The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998 |
| 3 | * The Regents of the University of California. All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that: (1) source code distributions |
| 7 | * retain the above copyright notice and this paragraph in its entirety, (2) |
| 8 | * distributions including binary code include the above copyright notice and |
| 9 | * this paragraph in its entirety in the documentation or other materials |
| 10 | * provided with the distribution, and (3) all advertising materials mentioning |
| 11 | * features or use of this software display the following acknowledgement: |
| 12 | * ``This product includes software developed by the University of California, |
| 13 | * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of |
| 14 | * the University nor the names of its contributors may be used to endorse |
| 15 | * or promote products derived from this software without specific prior |
| 16 | * written permission. |
| 17 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED |
| 18 | * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF |
| 19 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
| 20 | * |
| 21 | * Name to id translation routines used by the scanner. |
| 22 | * These functions are not time critical. |
| 23 | */ |
| 24 | |
| 25 | #ifndef lint |
| 26 | static const char rcsid[] _U_ = |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 27 | "@(#) $Header: /tcpdump/master/libpcap/nametoaddr.c,v 1.83 2008-02-06 10:21:30 guy Exp $ (LBL)"; |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 28 | #endif |
| 29 | |
| 30 | #ifdef HAVE_CONFIG_H |
| 31 | #include "config.h" |
| 32 | #endif |
| 33 | |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 34 | #ifdef DECNETLIB |
| 35 | #include <sys/types.h> |
| 36 | #include <netdnet/dnetdb.h> |
| 37 | #endif |
| 38 | |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 39 | #ifdef WIN32 |
| 40 | #include <pcap-stdinc.h> |
| 41 | |
| 42 | #else /* WIN32 */ |
| 43 | |
| 44 | #include <sys/param.h> |
| 45 | #include <sys/types.h> /* concession to AIX */ |
| 46 | #include <sys/socket.h> |
| 47 | #include <sys/time.h> |
| 48 | |
| 49 | #include <netinet/in.h> |
| 50 | #endif /* WIN32 */ |
| 51 | |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 52 | #ifndef WIN32 |
| 53 | #ifdef HAVE_ETHER_HOSTTON |
| 54 | /* |
| 55 | * XXX - do we need any of this if <netinet/if_ether.h> doesn't declare |
| 56 | * ether_hostton()? |
| 57 | */ |
| 58 | #ifdef HAVE_NETINET_IF_ETHER_H |
| 59 | struct mbuf; /* Squelch compiler warnings on some platforms for */ |
| 60 | struct rtentry; /* declarations in <net/if.h> */ |
| 61 | #include <net/if.h> /* for "struct ifnet" in "struct arpcom" on Solaris */ |
| 62 | #include <netinet/if_ether.h> |
| 63 | #endif /* HAVE_NETINET_IF_ETHER_H */ |
| 64 | #ifdef NETINET_ETHER_H_DECLARES_ETHER_HOSTTON |
| 65 | #include <netinet/ether.h> |
| 66 | #endif /* NETINET_ETHER_H_DECLARES_ETHER_HOSTTON */ |
| 67 | #endif /* HAVE_ETHER_HOSTTON */ |
| 68 | #include <arpa/inet.h> |
| 69 | #include <netdb.h> |
| 70 | #endif /* WIN32 */ |
| 71 | |
| 72 | #include <ctype.h> |
| 73 | #include <errno.h> |
| 74 | #include <stdlib.h> |
| 75 | #include <string.h> |
| 76 | #include <stdio.h> |
| 77 | |
| 78 | #include "pcap-int.h" |
| 79 | |
| 80 | #include "gencode.h" |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 81 | #include <pcap/namedb.h> |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 82 | |
| 83 | #ifdef HAVE_OS_PROTO_H |
| 84 | #include "os-proto.h" |
| 85 | #endif |
| 86 | |
| 87 | #ifndef NTOHL |
| 88 | #define NTOHL(x) (x) = ntohl(x) |
| 89 | #define NTOHS(x) (x) = ntohs(x) |
| 90 | #endif |
| 91 | |
| 92 | static inline int xdtoi(int); |
| 93 | |
| 94 | /* |
| 95 | * Convert host name to internet address. |
| 96 | * Return 0 upon failure. |
| 97 | */ |
| 98 | bpf_u_int32 ** |
| 99 | pcap_nametoaddr(const char *name) |
| 100 | { |
| 101 | #ifndef h_addr |
| 102 | static bpf_u_int32 *hlist[2]; |
| 103 | #endif |
| 104 | bpf_u_int32 **p; |
| 105 | struct hostent *hp; |
| 106 | |
| 107 | if ((hp = gethostbyname(name)) != NULL) { |
| 108 | #ifndef h_addr |
| 109 | hlist[0] = (bpf_u_int32 *)hp->h_addr; |
| 110 | NTOHL(hp->h_addr); |
| 111 | return hlist; |
| 112 | #else |
| 113 | for (p = (bpf_u_int32 **)hp->h_addr_list; *p; ++p) |
| 114 | NTOHL(**p); |
| 115 | return (bpf_u_int32 **)hp->h_addr_list; |
| 116 | #endif |
| 117 | } |
| 118 | else |
| 119 | return 0; |
| 120 | } |
| 121 | |
| 122 | #ifdef INET6 |
| 123 | struct addrinfo * |
| 124 | pcap_nametoaddrinfo(const char *name) |
| 125 | { |
| 126 | struct addrinfo hints, *res; |
| 127 | int error; |
| 128 | |
| 129 | memset(&hints, 0, sizeof(hints)); |
| 130 | hints.ai_family = PF_UNSPEC; |
| 131 | hints.ai_socktype = SOCK_STREAM; /*not really*/ |
| 132 | hints.ai_protocol = IPPROTO_TCP; /*not really*/ |
| 133 | error = getaddrinfo(name, NULL, &hints, &res); |
| 134 | if (error) |
| 135 | return NULL; |
| 136 | else |
| 137 | return res; |
| 138 | } |
| 139 | #endif /*INET6*/ |
| 140 | |
| 141 | /* |
| 142 | * Convert net name to internet address. |
| 143 | * Return 0 upon failure. |
| 144 | */ |
| 145 | bpf_u_int32 |
| 146 | pcap_nametonetaddr(const char *name) |
| 147 | { |
| 148 | #ifndef WIN32 |
| 149 | struct netent *np; |
| 150 | |
| 151 | if ((np = getnetbyname(name)) != NULL) |
| 152 | return np->n_net; |
| 153 | else |
| 154 | return 0; |
| 155 | #else |
| 156 | /* |
| 157 | * There's no "getnetbyname()" on Windows. |
| 158 | */ |
| 159 | return 0; |
| 160 | #endif |
| 161 | } |
| 162 | |
| 163 | /* |
| 164 | * Convert a port name to its port and protocol numbers. |
| 165 | * We assume only TCP or UDP. |
| 166 | * Return 0 upon failure. |
| 167 | */ |
| 168 | int |
| 169 | pcap_nametoport(const char *name, int *port, int *proto) |
| 170 | { |
| 171 | struct servent *sp; |
| 172 | int tcp_port = -1; |
| 173 | int udp_port = -1; |
| 174 | |
| 175 | /* |
| 176 | * We need to check /etc/services for ambiguous entries. |
| 177 | * If we find the ambiguous entry, and it has the |
| 178 | * same port number, change the proto to PROTO_UNDEF |
| 179 | * so both TCP and UDP will be checked. |
| 180 | */ |
| 181 | sp = getservbyname(name, "tcp"); |
| 182 | if (sp != NULL) tcp_port = ntohs(sp->s_port); |
| 183 | sp = getservbyname(name, "udp"); |
| 184 | if (sp != NULL) udp_port = ntohs(sp->s_port); |
| 185 | if (tcp_port >= 0) { |
| 186 | *port = tcp_port; |
| 187 | *proto = IPPROTO_TCP; |
| 188 | if (udp_port >= 0) { |
| 189 | if (udp_port == tcp_port) |
| 190 | *proto = PROTO_UNDEF; |
| 191 | #ifdef notdef |
| 192 | else |
| 193 | /* Can't handle ambiguous names that refer |
| 194 | to different port numbers. */ |
| 195 | warning("ambiguous port %s in /etc/services", |
| 196 | name); |
| 197 | #endif |
| 198 | } |
| 199 | return 1; |
| 200 | } |
| 201 | if (udp_port >= 0) { |
| 202 | *port = udp_port; |
| 203 | *proto = IPPROTO_UDP; |
| 204 | return 1; |
| 205 | } |
| 206 | #if defined(ultrix) || defined(__osf__) |
| 207 | /* Special hack in case NFS isn't in /etc/services */ |
| 208 | if (strcmp(name, "nfs") == 0) { |
| 209 | *port = 2049; |
| 210 | *proto = PROTO_UNDEF; |
| 211 | return 1; |
| 212 | } |
| 213 | #endif |
| 214 | return 0; |
| 215 | } |
| 216 | |
| 217 | /* |
| 218 | * Convert a string in the form PPP-PPP, where correspond to ports, to |
| 219 | * a starting and ending port in a port range. |
| 220 | * Return 0 on failure. |
| 221 | */ |
| 222 | int |
| 223 | pcap_nametoportrange(const char *name, int *port1, int *port2, int *proto) |
| 224 | { |
| 225 | u_int p1, p2; |
| 226 | char *off, *cpy; |
| 227 | int save_proto; |
| 228 | |
| 229 | if (sscanf(name, "%d-%d", &p1, &p2) != 2) { |
| 230 | if ((cpy = strdup(name)) == NULL) |
| 231 | return 0; |
| 232 | |
| 233 | if ((off = strchr(cpy, '-')) == NULL) { |
| 234 | free(cpy); |
| 235 | return 0; |
| 236 | } |
| 237 | |
| 238 | *off = '\0'; |
| 239 | |
| 240 | if (pcap_nametoport(cpy, port1, proto) == 0) { |
| 241 | free(cpy); |
| 242 | return 0; |
| 243 | } |
| 244 | save_proto = *proto; |
| 245 | |
| 246 | if (pcap_nametoport(off + 1, port2, proto) == 0) { |
| 247 | free(cpy); |
| 248 | return 0; |
| 249 | } |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 250 | free(cpy); |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 251 | |
| 252 | if (*proto != save_proto) |
| 253 | *proto = PROTO_UNDEF; |
| 254 | } else { |
| 255 | *port1 = p1; |
| 256 | *port2 = p2; |
| 257 | *proto = PROTO_UNDEF; |
| 258 | } |
| 259 | |
| 260 | return 1; |
| 261 | } |
| 262 | |
| 263 | int |
| 264 | pcap_nametoproto(const char *str) |
| 265 | { |
| 266 | struct protoent *p; |
| 267 | |
| 268 | p = getprotobyname(str); |
| 269 | if (p != 0) |
| 270 | return p->p_proto; |
| 271 | else |
| 272 | return PROTO_UNDEF; |
| 273 | } |
| 274 | |
| 275 | #include "ethertype.h" |
| 276 | |
| 277 | struct eproto { |
| 278 | const char *s; |
| 279 | u_short p; |
| 280 | }; |
| 281 | |
| 282 | /* Static data base of ether protocol types. */ |
| 283 | struct eproto eproto_db[] = { |
| 284 | { "pup", ETHERTYPE_PUP }, |
| 285 | { "xns", ETHERTYPE_NS }, |
| 286 | { "ip", ETHERTYPE_IP }, |
| 287 | #ifdef INET6 |
| 288 | { "ip6", ETHERTYPE_IPV6 }, |
| 289 | #endif |
| 290 | { "arp", ETHERTYPE_ARP }, |
| 291 | { "rarp", ETHERTYPE_REVARP }, |
| 292 | { "sprite", ETHERTYPE_SPRITE }, |
| 293 | { "mopdl", ETHERTYPE_MOPDL }, |
| 294 | { "moprc", ETHERTYPE_MOPRC }, |
| 295 | { "decnet", ETHERTYPE_DN }, |
| 296 | { "lat", ETHERTYPE_LAT }, |
| 297 | { "sca", ETHERTYPE_SCA }, |
| 298 | { "lanbridge", ETHERTYPE_LANBRIDGE }, |
| 299 | { "vexp", ETHERTYPE_VEXP }, |
| 300 | { "vprod", ETHERTYPE_VPROD }, |
| 301 | { "atalk", ETHERTYPE_ATALK }, |
| 302 | { "atalkarp", ETHERTYPE_AARP }, |
| 303 | { "loopback", ETHERTYPE_LOOPBACK }, |
| 304 | { "decdts", ETHERTYPE_DECDTS }, |
| 305 | { "decdns", ETHERTYPE_DECDNS }, |
| 306 | { (char *)0, 0 } |
| 307 | }; |
| 308 | |
| 309 | int |
| 310 | pcap_nametoeproto(const char *s) |
| 311 | { |
| 312 | struct eproto *p = eproto_db; |
| 313 | |
| 314 | while (p->s != 0) { |
| 315 | if (strcmp(p->s, s) == 0) |
| 316 | return p->p; |
| 317 | p += 1; |
| 318 | } |
| 319 | return PROTO_UNDEF; |
| 320 | } |
| 321 | |
| 322 | #include "llc.h" |
| 323 | |
| 324 | /* Static data base of LLC values. */ |
| 325 | static struct eproto llc_db[] = { |
| 326 | { "iso", LLCSAP_ISONS }, |
| 327 | { "stp", LLCSAP_8021D }, |
| 328 | { "ipx", LLCSAP_IPX }, |
| 329 | { "netbeui", LLCSAP_NETBEUI }, |
| 330 | { (char *)0, 0 } |
| 331 | }; |
| 332 | |
| 333 | int |
| 334 | pcap_nametollc(const char *s) |
| 335 | { |
| 336 | struct eproto *p = llc_db; |
| 337 | |
| 338 | while (p->s != 0) { |
| 339 | if (strcmp(p->s, s) == 0) |
| 340 | return p->p; |
| 341 | p += 1; |
| 342 | } |
| 343 | return PROTO_UNDEF; |
| 344 | } |
| 345 | |
| 346 | /* Hex digit to integer. */ |
| 347 | static inline int |
| 348 | xdtoi(c) |
| 349 | register int c; |
| 350 | { |
| 351 | if (isdigit(c)) |
| 352 | return c - '0'; |
| 353 | else if (islower(c)) |
| 354 | return c - 'a' + 10; |
| 355 | else |
| 356 | return c - 'A' + 10; |
| 357 | } |
| 358 | |
| 359 | int |
| 360 | __pcap_atoin(const char *s, bpf_u_int32 *addr) |
| 361 | { |
| 362 | u_int n; |
| 363 | int len; |
| 364 | |
| 365 | *addr = 0; |
| 366 | len = 0; |
| 367 | while (1) { |
| 368 | n = 0; |
| 369 | while (*s && *s != '.') |
| 370 | n = n * 10 + *s++ - '0'; |
| 371 | *addr <<= 8; |
| 372 | *addr |= n & 0xff; |
| 373 | len += 8; |
| 374 | if (*s == '\0') |
| 375 | return len; |
| 376 | ++s; |
| 377 | } |
| 378 | /* NOTREACHED */ |
| 379 | } |
| 380 | |
| 381 | int |
| 382 | __pcap_atodn(const char *s, bpf_u_int32 *addr) |
| 383 | { |
| 384 | #define AREASHIFT 10 |
| 385 | #define AREAMASK 0176000 |
| 386 | #define NODEMASK 01777 |
| 387 | |
| 388 | u_int node, area; |
| 389 | |
| 390 | if (sscanf(s, "%d.%d", &area, &node) != 2) |
| 391 | bpf_error("malformed decnet address '%s'", s); |
| 392 | |
| 393 | *addr = (area << AREASHIFT) & AREAMASK; |
| 394 | *addr |= (node & NODEMASK); |
| 395 | |
| 396 | return(32); |
| 397 | } |
| 398 | |
| 399 | /* |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 400 | * Convert 's', which can have the one of the forms: |
| 401 | * |
| 402 | * "xx:xx:xx:xx:xx:xx" |
| 403 | * "xx.xx.xx.xx.xx.xx" |
| 404 | * "xx-xx-xx-xx-xx-xx" |
| 405 | * "xxxx.xxxx.xxxx" |
| 406 | * "xxxxxxxxxxxx" |
| 407 | * |
| 408 | * (or various mixes of ':', '.', and '-') into a new |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 409 | * ethernet address. Assumes 's' is well formed. |
| 410 | */ |
| 411 | u_char * |
| 412 | pcap_ether_aton(const char *s) |
| 413 | { |
| 414 | register u_char *ep, *e; |
| 415 | register u_int d; |
| 416 | |
| 417 | e = ep = (u_char *)malloc(6); |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 418 | if (e == NULL) |
| 419 | return (NULL); |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 420 | |
| 421 | while (*s) { |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 422 | if (*s == ':' || *s == '.' || *s == '-') |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 423 | s += 1; |
| 424 | d = xdtoi(*s++); |
| 425 | if (isxdigit((unsigned char)*s)) { |
| 426 | d <<= 4; |
| 427 | d |= xdtoi(*s++); |
| 428 | } |
| 429 | *ep++ = d; |
| 430 | } |
| 431 | |
| 432 | return (e); |
| 433 | } |
| 434 | |
| 435 | #ifndef HAVE_ETHER_HOSTTON |
| 436 | /* Roll our own */ |
| 437 | u_char * |
| 438 | pcap_ether_hostton(const char *name) |
| 439 | { |
| 440 | register struct pcap_etherent *ep; |
| 441 | register u_char *ap; |
| 442 | static FILE *fp = NULL; |
| 443 | static int init = 0; |
| 444 | |
| 445 | if (!init) { |
| 446 | fp = fopen(PCAP_ETHERS_FILE, "r"); |
| 447 | ++init; |
| 448 | if (fp == NULL) |
| 449 | return (NULL); |
| 450 | } else if (fp == NULL) |
| 451 | return (NULL); |
| 452 | else |
| 453 | rewind(fp); |
| 454 | |
| 455 | while ((ep = pcap_next_etherent(fp)) != NULL) { |
| 456 | if (strcmp(ep->name, name) == 0) { |
| 457 | ap = (u_char *)malloc(6); |
| 458 | if (ap != NULL) { |
| 459 | memcpy(ap, ep->addr, 6); |
| 460 | return (ap); |
| 461 | } |
| 462 | break; |
| 463 | } |
| 464 | } |
| 465 | return (NULL); |
| 466 | } |
| 467 | #else |
| 468 | |
| 469 | #if !defined(HAVE_DECL_ETHER_HOSTTON) || !HAVE_DECL_ETHER_HOSTTON |
| 470 | #ifndef HAVE_STRUCT_ETHER_ADDR |
| 471 | struct ether_addr { |
| 472 | unsigned char ether_addr_octet[6]; |
| 473 | }; |
| 474 | #endif |
| 475 | extern int ether_hostton(const char *, struct ether_addr *); |
| 476 | #endif |
| 477 | |
| 478 | /* Use the os supplied routines */ |
| 479 | u_char * |
| 480 | pcap_ether_hostton(const char *name) |
| 481 | { |
| 482 | register u_char *ap; |
| 483 | u_char a[6]; |
| 484 | |
| 485 | ap = NULL; |
| 486 | if (ether_hostton(name, (struct ether_addr *)a) == 0) { |
| 487 | ap = (u_char *)malloc(6); |
| 488 | if (ap != NULL) |
| 489 | memcpy((char *)ap, (char *)a, 6); |
| 490 | } |
| 491 | return (ap); |
| 492 | } |
| 493 | #endif |
| 494 | |
| 495 | u_short |
| 496 | __pcap_nametodnaddr(const char *name) |
| 497 | { |
| 498 | #ifdef DECNETLIB |
| 499 | struct nodeent *getnodebyname(); |
| 500 | struct nodeent *nep; |
| 501 | unsigned short res; |
| 502 | |
| 503 | nep = getnodebyname(name); |
| 504 | if (nep == ((struct nodeent *)0)) |
| 505 | bpf_error("unknown decnet host name '%s'\n", name); |
| 506 | |
| 507 | memcpy((char *)&res, (char *)nep->n_addr, sizeof(unsigned short)); |
| 508 | return(res); |
| 509 | #else |
| 510 | bpf_error("decnet name support not included, '%s' cannot be translated\n", |
| 511 | name); |
| 512 | return(0); |
| 513 | #endif |
| 514 | } |