1 /*
2 * Copyright 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "VtsDriverCommUtil.h"
18
19 #include <errno.h>
20 #include <netdb.h>
21 #include <netinet/in.h>
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <string.h>
25 #include <sys/socket.h>
26 #include <sys/types.h>
27 #include <sys/un.h>
28 #include <unistd.h>
29
30 #include <iostream>
31 #include <sstream>
32
33 #include "test/vts/proto/VtsDriverControlMessage.pb.h"
34
35 using namespace std;
36
37 #define MAX_HEADER_BUFFER_SIZE 128
38
39 namespace android {
40 namespace vts {
41
Connect(const string & socket_name)42 bool VtsDriverCommUtil::Connect(const string& socket_name) {
43 struct sockaddr_un serv_addr;
44 struct hostent* server;
45
46 sockfd_ = socket(PF_UNIX, SOCK_STREAM, 0);
47 if (sockfd_ < 0) {
48 cerr << __func__ << " ERROR opening socket" << endl;
49 return false;
50 }
51
52 server = gethostbyname("127.0.0.1");
53 if (server == NULL) {
54 cerr << __func__ << " ERROR can't resolve the host name, 127.0.0.1" << endl;
55 return false;
56 }
57
58 bzero((char*)&serv_addr, sizeof(serv_addr));
59 serv_addr.sun_family = AF_UNIX;
60 strcpy(serv_addr.sun_path, socket_name.c_str());
61
62 if (connect(sockfd_, (struct sockaddr*)&serv_addr, sizeof(serv_addr)) < 0) {
63 cerr << __func__ << " ERROR connecting to " << socket_name
64 << " errno = " << errno << " " << strerror(errno) << endl;
65 sockfd_ = -1;
66 return false;
67 }
68 return true;
69 }
70
Close()71 int VtsDriverCommUtil::Close() {
72 cout << getpid() << " " << __func__ << endl;
73 int result = 0;
74 if (sockfd_ != -1) {
75 result = close(sockfd_);
76 if (result != 0) {
77 cerr << getpid() << " " << __func__ << ":" << __LINE__
78 << " ERROR closing socket (errno = " << errno << ")" << endl;
79 }
80
81 sockfd_ = -1;
82 }
83
84 return result;
85 }
86
VtsSocketSendBytes(const string & message)87 bool VtsDriverCommUtil::VtsSocketSendBytes(const string& message) {
88 cout << getpid() << " " << __func__ << endl;
89 if (sockfd_ == -1) {
90 cerr << __func__ << " ERROR sockfd not set" << endl;
91 return false;
92 }
93 std::stringstream header;
94 header << message.length() << "\n";
95 cout << getpid() << " [agent->driver] len = " << message.length() << endl;
96 int n = write(sockfd_, header.str().c_str(), header.str().length());
97 if (n < 0) {
98 cerr << getpid() << " " << __func__ << ":" << __LINE__
99 << " ERROR writing to socket" << endl;
100 return false;
101 }
102
103 int bytes_sent = 0;
104 int msg_len = message.length();
105 while (bytes_sent < msg_len) {
106 n = write(sockfd_, &message.c_str()[bytes_sent], msg_len - bytes_sent);
107 if (n <= 0) {
108 cerr << getpid() << " " << __func__ << ":" << __LINE__
109 << " ERROR writing to socket" << endl;
110 return false;
111 }
112 bytes_sent += n;
113 }
114 return true;
115 }
116
VtsSocketRecvBytes()117 string VtsDriverCommUtil::VtsSocketRecvBytes() {
118 cout << getpid() << " " << __func__ << endl;
119 if (sockfd_ == -1) {
120 cerr << getpid() << " " << __func__ << " ERROR sockfd not set" << endl;
121 return string();
122 }
123
124 int header_index = 0;
125 char header_buffer[MAX_HEADER_BUFFER_SIZE];
126
127 for (header_index = 0; header_index < MAX_HEADER_BUFFER_SIZE;
128 header_index++) {
129 int ret = read(sockfd_, &header_buffer[header_index], 1);
130 if (ret != 1) {
131 int errno_save = errno;
132 cerr << getpid() << " " << __func__
133 << " ERROR reading the length ret = " << ret
134 << " sockfd = " << sockfd_ << " "
135 << " errno = " << errno_save << " " << strerror(errno_save) << endl;
136 return string();
137 }
138 if (header_buffer[header_index] == '\n' ||
139 header_buffer[header_index] == '\r') {
140 header_buffer[header_index] = '\0';
141 break;
142 }
143 }
144
145 int msg_len = atoi(header_buffer);
146 char* msg = (char*)malloc(msg_len + 1);
147 if (!msg) {
148 cerr << getpid() << " " << __func__ << " ERROR malloc failed" << endl;
149 return string();
150 }
151
152 int bytes_read = 0;
153 while (bytes_read < msg_len) {
154 int result = read(sockfd_, &msg[bytes_read], msg_len - bytes_read);
155 if (result <= 0) {
156 cerr << getpid() << " " << __func__ << " ERROR read failed" << endl;
157 return string();
158 }
159 bytes_read += result;
160 }
161 msg[msg_len] = '\0';
162 cout << getpid() << " " << __func__ << " recv" << endl;
163 return string(msg, msg_len);
164 }
165
VtsSocketSendMessage(const google::protobuf::Message & message)166 bool VtsDriverCommUtil::VtsSocketSendMessage(
167 const google::protobuf::Message& message) {
168 cout << getpid() << " " << __func__ << endl;
169 if (sockfd_ == -1) {
170 cerr << getpid() << " " << __func__ << " ERROR sockfd not set" << endl;
171 return false;
172 }
173
174 string message_string;
175 if (!message.SerializeToString(&message_string)) {
176 cerr << getpid() << " " << __func__
177 << " ERROR can't serialize the message to a string." << endl;
178 return false;
179 }
180 return VtsSocketSendBytes(message_string);
181 }
182
VtsSocketRecvMessage(google::protobuf::Message * message)183 bool VtsDriverCommUtil::VtsSocketRecvMessage(
184 google::protobuf::Message* message) {
185 cout << getpid() << " " << __func__ << endl;
186 if (sockfd_ == -1) {
187 cerr << getpid() << " " << __func__ << " ERROR sockfd not set" << endl;
188 return false;
189 }
190
191 string message_string = VtsSocketRecvBytes();
192 if (message_string.length() == 0) {
193 cerr << getpid() << " " << __func__ << " ERROR message string zero length"
194 << endl;
195 return false;
196 }
197
198 return message->ParseFromString(message_string);
199 }
200
201 } // namespace vts
202 } // namespace android
203