1 /* 2 * Copyright (C) 2022 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 #ifndef GOEP_SERVER_H 39 #define GOEP_SERVER_H 40 41 #if defined __cplusplus 42 extern "C" { 43 #endif 44 45 #include "btstack_config.h" 46 #include <stdint.h> 47 48 #ifdef ENABLE_GOEP_L2CAP 49 #ifndef GOEP_SERVER_ERTM_BUFFER 50 #define GOEP_SERVER_ERTM_BUFFER 1000 51 #endif 52 #endif 53 54 /* API_START */ 55 56 typedef enum { 57 GOEP_SERVER_IDLE, 58 GOEP_SERVER_W4_ACCEPT_REJECT, 59 GOEP_SERVER_W4_CONNECTED, 60 GOEP_SERVER_CONNECTED, 61 GOEP_SERVER_OUTGOING_BUFFER_RESERVED, 62 } goep_server_state_t; 63 64 typedef enum { 65 GOEP_CONNECTION_RFCOMM = 0, 66 GOEP_CONNECTION_L2CAP, 67 } goep_connection_type_t; 68 69 typedef struct { 70 // linked list - assert: first field 71 btstack_linked_item_t item; 72 73 btstack_packet_handler_t callback; 74 uint8_t rfcomm_channel; 75 uint16_t l2cap_psm; 76 } goep_server_service_t; 77 78 // type 79 typedef struct { 80 // linked list - assert: first field 81 btstack_linked_item_t item; 82 83 uint16_t goep_cid; 84 goep_server_state_t state; 85 goep_connection_type_t type; 86 uint16_t bearer_cid; 87 uint16_t bearer_mtu; 88 btstack_packet_handler_t callback; 89 uint32_t obex_connection_id; 90 91 #ifdef ENABLE_GOEP_L2CAP 92 uint8_t ertm_buffer[GOEP_SERVER_ERTM_BUFFER]; 93 #endif 94 95 } goep_server_connection_t; 96 97 /** 98 * Init GOEP Server 99 */ 100 void goep_server_init(void); 101 102 103 /** 104 * Register OBEX Service 105 * @param packet_handler 106 * @param rfcomm_channel 107 * @param rfcomm_max_frame_size 108 * @param l2cap_psm 109 * @param l2cap_mtu 110 * @param security_level 111 * @return status 112 */ 113 uint8_t goep_server_register_service(btstack_packet_handler_t packet_handler, uint8_t rfcomm_channel, uint16_t rfcomm_max_frame_size, 114 uint16_t l2cap_psm, uint16_t l2cap_mtu, gap_security_level_t security_level); 115 116 /** 117 * @brief Accepts incoming GOEP connection. 118 * @param goep_cid 119 * @return status 120 */ 121 uint8_t goep_server_accept_connection(uint16_t goep_cid); 122 123 /** 124 * @brief Deny incoming GOEP connection. 125 * @param goep_cid 126 * @return status 127 */ 128 uint8_t goep_server_decline_connection(uint16_t goep_cid); 129 130 /** 131 * Request GOEP_SUBEVENT_CAN_SEND_NOW 132 * @param goep_cid 133 * @return status 134 */ 135 uint8_t goep_server_request_can_send_now(uint16_t goep_cid); 136 137 /** 138 * @brief Start Connect response 139 * @param goep_cid 140 * @param obex_version_number 141 * @param flags 142 * @param maximum_obex_packet_length 143 * @return status 144 */ 145 uint8_t goep_server_response_create_connect(uint16_t goep_cid, uint8_t obex_version_number, uint8_t flags, uint16_t maximum_obex_packet_length); 146 147 /** 148 * @brief Start General response 149 * @note response code is set by goep_server_execute 150 * @param goep_cid 151 * @param opcode 152 * @return status 153 */ 154 uint8_t goep_server_response_create_general(uint16_t goep_cid); 155 156 /** 157 * @brief Get max size of body data that can be added to current response with goep_server_header_add_end_of_body 158 * @param goep_cid 159 * @param data 160 * @param length 161 * @return size in bytes or 0 162 */ 163 uint16_t goep_server_response_get_max_body_size(uint16_t goep_cid); 164 165 /** 166 * @brief Add who header to current response 167 * @param goep_cid 168 * @param who - 16 bytes 169 * @return status 170 */ 171 uint8_t goep_server_header_add_who(uint16_t goep_cid, const uint8_t * who); 172 173 /** 174 * @brief Add end_of_body header to current response 175 * @param goep_cid 176 * @param end_of_body 177 * @param length 178 * @return status 179 */ 180 uint8_t goep_server_header_add_end_of_body(uint16_t goep_cid, const uint8_t * end_of_body, uint16_t length); 181 182 /** 183 * @brief Add SRM ENABLE header to current response 184 * @param goep_cid 185 * @return 186 */ 187 uint8_t goep_server_header_add_srm_enable(uint16_t goep_cid); 188 189 190 /** 191 * @brief Add application parameters header to current request 192 * @param goep_cid 193 * @param data 194 * @param length 195 * @return 196 */ 197 uint8_t goep_server_header_add_application_parameters(uint16_t goep_cid, const uint8_t * data, uint16_t length); 198 199 /** 200 * @brief Send prepared response 201 * @param goep_cid 202 * @param response_code 203 * @return status 204 */ 205 uint8_t goep_server_execute(uint16_t goep_cid, uint8_t response_code); 206 207 /** 208 * De-Init 209 */ 210 void geop_server_deinit(void); 211 212 /* API_END */ 213 214 #if defined __cplusplus 215 } 216 #endif 217 #endif 218