_NETWORK;
- proto = fd == &endp->local_rtp ? PROTO_RTP : PROTO_RTCP;
-
- /* We have no idea who called us, maybe it is the BTS. */
- if (dest == DEST_NETWORK && (endp->bts_rtp == 0 || forward_ip)) {
- /* it was the BTS... */
- if (!bts_ip || memcmp(&addr.sin_addr, &bts_in, sizeof(bts_in)) == 0) {
- if (fd == &endp->local_rtp) {
- endp->bts_rtp = addr.sin_port;
- } else {
- endp->bts_rtcp = addr.sin_port;
- }
-
- endp->bts = addr.sin_addr;
- LOGP(DMGCP, LOGL_NOTICE, "Found BTS for endpoint: 0x%x on port: %d/%d\n",
- ENDPOINT_NUMBER(endp), ntohs(endp->bts_rtp), ntohs(endp->bts_rtcp));
- }
- }
-
- /* dispatch */
- if (audio_loop)
- dest = !dest;
-
- if (dest == DEST_NETWORK) {
- return udp_send(fd->fd, &endp->remote,
- proto == PROTO_RTP ? endp->net_rtp : endp->net_rtcp,
- buf, rc);
- } else {
- return udp_send(fd->fd, &endp->bts,
- proto == PROTO_RTP ? endp->bts_rtp : endp->bts_rtcp,
- buf, rc);
- }
-}
-
-static int create_bind(struct bsc_fd *fd, int port)
-{
- struct sockaddr_in addr;
- int on = 1;
-
- fd->fd = socket(AF_INET, SOCK_DGRAM, 0);
- if (fd->fd < 0) {
- LOGP(DMGCP, LOGL_ERROR, "Failed to create UDP port.\n");
- return -1;
- }
-
- setsockopt(fd->fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
- memset(&addr, 0, sizeof(addr));
- addr.sin_family = AF_INET;
- addr.sin_port = htons(port);
- inet_aton(source_addr, &addr.sin_addr);
-
- if (bind(fd->fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
- return -1;
- }
-
- return 0;
-}
-
-static int bind_rtp(struct mgcp_endpoint *endp)
-{
- if (create_bind(&endp->local_rtp, endp->rtp_port) != 0) {
- LOGP(DMGCP, LOGL_ERROR, "Failed to create RTP port: %s:%d on 0x%x\n",
- source_addr, endp->rtp_port, ENDPOINT_NUMBER(endp));
- goto cleanup0;
- }
-
- if (create_bind(&endp->local_rtcp, endp->rtp_port + 1) != 0) {
- LOGP(DMGCP, LOGL_ERROR, "Failed to create RTCP port: %s:%d on 0x%x\n",
- source_addr, endp->rtp_port + 1, ENDPOINT_NUMBER(endp));
- goto cleanup1;
- }
-
- endp->local_rtp.cb = rtp_data_cb;
- endp->local_rtp.data = endp;
- endp->local_rtp.when = BSC_FD_READ;
- if (bsc_register_fd(&endp->local_rtp) != 0) {
- LOGP(DMGCP, LOGL_ERROR, "Failed to register RTP port %d on 0x%x\n",
- endp->rtp_port, ENDPOINT_NUMBER(endp));
- goto cleanup2;
- }
-
- endp->local_rtcp.cb = rtp_data_cb;
- endp->local_rtcp.data = endp;
- endp->local_rtcp.when = BSC_FD_READ;
- if (bsc_register_fd(&endp->local_rtcp) != 0) {
- LOGP(DMGCP, LOGL_ERROR, "Failed to register RTCP port %d on 0x%x\n",
- endp->rtp_port + 1, ENDPOINT_NUMBER(endp));
- goto cleanup3;
- }
-
- return 0;
-
-cleanup3:
- bsc_unregister_fd(&endp->local_rtp);
-cleanup2:
- close(endp->local_rtcp.fd);
- endp->local_rtcp.fd = -1;
-cleanup1:
- close(endp->local_rtp.fd);
- endp->local_rtp.fd = -1;
-cleanup0:
- return -1;
-}
-
/*
* array of function pointers for handling various
* messages. In the future this might be binary sorted
@@ -371,7 +147,7 @@
return msg;
}
-static struct msgb *send_response_with_data(int code, const char *msg, const char *trans,
+struct msgb *mgcp_create_response_with_data(int code, const char *msg, const char *trans,
const char *data)
{
int len;
@@ -388,22 +164,23 @@
}
res->l2h = msgb_put(res, len);
- LOGP(DMGCP, LOGL_NOTICE, "Sending response: code: %d for '%s'\n", code, res->l2h);
+ LOGP(DMGCP, LOGL_DEBUG, "Sending response: code: %d for '%s'\n", code, res->l2h);
return res;
}
-static struct msgb *send_response(int code, const char *msg, const char *trans)
+static struct msgb *create_response(int code, const char *msg, const char *trans)
{
- return send_response_with_data(code, msg, trans, NULL);
+ return mgcp_create_response_with_data(code, msg, trans, NULL);
}
-static struct msgb *send_with_sdp(struct mgcp_endpoint *endp, const char *msg, const char *trans_id)
+static struct msgb *create_response_with_sdp(struct mgcp_endpoint *endp,
+ const char *msg, const char *trans_id)
{
- const char *addr = local_ip;
+ const char *addr = endp->cfg->local_ip;
char sdp_record[4096];
if (!addr)
- addr = source_addr;
+ addr = endp->cfg->source_addr;
snprintf(sdp_record, sizeof(sdp_record) - 1,
"I: %d\n\n"
@@ -412,8 +189,9 @@
"m=audio %d RTP/AVP %d\r\n"
"a=rtpmap:%d %s\r\n",
endp->ci, addr, endp->rtp_port,
- audio_payload, audio_payload, audio_name);
- return send_response_with_data(200, msg, trans_id, sdp_record);
+ endp->bts_payload_type, endp->bts_payload_type,
+ endp->cfg->audio_name);
+ return mgcp_create_response_with_data(200, msg, trans_id, sdp_record);
}
/* send a static record */
@@ -438,7 +216,7 @@
* - this can be a command (four letters, space, transaction id)
* - or a response (three numbers, space, transaction id)
*/
-struct msgb *mgcp_handle_message(struct msgb *msg)
+struct msgb *mgcp_handle_message(struct mgcp_config *cfg, struct msgb *msg)
{
int code;
struct msgb *resp = NULL;
@@ -450,14 +228,14 @@
/* attempt to treat it as a response */
if (sscanf((const char *)&msg->data[0], "%3d %*s", &code) == 1) {
- LOGP(DMGCP, LOGL_NOTICE, "Response: Code: %d\n", code);
+ LOGP(DMGCP, LOGL_DEBUG, "Response: Code: %d\n", code);
} else {
int i, handled = 0;
msg->l3h = &msg->l2h[4];
for (i = 0; i < ARRAY_SIZE(mgcp_requests); ++i)
if (strncmp(mgcp_requests[i].name, (const char *) &msg->data[0], 4) == 0) {
handled = 1;
- resp = mgcp_requests[i].handle_request(msg);
+ resp = mgcp_requests[i].handle_request(cfg, msg);
break;
}
if (!handled) {
@@ -504,25 +282,28 @@
return found;
}
-static struct mgcp_endpoint *find_endpoint(const char *mgcp)
+static struct mgcp_endpoint *find_endpoint(struct mgcp_config *cfg, const char *mgcp)
{
char *endptr = NULL;
unsigned int gw = INT_MAX;
gw = strtoul(mgcp, &endptr, 16);
- if (gw == 0 || gw >= number_endpoints || strcmp(endptr, "@mgw") != 0) {
+ if (gw == 0 || gw >= cfg->number_endpoints || strcmp(endptr, "@mgw") != 0) {
LOGP(DMGCP, LOGL_ERROR, "Not able to find endpoint: '%s'\n", mgcp);
return NULL;
}
- return &endpoints[gw];
+ return &cfg->endpoints[gw];
}
-static int analyze_header(struct msgb *msg, struct mgcp_msg_ptr *ptr, int size,
+static int analyze_header(struct mgcp_config *cfg, struct msgb *msg,
+ struct mgcp_msg_ptr *ptr, int size,
const char **transaction_id, struct mgcp_endpoint **endp)
{
int found;
+ *transaction_id = "000000";
+
if (size < 3) {
LOGP(DMGCP, LOGL_ERROR, "Not enough space in ptr\n");
return -1;
@@ -530,7 +311,7 @@
found = find_msg_pointers(msg, ptr, size);
- if (found < 3) {
+ if (found <= 3) {
LOGP(DMGCP, LOGL_ERROR, "Gateway: Not enough params. Found: %d\n", found);
return -1;
}
@@ -553,7 +334,7 @@
}
*transaction_id = (const char *)&msg->l3h[ptr[0].start];
- *endp = find_endpoint((const char *)&msg->l3h[ptr[1].start]);
+ *endp = find_endpoint(cfg, (const char *)&msg->l3h[ptr[1].start]);
return *endp == NULL;
}
@@ -581,20 +362,20 @@
return 0;
}
-static struct msgb *handle_audit_endpoint(struct msgb *msg)
+static struct msgb *handle_audit_endpoint(struct mgcp_config *cfg, struct msgb *msg)
{
struct mgcp_msg_ptr data_ptrs[6];
int found, response;
const char *trans_id;
struct mgcp_endpoint *endp;
- found = analyze_header(msg, data_ptrs, ARRAY_SIZE(data_ptrs), &trans_id, &endp);
+ found = analyze_header(cfg, msg, data_ptrs, ARRAY_SIZE(data_ptrs), &trans_id, &endp);
if (found != 0)
response = 500;
else
response = 200;
- return send_response(response, "AUEP", trans_id);
+ return create_response(response, "AUEP", trans_id);
}
static int parse_conn_mode(const char* msg, int *conn_mode)
@@ -612,32 +393,33 @@
return ret;
}
-static struct msgb *handle_create_con(struct msgb *msg)
+static struct msgb *handle_create_con(struct mgcp_config *cfg, struct msgb *msg)
{
struct mgcp_msg_ptr data_ptrs[6];
int found, i, line_start;
const char *trans_id;
struct mgcp_endpoint *endp;
int error_code = 500;
+ int port;
- found = analyze_header(msg, data_ptrs, ARRAY_SIZE(data_ptrs), &trans_id, &endp);
+ found = analyze_header(cfg, msg, data_ptrs, ARRAY_SIZE(data_ptrs), &trans_id, &endp);
if (found != 0)
- return send_response(500, "CRCX", trans_id);
+ return create_response(500, "CRCX", trans_id);
if (endp->ci != CI_UNUSED) {
LOGP(DMGCP, LOGL_ERROR, "Endpoint is already used. 0x%x\n", ENDPOINT_NUMBER(endp));
- return send_response(500, "CRCX", trans_id);
+ return create_response(500, "CRCX", trans_id);
}
/* parse CallID C: and LocalParameters L: */
MSG_TOKENIZE_START
switch (msg->l3h[line_start]) {
case 'L':
- endp->local_options = talloc_strdup(endpoints,
+ endp->local_options = talloc_strdup(cfg->endpoints,
(const char *)&msg->l3h[line_start + 3]);
break;
case 'C':
- endp->callid = talloc_strdup(endpoints,
+ endp->callid = talloc_strdup(cfg->endpoints,
(const char *)&msg->l3h[line_start + 3]);
break;
case 'M':
@@ -662,33 +444,56 @@
memset(&endp->remote, 0, sizeof(endp->remote));
/* bind to the port now */
- endp->rtp_port = rtp_calculate_port(ENDPOINT_NUMBER(endp), rtp_base_port);
- if (!early_bind && bind_rtp(endp) != 0)
+ port = rtp_calculate_port(ENDPOINT_NUMBER(endp), cfg->rtp_base_port);
+ if (cfg->early_bind)
+ endp->rtp_port = port;
+ else if (mgcp_bind_rtp_port(endp, port) != 0)
goto error2;
/* assign a local call identifier or fail */
- endp->ci = generate_call_id();
+ endp->ci = generate_call_id(cfg);
if (endp->ci == CI_UNUSED)
goto error2;
+ endp->bts_payload_type = cfg->audio_payload;
+
+ /* policy CB */
+ if (cfg->policy_cb) {
+ switch (cfg->policy_cb(cfg, ENDPOINT_NUMBER(endp), MGCP_ENDP_CRCX, trans_id)) {
+ case MGCP_POLICY_REJECT:
+ LOGP(DMGCP, LOGL_NOTICE, "CRCX rejected by policy on 0x%x\n",
+ ENDPOINT_NUMBER(endp));
+ mgcp_free_endp(endp);
+ return create_response(500, "CRCX", trans_id);
+ break;
+ case MGCP_POLICY_DEFER:
+ /* stop processing */
+ return NULL;
+ break;
+ case MGCP_POLICY_CONT:
+ /* just continue */
+ break;
+ }
+ }
+
LOGP(DMGCP, LOGL_NOTICE, "Creating endpoint on: 0x%x CI: %u port: %u\n",
ENDPOINT_NUMBER(endp), endp->ci, endp->rtp_port);
- if (change_cb)
- change_cb(ENDPOINT_NUMBER(endp), MGCP_ENDP_CRCX, endp->rtp_port, change_cb_data);
+ if (cfg->change_cb)
+ cfg->change_cb(cfg, ENDPOINT_NUMBER(endp), MGCP_ENDP_CRCX, endp->rtp_port);
- return send_with_sdp(endp, "CRCX", trans_id);
+ return create_response_with_sdp(endp, "CRCX", trans_id);
error:
LOGP(DMGCP, LOGL_ERROR, "Malformed line: %s on 0x%x with: line_start: %d %d\n",
hexdump(msg->l3h, msgb_l3len(msg)),
ENDPOINT_NUMBER(endp), line_start, i);
- return send_response(error_code, "CRCX", trans_id);
+ return create_response(error_code, "CRCX", trans_id);
error2:
LOGP(DMGCP, LOGL_NOTICE, "Resource error on 0x%x\n", ENDPOINT_NUMBER(endp));
- return send_response(error_code, "CRCX", trans_id);
+ return create_response(error_code, "CRCX", trans_id);
}
-static struct msgb *handle_modify_con(struct msgb *msg)
+static struct msgb *handle_modify_con(struct mgcp_config *cfg, struct msgb *msg)
{
struct mgcp_msg_ptr data_ptrs[6];
int found, i, line_start;
@@ -696,13 +501,13 @@
struct mgcp_endpoint *endp;
int error_code = 500;
- found = analyze_header(msg, data_ptrs, ARRAY_SIZE(data_ptrs), &trans_id, &endp);
+ found = analyze_header(cfg, msg, data_ptrs, ARRAY_SIZE(data_ptrs), &trans_id, &endp);
if (found != 0)
- return send_response(error_code, "MDCX", trans_id);
+ return create_response(error_code, "MDCX", trans_id);
if (endp->ci == CI_UNUSED) {
LOGP(DMGCP, LOGL_ERROR, "Endpoint is not holding a connection. 0x%x\n", ENDPOINT_NUMBER(endp));
- return send_response(error_code, "MDCX", trans_id);
+ return create_response(error_code, "MDCX", trans_id);
}
MSG_TOKENIZE_START
@@ -739,11 +544,13 @@
break;
case 'm': {
int port;
+ int payload;
const char *param = (const char *)&msg->l3h[line_start];
- if (sscanf(param, "m=audio %d RTP/AVP %*d", &port) == 1) {
+ if (sscanf(param, "m=audio %d RTP/AVP %d", &port, &payload) == 2) {
endp->net_rtp = htons(port);
endp->net_rtcp = htons(port + 1);
+ endp->net_payload_type = payload;
}
break;
}
@@ -764,24 +571,42 @@
}
MSG_TOKENIZE_END
+ /* policy CB */
+ if (cfg->policy_cb) {
+ switch (cfg->policy_cb(cfg, ENDPOINT_NUMBER(endp), MGCP_ENDP_MDCX, trans_id)) {
+ case MGCP_POLICY_REJECT:
+ LOGP(DMGCP, LOGL_NOTICE, "MDCX rejected by policy on 0x%x\n",
+ ENDPOINT_NUMBER(endp));
+ return create_response(500, "MDCX", trans_id);
+ break;
+ case MGCP_POLICY_DEFER:
+ /* stop processing */
+ return NULL;
+ break;
+ case MGCP_POLICY_CONT:
+ /* just continue */
+ break;
+ }
+ }
+
/* modify */
LOGP(DMGCP, LOGL_NOTICE, "Modified endpoint on: 0x%x Server: %s:%u\n",
- ENDPOINT_NUMBER(endp), inet_ntoa(endp->remote), endp->net_rtp);
- if (change_cb)
- change_cb(ENDPOINT_NUMBER(endp), MGCP_ENDP_MDCX, endp->rtp_port, change_cb_data);
- return send_with_sdp(endp, "MDCX", trans_id);
+ ENDPOINT_NUMBER(endp), inet_ntoa(endp->remote), ntohs(endp->net_rtp));
+ if (cfg->change_cb)
+ cfg->change_cb(cfg, ENDPOINT_NUMBER(endp), MGCP_ENDP_MDCX, endp->rtp_port);
+ return create_response_with_sdp(endp, "MDCX", trans_id);
error:
LOGP(DMGCP, LOGL_ERROR, "Malformed line: %s on 0x%x with: line_start: %d %d %d\n",
hexdump(msg->l3h, msgb_l3len(msg)),
ENDPOINT_NUMBER(endp), line_start, i, msg->l3h[line_start]);
- return send_response(error_code, "MDCX", trans_id);
+ return create_response(error_code, "MDCX", trans_id);
error3:
- return send_response(error_code, "MDCX", trans_id);
+ return create_response(error_code, "MDCX", trans_id);
}
-static struct msgb *handle_delete_con(struct msgb *msg)
+static struct msgb *handle_delete_con(struct mgcp_config *cfg, struct msgb *msg)
{
struct mgcp_msg_ptr data_ptrs[6];
int found, i, line_start;
@@ -789,13 +614,13 @@
struct mgcp_endpoint *endp;
int error_code = 500;
- found = analyze_header(msg, data_ptrs, ARRAY_SIZE(data_ptrs), &trans_id, &endp);
+ found = analyze_header(cfg, msg, data_ptrs, ARRAY_SIZE(data_ptrs), &trans_id, &endp);
if (found != 0)
- return send_response(error_code, "DLCX", trans_id);
+ return create_response(error_code, "DLCX", trans_id);
if (endp->ci == CI_UNUSED) {
LOGP(DMGCP, LOGL_ERROR, "Endpoint is not used. 0x%x\n", ENDPOINT_NUMBER(endp));
- return send_response(error_code, "DLCX", trans_id);
+ return create_response(error_code, "DLCX", trans_id);
}
MSG_TOKENIZE_START
@@ -818,327 +643,103 @@
}
MSG_TOKENIZE_END
-
- /* free the connection */
- LOGP(DMGCP, LOGL_NOTICE, "Deleting endpoint on: 0x%x\n", ENDPOINT_NUMBER(endp));
- endp->ci= CI_UNUSED;
- talloc_free(endp->callid);
- talloc_free(endp->local_options);
-
- if (!early_bind) {
- bsc_unregister_fd(&endp->local_rtp);
- bsc_unregister_fd(&endp->local_rtcp);
+ /* policy CB */
+ if (cfg->policy_cb) {
+ switch (cfg->policy_cb(cfg, ENDPOINT_NUMBER(endp), MGCP_ENDP_DLCX, trans_id)) {
+ case MGCP_POLICY_REJECT:
+ LOGP(DMGCP, LOGL_NOTICE, "DLCX rejected by policy on 0x%x\n",
+ ENDPOINT_NUMBER(endp));
+ return create_response(500, "DLCX", trans_id);
+ break;
+ case MGCP_POLICY_DEFER:
+ /* stop processing */
+ return NULL;
+ break;
+ case MGCP_POLICY_CONT:
+ /* just continue */
+ break;
+ }
}
- endp->net_rtp = endp->net_rtcp = endp->bts_rtp = endp->bts_rtcp = 0;
- if (change_cb)
- change_cb(ENDPOINT_NUMBER(endp), MGCP_ENDP_DLCX, endp->rtp_port, change_cb_data);
+ /* free the connection */
+ mgcp_free_endp(endp);
+ if (cfg->change_cb)
+ cfg->change_cb(cfg, ENDPOINT_NUMBER(endp), MGCP_ENDP_DLCX, endp->rtp_port);
- return send_response(250, "DLCX", trans_id);
+ return create_response(250, "DLCX", trans_id);
error:
LOGP(DMGCP, LOGL_ERROR, "Malformed line: %s on 0x%x with: line_start: %d %d\n",
hexdump(msg->l3h, msgb_l3len(msg)),
ENDPOINT_NUMBER(endp), line_start, i);
- return send_response(error_code, "DLCX", trans_id);
+ return create_response(error_code, "DLCX", trans_id);
error3:
- return send_response(error_code, "DLCX", trans_id);
+ return create_response(error_code, "DLCX", trans_id);
}
-/*
- * vty code for mgcp below
- */
-struct cmd_node mgcp_node = {
- MGCP_NODE,
- "%s(mgcp)#",
- 1,
-};
-
-static int config_write_mgcp(struct vty *vty)
+struct mgcp_config *mgcp_config_alloc(void)
{
- vty_out(vty, "mgcp%s", VTY_NEWLINE);
- if (local_ip)
- vty_out(vty, " local ip %s%s", local_ip, VTY_NEWLINE);
- if (bts_ip)
- vty_out(vty, " bts ip %s%s", bts_ip, VTY_NEWLINE);
- vty_out(vty, " bind ip %s%s", source_addr, VTY_NEWLINE);
- vty_out(vty, " bind port %u%s", source_port, VTY_NEWLINE);
- vty_out(vty, " bind early %u%s", !!early_bind, VTY_NEWLINE);
- vty_out(vty, " rtp base %u%s", rtp_base_port, VTY_NEWLINE);
- vty_out(vty, " sdp audio payload number %u%s", audio_payload, VTY_NEWLINE);
- vty_out(vty, " sdp audio payload name %s%s", audio_name, VTY_NEWLINE);
- vty_out(vty, " loop %u%s", !!audio_loop, VTY_NEWLINE);
- vty_out(vty, " endpoints %u%s", number_endpoints, VTY_NEWLINE);
- if (forward_ip)
- vty_out(vty, " forward audio ip %s%s", forward_ip, VTY_NEWLINE);
- if (forward_port != 0)
- vty_out(vty, " forward audio port %d%s", forward_port, VTY_NEWLINE);
+ struct mgcp_config *cfg;
- return CMD_SUCCESS;
+ cfg = talloc_zero(NULL, struct mgcp_config);
+ if (!cfg) {
+ LOGP(DMGCP, LOGL_FATAL, "Failed to allocate config.\n");
+ return NULL;
+ }
+
+ cfg->source_port = 2427;
+ cfg->source_addr = talloc_strdup(cfg, "0.0.0.0");
+ cfg->audio_name = talloc_strdup(cfg, "GSM-EFR/8000");
+ cfg->audio_payload = 97;
+ cfg->rtp_base_port = RTP_PORT_DEFAULT;
+
+ return cfg;
}
-DEFUN(show_mcgp, show_mgcp_cmd, "show mgcp",
- SHOW_STR "Display information about the MGCP Media Gateway")
+int mgcp_endpoints_allocate(struct mgcp_config *cfg)
{
int i;
- vty_out(vty, "MGCP is up and running with %u endpoints:%s", number_endpoints - 1, VTY_NEWLINE);
- for (i = 1; i < number_endpoints; ++i) {
- struct mgcp_endpoint *endp = &endpoints[i];
- vty_out(vty, " Endpoint 0x%.2x: CI: %d net: %u/%u bts: %u/%u%s",
- i, endp->ci,
- ntohs(endp->net_rtp), ntohs(endp->net_rtcp),
- ntohs(endp->bts_rtp), ntohs(endp->bts_rtcp), VTY_NEWLINE);
+ /* Initialize all endpoints */
+ cfg->endpoints = _talloc_zero_array(cfg,
+ sizeof(struct mgcp_endpoint),
+ cfg->number_endpoints, "endpoints");
+ if (!cfg->endpoints)
+ return -1;
+
+ for (i = 0; i < cfg->number_endpoints; ++i) {
+ cfg->endpoints[i].local_rtp.fd = -1;
+ cfg->endpoints[i].local_rtcp.fd = -1;
+ cfg->endpoints[i].ci = CI_UNUSED;
+ cfg->endpoints[i].cfg = cfg;
+ cfg->endpoints[i].net_payload_type = -1;
+ cfg->endpoints[i].bts_payload_type = -1;
}
- return CMD_SUCCESS;
-}
-
-DEFUN(cfg_mgcp,
- cfg_mgcp_cmd,
- "mgcp",
- "Configure the MGCP")
-{
- vty->node = MGCP_NODE;
- return CMD_SUCCESS;
-}
-
-DEFUN(cfg_mgcp_local_ip,
- cfg_mgcp_local_ip_cmd,
- "local ip IP",
- "Set the IP to be used in SDP records")
-{
- local_ip = talloc_strdup(tall_bsc_ctx, argv[0]);
- return CMD_SUCCESS;
-}
-
-DEFUN(cfg_mgcp_bts_ip,
- cfg_mgcp_bts_ip_cmd,
- "bts ip IP",
- "Set the IP of the BTS for RTP forwarding")
-{
- bts_ip = talloc_strdup(tall_bsc_ctx, argv[0]);
- inet_aton(bts_ip, &bts_in);
- return CMD_SUCCESS;
-}
-
-DEFUN(cfg_mgcp_bind_ip,
- cfg_mgcp_bind_ip_cmd,
- "bind ip IP",
- "Bind the MGCP to this local addr")
-{
- source_addr = talloc_strdup(tall_bsc_ctx, argv[0]);
- return CMD_SUCCESS;
-}
-
-DEFUN(cfg_mgcp_bind_port,
- cfg_mgcp_bind_port_cmd,
- "bind port <0-65534>",
- "Bind the MGCP to this port")
-{
- unsigned int port = atoi(argv[0]);
- if (port > 65534) {
- vty_out(vty, "%% wrong bind port '%s'%s", argv[0], VTY_NEWLINE);
- return CMD_WARNING;
- }
-
- source_port = port;
- return CMD_SUCCESS;
-}
-
-DEFUN(cfg_mgcp_bind_early,
- cfg_mgcp_bind_early_cmd,
- "bind early (0|1)",
- "Bind all RTP ports early")
-{
- unsigned int bind = atoi(argv[0]);
- if (bind != 0 && bind != 1) {
- vty_out(vty, "%% param must be 0 or 1.%s", VTY_NEWLINE);
- return CMD_WARNING;
- }
-
- early_bind = bind == 1;
- return CMD_SUCCESS;
-}
-
-DEFUN(cfg_mgcp_rtp_base_port,
- cfg_mgcp_rtp_base_port_cmd,
- "rtp base <0-65534>",
- "Base port to use")
-{
- unsigned int port = atoi(argv[0]);
- if (port > 65534) {
- vty_out(vty, "%% wrong base port '%s'%s", argv[0], VTY_NEWLINE);
- return CMD_WARNING;
- }
-
- rtp_base_port = port;
- return CMD_SUCCESS;
-}
-
-DEFUN(cfg_mgcp_sdp_payload_number,
- cfg_mgcp_sdp_payload_number_cmd,
- "sdp audio payload number <1-255>",
- "Set the audio codec to use")
-{
- unsigned int payload = atoi(argv[0]);
- if (payload > 255) {
- vty_out(vty, "%% wrong payload number '%s'%s", argv[0], VTY_NEWLINE);
- return CMD_WARNING;
- }
-
- audio_payload = payload;
- return CMD_SUCCESS;
-}
-
-DEFUN(cfg_mgcp_sdp_payload_name,
- cfg_mgcp_sdp_payload_name_cmd,
- "sdp audio payload name NAME",
- "Set the audio name to use")
-{
- audio_name = talloc_strdup(tall_bsc_ctx, argv[0]);
- return CMD_SUCCESS;
-}
-
-DEFUN(cfg_mgcp_loop,
- cfg_mgcp_loop_cmd,
- "loop (0|1)",
- "Loop the audio")
-{
- audio_loop = atoi(argv[0]);
- return CMD_SUCCESS;
-}
-
-DEFUN(cfg_mgcp_number_endp,
- cfg_mgcp_number_endp_cmd,
- "number endpoints <0-65534>",
- "The number of endpoints to allocate. This is not dynamic.")
-{
- /* + 1 as we start counting at one */
- number_endpoints = atoi(argv[0]) + 1;
- return CMD_SUCCESS;
-}
-
-DEFUN(cfg_mgcp_forward_ip,
- cfg_mgcp_forward_ip_cmd,
- "forward audio ip IP",
- "Forward packets from and to the IP. This disables most of the MGCP feature.")
-{
- if (forward_ip)
- talloc_free(forward_ip);
- forward_ip = talloc_strdup(tall_bsc_ctx, argv[0]);
- return CMD_SUCCESS;
-}
-
-DEFUN(cfg_mgcp_forward_port,
- cfg_mgcp_forward_port_cmd,
- "forward audio port <1-15000>",
- "Forward packets from and to the port. This disables most of the MGCP feature.")
-{
- forward_port = atoi(argv[0]);
- return CMD_SUCCESS;
-}
-
-int mgcp_vty_init(void)
-{
- install_element(VIEW_NODE, &show_mgcp_cmd);
-
- install_element(CONFIG_NODE, &cfg_mgcp_cmd);
- install_node(&mgcp_node, config_write_mgcp);
- install_default(MGCP_NODE);
- install_element(MGCP_NODE, &cfg_mgcp_local_ip_cmd);
- install_element(MGCP_NODE, &cfg_mgcp_bts_ip_cmd);
- install_element(MGCP_NODE, &cfg_mgcp_bind_ip_cmd);
- install_element(MGCP_NODE, &cfg_mgcp_bind_port_cmd);
- install_element(MGCP_NODE, &cfg_mgcp_bind_early_cmd);
- install_element(MGCP_NODE, &cfg_mgcp_rtp_base_port_cmd);
- install_element(MGCP_NODE, &cfg_mgcp_sdp_payload_number_cmd);
- install_element(MGCP_NODE, &cfg_mgcp_sdp_payload_name_cmd);
- install_element(MGCP_NODE, &cfg_mgcp_loop_cmd);
- install_element(MGCP_NODE, &cfg_mgcp_number_endp_cmd);
- install_element(MGCP_NODE, &cfg_mgcp_forward_ip_cmd);
- install_element(MGCP_NODE, &cfg_mgcp_forward_port_cmd);
return 0;
}
-int mgcp_parse_config(const char *config_file, struct gsm_network *dummy_network)
+void mgcp_free_endp(struct mgcp_endpoint *endp)
{
- int i, rc;
+ LOGP(DMGCP, LOGL_NOTICE, "Deleting endpoint on: 0x%x\n", ENDPOINT_NUMBER(endp));
+ endp->ci= CI_UNUSED;
- rc = vty_read_config_file(config_file);
- if (rc < 0) {
- fprintf(stderr, "Failed to parse the config file: '%s'\n", config_file);
- return rc;
+ if (endp->callid) {
+ talloc_free(endp->callid);
+ endp->callid = NULL;
}
-
- if (!bts_ip)
- fprintf(stderr, "No BTS ip address specified. This will allow everyone to connect.\n");
-
- endpoints = _talloc_zero_array(tall_bsc_ctx,
- sizeof(struct mgcp_endpoint),
- number_endpoints, "endpoints");
- if (!endpoints) {
- fprintf(stderr, "Failed to allocate endpoints: %d. Quitting.\n", number_endpoints);
- return -1;
+ if (endp->local_options) {
+ talloc_free(endp->local_options);
+ endp->callid = NULL;
}
- /* Initialize all endpoints */
- for (i = 0; i < number_endpoints; ++i) {
- endpoints[i].local_rtp.fd = -1;
- endpoints[i].local_rtcp.fd = -1;
- endpoints[i].ci = CI_UNUSED;
+ if (!endp->cfg->early_bind) {
+ bsc_unregister_fd(&endp->local_rtp);
+ bsc_unregister_fd(&endp->local_rtcp);
}
- /*
- * This application supports two modes.
- * 1.) a true MGCP gateway with support for AUEP, CRCX, MDCX, DLCX
- * 2.) plain forwarding of RTP packets on the endpoints.
- * both modes are mutual exclusive
- */
- if (forward_ip) {
- int port = rtp_base_port;
- if (forward_port != 0)
- port = forward_port;
-
- if (!early_bind) {
- LOGP(DMGCP, LOGL_NOTICE, "Forwarding requires early bind.\n");
- return -1;
- }
-
- /*
- * Store the forward IP and assign a ci. For early bind
- * the sockets will be created after this.
- */
- for (i = 1; i < number_endpoints; ++i) {
- struct mgcp_endpoint *endp = &endpoints[i];
- inet_aton(forward_ip, &endp->remote);
- endp->ci = CI_UNUSED + 23;
- endp->net_rtp = htons(rtp_calculate_port(ENDPOINT_NUMBER(endp), port));
- endp->net_rtcp = htons(rtp_calculate_port(ENDPOINT_NUMBER(endp), port) + 1);
- }
-
- LOGP(DMGCP, LOGL_NOTICE, "Configured for Audio Forwarding.\n");
- }
-
- /* early bind */
- if (early_bind) {
- for (i = 1; i < number_endpoints; ++i) {
- struct mgcp_endpoint *endp = &endpoints[i];
- endp->rtp_port = rtp_calculate_port(ENDPOINT_NUMBER(endp), rtp_base_port);
- if (bind_rtp(endp) != 0) {
- LOGP(DMGCP, LOGL_FATAL, "Failed to bind: %d\n", endp->rtp_port);
- return -1;
- }
- }
- }
-
- return !!forward_ip;
-}
-
-void mgcp_set_change_cb(mgcp_change cb, void *data)
-{
- change_cb = cb;
- change_cb_data = data;
+ endp->net_rtp = endp->net_rtcp = endp->bts_rtp = endp->bts_rtcp = 0;
+ endp->net_payload_type = endp->bts_payload_type = -1;
}
diff --git a/openbsc/src/mgcp/mgcp_vty.c b/openbsc/src/mgcp/mgcp_vty.c
new file mode 100644
index 0000000..f13b3cf
--- /dev/null
+++ b/openbsc/src/mgcp/mgcp_vty.c
@@ -0,0 +1,339 @@
+/* A Media Gateway Control Protocol Media Gateway: RFC 3435 */
+/* The protocol implementation */
+
+/*
+ * (C) 2009-2010 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2009-2010 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 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 <sys/types.h>
+
+#include <osmocore/talloc.h>
+
+#include <openbsc/debug.h>
+#include <openbsc/mgcp.h>
+#include <openbsc/mgcp_internal.h>
+
+#include <vty/command.h>
+#include <vty/vty.h>
+
+static struct mgcp_config *g_cfg = NULL;
+
+/*
+ * vty code for mgcp below
+ */
+struct cmd_node mgcp_node = {
+ MGCP_NODE,
+ "%s(mgcp)#",
+ 1,
+};
+
+static int config_write_mgcp(struct vty *vty)
+{
+ vty_out(vty, "mgcp%s", VTY_NEWLINE);
+ if (g_cfg->local_ip)
+ vty_out(vty, " local ip %s%s", g_cfg->local_ip, VTY_NEWLINE);
+ if (g_cfg->bts_ip)
+ vty_out(vty, " bts ip %s%s", g_cfg->bts_ip, VTY_NEWLINE);
+ vty_out(vty, " bind ip %s%s", g_cfg->source_addr, VTY_NEWLINE);
+ vty_out(vty, " bind port %u%s", g_cfg->source_port, VTY_NEWLINE);
+ vty_out(vty, " bind early %u%s", !!g_cfg->early_bind, VTY_NEWLINE);
+ vty_out(vty, " rtp base %u%s", g_cfg->rtp_base_port, VTY_NEWLINE);
+ vty_out(vty, " sdp audio payload number %u%s", g_cfg->audio_payload, VTY_NEWLINE);
+ vty_out(vty, " sdp audio payload name %s%s", g_cfg->audio_name, VTY_NEWLINE);
+ vty_out(vty, " loop %u%s", !!g_cfg->audio_loop, VTY_NEWLINE);
+ vty_out(vty, " endpoints %u%s", g_cfg->number_endpoints, VTY_NEWLINE);
+ if (g_cfg->forward_ip)
+ vty_out(vty, " forward audio ip %s%s", g_cfg->forward_ip, VTY_NEWLINE);
+ if (g_cfg->forward_port != 0)
+ vty_out(vty, " forward audio port %d%s", g_cfg->forward_port, VTY_NEWLINE);
+
+ return CMD_SUCCESS;
+}
+
+DEFUN(show_mcgp, show_mgcp_cmd, "show mgcp",
+ SHOW_STR "Display information about the MGCP Media Gateway")
+{
+ int i;
+
+ vty_out(vty, "MGCP is up and running with %u endpoints:%s", g_cfg->number_endpoints - 1, VTY_NEWLINE);
+ for (i = 1; i < g_cfg->number_endpoints; ++i) {
+ struct mgcp_endpoint *endp = &g_cfg->endpoints[i];
+ vty_out(vty, " Endpoint 0x%.2x: CI: %d net: %u/%u bts: %u/%u%s",
+ i, endp->ci,
+ ntohs(endp->net_rtp), ntohs(endp->net_rtcp),
+ ntohs(endp->bts_rtp), ntohs(endp->bts_rtcp), VTY_NEWLINE);
+ }
+
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp,
+ cfg_mgcp_cmd,
+ "mgcp",
+ "Configure the MGCP")
+{
+ vty->node = MGCP_NODE;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_local_ip,
+ cfg_mgcp_local_ip_cmd,
+ "local ip IP",
+ "Set the IP to be used in SDP records")
+{
+ if (g_cfg->local_ip)
+ talloc_free(g_cfg->local_ip);
+ g_cfg->local_ip = talloc_strdup(g_cfg, argv[0]);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_bts_ip,
+ cfg_mgcp_bts_ip_cmd,
+ "bts ip IP",
+ "Set the IP of the BTS for RTP forwarding")
+{
+ if (g_cfg->bts_ip)
+ talloc_free(g_cfg->bts_ip);
+ g_cfg->bts_ip = talloc_strdup(g_cfg, argv[0]);
+ inet_aton(g_cfg->bts_ip, &g_cfg->bts_in);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_bind_ip,
+ cfg_mgcp_bind_ip_cmd,
+ "bind ip IP",
+ "Bind the MGCP to this local addr")
+{
+ if (g_cfg->source_addr)
+ talloc_free(g_cfg->source_addr);
+ g_cfg->source_addr = talloc_strdup(g_cfg, argv[0]);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_bind_port,
+ cfg_mgcp_bind_port_cmd,
+ "bind port <0-65534>",
+ "Bind the MGCP to this port")
+{
+ unsigned int port = atoi(argv[0]);
+ if (port > 65534) {
+ vty_out(vty, "%% wrong bind port '%s'%s", argv[0], VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ g_cfg->source_port = port;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_bind_early,
+ cfg_mgcp_bind_early_cmd,
+ "bind early (0|1)",
+ "Bind all RTP ports early")
+{
+ unsigned int bind = atoi(argv[0]);
+ if (bind != 0 && bind != 1) {
+ vty_out(vty, "%% param must be 0 or 1.%s", VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ g_cfg->early_bind = bind == 1;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_rtp_base_port,
+ cfg_mgcp_rtp_base_port_cmd,
+ "rtp base <0-65534>",
+ "Base port to use")
+{
+ unsigned int port = atoi(argv[0]);
+ if (port > 65534) {
+ vty_out(vty, "%% wrong base port '%s'%s", argv[0], VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ g_cfg->rtp_base_port = port;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_sdp_payload_number,
+ cfg_mgcp_sdp_payload_number_cmd,
+ "sdp audio payload number <1-255>",
+ "Set the audio codec to use")
+{
+ unsigned int payload = atoi(argv[0]);
+ if (payload > 255) {
+ vty_out(vty, "%% wrong payload number '%s'%s", argv[0], VTY_NEWLINE);
+ return CMD_WARNING;
+ }
+
+ g_cfg->audio_payload = payload;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_sdp_payload_name,
+ cfg_mgcp_sdp_payload_name_cmd,
+ "sdp audio payload name NAME",
+ "Set the audio name to use")
+{
+ if (g_cfg->audio_name)
+ talloc_free(g_cfg->audio_name);
+ g_cfg->audio_name = talloc_strdup(g_cfg, argv[0]);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_loop,
+ cfg_mgcp_loop_cmd,
+ "loop (0|1)",
+ "Loop the audio")
+{
+ g_cfg->audio_loop = atoi(argv[0]);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_number_endp,
+ cfg_mgcp_number_endp_cmd,
+ "number endpoints <0-65534>",
+ "The number of endpoints to allocate. This is not dynamic.")
+{
+ /* + 1 as we start counting at one */
+ g_cfg->number_endpoints = atoi(argv[0]) + 1;
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_forward_ip,
+ cfg_mgcp_forward_ip_cmd,
+ "forward audio ip IP",
+ "Forward packets from and to the IP. This disables most of the MGCP feature.")
+{
+ if (g_cfg->forward_ip)
+ talloc_free(g_cfg->forward_ip);
+ g_cfg->forward_ip = talloc_strdup(g_cfg, argv[0]);
+ return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_forward_port,
+ cfg_mgcp_forward_port_cmd,
+ "forward audio port <1-15000>",
+ "Forward packets from and to the port. This disables most of the MGCP feature.")
+{
+ g_cfg->forward_port = atoi(argv[0]);
+ return CMD_SUCCESS;
+}
+
+int mgcp_vty_init(void)
+{
+ install_element(VIEW_NODE, &show_mgcp_cmd);
+
+ install_element(CONFIG_NODE, &cfg_mgcp_cmd);
+ install_node(&mgcp_node, config_write_mgcp);
+ install_default(MGCP_NODE);
+ install_element(MGCP_NODE, &cfg_mgcp_local_ip_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_bts_ip_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_bind_ip_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_bind_port_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_bind_early_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_rtp_base_port_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_sdp_payload_number_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_sdp_payload_name_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_loop_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_number_endp_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_forward_ip_cmd);
+ install_element(MGCP_NODE, &cfg_mgcp_forward_port_cmd);
+ return 0;
+}
+
+int mgcp_parse_config(const char *config_file, struct mgcp_config *cfg)
+{
+ int i, rc;
+
+ g_cfg = cfg;
+ rc = vty_read_config_file(config_file);
+ if (rc < 0) {
+ fprintf(stderr, "Failed to parse the config file: '%s'\n", config_file);
+ return rc;
+ }
+
+
+ if (!g_cfg->bts_ip)
+ fprintf(stderr, "No BTS ip address specified. This will allow everyone to connect.\n");
+
+ if (mgcp_endpoints_allocate(g_cfg) != 0) {
+ fprintf(stderr, "Failed to allocate endpoints: %d. Quitting.\n", g_cfg->number_endpoints);
+ return -1;
+ }
+
+ /*
+ * This application supports two modes.
+ * 1.) a true MGCP gateway with support for AUEP, CRCX, MDCX, DLCX
+ * 2.) plain forwarding of RTP packets on the endpoints.
+ * both modes are mutual exclusive
+ */
+ if (g_cfg->forward_ip) {
+ int port = g_cfg->rtp_base_port;
+ if (g_cfg->forward_port != 0)
+ port = g_cfg->forward_port;
+
+ if (!g_cfg->early_bind) {
+ LOGP(DMGCP, LOGL_NOTICE, "Forwarding requires early bind.\n");
+ return -1;
+ }
+
+ /*
+ * Store the forward IP and assign a ci. For early bind
+ * the sockets will be created after this.
+ */
+ for (i = 1; i < g_cfg->number_endpoints; ++i) {
+ struct mgcp_endpoint *endp = &g_cfg->endpoints[i];
+ inet_aton(g_cfg->forward_ip, &endp->remote);
+ endp->ci = CI_UNUSED + 23;
+ endp->net_rtp = htons(rtp_calculate_port(ENDPOINT_NUMBER(endp), port));
+ endp->net_rtcp = htons(rtp_calculate_port(ENDPOINT_NUMBER(endp), port) + 1);
+ }
+
+ LOGP(DMGCP, LOGL_NOTICE, "Configured for Audio Forwarding.\n");
+ }
+
+ /* early bind */
+ if (g_cfg->early_bind) {
+ for (i = 1; i < g_cfg->number_endpoints; ++i) {
+ struct mgcp_endpoint *endp = &g_cfg->endpoints[i];
+ int rtp_port;
+
+ rtp_port = rtp_calculate_port(ENDPOINT_NUMBER(endp), g_cfg->rtp_base_port);
+ if (mgcp_bind_rtp_port(endp, rtp_port) != 0) {
+ LOGP(DMGCP, LOGL_FATAL, "Failed to bind: %d\n", rtp_port);
+ return -1;
+ }
+ }
+ }
+
+ return !!g_cfg->forward_ip;
+}
+
+struct gsm_network;
+int bsc_vty_init(struct gsm_network *dummy)
+{
+ cmd_init(1);
+ vty_init();
+
+ mgcp_vty_init();
+ return 0;
+}
+