1/******************************************************************************
2 *
3 *  Copyright (C) 2009-2012 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 *
22 *  Filename:      btif_hf.c
23 *
24 *  Description:   Handsfree Profile Bluetooth Interface
25 *
26 *
27 ***********************************************************************************/
28#include <hardware/bluetooth.h>
29#include <hardware/bt_sock.h>
30#include <errno.h>
31#include <sys/ioctl.h>
32#include <stdio.h>
33#include <string.h>
34#include <sys/types.h>
35#include <sys/socket.h>
36#include <sys/un.h>
37#include <arpa/inet.h>
38#include <netinet/in.h>
39#include <stdlib.h>
40#include <errno.h>
41#include <unistd.h>
42#include <sys/ioctl.h>
43
44#include <cutils/sockets.h>
45#include <netinet/tcp.h>
46
47
48#define LOG_TAG "BTIF_SOCK"
49#include "btif_common.h"
50#include "btif_util.h"
51
52#include "bta_api.h"
53#include "btif_sock_thread.h"
54#include "btif_sock_sdp.h"
55
56#include "bt_target.h"
57#include "gki.h"
58#include "hcimsgs.h"
59#include "sdp_api.h"
60#include "btu.h"
61#include "btm_api.h"
62#include "btm_int.h"
63#include "bta_jv_api.h"
64#include "bta_jv_co.h"
65#include "port_api.h"
66
67#define asrt(s) if(!(s)) BTIF_TRACE_ERROR("## %s assert %s failed at line:%d ##",__FUNCTION__, #s, __LINE__)
68
69
70int sock_send_all(int sock_fd, const uint8_t* buf, int len)
71{
72    int s = len;
73    int ret;
74    while(s)
75    {
76        do ret = send(sock_fd, buf, s, 0);
77        while(ret < 0 && errno == EINTR);
78        if(ret <= 0)
79        {
80            BTIF_TRACE_ERROR("sock fd:%d send errno:%d, ret:%d", sock_fd, errno, ret);
81            return -1;
82        }
83        buf += ret;
84        s -= ret;
85    }
86    return len;
87}
88int sock_recv_all(int sock_fd, uint8_t* buf, int len)
89{
90    int r = len;
91    int ret = -1;
92    while(r)
93    {
94        do ret = recv(sock_fd, buf, r, MSG_WAITALL);
95        while(ret < 0 && errno == EINTR);
96        if(ret <= 0)
97        {
98            BTIF_TRACE_ERROR("sock fd:%d recv errno:%d, ret:%d", sock_fd, errno, ret);
99            return -1;
100        }
101        buf += ret;
102        r -= ret;
103    }
104    return len;
105}
106
107int sock_send_fd(int sock_fd, const uint8_t* buf, int len, int send_fd)
108{
109    ssize_t ret;
110    struct msghdr msg;
111    unsigned char *buffer = (unsigned char *)buf;
112    memset(&msg, 0, sizeof(msg));
113
114    struct cmsghdr *cmsg;
115    char msgbuf[CMSG_SPACE(1)];
116    asrt(send_fd != -1);
117    if(sock_fd == -1 || send_fd == -1)
118        return -1;
119    // Add any pending outbound file descriptors to the message
120           // See "man cmsg" really
121    msg.msg_control = msgbuf;
122    msg.msg_controllen = sizeof msgbuf;
123    cmsg = CMSG_FIRSTHDR(&msg);
124    cmsg->cmsg_level = SOL_SOCKET;
125    cmsg->cmsg_type = SCM_RIGHTS;
126    cmsg->cmsg_len = CMSG_LEN(sizeof send_fd);
127    memcpy(CMSG_DATA(cmsg), &send_fd, sizeof send_fd);
128
129    // We only write our msg_control during the first write
130    int ret_len = len;
131    while (len > 0) {
132        struct iovec iv;
133        memset(&iv, 0, sizeof(iv));
134
135        iv.iov_base = buffer;
136        iv.iov_len = len;
137
138        msg.msg_iov = &iv;
139        msg.msg_iovlen = 1;
140
141        do {
142            ret = sendmsg(sock_fd, &msg, MSG_NOSIGNAL);
143        } while (ret < 0 && errno == EINTR);
144
145        if (ret < 0) {
146            BTIF_TRACE_ERROR("fd:%d, send_fd:%d, sendmsg ret:%d, errno:%d, %s",
147                              sock_fd, send_fd, (int)ret, errno, strerror(errno));
148            ret_len = -1;
149            break;
150        }
151
152        buffer += ret;
153        len -= ret;
154
155        // Wipes out any msg_control too
156        memset(&msg, 0, sizeof(msg));
157    }
158    BTIF_TRACE_DEBUG("close fd:%d after sent", send_fd);
159    close(send_fd);
160    return ret_len;
161}
162
163
164#define PRINT(s) __android_log_write(ANDROID_LOG_DEBUG, NULL, s)
165static const char* hex_table = "0123456789abcdef";
166static inline void byte2hex(const char* data, char** str)
167{
168    **str = hex_table[(*data >> 4) & 0xf];
169    ++*str;
170    **str = hex_table[*data & 0xf];
171    ++*str;
172}
173static inline void byte2char(const char* data, char** str)
174{
175    **str = *data < ' ' ? '.' : *data > '~' ? '.' : *data;
176    ++(*str);
177}
178static inline void word2hex(const char* data, char** hex)
179{
180    byte2hex(&data[1], hex);
181    byte2hex(&data[0], hex);
182}
183void dump_bin(const char* title, const char* data, int size)
184{
185    char line_buff[256];
186    char *line;
187    int i, j, addr;
188    const int width = 16;
189    ALOGD("%s, size:%d, dump started {", title, size);
190    if(size <= 0)
191        return;
192    //write offset
193    line = line_buff;
194    *line++ = ' ';
195    *line++ = ' ';
196    *line++ = ' ';
197    *line++ = ' ';
198    *line++ = ' ';
199    *line++ = ' ';
200    for(j = 0; j < width; j++)
201    {
202        byte2hex((const char*)&j, &line);
203        *line++ = ' ';
204    }
205    *line = 0;
206    PRINT(line_buff);
207
208    for(i = 0; i < size / width; i++)
209    {
210        line = line_buff;
211        //write address:
212        addr = i*width;
213        word2hex((const char*)&addr, &line);
214        *line++ = ':'; *line++ = ' ';
215        //write hex of data
216        for(j = 0; j < width; j++)
217        {
218            byte2hex(&data[j], &line);
219            *line++ = ' ';
220        }
221        //write char of data
222        for(j = 0; j < width; j++)
223            byte2char(data++, &line);
224        //wirte the end of line
225        *line = 0;
226        //output the line
227        PRINT(line_buff);
228    }
229    //last line of left over if any
230    int leftover = size % width;
231    if(leftover > 0)
232    {
233        line = line_buff;
234        //write address:
235        addr = i*width;
236        word2hex((const char*)&addr, &line);
237        *line++ = ':'; *line++ = ' ';
238        //write hex of data
239        for(j = 0; j < leftover; j++) {
240            byte2hex(&data[j], &line);
241            *line++ = ' ';
242        }
243        //write hex padding
244        for(; j < width; j++) {
245            *line++ = ' ';
246            *line++ = ' ';
247            *line++ = ' ';
248        }
249        //write char of data
250        for(j = 0; j < leftover; j++)
251            byte2char(data++, &line);
252        //write the end of line
253        *line = 0;
254        //output the line
255        PRINT(line_buff);
256    }
257    ALOGD("%s, size:%d, dump ended }", title, size);
258}
259
260