/* * *  BlueZ - Bluetooth protocol stack for Linux * *  Copyright (C) 2002-2003  Maxim Krasnyansky <maxk@qualcomm.com> *  Copyright (C) 2002-2008  Marcel Holtmann <marcel@holtmann.org> * * *  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 St, Fifth Floor, Boston, MA  02110-1301  USA * */#ifdef HAVE_CONFIG_H#include <config.h>#endif#include <stdio.h>#include <errno.h>#include <unistd.h>#include <stdlib.h>#include <string.h>#include <syslog.h>#include <sys/types.h>#include <sys/socket.h>#include <bluetooth/bluetooth.h>#include <bluetooth/sdp.h>#include <bluetooth/sdp_lib.h>#include "dund.h"static unsigned char async_uuid[] = {	0x03, 0x50, 0x27, 0x8F, 0x3D, 0xCA, 0x4E, 0x62,					0x83, 0x1D, 0xA4, 0x11, 0x65, 0xFF, 0x90, 0x6C };static sdp_record_t  *record;static sdp_session_t *session;void dun_sdp_unregister(void) {	if (record && sdp_record_unregister(session, record))		syslog(LOG_ERR, "Service record unregistration failed.");	sdp_close(session);}int dun_sdp_register(bdaddr_t *device, uint8_t channel, int type){	sdp_list_t *svclass, *pfseq, *apseq, *root, *aproto;	uuid_t root_uuid, l2cap, rfcomm, dun;	sdp_profile_desc_t profile[1];	sdp_list_t *proto[2];	int status;	session = sdp_connect(BDADDR_ANY, BDADDR_LOCAL, 0);	if (!session) {		syslog(LOG_ERR, "Failed to connect to the local SDP server. %s(%d)", 				strerror(errno), errno);		return -1;	}	record = sdp_record_alloc();	if (!record) {		syslog(LOG_ERR, "Failed to alloc service record");		return -1;	}	sdp_uuid16_create(&root_uuid, PUBLIC_BROWSE_GROUP);	root = sdp_list_append(NULL, &root_uuid);	sdp_set_browse_groups(record, root);	sdp_uuid16_create(&l2cap, L2CAP_UUID);	proto[0] = sdp_list_append(NULL, &l2cap);	apseq    = sdp_list_append(NULL, proto[0]);	sdp_uuid16_create(&rfcomm, RFCOMM_UUID);	proto[1] = sdp_list_append(NULL, &rfcomm);	proto[1] = sdp_list_append(proto[1], sdp_data_alloc(SDP_UINT8, &channel));	apseq    = sdp_list_append(apseq, proto[1]);	aproto   = sdp_list_append(NULL, apseq);	sdp_set_access_protos(record, aproto);	switch (type) {	case MROUTER:		sdp_uuid16_create(&dun, SERIAL_PORT_SVCLASS_ID);		break;	case ACTIVESYNC:		sdp_uuid128_create(&dun, (void *) async_uuid);		break;	case DIALUP:		sdp_uuid16_create(&dun, DIALUP_NET_SVCLASS_ID);		break;	default:		sdp_uuid16_create(&dun, LAN_ACCESS_SVCLASS_ID);		break;	}	svclass = sdp_list_append(NULL, &dun);	sdp_set_service_classes(record, svclass);	switch (type) {	case LANACCESS:		sdp_uuid16_create(&profile[0].uuid, LAN_ACCESS_PROFILE_ID);		profile[0].version = 0x0100;		pfseq = sdp_list_append(NULL, &profile[0]);		sdp_set_profile_descs(record, pfseq);		break;	case DIALUP:		sdp_uuid16_create(&profile[0].uuid, DIALUP_NET_PROFILE_ID);		profile[0].version = 0x0100;		pfseq = sdp_list_append(NULL, &profile[0]);		sdp_set_profile_descs(record, pfseq);		break;	}	switch (type) {	case MROUTER:		sdp_set_info_attr(record, "mRouter", NULL, NULL);		break;	case ACTIVESYNC:		sdp_set_info_attr(record, "ActiveSync", NULL, NULL);		break;	case DIALUP:		sdp_set_info_attr(record, "Dialup Networking", NULL, NULL);		break;	default:		sdp_set_info_attr(record, "LAN Access Point", NULL, NULL);		break;	}	status = sdp_device_record_register(session, device, record, 0);	if (status) {		syslog(LOG_ERR, "SDP registration failed.");		sdp_record_free(record);		record = NULL;		return -1;	}	return 0;}int dun_sdp_search(bdaddr_t *src, bdaddr_t *dst, int *channel, int type){	sdp_session_t *s;	sdp_list_t *srch, *attrs, *rsp;	uuid_t svclass;	uint16_t attr;	int err;	s = sdp_connect(src, dst, 0);	if (!s) {		syslog(LOG_ERR, "Failed to connect to the SDP server. %s(%d)", 				strerror(errno), errno);		return -1;	}	switch (type) {	case MROUTER:		sdp_uuid16_create(&svclass, SERIAL_PORT_SVCLASS_ID);		break;	case ACTIVESYNC:		sdp_uuid128_create(&svclass, (void *) async_uuid);		break;	case DIALUP:		sdp_uuid16_create(&svclass, DIALUP_NET_SVCLASS_ID);		break;	default:		sdp_uuid16_create(&svclass, LAN_ACCESS_SVCLASS_ID);		break;	}	srch  = sdp_list_append(NULL, &svclass);	attr  = SDP_ATTR_PROTO_DESC_LIST;	attrs = sdp_list_append(NULL, &attr);	err = sdp_service_search_attr_req(s, srch, SDP_ATTR_REQ_INDIVIDUAL, attrs, &rsp);	sdp_close(s);	if (err)		return 0;	for(; rsp; rsp = rsp->next) {		sdp_record_t *rec = (sdp_record_t *) rsp->data;		sdp_list_t *protos;		if (!sdp_get_access_protos(rec, &protos)) {			int ch = sdp_get_proto_port(protos, RFCOMM_UUID);			if (ch > 0) {				*channel = ch;				return 1;			}		}	}	return 0;}