prefix sub-directories containing libraries with 'lib'

... and make sure tests work again after restructuring

1 files changed, 0 insertions, 1102 deletions

diff --git a/openbsc/src/mgcp/mgcp_protocol.c b/openbsc/src/mgcp/mgcp_protocol.c
deleted file mode 100644
index ba290dd90..000000000
--- a/openbsc/src/mgcp/mgcp_protocol.c
+++ /dev/null
@@ -1,1102 +0,0 @@
-/* A Media Gateway Control Protocol Media Gateway: RFC 3435 */
-/* The protocol implementation */
-
-/*
- * (C) 2009-2011 by Holger Hans Peter Freyther <zecke@selfish.org>
- * (C) 2009-2011 by On-Waves
- * All Rights Reserved
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- */
-
-#include <ctype.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#include <limits.h>
-#include <unistd.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/mgcp_internal.h>
-
-/**
- * Macro for tokenizing MGCP messages and SDP in one go.
- *
- */
-#define MSG_TOKENIZE_START \
-	line_start = 0;						\
-	for (i = 0; i < msgb_l3len(msg); ++i) {			\
-		/* we have a line end */			\
-		if (msg->l3h[i] == '\n') {			\
-			/* skip the first line */		\
-			if (line_start == 0) {			\
-				line_start = i + 1;		\
-				continue;			\
-			}					\
-								\
-			/* check if we have a proper param */	\
-			if (i - line_start == 1 && msg->l3h[line_start] == '\r') { \
-			} else if (i - line_start > 2		\
-			    && islower(msg->l3h[line_start])	\
-			    && msg->l3h[line_start + 1] == '=') { \
-			} else if (i - line_start < 3		\
-			    || msg->l3h[line_start + 1] != ':'	\
-			    || msg->l3h[line_start + 2] != ' ')	\
-				goto error;			\
-								\
-			msg->l3h[i] = '\0';			\
-			if (msg->l3h[i-1] == '\r')		\
-				msg->l3h[i-1] = '\0';
-
-#define MSG_TOKENIZE_END \
-			line_start = i + 1; \
-		}			    \
-	}
-
-static void mgcp_rtp_end_reset(struct mgcp_rtp_end *end);
-
-struct mgcp_request {
-	char *name;
-	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 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 struct msgb *handle_rsip(struct mgcp_config *cfg, struct msgb *msg);
-static struct msgb *handle_noti_req(struct mgcp_config *cfg, struct msgb *msg);
-
-static void create_transcoder(struct mgcp_endpoint *endp);
-static void delete_transcoder(struct mgcp_endpoint *endp);
-
-static uint32_t generate_call_id(struct mgcp_config *cfg)
-{
-	int i;
-
-	/* use the call id */
-	++cfg->last_call_id;
-
-	/* handle wrap around */
-	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 < cfg->trunk.number_endpoints; ++i)
-		if (cfg->trunk.endpoints[i].ci == cfg->last_call_id)
-			return generate_call_id(cfg);
-
-	return cfg->last_call_id;
-}
-
-/*
- * array of function pointers for handling various
- * messages. In the future this might be binary sorted
- * for performance reasons.
- */
-static const struct mgcp_request mgcp_requests [] = {
-	MGCP_REQUEST("AUEP", handle_audit_endpoint, "AuditEndpoint")
-	MGCP_REQUEST("CRCX", handle_create_con, "CreateConnection")
-	MGCP_REQUEST("DLCX", handle_delete_con, "DeleteConnection")
-	MGCP_REQUEST("MDCX", handle_modify_con, "ModifiyConnection")
-	MGCP_REQUEST("RQNT", handle_noti_req, "NotificationRequest")
-
-	/* SPEC extension */
-	MGCP_REQUEST("RSIP", handle_rsip, "ReSetInProgress")
-};
-
-static struct msgb *mgcp_msgb_alloc(void)
-{
-	struct msgb *msg;
-	msg = msgb_alloc_headroom(4096, 128, "MGCP msg");
-	if (!msg)
-	    LOGP(DMGCP, LOGL_ERROR, "Failed to msgb for MGCP data.\n");
-
-	return msg;
-}
-
-struct msgb *mgcp_create_response_with_data(int code, const char *txt,
-					    const char *msg, const char *trans,
-					    const char *data)
-{
-	int len;
-	struct msgb *res;
-
-	res = mgcp_msgb_alloc();
-	if (!res)
-		return NULL;
-
-	if (data) {
-		len = snprintf((char *) res->data, 2048, "%d %s%s\r\n%s", code, trans, txt, data);
-	} else {
-		len = snprintf((char *) res->data, 2048, "%d %s%s\r\n", code, trans, txt);
-	}
-
-	res->l2h = msgb_put(res, len);
-	LOGP(DMGCP, LOGL_DEBUG, "Sending response: code: %d for '%s'\n", code, res->l2h);
-	return res;
-}
-
-static struct msgb *create_ok_response(int code, const char *msg, const char *trans)
-{
-	return mgcp_create_response_with_data(code, " OK", msg, trans, NULL);
-}
-
-static struct msgb *create_err_response(int code, const char *msg, const char *trans)
-{
-	return mgcp_create_response_with_data(code, " FAIL", msg, trans, NULL);
-}
-
-static struct msgb *create_response_with_sdp(struct mgcp_endpoint *endp,
-					     const char *msg, const char *trans_id)
-{
-	const char *addr = endp->cfg->local_ip;
-	char sdp_record[4096];
-
-	if (!addr)
-		addr = endp->cfg->source_addr;
-
-	snprintf(sdp_record, sizeof(sdp_record) - 1,
-			"I: %u\n\n"
-			"v=0\r\n"
-			"c=IN IP4 %s\r\n"
-			"m=audio %d RTP/AVP %d\r\n"
-			"a=rtpmap:%d %s\r\n",
-			endp->ci, addr, endp->net_end.local_port,
-			endp->bts_end.payload_type, endp->bts_end.payload_type,
-		        endp->tcfg->audio_name);
-	return mgcp_create_response_with_data(200, " OK", msg, trans_id, sdp_record);
-}
-
-/*
- * handle incoming messages:
- *   - this can be a command (four letters, space, transaction id)
- *   - or a response (three numbers, space, transaction id)
- */
-struct msgb *mgcp_handle_message(struct mgcp_config *cfg, struct msgb *msg)
-{
-        int code;
-	struct msgb *resp = NULL;
-
-	if (msgb_l2len(msg) < 4) {
-		LOGP(DMGCP, LOGL_ERROR, "mgs too short: %d\n", msg->len);
-		return NULL;
-	}
-
-        /* attempt to treat it as a response */
-        if (sscanf((const char *)&msg->l2h[0], "%3d %*s", &code) == 1) {
-		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->l2h[0], 4) == 0) {
-				handled = 1;
-				resp = mgcp_requests[i].handle_request(cfg, msg);
-				break;
-			}
-		if (!handled) {
-			LOGP(DMGCP, LOGL_NOTICE, "MSG with type: '%.4s' not handled\n", &msg->l2h[0]);
-		}
-	}
-
-	return resp;
-}
-
-/* string tokenizer for the poor */
-static int find_msg_pointers(struct msgb *msg, struct mgcp_msg_ptr *ptrs, int ptrs_length)
-{
-	int i, found = 0;
-
-	int whitespace = 1;
-	for (i = 0; i < msgb_l3len(msg) && ptrs_length > 0; ++i) {
-		/* if we have a space we found an end */
-		if (msg->l3h[i]	== ' ' || msg->l3h[i] == '\r' || msg->l3h[i] == '\n') {
-			if (!whitespace) {
-				++found;
-				whitespace = 1;
-				ptrs->length = i - ptrs->start - 1;
-				++ptrs;
-				--ptrs_length;
-			} else {
-			    /* skip any number of whitespace */
-			}
-
-			/* line end... stop */
-			if (msg->l3h[i] == '\r' || msg->l3h[i] == '\n')
-				break;
-		} else if (msg->l3h[i] == '\r' || msg->l3h[i] == '\n') {
-			/* line end, be done */
-			break;
-		} else if (whitespace) {
-			whitespace = 0;
-			ptrs->start = i;
-		}
-	}
-
-	if (ptrs_length == 0)
-		return -1;
-	return found;
-}
-
-/**
- * We have a null terminated string with the endpoint name here. We only
- * support two kinds. Simple ones as seen on the BSC level and the ones
- * seen on the trunk side.
- */
-static struct mgcp_endpoint *find_e1_endpoint(struct mgcp_config *cfg,
-					     const char *mgcp)
-{
-	char *rest = NULL;
-	struct mgcp_trunk_config *tcfg;
-	int trunk, endp;
-
-	trunk = strtoul(mgcp + 6, &rest, 10);
-	if (rest == NULL || rest[0] != '/' || trunk < 1) {
-		LOGP(DMGCP, LOGL_ERROR, "Wrong trunk name '%s'\n", mgcp);
-		return NULL;
-	}
-
-	endp = strtoul(rest + 1, &rest, 10);
-	if (rest == NULL || rest[0] != '@') {
-		LOGP(DMGCP, LOGL_ERROR, "Wrong endpoint name '%s'\n", mgcp);
-		return NULL;
-	}
-
-	/* signalling is on timeslot 1 */
-	if (endp == 1)
-		return NULL;
-
-	tcfg = mgcp_trunk_num(cfg, trunk);
-	if (!tcfg) {
-		LOGP(DMGCP, LOGL_ERROR, "The trunk %d is not declared.\n", trunk);
-		return NULL;
-	}
-
-	if (!tcfg->endpoints) {
-		LOGP(DMGCP, LOGL_ERROR, "Endpoints of trunk %d not allocated.\n", trunk);
-		return NULL;
-	}
-
-	if (endp < 1 || endp >= tcfg->number_endpoints) {
-		LOGP(DMGCP, LOGL_ERROR, "Failed to find endpoint '%s'\n", mgcp);
-		return NULL;
-	}
-
-	return &tcfg->endpoints[endp];
-}
-
-static struct mgcp_endpoint *find_endpoint(struct mgcp_config *cfg, const char *mgcp)
-{
-	char *endptr = NULL;
-	unsigned int gw = INT_MAX;
-
-	if (strncmp(mgcp, "ds/e1", 5) == 0) {
-		return find_e1_endpoint(cfg, mgcp);
-	} else {
-		gw = strtoul(mgcp, &endptr, 16);
-		if (gw > 0 && gw < cfg->trunk.number_endpoints && strcmp(endptr, "@mgw") == 0)
-			return &cfg->trunk.endpoints[gw];
-	}
-
-	LOGP(DMGCP, LOGL_ERROR, "Not able to find endpoint: '%s'\n", mgcp);
-	return NULL;
-}
-
-int mgcp_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;
-	}
-
-	found = find_msg_pointers(msg, ptr, size);
-
-	if (found <= 3) {
-		LOGP(DMGCP, LOGL_ERROR, "Gateway: Not enough params. Found: %d\n", found);
-		return -1;
-	}
-
-	/*
-	 * replace the space with \0. the main method gurantess that
-	 * we still have + 1 for null termination
-	 */
-	msg->l3h[ptr[3].start + ptr[3].length + 1] = '\0';
-	msg->l3h[ptr[2].start + ptr[2].length + 1] = '\0';
-	msg->l3h[ptr[1].start + ptr[1].length + 1] = '\0';
-	msg->l3h[ptr[0].start + ptr[0].length + 1] = '\0';
-
-	if (strncmp("1.0", (const char *)&msg->l3h[ptr[3].start], 3) != 0
-	    || strncmp("MGCP", (const char *)&msg->l3h[ptr[2].start], 4) != 0) {
-		LOGP(DMGCP, LOGL_ERROR, "Wrong MGCP version. Not handling: '%s' '%s'\n",
-			(const char *)&msg->l3h[ptr[3].start],
-			(const char *)&msg->l3h[ptr[2].start]);
-		return -1;
-	}
-
-	*transaction_id = (const char *)&msg->l3h[ptr[0].start];
-	if (endp) {
-		*endp = find_endpoint(cfg, (const char *)&msg->l3h[ptr[1].start]);
-		return *endp == NULL;
-	}
-	return 0;
-}
-
-static int verify_call_id(const struct mgcp_endpoint *endp,
-			  const char *callid)
-{
-	if (strcmp(endp->callid, callid) != 0) {
-		LOGP(DMGCP, LOGL_ERROR, "CallIDs does not match on 0x%x. '%s' != '%s'\n",
-			ENDPOINT_NUMBER(endp), endp->callid, callid);
-		return -1;
-	}
-
-	return 0;
-}
-
-static int verify_ci(const struct mgcp_endpoint *endp,
-		     const char *_ci)
-{
-	uint32_t ci = strtoul(_ci, NULL, 10);
-
-	if (ci != endp->ci) {
-		LOGP(DMGCP, LOGL_ERROR, "ConnectionIdentifiers do not match on 0x%x. %u != %s\n",
-			ENDPOINT_NUMBER(endp), endp->ci, _ci);
-		return -1;
-	}
-
-	return 0;
-}
-
-static struct msgb *handle_audit_endpoint(struct mgcp_config *cfg, struct msgb *msg)
-{
-	struct mgcp_msg_ptr data_ptrs[6];
-	int found;
-	const char *trans_id;
-	struct mgcp_endpoint *endp;
-
-	found = mgcp_analyze_header(cfg, msg, data_ptrs, ARRAY_SIZE(data_ptrs), &trans_id, &endp);
-	if (found != 0)
-		return create_err_response(500, "AUEP", trans_id);
-	else
-		return create_ok_response(200, "AUEP", trans_id);
-}
-
-static int parse_conn_mode(const char *msg, int *conn_mode)
-{
-	int ret = 0;
-	if (strcmp(msg, "recvonly") == 0)
-		*conn_mode = MGCP_CONN_RECV_ONLY;
-	else if (strcmp(msg, "sendrecv") == 0)
-		*conn_mode = MGCP_CONN_RECV_SEND;
-	else if (strcmp(msg, "sendonly") == 0)
-		*conn_mode = MGCP_CONN_SEND_ONLY;
-	else if (strcmp(msg, "loopback") == 0)
-		*conn_mode = MGCP_CONN_LOOPBACK;
-	else {
-		LOGP(DMGCP, LOGL_ERROR, "Unknown connection mode: '%s'\n", msg);
-		ret = -1;
-	}
-
-	return ret;
-}
-
-static int allocate_port(struct mgcp_endpoint *endp, struct mgcp_rtp_end *end,
-			 struct mgcp_port_range *range,
-			 int (*alloc)(struct mgcp_endpoint *endp, int port))
-{
-	int i;
-
-	if (range->mode == PORT_ALLOC_STATIC) {
-		end->local_alloc = PORT_ALLOC_STATIC;
-		return 0;
-	}
-
-	/* attempt to find a port */
-	for (i = 0; i < 200; ++i) {
-		int rc;
-
-		if (range->last_port >= range->range_end)
-			range->last_port = range->range_start;
-
-		rc = alloc(endp, range->last_port);
-
-		range->last_port += 2;
-		if (rc == 0) {
-			end->local_alloc = PORT_ALLOC_DYNAMIC;
-			return 0;
-		}
-
-	}
-
-	LOGP(DMGCP, LOGL_ERROR, "Allocating a RTP/RTCP port failed 200 times 0x%x.\n",
-	     ENDPOINT_NUMBER(endp));
-	return -1;
-}
-
-static int allocate_ports(struct mgcp_endpoint *endp)
-{
-	if (allocate_port(endp, &endp->net_end, &endp->cfg->net_ports,
-			  mgcp_bind_net_rtp_port) != 0)
-		return -1;
-
-	if (allocate_port(endp, &endp->bts_end, &endp->cfg->bts_ports,
-			  mgcp_bind_bts_rtp_port) != 0) {
-		mgcp_rtp_end_reset(&endp->net_end);
-		return -1;
-	}
-
-	if (endp->cfg->transcoder_ip && endp->tcfg->trunk_type == MGCP_TRUNK_VIRTUAL) {
-		if (allocate_port(endp, &endp->trans_net,
-				  &endp->cfg->transcoder_ports,
-				  mgcp_bind_trans_net_rtp_port) != 0) {
-			mgcp_rtp_end_reset(&endp->net_end);
-			mgcp_rtp_end_reset(&endp->bts_end);
-			return -1;
-		}
-
-		if (allocate_port(endp, &endp->trans_bts,
-				  &endp->cfg->transcoder_ports,
-				  mgcp_bind_trans_bts_rtp_port) != 0) {
-			mgcp_rtp_end_reset(&endp->net_end);
-			mgcp_rtp_end_reset(&endp->bts_end);
-			mgcp_rtp_end_reset(&endp->trans_net);
-			return -1;
-		}
-
-		/* remember that we have set up transcoding */
-		endp->is_transcoded = 1;
-	}
-
-	return 0;
-}
-
-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_trunk_config *tcfg;
-	struct mgcp_endpoint *endp;
-	int error_code = 400;
-
-	found = mgcp_analyze_header(cfg, msg, data_ptrs, ARRAY_SIZE(data_ptrs), &trans_id, &endp);
-	if (found != 0)
-		return create_err_response(510, "CRCX", trans_id);
-
-	tcfg = endp->tcfg;
-
-	if (endp->allocated) {
-		if (tcfg->force_realloc) {
-			LOGP(DMGCP, LOGL_NOTICE, "Endpoint 0x%x already allocated. Forcing realloc.\n",
-			    ENDPOINT_NUMBER(endp));
-			mgcp_free_endp(endp);
-			if (cfg->realloc_cb)
-				cfg->realloc_cb(tcfg, ENDPOINT_NUMBER(endp));
-		} else {
-			LOGP(DMGCP, LOGL_ERROR, "Endpoint is already used. 0x%x\n",
-			     ENDPOINT_NUMBER(endp));
-			return create_err_response(400, "CRCX", trans_id);
-		}
-	}
-
-	/* parse CallID C: and LocalParameters L: */
-	MSG_TOKENIZE_START
-	switch (msg->l3h[line_start]) {
-	case 'L':
-		endp->local_options = talloc_strdup(tcfg->endpoints,
-			(const char *)&msg->l3h[line_start + 3]);
-		break;
-	case 'C':
-		endp->callid = talloc_strdup(tcfg->endpoints,
-			(const char *)&msg->l3h[line_start + 3]);
-		break;
-	case 'M':
-		if (parse_conn_mode((const char *)&msg->l3h[line_start + 3],
-			    &endp->conn_mode) != 0) {
-		    error_code = 517;
-		    goto error2;
-		}
-
-		endp->orig_mode = endp->conn_mode;
-		break;
-	default:
-		LOGP(DMGCP, LOGL_NOTICE, "Unhandled option: '%c'/%d on 0x%x\n",
-			msg->l3h[line_start], msg->l3h[line_start],
-			ENDPOINT_NUMBER(endp));
-		break;
-	}
-	MSG_TOKENIZE_END
-
-	/* initialize */
-	endp->net_end.rtp_port = endp->net_end.rtcp_port = endp->bts_end.rtp_port = endp->bts_end.rtcp_port = 0;
-
-	/* set to zero until we get the info */
-	memset(&endp->net_end.addr, 0, sizeof(endp->net_end.addr));
-
-	/* bind to the port now */
-	if (allocate_ports(endp) != 0)
-		goto error2;
-
-	/* assign a local call identifier or fail */
-	endp->ci = generate_call_id(cfg);
-	if (endp->ci == CI_UNUSED)
-		goto error2;
-
-	endp->allocated = 1;
-	endp->bts_end.payload_type = tcfg->audio_payload;
-
-	/* policy CB */
-	if (cfg->policy_cb) {
-		switch (cfg->policy_cb(tcfg, 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_err_response(400, "CRCX", trans_id);
-			break;
-		case MGCP_POLICY_DEFER:
-			/* stop processing */
-			create_transcoder(endp);
-			return NULL;
-			break;
-		case MGCP_POLICY_CONT:
-			/* just continue */
-			break;
-		}
-	}
-
-	LOGP(DMGCP, LOGL_DEBUG, "Creating endpoint on: 0x%x CI: %u port: %u/%u\n",
-		ENDPOINT_NUMBER(endp), endp->ci,
-		endp->net_end.local_port, endp->bts_end.local_port);
-	if (cfg->change_cb)
-		cfg->change_cb(tcfg, ENDPOINT_NUMBER(endp), MGCP_ENDP_CRCX);
-
-	create_transcoder(endp);
-	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 create_err_response(error_code, "CRCX", trans_id);
-
-error2:
-	mgcp_free_endp(endp);
-	LOGP(DMGCP, LOGL_NOTICE, "Resource error on 0x%x\n", ENDPOINT_NUMBER(endp));
-	return create_err_response(error_code, "CRCX", trans_id);
-}
-
-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;
-	const char *trans_id;
-	struct mgcp_endpoint *endp;
-	int error_code = 500;
-	int silent = 0;
-
-	found = mgcp_analyze_header(cfg, msg, data_ptrs, ARRAY_SIZE(data_ptrs), &trans_id, &endp);
-	if (found != 0)
-		return create_err_response(510, "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 create_err_response(400, "MDCX", trans_id);
-	}
-
-	MSG_TOKENIZE_START
-	switch (msg->l3h[line_start]) {
-	case 'C': {
-		if (verify_call_id(endp, (const char *)&msg->l3h[line_start + 3]) != 0)
-			goto error3;
-		break;
-	}
-	case 'I': {
-		if (verify_ci(endp, (const char *)&msg->l3h[line_start + 3]) != 0)
-			goto error3;
-		break;
-	}
-	case 'L':
-		/* skip */
-		break;
-	case 'M':
-		if (parse_conn_mode((const char *)&msg->l3h[line_start + 3],
-			    &endp->conn_mode) != 0) {
-		    error_code = 517;
-		    goto error3;
-		}
-		endp->orig_mode = endp->conn_mode;
-		break;
-	case 'Z':
-		silent = strcmp("noanswer", (const char *)&msg->l3h[line_start + 3]) == 0;
-		break;
-	case '\0':
-		/* SDP file begins */
-		break;
-	case 'a':
-	case 'o':
-	case 's':
-	case 't':
-	case 'v':
-		/* skip these SDP attributes */
-		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, &payload) == 2) {
-			endp->net_end.rtp_port = htons(port);
-			endp->net_end.rtcp_port = htons(port + 1);
-			endp->net_end.payload_type = payload;
-		}
-		break;
-	}
-	case 'c': {
-		char ipv4[16];
-		const char *param = (const char *)&msg->l3h[line_start];
-
-		if (sscanf(param, "c=IN IP4 %15s", ipv4) == 1) {
-			inet_aton(ipv4, &endp->net_end.addr);
-		}
-		break;
-	}
-	default:
-		LOGP(DMGCP, LOGL_NOTICE, "Unhandled option: '%c'/%d on 0x%x\n",
-			msg->l3h[line_start], msg->l3h[line_start],
-			ENDPOINT_NUMBER(endp));
-		break;
-	}
-	MSG_TOKENIZE_END
-
-	/* policy CB */
-	if (cfg->policy_cb) {
-		switch (cfg->policy_cb(endp->tcfg, 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));
-			if (silent)
-				goto out_silent;
-			return create_err_response(400, "MDCX", trans_id);
-			break;
-		case MGCP_POLICY_DEFER:
-			/* stop processing */
-			return NULL;
-			break;
-		case MGCP_POLICY_CONT:
-			/* just continue */
-			break;
-		}
-	}
-
-	/* modify */
-	LOGP(DMGCP, LOGL_DEBUG, "Modified endpoint on: 0x%x Server: %s:%u\n",
-		ENDPOINT_NUMBER(endp), inet_ntoa(endp->net_end.addr), ntohs(endp->net_end.rtp_port));
-	if (cfg->change_cb)
-		cfg->change_cb(endp->tcfg, ENDPOINT_NUMBER(endp), MGCP_ENDP_MDCX);
-	if (silent)
-		goto out_silent;
-
-	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 create_err_response(error_code, "MDCX", trans_id);
-
-error3:
-	return create_err_response(error_code, "MDCX", trans_id);
-
-
-out_silent:
-	return NULL;
-}
-
-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;
-	const char *trans_id;
-	struct mgcp_endpoint *endp;
-	int error_code = 400;
-	int silent = 0;
-
-	found = mgcp_analyze_header(cfg, msg, data_ptrs, ARRAY_SIZE(data_ptrs), &trans_id, &endp);
-	if (found != 0)
-		return create_err_response(error_code, "DLCX", trans_id);
-
-	if (!endp->allocated) {
-		LOGP(DMGCP, LOGL_ERROR, "Endpoint is not used. 0x%x\n", ENDPOINT_NUMBER(endp));
-		return create_err_response(400, "DLCX", trans_id);
-	}
-
-	MSG_TOKENIZE_START
-	switch (msg->l3h[line_start]) {
-	case 'C': {
-		if (verify_call_id(endp, (const char *)&msg->l3h[line_start + 3]) != 0)
-			goto error3;
-		break;
-	}
-	case 'I': {
-		if (verify_ci(endp, (const char *)&msg->l3h[line_start + 3]) != 0)
-			goto error3;
-		break;
-	case 'Z':
-		silent = strcmp("noanswer", (const char *)&msg->l3h[line_start + 3]) == 0;
-		break;
-	}
-	default:
-		LOGP(DMGCP, LOGL_NOTICE, "Unhandled option: '%c'/%d on 0x%x\n",
-			msg->l3h[line_start], msg->l3h[line_start],
-			ENDPOINT_NUMBER(endp));
-		break;
-	}
-	MSG_TOKENIZE_END
-
-	/* policy CB */
-	if (cfg->policy_cb) {
-		switch (cfg->policy_cb(endp->tcfg, 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));
-			if (silent)
-				goto out_silent;
-			return create_err_response(400, "DLCX", trans_id);
-			break;
-		case MGCP_POLICY_DEFER:
-			/* stop processing */
-			delete_transcoder(endp);
-			return NULL;
-			break;
-		case MGCP_POLICY_CONT:
-			/* just continue */
-			break;
-		}
-	}
-
-	/* free the connection */
-	LOGP(DMGCP, LOGL_DEBUG, "Deleted endpoint on: 0x%x Server: %s:%u\n",
-		ENDPOINT_NUMBER(endp), inet_ntoa(endp->net_end.addr), ntohs(endp->net_end.rtp_port));
-
-	delete_transcoder(endp);
-	mgcp_free_endp(endp);
-	if (cfg->change_cb)
-		cfg->change_cb(endp->tcfg, ENDPOINT_NUMBER(endp), MGCP_ENDP_DLCX);
-
-	if (silent)
-		goto out_silent;
-	return create_ok_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 create_err_response(error_code, "DLCX", trans_id);
-
-error3:
-	return create_err_response(error_code, "DLCX", trans_id);
-
-out_silent:
-	return NULL;
-}
-
-static struct msgb *handle_rsip(struct mgcp_config *cfg, struct msgb *msg)
-{
-	if (cfg->reset_cb)
-		cfg->reset_cb(cfg);
-	return NULL;
-}
-
-/*
- * This can request like DTMF detection and forward, fax detection... it
- * can also request when the notification should be send and such. We don't
- * do this right now.
- */
-static struct msgb *handle_noti_req(struct mgcp_config *cfg, struct msgb *msg)
-{
-	struct mgcp_msg_ptr data_ptrs[6];
-	const char *trans_id;
-	struct mgcp_endpoint *endp;
-	int found;
-
-	found = mgcp_analyze_header(cfg, msg, data_ptrs, ARRAY_SIZE(data_ptrs), &trans_id, &endp);
-	if (found != 0)
-		return create_err_response(400, "RQNT", trans_id);
-
-	if (!endp->allocated) {
-		LOGP(DMGCP, LOGL_ERROR, "Endpoint is not used. 0x%x\n", ENDPOINT_NUMBER(endp));
-		return create_err_response(400, "RQNT", trans_id);
-	}
-	return create_ok_response(200, "RQNT", trans_id);
-}
-
-struct mgcp_config *mgcp_config_alloc(void)
-{
-	struct mgcp_config *cfg;
-
-	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->transcoder_remote_base = 4000;
-
-	cfg->bts_ports.base_port = RTP_PORT_DEFAULT;
-	cfg->net_ports.base_port = RTP_PORT_NET_DEFAULT;
-
-	/* default trunk handling */
-	cfg->trunk.cfg = cfg;
-	cfg->trunk.trunk_nr = 0;
-	cfg->trunk.trunk_type = MGCP_TRUNK_VIRTUAL;
-	cfg->trunk.audio_name = talloc_strdup(cfg, "AMR/8000");
-	cfg->trunk.audio_payload = 126;
-
-	INIT_LLIST_HEAD(&cfg->trunks);
-
-	return cfg;
-}
-
-struct mgcp_trunk_config *mgcp_trunk_alloc(struct mgcp_config *cfg, int nr)
-{
-	struct mgcp_trunk_config *trunk;
-
-	trunk = talloc_zero(cfg, struct mgcp_trunk_config);
-	if (!trunk) {
-		LOGP(DMGCP, LOGL_ERROR, "Failed to allocate.\n");
-		return NULL;
-	}
-
-	trunk->cfg = cfg;
-	trunk->trunk_type = MGCP_TRUNK_E1;
-	trunk->trunk_nr = nr;
-	trunk->audio_name = talloc_strdup(cfg, "AMR/8000");
-	trunk->audio_payload = 126;
-	trunk->number_endpoints = 33;
-	llist_add_tail(&trunk->entry, &cfg->trunks);
-	return trunk;
-}
-
-struct mgcp_trunk_config *mgcp_trunk_num(struct mgcp_config *cfg, int index)
-{
-	struct mgcp_trunk_config *trunk;
-
-	llist_for_each_entry(trunk, &cfg->trunks, entry)
-		if (trunk->trunk_nr == index)
-			return trunk;
-
-	return NULL;
-}
-
-static void mgcp_rtp_end_reset(struct mgcp_rtp_end *end)
-{
-	if (end->local_alloc == PORT_ALLOC_DYNAMIC) {
-		mgcp_free_rtp_port(end);
-		end->local_port = 0;
-	}
-
-	end->packets = 0;
-	memset(&end->addr, 0, sizeof(end->addr));
-	end->rtp_port = end->rtcp_port = 0;
-	end->payload_type = -1;
-	end->local_alloc = -1;
-}
-
-static void mgcp_rtp_end_init(struct mgcp_rtp_end *end)
-{
-	mgcp_rtp_end_reset(end);
-	end->rtp.fd = -1;
-	end->rtcp.fd = -1;
-}
-
-int mgcp_endpoints_allocate(struct mgcp_trunk_config *tcfg)
-{
-	int i;
-
-	/* Initialize all endpoints */
-	tcfg->endpoints = _talloc_zero_array(tcfg->cfg,
-				       sizeof(struct mgcp_endpoint),
-				       tcfg->number_endpoints, "endpoints");
-	if (!tcfg->endpoints)
-		return -1;
-
-	for (i = 0; i < tcfg->number_endpoints; ++i) {
-		tcfg->endpoints[i].ci = CI_UNUSED;
-		tcfg->endpoints[i].cfg = tcfg->cfg;
-		tcfg->endpoints[i].tcfg = tcfg;
-		mgcp_rtp_end_init(&tcfg->endpoints[i].net_end);
-		mgcp_rtp_end_init(&tcfg->endpoints[i].bts_end);
-		mgcp_rtp_end_init(&tcfg->endpoints[i].trans_net);
-		mgcp_rtp_end_init(&tcfg->endpoints[i].trans_bts);
-	}
-
-	return 0;
-}
-
-void mgcp_free_endp(struct mgcp_endpoint *endp)
-{
-	LOGP(DMGCP, LOGL_DEBUG, "Deleting endpoint on: 0x%x\n", ENDPOINT_NUMBER(endp));
-	endp->ci = CI_UNUSED;
-	endp->allocated = 0;
-
-	if (endp->callid) {
-		talloc_free(endp->callid);
-		endp->callid = NULL;
-	}
-
-	if (endp->local_options) {
-		talloc_free(endp->local_options);
-		endp->local_options = NULL;
-	}
-
-	mgcp_rtp_end_reset(&endp->bts_end);
-	mgcp_rtp_end_reset(&endp->net_end);
-	mgcp_rtp_end_reset(&endp->trans_net);
-	mgcp_rtp_end_reset(&endp->trans_bts);
-	endp->is_transcoded = 0;
-
-	memset(&endp->net_state, 0, sizeof(endp->net_state));
-	memset(&endp->bts_state, 0, sizeof(endp->bts_state));
-
-	endp->conn_mode = endp->orig_mode = MGCP_CONN_NONE;
-	endp->allow_patch = 0;
-
-	memset(&endp->taps, 0, sizeof(endp->taps));
-}
-
-static int send_trans(struct mgcp_config *cfg, const char *buf, int len)
-{
-	struct sockaddr_in addr;
-
-	memset(&addr, 0, sizeof(addr));
-	addr.sin_family = AF_INET;
-	addr.sin_addr = cfg->transcoder_in;
-	addr.sin_port = htons(2427);
-	return sendto(cfg->gw_fd.bfd.fd, buf, len, 0,
-		      (struct sockaddr *) &addr, sizeof(addr));
-}
-
-static void send_msg(struct mgcp_endpoint *endp, int endpoint, int port,
-		     const char *msg, const char *mode)
-{
-	char buf[2096];
-	int len;
-
-	/* hardcoded to AMR right now, we do not know the real type at this point */
-	len = snprintf(buf, sizeof(buf),
-			"%s 42 %x@mgw MGCP 1.0\r\n"
-			"C: 4256\r\n"
-			"M: %s\r\n"
-			"\r\n"
-			"c=IN IP4 %s\r\n"
-			"m=audio %d RTP/AVP %d\r\n"
-			"a=rtpmap:%d %s\r\n",
-			msg, endpoint, mode, endp->cfg->source_addr,
-			port, endp->tcfg->audio_payload,
-			endp->tcfg->audio_payload, endp->tcfg->audio_name);
-
-	if (len < 0)
-		return;
-
-	buf[sizeof(buf) - 1] = '\0';
-
-	send_trans(endp->cfg, buf, len);
-}
-
-static void send_dlcx(struct mgcp_endpoint *endp, int endpoint)
-{
-	char buf[2096];
-	int len;
-
-	len = snprintf(buf, sizeof(buf),
-			"DLCX 43 %x@mgw MGCP 1.0\r\n"
-			"C: 4256\r\n"
-			, endpoint);
-
-	if (len < 0)
-		return;
-
-	buf[sizeof(buf) - 1] = '\0';
-
-	send_trans(endp->cfg, buf, len);
-}
-
-static void create_transcoder(struct mgcp_endpoint *endp)
-{
-	int port;
-	int in_endp = ENDPOINT_NUMBER(endp);
-	int out_endp = endp_back_channel(in_endp);
-
-	if (!endp->is_transcoded)
-		return;
-
-	send_msg(endp, in_endp, endp->trans_bts.local_port, "CRCX", "sendrecv");
-	send_msg(endp, in_endp, endp->trans_bts.local_port, "MDCX", "sendrecv");
-	send_msg(endp, out_endp, endp->trans_net.local_port, "CRCX", "sendrecv");
-	send_msg(endp, out_endp, endp->trans_net.local_port, "MDCX", "sendrecv");
-
-	port = rtp_calculate_port(in_endp, endp->cfg->transcoder_remote_base);
-	endp->trans_bts.rtp_port = htons(port);
-	endp->trans_bts.rtcp_port = htons(port + 1);
-
-	port = rtp_calculate_port(out_endp, endp->cfg->transcoder_remote_base);
-	endp->trans_net.rtp_port = htons(port);
-	endp->trans_net.rtcp_port = htons(port + 1);
-}
-
-static void delete_transcoder(struct mgcp_endpoint *endp)
-{
-	int in_endp = ENDPOINT_NUMBER(endp);
-	int out_endp = endp_back_channel(in_endp);
-
-	if (!endp->is_transcoded)
-		return;
-
-	send_dlcx(endp, in_endp);
-	send_dlcx(endp, out_endp);
-}
-
-int mgcp_reset_transcoder(struct mgcp_config *cfg)
-{
-	if (!cfg->transcoder_ip)
-		return 0;
-
-	static const char mgcp_reset[] = {
-	    "RSIP 1 13@mgw MGCP 1.0\r\n"
-	};
-
-	return send_trans(cfg, mgcp_reset, sizeof mgcp_reset -1);
-}