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 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 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
