Add a test program for the BPF code generator (not built by default, and
not installed; built with the version of libpcap in this directory, not the installed version).
This commit is contained in:
guy
parent
b2b10cab4e
commit
9415d150b0
1
FILES
1
FILES
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@ -39,6 +39,7 @@ fad-gifc.c
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fad-glifc.c
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fad-null.c
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fad-win32.c
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filtertest.c
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gencode.c
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gencode.h
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grammar.y
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@ -1,4 +1,4 @@
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@(#) $Header: /tcpdump/master/libpcap/INSTALL.txt,v 1.13 2005-06-20 21:27:08 guy Exp $ (LBL)
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@(#) $Header: /tcpdump/master/libpcap/INSTALL.txt,v 1.14 2005-08-08 17:44:25 guy Exp $ (LBL)
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To build libpcap, run "./configure" (a shell script). The configure
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script will determine your system attributes and generate an
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@ -333,6 +333,7 @@ fad-gifc.c - pcap_findalldevs() for systems with only SIOCGIFLIST
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fad-glifc.c - pcap_findalldevs() for systems with SIOCGLIFCONF
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fad-null.c - pcap_findalldevs() for systems without capture support
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fad-win32.c - pcap_findalldevs() for WinPcap
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filtertest.c - test program for BPF compiler
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gencode.c - BPF code generation routines
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gencode.h - BPF code generation definitions
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grammar.y - filter string grammar
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@ -17,7 +17,7 @@
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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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# @(#) $Header: /tcpdump/master/libpcap/Makefile.in,v 1.99 2003-12-15 01:35:03 guy Exp $ (LBL)
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# @(#) $Header: /tcpdump/master/libpcap/Makefile.in,v 1.100 2005-08-08 17:44:26 guy Exp $ (LBL)
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#
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# Various configurable paths (remember to edit Makefile.in, not Makefile)
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@ -121,7 +121,6 @@ libpcap.dylib: $(OBJ)
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-install_name $(libdir)/libpcap.0.dylib -compatibility_version `cat VERSION` \
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-current_version `cat VERSION`
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scanner.c: $(srcdir)/scanner.l
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@rm -f $@
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$(LEX) -t $< > $$$$.$@; mv $$$$.$@ $@
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@ -170,6 +169,9 @@ bpf_filter.c: $(srcdir)/bpf/net/bpf_filter.c
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bpf_filter.o: bpf_filter.c
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$(CC) $(CFLAGS) -c bpf_filter.c
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filtertest: filtertest.c libpcap.a
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$(CC) $(CFLAGS) -I. -L. -o filtertest filtertest.c libpcap.a
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install: libpcap.a
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[ -d $(DESTDIR)$(libdir) ] || \
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(mkdir -p $(DESTDIR)$(libdir); chmod 755 $(DESTDIR)$(libdir))
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@ -0,0 +1,296 @@
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/*
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* Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000
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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 copyright[] _U_ =
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"@(#) Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000\n\
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The Regents of the University of California. All rights reserved.\n";
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static const char rcsid[] _U_ =
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"@(#) $Header: /tcpdump/master/libpcap/filtertest.c,v 1.1 2005-08-08 17:44:26 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 <pcap.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdarg.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#ifndef HAVE___ATTRIBUTE__
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#define __attribute__(x)
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#endif
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static char *program_name;
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/* Forwards */
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static void usage(void) __attribute__((noreturn));
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static void error(const char *, ...)
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__attribute__((noreturn, format (printf, 1, 2)));
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extern int optind;
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extern int opterr;
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extern char *optarg;
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/*
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* On Windows, we need to open the file in binary mode, so that
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* we get all the bytes specified by the size we get from "fstat()".
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* On UNIX, that's not necessary. O_BINARY is defined on Windows;
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* we define it as 0 if it's not defined, so it does nothing.
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*/
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#ifndef O_BINARY
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#define O_BINARY 0
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#endif
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static char *
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read_infile(char *fname)
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{
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register int i, fd, cc;
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register char *cp;
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struct stat buf;
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fd = open(fname, O_RDONLY|O_BINARY);
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if (fd < 0)
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error("can't open %s: %s", fname, pcap_strerror(errno));
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if (fstat(fd, &buf) < 0)
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error("can't stat %s: %s", fname, pcap_strerror(errno));
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cp = malloc((u_int)buf.st_size + 1);
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if (cp == NULL)
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error("malloc(%d) for %s: %s", (u_int)buf.st_size + 1,
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fname, pcap_strerror(errno));
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cc = read(fd, cp, (u_int)buf.st_size);
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if (cc < 0)
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error("read %s: %s", fname, pcap_strerror(errno));
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if (cc != buf.st_size)
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error("short read %s (%d != %d)", fname, cc, (int)buf.st_size);
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close(fd);
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/* replace "# comment" with spaces */
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for (i = 0; i < cc; i++) {
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if (cp[i] == '#')
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while (i < cc && cp[i] != '\n')
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cp[i++] = ' ';
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}
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cp[cc] = '\0';
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return (cp);
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}
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/* VARARGS */
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static void
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error(const char *fmt, ...)
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{
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va_list ap;
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(void)fprintf(stderr, "%s: ", program_name);
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va_start(ap, fmt);
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(void)vfprintf(stderr, fmt, ap);
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va_end(ap);
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if (*fmt) {
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fmt += strlen(fmt);
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if (fmt[-1] != '\n')
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(void)fputc('\n', stderr);
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}
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exit(1);
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/* NOTREACHED */
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}
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/*
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* Copy arg vector into a new buffer, concatenating arguments with spaces.
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*/
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static char *
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copy_argv(register char **argv)
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{
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register char **p;
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register u_int len = 0;
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char *buf;
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char *src, *dst;
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p = argv;
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if (*p == 0)
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return 0;
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while (*p)
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len += strlen(*p++) + 1;
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buf = (char *)malloc(len);
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if (buf == NULL)
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error("copy_argv: malloc");
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p = argv;
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dst = buf;
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while ((src = *p++) != NULL) {
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while ((*dst++ = *src++) != '\0')
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;
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dst[-1] = ' ';
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}
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dst[-1] = '\0';
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return buf;
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}
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int
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main(int argc, char **argv)
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{
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char *cp;
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int op;
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int dflag;
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char *infile;
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int Oflag;
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long snaplen;
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int dlt;
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char *cmdbuf;
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pcap_t *pd;
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struct bpf_program fcode;
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#ifdef WIN32
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if(wsockinit() != 0) return 1;
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#endif /* WIN32 */
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dflag = 1;
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infile = NULL;
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Oflag = 1;
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snaplen = 68;
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if ((cp = strrchr(argv[0], '/')) != NULL)
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program_name = cp + 1;
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else
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program_name = argv[0];
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opterr = 0;
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while ((op = getopt(argc, argv, "dF:Os:")) != -1) {
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switch (op) {
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case 'd':
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++dflag;
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break;
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case 'F':
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infile = optarg;
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break;
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case 'O':
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Oflag = 0;
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break;
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case 's': {
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char *end;
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snaplen = strtol(optarg, &end, 0);
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if (optarg == end || *end != '\0'
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|| snaplen < 0 || snaplen > 65535)
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error("invalid snaplen %s", optarg);
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else if (snaplen == 0)
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snaplen = 65535;
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break;
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}
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default:
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usage();
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/* NOTREACHED */
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}
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}
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if (optind >= argc) {
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usage();
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/* NOTREACHED */
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}
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dlt = pcap_datalink_name_to_val(argv[optind]);
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if (dlt < 0)
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error("invalid data link type %s", argv[optind]);
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if (infile)
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cmdbuf = read_infile(infile);
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else
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cmdbuf = copy_argv(&argv[optind+1]);
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pd = pcap_open_dead(dlt, snaplen);
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if (pd == NULL)
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error("Can't open fake pcap_t");
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if (pcap_compile(pd, &fcode, cmdbuf, Oflag, 0) < 0)
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error("%s", pcap_geterr(pd));
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bpf_dump(&fcode, dflag);
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pcap_close(pd);
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exit(0);
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}
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#ifdef WIN32
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/*
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* XXX - there should really be libpcap calls to get the version
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* number as a string (the string would be generated from #defines
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* at run time, so that it's not generated from string constants
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* in the library, as, on many UNIX systems, those constants would
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* be statically linked into the application executable image, and
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* would thus reflect the version of libpcap on the system on
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* which the application was *linked*, not the system on which it's
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* *running*.
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*
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* That routine should be documented, unlike the "version[]"
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* string, so that UNIX vendors providing their own libpcaps
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* don't omit it (as a couple of vendors have...).
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*
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* Packet.dll should perhaps also export a routine to return the
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* version number of the Packet.dll code, to supply the
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* "Wpcap_version" information on Windows.
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*/
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char WDversion[]="current-cvs.tcpdump.org";
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char pcap_version[]="current-cvs.tcpdump.org";
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char Wpcap_version[]="3.1";
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#endif
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static void
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usage(void)
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{
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#ifndef HAVE_PCAP_LIB_VERSION
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#if defined(WIN32) || defined(HAVE_PCAP_VERSION)
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extern char pcap_version[];
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#else /* defined(WIN32) || defined(HAVE_PCAP_VERSION) */
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static char pcap_version[] = "unknown";
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#endif /* defined(WIN32) || defined(HAVE_PCAP_VERSION) */
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#endif /* HAVE_PCAP_LIB_VERSION */
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#ifdef HAVE_PCAP_LIB_VERSION
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(void)fprintf(stderr, "%s, with %s\n", program_name,
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pcap_lib_version());
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#else /* HAVE_PCAP_LIB_VERSION */
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#ifdef WIN32
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(void)fprintf(stderr, "%s, with WinPcap version %s, based on libpcap version %s\n",
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program_name, Wpcap_version, pcap_version);
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#else /* WIN32 */
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(void)fprintf(stderr, "%s, with libpcap version %s\n", program_name,
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pcap_version);
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#endif /* WIN32 */
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#endif /* HAVE_PCAP_LIB_VERSION */
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(void)fprintf(stderr,
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"Usage: %s [-dO] [ -F file ] [ -s snaplen ] dlt [ expression ]\n",
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program_name);
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exit(1);
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}
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