1 /*
2 * Copyright (C) 2014 BlueKitchen GmbH
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the copyright holders nor the names of
14 * contributors may be used to endorse or promote products derived
15 * from this software without specific prior written permission.
16 * 4. Any redistribution, use, or modification is done solely for
17 * personal benefit and not for any commercial purpose or for
18 * monetary gain.
19 *
20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN
24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * Please inquire about commercial licensing options at
34 * [email protected]
35 *
36 */
37
38 #define BTSTACK_FILE__ "l2cap_server.c"
39
40 /*
41 * l2cap_server.c
42 *
43 * Created by Matthias Ringwald on 7/14/09.
44 */
45
46 #include <unistd.h>
47 #include <stdio.h>
48 #include <stdlib.h>
49 #include <string.h>
50
51 #include "btstack_client.h"
52 #include "hci_cmd.h"
53 #include "classic/sdp_util.h"
54 #include "bluetooth_psm.h"
55
56 #ifdef _WIN32
57 #include "btstack_run_loop_windows.h"
58 #else
59 #include "btstack_run_loop_posix.h"
60 #endif
61
62 int l2cap_reg_fail = 0;
63
64 hci_con_handle_t con_handle;
65
66 uint16_t hid_control = 0;
67 uint16_t hid_interrupt = 0;
68
packet_handler(uint8_t packet_type,uint16_t channel,uint8_t * packet,uint16_t size)69 void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
70
71 bd_addr_t event_addr;
72 hci_con_handle_t con_handle;
73 uint16_t psm;
74 uint16_t local_cid;
75 uint16_t remote_cid;
76 char pin[20];
77 int i;
78 uint8_t status;
79
80 switch (packet_type) {
81
82 case L2CAP_DATA_PACKET:
83 // just dump data for now
84 printf("source cid %x -- ", channel);
85 printf_hexdump( packet, size );
86 break;
87
88 case HCI_EVENT_PACKET:
89
90 switch (hci_event_packet_get_type(packet)) {
91
92 case BTSTACK_EVENT_POWERON_FAILED:
93 printf("HCI Init failed - make sure you have turned off Bluetooth in the System Settings\n");
94 exit(1);
95 break;
96
97 case BTSTACK_EVENT_STATE:
98 // bt stack activated, get started
99 if (btstack_event_state_get_state(packet) == HCI_STATE_WORKING){
100 bt_send_cmd(&hci_write_class_of_device, 0x2540);
101 }
102 break;
103
104 case DAEMON_EVENT_L2CAP_SERVICE_REGISTERED:
105 status = packet[2];
106 psm = little_endian_read_16(packet, 3);
107 printf("DAEMON_EVENT_L2CAP_SERVICE_REGISTERED psm: 0x%02x, status: 0x%02x\n", psm, status);
108 if (status) {
109 l2cap_reg_fail = 1;
110 } else {
111 if (psm == BLUETOOTH_PSM_HID_INTERRUPT && !l2cap_reg_fail) { // The second of the two
112 bt_send_cmd(&btstack_set_discoverable, 1);
113 printf("Both PSMs registered.\n");
114 }
115 }
116 break;
117
118 case L2CAP_EVENT_INCOMING_CONNECTION:
119 l2cap_event_incoming_connection_get_address(packet, event_addr);
120 con_handle = l2cap_event_incoming_connection_get_handle(packet);
121 psm = l2cap_event_incoming_connection_get_psm(packet);
122 local_cid = l2cap_event_incoming_connection_get_local_cid(packet);
123 remote_cid = l2cap_event_incoming_connection_get_remote_cid(packet);
124 printf("L2CAP_EVENT_INCOMING_CONNECTION %s, handle 0x%02x, psm 0x%02x, local cid 0x%02x, remote cid 0x%02x\n",
125 bd_addr_to_str(event_addr), con_handle, psm, local_cid, remote_cid);
126
127 // accept
128 bt_send_cmd(&l2cap_accept_connection_cmd, local_cid);
129 break;
130
131 case HCI_EVENT_LINK_KEY_REQUEST:
132 // link key request
133 hci_event_link_key_request_get_bd_addr(packet, event_addr);
134 bt_send_cmd(&hci_link_key_request_negative_reply, &event_addr);
135 break;
136
137 case HCI_EVENT_PIN_CODE_REQUEST:
138 // inform about pin code request
139 printf("Please enter PIN here: ");
140 // avoid -Wunused-result
141 char* res = fgets(pin, 20, stdin);
142 UNUSED(res);
143 i = strlen(pin)-1;
144 if( pin[i] == '\n') {
145 pin[i] = '\0';
146 }
147 printf("PIN = '%s'\n", pin);
148 hci_event_pin_code_request_get_bd_addr(packet, event_addr);
149 bt_send_cmd(&hci_pin_code_request_reply, &event_addr, strlen(pin), pin);
150 break;
151
152 case L2CAP_EVENT_CHANNEL_OPENED:
153 // inform about new l2cap connection
154 l2cap_event_channel_opened_get_address(packet, event_addr);
155
156 if (l2cap_event_channel_opened_get_status(packet)){
157 printf("L2CAP connection to device %s failed. status code %u\n",
158 bd_addr_to_str(event_addr), l2cap_event_channel_opened_get_status(packet));
159 exit(1);
160 }
161 psm = l2cap_event_channel_opened_get_psm(packet);
162 local_cid = l2cap_event_channel_opened_get_local_cid(packet);
163 con_handle = l2cap_event_channel_opened_get_handle(packet);
164
165 printf("Channel successfully opened: %s, handle 0x%02x, psm 0x%02x, local cid 0x%02x, remote cid 0x%02x\n",
166 bd_addr_to_str(event_addr), con_handle, psm, local_cid, l2cap_event_channel_opened_get_remote_cid(packet));
167
168 if (psm == BLUETOOTH_PSM_HID_CONTROL){
169 hid_control = local_cid;
170 }
171 if (psm == BLUETOOTH_PSM_HID_INTERRUPT){
172 hid_interrupt = local_cid;
173 }
174 if (hid_control && hid_interrupt){
175 bt_send_cmd(&hci_switch_role_command, &event_addr, 0);
176 }
177 break;
178
179 case HCI_EVENT_ROLE_CHANGE: {
180 //HID Control: 0x06 bytes - SET_FEATURE_REPORT [ 53 F4 42 03 00 00 ]
181 uint8_t set_feature_report[] = { 0x53, 0xf4, 0x42, 0x03, 0x00, 0x00};
182 bt_send_l2cap(hid_control, (uint8_t*) &set_feature_report, sizeof(set_feature_report));
183 break;
184 }
185
186 case HCI_EVENT_DISCONNECTION_COMPLETE:
187 // connection closed -> quit tes app
188 printf("Basebank connection closed\n");
189
190 // exit(0);
191 break;
192
193 case HCI_EVENT_COMMAND_COMPLETE:
194 if (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_CLASS_OF_DEVICE){
195 printf("Ready\n");
196 }
197 default:
198 // other event
199 break;
200 }
201 break;
202
203 default:
204 // other packet type
205 break;
206 }
207 }
208
main(int argc,const char * argv[])209 int main (int argc, const char * argv[]){
210 #ifdef _WIN32
211 btstack_run_loop_init(btstack_run_loop_windows_get_instance());
212 #else
213 btstack_run_loop_init(btstack_run_loop_posix_get_instance());
214 #endif
215 int err = bt_open();
216 if (err) {
217 printf("Failed to open connection to BTdaemon\n");
218 return err;
219 }
220 bt_register_packet_handler(packet_handler);
221 bt_send_cmd(&l2cap_register_service_cmd, BLUETOOTH_PSM_HID_CONTROL, 250);
222 bt_send_cmd(&l2cap_register_service_cmd, BLUETOOTH_PSM_HID_INTERRUPT, 250);
223
224 bt_send_cmd(&btstack_set_power_mode, HCI_POWER_ON );
225 btstack_run_loop_execute();
226 bt_close();
227 return 0;
228 }
229