/*
* Copyright (C) 2014 BlueKitchen GmbH
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holders nor the names of
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
* 4. Any redistribution, use, or modification is done solely for
* personal benefit and not for any commercial purpose or for
* monetary gain.
*
* THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
* RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* Please inquire about commercial licensing options at
* contact@bluekitchen-gmbh.com
*
*/
#define BTSTACK_FILE__ "l2cap_server.c"
/*
* l2cap_server.c
*
* Created by Matthias Ringwald on 7/14/09.
*/
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "btstack_client.h"
#include "hci_cmd.h"
#include "classic/sdp_util.h"
#include "bluetooth_psm.h"
#ifdef _WIN32
#include "btstack_run_loop_windows.h"
#else
#include "btstack_run_loop_posix.h"
#endif
int l2cap_reg_fail = 0;
hci_con_handle_t con_handle;
uint16_t hid_control = 0;
uint16_t hid_interrupt = 0;
void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
bd_addr_t event_addr;
hci_con_handle_t con_handle;
uint16_t psm;
uint16_t local_cid;
uint16_t remote_cid;
char pin[20];
int i;
uint8_t status;
switch (packet_type) {
case L2CAP_DATA_PACKET:
// just dump data for now
printf("source cid %x -- ", channel);
printf_hexdump( packet, size );
break;
case HCI_EVENT_PACKET:
switch (hci_event_packet_get_type(packet)) {
case BTSTACK_EVENT_POWERON_FAILED:
printf("HCI Init failed - make sure you have turned off Bluetooth in the System Settings\n");
exit(1);
break;
case BTSTACK_EVENT_STATE:
// bt stack activated, get started
if (btstack_event_state_get_state(packet) == HCI_STATE_WORKING){
bt_send_cmd(&hci_write_class_of_device, 0x2540);
}
break;
case DAEMON_EVENT_L2CAP_SERVICE_REGISTERED:
status = packet[2];
psm = little_endian_read_16(packet, 3);
printf("DAEMON_EVENT_L2CAP_SERVICE_REGISTERED psm: 0x%02x, status: 0x%02x\n", psm, status);
if (status) {
l2cap_reg_fail = 1;
} else {
if (psm == BLUETOOTH_PSM_HID_INTERRUPT && !l2cap_reg_fail) { // The second of the two
bt_send_cmd(&btstack_set_discoverable, 1);
printf("Both PSMs registered.\n");
}
}
break;
case L2CAP_EVENT_INCOMING_CONNECTION:
l2cap_event_incoming_connection_get_address(packet, event_addr);
con_handle = l2cap_event_incoming_connection_get_handle(packet);
psm = l2cap_event_incoming_connection_get_psm(packet);
local_cid = l2cap_event_incoming_connection_get_local_cid(packet);
remote_cid = l2cap_event_incoming_connection_get_remote_cid(packet);
printf("L2CAP_EVENT_INCOMING_CONNECTION %s, handle 0x%02x, psm 0x%02x, local cid 0x%02x, remote cid 0x%02x\n",
bd_addr_to_str(event_addr), con_handle, psm, local_cid, remote_cid);
// accept
bt_send_cmd(&l2cap_accept_connection_cmd, local_cid);
break;
case HCI_EVENT_LINK_KEY_REQUEST:
// link key request
hci_event_link_key_request_get_bd_addr(packet, event_addr);
bt_send_cmd(&hci_link_key_request_negative_reply, &event_addr);
break;
case HCI_EVENT_PIN_CODE_REQUEST:
// inform about pin code request
printf("Please enter PIN here: ");
// avoid -Wunused-result
char* res = fgets(pin, 20, stdin);
UNUSED(res);
i = strlen(pin)-1;
if( pin[i] == '\n') {
pin[i] = '\0';
}
printf("PIN = '%s'\n", pin);
hci_event_pin_code_request_get_bd_addr(packet, event_addr);
bt_send_cmd(&hci_pin_code_request_reply, &event_addr, strlen(pin), pin);
break;
case L2CAP_EVENT_CHANNEL_OPENED:
// inform about new l2cap connection
l2cap_event_channel_opened_get_address(packet, event_addr);
if (l2cap_event_channel_opened_get_status(packet)){
printf("L2CAP connection to device %s failed. status code %u\n",
bd_addr_to_str(event_addr), l2cap_event_channel_opened_get_status(packet));
exit(1);
}
psm = l2cap_event_channel_opened_get_psm(packet);
local_cid = l2cap_event_channel_opened_get_local_cid(packet);
con_handle = l2cap_event_channel_opened_get_handle(packet);
printf("Channel successfully opened: %s, handle 0x%02x, psm 0x%02x, local cid 0x%02x, remote cid 0x%02x\n",
bd_addr_to_str(event_addr), con_handle, psm, local_cid, l2cap_event_channel_opened_get_remote_cid(packet));
if (psm == BLUETOOTH_PSM_HID_CONTROL){
hid_control = local_cid;
}
if (psm == BLUETOOTH_PSM_HID_INTERRUPT){
hid_interrupt = local_cid;
}
if (hid_control && hid_interrupt){
bt_send_cmd(&hci_switch_role_command, &event_addr, 0);
}
break;
case HCI_EVENT_ROLE_CHANGE: {
//HID Control: 0x06 bytes - SET_FEATURE_REPORT [ 53 F4 42 03 00 00 ]
uint8_t set_feature_report[] = { 0x53, 0xf4, 0x42, 0x03, 0x00, 0x00};
bt_send_l2cap(hid_control, (uint8_t*) &set_feature_report, sizeof(set_feature_report));
break;
}
case HCI_EVENT_DISCONNECTION_COMPLETE:
// connection closed -> quit tes app
printf("Basebank connection closed\n");
// exit(0);
break;
case HCI_EVENT_COMMAND_COMPLETE:
if (HCI_EVENT_IS_COMMAND_COMPLETE(packet, hci_write_class_of_device)) {
printf("Ready\n");
}
default:
// other event
break;
}
break;
default:
// other packet type
break;
}
}
int main (int argc, const char * argv[]){
#ifdef _WIN32
btstack_run_loop_init(btstack_run_loop_windows_get_instance());
#else
btstack_run_loop_init(btstack_run_loop_posix_get_instance());
#endif
int err = bt_open();
if (err) {
printf("Failed to open connection to BTdaemon\n");
return err;
}
bt_register_packet_handler(packet_handler);
bt_send_cmd(&l2cap_register_service_cmd, BLUETOOTH_PSM_HID_CONTROL, 250);
bt_send_cmd(&l2cap_register_service_cmd, BLUETOOTH_PSM_HID_INTERRUPT, 250);
bt_send_cmd(&btstack_set_power_mode, HCI_POWER_ON );
btstack_run_loop_execute();
bt_close();
return 0;
}