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821 lines
19 KiB
821 lines
19 KiB
/*
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* Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998
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* The Regents of the University of California. 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: (1) source code distributions
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* retain the above copyright notice and this paragraph in its entirety, (2)
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* distributions including binary code include the above copyright notice and
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* this paragraph in its entirety in the documentation or other materials
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* provided with the distribution, and (3) all advertising materials mentioning
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* features or use of this software display the following acknowledgement:
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* ``This product includes software developed by the University of California,
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* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
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* the University nor the names of its contributors may be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*
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* Name to id translation routines used by the scanner.
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* These functions are not time critical.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#ifdef DECNETLIB
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#include <sys/types.h>
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#include <netdnet/dnetdb.h>
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#endif
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#ifdef _WIN32
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#include <winsock2.h>
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#include <ws2tcpip.h>
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#ifdef INET6
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/*
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* To quote the MSDN page for getaddrinfo() at
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*
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* https://msdn.microsoft.com/en-us/library/windows/desktop/ms738520(v=vs.85).aspx
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*
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* "Support for getaddrinfo on Windows 2000 and older versions
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* The getaddrinfo function was added to the Ws2_32.dll on Windows XP and
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* later. To execute an application that uses this function on earlier
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* versions of Windows, then you need to include the Ws2tcpip.h and
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* Wspiapi.h files. When the Wspiapi.h include file is added, the
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* getaddrinfo function is defined to the WspiapiGetAddrInfo inline
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* function in the Wspiapi.h file. At runtime, the WspiapiGetAddrInfo
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* function is implemented in such a way that if the Ws2_32.dll or the
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* Wship6.dll (the file containing getaddrinfo in the IPv6 Technology
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* Preview for Windows 2000) does not include getaddrinfo, then a
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* version of getaddrinfo is implemented inline based on code in the
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* Wspiapi.h header file. This inline code will be used on older Windows
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* platforms that do not natively support the getaddrinfo function."
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*
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* We use getaddrinfo(), so we include Wspiapi.h here.
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*/
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#include <wspiapi.h>
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#endif /* INET6 */
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#else /* _WIN32 */
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/time.h>
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#include <netinet/in.h>
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#ifdef HAVE_ETHER_HOSTTON
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#if defined(NET_ETHERNET_H_DECLARES_ETHER_HOSTTON)
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/*
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* OK, just include <net/ethernet.h>.
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*/
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#include <net/ethernet.h>
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#elif defined(NETINET_ETHER_H_DECLARES_ETHER_HOSTTON)
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/*
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* OK, just include <netinet/ether.h>
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*/
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#include <netinet/ether.h>
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#elif defined(SYS_ETHERNET_H_DECLARES_ETHER_HOSTTON)
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/*
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* OK, just include <sys/ethernet.h>
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*/
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#include <sys/ethernet.h>
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#elif defined(ARPA_INET_H_DECLARES_ETHER_HOSTTON)
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/*
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* OK, just include <arpa/inet.h>
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*/
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#include <arpa/inet.h>
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#elif defined(NETINET_IF_ETHER_H_DECLARES_ETHER_HOSTTON)
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/*
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* OK, include <netinet/if_ether.h>, after all the other stuff we
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* need to include or define for its benefit.
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*/
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#define NEED_NETINET_IF_ETHER_H
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#else
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/*
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* We'll have to declare it ourselves.
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* If <netinet/if_ether.h> defines struct ether_addr, include
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* it. Otherwise, define it ourselves.
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*/
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#ifdef HAVE_STRUCT_ETHER_ADDR
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#define NEED_NETINET_IF_ETHER_H
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#else /* HAVE_STRUCT_ETHER_ADDR */
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struct ether_addr {
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unsigned char ether_addr_octet[6];
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};
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#endif /* HAVE_STRUCT_ETHER_ADDR */
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#endif /* what declares ether_hostton() */
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#ifdef NEED_NETINET_IF_ETHER_H
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#include <net/if.h> /* Needed on some platforms */
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#include <netinet/in.h> /* Needed on some platforms */
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#include <netinet/if_ether.h>
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#endif /* NEED_NETINET_IF_ETHER_H */
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#ifndef HAVE_DECL_ETHER_HOSTTON
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/*
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* No header declares it, so declare it ourselves.
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*/
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extern int ether_hostton(const char *, struct ether_addr *);
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#endif /* !defined(HAVE_DECL_ETHER_HOSTTON) */
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#endif /* HAVE_ETHER_HOSTTON */
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#include <arpa/inet.h>
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#include <netdb.h>
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#endif /* _WIN32 */
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include "pcap-int.h"
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#include "diag-control.h"
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#include "gencode.h"
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#include <pcap/namedb.h>
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#include "nametoaddr.h"
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#ifdef HAVE_OS_PROTO_H
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#include "os-proto.h"
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#endif
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#ifndef NTOHL
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#define NTOHL(x) (x) = ntohl(x)
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#define NTOHS(x) (x) = ntohs(x)
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#endif
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/*
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* Convert host name to internet address.
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* Return 0 upon failure.
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* XXX - not thread-safe; don't use it inside libpcap.
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*/
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bpf_u_int32 **
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pcap_nametoaddr(const char *name)
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{
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#ifndef h_addr
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static bpf_u_int32 *hlist[2];
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#endif
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bpf_u_int32 **p;
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struct hostent *hp;
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/*
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* gethostbyname() is deprecated on Windows, perhaps because
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* it's not thread-safe, or because it doesn't support IPv6,
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* or both.
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*
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* We deprecate pcap_nametoaddr() on all platforms because
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* it's not thread-safe; we supply it for backwards compatibility,
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* so suppress the deprecation warning. We could, I guess,
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* use getaddrinfo() and construct the array ourselves, but
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* that's probably not worth the effort, as that wouldn't make
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* this thread-safe - we can't change the API to require that
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* our caller free the address array, so we still have to reuse
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* a local array.
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*/
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DIAG_OFF_DEPRECATION
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if ((hp = gethostbyname(name)) != NULL) {
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DIAG_ON_DEPRECATION
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#ifndef h_addr
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hlist[0] = (bpf_u_int32 *)hp->h_addr;
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NTOHL(hp->h_addr);
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return hlist;
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#else
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for (p = (bpf_u_int32 **)hp->h_addr_list; *p; ++p)
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NTOHL(**p);
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return (bpf_u_int32 **)hp->h_addr_list;
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#endif
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}
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else
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return 0;
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}
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struct addrinfo *
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pcap_nametoaddrinfo(const char *name)
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{
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struct addrinfo hints, *res;
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int error;
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memset(&hints, 0, sizeof(hints));
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hints.ai_family = PF_UNSPEC;
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hints.ai_socktype = SOCK_STREAM; /*not really*/
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hints.ai_protocol = IPPROTO_TCP; /*not really*/
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error = getaddrinfo(name, NULL, &hints, &res);
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if (error)
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return NULL;
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else
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return res;
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}
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/*
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* Convert net name to internet address.
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* Return 0 upon failure.
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* XXX - not guaranteed to be thread-safe! See below for platforms
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* on which it is thread-safe and on which it isn't.
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*/
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#if defined(_WIN32) || defined(__CYGWIN__)
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bpf_u_int32
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pcap_nametonetaddr(const char *name _U_)
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{
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/*
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* There's no "getnetbyname()" on Windows.
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*
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* XXX - I guess we could use the BSD code to read
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* C:\Windows\System32\drivers\etc/networks, assuming
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* that's its home on all the versions of Windows
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* we use, but that file probably just has the loopback
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* network on 127/24 on 99 44/100% of Windows machines.
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*
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* (Heck, these days it probably just has that on 99 44/100%
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* of *UN*X* machines.)
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*/
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return 0;
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}
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#else /* _WIN32 */
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bpf_u_int32
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pcap_nametonetaddr(const char *name)
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{
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/*
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* UN*X.
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*/
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struct netent *np;
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#if defined(HAVE_LINUX_GETNETBYNAME_R)
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/*
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* We have Linux's reentrant getnetbyname_r().
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*/
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struct netent result_buf;
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char buf[1024]; /* arbitrary size */
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int h_errnoval;
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int err;
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/*
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* Apparently, the man page at
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*
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* http://man7.org/linux/man-pages/man3/getnetbyname_r.3.html
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*
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* lies when it says
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*
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* If the function call successfully obtains a network record,
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* then *result is set pointing to result_buf; otherwise, *result
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* is set to NULL.
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*
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* and, in fact, at least in some versions of GNU libc, it does
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* *not* always get set if getnetbyname_r() succeeds.
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*/
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np = NULL;
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err = getnetbyname_r(name, &result_buf, buf, sizeof buf, &np,
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&h_errnoval);
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if (err != 0) {
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/*
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* XXX - dynamically allocate the buffer, and make it
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* bigger if we get ERANGE back?
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*/
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return 0;
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}
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#elif defined(HAVE_SOLARIS_IRIX_GETNETBYNAME_R)
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/*
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* We have Solaris's and IRIX's reentrant getnetbyname_r().
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*/
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struct netent result_buf;
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char buf[1024]; /* arbitrary size */
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np = getnetbyname_r(name, &result_buf, buf, (int)sizeof buf);
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#elif defined(HAVE_AIX_GETNETBYNAME_R)
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/*
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* We have AIX's reentrant getnetbyname_r().
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*/
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struct netent result_buf;
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struct netent_data net_data;
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if (getnetbyname_r(name, &result_buf, &net_data) == -1)
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np = NULL;
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else
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np = &result_buf;
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#else
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/*
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* We don't have any getnetbyname_r(); either we have a
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* getnetbyname() that uses thread-specific data, in which
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* case we're thread-safe (sufficiently recent FreeBSD,
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* sufficiently recent Darwin-based OS, sufficiently recent
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* HP-UX, sufficiently recent Tru64 UNIX), or we have the
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* traditional getnetbyname() (everything else, including
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* current NetBSD and OpenBSD), in which case we're not
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* thread-safe.
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*/
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np = getnetbyname(name);
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#endif
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if (np != NULL)
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return np->n_net;
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else
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return 0;
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}
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|
#endif /* _WIN32 */
|
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|
|
/*
|
|
* Convert a port name to its port and protocol numbers.
|
|
* We assume only TCP or UDP.
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* Return 0 upon failure.
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*/
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int
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pcap_nametoport(const char *name, int *port, int *proto)
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{
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struct addrinfo hints, *res, *ai;
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int error;
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struct sockaddr_in *in4;
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#ifdef INET6
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struct sockaddr_in6 *in6;
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#endif
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int tcp_port = -1;
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int udp_port = -1;
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|
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/*
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* We check for both TCP and UDP in case there are
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* ambiguous entries.
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*/
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memset(&hints, 0, sizeof(hints));
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hints.ai_family = PF_UNSPEC;
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hints.ai_socktype = SOCK_STREAM;
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hints.ai_protocol = IPPROTO_TCP;
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error = getaddrinfo(NULL, name, &hints, &res);
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if (error != 0) {
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if (error != EAI_NONAME &&
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error != EAI_SERVICE) {
|
|
/*
|
|
* This is a real error, not just "there's
|
|
* no such service name".
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|
* XXX - this doesn't return an error string.
|
|
*/
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return 0;
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}
|
|
} else {
|
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/*
|
|
* OK, we found it. Did it find anything?
|
|
*/
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for (ai = res; ai != NULL; ai = ai->ai_next) {
|
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/*
|
|
* Does it have an address?
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|
*/
|
|
if (ai->ai_addr != NULL) {
|
|
/*
|
|
* Yes. Get a port number; we're done.
|
|
*/
|
|
if (ai->ai_addr->sa_family == AF_INET) {
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in4 = (struct sockaddr_in *)ai->ai_addr;
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tcp_port = ntohs(in4->sin_port);
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break;
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}
|
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#ifdef INET6
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|
if (ai->ai_addr->sa_family == AF_INET6) {
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in6 = (struct sockaddr_in6 *)ai->ai_addr;
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tcp_port = ntohs(in6->sin6_port);
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break;
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}
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#endif
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}
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}
|
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freeaddrinfo(res);
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}
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|
|
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memset(&hints, 0, sizeof(hints));
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hints.ai_family = PF_UNSPEC;
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hints.ai_socktype = SOCK_DGRAM;
|
|
hints.ai_protocol = IPPROTO_UDP;
|
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error = getaddrinfo(NULL, name, &hints, &res);
|
|
if (error != 0) {
|
|
if (error != EAI_NONAME &&
|
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error != EAI_SERVICE) {
|
|
/*
|
|
* This is a real error, not just "there's
|
|
* no such service name".
|
|
* XXX - this doesn't return an error string.
|
|
*/
|
|
return 0;
|
|
}
|
|
} else {
|
|
/*
|
|
* OK, we found it. Did it find anything?
|
|
*/
|
|
for (ai = res; ai != NULL; ai = ai->ai_next) {
|
|
/*
|
|
* Does it have an address?
|
|
*/
|
|
if (ai->ai_addr != NULL) {
|
|
/*
|
|
* Yes. Get a port number; we're done.
|
|
*/
|
|
if (ai->ai_addr->sa_family == AF_INET) {
|
|
in4 = (struct sockaddr_in *)ai->ai_addr;
|
|
udp_port = ntohs(in4->sin_port);
|
|
break;
|
|
}
|
|
#ifdef INET6
|
|
if (ai->ai_addr->sa_family == AF_INET6) {
|
|
in6 = (struct sockaddr_in6 *)ai->ai_addr;
|
|
udp_port = ntohs(in6->sin6_port);
|
|
break;
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
freeaddrinfo(res);
|
|
}
|
|
|
|
/*
|
|
* We need to check /etc/services for ambiguous entries.
|
|
* If we find an ambiguous entry, and it has the
|
|
* same port number, change the proto to PROTO_UNDEF
|
|
* so both TCP and UDP will be checked.
|
|
*/
|
|
if (tcp_port >= 0) {
|
|
*port = tcp_port;
|
|
*proto = IPPROTO_TCP;
|
|
if (udp_port >= 0) {
|
|
if (udp_port == tcp_port)
|
|
*proto = PROTO_UNDEF;
|
|
#ifdef notdef
|
|
else
|
|
/* Can't handle ambiguous names that refer
|
|
to different port numbers. */
|
|
warning("ambiguous port %s in /etc/services",
|
|
name);
|
|
#endif
|
|
}
|
|
return 1;
|
|
}
|
|
if (udp_port >= 0) {
|
|
*port = udp_port;
|
|
*proto = IPPROTO_UDP;
|
|
return 1;
|
|
}
|
|
#if defined(ultrix) || defined(__osf__)
|
|
/* Special hack in case NFS isn't in /etc/services */
|
|
if (strcmp(name, "nfs") == 0) {
|
|
*port = 2049;
|
|
*proto = PROTO_UNDEF;
|
|
return 1;
|
|
}
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Convert a string in the form PPP-PPP, where correspond to ports, to
|
|
* a starting and ending port in a port range.
|
|
* Return 0 on failure.
|
|
*/
|
|
int
|
|
pcap_nametoportrange(const char *name, int *port1, int *port2, int *proto)
|
|
{
|
|
u_int p1, p2;
|
|
char *off, *cpy;
|
|
int save_proto;
|
|
|
|
if (sscanf(name, "%d-%d", &p1, &p2) != 2) {
|
|
if ((cpy = strdup(name)) == NULL)
|
|
return 0;
|
|
|
|
if ((off = strchr(cpy, '-')) == NULL) {
|
|
free(cpy);
|
|
return 0;
|
|
}
|
|
|
|
*off = '\0';
|
|
|
|
if (pcap_nametoport(cpy, port1, proto) == 0) {
|
|
free(cpy);
|
|
return 0;
|
|
}
|
|
save_proto = *proto;
|
|
|
|
if (pcap_nametoport(off + 1, port2, proto) == 0) {
|
|
free(cpy);
|
|
return 0;
|
|
}
|
|
free(cpy);
|
|
|
|
if (*proto != save_proto)
|
|
*proto = PROTO_UNDEF;
|
|
} else {
|
|
*port1 = p1;
|
|
*port2 = p2;
|
|
*proto = PROTO_UNDEF;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* XXX - not guaranteed to be thread-safe! See below for platforms
|
|
* on which it is thread-safe and on which it isn't.
|
|
*/
|
|
int
|
|
pcap_nametoproto(const char *str)
|
|
{
|
|
struct protoent *p;
|
|
#if defined(HAVE_LINUX_GETNETBYNAME_R)
|
|
/*
|
|
* We have Linux's reentrant getprotobyname_r().
|
|
*/
|
|
struct protoent result_buf;
|
|
char buf[1024]; /* arbitrary size */
|
|
int err;
|
|
|
|
err = getprotobyname_r(str, &result_buf, buf, sizeof buf, &p);
|
|
if (err != 0) {
|
|
/*
|
|
* XXX - dynamically allocate the buffer, and make it
|
|
* bigger if we get ERANGE back?
|
|
*/
|
|
return 0;
|
|
}
|
|
#elif defined(HAVE_SOLARIS_IRIX_GETNETBYNAME_R)
|
|
/*
|
|
* We have Solaris's and IRIX's reentrant getprotobyname_r().
|
|
*/
|
|
struct protoent result_buf;
|
|
char buf[1024]; /* arbitrary size */
|
|
|
|
p = getprotobyname_r(str, &result_buf, buf, (int)sizeof buf);
|
|
#elif defined(HAVE_AIX_GETNETBYNAME_R)
|
|
/*
|
|
* We have AIX's reentrant getprotobyname_r().
|
|
*/
|
|
struct protoent result_buf;
|
|
struct protoent_data proto_data;
|
|
|
|
if (getprotobyname_r(str, &result_buf, &proto_data) == -1)
|
|
p = NULL;
|
|
else
|
|
p = &result_buf;
|
|
#else
|
|
/*
|
|
* We don't have any getprotobyname_r(); either we have a
|
|
* getprotobyname() that uses thread-specific data, in which
|
|
* case we're thread-safe (sufficiently recent FreeBSD,
|
|
* sufficiently recent Darwin-based OS, sufficiently recent
|
|
* HP-UX, sufficiently recent Tru64 UNIX, Windows), or we have
|
|
* the traditional getprotobyname() (everything else, including
|
|
* current NetBSD and OpenBSD), in which case we're not
|
|
* thread-safe.
|
|
*/
|
|
p = getprotobyname(str);
|
|
#endif
|
|
if (p != 0)
|
|
return p->p_proto;
|
|
else
|
|
return PROTO_UNDEF;
|
|
}
|
|
|
|
#include "ethertype.h"
|
|
|
|
struct eproto {
|
|
const char *s;
|
|
u_short p;
|
|
};
|
|
|
|
/*
|
|
* Static data base of ether protocol types.
|
|
* tcpdump used to import this, and it's declared as an export on
|
|
* Debian, at least, so make it a public symbol, even though we
|
|
* don't officially export it by declaring it in a header file.
|
|
* (Programs *should* do this themselves, as tcpdump now does.)
|
|
*
|
|
* We declare it here, right before defining it, to squelch any
|
|
* warnings we might get from compilers about the lack of a
|
|
* declaration.
|
|
*/
|
|
PCAP_API struct eproto eproto_db[];
|
|
PCAP_API_DEF struct eproto eproto_db[] = {
|
|
{ "aarp", ETHERTYPE_AARP },
|
|
{ "arp", ETHERTYPE_ARP },
|
|
{ "atalk", ETHERTYPE_ATALK },
|
|
{ "decnet", ETHERTYPE_DN },
|
|
{ "ip", ETHERTYPE_IP },
|
|
#ifdef INET6
|
|
{ "ip6", ETHERTYPE_IPV6 },
|
|
#endif
|
|
{ "lat", ETHERTYPE_LAT },
|
|
{ "loopback", ETHERTYPE_LOOPBACK },
|
|
{ "mopdl", ETHERTYPE_MOPDL },
|
|
{ "moprc", ETHERTYPE_MOPRC },
|
|
{ "rarp", ETHERTYPE_REVARP },
|
|
{ "sca", ETHERTYPE_SCA },
|
|
{ (char *)0, 0 }
|
|
};
|
|
|
|
int
|
|
pcap_nametoeproto(const char *s)
|
|
{
|
|
struct eproto *p = eproto_db;
|
|
|
|
while (p->s != 0) {
|
|
if (strcmp(p->s, s) == 0)
|
|
return p->p;
|
|
p += 1;
|
|
}
|
|
return PROTO_UNDEF;
|
|
}
|
|
|
|
#include "llc.h"
|
|
|
|
/* Static data base of LLC values. */
|
|
static struct eproto llc_db[] = {
|
|
{ "iso", LLCSAP_ISONS },
|
|
{ "stp", LLCSAP_8021D },
|
|
{ "ipx", LLCSAP_IPX },
|
|
{ "netbeui", LLCSAP_NETBEUI },
|
|
{ (char *)0, 0 }
|
|
};
|
|
|
|
int
|
|
pcap_nametollc(const char *s)
|
|
{
|
|
struct eproto *p = llc_db;
|
|
|
|
while (p->s != 0) {
|
|
if (strcmp(p->s, s) == 0)
|
|
return p->p;
|
|
p += 1;
|
|
}
|
|
return PROTO_UNDEF;
|
|
}
|
|
|
|
/* Hex digit to 8-bit unsigned integer. */
|
|
static inline u_char
|
|
xdtoi(u_char c)
|
|
{
|
|
if (c >= '0' && c <= '9')
|
|
return (u_char)(c - '0');
|
|
else if (c >= 'a' && c <= 'f')
|
|
return (u_char)(c - 'a' + 10);
|
|
else
|
|
return (u_char)(c - 'A' + 10);
|
|
}
|
|
|
|
int
|
|
__pcap_atoin(const char *s, bpf_u_int32 *addr)
|
|
{
|
|
u_int n;
|
|
int len;
|
|
|
|
*addr = 0;
|
|
len = 0;
|
|
for (;;) {
|
|
n = 0;
|
|
while (*s && *s != '.') {
|
|
if (n > 25) {
|
|
/* The result will be > 255 */
|
|
return -1;
|
|
}
|
|
n = n * 10 + *s++ - '0';
|
|
}
|
|
if (n > 255)
|
|
return -1;
|
|
*addr <<= 8;
|
|
*addr |= n & 0xff;
|
|
len += 8;
|
|
if (*s == '\0')
|
|
return len;
|
|
++s;
|
|
}
|
|
/* NOTREACHED */
|
|
}
|
|
|
|
int
|
|
__pcap_atodn(const char *s, bpf_u_int32 *addr)
|
|
{
|
|
#define AREASHIFT 10
|
|
#define AREAMASK 0176000
|
|
#define NODEMASK 01777
|
|
|
|
u_int node, area;
|
|
|
|
if (sscanf(s, "%d.%d", &area, &node) != 2)
|
|
return(0);
|
|
|
|
*addr = (area << AREASHIFT) & AREAMASK;
|
|
*addr |= (node & NODEMASK);
|
|
|
|
return(32);
|
|
}
|
|
|
|
/*
|
|
* Convert 's', which can have the one of the forms:
|
|
*
|
|
* "xx:xx:xx:xx:xx:xx"
|
|
* "xx.xx.xx.xx.xx.xx"
|
|
* "xx-xx-xx-xx-xx-xx"
|
|
* "xxxx.xxxx.xxxx"
|
|
* "xxxxxxxxxxxx"
|
|
*
|
|
* (or various mixes of ':', '.', and '-') into a new
|
|
* ethernet address. Assumes 's' is well formed.
|
|
*/
|
|
u_char *
|
|
pcap_ether_aton(const char *s)
|
|
{
|
|
register u_char *ep, *e;
|
|
register u_char d;
|
|
|
|
e = ep = (u_char *)malloc(6);
|
|
if (e == NULL)
|
|
return (NULL);
|
|
|
|
while (*s) {
|
|
if (*s == ':' || *s == '.' || *s == '-')
|
|
s += 1;
|
|
d = xdtoi(*s++);
|
|
if (PCAP_ISXDIGIT(*s)) {
|
|
d <<= 4;
|
|
d |= xdtoi(*s++);
|
|
}
|
|
*ep++ = d;
|
|
}
|
|
|
|
return (e);
|
|
}
|
|
|
|
#ifndef HAVE_ETHER_HOSTTON
|
|
/*
|
|
* Roll our own.
|
|
* XXX - not thread-safe, because pcap_next_etherent() isn't thread-
|
|
* safe! Needs a mutex or a thread-safe pcap_next_etherent().
|
|
*/
|
|
u_char *
|
|
pcap_ether_hostton(const char *name)
|
|
{
|
|
register struct pcap_etherent *ep;
|
|
register u_char *ap;
|
|
static FILE *fp = NULL;
|
|
static int init = 0;
|
|
|
|
if (!init) {
|
|
fp = fopen(PCAP_ETHERS_FILE, "r");
|
|
++init;
|
|
if (fp == NULL)
|
|
return (NULL);
|
|
} else if (fp == NULL)
|
|
return (NULL);
|
|
else
|
|
rewind(fp);
|
|
|
|
while ((ep = pcap_next_etherent(fp)) != NULL) {
|
|
if (strcmp(ep->name, name) == 0) {
|
|
ap = (u_char *)malloc(6);
|
|
if (ap != NULL) {
|
|
memcpy(ap, ep->addr, 6);
|
|
return (ap);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
return (NULL);
|
|
}
|
|
#else
|
|
/*
|
|
* Use the OS-supplied routine.
|
|
* This *should* be thread-safe; the API doesn't have a static buffer.
|
|
*/
|
|
u_char *
|
|
pcap_ether_hostton(const char *name)
|
|
{
|
|
register u_char *ap;
|
|
u_char a[6];
|
|
|
|
ap = NULL;
|
|
if (ether_hostton(name, (struct ether_addr *)a) == 0) {
|
|
ap = (u_char *)malloc(6);
|
|
if (ap != NULL)
|
|
memcpy((char *)ap, (char *)a, 6);
|
|
}
|
|
return (ap);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* XXX - not guaranteed to be thread-safe!
|
|
*/
|
|
int
|
|
#ifdef DECNETLIB
|
|
__pcap_nametodnaddr(const char *name, u_short *res)
|
|
{
|
|
struct nodeent *getnodebyname();
|
|
struct nodeent *nep;
|
|
|
|
nep = getnodebyname(name);
|
|
if (nep == ((struct nodeent *)0))
|
|
return(0);
|
|
|
|
memcpy((char *)res, (char *)nep->n_addr, sizeof(unsigned short));
|
|
return(1);
|
|
#else
|
|
__pcap_nametodnaddr(const char *name _U_, u_short *res _U_)
|
|
{
|
|
return(0);
|
|
#endif
|
|
}
|