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75 lines
2.3 KiB
C
75 lines
2.3 KiB
C
/*
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* Copyright (c) 1994, 1995, 1996
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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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#ifndef lint
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static const char rcsid[] =
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"@(#) $Header: /tcpdump/master/libpcap/pcap-null.c,v 1.13 2000/10/28 00:01:29 guy Exp $ (LBL)";
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#endif
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <sys/param.h> /* optionally get BSD define */
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#include <string.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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#include "pcap-int.h"
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static char nosup[] = "live packet capture not supported on this system";
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int
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pcap_stats(pcap_t *p, struct pcap_stat *ps)
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{
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(void)snprintf(p->errbuf, sizeof(p->errbuf), "pcap_stats: %s", nosup);
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return (-1);
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}
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int
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pcap_read(pcap_t *p, int cnt, pcap_handler callback, u_char *user)
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{
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(void)snprintf(p->errbuf, sizeof(p->errbuf), "pcap_read: %s", nosup);
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return (-1);
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}
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pcap_t *
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pcap_open_live(char *device, int snaplen, int promisc, int to_ms, char *ebuf)
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{
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(void)strlcpy(ebuf, nosup, PCAP_ERRBUF_SIZE);
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return (NULL);
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}
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int
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pcap_setfilter(pcap_t *p, struct bpf_program *fp)
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{
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if (p->sf.rfile == NULL) {
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(void)snprintf(p->errbuf, sizeof(p->errbuf),
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"pcap_setfilter: %s", nosup);
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return (-1);
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}
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if (install_bpf_program(p, fp) < 0)
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return (-1);
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return (0);
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}
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