1 /*
2 * Copyright (C) 2019 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 <errno.h>
18 #include <netinet/in.h>
19 #include <stddef.h>
20 #include <stdio.h>
21 #include <stdlib.h>
22 #include <string.h>
23 #include <sys/socket.h>
24 #include <sys/un.h>
25 #include <unistd.h>
26
27 const char* kDomainSocketName = "@RunasConnectAppSocket";
28
SetUnixSocketAddr(const char * name,struct sockaddr_un * addr_un,socklen_t * addr_len)29 void SetUnixSocketAddr(const char* name, struct sockaddr_un* addr_un,
30 socklen_t* addr_len) {
31 memset(addr_un, 0, sizeof(*addr_un));
32 addr_un->sun_family = AF_UNIX;
33 strcpy(addr_un->sun_path, name);
34 *addr_len = offsetof(struct sockaddr_un, sun_path) + strlen(name);
35
36 if (addr_un->sun_path[0] == '@') {
37 addr_un->sun_path[0] = '\0';
38 }
39 }
40
main()41 int main() {
42 int fd;
43 struct sockaddr_un addr_un;
44 socklen_t addr_len;
45
46 if ((fd = socket(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0)) == -1) {
47 perror("socket error");
48 }
49
50 SetUnixSocketAddr(kDomainSocketName, &addr_un, &addr_len);
51 if (connect(fd, (struct sockaddr*)&addr_un, addr_len) == -1) {
52 perror("connect error");
53 return EXIT_FAILURE;
54 }
55
56 const int kBufferSize = 128;
57 char buf[kBufferSize];
58 memset(buf, 0, kBufferSize);
59 ssize_t result = TEMP_FAILURE_RETRY(read(fd, buf, kBufferSize - 1));
60 if (result >= 0) {
61 printf("%s\n", buf);
62 } else {
63 printf("[connector] read() failed");
64 return EXIT_FAILURE;
65 }
66 return EXIT_SUCCESS;
67 }
68