--- /dev/null
+/*
+ * Copyright (C)2006 USAGI/WIDE Project
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+/*
+ * based on:
+ * $Id: s.ipv6tunnel.c 1.7 02/12/11 11:21:51+02:00 antti@traci.mipl.mediapoli.com $
+ *
+ */
+/*
+ * Author:
+ * Masahide NAKAMURA @USAGI
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <net/if.h>
+#include <netinet/in.h>
+#include <netdb.h>
+#include <unistd.h>
+#include <arpa/inet.h>
+
+#include <asm/types.h>
+#include <linux/sockios.h>
+#include <linux/ip.h>
+#include <linux/if_tunnel.h>
+
+#include "ipv6_tunnel.h"
+
+
+int tunnel_local_packets = 0;
+
+static void usage(void)
+{
+ fprintf(stderr, "Usage: ipv6tunnel { add | change | del | show } [ NAME ]\n");
+ fprintf(stderr, " [ --allow-local-packets ]\n");
+ fprintf(stderr, " [ --use-original-traffic-class ]\n");
+ fprintf(stderr, " [ remote ADDR local ADDR ]\n");
+ fprintf(stderr, " [ dev PHYS_DEV ]\n");
+ fprintf(stderr, " [ encaplimit TEL ]\n");
+ fprintf(stderr, " [ hoplimit HOPLIMIT ]\n");
+ fprintf(stderr, " [ flowlabel FL ]\n");
+ fprintf(stderr, "Where: NAME := STRING\n");
+ fprintf(stderr, " ADDR := IPV6_ADDRESS\n");
+ fprintf(stderr, " HOPLIMIT := 0..255\n");
+ fprintf(stderr, " TEL := { none | 0..255 }\n");
+ fprintf(stderr, " FL := 0x0..0xfffff\n");
+ fprintf(stderr, " PHYS_DEV := STRING\n");
+ exit(-1);
+}
+
+static int do_ioctl_get_ifindex(char *dev)
+{
+ struct ifreq ifr;
+ int fd;
+ int err;
+
+// fprintf(stderr, "do_ioctl_get_ifindex\n");
+
+ strcpy(ifr.ifr_name, dev);
+ fd = socket(AF_INET6, SOCK_DGRAM, 0);
+ err = ioctl(fd, SIOCGIFINDEX, &ifr);
+ if (err) {
+ perror("ioctl");
+ return 0;
+ }
+ close(fd);
+ return ifr.ifr_ifindex;
+}
+
+static char *do_ioctl_get_ifname(int idx)
+{
+ static struct ifreq ifr;
+ int fd;
+ int err;
+
+// fprintf(stderr, "do_ioctl_get_ifname\n");
+
+ ifr.ifr_ifindex = idx;
+ fd = socket(AF_INET6, SOCK_DGRAM, 0);
+ err = ioctl(fd, SIOCGIFNAME, &ifr);
+ if (err) {
+ perror("ioctl");
+ return NULL;
+ }
+ close(fd);
+ return ifr.ifr_name;
+}
+
+static int do_get_ioctl(char *basedev, struct ipv6_tnl_parm *p)
+{
+ struct ifreq ifr;
+ int fd;
+ int err;
+
+// fprintf(stderr, "do_get_ioctl\n");
+
+ strcpy(ifr.ifr_name, basedev);
+ ifr.ifr_ifru.ifru_data = (void *)p;
+ fd = socket(AF_INET6, SOCK_DGRAM, 0);
+ err = ioctl(fd, SIOCGETTUNNEL, &ifr);
+ if (err)
+ perror("ioctl");
+ close(fd);
+ return err;
+}
+
+static int do_add_ioctl(int cmd, char *basedev, struct ipv6_tnl_parm *p)
+{
+ struct ifreq ifr;
+ int fd;
+ int err;
+
+// fprintf(stderr, "do_add_ioctl\n");
+
+ strcpy(ifr.ifr_name, basedev);
+ ifr.ifr_ifru.ifru_data = (void *)p;
+ fd = socket(AF_INET6, SOCK_DGRAM, 0);
+ err = ioctl(fd, cmd, &ifr);
+ if (err)
+ perror("ioctl");
+ close(fd);
+ return err;
+}
+
+
+static int do_del_ioctl(char *basedev, struct ipv6_tnl_parm *p)
+{
+ struct ifreq ifr;
+ int fd;
+ int err;
+
+// fprintf(stderr, "do_del_ioctl\n");
+
+ strcpy(ifr.ifr_name, basedev);
+ ifr.ifr_ifru.ifru_data = (void *)p;
+ fd = socket(AF_INET6, SOCK_DGRAM, 0);
+ err = ioctl(fd, SIOCDELTUNNEL, &ifr);
+ if (err)
+ perror("ioctl");
+ close(fd);
+ return err;
+}
+
+void print_tunnel(struct ipv6_tnl_parm *p)
+{
+ char remote[64];
+ char local[64];
+
+ inet_ntop(AF_INET6, &p->raddr, remote, sizeof(remote));
+ inet_ntop(AF_INET6, &p->laddr, local, sizeof(local));
+
+ printf("%s: %s/IPv6 remote %s local %s",
+ p->name,
+ (p->proto == IPPROTO_IPV6 ? "IPv6" : "unknown"),
+ remote, local);
+ if (p->link) {
+ char *n = do_ioctl_get_ifname(p->link);
+ if (n)
+ printf(" dev %s", n);
+ }
+ if (p->encap_limit)
+ printf(" encaplimit %d", p->encap_limit);
+
+ printf(" hoplimit %d", p->hop_limit);
+
+ if (p->flow_lbl)
+ printf(" flowlabel 0x%x", p->flow_lbl);
+
+ if (p->flags) {
+ char flags[33];
+ char *fp = flags;
+ memset(flags, 0, 33);
+ if (p->flags & IPV6_TNL_F_IGN_ENCAP_LIMIT) {
+ *fp = 'E';
+ fp++;
+ }
+ if (p->flags & IPV6_TNL_F_USE_ORIG_TCLASS) {
+ *fp = 'T';
+ fp++;
+ }
+ if (p->flags & IPV6_TNL_F_ALLOW_LOCAL) {
+ *fp = 'L';
+ fp++;
+ }
+ if (p->flags & IPV6_TNL_F_KERNEL_DEV) {
+ *fp = 'K';
+ fp++;
+ }
+ if (p->flags & IPV6_TNL_F_MIPV6_DEV) {
+ *fp = 'M';
+ fp++;
+ }
+ if (p->flags & IPV6_TNL_F_RCV_ONLY) {
+ *fp = 'R';
+ fp++;
+ }
+ printf(" flags %s", flags);
+ }
+ printf("\n");
+}
+
+void resolve_name(char *name, struct in6_addr *ip6)
+{
+ struct addrinfo ai, *res;
+ int err;
+ memset(&ai, 0, sizeof(struct addrinfo));
+ ai.ai_family = AF_INET6;
+ ai.ai_protocol = IPPROTO_IPV6;
+ ai.ai_flags = AI_NUMERICHOST;
+ err = getaddrinfo(name, NULL, &ai, &res);
+ if (err)
+ exit(-1);
+
+ *ip6 = ((struct sockaddr_in6 *) (res->ai_addr))->sin6_addr;
+ freeaddrinfo(res);
+}
+
+int get_u8(__u8 *val, char *arg)
+{
+ unsigned long res = 0;
+ char *ptr;
+
+ if (!arg || !*arg)
+ return -1;
+ res = strtoul(arg, &ptr, 0);
+ if (!ptr || ptr == arg || *ptr || res > 0xFF)
+ return -1;
+ *val = (__u8) res;
+ return 0;
+}
+
+int get_u20(__u32 *val, char *arg)
+{
+ unsigned long res = 0;
+ char *ptr;
+
+ if (!arg || !*arg)
+ return -1;
+ res = strtoul(arg, &ptr, 0);
+ if (!ptr || ptr == arg || *ptr || res > 0xFFFFF)
+ return -1;
+ *val = res;
+ return 0;
+}
+
+static int parse_args(int argc, char **argv, struct ipv6_tnl_parm *p)
+{
+ char medium[IFNAMSIZ];
+
+// fprintf(stderr, "parse_args\n");
+
+ memset(p, 0, sizeof(*p));
+ p->hop_limit = -1;
+ p->encap_limit = IPV6_DEFAULT_TNL_ENCAP_LIMIT;
+ p->proto = IPPROTO_IPV6;
+ memset(&medium, 0, sizeof(medium));
+
+ while (argc > 0) {
+ if (!strcmp(*argv, "--help") || !strcmp(*argv, "-h")) {
+ usage();
+ } else if (!strcmp(*argv, "--allow-local-packets")) {
+ p->flags |= IPV6_TNL_F_ALLOW_LOCAL;
+ } else if (!strcmp(*argv, "--use-original-traffic-class")) {
+ p->flags |= IPV6_TNL_F_USE_ORIG_TCLASS;
+ } else if (!strcmp(*argv, "remote")) {
+ argv++;
+ if (--argc <= 0)
+ usage();
+ resolve_name(*argv, &p->raddr);
+ } else if (!strcmp(*argv, "local")) {
+ argv++;
+ if (--argc <= 0)
+ usage();
+ resolve_name(*argv, &p->laddr);
+ } else if (!strcmp(*argv, "dev")) {
+ argv++;
+ if (--argc <= 0)
+ usage();
+ strncpy(medium, *argv, IFNAMSIZ - 1);
+ } else if (!strcmp(*argv, "hoplimit")) {
+ __u8 uval;
+ argv++;
+ if (--argc <= 0)
+ usage();
+ if (get_u8(&uval, *argv) < -1)
+ usage();
+ p->hop_limit = uval;
+ } else if (!strcmp(*argv, "flowlabel")) {
+ __u32 uval;
+ argv++;
+ if (--argc <= 0)
+ usage();
+ if (get_u20(&uval, *argv) < -1)
+ usage();
+ p->flow_lbl = uval;
+ } else if (!strcmp(*argv, "encaplimit")) {
+ argv++;
+ if (--argc <= 0)
+ usage();
+ if (!strcmp(*argv, "none")) {
+ p->flags |= IPV6_TNL_F_IGN_ENCAP_LIMIT;
+ } else {
+ __u8 uval;
+ if (get_u8(&uval, *argv) < -1)
+ usage();
+ p->encap_limit = uval;
+ }
+ } else {
+ if (p->name[0])
+ usage();
+ strncpy(p->name, *argv, IFNAMSIZ - 1);
+ }
+ argc--; argv++;
+ }
+ if (medium[0]) {
+ p->link = do_ioctl_get_ifindex(medium);
+ if (p->link == 0)
+ return -1;
+ }
+ return 0;
+}
+
+static int do_show(int argc, char **argv)
+{
+ struct ipv6_tnl_parm p;
+
+ if (parse_args(argc, argv, &p) < 0)
+ return -1;
+
+ if (do_get_ioctl(p.name[0] ? p.name : "ip6tnl0", &p))
+ return -1;
+
+ print_tunnel(&p);
+ return 0;
+}
+
+
+
+
+static int do_add(int cmd, int argc, char **argv)
+{
+ struct ipv6_tnl_parm p;
+
+ if (parse_args(argc, argv, &p) < 0)
+ return -1;
+
+ return do_add_ioctl(cmd,
+ cmd == SIOCCHGTUNNEL && p.name[0] ?
+ p.name : "ip6tnl0", &p);
+}
+
+int do_del(int argc, char **argv)
+{
+ struct ipv6_tnl_parm p;
+
+ if (parse_args(argc, argv, &p) < 0)
+ return -1;
+
+ return do_del_ioctl(p.name[0] ? p.name : "ip6tnl0", &p);
+}
+
+
+int main(int argc, char **argv)
+{
+ argc--;
+ argv++;
+ if (argc > 0) {
+ if (strcmp(*argv, "add") == 0)
+ return do_add(SIOCADDTUNNEL, argc - 1, argv + 1);
+ else if (strcmp(*argv, "change") == 0)
+ return do_add(SIOCCHGTUNNEL, argc - 1, argv + 1);
+ else if (strcmp(*argv, "del") == 0)
+ return do_del(argc - 1, argv + 1);
+ else if (strcmp(*argv, "show") == 0)
+ return do_show(argc - 1, argv + 1);
+ else
+ usage();
+
+ } else
+ return do_show(0, NULL);
+
+ return 0;
+}
projects / mirror_iproute2.git / commitdiff