![Michael Mann](/assets/img/avatar_default.png)
GTK and TShark should already have structure initialized to 0 because they are global variables. Change-Id: I43a38c58f32967d201ddf78e450b2483f28f8bd6 Reviewed-on: https://code.wireshark.org/review/12847 Reviewed-by: Stig Bjørlykke <stig@bjorlykke.org>
4503 lines
152 KiB
C
4503 lines
152 KiB
C
/* tshark.c
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*
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* Text-mode variant of Wireshark, along the lines of tcpdump and snoop,
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* by Gilbert Ramirez <gram@alumni.rice.edu> and Guy Harris <guy@alum.mit.edu>.
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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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* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <config.h>
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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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#ifdef HAVE_GETOPT_H
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#include <getopt.h>
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#endif
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#include <errno.h>
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#ifndef _WIN32
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#include <signal.h>
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#endif
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#ifdef HAVE_LIBZ
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#include <zlib.h> /* to get the libz version number */
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#endif
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#ifdef HAVE_LIBCAP
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# include <sys/capability.h>
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#endif
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#ifndef HAVE_GETOPT_LONG
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#include "wsutil/wsgetopt.h"
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#endif
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#include <glib.h>
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#include <epan/exceptions.h>
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#include <epan/epan-int.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 <wsutil/crash_info.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_err.h>
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#include <wsutil/ws_diag_control.h>
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#include <wsutil/ws_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 "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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#ifdef HAVE_LIBPCAP
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#include "ui/capture_ui_utils.h"
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#endif
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#include "ui/util.h"
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#include "ui/ui_util.h"
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#include "ui/cli/tshark-tap.h"
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#include "register.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/conversation_table.h>
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#include <epan/srt_table.h>
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#include <epan/rtd_table.h>
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#include <epan/ex-opt.h>
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#if defined(HAVE_HEIMDAL_KERBEROS) || defined(HAVE_MIT_KERBEROS)
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#include <epan/asn1.h>
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#include <epan/dissectors/packet-kerberos.h>
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#endif
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#include "capture_opts.h"
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#include "caputils/capture-pcap-util.h"
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#ifdef HAVE_LIBPCAP
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#include "caputils/capture_ifinfo.h"
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#ifdef _WIN32
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#include "caputils/capture-wpcap.h"
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#include <wsutil/os_version_info.h>
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#include <wsutil/unicode-utils.h>
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#endif /* _WIN32 */
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#include <capchild/capture_session.h>
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#include <capchild/capture_sync.h>
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#include <capture_info.h>
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#endif /* HAVE_LIBPCAP */
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#include "log.h"
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#include <epan/funnel.h>
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#include <wsutil/str_util.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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#if 0
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#define tshark_debug(...) g_warning(__VA_ARGS__)
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#else
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#define tshark_debug(...)
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#endif
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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 guint32 cum_bytes;
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static const frame_data *ref;
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static frame_data ref_frame;
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static frame_data *prev_dis;
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static frame_data prev_dis_frame;
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static frame_data *prev_cap;
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static frame_data prev_cap_frame;
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static const char* prev_display_dissector_name = NULL;
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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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#ifdef HAVE_LIBPCAP
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/*
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* TRUE if we're to print packet counts to keep track of captured packets.
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*/
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static gboolean print_packet_counts;
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static capture_options global_capture_opts;
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static capture_session global_capture_session;
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static info_data_t global_info_data;
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#ifdef SIGINFO
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static gboolean infodelay; /* if TRUE, don't print capture info in SIGINFO handler */
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static gboolean infoprint; /* if TRUE, print capture info after clearing infodelay */
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#endif /* SIGINFO */
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static gboolean capture(void);
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static void report_counts(void);
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#ifdef _WIN32
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static BOOL WINAPI capture_cleanup(DWORD);
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#else /* _WIN32 */
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static void capture_cleanup(int);
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#ifdef SIGINFO
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static void report_counts_siginfo(int);
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#endif /* SIGINFO */
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#endif /* _WIN32 */
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#else /* HAVE_LIBPCAP */
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static char *output_file_name;
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#endif /* HAVE_LIBPCAP */
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static int load_cap_file(capture_file *, char *, int, gboolean, int, gint64);
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static gboolean process_packet(capture_file *cf, epan_dissect_t *edt, gint64 offset,
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struct wtap_pkthdr *whdr, const guchar *pd,
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guint tap_flags);
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static void show_capture_file_io_error(const char *, int, gboolean);
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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 const char *cf_open_error_message(int err, gchar *err_info,
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gboolean for_writing, int file_type);
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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 write_failure_message(const char *filename, int err);
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static void failure_message_cont(const char *msg_format, va_list ap);
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capture_file cfile;
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static GHashTable *output_only_tables = NULL;
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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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static void
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list_capture_types(void) {
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int i;
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struct string_elem *captypes;
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GSList *list = NULL;
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captypes = g_new(struct string_elem, WTAP_NUM_FILE_TYPES_SUBTYPES);
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fprintf(stderr, "tshark: The available capture file types for the \"-F\" flag are:\n");
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for (i = 0; i < WTAP_NUM_FILE_TYPES_SUBTYPES; i++) {
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if (wtap_dump_can_open(i)) {
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captypes[i].sstr = wtap_file_type_subtype_short_string(i);
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captypes[i].lstr = wtap_file_type_subtype_string(i);
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list = g_slist_insert_sorted(list, &captypes[i], string_compare);
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}
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}
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g_slist_foreach(list, string_elem_print, NULL);
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g_slist_free(list);
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g_free(captypes);
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}
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static void
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list_read_capture_types(void) {
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int i;
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struct string_elem *captypes;
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GSList *list = NULL;
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const char *magic = "Magic-value-based";
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const char *heuristic = "Heuristics-based";
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/* this is a hack, but WTAP_NUM_FILE_TYPES_SUBTYPES is always >= number of open routines so we're safe */
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captypes = g_new(struct string_elem, WTAP_NUM_FILE_TYPES_SUBTYPES);
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fprintf(stderr, "tshark: The available read file types for the \"-X read_format:\" option are:\n");
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for (i = 0; open_routines[i].name != NULL; i++) {
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captypes[i].sstr = open_routines[i].name;
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captypes[i].lstr = (open_routines[i].type == OPEN_INFO_MAGIC) ? magic : heuristic;
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list = g_slist_insert_sorted(list, &captypes[i], string_compare);
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}
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g_slist_foreach(list, string_elem_print, NULL);
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g_slist_free(list);
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g_free(captypes);
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}
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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: tshark [options] ...\n");
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fprintf(output, "\n");
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#ifdef HAVE_LIBPCAP
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fprintf(output, "Capture interface:\n");
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fprintf(output, " -i <interface> name or idx of interface (def: first non-loopback)\n");
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fprintf(output, " -f <capture filter> packet filter in libpcap filter syntax\n");
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fprintf(output, " -s <snaplen> packet snapshot length (def: 65535)\n");
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fprintf(output, " -p don't capture in promiscuous mode\n");
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#ifdef HAVE_PCAP_CREATE
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fprintf(output, " -I capture in monitor mode, if available\n");
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#endif
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#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
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fprintf(output, " -B <buffer size> size of kernel buffer (def: %dMB)\n", DEFAULT_CAPTURE_BUFFER_SIZE);
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#endif
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fprintf(output, " -y <link type> link layer type (def: first appropriate)\n");
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fprintf(output, " -D print list of interfaces and exit\n");
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fprintf(output, " -L print list of link-layer types of iface and exit\n");
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fprintf(output, "\n");
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fprintf(output, "Capture stop conditions:\n");
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fprintf(output, " -c <packet count> stop after n packets (def: infinite)\n");
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fprintf(output, " -a <autostop cond.> ... duration:NUM - stop after NUM seconds\n");
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fprintf(output, " filesize:NUM - stop this file after NUM KB\n");
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fprintf(output, " files:NUM - stop after NUM files\n");
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/*fprintf(output, "\n");*/
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fprintf(output, "Capture output:\n");
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fprintf(output, " -b <ringbuffer opt.> ... duration:NUM - switch to next file after NUM secs\n");
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fprintf(output, " filesize:NUM - switch to next file after NUM KB\n");
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fprintf(output, " files:NUM - ringbuffer: replace after NUM files\n");
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#endif /* HAVE_LIBPCAP */
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#ifdef HAVE_PCAP_REMOTE
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fprintf(output, "RPCAP options:\n");
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fprintf(output, " -A <user>:<password> use RPCAP password authentication\n");
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#endif
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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 (- to read from 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, " -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, " -n disable all name resolutions (def: all enabled)\n");
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fprintf(output, " -N <name resolve flags> enable specific name resolution(s): \"mnNtCd\"\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, " -H <hosts file> read a list of entries from a hosts file, which will\n");
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fprintf(output, " then be written to a capture file. (Implies -W n)\n");
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fprintf(output, " --disable-protocol <proto_name>\n");
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fprintf(output, " disable dissection of proto_name\n");
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fprintf(output, " --enable-heuristic <short_name>\n");
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fprintf(output, " enable dissection of heuristic protocol\n");
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fprintf(output, " --disable-heuristic <short_name>\n");
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fprintf(output, " disable dissection of heuristic protocol\n");
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/*fprintf(output, "\n");*/
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fprintf(output, "Output:\n");
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fprintf(output, " -w <outfile|-> write packets to a pcap-format file named \"outfile\"\n");
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fprintf(output, " (or to the standard output for \"-\")\n");
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fprintf(output, " -C <config profile> start with specified configuration profile\n");
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fprintf(output, " -F <output file type> set the output file type, default is pcapng\n");
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fprintf(output, " an empty \"-F\" option will list the file types\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, " -P print packet summary even when writing to a file\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, " -g enable group read access on the output file(s)\n");
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fprintf(output, " -W n Save extra information in the file, if supported.\n");
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fprintf(output, " n = write network address resolution information\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, " --capture-comment <comment>\n");
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fprintf(output, " add a capture comment to the newly created\n");
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fprintf(output, " output file (only for pcapng)\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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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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#ifdef __linux__
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fprintf(output, "\n");
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fprintf(output, "WARNING: dumpcap will enable kernel BPF JIT compiler if available.\n");
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fprintf(output, "You might want to reset it\n");
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fprintf(output, "By doing \"echo 0 > /proc/sys/net/core/bpf_jit_enable\"\n");
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fprintf(output, "\n");
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#endif
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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, "TShark (Wireshark) %s\n", get_ws_vcs_version_info());
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fprintf(output, "\n");
|
|
fprintf(output, "Usage: tshark -G [report]\n");
|
|
fprintf(output, "\n");
|
|
fprintf(output, "Glossary table reports:\n");
|
|
fprintf(output, " -G column-formats dump column format codes and exit\n");
|
|
fprintf(output, " -G decodes dump \"layer type\"/\"decode as\" associations and exit\n");
|
|
fprintf(output, " -G dissector-tables dump dissector table names, types, and properties\n");
|
|
fprintf(output, " -G fieldcount dump count of header fields and exit\n");
|
|
fprintf(output, " -G fields dump fields glossary and exit\n");
|
|
fprintf(output, " -G ftypes dump field type basic and descriptive names\n");
|
|
fprintf(output, " -G heuristic-decodes dump heuristic dissector tables\n");
|
|
fprintf(output, " -G plugins dump installed plugins and exit\n");
|
|
fprintf(output, " -G protocols dump protocols in registration database and exit\n");
|
|
fprintf(output, " -G values dump value, range, true/false strings and exit\n");
|
|
fprintf(output, "\n");
|
|
fprintf(output, "Preference reports:\n");
|
|
fprintf(output, " -G currentprefs dump current preferences and exit\n");
|
|
fprintf(output, " -G defaultprefs dump default preferences and exit\n");
|
|
fprintf(output, "\n");
|
|
}
|
|
|
|
/*
|
|
* For a dissector table, print on the stream described by output,
|
|
* its short name (which is what's used in the "-d" option) and its
|
|
* descriptive name.
|
|
*/
|
|
static void
|
|
display_dissector_table_names(const char *table_name, const char *ui_name,
|
|
gpointer output)
|
|
{
|
|
if ((prev_display_dissector_name == NULL) ||
|
|
(strcmp(prev_display_dissector_name, table_name) != 0)) {
|
|
fprintf((FILE *)output, "\t%s (%s)\n", table_name, ui_name);
|
|
prev_display_dissector_name = table_name;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* For a dissector handle, print on the stream described by output,
|
|
* the filter name (which is what's used in the "-d" option) and the full
|
|
* name for the protocol that corresponds to this handle.
|
|
*/
|
|
static void
|
|
display_dissector_names(const gchar *table _U_, gpointer handle, gpointer output)
|
|
{
|
|
int proto_id;
|
|
const gchar *proto_filter_name;
|
|
const gchar *proto_ui_name;
|
|
|
|
proto_id = dissector_handle_get_protocol_index((dissector_handle_t)handle);
|
|
|
|
if (proto_id != -1) {
|
|
proto_filter_name = proto_get_protocol_filter_name(proto_id);
|
|
proto_ui_name = proto_get_protocol_name(proto_id);
|
|
g_assert(proto_filter_name != NULL);
|
|
g_assert(proto_ui_name != NULL);
|
|
|
|
if ((prev_display_dissector_name == NULL) ||
|
|
(strcmp(prev_display_dissector_name, proto_filter_name) != 0)) {
|
|
fprintf((FILE *)output, "\t%s (%s)\n",
|
|
proto_filter_name,
|
|
proto_ui_name);
|
|
prev_display_dissector_name = proto_filter_name;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* The protocol_name_search structure is used by find_protocol_name_func()
|
|
* to pass parameters and store results
|
|
*/
|
|
struct protocol_name_search{
|
|
gchar *searched_name; /* Protocol filter name we are looking for */
|
|
dissector_handle_t matched_handle; /* Handle for a dissector whose protocol has the specified filter name */
|
|
guint nb_match; /* How many dissectors matched searched_name */
|
|
};
|
|
typedef struct protocol_name_search *protocol_name_search_t;
|
|
|
|
/*
|
|
* This function parses all dissectors associated with a table to find the
|
|
* one whose protocol has the specified filter name. It is called
|
|
* as a reference function in a call to dissector_table_foreach_handle.
|
|
* The name we are looking for, as well as the results, are stored in the
|
|
* protocol_name_search struct pointed to by user_data.
|
|
* If called using dissector_table_foreach_handle, we actually parse the
|
|
* whole list of dissectors.
|
|
*/
|
|
static void
|
|
find_protocol_name_func(const gchar *table _U_, gpointer handle, gpointer user_data)
|
|
|
|
{
|
|
int proto_id;
|
|
const gchar *protocol_filter_name;
|
|
protocol_name_search_t search_info;
|
|
|
|
g_assert(handle);
|
|
|
|
search_info = (protocol_name_search_t)user_data;
|
|
|
|
proto_id = dissector_handle_get_protocol_index((dissector_handle_t)handle);
|
|
if (proto_id != -1) {
|
|
protocol_filter_name = proto_get_protocol_filter_name(proto_id);
|
|
g_assert(protocol_filter_name != NULL);
|
|
if (strcmp(protocol_filter_name, search_info->searched_name) == 0) {
|
|
/* Found a match */
|
|
if (search_info->nb_match == 0) {
|
|
/* Record this handle only if this is the first match */
|
|
search_info->matched_handle = (dissector_handle_t)handle; /* Record the handle for this matching dissector */
|
|
}
|
|
search_info->nb_match++;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Allow dissector key names to be sorted alphabetically
|
|
*/
|
|
|
|
static gint
|
|
compare_dissector_key_name(gconstpointer dissector_a, gconstpointer dissector_b)
|
|
{
|
|
return strcmp((const char*)dissector_a, (const char*)dissector_b);
|
|
}
|
|
|
|
/*
|
|
* Print all layer type names supported.
|
|
* We send the output to the stream described by the handle output.
|
|
*/
|
|
|
|
static void
|
|
fprint_all_layer_types(FILE *output)
|
|
|
|
{
|
|
prev_display_dissector_name = NULL;
|
|
dissector_all_tables_foreach_table(display_dissector_table_names, (gpointer)output, (GCompareFunc)compare_dissector_key_name);
|
|
}
|
|
|
|
/*
|
|
* Print all protocol names supported for a specific layer type.
|
|
* table_name contains the layer type name in which the search is performed.
|
|
* We send the output to the stream described by the handle output.
|
|
*/
|
|
|
|
static void
|
|
fprint_all_protocols_for_layer_types(FILE *output, gchar *table_name)
|
|
|
|
{
|
|
prev_display_dissector_name = NULL;
|
|
dissector_table_foreach_handle(table_name,
|
|
display_dissector_names,
|
|
(gpointer)output);
|
|
}
|
|
|
|
/*
|
|
* The function below parses the command-line parameters for the decode as
|
|
* feature (a string pointer by cl_param).
|
|
* It checks the format of the command-line, searches for a matching table
|
|
* and dissector. If a table/dissector match is not found, we display a
|
|
* summary of the available tables/dissectors (on stderr) and return FALSE.
|
|
* If everything is fine, we get the "Decode as" preference activated,
|
|
* then we return TRUE.
|
|
*/
|
|
static gboolean
|
|
add_decode_as(const gchar *cl_param)
|
|
{
|
|
gchar *table_name;
|
|
guint32 selector, selector2;
|
|
gchar *decoded_param;
|
|
gchar *remaining_param;
|
|
gchar *selector_str;
|
|
gchar *dissector_str;
|
|
dissector_handle_t dissector_matching;
|
|
dissector_table_t table_matching;
|
|
ftenum_t dissector_table_selector_type;
|
|
struct protocol_name_search user_protocol_name;
|
|
guint64 i;
|
|
char op;
|
|
|
|
/* The following code will allocate and copy the command-line options in a string pointed by decoded_param */
|
|
|
|
g_assert(cl_param);
|
|
decoded_param = g_strdup(cl_param);
|
|
g_assert(decoded_param);
|
|
|
|
|
|
/* The lines below will parse this string (modifying it) to extract all
|
|
necessary information. Note that decoded_param is still needed since
|
|
strings are not copied - we just save pointers. */
|
|
|
|
/* This section extracts a layer type (table_name) from decoded_param */
|
|
table_name = decoded_param; /* Layer type string starts from beginning */
|
|
|
|
remaining_param = strchr(table_name, '=');
|
|
if (remaining_param == NULL) {
|
|
cmdarg_err("Parameter \"%s\" doesn't follow the template \"%s\"", cl_param, decode_as_arg_template);
|
|
/* If the argument does not follow the template, carry on anyway to check
|
|
if the table name is at least correct. If remaining_param is NULL,
|
|
we'll exit anyway further down */
|
|
}
|
|
else {
|
|
*remaining_param = '\0'; /* Terminate the layer type string (table_name) where '=' was detected */
|
|
}
|
|
|
|
/* Remove leading and trailing spaces from the table name */
|
|
while ( table_name[0] == ' ' )
|
|
table_name++;
|
|
while ( table_name[strlen(table_name) - 1] == ' ' )
|
|
table_name[strlen(table_name) - 1] = '\0'; /* Note: if empty string, while loop will eventually exit */
|
|
|
|
/* The following part searches a table matching with the layer type specified */
|
|
table_matching = NULL;
|
|
|
|
/* Look for the requested table */
|
|
if ( !(*(table_name)) ) { /* Is the table name empty, if so, don't even search for anything, display a message */
|
|
cmdarg_err("No layer type specified"); /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
|
|
}
|
|
else {
|
|
table_matching = find_dissector_table(table_name);
|
|
if (!table_matching) {
|
|
cmdarg_err("Unknown layer type -- %s", table_name); /* Note, we don't exit here, but table_matching will remain NULL, so we exit below */
|
|
}
|
|
}
|
|
|
|
if (!table_matching) {
|
|
/* Display a list of supported layer types to help the user, if the
|
|
specified layer type was not found */
|
|
cmdarg_err("Valid layer types are:");
|
|
fprint_all_layer_types(stderr);
|
|
}
|
|
if (remaining_param == NULL || !table_matching) {
|
|
/* Exit if the layer type was not found, or if no '=' separator was found
|
|
(see above) */
|
|
g_free(decoded_param);
|
|
return FALSE;
|
|
}
|
|
|
|
if (*(remaining_param + 1) != '=') { /* Check for "==" and not only '=' */
|
|
cmdarg_err("WARNING: -d requires \"==\" instead of \"=\". Option will be treated as \"%s==%s\"", table_name, remaining_param + 1);
|
|
}
|
|
else {
|
|
remaining_param++; /* Move to the second '=' */
|
|
*remaining_param = '\0'; /* Remove the second '=' */
|
|
}
|
|
remaining_param++; /* Position after the layer type string */
|
|
|
|
/* This section extracts a selector value (selector_str) from decoded_param */
|
|
|
|
selector_str = remaining_param; /* Next part starts with the selector number */
|
|
|
|
remaining_param = strchr(selector_str, ',');
|
|
if (remaining_param == NULL) {
|
|
cmdarg_err("Parameter \"%s\" doesn't follow the template \"%s\"", cl_param, decode_as_arg_template);
|
|
/* If the argument does not follow the template, carry on anyway to check
|
|
if the selector value is at least correct. If remaining_param is NULL,
|
|
we'll exit anyway further down */
|
|
}
|
|
else {
|
|
*remaining_param = '\0'; /* Terminate the selector number string (selector_str) where ',' was detected */
|
|
}
|
|
|
|
dissector_table_selector_type = get_dissector_table_selector_type(table_name);
|
|
|
|
switch (dissector_table_selector_type) {
|
|
|
|
case FT_UINT8:
|
|
case FT_UINT16:
|
|
case FT_UINT24:
|
|
case FT_UINT32:
|
|
/* The selector for this table is an unsigned number. Parse it as such.
|
|
There's no need to remove leading and trailing spaces from the
|
|
selector number string, because sscanf will do that for us. */
|
|
switch (sscanf(selector_str, "%u%c%u", &selector, &op, &selector2)) {
|
|
case 1:
|
|
op = '\0';
|
|
break;
|
|
case 3:
|
|
if (op != ':' && op != '-') {
|
|
cmdarg_err("Invalid selector numeric range \"%s\"", selector_str);
|
|
g_free(decoded_param);
|
|
return FALSE;
|
|
}
|
|
if (op == ':') {
|
|
if ((selector2 == 0) || ((guint64)selector + selector2 - 1) > G_MAXUINT32) {
|
|
cmdarg_err("Invalid selector numeric range \"%s\"", selector_str);
|
|
g_free(decoded_param);
|
|
return FALSE;
|
|
}
|
|
}
|
|
else if (selector2 < selector) {
|
|
/* We could swap them for the user, but maybe it's better to call
|
|
* this out as an error in case it's not what was intended? */
|
|
cmdarg_err("Invalid selector numeric range \"%s\"", selector_str);
|
|
g_free(decoded_param);
|
|
return FALSE;
|
|
}
|
|
break;
|
|
default:
|
|
cmdarg_err("Invalid selector number \"%s\"", selector_str);
|
|
g_free(decoded_param);
|
|
return FALSE;
|
|
}
|
|
break;
|
|
|
|
case FT_STRING:
|
|
case FT_STRINGZ:
|
|
case FT_UINT_STRING:
|
|
case FT_STRINGZPAD:
|
|
/* The selector for this table is a string. */
|
|
break;
|
|
|
|
default:
|
|
/* There are currently no dissector tables with any types other
|
|
than the ones listed above. */
|
|
g_assert_not_reached();
|
|
}
|
|
|
|
if (remaining_param == NULL) {
|
|
/* Exit if no ',' separator was found (see above) */
|
|
cmdarg_err("Valid protocols for layer type \"%s\" are:", table_name);
|
|
fprint_all_protocols_for_layer_types(stderr, table_name);
|
|
g_free(decoded_param);
|
|
return FALSE;
|
|
}
|
|
|
|
remaining_param++; /* Position after the selector number string */
|
|
|
|
/* This section extracts a protocol filter name (dissector_str) from decoded_param */
|
|
|
|
dissector_str = remaining_param; /* All the rest of the string is the dissector (decode as protocol) name */
|
|
|
|
/* Remove leading and trailing spaces from the dissector name */
|
|
while ( dissector_str[0] == ' ' )
|
|
dissector_str++;
|
|
while ( dissector_str[strlen(dissector_str) - 1] == ' ' )
|
|
dissector_str[strlen(dissector_str) - 1] = '\0'; /* Note: if empty string, while loop will eventually exit */
|
|
|
|
dissector_matching = NULL;
|
|
|
|
/* We now have a pointer to the handle for the requested table inside the variable table_matching */
|
|
if ( ! (*dissector_str) ) { /* Is the dissector name empty, if so, don't even search for a matching dissector and display all dissectors found for the selected table */
|
|
cmdarg_err("No protocol name specified"); /* Note, we don't exit here, but dissector_matching will remain NULL, so we exit below */
|
|
}
|
|
else {
|
|
user_protocol_name.nb_match = 0;
|
|
user_protocol_name.searched_name = dissector_str;
|
|
user_protocol_name.matched_handle = NULL;
|
|
|
|
dissector_table_foreach_handle(table_name, find_protocol_name_func, &user_protocol_name); /* Go and perform the search for this dissector in the this table's dissectors' names and shortnames */
|
|
|
|
if (user_protocol_name.nb_match != 0) {
|
|
dissector_matching = user_protocol_name.matched_handle;
|
|
if (user_protocol_name.nb_match > 1) {
|
|
cmdarg_err("WARNING: Protocol \"%s\" matched %u dissectors, first one will be used", dissector_str, user_protocol_name.nb_match);
|
|
}
|
|
}
|
|
else {
|
|
/* OK, check whether the problem is that there isn't any such
|
|
protocol, or that there is but it's not specified as a protocol
|
|
that's valid for that dissector table.
|
|
Note, we don't exit here, but dissector_matching will remain NULL,
|
|
so we exit below */
|
|
if (proto_get_id_by_filter_name(dissector_str) == -1) {
|
|
/* No such protocol */
|
|
cmdarg_err("Unknown protocol -- \"%s\"", dissector_str);
|
|
} else {
|
|
cmdarg_err("Protocol \"%s\" isn't valid for layer type \"%s\"",
|
|
dissector_str, table_name);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!dissector_matching) {
|
|
cmdarg_err("Valid protocols for layer type \"%s\" are:", table_name);
|
|
fprint_all_protocols_for_layer_types(stderr, table_name);
|
|
g_free(decoded_param);
|
|
return FALSE;
|
|
}
|
|
|
|
/* This is the end of the code that parses the command-line options.
|
|
All information is now stored in the variables:
|
|
table_name
|
|
selector
|
|
dissector_matching
|
|
The above variables that are strings are still pointing to areas within
|
|
decoded_parm. decoded_parm thus still needs to be kept allocated in
|
|
until we stop needing these variables
|
|
decoded_param will be deallocated at each exit point of this function */
|
|
|
|
|
|
/* We now have a pointer to the handle for the requested dissector
|
|
(requested protocol) inside the variable dissector_matching */
|
|
switch (dissector_table_selector_type) {
|
|
|
|
case FT_UINT8:
|
|
case FT_UINT16:
|
|
case FT_UINT24:
|
|
case FT_UINT32:
|
|
/* The selector for this table is an unsigned number. */
|
|
if (op == '\0') {
|
|
dissector_change_uint(table_name, selector, dissector_matching);
|
|
} else if (op == ':') {
|
|
for (i = selector; i < (guint64)selector + selector2; i++) {
|
|
dissector_change_uint(table_name, (guint32)i, dissector_matching);
|
|
}
|
|
} else { /* op == '-' */
|
|
for (i = selector; i <= selector2; i++) {
|
|
dissector_change_uint(table_name, (guint32)i, dissector_matching);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case FT_STRING:
|
|
case FT_STRINGZ:
|
|
case FT_UINT_STRING:
|
|
case FT_STRINGZPAD:
|
|
/* The selector for this table is a string. */
|
|
dissector_change_string(table_name, selector_str, dissector_matching);
|
|
break;
|
|
|
|
default:
|
|
/* There are currently no dissector tables with any types other
|
|
than the ones listed above. */
|
|
g_assert_not_reached();
|
|
}
|
|
g_free(decoded_param); /* "Decode As" rule has been successfully added */
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
tshark_log_handler (const gchar *log_domain, GLogLevelFlags log_level,
|
|
const gchar *message, gpointer user_data)
|
|
{
|
|
/* ignore log message, if log_level isn't interesting based
|
|
upon the console log preferences.
|
|
If the preferences haven't been loaded loaded yet, display the
|
|
message anyway.
|
|
|
|
The default console_log_level preference value is such that only
|
|
ERROR, CRITICAL and WARNING level messages are processed;
|
|
MESSAGE, INFO and DEBUG level messages are ignored.
|
|
|
|
XXX: Aug 07, 2009: Prior tshark g_log code was hardwired to process only
|
|
ERROR and CRITICAL level messages so the current code is a behavioral
|
|
change. The current behavior is the same as in Wireshark.
|
|
*/
|
|
if ((log_level & G_LOG_LEVEL_MASK & prefs.console_log_level) == 0 &&
|
|
prefs.console_log_level != 0) {
|
|
return;
|
|
}
|
|
|
|
g_log_default_handler(log_domain, log_level, message, user_data);
|
|
|
|
}
|
|
|
|
static char *
|
|
output_file_description(const char *fname)
|
|
{
|
|
char *save_file_string;
|
|
|
|
/* Get a string that describes what we're writing to */
|
|
if (strcmp(fname, "-") == 0) {
|
|
/* We're writing to the standard output */
|
|
save_file_string = g_strdup("standard output");
|
|
} else {
|
|
/* We're writing to a file with the name in save_file */
|
|
save_file_string = g_strdup_printf("file \"%s\"", fname);
|
|
}
|
|
return save_file_string;
|
|
}
|
|
|
|
static void
|
|
print_current_user(void) {
|
|
gchar *cur_user, *cur_group;
|
|
|
|
if (started_with_special_privs()) {
|
|
cur_user = get_cur_username();
|
|
cur_group = get_cur_groupname();
|
|
fprintf(stderr, "Running as user \"%s\" and group \"%s\".",
|
|
cur_user, cur_group);
|
|
g_free(cur_user);
|
|
g_free(cur_group);
|
|
if (running_with_special_privs()) {
|
|
fprintf(stderr, " This could be dangerous.");
|
|
}
|
|
fprintf(stderr, "\n");
|
|
}
|
|
}
|
|
|
|
static void
|
|
get_tshark_compiled_version_info(GString *str)
|
|
{
|
|
/* Capture libraries */
|
|
get_compiled_caplibs_version(str);
|
|
|
|
/* LIBZ */
|
|
g_string_append(str, ", ");
|
|
#ifdef HAVE_LIBZ
|
|
g_string_append(str, "with libz ");
|
|
#ifdef ZLIB_VERSION
|
|
g_string_append(str, ZLIB_VERSION);
|
|
#else /* ZLIB_VERSION */
|
|
g_string_append(str, "(version unknown)");
|
|
#endif /* ZLIB_VERSION */
|
|
#else /* HAVE_LIBZ */
|
|
g_string_append(str, "without libz");
|
|
#endif /* HAVE_LIBZ */
|
|
}
|
|
|
|
static void
|
|
get_tshark_runtime_version_info(GString *str)
|
|
{
|
|
#ifdef HAVE_LIBPCAP
|
|
/* Capture libraries */
|
|
g_string_append(str, ", ");
|
|
get_runtime_caplibs_version(str);
|
|
#endif
|
|
|
|
/* zlib */
|
|
#if defined(HAVE_LIBZ) && !defined(_WIN32)
|
|
g_string_append_printf(str, ", with libz %s", zlibVersion());
|
|
#endif
|
|
|
|
/* stuff used by libwireshark */
|
|
epan_get_runtime_version_info(str);
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
GString *comp_info_str;
|
|
GString *runtime_info_str;
|
|
char *init_progfile_dir_error;
|
|
int opt;
|
|
static const struct option long_options[] = {
|
|
{"help", no_argument, NULL, 'h'},
|
|
{"version", no_argument, NULL, 'v'},
|
|
LONGOPT_CAPTURE_COMMON
|
|
{0, 0, 0, 0 }
|
|
};
|
|
gboolean arg_error = FALSE;
|
|
|
|
#ifdef _WIN32
|
|
WSADATA wsaData;
|
|
#endif /* _WIN32 */
|
|
|
|
char *gpf_path, *pf_path;
|
|
char *gdp_path, *dp_path;
|
|
int gpf_open_errno, gpf_read_errno;
|
|
int pf_open_errno, pf_read_errno;
|
|
int gdp_open_errno, gdp_read_errno;
|
|
int dp_open_errno, dp_read_errno;
|
|
int err;
|
|
volatile int exit_status = 0;
|
|
#ifdef HAVE_LIBPCAP
|
|
gboolean list_link_layer_types = FALSE;
|
|
gboolean start_capture = FALSE;
|
|
int status;
|
|
GList *if_list;
|
|
gchar *err_str;
|
|
#else
|
|
gboolean capture_option_specified = FALSE;
|
|
#endif
|
|
gboolean quiet = FALSE;
|
|
#ifdef PCAP_NG_DEFAULT
|
|
volatile int out_file_type = WTAP_FILE_TYPE_SUBTYPE_PCAPNG;
|
|
#else
|
|
volatile int out_file_type = WTAP_FILE_TYPE_SUBTYPE_PCAP;
|
|
#endif
|
|
volatile gboolean out_file_name_res = FALSE;
|
|
volatile int in_file_type = WTAP_TYPE_AUTO;
|
|
gchar *volatile cf_name = NULL;
|
|
gchar *rfilter = NULL;
|
|
gchar *dfilter = NULL;
|
|
#ifdef HAVE_PCAP_OPEN_DEAD
|
|
struct bpf_program fcode;
|
|
#endif
|
|
dfilter_t *rfcode = NULL;
|
|
dfilter_t *dfcode = NULL;
|
|
gchar *err_msg;
|
|
e_prefs *prefs_p;
|
|
char badopt;
|
|
int log_flags;
|
|
gchar *output_only = NULL;
|
|
GSList *disable_protocol_slist = NULL;
|
|
GSList *enable_heur_slist = NULL;
|
|
GSList *disable_heur_slist = NULL;
|
|
|
|
/*
|
|
* The leading + ensures that getopt_long() does not permute the argv[]
|
|
* entries.
|
|
*
|
|
* We have to make sure that the first getopt_long() preserves the content
|
|
* of argv[] for the subsequent getopt_long() call.
|
|
*
|
|
* We use getopt_long() in both cases to ensure that we're using a routine
|
|
* whose permutation behavior we can control in the same fashion on all
|
|
* platforms, and so that, if we ever need to process a long argument before
|
|
* doing further initialization, we can do so.
|
|
*
|
|
* Glibc and Solaris libc document that a leading + disables permutation
|
|
* of options, regardless of whether POSIXLY_CORRECT is set or not; *BSD
|
|
* and OS X don't document it, but do so anyway.
|
|
*
|
|
* We do *not* use a leading - because the behavior of a leading - is
|
|
* platform-dependent.
|
|
*/
|
|
#define OPTSTRING "+2" OPTSTRING_CAPTURE_COMMON "C:d:e:E:F:gG:hH:" "K:lnN:o:O:PqQr:R:S:t:T:u:vVw:W:xX:Y:z:"
|
|
|
|
static const char optstring[] = OPTSTRING;
|
|
|
|
tshark_debug("tshark started with %d args", argc);
|
|
|
|
/* Set the C-language locale to the native environment. */
|
|
setlocale(LC_ALL, "");
|
|
|
|
cmdarg_err_init(failure_message, failure_message_cont);
|
|
|
|
#ifdef _WIN32
|
|
arg_list_utf_16to8(argc, argv);
|
|
create_app_running_mutex();
|
|
#if !GLIB_CHECK_VERSION(2,31,0)
|
|
g_thread_init(NULL);
|
|
#endif
|
|
#endif /* _WIN32 */
|
|
|
|
/*
|
|
* Get credential information for later use, and drop privileges
|
|
* before doing anything else.
|
|
* Let the user know if anything happened.
|
|
*/
|
|
init_process_policies();
|
|
relinquish_special_privs_perm();
|
|
print_current_user();
|
|
|
|
/*
|
|
* Attempt to get the pathname of the executable file.
|
|
*/
|
|
init_progfile_dir_error = init_progfile_dir(argv[0], main);
|
|
if (init_progfile_dir_error != NULL) {
|
|
fprintf(stderr, "tshark: Can't get pathname of tshark program: %s.\n",
|
|
init_progfile_dir_error);
|
|
}
|
|
|
|
initialize_funnel_ops();
|
|
|
|
#ifdef _WIN32
|
|
/* Load wpcap if possible. Do this before collecting the run-time version information */
|
|
load_wpcap();
|
|
|
|
/* Warn the user if npf.sys isn't loaded. */
|
|
if (!npf_sys_is_running() && get_windows_major_version() >= 6) {
|
|
fprintf(stderr, "The NPF driver isn't running. You may have trouble "
|
|
"capturing or\nlisting interfaces.\n");
|
|
}
|
|
#endif
|
|
|
|
/* Get the compile-time version information string */
|
|
comp_info_str = get_compiled_version_info(get_tshark_compiled_version_info,
|
|
epan_get_compiled_version_info);
|
|
|
|
/* Get the run-time version information string */
|
|
runtime_info_str = get_runtime_version_info(get_tshark_runtime_version_info);
|
|
|
|
/* Add it to the information to be reported on a crash. */
|
|
ws_add_crash_info("TShark (Wireshark) %s\n"
|
|
"\n"
|
|
"%s"
|
|
"\n"
|
|
"%s",
|
|
get_ws_vcs_version_info(), comp_info_str->str, runtime_info_str->str);
|
|
g_string_free(comp_info_str, TRUE);
|
|
g_string_free(runtime_info_str, TRUE);
|
|
|
|
/*
|
|
* In order to have the -X opts assigned before the wslua machine starts
|
|
* we need to call getopt_long before epan_init() gets called.
|
|
*
|
|
* In order to handle, for example, -o options, we also need to call it
|
|
* *after* epan_init() gets called, so that the dissectors have had a
|
|
* chance to register their preferences.
|
|
*
|
|
* XXX - can we do this all with one getopt_long() call, saving the
|
|
* arguments we can't handle until after initializing libwireshark,
|
|
* and then process them after initializing libwireshark?
|
|
*/
|
|
opterr = 0;
|
|
|
|
while ((opt = getopt_long(argc, argv, optstring, long_options, NULL)) != -1) {
|
|
switch (opt) {
|
|
case 'C': /* Configuration Profile */
|
|
if (profile_exists (optarg, FALSE)) {
|
|
set_profile_name (optarg);
|
|
} else {
|
|
cmdarg_err("Configuration Profile \"%s\" does not exist", optarg);
|
|
return 1;
|
|
}
|
|
break;
|
|
case 'P': /* Print packet summary info even when writing to a file */
|
|
print_packet_info = TRUE;
|
|
print_summary = TRUE;
|
|
break;
|
|
case 'O': /* Only output these protocols */
|
|
output_only = g_strdup(optarg);
|
|
/* 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(optarg);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Print packet summary information is the default, unless either -V or -x
|
|
* were specified and -P was not. 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;
|
|
|
|
/** Send All g_log messages to our own handler **/
|
|
|
|
log_flags =
|
|
G_LOG_LEVEL_ERROR|
|
|
G_LOG_LEVEL_CRITICAL|
|
|
G_LOG_LEVEL_WARNING|
|
|
G_LOG_LEVEL_MESSAGE|
|
|
G_LOG_LEVEL_INFO|
|
|
G_LOG_LEVEL_DEBUG|
|
|
G_LOG_FLAG_FATAL|G_LOG_FLAG_RECURSION;
|
|
|
|
g_log_set_handler(NULL,
|
|
(GLogLevelFlags)log_flags,
|
|
tshark_log_handler, NULL /* user_data */);
|
|
g_log_set_handler(LOG_DOMAIN_MAIN,
|
|
(GLogLevelFlags)log_flags,
|
|
tshark_log_handler, NULL /* user_data */);
|
|
|
|
#ifdef HAVE_LIBPCAP
|
|
g_log_set_handler(LOG_DOMAIN_CAPTURE,
|
|
(GLogLevelFlags)log_flags,
|
|
tshark_log_handler, NULL /* user_data */);
|
|
g_log_set_handler(LOG_DOMAIN_CAPTURE_CHILD,
|
|
(GLogLevelFlags)log_flags,
|
|
tshark_log_handler, NULL /* user_data */);
|
|
#endif
|
|
|
|
init_report_err(failure_message, open_failure_message, read_failure_message,
|
|
write_failure_message);
|
|
|
|
#ifdef HAVE_LIBPCAP
|
|
capture_opts_init(&global_capture_opts);
|
|
capture_session_init(&global_capture_session, &cfile);
|
|
#endif
|
|
|
|
timestamp_set_type(TS_RELATIVE);
|
|
timestamp_set_precision(TS_PREC_AUTO);
|
|
timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
|
|
|
|
init_open_routines();
|
|
|
|
#ifdef HAVE_PLUGINS
|
|
/* Register all the plugin types we have. */
|
|
epan_register_plugin_types(); /* Types known to libwireshark */
|
|
wtap_register_plugin_types(); /* Types known to libwiretap */
|
|
|
|
/* Scan for plugins. This does *not* call their registration routines;
|
|
that's done later. */
|
|
scan_plugins();
|
|
|
|
/* Register all libwiretap plugin modules. */
|
|
register_all_wiretap_modules();
|
|
#endif
|
|
|
|
/* 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(register_all_protocols, register_all_protocol_handoffs, NULL,
|
|
NULL))
|
|
return 2;
|
|
|
|
/* 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 */
|
|
#ifdef HAVE_PLUGINS
|
|
register_all_plugin_tap_listeners();
|
|
#endif
|
|
register_all_tap_listeners();
|
|
conversation_table_set_gui_info(init_iousers);
|
|
hostlist_table_set_gui_info(init_hostlists);
|
|
srt_table_iterate_tables(register_srt_tables, NULL);
|
|
rtd_table_iterate_tables(register_rtd_tables, NULL);
|
|
new_stat_tap_iterate_tables(register_simple_stat_tables, NULL);
|
|
|
|
/* 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) {
|
|
read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
|
|
&pf_open_errno, &pf_read_errno, &pf_path);
|
|
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], "fieldcount") == 0) {
|
|
/* return value for the test suite */
|
|
return proto_registrar_dump_fieldcount();
|
|
} 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]);
|
|
return 1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
tshark_debug("tshark reading preferences");
|
|
|
|
prefs_p = 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, g_strerror(gpf_open_errno));
|
|
}
|
|
if (gpf_read_errno != 0) {
|
|
cmdarg_err("I/O error reading global preferences file \"%s\": %s.",
|
|
pf_path, g_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,
|
|
g_strerror(pf_open_errno));
|
|
}
|
|
if (pf_read_errno != 0) {
|
|
cmdarg_err("I/O error reading your preferences file \"%s\": %s.",
|
|
pf_path, g_strerror(pf_read_errno));
|
|
}
|
|
g_free(pf_path);
|
|
pf_path = NULL;
|
|
}
|
|
|
|
/* 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);
|
|
read_disabled_heur_dissector_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, g_strerror(gdp_open_errno));
|
|
}
|
|
if (gdp_read_errno != 0) {
|
|
cmdarg_err("I/O error reading global disabled protocols file\n\"%s\": %s.",
|
|
gdp_path, g_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,
|
|
g_strerror(dp_open_errno));
|
|
}
|
|
if (dp_read_errno != 0) {
|
|
cmdarg_err(
|
|
"I/O error reading your disabled protocols file\n\"%s\": %s.", dp_path,
|
|
g_strerror(dp_read_errno));
|
|
}
|
|
g_free(dp_path);
|
|
}
|
|
|
|
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 optreset to 1 on platforms that
|
|
* have optreset (documented in *BSD and OS X, apparently present but
|
|
* not documented in Solaris - the Illumos repository seems to
|
|
* suggest that the first Solaris getopt_long(), at least as of 2004,
|
|
* was based on the NetBSD one, it had optreset) and set optind to 1,
|
|
* and set optind to 0 otherwise (documented as working in the GNU
|
|
* getopt_long(). Setting optind to 0 didn't originally work in the
|
|
* NetBSD one, but that was added later - we don't want to depend on
|
|
* it if we have optreset).
|
|
*
|
|
* Also reset opterr to 1, so that error messages are printed by
|
|
* getopt_long().
|
|
*/
|
|
#ifdef HAVE_OPTRESET
|
|
optreset = 1;
|
|
optind = 1;
|
|
#else
|
|
optind = 0;
|
|
#endif
|
|
opterr = 1;
|
|
|
|
/* Now get our args */
|
|
while ((opt = getopt_long(argc, argv, optstring, long_options, NULL)) != -1) {
|
|
switch (opt) {
|
|
case '2': /* Perform two pass analysis */
|
|
perform_two_pass_analysis = TRUE;
|
|
break;
|
|
case 'a': /* autostop criteria */
|
|
case 'b': /* Ringbuffer option */
|
|
case 'c': /* Capture x packets */
|
|
case 'f': /* capture filter */
|
|
case 'g': /* enable group read access on file(s) */
|
|
case 'i': /* Use interface x */
|
|
case 'p': /* Don't capture in promiscuous mode */
|
|
#ifdef HAVE_PCAP_REMOTE
|
|
case 'A': /* Authentication */
|
|
#endif
|
|
#ifdef HAVE_PCAP_CREATE
|
|
case 'I': /* Capture in monitor mode, if available */
|
|
#endif
|
|
case 's': /* Set the snapshot (capture) length */
|
|
case 'w': /* Write to capture file x */
|
|
case 'y': /* Set the pcap data link type */
|
|
case LONGOPT_NUM_CAP_COMMENT: /* add a capture comment */
|
|
#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
|
|
case 'B': /* Buffer size */
|
|
#endif
|
|
#ifdef HAVE_LIBPCAP
|
|
status = capture_opts_add_opt(&global_capture_opts, opt, optarg, &start_capture);
|
|
if (status != 0) {
|
|
return status;
|
|
}
|
|
#else
|
|
if (opt == 'w') {
|
|
/*
|
|
* Output file name, if we're reading a file and writing to another
|
|
* file.
|
|
*/
|
|
output_file_name = optarg;
|
|
} else {
|
|
capture_option_specified = TRUE;
|
|
arg_error = TRUE;
|
|
}
|
|
#endif
|
|
break;
|
|
case 'C':
|
|
/* already processed; just ignore it now */
|
|
break;
|
|
case 'd': /* Decode as rule */
|
|
if (!add_decode_as(optarg))
|
|
return 1;
|
|
break;
|
|
#if defined(HAVE_HEIMDAL_KERBEROS) || defined(HAVE_MIT_KERBEROS)
|
|
case 'K': /* Kerberos keytab file */
|
|
read_keytab_file(optarg);
|
|
break;
|
|
#endif
|
|
case 'D': /* Print a list of capture devices and exit */
|
|
#ifdef HAVE_LIBPCAP
|
|
if_list = capture_interface_list(&err, &err_str,NULL);
|
|
if (if_list == NULL) {
|
|
if (err == 0)
|
|
cmdarg_err("There are no interfaces on which a capture can be done");
|
|
else {
|
|
cmdarg_err("%s", err_str);
|
|
g_free(err_str);
|
|
}
|
|
return 2;
|
|
}
|
|
capture_opts_print_interfaces(if_list);
|
|
free_interface_list(if_list);
|
|
return 0;
|
|
#else
|
|
capture_option_specified = TRUE;
|
|
arg_error = TRUE;
|
|
#endif
|
|
break;
|
|
case 'e':
|
|
/* Field entry */
|
|
output_fields_add(output_fields, optarg);
|
|
break;
|
|
case 'E':
|
|
/* Field option */
|
|
if (!output_fields_set_option(output_fields, optarg)) {
|
|
cmdarg_err("\"%s\" is not a valid field output option=value pair.", optarg);
|
|
output_fields_list_options(stderr);
|
|
return 1;
|
|
}
|
|
break;
|
|
case 'F':
|
|
out_file_type = wtap_short_string_to_file_type_subtype(optarg);
|
|
if (out_file_type < 0) {
|
|
cmdarg_err("\"%s\" isn't a valid capture file type", optarg);
|
|
list_capture_types();
|
|
return 1;
|
|
}
|
|
break;
|
|
case 'W': /* Select extra information to save in our capture file */
|
|
/* This is patterned after the -N flag which may not be the best idea. */
|
|
if (strchr(optarg, 'n')) {
|
|
out_file_name_res = TRUE;
|
|
} else {
|
|
cmdarg_err("Invalid -W argument \"%s\"; it must be one of:", optarg);
|
|
cmdarg_err_cont("\t'n' write network address resolution information (pcapng only)");
|
|
return 1;
|
|
}
|
|
break;
|
|
case 'H': /* Read address to name mappings from a hosts file */
|
|
if (! add_hosts_file(optarg))
|
|
{
|
|
cmdarg_err("Can't read host entries from \"%s\"", optarg);
|
|
return 1;
|
|
}
|
|
out_file_name_res = TRUE;
|
|
break;
|
|
|
|
case 'h': /* Print help and exit */
|
|
printf("TShark (Wireshark) %s\n"
|
|
"Dump and analyze network traffic.\n"
|
|
"See https://www.wireshark.org for more information.\n",
|
|
get_ws_vcs_version_info());
|
|
print_usage(stdout);
|
|
return 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 'L': /* Print list of link-layer types and exit */
|
|
#ifdef HAVE_LIBPCAP
|
|
list_link_layer_types = TRUE;
|
|
#else
|
|
capture_option_specified = TRUE;
|
|
arg_error = TRUE;
|
|
#endif
|
|
break;
|
|
case 'n': /* No name resolution */
|
|
disable_name_resolution();
|
|
break;
|
|
case 'N': /* Select what types of addresses/port #s to resolve */
|
|
badopt = string_to_name_resolve(optarg, &gbl_resolv_flags);
|
|
if (badopt != '\0') {
|
|
cmdarg_err("-N specifies unknown resolving option '%c'; valid options are:",
|
|
badopt);
|
|
cmdarg_err_cont("\t'C' to enable concurrent (asynchronous) DNS lookups\n"
|
|
"\t'd' to enable address resolution from captured DNS packets\n"
|
|
"\t'm' to enable MAC address resolution\n"
|
|
"\t'n' to enable network address resolution\n"
|
|
"\t'N' to enable using external resolvers (e.g., DNS)\n"
|
|
"\t for network address resolution\n"
|
|
"\t't' to enable transport-layer port number resolution");
|
|
return 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);
|
|
return 1;
|
|
break;
|
|
|
|
case PREFS_SET_NO_SUCH_PREF:
|
|
case PREFS_SET_OBSOLETE:
|
|
cmdarg_err("-o flag \"%s\" specifies unknown preference", optarg);
|
|
return 1;
|
|
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(optarg);
|
|
break;
|
|
case 'R': /* Read file filter */
|
|
rfilter = optarg;
|
|
break;
|
|
case 'P':
|
|
/* already processed; just ignore it now */
|
|
break;
|
|
case 'S': /* Set the line Separator to be printed between packets */
|
|
separator = optarg;
|
|
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_YMD);
|
|
else if (strcmp(optarg, "adoy") == 0)
|
|
timestamp_set_type(TS_ABSOLUTE_WITH_YDOY);
|
|
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 if (strcmp(optarg, "u") == 0)
|
|
timestamp_set_type(TS_UTC);
|
|
else if (strcmp(optarg, "ud") == 0)
|
|
timestamp_set_type(TS_UTC_WITH_YMD);
|
|
else if (strcmp(optarg, "udoy") == 0)
|
|
timestamp_set_type(TS_UTC_WITH_YDOY);
|
|
else {
|
|
cmdarg_err("Invalid time stamp type \"%s\"; it must be one of:", optarg);
|
|
cmdarg_err_cont("\t\"a\" for absolute\n"
|
|
"\t\"ad\" for absolute with YYYY-MM-DD date\n"
|
|
"\t\"adoy\" for absolute with YYYY/DOY date\n"
|
|
"\t\"d\" for delta\n"
|
|
"\t\"dd\" for delta displayed\n"
|
|
"\t\"e\" for epoch\n"
|
|
"\t\"r\" for relative\n"
|
|
"\t\"u\" for absolute UTC\n"
|
|
"\t\"ud\" for absolute UTC with YYYY-MM-DD date\n"
|
|
"\t\"udoy\" for absolute UTC with YYYY/DOY date");
|
|
return 1;
|
|
}
|
|
break;
|
|
case 'T': /* printing Type */
|
|
print_packet_info = TRUE;
|
|
if (strcmp(optarg, "text") == 0) {
|
|
output_action = WRITE_TEXT;
|
|
print_format = PR_FMT_TEXT;
|
|
} else if (strcmp(optarg, "ps") == 0) {
|
|
output_action = WRITE_TEXT;
|
|
print_format = PR_FMT_PS;
|
|
} else if (strcmp(optarg, "pdml") == 0) {
|
|
output_action = WRITE_XML;
|
|
print_details = TRUE; /* Need details */
|
|
print_summary = FALSE; /* Don't allow summary */
|
|
} else if (strcmp(optarg, "psml") == 0) {
|
|
output_action = WRITE_XML;
|
|
print_details = FALSE; /* Don't allow details */
|
|
print_summary = TRUE; /* Need summary */
|
|
} else if (strcmp(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:", 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.");
|
|
return 1;
|
|
}
|
|
break;
|
|
case 'u': /* Seconds type */
|
|
if (strcmp(optarg, "s") == 0)
|
|
timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
|
|
else if (strcmp(optarg, "hms") == 0)
|
|
timestamp_set_seconds_type(TS_SECONDS_HOUR_MIN_SEC);
|
|
else {
|
|
cmdarg_err("Invalid seconds type \"%s\"; it must be one of:", optarg);
|
|
cmdarg_err_cont("\t\"s\" for seconds\n"
|
|
"\t\"hms\" for hours, minutes and seconds");
|
|
return 1;
|
|
}
|
|
break;
|
|
case 'v': /* Show version and exit */
|
|
comp_info_str = get_compiled_version_info(get_tshark_compiled_version_info,
|
|
epan_get_compiled_version_info);
|
|
runtime_info_str = get_runtime_version_info(get_tshark_runtime_version_info);
|
|
show_version("TShark (Wireshark)", comp_info_str, runtime_info_str);
|
|
g_string_free(comp_info_str, TRUE);
|
|
g_string_free(runtime_info_str, TRUE);
|
|
/* We don't really have to cleanup here, but it's a convenient way to test
|
|
* start-up and shut-down of the epan library without any UI-specific
|
|
* cruft getting in the way. Makes the results of running
|
|
* $ ./tools/valgrind-wireshark -n
|
|
* much more useful. */
|
|
epan_cleanup();
|
|
return 0;
|
|
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 = 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", optarg) == 0) {
|
|
fprintf(stderr, "tshark: The available statistics for the \"-z\" option are:\n");
|
|
list_stat_cmd_args();
|
|
return 0;
|
|
}
|
|
if (!process_stat_cmd_arg(optarg)) {
|
|
cmdarg_err("Invalid -z argument \"%s\"; it must be one of:", optarg);
|
|
list_stat_cmd_args();
|
|
return 1;
|
|
}
|
|
break;
|
|
case LONGOPT_DISABLE_PROTOCOL: /* disable dissection of protocol */
|
|
disable_protocol_slist = g_slist_append(disable_protocol_slist, optarg);
|
|
break;
|
|
case LONGOPT_ENABLE_HEURISTIC: /* enable heuristic dissection of protocol */
|
|
enable_heur_slist = g_slist_append(enable_heur_slist, optarg);
|
|
break;
|
|
case LONGOPT_DISABLE_HEURISTIC: /* disable heuristic dissection of protocol */
|
|
disable_heur_slist = g_slist_append(disable_heur_slist, optarg);
|
|
break;
|
|
|
|
default:
|
|
case '?': /* Bad flag - print usage message */
|
|
switch(optopt) {
|
|
case 'F':
|
|
list_capture_types();
|
|
break;
|
|
default:
|
|
print_usage(stderr);
|
|
}
|
|
return 1;
|
|
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\".");
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* If no capture filter or display 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 display filter (if a "-r"
|
|
flag was specified. */
|
|
if (optind < argc) {
|
|
if (cf_name != NULL) {
|
|
if (dfilter != NULL) {
|
|
cmdarg_err("Display filters were specified both with \"-d\" "
|
|
"and with additional command-line arguments.");
|
|
return 1;
|
|
}
|
|
dfilter = get_args_as_string(argc, argv, optind);
|
|
} else {
|
|
#ifdef HAVE_LIBPCAP
|
|
guint i;
|
|
|
|
if (global_capture_opts.default_options.cfilter) {
|
|
cmdarg_err("A default capture filter was specified both with \"-f\""
|
|
" and with additional command-line arguments.");
|
|
return 1;
|
|
}
|
|
for (i = 0; i < global_capture_opts.ifaces->len; i++) {
|
|
interface_options interface_opts;
|
|
interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
|
|
if (interface_opts.cfilter == NULL) {
|
|
interface_opts.cfilter = get_args_as_string(argc, argv, optind);
|
|
global_capture_opts.ifaces = g_array_remove_index(global_capture_opts.ifaces, i);
|
|
g_array_insert_val(global_capture_opts.ifaces, i, interface_opts);
|
|
} else {
|
|
cmdarg_err("A capture filter was specified both with \"-f\""
|
|
" and with additional command-line arguments.");
|
|
return 1;
|
|
}
|
|
}
|
|
global_capture_opts.default_options.cfilter = get_args_as_string(argc, argv, optind);
|
|
#else
|
|
capture_option_specified = TRUE;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
#ifdef HAVE_LIBPCAP
|
|
if (!global_capture_opts.saving_to_file) {
|
|
/* We're not saving the capture to a file; if "-q" wasn't specified,
|
|
we should print packet information */
|
|
if (!quiet)
|
|
print_packet_info = TRUE;
|
|
} else {
|
|
/* We're saving to a file; if we're writing to the standard output.
|
|
and we'll also be writing dissected packets to the standard
|
|
output, reject the request. At best, we could redirect that
|
|
to the standard error; we *can't* write both to the standard
|
|
output and have either of them be useful. */
|
|
if (strcmp(global_capture_opts.save_file, "-") == 0 && print_packet_info) {
|
|
cmdarg_err("You can't write both raw packet data and dissected packets"
|
|
" to the standard output.");
|
|
return 1;
|
|
}
|
|
}
|
|
#else
|
|
/* We're not saving the capture to a file; if "-q" wasn't specified,
|
|
we should print packet information */
|
|
if (!quiet)
|
|
print_packet_info = TRUE;
|
|
#endif
|
|
|
|
#ifndef HAVE_LIBPCAP
|
|
if (capture_option_specified)
|
|
cmdarg_err("This version of TShark was not built with support for capturing packets.");
|
|
#endif
|
|
if (arg_error) {
|
|
print_usage(stderr);
|
|
return 1;
|
|
}
|
|
|
|
if (print_hex) {
|
|
if (output_action != WRITE_TEXT) {
|
|
cmdarg_err("Raw packet hex data can only be printed as text or PostScript");
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
if (output_only != NULL) {
|
|
char *ps;
|
|
|
|
if (!print_details) {
|
|
cmdarg_err("-O requires -V");
|
|
return 1;
|
|
}
|
|
|
|
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.");
|
|
return 1;
|
|
}
|
|
|
|
#ifdef HAVE_LIBPCAP
|
|
if (list_link_layer_types) {
|
|
/* We're supposed to list the link-layer types for an interface;
|
|
did the user also specify a capture file to be read? */
|
|
if (cf_name) {
|
|
/* Yes - that's bogus. */
|
|
cmdarg_err("You can't specify -L and a capture file to be read.");
|
|
return 1;
|
|
}
|
|
/* No - did they specify a ring buffer option? */
|
|
if (global_capture_opts.multi_files_on) {
|
|
cmdarg_err("Ring buffer requested, but a capture isn't being done.");
|
|
return 1;
|
|
}
|
|
} else {
|
|
if (cf_name) {
|
|
/*
|
|
* "-r" was specified, so we're reading a capture file.
|
|
* Capture options don't apply here.
|
|
*/
|
|
|
|
/* We don't support capture filters when reading from a capture file
|
|
(the BPF compiler doesn't support all link-layer types that we
|
|
support in capture files we read). */
|
|
if (global_capture_opts.default_options.cfilter) {
|
|
cmdarg_err("Only read filters, not capture filters, "
|
|
"can be specified when reading a capture file.");
|
|
return 1;
|
|
}
|
|
if (global_capture_opts.multi_files_on) {
|
|
cmdarg_err("Multiple capture files requested, but "
|
|
"a capture isn't being done.");
|
|
return 1;
|
|
}
|
|
if (global_capture_opts.has_file_duration) {
|
|
cmdarg_err("Switching capture files after a time interval was specified, but "
|
|
"a capture isn't being done.");
|
|
return 1;
|
|
}
|
|
if (global_capture_opts.has_ring_num_files) {
|
|
cmdarg_err("A ring buffer of capture files was specified, but "
|
|
"a capture isn't being done.");
|
|
return 1;
|
|
}
|
|
if (global_capture_opts.has_autostop_files) {
|
|
cmdarg_err("A maximum number of capture files was specified, but "
|
|
"a capture isn't being done.");
|
|
return 1;
|
|
}
|
|
if (global_capture_opts.capture_comment) {
|
|
cmdarg_err("A capture comment was specified, but "
|
|
"a capture isn't being done.\nThere's no support for adding "
|
|
"a capture comment to an existing capture file.");
|
|
return 1;
|
|
}
|
|
|
|
/* Note: TShark now allows the restriction of a _read_ file by packet count
|
|
* and byte count as well as a write file. Other autostop options remain valid
|
|
* only for a write file.
|
|
*/
|
|
if (global_capture_opts.has_autostop_duration) {
|
|
cmdarg_err("A maximum capture time was specified, but "
|
|
"a capture isn't being done.");
|
|
return 1;
|
|
}
|
|
} else {
|
|
/*
|
|
* "-r" wasn't specified, so we're doing a live capture.
|
|
*/
|
|
if (perform_two_pass_analysis) {
|
|
/* Two-pass analysis doesn't work with live capture since it requires us
|
|
* to buffer packets until we've read all of them, but a live capture
|
|
* has no useful/meaningful definition of "all" */
|
|
cmdarg_err("Live captures do not support two-pass analysis.");
|
|
return 1;
|
|
}
|
|
|
|
if (global_capture_opts.saving_to_file) {
|
|
/* They specified a "-w" flag, so we'll be saving to a capture file. */
|
|
|
|
/* When capturing, we only support writing pcap or pcap-ng format. */
|
|
if (out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAP &&
|
|
out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAPNG) {
|
|
cmdarg_err("Live captures can only be saved in pcap or pcapng format.");
|
|
return 1;
|
|
}
|
|
if (global_capture_opts.capture_comment &&
|
|
out_file_type != WTAP_FILE_TYPE_SUBTYPE_PCAPNG) {
|
|
cmdarg_err("A capture comment can only be written to a pcapng file.");
|
|
return 1;
|
|
}
|
|
if (global_capture_opts.multi_files_on) {
|
|
/* Multiple-file mode doesn't work under certain conditions:
|
|
a) it doesn't work if you're writing to the standard output;
|
|
b) it doesn't work if you're writing to a pipe;
|
|
*/
|
|
if (strcmp(global_capture_opts.save_file, "-") == 0) {
|
|
cmdarg_err("Multiple capture files requested, but "
|
|
"the capture is being written to the standard output.");
|
|
return 1;
|
|
}
|
|
if (global_capture_opts.output_to_pipe) {
|
|
cmdarg_err("Multiple capture files requested, but "
|
|
"the capture file is a pipe.");
|
|
return 1;
|
|
}
|
|
if (!global_capture_opts.has_autostop_filesize &&
|
|
!global_capture_opts.has_file_duration) {
|
|
cmdarg_err("Multiple capture files requested, but "
|
|
"no maximum capture file size or duration was specified.");
|
|
return 1;
|
|
}
|
|
}
|
|
/* Currently, we don't support read or display filters when capturing
|
|
and saving the packets. */
|
|
if (rfilter != NULL) {
|
|
cmdarg_err("Read filters aren't supported when capturing and saving the captured packets.");
|
|
return 1;
|
|
}
|
|
if (dfilter != NULL) {
|
|
cmdarg_err("Display filters aren't supported when capturing and saving the captured packets.");
|
|
return 1;
|
|
}
|
|
global_capture_opts.use_pcapng = (out_file_type == WTAP_FILE_TYPE_SUBTYPE_PCAPNG) ? TRUE : FALSE;
|
|
} else {
|
|
/* They didn't specify a "-w" flag, so we won't be saving to a
|
|
capture file. Check for options that only make sense if
|
|
we're saving to a file. */
|
|
if (global_capture_opts.has_autostop_filesize) {
|
|
cmdarg_err("Maximum capture file size specified, but "
|
|
"capture isn't being saved to a file.");
|
|
return 1;
|
|
}
|
|
if (global_capture_opts.multi_files_on) {
|
|
cmdarg_err("Multiple capture files requested, but "
|
|
"the capture isn't being saved to a file.");
|
|
return 1;
|
|
}
|
|
if (global_capture_opts.capture_comment) {
|
|
cmdarg_err("A capture comment was specified, but "
|
|
"the capture isn't being saved to a file.");
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#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();
|
|
|
|
/* At this point MATE will have registered its field array so we can
|
|
check if the fields specified by the user are all good.
|
|
*/
|
|
{
|
|
GSList* it = NULL;
|
|
GSList *invalid_fields = output_fields_valid(output_fields);
|
|
if (invalid_fields != NULL) {
|
|
|
|
cmdarg_err("Some fields aren't valid:");
|
|
for (it=invalid_fields; it != NULL; it = g_slist_next(it)) {
|
|
cmdarg_err_cont("\t%s", (gchar *)it->data);
|
|
}
|
|
g_slist_free(invalid_fields);
|
|
return 1;
|
|
}
|
|
}
|
|
#ifdef HAVE_LIBPCAP
|
|
/* We currently don't support taps, or printing dissected packets,
|
|
if we're writing to a pipe. */
|
|
if (global_capture_opts.saving_to_file &&
|
|
global_capture_opts.output_to_pipe) {
|
|
if (tap_listeners_require_dissection()) {
|
|
cmdarg_err("Taps aren't supported when saving to a pipe.");
|
|
return 1;
|
|
}
|
|
if (print_packet_info) {
|
|
cmdarg_err("Printing dissected packets isn't supported when saving to a pipe.");
|
|
return 1;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (ex_opt_count("read_format") > 0) {
|
|
const gchar* name = ex_opt_get_next("read_format");
|
|
in_file_type = open_info_name_to_type(name);
|
|
if (in_file_type == WTAP_TYPE_AUTO) {
|
|
cmdarg_err("\"%s\" isn't a valid read file format type", name? name : "");
|
|
list_read_capture_types();
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
/* disabled protocols as per configuration file */
|
|
if (gdp_path == NULL && dp_path == NULL) {
|
|
set_disabled_protos_list();
|
|
set_disabled_heur_dissector_list();
|
|
}
|
|
|
|
if(disable_protocol_slist) {
|
|
GSList *proto_disable;
|
|
for (proto_disable = disable_protocol_slist; proto_disable != NULL; proto_disable = g_slist_next(proto_disable))
|
|
{
|
|
proto_disable_proto_by_name((char*)proto_disable->data);
|
|
}
|
|
}
|
|
|
|
if(enable_heur_slist) {
|
|
GSList *heur_enable;
|
|
for (heur_enable = enable_heur_slist; heur_enable != NULL; heur_enable = g_slist_next(heur_enable))
|
|
{
|
|
proto_enable_heuristic_by_name((char*)heur_enable->data, TRUE);
|
|
}
|
|
}
|
|
|
|
if(disable_heur_slist) {
|
|
GSList *heur_disable;
|
|
for (heur_disable = disable_heur_slist; heur_disable != NULL; heur_disable = g_slist_next(heur_disable))
|
|
{
|
|
proto_enable_heuristic_by_name((char*)heur_disable->data, FALSE);
|
|
}
|
|
}
|
|
|
|
/* Build the column format array */
|
|
build_column_format_array(&cfile.cinfo, prefs_p->num_cols, TRUE);
|
|
|
|
#ifdef HAVE_LIBPCAP
|
|
capture_opts_trim_snaplen(&global_capture_opts, MIN_PACKET_SIZE);
|
|
capture_opts_trim_ring_num_files(&global_capture_opts);
|
|
#endif
|
|
|
|
if (rfilter != NULL) {
|
|
tshark_debug("Compiling read filter: '%s'", rfilter);
|
|
if (!dfilter_compile(rfilter, &rfcode, &err_msg)) {
|
|
cmdarg_err("%s", err_msg);
|
|
g_free(err_msg);
|
|
epan_cleanup();
|
|
#ifdef HAVE_PCAP_OPEN_DEAD
|
|
{
|
|
pcap_t *pc;
|
|
|
|
pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
|
|
if (pc != NULL) {
|
|
if (pcap_compile(pc, &fcode, rfilter, 0, 0) != -1) {
|
|
cmdarg_err_cont(
|
|
" Note: That read filter code looks like a valid capture filter;\n"
|
|
" maybe you mixed them up?");
|
|
}
|
|
pcap_close(pc);
|
|
}
|
|
}
|
|
#endif
|
|
return 2;
|
|
}
|
|
}
|
|
cfile.rfcode = rfcode;
|
|
|
|
if (dfilter != NULL) {
|
|
tshark_debug("Compiling display filter: '%s'", dfilter);
|
|
if (!dfilter_compile(dfilter, &dfcode, &err_msg)) {
|
|
cmdarg_err("%s", err_msg);
|
|
g_free(err_msg);
|
|
epan_cleanup();
|
|
#ifdef HAVE_PCAP_OPEN_DEAD
|
|
{
|
|
pcap_t *pc;
|
|
|
|
pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
|
|
if (pc != NULL) {
|
|
if (pcap_compile(pc, &fcode, dfilter, 0, 0) != -1) {
|
|
cmdarg_err_cont(
|
|
" Note: That display filter code looks like a valid capture filter;\n"
|
|
" maybe you mixed them up?");
|
|
}
|
|
pcap_close(pc);
|
|
}
|
|
}
|
|
#endif
|
|
return 2;
|
|
}
|
|
}
|
|
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:
|
|
g_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();
|
|
tshark_debug("tshark: do_dissection = %s", do_dissection ? "TRUE" : "FALSE");
|
|
|
|
if (cf_name) {
|
|
tshark_debug("tshark: Opening capture file: %s", cf_name);
|
|
/*
|
|
* We're reading a capture file.
|
|
*/
|
|
if (cf_open(&cfile, cf_name, in_file_type, FALSE, &err) != CF_OK) {
|
|
epan_cleanup();
|
|
return 2;
|
|
}
|
|
|
|
/* Process the packets in the file */
|
|
tshark_debug("tshark: invoking load_cap_file() to process the packets");
|
|
TRY {
|
|
#ifdef HAVE_LIBPCAP
|
|
err = load_cap_file(&cfile, global_capture_opts.save_file, out_file_type, out_file_name_res,
|
|
global_capture_opts.has_autostop_packets ? global_capture_opts.autostop_packets : 0,
|
|
global_capture_opts.has_autostop_filesize ? global_capture_opts.autostop_filesize : 0);
|
|
#else
|
|
err = load_cap_file(&cfile, output_file_name, out_file_type, out_file_name_res, 0, 0);
|
|
#endif
|
|
}
|
|
CATCH(OutOfMemoryError) {
|
|
fprintf(stderr,
|
|
"Out Of Memory.\n"
|
|
"\n"
|
|
"Sorry, but TShark has to terminate now.\n"
|
|
"\n"
|
|
"More information and workarounds can be found at\n"
|
|
"https://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
|
|
err = ENOMEM;
|
|
}
|
|
ENDTRY;
|
|
if (err != 0) {
|
|
/* 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;
|
|
}
|
|
} else {
|
|
tshark_debug("tshark: no capture file specified");
|
|
/* No capture file specified, so we're supposed to do a live capture
|
|
or get a list of link-layer types for a live capture device;
|
|
do we have support for live captures? */
|
|
#ifdef HAVE_LIBPCAP
|
|
/* if no interface was specified, pick a default */
|
|
exit_status = capture_opts_default_iface_if_necessary(&global_capture_opts,
|
|
((prefs_p->capture_device) && (*prefs_p->capture_device != '\0')) ? get_if_name(prefs_p->capture_device) : NULL);
|
|
if (exit_status != 0)
|
|
return exit_status;
|
|
|
|
/* if requested, list the link layer types and exit */
|
|
if (list_link_layer_types) {
|
|
guint i;
|
|
|
|
/* Get the list of link-layer types for the capture devices. */
|
|
for (i = 0; i < global_capture_opts.ifaces->len; i++) {
|
|
interface_options interface_opts;
|
|
if_capabilities_t *caps;
|
|
char *auth_str = NULL;
|
|
|
|
interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
|
|
#ifdef HAVE_PCAP_REMOTE
|
|
if (interface_opts.auth_type == CAPTURE_AUTH_PWD) {
|
|
auth_str = g_strdup_printf("%s:%s", interface_opts.auth_username, interface_opts.auth_password);
|
|
}
|
|
#endif
|
|
caps = capture_get_if_capabilities(interface_opts.name, interface_opts.monitor_mode, auth_str, &err_str, NULL);
|
|
g_free(auth_str);
|
|
if (caps == NULL) {
|
|
cmdarg_err("%s", err_str);
|
|
g_free(err_str);
|
|
return 2;
|
|
}
|
|
if (caps->data_link_types == NULL) {
|
|
cmdarg_err("The capture device \"%s\" has no data link types.", interface_opts.name);
|
|
return 2;
|
|
}
|
|
capture_opts_print_if_capabilities(caps, interface_opts.name, interface_opts.monitor_mode);
|
|
free_if_capabilities(caps);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* If the standard error isn't a terminal, don't print packet counts,
|
|
* as they won't show up on the user's terminal and they'll get in
|
|
* the way of error messages in the file (to which we assume the
|
|
* standard error was redirected; if it's redirected to the null
|
|
* device, there's no point in printing packet counts anyway).
|
|
*
|
|
* Otherwise, if we're printing packet information and the standard
|
|
* output is a terminal (which we assume means the standard output and
|
|
* error are going to the same terminal), don't print packet counts,
|
|
* as they'll get in the way of the packet information.
|
|
*
|
|
* Otherwise, if the user specified -q, don't print packet counts.
|
|
*
|
|
* Otherwise, print packet counts.
|
|
*
|
|
* XXX - what if the user wants to do a live capture, doesn't want
|
|
* to save it to a file, doesn't want information printed for each
|
|
* packet, does want some "-z" statistic, and wants packet counts
|
|
* so they know whether they're seeing any packets? -q will
|
|
* suppress the information printed for each packet, but it'll
|
|
* also suppress the packet counts.
|
|
*/
|
|
if (!isatty(fileno(stderr)))
|
|
print_packet_counts = FALSE;
|
|
else if (print_packet_info && isatty(fileno(stdout)))
|
|
print_packet_counts = FALSE;
|
|
else if (quiet)
|
|
print_packet_counts = FALSE;
|
|
else
|
|
print_packet_counts = TRUE;
|
|
|
|
if (print_packet_info) {
|
|
if (!write_preamble(&cfile)) {
|
|
show_print_file_io_error(errno);
|
|
return 2;
|
|
}
|
|
}
|
|
|
|
tshark_debug("tshark: performing live capture");
|
|
/*
|
|
* XXX - this returns FALSE if an error occurred, but it also
|
|
* returns FALSE if the capture stops because a time limit
|
|
* was reached (and possibly other limits), so we can't assume
|
|
* it means an error.
|
|
*
|
|
* The capture code is a bit twisty, so it doesn't appear to
|
|
* be an easy fix. We just ignore the return value for now.
|
|
* Instead, pass on the exit status from the capture child.
|
|
*/
|
|
capture();
|
|
exit_status = global_capture_session.fork_child_status;
|
|
|
|
if (print_packet_info) {
|
|
if (!write_finale()) {
|
|
err = errno;
|
|
show_print_file_io_error(err);
|
|
}
|
|
}
|
|
#else
|
|
/* No - complain. */
|
|
cmdarg_err("This version of TShark was not built with support for capturing packets.");
|
|
return 2;
|
|
#endif
|
|
}
|
|
|
|
g_free(cf_name);
|
|
|
|
if (cfile.frames != NULL) {
|
|
free_frame_data_sequence(cfile.frames);
|
|
cfile.frames = NULL;
|
|
}
|
|
|
|
draw_tap_listeners(TRUE);
|
|
funnel_dump_all_text_windows();
|
|
epan_free(cfile.epan);
|
|
epan_cleanup();
|
|
|
|
output_fields_free(output_fields);
|
|
output_fields = NULL;
|
|
|
|
return exit_status;
|
|
}
|
|
|
|
/*#define USE_BROKEN_G_MAIN_LOOP*/
|
|
|
|
#ifdef USE_BROKEN_G_MAIN_LOOP
|
|
GMainLoop *loop;
|
|
#else
|
|
gboolean loop_running = FALSE;
|
|
#endif
|
|
guint32 packet_count = 0;
|
|
|
|
|
|
typedef struct pipe_input_tag {
|
|
gint source;
|
|
gpointer user_data;
|
|
ws_process_id *child_process;
|
|
pipe_input_cb_t input_cb;
|
|
guint pipe_input_id;
|
|
#ifdef _WIN32
|
|
GMutex *callback_running;
|
|
#endif
|
|
} pipe_input_t;
|
|
|
|
static pipe_input_t pipe_input;
|
|
|
|
#ifdef _WIN32
|
|
/* The timer has expired, see if there's stuff to read from the pipe,
|
|
if so, do the callback */
|
|
static gint
|
|
pipe_timer_cb(gpointer data)
|
|
{
|
|
HANDLE handle;
|
|
DWORD avail = 0;
|
|
gboolean result;
|
|
DWORD childstatus;
|
|
pipe_input_t *pipe_input_p = data;
|
|
gint iterations = 0;
|
|
|
|
g_mutex_lock (pipe_input_p->callback_running);
|
|
|
|
/* try to read data from the pipe only 5 times, to avoid blocking */
|
|
while(iterations < 5) {
|
|
/*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: new iteration");*/
|
|
|
|
/* Oddly enough although Named pipes don't work on win9x,
|
|
PeekNamedPipe does !!! */
|
|
handle = (HANDLE) _get_osfhandle (pipe_input_p->source);
|
|
result = PeekNamedPipe(handle, NULL, 0, NULL, &avail, NULL);
|
|
|
|
/* Get the child process exit status */
|
|
GetExitCodeProcess((HANDLE)*(pipe_input_p->child_process),
|
|
&childstatus);
|
|
|
|
/* If the Peek returned an error, or there are bytes to be read
|
|
or the childwatcher thread has terminated then call the normal
|
|
callback */
|
|
if (!result || avail > 0 || childstatus != STILL_ACTIVE) {
|
|
|
|
/*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: data avail");*/
|
|
|
|
/* And call the real handler */
|
|
if (!pipe_input_p->input_cb(pipe_input_p->source, pipe_input_p->user_data)) {
|
|
g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: input pipe closed, iterations: %u", iterations);
|
|
/* pipe closed, return false so that the timer is stopped */
|
|
g_mutex_unlock (pipe_input_p->callback_running);
|
|
return FALSE;
|
|
}
|
|
}
|
|
else {
|
|
/*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: no data avail");*/
|
|
/* No data, stop now */
|
|
break;
|
|
}
|
|
|
|
iterations++;
|
|
}
|
|
|
|
/*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: finished with iterations: %u, new timer", iterations);*/
|
|
|
|
g_mutex_unlock (pipe_input_p->callback_running);
|
|
|
|
/* we didn't stopped the timer, so let it run */
|
|
return TRUE;
|
|
}
|
|
#endif
|
|
|
|
|
|
void
|
|
pipe_input_set_handler(gint source, gpointer user_data, ws_process_id *child_process, pipe_input_cb_t input_cb)
|
|
{
|
|
|
|
pipe_input.source = source;
|
|
pipe_input.child_process = child_process;
|
|
pipe_input.user_data = user_data;
|
|
pipe_input.input_cb = input_cb;
|
|
|
|
#ifdef _WIN32
|
|
#if GLIB_CHECK_VERSION(2,31,0)
|
|
pipe_input.callback_running = g_malloc(sizeof(GMutex));
|
|
g_mutex_init(pipe_input.callback_running);
|
|
#else
|
|
pipe_input.callback_running = g_mutex_new();
|
|
#endif
|
|
/* Tricky to use pipes in win9x, as no concept of wait. NT can
|
|
do this but that doesn't cover all win32 platforms. GTK can do
|
|
this but doesn't seem to work over processes. Attempt to do
|
|
something similar here, start a timer and check for data on every
|
|
timeout. */
|
|
/*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_input_set_handler: new");*/
|
|
pipe_input.pipe_input_id = g_timeout_add(200, pipe_timer_cb, &pipe_input);
|
|
#endif
|
|
}
|
|
|
|
static const nstime_t *
|
|
tshark_get_frame_ts(void *data, guint32 frame_num)
|
|
{
|
|
capture_file *cf = (capture_file *) data;
|
|
|
|
if (ref && ref->num == frame_num)
|
|
return &ref->abs_ts;
|
|
|
|
if (prev_dis && prev_dis->num == frame_num)
|
|
return &prev_dis->abs_ts;
|
|
|
|
if (prev_cap && prev_cap->num == frame_num)
|
|
return &prev_cap->abs_ts;
|
|
|
|
if (cf->frames) {
|
|
frame_data *fd = frame_data_sequence_find(cf->frames, frame_num);
|
|
|
|
return (fd) ? &fd->abs_ts : NULL;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static epan_t *
|
|
tshark_epan_new(capture_file *cf)
|
|
{
|
|
epan_t *epan = epan_new();
|
|
|
|
epan->data = cf;
|
|
epan->get_frame_ts = tshark_get_frame_ts;
|
|
epan->get_interface_name = cap_file_get_interface_name;
|
|
epan->get_user_comment = NULL;
|
|
|
|
return epan;
|
|
}
|
|
|
|
#ifdef HAVE_LIBPCAP
|
|
static gboolean
|
|
capture(void)
|
|
{
|
|
gboolean ret;
|
|
guint i;
|
|
GString *str;
|
|
#ifdef USE_TSHARK_SELECT
|
|
fd_set readfds;
|
|
#endif
|
|
#ifndef _WIN32
|
|
struct sigaction action, oldaction;
|
|
#endif
|
|
|
|
/* Create new dissection section. */
|
|
epan_free(cfile.epan);
|
|
cfile.epan = tshark_epan_new(&cfile);
|
|
|
|
#ifdef _WIN32
|
|
/* Catch a CTRL+C event and, if we get it, clean up and exit. */
|
|
SetConsoleCtrlHandler(capture_cleanup, TRUE);
|
|
#else /* _WIN32 */
|
|
/* Catch SIGINT and SIGTERM and, if we get either of them,
|
|
clean up and exit. If SIGHUP isn't being ignored, catch
|
|
it too and, if we get it, clean up and exit.
|
|
|
|
We restart any read that was in progress, so that it doesn't
|
|
disrupt reading from the sync pipe. The signal handler tells
|
|
the capture child to finish; it will report that it finished,
|
|
or will exit abnormally, so we'll stop reading from the sync
|
|
pipe, pick up the exit status, and quit. */
|
|
memset(&action, 0, sizeof(action));
|
|
action.sa_handler = capture_cleanup;
|
|
action.sa_flags = SA_RESTART;
|
|
sigemptyset(&action.sa_mask);
|
|
sigaction(SIGTERM, &action, NULL);
|
|
sigaction(SIGINT, &action, NULL);
|
|
sigaction(SIGHUP, NULL, &oldaction);
|
|
if (oldaction.sa_handler == SIG_DFL)
|
|
sigaction(SIGHUP, &action, NULL);
|
|
|
|
#ifdef SIGINFO
|
|
/* Catch SIGINFO and, if we get it and we're capturing to a file in
|
|
quiet mode, report the number of packets we've captured.
|
|
|
|
Again, restart any read that was in progress, so that it doesn't
|
|
disrupt reading from the sync pipe. */
|
|
action.sa_handler = report_counts_siginfo;
|
|
action.sa_flags = SA_RESTART;
|
|
sigemptyset(&action.sa_mask);
|
|
sigaction(SIGINFO, &action, NULL);
|
|
#endif /* SIGINFO */
|
|
#endif /* _WIN32 */
|
|
|
|
global_capture_session.state = CAPTURE_PREPARING;
|
|
|
|
/* Let the user know which interfaces were chosen. */
|
|
for (i = 0; i < global_capture_opts.ifaces->len; i++) {
|
|
interface_options interface_opts;
|
|
|
|
interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
|
|
interface_opts.descr = get_interface_descriptive_name(interface_opts.name);
|
|
global_capture_opts.ifaces = g_array_remove_index(global_capture_opts.ifaces, i);
|
|
g_array_insert_val(global_capture_opts.ifaces, i, interface_opts);
|
|
}
|
|
str = get_iface_list_string(&global_capture_opts, IFLIST_QUOTE_IF_DESCRIPTION);
|
|
if (really_quiet == FALSE)
|
|
fprintf(stderr, "Capturing on %s\n", str->str);
|
|
fflush(stderr);
|
|
g_string_free(str, TRUE);
|
|
|
|
ret = sync_pipe_start(&global_capture_opts, &global_capture_session, &global_info_data, NULL);
|
|
|
|
if (!ret)
|
|
return FALSE;
|
|
|
|
/* the actual capture loop
|
|
*
|
|
* XXX - glib doesn't seem to provide any event based loop handling.
|
|
*
|
|
* XXX - for whatever reason,
|
|
* calling g_main_loop_new() ends up in 100% cpu load.
|
|
*
|
|
* But that doesn't matter: in UNIX we can use select() to find an input
|
|
* source with something to do.
|
|
*
|
|
* But that doesn't matter because we're in a CLI (that doesn't need to
|
|
* update a GUI or something at the same time) so it's OK if we block
|
|
* trying to read from the pipe.
|
|
*
|
|
* So all the stuff in USE_TSHARK_SELECT could be removed unless I'm
|
|
* wrong (but I leave it there in case I am...).
|
|
*/
|
|
|
|
#ifdef USE_TSHARK_SELECT
|
|
FD_ZERO(&readfds);
|
|
FD_SET(pipe_input.source, &readfds);
|
|
#endif
|
|
|
|
loop_running = TRUE;
|
|
|
|
TRY
|
|
{
|
|
while (loop_running)
|
|
{
|
|
#ifdef USE_TSHARK_SELECT
|
|
ret = select(pipe_input.source+1, &readfds, NULL, NULL, NULL);
|
|
|
|
if (ret == -1)
|
|
{
|
|
fprintf(stderr, "%s: %s\n", "select()", g_strerror(errno));
|
|
return TRUE;
|
|
} else if (ret == 1) {
|
|
#endif
|
|
/* Call the real handler */
|
|
if (!pipe_input.input_cb(pipe_input.source, pipe_input.user_data)) {
|
|
g_log(NULL, G_LOG_LEVEL_DEBUG, "input pipe closed");
|
|
return FALSE;
|
|
}
|
|
#ifdef USE_TSHARK_SELECT
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
CATCH(OutOfMemoryError) {
|
|
fprintf(stderr,
|
|
"Out Of Memory.\n"
|
|
"\n"
|
|
"Sorry, but TShark has to terminate now.\n"
|
|
"\n"
|
|
"More information and workarounds can be found at\n"
|
|
"https://wiki.wireshark.org/KnownBugs/OutOfMemory\n");
|
|
exit(1);
|
|
}
|
|
ENDTRY;
|
|
return TRUE;
|
|
}
|
|
|
|
/* capture child detected an error */
|
|
void
|
|
capture_input_error_message(capture_session *cap_session _U_, char *error_msg, char *secondary_error_msg)
|
|
{
|
|
cmdarg_err("%s", error_msg);
|
|
cmdarg_err_cont("%s", secondary_error_msg);
|
|
}
|
|
|
|
|
|
/* capture child detected an capture filter related error */
|
|
void
|
|
capture_input_cfilter_error_message(capture_session *cap_session, guint i, char *error_message)
|
|
{
|
|
capture_options *capture_opts = cap_session->capture_opts;
|
|
dfilter_t *rfcode = NULL;
|
|
interface_options interface_opts;
|
|
|
|
g_assert(i < capture_opts->ifaces->len);
|
|
interface_opts = g_array_index(capture_opts->ifaces, interface_options, i);
|
|
|
|
if (dfilter_compile(interface_opts.cfilter, &rfcode, NULL) && rfcode != NULL) {
|
|
cmdarg_err(
|
|
"Invalid capture filter \"%s\" for interface '%s'.\n"
|
|
"\n"
|
|
"That string looks like a valid display filter; however, it isn't a valid\n"
|
|
"capture filter (%s).\n"
|
|
"\n"
|
|
"Note that display filters and capture filters don't have the same syntax,\n"
|
|
"so you can't use most display filter expressions as capture filters.\n"
|
|
"\n"
|
|
"See the User's Guide for a description of the capture filter syntax.",
|
|
interface_opts.cfilter, interface_opts.descr, error_message);
|
|
dfilter_free(rfcode);
|
|
} else {
|
|
cmdarg_err(
|
|
"Invalid capture filter \"%s\" for interface '%s'.\n"
|
|
"\n"
|
|
"That string isn't a valid capture filter (%s).\n"
|
|
"See the User's Guide for a description of the capture filter syntax.",
|
|
interface_opts.cfilter, interface_opts.descr, error_message);
|
|
}
|
|
}
|
|
|
|
|
|
/* capture child tells us we have a new (or the first) capture file */
|
|
gboolean
|
|
capture_input_new_file(capture_session *cap_session, gchar *new_file)
|
|
{
|
|
capture_options *capture_opts = cap_session->capture_opts;
|
|
capture_file *cf = (capture_file *) cap_session->cf;
|
|
gboolean is_tempfile;
|
|
int err;
|
|
|
|
if (cap_session->state == CAPTURE_PREPARING) {
|
|
g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture started.");
|
|
}
|
|
g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "File: \"%s\"", new_file);
|
|
|
|
g_assert(cap_session->state == CAPTURE_PREPARING || cap_session->state == CAPTURE_RUNNING);
|
|
|
|
/* free the old filename */
|
|
if (capture_opts->save_file != NULL) {
|
|
|
|
/* we start a new capture file, close the old one (if we had one before) */
|
|
if (cf->state != FILE_CLOSED) {
|
|
if (cf->wth != NULL) {
|
|
wtap_close(cf->wth);
|
|
cf->wth = NULL;
|
|
}
|
|
cf->state = FILE_CLOSED;
|
|
}
|
|
|
|
g_free(capture_opts->save_file);
|
|
is_tempfile = FALSE;
|
|
|
|
epan_free(cf->epan);
|
|
cf->epan = tshark_epan_new(cf);
|
|
} else {
|
|
/* we didn't had a save_file before, must be a tempfile */
|
|
is_tempfile = TRUE;
|
|
}
|
|
|
|
/* save the new filename */
|
|
capture_opts->save_file = g_strdup(new_file);
|
|
|
|
/* if we are in real-time mode, open the new file now */
|
|
if (do_dissection) {
|
|
/* this is probably unecessary, but better safe than sorry */
|
|
((capture_file *)cap_session->cf)->open_type = WTAP_TYPE_AUTO;
|
|
/* Attempt to open the capture file and set up to read from it. */
|
|
switch(cf_open((capture_file *)cap_session->cf, capture_opts->save_file, WTAP_TYPE_AUTO, is_tempfile, &err)) {
|
|
case CF_OK:
|
|
break;
|
|
case CF_ERROR:
|
|
/* Don't unlink (delete) the save file - leave it around,
|
|
for debugging purposes. */
|
|
g_free(capture_opts->save_file);
|
|
capture_opts->save_file = NULL;
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
cap_session->state = CAPTURE_RUNNING;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/* capture child tells us we have new packets to read */
|
|
void
|
|
capture_input_new_packets(capture_session *cap_session, int to_read)
|
|
{
|
|
gboolean ret;
|
|
int err;
|
|
gchar *err_info;
|
|
gint64 data_offset;
|
|
capture_file *cf = (capture_file *)cap_session->cf;
|
|
gboolean filtering_tap_listeners;
|
|
guint tap_flags;
|
|
|
|
#ifdef SIGINFO
|
|
/*
|
|
* Prevent a SIGINFO handler from writing to the standard error while
|
|
* we're doing so or writing to the standard output; instead, have it
|
|
* just set a flag telling us to print that information when we're done.
|
|
*/
|
|
infodelay = TRUE;
|
|
#endif /* SIGINFO */
|
|
|
|
/* 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();
|
|
|
|
if (do_dissection) {
|
|
gboolean create_proto_tree;
|
|
epan_dissect_t *edt;
|
|
|
|
if (cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
|
|
(tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
|
|
create_proto_tree = TRUE;
|
|
else
|
|
create_proto_tree = FALSE;
|
|
|
|
/* 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 (to_read-- && cf->wth) {
|
|
wtap_cleareof(cf->wth);
|
|
ret = wtap_read(cf->wth, &err, &err_info, &data_offset);
|
|
if (ret == FALSE) {
|
|
/* read from file failed, tell the capture child to stop */
|
|
sync_pipe_stop(cap_session);
|
|
wtap_close(cf->wth);
|
|
cf->wth = NULL;
|
|
} else {
|
|
ret = process_packet(cf, edt, data_offset, wtap_phdr(cf->wth),
|
|
wtap_buf_ptr(cf->wth),
|
|
tap_flags);
|
|
}
|
|
if (ret != FALSE) {
|
|
/* packet successfully read and gone through the "Read Filter" */
|
|
packet_count++;
|
|
}
|
|
}
|
|
|
|
epan_dissect_free(edt);
|
|
|
|
} else {
|
|
/*
|
|
* Dumpcap's doing all the work; we're not doing any dissection.
|
|
* Count all the packets it wrote.
|
|
*/
|
|
packet_count += to_read;
|
|
}
|
|
|
|
if (print_packet_counts) {
|
|
/* We're printing packet counts. */
|
|
if (packet_count != 0) {
|
|
fprintf(stderr, "\r%u ", packet_count);
|
|
/* stderr could be line buffered */
|
|
fflush(stderr);
|
|
}
|
|
}
|
|
|
|
#ifdef SIGINFO
|
|
/*
|
|
* Allow SIGINFO handlers to write.
|
|
*/
|
|
infodelay = FALSE;
|
|
|
|
/*
|
|
* If a SIGINFO handler asked us to write out capture counts, do so.
|
|
*/
|
|
if (infoprint)
|
|
report_counts();
|
|
#endif /* SIGINFO */
|
|
}
|
|
|
|
static void
|
|
report_counts(void)
|
|
{
|
|
if ((print_packet_counts == FALSE) && (really_quiet == FALSE)) {
|
|
/* Report the count only if we aren't printing a packet count
|
|
as packets arrive. */
|
|
fprintf(stderr, "%u packet%s captured\n", packet_count,
|
|
plurality(packet_count, "", "s"));
|
|
}
|
|
#ifdef SIGINFO
|
|
infoprint = FALSE; /* we just reported it */
|
|
#endif /* SIGINFO */
|
|
}
|
|
|
|
#ifdef SIGINFO
|
|
static void
|
|
report_counts_siginfo(int signum _U_)
|
|
{
|
|
int sav_errno = errno;
|
|
/* If we've been told to delay printing, just set a flag asking
|
|
that we print counts (if we're supposed to), otherwise print
|
|
the count of packets captured (if we're supposed to). */
|
|
if (infodelay)
|
|
infoprint = TRUE;
|
|
else
|
|
report_counts();
|
|
errno = sav_errno;
|
|
}
|
|
#endif /* SIGINFO */
|
|
|
|
|
|
/* capture child detected any packet drops? */
|
|
void
|
|
capture_input_drops(capture_session *cap_session _U_, guint32 dropped)
|
|
{
|
|
if (print_packet_counts) {
|
|
/* We're printing packet counts to stderr.
|
|
Send a newline so that we move to the line after the packet count. */
|
|
fprintf(stderr, "\n");
|
|
}
|
|
|
|
if (dropped != 0) {
|
|
/* We're printing packet counts to stderr.
|
|
Send a newline so that we move to the line after the packet count. */
|
|
fprintf(stderr, "%u packet%s dropped\n", dropped, plurality(dropped, "", "s"));
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Capture child closed its side of the pipe, report any error and
|
|
* do the required cleanup.
|
|
*/
|
|
void
|
|
capture_input_closed(capture_session *cap_session, gchar *msg)
|
|
{
|
|
capture_file *cf = (capture_file *) cap_session->cf;
|
|
|
|
if (msg != NULL)
|
|
fprintf(stderr, "tshark: %s\n", msg);
|
|
|
|
report_counts();
|
|
|
|
if (cf != NULL && cf->wth != NULL) {
|
|
wtap_close(cf->wth);
|
|
if (cf->is_tempfile) {
|
|
ws_unlink(cf->filename);
|
|
}
|
|
}
|
|
#ifdef USE_BROKEN_G_MAIN_LOOP
|
|
/*g_main_loop_quit(loop);*/
|
|
g_main_loop_quit(loop);
|
|
#else
|
|
loop_running = FALSE;
|
|
#endif
|
|
}
|
|
|
|
|
|
|
|
|
|
#ifdef _WIN32
|
|
static BOOL WINAPI
|
|
capture_cleanup(DWORD ctrltype _U_)
|
|
{
|
|
/* CTRL_C_EVENT is sort of like SIGINT, CTRL_BREAK_EVENT is unique to
|
|
Windows, CTRL_CLOSE_EVENT is sort of like SIGHUP, CTRL_LOGOFF_EVENT
|
|
is also sort of like SIGHUP, and CTRL_SHUTDOWN_EVENT is sort of
|
|
like SIGTERM at least when the machine's shutting down.
|
|
|
|
For now, we handle them all as indications that we should clean up
|
|
and quit, just as we handle SIGINT, SIGHUP, and SIGTERM in that
|
|
way on UNIX.
|
|
|
|
We must return TRUE so that no other handler - such as one that would
|
|
terminate the process - gets called.
|
|
|
|
XXX - for some reason, typing ^C to TShark, if you run this in
|
|
a Cygwin console window in at least some versions of Cygwin,
|
|
causes TShark to terminate immediately; this routine gets
|
|
called, but the main loop doesn't get a chance to run and
|
|
exit cleanly, at least if this is compiled with Microsoft Visual
|
|
C++ (i.e., it's a property of the Cygwin console window or Bash;
|
|
it happens if TShark is not built with Cygwin - for all I know,
|
|
building it with Cygwin may make the problem go away). */
|
|
|
|
/* tell the capture child to stop */
|
|
sync_pipe_stop(&global_capture_session);
|
|
|
|
/* don't stop our own loop already here, otherwise status messages and
|
|
* cleanup wouldn't be done properly. The child will indicate the stop of
|
|
* everything by calling capture_input_closed() later */
|
|
|
|
return TRUE;
|
|
}
|
|
#else
|
|
static void
|
|
capture_cleanup(int signum _U_)
|
|
{
|
|
/* tell the capture child to stop */
|
|
sync_pipe_stop(&global_capture_session);
|
|
|
|
/* don't stop our own loop already here, otherwise status messages and
|
|
* cleanup wouldn't be done properly. The child will indicate the stop of
|
|
* everything by calling capture_input_closed() later */
|
|
}
|
|
#endif /* _WIN32 */
|
|
#endif /* HAVE_LIBPCAP */
|
|
|
|
static gboolean
|
|
process_packet_first_pass(capture_file *cf, epan_dissect_t *edt,
|
|
gint64 offset, struct wtap_pkthdr *whdr,
|
|
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, whdr, 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 (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
|
|
gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns)
|
|
/* Grab any resolved addresses */
|
|
host_name_lookup_process();
|
|
|
|
/* If we're running a read filter, prime the epan_dissect_t with that
|
|
filter. */
|
|
if (cf->rfcode)
|
|
epan_dissect_prime_dfilter(edt, cf->rfcode);
|
|
|
|
if (cf->dfcode)
|
|
epan_dissect_prime_dfilter(edt, cf->dfcode);
|
|
|
|
frame_data_set_before_dissect(&fdlocal, &cf->elapsed_time,
|
|
&ref, prev_dis);
|
|
if (ref == &fdlocal) {
|
|
ref_frame = fdlocal;
|
|
ref = &ref_frame;
|
|
}
|
|
|
|
epan_dissect_run(edt, cf->cd_t, whdr, frame_tvbuff_new(&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);
|
|
prev_cap = prev_dis = frame_data_sequence_add(cf->frames, &fdlocal);
|
|
|
|
/* If we're not doing dissection then there won't be any dependent frames.
|
|
* More importantly, edt.pi.dependent_frames won't be initialized because
|
|
* epan hasn't been initialized.
|
|
* if we *are* doing dissection, then mark the dependent frames, but only
|
|
* if a display filter was given and it matches this packet.
|
|
*/
|
|
if (edt && cf->dfcode) {
|
|
if (dfilter_apply_edt(cf->dfcode, edt)) {
|
|
g_slist_foreach(edt->pi.dependent_frames, find_and_mark_frame_depended_upon, cf->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,
|
|
struct wtap_pkthdr *phdr, Buffer *buf,
|
|
guint tap_flags)
|
|
{
|
|
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 (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
|
|
gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns)
|
|
/* Grab any resolved addresses */
|
|
host_name_lookup_process();
|
|
|
|
/* If we're running a display filter, prime the epan_dissect_t with that
|
|
filter. */
|
|
if (cf->dfcode)
|
|
epan_dissect_prime_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.
|
|
*/
|
|
if ((tap_flags & TL_REQUIRES_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,
|
|
&ref, prev_dis);
|
|
if (ref == fdata) {
|
|
ref_frame = *fdata;
|
|
ref = &ref_frame;
|
|
}
|
|
|
|
epan_dissect_run_with_taps(edt, cf->cd_t, phdr, frame_tvbuff_new_buffer(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);
|
|
|
|
/* 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 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. */
|
|
if (line_buffered)
|
|
fflush(stdout);
|
|
|
|
if (ferror(stdout)) {
|
|
show_print_file_io_error(errno);
|
|
exit(2);
|
|
}
|
|
}
|
|
prev_dis = fdata;
|
|
}
|
|
prev_cap = fdata;
|
|
|
|
if (edt) {
|
|
epan_dissect_reset(edt);
|
|
}
|
|
return passed || fdata->flags.dependent_of_displayed;
|
|
}
|
|
|
|
static int
|
|
load_cap_file(capture_file *cf, char *save_file, int out_file_type,
|
|
gboolean out_file_name_res, int max_packet_count, gint64 max_byte_count)
|
|
{
|
|
gint linktype;
|
|
int snapshot_length;
|
|
wtap_dumper *pdh;
|
|
guint32 framenum;
|
|
int err;
|
|
gchar *err_info = NULL;
|
|
gint64 data_offset;
|
|
char *save_file_string = NULL;
|
|
gboolean filtering_tap_listeners;
|
|
guint tap_flags;
|
|
wtapng_section_t *shb_hdr = NULL;
|
|
wtapng_iface_descriptions_t *idb_inf = NULL;
|
|
wtapng_name_res_t *nrb_hdr = NULL;
|
|
struct wtap_pkthdr phdr;
|
|
Buffer buf;
|
|
epan_dissect_t *edt = NULL;
|
|
|
|
wtap_phdr_init(&phdr);
|
|
|
|
idb_inf = wtap_file_get_idb_info(cf->wth);
|
|
#ifdef PCAP_NG_DEFAULT
|
|
if (idb_inf->interface_data->len > 1) {
|
|
linktype = WTAP_ENCAP_PER_PACKET;
|
|
} else {
|
|
linktype = wtap_file_encap(cf->wth);
|
|
}
|
|
#else
|
|
linktype = wtap_file_encap(cf->wth);
|
|
#endif
|
|
if (save_file != NULL) {
|
|
/* Get a string that describes what we're writing to */
|
|
save_file_string = output_file_description(save_file);
|
|
|
|
/* Set up to write to the capture file. */
|
|
snapshot_length = wtap_snapshot_length(cf->wth);
|
|
if (snapshot_length == 0) {
|
|
/* Snapshot length of input file not known. */
|
|
snapshot_length = WTAP_MAX_PACKET_SIZE;
|
|
}
|
|
tshark_debug("tshark: snapshot_length = %d", snapshot_length);
|
|
|
|
shb_hdr = wtap_file_get_shb_for_new_file(cf->wth);
|
|
nrb_hdr = wtap_file_get_nrb_for_new_file(cf->wth);
|
|
|
|
/* If we don't have an application name add Tshark */
|
|
if (shb_hdr->shb_user_appl == NULL) {
|
|
/* this is free'd by wtap_free_shb() later */
|
|
shb_hdr->shb_user_appl = g_strdup_printf("TShark (Wireshark) %s", get_ws_vcs_version_info());
|
|
}
|
|
|
|
if (linktype != WTAP_ENCAP_PER_PACKET &&
|
|
out_file_type == WTAP_FILE_TYPE_SUBTYPE_PCAP) {
|
|
tshark_debug("tshark: writing PCAP format to %s", save_file);
|
|
if (strcmp(save_file, "-") == 0) {
|
|
/* Write to the standard output. */
|
|
pdh = wtap_dump_open_stdout(out_file_type, linktype,
|
|
snapshot_length, FALSE /* compressed */, &err);
|
|
} else {
|
|
pdh = wtap_dump_open(save_file, out_file_type, linktype,
|
|
snapshot_length, FALSE /* compressed */, &err);
|
|
}
|
|
}
|
|
else {
|
|
tshark_debug("tshark: writing format type %d, to %s", out_file_type, save_file);
|
|
if (strcmp(save_file, "-") == 0) {
|
|
/* Write to the standard output. */
|
|
pdh = wtap_dump_open_stdout_ng(out_file_type, linktype,
|
|
snapshot_length, FALSE /* compressed */, shb_hdr, idb_inf, nrb_hdr, &err);
|
|
} else {
|
|
pdh = wtap_dump_open_ng(save_file, out_file_type, linktype,
|
|
snapshot_length, FALSE /* compressed */, shb_hdr, idb_inf, nrb_hdr, &err);
|
|
}
|
|
}
|
|
|
|
g_free(idb_inf);
|
|
idb_inf = NULL;
|
|
|
|
if (pdh == NULL) {
|
|
/* We couldn't set up to write to the capture file. */
|
|
switch (err) {
|
|
|
|
case WTAP_ERR_UNWRITABLE_FILE_TYPE:
|
|
cmdarg_err("Capture files can't be written in that format.");
|
|
break;
|
|
|
|
case WTAP_ERR_UNWRITABLE_ENCAP:
|
|
case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
|
|
cmdarg_err("The capture file being read can't be written as a "
|
|
"\"%s\" file.", wtap_file_type_subtype_short_string(out_file_type));
|
|
break;
|
|
|
|
case WTAP_ERR_CANT_OPEN:
|
|
cmdarg_err("The %s couldn't be created for some "
|
|
"unknown reason.", save_file_string);
|
|
break;
|
|
|
|
case WTAP_ERR_SHORT_WRITE:
|
|
cmdarg_err("A full header couldn't be written to the %s.",
|
|
save_file_string);
|
|
break;
|
|
|
|
default:
|
|
cmdarg_err("The %s could not be created: %s.", save_file_string,
|
|
wtap_strerror(err));
|
|
break;
|
|
}
|
|
goto out;
|
|
}
|
|
} else {
|
|
if (print_packet_info) {
|
|
if (!write_preamble(cf)) {
|
|
err = errno;
|
|
show_print_file_io_error(err);
|
|
goto out;
|
|
}
|
|
}
|
|
g_free(idb_inf);
|
|
idb_inf = NULL;
|
|
pdh = NULL;
|
|
}
|
|
|
|
/* 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();
|
|
|
|
if (perform_two_pass_analysis) {
|
|
frame_data *fdata;
|
|
|
|
tshark_debug("tshark: perform_two_pass_analysis, do_dissection=%s", do_dissection ? "TRUE" : "FALSE");
|
|
|
|
/* Allocate a frame_data_sequence for all the frames. */
|
|
cf->frames = new_frame_data_sequence();
|
|
|
|
if (do_dissection) {
|
|
gboolean create_proto_tree = FALSE;
|
|
|
|
/* If we're going to be applying a filter, we'll need to
|
|
create a protocol tree against which to apply the filter. */
|
|
if (cf->rfcode || cf->dfcode)
|
|
create_proto_tree = TRUE;
|
|
|
|
tshark_debug("tshark: create_proto_tree = %s", create_proto_tree ? "TRUE" : "FALSE");
|
|
|
|
/* 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);
|
|
}
|
|
|
|
tshark_debug("tshark: reading records for first pass");
|
|
while (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
|
|
if (process_packet_first_pass(cf, edt, data_offset, wtap_phdr(cf->wth),
|
|
wtap_buf_ptr(cf->wth))) {
|
|
/* 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)) {
|
|
tshark_debug("tshark: max_packet_count (%d) or max_byte_count (%" G_GINT64_MODIFIER "d/%" G_GINT64_MODIFIER "d) reached",
|
|
max_packet_count, data_offset, max_byte_count);
|
|
err = 0; /* This is not an error */
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (edt) {
|
|
epan_dissect_free(edt);
|
|
edt = NULL;
|
|
}
|
|
|
|
/* Close the sequential I/O side, to free up memory it requires. */
|
|
wtap_sequential_close(cf->wth);
|
|
|
|
/* 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();
|
|
|
|
prev_dis = NULL;
|
|
prev_cap = NULL;
|
|
ws_buffer_init(&buf, 1500);
|
|
|
|
tshark_debug("tshark: done with first pass");
|
|
|
|
if (do_dissection) {
|
|
gboolean create_proto_tree;
|
|
|
|
if (cf->dfcode || print_details || filtering_tap_listeners ||
|
|
(tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
|
|
create_proto_tree = TRUE;
|
|
else
|
|
create_proto_tree = FALSE;
|
|
|
|
tshark_debug("tshark: create_proto_tree = %s", create_proto_tree ? "TRUE" : "FALSE");
|
|
|
|
/* 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->frames, framenum);
|
|
if (wtap_seek_read(cf->wth, fdata->file_off, &phdr, &buf, &err,
|
|
&err_info)) {
|
|
tshark_debug("tshark: invoking process_packet_second_pass() for frame #%d", framenum);
|
|
if (process_packet_second_pass(cf, edt, fdata, &phdr, &buf,
|
|
tap_flags)) {
|
|
/* Either there's no read filtering or this packet passed the
|
|
filter, so, if we're writing to a capture file, write
|
|
this packet out. */
|
|
if (pdh != NULL) {
|
|
tshark_debug("tshark: writing packet #%d to outfile", framenum);
|
|
if (!wtap_dump(pdh, &phdr, ws_buffer_start_ptr(&buf), &err, &err_info)) {
|
|
/* Error writing to a capture file */
|
|
tshark_debug("tshark: error writing to a capture file (%d)", err);
|
|
switch (err) {
|
|
|
|
case WTAP_ERR_UNWRITABLE_ENCAP:
|
|
/*
|
|
* This is a problem with the particular frame we're writing
|
|
* and the file type and subtype we're writing; note that,
|
|
* and report the frame number and file type/subtype.
|
|
*
|
|
* XXX - framenum is not necessarily the frame number in
|
|
* the input file if there was a read filter.
|
|
*/
|
|
fprintf(stderr,
|
|
"Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.\n",
|
|
framenum, cf->filename,
|
|
wtap_file_type_subtype_short_string(out_file_type));
|
|
break;
|
|
|
|
case WTAP_ERR_PACKET_TOO_LARGE:
|
|
/*
|
|
* This is a problem with the particular frame we're writing
|
|
* and the file type and subtype we're writing; note that,
|
|
* and report the frame number and file type/subtype.
|
|
*
|
|
* XXX - framenum is not necessarily the frame number in
|
|
* the input file if there was a read filter.
|
|
*/
|
|
fprintf(stderr,
|
|
"Frame %u of \"%s\" is too large for a \"%s\" file.\n",
|
|
framenum, cf->filename,
|
|
wtap_file_type_subtype_short_string(out_file_type));
|
|
break;
|
|
|
|
case WTAP_ERR_UNWRITABLE_REC_TYPE:
|
|
/*
|
|
* This is a problem with the particular record we're writing
|
|
* and the file type and subtype we're writing; note that,
|
|
* and report the record number and file type/subtype.
|
|
*
|
|
* XXX - framenum is not necessarily the record number in
|
|
* the input file if there was a read filter.
|
|
*/
|
|
fprintf(stderr,
|
|
"Record %u of \"%s\" has a record type that can't be saved in a \"%s\" file.\n",
|
|
framenum, cf->filename,
|
|
wtap_file_type_subtype_short_string(out_file_type));
|
|
break;
|
|
|
|
case WTAP_ERR_UNWRITABLE_REC_DATA:
|
|
/*
|
|
* This is a problem with the particular record we're writing
|
|
* and the file type and subtype we're writing; note that,
|
|
* and report the record number and file type/subtype.
|
|
*
|
|
* XXX - framenum is not necessarily the record number in
|
|
* the input file if there was a read filter.
|
|
*/
|
|
fprintf(stderr,
|
|
"Record %u of \"%s\" has data that can't be saved in a \"%s\" file.\n(%s)\n",
|
|
framenum, cf->filename,
|
|
wtap_file_type_subtype_short_string(out_file_type),
|
|
err_info != NULL ? err_info : "no information supplied");
|
|
g_free(err_info);
|
|
break;
|
|
|
|
default:
|
|
show_capture_file_io_error(save_file, err, FALSE);
|
|
break;
|
|
}
|
|
wtap_dump_close(pdh, &err);
|
|
wtap_free_shb(shb_hdr);
|
|
wtap_free_nrb(nrb_hdr);
|
|
exit(2);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (edt) {
|
|
epan_dissect_free(edt);
|
|
edt = NULL;
|
|
}
|
|
|
|
ws_buffer_free(&buf);
|
|
|
|
tshark_debug("tshark: done with second pass");
|
|
}
|
|
else {
|
|
/* !perform_two_pass_analysis */
|
|
framenum = 0;
|
|
|
|
tshark_debug("tshark: perform one pass analysis, do_dissection=%s", do_dissection ? "TRUE" : "FALSE");
|
|
|
|
if (do_dissection) {
|
|
gboolean create_proto_tree;
|
|
|
|
if (cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
|
|
(tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo))
|
|
create_proto_tree = TRUE;
|
|
else
|
|
create_proto_tree = FALSE;
|
|
|
|
tshark_debug("tshark: create_proto_tree = %s", create_proto_tree ? "TRUE" : "FALSE");
|
|
|
|
/* 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 (wtap_read(cf->wth, &err, &err_info, &data_offset)) {
|
|
framenum++;
|
|
|
|
tshark_debug("tshark: processing packet #%d", framenum);
|
|
|
|
if (process_packet(cf, edt, data_offset, wtap_phdr(cf->wth),
|
|
wtap_buf_ptr(cf->wth),
|
|
tap_flags)) {
|
|
/* Either there's no read filtering or this packet passed the
|
|
filter, so, if we're writing to a capture file, write
|
|
this packet out. */
|
|
if (pdh != NULL) {
|
|
tshark_debug("tshark: writing packet #%d to outfile", framenum);
|
|
if (!wtap_dump(pdh, wtap_phdr(cf->wth), wtap_buf_ptr(cf->wth), &err, &err_info)) {
|
|
/* Error writing to a capture file */
|
|
tshark_debug("tshark: error writing to a capture file (%d)", err);
|
|
switch (err) {
|
|
|
|
case WTAP_ERR_UNWRITABLE_ENCAP:
|
|
/*
|
|
* This is a problem with the particular frame we're writing
|
|
* and the file type and subtype we're writing; note that,
|
|
* and report the frame number and file type/subtype.
|
|
*/
|
|
fprintf(stderr,
|
|
"Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.\n",
|
|
framenum, cf->filename,
|
|
wtap_file_type_subtype_short_string(out_file_type));
|
|
break;
|
|
|
|
case WTAP_ERR_PACKET_TOO_LARGE:
|
|
/*
|
|
* This is a problem with the particular frame we're writing
|
|
* and the file type and subtype we're writing; note that,
|
|
* and report the frame number and file type/subtype.
|
|
*/
|
|
fprintf(stderr,
|
|
"Frame %u of \"%s\" is too large for a \"%s\" file.\n",
|
|
framenum, cf->filename,
|
|
wtap_file_type_subtype_short_string(out_file_type));
|
|
break;
|
|
|
|
case WTAP_ERR_UNWRITABLE_REC_TYPE:
|
|
/*
|
|
* This is a problem with the particular record we're writing
|
|
* and the file type and subtype we're writing; note that,
|
|
* and report the record number and file type/subtype.
|
|
*/
|
|
fprintf(stderr,
|
|
"Record %u of \"%s\" has a record type that can't be saved in a \"%s\" file.\n",
|
|
framenum, cf->filename,
|
|
wtap_file_type_subtype_short_string(out_file_type));
|
|
break;
|
|
|
|
case WTAP_ERR_UNWRITABLE_REC_DATA:
|
|
/*
|
|
* This is a problem with the particular record we're writing
|
|
* and the file type and subtype we're writing; note that,
|
|
* and report the record number and file type/subtype.
|
|
*/
|
|
fprintf(stderr,
|
|
"Record %u of \"%s\" has data that can't be saved in a \"%s\" file.\n(%s)\n",
|
|
framenum, cf->filename,
|
|
wtap_file_type_subtype_short_string(out_file_type),
|
|
err_info != NULL ? err_info : "no information supplied");
|
|
g_free(err_info);
|
|
break;
|
|
|
|
default:
|
|
show_capture_file_io_error(save_file, err, FALSE);
|
|
break;
|
|
}
|
|
wtap_dump_close(pdh, &err);
|
|
wtap_free_shb(shb_hdr);
|
|
wtap_free_nrb(nrb_hdr);
|
|
exit(2);
|
|
}
|
|
}
|
|
}
|
|
/* 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)) {
|
|
tshark_debug("tshark: max_packet_count (%d) or max_byte_count (%" G_GINT64_MODIFIER "d/%" G_GINT64_MODIFIER "d) reached",
|
|
max_packet_count, data_offset, max_byte_count);
|
|
err = 0; /* This is not an error */
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (edt) {
|
|
epan_dissect_free(edt);
|
|
edt = NULL;
|
|
}
|
|
}
|
|
|
|
wtap_phdr_cleanup(&phdr);
|
|
|
|
if (err != 0) {
|
|
tshark_debug("tshark: something failed along the line (%d)", err);
|
|
/*
|
|
* 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
|
|
switch (err) {
|
|
|
|
case WTAP_ERR_UNSUPPORTED:
|
|
cmdarg_err("The file \"%s\" contains record data that TShark doesn't support.\n(%s)",
|
|
cf->filename,
|
|
err_info != NULL ? err_info : "no information supplied");
|
|
g_free(err_info);
|
|
break;
|
|
|
|
case WTAP_ERR_SHORT_READ:
|
|
cmdarg_err("The file \"%s\" appears to have been cut short in the middle of a packet.",
|
|
cf->filename);
|
|
break;
|
|
|
|
case WTAP_ERR_BAD_FILE:
|
|
cmdarg_err("The file \"%s\" appears to be damaged or corrupt.\n(%s)",
|
|
cf->filename,
|
|
err_info != NULL ? err_info : "no information supplied");
|
|
g_free(err_info);
|
|
break;
|
|
|
|
case WTAP_ERR_DECOMPRESS:
|
|
cmdarg_err("The compressed file \"%s\" appears to be damaged or corrupt.\n"
|
|
"(%s)", cf->filename,
|
|
err_info != NULL ? err_info : "no information supplied");
|
|
g_free(err_info);
|
|
break;
|
|
|
|
default:
|
|
cmdarg_err("An error occurred while reading the file \"%s\": %s.",
|
|
cf->filename, wtap_strerror(err));
|
|
break;
|
|
}
|
|
if (save_file != NULL) {
|
|
/* Now close the capture file. */
|
|
if (!wtap_dump_close(pdh, &err))
|
|
show_capture_file_io_error(save_file, err, TRUE);
|
|
}
|
|
} else {
|
|
if (save_file != NULL) {
|
|
if (pdh && out_file_name_res) {
|
|
if (!wtap_dump_set_addrinfo_list(pdh, get_addrinfo_list())) {
|
|
cmdarg_err("The file format \"%s\" doesn't support name resolution information.",
|
|
wtap_file_type_subtype_short_string(out_file_type));
|
|
}
|
|
}
|
|
/* Now close the capture file. */
|
|
if (!wtap_dump_close(pdh, &err))
|
|
show_capture_file_io_error(save_file, err, TRUE);
|
|
} else {
|
|
if (print_packet_info) {
|
|
if (!write_finale()) {
|
|
err = errno;
|
|
show_print_file_io_error(err);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
out:
|
|
wtap_close(cf->wth);
|
|
cf->wth = NULL;
|
|
|
|
g_free(save_file_string);
|
|
wtap_free_shb(shb_hdr);
|
|
wtap_free_nrb(nrb_hdr);
|
|
|
|
return err;
|
|
}
|
|
|
|
static gboolean
|
|
process_packet(capture_file *cf, epan_dissect_t *edt, gint64 offset, struct wtap_pkthdr *whdr,
|
|
const guchar *pd, guint tap_flags)
|
|
{
|
|
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, whdr, 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 (print_packet_info && (gbl_resolv_flags.mac_name || gbl_resolv_flags.network_name ||
|
|
gbl_resolv_flags.transport_name || gbl_resolv_flags.concurrent_dns))
|
|
/* Grab any resolved addresses */
|
|
host_name_lookup_process();
|
|
|
|
/* If we're running a filter, prime the epan_dissect_t with that
|
|
filter. */
|
|
if (cf->dfcode)
|
|
epan_dissect_prime_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_flags & TL_REQUIRES_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,
|
|
&ref, prev_dis);
|
|
if (ref == &fdata) {
|
|
ref_frame = fdata;
|
|
ref = &ref_frame;
|
|
}
|
|
|
|
epan_dissect_run_with_taps(edt, cf->cd_t, whdr, frame_tvbuff_new(&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);
|
|
|
|
/* 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 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. */
|
|
if (line_buffered)
|
|
fflush(stdout);
|
|
|
|
if (ferror(stdout)) {
|
|
show_print_file_io_error(errno);
|
|
exit(2);
|
|
}
|
|
}
|
|
|
|
/* this must be set after print_packet() [bug #8160] */
|
|
prev_dis_frame = fdata;
|
|
prev_dis = &prev_dis_frame;
|
|
}
|
|
|
|
prev_cap_frame = fdata;
|
|
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:
|
|
g_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;
|
|
switch (col_item->col_fmt) {
|
|
case COL_NUMBER:
|
|
column_len = col_len = strlen(col_item->col_data);
|
|
if (column_len < 3)
|
|
column_len = 3;
|
|
line_bufp = get_line_buf(buf_offset + column_len);
|
|
put_spaces_string(line_bufp + buf_offset, col_item->col_data, 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_item->col_data);
|
|
if (column_len < 10)
|
|
column_len = 10;
|
|
line_bufp = get_line_buf(buf_offset + column_len);
|
|
put_spaces_string(line_bufp + buf_offset, col_item->col_data, 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_item->col_data);
|
|
if (column_len < 12)
|
|
column_len = 12;
|
|
line_bufp = get_line_buf(buf_offset + column_len);
|
|
put_spaces_string(line_bufp + buf_offset, col_item->col_data, 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_item->col_data);
|
|
if (column_len < 12)
|
|
column_len = 12;
|
|
line_bufp = get_line_buf(buf_offset + column_len);
|
|
put_string_spaces(line_bufp + buf_offset, col_item->col_data, col_len, column_len);
|
|
break;
|
|
|
|
default:
|
|
column_len = strlen(col_item->col_data);
|
|
line_bufp = get_line_buf(buf_offset + column_len);
|
|
put_string(line_bufp + buf_offset, col_item->col_data, 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)
|
|
{
|
|
print_args_t print_args;
|
|
|
|
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);
|
|
return !ferror(stdout);
|
|
case WRITE_FIELDS: /*No non-verbose "fields" format */
|
|
g_assert_not_reached();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (print_details) {
|
|
/* Print the information in the protocol tree. */
|
|
switch (output_action) {
|
|
|
|
case WRITE_TEXT:
|
|
/* Only initialize the fields that are actually used in proto_tree_print.
|
|
* This is particularly important for .range, as that's heap memory which
|
|
* we would otherwise have to g_free().
|
|
print_args.to_file = TRUE;
|
|
print_args.format = print_format;
|
|
print_args.print_summary = print_summary;
|
|
print_args.print_formfeed = FALSE;
|
|
packet_range_init(&print_args.range, &cfile);
|
|
*/
|
|
print_args.print_hex = print_hex;
|
|
print_args.print_dissections = print_details ? print_dissections_expanded : print_dissections_none;
|
|
|
|
if (!proto_tree_print(&print_args, 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(edt, stdout);
|
|
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))
|
|
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:
|
|
g_assert_not_reached();
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
cf_status_t
|
|
cf_open(capture_file *cf, const char *fname, unsigned int type, gboolean is_tempfile, int *err)
|
|
{
|
|
wtap *wth;
|
|
gchar *err_info;
|
|
char err_msg[2048+1];
|
|
|
|
wth = wtap_open_offline(fname, type, err, &err_info, perform_two_pass_analysis);
|
|
if (wth == NULL)
|
|
goto fail;
|
|
|
|
/* The open succeeded. Fill in the information for this file. */
|
|
|
|
/* Create new epan session for dissection. */
|
|
epan_free(cf->epan);
|
|
cf->epan = tshark_epan_new(cf);
|
|
|
|
cf->wth = wth;
|
|
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 = wtap_file_type_subtype(cf->wth);
|
|
cf->open_type = type;
|
|
cf->count = 0;
|
|
cf->drops_known = FALSE;
|
|
cf->drops = 0;
|
|
cf->snap = wtap_snapshot_length(cf->wth);
|
|
if (cf->snap == 0) {
|
|
/* Snapshot length not known. */
|
|
cf->has_snap = FALSE;
|
|
cf->snap = WTAP_MAX_PACKET_SIZE;
|
|
} else
|
|
cf->has_snap = TRUE;
|
|
nstime_set_zero(&cf->elapsed_time);
|
|
ref = NULL;
|
|
prev_dis = NULL;
|
|
prev_cap = NULL;
|
|
|
|
cf->state = FILE_READ_IN_PROGRESS;
|
|
|
|
wtap_set_cb_new_ipv4(cf->wth, add_ipv4_name);
|
|
wtap_set_cb_new_ipv6(cf->wth, (wtap_new_ipv6_callback_t) add_ipv6_name);
|
|
|
|
return CF_OK;
|
|
|
|
fail:
|
|
g_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_capture_file_io_error(const char *fname, int err, gboolean is_close)
|
|
{
|
|
char *save_file_string;
|
|
|
|
save_file_string = output_file_description(fname);
|
|
|
|
switch (err) {
|
|
|
|
case ENOSPC:
|
|
cmdarg_err("Not all the packets could be written to the %s because there is "
|
|
"no space left on the file system.",
|
|
save_file_string);
|
|
break;
|
|
|
|
#ifdef EDQUOT
|
|
case EDQUOT:
|
|
cmdarg_err("Not all the packets could be written to the %s because you are "
|
|
"too close to, or over your disk quota.",
|
|
save_file_string);
|
|
break;
|
|
#endif
|
|
|
|
case WTAP_ERR_CANT_CLOSE:
|
|
cmdarg_err("The %s couldn't be closed for some unknown reason.",
|
|
save_file_string);
|
|
break;
|
|
|
|
case WTAP_ERR_SHORT_WRITE:
|
|
cmdarg_err("Not all the packets could be written to the %s.",
|
|
save_file_string);
|
|
break;
|
|
|
|
default:
|
|
if (is_close) {
|
|
cmdarg_err("The %s could not be closed: %s.", save_file_string,
|
|
wtap_strerror(err));
|
|
} else {
|
|
cmdarg_err("An error occurred while writing to the %s: %s.",
|
|
save_file_string, wtap_strerror(err));
|
|
}
|
|
break;
|
|
}
|
|
g_free(save_file_string);
|
|
}
|
|
|
|
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;
|
|
}
|
|
}
|
|
|
|
static const char *
|
|
cf_open_error_message(int err, gchar *err_info, gboolean for_writing,
|
|
int file_type)
|
|
{
|
|
const char *errmsg;
|
|
static char errmsg_errno[1024+1];
|
|
|
|
if (err < 0) {
|
|
/* Wiretap error. */
|
|
switch (err) {
|
|
|
|
case WTAP_ERR_NOT_REGULAR_FILE:
|
|
errmsg = "The file \"%s\" is a \"special file\" or socket or other non-regular file.";
|
|
break;
|
|
|
|
case WTAP_ERR_RANDOM_OPEN_PIPE:
|
|
/* Seen only when opening a capture file for reading. */
|
|
errmsg = "The file \"%s\" is a pipe or FIFO; TShark can't read pipe or FIFO files in two-pass mode.";
|
|
break;
|
|
|
|
case WTAP_ERR_FILE_UNKNOWN_FORMAT:
|
|
/* Seen only when opening a capture file for reading. */
|
|
errmsg = "The file \"%s\" isn't a capture file in a format TShark understands.";
|
|
break;
|
|
|
|
case WTAP_ERR_UNSUPPORTED:
|
|
/* Seen only when opening a capture file for reading. */
|
|
g_snprintf(errmsg_errno, sizeof(errmsg_errno),
|
|
"The file \"%%s\" contains record data that TShark doesn't support.\n"
|
|
"(%s)",
|
|
err_info != NULL ? err_info : "no information supplied");
|
|
g_free(err_info);
|
|
errmsg = errmsg_errno;
|
|
break;
|
|
|
|
case WTAP_ERR_CANT_WRITE_TO_PIPE:
|
|
/* Seen only when opening a capture file for writing. */
|
|
g_snprintf(errmsg_errno, sizeof(errmsg_errno),
|
|
"The file \"%%s\" is a pipe, and \"%s\" capture files can't be "
|
|
"written to a pipe.", wtap_file_type_subtype_short_string(file_type));
|
|
errmsg = errmsg_errno;
|
|
break;
|
|
|
|
case WTAP_ERR_UNWRITABLE_FILE_TYPE:
|
|
/* Seen only when opening a capture file for writing. */
|
|
errmsg = "TShark doesn't support writing capture files in that format.";
|
|
break;
|
|
|
|
case WTAP_ERR_UNWRITABLE_ENCAP:
|
|
/* Seen only when opening a capture file for writing. */
|
|
g_snprintf(errmsg_errno, sizeof(errmsg_errno),
|
|
"TShark can't save this capture as a \"%s\" file.",
|
|
wtap_file_type_subtype_short_string(file_type));
|
|
errmsg = errmsg_errno;
|
|
break;
|
|
|
|
case WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED:
|
|
if (for_writing) {
|
|
g_snprintf(errmsg_errno, sizeof(errmsg_errno),
|
|
"TShark can't save this capture as a \"%s\" file.",
|
|
wtap_file_type_subtype_short_string(file_type));
|
|
errmsg = errmsg_errno;
|
|
} else
|
|
errmsg = "The file \"%s\" is a capture for a network type that TShark doesn't support.";
|
|
break;
|
|
|
|
case WTAP_ERR_BAD_FILE:
|
|
/* Seen only when opening a capture file for reading. */
|
|
g_snprintf(errmsg_errno, sizeof(errmsg_errno),
|
|
"The file \"%%s\" appears to be damaged or corrupt.\n"
|
|
"(%s)",
|
|
err_info != NULL ? err_info : "no information supplied");
|
|
g_free(err_info);
|
|
errmsg = errmsg_errno;
|
|
break;
|
|
|
|
case WTAP_ERR_CANT_OPEN:
|
|
if (for_writing)
|
|
errmsg = "The file \"%s\" could not be created for some unknown reason.";
|
|
else
|
|
errmsg = "The file \"%s\" could not be opened for some unknown reason.";
|
|
break;
|
|
|
|
case WTAP_ERR_SHORT_READ:
|
|
errmsg = "The file \"%s\" appears to have been cut short"
|
|
" in the middle of a packet or other data.";
|
|
break;
|
|
|
|
case WTAP_ERR_SHORT_WRITE:
|
|
errmsg = "A full header couldn't be written to the file \"%s\".";
|
|
break;
|
|
|
|
case WTAP_ERR_COMPRESSION_NOT_SUPPORTED:
|
|
errmsg = "This file type cannot be written as a compressed file.";
|
|
break;
|
|
|
|
case WTAP_ERR_DECOMPRESS:
|
|
/* Seen only when opening a capture file for reading. */
|
|
g_snprintf(errmsg_errno, sizeof(errmsg_errno),
|
|
"The compressed file \"%%s\" appears to be damaged or corrupt.\n"
|
|
"(%s)",
|
|
err_info != NULL ? err_info : "no information supplied");
|
|
g_free(err_info);
|
|
errmsg = errmsg_errno;
|
|
break;
|
|
|
|
default:
|
|
g_snprintf(errmsg_errno, sizeof(errmsg_errno),
|
|
"The file \"%%s\" could not be %s: %s.",
|
|
for_writing ? "created" : "opened",
|
|
wtap_strerror(err));
|
|
errmsg = errmsg_errno;
|
|
break;
|
|
}
|
|
} else
|
|
errmsg = file_open_error_message(err, for_writing);
|
|
return errmsg;
|
|
}
|
|
|
|
/*
|
|
* Open/create errors are reported with an console message in TShark.
|
|
*/
|
|
static void
|
|
open_failure_message(const char *filename, int err, gboolean for_writing)
|
|
{
|
|
fprintf(stderr, "tshark: ");
|
|
fprintf(stderr, file_open_error_message(err, for_writing), filename);
|
|
fprintf(stderr, "\n");
|
|
}
|
|
|
|
/*
|
|
* General errors are reported with an console message in TShark.
|
|
*/
|
|
static void
|
|
failure_message(const char *msg_format, va_list ap)
|
|
{
|
|
fprintf(stderr, "tshark: ");
|
|
vfprintf(stderr, msg_format, ap);
|
|
fprintf(stderr, "\n");
|
|
}
|
|
|
|
/*
|
|
* Read errors are reported with an console message in TShark.
|
|
*/
|
|
static void
|
|
read_failure_message(const char *filename, int err)
|
|
{
|
|
cmdarg_err("An error occurred while reading from the file \"%s\": %s.",
|
|
filename, g_strerror(err));
|
|
}
|
|
|
|
/*
|
|
* Write errors are reported with an console message in TShark.
|
|
*/
|
|
static void
|
|
write_failure_message(const char *filename, int err)
|
|
{
|
|
cmdarg_err("An error occurred while writing to the file \"%s\": %s.",
|
|
filename, g_strerror(err));
|
|
}
|
|
|
|
/*
|
|
* Report additional information for an error in command-line arguments.
|
|
*/
|
|
static void
|
|
failure_message_cont(const char *msg_format, va_list ap)
|
|
{
|
|
vfprintf(stderr, msg_format, ap);
|
|
fprintf(stderr, "\n");
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - https://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local variables:
|
|
* c-basic-offset: 2
|
|
* tab-width: 8
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=2 tabstop=8 expandtab:
|
|
* :indentSize=2:tabSize=8:noTabs=true:
|
|
*/
|