The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 1 | /* system/bin/netcfg/netcfg.c |
| 2 | ** |
| 3 | ** Copyright 2006, The Android Open Source Project |
| 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 | #include <stdio.h> |
| 19 | #include <stdlib.h> |
| 20 | #include <errno.h> |
| 21 | #include <dirent.h> |
Szymon Jakubczak | 8c85a00 | 2010-06-09 16:11:09 -0400 | [diff] [blame^] | 22 | #include <netinet/ether.h> |
| 23 | |
| 24 | #include <netutils/ifc.h> |
| 25 | #include <netutils/dhcp.h> |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 26 | |
| 27 | static int verbose = 0; |
| 28 | |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 29 | |
| 30 | void die(const char *reason) |
| 31 | { |
| 32 | perror(reason); |
| 33 | exit(1); |
| 34 | } |
| 35 | |
Szymon Jakubczak | 8c85a00 | 2010-06-09 16:11:09 -0400 | [diff] [blame^] | 36 | const char *ipaddr(in_addr_t addr) |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 37 | { |
Szymon Jakubczak | 8c85a00 | 2010-06-09 16:11:09 -0400 | [diff] [blame^] | 38 | struct in_addr in_addr; |
| 39 | |
| 40 | in_addr.s_addr = addr; |
| 41 | return inet_ntoa(in_addr); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 42 | } |
| 43 | |
| 44 | void usage(void) |
| 45 | { |
| 46 | fprintf(stderr,"usage: netcfg [<interface> {dhcp|up|down}]\n"); |
| 47 | exit(1); |
| 48 | } |
| 49 | |
| 50 | int dump_interface(const char *name) |
| 51 | { |
| 52 | unsigned addr, mask, flags; |
| 53 | |
| 54 | if(ifc_get_info(name, &addr, &mask, &flags)) { |
| 55 | return 0; |
| 56 | } |
| 57 | |
| 58 | printf("%-8s %s ", name, flags & 1 ? "UP " : "DOWN"); |
| 59 | printf("%-16s", ipaddr(addr)); |
| 60 | printf("%-16s", ipaddr(mask)); |
| 61 | printf("0x%08x\n", flags); |
| 62 | return 0; |
| 63 | } |
| 64 | |
| 65 | int dump_interfaces(void) |
| 66 | { |
| 67 | DIR *d; |
| 68 | struct dirent *de; |
| 69 | |
| 70 | d = opendir("/sys/class/net"); |
| 71 | if(d == 0) return -1; |
| 72 | |
| 73 | while((de = readdir(d))) { |
| 74 | if(de->d_name[0] == '.') continue; |
| 75 | dump_interface(de->d_name); |
| 76 | } |
| 77 | closedir(d); |
| 78 | return 0; |
| 79 | } |
| 80 | |
Szymon Jakubczak | 8c85a00 | 2010-06-09 16:11:09 -0400 | [diff] [blame^] | 81 | int set_hwaddr(const char *name, const char *asc) { |
| 82 | struct ether_addr *addr = ether_aton(asc); |
| 83 | if (!addr) { |
| 84 | printf("Failed to parse '%s'\n", asc); |
| 85 | return -1; |
| 86 | } |
| 87 | return ifc_set_hwaddr(name, addr->ether_addr_octet); |
| 88 | } |
| 89 | |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 90 | struct |
| 91 | { |
| 92 | const char *name; |
| 93 | int nargs; |
| 94 | void *func; |
| 95 | } CMDS[] = { |
| 96 | { "dhcp", 1, do_dhcp }, |
| 97 | { "up", 1, ifc_up }, |
| 98 | { "down", 1, ifc_down }, |
| 99 | { "flhosts", 1, ifc_remove_host_routes }, |
| 100 | { "deldefault", 1, ifc_remove_default_route }, |
Szymon Jakubczak | 8c85a00 | 2010-06-09 16:11:09 -0400 | [diff] [blame^] | 101 | { "hwaddr", 2, set_hwaddr }, |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 102 | { 0, 0, 0 }, |
| 103 | }; |
| 104 | |
| 105 | static int call_func(void *_func, unsigned nargs, char **args) |
| 106 | { |
| 107 | switch(nargs){ |
| 108 | case 1: { |
| 109 | int (*func)(char *a0) = _func; |
| 110 | return func(args[0]); |
| 111 | } |
| 112 | case 2: { |
| 113 | int (*func)(char *a0, char *a1) = _func; |
| 114 | return func(args[0], args[1]); |
| 115 | } |
| 116 | case 3: { |
| 117 | int (*func)(char *a0, char *a1, char *a2) = _func; |
| 118 | return func(args[0], args[1], args[2]); |
| 119 | } |
| 120 | default: |
| 121 | return -1; |
| 122 | } |
| 123 | } |
| 124 | |
| 125 | int main(int argc, char **argv) |
| 126 | { |
| 127 | char *iname; |
| 128 | int n; |
| 129 | |
| 130 | if(ifc_init()) { |
| 131 | die("Cannot perform requested operation"); |
| 132 | } |
| 133 | |
| 134 | if(argc == 1) { |
| 135 | int result = dump_interfaces(); |
| 136 | ifc_close(); |
| 137 | return result; |
| 138 | } |
| 139 | |
| 140 | if(argc < 3) usage(); |
| 141 | |
| 142 | iname = argv[1]; |
| 143 | if(strlen(iname) > 16) usage(); |
| 144 | |
| 145 | argc -= 2; |
| 146 | argv += 2; |
| 147 | while(argc > 0) { |
| 148 | for(n = 0; CMDS[n].name; n++){ |
| 149 | if(!strcmp(argv[0], CMDS[n].name)) { |
| 150 | char *cmdname = argv[0]; |
| 151 | int nargs = CMDS[n].nargs; |
| 152 | |
| 153 | argv[0] = iname; |
| 154 | if(argc < nargs) { |
| 155 | fprintf(stderr, "not enough arguments for '%s'\n", cmdname); |
| 156 | ifc_close(); |
| 157 | exit(1); |
| 158 | } |
| 159 | if(call_func(CMDS[n].func, nargs, argv)) { |
| 160 | fprintf(stderr, "action '%s' failed (%s)\n", cmdname, strerror(errno)); |
| 161 | ifc_close(); |
| 162 | exit(1); |
| 163 | } |
| 164 | argc -= nargs; |
| 165 | argv += nargs; |
| 166 | goto done; |
| 167 | } |
| 168 | } |
| 169 | fprintf(stderr,"no such action '%s'\n", argv[0]); |
| 170 | usage(); |
| 171 | done: |
| 172 | ; |
| 173 | } |
| 174 | ifc_close(); |
| 175 | |
| 176 | return 0; |
| 177 | } |