1 /* 2 * Copyright (c) 1994, 1995, 1996 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 #ifndef lint 22 static const char rcsid[] = 23 "@(#) $Header: /tcpdump/master/libpcap/pcap-null.c,v 1.13 2000/10/28 00:01:29 guy Exp $ (LBL)"; 24 #endif 25 26 #ifdef HAVE_CONFIG_H 27 #include "config.h" 28 #endif 29 30 #include <sys/param.h> /* optionally get BSD define */ 31 32 #include <string.h> 33 34 #ifdef HAVE_OS_PROTO_H 35 #include "os-proto.h" 36 #endif 37 38 #include "pcap-int.h" 39 40 static char nosup[] = "live packet capture not supported on this system"; 41 42 int 43 pcap_stats(pcap_t *p, struct pcap_stat *ps) 44 { 45 (void)snprintf(p->errbuf, sizeof(p->errbuf), "pcap_stats: %s", nosup); 46 return (-1); 47 } 48 49 int 50 pcap_read(pcap_t *p, int cnt, pcap_handler callback, u_char *user) 51 { 52 (void)snprintf(p->errbuf, sizeof(p->errbuf), "pcap_read: %s", nosup); 53 return (-1); 54 } 55 56 pcap_t * 57 pcap_open_live(char *device, int snaplen, int promisc, int to_ms, char *ebuf) 58 { 59 (void)strlcpy(ebuf, nosup, PCAP_ERRBUF_SIZE); 60 return (NULL); 61 } 62 63 int 64 pcap_setfilter(pcap_t *p, struct bpf_program *fp) 65 { 66 if (p->sf.rfile == NULL) { 67 (void)snprintf(p->errbuf, sizeof(p->errbuf), 68 "pcap_setfilter: %s", nosup); 69 return (-1); 70 } 71 if (install_bpf_program(p, fp) < 0) 72 return (-1); 73 return (0); 74 } 75