Merge libpcap version 0.4

PR:		bin/7877

contrib/libpcap/gencode.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996
+ * Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998
  *	The Regents of the University of California.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -20,7 +20,7 @@
  */
 #ifndef lint
 static const char rcsid[] =
-    "@(#) $Header: gencode.c,v 1.91 96/12/11 19:10:23 leres Exp $ (LBL)";
+    "@(#) $Header: gencode.c,v 1.94 98/07/12 13:06:49 leres Exp $ (LBL)";
 #endif
 
 #include <sys/types.h>
@@ -52,6 +52,7 @@ struct rtentry;
 #include "ethertype.h"
 #include "nlpid.h"
 #include "gencode.h"
+#include "ppp.h"
 #include <pcap-namedb.h>
 
 #include "gnuc.h"
@@ -475,6 +476,13 @@ init_linktype(type)
 		off_nl = 16;
 		return;
 
+	case DLT_SLIP_BSDOS:
+		/* XXX this may be the same as the DLT_PPP_BSDOS case */
+		off_linktype = -1;
+		/* XXX end */
+		off_nl = 24;
+		return;
+
 	case DLT_NULL:
 		off_linktype = 0;
 		off_nl = 4;
@@ -485,6 +493,11 @@ init_linktype(type)
 		off_nl = 4;
 		return;
 
+	case DLT_PPP_BSDOS:
+		off_linktype = 5;
+		off_nl = 24;
+		return;
+
 	case DLT_FDDI:
 		/*
 		 * FDDI doesn't really have a link-level type field.
@@ -553,8 +566,10 @@ gen_false()
 
 static struct block *
 gen_linktype(proto)
-	int proto;
+	register int proto;
 {
+	struct block *b0, *b1;
+
 	/* If we're not using encapsulation and checking for IP, we're done */
 	if (off_linktype == -1 && proto == ETHERTYPE_IP)
 		return gen_true();
@@ -566,7 +581,32 @@ gen_linktype(proto)
 
 	case DLT_PPP:
 		if (proto == ETHERTYPE_IP)
-			proto = 0x0021;		/* XXX - need ppp.h defs */
+			proto = PPP_IP;			/* XXX was 0x21 */
+		break;
+
+	case DLT_PPP_BSDOS:
+		switch (proto) {
+
+		case ETHERTYPE_IP:
+			b0 = gen_cmp(off_linktype, BPF_H, PPP_IP);
+			b1 = gen_cmp(off_linktype, BPF_H, PPP_VJC);
+			gen_or(b0, b1);
+			b0 = gen_cmp(off_linktype, BPF_H, PPP_VJNC);
+			gen_or(b1, b0);
+			return b0;
+
+		case ETHERTYPE_DN:
+			proto = PPP_DECNET;
+			break;
+
+		case ETHERTYPE_ATALK:
+			proto = PPP_APPLE;
+			break;
+
+		case ETHERTYPE_NS:
+			proto = PPP_NS;
+			break;
+		}
 		break;
 
 	case DLT_NULL:
@@ -1374,11 +1414,17 @@ gen_mcode(s1, s2, masklen, q)
 		mlen = __pcap_atoin(s2, &m);
 		/* Promote short ipaddr */
 		m <<= 32 - mlen;
+		if ((n & ~m) != 0)
+			bpf_error("non-network bits set in \"%s mask %s\"",
+			    s1, s2);
 	} else {
 		/* Convert mask len to mask */
 		if (masklen > 32)
 			bpf_error("mask length must be <= 32");
 		m = 0xffffffff << (32 - masklen);
+		if ((n & ~m) != 0)
+			bpf_error("non-network bits set in \"%s/%d\"",
+			    s1, masklen);
 	}
 
 	switch (q.addr) {

contrib/libpcap/nametoaddr.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996
+ * Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998
  *	The Regents of the University of California.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -24,7 +24,7 @@
 
 #ifndef lint
 static const char rcsid[] =
-    "@(#) $Header: nametoaddr.c,v 1.45 96/10/17 23:26:53 leres Exp $ (LBL)";
+    "@(#) $Header: nametoaddr.c,v 1.48 98/07/12 13:15:36 leres Exp $ (LBL)";
 #endif
 
 #include <sys/param.h>
@@ -345,7 +345,7 @@ pcap_ether_hostton(const char *name)
 	if (ether_hostton((char *)name, (struct ether_addr *)a) == 0) {
 		ap = (u_char *)malloc(6);
 		if (ap != NULL)
-			memcpy(ap, a, 6);
+			memcpy((char *)ap, (char *)a, 6);
 	}
 	return (ap);
 }

contrib/libpcap/pcap.3

@@ -1,4 +1,4 @@
-.\" Copyright (c) 1994, 1996
+.\" Copyright (c) 1994, 1996, 1997
 .\"	The Regents of the University of California.  All rights reserved.
 .\"
 .\" Redistribution and use in source and binary forms, with or without
@@ -19,7 +19,7 @@
 .\"
 .\" $Id$
 .\"
-.TH PCAP 3  "18 August 1996"
+.TH PCAP 3  "24 June 1998"
 .SH NAME
 pcap \- Packet Capture library
 .SH SYNOPSIS
@@ -39,9 +39,9 @@ pcap_dumper_t *pcap_dump_open(pcap_t *p, char *fname)
 .ft B
 char errbuf[PCAP_ERRBUF_SIZE];
 char *pcap_lookupdev(char *errbuf)
-int pcap_lookupnet(char *device, u_long *netp,
+int pcap_lookupnet(char *device, bpf_u_int32 *netp,
 .ti +8
-u_long *maskp, char *errbuf)
+bpf_u_int32 *maskp, char *errbuf)
 .ft
 .LP
 .ft B
@@ -59,7 +59,7 @@ u_char *sp)
 .ft B
 int pcap_compile(pcap_t *p, struct bpf_program *fp,
 .ti +8
-char *str, int optimize, u_long netmask)
+char *str, int optimize, bpf_u_int32 netmask)
 int pcap_setfilter(pcap_t *p, struct bpf_program *fp)
 .ft
 .LP
@@ -100,6 +100,10 @@ at packets on the network.
 is a string that specifies the network device to open.
 .I snaplen
 specifies the maximum number of bytes to capture.
+.I promisc
+specifies if the interface is to be put into promiscuous mode.
+(Note that even if this parameter is false, the interface
+could well be in promiscuous mode for some other reason.)
 .I to_ms
 specifies the read timeout in milliseconds.
 .I ebuf
@@ -165,7 +169,7 @@ Both
 and
 .I maskp
 are
-.I u_long
+.I bpf_u_int32
 pointers.
 A return of -1 indicates an error in which case
 .I errbuf
@@ -178,9 +182,10 @@ specifies the maximum number of packets to process before returning. A
 .I cnt
 of -1 processes all the packets received in one buffer. A
 .I cnt
-of 0 processes all packets until an error occurs (or
+of 0 processes all packets until an error occurs,
 .B EOF
-is reached).
+is reached, or the read times out (when doing live reads and a non-zero
+read timeout is specified).
 .I callback
 specifies a routine to be called with three arguments:
 a
@@ -190,7 +195,9 @@ pointer which is passed in from
 a pointer to the
 .I pcap_pkthdr
 struct (which precede the actual network headers and data),
-and a length. The number of packets read is returned.
+and a
+.I u_char
+pointer to the packet data. The number of packets read is returned.
 Zero is returned when
 .B EOF
 is reached in a ``savefile.'' A return of -1 indicates
@@ -221,12 +228,16 @@ controls whether optimization on the resulting code is performed.
 specifies the netmask of the local net.
 .PP
 .B pcap_setfilter()
-is used to specify the a filter program.
+is used to specify a filter program.
 .I fp
 is a pointer to an array of
 .I bpf_program
 struct, usually the result of a call to
 .BR pcap_compile() .
+.B \-1
+is returned on failure;
+.B 0
+is returned on success.
 .PP
 .B pcap_loop()
 is similar to
@@ -234,6 +245,15 @@ is similar to
 except it keeps reading packets until
 .I cnt
 packets are processed or an error occurs.
+It does
+.B not
+return when live read timeouts occur.
+Rather, specifying a non-zero read timeout to
+.B pcap_open_live()
+and then calling
+.B pcap_dispatch()
+allows the reception and processing of any packets that arrive when the
+timeout occurs.
 A negative
 .I cnt
 causes
@@ -263,7 +283,7 @@ returns the major number of the version of the pcap used to write the
 savefile.
 .PP
 .B pcap_minor_version()
-returns the major number of the version of the pcap used to write the
+returns the minor number of the version of the pcap used to write the
 savefile.
 .PP
 .B pcap_file()

contrib/libpcap/pcap.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1993, 1994, 1995, 1996
+ * Copyright (c) 1993, 1994, 1995, 1996, 1997
  *	The Regents of the University of California.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -30,7 +30,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * @(#) $Header: pcap.h,v 1.20 96/07/12 19:24:15 leres Exp $ (LBL)
+ * @(#) $Header: pcap.h,v 1.21 97/10/15 21:59:13 leres Exp $ (LBL)
  */
 
 #ifndef lib_pcap_h
@@ -107,7 +107,7 @@ typedef void (*pcap_handler)(u_char *, const struct pcap_pkthdr *,
 char	*pcap_lookupdev(char *);
 int	pcap_lookupnet(char *, bpf_u_int32 *, bpf_u_int32 *, char *);
 pcap_t	*pcap_open_live(char *, int, int, int, char *);
-pcap_t	*pcap_open_offline(char *, char *);
+pcap_t	*pcap_open_offline(const char *, char *);
 void	pcap_close(pcap_t *);
 int	pcap_loop(pcap_t *, int, pcap_handler, u_char *);
 int	pcap_dispatch(pcap_t *, int, pcap_handler, u_char *);
@@ -132,7 +132,7 @@ int	pcap_minor_version(pcap_t *);
 FILE	*pcap_file(pcap_t *);
 int	pcap_fileno(pcap_t *);
 
-pcap_dumper_t *pcap_dump_open(pcap_t *, char *);
+pcap_dumper_t *pcap_dump_open(pcap_t *, const char *);
 void	pcap_dump_close(pcap_dumper_t *);
 void	pcap_dump(u_char *, const struct pcap_pkthdr *, const u_char *);
 

contrib/libpcap/scanner.l

@@ -1,6 +1,6 @@
 %{
 /*
- * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996
+ * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
  *	The Regents of the University of California.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -22,7 +22,7 @@
 
 #ifndef lint
 static const char rcsid[] =
-    "@(#) $Header: scanner.l,v 1.55 96/09/27 22:34:45 leres Exp $ (LBL)";
+    "@(#) $Header: scanner.l,v 1.56 97/07/21 13:31:50 leres Exp $ (LBL)";
 #endif
 
 #include <sys/types.h>
@@ -139,14 +139,15 @@ outbound	return OUTBOUND;
 ">>"			return RSH;
 {N}			{ yylval.i = stoi((char *)yytext); return NUM; }
 ({N}\.{N})|({N}\.{N}\.{N})|({N}\.{N}\.{N}\.{N})	{
-			yylval.s = sdup((char *)yytext); return HID;
+			yylval.s = sdup((char *)yytext); return HID; }
-}
 {B}:{B}:{B}:{B}:{B}:{B} { yylval.e = pcap_ether_aton((char *)yytext);
 			  return EID; }
 {B}:+({B}:+)+		{ bpf_error("bogus ethernet address %s", yytext); }
-[A-Za-z][-_.A-Za-z0-9]*	{ yylval.s = sdup((char *)yytext); return ID; }
+[A-Za-z0-9][-_.A-Za-z0-9]*[.A-Za-z0-9] {
+			 yylval.s = sdup((char *)yytext); return ID; }
 "\\"[^ !()\n\t]+	{ yylval.s = sdup((char *)yytext + 1); return ID; }
-[^ \[\]\t\n\-_.A-Za-z0-9!<>()&|=]+    { bpf_error("illegal token: %s\n", yytext); }
+[^ \[\]\t\n\-_.A-Za-z0-9!<>()&|=]+i {
+			bpf_error("illegal token: %s\n", yytext); }
 .			{ bpf_error("illegal char '%c'", *yytext); }
 %%
 void