#include <stdio.h>

#include <stdlib.h>

#include <stdint.h>

#include <unistd.h>

#include <sys/socket.h>

#include <bluetooth/bluetooth.h>

#include <bluetooth/hci.h>

#include <bluetooth/hci_lib.h>

#include <bluetooth/sdp.h>

#include <bluetooth/sdp_lib.h>

#include <bluetooth/rfcomm.h>

sdp_session_t *register_service();

int main(int argc, char **argv)

{

struct sockaddr_rc loc_addr = { 0 }, rem_addr = { 0 };

char buf[1024] = { 0 };

char str[1024] = { 0 };

int s, client, bytes_read;

sdp_session_t *session;

socklen_t opt = sizeof(rem_addr);

session = register_service();

s = socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_L2CAP);

loc_addr.rc_family = AF_BLUETOOTH;

loc_addr.rc_bdaddr = *BDADDR_ANY;

loc_addr.rc_channel = (uint8_t) 1;

printf("Trying to bind...");

fflush(stdout);

bind(s, (struct sockaddr *)&loc_addr, sizeof(loc_addr));

printf("bound\n");

fflush(stdout);

printf("Waiting for connection...");

fflush(stdout);

listen(s, 1);

client = accept(s, (struct sockaddr *)&rem_addr, &opt);

ba2str( &rem_addr.rc_bdaddr, buf );

fprintf(stderr, "accepted connection from %s\n", buf);

memset(buf, 0, sizeof(buf));

bytes_read = read(client, buf, sizeof(buf));

if( bytes_read > 0 ) {

printf("received [%s]\n", buf);

}

sprintf(str,"to Android.");

printf("sent [%s]\n",str);

write(client, str, sizeof(str));

close(client);

close(s);

sdp_close( session );

return 0;

}

sdp_session_t *register_service()

{

uint32_t svc_uuid_int[] = { 0x00000000,0x00000000,0x00000000,0x0001 };

uint8_t rfcomm_channel = 1;

const char *service_name = "Remote Host";

const char *service_dsc = "What the remote should be connecting to.";

const char *service_prov = "Your mother";

uuid_t root_uuid, l2cap_uuid, rfcomm_uuid, svc_uuid;

sdp_list_t *l2cap_list = 0,

*rfcomm_list = 0,

*root_list = 0,

*proto_list = 0,

*access_proto_list = 0;

sdp_data_t *channel = 0, *psm = 0;

sdp_record_t *record = sdp_record_alloc();

// set the general service ID

sdp_uuid128_create( &svc_uuid, &svc_uuid_int );

sdp_set_service_id( record, svc_uuid );

sdp_list_t service_class = {NULL, &svc_uuid};

sdp_set_service_classes( record, &service_class);

// make the service record publicly browsable

sdp_uuid16_create(&root_uuid, PUBLIC_BROWSE_GROUP);

root_list = sdp_list_append(0, &root_uuid);

sdp_set_browse_groups( record, root_list );

// set l2cap information

sdp_uuid16_create(&l2cap_uuid, L2CAP_UUID);

l2cap_list = sdp_list_append( 0, &l2cap_uuid );

proto_list = sdp_list_append( 0, l2cap_list );

// set rfcomm information

sdp_uuid16_create(&rfcomm_uuid, RFCOMM_UUID);

channel = sdp_data_alloc(SDP_UINT8, &rfcomm_channel);

rfcomm_list = sdp_list_append( 0, &rfcomm_uuid );

sdp_list_append( rfcomm_list, channel );

sdp_list_append( proto_list, rfcomm_list );

// attach protocol information to service record

access_proto_list = sdp_list_append( 0, proto_list );

sdp_set_access_protos( record, access_proto_list );

// set the name, provider, and description

sdp_set_info_attr(record, service_name, service_prov, service_dsc);

int err = 0;

sdp_session_t *session = 0;

// connect to the local SDP server, register the service record, and

// disconnect

session = sdp_connect( BDADDR_ANY, BDADDR_LOCAL, SDP_RETRY_IF_BUSY );

err = sdp_record_register(session, record, 0);

// cleanup

//sdp_data_free( channel );

sdp_list_free( l2cap_list, 0 );

sdp_list_free( rfcomm_list, 0 );

sdp_list_free( root_list, 0 );

sdp_list_free( access_proto_list, 0 );

return session;

}