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/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2002-2003 Maxim Krasnyansky <maxk@qualcomm.com>
* Copyright (C) 2002-2007 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 <bluetooth/bnep.h>
#include "pand.h"
static sdp_record_t *record;
static sdp_session_t *session;
void bnep_sdp_unregister(void)
{
if (record && sdp_record_unregister(session, record))
syslog(LOG_ERR, "Service record unregistration failed.");
sdp_close(session);
}
int bnep_sdp_register(bdaddr_t *device, uint16_t role)
{
sdp_list_t *svclass, *pfseq, *apseq, *root, *aproto;
uuid_t root_uuid, pan, l2cap, bnep;
sdp_profile_desc_t profile[1];
sdp_list_t *proto[2];
sdp_data_t *v, *p;
uint16_t psm = 15, version = 0x0100;
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 allocate service record %s(%d)",
strerror(errno), errno);
sdp_close(session);
return -1;
}
sdp_uuid16_create(&root_uuid, PUBLIC_BROWSE_GROUP);
root = sdp_list_append(NULL, &root_uuid);
sdp_set_browse_groups(record, root);
sdp_list_free(root, 0);
sdp_uuid16_create(&l2cap, L2CAP_UUID);
proto[0] = sdp_list_append(NULL, &l2cap);
p = sdp_data_alloc(SDP_UINT16, &psm);
proto[0] = sdp_list_append(proto[0], p);
apseq = sdp_list_append(NULL, proto[0]);
sdp_uuid16_create(&bnep, BNEP_UUID);
proto[1] = sdp_list_append(NULL, &bnep);
v = sdp_data_alloc(SDP_UINT16, &version);
proto[1] = sdp_list_append(proto[1], v);
/* Supported protocols */
{
uint16_t ptype[4] = {
0x0800, /* IPv4 */
0x0806, /* ARP */
};
sdp_data_t *head, *pseq;
int p;
for (p = 0, head = NULL; p < 2; p++) {
sdp_data_t *data = sdp_data_alloc(SDP_UINT16, &ptype[p]);
if (head)
sdp_seq_append(head, data);
else
head = data;
}
pseq = sdp_data_alloc(SDP_SEQ16, head);
proto[1] = sdp_list_append(proto[1], pseq);
}
apseq = sdp_list_append(apseq, proto[1]);
aproto = sdp_list_append(NULL, apseq);
sdp_set_access_protos(record, aproto);
sdp_list_free(proto[0], NULL);
sdp_list_free(proto[1], NULL);
sdp_list_free(apseq, NULL);
sdp_list_free(aproto, NULL);
sdp_data_free(p);
sdp_data_free(v);
switch (role) {
case BNEP_SVC_NAP:
sdp_uuid16_create(&pan, NAP_SVCLASS_ID);
svclass = sdp_list_append(NULL, &pan);
sdp_set_service_classes(record, svclass);
sdp_uuid16_create(&profile[0].uuid, NAP_PROFILE_ID);
profile[0].version = 0x0100;
pfseq = sdp_list_append(NULL, &profile[0]);
sdp_set_profile_descs(record, pfseq);
sdp_set_info_attr(record, "Network Access Point", NULL, NULL);
break;
case BNEP_SVC_GN:
sdp_uuid16_create(&pan, GN_SVCLASS_ID);
svclass = sdp_list_append(NULL, &pan);
sdp_set_service_classes(record, svclass);
sdp_uuid16_create(&profile[0].uuid, GN_PROFILE_ID);
profile[0].version = 0x0100;
pfseq = sdp_list_append(NULL, &profile[0]);
sdp_set_profile_descs(record, pfseq);
sdp_set_info_attr(record, "Group Network Service", NULL, NULL);
break;
case BNEP_SVC_PANU:
sdp_uuid16_create(&pan, PANU_SVCLASS_ID);
svclass = sdp_list_append(NULL, &pan);
sdp_set_service_classes(record, svclass);
sdp_list_free(svclass, 0);
sdp_uuid16_create(&profile[0].uuid, PANU_PROFILE_ID);
profile[0].version = 0x0100;
pfseq = sdp_list_append(NULL, &profile[0]);
sdp_set_profile_descs(record, pfseq);
sdp_list_free(pfseq, 0);
sdp_set_info_attr(record, "PAN User", 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;
sdp_close(session);
return -1;
}
return 0;
}
/* Search for PAN service.
* Returns 1 if service is found and 0 otherwise. */
int bnep_sdp_search(bdaddr_t *src, bdaddr_t *dst, uint16_t service)
{
sdp_list_t *srch, *rsp = NULL;
sdp_session_t *s;
uuid_t svclass;
int err;
switch (service) {
case BNEP_SVC_PANU:
sdp_uuid16_create(&svclass, PANU_SVCLASS_ID);
break;
case BNEP_SVC_NAP:
sdp_uuid16_create(&svclass, NAP_SVCLASS_ID);
break;
case BNEP_SVC_GN:
sdp_uuid16_create(&svclass, GN_SVCLASS_ID);
break;
}
srch = sdp_list_append(NULL, &svclass);
s = sdp_connect(src, dst, 0);
if (!s) {
syslog(LOG_ERR, "Failed to connect to the SDP server. %s(%d)",
strerror(errno), errno);
return 0;
}
err = sdp_service_search_req(s, srch, 1, &rsp);
sdp_close(s);
/* Assume that search is successeful
* if at least one record is found */
if (!err && sdp_list_len(rsp))
return 1;
return 0;
}
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