![John Thacker](/assets/img/avatar_default.png)
Make the text of each registered column a FT_STRING field that can be filtered, prefixed with _ws.col - these work in display filters, filters in taps, coloring rules, Wireshark read filters, and in the -Y, -R, -e, and -j options to tshark. Use them as the default "Apply as Filter" value for the columns that aren't handled by anything else currently. Because only the columns formats that actually correspond to columns get filled in (invisible columns work), register and deregister the fields when the columns change. Use the lower case version of the rest of the COL_* define for each column as the field name. This adds a number of conditions to "when are the columns needed", including when the main display filter or any filter on a tap is using one of these fields. Custom columns are currently not implemented. For custom columns, the tree then has to be further primed with any fields used by the custom columns as well. (Perhaps that should happen in epan_dissect_run() - are there any cases where we construct the columns and don't want to prime with any field that custom columns contains? Possibly in taps that we know only use build in columns.) Thus, for performance reasons, you're better off matching an ordinary field if possible; it takes extra time to generate the columns and many of them are numeric types. (Note that you can always convert a non-string field to a string field if you want regex matching, consult the *wireshark-filter(4)* man page.) It does save a bit on typing (especially for a multifield custom column) and remembering the column title might be easier in some cases. The columns are set before the color filters, which means that you can have a color filter that depends on a built-in column like Info or Protocol. Remove the special handling for the -e option to tshark. Note that the behavior is a little different now, because fixed field names are used instead of the titles (using the titles allowed illegal filter names, because it wasn't going through the filter engine.) For default names, this means that they're no longer capitalized, so "_ws.col.info" instead of "_ws.col.Info" - hopefully a small price in exchange for the filters working everywhere. The output format for -T fields remains the same; all that special handling is removed (except for remembering if someone asked for a column field to know that columns should be constructed.) They're also set before the postdissectors, so postdissectors can have access. Anything that depends on whether a packet and previous packets are displayed (COL_DELTA_TIME_DIS or COL_CUMULATIVE_BYTES) doesn't work the way most people expect, so don't register fields for those. (The same is already true of color filters that use those, along with color filters that use the color filter fields.) Fix #16576. Fix #17971. Fix #4684. Fix #13491. Fix #13941.
2105 lines
75 KiB
C
2105 lines
75 KiB
C
/* tfshark.c
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*
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* Text-mode variant of Fileshark, based off of TShark,
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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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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include <config.h>
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#define WS_LOG_DOMAIN LOG_DOMAIN_MAIN
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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 <locale.h>
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#include <limits.h>
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#include <ws_exit_codes.h>
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#include <wsutil/ws_getopt.h>
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#include <errno.h>
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#include <glib.h>
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#include <epan/exceptions.h>
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#include <epan/epan.h>
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#include <wsutil/clopts_common.h>
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#include <wsutil/cmdarg_err.h>
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#include <ui/urls.h>
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#include <wsutil/filesystem.h>
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#include <wsutil/file_util.h>
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#include <wsutil/privileges.h>
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#include <wsutil/report_message.h>
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#include <wsutil/wslog.h>
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#include <wsutil/ws_assert.h>
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#include <cli_main.h>
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#include <wsutil/version_info.h>
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#include "globals.h"
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#include <epan/timestamp.h>
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#include <epan/packet.h>
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#ifdef HAVE_LUA
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#include <epan/wslua/init_wslua.h>
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#endif
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#include "file.h"
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#include "frame_tvbuff.h"
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#include <epan/disabled_protos.h>
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#include <epan/prefs.h>
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#include <epan/column.h>
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#include <epan/print.h>
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#include <epan/addr_resolv.h>
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#include "ui/util.h"
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#include "ui/decode_as_utils.h"
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#include "ui/dissect_opts.h"
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#include "ui/failure_message.h"
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#include <epan/epan_dissect.h>
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#include <epan/tap.h>
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#include <epan/stat_tap_ui.h>
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#include <epan/ex-opt.h>
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#include <wiretap/wtap-int.h>
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#include <wiretap/file_wrappers.h>
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#include <epan/funnel.h>
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#ifdef HAVE_PLUGINS
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#include <wsutil/plugins.h>
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#endif
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/* Additional exit codes */
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#define NO_FILE_SPECIFIED 1
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capture_file cfile;
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static guint32 cum_bytes;
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static frame_data ref_frame;
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static frame_data prev_dis_frame;
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static frame_data prev_cap_frame;
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static gboolean prefs_loaded = FALSE;
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static gboolean perform_two_pass_analysis;
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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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WRITE_FIELDS /* User defined list of fields */
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/* Add CSV and the like here */
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} output_action_e;
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static output_action_e output_action;
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static gboolean do_dissection; /* TRUE if we have to dissect each packet */
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static gboolean print_packet_info; /* TRUE if we're to print packet information */
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static gint print_summary = -1; /* TRUE if we're to print packet summary information */
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static gboolean print_details; /* TRUE if we're to print packet details information */
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static gboolean print_hex; /* TRUE if we're to print hex/ascci information */
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static gboolean line_buffered;
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static gboolean really_quiet = FALSE;
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static print_format_e print_format = PR_FMT_TEXT;
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static print_stream_t *print_stream;
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static output_fields_t* output_fields = NULL;
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/* The line separator used between packets, changeable via the -S option */
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static const char *separator = "";
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static gboolean process_file(capture_file *, int, gint64);
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static gboolean process_packet_single_pass(capture_file *cf,
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epan_dissect_t *edt, gint64 offset, wtap_rec *rec,
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const guchar *pd);
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static void show_print_file_io_error(int err);
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static gboolean write_preamble(capture_file *cf);
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static gboolean print_packet(capture_file *cf, epan_dissect_t *edt);
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static gboolean write_finale(void);
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static void tfshark_cmdarg_err(const char *msg_format, va_list ap);
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static void tfshark_cmdarg_err_cont(const char *msg_format, va_list ap);
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static GHashTable *output_only_tables = NULL;
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#if 0
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struct string_elem {
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const char *sstr; /* The short string */
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const char *lstr; /* The long string */
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};
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static gint
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string_compare(gconstpointer a, gconstpointer b)
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{
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return strcmp(((const struct string_elem *)a)->sstr,
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((const struct string_elem *)b)->sstr);
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}
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static void
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string_elem_print(gpointer data, gpointer not_used _U_)
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{
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fprintf(stderr, " %s - %s\n",
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((struct string_elem *)data)->sstr,
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((struct string_elem *)data)->lstr);
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}
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#endif
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static void
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print_usage(FILE *output)
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{
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fprintf(output, "\n");
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fprintf(output, "Usage: tfshark [options] ...\n");
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fprintf(output, "\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 filename to read from (no pipes or stdin)\n");
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fprintf(output, "\n");
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fprintf(output, "Processing:\n");
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fprintf(output, " -2 perform a two-pass analysis\n");
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fprintf(output, " -R <read filter> packet Read filter in Wireshark display filter syntax\n");
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fprintf(output, " (requires -2)\n");
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fprintf(output, " -Y <display filter> packet displaY filter in Wireshark display filter\n");
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fprintf(output, " syntax\n");
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fprintf(output, " -d %s ...\n", DECODE_AS_ARG_TEMPLATE);
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fprintf(output, " \"Decode As\", see the man page for details\n");
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fprintf(output, " Example: tcp.port==8888,http\n");
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/*fprintf(output, "\n");*/
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fprintf(output, "Output:\n");
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fprintf(output, " -C <config profile> start with specified configuration profile\n");
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fprintf(output, " -V add output of packet tree (Packet Details)\n");
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fprintf(output, " -O <protocols> Only show packet details of these protocols, comma\n");
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fprintf(output, " separated\n");
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fprintf(output, " -S <separator> the line separator to print between packets\n");
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fprintf(output, " -x add output of hex and ASCII dump (Packet Bytes)\n");
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fprintf(output, " -T pdml|ps|psml|text|fields\n");
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fprintf(output, " format of text output (def: text)\n");
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fprintf(output, " -e <field> field to print if -Tfields selected (e.g. tcp.port,\n");
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fprintf(output, " _ws.col.info)\n");
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fprintf(output, " this option can be repeated to print multiple fields\n");
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fprintf(output, " -E<fieldsoption>=<value> set options for output when -Tfields selected:\n");
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fprintf(output, " header=y|n switch headers on and off\n");
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fprintf(output, " separator=/t|/s|<char> select tab, space, printable character as separator\n");
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fprintf(output, " occurrence=f|l|a print first, last or all occurrences of each field\n");
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fprintf(output, " aggregator=,|/s|<char> select comma, space, printable character as\n");
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fprintf(output, " aggregator\n");
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fprintf(output, " quote=d|s|n select double, single, no quotes for values\n");
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fprintf(output, " -t a|ad|d|dd|e|r|u|ud output format of time stamps (def: r: rel. to first)\n");
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fprintf(output, " -u s|hms output format of seconds (def: s: seconds)\n");
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fprintf(output, " -l flush standard output after each packet\n");
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fprintf(output, " -q be more quiet on stdout (e.g. when using statistics)\n");
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fprintf(output, " -Q only log true errors to stderr (quieter than -q)\n");
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fprintf(output, " -X <key>:<value> eXtension options, see the man page for details\n");
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fprintf(output, " -z <statistics> various statistics, see the man page for details\n");
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fprintf(output, "\n");
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ws_log_print_usage(output);
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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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fprintf(output, " -K <keytab> keytab file to use for kerberos decryption\n");
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fprintf(output, " -G [report] dump one of several available reports and exit\n");
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fprintf(output, " default report=\"fields\"\n");
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fprintf(output, " use \"-G ?\" for more help\n");
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}
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static void
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glossary_option_help(void)
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{
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FILE *output;
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output = stdout;
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fprintf(output, "%s\n", get_appname_and_version());
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fprintf(output, "\n");
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fprintf(output, "Usage: tfshark -G [report]\n");
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fprintf(output, "\n");
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fprintf(output, "Glossary table reports:\n");
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fprintf(output, " -G column-formats dump column format codes and exit\n");
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fprintf(output, " -G decodes dump \"layer type\"/\"decode as\" associations and exit\n");
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fprintf(output, " -G dissector-tables dump dissector table names, types, and properties\n");
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fprintf(output, " -G fields dump fields glossary and exit\n");
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fprintf(output, " -G ftypes dump field type basic and descriptive names\n");
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fprintf(output, " -G heuristic-decodes dump heuristic dissector tables\n");
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fprintf(output, " -G plugins dump installed plugins and exit\n");
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fprintf(output, " -G protocols dump protocols in registration database and exit\n");
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fprintf(output, " -G values dump value, range, true/false strings and exit\n");
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fprintf(output, "\n");
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fprintf(output, "Preference reports:\n");
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fprintf(output, " -G currentprefs dump current preferences and exit\n");
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fprintf(output, " -G defaultprefs dump default preferences and exit\n");
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fprintf(output, "\n");
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}
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static void
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print_current_user(void)
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{
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gchar *cur_user, *cur_group;
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if (started_with_special_privs()) {
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cur_user = get_cur_username();
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cur_group = get_cur_groupname();
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fprintf(stderr, "Running as user \"%s\" and group \"%s\".",
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cur_user, cur_group);
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g_free(cur_user);
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g_free(cur_group);
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if (running_with_special_privs()) {
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fprintf(stderr, " This could be dangerous.");
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}
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fprintf(stderr, "\n");
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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 *configuration_init_error;
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int opt;
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static const struct ws_option long_options[] = {
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{"help", ws_no_argument, NULL, 'h'},
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{"version", ws_no_argument, NULL, 'v'},
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{0, 0, 0, 0 }
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};
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gboolean arg_error = FALSE;
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int err;
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volatile gboolean success;
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volatile int exit_status = 0;
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gboolean quiet = FALSE;
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gchar *volatile cf_name = NULL;
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gchar *rfilter = NULL;
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gchar *dfilter = NULL;
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dfilter_t *rfcode = NULL;
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dfilter_t *dfcode = NULL;
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df_error_t *df_err;
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e_prefs *prefs_p;
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gchar *output_only = NULL;
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/*
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* The leading + ensures that getopt_long() does not permute the argv[]
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* entries.
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*
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* We have to make sure that the first getopt_long() preserves the content
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* of argv[] for the subsequent getopt_long() call.
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*
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* We use getopt_long() in both cases to ensure that we're using a routine
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* whose permutation behavior we can control in the same fashion on all
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* platforms, and so that, if we ever need to process a long argument before
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* doing further initialization, we can do so.
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*
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* Glibc and Solaris libc document that a leading + disables permutation
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* of options, regardless of whether POSIXLY_CORRECT is set or not; *BSD
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* and macOS don't document it, but do so anyway.
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*
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* We do *not* use a leading - because the behavior of a leading - is
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* platform-dependent.
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*/
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#define OPTSTRING "+2C:d:e:E:hK:lo:O:qQr:R:S:t:T:u:vVxX:Y:z:"
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static const char optstring[] = OPTSTRING;
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static const struct report_message_routines tfshark_report_routines = {
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failure_message,
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failure_message,
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open_failure_message,
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read_failure_message,
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write_failure_message,
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cfile_open_failure_message,
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cfile_dump_open_failure_message,
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cfile_read_failure_message,
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cfile_write_failure_message,
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cfile_close_failure_message
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};
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/*
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* Set the C-language locale to the native environment and set the
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* code page to UTF-8 on Windows.
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*/
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#ifdef _WIN32
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setlocale(LC_ALL, ".UTF-8");
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#else
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setlocale(LC_ALL, "");
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#endif
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cmdarg_err_init(tfshark_cmdarg_err, tfshark_cmdarg_err_cont);
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/* Initialize log handler early so we can have proper logging during startup. */
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ws_log_init("tfshark", vcmdarg_err);
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/* Early logging command-line initialization. */
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ws_log_parse_args(&argc, argv, vcmdarg_err, WS_EXIT_INVALID_OPTION);
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ws_noisy("Finished log init and parsing command line log arguments");
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#ifdef _WIN32
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create_app_running_mutex();
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#endif /* _WIN32 */
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/*
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* Get credential information for later use, and drop privileges
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* before doing anything else.
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* Let the user know if anything happened.
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*/
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init_process_policies();
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relinquish_special_privs_perm();
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print_current_user();
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/*
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* Attempt to get the pathname of the directory containing the
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* executable file.
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*/
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configuration_init_error = configuration_init(argv[0], NULL);
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if (configuration_init_error != NULL) {
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fprintf(stderr,
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"tfshark: Can't get pathname of directory containing the tfshark program: %s.\n",
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configuration_init_error);
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g_free(configuration_init_error);
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}
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initialize_funnel_ops();
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/* Initialize the version information. */
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ws_init_version_info("TFShark",
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epan_gather_compile_info,
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epan_gather_runtime_info);
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/*
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* In order to have the -X opts assigned before the wslua machine starts
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* we need to call getopts before epan_init() gets called.
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*
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* In order to handle, for example, -o options, we also need to call it
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* *after* epan_init() gets called, so that the dissectors have had a
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* chance to register their preferences.
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*
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* XXX - can we do this all with one getopt_long() call, saving the
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* arguments we can't handle until after initializing libwireshark,
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* and then process them after initializing libwireshark?
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*/
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ws_opterr = 0;
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while ((opt = ws_getopt_long(argc, argv, optstring, long_options, NULL)) != -1) {
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switch (opt) {
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case 'C': /* Configuration Profile */
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if (profile_exists (ws_optarg, FALSE)) {
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set_profile_name (ws_optarg);
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} else if (profile_exists (ws_optarg, TRUE)) {
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char *pf_dir_path, *pf_dir_path2, *pf_filename;
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/* Copy from global profile */
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if (create_persconffile_profile(ws_optarg, &pf_dir_path) == -1) {
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cmdarg_err("Can't create directory\n\"%s\":\n%s.",
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pf_dir_path, g_strerror(errno));
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g_free(pf_dir_path);
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exit_status = WS_EXIT_INVALID_FILE;
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goto clean_exit;
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}
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if (copy_persconffile_profile(ws_optarg, ws_optarg, TRUE, &pf_filename,
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&pf_dir_path, &pf_dir_path2) == -1) {
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cmdarg_err("Can't copy file \"%s\" in directory\n\"%s\" to\n\"%s\":\n%s.",
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pf_filename, pf_dir_path2, pf_dir_path, g_strerror(errno));
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g_free(pf_filename);
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g_free(pf_dir_path);
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g_free(pf_dir_path2);
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exit_status = WS_EXIT_INVALID_FILE;
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goto clean_exit;
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}
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set_profile_name (ws_optarg);
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} else {
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cmdarg_err("Configuration Profile \"%s\" does not exist", ws_optarg);
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return 1;
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}
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break;
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case 'O': /* Only output these protocols */
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output_only = g_strdup(ws_optarg);
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/* FALLTHROUGH */
|
|
case 'V': /* Verbose */
|
|
print_details = TRUE;
|
|
print_packet_info = TRUE;
|
|
break;
|
|
case 'x': /* Print packet data in hex (and ASCII) */
|
|
print_hex = TRUE;
|
|
/* The user asked for hex output, so let's ensure they get it,
|
|
* even if they're writing to a file.
|
|
*/
|
|
print_packet_info = TRUE;
|
|
break;
|
|
case 'X':
|
|
ex_opt_add(ws_optarg);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Print packet summary information is the default, unless either -V or -x
|
|
* were specified. Note that this is new behavior, which
|
|
* allows for the possibility of printing only hex/ascii output without
|
|
* necessarily requiring that either the summary or details be printed too.
|
|
*/
|
|
if (print_summary == -1)
|
|
print_summary = (print_details || print_hex) ? FALSE : TRUE;
|
|
|
|
init_report_message("tfshark", &tfshark_report_routines);
|
|
|
|
timestamp_set_type(TS_RELATIVE);
|
|
timestamp_set_precision(TS_PREC_AUTO);
|
|
timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
|
|
|
|
/*
|
|
* Libwiretap must be initialized before libwireshark is, so that
|
|
* dissection-time handlers for file-type-dependent blocks can
|
|
* register using the file type/subtype value for the file type.
|
|
*
|
|
* XXX - TFShark shouldn't use libwiretap, as it's a file dissector
|
|
* and should read all files as raw bytes and then try to dissect them.
|
|
* It needs to handle file types its own way, because we would want
|
|
* to support dissecting file-type-specific blocks when dissecting
|
|
* capture files, but that mechanism should support plugins for
|
|
* other files, too, if *their* formats are extensible.
|
|
*/
|
|
wtap_init(TRUE);
|
|
|
|
/* 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. */
|
|
if (!epan_init(NULL, NULL, TRUE)) {
|
|
exit_status = WS_EXIT_INIT_FAILED;
|
|
goto clean_exit;
|
|
}
|
|
|
|
/* Register all tap listeners; we do this before we parse the arguments,
|
|
as the "-z" argument can specify a registered tap. */
|
|
|
|
/* we register the plugin taps before the other taps because
|
|
stats_tree taps plugins will be registered as tap listeners
|
|
by stats_tree_stat.c and need to registered before that */
|
|
|
|
/* XXX Disable tap registration for now until we can get tfshark set up with
|
|
* its own set of taps and the necessary registration function etc.
|
|
register_all_tap_listeners();
|
|
*/
|
|
|
|
/* If invoked with the "-G" flag, we dump out information based on
|
|
the argument to the "-G" flag; if no argument is specified,
|
|
for backwards compatibility we dump out a glossary of display
|
|
filter symbols.
|
|
|
|
XXX - we do this here, for now, to support "-G" with no arguments.
|
|
If none of our build or other processes uses "-G" with no arguments,
|
|
we can just process it with the other arguments. */
|
|
if (argc >= 2 && strcmp(argv[1], "-G") == 0) {
|
|
proto_initialize_all_prefixes();
|
|
|
|
if (argc == 2)
|
|
proto_registrar_dump_fields();
|
|
else {
|
|
if (strcmp(argv[2], "column-formats") == 0)
|
|
column_dump_column_formats();
|
|
else if (strcmp(argv[2], "currentprefs") == 0) {
|
|
epan_load_settings();
|
|
write_prefs(NULL);
|
|
}
|
|
else if (strcmp(argv[2], "decodes") == 0)
|
|
dissector_dump_decodes();
|
|
else if (strcmp(argv[2], "defaultprefs") == 0)
|
|
write_prefs(NULL);
|
|
else if (strcmp(argv[2], "dissector-tables") == 0)
|
|
dissector_dump_dissector_tables();
|
|
else if (strcmp(argv[2], "fields") == 0)
|
|
proto_registrar_dump_fields();
|
|
else if (strcmp(argv[2], "ftypes") == 0)
|
|
proto_registrar_dump_ftypes();
|
|
else if (strcmp(argv[2], "heuristic-decodes") == 0)
|
|
dissector_dump_heur_decodes();
|
|
else if (strcmp(argv[2], "plugins") == 0) {
|
|
#ifdef HAVE_PLUGINS
|
|
plugins_dump_all();
|
|
#endif
|
|
#ifdef HAVE_LUA
|
|
wslua_plugins_dump_all();
|
|
#endif
|
|
}
|
|
else if (strcmp(argv[2], "protocols") == 0)
|
|
proto_registrar_dump_protocols();
|
|
else if (strcmp(argv[2], "values") == 0)
|
|
proto_registrar_dump_values();
|
|
else if (strcmp(argv[2], "?") == 0)
|
|
glossary_option_help();
|
|
else if (strcmp(argv[2], "-?") == 0)
|
|
glossary_option_help();
|
|
else {
|
|
cmdarg_err("Invalid \"%s\" option for -G flag, enter -G ? for more help.", argv[2]);
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
}
|
|
goto clean_exit;
|
|
}
|
|
|
|
/* Load libwireshark settings from the current profile. */
|
|
prefs_p = epan_load_settings();
|
|
prefs_loaded = TRUE;
|
|
|
|
cap_file_init(&cfile);
|
|
|
|
/* Print format defaults to this. */
|
|
print_format = PR_FMT_TEXT;
|
|
|
|
output_fields = output_fields_new();
|
|
|
|
/*
|
|
* To reset the options parser, set ws_optreset to 1 and set ws_optind to 1.
|
|
*
|
|
* Also reset ws_opterr to 1, so that error messages are printed by
|
|
* getopt_long().
|
|
*/
|
|
ws_optreset = 1;
|
|
ws_optind = 1;
|
|
ws_opterr = 1;
|
|
|
|
/* Now get our args */
|
|
while ((opt = ws_getopt_long(argc, argv, optstring, long_options, NULL)) != -1) {
|
|
switch (opt) {
|
|
case '2': /* Perform two-pass analysis */
|
|
perform_two_pass_analysis = TRUE;
|
|
break;
|
|
case 'C':
|
|
/* already processed; just ignore it now */
|
|
break;
|
|
case 'e':
|
|
/* Field entry */
|
|
output_fields_add(output_fields, ws_optarg);
|
|
break;
|
|
case 'E':
|
|
/* Field option */
|
|
if (!output_fields_set_option(output_fields, ws_optarg)) {
|
|
cmdarg_err("\"%s\" is not a valid field output option=value pair.", ws_optarg);
|
|
output_fields_list_options(stderr);
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
break;
|
|
|
|
case 'h': /* Print help and exit */
|
|
show_help_header("Analyze file structure.");
|
|
print_usage(stdout);
|
|
goto clean_exit;
|
|
break;
|
|
case 'l': /* "Line-buffer" standard output */
|
|
/* 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.
|
|
|
|
The whole reason for the "-l" flag in either tcpdump or
|
|
TShark 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.
|
|
|
|
So, if the "-l" flag is 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 - arguably even
|
|
better, as it may do fewer writes. */
|
|
line_buffered = TRUE;
|
|
break;
|
|
case 'o': /* Override preference from command line */
|
|
{
|
|
char *errmsg = NULL;
|
|
|
|
switch (prefs_set_pref(ws_optarg, &errmsg)) {
|
|
|
|
case PREFS_SET_OK:
|
|
break;
|
|
|
|
case PREFS_SET_SYNTAX_ERR:
|
|
cmdarg_err("Invalid -o flag \"%s\"%s%s", ws_optarg,
|
|
errmsg ? ": " : "", errmsg ? errmsg : "");
|
|
g_free(errmsg);
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
break;
|
|
|
|
case PREFS_SET_NO_SUCH_PREF:
|
|
cmdarg_err("-o flag \"%s\" specifies unknown preference", ws_optarg);
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
break;
|
|
|
|
case PREFS_SET_OBSOLETE:
|
|
cmdarg_err("-o flag \"%s\" specifies obsolete preference", ws_optarg);
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
case 'q': /* Quiet */
|
|
quiet = TRUE;
|
|
break;
|
|
case 'Q': /* Really quiet */
|
|
quiet = TRUE;
|
|
really_quiet = TRUE;
|
|
break;
|
|
case 'r': /* Read capture file x */
|
|
cf_name = g_strdup(ws_optarg);
|
|
break;
|
|
case 'R': /* Read file filter */
|
|
rfilter = ws_optarg;
|
|
break;
|
|
case 'S': /* Set the line Separator to be printed between packets */
|
|
separator = g_strdup(ws_optarg);
|
|
break;
|
|
case 'T': /* printing Type */
|
|
if (strcmp(ws_optarg, "text") == 0) {
|
|
output_action = WRITE_TEXT;
|
|
print_format = PR_FMT_TEXT;
|
|
} else if (strcmp(ws_optarg, "ps") == 0) {
|
|
output_action = WRITE_TEXT;
|
|
print_format = PR_FMT_PS;
|
|
} else if (strcmp(ws_optarg, "pdml") == 0) {
|
|
output_action = WRITE_XML;
|
|
print_details = TRUE; /* Need details */
|
|
print_summary = FALSE; /* Don't allow summary */
|
|
} else if (strcmp(ws_optarg, "psml") == 0) {
|
|
output_action = WRITE_XML;
|
|
print_details = FALSE; /* Don't allow details */
|
|
print_summary = TRUE; /* Need summary */
|
|
} else if (strcmp(ws_optarg, "fields") == 0) {
|
|
output_action = WRITE_FIELDS;
|
|
print_details = TRUE; /* Need full tree info */
|
|
print_summary = FALSE; /* Don't allow summary */
|
|
} else {
|
|
cmdarg_err("Invalid -T parameter \"%s\"; it must be one of:", ws_optarg); /* x */
|
|
cmdarg_err_cont("\t\"fields\" The values of fields specified with the -e option, in a form\n"
|
|
"\t specified by the -E option.\n"
|
|
"\t\"pdml\" Packet Details Markup Language, an XML-based format for the\n"
|
|
"\t details of a decoded packet. This information is equivalent to\n"
|
|
"\t the packet details printed with the -V flag.\n"
|
|
"\t\"ps\" PostScript for a human-readable one-line summary of each of\n"
|
|
"\t the packets, or a multi-line view of the details of each of\n"
|
|
"\t the packets, depending on whether the -V flag was specified.\n"
|
|
"\t\"psml\" Packet Summary Markup Language, an XML-based format for the\n"
|
|
"\t summary information of a decoded packet. This information is\n"
|
|
"\t equivalent to the information shown in the one-line summary\n"
|
|
"\t printed by default.\n"
|
|
"\t\"text\" Text of a human-readable one-line summary of each of the\n"
|
|
"\t packets, or a multi-line view of the details of each of the\n"
|
|
"\t packets, depending on whether the -V flag was specified.\n"
|
|
"\t This is the default.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
break;
|
|
case 'v': /* Show version and exit */
|
|
show_version();
|
|
goto clean_exit;
|
|
case 'O': /* Only output these protocols */
|
|
/* already processed; just ignore it now */
|
|
break;
|
|
case 'V': /* Verbose */
|
|
/* already processed; just ignore it now */
|
|
break;
|
|
case 'x': /* Print packet data in hex (and ASCII) */
|
|
/* already processed; just ignore it now */
|
|
break;
|
|
case 'X':
|
|
/* already processed; just ignore it now */
|
|
break;
|
|
case 'Y':
|
|
dfilter = ws_optarg;
|
|
break;
|
|
case 'z':
|
|
/* We won't call the init function for the stat this soon
|
|
as it would disallow MATE's fields (which are registered
|
|
by the preferences set callback) from being used as
|
|
part of a tap filter. Instead, we just add the argument
|
|
to a list of stat arguments. */
|
|
if (strcmp("help", ws_optarg) == 0) {
|
|
fprintf(stderr, "tfshark: The available statistics for the \"-z\" option are:\n");
|
|
list_stat_cmd_args();
|
|
goto clean_exit;
|
|
}
|
|
if (!process_stat_cmd_arg(ws_optarg)) {
|
|
cmdarg_err("Invalid -z argument \"%s\"; it must be one of:", ws_optarg);
|
|
list_stat_cmd_args();
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
break;
|
|
case 'd': /* Decode as rule */
|
|
case 'K': /* Kerberos keytab file */
|
|
case 't': /* Time stamp type */
|
|
case 'u': /* Seconds type */
|
|
case LONGOPT_DISABLE_PROTOCOL: /* disable dissection of protocol */
|
|
case LONGOPT_ENABLE_HEURISTIC: /* enable heuristic dissection of protocol */
|
|
case LONGOPT_DISABLE_HEURISTIC: /* disable heuristic dissection of protocol */
|
|
case LONGOPT_ENABLE_PROTOCOL: /* enable dissection of protocol (that is disabled by default) */
|
|
if (!dissect_opts_handle_opt(opt, ws_optarg)) {
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
break;
|
|
default:
|
|
case '?': /* Bad flag - print usage message */
|
|
print_usage(stderr);
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* If we specified output fields, but not the output field type... */
|
|
if (WRITE_FIELDS != output_action && 0 != output_fields_num_fields(output_fields)) {
|
|
cmdarg_err("Output fields were specified with \"-e\", "
|
|
"but \"-Tfields\" was not specified.");
|
|
return 1;
|
|
} else if (WRITE_FIELDS == output_action && 0 == output_fields_num_fields(output_fields)) {
|
|
cmdarg_err("\"-Tfields\" was specified, but no fields were "
|
|
"specified with \"-e\".");
|
|
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
|
|
/* We require a -r flag specifying a file to read. */
|
|
if (cf_name == NULL) {
|
|
cmdarg_err("A file to read must be specified with \"-r\".");
|
|
exit_status = NO_FILE_SPECIFIED;
|
|
goto clean_exit;
|
|
}
|
|
|
|
/* If no display filter has been specified, and there are still command-
|
|
line arguments, treat them as the tokens of a display filter. */
|
|
if (ws_optind < argc) {
|
|
if (dfilter != NULL) {
|
|
cmdarg_err("Display filters were specified both with \"-Y\" "
|
|
"and with additional command-line arguments.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
dfilter = get_args_as_string(argc, argv, ws_optind);
|
|
}
|
|
|
|
/* if "-q" wasn't specified, we should print packet information */
|
|
if (!quiet)
|
|
print_packet_info = TRUE;
|
|
|
|
if (arg_error) {
|
|
print_usage(stderr);
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
|
|
if (print_hex) {
|
|
if (output_action != WRITE_TEXT) {
|
|
cmdarg_err("Raw packet hex data can only be printed as text or PostScript");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
}
|
|
|
|
if (output_only != NULL) {
|
|
char *ps;
|
|
|
|
if (!print_details) {
|
|
cmdarg_err("-O requires -V");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
|
|
output_only_tables = g_hash_table_new (g_str_hash, g_str_equal);
|
|
for (ps = strtok (output_only, ","); ps; ps = strtok (NULL, ",")) {
|
|
g_hash_table_insert(output_only_tables, (gpointer)ps, (gpointer)ps);
|
|
}
|
|
}
|
|
|
|
if (rfilter != NULL && !perform_two_pass_analysis) {
|
|
cmdarg_err("-R without -2 is deprecated. For single-pass filtering use -Y.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
|
|
/* 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();
|
|
|
|
/*
|
|
* Enabled and disabled protocols and heuristic dissectors as per
|
|
* command-line options.
|
|
*/
|
|
if (!setup_enabled_and_disabled_protocols()) {
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
|
|
/* Build the column format array */
|
|
build_column_format_array(&cfile.cinfo, prefs_p->num_cols, TRUE);
|
|
|
|
if (rfilter != NULL) {
|
|
if (!dfilter_compile(rfilter, &rfcode, &df_err)) {
|
|
cmdarg_err("%s", df_err->msg);
|
|
df_error_free(&df_err);
|
|
exit_status = WS_EXIT_INVALID_FILTER;
|
|
goto clean_exit;
|
|
}
|
|
}
|
|
cfile.rfcode = rfcode;
|
|
|
|
if (dfilter != NULL) {
|
|
if (!dfilter_compile(dfilter, &dfcode, &df_err)) {
|
|
cmdarg_err("%s", df_err->msg);
|
|
df_error_free(&df_err);
|
|
exit_status = WS_EXIT_INVALID_FILTER;
|
|
goto clean_exit;
|
|
}
|
|
}
|
|
cfile.dfcode = dfcode;
|
|
|
|
if (print_packet_info) {
|
|
/* If we're printing as text or PostScript, we have
|
|
to create a print stream. */
|
|
if (output_action == WRITE_TEXT) {
|
|
switch (print_format) {
|
|
|
|
case PR_FMT_TEXT:
|
|
print_stream = print_stream_text_stdio_new(stdout);
|
|
break;
|
|
|
|
case PR_FMT_PS:
|
|
print_stream = print_stream_ps_stdio_new(stdout);
|
|
break;
|
|
|
|
default:
|
|
ws_assert_not_reached();
|
|
}
|
|
}
|
|
}
|
|
|
|
/* We have to dissect each packet if:
|
|
|
|
we're printing information about each packet;
|
|
|
|
we're using a read filter on the packets;
|
|
|
|
we're using a display filter on the packets;
|
|
|
|
we're using any taps that need dissection. */
|
|
do_dissection = print_packet_info || rfcode || dfcode || tap_listeners_require_dissection();
|
|
|
|
/*
|
|
* Read the file.
|
|
*/
|
|
|
|
/* TODO: if tfshark is ever changed to give the user a choice of which
|
|
open_routine reader to use, then the following needs to change. */
|
|
if (cf_open(&cfile, cf_name, WTAP_TYPE_AUTO, FALSE, &err) != CF_OK) {
|
|
exit_status = WS_EXIT_OPEN_ERROR;
|
|
goto clean_exit;
|
|
}
|
|
|
|
/* Start statistics taps; we do so after successfully opening the
|
|
capture file, so we know we have something to compute stats
|
|
on, and after registering all dissectors, so that 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. */
|
|
start_requested_stats();
|
|
|
|
/* Process the packets in the file */
|
|
TRY {
|
|
/* XXX - for now there is only 1 packet */
|
|
success = process_file(&cfile, 1, 0);
|
|
}
|
|
CATCH(OutOfMemoryError) {
|
|
fprintf(stderr,
|
|
"Out Of Memory.\n"
|
|
"\n"
|
|
"Sorry, but TFShark has to terminate now.\n"
|
|
"\n"
|
|
"Some infos / workarounds can be found at:\n"
|
|
WS_WIKI_URL("KnownBugs/OutOfMemory") "\n");
|
|
success = FALSE;
|
|
}
|
|
ENDTRY;
|
|
|
|
if (!success) {
|
|
/* We still dump out the results of taps, etc., as we might have
|
|
read some packets; however, we exit with an error status. */
|
|
exit_status = 2;
|
|
}
|
|
|
|
g_free(cf_name);
|
|
|
|
if (cfile.provider.frames != NULL) {
|
|
free_frame_data_sequence(cfile.provider.frames);
|
|
cfile.provider.frames = NULL;
|
|
}
|
|
|
|
draw_tap_listeners(TRUE);
|
|
funnel_dump_all_text_windows();
|
|
|
|
clean_exit:
|
|
destroy_print_stream(print_stream);
|
|
epan_free(cfile.epan);
|
|
epan_cleanup();
|
|
|
|
output_fields_free(output_fields);
|
|
output_fields = NULL;
|
|
|
|
col_cleanup(&cfile.cinfo);
|
|
wtap_cleanup();
|
|
return exit_status;
|
|
}
|
|
|
|
static const nstime_t *
|
|
tfshark_get_frame_ts(struct packet_provider_data *prov, guint32 frame_num)
|
|
{
|
|
if (prov->ref && prov->ref->num == frame_num)
|
|
return &prov->ref->abs_ts;
|
|
|
|
if (prov->prev_dis && prov->prev_dis->num == frame_num)
|
|
return &prov->prev_dis->abs_ts;
|
|
|
|
if (prov->prev_cap && prov->prev_cap->num == frame_num)
|
|
return &prov->prev_cap->abs_ts;
|
|
|
|
if (prov->frames) {
|
|
frame_data *fd = frame_data_sequence_find(prov->frames, frame_num);
|
|
|
|
return (fd) ? &fd->abs_ts : NULL;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static const char *
|
|
no_interface_name(struct packet_provider_data *prov _U_, guint32 interface_id _U_)
|
|
{
|
|
return "";
|
|
}
|
|
|
|
static epan_t *
|
|
tfshark_epan_new(capture_file *cf)
|
|
{
|
|
static const struct packet_provider_funcs funcs = {
|
|
tfshark_get_frame_ts,
|
|
no_interface_name,
|
|
NULL,
|
|
NULL,
|
|
};
|
|
|
|
return epan_new(&cf->provider, &funcs);
|
|
}
|
|
|
|
static gboolean
|
|
process_packet_first_pass(capture_file *cf, epan_dissect_t *edt,
|
|
gint64 offset, wtap_rec *rec,
|
|
const guchar *pd)
|
|
{
|
|
frame_data fdlocal;
|
|
guint32 framenum;
|
|
gboolean passed;
|
|
|
|
/* The frame number of this packet is one more than the count of
|
|
frames in this packet. */
|
|
framenum = cf->count + 1;
|
|
|
|
/* If we're not running a display filter and we're not printing any
|
|
packet information, we don't need to do a dissection. This means
|
|
that all packets can be marked as 'passed'. */
|
|
passed = TRUE;
|
|
|
|
frame_data_init(&fdlocal, framenum, rec, offset, cum_bytes);
|
|
|
|
/* If we're going to print packet information, or we're going to
|
|
run a read filter, or display filter, or we're going to process taps, set up to
|
|
do a dissection and do so. */
|
|
if (edt) {
|
|
/* If we're running a read filter, prime the epan_dissect_t with that
|
|
filter. */
|
|
if (cf->rfcode)
|
|
epan_dissect_prime_with_dfilter(edt, cf->rfcode);
|
|
|
|
/* This is the first pass, so prime the epan_dissect_t with the
|
|
hfids postdissectors want on the first pass. */
|
|
prime_epan_dissect_with_postdissector_wanted_hfids(edt);
|
|
|
|
frame_data_set_before_dissect(&fdlocal, &cf->elapsed_time,
|
|
&cf->provider.ref, cf->provider.prev_dis);
|
|
if (cf->provider.ref == &fdlocal) {
|
|
ref_frame = fdlocal;
|
|
cf->provider.ref = &ref_frame;
|
|
}
|
|
|
|
epan_dissect_file_run(edt, rec,
|
|
file_tvbuff_new(&cf->provider, &fdlocal, pd),
|
|
&fdlocal, NULL);
|
|
|
|
/* Run the read filter if we have one. */
|
|
if (cf->rfcode)
|
|
passed = dfilter_apply_edt(cf->rfcode, edt);
|
|
}
|
|
|
|
if (passed) {
|
|
frame_data_set_after_dissect(&fdlocal, &cum_bytes);
|
|
cf->provider.prev_cap = cf->provider.prev_dis = frame_data_sequence_add(cf->provider.frames, &fdlocal);
|
|
|
|
/* If we're not doing dissection then there won't be any dependent frames.
|
|
* More importantly, edt.pi.fd.dependent_frames won't be initialized because
|
|
* epan hasn't been initialized.
|
|
*/
|
|
if (edt && edt->pi.fd->dependent_frames) {
|
|
g_hash_table_foreach(edt->pi.fd->dependent_frames, find_and_mark_frame_depended_upon, cf->provider.frames);
|
|
}
|
|
|
|
cf->count++;
|
|
} else {
|
|
/* if we don't add it to the frame_data_sequence, clean it up right now
|
|
* to avoid leaks */
|
|
frame_data_destroy(&fdlocal);
|
|
}
|
|
|
|
if (edt)
|
|
epan_dissect_reset(edt);
|
|
|
|
return passed;
|
|
}
|
|
|
|
static gboolean
|
|
process_packet_second_pass(capture_file *cf, epan_dissect_t *edt,
|
|
frame_data *fdata, wtap_rec *rec,
|
|
Buffer *buf)
|
|
{
|
|
column_info *cinfo;
|
|
gboolean passed;
|
|
|
|
/* If we're not running a display filter and we're not printing any
|
|
packet information, we don't need to do a dissection. This means
|
|
that all packets can be marked as 'passed'. */
|
|
passed = TRUE;
|
|
|
|
/* 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. */
|
|
if (edt) {
|
|
|
|
/* If we're running a display filter, prime the epan_dissect_t with that
|
|
filter. */
|
|
if (cf->dfcode)
|
|
epan_dissect_prime_with_dfilter(edt, cf->dfcode);
|
|
|
|
/* This is the first and only pass, so prime the epan_dissect_t
|
|
with the hfids postdissectors want on the first pass. */
|
|
prime_epan_dissect_with_postdissector_wanted_hfids(edt);
|
|
|
|
col_custom_prime_edt(edt, &cf->cinfo);
|
|
|
|
/* We only need the columns if either
|
|
1) some tap needs the columns
|
|
or
|
|
2) we're printing packet info but we're *not* verbose; in verbose
|
|
mode, we print the protocol tree, not the protocol summary.
|
|
*/
|
|
if ((tap_listeners_require_columns()) || (print_packet_info && print_summary))
|
|
cinfo = &cf->cinfo;
|
|
else
|
|
cinfo = NULL;
|
|
|
|
frame_data_set_before_dissect(fdata, &cf->elapsed_time,
|
|
&cf->provider.ref, cf->provider.prev_dis);
|
|
if (cf->provider.ref == fdata) {
|
|
ref_frame = *fdata;
|
|
cf->provider.ref = &ref_frame;
|
|
}
|
|
|
|
epan_dissect_file_run_with_taps(edt, rec,
|
|
file_tvbuff_new_buffer(&cf->provider, fdata, buf), fdata, cinfo);
|
|
|
|
/* Run the read/display filter if we have one. */
|
|
if (cf->dfcode)
|
|
passed = dfilter_apply_edt(cf->dfcode, edt);
|
|
}
|
|
|
|
if (passed) {
|
|
frame_data_set_after_dissect(fdata, &cum_bytes);
|
|
/* Process this packet. */
|
|
if (print_packet_info) {
|
|
/* We're printing packet information; print the information for
|
|
this packet. */
|
|
print_packet(cf, edt);
|
|
|
|
/* If we're doing "line-buffering", flush the standard output
|
|
after every packet. See the comment above, for the "-l"
|
|
option, for an explanation of why we do that. */
|
|
if (line_buffered)
|
|
fflush(stdout);
|
|
|
|
if (ferror(stdout)) {
|
|
show_print_file_io_error(errno);
|
|
return FALSE;
|
|
}
|
|
}
|
|
cf->provider.prev_dis = fdata;
|
|
}
|
|
cf->provider.prev_cap = fdata;
|
|
|
|
if (edt) {
|
|
epan_dissect_reset(edt);
|
|
}
|
|
return passed || fdata->dependent_of_displayed;
|
|
}
|
|
|
|
static gboolean
|
|
local_wtap_read(capture_file *cf, wtap_rec *file_rec _U_, int *err, gchar **err_info _U_, gint64 *data_offset _U_, guint8** data_buffer)
|
|
{
|
|
/* int bytes_read; */
|
|
gint64 packet_size = wtap_file_size(cf->provider.wth, err);
|
|
|
|
*data_buffer = (guint8*)g_malloc((gsize)packet_size);
|
|
/* bytes_read =*/ file_read(*data_buffer, (unsigned int)packet_size, cf->provider.wth->fh);
|
|
|
|
#if 0 /* no more filetap */
|
|
if (bytes_read < 0) {
|
|
*err = file_error(cf->provider.wth->fh, err_info);
|
|
if (*err == 0)
|
|
*err = FTAP_ERR_SHORT_READ;
|
|
return FALSE;
|
|
} else if (bytes_read == 0) {
|
|
/* Done with file, no error */
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
/* XXX - SET FRAME SIZE EQUAL TO TOTAL FILE SIZE */
|
|
file_rec->rec_header.packet_header.caplen = (guint32)packet_size;
|
|
file_rec->rec_header.packet_header.len = (guint32)packet_size;
|
|
|
|
/*
|
|
* Set the packet encapsulation to the file's encapsulation
|
|
* value; if that's not WTAP_ENCAP_PER_PACKET, it's the
|
|
* right answer (and means that the read routine for this
|
|
* capture file type doesn't have to set it), and if it
|
|
* *is* WTAP_ENCAP_PER_PACKET, the caller needs to set it
|
|
* anyway.
|
|
*/
|
|
wth->rec.rec_header.packet_header.pkt_encap = wth->file_encap;
|
|
|
|
if (!wth->subtype_read(wth, err, err_info, data_offset)) {
|
|
/*
|
|
* If we didn't get an error indication, we read
|
|
* the last packet. See if there's any deferred
|
|
* error, as might, for example, occur if we're
|
|
* reading a compressed file, and we got an error
|
|
* reading compressed data from the file, but
|
|
* got enough compressed data to decompress the
|
|
* last packet of the file.
|
|
*/
|
|
if (*err == 0)
|
|
*err = file_error(wth->fh, err_info);
|
|
return FALSE; /* failure */
|
|
}
|
|
|
|
/*
|
|
* It makes no sense for the captured data length to be bigger
|
|
* than the actual data length.
|
|
*/
|
|
if (wth->rec.rec_header.packet_header.caplen > wth->rec.rec_header.packet_header.len)
|
|
wth->rec.rec_header.packet_header.caplen = wth->rec.rec_header.packet_header.len;
|
|
|
|
/*
|
|
* Make sure that it's not WTAP_ENCAP_PER_PACKET, as that
|
|
* probably means the file has that encapsulation type
|
|
* but the read routine didn't set this packet's
|
|
* encapsulation type.
|
|
*/
|
|
ws_assert(wth->rec.rec_header.packet_header.pkt_encap != WTAP_ENCAP_PER_PACKET);
|
|
#endif
|
|
|
|
return TRUE; /* success */
|
|
}
|
|
|
|
static gboolean
|
|
process_file(capture_file *cf, int max_packet_count, gint64 max_byte_count)
|
|
{
|
|
guint32 framenum;
|
|
int err;
|
|
gchar *err_info = NULL;
|
|
gint64 data_offset = 0;
|
|
gboolean filtering_tap_listeners;
|
|
guint tap_flags;
|
|
Buffer buf;
|
|
epan_dissect_t *edt = NULL;
|
|
wtap_rec file_rec;
|
|
guint8* raw_data;
|
|
|
|
if (print_packet_info) {
|
|
if (!write_preamble(cf)) {
|
|
err = errno;
|
|
show_print_file_io_error(err);
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
/* Do we have any tap listeners with filters? */
|
|
filtering_tap_listeners = have_filtering_tap_listeners();
|
|
|
|
/* Get the union of the flags for all tap listeners. */
|
|
tap_flags = union_of_tap_listener_flags();
|
|
|
|
wtap_rec_init(&file_rec);
|
|
|
|
/* XXX - TEMPORARY HACK TO ELF DISSECTOR */
|
|
file_rec.rec_header.packet_header.pkt_encap = 1234;
|
|
|
|
if (perform_two_pass_analysis) {
|
|
frame_data *fdata;
|
|
|
|
/* Allocate a frame_data_sequence for all the frames. */
|
|
cf->provider.frames = new_frame_data_sequence();
|
|
|
|
if (do_dissection) {
|
|
gboolean create_proto_tree;
|
|
|
|
/*
|
|
* Determine whether we need to create a protocol tree.
|
|
* We do if:
|
|
*
|
|
* we're going to apply a read filter;
|
|
*
|
|
* a postdissector wants field values or protocols
|
|
* on the first pass.
|
|
*/
|
|
create_proto_tree =
|
|
(cf->rfcode != NULL || postdissectors_want_hfids());
|
|
|
|
/* We're not going to display the protocol tree on this pass,
|
|
so it's not going to be "visible". */
|
|
edt = epan_dissect_new(cf->epan, create_proto_tree, FALSE);
|
|
}
|
|
while (local_wtap_read(cf, &file_rec, &err, &err_info, &data_offset, &raw_data)) {
|
|
if (process_packet_first_pass(cf, edt, data_offset, &file_rec, raw_data)) {
|
|
|
|
/* Stop reading if we have the maximum number of packets;
|
|
* When the -c option has not been used, max_packet_count
|
|
* starts at 0, which practically means, never stop reading.
|
|
* (unless we roll over max_packet_count ?)
|
|
*/
|
|
if ( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
|
|
err = 0; /* This is not an error */
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (edt) {
|
|
epan_dissect_free(edt);
|
|
edt = NULL;
|
|
}
|
|
|
|
#if 0
|
|
/* Close the sequential I/O side, to free up memory it requires. */
|
|
wtap_sequential_close(cf->provider.wth);
|
|
#endif
|
|
|
|
/* Allow the protocol dissectors to free up memory that they
|
|
* don't need after the sequential run-through of the packets. */
|
|
postseq_cleanup_all_protocols();
|
|
|
|
cf->provider.prev_dis = NULL;
|
|
cf->provider.prev_cap = NULL;
|
|
ws_buffer_init(&buf, 1514);
|
|
|
|
if (do_dissection) {
|
|
gboolean create_proto_tree;
|
|
|
|
/*
|
|
* Determine whether we need to create a protocol tree.
|
|
* We do if:
|
|
*
|
|
* we're going to apply a display filter;
|
|
*
|
|
* we're going to print the protocol tree;
|
|
*
|
|
* one of the tap listeners requires a protocol tree;
|
|
*
|
|
* we have custom columns (which require field values, which
|
|
* currently requires that we build a protocol tree).
|
|
*/
|
|
create_proto_tree =
|
|
(cf->dfcode || print_details || filtering_tap_listeners ||
|
|
(tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo));
|
|
|
|
/* The protocol tree will be "visible", i.e., printed, only if we're
|
|
printing packet details, which is true if we're printing stuff
|
|
("print_packet_info" is true) and we're in verbose mode
|
|
("packet_details" is true). */
|
|
edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
|
|
}
|
|
|
|
for (framenum = 1; err == 0 && framenum <= cf->count; framenum++) {
|
|
fdata = frame_data_sequence_find(cf->provider.frames, framenum);
|
|
#if 0
|
|
if (wtap_seek_read(cf->provider.wth, fdata->file_off,
|
|
&buf, fdata->cap_len, &err, &err_info)) {
|
|
process_packet_second_pass(cf, edt, fdata, &cf->rec, &buf, tap_flags);
|
|
}
|
|
#else
|
|
if (!process_packet_second_pass(cf, edt, fdata, &cf->rec, &buf))
|
|
return FALSE;
|
|
#endif
|
|
}
|
|
|
|
if (edt) {
|
|
epan_dissect_free(edt);
|
|
edt = NULL;
|
|
}
|
|
|
|
ws_buffer_free(&buf);
|
|
}
|
|
else {
|
|
framenum = 0;
|
|
|
|
if (do_dissection) {
|
|
gboolean create_proto_tree;
|
|
|
|
/*
|
|
* Determine whether we need to create a protocol tree.
|
|
* We do if:
|
|
*
|
|
* we're going to apply a read filter;
|
|
*
|
|
* we're going to apply a display filter;
|
|
*
|
|
* we're going to print the protocol tree;
|
|
*
|
|
* one of the tap listeners is going to apply a filter;
|
|
*
|
|
* one of the tap listeners requires a protocol tree;
|
|
*
|
|
* a postdissector wants field values or protocols
|
|
* on the first pass;
|
|
*
|
|
* we have custom columns (which require field values, which
|
|
* currently requires that we build a protocol tree).
|
|
*/
|
|
create_proto_tree =
|
|
(cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
|
|
(tap_flags & TL_REQUIRES_PROTO_TREE) || postdissectors_want_hfids() ||
|
|
have_custom_cols(&cf->cinfo));
|
|
|
|
/* The protocol tree will be "visible", i.e., printed, only if we're
|
|
printing packet details, which is true if we're printing stuff
|
|
("print_packet_info" is true) and we're in verbose mode
|
|
("packet_details" is true). */
|
|
edt = epan_dissect_new(cf->epan, create_proto_tree, print_packet_info && print_details);
|
|
}
|
|
|
|
while (local_wtap_read(cf, &file_rec, &err, &err_info, &data_offset, &raw_data)) {
|
|
|
|
framenum++;
|
|
|
|
if (!process_packet_single_pass(cf, edt, data_offset,
|
|
&file_rec/*wtap_get_rec(cf->provider.wth)*/,
|
|
raw_data))
|
|
return FALSE;
|
|
|
|
/* Stop reading if we have the maximum number of packets;
|
|
* When the -c option has not been used, max_packet_count
|
|
* starts at 0, which practically means, never stop reading.
|
|
* (unless we roll over max_packet_count ?)
|
|
*/
|
|
if ( (--max_packet_count == 0) || (max_byte_count != 0 && data_offset >= max_byte_count)) {
|
|
err = 0; /* This is not an error */
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (edt) {
|
|
epan_dissect_free(edt);
|
|
edt = NULL;
|
|
}
|
|
}
|
|
|
|
wtap_rec_cleanup(&file_rec);
|
|
|
|
if (err != 0) {
|
|
/*
|
|
* Print a message noting that the read failed somewhere along the line.
|
|
*
|
|
* If we're printing packet data, and the standard output and error are
|
|
* going to the same place, flush the standard output, so everything
|
|
* buffered up is written, and then print a newline to the standard error
|
|
* before printing the error message, to separate it from the packet
|
|
* data. (Alas, that only works on UN*X; st_dev is meaningless, and
|
|
* the _fstat() documentation at Microsoft doesn't indicate whether
|
|
* st_ino is even supported.)
|
|
*/
|
|
#ifndef _WIN32
|
|
if (print_packet_info) {
|
|
ws_statb64 stat_stdout, stat_stderr;
|
|
|
|
if (ws_fstat64(1, &stat_stdout) == 0 && ws_fstat64(2, &stat_stderr) == 0) {
|
|
if (stat_stdout.st_dev == stat_stderr.st_dev &&
|
|
stat_stdout.st_ino == stat_stderr.st_ino) {
|
|
fflush(stdout);
|
|
fprintf(stderr, "\n");
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
#if 0
|
|
switch (err) {
|
|
|
|
case FTAP_ERR_UNSUPPORTED:
|
|
cmdarg_err("The file \"%s\" contains record data that TFShark doesn't support.\n(%s)",
|
|
cf->filename, err_info);
|
|
g_free(err_info);
|
|
break;
|
|
|
|
case FTAP_ERR_UNSUPPORTED_ENCAP:
|
|
cmdarg_err("The file \"%s\" has a packet with a network type that TFShark doesn't support.\n(%s)",
|
|
cf->filename, err_info);
|
|
g_free(err_info);
|
|
break;
|
|
|
|
case FTAP_ERR_CANT_READ:
|
|
cmdarg_err("An attempt to read from the file \"%s\" failed for some unknown reason.",
|
|
cf->filename);
|
|
break;
|
|
|
|
case FTAP_ERR_SHORT_READ:
|
|
cmdarg_err("The file \"%s\" appears to have been cut short in the middle of a packet.",
|
|
cf->filename);
|
|
break;
|
|
|
|
case FTAP_ERR_BAD_FILE:
|
|
cmdarg_err("The file \"%s\" appears to be damaged or corrupt.\n(%s)",
|
|
cf->filename, err_info);
|
|
g_free(err_info);
|
|
break;
|
|
|
|
case FTAP_ERR_DECOMPRESS:
|
|
cmdarg_err("The compressed file \"%s\" appears to be damaged or corrupt.\n"
|
|
"(%s)", cf->filename, err_info);
|
|
break;
|
|
|
|
default:
|
|
cmdarg_err("An error occurred while reading the file \"%s\": %s.",
|
|
cf->filename, ftap_strerror(err));
|
|
break;
|
|
}
|
|
#endif
|
|
} else {
|
|
if (print_packet_info) {
|
|
if (!write_finale()) {
|
|
err = errno;
|
|
show_print_file_io_error(err);
|
|
}
|
|
}
|
|
}
|
|
|
|
out:
|
|
wtap_close(cf->provider.wth);
|
|
cf->provider.wth = NULL;
|
|
|
|
return (err != 0);
|
|
}
|
|
|
|
static gboolean
|
|
process_packet_single_pass(capture_file *cf, epan_dissect_t *edt, gint64 offset,
|
|
wtap_rec *rec, const guchar *pd)
|
|
{
|
|
frame_data fdata;
|
|
column_info *cinfo;
|
|
gboolean passed;
|
|
|
|
/* Count this packet. */
|
|
cf->count++;
|
|
|
|
/* If we're not running a display filter and we're not printing any
|
|
packet information, we don't need to do a dissection. This means
|
|
that all packets can be marked as 'passed'. */
|
|
passed = TRUE;
|
|
|
|
frame_data_init(&fdata, cf->count, rec, offset, cum_bytes);
|
|
|
|
/* 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. */
|
|
if (edt) {
|
|
/* If we're running a filter, prime the epan_dissect_t with that
|
|
filter. */
|
|
if (cf->dfcode)
|
|
epan_dissect_prime_with_dfilter(edt, cf->dfcode);
|
|
|
|
col_custom_prime_edt(edt, &cf->cinfo);
|
|
|
|
/* We only need the columns if either
|
|
1) some tap needs the columns
|
|
or
|
|
2) we're printing packet info but we're *not* verbose; in verbose
|
|
mode, we print the protocol tree, not the protocol summary.
|
|
or
|
|
3) there is a column mapped as an individual field */
|
|
if ((tap_listeners_require_columns()) || (print_packet_info && print_summary) || output_fields_has_cols(output_fields))
|
|
cinfo = &cf->cinfo;
|
|
else
|
|
cinfo = NULL;
|
|
|
|
frame_data_set_before_dissect(&fdata, &cf->elapsed_time,
|
|
&cf->provider.ref, cf->provider.prev_dis);
|
|
if (cf->provider.ref == &fdata) {
|
|
ref_frame = fdata;
|
|
cf->provider.ref = &ref_frame;
|
|
}
|
|
|
|
epan_dissect_file_run_with_taps(edt, rec,
|
|
frame_tvbuff_new(&cf->provider, &fdata, pd),
|
|
&fdata, cinfo);
|
|
|
|
/* Run the filter if we have it. */
|
|
if (cf->dfcode)
|
|
passed = dfilter_apply_edt(cf->dfcode, edt);
|
|
}
|
|
|
|
if (passed) {
|
|
frame_data_set_after_dissect(&fdata, &cum_bytes);
|
|
|
|
/* Process this packet. */
|
|
if (print_packet_info) {
|
|
/* We're printing packet information; print the information for
|
|
this packet. */
|
|
print_packet(cf, edt);
|
|
|
|
/* If we're doing "line-buffering", flush the standard output
|
|
after every packet. See the comment above, for the "-l"
|
|
option, for an explanation of why we do that. */
|
|
if (line_buffered)
|
|
fflush(stdout);
|
|
|
|
if (ferror(stdout)) {
|
|
show_print_file_io_error(errno);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/* this must be set after print_packet() [bug #8160] */
|
|
prev_dis_frame = fdata;
|
|
cf->provider.prev_dis = &prev_dis_frame;
|
|
}
|
|
|
|
prev_cap_frame = fdata;
|
|
cf->provider.prev_cap = &prev_cap_frame;
|
|
|
|
if (edt) {
|
|
epan_dissect_reset(edt);
|
|
frame_data_destroy(&fdata);
|
|
}
|
|
return passed;
|
|
}
|
|
|
|
static gboolean
|
|
write_preamble(capture_file *cf)
|
|
{
|
|
switch (output_action) {
|
|
|
|
case WRITE_TEXT:
|
|
return print_preamble(print_stream, cf->filename, get_ws_vcs_version_info());
|
|
|
|
case WRITE_XML:
|
|
if (print_details)
|
|
write_pdml_preamble(stdout, cf->filename);
|
|
else
|
|
write_psml_preamble(&cf->cinfo, stdout);
|
|
return !ferror(stdout);
|
|
|
|
case WRITE_FIELDS:
|
|
write_fields_preamble(output_fields, stdout);
|
|
return !ferror(stdout);
|
|
|
|
default:
|
|
ws_assert_not_reached();
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static char *
|
|
get_line_buf(size_t len)
|
|
{
|
|
static char *line_bufp = NULL;
|
|
static size_t line_buf_len = 256;
|
|
size_t new_line_buf_len;
|
|
|
|
for (new_line_buf_len = line_buf_len; len > new_line_buf_len;
|
|
new_line_buf_len *= 2)
|
|
;
|
|
if (line_bufp == NULL) {
|
|
line_buf_len = new_line_buf_len;
|
|
line_bufp = (char *)g_malloc(line_buf_len + 1);
|
|
} else {
|
|
if (new_line_buf_len > line_buf_len) {
|
|
line_buf_len = new_line_buf_len;
|
|
line_bufp = (char *)g_realloc(line_bufp, line_buf_len + 1);
|
|
}
|
|
}
|
|
return line_bufp;
|
|
}
|
|
|
|
static inline void
|
|
put_string(char *dest, const char *str, size_t str_len)
|
|
{
|
|
memcpy(dest, str, str_len);
|
|
dest[str_len] = '\0';
|
|
}
|
|
|
|
static inline void
|
|
put_spaces_string(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
|
|
{
|
|
size_t i;
|
|
|
|
for (i = str_len; i < str_with_spaces; i++)
|
|
*dest++ = ' ';
|
|
|
|
put_string(dest, str, str_len);
|
|
}
|
|
|
|
static inline void
|
|
put_string_spaces(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
|
|
{
|
|
size_t i;
|
|
|
|
memcpy(dest, str, str_len);
|
|
for (i = str_len; i < str_with_spaces; i++)
|
|
dest[i] = ' ';
|
|
|
|
dest[str_with_spaces] = '\0';
|
|
}
|
|
|
|
static gboolean
|
|
print_columns(capture_file *cf)
|
|
{
|
|
char *line_bufp;
|
|
int i;
|
|
size_t buf_offset;
|
|
size_t column_len;
|
|
size_t col_len;
|
|
col_item_t* col_item;
|
|
|
|
line_bufp = get_line_buf(256);
|
|
buf_offset = 0;
|
|
*line_bufp = '\0';
|
|
for (i = 0; i < cf->cinfo.num_cols; i++) {
|
|
col_item = &cf->cinfo.columns[i];
|
|
/* Skip columns not marked as visible. */
|
|
if (!get_column_visible(i))
|
|
continue;
|
|
const gchar* col_text = get_column_text(&cf->cinfo, i);
|
|
switch (col_item->col_fmt) {
|
|
case COL_NUMBER:
|
|
column_len = col_len = strlen(col_text);
|
|
if (column_len < 3)
|
|
column_len = 3;
|
|
line_bufp = get_line_buf(buf_offset + column_len);
|
|
put_spaces_string(line_bufp + buf_offset, col_text, col_len, column_len);
|
|
break;
|
|
|
|
case COL_CLS_TIME:
|
|
case COL_REL_TIME:
|
|
case COL_ABS_TIME:
|
|
case COL_ABS_YMD_TIME: /* XXX - wider */
|
|
case COL_ABS_YDOY_TIME: /* XXX - wider */
|
|
case COL_UTC_TIME:
|
|
case COL_UTC_YMD_TIME: /* XXX - wider */
|
|
case COL_UTC_YDOY_TIME: /* XXX - wider */
|
|
column_len = col_len = strlen(col_text);
|
|
if (column_len < 10)
|
|
column_len = 10;
|
|
line_bufp = get_line_buf(buf_offset + column_len);
|
|
put_spaces_string(line_bufp + buf_offset, col_text, col_len, column_len);
|
|
break;
|
|
|
|
case COL_DEF_SRC:
|
|
case COL_RES_SRC:
|
|
case COL_UNRES_SRC:
|
|
case COL_DEF_DL_SRC:
|
|
case COL_RES_DL_SRC:
|
|
case COL_UNRES_DL_SRC:
|
|
case COL_DEF_NET_SRC:
|
|
case COL_RES_NET_SRC:
|
|
case COL_UNRES_NET_SRC:
|
|
column_len = col_len = strlen(col_text);
|
|
if (column_len < 12)
|
|
column_len = 12;
|
|
line_bufp = get_line_buf(buf_offset + column_len);
|
|
put_spaces_string(line_bufp + buf_offset, col_text, col_len, column_len);
|
|
break;
|
|
|
|
case COL_DEF_DST:
|
|
case COL_RES_DST:
|
|
case COL_UNRES_DST:
|
|
case COL_DEF_DL_DST:
|
|
case COL_RES_DL_DST:
|
|
case COL_UNRES_DL_DST:
|
|
case COL_DEF_NET_DST:
|
|
case COL_RES_NET_DST:
|
|
case COL_UNRES_NET_DST:
|
|
column_len = col_len = strlen(col_text);
|
|
if (column_len < 12)
|
|
column_len = 12;
|
|
line_bufp = get_line_buf(buf_offset + column_len);
|
|
put_string_spaces(line_bufp + buf_offset, col_text, col_len, column_len);
|
|
break;
|
|
|
|
default:
|
|
column_len = strlen(col_text);
|
|
line_bufp = get_line_buf(buf_offset + column_len);
|
|
put_string(line_bufp + buf_offset, col_text, column_len);
|
|
break;
|
|
}
|
|
buf_offset += column_len;
|
|
if (i != cf->cinfo.num_cols - 1) {
|
|
/*
|
|
* This isn't the last column, so we need to print a
|
|
* separator between this column and the next.
|
|
*
|
|
* If we printed a network source and are printing a
|
|
* network destination of the same type next, separate
|
|
* them with " -> "; if we printed a network destination
|
|
* and are printing a network source of the same type
|
|
* next, separate them with " <- "; otherwise separate them
|
|
* with a space.
|
|
*
|
|
* We add enough space to the buffer for " <- " or " -> ",
|
|
* even if we're only adding " ".
|
|
*/
|
|
line_bufp = get_line_buf(buf_offset + 4);
|
|
switch (col_item->col_fmt) {
|
|
|
|
case COL_DEF_SRC:
|
|
case COL_RES_SRC:
|
|
case COL_UNRES_SRC:
|
|
switch (cf->cinfo.columns[i+1].col_fmt) {
|
|
|
|
case COL_DEF_DST:
|
|
case COL_RES_DST:
|
|
case COL_UNRES_DST:
|
|
put_string(line_bufp + buf_offset, " -> ", 4);
|
|
buf_offset += 4;
|
|
break;
|
|
|
|
default:
|
|
put_string(line_bufp + buf_offset, " ", 1);
|
|
buf_offset += 1;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case COL_DEF_DL_SRC:
|
|
case COL_RES_DL_SRC:
|
|
case COL_UNRES_DL_SRC:
|
|
switch (cf->cinfo.columns[i+1].col_fmt) {
|
|
|
|
case COL_DEF_DL_DST:
|
|
case COL_RES_DL_DST:
|
|
case COL_UNRES_DL_DST:
|
|
put_string(line_bufp + buf_offset, " -> ", 4);
|
|
buf_offset += 4;
|
|
break;
|
|
|
|
default:
|
|
put_string(line_bufp + buf_offset, " ", 1);
|
|
buf_offset += 1;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case COL_DEF_NET_SRC:
|
|
case COL_RES_NET_SRC:
|
|
case COL_UNRES_NET_SRC:
|
|
switch (cf->cinfo.columns[i+1].col_fmt) {
|
|
|
|
case COL_DEF_NET_DST:
|
|
case COL_RES_NET_DST:
|
|
case COL_UNRES_NET_DST:
|
|
put_string(line_bufp + buf_offset, " -> ", 4);
|
|
buf_offset += 4;
|
|
break;
|
|
|
|
default:
|
|
put_string(line_bufp + buf_offset, " ", 1);
|
|
buf_offset += 1;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case COL_DEF_DST:
|
|
case COL_RES_DST:
|
|
case COL_UNRES_DST:
|
|
switch (cf->cinfo.columns[i+1].col_fmt) {
|
|
|
|
case COL_DEF_SRC:
|
|
case COL_RES_SRC:
|
|
case COL_UNRES_SRC:
|
|
put_string(line_bufp + buf_offset, " <- ", 4);
|
|
buf_offset += 4;
|
|
break;
|
|
|
|
default:
|
|
put_string(line_bufp + buf_offset, " ", 1);
|
|
buf_offset += 1;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case COL_DEF_DL_DST:
|
|
case COL_RES_DL_DST:
|
|
case COL_UNRES_DL_DST:
|
|
switch (cf->cinfo.columns[i+1].col_fmt) {
|
|
|
|
case COL_DEF_DL_SRC:
|
|
case COL_RES_DL_SRC:
|
|
case COL_UNRES_DL_SRC:
|
|
put_string(line_bufp + buf_offset, " <- ", 4);
|
|
buf_offset += 4;
|
|
break;
|
|
|
|
default:
|
|
put_string(line_bufp + buf_offset, " ", 1);
|
|
buf_offset += 1;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case COL_DEF_NET_DST:
|
|
case COL_RES_NET_DST:
|
|
case COL_UNRES_NET_DST:
|
|
switch (cf->cinfo.columns[i+1].col_fmt) {
|
|
|
|
case COL_DEF_NET_SRC:
|
|
case COL_RES_NET_SRC:
|
|
case COL_UNRES_NET_SRC:
|
|
put_string(line_bufp + buf_offset, " <- ", 4);
|
|
buf_offset += 4;
|
|
break;
|
|
|
|
default:
|
|
put_string(line_bufp + buf_offset, " ", 1);
|
|
buf_offset += 1;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
put_string(line_bufp + buf_offset, " ", 1);
|
|
buf_offset += 1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return print_line(print_stream, 0, line_bufp);
|
|
}
|
|
|
|
static gboolean
|
|
print_packet(capture_file *cf, epan_dissect_t *edt)
|
|
{
|
|
if (print_summary || output_fields_has_cols(output_fields)) {
|
|
/* Just fill in the columns. */
|
|
epan_dissect_fill_in_columns(edt, FALSE, TRUE);
|
|
|
|
if (print_summary) {
|
|
/* Now print them. */
|
|
switch (output_action) {
|
|
|
|
case WRITE_TEXT:
|
|
if (!print_columns(cf))
|
|
return FALSE;
|
|
break;
|
|
|
|
case WRITE_XML:
|
|
write_psml_columns(edt, stdout, FALSE);
|
|
return !ferror(stdout);
|
|
case WRITE_FIELDS: /*No non-verbose "fields" format */
|
|
ws_assert_not_reached();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (print_details) {
|
|
/* Print the information in the protocol tree. */
|
|
switch (output_action) {
|
|
|
|
case WRITE_TEXT:
|
|
if (!proto_tree_print(print_details ? print_dissections_expanded : print_dissections_none,
|
|
print_hex, edt, output_only_tables, print_stream))
|
|
return FALSE;
|
|
if (!print_hex) {
|
|
if (!print_line(print_stream, 0, separator))
|
|
return FALSE;
|
|
}
|
|
break;
|
|
|
|
case WRITE_XML:
|
|
write_pdml_proto_tree(NULL, edt, &cf->cinfo, stdout, FALSE);
|
|
printf("\n");
|
|
return !ferror(stdout);
|
|
case WRITE_FIELDS:
|
|
write_fields_proto_tree(output_fields, edt, &cf->cinfo, stdout);
|
|
printf("\n");
|
|
return !ferror(stdout);
|
|
}
|
|
}
|
|
if (print_hex) {
|
|
if (print_summary || print_details) {
|
|
if (!print_line(print_stream, 0, ""))
|
|
return FALSE;
|
|
}
|
|
if (!print_hex_data(print_stream, edt, HEXDUMP_SOURCE_MULTI | HEXDUMP_ASCII_INCLUDE))
|
|
return FALSE;
|
|
if (!print_line(print_stream, 0, separator))
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
write_finale(void)
|
|
{
|
|
switch (output_action) {
|
|
|
|
case WRITE_TEXT:
|
|
return print_finale(print_stream);
|
|
|
|
case WRITE_XML:
|
|
if (print_details)
|
|
write_pdml_finale(stdout);
|
|
else
|
|
write_psml_finale(stdout);
|
|
return !ferror(stdout);
|
|
|
|
case WRITE_FIELDS:
|
|
write_fields_finale(output_fields, stdout);
|
|
return !ferror(stdout);
|
|
|
|
default:
|
|
ws_assert_not_reached();
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
cf_status_t
|
|
cf_open(capture_file *cf, const char *fname, unsigned int type, gboolean is_tempfile, int *err _U_)
|
|
{
|
|
/* The open isn't implemented yet. Fill in the information for this file. */
|
|
|
|
/* Create new epan session for dissection. */
|
|
epan_free(cf->epan);
|
|
cf->epan = tfshark_epan_new(cf);
|
|
|
|
cf->provider.wth = NULL; /**** XXX - DOESN'T WORK RIGHT NOW!!!! */
|
|
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 = is_tempfile;
|
|
|
|
/* No user changes yet. */
|
|
cf->unsaved_changes = FALSE;
|
|
|
|
cf->cd_t = 0; /**** XXX - DOESN'T WORK RIGHT NOW!!!! */
|
|
cf->open_type = type;
|
|
cf->count = 0;
|
|
cf->drops_known = FALSE;
|
|
cf->drops = 0;
|
|
cf->snap = 0; /**** XXX - DOESN'T WORK RIGHT NOW!!!! */
|
|
nstime_set_zero(&cf->elapsed_time);
|
|
cf->provider.ref = NULL;
|
|
cf->provider.prev_dis = NULL;
|
|
cf->provider.prev_cap = NULL;
|
|
|
|
cf->state = FILE_READ_IN_PROGRESS;
|
|
|
|
return CF_OK;
|
|
|
|
/* fail: */
|
|
/*
|
|
gchar *err_info;
|
|
char err_msg[2048+1];
|
|
snprintf(err_msg, sizeof err_msg,
|
|
cf_open_error_message(*err, err_info, FALSE, cf->cd_t), fname);
|
|
cmdarg_err("%s", err_msg);
|
|
return CF_ERROR;
|
|
*/
|
|
}
|
|
|
|
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.",
|
|
g_strerror(err));
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Report an error in command-line arguments.
|
|
*/
|
|
static void
|
|
tfshark_cmdarg_err(const char *msg_format, va_list ap)
|
|
{
|
|
fprintf(stderr, "tfshark: ");
|
|
vfprintf(stderr, msg_format, ap);
|
|
fprintf(stderr, "\n");
|
|
}
|
|
|
|
/*
|
|
* Report additional information for an error in command-line arguments.
|
|
*/
|
|
static void
|
|
tfshark_cmdarg_err_cont(const char *msg_format, va_list ap)
|
|
{
|
|
vfprintf(stderr, msg_format, ap);
|
|
fprintf(stderr, "\n");
|
|
}
|