1 /****************************************************************************** 2 * 3 * Copyright (C) 2008-2012 Broadcom Corporation 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at: 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 ******************************************************************************/ 18 19 /****************************************************************************** 20 * 21 * this file contains the main GATT server attributes access request 22 * handling functions. 23 * 24 ******************************************************************************/ 25 26 #include "bt_target.h" 27 #include "bt_utils.h" 28 29 #include "gatt_api.h" 30 #include "gatt_int.h" 31 32 #if BLE_INCLUDED == TRUE 33 34 #define GATTP_MAX_NUM_INC_SVR 0 35 #define GATTP_MAX_CHAR_NUM 2 36 #define GATTP_MAX_ATTR_NUM (GATTP_MAX_CHAR_NUM * 2 + GATTP_MAX_NUM_INC_SVR + 1) 37 #define GATTP_MAX_CHAR_VALUE_SIZE 50 38 39 #ifndef GATTP_ATTR_DB_SIZE 40 #define GATTP_ATTR_DB_SIZE GATT_DB_MEM_SIZE(GATTP_MAX_NUM_INC_SVR, GATTP_MAX_CHAR_NUM, GATTP_MAX_CHAR_VALUE_SIZE) 41 #endif 42 43 static void gatt_profile_request_cback (UINT16 conn_id, UINT32 trans_id, UINT8 op_code, tGATTS_DATA *p_data); 44 static void gatt_profile_connect_cback (tGATT_IF gatt_if, BD_ADDR bda, UINT16 conn_id, 45 BOOLEAN connected, tGATT_DISCONN_REASON reason, tBT_TRANSPORT transport); 46 47 static tGATT_CBACK gatt_profile_cback = 48 { 49 gatt_profile_connect_cback, 50 NULL, 51 NULL, 52 NULL, 53 gatt_profile_request_cback, 54 NULL, 55 NULL 56 } ; 57 58 /******************************************************************************* 59 ** 60 ** Function gatt_profile_find_conn_id_by_bd_addr 61 ** 62 ** Description The function searches all LCB with macthing bd address 63 ** 64 ** Returns total number of clcb found. 65 ** 66 *******************************************************************************/ 67 UINT16 gatt_profile_find_conn_id_by_bd_addr(BD_ADDR bda) 68 { 69 UINT8 i_clcb; 70 tGATT_PROFILE_CLCB *p_clcb = NULL; 71 72 for (i_clcb = 0, p_clcb= gatt_cb.profile_clcb; i_clcb < GATT_MAX_APPS; i_clcb++, p_clcb++) 73 { 74 if (p_clcb->in_use && p_clcb->connected && !memcmp(p_clcb->bda, bda, BD_ADDR_LEN)) 75 { 76 return p_clcb->conn_id; 77 } 78 } 79 80 return GATT_INVALID_CONN_ID; 81 } 82 83 /******************************************************************************* 84 ** 85 ** Function gatt_profile_find_clcb_by_bd_addr 86 ** 87 ** Description The function searches all LCBs with macthing bd address. 88 ** 89 ** Returns Pointer to the found link conenction control block. 90 ** 91 *******************************************************************************/ 92 static tGATT_PROFILE_CLCB *gatt_profile_find_clcb_by_bd_addr(BD_ADDR bda, tBT_TRANSPORT transport) 93 { 94 UINT8 i_clcb; 95 tGATT_PROFILE_CLCB *p_clcb = NULL; 96 97 for (i_clcb = 0, p_clcb= gatt_cb.profile_clcb; i_clcb < GATT_MAX_APPS; i_clcb++, p_clcb++) 98 { 99 if (p_clcb->in_use && p_clcb->transport == transport && 100 p_clcb->connected && !memcmp(p_clcb->bda, bda, BD_ADDR_LEN)) 101 { 102 return p_clcb; 103 } 104 } 105 106 return p_clcb; 107 } 108 109 /******************************************************************************* 110 ** 111 ** Function gatt_profile_clcb_alloc 112 ** 113 ** Description The function allocates a GATT profile connection link control block 114 ** 115 ** Returns NULL if not found. Otherwise pointer to the connection link block. 116 ** 117 *******************************************************************************/ 118 tGATT_PROFILE_CLCB *gatt_profile_clcb_alloc (UINT16 conn_id, BD_ADDR bda, tBT_TRANSPORT tranport) 119 { 120 UINT8 i_clcb = 0; 121 tGATT_PROFILE_CLCB *p_clcb = NULL; 122 123 for (i_clcb = 0, p_clcb= gatt_cb.profile_clcb; i_clcb < GATT_MAX_APPS; i_clcb++, p_clcb++) 124 { 125 if (!p_clcb->in_use) 126 { 127 p_clcb->in_use = TRUE; 128 p_clcb->conn_id = conn_id; 129 p_clcb->connected = TRUE; 130 p_clcb->transport = tranport; 131 memcpy (p_clcb->bda, bda, BD_ADDR_LEN); 132 break; 133 } 134 } 135 return p_clcb; 136 } 137 /******************************************************************************* 138 ** 139 ** Function gatt_profile_clcb_dealloc 140 ** 141 ** Description The function deallocates a GATT profile connection link control block 142 ** 143 ** Returns NTrue the deallocation is successful 144 ** 145 *******************************************************************************/ 146 BOOLEAN gatt_profile_clcb_dealloc (UINT16 conn_id) 147 { 148 UINT8 i_clcb = 0; 149 tGATT_PROFILE_CLCB *p_clcb = NULL; 150 151 for (i_clcb = 0, p_clcb= gatt_cb.profile_clcb; i_clcb < GATT_MAX_APPS; i_clcb++, p_clcb++) 152 { 153 if (p_clcb->in_use && p_clcb->connected && (p_clcb->conn_id == conn_id)) 154 { 155 memset(p_clcb, 0, sizeof(tGATT_PROFILE_CLCB)); 156 return TRUE; 157 } 158 } 159 return FALSE; 160 } 161 162 163 /******************************************************************************* 164 ** 165 ** Function gatt_profile_request_cback 166 ** 167 ** Description GATT profile attribute access request callback. 168 ** 169 ** Returns void. 170 ** 171 *******************************************************************************/ 172 static void gatt_profile_request_cback (UINT16 conn_id, UINT32 trans_id, tGATTS_REQ_TYPE type, 173 tGATTS_DATA *p_data) 174 { 175 UINT8 status = GATT_INVALID_PDU; 176 tGATTS_RSP rsp_msg ; 177 BOOLEAN ignore = FALSE; 178 179 memset(&rsp_msg, 0, sizeof(tGATTS_RSP)); 180 181 switch (type) 182 { 183 case GATTS_REQ_TYPE_READ: 184 status = GATT_READ_NOT_PERMIT; 185 break; 186 187 case GATTS_REQ_TYPE_WRITE: 188 status = GATT_WRITE_NOT_PERMIT; 189 break; 190 191 case GATTS_REQ_TYPE_WRITE_EXEC: 192 case GATT_CMD_WRITE: 193 ignore = TRUE; 194 GATT_TRACE_EVENT("Ignore GATT_REQ_EXEC_WRITE/WRITE_CMD" ); 195 break; 196 197 case GATTS_REQ_TYPE_MTU: 198 GATT_TRACE_EVENT("Get MTU exchange new mtu size: %d", p_data->mtu); 199 ignore = TRUE; 200 break; 201 202 default: 203 GATT_TRACE_EVENT("Unknown/unexpected LE GAP ATT request: 0x%02x", type); 204 break; 205 } 206 207 if (!ignore) 208 GATTS_SendRsp (conn_id, trans_id, status, &rsp_msg); 209 210 } 211 212 /******************************************************************************* 213 ** 214 ** Function gatt_profile_connect_cback 215 ** 216 ** Description Gatt profile connection callback. 217 ** 218 ** Returns void 219 ** 220 *******************************************************************************/ 221 static void gatt_profile_connect_cback (tGATT_IF gatt_if, BD_ADDR bda, UINT16 conn_id, 222 BOOLEAN connected, tGATT_DISCONN_REASON reason, 223 tBT_TRANSPORT transport) 224 { 225 UNUSED(gatt_if); 226 227 GATT_TRACE_EVENT ("gatt_profile_connect_cback: from %08x%04x connected:%d conn_id=%d reason = 0x%04x", 228 (bda[0]<<24)+(bda[1]<<16)+(bda[2]<<8)+bda[3], 229 (bda[4]<<8)+bda[5], connected, conn_id, reason); 230 231 if (connected) 232 { 233 if (gatt_profile_clcb_alloc(conn_id, bda, transport) == NULL) 234 { 235 GATT_TRACE_ERROR ("gatt_profile_connect_cback: no_resource"); 236 return; 237 } 238 } 239 else 240 { 241 gatt_profile_clcb_dealloc(conn_id); 242 } 243 244 } 245 246 /******************************************************************************* 247 ** 248 ** Function gatt_profile_db_init 249 ** 250 ** Description Initializa the GATT profile attribute database. 251 ** 252 *******************************************************************************/ 253 void gatt_profile_db_init (void) 254 { 255 tBT_UUID app_uuid = {LEN_UUID_128, {0}}; 256 tBT_UUID uuid = {LEN_UUID_16, {UUID_SERVCLASS_GATT_SERVER}}; 257 UINT16 service_handle = 0; 258 tGATT_STATUS status; 259 260 /* Fill our internal UUID with a fixed pattern 0x81 */ 261 memset (&app_uuid.uu.uuid128, 0x81, LEN_UUID_128); 262 263 264 /* Create a GATT profile service */ 265 gatt_cb.gatt_if = GATT_Register(&app_uuid, &gatt_profile_cback); 266 GATT_StartIf(gatt_cb.gatt_if); 267 268 service_handle = GATTS_CreateService (gatt_cb.gatt_if , &uuid, 0, GATTP_MAX_ATTR_NUM, TRUE); 269 /* add Service Changed characteristic 270 */ 271 uuid.uu.uuid16 = gatt_cb.gattp_attr.uuid = GATT_UUID_GATT_SRV_CHGD; 272 gatt_cb.gattp_attr.service_change = 0; 273 gatt_cb.gattp_attr.handle = 274 gatt_cb.handle_of_h_r = GATTS_AddCharacteristic(service_handle, &uuid, 0, GATT_CHAR_PROP_BIT_INDICATE); 275 276 GATT_TRACE_DEBUG ("gatt_profile_db_init: handle of service changed%d", 277 gatt_cb.handle_of_h_r ); 278 279 /* start service 280 */ 281 status = GATTS_StartService (gatt_cb.gatt_if, service_handle, GATTP_TRANSPORT_SUPPORTED ); 282 283 GATT_TRACE_DEBUG ("gatt_profile_db_init: gatt_if=%d start status%d", 284 gatt_cb.gatt_if, status); 285 } 286 287 #endif /* BLE_INCLUDED */ 288
