diff options
Diffstat (limited to 'networking/route.c')
| -rw-r--r-- | networking/route.c | 243 |
1 files changed, 240 insertions, 3 deletions
diff --git a/networking/route.c b/networking/route.c index 26162ee..76e76b4 100644 --- a/networking/route.c +++ b/networking/route.c @@ -1,7 +1,7 @@ /* route * * Similar to the standard Unix route, but with only the necessary - * parts for AF_INET + * parts for AF_INET and AF_INET6 * * Bjorn Wesen, Axis Communications AB * @@ -15,16 +15,19 @@ * Foundation; either version 2 of the License, or (at * your option) any later version. * - * $Id: route.c,v 1.16 2002/05/16 19:14:15 sandman Exp $ + * $Id: route.c,v 1.17 2002/07/03 11:46:34 andersen Exp $ * * displayroute() code added by Vladimir N. Oleynik <dzo@simtreas.ru> * adjustments by Larry Doolittle <LRDoolittle@lbl.gov> + * + * IPV6 support added by Bart Visscher <magick@linux-fan.com> */ #include <sys/types.h> #include <sys/ioctl.h> #include "inet_common.h" #include <net/route.h> +#include <net/if.h> #include <linux/param.h> // HZ #include <stdio.h> #include <errno.h> @@ -325,6 +328,139 @@ INET_setroute(int action, int options, char **args) return EXIT_SUCCESS; } +#if CONFIG_FEATURE_IPV6 +static int INET6_setroute(int action, int options, char **args) +{ + struct in6_rtmsg rt; + struct ifreq ifr; + struct sockaddr_in6 sa6; + char target[128], gateway[128] = "NONE"; + int metric, prefix_len; + char *devname = NULL; + char *cp; + int skfd; + + if (*args == NULL) + show_usage(); + + strcpy(target, *args++); + if (!strcmp(target, "default")) { + prefix_len = 0; + memset(&sa6, 0, sizeof(sa6)); + } else { + if ((cp = strchr(target, '/'))) { + prefix_len = atol(cp + 1); + if ((prefix_len < 0) || (prefix_len > 128)) + show_usage(); + *cp = 0; + } else { + prefix_len = 128; + } + if (INET6_resolve(target, (struct sockaddr_in6 *)&sa6) < 0) { + error_msg(_("can't resolve %s"), target); + return EXIT_FAILURE; /* XXX change to E_something */ + } + } + + /* Clean out the RTREQ structure. */ + memset((char *) &rt, 0, sizeof(struct in6_rtmsg)); + + memcpy(&rt.rtmsg_dst, sa6.sin6_addr.s6_addr, sizeof(struct in6_addr)); + + /* Fill in the other fields. */ + rt.rtmsg_flags = RTF_UP; + if (prefix_len == 128) + rt.rtmsg_flags |= RTF_HOST; + rt.rtmsg_metric = 1; + rt.rtmsg_dst_len = prefix_len; + + while (*args) { + if (!strcmp(*args, "metric")) { + + args++; + if (!*args || !isdigit(**args)) + show_usage(); + metric = atoi(*args); + rt.rtmsg_metric = metric; + args++; + continue; + } + if (!strcmp(*args, "gw") || !strcmp(*args, "gateway")) { + args++; + if (!*args) + show_usage(); + if (rt.rtmsg_flags & RTF_GATEWAY) + show_usage(); + strcpy(gateway, *args); + if (INET6_resolve(gateway, (struct sockaddr_in6 *)&sa6) < 0) { + error_msg(_("can't resolve gw %s"), gateway); + return (E_LOOKUP); + } + memcpy(&rt.rtmsg_gateway, sa6.sin6_addr.s6_addr, + sizeof(struct in6_addr)); + rt.rtmsg_flags |= RTF_GATEWAY; + args++; + continue; + } + if (!strcmp(*args, "mod")) { + args++; + rt.rtmsg_flags |= RTF_MODIFIED; + continue; + } + if (!strcmp(*args, "dyn")) { + args++; + rt.rtmsg_flags |= RTF_DYNAMIC; + continue; + } + if (!strcmp(*args, "device") || !strcmp(*args, "dev")) { + args++; + if (!*args) + show_usage(); + } else if (args[1]) + show_usage(); + + devname = *args; + args++; + } + + /* Create a socket to the INET6 kernel. */ + if ((skfd = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { + perror("socket"); + return (E_SOCK); + } + if (devname) { + memset(&ifr, 0, sizeof(ifr)); + strcpy(ifr.ifr_name, devname); + + if (ioctl(skfd, SIOGIFINDEX, &ifr) < 0) { + perror("SIOGIFINDEX"); + return (E_SOCK); + } + rt.rtmsg_ifindex = ifr.ifr_ifindex; + } else + rt.rtmsg_ifindex = 0; + + /* Tell the kernel to accept this route. */ + if (action == RTACTION_DEL) { + if (ioctl(skfd, SIOCDELRT, &rt) < 0) { + perror("SIOCDELRT"); + close(skfd); + return (E_SOCK); + } + } else { + if (ioctl(skfd, SIOCADDRT, &rt) < 0) { + perror("SIOCADDRT"); + close(skfd); + return (E_SOCK); + } + } + + /* Close the socket. */ + (void) close(skfd); + return (0); +} +#endif + #ifndef RTF_UP /* Keep this in sync with /usr/src/linux/include/linux/route.h */ #define RTF_UP 0x0001 /* route usable */ @@ -418,17 +554,103 @@ void displayroutes(int noresolve, int netstatfmt) } } +#if CONFIG_FEATURE_IPV6 +static void INET6_displayroutes(int noresolve) +{ + char buff[256]; + char iface[16], flags[16]; + char addr6[128], naddr6[128]; + struct sockaddr_in6 saddr6, snaddr6; + int iflags, metric, refcnt, use, prefix_len, slen; + int numeric; + + char addr6p[8][5], saddr6p[8][5], naddr6p[8][5]; + + FILE *fp = xfopen("/proc/net/ipv6_route", "r"); + flags[0]='U'; + + if(noresolve) + noresolve = 0x0fff; + numeric = noresolve | 0x8000; /* default instead of * */ + + printf("Kernel IPv6 routing table\n" + "Destination " + "Next Hop " + "Flags Metric Ref Use Iface\n"); + + while( fgets(buff, sizeof(buff), fp) != NULL ) { + int ifl; + + if(sscanf(buff, "%4s%4s%4s%4s%4s%4s%4s%4s %02x " + "%4s%4s%4s%4s%4s%4s%4s%4s %02x " + "%4s%4s%4s%4s%4s%4s%4s%4s %08x %08x %08x %08x %s\n", + addr6p[0], addr6p[1], addr6p[2], addr6p[3], + addr6p[4], addr6p[5], addr6p[6], addr6p[7], + &prefix_len, + saddr6p[0], saddr6p[1], saddr6p[2], saddr6p[3], + saddr6p[4], saddr6p[5], saddr6p[6], saddr6p[7], + &slen, + naddr6p[0], naddr6p[1], naddr6p[2], naddr6p[3], + naddr6p[4], naddr6p[5], naddr6p[6], naddr6p[7], + &metric, &use, &refcnt, &iflags, iface)!=31) { + error_msg_and_die( "Unsuported kernel route format\n"); + } + + ifl = 1; /* parse flags */ + if (!(iflags & RTF_UP)) + continue; + if (iflags & RTF_GATEWAY) + flags[ifl++]='G'; + if (iflags & RTF_HOST) + flags[ifl++]='H'; + if (iflags & RTF_DEFAULT) + flags[ifl++]='D'; + if (iflags & RTF_ADDRCONF) + flags[ifl++]='A'; + if (iflags & RTF_CACHE) + flags[ifl++]='C'; + flags[ifl]=0; + + /* Fetch and resolve the target address. */ + snprintf(addr6, sizeof(addr6), "%s:%s:%s:%s:%s:%s:%s:%s", + addr6p[0], addr6p[1], addr6p[2], addr6p[3], + addr6p[4], addr6p[5], addr6p[6], addr6p[7]); + inet_pton(AF_INET6, addr6, (struct sockaddr *) &saddr6.sin6_addr); + saddr6.sin6_family=AF_INET6; + + INET6_rresolve(addr6, sizeof(addr6), (struct sockaddr_in6 *) &saddr6, numeric); + snprintf(addr6, sizeof(addr6), "%s/%d", addr6, prefix_len); + + /* Fetch and resolve the nexthop address. */ + snprintf(naddr6, sizeof(naddr6), "%s:%s:%s:%s:%s:%s:%s:%s", + naddr6p[0], naddr6p[1], naddr6p[2], naddr6p[3], + naddr6p[4], naddr6p[5], naddr6p[6], naddr6p[7]); + inet_pton(AF_INET6, naddr6, (struct sockaddr *) &snaddr6.sin6_addr); + snaddr6.sin6_family=AF_INET6; + + INET6_rresolve(naddr6, sizeof(naddr6), (struct sockaddr_in6 *) &snaddr6, numeric); + + /* Print the info. */ + printf("%-43s %-39s %-5s %-6d %-2d %7d %-8s\n", + addr6, naddr6, flags, metric, refcnt, use, iface); + } +} +#endif + int route_main(int argc, char **argv) { int opt; int what = 0; +#if CONFIG_FEATURE_IPV6 + int af=AF_INET; +#endif if ( !argv [1] || ( argv [1][0] == '-' )) { /* check options */ int noresolve = 0; int extended = 0; - while ((opt = getopt(argc, argv, "ne")) > 0) { + while ((opt = getopt(argc, argv, "A:ne")) > 0) { switch (opt) { case 'n': noresolve = 1; @@ -436,11 +658,22 @@ int route_main(int argc, char **argv) case 'e': extended = 1; break; + case 'A': +#if CONFIG_FEATURE_IPV6 + if (strcmp(optarg, "inet6")==0) + af=AF_INET6; + break; +#endif default: show_usage ( ); } } +#if CONFIG_FEATURE_IPV6 + if (af==AF_INET6) + INET6_displayroutes(*argv != NULL); + else +#endif displayroutes ( noresolve, extended ); return EXIT_SUCCESS; } else { @@ -455,5 +688,9 @@ int route_main(int argc, char **argv) show_usage(); } +#if CONFIG_FEATURE_IPV6 + if (af==AF_INET6) + return INET6_setroute(what, 0, argv+2); +#endif return INET_setroute(what, 0, argv+2 ); } |