1 /* 2 * Copyright 2017, 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 "dhcpserver.h" 18 19 #include "log.h" 20 21 #include <arpa/inet.h> 22 #include <net/if.h> 23 24 static void usage(const char* program) { 25 ALOGE("Usage: %s -i <interface> -r <", program); 26 } 27 28 int main(int argc, char* argv[]) { 29 char* excludeInterfaceName = nullptr; 30 unsigned int excludeInterfaceIndex = 0; 31 for (int i = 1; i < argc; ++i) { 32 if (strcmp("--exclude-interface", argv[i]) == 0) { 33 if (i + 1 >= argc) { 34 ALOGE("ERROR: Missing argument to " 35 "--exclude-interfaces parameter"); 36 usage(argv[0]); 37 return 1; 38 } 39 excludeInterfaceName = argv[i + 1]; 40 excludeInterfaceIndex = if_nametoindex(excludeInterfaceName); 41 if (excludeInterfaceIndex == 0) { 42 ALOGE("ERROR: Invalid argument '%s' to --exclude-interface", 43 argv[i + 1]); 44 usage(argv[0]); 45 return 1; 46 } 47 } 48 } 49 50 DhcpServer server(excludeInterfaceIndex); 51 Result res = server.init(); 52 if (!res) { 53 ALOGE("Failed to initialize DHCP server: %s\n", res.c_str()); 54 return 1; 55 } 56 57 res = server.run(); 58 if (!res) { 59 ALOGE("DHCP server failed: %s\n", res.c_str()); 60 return 1; 61 } 62 // This is weird and shouldn't happen, the server should run forever. 63 return 0; 64 } 65 66 67
