1 /****************************************************************************** 2 * 3 * Copyright (C) 2003-2012 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 GATT client utility function. 22 * 23 ******************************************************************************/ 24 25 #include "bt_target.h" 26 27 #if defined(BTA_GATT_INCLUDED) && (BTA_GATT_INCLUDED == TRUE) 28 29 #include <string.h> 30 #include "utl.h" 31 #include "gki.h" 32 #include "bta_sys.h" 33 #include "bta_gatts_int.h" 34 #include "bd.h" 35 36 static const UINT8 base_uuid[LEN_UUID_128] = {0xFB, 0x34, 0x9B, 0x5F, 0x80, 0x00, 0x00, 0x80, 37 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; 38 39 /******************************************************************************* 40 ** 41 ** Function bta_gatt_convert_uuid16_to_uuid128 42 ** 43 ** Description Convert a 16 bits UUID to be an standard 128 bits one. 44 ** 45 ** Returns TRUE if two uuid match; FALSE otherwise. 46 ** 47 *******************************************************************************/ 48 static void bta_gatt_convert_uuid16_to_uuid128(UINT8 uuid_128[LEN_UUID_128], UINT16 uuid_16) 49 { 50 UINT8 *p = &uuid_128[LEN_UUID_128 - 4]; 51 52 memcpy (uuid_128, base_uuid, LEN_UUID_128); 53 54 UINT16_TO_STREAM(p, uuid_16); 55 } 56 /******************************************************************************* 57 ** 58 ** Function bta_gatts_alloc_srvc_cb 59 ** 60 ** Description allocate a service control block. 61 ** 62 ** Returns pointer to the control block, or otherwise NULL when failed. 63 ** 64 *******************************************************************************/ 65 UINT8 bta_gatts_alloc_srvc_cb(tBTA_GATTS_CB *p_cb, UINT8 rcb_idx) 66 { 67 UINT8 i; 68 69 for (i = 0; i < BTA_GATTS_MAX_SRVC_NUM; i ++) 70 { 71 if (!p_cb->srvc_cb[i].in_use) 72 { 73 p_cb->srvc_cb[i].in_use = TRUE; 74 p_cb->srvc_cb[i].rcb_idx = rcb_idx; 75 return i; 76 } 77 } 78 return BTA_GATTS_INVALID_APP; 79 } 80 81 /******************************************************************************* 82 ** 83 ** Function bta_gatts_find_app_rcb_by_app_if 84 ** 85 ** Description find the index of the application control block by app ID. 86 ** 87 ** Returns pointer to the control block if success, otherwise NULL 88 ** 89 *******************************************************************************/ 90 tBTA_GATTS_RCB *bta_gatts_find_app_rcb_by_app_if(tBTA_GATTS_IF server_if) 91 { 92 UINT8 i; 93 tBTA_GATTS_RCB *p_reg; 94 95 for (i = 0, p_reg = bta_gatts_cb.rcb; i < BTA_GATTS_MAX_APP_NUM; i ++, p_reg++) 96 { 97 if (p_reg->in_use && p_reg->gatt_if == server_if) 98 return p_reg; 99 } 100 return NULL; 101 } 102 103 /******************************************************************************* 104 ** 105 ** Function bta_gatts_find_app_rcb_idx_by_app_if 106 ** 107 ** Description find the index of the application control block by app ID. 108 ** 109 ** Returns index of the control block, or BTA_GATTS_INVALID_APP if failed. 110 ** 111 *******************************************************************************/ 112 113 UINT8 bta_gatts_find_app_rcb_idx_by_app_if(tBTA_GATTS_CB *p_cb, tBTA_GATTS_IF server_if) 114 { 115 UINT8 i; 116 117 for (i = 0; i < BTA_GATTS_MAX_APP_NUM; i ++) 118 { 119 if (p_cb->rcb[i].in_use && p_cb->rcb[i].gatt_if == server_if) 120 return i; 121 } 122 return BTA_GATTS_INVALID_APP; 123 } 124 /******************************************************************************* 125 ** 126 ** Function bta_gatts_find_srvc_cb_by_srvc_id 127 ** 128 ** Description find the service control block by service ID. 129 ** 130 ** Returns pointer to the rcb. 131 ** 132 *******************************************************************************/ 133 tBTA_GATTS_SRVC_CB * bta_gatts_find_srvc_cb_by_srvc_id(tBTA_GATTS_CB *p_cb, UINT16 service_id) 134 { 135 UINT8 i; 136 APPL_TRACE_DEBUG("bta_gatts_find_srvc_cb_by_srvc_id service_id=%d", service_id); 137 for (i = 0; i < BTA_GATTS_MAX_SRVC_NUM; i ++) 138 { 139 if (p_cb->srvc_cb[i].in_use && 140 p_cb->srvc_cb[i].service_id == service_id) 141 { 142 APPL_TRACE_DEBUG("bta_gatts_find_srvc_cb_by_srvc_id found service cb index =%d", i); 143 return &p_cb->srvc_cb[i]; 144 } 145 } 146 return NULL; 147 } 148 /******************************************************************************* 149 ** 150 ** Function bta_gatts_find_srvc_cb_by_attr_id 151 ** 152 ** Description find the service control block by attribute ID. 153 ** 154 ** Returns pointer to the rcb. 155 ** 156 *******************************************************************************/ 157 tBTA_GATTS_SRVC_CB * bta_gatts_find_srvc_cb_by_attr_id(tBTA_GATTS_CB *p_cb, UINT16 attr_id) 158 { 159 UINT8 i; 160 161 for (i = 0; i < (BTA_GATTS_MAX_SRVC_NUM); i ++) 162 { 163 if (/* middle service */ 164 (i < (BTA_GATTS_MAX_SRVC_NUM - 1) && 165 p_cb->srvc_cb[i].in_use && 166 p_cb->srvc_cb[i + 1].in_use && 167 attr_id >= p_cb->srvc_cb[i].service_id && 168 attr_id < p_cb->srvc_cb[i + 1].service_id) || 169 /* last active service */ 170 (i < (BTA_GATTS_MAX_SRVC_NUM - 1) && 171 p_cb->srvc_cb[i].in_use && 172 !p_cb->srvc_cb[i + 1].in_use && 173 attr_id >= p_cb->srvc_cb[i].service_id) || 174 /* last service incb */ 175 (i == (BTA_GATTS_MAX_SRVC_NUM - 1) && 176 attr_id >= p_cb->srvc_cb[i].service_id) 177 ) 178 { 179 return &p_cb->srvc_cb[i]; 180 } 181 } 182 return NULL; 183 } 184 /******************************************************************************* 185 ** 186 ** Function bta_gatts_uuid_compare 187 ** 188 ** Description Compare two UUID to see if they are the same. 189 ** 190 ** Returns TRUE if two uuid match; FALSE otherwise. 191 ** 192 *******************************************************************************/ 193 BOOLEAN bta_gatts_uuid_compare(tBT_UUID tar, tBT_UUID src) 194 { 195 UINT8 su[LEN_UUID_128], tu[LEN_UUID_128]; 196 UINT8 *ps, *pt; 197 198 /* any of the UUID is unspecified */ 199 if (src.len == 0 || tar.len == 0) 200 { 201 return TRUE; 202 } 203 204 /* If both are 16-bit, we can do a simple compare */ 205 if (src.len == 2 && tar.len == 2) 206 { 207 return src.uu.uuid16 == tar.uu.uuid16; 208 } 209 210 /* One or both of the UUIDs is 128-bit */ 211 if (src.len == LEN_UUID_16) 212 { 213 /* convert a 16 bits UUID to 128 bits value */ 214 bta_gatt_convert_uuid16_to_uuid128(su, src.uu.uuid16); 215 ps = su; 216 } 217 else 218 ps = src.uu.uuid128; 219 220 if (tar.len == LEN_UUID_16) 221 { 222 /* convert a 16 bits UUID to 128 bits value */ 223 bta_gatt_convert_uuid16_to_uuid128(tu, tar.uu.uuid16); 224 pt = tu; 225 } 226 else 227 pt = tar.uu.uuid128; 228 229 return(memcmp(ps, pt, LEN_UUID_128) == 0); 230 } 231 232 233 234 235 #endif 236
