C++ sdp_data_alloc函数代码示例

static sdp_record_t *a2dp_record(void)
{
	sdp_list_t *svclass_id, *pfseq, *apseq, *root;
	uuid_t root_uuid, l2cap_uuid, avdtp_uuid, a2dp_uuid;
	sdp_profile_desc_t profile[1];
	sdp_list_t *aproto, *proto[2];
	sdp_record_t *record;
	sdp_data_t *psm, *version, *features;
	uint16_t lp = AVDTP_UUID;
	uint16_t a2dp_ver = 0x0103, avdtp_ver = 0x0103, feat = 0x000f;

	record = sdp_record_alloc();
	if (!record)
		return NULL;

	sdp_uuid16_create(&root_uuid, PUBLIC_BROWSE_GROUP);
	root = sdp_list_append(NULL, &root_uuid);
	sdp_set_browse_groups(record, root);

	sdp_uuid16_create(&a2dp_uuid, AUDIO_SOURCE_SVCLASS_ID);
	svclass_id = sdp_list_append(NULL, &a2dp_uuid);
	sdp_set_service_classes(record, svclass_id);

	sdp_uuid16_create(&profile[0].uuid, ADVANCED_AUDIO_PROFILE_ID);
	profile[0].version = a2dp_ver;
	pfseq = sdp_list_append(NULL, &profile[0]);
	sdp_set_profile_descs(record, pfseq);

	sdp_uuid16_create(&l2cap_uuid, L2CAP_UUID);
	proto[0] = sdp_list_append(NULL, &l2cap_uuid);
	psm = sdp_data_alloc(SDP_UINT16, &lp);
	proto[0] = sdp_list_append(proto[0], psm);
	apseq = sdp_list_append(NULL, proto[0]);

	sdp_uuid16_create(&avdtp_uuid, AVDTP_UUID);
	proto[1] = sdp_list_append(NULL, &avdtp_uuid);
	version = sdp_data_alloc(SDP_UINT16, &avdtp_ver);
	proto[1] = sdp_list_append(proto[1], version);
	apseq = sdp_list_append(apseq, proto[1]);

	aproto = sdp_list_append(NULL, apseq);
	sdp_set_access_protos(record, aproto);

	features = sdp_data_alloc(SDP_UINT16, &feat);
	sdp_attr_add(record, SDP_ATTR_SUPPORTED_FEATURES, features);

	sdp_set_info_attr(record, "Audio Source", NULL, NULL);

	sdp_data_free(psm);
	sdp_data_free(version);
	sdp_list_free(proto[0], NULL);
	sdp_list_free(proto[1], NULL);
	sdp_list_free(apseq, NULL);
	sdp_list_free(pfseq, NULL);
	sdp_list_free(aproto, NULL);
	sdp_list_free(root, NULL);
	sdp_list_free(svclass_id, NULL);

	return record;
}

static sdp_list_t *mdeps_to_sdp_features(struct mdep_cfg *mdep)
{
	sdp_data_t *mdepid, *dtype = NULL, *role = NULL, *descr = NULL;
	sdp_list_t *f_list = NULL;

	DBG("");

	mdepid = sdp_data_alloc(SDP_UINT8, &mdep->id);
	if (!mdepid)
		return NULL;

	dtype = sdp_data_alloc(SDP_UINT16, &mdep->data_type);
	if (!dtype)
		goto fail;

	role = sdp_data_alloc(SDP_UINT8, &mdep->role);
	if (!role)
		goto fail;

	if (mdep->descr) {
		descr = sdp_data_alloc(SDP_TEXT_STR8, mdep->descr);
		if (!descr)
			goto fail;
	}

	f_list = sdp_list_append(NULL, mdepid);
	if (!f_list)
		goto fail;

	if (!sdp_list_append(f_list, dtype))
		goto fail;

	if (!sdp_list_append(f_list, role))
		goto fail;

	if (descr && !sdp_list_append(f_list, descr))
		goto fail;

	return f_list;

fail:
	sdp_list_free(f_list, NULL);

	if (mdepid)
		sdp_data_free(mdepid);

	if (dtype)
		sdp_data_free(dtype);

	if (role)
		sdp_data_free(role);

	if (descr)
		sdp_data_free(descr);

	return NULL;
}

static sdp_list_t *app_to_sdplist(struct hdp_application *app)
{
	sdp_data_t *mdepid,
		*dtype = NULL,
		*role = NULL,
		*desc = NULL;
	sdp_list_t *f_list = NULL;

	mdepid = sdp_data_alloc(SDP_UINT8, &app->id);
	if (mdepid == NULL)
		return NULL;

	dtype = sdp_data_alloc(SDP_UINT16, &app->data_type);
	if (dtype == NULL)
		goto fail;

	role = sdp_data_alloc(SDP_UINT8, &app->role);
	if (role == NULL)
		goto fail;

	if (app->description != NULL) {
		desc = sdp_data_alloc(SDP_TEXT_STR8, app->description);
		if (desc == NULL)
			goto fail;
	}

	f_list = sdp_list_append(NULL, mdepid);
	if (f_list == NULL)
		goto fail;

	if (sdp_list_append(f_list, dtype) == NULL)
		goto fail;

	if (sdp_list_append(f_list, role) == NULL)
		goto fail;

	if (desc != NULL)
		if (sdp_list_append(f_list, desc) == NULL)
			goto fail;

	return f_list;

fail:
	if (f_list != NULL)
		sdp_list_free(f_list, NULL);
	if (mdepid != NULL)
		sdp_data_free(mdepid);
	if (dtype != NULL)
		sdp_data_free(dtype);
	if (role != NULL)
		sdp_data_free(role);
	if (desc != NULL)
		sdp_data_free(desc);

	return NULL;
}

static sdp_list_t *app_to_sdplist(struct mcap_application *app)
{ DBG("");
	sdp_data_t *mdepid,
		*dtype = NULL,
		*role = NULL,
		*desc = NULL;
	sdp_list_t *f_list = NULL;

	mdepid = sdp_data_alloc(SDP_UINT8, &app->id);
	if (!mdepid)
		return NULL;

	dtype = sdp_data_alloc(SDP_UINT16, &app->data_type);
	if (!dtype)
		goto fail;

	role = sdp_data_alloc(SDP_UINT8, &app->role);
	if (!role)
		goto fail;

	if (app->description) {
		desc = sdp_data_alloc(SDP_TEXT_STR8, app->description);
		if (!desc)
			goto fail;
	}

	f_list = sdp_list_append(NULL, mdepid);
	if (!f_list)
		goto fail;

	if (!sdp_list_append(f_list, dtype))
		goto fail;

	if (!sdp_list_append(f_list, role))
		goto fail;

	if (desc)
		if (!sdp_list_append(f_list, desc))
			goto fail;

	return f_list;

fail:
	if (f_list)
		sdp_list_free(f_list, NULL);
	if (mdepid)
		sdp_data_free(mdepid);
	if (dtype)
		sdp_data_free(dtype);
	if (role)
		sdp_data_free(role);
	if (desc)
		sdp_data_free(desc);

	return NULL;
}

/*
 * The service database state is an attribute of the service record
 * of the SDP server itself. This attribute is guaranteed to
 * change if any of the contents of the service repository
 * changes. This function updates the timestamp of value of
 * the svcDBState attribute
 * Set the SDP server DB. Simply a timestamp which is the marker
 * when the DB was modified.
 */
static void update_db_timestamp(void)
{
	if (fixed_dbts) {
		sdp_data_t *d = sdp_data_alloc(SDP_UINT32, &fixed_dbts);
		sdp_attr_replace(server, SDP_ATTR_SVCDB_STATE, d);
	} else {
		uint32_t dbts = sdp_get_time();
		sdp_data_t *d = sdp_data_alloc(SDP_UINT32, &dbts);
		sdp_attr_replace(server, SDP_ATTR_SVCDB_STATE, d);
	}
}

static sdp_record_t *create_rfcomm_record(uint8_t chan, uuid_t *uuid,
						const char *svc_name,
						bool has_obex)
{
	sdp_list_t *svclass_id;
	sdp_list_t *seq, *proto_seq, *pbg_seq;
	sdp_list_t *proto[3];
	uuid_t l2cap_uuid, rfcomm_uuid, obex_uuid, pbg_uuid;
	sdp_data_t *channel;
	sdp_record_t *record;

	record = sdp_record_alloc();
	if (!record)
		return NULL;

	record->handle =  sdp_next_handle();

	svclass_id = sdp_list_append(NULL, uuid);
	sdp_set_service_classes(record, svclass_id);

	sdp_uuid16_create(&l2cap_uuid, L2CAP_UUID);
	proto[0] = sdp_list_append(NULL, &l2cap_uuid);
	seq = sdp_list_append(NULL, proto[0]);

	sdp_uuid16_create(&rfcomm_uuid, RFCOMM_UUID);
	proto[1] = sdp_list_append(NULL, &rfcomm_uuid);
	channel = sdp_data_alloc(SDP_UINT8, &chan);
	proto[1] = sdp_list_append(proto[1], channel);
	seq = sdp_list_append(seq, proto[1]);

	if (has_obex) {
		sdp_uuid16_create(&obex_uuid, OBEX_UUID);
		proto[2] = sdp_list_append(NULL, &obex_uuid);
		seq = sdp_list_append(seq, proto[2]);
	}

	proto_seq = sdp_list_append(NULL, seq);
	sdp_set_access_protos(record, proto_seq);

	sdp_uuid16_create(&pbg_uuid, PUBLIC_BROWSE_GROUP);
	pbg_seq = sdp_list_append(NULL, &pbg_uuid);
	sdp_set_browse_groups(record, pbg_seq);

	if (svc_name)
		sdp_set_info_attr(record, svc_name, NULL, NULL);

	sdp_data_free(channel);
	sdp_list_free(proto[0], NULL);
	sdp_list_free(proto[1], NULL);
	if (has_obex)
		sdp_list_free(proto[2], NULL);
	sdp_list_free(seq, NULL);
	sdp_list_free(proto_seq, NULL);
	sdp_list_free(pbg_seq, NULL);
	sdp_list_free(svclass_id, NULL);

	return record;
}

void register_device_id(const uint16_t vendor, const uint16_t product,
						const uint16_t version)
{
	const uint16_t spec = 0x0102, source = 0x0002;
	const uint8_t primary = 1;
	sdp_list_t *class_list, *group_list, *profile_list;
	uuid_t class_uuid, group_uuid;
	sdp_data_t *sdp_data, *primary_data, *source_data;
	sdp_data_t *spec_data, *vendor_data, *product_data, *version_data;
	sdp_profile_desc_t profile;
	sdp_record_t *record = sdp_record_alloc();

	info("Adding device id record for %04x:%04x", vendor, product);

	btd_manager_set_did(vendor, product, version);

	record->handle = sdp_next_handle();

	sdp_record_add(BDADDR_ANY, record);
	sdp_data = sdp_data_alloc(SDP_UINT32, &record->handle);
	sdp_attr_add(record, SDP_ATTR_RECORD_HANDLE, sdp_data);

	sdp_uuid16_create(&class_uuid, PNP_INFO_SVCLASS_ID);
	class_list = sdp_list_append(0, &class_uuid);
	sdp_set_service_classes(record, class_list);
	sdp_list_free(class_list, NULL);

	sdp_uuid16_create(&group_uuid, PUBLIC_BROWSE_GROUP);
	group_list = sdp_list_append(NULL, &group_uuid);
	sdp_set_browse_groups(record, group_list);
	sdp_list_free(group_list, NULL);

	sdp_uuid16_create(&profile.uuid, PNP_INFO_PROFILE_ID);
	profile.version = spec;
	profile_list = sdp_list_append(NULL, &profile);
	sdp_set_profile_descs(record, profile_list);
	sdp_list_free(profile_list, NULL);

	spec_data = sdp_data_alloc(SDP_UINT16, &spec);
	sdp_attr_add(record, 0x0200, spec_data);

	vendor_data = sdp_data_alloc(SDP_UINT16, &vendor);
	sdp_attr_add(record, 0x0201, vendor_data);

	product_data = sdp_data_alloc(SDP_UINT16, &product);
	sdp_attr_add(record, 0x0202, product_data);

	version_data = sdp_data_alloc(SDP_UINT16, &version);
	sdp_attr_add(record, 0x0203, version_data);

	primary_data = sdp_data_alloc(SDP_BOOL, &primary);
	sdp_attr_add(record, 0x0204, primary_data);

	source_data = sdp_data_alloc(SDP_UINT16, &source);
	sdp_attr_add(record, 0x0205, source_data);

	update_db_timestamp();
}

static sdp_record_t *create_sap_record(uint8_t channel)
{
	sdp_list_t *apseq, *aproto, *profiles, *proto[2], *root, *svclass_id;
	uuid_t sap_uuid, gt_uuid, root_uuid, l2cap, rfcomm;
	sdp_profile_desc_t profile;
	sdp_record_t *record;
	sdp_data_t *ch;

	record = sdp_record_alloc();
	if (!record)
		return NULL;

	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, NULL);

	sdp_uuid16_create(&sap_uuid, SAP_SVCLASS_ID);
	svclass_id = sdp_list_append(NULL, &sap_uuid);
	sdp_uuid16_create(&gt_uuid, GENERIC_TELEPHONY_SVCLASS_ID);
	svclass_id = sdp_list_append(svclass_id, &gt_uuid);

	sdp_set_service_classes(record, svclass_id);
	sdp_list_free(svclass_id, NULL);

	sdp_uuid16_create(&profile.uuid, SAP_PROFILE_ID);
	profile.version = SAP_VERSION;
	profiles = sdp_list_append(NULL, &profile);
	sdp_set_profile_descs(record, profiles);
	sdp_list_free(profiles, NULL);

	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);
	ch = sdp_data_alloc(SDP_UINT8, &channel);
	proto[1] = sdp_list_append(proto[1], ch);
	apseq = sdp_list_append(apseq, proto[1]);

	aproto = sdp_list_append(NULL, apseq);
	sdp_set_access_protos(record, aproto);

	sdp_set_info_attr(record, "SIM Access Server",
			NULL, NULL);

	sdp_data_free(ch);
	sdp_list_free(proto[0], NULL);
	sdp_list_free(proto[1], NULL);
	sdp_list_free(apseq, NULL);
	sdp_list_free(aproto, NULL);

	return record;
}

static sdp_record_t *hfp_hs_record(uint8_t ch)
{
	sdp_list_t *svclass_id, *pfseq, *apseq, *root;
	uuid_t root_uuid, svclass_uuid, ga_svclass_uuid;
	uuid_t l2cap_uuid, rfcomm_uuid;
	sdp_profile_desc_t profile;
	sdp_record_t *record;
	sdp_list_t *aproto, *proto[2];
	sdp_data_t *channel;

	record = sdp_record_alloc();
	if (!record)
		return NULL;

	sdp_uuid16_create(&root_uuid, PUBLIC_BROWSE_GROUP);
	root = sdp_list_append(0, &root_uuid);
	sdp_set_browse_groups(record, root);

	sdp_uuid16_create(&svclass_uuid, HANDSFREE_SVCLASS_ID);
	svclass_id = sdp_list_append(0, &svclass_uuid);
	sdp_uuid16_create(&ga_svclass_uuid, GENERIC_AUDIO_SVCLASS_ID);
	svclass_id = sdp_list_append(svclass_id, &ga_svclass_uuid);
	sdp_set_service_classes(record, svclass_id);

	sdp_uuid16_create(&profile.uuid, HANDSFREE_PROFILE_ID);
	profile.version = 0x0105;
	pfseq = sdp_list_append(0, &profile);
	sdp_set_profile_descs(record, pfseq);

	sdp_uuid16_create(&l2cap_uuid, L2CAP_UUID);
	proto[0] = sdp_list_append(0, &l2cap_uuid);
	apseq = sdp_list_append(0, proto[0]);

	sdp_uuid16_create(&rfcomm_uuid, RFCOMM_UUID);
	proto[1] = sdp_list_append(0, &rfcomm_uuid);
	channel = sdp_data_alloc(SDP_UINT8, &ch);
	proto[1] = sdp_list_append(proto[1], channel);
	apseq = sdp_list_append(apseq, proto[1]);

	aproto = sdp_list_append(0, apseq);
	sdp_set_access_protos(record, aproto);

	sdp_set_info_attr(record, "Hands-Free", 0, 0);

	sdp_data_free(channel);
	sdp_list_free(proto[0], 0);
	sdp_list_free(proto[1], 0);
	sdp_list_free(apseq, 0);
	sdp_list_free(pfseq, 0);
	sdp_list_free(aproto, 0);
	sdp_list_free(root, 0);
	sdp_list_free(svclass_id, 0);

	return record;
}

static sdp_record_t *proxy_record_new(const char *uuid128, uint8_t channel)
{
    sdp_list_t *apseq, *aproto, *profiles, *proto[2], *root, *svclass_id;
    uuid_t uuid, root_uuid, l2cap, rfcomm;
    sdp_profile_desc_t profile;
    sdp_record_t *record;
    sdp_data_t *ch;

    record = sdp_record_alloc();
    if (!record)
        return NULL;

    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, NULL);

    bt_string2uuid(&uuid, uuid128);
    svclass_id = sdp_list_append(NULL, &uuid);
    sdp_set_service_classes(record, svclass_id);
    sdp_list_free(svclass_id, NULL);

    sdp_uuid16_create(&profile.uuid, SERIAL_PORT_PROFILE_ID);
    profile.version = 0x0100;
    profiles = sdp_list_append(NULL, &profile);
    sdp_set_profile_descs(record, profiles);
    sdp_list_free(profiles, NULL);

    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);
    ch = sdp_data_alloc(SDP_UINT8, &channel);
    proto[1] = sdp_list_append(proto[1], ch);
    apseq = sdp_list_append(apseq, proto[1]);

    aproto = sdp_list_append(NULL, apseq);
    sdp_set_access_protos(record, aproto);

    add_lang_attr(record);

    sdp_set_info_attr(record, "Port Proxy Entity",
                      NULL, "Port Proxy Entity");

    sdp_data_free(ch);
    sdp_list_free(proto[0], NULL);
    sdp_list_free(proto[1], NULL);
    sdp_list_free(apseq, NULL);
    sdp_list_free(aproto, NULL);

    return record;
}

static sdp_record_t *dun_record(uint8_t ch)
{
	sdp_list_t *svclass_id, *pfseq, *apseq, *root, *aproto;
	uuid_t root_uuid, dun, gn, l2cap, rfcomm;
	sdp_profile_desc_t profile;
	sdp_list_t *proto[2];
	sdp_record_t *record;
	sdp_data_t *channel;

	record = sdp_record_alloc();
	if (!record)
		return NULL;

	sdp_uuid16_create(&root_uuid, PUBLIC_BROWSE_GROUP);
	root = sdp_list_append(NULL, &root_uuid);
	sdp_set_browse_groups(record, root);

	sdp_uuid16_create(&dun, DIALUP_NET_SVCLASS_ID);
	svclass_id = sdp_list_append(NULL, &dun);
	sdp_uuid16_create(&gn,  GENERIC_NETWORKING_SVCLASS_ID);
	svclass_id = sdp_list_append(svclass_id, &gn);
	sdp_set_service_classes(record, svclass_id);

	sdp_uuid16_create(&profile.uuid, DIALUP_NET_PROFILE_ID);
	profile.version = 0x0100;
	pfseq = sdp_list_append(NULL, &profile);
	sdp_set_profile_descs(record, pfseq);

	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);
	channel = sdp_data_alloc(SDP_UINT8, &ch);
	proto[1] = sdp_list_append(proto[1], channel);
	apseq = sdp_list_append(apseq, proto[1]);

	aproto = sdp_list_append(0, apseq);
	sdp_set_access_protos(record, aproto);

	sdp_set_info_attr(record, "Dial-Up Networking", 0, 0);

	sdp_data_free(channel);
	sdp_list_free(root, NULL);
	sdp_list_free(svclass_id, NULL);
	sdp_list_free(proto[0], NULL);
	sdp_list_free(proto[1], NULL);
	sdp_list_free(pfseq, NULL);
	sdp_list_free(apseq, NULL);
	sdp_list_free(aproto, NULL);

	return record;
}

/*
 * The SDP server must present its own service record to
 * the service repository. This can be accessed by service
 * discovery clients. This method constructs a service record
 * and stores it in the repository
 */
void register_server_service(void)
{
	sdp_list_t *classIDList;
	uuid_t classID;
	void **versions, **versionDTDs;
	uint8_t dtd;
	sdp_data_t *pData;
	int i;

	server = sdp_record_alloc();
	server->pattern = NULL;

	/* Force the record to be SDP_SERVER_RECORD_HANDLE */
	server->handle = SDP_SERVER_RECORD_HANDLE;

	sdp_record_add(BDADDR_ANY, server);
	sdp_attr_add(server, SDP_ATTR_RECORD_HANDLE,
				sdp_data_alloc(SDP_UINT32, &server->handle));

	sdp_uuid16_create(&classID, SDP_SERVER_SVCLASS_ID);
	classIDList = sdp_list_append(0, &classID);
	sdp_set_service_classes(server, classIDList);
	sdp_list_free(classIDList, 0);

	/*
	 * Set the version numbers supported, these are passed as arguments
	 * to the server on command line. Now defaults to 1.0
	 * Build the version number sequence first
	 */
	versions = malloc(sdpServerVnumEntries * sizeof(void *));
	versionDTDs = malloc(sdpServerVnumEntries * sizeof(void *));
	dtd = SDP_UINT16;
	for (i = 0; i < sdpServerVnumEntries; i++) {
		uint16_t *version = malloc(sizeof(uint16_t));
		*version = sdpVnumArray[i].major;
		*version = (*version << 8);
		*version |= sdpVnumArray[i].minor;
		versions[i] = version;
		versionDTDs[i] = &dtd;
	}
	pData = sdp_seq_alloc(versionDTDs, versions, sdpServerVnumEntries);
	for (i = 0; i < sdpServerVnumEntries; i++)
		free(versions[i]);
	free(versions);
	free(versionDTDs);
	sdp_attr_add(server, SDP_ATTR_VERSION_NUM_LIST, pData);

	update_db_timestamp();
}

static gboolean register_data_exchange_spec(sdp_record_t *record)
{
	sdp_data_t *spec;
	uint8_t data_spec = DATA_EXCHANGE_SPEC_11073;
	/* As by now 11073 is the only supported we set it by default */

	spec = sdp_data_alloc(SDP_UINT8, &data_spec);
	if (spec == NULL)
		return FALSE;

	if (sdp_attr_add(record, SDP_ATTR_DATA_EXCHANGE_SPEC, spec) < 0) {
		sdp_data_free(spec);
		return FALSE;
	}

	return TRUE;
}

static gboolean register_mcap_features(sdp_record_t *sdp_record)
{
	sdp_data_t *mcap_proc;
	uint8_t mcap_sup_proc = MCAP_SUP_PROC;

	mcap_proc = sdp_data_alloc(SDP_UINT8, &mcap_sup_proc);
	if (mcap_proc == NULL)
		return FALSE;

	if (sdp_attr_add(sdp_record, SDP_ATTR_MCAP_SUPPORTED_PROCEDURES,
							mcap_proc) < 0) {
		sdp_data_free(mcap_proc);
		return FALSE;
	}

	return TRUE;
}

static int register_data_exchange_spec(sdp_record_t *rec)
{
	sdp_data_t *spec;
	uint8_t data_spec = DATA_EXCHANGE_SPEC_11073;
	/* As of now only 11073 is supported, so we set it as default */

	DBG("");

	spec = sdp_data_alloc(SDP_UINT8, &data_spec);
	if (!spec)
		return -1;

	if (sdp_attr_add(rec, SDP_ATTR_DATA_EXCHANGE_SPEC, spec) < 0) {
		sdp_data_free(spec);
		return -1;
	}

	return 0;
}