1/****************************************************************************** 2 * 3 * Copyright (C) 2009-2013 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#include <hardware/bluetooth.h> 20#include <hardware/bt_gatt.h> 21#include <stdio.h> 22#include <stdlib.h> 23#include <errno.h> 24#include <string.h> 25 26#define LOG_TAG "BtGatt.btif" 27 28#include "bta_api.h" 29#include "bta_gatt_api.h" 30#include "bta_jv_api.h" 31#include "bd.h" 32#include "btif_storage.h" 33 34#include "btif_common.h" 35#include "btif_dm.h" 36#include "btif_util.h" 37#include "btif_gatt.h" 38#include "btif_gatt_util.h" 39#include "btif_config.h" 40 41#if BTA_GATT_INCLUDED == TRUE 42 43#define GATTC_READ_VALUE_TYPE_VALUE 0x0000 /* Attribute value itself */ 44#define GATTC_READ_VALUE_TYPE_AGG_FORMAT 0x2905 /* Characteristic Aggregate Format*/ 45 46static char BASE_UUID[16] = { 47 0xfb, 0x34, 0x9b, 0x5f, 0x80, 0x00, 0x00, 0x80, 48 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 49}; 50 51extern bt_status_t btif_dm_remove_bond(const bt_bdaddr_t *bd_addr); 52 53int uuidType(unsigned char* p_uuid) 54{ 55 int i = 0; 56 int match = 0; 57 int all_zero = 1; 58 59 for(i = 0; i != 16; ++i) 60 { 61 if (i == 12 || i == 13) 62 continue; 63 64 if (p_uuid[i] == BASE_UUID[i]) 65 ++match; 66 67 if (p_uuid[i] != 0) 68 all_zero = 0; 69 } 70 if (all_zero) 71 return 0; 72 if (match == 12) 73 return LEN_UUID_32; 74 if (match == 14) 75 return LEN_UUID_16; 76 return LEN_UUID_128; 77} 78 79/******************************************************************************* 80 * BTIF -> BTA conversion functions 81 *******************************************************************************/ 82 83void btif_to_bta_uuid(tBT_UUID *p_dest, bt_uuid_t *p_src) 84{ 85 char *p_byte = (char*)p_src; 86 int i = 0; 87 88 p_dest->len = uuidType(p_src->uu); 89 90 switch (p_dest->len) 91 { 92 case LEN_UUID_16: 93 p_dest->uu.uuid16 = (p_src->uu[13] << 8) + p_src->uu[12]; 94 break; 95 96 case LEN_UUID_32: 97 p_dest->uu.uuid32 = (p_src->uu[13] << 8) + p_src->uu[12]; 98 p_dest->uu.uuid32 += (p_src->uu[15] << 24) + (p_src->uu[14] << 16); 99 break; 100 101 case LEN_UUID_128: 102 for(i = 0; i != 16; ++i) 103 p_dest->uu.uuid128[i] = p_byte[i]; 104 break; 105 106 default: 107 ALOGE("%s: Unknown UUID length %d!", __FUNCTION__, p_dest->len); 108 break; 109 } 110} 111 112void btif_to_bta_gatt_id(tBTA_GATT_ID *p_dest, btgatt_gatt_id_t *p_src) 113{ 114 p_dest->inst_id = p_src->inst_id; 115 btif_to_bta_uuid(&p_dest->uuid, &p_src->uuid); 116} 117 118void btif_to_bta_srvc_id(tBTA_GATT_SRVC_ID *p_dest, btgatt_srvc_id_t *p_src) 119{ 120 p_dest->id.inst_id = p_src->id.inst_id; 121 btif_to_bta_uuid(&p_dest->id.uuid, &p_src->id.uuid); 122 p_dest->is_primary = p_src->is_primary; 123} 124 125void btif_to_bta_response(tBTA_GATTS_RSP *p_dest, btgatt_response_t* p_src) 126{ 127 p_dest->attr_value.auth_req = p_src->attr_value.auth_req; 128 p_dest->attr_value.handle = p_src->attr_value.handle; 129 p_dest->attr_value.len = p_src->attr_value.len; 130 p_dest->attr_value.offset = p_src->attr_value.offset; 131 memcpy(p_dest->attr_value.value, p_src->attr_value.value, GATT_MAX_ATTR_LEN); 132} 133 134/******************************************************************************* 135 * BTA -> BTIF conversion functions 136 *******************************************************************************/ 137 138void bta_to_btif_uuid(bt_uuid_t *p_dest, tBT_UUID *p_src) 139{ 140 int i = 0; 141 142 if (p_src->len == LEN_UUID_16 || p_src->len == LEN_UUID_32) 143 { 144 for(i=0; i != 16; ++i) 145 p_dest->uu[i] = BASE_UUID[i]; 146 } 147 148 switch (p_src->len) 149 { 150 case 0: 151 break; 152 153 case LEN_UUID_16: 154 p_dest->uu[12] = p_src->uu.uuid16 & 0xff; 155 p_dest->uu[13] = (p_src->uu.uuid16 >> 8) & 0xff; 156 break; 157 158 case LEN_UUID_32: 159 p_dest->uu[12] = p_src->uu.uuid16 & 0xff; 160 p_dest->uu[13] = (p_src->uu.uuid16 >> 8) & 0xff; 161 p_dest->uu[14] = (p_src->uu.uuid32 >> 16) & 0xff; 162 p_dest->uu[15] = (p_src->uu.uuid32 >> 24) & 0xff; 163 break; 164 165 case LEN_UUID_128: 166 for(i=0; i != 16; ++i) 167 p_dest->uu[i] = p_src->uu.uuid128[i]; 168 break; 169 170 default: 171 ALOGE("%s: Unknown UUID length %d!", __FUNCTION__, p_src->len); 172 break; 173 } 174} 175 176 177void bta_to_btif_gatt_id(btgatt_gatt_id_t *p_dest, tBTA_GATT_ID *p_src) 178{ 179 p_dest->inst_id = p_src->inst_id; 180 bta_to_btif_uuid(&p_dest->uuid, &p_src->uuid); 181} 182 183void bta_to_btif_srvc_id(btgatt_srvc_id_t *p_dest, tBTA_GATT_SRVC_ID *p_src) 184{ 185 p_dest->id.inst_id = p_src->id.inst_id; 186 bta_to_btif_uuid(&p_dest->id.uuid, &p_src->id.uuid); 187 p_dest->is_primary = p_src->is_primary; 188} 189 190 191/******************************************************************************* 192 * Utility functions 193 *******************************************************************************/ 194 195uint16_t get_uuid16(tBT_UUID *p_uuid) 196{ 197 if (p_uuid->len == LEN_UUID_16) 198 { 199 return p_uuid->uu.uuid16; 200 } 201 else if (p_uuid->len == LEN_UUID_128) 202 { 203 UINT16 u16; 204 UINT8 *p = &p_uuid->uu.uuid128[LEN_UUID_128 - 4]; 205 STREAM_TO_UINT16(u16, p); 206 return u16; 207 } 208 else /* p_uuid->len == LEN_UUID_32 */ 209 { 210 return(UINT16) p_uuid->uu.uuid32; 211 } 212} 213 214uint16_t set_read_value(btgatt_read_params_t *p_dest, tBTA_GATTC_READ *p_src) 215{ 216 int i = 0; 217 uint16_t descr_type = 0; 218 uint16_t len = 0; 219 220 p_dest->status = p_src->status; 221 bta_to_btif_srvc_id(&p_dest->srvc_id, &p_src->srvc_id); 222 bta_to_btif_gatt_id(&p_dest->char_id, &p_src->char_id); 223 bta_to_btif_gatt_id(&p_dest->descr_id, &p_src->descr_type); 224 225 descr_type = get_uuid16(&p_src->descr_type.uuid); 226 227 switch (descr_type) 228 { 229 case GATT_UUID_CHAR_AGG_FORMAT: 230 /* not supported */ 231 p_dest->value_type = GATTC_READ_VALUE_TYPE_AGG_FORMAT; 232 break; 233 234 default: 235 if (( p_src->status == BTA_GATT_OK ) &&(p_src->p_value != NULL)) 236 { 237 ALOGI("%s unformat.len = %d ", __FUNCTION__, p_src->p_value->unformat.len); 238 p_dest->value.len = p_src->p_value->unformat.len; 239 if ( p_src->p_value->unformat.len > 0 && p_src->p_value->unformat.p_value != NULL ) 240 { 241 memcpy(p_dest->value.value, p_src->p_value->unformat.p_value, 242 p_src->p_value->unformat.len); 243 } 244 len += p_src->p_value->unformat.len; 245 } 246 else 247 { 248 p_dest->value.len = 0; 249 } 250 251 p_dest->value_type = GATTC_READ_VALUE_TYPE_VALUE; 252 break; 253 } 254 255 return len; 256} 257 258/******************************************************************************* 259 * Encrypted link map handling 260 *******************************************************************************/ 261 262static void btif_gatt_set_encryption_cb (BD_ADDR bd_addr, tBTA_STATUS result); 263 264static BOOLEAN btif_gatt_is_link_encrypted (BD_ADDR bd_addr) 265{ 266 if (bd_addr == NULL) 267 return FALSE; 268 269 return BTA_JvIsEncrypted(bd_addr); 270} 271 272static void btif_gatt_set_encryption_cb (BD_ADDR bd_addr, tBTA_STATUS result) 273{ 274 if (result != BTA_SUCCESS) 275 { 276 bt_bdaddr_t bda; 277 bdcpy(bda.address, bd_addr); 278 279 btif_dm_remove_bond(&bda); 280 } 281} 282 283void btif_gatt_check_encrypted_link (BD_ADDR bd_addr) 284{ 285 char buf[100]; 286 287 bt_bdaddr_t bda; 288 bdcpy(bda.address, bd_addr); 289 290 if ((btif_storage_get_ble_bonding_key(&bda, BTIF_DM_LE_KEY_PENC, 291 buf, sizeof(btif_dm_ble_penc_keys_t)) == BT_STATUS_SUCCESS) 292 && !btif_gatt_is_link_encrypted(bd_addr)) 293 { 294 BTA_DmSetEncryption(bd_addr, 295 &btif_gatt_set_encryption_cb, BTM_BLE_SEC_ENCRYPT); 296 } 297} 298 299/******************************************************************************* 300 * Device information 301 *******************************************************************************/ 302 303BOOLEAN btif_get_device_type(BD_ADDR bd_addr, int *addr_type, int *device_type) 304{ 305 if (device_type == NULL || addr_type == NULL) 306 return FALSE; 307 308 bt_bdaddr_t bda; 309 bdcpy(bda.address, bd_addr); 310 311 char bd_addr_str[18] = {0}; 312 bd2str(&bda, &bd_addr_str); 313 314 if (!btif_config_get_int("Remote", bd_addr_str, "DevType", device_type)) 315 return FALSE; 316 317 if (!btif_config_get_int("Remote", bd_addr_str, "AddrType", addr_type)) 318 return FALSE; 319 320 ALOGD("%s: Device [%s] type %d, addr. type %d", __FUNCTION__, bd_addr_str, *device_type, *addr_type); 321 return TRUE; 322} 323 324#endif 325