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 #define LOG_TAG "bt_btif_sock"
20
21 #include "btif_sock_util.h"
22
23 #include <arpa/inet.h>
24 #include <errno.h>
25 #include <netinet/in.h>
26 #include <netinet/tcp.h>
27 #include <stdio.h>
28 #include <stdlib.h>
29 #include <string.h>
30 #include <sys/ioctl.h>
31 #include <sys/socket.h>
32 #include <sys/types.h>
33 #include <sys/un.h>
34 #include <unistd.h>
35
36 #include <hardware/bluetooth.h>
37 #include <hardware/bt_sock.h>
38
39 #include "bt_target.h"
40 #include "bta_api.h"
41 #include "bta_jv_api.h"
42 #include "bta_jv_co.h"
43 #include "btif_common.h"
44 #include "btif_sock_sdp.h"
45 #include "btif_sock_thread.h"
46 #include "btif_util.h"
47 #include "btm_api.h"
48 #include "btm_int.h"
49 #include "btu.h"
50 #include "bt_common.h"
51 #include "hcimsgs.h"
52 #include "osi/include/log.h"
53 #include "port_api.h"
54 #include "sdp_api.h"
55
56 #define asrt(s) if(!(s)) BTIF_TRACE_ERROR("## %s assert %s failed at line:%d ##",__FUNCTION__, #s, __LINE__)
57
sock_send_all(int sock_fd,const uint8_t * buf,int len)58 int sock_send_all(int sock_fd, const uint8_t* buf, int len)
59 {
60 int s = len;
61
62 while(s)
63 {
64 ssize_t ret;
65 OSI_NO_INTR(ret = send(sock_fd, buf, s, 0));
66 if(ret <= 0)
67 {
68 BTIF_TRACE_ERROR("sock fd:%d send errno:%d, ret:%d", sock_fd, errno, ret);
69 return -1;
70 }
71 buf += ret;
72 s -= ret;
73 }
74 return len;
75 }
sock_recv_all(int sock_fd,uint8_t * buf,int len)76 int sock_recv_all(int sock_fd, uint8_t* buf, int len)
77 {
78 int r = len;
79
80 while(r)
81 {
82 ssize_t ret;
83 OSI_NO_INTR(ret = recv(sock_fd, buf, r, MSG_WAITALL));
84 if(ret <= 0)
85 {
86 BTIF_TRACE_ERROR("sock fd:%d recv errno:%d, ret:%d", sock_fd, errno, ret);
87 return -1;
88 }
89 buf += ret;
90 r -= ret;
91 }
92 return len;
93 }
94
sock_send_fd(int sock_fd,const uint8_t * buf,int len,int send_fd)95 int sock_send_fd(int sock_fd, const uint8_t* buf, int len, int send_fd)
96 {
97 struct msghdr msg;
98 unsigned char *buffer = (unsigned char *)buf;
99 memset(&msg, 0, sizeof(msg));
100
101 struct cmsghdr *cmsg;
102 char msgbuf[CMSG_SPACE(1)];
103 asrt(send_fd != -1);
104 if(sock_fd == -1 || send_fd == -1)
105 return -1;
106 // Add any pending outbound file descriptors to the message
107 // See "man cmsg" really
108 msg.msg_control = msgbuf;
109 msg.msg_controllen = sizeof msgbuf;
110 cmsg = CMSG_FIRSTHDR(&msg);
111 cmsg->cmsg_level = SOL_SOCKET;
112 cmsg->cmsg_type = SCM_RIGHTS;
113 cmsg->cmsg_len = CMSG_LEN(sizeof send_fd);
114 memcpy(CMSG_DATA(cmsg), &send_fd, sizeof send_fd);
115
116 // We only write our msg_control during the first write
117 int ret_len = len;
118 while (len > 0) {
119 struct iovec iv;
120 memset(&iv, 0, sizeof(iv));
121
122 iv.iov_base = buffer;
123 iv.iov_len = len;
124
125 msg.msg_iov = &iv;
126 msg.msg_iovlen = 1;
127
128 ssize_t ret;
129 OSI_NO_INTR(ret = sendmsg(sock_fd, &msg, MSG_NOSIGNAL));
130 if (ret < 0) {
131 BTIF_TRACE_ERROR("fd:%d, send_fd:%d, sendmsg ret:%d, errno:%d, %s",
132 sock_fd, send_fd, (int)ret, errno, strerror(errno));
133 ret_len = -1;
134 break;
135 }
136
137 buffer += ret;
138 len -= ret;
139
140 // Wipes out any msg_control too
141 memset(&msg, 0, sizeof(msg));
142 }
143 BTIF_TRACE_DEBUG("close fd:%d after sent", send_fd);
144 // TODO: This seems wrong - if the FD is not opened in JAVA before this is called
145 // we get a "socket closed" exception in java, when reading from the socket...
146 close(send_fd);
147 return ret_len;
148 }
149
150 static const char* hex_table = "0123456789abcdef";
byte2hex(const char * data,char ** str)151 static inline void byte2hex(const char* data, char** str)
152 {
153 **str = hex_table[(*data >> 4) & 0xf];
154 ++*str;
155 **str = hex_table[*data & 0xf];
156 ++*str;
157 }
byte2char(const char * data,char ** str)158 static inline void byte2char(const char* data, char** str)
159 {
160 **str = *data < ' ' ? '.' : *data > '~' ? '.' : *data;
161 ++(*str);
162 }
word2hex(const char * data,char ** hex)163 static inline void word2hex(const char* data, char** hex)
164 {
165 byte2hex(&data[1], hex);
166 byte2hex(&data[0], hex);
167 }
dump_bin(const char * title,const char * data,int size)168 void dump_bin(const char* title, const char* data, int size)
169 {
170 char line_buff[256];
171 char *line;
172 int i, j, addr;
173 const int width = 16;
174 LOG_DEBUG(LOG_TAG, "%s, size:%d, dump started {", title, size);
175 if(size <= 0)
176 return;
177 //write offset
178 line = line_buff;
179 *line++ = ' ';
180 *line++ = ' ';
181 *line++ = ' ';
182 *line++ = ' ';
183 *line++ = ' ';
184 *line++ = ' ';
185 for(j = 0; j < width; j++)
186 {
187 byte2hex((const char*)&j, &line);
188 *line++ = ' ';
189 }
190 *line = 0;
191 LOG_DEBUG(LOG_TAG, "%s", line_buff);
192
193 for(i = 0; i < size / width; i++)
194 {
195 line = line_buff;
196 //write address:
197 addr = i*width;
198 word2hex((const char*)&addr, &line);
199 *line++ = ':'; *line++ = ' ';
200 //write hex of data
201 for(j = 0; j < width; j++)
202 {
203 byte2hex(&data[j], &line);
204 *line++ = ' ';
205 }
206 //write char of data
207 for(j = 0; j < width; j++)
208 byte2char(data++, &line);
209 //wirte the end of line
210 *line = 0;
211 //output the line
212 LOG_DEBUG(LOG_TAG, "%s", line_buff);
213 }
214 //last line of left over if any
215 int leftover = size % width;
216 if(leftover > 0)
217 {
218 line = line_buff;
219 //write address:
220 addr = i*width;
221 word2hex((const char*)&addr, &line);
222 *line++ = ':'; *line++ = ' ';
223 //write hex of data
224 for(j = 0; j < leftover; j++) {
225 byte2hex(&data[j], &line);
226 *line++ = ' ';
227 }
228 //write hex padding
229 for(; j < width; j++) {
230 *line++ = ' ';
231 *line++ = ' ';
232 *line++ = ' ';
233 }
234 //write char of data
235 for(j = 0; j < leftover; j++)
236 byte2char(data++, &line);
237 //write the end of line
238 *line = 0;
239 //output the line
240 LOG_DEBUG(LOG_TAG, "%s", line_buff);
241 }
242 LOG_DEBUG(LOG_TAG, "%s, size:%d, dump ended }", title, size);
243 }
244
245