[mgcp] Move away from global variables and split out VTY code
In separation of using the MGCP parsing in another context, refactor
the code to operate on a struct mgcp_config, split out the vty code
from the mgcp_protocol.c, and move the callbacks into the mgcp code.
There should be no functional changes.
diff --git a/openbsc/src/mgcp/mgcp_protocol.c b/openbsc/src/mgcp/mgcp_protocol.c
index 53573f3..8adc4c7 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
@@ -39,27 +39,10 @@
#include <openbsc/gsm_data.h>
#include <openbsc/select.h>
#include <openbsc/mgcp.h>
-#include <openbsc/telnet_interface.h>
-
-#include <vty/command.h>
-#include <vty/vty.h>
+#include <openbsc/mgcp_internal.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;
-
enum mgcp_connection_mode {
MGCP_CONN_NONE = 0,
MGCP_CONN_RECV_ONLY = 1,
@@ -77,37 +60,6 @@
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 +102,36 @@
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 */
@@ -217,9 +166,11 @@
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);
@@ -249,9 +200,9 @@
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)) {
+ if (dest == DEST_NETWORK && (endp->bts_rtp == 0 || cfg->forward_ip)) {
/* it was the BTS... */
- if (!bts_ip || memcmp(&addr.sin_addr, &bts_in, sizeof(bts_in)) == 0) {
+ 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 {
@@ -265,7 +216,7 @@
}
/* dispatch */
- if (audio_loop)
+ if (cfg->audio_loop)
dest = !dest;
if (dest == DEST_NETWORK) {
@@ -279,7 +230,7 @@
}
}
-static int create_bind(struct bsc_fd *fd, int port)
+static int create_bind(const char *source_addr, struct bsc_fd *fd, int port)
{
struct sockaddr_in addr;
int on = 1;
@@ -305,15 +256,17 @@
static int bind_rtp(struct mgcp_endpoint *endp)
{
- if (create_bind(&endp->local_rtp, endp->rtp_port) != 0) {
+ 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",
- source_addr, endp->rtp_port, ENDPOINT_NUMBER(endp));
+ cfg->source_addr, endp->rtp_port, ENDPOINT_NUMBER(endp));
goto cleanup0;
}
- if (create_bind(&endp->local_rtcp, endp->rtp_port + 1) != 0) {
+ 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",
- source_addr, endp->rtp_port + 1, ENDPOINT_NUMBER(endp));
+ cfg->source_addr, endp->rtp_port + 1, ENDPOINT_NUMBER(endp));
goto cleanup1;
}
@@ -397,13 +350,14 @@
return send_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 *send_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"
@@ -412,7 +366,8 @@
"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);
+ endp->cfg->audio_payload, endp->cfg->audio_payload,
+ endp->cfg->audio_name);
return send_response_with_data(200, msg, trans_id, sdp_record);
}
@@ -438,7 +393,7 @@
* - 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;
@@ -457,7 +412,7 @@
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) {
@@ -504,21 +459,22 @@
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;
@@ -553,7 +509,7 @@
}
*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;
}
@@ -581,14 +537,14 @@
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
@@ -612,7 +568,7 @@
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;
@@ -620,7 +576,7 @@
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(500, "CRCX", trans_id);
@@ -633,11 +589,11 @@
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':
@@ -662,19 +618,19 @@
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)
+ endp->rtp_port = rtp_calculate_port(ENDPOINT_NUMBER(endp), cfg->rtp_base_port);
+ if (!cfg->early_bind && bind_rtp(endp) != 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;
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);
error:
@@ -688,7 +644,7 @@
return send_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;
@@ -696,7 +652,7 @@
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);
@@ -767,8 +723,8 @@
/* 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);
+ if (cfg->change_cb)
+ cfg->change_cb(cfg, ENDPOINT_NUMBER(endp), MGCP_ENDP_MDCX, endp->rtp_port);
return send_with_sdp(endp, "MDCX", trans_id);
error:
@@ -781,7 +737,7 @@
return send_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;
@@ -789,7 +745,7 @@
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);
@@ -825,14 +781,14 @@
talloc_free(endp->callid);
talloc_free(endp->local_options);
- if (!early_bind) {
+ if (!cfg->early_bind) {
bsc_unregister_fd(&endp->local_rtp);
bsc_unregister_fd(&endp->local_rtcp);
}
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);
+ if (cfg->change_cb)
+ cfg->change_cb(cfg, ENDPOINT_NUMBER(endp), MGCP_ENDP_DLCX, endp->rtp_port);
return send_response(250, "DLCX", trans_id);
@@ -846,299 +802,48 @@
return send_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;
}
- 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)
+int mgcp_bind_rtp_port(struct mgcp_endpoint *endp, int rtp_port)
{
- int i, rc;
-
- 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 (!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;
- }
-
- /* 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;
- }
-
- /*
- * 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->rtp_port = rtp_port;
+ return bind_rtp(endp);
}