The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 1 | |
| 2 | #include <stdio.h> |
| 3 | #include <stdlib.h> |
| 4 | #include <unistd.h> |
Chung-yih Wang | 98c297f | 2009-04-14 18:45:32 -0700 | [diff] [blame^] | 5 | #include <stdarg.h> |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 6 | |
| 7 | #include <errno.h> |
| 8 | #include <string.h> |
| 9 | #include <ctype.h> |
| 10 | |
| 11 | #include <sys/socket.h> |
| 12 | #include <netinet/in.h> |
| 13 | #include <linux/if.h> |
| 14 | #include <linux/sockios.h> |
| 15 | #include <arpa/inet.h> |
| 16 | #include <linux/route.h> |
| 17 | |
Chung-yih Wang | 98c297f | 2009-04-14 18:45:32 -0700 | [diff] [blame^] | 18 | static void die(const char *fmt, ...) |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 19 | { |
Chung-yih Wang | 98c297f | 2009-04-14 18:45:32 -0700 | [diff] [blame^] | 20 | va_list p; |
| 21 | |
| 22 | va_start(p, fmt); |
| 23 | fprintf(stderr,"error(%s): ", strerror(errno)); |
| 24 | fprintf(stderr, fmt, p); |
| 25 | va_end(p); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 26 | exit(-1); |
| 27 | } |
| 28 | |
| 29 | static inline void init_sockaddr_in(struct sockaddr_in *sin, const char *addr) |
| 30 | { |
| 31 | sin->sin_family = AF_INET; |
| 32 | sin->sin_port = 0; |
| 33 | sin->sin_addr.s_addr = inet_addr(addr); |
| 34 | } |
| 35 | |
| 36 | #define ADVANCE(argc, argv) do { argc--, argv++; } while(0) |
| 37 | #define EXPECT_NEXT(argc, argv) do { \ |
| 38 | ADVANCE(argc, argv); \ |
| 39 | if (0 == argc) { \ |
| 40 | errno = EINVAL; \ |
| 41 | die("expecting one more argument"); \ |
| 42 | } \ |
| 43 | } while(0) |
| 44 | |
Chung-yih Wang | 98c297f | 2009-04-14 18:45:32 -0700 | [diff] [blame^] | 45 | /* current support the following routing entries */ |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 46 | /* route add default dev wlan0 */ |
| 47 | /* route add default gw 192.168.20.1 dev wlan0 */ |
Chung-yih Wang | 98c297f | 2009-04-14 18:45:32 -0700 | [diff] [blame^] | 48 | /* route add net 192.168.1.1 netmask 255.255.255.0 gw 172.24.192.10 */ |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 49 | |
| 50 | int route_main(int argc, char *argv[]) |
| 51 | { |
| 52 | struct ifreq ifr; |
| 53 | int s,i; |
| 54 | struct rtentry rt; |
| 55 | struct sockaddr_in ina; |
| 56 | |
| 57 | if(argc == 0) return 0; |
| 58 | |
| 59 | strncpy(ifr.ifr_name, argv[0], IFNAMSIZ); |
| 60 | ifr.ifr_name[IFNAMSIZ-1] = 0; |
| 61 | ADVANCE(argc, argv); |
| 62 | |
| 63 | if((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { |
| 64 | die("cannot open control socket\n"); |
| 65 | } |
| 66 | |
| 67 | while(argc > 0){ |
| 68 | if(!strcmp(argv[0], "add")) { |
| 69 | EXPECT_NEXT(argc, argv); |
| 70 | if(!strcmp(argv[0], "default")) { |
| 71 | EXPECT_NEXT(argc, argv); |
| 72 | memset((char *) &rt, 0, sizeof(struct rtentry)); |
| 73 | rt.rt_dst.sa_family = AF_INET; |
| 74 | if(!strcmp(argv[0], "dev")) { |
| 75 | EXPECT_NEXT(argc, argv); |
| 76 | rt.rt_flags = RTF_UP | RTF_HOST; |
| 77 | rt.rt_dev = argv[0]; |
Chung-yih Wang | 98c297f | 2009-04-14 18:45:32 -0700 | [diff] [blame^] | 78 | if (ioctl(s, SIOCADDRT, &rt) < 0) die("SIOCADDRT\n"); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 79 | }else if(!strcmp(argv[0], "gw")) { |
| 80 | EXPECT_NEXT(argc, argv); |
| 81 | rt.rt_flags = RTF_UP | RTF_GATEWAY; |
| 82 | init_sockaddr_in((struct sockaddr_in *)&(rt.rt_genmask), "0.0.0.0"); |
| 83 | if(isdigit(argv[0][0])){ |
| 84 | init_sockaddr_in((struct sockaddr_in *)&(rt.rt_gateway), argv[0]); |
| 85 | }else{ |
Chung-yih Wang | 98c297f | 2009-04-14 18:45:32 -0700 | [diff] [blame^] | 86 | die("expecting an IP address for parameter \"gw\"\n"); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 87 | } |
| 88 | EXPECT_NEXT(argc, argv); |
| 89 | if(!strcmp(argv[0], "dev")) { |
| 90 | EXPECT_NEXT(argc, argv); |
| 91 | rt.rt_dev = argv[0]; |
| 92 | if (ioctl(s, SIOCADDRT, &rt) < 0){ |
Chung-yih Wang | 98c297f | 2009-04-14 18:45:32 -0700 | [diff] [blame^] | 93 | die("SIOCADDRT\n"); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 94 | } |
| 95 | } |
| 96 | } |
Chung-yih Wang | 98c297f | 2009-04-14 18:45:32 -0700 | [diff] [blame^] | 97 | } else { |
| 98 | char keywords[3][5] = { "net", "mask", "gw" }; |
| 99 | struct sockaddr_in *paddr[3] = { &rt.rt_dst, &rt.rt_genmask, &rt.rt_gateway }; |
| 100 | int k = 0; |
| 101 | |
| 102 | memset((char *) &rt, 0, sizeof(struct rtentry)); |
| 103 | rt.rt_flags = RTF_UP | RTF_GATEWAY; |
| 104 | do { |
| 105 | if(!strcmp(argv[0], keywords[k])) { |
| 106 | EXPECT_NEXT(argc, argv); |
| 107 | if(isdigit(argv[0][0])) { |
| 108 | init_sockaddr_in(paddr[k], argv[0]); |
| 109 | } else { |
| 110 | die("expecting an IP/MASK address for parameter %s\n", keywords[k]); |
| 111 | } |
| 112 | if(k < 2) EXPECT_NEXT(argc, argv); |
| 113 | } else { |
| 114 | die("expecting keyword(s)\n"); |
| 115 | } |
| 116 | } while(++k < 3); |
| 117 | if(ioctl(s, SIOCADDRT, &rt) < 0) { |
| 118 | die("SIOCADDRT\n"); |
| 119 | } |
| 120 | } |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 121 | } |
| 122 | ADVANCE(argc, argv); |
| 123 | } |
| 124 | |
| 125 | return 0; |
| 126 | } |