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 | |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 25 | #ifdef HAVE_CONFIG_H |
Haibo Huang | 165065a | 2018-07-23 17:26:52 -0700 | [diff] [blame] | 26 | #include <config.h> |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 27 | #endif |
| 28 | |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 29 | #ifdef DECNETLIB |
| 30 | #include <sys/types.h> |
| 31 | #include <netdnet/dnetdb.h> |
| 32 | #endif |
| 33 | |
Elliott Hughes | 965a4b5 | 2017-05-15 10:37:39 -0700 | [diff] [blame] | 34 | #ifdef _WIN32 |
Haibo Huang | 165065a | 2018-07-23 17:26:52 -0700 | [diff] [blame] | 35 | #include <winsock2.h> |
| 36 | #include <ws2tcpip.h> |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 37 | |
Haibo Huang | 165065a | 2018-07-23 17:26:52 -0700 | [diff] [blame] | 38 | #ifdef INET6 |
| 39 | /* |
| 40 | * To quote the MSDN page for getaddrinfo() at |
| 41 | * |
| 42 | * https://msdn.microsoft.com/en-us/library/windows/desktop/ms738520(v=vs.85).aspx |
| 43 | * |
| 44 | * "Support for getaddrinfo on Windows 2000 and older versions |
| 45 | * The getaddrinfo function was added to the Ws2_32.dll on Windows XP and |
| 46 | * later. To execute an application that uses this function on earlier |
| 47 | * versions of Windows, then you need to include the Ws2tcpip.h and |
| 48 | * Wspiapi.h files. When the Wspiapi.h include file is added, the |
| 49 | * getaddrinfo function is defined to the WspiapiGetAddrInfo inline |
| 50 | * function in the Wspiapi.h file. At runtime, the WspiapiGetAddrInfo |
| 51 | * function is implemented in such a way that if the Ws2_32.dll or the |
| 52 | * Wship6.dll (the file containing getaddrinfo in the IPv6 Technology |
| 53 | * Preview for Windows 2000) does not include getaddrinfo, then a |
| 54 | * version of getaddrinfo is implemented inline based on code in the |
| 55 | * Wspiapi.h header file. This inline code will be used on older Windows |
| 56 | * platforms that do not natively support the getaddrinfo function." |
| 57 | * |
| 58 | * We use getaddrinfo(), so we include Wspiapi.h here. |
| 59 | */ |
| 60 | #include <wspiapi.h> |
| 61 | #endif /* INET6 */ |
Elliott Hughes | 965a4b5 | 2017-05-15 10:37:39 -0700 | [diff] [blame] | 62 | #else /* _WIN32 */ |
Haibo Huang | 165065a | 2018-07-23 17:26:52 -0700 | [diff] [blame] | 63 | #include <sys/param.h> |
| 64 | #include <sys/types.h> |
| 65 | #include <sys/socket.h> |
| 66 | #include <sys/time.h> |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 67 | |
Haibo Huang | 165065a | 2018-07-23 17:26:52 -0700 | [diff] [blame] | 68 | #include <netinet/in.h> |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 69 | |
Haibo Huang | 165065a | 2018-07-23 17:26:52 -0700 | [diff] [blame] | 70 | #ifdef HAVE_ETHER_HOSTTON |
| 71 | #if defined(NET_ETHERNET_H_DECLARES_ETHER_HOSTTON) |
| 72 | /* |
| 73 | * OK, just include <net/ethernet.h>. |
| 74 | */ |
| 75 | #include <net/ethernet.h> |
| 76 | #elif defined(NETINET_ETHER_H_DECLARES_ETHER_HOSTTON) |
| 77 | /* |
| 78 | * OK, just include <netinet/ether.h> |
| 79 | */ |
| 80 | #include <netinet/ether.h> |
| 81 | #elif defined(SYS_ETHERNET_H_DECLARES_ETHER_HOSTTON) |
| 82 | /* |
| 83 | * OK, just include <sys/ethernet.h> |
| 84 | */ |
| 85 | #include <sys/ethernet.h> |
| 86 | #elif defined(ARPA_INET_H_DECLARES_ETHER_HOSTTON) |
| 87 | /* |
| 88 | * OK, just include <arpa/inet.h> |
| 89 | */ |
| 90 | #include <arpa/inet.h> |
| 91 | #elif defined(NETINET_IF_ETHER_H_DECLARES_ETHER_HOSTTON) |
| 92 | /* |
| 93 | * OK, include <netinet/if_ether.h>, after all the other stuff we |
| 94 | * need to include or define for its benefit. |
| 95 | */ |
| 96 | #define NEED_NETINET_IF_ETHER_H |
| 97 | #else |
| 98 | /* |
| 99 | * We'll have to declare it ourselves. |
| 100 | * If <netinet/if_ether.h> defines struct ether_addr, include |
| 101 | * it. Otherwise, define it ourselves. |
| 102 | */ |
| 103 | #ifdef HAVE_STRUCT_ETHER_ADDR |
| 104 | #define NEED_NETINET_IF_ETHER_H |
| 105 | #else /* HAVE_STRUCT_ETHER_ADDR */ |
| 106 | struct ether_addr { |
| 107 | unsigned char ether_addr_octet[6]; |
| 108 | }; |
| 109 | #endif /* HAVE_STRUCT_ETHER_ADDR */ |
| 110 | #endif /* what declares ether_hostton() */ |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 111 | |
Haibo Huang | 165065a | 2018-07-23 17:26:52 -0700 | [diff] [blame] | 112 | #ifdef NEED_NETINET_IF_ETHER_H |
| 113 | #include <net/if.h> /* Needed on some platforms */ |
| 114 | #include <netinet/in.h> /* Needed on some platforms */ |
| 115 | #include <netinet/if_ether.h> |
| 116 | #endif /* NEED_NETINET_IF_ETHER_H */ |
| 117 | |
| 118 | #ifndef HAVE_DECL_ETHER_HOSTTON |
| 119 | /* |
| 120 | * No header declares it, so declare it ourselves. |
| 121 | */ |
| 122 | extern int ether_hostton(const char *, struct ether_addr *); |
| 123 | #endif /* !defined(HAVE_DECL_ETHER_HOSTTON) */ |
| 124 | #endif /* HAVE_ETHER_HOSTTON */ |
| 125 | |
| 126 | #include <arpa/inet.h> |
| 127 | #include <netdb.h> |
Elliott Hughes | 965a4b5 | 2017-05-15 10:37:39 -0700 | [diff] [blame] | 128 | #endif /* _WIN32 */ |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 129 | |
| 130 | #include <ctype.h> |
| 131 | #include <errno.h> |
| 132 | #include <stdlib.h> |
| 133 | #include <string.h> |
| 134 | #include <stdio.h> |
| 135 | |
| 136 | #include "pcap-int.h" |
| 137 | |
| 138 | #include "gencode.h" |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 139 | #include <pcap/namedb.h> |
Elliott Hughes | 965a4b5 | 2017-05-15 10:37:39 -0700 | [diff] [blame] | 140 | #include "nametoaddr.h" |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 141 | |
| 142 | #ifdef HAVE_OS_PROTO_H |
| 143 | #include "os-proto.h" |
| 144 | #endif |
| 145 | |
| 146 | #ifndef NTOHL |
| 147 | #define NTOHL(x) (x) = ntohl(x) |
| 148 | #define NTOHS(x) (x) = ntohs(x) |
| 149 | #endif |
| 150 | |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 151 | /* |
| 152 | * Convert host name to internet address. |
| 153 | * Return 0 upon failure. |
Haibo Huang | 165065a | 2018-07-23 17:26:52 -0700 | [diff] [blame] | 154 | * XXX - not thread-safe; don't use it inside libpcap. |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 155 | */ |
| 156 | bpf_u_int32 ** |
| 157 | pcap_nametoaddr(const char *name) |
| 158 | { |
| 159 | #ifndef h_addr |
| 160 | static bpf_u_int32 *hlist[2]; |
| 161 | #endif |
| 162 | bpf_u_int32 **p; |
| 163 | struct hostent *hp; |
| 164 | |
| 165 | if ((hp = gethostbyname(name)) != NULL) { |
| 166 | #ifndef h_addr |
| 167 | hlist[0] = (bpf_u_int32 *)hp->h_addr; |
| 168 | NTOHL(hp->h_addr); |
| 169 | return hlist; |
| 170 | #else |
| 171 | for (p = (bpf_u_int32 **)hp->h_addr_list; *p; ++p) |
| 172 | NTOHL(**p); |
| 173 | return (bpf_u_int32 **)hp->h_addr_list; |
| 174 | #endif |
| 175 | } |
| 176 | else |
| 177 | return 0; |
| 178 | } |
| 179 | |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 180 | struct addrinfo * |
| 181 | pcap_nametoaddrinfo(const char *name) |
| 182 | { |
| 183 | struct addrinfo hints, *res; |
| 184 | int error; |
| 185 | |
| 186 | memset(&hints, 0, sizeof(hints)); |
| 187 | hints.ai_family = PF_UNSPEC; |
| 188 | hints.ai_socktype = SOCK_STREAM; /*not really*/ |
| 189 | hints.ai_protocol = IPPROTO_TCP; /*not really*/ |
| 190 | error = getaddrinfo(name, NULL, &hints, &res); |
| 191 | if (error) |
| 192 | return NULL; |
| 193 | else |
| 194 | return res; |
| 195 | } |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 196 | |
| 197 | /* |
| 198 | * Convert net name to internet address. |
| 199 | * Return 0 upon failure. |
Haibo Huang | 165065a | 2018-07-23 17:26:52 -0700 | [diff] [blame] | 200 | * XXX - not guaranteed to be thread-safe! See below for platforms |
| 201 | * on which it is thread-safe and on which it isn't. |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 202 | */ |
| 203 | bpf_u_int32 |
| 204 | pcap_nametonetaddr(const char *name) |
| 205 | { |
Haibo Huang | 165065a | 2018-07-23 17:26:52 -0700 | [diff] [blame] | 206 | #ifdef _WIN32 |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 207 | /* |
| 208 | * There's no "getnetbyname()" on Windows. |
Elliott Hughes | 965a4b5 | 2017-05-15 10:37:39 -0700 | [diff] [blame] | 209 | * |
| 210 | * XXX - I guess we could use the BSD code to read |
| 211 | * C:\Windows\System32\drivers\etc/networks, assuming |
| 212 | * that's its home on all the versions of Windows |
| 213 | * we use, but that file probably just has the loopback |
| 214 | * network on 127/24 on 99 44/100% of Windows machines. |
| 215 | * |
| 216 | * (Heck, these days it probably just has that on 99 44/100% |
| 217 | * of *UN*X* machines.) |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 218 | */ |
| 219 | return 0; |
Haibo Huang | 165065a | 2018-07-23 17:26:52 -0700 | [diff] [blame] | 220 | #else |
| 221 | /* |
| 222 | * UN*X. |
| 223 | */ |
| 224 | struct netent *np; |
| 225 | #if defined(HAVE_LINUX_GETNETBYNAME_R) |
| 226 | /* |
| 227 | * We have Linux's reentrant getnetbyname_r(). |
| 228 | */ |
| 229 | struct netent result_buf; |
| 230 | char buf[1024]; /* arbitrary size */ |
| 231 | int h_errnoval; |
| 232 | int err; |
| 233 | |
| 234 | err = getnetbyname_r(name, &result_buf, buf, sizeof buf, &np, |
| 235 | &h_errnoval); |
| 236 | if (err != 0) { |
| 237 | /* |
| 238 | * XXX - dynamically allocate the buffer, and make it |
| 239 | * bigger if we get ERANGE back? |
| 240 | */ |
| 241 | return 0; |
| 242 | } |
| 243 | #elif defined(HAVE_SOLARIS_IRIX_GETNETBYNAME_R) |
| 244 | /* |
| 245 | * We have Solaris's and IRIX's reentrant getnetbyname_r(). |
| 246 | */ |
| 247 | struct netent result_buf; |
| 248 | char buf[1024]; /* arbitrary size */ |
| 249 | |
| 250 | np = getnetbyname_r(name, &result_buf, buf, (int)sizeof buf); |
| 251 | #elif defined(HAVE_AIX_GETNETBYNAME_R) |
| 252 | /* |
| 253 | * We have AIX's reentrant getnetbyname_r(). |
| 254 | */ |
| 255 | struct netent result_buf; |
| 256 | struct netent_data net_data; |
| 257 | |
| 258 | if (getnetbyname_r(name, &result_buf, &net_data) == -1) |
| 259 | np = NULL; |
| 260 | else |
| 261 | np = &result_buf; |
| 262 | #else |
| 263 | /* |
| 264 | * We don't have any getnetbyname_r(); either we have a |
| 265 | * getnetbyname() that uses thread-specific data, in which |
| 266 | * case we're thread-safe (sufficiently recent FreeBSD, |
| 267 | * sufficiently recent Darwin-based OS, sufficiently recent |
| 268 | * HP-UX, sufficiently recent Tru64 UNIX), or we have the |
| 269 | * traditional getnetbyname() (everything else, including |
| 270 | * current NetBSD and OpenBSD), in which case we're not |
| 271 | * thread-safe. |
| 272 | */ |
| 273 | np = getnetbyname(name); |
| 274 | #endif |
| 275 | if (np != NULL) |
| 276 | return np->n_net; |
| 277 | else |
| 278 | return 0; |
| 279 | #endif /* _WIN32 */ |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 280 | } |
| 281 | |
| 282 | /* |
| 283 | * Convert a port name to its port and protocol numbers. |
| 284 | * We assume only TCP or UDP. |
| 285 | * Return 0 upon failure. |
| 286 | */ |
| 287 | int |
| 288 | pcap_nametoport(const char *name, int *port, int *proto) |
| 289 | { |
Haibo Huang | 165065a | 2018-07-23 17:26:52 -0700 | [diff] [blame] | 290 | struct addrinfo hints, *res, *ai; |
| 291 | int error; |
| 292 | struct sockaddr_in *in4; |
| 293 | #ifdef INET6 |
| 294 | struct sockaddr_in6 *in6; |
| 295 | #endif |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 296 | int tcp_port = -1; |
| 297 | int udp_port = -1; |
| 298 | |
| 299 | /* |
Haibo Huang | 165065a | 2018-07-23 17:26:52 -0700 | [diff] [blame] | 300 | * We check for both TCP and UDP in case there are |
| 301 | * ambiguous entries. |
| 302 | */ |
| 303 | memset(&hints, 0, sizeof(hints)); |
| 304 | hints.ai_family = PF_UNSPEC; |
| 305 | hints.ai_socktype = SOCK_STREAM; |
| 306 | hints.ai_protocol = IPPROTO_TCP; |
| 307 | error = getaddrinfo(NULL, name, &hints, &res); |
| 308 | if (error != 0) { |
| 309 | if (error != EAI_NONAME && |
| 310 | error != EAI_SERVICE) { |
| 311 | /* |
| 312 | * This is a real error, not just "there's |
| 313 | * no such service name". |
| 314 | * XXX - this doesn't return an error string. |
| 315 | */ |
| 316 | return 0; |
| 317 | } |
| 318 | } else { |
| 319 | /* |
| 320 | * OK, we found it. Did it find anything? |
| 321 | */ |
| 322 | for (ai = res; ai != NULL; ai = ai->ai_next) { |
| 323 | /* |
| 324 | * Does it have an address? |
| 325 | */ |
| 326 | if (ai->ai_addr != NULL) { |
| 327 | /* |
| 328 | * Yes. Get a port number; we're done. |
| 329 | */ |
| 330 | if (ai->ai_addr->sa_family == AF_INET) { |
| 331 | in4 = (struct sockaddr_in *)ai->ai_addr; |
| 332 | tcp_port = ntohs(in4->sin_port); |
| 333 | break; |
| 334 | } |
| 335 | #ifdef INET6 |
| 336 | if (ai->ai_addr->sa_family == AF_INET6) { |
| 337 | in6 = (struct sockaddr_in6 *)ai->ai_addr; |
| 338 | tcp_port = ntohs(in6->sin6_port); |
| 339 | break; |
| 340 | } |
| 341 | #endif |
| 342 | } |
| 343 | } |
| 344 | freeaddrinfo(res); |
| 345 | } |
| 346 | |
| 347 | memset(&hints, 0, sizeof(hints)); |
| 348 | hints.ai_family = PF_UNSPEC; |
| 349 | hints.ai_socktype = SOCK_DGRAM; |
| 350 | hints.ai_protocol = IPPROTO_UDP; |
| 351 | error = getaddrinfo(NULL, name, &hints, &res); |
| 352 | if (error != 0) { |
| 353 | if (error != EAI_NONAME && |
| 354 | error != EAI_SERVICE) { |
| 355 | /* |
| 356 | * This is a real error, not just "there's |
| 357 | * no such service name". |
| 358 | * XXX - this doesn't return an error string. |
| 359 | */ |
| 360 | return 0; |
| 361 | } |
| 362 | } else { |
| 363 | /* |
| 364 | * OK, we found it. Did it find anything? |
| 365 | */ |
| 366 | for (ai = res; ai != NULL; ai = ai->ai_next) { |
| 367 | /* |
| 368 | * Does it have an address? |
| 369 | */ |
| 370 | if (ai->ai_addr != NULL) { |
| 371 | /* |
| 372 | * Yes. Get a port number; we're done. |
| 373 | */ |
| 374 | if (ai->ai_addr->sa_family == AF_INET) { |
| 375 | in4 = (struct sockaddr_in *)ai->ai_addr; |
| 376 | udp_port = ntohs(in4->sin_port); |
| 377 | break; |
| 378 | } |
| 379 | #ifdef INET6 |
| 380 | if (ai->ai_addr->sa_family == AF_INET6) { |
| 381 | in6 = (struct sockaddr_in6 *)ai->ai_addr; |
| 382 | udp_port = ntohs(in6->sin6_port); |
| 383 | break; |
| 384 | } |
| 385 | #endif |
| 386 | } |
| 387 | } |
| 388 | freeaddrinfo(res); |
| 389 | } |
| 390 | |
| 391 | /* |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 392 | * We need to check /etc/services for ambiguous entries. |
Haibo Huang | 165065a | 2018-07-23 17:26:52 -0700 | [diff] [blame] | 393 | * If we find an ambiguous entry, and it has the |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 394 | * same port number, change the proto to PROTO_UNDEF |
| 395 | * so both TCP and UDP will be checked. |
| 396 | */ |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 397 | if (tcp_port >= 0) { |
| 398 | *port = tcp_port; |
| 399 | *proto = IPPROTO_TCP; |
| 400 | if (udp_port >= 0) { |
| 401 | if (udp_port == tcp_port) |
| 402 | *proto = PROTO_UNDEF; |
| 403 | #ifdef notdef |
| 404 | else |
| 405 | /* Can't handle ambiguous names that refer |
| 406 | to different port numbers. */ |
| 407 | warning("ambiguous port %s in /etc/services", |
| 408 | name); |
| 409 | #endif |
| 410 | } |
| 411 | return 1; |
| 412 | } |
| 413 | if (udp_port >= 0) { |
| 414 | *port = udp_port; |
| 415 | *proto = IPPROTO_UDP; |
| 416 | return 1; |
| 417 | } |
| 418 | #if defined(ultrix) || defined(__osf__) |
| 419 | /* Special hack in case NFS isn't in /etc/services */ |
| 420 | if (strcmp(name, "nfs") == 0) { |
| 421 | *port = 2049; |
| 422 | *proto = PROTO_UNDEF; |
| 423 | return 1; |
| 424 | } |
| 425 | #endif |
| 426 | return 0; |
| 427 | } |
| 428 | |
| 429 | /* |
| 430 | * Convert a string in the form PPP-PPP, where correspond to ports, to |
| 431 | * a starting and ending port in a port range. |
| 432 | * Return 0 on failure. |
| 433 | */ |
| 434 | int |
| 435 | pcap_nametoportrange(const char *name, int *port1, int *port2, int *proto) |
| 436 | { |
| 437 | u_int p1, p2; |
| 438 | char *off, *cpy; |
| 439 | int save_proto; |
| 440 | |
| 441 | if (sscanf(name, "%d-%d", &p1, &p2) != 2) { |
| 442 | if ((cpy = strdup(name)) == NULL) |
| 443 | return 0; |
| 444 | |
| 445 | if ((off = strchr(cpy, '-')) == NULL) { |
| 446 | free(cpy); |
| 447 | return 0; |
| 448 | } |
| 449 | |
| 450 | *off = '\0'; |
| 451 | |
| 452 | if (pcap_nametoport(cpy, port1, proto) == 0) { |
| 453 | free(cpy); |
| 454 | return 0; |
| 455 | } |
| 456 | save_proto = *proto; |
| 457 | |
| 458 | if (pcap_nametoport(off + 1, port2, proto) == 0) { |
| 459 | free(cpy); |
| 460 | return 0; |
| 461 | } |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 462 | free(cpy); |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 463 | |
| 464 | if (*proto != save_proto) |
| 465 | *proto = PROTO_UNDEF; |
| 466 | } else { |
| 467 | *port1 = p1; |
| 468 | *port2 = p2; |
| 469 | *proto = PROTO_UNDEF; |
| 470 | } |
| 471 | |
| 472 | return 1; |
| 473 | } |
| 474 | |
Haibo Huang | 165065a | 2018-07-23 17:26:52 -0700 | [diff] [blame] | 475 | /* |
| 476 | * XXX - not guaranteed to be thread-safe! See below for platforms |
| 477 | * on which it is thread-safe and on which it isn't. |
| 478 | */ |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 479 | int |
| 480 | pcap_nametoproto(const char *str) |
| 481 | { |
| 482 | struct protoent *p; |
Haibo Huang | 165065a | 2018-07-23 17:26:52 -0700 | [diff] [blame] | 483 | #if defined(HAVE_LINUX_GETNETBYNAME_R) |
| 484 | /* |
| 485 | * We have Linux's reentrant getprotobyname_r(). |
| 486 | */ |
| 487 | struct protoent result_buf; |
| 488 | char buf[1024]; /* arbitrary size */ |
| 489 | int err; |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 490 | |
Haibo Huang | 165065a | 2018-07-23 17:26:52 -0700 | [diff] [blame] | 491 | err = getprotobyname_r(str, &result_buf, buf, sizeof buf, &p); |
| 492 | if (err != 0) { |
| 493 | /* |
| 494 | * XXX - dynamically allocate the buffer, and make it |
| 495 | * bigger if we get ERANGE back? |
| 496 | */ |
| 497 | return 0; |
| 498 | } |
| 499 | #elif defined(HAVE_SOLARIS_IRIX_GETNETBYNAME_R) |
| 500 | /* |
| 501 | * We have Solaris's and IRIX's reentrant getprotobyname_r(). |
| 502 | */ |
| 503 | struct protoent result_buf; |
| 504 | char buf[1024]; /* arbitrary size */ |
| 505 | |
| 506 | p = getprotobyname_r(str, &result_buf, buf, (int)sizeof buf); |
| 507 | #elif defined(HAVE_AIX_GETNETBYNAME_R) |
| 508 | /* |
| 509 | * We have AIX's reentrant getprotobyname_r(). |
| 510 | */ |
| 511 | struct protoent result_buf; |
| 512 | struct protoent_data proto_data; |
| 513 | |
| 514 | if (getprotobyname_r(str, &result_buf, &proto_data) == -1) |
| 515 | p = NULL; |
| 516 | else |
| 517 | p = &result_buf; |
| 518 | #else |
| 519 | /* |
| 520 | * We don't have any getprotobyname_r(); either we have a |
| 521 | * getprotobyname() that uses thread-specific data, in which |
| 522 | * case we're thread-safe (sufficiently recent FreeBSD, |
| 523 | * sufficiently recent Darwin-based OS, sufficiently recent |
| 524 | * HP-UX, sufficiently recent Tru64 UNIX, Windows), or we have |
| 525 | * the traditional getprotobyname() (everything else, including |
| 526 | * current NetBSD and OpenBSD), in which case we're not |
| 527 | * thread-safe. |
| 528 | */ |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 529 | p = getprotobyname(str); |
Haibo Huang | 165065a | 2018-07-23 17:26:52 -0700 | [diff] [blame] | 530 | #endif |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 531 | if (p != 0) |
| 532 | return p->p_proto; |
| 533 | else |
| 534 | return PROTO_UNDEF; |
| 535 | } |
| 536 | |
| 537 | #include "ethertype.h" |
| 538 | |
| 539 | struct eproto { |
| 540 | const char *s; |
| 541 | u_short p; |
| 542 | }; |
| 543 | |
Elliott Hughes | 965a4b5 | 2017-05-15 10:37:39 -0700 | [diff] [blame] | 544 | /* |
| 545 | * Static data base of ether protocol types. |
| 546 | * tcpdump used to import this, and it's declared as an export on |
| 547 | * Debian, at least, so make it a public symbol, even though we |
| 548 | * don't officially export it by declaring it in a header file. |
| 549 | * (Programs *should* do this themselves, as tcpdump now does.) |
Haibo Huang | 165065a | 2018-07-23 17:26:52 -0700 | [diff] [blame] | 550 | * |
| 551 | * We declare it here, right before defining it, to squelch any |
| 552 | * warnings we might get from compilers about the lack of a |
| 553 | * declaration. |
Elliott Hughes | 965a4b5 | 2017-05-15 10:37:39 -0700 | [diff] [blame] | 554 | */ |
Haibo Huang | 165065a | 2018-07-23 17:26:52 -0700 | [diff] [blame] | 555 | PCAP_API struct eproto eproto_db[]; |
Elliott Hughes | 965a4b5 | 2017-05-15 10:37:39 -0700 | [diff] [blame] | 556 | PCAP_API_DEF struct eproto eproto_db[] = { |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 557 | { "pup", ETHERTYPE_PUP }, |
| 558 | { "xns", ETHERTYPE_NS }, |
| 559 | { "ip", ETHERTYPE_IP }, |
| 560 | #ifdef INET6 |
| 561 | { "ip6", ETHERTYPE_IPV6 }, |
| 562 | #endif |
| 563 | { "arp", ETHERTYPE_ARP }, |
| 564 | { "rarp", ETHERTYPE_REVARP }, |
| 565 | { "sprite", ETHERTYPE_SPRITE }, |
| 566 | { "mopdl", ETHERTYPE_MOPDL }, |
| 567 | { "moprc", ETHERTYPE_MOPRC }, |
| 568 | { "decnet", ETHERTYPE_DN }, |
| 569 | { "lat", ETHERTYPE_LAT }, |
| 570 | { "sca", ETHERTYPE_SCA }, |
| 571 | { "lanbridge", ETHERTYPE_LANBRIDGE }, |
| 572 | { "vexp", ETHERTYPE_VEXP }, |
| 573 | { "vprod", ETHERTYPE_VPROD }, |
| 574 | { "atalk", ETHERTYPE_ATALK }, |
| 575 | { "atalkarp", ETHERTYPE_AARP }, |
| 576 | { "loopback", ETHERTYPE_LOOPBACK }, |
| 577 | { "decdts", ETHERTYPE_DECDTS }, |
| 578 | { "decdns", ETHERTYPE_DECDNS }, |
| 579 | { (char *)0, 0 } |
| 580 | }; |
| 581 | |
| 582 | int |
| 583 | pcap_nametoeproto(const char *s) |
| 584 | { |
| 585 | struct eproto *p = eproto_db; |
| 586 | |
| 587 | while (p->s != 0) { |
| 588 | if (strcmp(p->s, s) == 0) |
| 589 | return p->p; |
| 590 | p += 1; |
| 591 | } |
| 592 | return PROTO_UNDEF; |
| 593 | } |
| 594 | |
| 595 | #include "llc.h" |
| 596 | |
| 597 | /* Static data base of LLC values. */ |
| 598 | static struct eproto llc_db[] = { |
| 599 | { "iso", LLCSAP_ISONS }, |
| 600 | { "stp", LLCSAP_8021D }, |
| 601 | { "ipx", LLCSAP_IPX }, |
| 602 | { "netbeui", LLCSAP_NETBEUI }, |
| 603 | { (char *)0, 0 } |
| 604 | }; |
| 605 | |
| 606 | int |
| 607 | pcap_nametollc(const char *s) |
| 608 | { |
| 609 | struct eproto *p = llc_db; |
| 610 | |
| 611 | while (p->s != 0) { |
| 612 | if (strcmp(p->s, s) == 0) |
| 613 | return p->p; |
| 614 | p += 1; |
| 615 | } |
| 616 | return PROTO_UNDEF; |
| 617 | } |
| 618 | |
Haibo Huang | 165065a | 2018-07-23 17:26:52 -0700 | [diff] [blame] | 619 | /* Hex digit to 8-bit unsigned integer. */ |
| 620 | static inline u_char |
| 621 | xdtoi(u_char c) |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 622 | { |
| 623 | if (isdigit(c)) |
Haibo Huang | 165065a | 2018-07-23 17:26:52 -0700 | [diff] [blame] | 624 | return (u_char)(c - '0'); |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 625 | else if (islower(c)) |
Haibo Huang | 165065a | 2018-07-23 17:26:52 -0700 | [diff] [blame] | 626 | return (u_char)(c - 'a' + 10); |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 627 | else |
Haibo Huang | 165065a | 2018-07-23 17:26:52 -0700 | [diff] [blame] | 628 | return (u_char)(c - 'A' + 10); |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 629 | } |
| 630 | |
| 631 | int |
| 632 | __pcap_atoin(const char *s, bpf_u_int32 *addr) |
| 633 | { |
| 634 | u_int n; |
| 635 | int len; |
| 636 | |
| 637 | *addr = 0; |
| 638 | len = 0; |
Haibo Huang | 165065a | 2018-07-23 17:26:52 -0700 | [diff] [blame] | 639 | for (;;) { |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 640 | n = 0; |
| 641 | while (*s && *s != '.') |
| 642 | n = n * 10 + *s++ - '0'; |
| 643 | *addr <<= 8; |
| 644 | *addr |= n & 0xff; |
| 645 | len += 8; |
| 646 | if (*s == '\0') |
| 647 | return len; |
| 648 | ++s; |
| 649 | } |
| 650 | /* NOTREACHED */ |
| 651 | } |
| 652 | |
| 653 | int |
| 654 | __pcap_atodn(const char *s, bpf_u_int32 *addr) |
| 655 | { |
| 656 | #define AREASHIFT 10 |
| 657 | #define AREAMASK 0176000 |
| 658 | #define NODEMASK 01777 |
| 659 | |
| 660 | u_int node, area; |
| 661 | |
| 662 | if (sscanf(s, "%d.%d", &area, &node) != 2) |
Elliott Hughes | 965a4b5 | 2017-05-15 10:37:39 -0700 | [diff] [blame] | 663 | return(0); |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 664 | |
| 665 | *addr = (area << AREASHIFT) & AREAMASK; |
| 666 | *addr |= (node & NODEMASK); |
| 667 | |
| 668 | return(32); |
| 669 | } |
| 670 | |
| 671 | /* |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 672 | * Convert 's', which can have the one of the forms: |
| 673 | * |
| 674 | * "xx:xx:xx:xx:xx:xx" |
| 675 | * "xx.xx.xx.xx.xx.xx" |
| 676 | * "xx-xx-xx-xx-xx-xx" |
| 677 | * "xxxx.xxxx.xxxx" |
| 678 | * "xxxxxxxxxxxx" |
| 679 | * |
| 680 | * (or various mixes of ':', '.', and '-') into a new |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 681 | * ethernet address. Assumes 's' is well formed. |
| 682 | */ |
| 683 | u_char * |
| 684 | pcap_ether_aton(const char *s) |
| 685 | { |
| 686 | register u_char *ep, *e; |
Haibo Huang | 165065a | 2018-07-23 17:26:52 -0700 | [diff] [blame] | 687 | register u_char d; |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 688 | |
| 689 | e = ep = (u_char *)malloc(6); |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 690 | if (e == NULL) |
| 691 | return (NULL); |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 692 | |
| 693 | while (*s) { |
JP Abgrall | 511eca3 | 2014-02-12 13:46:45 -0800 | [diff] [blame] | 694 | if (*s == ':' || *s == '.' || *s == '-') |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 695 | s += 1; |
| 696 | d = xdtoi(*s++); |
| 697 | if (isxdigit((unsigned char)*s)) { |
| 698 | d <<= 4; |
| 699 | d |= xdtoi(*s++); |
| 700 | } |
| 701 | *ep++ = d; |
| 702 | } |
| 703 | |
| 704 | return (e); |
| 705 | } |
| 706 | |
| 707 | #ifndef HAVE_ETHER_HOSTTON |
Haibo Huang | 165065a | 2018-07-23 17:26:52 -0700 | [diff] [blame] | 708 | /* |
| 709 | * Roll our own. |
| 710 | * XXX - not thread-safe, because pcap_next_etherent() isn't thread- |
| 711 | * safe! Needs a mutex or a thread-safe pcap_next_etherent(). |
| 712 | */ |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 713 | u_char * |
| 714 | pcap_ether_hostton(const char *name) |
| 715 | { |
| 716 | register struct pcap_etherent *ep; |
| 717 | register u_char *ap; |
| 718 | static FILE *fp = NULL; |
| 719 | static int init = 0; |
| 720 | |
| 721 | if (!init) { |
| 722 | fp = fopen(PCAP_ETHERS_FILE, "r"); |
| 723 | ++init; |
| 724 | if (fp == NULL) |
| 725 | return (NULL); |
| 726 | } else if (fp == NULL) |
| 727 | return (NULL); |
| 728 | else |
| 729 | rewind(fp); |
| 730 | |
| 731 | while ((ep = pcap_next_etherent(fp)) != NULL) { |
| 732 | if (strcmp(ep->name, name) == 0) { |
| 733 | ap = (u_char *)malloc(6); |
| 734 | if (ap != NULL) { |
| 735 | memcpy(ap, ep->addr, 6); |
| 736 | return (ap); |
| 737 | } |
| 738 | break; |
| 739 | } |
| 740 | } |
| 741 | return (NULL); |
| 742 | } |
| 743 | #else |
Haibo Huang | 165065a | 2018-07-23 17:26:52 -0700 | [diff] [blame] | 744 | /* |
| 745 | * Use the OS-supplied routine. |
| 746 | * This *should* be thread-safe; the API doesn't have a static buffer. |
| 747 | */ |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 748 | u_char * |
| 749 | pcap_ether_hostton(const char *name) |
| 750 | { |
| 751 | register u_char *ap; |
| 752 | u_char a[6]; |
| 753 | |
| 754 | ap = NULL; |
| 755 | if (ether_hostton(name, (struct ether_addr *)a) == 0) { |
| 756 | ap = (u_char *)malloc(6); |
| 757 | if (ap != NULL) |
| 758 | memcpy((char *)ap, (char *)a, 6); |
| 759 | } |
| 760 | return (ap); |
| 761 | } |
| 762 | #endif |
| 763 | |
Haibo Huang | 165065a | 2018-07-23 17:26:52 -0700 | [diff] [blame] | 764 | /* |
| 765 | * XXX - not guaranteed to be thread-safe! |
| 766 | */ |
Elliott Hughes | 965a4b5 | 2017-05-15 10:37:39 -0700 | [diff] [blame] | 767 | int |
Haibo Huang | 165065a | 2018-07-23 17:26:52 -0700 | [diff] [blame] | 768 | #ifdef DECNETLIB |
Elliott Hughes | 965a4b5 | 2017-05-15 10:37:39 -0700 | [diff] [blame] | 769 | __pcap_nametodnaddr(const char *name, u_short *res) |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 770 | { |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 771 | struct nodeent *getnodebyname(); |
| 772 | struct nodeent *nep; |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 773 | |
| 774 | nep = getnodebyname(name); |
| 775 | if (nep == ((struct nodeent *)0)) |
Elliott Hughes | 965a4b5 | 2017-05-15 10:37:39 -0700 | [diff] [blame] | 776 | return(0); |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 777 | |
Elliott Hughes | 965a4b5 | 2017-05-15 10:37:39 -0700 | [diff] [blame] | 778 | memcpy((char *)res, (char *)nep->n_addr, sizeof(unsigned short)); |
| 779 | return(1); |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 780 | #else |
Haibo Huang | 165065a | 2018-07-23 17:26:52 -0700 | [diff] [blame] | 781 | __pcap_nametodnaddr(const char *name _U_, u_short *res _U_) |
| 782 | { |
The Android Open Source Project | 478ab6c | 2009-03-03 19:30:05 -0800 | [diff] [blame] | 783 | return(0); |
| 784 | #endif |
| 785 | } |