![Guy Harris](/assets/img/avatar_default.png)
of the pipe to be opened in the messages. Check whether strtol() succeeds. Map DLT_ values to a WTAP_ENCAP_ value regardless of whether it comes from linktype_name_to_val() or strtol(). Clean up indentation. svn path=/trunk/; revision=27075
1680 lines
46 KiB
C
1680 lines
46 KiB
C
/* rawshark.c
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* Rawshark - Raw field extractor by Gerald Combs <gerald@wireshark.org>
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* and Loris Degioanni <loris.degioanni@cacetech.com>
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* Based on TShark, by Gilbert Ramirez <gram@alumni.rice.edu> and Guy Harris
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* <guy@alum.mit.edu>.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/*
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* Rawshark does the following:
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* - Opens a specified file or named pipe
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* - Applies a specfied DLT or "decode as" encapsulation
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* - Reads frames prepended with a libpcap packet header.
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* - Prints a status line, followed by fields from a specified list.
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*/
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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 <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <ctype.h>
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#include <locale.h>
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#include <limits.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include <errno.h>
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#ifdef HAVE_FCNTL_H
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#include <fcntl.h>
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#endif
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#include <signal.h>
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#ifdef HAVE_SYS_STAT_H
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# include <sys/stat.h>
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#endif
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#ifdef NEED_STRERROR_H
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#include "strerror.h"
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#endif
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#ifdef NEED_GETOPT_H
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#include "getopt.h"
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#endif
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#include <glib.h>
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#include <epan/epan.h>
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#include <epan/filesystem.h>
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#include <wsutil/privileges.h>
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#include <wsutil/file_util.h>
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#include "globals.h"
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#include <epan/packet.h>
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#include "file.h"
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#include "disabled_protos.h"
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#include <epan/prefs.h>
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#include <epan/column.h>
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#include "print.h"
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#include <epan/addr_resolv.h>
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#include "util.h"
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#include "clopts_common.h"
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#include "cmdarg_err.h"
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#include "version_info.h"
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#include <epan/conversation.h>
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#include <epan/plugins.h>
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#include "register.h"
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#include "conditions.h"
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#include "capture_stop_conditions.h"
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#include "capture_ui_utils.h"
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#include <epan/epan_dissect.h>
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#include <epan/stat_cmd_args.h>
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#include <epan/timestamp.h>
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#include <wsutil/unicode-utils.h>
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#include "epan/column-utils.h"
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#include "epan/proto.h"
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#include <epan/tap.h>
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#include <wtap.h>
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#include <libpcap.h>
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#ifdef HAVE_LIBPCAP
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#include <pcap.h>
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#include <setjmp.h>
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#include "capture-pcap-util.h"
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#include "pcapio.h"
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#ifdef _WIN32
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#include "capture-wpcap.h"
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#include "capture_errs.h"
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#endif /* _WIN32 */
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#endif /* HAVE_LIBPCAP */
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#include "log.h"
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/*
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* This is the template for the decode as option; it is shared between the
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* various functions that output the usage for this parameter.
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*/
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static const gchar decode_as_arg_template[] = "<layer_type>==<selector>,<decode_as_protocol>";
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static nstime_t first_ts;
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static nstime_t prev_dis_ts;
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static nstime_t prev_cap_ts;
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static GString *comp_info_str, *runtime_info_str;
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/*
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* The way the packet decode is to be written.
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*/
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typedef enum {
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WRITE_TEXT, /* summary or detail text */
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WRITE_XML /* PDML or PSML */
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/* Add CSV and the like here */
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} output_action_e;
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static gboolean line_buffered;
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static guint32 cum_bytes = 0;
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static print_format_e print_format = PR_FMT_TEXT;
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/*
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* Standard secondary message for unexpected errors.
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*/
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static const char please_report[] =
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"Please report this to the Wireshark developers";
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cf_status_t raw_cf_open(capture_file *cf, const char *fname);
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static int load_cap_file(capture_file *cf);
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static gboolean process_packet(capture_file *cf, gint64 offset,
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const struct wtap_pkthdr *whdr, const guchar *pd);
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static void show_print_file_io_error(int err);
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static void open_failure_message(const char *filename, int err,
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gboolean for_writing);
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static void failure_message(const char *msg_format, va_list ap);
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static void read_failure_message(const char *filename, int err);
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static void protocolinfo_init(char *field);
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static gboolean parse_field_string_format(char *format);
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typedef enum {
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SF_NONE, /* No format (placeholder) */
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SF_NAME, /* %D Field name / description */
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SF_NUMVAL, /* %N Numeric value */
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SF_STRVAL /* %S String value */
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} string_fmt_e;
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typedef struct string_fmt_s {
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gchar *plain;
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string_fmt_e format; /* Valid if plain is NULL */
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} string_fmt_t;
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capture_file cfile;
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int n_rfilters;
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int n_rfcodes;
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dfilter_t *rfcodes[64];
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int n_rfieldfilters;
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dfilter_t *rfieldfcodes[64];
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int fd;
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int encap;
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GPtrArray *string_fmts;
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static void
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print_usage(gboolean print_ver)
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{
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FILE *output;
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if (print_ver) {
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output = stdout;
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fprintf(output,
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"Rawshark " VERSION "%s\n"
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"Dump and analyze network traffic.\n"
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"See http://www.wireshark.org for more information.\n"
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"\n"
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"%s",
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wireshark_svnversion, get_copyright_info());
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} else {
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output = stderr;
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}
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fprintf(output, "\n");
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fprintf(output, "Usage: rawshark [options] ...\n");
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fprintf(output, "\n");
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fprintf(output, "Input file:\n");
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fprintf(output, " -r <infile> set the pipe or file name to read from\n");
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fprintf(output, "\n");
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fprintf(output, "Processing:\n");
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fprintf(output, " -R <read filter> packet filter in Wireshark display filter syntax\n");
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fprintf(output, " -F <field> field to display\n");
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fprintf(output, " -n disable all name resolution (def: all enabled)\n");
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fprintf(output, " -N <name resolve flags> enable specific name resolution(s): \"mntC\"\n");
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fprintf(output, " -d <encap:dlt>|<proto:protoname>\n");
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fprintf(output, " packet encapsulation or protocol\n");
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/*fprintf(output, "\n");*/
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fprintf(output, "Output:\n");
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fprintf(output, " -S format string for fields (%%D - name, %%S - stringval, %%N numval\n");
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fprintf(output, " -t ad|a|r|d|dd|e output format of time stamps (def: r: rel. to first)\n");
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fprintf(output, " -l flush output after each packet\n");
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fprintf(output, "\n");
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fprintf(output, "Miscellaneous:\n");
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fprintf(output, " -h display this help and exit\n");
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fprintf(output, " -v display version info and exit\n");
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fprintf(output, " -o <name>:<value> ... override preference setting\n");
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}
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static void
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log_func_ignore (const gchar *log_domain _U_, GLogLevelFlags log_level _U_,
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const gchar *message _U_, gpointer user_data _U_)
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{
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}
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/**
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* Open a pipe for raw input. This is a stripped-down version of
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* pcap_loop.c:cap_pipe_open_live().
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* We check if "pipe_name" is "-" (stdin) or a FIFO, and open it.
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* @param pipe_name The name of the pipe or FIFO.
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* @return A POSIX file descriptor on success, or -1 on failure.
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*/
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static int
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raw_pipe_open(const char *pipe_name)
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{
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#ifndef _WIN32
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struct stat pipe_stat;
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#else
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char *pncopy, *pos;
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DWORD err;
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wchar_t *err_str;
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HANDLE hPipe = NULL;
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#endif
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int rfd;
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g_log(LOG_DOMAIN_CAPTURE_CHILD, G_LOG_LEVEL_DEBUG, "open_raw_pipe: %s", pipe_name);
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/*
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* XXX Rawshark blocks until we return
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*/
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if (strcmp(pipe_name, "-") == 0) {
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rfd = 0; /* read from stdin */
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#ifdef _WIN32
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/*
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* This is needed to set the stdin pipe into binary mode, otherwise
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* CR/LF are mangled...
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*/
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_setmode(0, _O_BINARY);
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#endif /* _WIN32 */
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} else {
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#ifndef _WIN32
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if (ws_stat(pipe_name, &pipe_stat) < 0) {
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fprintf(stderr, "rawshark: The pipe %s could not be checked: %s\n",
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pipe_name, strerror(errno));
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return -1;
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}
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if (! S_ISFIFO(pipe_stat.st_mode)) {
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if (S_ISCHR(pipe_stat.st_mode)) {
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/*
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* Assume the user specified an interface on a system where
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* interfaces are in /dev. Pretend we haven't seen it.
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*/
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} else
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{
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fprintf(stderr, "rawshark: \"%s\" is neither an interface nor a pipe\n",
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pipe_name);
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}
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return -1;
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}
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rfd = ws_open(pipe_name, O_RDONLY | O_NONBLOCK, 0000 /* no creation so don't matter */);
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if (rfd == -1) {
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fprintf(stderr, "rawshark: \"%s\" could not be opened: %s\n",
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pipe_name, strerror(errno));
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return -1;
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}
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#else /* _WIN32 */
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#define PIPE_STR "\\pipe\\"
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/* Under Windows, named pipes _must_ have the form
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* "\\<server>\pipe\<pipe_name>". <server> may be "." for localhost.
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*/
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pncopy = g_strdup(pipe_name);
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if (strstr(pncopy, "\\\\") == pncopy) {
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pos = strchr(pncopy + 3, '\\');
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if (pos && g_ascii_strncasecmp(pos, PIPE_STR, strlen(PIPE_STR)) != 0)
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pos = NULL;
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}
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g_free(pncopy);
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if (!pos) {
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fprintf(stderr, "rawshark: \"%s\" is neither an interface nor a pipe\n",
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pipe_name);
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return -1;
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}
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/* Wait for the pipe to appear */
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while (1) {
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hPipe = CreateFile(utf_8to16(pipe_name), GENERIC_READ, 0, NULL,
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OPEN_EXISTING, 0, NULL);
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if (hPipe != INVALID_HANDLE_VALUE)
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break;
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err = GetLastError();
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if (err != ERROR_PIPE_BUSY) {
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FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER,
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NULL, err, 0, (LPTSTR) &err_str, 0, NULL);
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fprintf(stderr, "rawshark: \"%s\" could not be opened: %s (error %d)\n",
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pipe_name, utf_16to8(err_str), err);
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LocalFree(err_str);
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return -1;
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}
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if (!WaitNamedPipe(utf_8to16(pipe_name), 30 * 1000)) {
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err = GetLastError();
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FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER,
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NULL, err, 0, (LPTSTR) &err_str, 0, NULL);
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fprintf(stderr, "rawshark: \"%s\" could not be waited for: %s (error %d)\n",
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pipe_name, utf_16to8(err_str), err);
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LocalFree(err_str);
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return -1;
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}
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}
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rfd = _open_osfhandle((long) hPipe, _O_RDONLY);
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if (rfd == -1) {
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fprintf(stderr, "rawshark: \"%s\" could not be opened: %s\n",
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pipe_name, strerror(errno));
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return -1;
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}
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#endif /* _WIN32 */
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}
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return rfd;
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}
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/**
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* Parse a link-type argument of the form "encap:<pcap dlt>" or
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* "proto:<proto name>". "Pcap dlt" must be a name conforming to
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* pcap_datalink_name_to_val() or an integer. "Proto name" must be
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* a protocol name, e.g. "http".
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*/
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static gboolean
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set_link_type(const char *lt_arg) {
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char *spec_ptr = strchr(lt_arg, ':');
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char *p;
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int dlt_val;
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long val;
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dissector_handle_t dhandle;
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GString *pref_str;
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if (!spec_ptr)
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return FALSE;
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spec_ptr++;
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if (strncmp(lt_arg, "encap:", strlen("encap:")) == 0) {
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dlt_val = linktype_name_to_val(spec_ptr);
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if (dlt_val == -1) {
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errno = 0;
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val = strtol(spec_ptr, &p, 10);
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if (p == spec_ptr || *p != '\0' || errno != 0 || val > INT_MAX) {
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return FALSE;
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}
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dlt_val = (int)val;
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}
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encap = wtap_pcap_encap_to_wtap_encap(dlt_val);
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if (encap == WTAP_ENCAP_UNKNOWN) {
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return FALSE;
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}
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return TRUE;
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} else if (strncmp(lt_arg, "proto:", strlen("proto:")) == 0) {
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dhandle = find_dissector(spec_ptr);
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if (dhandle) {
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encap = WTAP_ENCAP_USER0;
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pref_str = g_string_new("uat:user_dlts:");
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/* This must match the format used in the user_dlts file */
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g_string_append_printf(pref_str,
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"\"User 0 (DLT=147)\",\"%s\",\"0\",\"\",\"0\",\"\"",
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spec_ptr);
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if (prefs_set_pref(pref_str->str) != PREFS_SET_OK) {
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g_string_free(pref_str, TRUE);
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return FALSE;
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}
|
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g_string_free(pref_str, TRUE);
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return TRUE;
|
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}
|
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}
|
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return FALSE;
|
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}
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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 *init_progfile_dir_error;
|
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int opt, i;
|
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extern char *optarg;
|
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gboolean arg_error = FALSE;
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|
|
#ifdef _WIN32
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WSADATA wsaData;
|
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#endif /* _WIN32 */
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|
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char *gpf_path, *pf_path;
|
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char *gdp_path, *dp_path;
|
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int gpf_open_errno, gpf_read_errno;
|
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int pf_open_errno, pf_read_errno;
|
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int gdp_open_errno, gdp_read_errno;
|
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int dp_open_errno, dp_read_errno;
|
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int err;
|
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gchar *pipe_name = NULL;
|
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gchar *rfilters[64];
|
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e_prefs *prefs;
|
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char badopt;
|
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GLogLevelFlags log_flags;
|
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GPtrArray *disp_fields = g_ptr_array_new();
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guint fc;
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|
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#define OPTSTRING_INIT "d:F:hlnN:o:r:R:S:t:v"
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|
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static const char optstring[] = OPTSTRING_INIT;
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|
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/*
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* Get credential information for later use.
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*/
|
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get_credential_info();
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|
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/*
|
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* Clear the filters arrays
|
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*/
|
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memset(rfilters, 0, sizeof(rfilters));
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memset(rfcodes, 0, sizeof(rfcodes));
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n_rfilters = 0;
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n_rfcodes = 0;
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|
|
/*
|
|
* Initialize our string format
|
|
*/
|
|
string_fmts = g_ptr_array_new();
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|
|
/*
|
|
* Attempt to get the pathname of the executable file.
|
|
*/
|
|
init_progfile_dir_error = init_progfile_dir(argv[0]);
|
|
if (init_progfile_dir_error != NULL) {
|
|
fprintf(stderr, "rawshark: Can't get pathname of rawshark program: %s.\n",
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init_progfile_dir_error);
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}
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|
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/*
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* Get credential information for later use.
|
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*/
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get_credential_info();
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|
|
/* nothing more than the standard GLib handler, but without a warning */
|
|
log_flags =
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G_LOG_LEVEL_WARNING |
|
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G_LOG_LEVEL_MESSAGE |
|
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G_LOG_LEVEL_INFO |
|
|
G_LOG_LEVEL_DEBUG;
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|
|
g_log_set_handler(NULL,
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log_flags,
|
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log_func_ignore, NULL /* user_data */);
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|
g_log_set_handler(LOG_DOMAIN_CAPTURE_CHILD,
|
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log_flags,
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log_func_ignore, NULL /* user_data */);
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|
|
timestamp_set_type(TS_RELATIVE);
|
|
timestamp_set_precision(TS_PREC_AUTO);
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|
|
|
/* Register all dissectors; we must do this before checking for the
|
|
"-G" flag, as the "-G" flag dumps information registered by the
|
|
dissectors, and we must do it before we read the preferences, in
|
|
case any dissectors register preferences. */
|
|
epan_init(register_all_protocols, register_all_protocol_handoffs, NULL, NULL,
|
|
failure_message, open_failure_message, read_failure_message);
|
|
|
|
/* Now register the preferences for any non-dissector modules.
|
|
We must do that before we read the preferences as well. */
|
|
prefs_register_modules();
|
|
|
|
/* Set the C-language locale to the native environment. */
|
|
setlocale(LC_ALL, "");
|
|
|
|
prefs = read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
|
|
&pf_open_errno, &pf_read_errno, &pf_path);
|
|
if (gpf_path != NULL) {
|
|
if (gpf_open_errno != 0) {
|
|
cmdarg_err("Can't open global preferences file \"%s\": %s.",
|
|
pf_path, strerror(gpf_open_errno));
|
|
}
|
|
if (gpf_read_errno != 0) {
|
|
cmdarg_err("I/O error reading global preferences file \"%s\": %s.",
|
|
pf_path, strerror(gpf_read_errno));
|
|
}
|
|
}
|
|
if (pf_path != NULL) {
|
|
if (pf_open_errno != 0) {
|
|
cmdarg_err("Can't open your preferences file \"%s\": %s.", pf_path,
|
|
strerror(pf_open_errno));
|
|
}
|
|
if (pf_read_errno != 0) {
|
|
cmdarg_err("I/O error reading your preferences file \"%s\": %s.",
|
|
pf_path, strerror(pf_read_errno));
|
|
}
|
|
g_free(pf_path);
|
|
pf_path = NULL;
|
|
}
|
|
|
|
/* Set the name resolution code's flags from the preferences. */
|
|
g_resolv_flags = prefs->name_resolve;
|
|
|
|
/* Read the disabled protocols file. */
|
|
read_disabled_protos_list(&gdp_path, &gdp_open_errno, &gdp_read_errno,
|
|
&dp_path, &dp_open_errno, &dp_read_errno);
|
|
if (gdp_path != NULL) {
|
|
if (gdp_open_errno != 0) {
|
|
cmdarg_err("Could not open global disabled protocols file\n\"%s\": %s.",
|
|
gdp_path, strerror(gdp_open_errno));
|
|
}
|
|
if (gdp_read_errno != 0) {
|
|
cmdarg_err("I/O error reading global disabled protocols file\n\"%s\": %s.",
|
|
gdp_path, strerror(gdp_read_errno));
|
|
}
|
|
g_free(gdp_path);
|
|
}
|
|
if (dp_path != NULL) {
|
|
if (dp_open_errno != 0) {
|
|
cmdarg_err(
|
|
"Could not open your disabled protocols file\n\"%s\": %s.", dp_path,
|
|
strerror(dp_open_errno));
|
|
}
|
|
if (dp_read_errno != 0) {
|
|
cmdarg_err(
|
|
"I/O error reading your disabled protocols file\n\"%s\": %s.", dp_path,
|
|
strerror(dp_read_errno));
|
|
}
|
|
g_free(dp_path);
|
|
}
|
|
|
|
#ifdef _WIN32
|
|
/* Load Wpcap, if possible */
|
|
load_wpcap();
|
|
#endif
|
|
|
|
init_cap_file(&cfile);
|
|
|
|
/* Assemble the compile-time version information string */
|
|
comp_info_str = g_string_new("Compiled ");
|
|
get_compiled_version_info(comp_info_str, get_epan_compiled_version_info);
|
|
|
|
/* Assemble the run-time version information string */
|
|
runtime_info_str = g_string_new("Running ");
|
|
get_runtime_version_info(runtime_info_str, NULL);
|
|
|
|
/* Print format defaults to this. */
|
|
print_format = PR_FMT_TEXT;
|
|
|
|
/* Initialize our encapsulation type */
|
|
encap = WTAP_ENCAP_UNKNOWN;
|
|
|
|
/* Now get our args */
|
|
/* XXX - We should probably have an option to dump libpcap link types */
|
|
while ((opt = getopt(argc, argv, optstring)) != -1) {
|
|
switch (opt) {
|
|
case 'd': /* Payload type */
|
|
if (!set_link_type(optarg)) {
|
|
cmdarg_err("Invalid link type or protocol \"%s\"", optarg);
|
|
exit(1);
|
|
}
|
|
break;
|
|
case 'F': /* Read field to display */
|
|
g_ptr_array_add(disp_fields, g_strdup(optarg));
|
|
break;
|
|
case 'h': /* Print help and exit */
|
|
print_usage(TRUE);
|
|
exit(0);
|
|
break;
|
|
case 'l': /* "Line-buffer" standard output */
|
|
/* This isn't line-buffering, strictly speaking, it's just
|
|
flushing the standard output after the information for
|
|
each packet is printed; however, that should be good
|
|
enough for all the purposes to which "-l" is put (and
|
|
is probably actually better for "-V", as it does fewer
|
|
writes).
|
|
|
|
See the comment in "process_packet()" for an explanation of
|
|
why we do that, and why we don't just use "setvbuf()" to
|
|
make the standard output line-buffered (short version: in
|
|
Windows, "line-buffered" is the same as "fully-buffered",
|
|
and the output buffer is only flushed when it fills up). */
|
|
line_buffered = TRUE;
|
|
break;
|
|
case 'n': /* No name resolution */
|
|
g_resolv_flags = RESOLV_NONE;
|
|
break;
|
|
case 'N': /* Select what types of addresses/port #s to resolve */
|
|
if (g_resolv_flags == RESOLV_ALL)
|
|
g_resolv_flags = RESOLV_NONE;
|
|
badopt = string_to_name_resolve(optarg, &g_resolv_flags);
|
|
if (badopt != '\0') {
|
|
cmdarg_err("-N specifies unknown resolving option '%c'; valid options are 'm', 'n', and 't'",
|
|
badopt);
|
|
exit(1);
|
|
}
|
|
break;
|
|
case 'o': /* Override preference from command line */
|
|
switch (prefs_set_pref(optarg)) {
|
|
|
|
case PREFS_SET_OK:
|
|
break;
|
|
|
|
case PREFS_SET_SYNTAX_ERR:
|
|
cmdarg_err("Invalid -o flag \"%s\"", optarg);
|
|
exit(1);
|
|
break;
|
|
|
|
case PREFS_SET_NO_SUCH_PREF:
|
|
case PREFS_SET_OBSOLETE:
|
|
cmdarg_err("-o flag \"%s\" specifies unknown preference", optarg);
|
|
exit(1);
|
|
break;
|
|
}
|
|
break;
|
|
case 'r': /* Read capture file xxx */
|
|
pipe_name = g_strdup(optarg);
|
|
break;
|
|
case 'R': /* Read file filter */
|
|
if(n_rfilters < (int) sizeof(rfilters) / (int) sizeof(rfilters[0])) {
|
|
rfilters[n_rfilters++] = optarg;
|
|
}
|
|
else {
|
|
cmdarg_err("Too many display filters");
|
|
exit(1);
|
|
}
|
|
break;
|
|
case 'S': /* Print string representations */
|
|
if (!parse_field_string_format(optarg)) {
|
|
cmdarg_err("Invalid field string format");
|
|
exit(1);
|
|
}
|
|
break;
|
|
case 't': /* Time stamp type */
|
|
if (strcmp(optarg, "r") == 0)
|
|
timestamp_set_type(TS_RELATIVE);
|
|
else if (strcmp(optarg, "a") == 0)
|
|
timestamp_set_type(TS_ABSOLUTE);
|
|
else if (strcmp(optarg, "ad") == 0)
|
|
timestamp_set_type(TS_ABSOLUTE_WITH_DATE);
|
|
else if (strcmp(optarg, "d") == 0)
|
|
timestamp_set_type(TS_DELTA);
|
|
else if (strcmp(optarg, "dd") == 0)
|
|
timestamp_set_type(TS_DELTA_DIS);
|
|
else if (strcmp(optarg, "e") == 0)
|
|
timestamp_set_type(TS_EPOCH);
|
|
else {
|
|
cmdarg_err("Invalid time stamp type \"%s\"",
|
|
optarg);
|
|
cmdarg_err_cont("It must be \"r\" for relative, \"a\" for absolute,");
|
|
cmdarg_err_cont("\"ad\" for absolute with date, or \"d\" for delta.");
|
|
exit(1);
|
|
}
|
|
break;
|
|
case 'v': /* Show version and exit */
|
|
printf("Rawshark " VERSION "%s\n"
|
|
"\n"
|
|
"%s"
|
|
"\n"
|
|
"%s"
|
|
"\n"
|
|
"%s",
|
|
wireshark_svnversion, get_copyright_info(), comp_info_str->str,
|
|
runtime_info_str->str);
|
|
exit(0);
|
|
break;
|
|
|
|
default:
|
|
case '?': /* Bad flag - print usage message */
|
|
print_usage(TRUE);
|
|
exit(1);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Initialize our display fields */
|
|
for (fc = 0; fc < disp_fields->len; fc++) {
|
|
protocolinfo_init(g_ptr_array_index(disp_fields, fc));
|
|
}
|
|
g_ptr_array_free(disp_fields, TRUE);
|
|
printf("\n");
|
|
fflush(stdout);
|
|
|
|
/* If no capture filter or read filter has been specified, and there are
|
|
still command-line arguments, treat them as the tokens of a capture
|
|
filter (if no "-r" flag was specified) or a read filter (if a "-r"
|
|
flag was specified. */
|
|
if (optind < argc) {
|
|
if (pipe_name != NULL) {
|
|
if (n_rfilters != 0) {
|
|
cmdarg_err("Read filters were specified both with \"-R\" "
|
|
"and with additional command-line arguments");
|
|
exit(1);
|
|
}
|
|
rfilters[n_rfilters] = get_args_as_string(argc, argv, optind);
|
|
}
|
|
}
|
|
|
|
/* Make sure we got a dissector handle for our payload. */
|
|
if (encap == WTAP_ENCAP_UNKNOWN) {
|
|
cmdarg_err("No valid payload dissector specified.");
|
|
exit(1);
|
|
}
|
|
|
|
if (arg_error) {
|
|
print_usage(FALSE);
|
|
exit(1);
|
|
}
|
|
|
|
|
|
#ifdef _WIN32
|
|
/* Start windows sockets */
|
|
WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
|
|
#endif /* _WIN32 */
|
|
|
|
/* Notify all registered modules that have had any of their preferences
|
|
changed either from one of the preferences file or from the command
|
|
line that their preferences have changed. */
|
|
prefs_apply_all();
|
|
|
|
/* At this point MATE will have registered its field array so we can
|
|
have a tap filter with one of MATE's late-registered fields as part
|
|
of the filter. We can now process all the "-z" arguments. */
|
|
start_requested_stats();
|
|
|
|
/* disabled protocols as per configuration file */
|
|
if (gdp_path == NULL && dp_path == NULL) {
|
|
set_disabled_protos_list();
|
|
}
|
|
|
|
/* Build the column format array */
|
|
col_setup(&cfile.cinfo, prefs->num_cols);
|
|
for (i = 0; i < cfile.cinfo.num_cols; i++) {
|
|
cfile.cinfo.col_fmt[i] = get_column_format(i);
|
|
cfile.cinfo.col_title[i] = g_strdup(get_column_title(i));
|
|
cfile.cinfo.fmt_matx[i] = (gboolean *) g_malloc0(sizeof(gboolean) *
|
|
NUM_COL_FMTS);
|
|
get_column_format_matches(cfile.cinfo.fmt_matx[i], cfile.cinfo.col_fmt[i]);
|
|
cfile.cinfo.col_data[i] = NULL;
|
|
if (cfile.cinfo.col_fmt[i] == COL_INFO)
|
|
cfile.cinfo.col_buf[i] = (gchar *) g_malloc(sizeof(gchar) * COL_MAX_INFO_LEN);
|
|
else
|
|
cfile.cinfo.col_buf[i] = (gchar *) g_malloc(sizeof(gchar) * COL_MAX_LEN);
|
|
cfile.cinfo.col_fence[i] = 0;
|
|
cfile.cinfo.col_expr.col_expr[i] = (gchar *) g_malloc(sizeof(gchar) * COL_MAX_LEN);
|
|
cfile.cinfo.col_expr.col_expr_val[i] = (gchar *) g_malloc(sizeof(gchar) * COL_MAX_LEN);
|
|
}
|
|
|
|
for (i = 0; i < cfile.cinfo.num_cols; i++) {
|
|
int j;
|
|
|
|
for (j = 0; j < NUM_COL_FMTS; j++) {
|
|
if (!cfile.cinfo.fmt_matx[i][j])
|
|
continue;
|
|
|
|
if (cfile.cinfo.col_first[j] == -1)
|
|
cfile.cinfo.col_first[j] = i;
|
|
cfile.cinfo.col_last[j] = i;
|
|
}
|
|
}
|
|
|
|
if (n_rfilters != 0) {
|
|
for (i = 0; i < n_rfilters; i++) {
|
|
if (!dfilter_compile(rfilters[i], &rfcodes[n_rfcodes])) {
|
|
cmdarg_err("%s", dfilter_error_msg);
|
|
epan_cleanup();
|
|
exit(2);
|
|
}
|
|
n_rfcodes++;
|
|
}
|
|
}
|
|
|
|
if (pipe_name) {
|
|
/*
|
|
* We're reading a pipe (or capture file).
|
|
*/
|
|
|
|
/*
|
|
* Immediately relinquish any special privileges we have; we must not
|
|
* be allowed to read any capture files the user running Rawshark
|
|
* can't open.
|
|
*/
|
|
relinquish_special_privs_perm();
|
|
|
|
if (raw_cf_open(&cfile, pipe_name) != CF_OK) {
|
|
epan_cleanup();
|
|
exit(2);
|
|
}
|
|
|
|
/* Set timestamp precision; there should arguably be a command-line
|
|
option to let the user set this. */
|
|
#if 0
|
|
switch(wtap_file_tsprecision(cfile.wth)) {
|
|
case(WTAP_FILE_TSPREC_SEC):
|
|
timestamp_set_precision(TS_PREC_AUTO_SEC);
|
|
break;
|
|
case(WTAP_FILE_TSPREC_DSEC):
|
|
timestamp_set_precision(TS_PREC_AUTO_DSEC);
|
|
break;
|
|
case(WTAP_FILE_TSPREC_CSEC):
|
|
timestamp_set_precision(TS_PREC_AUTO_CSEC);
|
|
break;
|
|
case(WTAP_FILE_TSPREC_MSEC):
|
|
timestamp_set_precision(TS_PREC_AUTO_MSEC);
|
|
break;
|
|
case(WTAP_FILE_TSPREC_USEC):
|
|
timestamp_set_precision(TS_PREC_AUTO_USEC);
|
|
break;
|
|
case(WTAP_FILE_TSPREC_NSEC):
|
|
timestamp_set_precision(TS_PREC_AUTO_NSEC);
|
|
break;
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
#else
|
|
timestamp_set_precision(TS_PREC_AUTO_USEC);
|
|
#endif
|
|
|
|
/* Process the packets in the file */
|
|
err = load_cap_file(&cfile);
|
|
|
|
if (err != 0) {
|
|
epan_cleanup();
|
|
exit(2);
|
|
}
|
|
} else {
|
|
/* If you want to capture live packets, use TShark. */
|
|
cmdarg_err("Input file or pipe name not specified.");
|
|
exit(2);
|
|
}
|
|
|
|
epan_cleanup();
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Read data from a raw pipe. The "raw" data consists of a libpcap
|
|
* packet header followed by the payload.
|
|
* @param fd [IN] A POSIX file descriptor. Because that's _exactly_ the sort
|
|
* of thing you want to use in Windows.
|
|
* @param phdr [OUT] Packet header information.
|
|
* @param err [OUT] Error indicator. Uses wiretap values.
|
|
* @param err_info [OUT] Error message.
|
|
* @param data_offset [OUT] data offset in the pipe.
|
|
* @return TRUE on success, FALSE on failure.
|
|
*/
|
|
static gboolean
|
|
raw_pipe_read(struct wtap_pkthdr *phdr, guchar * pd, int *err, gchar **err_info, gint64 *data_offset) {
|
|
struct pcap_pkthdr hdr;
|
|
int bytes_read = 0;
|
|
int bytes_needed = sizeof(struct pcap_pkthdr);
|
|
static gchar err_str[100];
|
|
|
|
/* Copied from capture_loop.c */
|
|
while (bytes_needed > 0) {
|
|
bytes_read = read(fd, &hdr, bytes_needed);
|
|
if (bytes_read == 0) {
|
|
*err = 0;
|
|
return FALSE;
|
|
} else if (bytes_read < 0) {
|
|
*err = WTAP_ERR_CANT_READ;
|
|
*err_info = "Error reading header from pipe";
|
|
return FALSE;
|
|
}
|
|
bytes_needed -= bytes_read;
|
|
*data_offset += bytes_read;
|
|
}
|
|
|
|
bytes_read = 0;
|
|
phdr->ts.secs = hdr.ts.tv_sec;
|
|
phdr->ts.nsecs = hdr.ts.tv_usec * 1000;
|
|
phdr->caplen = bytes_needed = hdr.caplen;
|
|
phdr->len = hdr.len;
|
|
phdr->pkt_encap = encap;
|
|
|
|
#if 0
|
|
printf("tv_sec: %d (%04x)\n", hdr.ts.tv_sec, hdr.ts.tv_sec);
|
|
printf("tv_usec: %d (%04x)\n", hdr.ts.tv_usec, hdr.ts.tv_usec);
|
|
printf("caplen: %d (%04x)\n", hdr.caplen, hdr.caplen);
|
|
printf("len: %d (%04x)\n", hdr.len, hdr.len);
|
|
#endif
|
|
if (bytes_needed > WTAP_MAX_PACKET_SIZE) {
|
|
*err = WTAP_ERR_BAD_RECORD;
|
|
g_snprintf(err_str, 100, "Bad packet length: %d (%04x)", bytes_needed, bytes_needed);
|
|
*err_info = err_str;
|
|
return FALSE;
|
|
}
|
|
|
|
while (bytes_needed > 0) {
|
|
bytes_read = read(fd, pd, bytes_needed);
|
|
if (bytes_read == 0) {
|
|
*err = WTAP_ERR_SHORT_READ;
|
|
*err_info = "Got zero bytes reading data from pipe";
|
|
return FALSE;
|
|
} else if (bytes_read < 0) {
|
|
*err = WTAP_ERR_CANT_READ;
|
|
*err_info = "Error reading data from pipe";
|
|
return FALSE;
|
|
}
|
|
bytes_needed -= bytes_read;
|
|
*data_offset += bytes_read;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static int
|
|
load_cap_file(capture_file *cf)
|
|
{
|
|
int err;
|
|
gchar *err_info;
|
|
gint64 data_offset = 0;
|
|
struct wtap_pkthdr phdr;
|
|
guchar pd[WTAP_MAX_PACKET_SIZE];
|
|
|
|
while (raw_pipe_read(&phdr, pd, &err, &err_info, &data_offset)) {
|
|
process_packet(cf, data_offset, &phdr, pd);
|
|
}
|
|
|
|
if (err != 0) {
|
|
/* Print a message noting that the read failed somewhere along the line. */
|
|
switch (err) {
|
|
|
|
case WTAP_ERR_UNSUPPORTED_ENCAP:
|
|
cmdarg_err("\"%s\" has a packet with a network type that Rawshark doesn't support.\n(%s)",
|
|
cf->filename, err_info);
|
|
break;
|
|
|
|
case WTAP_ERR_CANT_READ:
|
|
cmdarg_err("An attempt to read from \"%s\" failed for some unknown reason.",
|
|
cf->filename);
|
|
break;
|
|
|
|
case WTAP_ERR_SHORT_READ:
|
|
cmdarg_err("\"%s\" appears to have been cut short in the middle of a packet.",
|
|
cf->filename);
|
|
break;
|
|
|
|
case WTAP_ERR_BAD_RECORD:
|
|
cmdarg_err("\"%s\" appears to be damaged or corrupt.\n(%s)",
|
|
cf->filename, err_info);
|
|
break;
|
|
|
|
default:
|
|
cmdarg_err("An error occurred while reading \"%s\": %s.",
|
|
cf->filename, wtap_strerror(err));
|
|
break;
|
|
}
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static void
|
|
fill_in_fdata(frame_data *fdata, capture_file *cf,
|
|
const struct wtap_pkthdr *phdr, gint64 offset)
|
|
{
|
|
fdata->next = NULL;
|
|
fdata->prev = NULL;
|
|
fdata->pfd = NULL;
|
|
fdata->num = cf->count;
|
|
fdata->pkt_len = phdr->len;
|
|
cum_bytes += phdr->len;
|
|
fdata->cum_bytes = cum_bytes;
|
|
fdata->cap_len = phdr->caplen;
|
|
fdata->file_off = offset;
|
|
fdata->lnk_t = phdr->pkt_encap;
|
|
fdata->abs_ts.secs = phdr->ts.secs;
|
|
fdata->abs_ts.nsecs = phdr->ts.nsecs;
|
|
fdata->flags.passed_dfilter = 0;
|
|
fdata->flags.encoding = CHAR_ASCII;
|
|
fdata->flags.visited = 0;
|
|
fdata->flags.marked = 0;
|
|
fdata->flags.ref_time = 0;
|
|
fdata->color_filter = NULL;
|
|
|
|
/* If we don't have the time stamp of the first packet in the
|
|
capture, it's because this is the first packet. Save the time
|
|
stamp of this packet as the time stamp of the first packet. */
|
|
if (nstime_is_unset(&first_ts)) {
|
|
first_ts = fdata->abs_ts;
|
|
}
|
|
|
|
/* If we don't have the time stamp of the previous captured packet,
|
|
it's because this is the first packet. Save the time
|
|
stamp of this packet as the time stamp of the previous captured
|
|
packet. */
|
|
if (nstime_is_unset(&prev_cap_ts)) {
|
|
prev_cap_ts = fdata->abs_ts;
|
|
}
|
|
|
|
/* Get the time elapsed between the first packet and this packet. */
|
|
nstime_delta(&fdata->rel_ts, &fdata->abs_ts, &first_ts);
|
|
|
|
/* If it's greater than the current elapsed time, set the elapsed time
|
|
to it (we check for "greater than" so as not to be confused by
|
|
time moving backwards). */
|
|
if ((gint32)cf->elapsed_time.secs < fdata->rel_ts.secs
|
|
|| ((gint32)cf->elapsed_time.secs == fdata->rel_ts.secs && (gint32)cf->elapsed_time.nsecs < fdata->rel_ts.nsecs)) {
|
|
cf->elapsed_time = fdata->rel_ts;
|
|
}
|
|
|
|
/* If we don't have the time stamp of the previous displayed packet,
|
|
it's because this is the first packet that's being displayed. Save the time
|
|
stamp of this packet as the time stamp of the previous displayed
|
|
packet. */
|
|
if (nstime_is_unset(&prev_dis_ts))
|
|
prev_dis_ts = fdata->abs_ts;
|
|
|
|
/* Get the time elapsed between the previous displayed packet and
|
|
this packet. */
|
|
nstime_delta(&fdata->del_dis_ts, &fdata->abs_ts, &prev_dis_ts);
|
|
|
|
/* Get the time elapsed between the previous captured packet and
|
|
this packet. */
|
|
nstime_delta(&fdata->del_cap_ts, &fdata->abs_ts, &prev_cap_ts);
|
|
prev_cap_ts = fdata->abs_ts;
|
|
}
|
|
|
|
/* Free up all data attached to a "frame_data" structure. */
|
|
static void
|
|
clear_fdata(frame_data *fdata)
|
|
{
|
|
if (fdata->pfd)
|
|
g_slist_free(fdata->pfd);
|
|
}
|
|
|
|
static gboolean
|
|
process_packet(capture_file *cf, gint64 offset, const struct wtap_pkthdr *whdr,
|
|
const guchar *pd)
|
|
{
|
|
frame_data fdata;
|
|
gboolean create_proto_tree;
|
|
epan_dissect_t *edt;
|
|
gboolean passed;
|
|
union wtap_pseudo_header pseudo_header;
|
|
int i;
|
|
|
|
if(whdr->len == 0)
|
|
{
|
|
/* The user sends an empty packet when he wants to get output from us even if we don't currently have
|
|
packets to process. We spit out a line with the timestamp and the text "void"
|
|
*/
|
|
printf("%lu %lu %lu void -\n", (unsigned long int)cf->count,
|
|
(unsigned long int)whdr->ts.secs,
|
|
(unsigned long int)whdr->ts.nsecs);
|
|
|
|
fflush(stdout);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
memset(&pseudo_header, 0, sizeof(pseudo_header));
|
|
|
|
/* Count this packet. */
|
|
cf->count++;
|
|
|
|
/* If we're going to print packet information, or we're going to
|
|
run a read filter, or we're going to process taps, set up to
|
|
do a dissection and do so. */
|
|
fill_in_fdata(&fdata, cf, whdr, offset);
|
|
|
|
passed = TRUE;
|
|
create_proto_tree = TRUE;
|
|
|
|
/* The protocol tree will be "visible", i.e., printed, only if we're
|
|
printing packet details, which is true if we're in verbose mode ("verbose"
|
|
is true). */
|
|
edt = epan_dissect_new(create_proto_tree, FALSE);
|
|
|
|
/* If we're running a read filter, prime the epan_dissect_t with that
|
|
filter. */
|
|
if (n_rfilters > 0) {
|
|
for(i = 0; i < n_rfcodes; i++) {
|
|
epan_dissect_prime_dfilter(edt, rfcodes[i]);
|
|
}
|
|
}
|
|
|
|
tap_queue_init(edt);
|
|
|
|
printf("%lu", (unsigned long int)cf->count);
|
|
|
|
/* We only need the columns if we're printing packet info but we're
|
|
*not* verbose; in verbose mode, we print the protocol tree, not
|
|
the protocol summary. */
|
|
epan_dissect_run(edt, &pseudo_header, pd, &fdata, &cf->cinfo);
|
|
|
|
tap_push_tapped_queue(edt);
|
|
|
|
for(i = 0; i < n_rfilters; i++) {
|
|
/* Run the read filter if we have one. */
|
|
if (rfcodes[i])
|
|
passed = dfilter_apply_edt(rfcodes[i], edt);
|
|
else
|
|
passed = TRUE;
|
|
|
|
/* Print a one-line summary */
|
|
printf(" %u", passed ? 1 : 0);
|
|
}
|
|
|
|
printf(" -\n");
|
|
|
|
/* The ANSI C standard does not appear to *require* that a line-buffered
|
|
stream be flushed to the host environment whenever a newline is
|
|
written, it just says that, on such a stream, characters "are
|
|
intended to be transmitted to or from the host environment as a
|
|
block when a new-line character is encountered".
|
|
|
|
The Visual C++ 6.0 C implementation doesn't do what is intended;
|
|
even if you set a stream to be line-buffered, it still doesn't
|
|
flush the buffer at the end of every line.
|
|
|
|
So, if the "-l" flag was specified, we flush the standard output
|
|
at the end of a packet. This will do the right thing if we're
|
|
printing packet summary lines, and, as we print the entire protocol
|
|
tree for a single packet without waiting for anything to happen,
|
|
it should be as good as line-buffered mode if we're printing
|
|
protocol trees. (The whole reason for the "-l" flag in either
|
|
tcpdump or Rawshark is to allow the output of a live capture to
|
|
be piped to a program or script and to have that script see the
|
|
information for the packet as soon as it's printed, rather than
|
|
having to wait until a standard I/O buffer fills up. */
|
|
if (line_buffered)
|
|
fflush(stdout);
|
|
|
|
if (ferror(stdout)) {
|
|
show_print_file_io_error(errno);
|
|
exit(2);
|
|
}
|
|
|
|
epan_dissect_free(edt);
|
|
clear_fdata(&fdata);
|
|
|
|
return passed;
|
|
}
|
|
|
|
/****************************************************************************************
|
|
* FIELD EXTRACTION ROUTINES
|
|
****************************************************************************************/
|
|
typedef struct _pci_t {
|
|
char *filter;
|
|
int hf_index;
|
|
int cmd_line_index;
|
|
} pci_t;
|
|
|
|
char* ftenum_to_string(header_field_info *hfi)
|
|
{
|
|
if (!hfi) {
|
|
return "n.a.";
|
|
}
|
|
|
|
if (string_fmts->len > 0 && hfi->strings) {
|
|
return "FT_STRING";
|
|
}
|
|
|
|
switch(hfi->type) {
|
|
case FT_NONE:
|
|
return "FT_NONE";
|
|
case FT_PROTOCOL:
|
|
return "FT_PROTOCOL";
|
|
case FT_BOOLEAN:
|
|
return "FT_BOOLEAN";
|
|
case FT_UINT8:
|
|
return "FT_UINT8";
|
|
case FT_UINT16:
|
|
return "FT_UINT16";
|
|
case FT_UINT24:
|
|
return "FT_UINT24";
|
|
case FT_UINT32:
|
|
return "FT_UINT32";
|
|
case FT_UINT64:
|
|
return "FT_UINT64";
|
|
case FT_INT8:
|
|
return "FT_INT8";
|
|
case FT_INT16:
|
|
return "FT_INT16";
|
|
case FT_INT24:
|
|
return "FT_INT24";
|
|
case FT_INT32:
|
|
return "FT_INT32";
|
|
case FT_INT64:
|
|
return "FT_INT64";
|
|
case FT_FLOAT:
|
|
return "FT_FLOAT";
|
|
case FT_DOUBLE:
|
|
return "FT_DOUBLE";
|
|
case FT_ABSOLUTE_TIME:
|
|
return "FT_ABSOLUTE_TIME";
|
|
case FT_RELATIVE_TIME:
|
|
return "FT_RELATIVE_TIME";
|
|
case FT_STRING:
|
|
return "FT_STRING";
|
|
case FT_STRINGZ:
|
|
return "FT_STRINGZ";
|
|
case FT_UINT_STRING:
|
|
return "FT_UINT_STRING";
|
|
case FT_ETHER:
|
|
return "FT_ETHER";
|
|
case FT_BYTES:
|
|
return "FT_BYTES";
|
|
case FT_UINT_BYTES:
|
|
return "FT_UINT_BYTES";
|
|
case FT_IPv4:
|
|
return "FT_IPv4";
|
|
case FT_IPv6:
|
|
return "FT_IPv6";
|
|
case FT_IPXNET:
|
|
return "FT_IPXNET";
|
|
case FT_FRAMENUM:
|
|
return "FT_FRAMENUM";
|
|
case FT_PCRE:
|
|
return "FT_PCRE";
|
|
case FT_GUID:
|
|
return "FT_GUID";
|
|
case FT_OID:
|
|
return "FT_OID";
|
|
case FT_NUM_TYPES:
|
|
return "FT_NUM_TYPES";
|
|
default:
|
|
return "n.a.";
|
|
};
|
|
}
|
|
|
|
char* base_display_e_to_string(base_display_e bd)
|
|
{
|
|
switch(bd) {
|
|
case BASE_NONE:
|
|
return "BASE_NONE";
|
|
case BASE_DEC:
|
|
return "BASE_DEC";
|
|
case BASE_HEX:
|
|
return "BASE_HEX";
|
|
case BASE_OCT:
|
|
return "BASE_OCT";
|
|
case BASE_DEC_HEX:
|
|
return "BASE_DEC_HEX";
|
|
case BASE_HEX_DEC:
|
|
return "BASE_HEX_DEC";
|
|
default:
|
|
return "n.a.";
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Copied from various parts of proto.c
|
|
*/
|
|
#define FIELD_STR_INIT_LEN 256
|
|
#define cVALS(x) (const value_string*)(x)
|
|
static gboolean print_field_value(field_info *finfo, int cmd_line_index)
|
|
{
|
|
header_field_info *hfinfo;
|
|
static char *fs_buf = NULL;
|
|
char *fs_ptr = fs_buf;
|
|
static GString *label_s = NULL;
|
|
int fs_buf_len = FIELD_STR_INIT_LEN, fs_len;
|
|
guint i;
|
|
string_fmt_t *sf;
|
|
guint32 uvalue;
|
|
gint32 svalue;
|
|
const true_false_string *tfstring = &tfs_true_false;
|
|
|
|
hfinfo = finfo->hfinfo;
|
|
|
|
if (!fs_buf) {
|
|
fs_buf = g_malloc(fs_buf_len + 1);
|
|
fs_ptr = fs_buf;
|
|
}
|
|
|
|
if (!label_s) {
|
|
label_s = g_string_new("");
|
|
}
|
|
|
|
if(finfo->value.ftype->val_to_string_repr)
|
|
{
|
|
/*
|
|
* this field has an associated value,
|
|
* e.g: ip.hdr_len
|
|
*/
|
|
fs_len = fvalue_string_repr_len(&finfo->value, FTREPR_DFILTER);
|
|
while (fs_buf_len < fs_len) {
|
|
fs_buf_len *= 2;
|
|
fs_buf = g_realloc(fs_buf, fs_buf_len + 1);
|
|
fs_ptr = fs_buf;
|
|
}
|
|
fvalue_to_string_repr(&finfo->value,
|
|
FTREPR_DFILTER,
|
|
fs_buf);
|
|
|
|
/* String types are quoted. Remove them. */
|
|
if ((finfo->value.ftype->ftype == FT_STRING || finfo->value.ftype->ftype == FT_STRINGZ) && fs_len > 2) {
|
|
fs_buf[fs_len - 1] = '\0';
|
|
fs_ptr++;
|
|
}
|
|
}
|
|
|
|
if (string_fmts->len > 0 && finfo->hfinfo->strings) {
|
|
g_string_truncate(label_s, 0);
|
|
for (i = 0; i < string_fmts->len; i++) {
|
|
sf = g_ptr_array_index(string_fmts, i);
|
|
if (sf->plain) {
|
|
g_string_append(label_s, sf->plain);
|
|
} else {
|
|
switch (sf->format) {
|
|
case SF_NAME:
|
|
g_string_append(label_s, hfinfo->name);
|
|
break;
|
|
case SF_NUMVAL:
|
|
g_string_append(label_s, fs_ptr);
|
|
break;
|
|
case SF_STRVAL:
|
|
switch(hfinfo->type) {
|
|
case FT_BOOLEAN:
|
|
uvalue = fvalue_get_uinteger(&finfo->value);
|
|
tfstring = (const struct true_false_string*) hfinfo->strings;
|
|
g_string_append(label_s, uvalue ? tfstring->true_string : tfstring->false_string);
|
|
break;
|
|
case FT_INT8:
|
|
case FT_INT16:
|
|
case FT_INT24:
|
|
case FT_INT32:
|
|
DISSECTOR_ASSERT(!hfinfo->bitmask);
|
|
svalue = fvalue_get_sinteger(&finfo->value);
|
|
if (hfinfo->display & BASE_RANGE_STRING) {
|
|
g_string_append(label_s, rval_to_str(svalue, hfinfo->strings, "Unknown"));
|
|
} else {
|
|
g_string_append(label_s, val_to_str(svalue, cVALS(hfinfo->strings), "Unknown"));
|
|
}
|
|
case FT_UINT8:
|
|
case FT_UINT16:
|
|
case FT_UINT24:
|
|
case FT_UINT32:
|
|
uvalue = fvalue_get_uinteger(&finfo->value);
|
|
if (!hfinfo->bitmask && hfinfo->display & BASE_RANGE_STRING) {
|
|
g_string_append(label_s, rval_to_str(uvalue, hfinfo->strings, "Unknown"));
|
|
} else {
|
|
g_string_append(label_s, val_to_str(uvalue, cVALS(hfinfo->strings), "Unknown"));
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
printf(" %u=\"%s\"", cmd_line_index, label_s->str);
|
|
return TRUE;
|
|
}
|
|
|
|
if(finfo->value.ftype->val_to_string_repr)
|
|
{
|
|
printf(" %u=\"%s\"", cmd_line_index, fs_ptr);
|
|
return TRUE;
|
|
}
|
|
|
|
/*
|
|
* This field doesn't have an associated value,
|
|
* e.g. http
|
|
* We return n.a.
|
|
*/
|
|
printf(" %u=\"n.a.\"", cmd_line_index);
|
|
return TRUE;
|
|
}
|
|
|
|
static int
|
|
protocolinfo_packet(void *prs, packet_info *pinfo _U_, epan_dissect_t *edt, const void *dummy _U_)
|
|
{
|
|
pci_t *rs=prs;
|
|
GPtrArray *gp;
|
|
guint i;
|
|
|
|
gp=proto_get_finfo_ptr_array(edt->tree, rs->hf_index);
|
|
if(!gp){
|
|
printf(" n.a.");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Print each occurrence of the field
|
|
*/
|
|
for (i = 0; i < gp->len; i++) {
|
|
print_field_value(gp->pdata[i], rs->cmd_line_index);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int g_cmd_line_index = 0;
|
|
|
|
/*
|
|
* field must be persistent - we don't g_strdup() it below
|
|
*/
|
|
static void
|
|
protocolinfo_init(char *field)
|
|
{
|
|
pci_t *rs;
|
|
header_field_info *hfi;
|
|
GString *error_string;
|
|
|
|
hfi=proto_registrar_get_byname(field);
|
|
if(!hfi){
|
|
fprintf(stderr, "rawshark: Field \"%s\" doesn't exist.\n", field);
|
|
exit(1);
|
|
}
|
|
|
|
printf("%u %s %s - ",
|
|
g_cmd_line_index,
|
|
ftenum_to_string(hfi),
|
|
base_display_e_to_string(hfi->display));
|
|
|
|
rs=g_malloc(sizeof(pci_t));
|
|
rs->hf_index=hfi->id;
|
|
rs->filter=field;
|
|
rs->cmd_line_index = g_cmd_line_index++;
|
|
|
|
error_string=register_tap_listener("frame", rs, rs->filter, NULL, protocolinfo_packet, NULL);
|
|
if(error_string){
|
|
/* error, we failed to attach to the tap. complain and clean up */
|
|
fprintf(stderr, "rawshark: Couldn't register field extraction tap: %s\n",
|
|
error_string->str);
|
|
g_string_free(error_string, TRUE);
|
|
if(rs->filter){
|
|
g_free(rs->filter);
|
|
}
|
|
g_free(rs);
|
|
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Given a format string, split it into a GPtrArray of string_fmt_t structs
|
|
* and fill in string_fmt_parts.
|
|
*/
|
|
|
|
static void
|
|
add_string_fmt(string_fmt_e format, gchar *plain) {
|
|
string_fmt_t *sf = g_malloc(sizeof(string_fmt_t));
|
|
|
|
sf->format = format;
|
|
sf->plain = g_strdup(plain);
|
|
|
|
g_ptr_array_add(string_fmts, sf);
|
|
}
|
|
|
|
static gboolean
|
|
parse_field_string_format(gchar *format) {
|
|
GString *plain_s = g_string_new("");
|
|
int len;
|
|
int pos = 0;
|
|
|
|
if (!format) {
|
|
return FALSE;
|
|
}
|
|
|
|
len = strlen(format);
|
|
g_ptr_array_set_size(string_fmts, 0);
|
|
|
|
while (pos < len) {
|
|
if (format[pos] == '%') {
|
|
if (pos >= len) { /* There should always be a following character */
|
|
return FALSE;
|
|
}
|
|
pos++;
|
|
if (plain_s->len > 0) {
|
|
add_string_fmt(SF_NONE, plain_s->str);
|
|
g_string_truncate(plain_s, 0);
|
|
}
|
|
switch (format[pos]) {
|
|
case 'D':
|
|
add_string_fmt(SF_NAME, NULL);
|
|
break;
|
|
case 'N':
|
|
add_string_fmt(SF_NUMVAL, NULL);
|
|
break;
|
|
case 'S':
|
|
add_string_fmt(SF_STRVAL, NULL);
|
|
break;
|
|
case '%':
|
|
g_string_append_c(plain_s, '%');
|
|
break;
|
|
default: /* Invalid format */
|
|
return FALSE;
|
|
}
|
|
} else {
|
|
g_string_append_c(plain_s, format[pos]);
|
|
}
|
|
pos++;
|
|
}
|
|
|
|
if (plain_s->len > 0) {
|
|
add_string_fmt(SF_NONE, plain_s->str);
|
|
}
|
|
g_string_free(plain_s, TRUE);
|
|
|
|
return TRUE;
|
|
}
|
|
/****************************************************************************************
|
|
* END OF FIELD EXTRACTION ROUTINES
|
|
****************************************************************************************/
|
|
|
|
static void
|
|
show_print_file_io_error(int err)
|
|
{
|
|
switch (err) {
|
|
|
|
case ENOSPC:
|
|
cmdarg_err("Not all the packets could be printed because there is "
|
|
"no space left on the file system.");
|
|
break;
|
|
|
|
#ifdef EDQUOT
|
|
case EDQUOT:
|
|
cmdarg_err("Not all the packets could be printed because you are "
|
|
"too close to, or over your disk quota.");
|
|
break;
|
|
#endif
|
|
|
|
default:
|
|
cmdarg_err("An error occurred while printing packets: %s.",
|
|
strerror(err));
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Open/create errors are reported with an console message in Rawshark.
|
|
*/
|
|
static void
|
|
open_failure_message(const char *filename, int err, gboolean for_writing)
|
|
{
|
|
fprintf(stderr, "rawshark: ");
|
|
fprintf(stderr, file_open_error_message(err, for_writing), filename);
|
|
fprintf(stderr, "\n");
|
|
}
|
|
|
|
cf_status_t
|
|
raw_cf_open(capture_file *cf, const char *fname)
|
|
{
|
|
if ((fd = raw_pipe_open(fname)) < 0)
|
|
return CF_ERROR;
|
|
|
|
/* The open succeeded. Fill in the information for this file. */
|
|
|
|
/* Initialize all data structures used for dissection. */
|
|
init_dissection();
|
|
|
|
cf->wth = NULL;
|
|
cf->f_datalen = 0; /* not used, but set it anyway */
|
|
|
|
/* Set the file name because we need it to set the follow stream filter.
|
|
XXX - is that still true? We need it for other reasons, though,
|
|
in any case. */
|
|
cf->filename = g_strdup(fname);
|
|
|
|
/* Indicate whether it's a permanent or temporary file. */
|
|
cf->is_tempfile = FALSE;
|
|
|
|
/* If it's a temporary capture buffer file, mark it as not saved. */
|
|
cf->user_saved = FALSE;
|
|
|
|
cf->cd_t = WTAP_FILE_UNKNOWN;
|
|
cf->count = 0;
|
|
cf->drops_known = FALSE;
|
|
cf->drops = 0;
|
|
cf->has_snap = FALSE;
|
|
cf->snap = WTAP_MAX_PACKET_SIZE;
|
|
nstime_set_zero(&cf->elapsed_time);
|
|
nstime_set_unset(&first_ts);
|
|
nstime_set_unset(&prev_dis_ts);
|
|
nstime_set_unset(&prev_cap_ts);
|
|
|
|
return CF_OK;
|
|
}
|
|
|
|
|
|
/*
|
|
* General errors are reported with an console message in Rawshark.
|
|
*/
|
|
static void
|
|
failure_message(const char *msg_format, va_list ap)
|
|
{
|
|
fprintf(stderr, "rawshark: ");
|
|
vfprintf(stderr, msg_format, ap);
|
|
fprintf(stderr, "\n");
|
|
}
|
|
|
|
/*
|
|
* Read errors are reported with an console message in Rawshark.
|
|
*/
|
|
static void
|
|
read_failure_message(const char *filename, int err)
|
|
{
|
|
cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
|
|
filename, strerror(err));
|
|
}
|
|
|
|
/*
|
|
* Report an error in command-line arguments.
|
|
*/
|
|
void
|
|
cmdarg_err(const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
va_start(ap, fmt);
|
|
fprintf(stderr, "rawshark: ");
|
|
vfprintf(stderr, fmt, ap);
|
|
fprintf(stderr, "\n");
|
|
va_end(ap);
|
|
}
|
|
|
|
/*
|
|
* Report additional information for an error in command-line arguments.
|
|
*/
|
|
void
|
|
cmdarg_err_cont(const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
va_start(ap, fmt);
|
|
vfprintf(stderr, fmt, ap);
|
|
fprintf(stderr, "\n");
|
|
va_end(ap);
|
|
}
|
|
|
|
|
|
/****************************************************************************************************************/
|
|
/* other "dummies" */
|
|
void
|
|
cf_mark_frame(capture_file *cf _U_, frame_data *frame _U_)
|
|
{
|
|
/* shouldn't happen */
|
|
g_assert_not_reached();
|
|
}
|
|
|
|
/*
|
|
* Editor modelines
|
|
*
|
|
* Local Variables:
|
|
* c-basic-offset: 4
|
|
* tab-width: 4
|
|
* indent-tabs-mode: t
|
|
* End:
|
|
*
|
|
* ex: set shiftwidth=4 tabstop=4 noexpandtab
|
|
* :indentSize=4:tabSize=4:noTabs=false:
|
|
*/
|