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Diffstat (limited to 'test/filtertest.c')
| -rw-r--r-- | test/filtertest.c | 266 |
1 files changed, 266 insertions, 0 deletions
diff --git a/test/filtertest.c b/test/filtertest.c new file mode 100644 index 000000000000..a56d1e49e923 --- /dev/null +++ b/test/filtertest.c @@ -0,0 +1,266 @@ +/* + * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + */ + +#ifndef lint +static const char copyright[] _U_ = + "@(#) Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000\n\ +The Regents of the University of California. All rights reserved.\n"; +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/libpcap/filtertest.c,v 1.2 2005-08-08 17:50:13 guy Exp $ (LBL)"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <pcap.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <stdarg.h> +#include <unistd.h> +#include <fcntl.h> +#include <errno.h> +#include <arpa/inet.h> +#include <sys/types.h> +#include <sys/stat.h> + +#ifndef HAVE___ATTRIBUTE__ +#define __attribute__(x) +#endif + +static char *program_name; + +/* Forwards */ +static void usage(void) __attribute__((noreturn)); +static void error(const char *, ...) + __attribute__((noreturn, format (printf, 1, 2))); + +extern int optind; +extern int opterr; +extern char *optarg; + +/* + * On Windows, we need to open the file in binary mode, so that + * we get all the bytes specified by the size we get from "fstat()". + * On UNIX, that's not necessary. O_BINARY is defined on Windows; + * we define it as 0 if it's not defined, so it does nothing. + */ +#ifndef O_BINARY +#define O_BINARY 0 +#endif + +static char * +read_infile(char *fname) +{ + register int i, fd, cc; + register char *cp; + struct stat buf; + + fd = open(fname, O_RDONLY|O_BINARY); + if (fd < 0) + error("can't open %s: %s", fname, pcap_strerror(errno)); + + if (fstat(fd, &buf) < 0) + error("can't stat %s: %s", fname, pcap_strerror(errno)); + + cp = malloc((u_int)buf.st_size + 1); + if (cp == NULL) + error("malloc(%d) for %s: %s", (u_int)buf.st_size + 1, + fname, pcap_strerror(errno)); + cc = read(fd, cp, (u_int)buf.st_size); + if (cc < 0) + error("read %s: %s", fname, pcap_strerror(errno)); + if (cc != buf.st_size) + error("short read %s (%d != %d)", fname, cc, (int)buf.st_size); + + close(fd); + /* replace "# comment" with spaces */ + for (i = 0; i < cc; i++) { + if (cp[i] == '#') + while (i < cc && cp[i] != '\n') + cp[i++] = ' '; + } + cp[cc] = '\0'; + return (cp); +} + +/* VARARGS */ +static void +error(const char *fmt, ...) +{ + va_list ap; + + (void)fprintf(stderr, "%s: ", program_name); + va_start(ap, fmt); + (void)vfprintf(stderr, fmt, ap); + va_end(ap); + if (*fmt) { + fmt += strlen(fmt); + if (fmt[-1] != '\n') + (void)fputc('\n', stderr); + } + exit(1); + /* NOTREACHED */ +} + +/* + * Copy arg vector into a new buffer, concatenating arguments with spaces. + */ +static char * +copy_argv(register char **argv) +{ + register char **p; + register u_int len = 0; + char *buf; + char *src, *dst; + + p = argv; + if (*p == 0) + return 0; + + while (*p) + len += strlen(*p++) + 1; + + buf = (char *)malloc(len); + if (buf == NULL) + error("copy_argv: malloc"); + + p = argv; + dst = buf; + while ((src = *p++) != NULL) { + while ((*dst++ = *src++) != '\0') + ; + dst[-1] = ' '; + } + dst[-1] = '\0'; + + return buf; +} + +int +main(int argc, char **argv) +{ + char *cp; + int op; + int dflag; + char *infile; + int Oflag; + long snaplen; + int dlt; + bpf_u_int32 netmask = PCAP_NETMASK_UNKNOWN; + char *cmdbuf; + pcap_t *pd; + struct bpf_program fcode; + +#ifdef WIN32 + if(wsockinit() != 0) return 1; +#endif /* WIN32 */ + + dflag = 1; + infile = NULL; + Oflag = 1; + snaplen = 68; + + if ((cp = strrchr(argv[0], '/')) != NULL) + program_name = cp + 1; + else + program_name = argv[0]; + + opterr = 0; + while ((op = getopt(argc, argv, "dF:m:Os:")) != -1) { + switch (op) { + + case 'd': + ++dflag; + break; + + case 'F': + infile = optarg; + break; + + case 'O': + Oflag = 0; + break; + + case 'm': { + in_addr_t addr; + + addr = inet_addr(optarg); + if (addr == INADDR_NONE) + error("invalid netmask %s", optarg); + netmask = addr; + break; + } + + case 's': { + char *end; + + snaplen = strtol(optarg, &end, 0); + if (optarg == end || *end != '\0' + || snaplen < 0 || snaplen > 65535) + error("invalid snaplen %s", optarg); + else if (snaplen == 0) + snaplen = 65535; + break; + } + + default: + usage(); + /* NOTREACHED */ + } + } + + if (optind >= argc) { + usage(); + /* NOTREACHED */ + } + + dlt = pcap_datalink_name_to_val(argv[optind]); + if (dlt < 0) + error("invalid data link type %s", argv[optind]); + + if (infile) + cmdbuf = read_infile(infile); + else + cmdbuf = copy_argv(&argv[optind+1]); + + pd = pcap_open_dead(dlt, snaplen); + if (pd == NULL) + error("Can't open fake pcap_t"); + + if (pcap_compile(pd, &fcode, cmdbuf, Oflag, netmask) < 0) + error("%s", pcap_geterr(pd)); + bpf_dump(&fcode, dflag); + pcap_close(pd); + exit(0); +} + +static void +usage(void) +{ + (void)fprintf(stderr, "%s, with %s\n", program_name, + pcap_lib_version()); + (void)fprintf(stderr, + "Usage: %s [-dO] [ -F file ] [ -m netmask] [ -s snaplen ] dlt [ expression ]\n", + program_name); + exit(1); +} |