9a47cfedaa
error) on amd64 when doing pointer subtraction. This bug is already fixed in gcc-3.3 (waiting for after the branch), and the hack will be backed out at the first opportunity. This is in the ipv6 code path. Approved by: re (scottl)
1012 lines
23 KiB
C
1012 lines
23 KiB
C
/*-
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* Copyright (c) 2001 Brian Somers <brian@Awfulhak.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/types.h>
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#include <sys/socket.h>
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#ifdef __OpenBSD__
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#include <net/if_types.h>
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#include <net/route.h>
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#endif
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <arpa/inet.h>
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#include <sys/un.h>
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#include <netdb.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <termios.h>
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#include "log.h"
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#include "ncpaddr.h"
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#include "timer.h"
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#include "fsm.h"
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#include "defs.h"
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#include "slcompress.h"
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#include "iplist.h"
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#include "throughput.h"
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#include "mbuf.h"
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#include "ipcp.h"
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#include "descriptor.h"
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#include "layer.h"
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#include "lqr.h"
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#include "hdlc.h"
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#include "lcp.h"
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#include "ccp.h"
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#include "link.h"
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#include "mp.h"
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#include "ipv6cp.h"
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#include "ncp.h"
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#define ncprange_ip4addr u.ip4.ipaddr
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#define ncprange_ip4mask u.ip4.mask
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#define ncprange_ip4width u.ip4.width
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#define ncpaddr_ip4addr u.ip4addr
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#ifndef NOINET6
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#define ncprange_ip6addr u.ip6.ipaddr
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#define ncprange_ip6width u.ip6.width
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#define ncpaddr_ip6addr u.ip6addr
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#endif
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#define NCP_ASCIIBUFFERSIZE 52
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static struct in_addr
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bits2mask4(int bits)
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{
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struct in_addr result;
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u_int32_t bit = 0x80000000;
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result.s_addr = 0;
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while (bits) {
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result.s_addr |= bit;
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bit >>= 1;
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bits--;
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}
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result.s_addr = htonl(result.s_addr);
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return result;
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}
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static int
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mask42bits(struct in_addr mask)
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{
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u_int32_t msk = ntohl(mask.s_addr);
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u_int32_t tst;
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int ret;
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for (ret = 32, tst = 1; tst; ret--, tst <<= 1)
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if (msk & tst)
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break;
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for (tst <<= 1; tst; tst <<= 1)
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if (!(msk & tst))
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break;
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return tst ? -1 : ret;
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}
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#ifndef NOINET6
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static struct in6_addr
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bits2mask6(int bits)
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{
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struct in6_addr result;
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u_int32_t bit = 0x80;
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u_char *c = result.s6_addr;
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memset(&result, '\0', sizeof result);
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while (bits) {
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if (bit == 0) {
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bit = 0x80;
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c++;
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}
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*c |= bit;
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bit >>= 1;
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bits--;
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}
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return result;
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}
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static int
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mask62bits(const struct in6_addr *mask)
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{
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const u_char masks[] = { 0x00, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe };
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const u_char *c, *p, *end;
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int masklen, m;
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p = (const u_char *)mask;
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for (masklen = 0, end = p + 16; p < end && *p == 0xff; p++)
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masklen += 8;
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if (p < end) {
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for (c = masks, m = 0; c < masks + sizeof masks; c++, m++)
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if (*c == *p) {
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masklen += m;
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break;
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}
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}
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return masklen;
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}
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static void
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adjust_linklocal(struct sockaddr_in6 *sin6)
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{
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/* XXX: ?????!?!?!!!!! This is horrible ! */
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#if 0
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/*
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* The kernel does not understand sin6_scope_id for routing at this moment.
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* We should rather keep the embedded ID.
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* jinmei@kame.net, 20011026
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*/
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if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) ||
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IN6_IS_ADDR_MC_LINKLOCAL(&sin6->sin6_addr)) {
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sin6->sin6_scope_id =
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ntohs(*(u_short *)&sin6->sin6_addr.s6_addr[2]);
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*(u_short *)&sin6->sin6_addr.s6_addr[2] = 0;
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}
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#endif
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}
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#endif
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void
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ncpaddr_init(struct ncpaddr *addr)
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{
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addr->ncpaddr_family = AF_UNSPEC;
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}
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int
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ncpaddr_isset(const struct ncpaddr *addr)
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{
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return addr->ncpaddr_family != AF_UNSPEC;
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}
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int
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ncpaddr_isdefault(const struct ncpaddr *addr)
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{
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switch (addr->ncpaddr_family) {
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case AF_INET:
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if (addr->ncpaddr_ip4addr.s_addr == INADDR_ANY)
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return 1;
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break;
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#ifndef NOINET6
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case AF_INET6:
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if (IN6_IS_ADDR_UNSPECIFIED(&addr->ncpaddr_ip6addr))
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return 1;
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break;
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#endif
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}
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return 0;
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}
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int
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ncpaddr_equal(const struct ncpaddr *addr, const struct ncpaddr *cmp)
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{
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if (addr->ncpaddr_family != cmp->ncpaddr_family)
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return 0;
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switch (addr->ncpaddr_family) {
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case AF_INET:
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return addr->ncpaddr_ip4addr.s_addr == cmp->ncpaddr_ip4addr.s_addr;
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#ifndef NOINET6
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case AF_INET6:
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return !memcmp(&addr->ncpaddr_ip6addr, &cmp->ncpaddr_ip6addr,
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sizeof addr->ncpaddr_ip6addr);
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#endif
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case AF_UNSPEC:
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return 1;
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}
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return 0;
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}
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void
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ncpaddr_copy(struct ncpaddr *addr, const struct ncpaddr *from)
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{
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switch (from->ncpaddr_family) {
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case AF_INET:
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addr->ncpaddr_family = AF_INET;
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addr->ncpaddr_ip4addr = from->ncpaddr_ip4addr;
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break;
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#ifndef NOINET6
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case AF_INET6:
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addr->ncpaddr_family = AF_INET6;
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addr->ncpaddr_ip6addr = from->ncpaddr_ip6addr;
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break;
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#endif
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default:
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addr->ncpaddr_family = AF_UNSPEC;
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}
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}
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void
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ncpaddr_setip4addr(struct ncpaddr *addr, u_int32_t ip)
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{
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addr->ncpaddr_family = AF_INET;
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addr->ncpaddr_ip4addr.s_addr = ip;
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}
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int
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ncpaddr_getip4addr(const struct ncpaddr *addr, u_int32_t *ip)
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{
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if (addr->ncpaddr_family != AF_INET)
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return 0;
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*ip = addr->ncpaddr_ip4addr.s_addr;
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return 1;
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}
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void
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ncpaddr_setip4(struct ncpaddr *addr, struct in_addr ip)
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{
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addr->ncpaddr_family = AF_INET;
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addr->ncpaddr_ip4addr = ip;
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}
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int
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ncpaddr_getip4(const struct ncpaddr *addr, struct in_addr *ip)
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{
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if (addr->ncpaddr_family != AF_INET)
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return 0;
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*ip = addr->ncpaddr_ip4addr;
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return 1;
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}
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#ifndef NOINET6
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void
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ncpaddr_setip6(struct ncpaddr *addr, const struct in6_addr *ip6)
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{
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addr->ncpaddr_family = AF_INET6;
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addr->ncpaddr_ip6addr = *ip6;
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}
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int
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ncpaddr_getip6(const struct ncpaddr *addr, struct in6_addr *ip6)
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{
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if (addr->ncpaddr_family != AF_INET6)
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return 0;
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*ip6 = addr->ncpaddr_ip6addr;
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return 1;
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}
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#endif
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void
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ncpaddr_getsa(const struct ncpaddr *addr, struct sockaddr_storage *host)
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{
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struct sockaddr_in *host4 = (struct sockaddr_in *)host;
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#ifndef NOINET6
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struct sockaddr_in6 *host6 = (struct sockaddr_in6 *)host;
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#endif
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memset(host, '\0', sizeof(*host));
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switch (addr->ncpaddr_family) {
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case AF_INET:
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host4->sin_family = AF_INET;
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host4->sin_len = sizeof(*host4);
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host4->sin_addr = addr->ncpaddr_ip4addr;
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break;
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#ifndef NOINET6
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case AF_INET6:
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host6->sin6_family = AF_INET6;
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host6->sin6_len = sizeof(*host6);
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host6->sin6_addr = addr->ncpaddr_ip6addr;
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break;
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#endif
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default:
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host->ss_family = AF_UNSPEC;
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break;
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}
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}
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void
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ncpaddr_setsa(struct ncpaddr *addr, const struct sockaddr *host)
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{
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const struct sockaddr_in *host4 = (const struct sockaddr_in *)host;
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#ifndef NOINET6
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const struct sockaddr_in6 *host6 = (const struct sockaddr_in6 *)host;
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#endif
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switch (host->sa_family) {
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case AF_INET:
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addr->ncpaddr_family = AF_INET;
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addr->ncpaddr_ip4addr = host4->sin_addr;
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break;
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#ifndef NOINET6
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case AF_INET6:
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if (IN6_IS_ADDR_V4MAPPED(&host6->sin6_addr)) {
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addr->ncpaddr_family = AF_INET;
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addr->ncpaddr_ip4addr.s_addr =
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*(const u_int32_t *)(host6->sin6_addr.s6_addr + 12);
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} else {
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addr->ncpaddr_family = AF_INET6;
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addr->ncpaddr_ip6addr = host6->sin6_addr;
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}
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break;
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#endif
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default:
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addr->ncpaddr_family = AF_UNSPEC;
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}
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}
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static char *
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ncpaddr_ntowa(const struct ncpaddr *addr)
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{
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static char res[NCP_ASCIIBUFFERSIZE];
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#ifndef NOINET6
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struct sockaddr_in6 sin6;
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#endif
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|
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switch (addr->ncpaddr_family) {
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case AF_INET:
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snprintf(res, sizeof res, "%s", inet_ntoa(addr->ncpaddr_ip4addr));
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return res;
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#ifndef NOINET6
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case AF_INET6:
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memset(&sin6, '\0', sizeof(sin6));
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sin6.sin6_len = sizeof(sin6);
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sin6.sin6_family = AF_INET6;
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sin6.sin6_addr = addr->ncpaddr_ip6addr;
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adjust_linklocal(&sin6);
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#ifdef NI_WITHSCOPEID
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if (getnameinfo((struct sockaddr *)&sin6, sizeof sin6, res, sizeof(res),
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NULL, 0, NI_WITHSCOPEID | NI_NUMERICHOST) != 0)
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#else
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if (getnameinfo((struct sockaddr *)&sin6, sizeof sin6, res, sizeof(res),
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NULL, 0, NI_NUMERICHOST) != 0)
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#endif
|
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break;
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|
|
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return res;
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#endif
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}
|
|
|
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snprintf(res, sizeof res, "<AF_UNSPEC>");
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return res;
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|
}
|
|
|
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const char *
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ncpaddr_ntoa(const struct ncpaddr *addr)
|
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{
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return ncpaddr_ntowa(addr);
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}
|
|
|
|
|
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int
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ncpaddr_aton(struct ncpaddr *addr, struct ncp *ncp, const char *data)
|
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{
|
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struct ncprange range;
|
|
|
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if (!ncprange_aton(&range, ncp, data))
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return 0;
|
|
|
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if (range.ncprange_family == AF_INET && range.ncprange_ip4width != 32) {
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log_Printf(LogWARN, "ncpaddr_aton: %s: Only 32 bits allowed\n", data);
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return 0;
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}
|
|
|
|
#ifndef NOINET6
|
|
if (range.ncprange_family == AF_INET6 && range.ncprange_ip6width != 128) {
|
|
log_Printf(LogWARN, "ncpaddr_aton: %s: Only 128 bits allowed\n", data);
|
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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;
|
|
}
|