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 MATTHIAS 24 * RINGWALD 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 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_IS_COMMAND_COMPLETE(packet, 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 } 208 209 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