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Merge libpcap version 0.4
PR: bin/7877
This commit is contained in:
Bill Fenner
parent
4e4869f856
commit
dfd1ee14ff
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=39294
@ -1,5 +1,5 @@
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/*
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* Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996
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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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@ -20,7 +20,7 @@
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*/
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#ifndef lint
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static const char rcsid[] =
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"@(#) $Header: gencode.c,v 1.91 96/12/11 19:10:23 leres Exp $ (LBL)";
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"@(#) $Header: gencode.c,v 1.94 98/07/12 13:06:49 leres Exp $ (LBL)";
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#endif
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#include <sys/types.h>
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@ -52,6 +52,7 @@ struct rtentry;
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#include "ethertype.h"
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#include "nlpid.h"
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#include "gencode.h"
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#include "ppp.h"
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#include <pcap-namedb.h>
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#include "gnuc.h"
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@ -475,6 +476,13 @@ init_linktype(type)
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off_nl = 16;
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return;
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case DLT_SLIP_BSDOS:
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/* XXX this may be the same as the DLT_PPP_BSDOS case */
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off_linktype = -1;
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/* XXX end */
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off_nl = 24;
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return;
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case DLT_NULL:
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off_linktype = 0;
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off_nl = 4;
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@ -485,6 +493,11 @@ init_linktype(type)
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off_nl = 4;
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return;
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case DLT_PPP_BSDOS:
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off_linktype = 5;
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off_nl = 24;
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return;
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case DLT_FDDI:
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/*
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* FDDI doesn't really have a link-level type field.
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@ -553,8 +566,10 @@ gen_false()
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static struct block *
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gen_linktype(proto)
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int proto;
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register int proto;
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{
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struct block *b0, *b1;
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/* If we're not using encapsulation and checking for IP, we're done */
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if (off_linktype == -1 && proto == ETHERTYPE_IP)
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return gen_true();
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@ -566,7 +581,32 @@ gen_linktype(proto)
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case DLT_PPP:
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if (proto == ETHERTYPE_IP)
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proto = 0x0021; /* XXX - need ppp.h defs */
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proto = PPP_IP; /* XXX was 0x21 */
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break;
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case DLT_PPP_BSDOS:
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switch (proto) {
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case ETHERTYPE_IP:
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b0 = gen_cmp(off_linktype, BPF_H, PPP_IP);
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b1 = gen_cmp(off_linktype, BPF_H, PPP_VJC);
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gen_or(b0, b1);
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b0 = gen_cmp(off_linktype, BPF_H, PPP_VJNC);
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gen_or(b1, b0);
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return b0;
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case ETHERTYPE_DN:
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proto = PPP_DECNET;
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break;
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case ETHERTYPE_ATALK:
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proto = PPP_APPLE;
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break;
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case ETHERTYPE_NS:
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proto = PPP_NS;
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break;
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}
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break;
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case DLT_NULL:
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@ -1374,11 +1414,17 @@ gen_mcode(s1, s2, masklen, q)
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mlen = __pcap_atoin(s2, &m);
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/* Promote short ipaddr */
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m <<= 32 - mlen;
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if ((n & ~m) != 0)
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bpf_error("non-network bits set in \"%s mask %s\"",
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s1, s2);
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} else {
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/* Convert mask len to mask */
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if (masklen > 32)
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bpf_error("mask length must be <= 32");
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m = 0xffffffff << (32 - masklen);
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if ((n & ~m) != 0)
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bpf_error("non-network bits set in \"%s/%d\"",
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s1, masklen);
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}
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switch (q.addr) {
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@ -1,5 +1,5 @@
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/*
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* Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996
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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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@ -24,7 +24,7 @@
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#ifndef lint
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static const char rcsid[] =
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"@(#) $Header: nametoaddr.c,v 1.45 96/10/17 23:26:53 leres Exp $ (LBL)";
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"@(#) $Header: nametoaddr.c,v 1.48 98/07/12 13:15:36 leres Exp $ (LBL)";
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#endif
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#include <sys/param.h>
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@ -345,7 +345,7 @@ pcap_ether_hostton(const char *name)
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if (ether_hostton((char *)name, (struct ether_addr *)a) == 0) {
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ap = (u_char *)malloc(6);
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if (ap != NULL)
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memcpy(ap, a, 6);
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memcpy((char *)ap, (char *)a, 6);
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}
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return (ap);
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}
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@ -1,4 +1,4 @@
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.\" Copyright (c) 1994, 1996
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.\" Copyright (c) 1994, 1996, 1997
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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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@ -19,7 +19,7 @@
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.\"
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.\" $Id$
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.\"
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.TH PCAP 3 "18 August 1996"
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.TH PCAP 3 "24 June 1998"
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.SH NAME
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pcap \- Packet Capture library
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.SH SYNOPSIS
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@ -39,9 +39,9 @@ pcap_dumper_t *pcap_dump_open(pcap_t *p, char *fname)
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.ft B
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char errbuf[PCAP_ERRBUF_SIZE];
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char *pcap_lookupdev(char *errbuf)
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int pcap_lookupnet(char *device, u_long *netp,
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int pcap_lookupnet(char *device, bpf_u_int32 *netp,
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.ti +8
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u_long *maskp, char *errbuf)
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bpf_u_int32 *maskp, char *errbuf)
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.ft
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.LP
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.ft B
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@ -59,7 +59,7 @@ u_char *sp)
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.ft B
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int pcap_compile(pcap_t *p, struct bpf_program *fp,
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.ti +8
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char *str, int optimize, u_long netmask)
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char *str, int optimize, bpf_u_int32 netmask)
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int pcap_setfilter(pcap_t *p, struct bpf_program *fp)
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.ft
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.LP
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@ -100,6 +100,10 @@ at packets on the network.
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is a string that specifies the network device to open.
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.I snaplen
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specifies the maximum number of bytes to capture.
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.I promisc
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specifies if the interface is to be put into promiscuous mode.
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(Note that even if this parameter is false, the interface
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could well be in promiscuous mode for some other reason.)
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.I to_ms
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specifies the read timeout in milliseconds.
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.I ebuf
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@ -165,7 +169,7 @@ Both
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and
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.I maskp
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are
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.I u_long
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.I bpf_u_int32
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pointers.
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A return of -1 indicates an error in which case
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.I errbuf
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@ -178,9 +182,10 @@ specifies the maximum number of packets to process before returning. A
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.I cnt
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of -1 processes all the packets received in one buffer. A
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.I cnt
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of 0 processes all packets until an error occurs (or
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of 0 processes all packets until an error occurs,
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.B EOF
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is reached).
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is reached, or the read times out (when doing live reads and a non-zero
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read timeout is specified).
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.I callback
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specifies a routine to be called with three arguments:
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a
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@ -190,7 +195,9 @@ pointer which is passed in from
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a pointer to the
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.I pcap_pkthdr
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struct (which precede the actual network headers and data),
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and a length. The number of packets read is returned.
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and a
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.I u_char
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pointer to the packet data. The number of packets read is returned.
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Zero is returned when
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.B EOF
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is reached in a ``savefile.'' A return of -1 indicates
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@ -221,12 +228,16 @@ controls whether optimization on the resulting code is performed.
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specifies the netmask of the local net.
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.PP
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.B pcap_setfilter()
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is used to specify the a filter program.
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is used to specify a filter program.
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.I fp
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is a pointer to an array of
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.I bpf_program
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struct, usually the result of a call to
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.BR pcap_compile() .
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.B \-1
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is returned on failure;
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.B 0
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is returned on success.
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.PP
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.B pcap_loop()
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is similar to
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@ -234,6 +245,15 @@ is similar to
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except it keeps reading packets until
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.I cnt
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packets are processed or an error occurs.
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It does
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.B not
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return when live read timeouts occur.
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Rather, specifying a non-zero read timeout to
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.B pcap_open_live()
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and then calling
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.B pcap_dispatch()
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allows the reception and processing of any packets that arrive when the
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timeout occurs.
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A negative
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.I cnt
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causes
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@ -263,7 +283,7 @@ returns the major number of the version of the pcap used to write the
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savefile.
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.PP
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.B pcap_minor_version()
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returns the major number of the version of the pcap used to write the
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returns the minor number of the version of the pcap used to write the
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savefile.
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.PP
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.B pcap_file()
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@ -1,5 +1,5 @@
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/*
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* Copyright (c) 1993, 1994, 1995, 1996
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* Copyright (c) 1993, 1994, 1995, 1996, 1997
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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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@ -30,7 +30,7 @@
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#) $Header: pcap.h,v 1.20 96/07/12 19:24:15 leres Exp $ (LBL)
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* @(#) $Header: pcap.h,v 1.21 97/10/15 21:59:13 leres Exp $ (LBL)
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*/
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#ifndef lib_pcap_h
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@ -107,7 +107,7 @@ typedef void (*pcap_handler)(u_char *, const struct pcap_pkthdr *,
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char *pcap_lookupdev(char *);
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int pcap_lookupnet(char *, bpf_u_int32 *, bpf_u_int32 *, char *);
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pcap_t *pcap_open_live(char *, int, int, int, char *);
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pcap_t *pcap_open_offline(char *, char *);
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pcap_t *pcap_open_offline(const char *, char *);
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void pcap_close(pcap_t *);
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int pcap_loop(pcap_t *, int, pcap_handler, u_char *);
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int pcap_dispatch(pcap_t *, int, pcap_handler, u_char *);
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@ -132,7 +132,7 @@ int pcap_minor_version(pcap_t *);
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FILE *pcap_file(pcap_t *);
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int pcap_fileno(pcap_t *);
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pcap_dumper_t *pcap_dump_open(pcap_t *, char *);
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pcap_dumper_t *pcap_dump_open(pcap_t *, const char *);
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void pcap_dump_close(pcap_dumper_t *);
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void pcap_dump(u_char *, const struct pcap_pkthdr *, const u_char *);
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@ -1,6 +1,6 @@
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%{
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/*
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* Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996
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* Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
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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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@ -22,7 +22,7 @@
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#ifndef lint
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static const char rcsid[] =
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"@(#) $Header: scanner.l,v 1.55 96/09/27 22:34:45 leres Exp $ (LBL)";
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"@(#) $Header: scanner.l,v 1.56 97/07/21 13:31:50 leres Exp $ (LBL)";
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#endif
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#include <sys/types.h>
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@ -139,14 +139,15 @@ outbound return OUTBOUND;
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">>" return RSH;
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{N} { yylval.i = stoi((char *)yytext); return NUM; }
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({N}\.{N})|({N}\.{N}\.{N})|({N}\.{N}\.{N}\.{N}) {
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yylval.s = sdup((char *)yytext); return HID;
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}
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yylval.s = sdup((char *)yytext); return HID; }
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{B}:{B}:{B}:{B}:{B}:{B} { yylval.e = pcap_ether_aton((char *)yytext);
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return EID; }
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{B}:+({B}:+)+ { bpf_error("bogus ethernet address %s", yytext); }
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[A-Za-z][-_.A-Za-z0-9]* { yylval.s = sdup((char *)yytext); return ID; }
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[A-Za-z0-9][-_.A-Za-z0-9]*[.A-Za-z0-9] {
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yylval.s = sdup((char *)yytext); return ID; }
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"\\"[^ !()\n\t]+ { yylval.s = sdup((char *)yytext + 1); return ID; }
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[^ \[\]\t\n\-_.A-Za-z0-9!<>()&|=]+ { bpf_error("illegal token: %s\n", yytext); }
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[^ \[\]\t\n\-_.A-Za-z0-9!<>()&|=]+i {
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bpf_error("illegal token: %s\n", yytext); }
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. { bpf_error("illegal char '%c'", *yytext); }
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%%
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void
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