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 *******************************************************************************/
gatt_profile_find_conn_id_by_bd_addr(BD_ADDR bda)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 *******************************************************************************/
gatt_profile_find_clcb_by_bd_addr(BD_ADDR bda,tBT_TRANSPORT transport)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 *******************************************************************************/
gatt_profile_clcb_alloc(UINT16 conn_id,BD_ADDR bda,tBT_TRANSPORT tranport)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 *******************************************************************************/
gatt_profile_clcb_dealloc(UINT16 conn_id)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 *******************************************************************************/
gatt_profile_request_cback(UINT16 conn_id,UINT32 trans_id,tGATTS_REQ_TYPE type,tGATTS_DATA * p_data)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 *******************************************************************************/
gatt_profile_connect_cback(tGATT_IF gatt_if,BD_ADDR bda,UINT16 conn_id,BOOLEAN connected,tGATT_DISCONN_REASON reason,tBT_TRANSPORT transport)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 *******************************************************************************/
gatt_profile_db_init(void)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