1/******************************************************************************
2 *
3 *  Copyright (c) 2014 The Android Open Source Project
4 *  Copyright (C) 2004-2012 Broadcom Corporation
5 *
6 *  Licensed under the Apache License, Version 2.0 (the "License");
7 *  you may not use this file except in compliance with the License.
8 *  You may obtain a copy of the License at:
9 *
10 *  http://www.apache.org/licenses/LICENSE-2.0
11 *
12 *  Unless required by applicable law or agreed to in writing, software
13 *  distributed under the License is distributed on an "AS IS" BASIS,
14 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 *  See the License for the specific language governing permissions and
16 *  limitations under the License.
17 *
18 ******************************************************************************/
19
20/******************************************************************************
21 *
22 *  This file contains the audio gateway functions controlling the RFCOMM
23 *  connections.
24 *
25 ******************************************************************************/
26
27#include <string.h>
28#include "bta_api.h"
29#include "bta_hf_client_int.h"
30#include "port_api.h"
31#include "bd.h"
32#include "bt_utils.h"
33
34/*******************************************************************************
35**
36** Function         bta_hf_client_port_cback
37**
38** Description      RFCOMM Port callback
39**
40**
41** Returns          void
42**
43*******************************************************************************/
44static void bta_hf_client_port_cback(UINT32 code, UINT16 port_handle)
45{
46    BT_HDR      *p_buf;
47    UNUSED(code);
48
49    /* ignore port events for port handles other than connected handle */
50    if (port_handle != bta_hf_client_cb.scb.conn_handle)
51    {
52        APPL_TRACE_DEBUG("bta_hf_client_port_cback ignoring handle:%d conn_handle = %d",
53                          port_handle, bta_hf_client_cb.scb.conn_handle);
54        return;
55    }
56
57    if ((p_buf = (BT_HDR *) GKI_getbuf(sizeof(BT_HDR))) != NULL)
58    {
59        p_buf->event = BTA_HF_CLIENT_RFC_DATA_EVT;
60        bta_sys_sendmsg(p_buf);
61    }
62}
63
64/*******************************************************************************
65**
66** Function         bta_hf_client_mgmt_cback
67**
68** Description      RFCOMM management callback
69**
70**
71** Returns          void
72**
73*******************************************************************************/
74static void bta_hf_client_mgmt_cback(UINT32 code, UINT16 port_handle)
75{
76    tBTA_HF_CLIENT_RFC     *p_buf;
77    UINT16                  event;
78
79    APPL_TRACE_DEBUG("bta_hf_client_mgmt_cback : code = %d, port_handle = %d, conn_handle = %d, serv_handle = %d",
80                        code, port_handle, bta_hf_client_cb.scb.conn_handle, bta_hf_client_cb.scb.serv_handle);
81
82    /* ignore close event for port handles other than connected handle */
83    if ((code != PORT_SUCCESS) && (port_handle != bta_hf_client_cb.scb.conn_handle))
84    {
85        APPL_TRACE_DEBUG("bta_hf_client_mgmt_cback ignoring handle:%d", port_handle);
86        return;
87    }
88
89    if (code == PORT_SUCCESS)
90    {
91        if ((bta_hf_client_cb.scb.conn_handle && (port_handle == bta_hf_client_cb.scb.conn_handle)) || /* outgoing connection */
92                (port_handle == bta_hf_client_cb.scb.serv_handle))                       /* incoming connection */
93        {
94            event = BTA_HF_CLIENT_RFC_OPEN_EVT;
95        }
96        else
97        {
98            APPL_TRACE_ERROR ("bta_hf_client_mgmt_cback: PORT_SUCCESS, ignoring handle = %d", port_handle);
99            return;
100        }
101    }
102    /* distinguish server close events */
103    else if (port_handle == bta_hf_client_cb.scb.conn_handle)
104    {
105        event = BTA_HF_CLIENT_RFC_CLOSE_EVT;
106    }
107    else
108    {
109        event = BTA_HF_CLIENT_RFC_SRV_CLOSE_EVT;
110    }
111
112    if ((p_buf = (tBTA_HF_CLIENT_RFC *) GKI_getbuf(sizeof(tBTA_HF_CLIENT_RFC))) != NULL)
113    {
114        p_buf->hdr.event = event;
115        p_buf->port_handle = port_handle;
116        bta_sys_sendmsg(p_buf);
117    }
118}
119
120/*******************************************************************************
121**
122** Function         bta_hf_client_setup_port
123**
124** Description      Setup RFCOMM port for use by HF Client.
125**
126**
127** Returns          void
128**
129*******************************************************************************/
130void bta_hf_client_setup_port(UINT16 handle)
131{
132    PORT_SetEventMask(handle, PORT_EV_RXCHAR);
133    PORT_SetEventCallback(handle, bta_hf_client_port_cback);
134}
135
136/*******************************************************************************
137**
138** Function         bta_hf_client_start_server
139**
140** Description      Setup RFCOMM server for use by HF Client.
141**
142**
143** Returns          void
144**
145*******************************************************************************/
146void bta_hf_client_start_server(void)
147{
148    int i;
149    int port_status;
150
151    if (bta_hf_client_cb.scb.serv_handle > 0)
152    {
153        APPL_TRACE_DEBUG("%s already started, handle: %d", __FUNCTION__, bta_hf_client_cb.scb.serv_handle);
154        return;
155    }
156
157    BTM_SetSecurityLevel(FALSE, "", BTM_SEC_SERVICE_HF_HANDSFREE, bta_hf_client_cb.scb.serv_sec_mask,
158        BT_PSM_RFCOMM, BTM_SEC_PROTO_RFCOMM, bta_hf_client_cb.scn);
159
160    port_status =  RFCOMM_CreateConnection(UUID_SERVCLASS_HF_HANDSFREE, bta_hf_client_cb.scn,
161        TRUE, BTA_HF_CLIENT_MTU, (UINT8 *) bd_addr_any, &(bta_hf_client_cb.scb.serv_handle),
162        bta_hf_client_mgmt_cback);
163
164    if (port_status  == PORT_SUCCESS)
165    {
166        bta_hf_client_setup_port(bta_hf_client_cb.scb.serv_handle);
167    }
168    else
169    {
170        /* TODO: can we handle this better? */
171        APPL_TRACE_DEBUG("bta_hf_client_start_server: RFCOMM_CreateConnection returned error:%d", port_status);
172    }
173
174    APPL_TRACE_DEBUG("bta_hf_client_start_server handle: %d", bta_hf_client_cb.scb.serv_handle);
175}
176
177/*******************************************************************************
178**
179** Function         bta_hf_client_close_server
180**
181** Description      Close RFCOMM server port for use by HF Client.
182**
183**
184** Returns          void
185**
186*******************************************************************************/
187void bta_hf_client_close_server(void)
188{
189    APPL_TRACE_DEBUG("%s %d", __FUNCTION__, bta_hf_client_cb.scb.serv_handle);
190
191    if (bta_hf_client_cb.scb.serv_handle == 0)
192    {
193        APPL_TRACE_DEBUG("%s already stopped", __FUNCTION__);
194        return;
195    }
196
197    RFCOMM_RemoveServer(bta_hf_client_cb.scb.serv_handle);
198    bta_hf_client_cb.scb.serv_handle = 0;
199}
200
201/*******************************************************************************
202**
203** Function         bta_hf_client_rfc_do_open
204**
205** Description      Open an RFCOMM connection to the peer device.
206**
207**
208** Returns          void
209**
210*******************************************************************************/
211void bta_hf_client_rfc_do_open(tBTA_HF_CLIENT_DATA *p_data)
212{
213    BTM_SetSecurityLevel(TRUE, "", BTM_SEC_SERVICE_HF_HANDSFREE,
214                            bta_hf_client_cb.scb.cli_sec_mask, BT_PSM_RFCOMM,
215                            BTM_SEC_PROTO_RFCOMM, bta_hf_client_cb.scb.peer_scn);
216
217    if (RFCOMM_CreateConnection(UUID_SERVCLASS_HF_HANDSFREE, bta_hf_client_cb.scb.peer_scn,
218            FALSE, BTA_HF_CLIENT_MTU, bta_hf_client_cb.scb.peer_addr, &(bta_hf_client_cb.scb.conn_handle),
219            bta_hf_client_mgmt_cback) == PORT_SUCCESS)
220    {
221        bta_hf_client_setup_port(bta_hf_client_cb.scb.conn_handle);
222        APPL_TRACE_DEBUG("bta_hf_client_rfc_do_open : conn_handle = %d", bta_hf_client_cb.scb.conn_handle);
223    }
224    /* RFCOMM create connection failed; send ourselves RFCOMM close event */
225    else
226    {
227        bta_hf_client_sm_execute(BTA_HF_CLIENT_RFC_CLOSE_EVT, p_data);
228    }
229}
230
231/*******************************************************************************
232**
233** Function         bta_hf_client_rfc_do_close
234**
235** Description      Close RFCOMM connection.
236**
237**
238** Returns          void
239**
240*******************************************************************************/
241void bta_hf_client_rfc_do_close(tBTA_HF_CLIENT_DATA *p_data)
242{
243    tBTA_HF_CLIENT_RFC     *p_buf;
244    UNUSED(p_data);
245
246    if (bta_hf_client_cb.scb.conn_handle)
247    {
248        RFCOMM_RemoveConnection(bta_hf_client_cb.scb.conn_handle);
249    }
250    else
251    {
252        /* Close API was called while HF Client is in Opening state.        */
253        /* Need to trigger the state machine to send callback to the app    */
254        /* and move back to INIT state.                                     */
255        if ((p_buf = (tBTA_HF_CLIENT_RFC *) GKI_getbuf(sizeof(tBTA_HF_CLIENT_RFC))) != NULL)
256        {
257            p_buf->hdr.event = BTA_HF_CLIENT_RFC_CLOSE_EVT;
258            bta_sys_sendmsg(p_buf);
259        }
260
261        /* Cancel SDP if it had been started. */
262        if(bta_hf_client_cb.scb.p_disc_db)
263        {
264            (void)SDP_CancelServiceSearch (bta_hf_client_cb.scb.p_disc_db);
265            bta_hf_client_free_db(NULL);
266        }
267    }
268}
269