ncpaddr.c revision 134789
1126261Smlaier/*- 2132303Smlaier * Copyright (c) 2001 Brian Somers <brian@Awfulhak.org> 3126258Smlaier * All rights reserved. 4126258Smlaier * 5126258Smlaier * Redistribution and use in source and binary forms, with or without 6130613Smlaier * modification, are permitted provided that the following conditions 7126258Smlaier * are met: 8126258Smlaier * 1. Redistributions of source code must retain the above copyright 9126258Smlaier * notice, this list of conditions and the following disclaimer. 10126258Smlaier * 2. Redistributions in binary form must reproduce the above copyright 11126258Smlaier * notice, this list of conditions and the following disclaimer in the 12126258Smlaier * documentation and/or other materials provided with the distribution. 13126258Smlaier * 14126258Smlaier * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15126258Smlaier * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16126258Smlaier * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17126258Smlaier * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18126258Smlaier * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19126258Smlaier * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20126258Smlaier * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21126258Smlaier * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22126258Smlaier * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23126258Smlaier * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24126258Smlaier * SUCH DAMAGE. 25126258Smlaier * 26126258Smlaier * $FreeBSD: head/usr.sbin/ppp/ncpaddr.c 134789 2004-09-05 01:46:52Z brian $ 27126258Smlaier */ 28126258Smlaier 29126258Smlaier#include <sys/types.h> 30126258Smlaier#include <sys/socket.h> 31126258Smlaier#ifdef __OpenBSD__ 32126258Smlaier#include <net/if_types.h> 33126258Smlaier#include <net/route.h> 34126258Smlaier#endif 35126258Smlaier#include <netinet/in.h> 36126258Smlaier#include <netinet/in_systm.h> 37126258Smlaier#include <netinet/ip.h> 38126258Smlaier#include <arpa/inet.h> 39127145Smlaier#include <sys/un.h> 40126261Smlaier 41126261Smlaier#include <netdb.h> 42126261Smlaier#include <stdio.h> 43126261Smlaier#include <stdlib.h> 44127145Smlaier#include <string.h> 45126261Smlaier#include <termios.h> 46126261Smlaier 47127145Smlaier#include "log.h" 48127145Smlaier#include "ncpaddr.h" 49127145Smlaier#include "timer.h" 50126261Smlaier#include "fsm.h" 51126258Smlaier#include "defs.h" 52126258Smlaier#include "slcompress.h" 53126258Smlaier#include "iplist.h" 54126261Smlaier#include "throughput.h" 55126258Smlaier#include "mbuf.h" 56126258Smlaier#include "ipcp.h" 57126258Smlaier#include "descriptor.h" 58126258Smlaier#include "layer.h" 59126258Smlaier#include "lqr.h" 60126258Smlaier#include "hdlc.h" 61126258Smlaier#include "lcp.h" 62126258Smlaier#include "ccp.h" 63126258Smlaier#include "link.h" 64127145Smlaier#include "mp.h" 65126261Smlaier#include "ipv6cp.h" 66130613Smlaier#include "ncp.h" 67126261Smlaier 68126258Smlaier 69126261Smlaier#define ncprange_ip4addr u.ip4.ipaddr 70126258Smlaier#define ncprange_ip4mask u.ip4.mask 71126258Smlaier#define ncprange_ip4width u.ip4.width 72126258Smlaier#define ncpaddr_ip4addr u.ip4addr 73126258Smlaier#ifndef NOINET6 74126258Smlaier#define ncprange_ip6addr u.ip6.ipaddr 75126258Smlaier#define ncprange_ip6width u.ip6.width 76126258Smlaier#define ncpaddr_ip6addr u.ip6addr 77126258Smlaier#endif 78126258Smlaier 79126258Smlaier#define NCP_ASCIIBUFFERSIZE 52 80126258Smlaier 81126258Smlaierstatic struct in_addr 82126258Smlaierbits2mask4(int bits) 83126258Smlaier{ 84126258Smlaier struct in_addr result; 85126258Smlaier u_int32_t bit = 0x80000000; 86126258Smlaier 87126258Smlaier result.s_addr = 0; 88126258Smlaier 89126258Smlaier while (bits) { 90126258Smlaier result.s_addr |= bit; 91127145Smlaier bit >>= 1; 92126258Smlaier bits--; 93126261Smlaier } 94126258Smlaier 95126258Smlaier result.s_addr = htonl(result.s_addr); 96130613Smlaier return result; 97130613Smlaier} 98126258Smlaier 99130613Smlaierstatic int 100126258Smlaiermask42bits(struct in_addr mask) 101126258Smlaier{ 102126258Smlaier u_int32_t msk = ntohl(mask.s_addr); 103126258Smlaier u_int32_t tst; 104126258Smlaier int ret; 105126258Smlaier 106127145Smlaier for (ret = 32, tst = 1; tst; ret--, tst <<= 1) 107126261Smlaier if (msk & tst) 108126261Smlaier break; 109126261Smlaier 110126258Smlaier for (tst <<= 1; tst; tst <<= 1) 111126258Smlaier if (!(msk & tst)) 112127145Smlaier break; 113126261Smlaier 114126261Smlaier return tst ? -1 : ret; 115126261Smlaier} 116126258Smlaier 117126261Smlaier#ifndef NOINET6 118126261Smlaierstatic struct in6_addr 119126261Smlaierbits2mask6(int bits) 120126258Smlaier{ 121126258Smlaier struct in6_addr result; 122126258Smlaier u_int32_t bit = 0x80; 123126258Smlaier u_char *c = result.s6_addr; 124126258Smlaier 125126258Smlaier memset(&result, '\0', sizeof result); 126126258Smlaier 127126258Smlaier while (bits) { 128126258Smlaier if (bit == 0) { 129126258Smlaier bit = 0x80; 130126258Smlaier c++; 131126258Smlaier } 132126258Smlaier *c |= bit; 133126258Smlaier bit >>= 1; 134126258Smlaier bits--; 135126258Smlaier } 136130613Smlaier 137126258Smlaier return result; 138126258Smlaier} 139127145Smlaier 140126261Smlaierstatic int 141126261Smlaiermask62bits(const struct in6_addr *mask) 142126258Smlaier{ 143126261Smlaier const u_char masks[] = { 0x00, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe }; 144126258Smlaier const u_char *c, *p, *end; 145126261Smlaier int masklen, m; 146127145Smlaier 147130613Smlaier p = (const u_char *)mask; 148126261Smlaier for (masklen = 0, end = p + 16; p < end && *p == 0xff; p++) 149126261Smlaier masklen += 8; 150130613Smlaier 151126258Smlaier if (p < end) { 152126261Smlaier for (c = masks, m = 0; c < masks + sizeof masks; c++, m++) 153126258Smlaier if (*c == *p) { 154126258Smlaier masklen += m; 155126258Smlaier break; 156126258Smlaier } 157126258Smlaier } 158126258Smlaier 159126258Smlaier return masklen; 160126258Smlaier} 161126258Smlaier 162126258Smlaier#if 0 163126258Smlaierstatic void 164126258Smlaieradjust_linklocal(struct sockaddr_in6 *sin6) 165126258Smlaier{ 166126258Smlaier /* XXX: ?????!?!?!!!!! This is horrible ! */ 167126258Smlaier /* 168126258Smlaier * The kernel does not understand sin6_scope_id for routing at this moment. 169126258Smlaier * We should rather keep the embedded ID. 170126258Smlaier * jinmei@kame.net, 20011026 171126258Smlaier */ 172126258Smlaier if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) || 173126258Smlaier IN6_IS_ADDR_MC_LINKLOCAL(&sin6->sin6_addr)) { 174126258Smlaier sin6->sin6_scope_id = 175126258Smlaier ntohs(*(u_short *)&sin6->sin6_addr.s6_addr[2]); 176126258Smlaier *(u_short *)&sin6->sin6_addr.s6_addr[2] = 0; 177126258Smlaier } 178130613Smlaier} 179126258Smlaier#endif 180126258Smlaier#endif 181126258Smlaier 182130613Smlaiervoid 183126258Smlaierncpaddr_init(struct ncpaddr *addr) 184126258Smlaier{ 185126258Smlaier addr->ncpaddr_family = AF_UNSPEC; 186126258Smlaier} 187130613Smlaier 188126258Smlaierint 189126258Smlaierncpaddr_isset(const struct ncpaddr *addr) 190126258Smlaier{ 191130613Smlaier return addr->ncpaddr_family != AF_UNSPEC; 192126258Smlaier} 193126258Smlaier 194126258Smlaierint 195130613Smlaierncpaddr_isdefault(const struct ncpaddr *addr) 196126258Smlaier{ 197126258Smlaier switch (addr->ncpaddr_family) { 198126258Smlaier case AF_INET: 199130613Smlaier if (addr->ncpaddr_ip4addr.s_addr == INADDR_ANY) 200126258Smlaier return 1; 201126258Smlaier break; 202126258Smlaier 203130613Smlaier#ifndef NOINET6 204126258Smlaier case AF_INET6: 205126258Smlaier if (IN6_IS_ADDR_UNSPECIFIED(&addr->ncpaddr_ip6addr)) 206126258Smlaier return 1; 207130613Smlaier break; 208126258Smlaier#endif 209126258Smlaier } 210130613Smlaier 211126258Smlaier return 0; 212126258Smlaier} 213130613Smlaier 214126258Smlaierint 215126258Smlaierncpaddr_equal(const struct ncpaddr *addr, const struct ncpaddr *cmp) 216130613Smlaier{ 217126258Smlaier if (addr->ncpaddr_family != cmp->ncpaddr_family) 218126258Smlaier return 0; 219130613Smlaier 220126258Smlaier switch (addr->ncpaddr_family) { 221126258Smlaier case AF_INET: 222130613Smlaier return addr->ncpaddr_ip4addr.s_addr == cmp->ncpaddr_ip4addr.s_addr; 223126258Smlaier 224130613Smlaier#ifndef NOINET6 225130613Smlaier case AF_INET6: 226126258Smlaier return !memcmp(&addr->ncpaddr_ip6addr, &cmp->ncpaddr_ip6addr, 227130613Smlaier sizeof addr->ncpaddr_ip6addr); 228130613Smlaier#endif 229126258Smlaier 230126258Smlaier case AF_UNSPEC: 231126258Smlaier return 1; 232126258Smlaier } 233130613Smlaier 234126258Smlaier return 0; 235126258Smlaier} 236126258Smlaier 237126258Smlaiervoid 238126258Smlaierncpaddr_copy(struct ncpaddr *addr, const struct ncpaddr *from) 239126258Smlaier{ 240126258Smlaier switch (from->ncpaddr_family) { 241126258Smlaier case AF_INET: 242126258Smlaier addr->ncpaddr_family = AF_INET; 243126258Smlaier addr->ncpaddr_ip4addr = from->ncpaddr_ip4addr; 244126258Smlaier break; 245126258Smlaier#ifndef NOINET6 246126258Smlaier case AF_INET6: 247130613Smlaier addr->ncpaddr_family = AF_INET6; 248130613Smlaier addr->ncpaddr_ip6addr = from->ncpaddr_ip6addr; 249130613Smlaier break; 250126258Smlaier#endif 251127145Smlaier default: 252126261Smlaier addr->ncpaddr_family = AF_UNSPEC; 253126258Smlaier } 254126261Smlaier} 255126261Smlaier 256130613Smlaiervoid 257130613Smlaierncpaddr_setip4addr(struct ncpaddr *addr, u_int32_t ip) 258130613Smlaier{ 259130613Smlaier addr->ncpaddr_family = AF_INET; 260130613Smlaier addr->ncpaddr_ip4addr.s_addr = ip; 261126261Smlaier} 262126258Smlaier 263126258Smlaierint 264126258Smlaierncpaddr_getip4addr(const struct ncpaddr *addr, u_int32_t *ip) 265126258Smlaier{ 266130613Smlaier if (addr->ncpaddr_family != AF_INET) 267130613Smlaier return 0; 268126258Smlaier *ip = addr->ncpaddr_ip4addr.s_addr; 269130613Smlaier return 1; 270130613Smlaier} 271126258Smlaier 272126258Smlaiervoid 273126258Smlaierncpaddr_setip4(struct ncpaddr *addr, struct in_addr ip) 274126258Smlaier{ 275126258Smlaier addr->ncpaddr_family = AF_INET; 276126258Smlaier addr->ncpaddr_ip4addr = ip; 277126258Smlaier} 278130613Smlaier 279130613Smlaierint 280126258Smlaierncpaddr_getip4(const struct ncpaddr *addr, struct in_addr *ip) 281126258Smlaier{ 282126258Smlaier if (addr->ncpaddr_family != AF_INET) 283126258Smlaier return 0; 284126258Smlaier *ip = addr->ncpaddr_ip4addr; 285126258Smlaier return 1; 286126258Smlaier} 287126258Smlaier 288126258Smlaier#ifndef NOINET6 289126258Smlaiervoid 290126258Smlaierncpaddr_setip6(struct ncpaddr *addr, const struct in6_addr *ip6) 291130613Smlaier{ 292130613Smlaier addr->ncpaddr_family = AF_INET6; 293130613Smlaier addr->ncpaddr_ip6addr = *ip6; 294126258Smlaier} 295130613Smlaier 296130613Smlaierint 297130613Smlaierncpaddr_getip6(const struct ncpaddr *addr, struct in6_addr *ip6) 298130613Smlaier{ 299130613Smlaier if (addr->ncpaddr_family != AF_INET6) 300130613Smlaier return 0; 301130613Smlaier *ip6 = addr->ncpaddr_ip6addr; 302126258Smlaier return 1; 303130613Smlaier} 304130613Smlaier#endif 305130613Smlaier 306130613Smlaiervoid 307130613Smlaierncpaddr_getsa(const struct ncpaddr *addr, struct sockaddr_storage *host) 308130613Smlaier{ 309130613Smlaier struct sockaddr_in *host4 = (struct sockaddr_in *)host; 310130613Smlaier#ifndef NOINET6 311130613Smlaier struct sockaddr_in6 *host6 = (struct sockaddr_in6 *)host; 312130613Smlaier#endif 313130613Smlaier 314130613Smlaier memset(host, '\0', sizeof(*host)); 315130613Smlaier 316127145Smlaier switch (addr->ncpaddr_family) { 317126409Smlaier case AF_INET: 318126409Smlaier host4->sin_family = AF_INET; 319126258Smlaier host4->sin_len = sizeof(*host4); 320126409Smlaier host4->sin_addr = addr->ncpaddr_ip4addr; 321130613Smlaier break; 322126258Smlaier 323126258Smlaier#ifndef NOINET6 324126258Smlaier case AF_INET6: 325130613Smlaier host6->sin6_family = AF_INET6; 326130613Smlaier host6->sin6_len = sizeof(*host6); 327130613Smlaier host6->sin6_addr = addr->ncpaddr_ip6addr; 328130613Smlaier break; 329130613Smlaier#endif 330130613Smlaier 331130613Smlaier default: 332130613Smlaier host->ss_family = AF_UNSPEC; 333130613Smlaier break; 334130613Smlaier } 335130613Smlaier} 336130613Smlaier 337130613Smlaiervoid 338130613Smlaierncpaddr_setsa(struct ncpaddr *addr, const struct sockaddr *host) 339130613Smlaier{ 340130613Smlaier const struct sockaddr_in *host4 = (const struct sockaddr_in *)host; 341130613Smlaier#ifndef NOINET6 342130613Smlaier const struct sockaddr_in6 *host6 = (const struct sockaddr_in6 *)host; 343130613Smlaier#endif 344130613Smlaier 345130613Smlaier switch (host->sa_family) { 346130613Smlaier case AF_INET: 347130613Smlaier addr->ncpaddr_family = AF_INET; 348130613Smlaier addr->ncpaddr_ip4addr = host4->sin_addr; 349130613Smlaier break; 350130613Smlaier 351130613Smlaier#ifndef NOINET6 352130613Smlaier case AF_INET6: 353130613Smlaier if (IN6_IS_ADDR_V4MAPPED(&host6->sin6_addr)) { 354130613Smlaier addr->ncpaddr_family = AF_INET; 355130613Smlaier addr->ncpaddr_ip4addr.s_addr = 356130613Smlaier *(const u_int32_t *)(host6->sin6_addr.s6_addr + 12); 357130613Smlaier } else { 358130613Smlaier addr->ncpaddr_family = AF_INET6; 359130613Smlaier addr->ncpaddr_ip6addr = host6->sin6_addr; 360130613Smlaier } 361130613Smlaier break; 362130613Smlaier#endif 363130613Smlaier 364130613Smlaier default: 365130613Smlaier addr->ncpaddr_family = AF_UNSPEC; 366130613Smlaier } 367130613Smlaier} 368130613Smlaier 369130613Smlaierstatic char * 370130613Smlaierncpaddr_ntowa(const struct ncpaddr *addr) 371130613Smlaier{ 372130613Smlaier static char res[NCP_ASCIIBUFFERSIZE]; 373126258Smlaier#ifndef NOINET6 374126258Smlaier struct sockaddr_in6 sin6; 375126258Smlaier#endif 376126258Smlaier 377126258Smlaier switch (addr->ncpaddr_family) { 378126258Smlaier case AF_INET: 379126258Smlaier snprintf(res, sizeof res, "%s", inet_ntoa(addr->ncpaddr_ip4addr)); 380130613Smlaier return res; 381126258Smlaier 382130613Smlaier#ifndef NOINET6 383126258Smlaier case AF_INET6: 384130613Smlaier memset(&sin6, '\0', sizeof(sin6)); 385126258Smlaier sin6.sin6_len = sizeof(sin6); 386130613Smlaier sin6.sin6_family = AF_INET6; 387126258Smlaier sin6.sin6_addr = addr->ncpaddr_ip6addr; 388126258Smlaier#if 0 389126258Smlaier adjust_linklocal(&sin6); 390126258Smlaier#endif 391126258Smlaier#ifdef NI_WITHSCOPEID 392130613Smlaier if (getnameinfo((struct sockaddr *)&sin6, sizeof sin6, res, sizeof(res), 393126258Smlaier NULL, 0, NI_WITHSCOPEID | NI_NUMERICHOST) != 0) 394130613Smlaier#else 395126258Smlaier if (getnameinfo((struct sockaddr *)&sin6, sizeof sin6, res, sizeof(res), 396130613Smlaier NULL, 0, NI_NUMERICHOST) != 0) 397126258Smlaier#endif 398130613Smlaier break; 399126258Smlaier 400130613Smlaier return res; 401126258Smlaier#endif 402130613Smlaier } 403126258Smlaier 404130613Smlaier snprintf(res, sizeof res, "<AF_UNSPEC>"); 405126258Smlaier return res; 406130613Smlaier} 407126258Smlaier 408130613Smlaierconst char * 409126258Smlaierncpaddr_ntoa(const struct ncpaddr *addr) 410130613Smlaier{ 411126258Smlaier return ncpaddr_ntowa(addr); 412130613Smlaier} 413126258Smlaier 414130613Smlaier 415126258Smlaierint 416130613Smlaierncpaddr_aton(struct ncpaddr *addr, struct ncp *ncp, const char *data) 417126258Smlaier{ 418130613Smlaier struct ncprange range; 419126258Smlaier 420130613Smlaier if (!ncprange_aton(&range, ncp, data)) 421126258Smlaier return 0; 422130613Smlaier 423126258Smlaier if (range.ncprange_family == AF_INET && range.ncprange_ip4width != 32 && 424126258Smlaier range.ncprange_ip4addr.s_addr != INADDR_ANY) { 425126258Smlaier log_Printf(LogWARN, "ncpaddr_aton: %s: Only 32 bits allowed\n", data); 426126258Smlaier return 0; 427126258Smlaier } 428130613Smlaier 429126258Smlaier#ifndef NOINET6 430130613Smlaier if (range.ncprange_family == AF_INET6 && range.ncprange_ip6width != 128 && 431126258Smlaier !IN6_IS_ADDR_UNSPECIFIED(&range.ncprange_ip6addr)) { 432126258Smlaier log_Printf(LogWARN, "ncpaddr_aton: %s: Only 128 bits allowed\n", data); 433126258Smlaier return 0; 434126258Smlaier } 435126258Smlaier#endif 436130613Smlaier 437130613Smlaier switch (range.ncprange_family) { 438130613Smlaier case AF_INET: 439130613Smlaier addr->ncpaddr_family = range.ncprange_family; 440130613Smlaier addr->ncpaddr_ip4addr = range.ncprange_ip4addr; 441130613Smlaier return 1; 442130613Smlaier 443130613Smlaier#ifndef NOINET6 444130613Smlaier case AF_INET6: 445130613Smlaier addr->ncpaddr_family = range.ncprange_family; 446130613Smlaier addr->ncpaddr_ip6addr = range.ncprange_ip6addr; 447130613Smlaier return 1; 448130613Smlaier#endif 449130613Smlaier } 450130613Smlaier 451130613Smlaier return 0; 452130613Smlaier} 453130613Smlaier 454130613Smlaiervoid 455130613Smlaierncprange_init(struct ncprange *range) 456130613Smlaier{ 457130613Smlaier range->ncprange_family = AF_UNSPEC; 458130613Smlaier} 459130613Smlaier 460130613Smlaierint 461130613Smlaierncprange_isset(const struct ncprange *range) 462126258Smlaier{ 463130613Smlaier return range->ncprange_family != AF_UNSPEC; 464130613Smlaier} 465130613Smlaier 466130613Smlaierint 467130613Smlaierncprange_equal(const struct ncprange *range, const struct ncprange *cmp) 468130613Smlaier{ 469130613Smlaier if (range->ncprange_family != cmp->ncprange_family) 470130613Smlaier return 0; 471130613Smlaier 472130613Smlaier switch (range->ncprange_family) { 473130613Smlaier case AF_INET: 474130613Smlaier if (range->ncprange_ip4addr.s_addr != cmp->ncprange_ip4addr.s_addr) 475130613Smlaier return 0; 476130613Smlaier return range->ncprange_ip4mask.s_addr == cmp->ncprange_ip4mask.s_addr; 477130613Smlaier 478130613Smlaier#ifndef NOINET6 479130613Smlaier case AF_INET6: 480130613Smlaier if (range->ncprange_ip6width != cmp->ncprange_ip6width) 481130613Smlaier return 0; 482130613Smlaier return !memcmp(&range->ncprange_ip6addr, &cmp->ncprange_ip6addr, 483130613Smlaier sizeof range->ncprange_ip6addr); 484130613Smlaier#endif 485130613Smlaier 486130613Smlaier case AF_UNSPEC: 487130613Smlaier return 1; 488130613Smlaier } 489130613Smlaier 490130613Smlaier return 0; 491130613Smlaier} 492130613Smlaier 493130613Smlaierint 494130613Smlaierncprange_isdefault(const struct ncprange *range) 495130613Smlaier{ 496130613Smlaier switch (range->ncprange_family) { 497130613Smlaier case AF_INET: 498130613Smlaier if (range->ncprange_ip4addr.s_addr == INADDR_ANY) 499130613Smlaier return 1; 500130613Smlaier break; 501130613Smlaier 502130613Smlaier#ifndef NOINET6 503130613Smlaier case AF_INET6: 504130613Smlaier if (range->ncprange_ip6width == 0 && 505130613Smlaier IN6_IS_ADDR_UNSPECIFIED(&range->ncprange_ip6addr)) 506130613Smlaier return 1; 507130613Smlaier break; 508130613Smlaier#endif 509130613Smlaier } 510130613Smlaier 511130613Smlaier return 0; 512130613Smlaier} 513130613Smlaier 514130613Smlaiervoid 515130613Smlaierncprange_setdefault(struct ncprange *range, int af) 516130613Smlaier{ 517130613Smlaier memset(range, '\0', sizeof *range); 518130613Smlaier range->ncprange_family = af; 519130613Smlaier} 520130613Smlaier 521130613Smlaierint 522130613Smlaierncprange_contains(const struct ncprange *range, const struct ncpaddr *addr) 523130613Smlaier{ 524130613Smlaier#ifndef NOINET6 525130613Smlaier const u_char masks[] = { 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe, 0xff }; 526130613Smlaier const u_char *addrp, *rangep; 527130613Smlaier int bits; 528126258Smlaier#endif 529126258Smlaier 530126258Smlaier if (range->ncprange_family != addr->ncpaddr_family) 531126258Smlaier return 0; 532126258Smlaier 533126258Smlaier switch (range->ncprange_family) { 534126258Smlaier case AF_INET: 535126258Smlaier return !((addr->ncpaddr_ip4addr.s_addr ^ range->ncprange_ip4addr.s_addr) & 536126258Smlaier range->ncprange_ip4mask.s_addr); 537126258Smlaier 538126258Smlaier#ifndef NOINET6 539126258Smlaier case AF_INET6: 540126258Smlaier rangep = (const u_char *)range->ncprange_ip6addr.s6_addr; 541126258Smlaier addrp = (const u_char *)addr->ncpaddr_ip6addr.s6_addr; 542126258Smlaier 543126258Smlaier for (bits = range->ncprange_ip6width; bits > 0; bits -= 8) 544126258Smlaier if ((*addrp++ ^ *rangep++) & masks[bits > 7 ? 7 : bits - 1]) 545126258Smlaier return 0; 546126258Smlaier 547126258Smlaier return 1; 548130613Smlaier#endif 549126258Smlaier } 550130613Smlaier 551130613Smlaier return 0; 552130613Smlaier} 553126258Smlaier 554130613Smlaierint 555130613Smlaierncprange_containsip4(const struct ncprange *range, struct in_addr addr) 556130613Smlaier{ 557130613Smlaier switch (range->ncprange_family) { 558130613Smlaier case AF_INET: 559126258Smlaier return !((addr.s_addr ^ range->ncprange_ip4addr.s_addr) & 560130613Smlaier range->ncprange_ip4mask.s_addr); 561130613Smlaier } 562130613Smlaier 563130613Smlaier return 0; 564130613Smlaier} 565130613Smlaier 566130613Smlaiervoid 567130613Smlaierncprange_copy(struct ncprange *range, const struct ncprange *from) 568130613Smlaier{ 569126258Smlaier switch (from->ncprange_family) { 570130613Smlaier case AF_INET: 571130613Smlaier range->ncprange_family = AF_INET; 572130613Smlaier range->ncprange_ip4addr = from->ncprange_ip4addr; 573130613Smlaier range->ncprange_ip4mask = from->ncprange_ip4mask; 574130613Smlaier range->ncprange_ip4width = from->ncprange_ip4width; 575130613Smlaier break; 576130613Smlaier 577130613Smlaier#ifndef NOINET6 578130613Smlaier case AF_INET6: 579130613Smlaier range->ncprange_family = AF_INET6; 580130613Smlaier range->ncprange_ip6addr = from->ncprange_ip6addr; 581126258Smlaier range->ncprange_ip6width = from->ncprange_ip6width; 582126258Smlaier break; 583130613Smlaier#endif 584130613Smlaier 585130613Smlaier default: 586130613Smlaier range->ncprange_family = AF_UNSPEC; 587130613Smlaier } 588130613Smlaier} 589130613Smlaier 590130613Smlaiervoid 591130613Smlaierncprange_set(struct ncprange *range, const struct ncpaddr *addr, int width) 592130613Smlaier{ 593130613Smlaier ncprange_sethost(range, addr); 594130613Smlaier ncprange_setwidth(range, width); 595130613Smlaier} 596130613Smlaier 597130613Smlaiervoid 598130613Smlaierncprange_sethost(struct ncprange *range, const struct ncpaddr *from) 599130613Smlaier{ 600130613Smlaier switch (from->ncpaddr_family) { 601130613Smlaier case AF_INET: 602130613Smlaier range->ncprange_family = AF_INET; 603130613Smlaier range->ncprange_ip4addr = from->ncpaddr_ip4addr; 604130613Smlaier if (from->ncpaddr_ip4addr.s_addr == INADDR_ANY) { 605130613Smlaier range->ncprange_ip4mask.s_addr = INADDR_ANY; 606130613Smlaier range->ncprange_ip4width = 0; 607130613Smlaier } else { 608130613Smlaier range->ncprange_ip4mask.s_addr = INADDR_BROADCAST; 609130613Smlaier range->ncprange_ip4width = 32; 610130613Smlaier } 611130613Smlaier break; 612130613Smlaier 613130613Smlaier#ifndef NOINET6 614130613Smlaier case AF_INET6: 615130613Smlaier range->ncprange_family = AF_INET6; 616130613Smlaier range->ncprange_ip6addr = from->ncpaddr_ip6addr; 617130613Smlaier range->ncprange_ip6width = 128; 618130613Smlaier break; 619130613Smlaier#endif 620130613Smlaier 621126258Smlaier default: 622130613Smlaier range->ncprange_family = AF_UNSPEC; 623130613Smlaier } 624126258Smlaier} 625130613Smlaier 626126258Smlaierint 627130613Smlaierncprange_ishost(const struct ncprange *range) 628130613Smlaier{ 629130613Smlaier switch (range->ncprange_family) { 630130613Smlaier case AF_INET: 631130613Smlaier return range->ncprange_ip4width == 32; 632130613Smlaier#ifndef NOINET6 633130613Smlaier case AF_INET6: 634130613Smlaier return range->ncprange_ip6width == 128; 635130613Smlaier#endif 636130613Smlaier } 637130613Smlaier 638130613Smlaier return (0); 639130613Smlaier} 640130613Smlaier 641130613Smlaierint 642130613Smlaierncprange_setwidth(struct ncprange *range, int width) 643130613Smlaier{ 644130613Smlaier switch (range->ncprange_family) { 645130613Smlaier case AF_INET: 646130613Smlaier if (width < 0 || width > 32) 647130613Smlaier break; 648130613Smlaier range->ncprange_ip4width = width; 649130613Smlaier range->ncprange_ip4mask = bits2mask4(width); 650130613Smlaier break; 651130613Smlaier 652130613Smlaier#ifndef NOINET6 653130613Smlaier case AF_INET6: 654130613Smlaier if (width < 0 || width > 128) 655130613Smlaier break; 656130613Smlaier range->ncprange_ip6width = width; 657130613Smlaier break; 658130613Smlaier#endif 659130613Smlaier 660130613Smlaier case AF_UNSPEC: 661130613Smlaier return 1; 662130613Smlaier } 663130613Smlaier 664130613Smlaier return 0; 665130613Smlaier} 666130613Smlaier 667130613Smlaiervoid 668130613Smlaierncprange_setip4host(struct ncprange *range, struct in_addr from) 669130613Smlaier{ 670130613Smlaier range->ncprange_family = AF_INET; 671130613Smlaier range->ncprange_ip4addr = from; 672130613Smlaier if (from.s_addr == INADDR_ANY) { 673130613Smlaier range->ncprange_ip4mask.s_addr = INADDR_ANY; 674130613Smlaier range->ncprange_ip4width = 0; 675130613Smlaier } else { 676130613Smlaier range->ncprange_ip4mask.s_addr = INADDR_BROADCAST; 677130613Smlaier range->ncprange_ip4width = 32; 678130613Smlaier } 679126258Smlaier} 680130613Smlaier 681130613Smlaiervoid 682130613Smlaierncprange_setip4(struct ncprange *range, struct in_addr from, struct in_addr msk) 683126258Smlaier{ 684130613Smlaier range->ncprange_family = AF_INET; 685130613Smlaier range->ncprange_ip4addr = from; 686126258Smlaier range->ncprange_ip4mask = msk; 687126258Smlaier range->ncprange_ip4width = mask42bits(msk); 688126258Smlaier} 689126258Smlaier 690126258Smlaier 691126258Smlaierint 692126258Smlaierncprange_setip4mask(struct ncprange *range, struct in_addr mask) 693126258Smlaier{ 694126258Smlaier if (range->ncprange_family != AF_INET) 695126258Smlaier return 0; 696126258Smlaier range->ncprange_ip4mask = mask; 697130613Smlaier range->ncprange_ip4width = mask42bits(mask); 698130613Smlaier return 1; 699126258Smlaier} 700126258Smlaier 701126258Smlaiervoid 702126258Smlaierncprange_setsa(struct ncprange *range, const struct sockaddr *host, 703126258Smlaier const struct sockaddr *mask) 704130613Smlaier{ 705126258Smlaier const struct sockaddr_in *host4 = (const struct sockaddr_in *)host; 706126258Smlaier const struct sockaddr_in *mask4 = (const struct sockaddr_in *)mask; 707126258Smlaier#ifndef NOINET6 708126258Smlaier const struct sockaddr_in6 *host6 = (const struct sockaddr_in6 *)host; 709126258Smlaier const struct sockaddr_in6 *mask6 = (const struct sockaddr_in6 *)mask; 710126258Smlaier#endif 711126258Smlaier 712126258Smlaier switch (host->sa_family) { 713126258Smlaier case AF_INET: 714126258Smlaier range->ncprange_family = AF_INET; 715126258Smlaier range->ncprange_ip4addr = host4->sin_addr; 716130613Smlaier if (host4->sin_addr.s_addr == INADDR_ANY) { 717130613Smlaier range->ncprange_ip4mask.s_addr = INADDR_ANY; 718126258Smlaier range->ncprange_ip4width = 0; 719126258Smlaier } else if (mask4 && mask4->sin_family == AF_INET) { 720130613Smlaier range->ncprange_ip4mask.s_addr = mask4->sin_addr.s_addr; 721126258Smlaier range->ncprange_ip4width = mask42bits(mask4->sin_addr); 722126258Smlaier } else { 723126258Smlaier range->ncprange_ip4mask.s_addr = INADDR_BROADCAST; 724130613Smlaier range->ncprange_ip4width = 32; 725130613Smlaier } 726130613Smlaier break; 727130613Smlaier 728130613Smlaier#ifndef NOINET6 729130613Smlaier case AF_INET6: 730130613Smlaier range->ncprange_family = AF_INET6; 731130613Smlaier range->ncprange_ip6addr = host6->sin6_addr; 732130613Smlaier if (IN6_IS_ADDR_UNSPECIFIED(&host6->sin6_addr)) 733130613Smlaier range->ncprange_ip6width = 0; 734130613Smlaier else 735130613Smlaier range->ncprange_ip6width = mask6 ? mask62bits(&mask6->sin6_addr) : 128; 736130613Smlaier break; 737130613Smlaier#endif 738130613Smlaier 739130613Smlaier default: 740130613Smlaier range->ncprange_family = AF_UNSPEC; 741130613Smlaier } 742130613Smlaier} 743130613Smlaier 744130613Smlaiervoid 745130613Smlaierncprange_getsa(const struct ncprange *range, struct sockaddr_storage *host, 746130613Smlaier struct sockaddr_storage *mask) 747130613Smlaier{ 748130613Smlaier struct sockaddr_in *host4 = (struct sockaddr_in *)host; 749130613Smlaier struct sockaddr_in *mask4 = (struct sockaddr_in *)mask; 750126258Smlaier#ifndef NOINET6 751126258Smlaier struct sockaddr_in6 *host6 = (struct sockaddr_in6 *)host; 752130613Smlaier struct sockaddr_in6 *mask6 = (struct sockaddr_in6 *)mask; 753126258Smlaier#endif 754126258Smlaier 755126258Smlaier memset(host, '\0', sizeof(*host)); 756126258Smlaier if (mask) 757126258Smlaier memset(mask, '\0', sizeof(*mask)); 758126258Smlaier 759126258Smlaier switch (range->ncprange_family) { 760126258Smlaier case AF_INET: 761126258Smlaier host4->sin_family = AF_INET; 762127145Smlaier host4->sin_len = sizeof(*host4); 763126261Smlaier host4->sin_addr = range->ncprange_ip4addr; 764126261Smlaier if (mask4) { 765126258Smlaier mask4->sin_family = AF_INET; 766126261Smlaier mask4->sin_len = sizeof(*host4); 767126258Smlaier mask4->sin_addr = range->ncprange_ip4mask; 768126258Smlaier } 769127145Smlaier break; 770126261Smlaier 771126261Smlaier#ifndef NOINET6 772126258Smlaier case AF_INET6: 773126258Smlaier host6->sin6_family = AF_INET6; 774126258Smlaier host6->sin6_len = sizeof(*host6); 775130613Smlaier host6->sin6_addr = range->ncprange_ip6addr; 776126258Smlaier if (mask6) { 777127145Smlaier mask6->sin6_family = AF_INET6; 778126261Smlaier mask6->sin6_len = sizeof(*host6); 779126261Smlaier mask6->sin6_addr = bits2mask6(range->ncprange_ip6width); 780126258Smlaier } 781127145Smlaier break; 782126261Smlaier#endif 783126261Smlaier 784126261Smlaier default: 785126258Smlaier host->ss_family = AF_UNSPEC; 786126261Smlaier if (mask) 787126258Smlaier mask->ss_family = AF_UNSPEC; 788126258Smlaier break; 789126258Smlaier } 790126258Smlaier} 791126258Smlaier 792126258Smlaierint 793126258Smlaierncprange_getaddr(const struct ncprange *range, struct ncpaddr *addr) 794126258Smlaier{ 795126258Smlaier switch (range->ncprange_family) { 796126258Smlaier case AF_INET: 797126258Smlaier addr->ncpaddr_family = AF_INET; 798126258Smlaier addr->ncpaddr_ip4addr = range->ncprange_ip4addr; 799127145Smlaier return 1; 800126261Smlaier#ifndef NOINET6 801126261Smlaier case AF_INET6: 802126258Smlaier addr->ncpaddr_family = AF_INET6; 803126261Smlaier addr->ncpaddr_ip6addr = range->ncprange_ip6addr; 804126258Smlaier return 1; 805126258Smlaier#endif 806127145Smlaier } 807126261Smlaier 808126261Smlaier return 0; 809126261Smlaier} 810126258Smlaier 811126261Smlaierint 812126258Smlaierncprange_getip4addr(const struct ncprange *range, struct in_addr *addr) 813126258Smlaier{ 814126258Smlaier if (range->ncprange_family != AF_INET) 815126258Smlaier return 0; 816126258Smlaier 817126258Smlaier *addr = range->ncprange_ip4addr; 818126258Smlaier return 1; 819126258Smlaier} 820126258Smlaier 821126258Smlaierint 822126258Smlaierncprange_getip4mask(const struct ncprange *range, struct in_addr *mask) 823126258Smlaier{ 824126258Smlaier switch (range->ncprange_family) { 825126258Smlaier case AF_INET: 826126258Smlaier *mask = range->ncprange_ip4mask; 827126258Smlaier return 1; 828126258Smlaier } 829127145Smlaier 830126261Smlaier return 0; 831126261Smlaier} 832126258Smlaier 833126261Smlaierint 834126258Smlaierncprange_getwidth(const struct ncprange *range, int *width) 835126258Smlaier{ 836126258Smlaier switch (range->ncprange_family) { 837126258Smlaier case AF_INET: 838126258Smlaier *width = range->ncprange_ip4width; 839130613Smlaier return 1; 840126258Smlaier#ifndef NOINET6 841130613Smlaier case AF_INET6: 842126258Smlaier *width = range->ncprange_ip6width; 843130613Smlaier return 1; 844130613Smlaier#endif 845126258Smlaier } 846127145Smlaier 847130613Smlaier return 0; 848126261Smlaier} 849130613Smlaier 850126261Smlaierconst char * 851130613Smlaierncprange_ntoa(const struct ncprange *range) 852130613Smlaier{ 853130613Smlaier char *res; 854130613Smlaier struct ncpaddr addr; 855130613Smlaier int len; 856130613Smlaier 857130613Smlaier if (!ncprange_getaddr(range, &addr)) 858130613Smlaier return "<AF_UNSPEC>"; 859130613Smlaier 860130613Smlaier res = ncpaddr_ntowa(&addr); 861130613Smlaier len = strlen(res); 862130613Smlaier if (len >= NCP_ASCIIBUFFERSIZE - 1) 863130613Smlaier return res; 864126258Smlaier 865130613Smlaier switch (range->ncprange_family) { 866130613Smlaier case AF_INET: 867130613Smlaier if (range->ncprange_ip4width == -1) { 868130613Smlaier /* A non-contiguous mask */ 869126258Smlaier for (; len >= 3; res[len -= 2] = '\0') 870130613Smlaier if (strcmp(res + len - 2, ".0")) 871130613Smlaier break; 872130613Smlaier snprintf(res + len, sizeof res - len, "&0x%08lx", 873130613Smlaier (unsigned long)ntohl(range->ncprange_ip4mask.s_addr)); 874130613Smlaier } else if (range->ncprange_ip4width < 32) 875130613Smlaier snprintf(res + len, sizeof res - len, "/%d", range->ncprange_ip4width); 876127145Smlaier 877130613Smlaier return res; 878126261Smlaier 879130613Smlaier#ifndef NOINET6 880126261Smlaier case AF_INET6: 881130613Smlaier if (range->ncprange_ip6width != 128) 882130613Smlaier snprintf(res + len, sizeof res - len, "/%d", range->ncprange_ip6width); 883130613Smlaier 884130613Smlaier return res; 885130613Smlaier#endif 886130613Smlaier } 887130613Smlaier 888130613Smlaier return "<AF_UNSPEC>"; 889130613Smlaier} 890130613Smlaier 891130613Smlaier#ifndef NOINET6 892130613Smlaierint 893130613Smlaierncprange_scopeid(const struct ncprange *range) 894130613Smlaier{ 895130613Smlaier const struct in6_addr *sin6; 896130613Smlaier int scopeid = -1; 897130613Smlaier 898126258Smlaier if (range->ncprange_family == AF_INET6) { 899130613Smlaier sin6 = &range->ncprange_ip6addr; 900130613Smlaier if (IN6_IS_ADDR_LINKLOCAL(sin6) || IN6_IS_ADDR_MC_LINKLOCAL(sin6)) 901130613Smlaier if ((scopeid = ntohs(*(const u_short *)&sin6->s6_addr[2])) == 0) 902130613Smlaier scopeid = -1; 903130613Smlaier } 904130613Smlaier 905130613Smlaier return scopeid; 906130613Smlaier} 907130613Smlaier#endif 908130613Smlaier 909130613Smlaierint 910130613Smlaierncprange_aton(struct ncprange *range, struct ncp *ncp, const char *data) 911130613Smlaier{ 912130613Smlaier int bits, len; 913130613Smlaier char *wp; 914130613Smlaier const char *cp; 915130613Smlaier char *s; 916130613Smlaier 917130613Smlaier len = strcspn(data, "/"); 918130613Smlaier 919130613Smlaier if (ncp && strncasecmp(data, "HISADDR", len) == 0) { 920130613Smlaier range->ncprange_family = AF_INET; 921130613Smlaier range->ncprange_ip4addr = ncp->ipcp.peer_ip; 922130613Smlaier range->ncprange_ip4mask.s_addr = INADDR_BROADCAST; 923130613Smlaier range->ncprange_ip4width = 32; 924126258Smlaier return 1; 925130613Smlaier#ifndef NOINET6 926126258Smlaier } else if (ncp && strncasecmp(data, "HISADDR6", len) == 0) { 927130613Smlaier range->ncprange_family = AF_INET6; 928130613Smlaier range->ncprange_ip6addr = ncp->ipv6cp.hisaddr.ncpaddr_ip6addr; 929130613Smlaier range->ncprange_ip6width = 128; 930130613Smlaier return 1; 931130613Smlaier#endif 932130613Smlaier } else if (ncp && strncasecmp(data, "MYADDR", len) == 0) { 933130613Smlaier range->ncprange_family = AF_INET; 934130613Smlaier range->ncprange_ip4addr = ncp->ipcp.my_ip; 935130613Smlaier range->ncprange_ip4mask.s_addr = INADDR_BROADCAST; 936130613Smlaier range->ncprange_ip4width = 32; 937130613Smlaier return 1; 938130613Smlaier#ifndef NOINET6 939130613Smlaier } else if (ncp && strncasecmp(data, "MYADDR6", len) == 0) { 940130613Smlaier range->ncprange_family = AF_INET6; 941130613Smlaier range->ncprange_ip6addr = ncp->ipv6cp.myaddr.ncpaddr_ip6addr; 942126258Smlaier range->ncprange_ip6width = 128; 943126258Smlaier return 1; 944126258Smlaier#endif 945126258Smlaier } else if (ncp && strncasecmp(data, "DNS0", len) == 0) { 946126258Smlaier range->ncprange_family = AF_INET; 947126258Smlaier range->ncprange_ip4addr = ncp->ipcp.ns.dns[0]; 948126258Smlaier range->ncprange_ip4mask.s_addr = INADDR_BROADCAST; 949126258Smlaier range->ncprange_ip4width = 32; 950126258Smlaier return 1; 951126258Smlaier } else if (ncp && strncasecmp(data, "DNS1", len) == 0) { 952126258Smlaier range->ncprange_family = AF_INET; 953126258Smlaier range->ncprange_ip4addr = ncp->ipcp.ns.dns[1]; 954126258Smlaier range->ncprange_ip4mask.s_addr = INADDR_BROADCAST; 955126258Smlaier range->ncprange_ip4width = 32; 956126258Smlaier return 1; 957126258Smlaier } 958126258Smlaier 959126258Smlaier s = (char *)alloca(len + 1); 960126258Smlaier strncpy(s, data, len); 961126258Smlaier s[len] = '\0'; 962126258Smlaier bits = -1; 963126258Smlaier 964126258Smlaier if (data[len] != '\0') { 965126258Smlaier bits = strtol(data + len + 1, &wp, 0); 966126258Smlaier if (*wp || wp == data + len + 1 || bits < 0 || bits > 128) { 967126258Smlaier log_Printf(LogWARN, "ncprange_aton: bad mask width.\n"); 968126258Smlaier return 0; 969126258Smlaier } 970126258Smlaier } 971126258Smlaier 972126258Smlaier if ((cp = strchr(data, ':')) == NULL) { 973126258Smlaier range->ncprange_family = AF_INET; 974126258Smlaier 975126258Smlaier range->ncprange_ip4addr = GetIpAddr(s); 976126258Smlaier 977126258Smlaier if (range->ncprange_ip4addr.s_addr == INADDR_NONE) { 978126258Smlaier log_Printf(LogWARN, "ncprange_aton: %s: Bad address\n", s); 979126258Smlaier return 0; 980126258Smlaier } 981126258Smlaier 982126258Smlaier if (range->ncprange_ip4addr.s_addr == INADDR_ANY) { 983126258Smlaier range->ncprange_ip4mask.s_addr = INADDR_ANY; 984126258Smlaier range->ncprange_ip4width = 0; 985126258Smlaier } else if (bits == -1) { 986126258Smlaier range->ncprange_ip4mask.s_addr = INADDR_BROADCAST; 987126258Smlaier range->ncprange_ip4width = 32; 988126258Smlaier } else if (bits > 32) { 989126258Smlaier log_Printf(LogWARN, "ncprange_aton: bad mask width.\n"); 990126258Smlaier return 0; 991126258Smlaier } else { 992126258Smlaier range->ncprange_ip4mask = bits2mask4(bits); 993126258Smlaier range->ncprange_ip4width = bits; 994126258Smlaier } 995126258Smlaier 996126258Smlaier return 1; 997126258Smlaier#ifndef NOINET6 998126258Smlaier } else if (strchr(cp + 1, ':') != NULL) { 999126258Smlaier range->ncprange_family = AF_INET6; 1000126258Smlaier 1001126258Smlaier if (inet_pton(AF_INET6, s, &range->ncprange_ip6addr) != 1) { 1002126258Smlaier log_Printf(LogWARN, "ncprange_aton: %s: Bad address\n", s); 1003126258Smlaier return 0; 1004126258Smlaier } 1005126258Smlaier 1006126258Smlaier if (IN6_IS_ADDR_UNSPECIFIED(&range->ncprange_ip6addr)) 1007126258Smlaier range->ncprange_ip6width = 0; 1008126258Smlaier else 1009126258Smlaier range->ncprange_ip6width = (bits == -1) ? 128 : bits; 1010126258Smlaier return 1; 1011126258Smlaier#endif 1012126258Smlaier } 1013126258Smlaier 1014126258Smlaier return 0; 1015126258Smlaier} 1016126258Smlaier