/*-
* Copyright (c) 2001 Brian Somers <brian@Awfulhak.org>
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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: src/usr.sbin/ppp/ncpaddr.c,v 1.16.26.1 2010/12/21 17:10:29 kensmith Exp $
*/
#include <sys/types.h>
#include <sys/socket.h>
#ifdef __OpenBSD__
#include <net/if_types.h>
#include <net/route.h>
#endif
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <arpa/inet.h>
#include <sys/un.h>
#include <netdb.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <termios.h>
#include "log.h"
#include "ncpaddr.h"
#include "timer.h"
#include "fsm.h"
#include "defs.h"
#include "slcompress.h"
#include "iplist.h"
#include "throughput.h"
#include "mbuf.h"
#include "ipcp.h"
#include "descriptor.h"
#include "layer.h"
#include "lqr.h"
#include "hdlc.h"
#include "lcp.h"
#include "ccp.h"
#include "link.h"
#include "mp.h"
#include "ipv6cp.h"
#include "ncp.h"
#define ncprange_ip4addr u.ip4.ipaddr
#define ncprange_ip4mask u.ip4.mask
#define ncprange_ip4width u.ip4.width
#define ncpaddr_ip4addr u.ip4addr
#ifndef NOINET6
#define ncprange_ip6addr u.ip6.ipaddr
#define ncprange_ip6width u.ip6.width
#define ncpaddr_ip6addr u.ip6addr
#endif
#define NCP_ASCIIBUFFERSIZE 52
static struct in_addr
bits2mask4(int bits)
{
struct in_addr result;
u_int32_t bit = 0x80000000;
result.s_addr = 0;
while (bits) {
result.s_addr |= bit;
bit >>= 1;
bits--;
}
result.s_addr = htonl(result.s_addr);
return result;
}
static int
mask42bits(struct in_addr mask)
{
u_int32_t msk = ntohl(mask.s_addr);
u_int32_t tst;
int ret;
for (ret = 32, tst = 1; tst; ret--, tst <<= 1)
if (msk & tst)
break;
for (tst <<= 1; tst; tst <<= 1)
if (!(msk & tst))
break;
return tst ? -1 : ret;
}
#ifndef NOINET6
static struct in6_addr
bits2mask6(int bits)
{
struct in6_addr result;
u_int32_t bit = 0x80;
u_char *c = result.s6_addr;
memset(&result, '\0', sizeof result);
while (bits) {
if (bit == 0) {
bit = 0x80;
c++;
}
*c |= bit;
bit >>= 1;
bits--;
}
return result;
}
static int
mask62bits(const struct in6_addr *mask)
{
const u_char masks[] = { 0x00, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe };
const u_char *c, *p, *end;
int masklen, m;
p = (const u_char *)mask;
for (masklen = 0, end = p + 16; p < end && *p == 0xff; p++)
masklen += 8;
if (p < end) {
for (c = masks, m = 0; c < masks + sizeof masks; c++, m++)
if (*c == *p) {
masklen += m;
break;
}
}
return masklen;
}
#if 0
static void
adjust_linklocal(struct sockaddr_in6 *sin6)
{
/* XXX: ?????!?!?!!!!! This is horrible ! */
/*
* The kernel does not understand sin6_scope_id for routing at this moment.
* We should rather keep the embedded ID.
* jinmei@kame.net, 20011026
*/
if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) ||
IN6_IS_ADDR_MC_LINKLOCAL(&sin6->sin6_addr)) {
sin6->sin6_scope_id =
ntohs(*(u_short *)&sin6->sin6_addr.s6_addr[2]);
*(u_short *)&sin6->sin6_addr.s6_addr[2] = 0;
}
}
#endif
#endif
void
ncpaddr_init(struct ncpaddr *addr)
{
addr->ncpaddr_family = AF_UNSPEC;
}
int
ncpaddr_isset(const struct ncpaddr *addr)
{
return addr->ncpaddr_family != AF_UNSPEC;
}
int
ncpaddr_isdefault(const struct ncpaddr *addr)
{
switch (addr->ncpaddr_family) {
case AF_INET:
if (addr->ncpaddr_ip4addr.s_addr == INADDR_ANY)
return 1;
break;
#ifndef NOINET6
case AF_INET6:
if (IN6_IS_ADDR_UNSPECIFIED(&addr->ncpaddr_ip6addr))
return 1;
break;
#endif
}
return 0;
}
int
ncpaddr_equal(const struct ncpaddr *addr, const struct ncpaddr *cmp)
{
if (addr->ncpaddr_family != cmp->ncpaddr_family)
return 0;
switch (addr->ncpaddr_family) {
case AF_INET:
return addr->ncpaddr_ip4addr.s_addr == cmp->ncpaddr_ip4addr.s_addr;
#ifndef NOINET6
case AF_INET6:
return !memcmp(&addr->ncpaddr_ip6addr, &cmp->ncpaddr_ip6addr,
sizeof addr->ncpaddr_ip6addr);
#endif
case AF_UNSPEC:
return 1;
}
return 0;
}
void
ncpaddr_copy(struct ncpaddr *addr, const struct ncpaddr *from)
{
switch (from->ncpaddr_family) {
case AF_INET:
addr->ncpaddr_family = AF_INET;
addr->ncpaddr_ip4addr = from->ncpaddr_ip4addr;
break;
#ifndef NOINET6
case AF_INET6:
addr->ncpaddr_family = AF_INET6;
addr->ncpaddr_ip6addr = from->ncpaddr_ip6addr;
break;
#endif
default:
addr->ncpaddr_family = AF_UNSPEC;
}
}
void
ncpaddr_setip4addr(struct ncpaddr *addr, u_int32_t ip)
{
addr->ncpaddr_family = AF_INET;
addr->ncpaddr_ip4addr.s_addr = ip;
}
int
ncpaddr_getip4addr(const struct ncpaddr *addr, u_int32_t *ip)
{
if (addr->ncpaddr_family != AF_INET)
return 0;
*ip = addr->ncpaddr_ip4addr.s_addr;
return 1;
}
void
ncpaddr_setip4(struct ncpaddr *addr, struct in_addr ip)
{
addr->ncpaddr_family = AF_INET;
addr->ncpaddr_ip4addr = ip;
}
int
ncpaddr_getip4(const struct ncpaddr *addr, struct in_addr *ip)
{
if (addr->ncpaddr_family != AF_INET)
return 0;
*ip = addr->ncpaddr_ip4addr;
return 1;
}
#ifndef NOINET6
void
ncpaddr_setip6(struct ncpaddr *addr, const struct in6_addr *ip6)
{
addr->ncpaddr_family = AF_INET6;
addr->ncpaddr_ip6addr = *ip6;
}
int
ncpaddr_getip6(const struct ncpaddr *addr, struct in6_addr *ip6)
{
if (addr->ncpaddr_family != AF_INET6)
return 0;
*ip6 = addr->ncpaddr_ip6addr;
return 1;
}
#endif
void
ncpaddr_getsa(const struct ncpaddr *addr, struct sockaddr_storage *host)
{
struct sockaddr_in *host4 = (struct sockaddr_in *)host;
#ifndef NOINET6
struct sockaddr_in6 *host6 = (struct sockaddr_in6 *)host;
#endif
memset(host, '\0', sizeof(*host));
switch (addr->ncpaddr_family) {
case AF_INET:
host4->sin_family = AF_INET;
host4->sin_len = sizeof(*host4);
host4->sin_addr = addr->ncpaddr_ip4addr;
break;
#ifndef NOINET6
case AF_INET6:
host6->sin6_family = AF_INET6;
host6->sin6_len = sizeof(*host6);
host6->sin6_addr = addr->ncpaddr_ip6addr;
break;
#endif
default:
host->ss_family = AF_UNSPEC;
break;
}
}
void
ncpaddr_setsa(struct ncpaddr *addr, const struct sockaddr *host)
{
const struct sockaddr_in *host4 = (const struct sockaddr_in *)host;
#ifndef NOINET6
const struct sockaddr_in6 *host6 = (const struct sockaddr_in6 *)host;
#endif
switch (host->sa_family) {
case AF_INET:
addr->ncpaddr_family = AF_INET;
addr->ncpaddr_ip4addr = host4->sin_addr;
break;
#ifndef NOINET6
case AF_INET6:
if (IN6_IS_ADDR_V4MAPPED(&host6->sin6_addr)) {
addr->ncpaddr_family = AF_INET;
addr->ncpaddr_ip4addr.s_addr =
*(const u_int32_t *)(host6->sin6_addr.s6_addr + 12);
} else {
addr->ncpaddr_family = AF_INET6;
addr->ncpaddr_ip6addr = host6->sin6_addr;
}
break;
#endif
default:
addr->ncpaddr_family = AF_UNSPEC;
}
}
static char *
ncpaddr_ntowa(const struct ncpaddr *addr)
{
static char res[NCP_ASCIIBUFFERSIZE];
#ifndef NOINET6
struct sockaddr_in6 sin6;
#endif
switch (addr->ncpaddr_family) {
case AF_INET:
snprintf(res, sizeof res, "%s", inet_ntoa(addr->ncpaddr_ip4addr));
return res;
#ifndef NOINET6
case AF_INET6:
memset(&sin6, '\0', sizeof(sin6));
sin6.sin6_len = sizeof(sin6);
sin6.sin6_family = AF_INET6;
sin6.sin6_addr = addr->ncpaddr_ip6addr;
#if 0
adjust_linklocal(&sin6);
#endif
if (getnameinfo((struct sockaddr *)&sin6, sizeof sin6, res, sizeof(res),
NULL, 0, NI_NUMERICHOST) != 0)
break;
return res;
#endif
}
snprintf(res, sizeof res, "<AF_UNSPEC>");
return res;
}
const char *
ncpaddr_ntoa(const struct ncpaddr *addr)
{
return ncpaddr_ntowa(addr);
}
int
ncpaddr_aton(struct ncpaddr *addr, struct ncp *ncp, const char *data)
{
struct ncprange range;
if (!ncprange_aton(&range, ncp, data))
return 0;
if (range.ncprange_family == AF_INET && range.ncprange_ip4width != 32 &&
range.ncprange_ip4addr.s_addr != INADDR_ANY) {
log_Printf(LogWARN, "ncpaddr_aton: %s: Only 32 bits allowed\n", data);
return 0;
}
#ifndef NOINET6
if (range.ncprange_family == AF_INET6 && range.ncprange_ip6width != 128 &&
!IN6_IS_ADDR_UNSPECIFIED(&range.ncprange_ip6addr)) {
log_Printf(LogWARN, "ncpaddr_aton: %s: Only 128 bits allowed\n", data);
return 0;
}
#endif
switch (range.ncprange_family) {
case AF_INET:
addr->ncpaddr_family = range.ncprange_family;
addr->ncpaddr_ip4addr = range.ncprange_ip4addr;
return 1;
#ifndef NOINET6
case AF_INET6:
addr->ncpaddr_family = range.ncprange_family;
addr->ncpaddr_ip6addr = range.ncprange_ip6addr;
return 1;
#endif
}
return 0;
}
void
ncprange_init(struct ncprange *range)
{
range->ncprange_family = AF_UNSPEC;
}
int
ncprange_isset(const struct ncprange *range)
{
return range->ncprange_family != AF_UNSPEC;
}
int
ncprange_equal(const struct ncprange *range, const struct ncprange *cmp)
{
if (range->ncprange_family != cmp->ncprange_family)
return 0;
switch (range->ncprange_family) {
case AF_INET:
if (range->ncprange_ip4addr.s_addr != cmp->ncprange_ip4addr.s_addr)
return 0;
return range->ncprange_ip4mask.s_addr == cmp->ncprange_ip4mask.s_addr;
#ifndef NOINET6
case AF_INET6:
if (range->ncprange_ip6width != cmp->ncprange_ip6width)
return 0;
return !memcmp(&range->ncprange_ip6addr, &cmp->ncprange_ip6addr,
sizeof range->ncprange_ip6addr);
#endif
case AF_UNSPEC:
return 1;
}
return 0;
}
int
ncprange_isdefault(const struct ncprange *range)
{
switch (range->ncprange_family) {
case AF_INET:
if (range->ncprange_ip4addr.s_addr == INADDR_ANY)
return 1;
break;
#ifndef NOINET6
case AF_INET6:
if (range->ncprange_ip6width == 0 &&
IN6_IS_ADDR_UNSPECIFIED(&range->ncprange_ip6addr))
return 1;
break;
#endif
}
return 0;
}
void
ncprange_setdefault(struct ncprange *range, int af)
{
memset(range, '\0', sizeof *range);
range->ncprange_family = af;
}
int
ncprange_contains(const struct ncprange *range, const struct ncpaddr *addr)
{
#ifndef NOINET6
const u_char masks[] = { 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe, 0xff };
const u_char *addrp, *rangep;
int bits;
#endif
if (range->ncprange_family != addr->ncpaddr_family)
return 0;
switch (range->ncprange_family) {
case AF_INET:
return !((addr->ncpaddr_ip4addr.s_addr ^ range->ncprange_ip4addr.s_addr) &
range->ncprange_ip4mask.s_addr);
#ifndef NOINET6
case AF_INET6:
rangep = (const u_char *)range->ncprange_ip6addr.s6_addr;
addrp = (const u_char *)addr->ncpaddr_ip6addr.s6_addr;
for (bits = range->ncprange_ip6width; bits > 0; bits -= 8)
if ((*addrp++ ^ *rangep++) & masks[bits > 7 ? 7 : bits - 1])
return 0;
return 1;
#endif
}
return 0;
}
int
ncprange_containsip4(const struct ncprange *range, struct in_addr addr)
{
switch (range->ncprange_family) {
case AF_INET:
return !((addr.s_addr ^ range->ncprange_ip4addr.s_addr) &
range->ncprange_ip4mask.s_addr);
}
return 0;
}
void
ncprange_copy(struct ncprange *range, const struct ncprange *from)
{
switch (from->ncprange_family) {
case AF_INET:
range->ncprange_family = AF_INET;
range->ncprange_ip4addr = from->ncprange_ip4addr;
range->ncprange_ip4mask = from->ncprange_ip4mask;
range->ncprange_ip4width = from->ncprange_ip4width;
break;
#ifndef NOINET6
case AF_INET6:
range->ncprange_family = AF_INET6;
range->ncprange_ip6addr = from->ncprange_ip6addr;
range->ncprange_ip6width = from->ncprange_ip6width;
break;
#endif
default:
range->ncprange_family = AF_UNSPEC;
}
}
void
ncprange_set(struct ncprange *range, const struct ncpaddr *addr, int width)
{
ncprange_sethost(range, addr);
ncprange_setwidth(range, width);
}
void
ncprange_sethost(struct ncprange *range, const struct ncpaddr *from)
{
switch (from->ncpaddr_family) {
case AF_INET:
range->ncprange_family = AF_INET;
range->ncprange_ip4addr = from->ncpaddr_ip4addr;
if (from->ncpaddr_ip4addr.s_addr == INADDR_ANY) {
range->ncprange_ip4mask.s_addr = INADDR_ANY;
range->ncprange_ip4width = 0;
} else {
range->ncprange_ip4mask.s_addr = INADDR_BROADCAST;
range->ncprange_ip4width = 32;
}
break;
#ifndef NOINET6
case AF_INET6:
range->ncprange_family = AF_INET6;
range->ncprange_ip6addr = from->ncpaddr_ip6addr;
range->ncprange_ip6width = 128;
break;
#endif
default:
range->ncprange_family = AF_UNSPEC;
}
}
int
ncprange_ishost(const struct ncprange *range)
{
switch (range->ncprange_family) {
case AF_INET:
return range->ncprange_ip4width == 32;
#ifndef NOINET6
case AF_INET6:
return range->ncprange_ip6width == 128;
#endif
}
return (0);
}
int
ncprange_setwidth(struct ncprange *range, int width)
{
switch (range->ncprange_family) {
case AF_INET:
if (width < 0 || width > 32)
break;
range->ncprange_ip4width = width;
range->ncprange_ip4mask = bits2mask4(width);
break;
#ifndef NOINET6
case AF_INET6:
if (width < 0 || width > 128)
break;
range->ncprange_ip6width = width;
break;
#endif
case AF_UNSPEC:
return 1;
}
return 0;
}
void
ncprange_setip4host(struct ncprange *range, struct in_addr from)
{
range->ncprange_family = AF_INET;
range->ncprange_ip4addr = from;
if (from.s_addr == INADDR_ANY) {
range->ncprange_ip4mask.s_addr = INADDR_ANY;
range->ncprange_ip4width = 0;
} else {
range->ncprange_ip4mask.s_addr = INADDR_BROADCAST;
range->ncprange_ip4width = 32;
}
}
void
ncprange_setip4(struct ncprange *range, struct in_addr from, struct in_addr msk)
{
range->ncprange_family = AF_INET;
range->ncprange_ip4addr = from;
range->ncprange_ip4mask = msk;
range->ncprange_ip4width = mask42bits(msk);
}
int
ncprange_setip4mask(struct ncprange *range, struct in_addr mask)
{
if (range->ncprange_family != AF_INET)
return 0;
range->ncprange_ip4mask = mask;
range->ncprange_ip4width = mask42bits(mask);
return 1;
}
void
ncprange_setsa(struct ncprange *range, const struct sockaddr *host,
const struct sockaddr *mask)
{
const struct sockaddr_in *host4 = (const struct sockaddr_in *)host;
const struct sockaddr_in *mask4 = (const struct sockaddr_in *)mask;
#ifndef NOINET6
const struct sockaddr_in6 *host6 = (const struct sockaddr_in6 *)host;
const struct sockaddr_in6 *mask6 = (const struct sockaddr_in6 *)mask;
#endif
switch (host->sa_family) {
case AF_INET:
range->ncprange_family = AF_INET;
range->ncprange_ip4addr = host4->sin_addr;
if (host4->sin_addr.s_addr == INADDR_ANY) {
range->ncprange_ip4mask.s_addr = INADDR_ANY;
range->ncprange_ip4width = 0;
} else if (mask4 && mask4->sin_family == AF_INET) {
range->ncprange_ip4mask.s_addr = mask4->sin_addr.s_addr;
range->ncprange_ip4width = mask42bits(mask4->sin_addr);
} else {
range->ncprange_ip4mask.s_addr = INADDR_BROADCAST;
range->ncprange_ip4width = 32;
}
break;
#ifndef NOINET6
case AF_INET6:
range->ncprange_family = AF_INET6;
range->ncprange_ip6addr = host6->sin6_addr;
if (IN6_IS_ADDR_UNSPECIFIED(&host6->sin6_addr))
range->ncprange_ip6width = 0;
else
range->ncprange_ip6width = mask6 ? mask62bits(&mask6->sin6_addr) : 128;
break;
#endif
default:
range->ncprange_family = AF_UNSPEC;
}
}
void
ncprange_getsa(const struct ncprange *range, struct sockaddr_storage *host,
struct sockaddr_storage *mask)
{
struct sockaddr_in *host4 = (struct sockaddr_in *)host;
struct sockaddr_in *mask4 = (struct sockaddr_in *)mask;
#ifndef NOINET6
struct sockaddr_in6 *host6 = (struct sockaddr_in6 *)host;
struct sockaddr_in6 *mask6 = (struct sockaddr_in6 *)mask;
#endif
memset(host, '\0', sizeof(*host));
if (mask)
memset(mask, '\0', sizeof(*mask));
switch (range->ncprange_family) {
case AF_INET:
host4->sin_family = AF_INET;
host4->sin_len = sizeof(*host4);
host4->sin_addr = range->ncprange_ip4addr;
if (mask4) {
mask4->sin_family = AF_INET;
mask4->sin_len = sizeof(*host4);
mask4->sin_addr = range->ncprange_ip4mask;
}
break;
#ifndef NOINET6
case AF_INET6:
host6->sin6_family = AF_INET6;
host6->sin6_len = sizeof(*host6);
host6->sin6_addr = range->ncprange_ip6addr;
if (mask6) {
mask6->sin6_family = AF_INET6;
mask6->sin6_len = sizeof(*host6);
mask6->sin6_addr = bits2mask6(range->ncprange_ip6width);
}
break;
#endif
default:
host->ss_family = AF_UNSPEC;
if (mask)
mask->ss_family = AF_UNSPEC;
break;
}
}
int
ncprange_getaddr(const struct ncprange *range, struct ncpaddr *addr)
{
switch (range->ncprange_family) {
case AF_INET:
addr->ncpaddr_family = AF_INET;
addr->ncpaddr_ip4addr = range->ncprange_ip4addr;
return 1;
#ifndef NOINET6
case AF_INET6:
addr->ncpaddr_family = AF_INET6;
addr->ncpaddr_ip6addr = range->ncprange_ip6addr;
return 1;
#endif
}
return 0;
}
int
ncprange_getip4addr(const struct ncprange *range, struct in_addr *addr)
{
if (range->ncprange_family != AF_INET)
return 0;
*addr = range->ncprange_ip4addr;
return 1;
}
int
ncprange_getip4mask(const struct ncprange *range, struct in_addr *mask)
{
switch (range->ncprange_family) {
case AF_INET:
*mask = range->ncprange_ip4mask;
return 1;
}
return 0;
}
int
ncprange_getwidth(const struct ncprange *range, int *width)
{
switch (range->ncprange_family) {
case AF_INET:
*width = range->ncprange_ip4width;
return 1;
#ifndef NOINET6
case AF_INET6:
*width = range->ncprange_ip6width;
return 1;
#endif
}
return 0;
}
const char *
ncprange_ntoa(const struct ncprange *range)
{
char *res;
struct ncpaddr addr;
int len;
if (!ncprange_getaddr(range, &addr))
return "<AF_UNSPEC>";
res = ncpaddr_ntowa(&addr);
len = strlen(res);
if (len >= NCP_ASCIIBUFFERSIZE - 1)
return res;
switch (range->ncprange_family) {
case AF_INET:
if (range->ncprange_ip4width == -1) {
/* A non-contiguous mask */
for (; len >= 3; res[len -= 2] = '\0')
if (strcmp(res + len - 2, ".0"))
break;
snprintf(res + len, sizeof res - len, "&0x%08lx",
(unsigned long)ntohl(range->ncprange_ip4mask.s_addr));
} else if (range->ncprange_ip4width < 32)
snprintf(res + len, sizeof res - len, "/%d", range->ncprange_ip4width);
return res;
#ifndef NOINET6
case AF_INET6:
if (range->ncprange_ip6width != 128)
snprintf(res + len, sizeof res - len, "/%d", range->ncprange_ip6width);
return res;
#endif
}
return "<AF_UNSPEC>";
}
#ifndef NOINET6
int
ncprange_scopeid(const struct ncprange *range)
{
const struct in6_addr *sin6;
int scopeid = -1;
if (range->ncprange_family == AF_INET6) {
sin6 = &range->ncprange_ip6addr;
if (IN6_IS_ADDR_LINKLOCAL(sin6) || IN6_IS_ADDR_MC_LINKLOCAL(sin6))
if ((scopeid = ntohs(*(const u_short *)&sin6->s6_addr[2])) == 0)
scopeid = -1;
}
return scopeid;
}
#endif
int
ncprange_aton(struct ncprange *range, struct ncp *ncp, const char *data)
{
int bits, len;
char *wp;
const char *cp;
char *s;
len = strcspn(data, "/");
if (ncp && strncasecmp(data, "HISADDR", len) == 0) {
range->ncprange_family = AF_INET;
range->ncprange_ip4addr = ncp->ipcp.peer_ip;
range->ncprange_ip4mask.s_addr = INADDR_BROADCAST;
range->ncprange_ip4width = 32;
return 1;
#ifndef NOINET6
} else if (ncp && strncasecmp(data, "HISADDR6", len) == 0) {
range->ncprange_family = AF_INET6;
range->ncprange_ip6addr = ncp->ipv6cp.hisaddr.ncpaddr_ip6addr;
range->ncprange_ip6width = 128;
return 1;
#endif
} else if (ncp && strncasecmp(data, "MYADDR", len) == 0) {
range->ncprange_family = AF_INET;
range->ncprange_ip4addr = ncp->ipcp.my_ip;
range->ncprange_ip4mask.s_addr = INADDR_BROADCAST;
range->ncprange_ip4width = 32;
return 1;
#ifndef NOINET6
} else if (ncp && strncasecmp(data, "MYADDR6", len) == 0) {
range->ncprange_family = AF_INET6;
range->ncprange_ip6addr = ncp->ipv6cp.myaddr.ncpaddr_ip6addr;
range->ncprange_ip6width = 128;
return 1;
#endif
} else if (ncp && strncasecmp(data, "DNS0", len) == 0) {
range->ncprange_family = AF_INET;
range->ncprange_ip4addr = ncp->ipcp.ns.dns[0];
range->ncprange_ip4mask.s_addr = INADDR_BROADCAST;
range->ncprange_ip4width = 32;
return 1;
} else if (ncp && strncasecmp(data, "DNS1", len) == 0) {
range->ncprange_family = AF_INET;
range->ncprange_ip4addr = ncp->ipcp.ns.dns[1];
range->ncprange_ip4mask.s_addr = INADDR_BROADCAST;
range->ncprange_ip4width = 32;
return 1;
}
s = (char *)alloca(len + 1);
strncpy(s, data, len);
s[len] = '\0';
bits = -1;
if (data[len] != '\0') {
bits = strtol(data + len + 1, &wp, 0);
if (*wp || wp == data + len + 1 || bits < 0 || bits > 128) {
log_Printf(LogWARN, "ncprange_aton: bad mask width.\n");
return 0;
}
}
if ((cp = strchr(data, ':')) == NULL) {
range->ncprange_family = AF_INET;
range->ncprange_ip4addr = GetIpAddr(s);
if (range->ncprange_ip4addr.s_addr == INADDR_NONE) {
log_Printf(LogWARN, "ncprange_aton: %s: Bad address\n", s);
return 0;
}
if (range->ncprange_ip4addr.s_addr == INADDR_ANY) {
range->ncprange_ip4mask.s_addr = INADDR_ANY;
range->ncprange_ip4width = 0;
} else if (bits == -1) {
range->ncprange_ip4mask.s_addr = INADDR_BROADCAST;
range->ncprange_ip4width = 32;
} else if (bits > 32) {
log_Printf(LogWARN, "ncprange_aton: bad mask width.\n");
return 0;
} else {
range->ncprange_ip4mask = bits2mask4(bits);
range->ncprange_ip4width = bits;
}
return 1;
#ifndef NOINET6
} else if (strchr(cp + 1, ':') != NULL) {
range->ncprange_family = AF_INET6;
if (inet_pton(AF_INET6, s, &range->ncprange_ip6addr) != 1) {
log_Printf(LogWARN, "ncprange_aton: %s: Bad address\n", s);
return 0;
}
if (IN6_IS_ADDR_UNSPECIFIED(&range->ncprange_ip6addr))
range->ncprange_ip6width = 0;
else
range->ncprange_ip6width = (bits == -1) ? 128 : bits;
return 1;
#endif
}
return 0;
}