projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 4bec325f | 1 | #ifndef lint |
| accbc2e3 | 2 | static char sccsid[] = "@(#)route.c 4.3 82/10/07"; |
| 4bec325f BJ |
3 | #endif |
| 4 | ||
| 5 | #include <stdio.h> | |
| 6 | #include <sys/types.h> | |
| 7 | #include <sys/socket.h> | |
| 8 | #include <sys/ioctl.h> | |
| 9 | #include <net/route.h> | |
| 10 | #include <net/in.h> | |
| 11 | #include <errno.h> | |
| 12 | #include <ctype.h> | |
| accbc2e3 | 13 | #include <netdb.h> |
| 4bec325f BJ |
14 | |
| 15 | struct rtentry route; | |
| 16 | int options; | |
| 17 | int s; | |
| 18 | struct sockaddr_in sin = { AF_INET }; | |
| 19 | ||
| 20 | main(argc, argv) | |
| 21 | int argc; | |
| 22 | char *argv[]; | |
| 23 | { | |
| 24 | ||
| 25 | if (argc < 2) | |
| 26 | printf("usage: route [ cmd ] [ args ]\n"), exit(1); | |
| 27 | s = socket(SOCK_RAW, 0, 0, options); | |
| 28 | if (s < 0) { | |
| 29 | perror("socket"); | |
| 30 | exit(1); | |
| 31 | } | |
| 32 | argc--, argv++; | |
| 33 | if (strcmp(*argv, "add") == 0) | |
| 34 | newroute(argc, argv); | |
| 35 | else if (strcmp(*argv, "delete") == 0) | |
| 36 | newroute(argc, argv); | |
| 37 | else if (strcmp(*argv, "change") == 0) | |
| 38 | changeroute(argc-1, argv+1); | |
| 39 | else | |
| 40 | printf("%s: huh?\n", *argv); | |
| 41 | } | |
| 42 | ||
| 43 | newroute(argc, argv) | |
| 44 | int argc; | |
| 45 | char *argv[]; | |
| 46 | { | |
| 47 | struct sockaddr_in *sin; | |
| 48 | char *cmd; | |
| 49 | ||
| 183ef13b SL |
50 | if (argc < 3 || argc > 4) { |
| 51 | printf("usage: %s destination gateway [ metric ]\n", argv[0]); | |
| 4bec325f BJ |
52 | return; |
| 53 | } | |
| 183ef13b SL |
54 | cmd = argv[0]; |
| 55 | getaddr(argv[1], &route.rt_dst); | |
| 56 | getaddr(argv[2], &route.rt_gateway); | |
| 4bec325f BJ |
57 | sin = (struct sockaddr_in *)&route.rt_dst; |
| 58 | route.rt_flags = RTF_UP; | |
| accbc2e3 | 59 | if (inet_lnaof(sin->sin_addr) != 0) |
| 4bec325f | 60 | route.rt_flags |= RTF_HOST; |
| 183ef13b SL |
61 | if (argc > 3 && atoi(argv[3]) > 0) |
| 62 | route.rt_flags |= RTF_GATEWAY; | |
| 63 | printf("%s %x: gateway %x, flags %x\n", cmd, sin->sin_addr, | |
| 64 | ((struct sockaddr_in *)&route.rt_gateway)->sin_addr, | |
| 65 | route.rt_flags); | |
| 4bec325f BJ |
66 | if (ioctl(s, *cmd == 'a' ? SIOCADDRT : SIOCDELRT, (caddr_t)&route)) |
| 67 | error(cmd); | |
| 68 | } | |
| 69 | ||
| 70 | changeroute(argc, argv) | |
| 71 | int argc; | |
| 72 | char *argv[]; | |
| 73 | { | |
| 74 | printf("not supported\n"); | |
| 75 | } | |
| 76 | ||
| 77 | error(cmd) | |
| 78 | char *cmd; | |
| 79 | { | |
| 80 | extern int errno; | |
| 81 | ||
| 82 | if (errno == ESRCH) | |
| 83 | fprintf(stderr, "not in table\n"); | |
| 84 | else if (errno == EBUSY) | |
| 85 | fprintf(stderr, "entry in use\n"); | |
| 86 | else if (errno == ENOBUFS) | |
| 87 | fprintf(stderr, "routing table overflow\n"); | |
| 88 | else | |
| 89 | perror(cmd); | |
| 90 | } | |
| 91 | ||
| 92 | getaddr(s, sin) | |
| 93 | char *s; | |
| 94 | struct sockaddr_in *sin; | |
| 95 | { | |
| accbc2e3 SL |
96 | struct hostent *hp; |
| 97 | ||
| 98 | hp = gethostbyname(s); | |
| 99 | if (hp == 0) { | |
| 100 | sin->sin_addr.s_addr = inet_addr(s); | |
| 101 | if (sin->sin_addr.s_addr == -1) { | |
| 102 | fprintf(stderr, "%s: bad value\n", s); | |
| 103 | exit(1); | |
| 104 | } | |
| 105 | sin->sin_family = AF_INET; | |
| 4bec325f | 106 | return; |
| 4bec325f | 107 | } |
| accbc2e3 SL |
108 | sin->sin_family = hp->h_addrtype; |
| 109 | bcopy(hp->h_addr, &sin->sin_addr, hp->h_length); | |
| 183ef13b | 110 | } |