diff options
Diffstat (limited to 'usr.sbin/ip6addrctl/ip6addrctl.c')
| -rw-r--r-- | usr.sbin/ip6addrctl/ip6addrctl.c | 467 |
1 files changed, 0 insertions, 467 deletions
diff --git a/usr.sbin/ip6addrctl/ip6addrctl.c b/usr.sbin/ip6addrctl/ip6addrctl.c deleted file mode 100644 index 532a096..0000000 --- a/usr.sbin/ip6addrctl/ip6addrctl.c +++ /dev/null @@ -1,467 +0,0 @@ -/* $KAME: ip6addrctl.c,v 1.3 2003/12/16 08:14:28 suz Exp $ */ - -/* - * Copyright (C) 2001 WIDE Project. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the project nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * $FreeBSD$ - */ - -#include <sys/types.h> -#include <sys/socket.h> -#include <sys/queue.h> -#include <sys/param.h> -#include <sys/ioctl.h> -#include <sys/sysctl.h> - -#include <net/if.h> -#include <net/if_var.h> - -#include <netinet/in.h> -#include <netinet6/in6_var.h> - -#include <stdlib.h> -#include <netdb.h> -#include <stdio.h> -#include <unistd.h> -#include <limits.h> -#include <string.h> -#include <err.h> - -static char *configfile; - -struct policyqueue { - TAILQ_ENTRY(policyqueue) pc_entry; - struct in6_addrpolicy pc_policy; -}; -TAILQ_HEAD(policyhead, policyqueue); -struct policyhead policyhead; - -static void usage(void); -static void get_policy(void); -static void dump_policy(void); -static int mask2plen(struct sockaddr_in6 *); -static int parse_prefix(const char *, struct in6_addrpolicy *); -static void make_policy_fromfile(char *); -static void plen2mask(struct sockaddr_in6 *, int); -static void set_policy(void); -static void add_policy(char *, char *, char *); -static void delete_policy(char *); -static void flush_policy(); - -int -main(argc, argv) - int argc; - char *argv[]; -{ - TAILQ_INIT(&policyhead); - - if (argc == 1 || strcasecmp(argv[1], "show") == 0) { - get_policy(); - dump_policy(); - } else if (strcasecmp(argv[1], "add") == 0) { - if (argc < 5) - usage(); - add_policy(argv[2], argv[3], argv[4]); - } else if (strcasecmp(argv[1], "delete") == 0) { - if (argc < 3) - usage(); - delete_policy(argv[2]); - } else if (strcasecmp(argv[1], "flush") == 0) { - get_policy(); - flush_policy(); - } else if (strcasecmp(argv[1], "install") == 0) { - if (argc < 3) - usage(); - configfile = argv[2]; - make_policy_fromfile(configfile); - set_policy(); - } else - usage(); - - exit(0); -} - -static void -get_policy() -{ - int mib[] = { CTL_NET, PF_INET6, IPPROTO_IPV6, IPV6CTL_ADDRCTLPOLICY }; - size_t l; - char *buf; - struct in6_addrpolicy *pol, *ep; - - if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &l, NULL, 0) < 0) { - err(1, "sysctl(IPV6CTL_ADDRCTLPOLICY)"); - /* NOTREACHED */ - } - if (l == 0) { - printf("no source-address-selection policy is installed\n"); - return; - } - if ((buf = malloc(l)) == NULL) { - errx(1, "malloc failed"); - /* NOTREACHED */ - } - if (sysctl(mib, sizeof(mib) / sizeof(mib[0]), buf, &l, NULL, 0) < 0) { - err(1, "sysctl(IPV6CTL_ADDRCTLPOLICY)"); - /* NOTREACHED */ - } - - ep = (struct in6_addrpolicy *)(buf + l); - for (pol = (struct in6_addrpolicy *)buf; pol + 1 <= ep; pol++) { - struct policyqueue *new; - - if ((new = malloc(sizeof(*new))) == NULL) - errx(1, "malloc failed\n"); - new->pc_policy = *pol; - TAILQ_INSERT_TAIL(&policyhead, new, pc_entry); - } - - free(buf); -} - -static void -dump_policy() -{ - size_t addrlen; - char addrbuf[NI_MAXHOST]; - struct in6_addrpolicy *pol; - struct policyqueue *ent; - int plen, first = 1; - - for (ent = TAILQ_FIRST(&policyhead); ent; - ent = TAILQ_NEXT(ent, pc_entry)) { - pol = &ent->pc_policy; - if (first) { - printf("%-30s %5s %5s %8s\n", - "Prefix", "Prec", "Label", "Use"); - first = 0; - } - - if ((getnameinfo((struct sockaddr *)&pol->addr, - sizeof(pol->addr), addrbuf, sizeof(addrbuf), - NULL, 0, NI_NUMERICHOST))) { - warnx("getnameinfo for prefix address failed"); - continue; - } - if ((plen = mask2plen(&pol->addrmask)) < 0) { - warnx("invalid address mask"); - continue; - } - addrlen = strlen(addrbuf); - if (addrlen + sizeof("/128") < sizeof(addrbuf)) { - snprintf(&addrbuf[addrlen], - sizeof(addrbuf) - addrlen - 1, - "/%d", plen); - printf("%-30s", addrbuf); - } else /* XXX */ - printf("%s/%d", addrbuf, plen); - printf(" %5d %5d %8llu\n", pol->preced, pol->label, - (unsigned long long)pol->use); - } -} - -#define SKIP_WHITE(p, emptyok) \ - do { \ - while((*(p) == ' ' || *(p) == '\t')) \ - (p)++; \ - if ((*(p) == '\0' || (*(p) == '\n')) && !(emptyok)) \ - goto bad; \ - } while (0); -#define SKIP_WORD(p) \ - do { \ - while(*(p) != ' ' && *(p) != '\t') \ - (p)++; \ - if (*(p) == '\0' || *(p) == '\n') \ - goto bad; \ - } while (0); - -static void -make_policy_fromfile(conf) - char *conf; -{ - char line[_POSIX2_LINE_MAX], *cp; - char *addrstr; - FILE *fp; - int count = 0; - struct in6_addrpolicy pol0; - struct policyqueue *new; - - if ((fp = fopen(conf, "r")) == NULL) - err(1, "fopen: %s", conf); - - while(fgets(line, sizeof(line), fp)) { - count++; - cp = line; - - memset(&pol0, 0, sizeof(pol0)); - - /* get prefix */ - SKIP_WHITE(cp, 1); - if (*cp == '\n') /* empty line */ - continue; - if (*cp == '#') - continue; - addrstr = cp; - if (parse_prefix((const char *)addrstr, &pol0)) - goto bad; - - /* get precedence value */ - SKIP_WORD(cp); - SKIP_WHITE(cp, 0); - pol0.preced = atoi(cp); - - /* get label */ - SKIP_WORD(cp); - SKIP_WHITE(cp, 0); - pol0.label = atoi(cp); - - /* parse succeeded. make a control buffer entry. */ - if ((new = malloc(sizeof(*new))) == NULL) - errx(1, "malloc failed\n"); - memset(new, 0, sizeof(*new)); - new->pc_policy = pol0; - TAILQ_INSERT_TAIL(&policyhead, new, pc_entry); - } - - fclose(fp); - return; - - bad: - errx(1, "parse failed at line %d", count); - /* NOTREACHED */ -} - -static int -parse_prefix(prefix0, pol) - const char *prefix0; - struct in6_addrpolicy *pol; -{ - int e = 0, plen; - char *prefix, *plenstr; - struct addrinfo hints, *res; - - if ((prefix = strdup(prefix0)) == NULL) - errx(1, "strdup failed"); - - if ((plenstr = strchr(prefix, '/')) == NULL) { - e = -1; - goto end; - } - *plenstr = '\0'; - - memset(&hints, 0, sizeof(hints)); - hints.ai_flags = AI_NUMERICHOST; - hints.ai_family = AF_INET6; - - if ((e = getaddrinfo(prefix, NULL, &hints, &res)) != 0) { - warnx("getaddrinfo failed for %s: %s", prefix, - gai_strerror(e)); - goto end; - } - memcpy(&pol->addr, res->ai_addr, res->ai_addrlen); - freeaddrinfo(res); - plen = atoi(plenstr + 1); - if (plen < 0 || plen > 128) { - warnx("invalid prefix length: %d", plen); - e = -1; - goto end; - } - plen2mask(&pol->addrmask, plen); - - end: - free(prefix); - return(e); -} - -static void -plen2mask(mask, plen) - struct sockaddr_in6 *mask; - int plen; -{ - u_char *cp = (char *)&mask->sin6_addr; - - memset(mask, 0, sizeof(*mask)); - mask->sin6_family = AF_INET6; /* just in case */ - mask->sin6_len = sizeof(*mask); - - for(; plen >= 8; plen -= 8) - *cp++ = 0xff; - if (plen > 0) - *cp = (0xff << (8 - plen)); -} - -static void -set_policy() -{ - struct policyqueue *ent; - int s; - - if ((s = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP)) < 0) - err(1, "socket(UDP)"); - - for (ent = TAILQ_FIRST(&policyhead); ent; - ent = TAILQ_NEXT(ent, pc_entry)) { - if (ioctl(s, SIOCAADDRCTL_POLICY, &ent->pc_policy)) - warn("ioctl(SIOCAADDRCTL_POLICY)"); - } - - close(s); -} - -static int -mask2plen(mask) - struct sockaddr_in6 *mask; -{ - int masklen, final = 0; - u_char *p, *lim; - - masklen = 0; - lim = (u_char *)(mask + 1); - for (p = (u_char *)(&mask->sin6_addr); p < lim; p++) { - if (final && *p) { - goto bad; - } - - switch (*p & 0xff) { - case 0xff: - masklen += 8; - break; - case 0xfe: - masklen += 7; - final++; - break; - case 0xfc: - masklen += 6; - final++; - break; - case 0xf8: - masklen += 5; - final++; - break; - case 0xf0: - masklen += 4; - final++; - break; - case 0xe0: - masklen += 3; - final++; - break; - case 0xc0: - masklen += 2; - final++; - break; - case 0x80: - masklen += 1; - final++; - break; - case 0x00: - final++; - break; - default: - goto bad; - break; - } - } - return(masklen); - - bad: - return(-1); -} - -static void -add_policy(prefix, prec, label) - char *prefix, *prec, *label; -{ - struct in6_addrpolicy p; - int s; - - memset(&p, 0, sizeof(p)); - - if (parse_prefix((const char *)prefix, &p)) - errx(1, "bad prefix: %s", prefix); - p.preced = atoi(prec); - p.label = atoi(label); - - if ((s = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP)) < 0) - err(1, "socket(UDP)"); - if (ioctl(s, SIOCAADDRCTL_POLICY, &p)) - err(1, "ioctl(SIOCAADDRCTL_POLICY)"); - - close(s); -} - -static void -delete_policy(prefix) - char *prefix; -{ - struct in6_addrpolicy p; - int s; - - memset(&p, 0, sizeof(p)); - - if (parse_prefix((const char *)prefix, &p)) - errx(1, "bad prefix: %s", prefix); - - if ((s = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP)) < 0) - err(1, "socket(UDP)"); - if (ioctl(s, SIOCDADDRCTL_POLICY, &p)) - err(1, "ioctl(SIOCDADDRCTL_POLICY)"); - - close(s); -} - -static void -flush_policy() -{ - struct policyqueue *ent; - int s; - - if ((s = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP)) < 0) - err(1, "socket(UDP)"); - - for (ent = TAILQ_FIRST(&policyhead); ent; - ent = TAILQ_NEXT(ent, pc_entry)) { - if (ioctl(s, SIOCDADDRCTL_POLICY, &ent->pc_policy)) - warn("ioctl(SIOCDADDRCTL_POLICY)"); - } - - close(s); -} - -static void -usage() -{ - fprintf(stderr, "usage: ip6addrctl [show]\n"); - fprintf(stderr, " ip6addrctl add " - "<prefix> <precedence> <label>\n"); - fprintf(stderr, " ip6addrctl delete <prefix>\n"); - fprintf(stderr, " ip6addrctl flush\n"); - fprintf(stderr, " ip6addrctl install <configfile>\n"); - - exit(1); -} |
