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
28 #include "gatt_api.h"
29 #include "gatt_int.h"
30
31 #if BLE_INCLUDED == TRUE
32
33 #define GATTP_MAX_NUM_INC_SVR 0
34 #define GATTP_MAX_CHAR_NUM 2
35 #define GATTP_MAX_ATTR_NUM (GATTP_MAX_CHAR_NUM * 2 + GATTP_MAX_NUM_INC_SVR + 1)
36 #define GATTP_MAX_CHAR_VALUE_SIZE 50
37
38 #ifndef GATTP_ATTR_DB_SIZE
39 #define GATTP_ATTR_DB_SIZE GATT_DB_MEM_SIZE(GATTP_MAX_NUM_INC_SVR, GATTP_MAX_CHAR_NUM, GATTP_MAX_CHAR_VALUE_SIZE)
40 #endif
41
42 static void gatt_profile_request_cback (UINT16 conn_id, UINT32 trans_id, UINT8 op_code, tGATTS_DATA *p_data);
43 static void gatt_profile_connect_cback (tGATT_IF gatt_if, BD_ADDR bda, UINT16 conn_id, BOOLEAN connected, tGATT_DISCONN_REASON reason);
44
45 static tGATT_CBACK gatt_profile_cback =
46 {
47 gatt_profile_connect_cback,
48 NULL,
49 NULL,
50 NULL,
51 gatt_profile_request_cback
52 } ;
53
54 /*******************************************************************************
55 **
56 ** Function gatt_profile_find_conn_id_by_bd_addr
57 **
58 ** Description The function searches all LCB with macthing bd address
59 **
60 ** Returns total number of clcb found.
61 **
62 *******************************************************************************/
gatt_profile_find_conn_id_by_bd_addr(BD_ADDR bda)63 UINT16 gatt_profile_find_conn_id_by_bd_addr(BD_ADDR bda)
64 {
65 UINT8 i_clcb;
66 tGATT_PROFILE_CLCB *p_clcb = NULL;
67
68 for (i_clcb = 0, p_clcb= gatt_cb.profile_clcb; i_clcb < GATT_MAX_APPS; i_clcb++, p_clcb++)
69 {
70 if (p_clcb->in_use && p_clcb->connected && !memcmp(p_clcb->bda, bda, BD_ADDR_LEN))
71 {
72 return p_clcb->conn_id;
73 }
74 }
75
76 return GATT_INVALID_CONN_ID;
77 }
78
79 /*******************************************************************************
80 **
81 ** Function gatt_profile_find_clcb_by_bd_addr
82 **
83 ** Description The function searches all LCBs with macthing bd address.
84 **
85 ** Returns Pointer to the found link conenction control block.
86 **
87 *******************************************************************************/
gatt_profile_find_clcb_by_bd_addr(BD_ADDR bda)88 tGATT_PROFILE_CLCB *gatt_profile_find_clcb_by_bd_addr(BD_ADDR bda)
89 {
90 UINT8 i_clcb;
91 tGATT_PROFILE_CLCB *p_clcb = NULL;
92
93 for (i_clcb = 0, p_clcb= gatt_cb.profile_clcb; i_clcb < GATT_MAX_APPS; i_clcb++, p_clcb++)
94 {
95 if (p_clcb->in_use && p_clcb->connected && !memcmp(p_clcb->bda, bda, BD_ADDR_LEN))
96 {
97 return p_clcb;
98 }
99 }
100
101 return p_clcb;
102 }
103
104 /*******************************************************************************
105 **
106 ** Function gatt_profile_clcb_alloc
107 **
108 ** Description The function allocates a GATT profile connection link control block
109 **
110 ** Returns NULL if not found. Otherwise pointer to the connection link block.
111 **
112 *******************************************************************************/
gatt_profile_clcb_alloc(UINT16 conn_id,BD_ADDR bda)113 tGATT_PROFILE_CLCB *gatt_profile_clcb_alloc (UINT16 conn_id, BD_ADDR bda)
114 {
115 UINT8 i_clcb = 0;
116 tGATT_PROFILE_CLCB *p_clcb = NULL;
117
118 for (i_clcb = 0, p_clcb= gatt_cb.profile_clcb; i_clcb < GATT_MAX_APPS; i_clcb++, p_clcb++)
119 {
120 if (!p_clcb->in_use)
121 {
122 p_clcb->in_use = TRUE;
123 p_clcb->conn_id = conn_id;
124 p_clcb->connected = TRUE;
125 memcpy (p_clcb->bda, bda, BD_ADDR_LEN);
126 break;
127 }
128 }
129 return p_clcb;
130 }
131 /*******************************************************************************
132 **
133 ** Function gatt_profile_clcb_dealloc
134 **
135 ** Description The function deallocates a GATT profile connection link control block
136 **
137 ** Returns NTrue the deallocation is successful
138 **
139 *******************************************************************************/
gatt_profile_clcb_dealloc(UINT16 conn_id)140 BOOLEAN gatt_profile_clcb_dealloc (UINT16 conn_id)
141 {
142 UINT8 i_clcb = 0;
143 tGATT_PROFILE_CLCB *p_clcb = NULL;
144
145 for (i_clcb = 0, p_clcb= gatt_cb.profile_clcb; i_clcb < GATT_MAX_APPS; i_clcb++, p_clcb++)
146 {
147 if (p_clcb->in_use && p_clcb->connected && (p_clcb->conn_id == conn_id))
148 {
149 memset(p_clcb, 0, sizeof(tGATT_PROFILE_CLCB));
150 return TRUE;
151 }
152 }
153 return FALSE;
154 }
155
156
157 /*******************************************************************************
158 **
159 ** Function gatt_profile_request_cback
160 **
161 ** Description GATT profile attribute access request callback.
162 **
163 ** Returns void.
164 **
165 *******************************************************************************/
gatt_profile_request_cback(UINT16 conn_id,UINT32 trans_id,tGATTS_REQ_TYPE type,tGATTS_DATA * p_data)166 static void gatt_profile_request_cback (UINT16 conn_id, UINT32 trans_id, tGATTS_REQ_TYPE type,
167 tGATTS_DATA *p_data)
168 {
169 UINT8 status = GATT_INVALID_PDU;
170 tGATTS_RSP rsp_msg ;
171 BOOLEAN ignore = FALSE;
172
173 memset(&rsp_msg, 0, sizeof(tGATTS_RSP));
174
175 switch (type)
176 {
177 case GATTS_REQ_TYPE_READ:
178 status = GATT_READ_NOT_PERMIT;
179 break;
180
181 case GATTS_REQ_TYPE_WRITE:
182 status = GATT_WRITE_NOT_PERMIT;
183 break;
184
185 case GATTS_REQ_TYPE_WRITE_EXEC:
186 case GATT_CMD_WRITE:
187 ignore = TRUE;
188 GATT_TRACE_EVENT0("Ignore GATT_REQ_EXEC_WRITE/WRITE_CMD" );
189 break;
190
191 case GATTS_REQ_TYPE_MTU:
192 GATT_TRACE_EVENT1("Get MTU exchange new mtu size: %d", p_data->mtu);
193 ignore = TRUE;
194 break;
195
196 default:
197 GATT_TRACE_EVENT1("Unknown/unexpected LE GAP ATT request: 0x%02x", type);
198 break;
199 }
200
201 if (!ignore)
202 GATTS_SendRsp (conn_id, trans_id, status, &rsp_msg);
203
204 }
205
206 /*******************************************************************************
207 **
208 ** Function gatt_profile_connect_cback
209 **
210 ** Description Gatt profile connection callback.
211 **
212 ** Returns void
213 **
214 *******************************************************************************/
gatt_profile_connect_cback(tGATT_IF gatt_if,BD_ADDR bda,UINT16 conn_id,BOOLEAN connected,tGATT_DISCONN_REASON reason)215 static void gatt_profile_connect_cback (tGATT_IF gatt_if, BD_ADDR bda, UINT16 conn_id,
216 BOOLEAN connected, tGATT_DISCONN_REASON reason)
217 {
218 GATT_TRACE_EVENT5 ("gatt_profile_connect_cback: from %08x%04x connected:%d conn_id=%d reason = 0x%04x",
219 (bda[0]<<24)+(bda[1]<<16)+(bda[2]<<8)+bda[3],
220 (bda[4]<<8)+bda[5], connected, conn_id, reason);
221
222 if (connected)
223 {
224 if (gatt_profile_clcb_alloc(conn_id, bda) == NULL)
225 {
226 GATT_TRACE_ERROR0 ("gatt_profile_connect_cback: no_resource");
227 return;
228 }
229 }
230 else
231 {
232 gatt_profile_clcb_dealloc(conn_id);
233 }
234
235 }
236
237 /*******************************************************************************
238 **
239 ** Function gatt_profile_db_init
240 **
241 ** Description Initializa the GATT profile attribute database.
242 **
243 *******************************************************************************/
gatt_profile_db_init(void)244 void gatt_profile_db_init (void)
245 {
246 tBT_UUID app_uuid = {LEN_UUID_128, {0}};
247 tBT_UUID uuid = {LEN_UUID_16, {UUID_SERVCLASS_GATT_SERVER}};
248 UINT16 service_handle = 0;
249 tGATT_STATUS status;
250
251 /* Fill our internal UUID with a fixed pattern 0x81 */
252 memset (&app_uuid.uu.uuid128, 0x81, LEN_UUID_128);
253
254
255 /* Create a GATT profile service */
256 gatt_cb.gatt_if = GATT_Register(&app_uuid, &gatt_profile_cback);
257 GATT_StartIf(gatt_cb.gatt_if);
258
259 service_handle = GATTS_CreateService (gatt_cb.gatt_if , &uuid, 0, GATTP_MAX_ATTR_NUM, TRUE);
260 /* add Service Changed characteristic
261 */
262 uuid.uu.uuid16 = gatt_cb.gattp_attr.uuid = GATT_UUID_GATT_SRV_CHGD;
263 gatt_cb.gattp_attr.service_change = 0;
264 gatt_cb.gattp_attr.handle =
265 gatt_cb.handle_of_h_r = GATTS_AddCharacteristic(service_handle, &uuid, 0, GATT_CHAR_PROP_BIT_INDICATE);
266
267 GATT_TRACE_DEBUG1 ("gatt_profile_db_init: handle of service changed%d",
268 gatt_cb.handle_of_h_r );
269
270 /* start service
271 */
272 status = GATTS_StartService (gatt_cb.gatt_if, service_handle, GATTP_TRANSPORT_SUPPORTED );
273
274 GATT_TRACE_DEBUG2 ("gatt_profile_db_init: gatt_if=%d start status%d",
275 gatt_cb.gatt_if, status);
276 }
277
278 #endif /* BLE_INCLUDED */
279