af0691342b
--disable-all-protocols will mark all protocols as disabled by default, and then disable them. Certain protocols can then be enabled one by one by using --enable-protocol. --only-protocols is a helper option to make it easier to enable only certain protocols It's equivalent to passing --disable-all-protocols and then several --enable-protocol options. It accepts a comma separated list of protocols. First all protocols will be disabled, and then all protocols included in the list will be enabled one by one. Side-note, it wouldn't make much sense to enable only "tcp" for example without enabling the protocols in the lower layers (e.g: eth, sll, ip, ipv6). In this case, something like --only-protocols eth,sll,ip,ipv6,tcp will generally be needed in order to make sure that TCP is decoded. Signed-off-by: Juanma Sanchez <juasanch@redhat.com>
4733 lines
181 KiB
C
4733 lines
181 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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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include <config.h>
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#define WS_LOG_DOMAIN LOG_DOMAIN_MAIN
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <locale.h>
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#include <limits.h>
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#include <wsutil/ws_getopt.h>
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#include <errno.h>
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#ifdef _WIN32
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# include <winsock2.h>
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#endif
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#ifndef _WIN32
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#include <signal.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.h>
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#include <ws_exit_codes.h>
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#include <wsutil/clopts_common.h>
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#include <wsutil/cmdarg_err.h>
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#include <ui/urls.h>
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#include <wsutil/filesystem.h>
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#include <wsutil/file_util.h>
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#include <wsutil/socket.h>
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#include <wsutil/privileges.h>
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#include <wsutil/report_message.h>
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#include <wsutil/please_report_bug.h>
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#include <wsutil/wslog.h>
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#include <wsutil/ws_assert.h>
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#include <wsutil/strtoi.h>
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#include <cli_main.h>
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#include <wsutil/version_info.h>
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#include <wiretap/wtap_opttypes.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/decode_as.h>
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#include <epan/print.h>
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#include <epan/addr_resolv.h>
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#include <epan/enterprises.h>
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#include <epan/manuf.h>
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#include <epan/services.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/taps.h"
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#include "ui/util.h"
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#include "ui/ws_ui_util.h"
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#include "ui/decode_as_utils.h"
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#include "wsutil/filter_files.h"
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#include "ui/cli/tshark-tap.h"
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#include "ui/cli/tap-exportobject.h"
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#include "ui/tap_export_pdu.h"
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#include "ui/dissect_opts.h"
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#include "ui/ssl_key_export.h"
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#include "ui/failure_message.h"
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#if defined(HAVE_LIBSMI)
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#include "epan/oids.h"
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#endif
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#include "epan/maxmind_db.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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#include <epan/exported_pdu.h>
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#include <epan/secrets.h>
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#include "capture_opts.h"
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#include "capture/capture-pcap-util.h"
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#ifdef HAVE_LIBPCAP
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#include "capture/capture_ifinfo.h"
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#ifdef _WIN32
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#include "capture/capture-wpcap.h"
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#endif /* _WIN32 */
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#include <capture/capture_session.h>
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#include <capture/capture_sync.h>
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#include <ui/capture_info.h>
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#endif /* HAVE_LIBPCAP */
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#include <epan/funnel.h>
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#include <wsutil/str_util.h>
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#include <wsutil/utf8_entities.h>
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#include <wsutil/json_dumper.h>
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#include <wsutil/wslog.h>
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#ifdef _WIN32
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#include <wsutil/win32-utils.h>
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#endif
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#include "extcap.h"
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#ifdef HAVE_PLUGINS
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#include <wsutil/codecs.h>
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#include <wsutil/plugins.h>
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#endif
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/* Additional exit codes */
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#define INVALID_EXPORT 2
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#define INVALID_TAP 2
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#define INVALID_CAPTURE 2
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#define LONGOPT_EXPORT_OBJECTS LONGOPT_BASE_APPLICATION+1
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#define LONGOPT_COLOR LONGOPT_BASE_APPLICATION+2
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#define LONGOPT_NO_DUPLICATE_KEYS LONGOPT_BASE_APPLICATION+3
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#define LONGOPT_ELASTIC_MAPPING_FILTER LONGOPT_BASE_APPLICATION+4
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#define LONGOPT_EXPORT_TLS_SESSION_KEYS LONGOPT_BASE_APPLICATION+5
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#define LONGOPT_CAPTURE_COMMENT LONGOPT_BASE_APPLICATION+6
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#define LONGOPT_HEXDUMP LONGOPT_BASE_APPLICATION+7
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#define LONGOPT_SELECTED_FRAME LONGOPT_BASE_APPLICATION+8
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capture_file cfile;
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static guint32 cum_bytes;
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static frame_data ref_frame;
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static frame_data prev_dis_frame;
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static frame_data prev_cap_frame;
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static gboolean perform_two_pass_analysis;
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static guint32 epan_auto_reset_count = 0;
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static gboolean epan_auto_reset = FALSE;
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static guint32 selected_frame_number = 0;
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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_NONE, /* dummy initial state */
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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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WRITE_JSON, /* JSON */
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WRITE_JSON_RAW, /* JSON only raw hex */
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WRITE_EK /* JSON bulk insert to Elasticsearch */
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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 gboolean print_summary; /* 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/ascii information */
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static gboolean line_buffered;
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static gboolean quiet = FALSE;
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static gboolean really_quiet = FALSE;
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static gchar* delimiter_char = " ";
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static gboolean dissect_color = FALSE;
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static guint hexdump_source_option = HEXDUMP_SOURCE_MULTI; /* Default - Enable legacy multi-source mode */
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static guint hexdump_ascii_option = HEXDUMP_ASCII_INCLUDE; /* Default - Enable legacy undelimited ASCII dump */
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static print_format_e print_format = PR_FMT_TEXT;
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static print_stream_t *print_stream = NULL;
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static char *output_file_name;
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static output_fields_t* output_fields = NULL;
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static gboolean no_duplicate_keys = FALSE;
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static proto_node_children_grouper_func node_children_grouper = proto_node_group_children_by_unique;
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static json_dumper jdumper;
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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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/* Per-file comments to be added to the output file. */
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static GPtrArray *capture_comments = NULL;
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static gboolean prefs_loaded = FALSE;
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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 bool capture_input_new_file(capture_session *cap_session,
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gchar *new_file);
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static void capture_input_new_packets(capture_session *cap_session,
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int to_read);
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static void capture_input_drops(capture_session *cap_session, guint32 dropped,
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const char* interface_name);
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static void capture_input_error(capture_session *cap_session,
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char *error_msg, char *secondary_error_msg);
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static void capture_input_cfilter_error(capture_session *cap_session,
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guint i, const char *error_message);
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static void capture_input_closed(capture_session *cap_session, gchar *msg);
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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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#endif /* HAVE_LIBPCAP */
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static void reset_epan_mem(capture_file *cf, epan_dissect_t *edt, gboolean tree, gboolean visual);
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typedef enum {
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PROCESS_FILE_SUCCEEDED,
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PROCESS_FILE_NO_FILE_PROCESSED,
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PROCESS_FILE_ERROR,
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PROCESS_FILE_INTERRUPTED
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} process_file_status_t;
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static process_file_status_t process_cap_file(capture_file *, char *, int, gboolean, int, gint64, int);
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static gboolean process_packet_single_pass(capture_file *cf,
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epan_dissect_t *edt, gint64 offset, wtap_rec *rec, Buffer *buf,
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guint tap_flags);
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static void show_print_file_io_error(void);
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static gboolean write_preamble(capture_file *cf);
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static gboolean print_packet(capture_file *cf, epan_dissect_t *edt);
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static gboolean write_finale(void);
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static void tshark_cmdarg_err(const char *msg_format, va_list ap);
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static void tshark_cmdarg_err_cont(const char *msg_format, va_list ap);
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static GHashTable *output_only_tables = NULL;
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static void
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list_capture_types(void)
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{
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GArray *writable_type_subtypes;
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fprintf(stderr, "tshark: The available capture file types for the \"-F\" flag are:\n");
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writable_type_subtypes = wtap_get_writable_file_types_subtypes(FT_SORT_BY_NAME);
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for (guint i = 0; i < writable_type_subtypes->len; i++) {
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int ft = g_array_index(writable_type_subtypes, int, i);
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fprintf(stderr, " %s - %s\n", wtap_file_type_subtype_name(ft),
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wtap_file_type_subtype_description(ft));
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}
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g_array_free(writable_type_subtypes, TRUE);
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}
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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)
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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_read_capture_types(void)
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{
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guint i;
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size_t num_file_types;
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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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/* How many readable file types are there? */
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num_file_types = 0;
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for (i = 0; open_routines[i].name != NULL; i++)
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num_file_types++;
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captypes = g_new(struct string_elem, num_file_types);
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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; i < num_file_types && 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_free_full(list, string_elem_print);
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g_free(captypes);
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}
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static void
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list_export_pdu_taps(void)
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{
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fprintf(stderr, "tshark: The available export tap names and the encapsulation types they produce for the \"-U tap_name\" option are:\n");
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for (GSList *export_pdu_tap_name_list = get_export_pdu_tap_list();
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export_pdu_tap_name_list != NULL;
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export_pdu_tap_name_list = g_slist_next(export_pdu_tap_name_list)) {
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fprintf(stderr, " %s - %s\n", (const char*)(export_pdu_tap_name_list->data), wtap_encap_description(export_pdu_tap_get_encap((const char*)export_pdu_tap_name_list->data)));
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}
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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>, --interface <interface>\n");
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fprintf(output, " 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>, --snapshot-length <snaplen>\n");
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#ifdef HAVE_PCAP_CREATE
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fprintf(output, " packet snapshot length (def: appropriate maximum)\n");
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#else
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fprintf(output, " packet snapshot length (def: %u)\n", WTAP_MAX_PACKET_SIZE_STANDARD);
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#endif
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fprintf(output, " -p, --no-promiscuous-mode\n");
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fprintf(output, " don't capture in promiscuous mode\n");
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#ifdef HAVE_PCAP_CREATE
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fprintf(output, " -I, --monitor-mode 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>, --buffer-size <buffer size>\n");
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fprintf(output, " 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>, --linktype <link type>\n");
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fprintf(output, " link layer type (def: first appropriate)\n");
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fprintf(output, " --time-stamp-type <type> timestamp method for interface\n");
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fprintf(output, " -D, --list-interfaces print list of interfaces and exit\n");
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fprintf(output, " -L, --list-data-link-types\n");
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fprintf(output, " print list of link-layer types of iface and exit\n");
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fprintf(output, " --list-time-stamp-types print list of timestamp types for iface and exit\n");
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fprintf(output, " --update-interval interval between updates with new packets (def: %dms)\n", DEFAULT_UPDATE_INTERVAL);
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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.> ..., --autostop <autostop cond.> ...\n");
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fprintf(output, " 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, " packets:NUM - stop after NUM packets\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.> ..., --ring-buffer <ringbuffer opt.>\n");
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fprintf(output, " 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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fprintf(output, " packets:NUM - switch to next file after NUM packets\n");
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fprintf(output, " interval:NUM - switch to next file when the time is\n");
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fprintf(output, " an exact multiple of NUM secs\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>, --read-file <infile>\n");
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fprintf(output, " set the filename to read from (or '-' for stdin)\n");
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|
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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, " -M <packet count> perform session auto reset\n");
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|
fprintf(output, " -R <read filter>, --read-filter <read filter>\n");
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fprintf(output, " packet Read filter in Wireshark display filter syntax\n");
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fprintf(output, " (requires -2)\n");
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fprintf(output, " -Y <display filter>, --display-filter <display filter>\n");
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fprintf(output, " 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: \"mNd\" enabled, or\n");
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fprintf(output, " as set in preferences)\n");
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fprintf(output, " -N <name resolve flags> enable specific name resolution(s): \"mnNtdv\"\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, " --enable-protocol <proto_name>\n");
|
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fprintf(output, " enable dissection of proto_name\n");
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|
fprintf(output, " --disable-protocol <proto_name>\n");
|
|
fprintf(output, " disable dissection of proto_name\n");
|
|
fprintf(output, " --only-protocols <protocols>\n");
|
|
fprintf(output, " Only enable dissection of these protocols, comma\n");
|
|
fprintf(output, " separated. Disable everything else\n");
|
|
fprintf(output, " --disable-all-protocols\n");
|
|
fprintf(output, " Disable dissection of all protocols\n");
|
|
fprintf(output, " --enable-heuristic <short_name>\n");
|
|
fprintf(output, " enable dissection of heuristic protocol\n");
|
|
fprintf(output, " --disable-heuristic <short_name>\n");
|
|
fprintf(output, " disable dissection of heuristic protocol\n");
|
|
|
|
/*fprintf(output, "\n");*/
|
|
fprintf(output, "Output:\n");
|
|
fprintf(output, " -w <outfile|-> write packets to a pcapng-format file named \"outfile\"\n");
|
|
fprintf(output, " (or '-' for stdout)\n");
|
|
fprintf(output, " --capture-comment <comment>\n");
|
|
fprintf(output, " add a capture file comment, if supported\n");
|
|
fprintf(output, " -C <config profile> start with specified configuration profile\n");
|
|
fprintf(output, " -F <output file type> set the output file type, default is pcapng\n");
|
|
fprintf(output, " an empty \"-F\" option will list the file types\n");
|
|
fprintf(output, " -V add output of packet tree (Packet Details)\n");
|
|
fprintf(output, " -O <protocols> Only show packet details of these protocols, comma\n");
|
|
fprintf(output, " separated\n");
|
|
fprintf(output, " -P, --print print packet summary even when writing to a file\n");
|
|
fprintf(output, " -S <separator> the line separator to print between packets\n");
|
|
fprintf(output, " -x add output of hex and ASCII dump (Packet Bytes)\n");
|
|
fprintf(output, " --hexdump <hexoption> add hexdump, set options for data source and ASCII dump\n");
|
|
fprintf(output, " all dump all data sources (-x default)\n");
|
|
fprintf(output, " frames dump only frame data source\n");
|
|
fprintf(output, " ascii include ASCII dump text (-x default)\n");
|
|
fprintf(output, " delimit delimit ASCII dump text with '|' characters\n");
|
|
fprintf(output, " noascii exclude ASCII dump text\n");
|
|
fprintf(output, " help display help for --hexdump and exit\n");
|
|
fprintf(output, " -T pdml|ps|psml|json|jsonraw|ek|tabs|text|fields|?\n");
|
|
fprintf(output, " format of text output (def: text)\n");
|
|
fprintf(output, " -j <protocolfilter> protocols layers filter if -T ek|pdml|json selected\n");
|
|
fprintf(output, " (e.g. \"ip ip.flags text\", filter does not expand child\n");
|
|
fprintf(output, " nodes, unless child is specified also in the filter)\n");
|
|
fprintf(output, " -J <protocolfilter> top level protocol filter if -T ek|pdml|json selected\n");
|
|
fprintf(output, " (e.g. \"http tcp\", filter which expands all child nodes)\n");
|
|
fprintf(output, " -e <field> field to print if -Tfields selected (e.g. tcp.port,\n");
|
|
fprintf(output, " _ws.col.info)\n");
|
|
fprintf(output, " this option can be repeated to print multiple fields\n");
|
|
fprintf(output, " -E<fieldsoption>=<value> set options for output when -Tfields selected:\n");
|
|
fprintf(output, " bom=y|n print a UTF-8 BOM\n");
|
|
fprintf(output, " header=y|n switch headers on and off\n");
|
|
fprintf(output, " separator=/t|/s|<char> select tab, space, printable character as separator\n");
|
|
fprintf(output, " occurrence=f|l|a print first, last or all occurrences of each field\n");
|
|
fprintf(output, " aggregator=,|/s|<char> select comma, space, printable character as\n");
|
|
fprintf(output, " aggregator\n");
|
|
fprintf(output, " quote=d|s|n select double, single, no quotes for values\n");
|
|
fprintf(output, " -t (a|ad|adoy|d|dd|e|r|u|ud|udoy)[.[N]]|.[N]\n");
|
|
fprintf(output, " output format of time stamps (def: r: rel. to first)\n");
|
|
fprintf(output, " -u s|hms output format of seconds (def: s: seconds)\n");
|
|
fprintf(output, " -l flush standard output after each packet\n");
|
|
fprintf(output, " -q be more quiet on stdout (e.g. when using statistics)\n");
|
|
fprintf(output, " -Q only log true errors to stderr (quieter than -q)\n");
|
|
fprintf(output, " -g enable group read access on the output file(s)\n");
|
|
fprintf(output, " -W n Save extra information in the file, if supported.\n");
|
|
fprintf(output, " n = write network address resolution information\n");
|
|
fprintf(output, " -X <key>:<value> eXtension options, see the man page for details\n");
|
|
fprintf(output, " -U tap_name PDUs export mode, see the man page for details\n");
|
|
fprintf(output, " -z <statistics> various statistics, see the man page for details\n");
|
|
fprintf(output, " --export-objects <protocol>,<destdir>\n");
|
|
fprintf(output, " save exported objects for a protocol to a directory\n");
|
|
fprintf(output, " named \"destdir\"\n");
|
|
fprintf(output, " --export-tls-session-keys <keyfile>\n");
|
|
fprintf(output, " export TLS Session Keys to a file named \"keyfile\"\n");
|
|
fprintf(output, " --color color output text similarly to the Wireshark GUI,\n");
|
|
fprintf(output, " requires a terminal with 24-bit color support\n");
|
|
fprintf(output, " Also supplies color attributes to pdml and psml formats\n");
|
|
fprintf(output, " (Note that attributes are nonstandard)\n");
|
|
fprintf(output, " --no-duplicate-keys If -T json is specified, merge duplicate keys in an object\n");
|
|
fprintf(output, " into a single key with as value a json array containing all\n");
|
|
fprintf(output, " values\n");
|
|
fprintf(output, " --elastic-mapping-filter <protocols> If -G elastic-mapping is specified, put only the\n");
|
|
fprintf(output, " specified protocols within the mapping file\n");
|
|
fprintf(output, " --temp-dir <directory> write temporary files to this directory\n");
|
|
fprintf(output, " (default: %s)\n", g_get_tmp_dir());
|
|
fprintf(output, "\n");
|
|
|
|
ws_log_print_usage(output);
|
|
fprintf(output, "\n");
|
|
|
|
fprintf(output, "Miscellaneous:\n");
|
|
fprintf(output, " -h, --help display this help and exit\n");
|
|
fprintf(output, " -v, --version display version info and exit\n");
|
|
fprintf(output, " -o <name>:<value> ... override preference setting\n");
|
|
fprintf(output, " -K <keytab> keytab file to use for kerberos decryption\n");
|
|
fprintf(output, " -G [report] dump one of several available reports and exit\n");
|
|
fprintf(output, " default report=\"fields\"\n");
|
|
fprintf(output, " use \"-G help\" for more help\n");
|
|
#ifdef __linux__
|
|
fprintf(output, "\n");
|
|
fprintf(output, "Dumpcap can benefit from an enabled BPF JIT compiler if available.\n");
|
|
fprintf(output, "You might want to enable it by executing:\n");
|
|
fprintf(output, " \"echo 1 > /proc/sys/net/core/bpf_jit_enable\"\n");
|
|
fprintf(output, "Note that this can make your system less secure!\n");
|
|
#endif
|
|
|
|
}
|
|
|
|
static void
|
|
glossary_option_help(void)
|
|
{
|
|
FILE *output;
|
|
|
|
output = stdout;
|
|
|
|
fprintf(output, "%s\n", get_appname_and_version());
|
|
|
|
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 dissectors dump registered dissector names\n");
|
|
fprintf(output, " -G elastic-mapping dump ElasticSearch mapping file\n");
|
|
fprintf(output, " -G enterprises dump IANA Private Enterprise Number (PEN) table\n");
|
|
fprintf(output, " -G fieldcount dump count of header fields and exit\n");
|
|
fprintf(output, " -G fields [prefix] 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 manuf dump ethernet manufacturer 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 services dump transport service (port) names\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, " -G folders dump about:folders\n");
|
|
fprintf(output, "\n");
|
|
}
|
|
|
|
static void
|
|
hexdump_option_help(FILE *output)
|
|
{
|
|
fprintf(output, "%s\n", get_appname_and_version());
|
|
fprintf(output, "\n");
|
|
fprintf(output, "tshark: Valid --hexdump <hexoption> values include:\n");
|
|
fprintf(output, "\n");
|
|
fprintf(output, "Data source options:\n");
|
|
fprintf(output, " all add hexdump, dump all data sources (-x default)\n");
|
|
fprintf(output, " frames add hexdump, dump only frame data source\n");
|
|
fprintf(output, "\n");
|
|
fprintf(output, "ASCII options:\n");
|
|
fprintf(output, " ascii add hexdump, include ASCII dump text (-x default)\n");
|
|
fprintf(output, " delimit add hexdump, delimit ASCII dump text with '|' characters\n");
|
|
fprintf(output, " noascii add hexdump, exclude ASCII dump text\n");
|
|
fprintf(output, "\n");
|
|
fprintf(output, "Miscellaneous:\n");
|
|
fprintf(output, " help display this help and exit\n");
|
|
fprintf(output, "\n");
|
|
fprintf(output, "Example:\n");
|
|
fprintf(output, "\n");
|
|
fprintf(output, " $ tshark ... --hexdump frames --hexdump delimit ...\n");
|
|
fprintf(output, "\n");
|
|
}
|
|
|
|
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
|
|
gather_tshark_compile_info(feature_list l)
|
|
{
|
|
/* Capture libraries */
|
|
gather_caplibs_compile_info(l);
|
|
epan_gather_compile_info(l);
|
|
}
|
|
|
|
static void
|
|
gather_tshark_runtime_info(feature_list l)
|
|
{
|
|
#ifdef HAVE_LIBPCAP
|
|
gather_caplibs_runtime_info(l);
|
|
#endif
|
|
|
|
/* stuff used by libwireshark */
|
|
epan_gather_runtime_info(l);
|
|
}
|
|
|
|
static gboolean
|
|
_compile_dfilter(const char *text, dfilter_t **dfp, const char *caller)
|
|
{
|
|
gboolean ok;
|
|
df_error_t *df_err;
|
|
char *err_off;
|
|
char *expanded;
|
|
|
|
expanded = dfilter_expand(text, &df_err);
|
|
if (expanded == NULL) {
|
|
cmdarg_err("%s", df_err->msg);
|
|
df_error_free(&df_err);
|
|
return FALSE;
|
|
}
|
|
|
|
ok = dfilter_compile_full(expanded, dfp, &df_err, DF_OPTIMIZE, caller);
|
|
if (!ok ) {
|
|
cmdarg_err("%s", df_err->msg);
|
|
|
|
if (df_err->loc.col_start >= 0) {
|
|
err_off = ws_strdup_underline(NULL, df_err->loc.col_start, df_err->loc.col_len);
|
|
cmdarg_err_cont(" %s", expanded);
|
|
cmdarg_err_cont(" %s", err_off);
|
|
g_free(err_off);
|
|
}
|
|
df_error_free(&df_err);
|
|
}
|
|
|
|
g_free(expanded);
|
|
return ok;
|
|
}
|
|
|
|
#define compile_dfilter(text, dfp) _compile_dfilter(text, dfp, __func__)
|
|
|
|
static gboolean
|
|
protocolfilter_add_opt(const char* arg, pf_flags filter_flags)
|
|
{
|
|
gchar **newfilter = NULL;
|
|
for (newfilter = wmem_strsplit(wmem_epan_scope(), arg, " ", -1); *newfilter; newfilter++) {
|
|
if (strcmp(*newfilter, "") == 0) {
|
|
/* Don't treat the empty string as an intended field abbreviation
|
|
* to output, consecutive spaces on the command line probably
|
|
* aren't intentional.
|
|
*/
|
|
continue;
|
|
}
|
|
if (!output_fields_add_protocolfilter(output_fields, *newfilter, filter_flags)) {
|
|
cmdarg_err("%s was already specified with different filter flags. Overwriting previous protocol filter.", *newfilter);
|
|
}
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
about_folders(void)
|
|
{
|
|
const char *constpath;
|
|
char *path;
|
|
gint i;
|
|
gchar **resultArray;
|
|
|
|
/* "file open" */
|
|
|
|
/*
|
|
* Fetching the "File" dialogs folder not implemented.
|
|
* This is arguably just a pwd for a ui/cli .
|
|
*/
|
|
|
|
/* temp */
|
|
constpath = g_get_tmp_dir();
|
|
#ifdef HAVE_LIBPCAP
|
|
/* global_capture_opts only exists in this case */
|
|
if (global_capture_opts.temp_dir)
|
|
constpath = global_capture_opts.temp_dir;
|
|
#endif
|
|
printf("%-21s\t%s\n", "Temp:", constpath);
|
|
|
|
/* pers conf */
|
|
path = get_persconffile_path("", FALSE);
|
|
printf("%-21s\t%s\n", "Personal configuration:", path);
|
|
g_free(path);
|
|
|
|
/* global conf */
|
|
constpath = get_datafile_dir();
|
|
if (constpath != NULL) {
|
|
printf("%-21s\t%s\n", "Global configuration:", constpath);
|
|
}
|
|
|
|
/* system */
|
|
constpath = get_systemfile_dir();
|
|
printf("%-21s\t%s\n", "System:", constpath);
|
|
|
|
/* program */
|
|
constpath = get_progfile_dir();
|
|
printf("%-21s\t%s\n", "Program:", constpath);
|
|
|
|
#ifdef HAVE_PLUGINS
|
|
/* pers plugins */
|
|
printf("%-21s\t%s\n", "Personal Plugins:", get_plugins_pers_dir_with_version());
|
|
|
|
/* global plugins */
|
|
printf("%-21s\t%s\n", "Global Plugins:", get_plugins_dir_with_version());
|
|
#endif
|
|
|
|
#ifdef HAVE_LUA
|
|
/* pers lua plugins */
|
|
printf("%-21s\t%s\n", "Personal Lua Plugins:", get_plugins_pers_dir());
|
|
|
|
/* global lua plugins */
|
|
printf("%-21s\t%s\n", "Global Lua Plugins:", get_plugins_dir());
|
|
#endif
|
|
|
|
/* Personal Extcap */
|
|
constpath = get_extcap_pers_dir();
|
|
|
|
resultArray = g_strsplit(constpath, G_SEARCHPATH_SEPARATOR_S, 10);
|
|
for(i = 0; resultArray[i]; i++)
|
|
printf("%-21s\t%s\n", "Personal Extcap path:", g_strstrip(resultArray[i]));
|
|
|
|
g_strfreev(resultArray);
|
|
|
|
/* Global Extcap */
|
|
constpath = get_extcap_dir();
|
|
|
|
resultArray = g_strsplit(constpath, G_SEARCHPATH_SEPARATOR_S, 10);
|
|
for(i = 0; resultArray[i]; i++)
|
|
printf("%-21s\t%s\n", "Global Extcap path:", g_strstrip(resultArray[i]));
|
|
|
|
g_strfreev(resultArray);
|
|
|
|
/* MaxMindDB */
|
|
path = maxmind_db_get_paths();
|
|
|
|
resultArray = g_strsplit(path, G_SEARCHPATH_SEPARATOR_S, 10);
|
|
|
|
for(i = 0; resultArray[i]; i++)
|
|
printf("%-21s\t%s\n", "MaxMind database path:", g_strstrip(resultArray[i]));
|
|
|
|
g_strfreev(resultArray);
|
|
g_free(path);
|
|
|
|
#ifdef HAVE_LIBSMI
|
|
/* SMI MIBs/PIBs */
|
|
path = oid_get_default_mib_path();
|
|
|
|
resultArray = g_strsplit(path, G_SEARCHPATH_SEPARATOR_S, 20);
|
|
|
|
for(i = 0; resultArray[i]; i++)
|
|
printf("%-21s\t%s\n", "MIB/PIB path:", g_strstrip(resultArray[i]));
|
|
|
|
g_strfreev(resultArray);
|
|
g_free(path);
|
|
#endif
|
|
|
|
}
|
|
|
|
static gboolean
|
|
must_do_dissection(dfilter_t *rfcode, dfilter_t *dfcode,
|
|
gchar *volatile pdu_export_arg)
|
|
{
|
|
/* 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 exporting PDUs;
|
|
|
|
we're using any taps that need dissection. */
|
|
return print_packet_info || rfcode || dfcode || pdu_export_arg ||
|
|
tap_listeners_require_dissection() || dissect_color;
|
|
}
|
|
|
|
#ifdef HAVE_LIBPCAP
|
|
/*
|
|
* Check whether a purported *shark packet-matching expression (display
|
|
* or read filter) looks like a capture filter and, if so, print a
|
|
* warning.
|
|
*
|
|
* Used, for example, if the string in question isn't a valid packet-
|
|
* matching expression.
|
|
*/
|
|
static void
|
|
warn_about_capture_filter(const char *rfilter)
|
|
{
|
|
struct bpf_program fcode;
|
|
pcap_t *pc;
|
|
|
|
pc = pcap_open_dead(DLT_EN10MB, MIN_PACKET_SIZE);
|
|
if (pc != NULL) {
|
|
if (pcap_compile(pc, &fcode, rfilter, 0, 0) != -1) {
|
|
pcap_freecode(&fcode);
|
|
cmdarg_err_cont(
|
|
" Note: That read filter code looks like a valid capture filter;\n"
|
|
" maybe you mixed them up?");
|
|
}
|
|
pcap_close(pc);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
char *err_msg;
|
|
static const struct report_message_routines tshark_report_routines = {
|
|
failure_message,
|
|
failure_message,
|
|
open_failure_message,
|
|
read_failure_message,
|
|
write_failure_message,
|
|
cfile_open_failure_message,
|
|
cfile_dump_open_failure_message,
|
|
cfile_read_failure_message,
|
|
cfile_write_failure_message,
|
|
cfile_close_failure_message
|
|
};
|
|
int opt;
|
|
static const struct ws_option long_options[] = {
|
|
{"help", ws_no_argument, NULL, 'h'},
|
|
{"version", ws_no_argument, NULL, 'v'},
|
|
LONGOPT_CAPTURE_COMMON
|
|
LONGOPT_DISSECT_COMMON
|
|
{"print", ws_no_argument, NULL, 'P'},
|
|
{"export-objects", ws_required_argument, NULL, LONGOPT_EXPORT_OBJECTS},
|
|
{"export-tls-session-keys", ws_required_argument, NULL, LONGOPT_EXPORT_TLS_SESSION_KEYS},
|
|
{"color", ws_no_argument, NULL, LONGOPT_COLOR},
|
|
{"no-duplicate-keys", ws_no_argument, NULL, LONGOPT_NO_DUPLICATE_KEYS},
|
|
{"elastic-mapping-filter", ws_required_argument, NULL, LONGOPT_ELASTIC_MAPPING_FILTER},
|
|
{"capture-comment", ws_required_argument, NULL, LONGOPT_CAPTURE_COMMENT},
|
|
{"hexdump", ws_required_argument, NULL, LONGOPT_HEXDUMP},
|
|
{"selected-frame", ws_required_argument, NULL, LONGOPT_SELECTED_FRAME},
|
|
{0, 0, 0, 0}
|
|
};
|
|
gboolean arg_error = FALSE;
|
|
gboolean has_extcap_options = FALSE;
|
|
|
|
int err;
|
|
gchar *err_info;
|
|
gboolean exp_pdu_status;
|
|
volatile process_file_status_t status;
|
|
volatile gboolean draw_taps = FALSE;
|
|
volatile int exit_status = EXIT_SUCCESS;
|
|
#ifdef HAVE_LIBPCAP
|
|
int caps_queries = 0;
|
|
GList *if_list;
|
|
gchar *err_str, *err_str_secondary;
|
|
#else
|
|
gboolean capture_option_specified = FALSE;
|
|
volatile int max_packet_count = 0;
|
|
#endif
|
|
volatile int out_file_type = WTAP_FILE_TYPE_SUBTYPE_UNKNOWN;
|
|
volatile gboolean out_file_name_res = FALSE;
|
|
volatile int in_file_type = WTAP_TYPE_AUTO;
|
|
gchar *volatile cf_name = NULL;
|
|
gchar *rfilter = NULL;
|
|
gchar *volatile dfilter = NULL;
|
|
dfilter_t *rfcode = NULL;
|
|
dfilter_t *dfcode = NULL;
|
|
e_prefs *prefs_p;
|
|
gchar *output_only = NULL;
|
|
gchar *volatile pdu_export_arg = NULL;
|
|
char *volatile exp_pdu_filename = NULL;
|
|
const gchar *volatile tls_session_keys_file = NULL;
|
|
exp_pdu_t exp_pdu_tap_data;
|
|
const gchar* elastic_mapping_filter = NULL;
|
|
const char *endptr;
|
|
|
|
/*
|
|
* 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 macOS 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 OPTSTRING_DISSECT_COMMON "M:C:e:E:F:gG:hH:j:J:lo:O:PqQr:R:S:T:U:vVw:W:xX:Y:z:"
|
|
|
|
static const char optstring[] = OPTSTRING;
|
|
|
|
/*
|
|
* Set the C-language locale to the native environment and set the
|
|
* code page to UTF-8 on Windows.
|
|
*/
|
|
#ifdef _WIN32
|
|
setlocale(LC_ALL, ".UTF-8");
|
|
#else
|
|
setlocale(LC_ALL, "");
|
|
#endif
|
|
|
|
cmdarg_err_init(tshark_cmdarg_err, tshark_cmdarg_err_cont);
|
|
|
|
/* Initialize log handler early so we can have proper logging during startup. */
|
|
ws_log_init("tshark", vcmdarg_err);
|
|
|
|
/* Early logging command-line initialization. */
|
|
ws_log_parse_args(&argc, argv, vcmdarg_err, WS_EXIT_INVALID_OPTION);
|
|
|
|
ws_noisy("Finished log init and parsing command line log arguments");
|
|
ws_debug("tshark started with %d args", argc);
|
|
|
|
#ifdef _WIN32
|
|
create_app_running_mutex();
|
|
#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 directory containing the
|
|
* executable file.
|
|
*/
|
|
err_msg = configuration_init(argv[0], NULL);
|
|
if (err_msg != NULL) {
|
|
fprintf(stderr,
|
|
"tshark: Can't get pathname of directory containing the tshark program: %s.\n"
|
|
"It won't be possible to capture traffic.\n"
|
|
"Report this to the Wireshark developers.",
|
|
err_msg);
|
|
g_free(err_msg);
|
|
}
|
|
|
|
initialize_funnel_ops();
|
|
|
|
#ifdef _WIN32
|
|
ws_init_dll_search_path();
|
|
#ifdef HAVE_LIBPCAP
|
|
/* Load wpcap if possible. Do this before collecting the run-time version information */
|
|
load_wpcap();
|
|
#endif /* HAVE_LIBPCAP */
|
|
#endif /* _WIN32 */
|
|
|
|
/* Initialize the version information. */
|
|
ws_init_version_info("TShark",
|
|
gather_tshark_compile_info, gather_tshark_runtime_info);
|
|
|
|
/* Fail sometimes. Useful for testing fuzz scripts. */
|
|
/* if (g_random_int_range(0, 100) < 5) abort(); */
|
|
|
|
/*
|
|
* 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.
|
|
*
|
|
* Spawning a bunch of extcap processes can delay program startup,
|
|
* particularly on Windows. Check to see if we have any options that
|
|
* might require extcap and set has_extcap_options = TRUE if that's
|
|
* the case.
|
|
*
|
|
* 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?
|
|
*/
|
|
ws_opterr = 0;
|
|
|
|
while ((opt = ws_getopt_long(argc, argv, optstring, long_options, NULL)) != -1) {
|
|
switch (opt) {
|
|
case 'C': /* Configuration Profile */
|
|
if (profile_exists (ws_optarg, FALSE)) {
|
|
set_profile_name (ws_optarg);
|
|
} else if (profile_exists (ws_optarg, TRUE)) {
|
|
char *pf_dir_path, *pf_dir_path2, *pf_filename;
|
|
/* Copy from global profile */
|
|
if (create_persconffile_profile(ws_optarg, &pf_dir_path) == -1) {
|
|
cmdarg_err("Can't create directory\n\"%s\":\n%s.",
|
|
pf_dir_path, g_strerror(errno));
|
|
|
|
g_free(pf_dir_path);
|
|
exit_status = WS_EXIT_INVALID_FILE;
|
|
goto clean_exit;
|
|
}
|
|
if (copy_persconffile_profile(ws_optarg, ws_optarg, TRUE, &pf_filename,
|
|
&pf_dir_path, &pf_dir_path2) == -1) {
|
|
cmdarg_err("Can't copy file \"%s\" in directory\n\"%s\" to\n\"%s\":\n%s.",
|
|
pf_filename, pf_dir_path2, pf_dir_path, g_strerror(errno));
|
|
|
|
g_free(pf_filename);
|
|
g_free(pf_dir_path);
|
|
g_free(pf_dir_path2);
|
|
exit_status = WS_EXIT_INVALID_FILE;
|
|
goto clean_exit;
|
|
}
|
|
set_profile_name (ws_optarg);
|
|
} else {
|
|
cmdarg_err("Configuration Profile \"%s\" does not exist", ws_optarg);
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
break;
|
|
case 'G':
|
|
if (g_str_has_suffix(ws_optarg, "prefs") || strcmp(ws_optarg, "folders") == 0) {
|
|
has_extcap_options = TRUE;
|
|
}
|
|
break;
|
|
case 'i':
|
|
has_extcap_options = TRUE;
|
|
break;
|
|
case 'o':
|
|
if (g_str_has_prefix(ws_optarg, "extcap.")) {
|
|
has_extcap_options = TRUE;
|
|
}
|
|
break;
|
|
case 'P': /* Print packet summary info even when writing to a file */
|
|
print_packet_info = TRUE;
|
|
print_summary = TRUE;
|
|
break;
|
|
case 'r': /* Read capture file x */
|
|
cf_name = g_strdup(ws_optarg);
|
|
break;
|
|
case 'O': /* Only output these protocols */
|
|
output_only = g_strdup(ws_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(ws_optarg);
|
|
break;
|
|
case LONGOPT_ELASTIC_MAPPING_FILTER:
|
|
elastic_mapping_filter = ws_optarg;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
#ifndef HAVE_LUA
|
|
if (ex_opt_count("lua_script") > 0) {
|
|
cmdarg_err("This version of TShark was not built with support for Lua scripting.");
|
|
exit_status = WS_EXIT_INIT_FAILED;
|
|
goto clean_exit;
|
|
}
|
|
#endif /* HAVE_LUA */
|
|
|
|
init_report_message("TShark", &tshark_report_routines);
|
|
|
|
#ifdef HAVE_LIBPCAP
|
|
capture_opts_init(&global_capture_opts);
|
|
capture_session_init(&global_capture_session, &cfile,
|
|
capture_input_new_file, capture_input_new_packets,
|
|
capture_input_drops, capture_input_error,
|
|
capture_input_cfilter_error, capture_input_closed);
|
|
#endif
|
|
|
|
timestamp_set_type(TS_RELATIVE);
|
|
timestamp_set_precision(TS_PREC_AUTO);
|
|
timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
|
|
|
|
/*
|
|
* Libwiretap must be initialized before libwireshark is, so that
|
|
* dissection-time handlers for file-type-dependent blocks can
|
|
* register using the file type/subtype value for the file type.
|
|
*/
|
|
wtap_init(TRUE);
|
|
|
|
/* Register all dissectors; we must do this before checking for the
|
|
"-G" flag, as the "-G" flag dumps information registered by the
|
|
dissectors, and we must do it before we read the preferences, in
|
|
case any dissectors register preferences. */
|
|
if (!epan_init(NULL, NULL, TRUE)) {
|
|
exit_status = WS_EXIT_INIT_FAILED;
|
|
goto clean_exit;
|
|
}
|
|
|
|
/* Register all tap listeners; we do this before we parse the arguments,
|
|
as the "-z" argument can specify a registered tap. */
|
|
|
|
register_all_tap_listeners(tap_reg_listener);
|
|
|
|
/*
|
|
* An empty cf_name indicates that we're capturing, and we might
|
|
* be doing so on an extcap interface.
|
|
*/
|
|
if (has_extcap_options || !cf_name) {
|
|
extcap_register_preferences();
|
|
}
|
|
|
|
conversation_table_set_gui_info(init_iousers);
|
|
endpoint_table_set_gui_info(init_endpoints);
|
|
srt_table_iterate_tables(register_srt_tables, NULL);
|
|
rtd_table_iterate_tables(register_rtd_tables, NULL);
|
|
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) {
|
|
epan_load_settings();
|
|
write_prefs(NULL);
|
|
}
|
|
else if (strcmp(argv[2], "decodes") == 0)
|
|
dissector_dump_decodes();
|
|
else if (strcmp(argv[2], "defaultprefs") == 0)
|
|
write_prefs(NULL);
|
|
else if (strcmp(argv[2], "dissector-tables") == 0)
|
|
dissector_dump_dissector_tables();
|
|
else if (strcmp(argv[2], "dissectors") == 0)
|
|
dissector_dump_dissectors();
|
|
else if (strcmp(argv[2], "elastic-mapping") == 0)
|
|
proto_registrar_dump_elastic(elastic_mapping_filter);
|
|
else if (strcmp(argv[2], "fieldcount") == 0) {
|
|
/* return value for the test suite */
|
|
exit_status = proto_registrar_dump_fieldcount();
|
|
goto clean_exit;
|
|
}
|
|
else if (strcmp(argv[2], "fields") == 0) {
|
|
if (argc >= 4) {
|
|
gboolean matched = proto_registrar_dump_field_completions(argv[3]);
|
|
if (!matched) {
|
|
cmdarg_err("No field or protocol begins with \"%s\"", argv[3]);
|
|
exit_status = EXIT_FAILURE;
|
|
goto clean_exit;
|
|
}
|
|
}
|
|
else {
|
|
proto_registrar_dump_fields();
|
|
}
|
|
}
|
|
else if (strcmp(argv[2], "folders") == 0) {
|
|
epan_load_settings();
|
|
about_folders();
|
|
} 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], "manuf") == 0)
|
|
ws_manuf_dump(stdout);
|
|
else if (strcmp(argv[2], "enterprises") == 0)
|
|
global_enterprises_dump(stdout);
|
|
else if (strcmp(argv[2], "services") == 0)
|
|
global_services_dump(stdout);
|
|
else if (strcmp(argv[2], "plugins") == 0) {
|
|
#ifdef HAVE_PLUGINS
|
|
codecs_init();
|
|
plugins_dump_all();
|
|
#endif
|
|
#ifdef HAVE_LUA
|
|
wslua_plugins_dump_all();
|
|
#endif
|
|
extcap_dump_all();
|
|
}
|
|
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], "help") == 0)
|
|
glossary_option_help();
|
|
/* These are supported only for backwards compatibility and may or may not work
|
|
* for a given user in a given directory on a given operating system with a given
|
|
* command-line interpreter.
|
|
*/
|
|
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 help for more help.", argv[2]);
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
}
|
|
exit_status = EXIT_SUCCESS;
|
|
goto clean_exit;
|
|
}
|
|
|
|
ws_debug("tshark reading settings");
|
|
|
|
/* Load libwireshark settings from the current profile. */
|
|
prefs_p = epan_load_settings();
|
|
prefs_loaded = TRUE;
|
|
|
|
read_filter_list(CFILTER_LIST);
|
|
|
|
cap_file_init(&cfile);
|
|
|
|
/* Print format defaults to this. */
|
|
print_format = PR_FMT_TEXT;
|
|
delimiter_char = " ";
|
|
|
|
output_fields = output_fields_new();
|
|
|
|
/*
|
|
* To reset the options parser, set ws_optreset to 1 and set ws_optind to 1.
|
|
*
|
|
* Also reset ws_opterr to 1, so that error messages are printed by
|
|
* getopt_long().
|
|
*/
|
|
ws_optreset = 1;
|
|
ws_optind = 1;
|
|
ws_opterr = 1;
|
|
|
|
/* Now get our args */
|
|
while ((opt = ws_getopt_long(argc, argv, optstring, long_options, NULL)) != -1) {
|
|
switch (opt) {
|
|
case '2': /* Perform two-pass analysis */
|
|
if(epan_auto_reset){
|
|
cmdarg_err("-2 does not support auto session reset.");
|
|
arg_error=TRUE;
|
|
}
|
|
perform_two_pass_analysis = TRUE;
|
|
break;
|
|
case 'M':
|
|
if(perform_two_pass_analysis){
|
|
cmdarg_err("-M does not support two-pass analysis.");
|
|
arg_error=TRUE;
|
|
}
|
|
epan_auto_reset_count = get_positive_int(ws_optarg, "epan reset count");
|
|
epan_auto_reset = TRUE;
|
|
break;
|
|
case 'a': /* autostop criteria */
|
|
case 'b': /* Ringbuffer option */
|
|
case 'f': /* capture filter */
|
|
case 'g': /* enable group read access on file(s) */
|
|
case 'i': /* Use interface x */
|
|
case LONGOPT_SET_TSTAMP_TYPE: /* Set capture timestamp type */
|
|
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 'y': /* Set the pcap data link type */
|
|
#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
|
|
case 'B': /* Buffer size */
|
|
#endif
|
|
case LONGOPT_COMPRESS_TYPE: /* compress type */
|
|
case LONGOPT_CAPTURE_TMPDIR: /* capture temp directory */
|
|
case LONGOPT_UPDATE_INTERVAL: /* sync pipe update interval */
|
|
/* These are options only for packet capture. */
|
|
#ifdef HAVE_LIBPCAP
|
|
exit_status = capture_opts_add_opt(&global_capture_opts, opt, ws_optarg);
|
|
if (exit_status != 0) {
|
|
goto clean_exit;
|
|
}
|
|
#else
|
|
capture_option_specified = TRUE;
|
|
arg_error = TRUE;
|
|
#endif
|
|
break;
|
|
case 'c': /* Stop after x packets */
|
|
#ifdef HAVE_LIBPCAP
|
|
exit_status = capture_opts_add_opt(&global_capture_opts, opt, ws_optarg);
|
|
if (exit_status != 0) {
|
|
goto clean_exit;
|
|
}
|
|
#else
|
|
max_packet_count = get_positive_int(ws_optarg, "packet count");
|
|
#endif
|
|
break;
|
|
case 'w': /* Write to file x */
|
|
output_file_name = g_strdup(ws_optarg);
|
|
#ifdef HAVE_LIBPCAP
|
|
exit_status = capture_opts_add_opt(&global_capture_opts, opt, ws_optarg);
|
|
if (exit_status != 0) {
|
|
goto clean_exit;
|
|
}
|
|
#endif
|
|
break;
|
|
case 'C':
|
|
/* already processed; just ignore it now */
|
|
break;
|
|
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);
|
|
}
|
|
exit_status = WS_EXIT_INVALID_INTERFACE;
|
|
goto clean_exit;
|
|
}
|
|
capture_opts_print_interfaces(if_list);
|
|
free_interface_list(if_list);
|
|
exit_status = EXIT_SUCCESS;
|
|
goto clean_exit;
|
|
#else
|
|
capture_option_specified = TRUE;
|
|
arg_error = TRUE;
|
|
#endif
|
|
break;
|
|
case 'e':
|
|
/* Field entry */
|
|
{
|
|
header_field_info *hfi = proto_registrar_get_byalias(ws_optarg);
|
|
if (hfi)
|
|
output_fields_add(output_fields, hfi->abbrev);
|
|
else
|
|
output_fields_add(output_fields, ws_optarg);
|
|
}
|
|
break;
|
|
case 'E':
|
|
/* Field option */
|
|
if (!output_fields_set_option(output_fields, ws_optarg)) {
|
|
cmdarg_err("\"%s\" is not a valid field output option=value pair.", ws_optarg);
|
|
output_fields_list_options(stderr);
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
break;
|
|
case 'F':
|
|
out_file_type = wtap_name_to_file_type_subtype(ws_optarg);
|
|
if (out_file_type < 0) {
|
|
cmdarg_err("\"%s\" isn't a valid capture file type", ws_optarg);
|
|
list_capture_types();
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
break;
|
|
case 'G':
|
|
cmdarg_err("-G only valid as first option");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
break;
|
|
case 'j':
|
|
if (!protocolfilter_add_opt(ws_optarg, PF_NONE)) {
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
break;
|
|
case 'J':
|
|
if (!protocolfilter_add_opt(ws_optarg, PF_INCLUDE_CHILDREN)) {
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
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(ws_optarg, 'n')) {
|
|
out_file_name_res = TRUE;
|
|
} else {
|
|
cmdarg_err("Invalid -W argument \"%s\"; it must be one of:", ws_optarg);
|
|
cmdarg_err_cont("\t'n' write network address resolution information (pcapng only)");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
break;
|
|
case 'H': /* Read address to name mappings from a hosts file */
|
|
if (! add_hosts_file(ws_optarg))
|
|
{
|
|
cmdarg_err("Can't read host entries from \"%s\"", ws_optarg);
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
out_file_name_res = TRUE;
|
|
break;
|
|
|
|
case 'h': /* Print help and exit */
|
|
show_help_header("Dump and analyze network traffic.");
|
|
print_usage(stdout);
|
|
exit_status = EXIT_SUCCESS;
|
|
goto clean_exit;
|
|
break;
|
|
case 'l': /* "Line-buffer" standard output */
|
|
/* The ANSI C standard does not appear to *require* that a line-buffered
|
|
stream be flushed to the host environment whenever a newline is
|
|
written, it just says that, on such a stream, characters "are
|
|
intended to be transmitted to or from the host environment as a
|
|
block when a new-line character is encountered".
|
|
|
|
The Visual C++ 6.0 C implementation doesn't do what is intended;
|
|
even if you set a stream to be line-buffered, it still doesn't
|
|
flush the buffer at the end of every line.
|
|
|
|
The whole reason for the "-l" flag in either tcpdump or TShark
|
|
is to allow the output of a live capture to be piped to a program
|
|
or script and to have that script see the information for the
|
|
packet as soon as it's printed, rather than having to wait until
|
|
a standard I/O buffer fills up.
|
|
|
|
So, if the "-l" flag is specified, we flush the standard output
|
|
at the end of a packet. This will do the right thing if we're
|
|
printing packet summary lines, and, as we print the entire protocol
|
|
tree for a single packet without waiting for anything to happen,
|
|
it should be as good as line-buffered mode if we're printing
|
|
protocol trees - arguably even better, as it may do fewer
|
|
writes. */
|
|
line_buffered = TRUE;
|
|
break;
|
|
case 'L': /* Print list of link-layer types and exit */
|
|
#ifdef HAVE_LIBPCAP
|
|
caps_queries |= CAPS_QUERY_LINK_TYPES;
|
|
#else
|
|
capture_option_specified = TRUE;
|
|
arg_error = TRUE;
|
|
#endif
|
|
break;
|
|
case LONGOPT_LIST_TSTAMP_TYPES: /* List possible timestamp types */
|
|
#ifdef HAVE_LIBPCAP
|
|
caps_queries |= CAPS_QUERY_TIMESTAMP_TYPES;
|
|
#else
|
|
capture_option_specified = TRUE;
|
|
arg_error = TRUE;
|
|
#endif
|
|
break;
|
|
case 'o': /* Override preference from command line */
|
|
{
|
|
char *errmsg = NULL;
|
|
|
|
switch (prefs_set_pref(ws_optarg, &errmsg)) {
|
|
|
|
case PREFS_SET_OK:
|
|
break;
|
|
|
|
case PREFS_SET_SYNTAX_ERR:
|
|
cmdarg_err("Invalid -o flag \"%s\"%s%s", ws_optarg,
|
|
errmsg ? ": " : "", errmsg ? errmsg : "");
|
|
g_free(errmsg);
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
break;
|
|
|
|
case PREFS_SET_NO_SUCH_PREF:
|
|
cmdarg_err("-o flag \"%s\" specifies unknown preference", ws_optarg);
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
break;
|
|
|
|
case PREFS_SET_OBSOLETE:
|
|
cmdarg_err("-o flag \"%s\" specifies obsolete preference", ws_optarg);
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
case 'q': /* Quiet */
|
|
quiet = TRUE;
|
|
break;
|
|
case 'Q': /* Really quiet */
|
|
quiet = TRUE;
|
|
really_quiet = TRUE;
|
|
break;
|
|
case 'r':
|
|
/* already processed; just ignore it now */
|
|
break;
|
|
case 'R': /* Read file filter */
|
|
rfilter = ws_optarg;
|
|
break;
|
|
case 'P':
|
|
/* already processed; just ignore it now */
|
|
break;
|
|
case 'S': /* Set the line Separator to be printed between packets */
|
|
separator = ws_optarg;
|
|
break;
|
|
case 'T': /* printing Type */
|
|
/* output_action has been already set. It means multiple -T. */
|
|
if (output_action > WRITE_NONE) {
|
|
cmdarg_err("Multiple -T parameters are unsupported");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
print_packet_info = TRUE;
|
|
if (strcmp(ws_optarg, "text") == 0) {
|
|
output_action = WRITE_TEXT;
|
|
print_format = PR_FMT_TEXT;
|
|
} else if (strcmp(ws_optarg, "tabs") == 0) {
|
|
output_action = WRITE_TEXT;
|
|
print_format = PR_FMT_TEXT;
|
|
delimiter_char = "\t";
|
|
} else if (strcmp(ws_optarg, "ps") == 0) {
|
|
output_action = WRITE_TEXT;
|
|
print_format = PR_FMT_PS;
|
|
} else if (strcmp(ws_optarg, "pdml") == 0) {
|
|
output_action = WRITE_XML;
|
|
print_details = TRUE; /* Need details */
|
|
print_summary = FALSE; /* Don't allow summary */
|
|
} else if (strcmp(ws_optarg, "psml") == 0) {
|
|
output_action = WRITE_XML;
|
|
print_details = FALSE; /* Don't allow details */
|
|
print_summary = TRUE; /* Need summary */
|
|
} else if (strcmp(ws_optarg, "fields") == 0) {
|
|
output_action = WRITE_FIELDS;
|
|
print_details = TRUE; /* Need full tree info */
|
|
print_summary = FALSE; /* Don't allow summary */
|
|
} else if (strcmp(ws_optarg, "json") == 0) {
|
|
output_action = WRITE_JSON;
|
|
print_details = TRUE; /* Need details */
|
|
print_summary = FALSE; /* Don't allow summary */
|
|
} else if (strcmp(ws_optarg, "ek") == 0) {
|
|
output_action = WRITE_EK;
|
|
if (!print_summary)
|
|
print_details = TRUE;
|
|
} else if (strcmp(ws_optarg, "jsonraw") == 0) {
|
|
output_action = WRITE_JSON_RAW;
|
|
print_details = TRUE; /* Need details */
|
|
print_summary = FALSE; /* Don't allow summary */
|
|
}
|
|
else {
|
|
cmdarg_err("Invalid -T parameter \"%s\"; it must be one of:", ws_optarg); /* x */
|
|
cmdarg_err_cont("\t\"fields\" The values of fields specified with the -e option, in a form\n"
|
|
"\t specified by the -E option.\n"
|
|
"\t\"pdml\" Packet Details Markup Language, an XML-based format for the\n"
|
|
"\t details of a decoded packet. This information is equivalent to\n"
|
|
"\t the packet details printed with the -V flag.\n"
|
|
"\t\"ps\" PostScript for a human-readable one-line summary of each of\n"
|
|
"\t the packets, or a multi-line view of the details of each of\n"
|
|
"\t the packets, depending on whether the -V flag was specified.\n"
|
|
"\t\"psml\" Packet Summary Markup Language, an XML-based format for the\n"
|
|
"\t summary information of a decoded packet. This information is\n"
|
|
"\t equivalent to the information shown in the one-line summary\n"
|
|
"\t printed by default.\n"
|
|
"\t\"json\" Packet Summary, an JSON-based format for the details\n"
|
|
"\t summary information of a decoded packet. This information is \n"
|
|
"\t equivalent to the packet details printed with the -V flag.\n"
|
|
"\t\"jsonraw\" Packet Details, a JSON-based format for machine parsing\n"
|
|
"\t including only raw hex decoded fields (same as -T json -x but\n"
|
|
"\t without text decoding, only raw fields included). \n"
|
|
"\t\"ek\" Packet Details, an EK JSON-based format for the bulk insert \n"
|
|
"\t into elastic search cluster. This information is \n"
|
|
"\t equivalent to the packet details printed with the -V flag.\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.\n"
|
|
"\t\"tabs\" Similar to the text report except that each column of the\n"
|
|
"\t human-readable one-line summary is delimited with an ASCII\n"
|
|
"\t horizontal tab character.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
break;
|
|
case 'U': /* Export PDUs to file */
|
|
if (strcmp(ws_optarg, "") == 0 || strcmp(ws_optarg, "?") == 0) {
|
|
list_export_pdu_taps();
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
pdu_export_arg = g_strdup(ws_optarg);
|
|
break;
|
|
case 'v': /* Show version and exit */
|
|
show_version();
|
|
/* 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();
|
|
extcap_cleanup();
|
|
exit_status = EXIT_SUCCESS;
|
|
goto clean_exit;
|
|
case 'O': /* Only output these protocols */
|
|
/* already processed; just ignore it now */
|
|
break;
|
|
case 'V': /* Verbose */
|
|
/* already processed; just ignore it now */
|
|
break;
|
|
case 'x': /* Print packet data in hex (and ASCII) */
|
|
/* already processed; just ignore it now */
|
|
break;
|
|
case 'X':
|
|
/* already processed; just ignore it now */
|
|
break;
|
|
case 'Y':
|
|
dfilter = g_strdup(ws_optarg);
|
|
break;
|
|
case 'z':
|
|
/* We won't call the init function for the stat this soon
|
|
as it would disallow MATE's fields (which are registered
|
|
by the preferences set callback) from being used as
|
|
part of a tap filter. Instead, we just add the argument
|
|
to a list of stat arguments. */
|
|
if (strcmp("help", ws_optarg) == 0) {
|
|
fprintf(stderr, "tshark: The available statistics for the \"-z\" option are:\n");
|
|
list_stat_cmd_args();
|
|
exit_status = EXIT_SUCCESS;
|
|
goto clean_exit;
|
|
}
|
|
if (!process_stat_cmd_arg(ws_optarg)) {
|
|
cmdarg_err("Invalid -z argument \"%s\"; it must be one of:", ws_optarg);
|
|
list_stat_cmd_args();
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
break;
|
|
case 'd': /* Decode as rule */
|
|
case 'K': /* Kerberos keytab file */
|
|
case 'n': /* No name resolution */
|
|
case 'N': /* Select what types of addresses/port #s to resolve */
|
|
case 't': /* Time stamp type */
|
|
case 'u': /* Seconds type */
|
|
case LONGOPT_DISABLE_PROTOCOL: /* disable dissection of protocol */
|
|
case LONGOPT_ENABLE_HEURISTIC: /* enable heuristic dissection of protocol */
|
|
case LONGOPT_DISABLE_HEURISTIC: /* disable heuristic dissection of protocol */
|
|
case LONGOPT_ENABLE_PROTOCOL: /* enable dissection of protocol (that is disabled by default) */
|
|
case LONGOPT_ONLY_PROTOCOLS: /* enable dissection of only this comma separated list of protocols */
|
|
case LONGOPT_DISABLE_ALL_PROTOCOLS: /* enable dissection of protocol (that is disabled by default) */
|
|
if (!dissect_opts_handle_opt(opt, ws_optarg)) {
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
break;
|
|
case LONGOPT_EXPORT_OBJECTS: /* --export-objects */
|
|
if (strcmp("help", ws_optarg) == 0) {
|
|
fprintf(stderr, "tshark: The available export object types for the \"--export-objects\" option are:\n");
|
|
eo_list_object_types();
|
|
exit_status = EXIT_SUCCESS;
|
|
goto clean_exit;
|
|
}
|
|
if (!eo_tap_opt_add(ws_optarg)) {
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
break;
|
|
case LONGOPT_EXPORT_TLS_SESSION_KEYS: /* --export-tls-session-keys */
|
|
tls_session_keys_file = ws_optarg;
|
|
break;
|
|
case LONGOPT_COLOR: /* print in color where appropriate */
|
|
dissect_color = TRUE;
|
|
break;
|
|
case LONGOPT_NO_DUPLICATE_KEYS:
|
|
no_duplicate_keys = TRUE;
|
|
node_children_grouper = proto_node_group_children_by_json_key;
|
|
break;
|
|
case LONGOPT_CAPTURE_COMMENT: /* capture comment */
|
|
if (capture_comments == NULL) {
|
|
capture_comments = g_ptr_array_new_with_free_func(g_free);
|
|
}
|
|
g_ptr_array_add(capture_comments, g_strdup(ws_optarg));
|
|
break;
|
|
case LONGOPT_HEXDUMP:
|
|
print_hex = TRUE;
|
|
print_packet_info = TRUE;
|
|
if (strcmp(ws_optarg, "all") == 0)
|
|
hexdump_source_option = HEXDUMP_SOURCE_MULTI;
|
|
else if (strcmp(ws_optarg, "frames") == 0)
|
|
hexdump_source_option = HEXDUMP_SOURCE_PRIMARY;
|
|
else if (strcmp(ws_optarg, "ascii") == 0)
|
|
hexdump_ascii_option = HEXDUMP_ASCII_INCLUDE;
|
|
else if (strcmp(ws_optarg, "delimit") == 0)
|
|
hexdump_ascii_option = HEXDUMP_ASCII_DELIMIT;
|
|
else if (strcmp(ws_optarg, "noascii") == 0)
|
|
hexdump_ascii_option = HEXDUMP_ASCII_EXCLUDE;
|
|
else if (strcmp("help", ws_optarg) == 0) {
|
|
hexdump_option_help(stdout);
|
|
exit_status = EXIT_SUCCESS;
|
|
goto clean_exit;
|
|
} else {
|
|
fprintf(stderr, "tshark: \"%s\" is an invalid value for --hexdump <hexoption>\n", ws_optarg);
|
|
fprintf(stderr, "For valid <hexoption> values enter: tshark --hexdump help\n");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
break;
|
|
case LONGOPT_SELECTED_FRAME:
|
|
/* Hidden option to mark a frame as "selected". Used for testing and debugging.
|
|
* Only active in two-pass mode. */
|
|
if (!ws_strtou32(ws_optarg, &endptr, &selected_frame_number) || *endptr != '\0') {
|
|
fprintf(stderr, "tshark: \"%s\" is not a valid frame number\n", ws_optarg);
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
break;
|
|
default:
|
|
case '?': /* Bad flag - print usage message */
|
|
switch(ws_optopt) {
|
|
case 'F':
|
|
list_capture_types();
|
|
break;
|
|
default:
|
|
print_usage(stderr);
|
|
}
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* set the default output action to TEXT */
|
|
if (output_action == WRITE_NONE)
|
|
output_action = WRITE_TEXT;
|
|
|
|
/* set the default file type to pcapng */
|
|
if (out_file_type == WTAP_FILE_TYPE_SUBTYPE_UNKNOWN)
|
|
out_file_type = wtap_pcapng_file_type_subtype();
|
|
|
|
/*
|
|
* Print packet summary information is the default if neither -V or -x
|
|
* were specified. Note that this is new behavior, which allows for the
|
|
* possibility of printing only hex/ascii output without necessarily
|
|
* requiring that either the summary or details be printed too.
|
|
*/
|
|
if (!print_summary && !print_details && !print_hex)
|
|
print_summary = TRUE;
|
|
|
|
if (no_duplicate_keys && output_action != WRITE_JSON && output_action != WRITE_JSON_RAW) {
|
|
cmdarg_err("--no-duplicate-keys can only be used with \"-T json\" and \"-T jsonraw\"");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
|
|
/* If we specified output fields, but not the output field type... */
|
|
if ((WRITE_FIELDS != output_action && WRITE_XML != output_action && WRITE_JSON != output_action && WRITE_EK != output_action) && 0 != output_fields_num_fields(output_fields)) {
|
|
cmdarg_err("Output fields were specified with \"-e\", "
|
|
"but \"-Tek, -Tfields, -Tjson or -Tpdml\" was not specified.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
} else if (WRITE_FIELDS == output_action && 0 == output_fields_num_fields(output_fields)) {
|
|
cmdarg_err("\"-Tfields\" was specified, but no fields were "
|
|
"specified with \"-e\".");
|
|
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
|
|
if (dissect_color) {
|
|
if (!color_filters_init(&err_msg, NULL)) {
|
|
fprintf(stderr, "%s\n", err_msg);
|
|
g_free(err_msg);
|
|
}
|
|
}
|
|
|
|
/* 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 (ws_optind < argc) {
|
|
if (cf_name != NULL) {
|
|
if (dfilter != NULL) {
|
|
cmdarg_err("Display filters were specified both with \"-Y\" "
|
|
"and with additional command-line arguments.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
dfilter = get_args_as_string(argc, argv, ws_optind);
|
|
} 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.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
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, ws_optind);
|
|
} else {
|
|
cmdarg_err("A capture filter was specified both with \"-f\""
|
|
" and with additional command-line arguments.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
}
|
|
global_capture_opts.default_options.cfilter = get_args_as_string(argc, argv, ws_optind);
|
|
#else
|
|
capture_option_specified = TRUE;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
if (!output_file_name) {
|
|
/* 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 {
|
|
const char *save_file = output_file_name;
|
|
/* 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(save_file, "-") == 0 && print_packet_info) {
|
|
cmdarg_err("You can't write both raw packet data and dissected packets"
|
|
" to the standard output.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
}
|
|
|
|
#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);
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
|
|
if (print_hex) {
|
|
if (output_action != WRITE_TEXT && output_action != WRITE_JSON && output_action != WRITE_JSON_RAW && output_action != WRITE_EK) {
|
|
cmdarg_err("Raw packet hex data can only be printed as text, PostScript, JSON, JSONRAW or EK JSON");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
}
|
|
|
|
if (output_only != NULL) {
|
|
char *ps;
|
|
|
|
if (!print_details) {
|
|
cmdarg_err("-O requires -V");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
|
|
output_only_tables = g_hash_table_new (g_str_hash, g_str_equal);
|
|
for (ps = strtok (output_only, ","); ps; ps = strtok (NULL, ",")) {
|
|
const char *name = ps;
|
|
header_field_info *hfi = proto_registrar_get_byalias(name);
|
|
if (hfi) {
|
|
name = hfi->abbrev;
|
|
}
|
|
g_hash_table_insert(output_only_tables, (gpointer)name, (gpointer)name);
|
|
}
|
|
}
|
|
|
|
if (rfilter != NULL && !perform_two_pass_analysis) {
|
|
cmdarg_err("-R without -2 is deprecated. For single-pass filtering use -Y.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
|
|
#ifdef HAVE_LIBPCAP
|
|
if (caps_queries) {
|
|
/* We're supposed to list the link-layer/timestamp 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 %s and a capture file to be read.",
|
|
caps_queries & CAPS_QUERY_LINK_TYPES ? "-L" : "--list-time-stamp-types");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
/* 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.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
} 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.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
if (global_capture_opts.multi_files_on) {
|
|
cmdarg_err("Multiple capture files requested, but "
|
|
"a capture isn't being done.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
if (global_capture_opts.has_file_duration) {
|
|
cmdarg_err("Switching capture files after a time period was specified, but "
|
|
"a capture isn't being done.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
if (global_capture_opts.has_file_interval) {
|
|
cmdarg_err("Switching capture files after a time interval was specified, but "
|
|
"a capture isn't being done.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
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.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
if (global_capture_opts.has_autostop_files) {
|
|
cmdarg_err("A maximum number of capture files was specified, but "
|
|
"a capture isn't being done.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
|
|
/* 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.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
} else {
|
|
/*
|
|
* "-r" wasn't specified, so we're doing a live capture.
|
|
*/
|
|
gboolean use_pcapng = TRUE;
|
|
|
|
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.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
|
|
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 pcapng format. */
|
|
if (out_file_type == wtap_pcapng_file_type_subtype()) {
|
|
use_pcapng = TRUE;
|
|
} else if (out_file_type == wtap_pcap_file_type_subtype()) {
|
|
use_pcapng = FALSE;
|
|
} else {
|
|
cmdarg_err("Live captures can only be saved in pcap or pcapng format.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
if (capture_comments != NULL && !use_pcapng) {
|
|
cmdarg_err("Capture comments can only be written to a pcapng file.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
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.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
if (global_capture_opts.output_to_pipe) {
|
|
cmdarg_err("Multiple capture files requested, but "
|
|
"the capture file is a pipe.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
if (!global_capture_opts.has_autostop_filesize &&
|
|
!global_capture_opts.has_file_duration &&
|
|
!global_capture_opts.has_file_interval &&
|
|
!global_capture_opts.has_file_packets) {
|
|
cmdarg_err("Multiple capture files requested, but "
|
|
"no maximum capture file size, duration, interval or packets were specified.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
}
|
|
/* 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.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
if (dfilter != NULL) {
|
|
cmdarg_err("Display filters aren't supported when capturing and saving the captured packets.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
global_capture_opts.use_pcapng = use_pcapng;
|
|
} 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.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
if (global_capture_opts.multi_files_on) {
|
|
cmdarg_err("Multiple capture files requested, but "
|
|
"the capture isn't being saved to a file.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
if (capture_comments != NULL) {
|
|
cmdarg_err("Capture comments were specified, but "
|
|
"the capture isn't being saved to a file.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* If capture comments were specified, -w also has to have been specified.
|
|
*/
|
|
if (capture_comments != NULL) {
|
|
if (output_file_name) {
|
|
/* They specified a "-w" flag, so we'll be saving to a capture file.
|
|
* This is fine if they're writing in a format that supports
|
|
* section block comments.
|
|
*/
|
|
if (wtap_file_type_subtype_supports_option(out_file_type,
|
|
WTAP_BLOCK_SECTION,
|
|
OPT_COMMENT) == OPTION_NOT_SUPPORTED) {
|
|
GArray *writable_type_subtypes;
|
|
|
|
cmdarg_err("Capture comments can only be written to files of the following types:");
|
|
writable_type_subtypes = wtap_get_writable_file_types_subtypes(FT_SORT_BY_NAME);
|
|
for (guint i = 0; i < writable_type_subtypes->len; i++) {
|
|
int ft = g_array_index(writable_type_subtypes, int, i);
|
|
|
|
if (wtap_file_type_subtype_supports_option(ft, WTAP_BLOCK_SECTION,
|
|
OPT_COMMENT) != OPTION_NOT_SUPPORTED)
|
|
cmdarg_err_cont(" %s - %s", wtap_file_type_subtype_name(ft),
|
|
wtap_file_type_subtype_description(ft));
|
|
}
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
}
|
|
else {
|
|
cmdarg_err("Capture comments were specified, but you aren't writing a capture file.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
}
|
|
|
|
err_msg = ws_init_sockets();
|
|
if (err_msg != NULL)
|
|
{
|
|
cmdarg_err("%s", err_msg);
|
|
g_free(err_msg);
|
|
cmdarg_err_cont("%s", please_report_bug());
|
|
exit_status = WS_EXIT_INIT_FAILED;
|
|
goto clean_exit;
|
|
}
|
|
|
|
/* Notify all registered modules that have had any of their preferences
|
|
changed either from one of the preferences file or from the command
|
|
line that their preferences have changed. */
|
|
prefs_apply_all();
|
|
|
|
/* We can also enable specified taps for export object */
|
|
start_exportobjects();
|
|
|
|
/* 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);
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
}
|
|
|
|
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();
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
}
|
|
|
|
timestamp_set_type(global_dissect_options.time_format);
|
|
timestamp_set_precision(global_dissect_options.time_precision);
|
|
|
|
/*
|
|
* Enabled and disabled protocols and heuristic dissectors as per
|
|
* command-line options.
|
|
*/
|
|
if (!setup_enabled_and_disabled_protocols()) {
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
|
|
/* Build the column format array */
|
|
build_column_format_array(&cfile.cinfo, prefs_p->num_cols, TRUE);
|
|
|
|
#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) {
|
|
ws_debug("Compiling read filter: '%s'", rfilter);
|
|
if (!compile_dfilter(rfilter, &rfcode)) {
|
|
epan_cleanup();
|
|
extcap_cleanup();
|
|
|
|
#ifdef HAVE_LIBPCAP
|
|
warn_about_capture_filter(rfilter);
|
|
#endif
|
|
|
|
exit_status = WS_EXIT_INVALID_INTERFACE;
|
|
goto clean_exit;
|
|
}
|
|
}
|
|
cfile.rfcode = rfcode;
|
|
|
|
if (dfilter != NULL) {
|
|
ws_debug("Compiling display filter: '%s'", dfilter);
|
|
if (!compile_dfilter(dfilter, &dfcode)) {
|
|
epan_cleanup();
|
|
extcap_cleanup();
|
|
|
|
#ifdef HAVE_LIBPCAP
|
|
warn_about_capture_filter(dfilter);
|
|
#endif
|
|
|
|
exit_status = WS_EXIT_INVALID_FILTER;
|
|
goto clean_exit;
|
|
}
|
|
}
|
|
cfile.dfcode = dfcode;
|
|
|
|
if (print_packet_info) {
|
|
/* If we're printing as text or PostScript, we have
|
|
to create a print stream. */
|
|
if (output_action == WRITE_TEXT) {
|
|
switch (print_format) {
|
|
|
|
case PR_FMT_TEXT:
|
|
print_stream = print_stream_text_stdio_new(stdout);
|
|
break;
|
|
|
|
case PR_FMT_PS:
|
|
print_stream = print_stream_ps_stdio_new(stdout);
|
|
break;
|
|
|
|
default:
|
|
ws_assert_not_reached();
|
|
}
|
|
}
|
|
}
|
|
|
|
/* PDU export requested. Take the ownership of the '-w' file, apply tap
|
|
* filters and start tapping. */
|
|
if (pdu_export_arg) {
|
|
const char *exp_pdu_tap_name = pdu_export_arg;
|
|
const char *exp_pdu_filter = dfilter; /* may be NULL to disable filter */
|
|
char *exp_pdu_error;
|
|
int exp_fd;
|
|
char *comment;
|
|
|
|
if (!cf_name) {
|
|
cmdarg_err("PDUs export requires a capture file (specify with -r).");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
/* Take ownership of the '-w' output file. */
|
|
exp_pdu_filename = output_file_name;
|
|
output_file_name = NULL;
|
|
#ifdef HAVE_LIBPCAP
|
|
global_capture_opts.save_file = NULL;
|
|
#endif
|
|
if (exp_pdu_filename == NULL) {
|
|
cmdarg_err("PDUs export requires an output file (-w).");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
|
|
exp_pdu_error = exp_pdu_pre_open(exp_pdu_tap_name, exp_pdu_filter,
|
|
&exp_pdu_tap_data);
|
|
if (exp_pdu_error) {
|
|
cmdarg_err("Cannot register tap: %s", exp_pdu_error);
|
|
g_free(exp_pdu_error);
|
|
list_export_pdu_taps();
|
|
exit_status = INVALID_TAP;
|
|
goto clean_exit;
|
|
}
|
|
|
|
if (strcmp(exp_pdu_filename, "-") == 0) {
|
|
/* Write to the standard output. */
|
|
exp_fd = 1;
|
|
} else {
|
|
exp_fd = ws_open(exp_pdu_filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0644);
|
|
if (exp_fd == -1) {
|
|
cmdarg_err("%s: %s", exp_pdu_filename, file_open_error_message(errno, TRUE));
|
|
exit_status = WS_EXIT_INVALID_FILE;
|
|
goto clean_exit;
|
|
}
|
|
}
|
|
|
|
/* Activate the export PDU tap */
|
|
/* Write to our output file with this comment (if the type supports it,
|
|
* otherwise exp_pdu_open() will ignore the comment) */
|
|
comment = ws_strdup_printf("Dump of PDUs from %s", cf_name);
|
|
exp_pdu_status = exp_pdu_open(&exp_pdu_tap_data, exp_pdu_filename,
|
|
out_file_type, exp_fd, comment,
|
|
&err, &err_info);
|
|
g_free(comment);
|
|
if (!exp_pdu_status) {
|
|
cfile_dump_open_failure_message(exp_pdu_filename, err, err_info,
|
|
out_file_type);
|
|
exit_status = INVALID_EXPORT;
|
|
goto clean_exit;
|
|
}
|
|
}
|
|
|
|
if (cf_name) {
|
|
ws_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();
|
|
extcap_cleanup();
|
|
exit_status = WS_EXIT_INVALID_FILE;
|
|
goto clean_exit;
|
|
}
|
|
|
|
/* Start statistics taps; we do so after successfully opening the
|
|
capture file, so we know we have something to compute stats
|
|
on, and after registering all dissectors, so that MATE will
|
|
have registered its field array so we can have a tap filter
|
|
with one of MATE's late-registered fields as part of the
|
|
filter. */
|
|
start_requested_stats();
|
|
|
|
/* Do we need to do dissection of packets? That depends on, among
|
|
other things, what taps are listening, so determine that after
|
|
starting the statistics taps. */
|
|
do_dissection = must_do_dissection(rfcode, dfcode, pdu_export_arg);
|
|
ws_debug("tshark: do_dissection = %s", do_dissection ? "TRUE" : "FALSE");
|
|
|
|
/* Process the packets in the file */
|
|
ws_debug("tshark: invoking process_cap_file() to process the packets");
|
|
TRY {
|
|
status = process_cap_file(&cfile, output_file_name, out_file_type, out_file_name_res,
|
|
#ifdef HAVE_LIBPCAP
|
|
global_capture_opts.has_autostop_packets ? global_capture_opts.autostop_packets : 0,
|
|
global_capture_opts.has_autostop_filesize ? global_capture_opts.autostop_filesize : 0,
|
|
global_capture_opts.has_autostop_written_packets ? global_capture_opts.autostop_written_packets : 0);
|
|
#else
|
|
max_packet_count,
|
|
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"
|
|
WS_WIKI_URL("KnownBugs/OutOfMemory") "\n");
|
|
status = PROCESS_FILE_ERROR;
|
|
}
|
|
ENDTRY;
|
|
|
|
switch (status) {
|
|
|
|
case PROCESS_FILE_SUCCEEDED:
|
|
/* Everything worked OK; draw the taps. */
|
|
draw_taps = TRUE;
|
|
break;
|
|
|
|
case PROCESS_FILE_NO_FILE_PROCESSED:
|
|
/* We never got to try to read the file, so there are no tap
|
|
results to dump. Exit with an error status. */
|
|
exit_status = 2;
|
|
break;
|
|
|
|
case PROCESS_FILE_ERROR:
|
|
/* We still dump out the results of taps, etc., as we might have
|
|
read some packets; however, we exit with an error status. */
|
|
draw_taps = TRUE;
|
|
exit_status = 2;
|
|
break;
|
|
|
|
case PROCESS_FILE_INTERRUPTED:
|
|
/* The user interrupted the read process; Don't dump out the
|
|
result of taps, etc., and exit with an error status. */
|
|
exit_status = 2;
|
|
break;
|
|
}
|
|
|
|
if (pdu_export_arg) {
|
|
if (!exp_pdu_close(&exp_pdu_tap_data, &err, &err_info)) {
|
|
cfile_close_failure_message(exp_pdu_filename, err, err_info);
|
|
exit_status = 2;
|
|
}
|
|
g_free(pdu_export_arg);
|
|
g_free(exp_pdu_filename);
|
|
}
|
|
} else {
|
|
ws_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
|
|
#ifdef _WIN32
|
|
/* Warn the user if npf.sys isn't loaded. */
|
|
if (!npf_sys_is_running()) {
|
|
fprintf(stderr, "The NPF driver isn't running. You may have trouble "
|
|
"capturing or\nlisting interfaces.\n");
|
|
}
|
|
#endif /* _WIN32 */
|
|
|
|
/* 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) {
|
|
goto clean_exit;
|
|
}
|
|
|
|
/*
|
|
* If requested, list the link layer types and/or time stamp types
|
|
* and exit.
|
|
*/
|
|
if (caps_queries) {
|
|
guint i;
|
|
|
|
/* Get the list of link-layer types for the capture devices. */
|
|
exit_status = EXIT_SUCCESS;
|
|
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 = ws_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, &err_str_secondary, NULL);
|
|
g_free(auth_str);
|
|
if (caps == NULL) {
|
|
cmdarg_err("%s%s%s", err_str, err_str_secondary ? "\n" : "", err_str_secondary ? err_str_secondary : "");
|
|
g_free(err_str);
|
|
g_free(err_str_secondary);
|
|
exit_status = WS_EXIT_INVALID_CAPABILITY;
|
|
break;
|
|
}
|
|
exit_status = capture_opts_print_if_capabilities(caps, interface_opts,
|
|
caps_queries);
|
|
free_if_capabilities(caps);
|
|
if (exit_status != EXIT_SUCCESS) {
|
|
break;
|
|
}
|
|
}
|
|
goto clean_exit;
|
|
}
|
|
|
|
/*
|
|
* 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 (!ws_isatty(ws_fileno(stderr)))
|
|
print_packet_counts = FALSE;
|
|
else if (print_packet_info && ws_isatty(ws_fileno(stdout)))
|
|
print_packet_counts = FALSE;
|
|
else if (quiet)
|
|
print_packet_counts = FALSE;
|
|
else
|
|
print_packet_counts = TRUE;
|
|
|
|
ws_debug("tshark: performing live capture");
|
|
|
|
/* Start statistics taps; we should only do so after the capture
|
|
started successfully, so we know we have something to compute
|
|
stats, but we currently don't check for that - see below.
|
|
|
|
We do so after registering all dissectors, so that MATE will
|
|
have registered its field array so we can have a tap filter
|
|
with one of MATE's late-registered fields as part of the
|
|
filter. */
|
|
start_requested_stats();
|
|
|
|
/* Do we need to do dissection of packets? That depends on, among
|
|
other things, what taps are listening, so determine that after
|
|
starting the statistics taps. */
|
|
do_dissection = must_do_dissection(rfcode, dfcode, pdu_export_arg);
|
|
ws_debug("tshark: do_dissection = %s", do_dissection ? "TRUE" : "FALSE");
|
|
|
|
/* We're doing live capture; if the capture child is writing to a pipe,
|
|
we can't do dissection, because that would mean two readers for
|
|
the pipe, tshark and whatever else. */
|
|
if (do_dissection && global_capture_opts.output_to_pipe) {
|
|
if (tap_listeners_require_dissection()) {
|
|
cmdarg_err("Taps aren't supported when capturing and saving to a pipe.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
if (print_packet_info) {
|
|
cmdarg_err("Printing dissected packets isn't supported when capturing and saving to a pipe.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
/* We already checked the next three reasons for supersets of
|
|
capturing and saving to a pipe, but this doesn't hurt. */
|
|
if (pdu_export_arg) {
|
|
cmdarg_err("PDUs export isn't supported when capturing and saving to a pipe.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
if (rfcode != NULL) {
|
|
cmdarg_err("Read filters aren't supported when capturing and saving to a pipe.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
if (dfcode != NULL) {
|
|
cmdarg_err("Display filters aren't supported when capturing and saving to a pipe.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
/* There's some other reason we're dissecting. */
|
|
cmdarg_err("Dissection isn't supported when capturing and saving to a pipe.");
|
|
exit_status = WS_EXIT_INVALID_OPTION;
|
|
goto clean_exit;
|
|
}
|
|
|
|
/* Write a preamble if we're printing one. Do this after all checking
|
|
* for invalid options, so we don't print just a preamble and quit. */
|
|
if (print_packet_info) {
|
|
if (!write_preamble(&cfile)) {
|
|
show_print_file_io_error();
|
|
exit_status = WS_EXIT_INVALID_FILE;
|
|
goto clean_exit;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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()) {
|
|
show_print_file_io_error();
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If we never got a capture file, don't draw the taps; we not only
|
|
* didn't capture any packets, we never even did any capturing.
|
|
*/
|
|
if (cfile.filename != NULL)
|
|
draw_taps = TRUE;
|
|
#else
|
|
/* No - complain. */
|
|
cmdarg_err("This version of TShark was not built with support for capturing packets.");
|
|
exit_status = INVALID_CAPTURE;
|
|
goto clean_exit;
|
|
#endif
|
|
}
|
|
|
|
if (cfile.provider.frames != NULL) {
|
|
free_frame_data_sequence(cfile.provider.frames);
|
|
cfile.provider.frames = NULL;
|
|
}
|
|
|
|
if (draw_taps)
|
|
draw_tap_listeners(TRUE);
|
|
|
|
if (tls_session_keys_file) {
|
|
gsize keylist_length;
|
|
gchar *keylist = ssl_export_sessions(&keylist_length);
|
|
write_file_binary_mode(tls_session_keys_file, keylist, keylist_length);
|
|
g_free(keylist);
|
|
}
|
|
|
|
/* Memory cleanup */
|
|
reset_tap_listeners();
|
|
funnel_dump_all_text_windows();
|
|
epan_free(cfile.epan);
|
|
epan_cleanup();
|
|
extcap_cleanup();
|
|
|
|
output_fields_free(output_fields);
|
|
output_fields = NULL;
|
|
|
|
clean_exit:
|
|
cf_close(&cfile);
|
|
g_free(cf_name);
|
|
destroy_print_stream(print_stream);
|
|
g_free(output_file_name);
|
|
#ifdef HAVE_LIBPCAP
|
|
capture_opts_cleanup(&global_capture_opts);
|
|
#endif
|
|
col_cleanup(&cfile.cinfo);
|
|
free_filter_lists();
|
|
wtap_cleanup();
|
|
free_progdirs();
|
|
dfilter_free(dfcode);
|
|
g_free(dfilter);
|
|
return exit_status;
|
|
}
|
|
|
|
gboolean loop_running = FALSE;
|
|
guint32 packet_count = 0;
|
|
|
|
static const nstime_t *
|
|
tshark_get_frame_ts(struct packet_provider_data *prov, guint32 frame_num)
|
|
{
|
|
if (prov->ref && prov->ref->num == frame_num)
|
|
return &prov->ref->abs_ts;
|
|
|
|
if (prov->prev_dis && prov->prev_dis->num == frame_num)
|
|
return &prov->prev_dis->abs_ts;
|
|
|
|
if (prov->prev_cap && prov->prev_cap->num == frame_num)
|
|
return &prov->prev_cap->abs_ts;
|
|
|
|
if (prov->frames) {
|
|
frame_data *fd = frame_data_sequence_find(prov->frames, frame_num);
|
|
|
|
return (fd) ? &fd->abs_ts : NULL;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static epan_t *
|
|
tshark_epan_new(capture_file *cf)
|
|
{
|
|
static const struct packet_provider_funcs funcs = {
|
|
tshark_get_frame_ts,
|
|
cap_file_provider_get_interface_name,
|
|
cap_file_provider_get_interface_description,
|
|
NULL,
|
|
};
|
|
|
|
return epan_new(&cf->provider, &funcs);
|
|
}
|
|
|
|
#ifdef HAVE_LIBPCAP
|
|
static gboolean
|
|
capture(void)
|
|
{
|
|
volatile gboolean ret = TRUE;
|
|
guint i;
|
|
GString *str;
|
|
GMainContext *ctx;
|
|
#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);
|
|
g_free(interface_opts->descr);
|
|
interface_opts->descr = get_interface_descriptive_name(interface_opts->name);
|
|
}
|
|
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, capture_comments,
|
|
&global_capture_session, &global_info_data, NULL);
|
|
|
|
if (!ret)
|
|
return FALSE;
|
|
|
|
/*
|
|
* Force synchronous resolution of IP addresses; we're doing only
|
|
* one pass, so we can't do it in the background and fix up past
|
|
* dissections.
|
|
*/
|
|
set_resolution_synchrony(TRUE);
|
|
|
|
/* the actual capture loop */
|
|
ctx = g_main_context_default();
|
|
loop_running = TRUE;
|
|
|
|
TRY
|
|
{
|
|
while (loop_running)
|
|
{
|
|
g_main_context_iteration(ctx, TRUE);
|
|
}
|
|
}
|
|
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"
|
|
WS_WIKI_URL("KnownBugs/OutOfMemory") "\n");
|
|
abort();
|
|
}
|
|
ENDTRY;
|
|
return ret;
|
|
}
|
|
|
|
/* capture child detected an error */
|
|
static void
|
|
capture_input_error(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 */
|
|
static void
|
|
capture_input_cfilter_error(capture_session *cap_session, guint i, const char *error_message)
|
|
{
|
|
capture_options *capture_opts = cap_session->capture_opts;
|
|
dfilter_t *rfcode = NULL;
|
|
interface_options *interface_opts;
|
|
|
|
ws_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 */
|
|
static bool
|
|
capture_input_new_file(capture_session *cap_session, gchar *new_file)
|
|
{
|
|
capture_options *capture_opts = cap_session->capture_opts;
|
|
capture_file *cf = cap_session->cf;
|
|
gboolean is_tempfile;
|
|
int err;
|
|
|
|
if (really_quiet == FALSE) {
|
|
if (cap_session->state == CAPTURE_PREPARING) {
|
|
ws_message("Capture started.");
|
|
}
|
|
ws_message("File: \"%s\"", new_file);
|
|
}
|
|
|
|
ws_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) {
|
|
cf_close(cf);
|
|
}
|
|
|
|
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 */
|
|
cap_session->cf->open_type = WTAP_TYPE_AUTO;
|
|
/* Attempt to open the capture file and set up to read from it. */
|
|
switch(cf_open(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;
|
|
}
|
|
} else if (quiet && is_tempfile) {
|
|
cf->state = FILE_READ_ABORTED;
|
|
cf->filename = g_strdup(new_file);
|
|
cf->is_tempfile = is_tempfile;
|
|
}
|
|
|
|
cap_session->state = CAPTURE_RUNNING;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/* capture child tells us we have new packets to read */
|
|
static 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 = 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;
|
|
wtap_rec rec;
|
|
Buffer buf;
|
|
|
|
/*
|
|
* Determine whether we need to create a protocol tree.
|
|
* We do if:
|
|
*
|
|
* we're going to apply a read filter;
|
|
*
|
|
* we're going to apply a display filter;
|
|
*
|
|
* we're going to print the protocol tree;
|
|
*
|
|
* one of the tap listeners is going to apply a filter;
|
|
*
|
|
* one of the tap listeners requires a protocol tree;
|
|
*
|
|
* a postdissector wants field values or protocols
|
|
* on the first pass;
|
|
*
|
|
* we have custom columns (which require field values, which
|
|
* currently requires that we build a protocol tree).
|
|
*/
|
|
create_proto_tree =
|
|
(cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
|
|
(tap_flags & TL_REQUIRES_PROTO_TREE) || postdissectors_want_hfids() ||
|
|
have_custom_cols(&cf->cinfo) || dissect_color);
|
|
|
|
/* 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);
|
|
|
|
wtap_rec_init(&rec);
|
|
ws_buffer_init(&buf, 1514);
|
|
|
|
while (to_read-- && cf->provider.wth) {
|
|
wtap_cleareof(cf->provider.wth);
|
|
ret = wtap_read(cf->provider.wth, &rec, &buf, &err, &err_info, &data_offset);
|
|
reset_epan_mem(cf, edt, create_proto_tree, print_packet_info && print_details);
|
|
if (ret == FALSE) {
|
|
/* read from file failed, tell the capture child to stop */
|
|
sync_pipe_stop(cap_session);
|
|
wtap_close(cf->provider.wth);
|
|
cf->provider.wth = NULL;
|
|
} else {
|
|
ret = process_packet_single_pass(cf, edt, data_offset, &rec, &buf,
|
|
tap_flags);
|
|
}
|
|
if (ret != FALSE) {
|
|
/* packet successfully read and gone through the "Read Filter" */
|
|
packet_count++;
|
|
}
|
|
wtap_rec_reset(&rec);
|
|
}
|
|
|
|
epan_dissect_free(edt);
|
|
|
|
wtap_rec_cleanup(&rec);
|
|
ws_buffer_free(&buf);
|
|
|
|
} 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? */
|
|
static void
|
|
capture_input_drops(capture_session *cap_session _U_, guint32 dropped, const char* interface_name)
|
|
{
|
|
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. */
|
|
if (interface_name != NULL) {
|
|
fprintf(stderr, "%u packet%s dropped from %s\n", dropped, plurality(dropped, "", "s"), interface_name);
|
|
} else {
|
|
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.
|
|
*/
|
|
static void
|
|
capture_input_closed(capture_session *cap_session _U_, gchar *msg)
|
|
{
|
|
if (msg != NULL)
|
|
fprintf(stderr, "tshark: %s\n", msg);
|
|
|
|
report_counts();
|
|
|
|
loop_running = FALSE;
|
|
}
|
|
|
|
#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, wtap_rec *rec, Buffer *buf)
|
|
{
|
|
frame_data fdlocal;
|
|
guint32 framenum;
|
|
gboolean passed;
|
|
|
|
/* The frame number of this packet is one more than the count of
|
|
frames in this packet. */
|
|
framenum = cf->count + 1;
|
|
|
|
/* If we're not running a display filter and we're not printing any
|
|
packet information, we don't need to do a dissection. This means
|
|
that all packets can be marked as 'passed'. */
|
|
passed = TRUE;
|
|
|
|
frame_data_init(&fdlocal, framenum, rec, offset, cum_bytes);
|
|
|
|
/* If we're going to run a read filter or a display filter, set up to
|
|
do a dissection and do so. (This is the first pass of two passes
|
|
over the packets, so we will not be printing any information
|
|
from the dissection or running taps on the packet; if we're doing
|
|
any of that, we'll do it in the second pass.) */
|
|
if (edt) {
|
|
column_info *cinfo = NULL;
|
|
|
|
/* If we're running a read filter, prime the epan_dissect_t with that
|
|
filter. */
|
|
if (cf->rfcode)
|
|
epan_dissect_prime_with_dfilter(edt, cf->rfcode);
|
|
|
|
if (cf->dfcode)
|
|
epan_dissect_prime_with_dfilter(edt, cf->dfcode);
|
|
|
|
/* This is the first pass, so prime the epan_dissect_t with the
|
|
hfids postdissectors want on the first pass. */
|
|
prime_epan_dissect_with_postdissector_wanted_hfids(edt);
|
|
|
|
frame_data_set_before_dissect(&fdlocal, &cf->elapsed_time,
|
|
&cf->provider.ref, cf->provider.prev_dis);
|
|
if (cf->provider.ref == &fdlocal) {
|
|
ref_frame = fdlocal;
|
|
cf->provider.ref = &ref_frame;
|
|
}
|
|
|
|
/* If we're applying a filter that needs the columns, construct them. */
|
|
if (dfilter_requires_columns(cf->rfcode) || dfilter_requires_columns(cf->dfcode)) {
|
|
cinfo = &cf->cinfo;
|
|
}
|
|
|
|
epan_dissect_run(edt, cf->cd_t, rec,
|
|
frame_tvbuff_new_buffer(&cf->provider, &fdlocal, buf),
|
|
&fdlocal, cinfo);
|
|
|
|
/* Run the read filter if we have one. */
|
|
if (cf->rfcode)
|
|
passed = dfilter_apply_edt(cf->rfcode, edt);
|
|
}
|
|
|
|
if (passed) {
|
|
frame_data_set_after_dissect(&fdlocal, &cum_bytes);
|
|
cf->provider.prev_cap = cf->provider.prev_dis = frame_data_sequence_add(cf->provider.frames, &fdlocal);
|
|
|
|
/* If we're not doing dissection then there won't be any dependent frames.
|
|
* More importantly, edt.pi.fd.dependent_frames won't be initialized because
|
|
* epan hasn't been initialized.
|
|
* if 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) && edt->pi.fd->dependent_frames) {
|
|
g_hash_table_foreach(edt->pi.fd->dependent_frames, find_and_mark_frame_depended_upon, cf->provider.frames);
|
|
}
|
|
|
|
if (selected_frame_number != 0 && selected_frame_number == cf->count + 1) {
|
|
/* If we are doing dissection and we have a "selected frame"
|
|
* then load that frame's references (if any) onto the compiled
|
|
* display filter. Selected frame number is ordinal, count is cardinal. */
|
|
dfilter_load_field_references(cf->dfcode, edt->tree);
|
|
}
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
/*
|
|
* Set if reading a file was interrupted by a CTRL_ event on Windows or
|
|
* a signal on UN*X.
|
|
*/
|
|
static gboolean read_interrupted = FALSE;
|
|
|
|
#ifdef _WIN32
|
|
static BOOL WINAPI
|
|
read_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 read to stop */
|
|
read_interrupted = TRUE;
|
|
|
|
return TRUE;
|
|
}
|
|
#else
|
|
static void
|
|
read_cleanup(int signum _U_)
|
|
{
|
|
/* tell the read to stop */
|
|
read_interrupted = TRUE;
|
|
}
|
|
#endif /* _WIN32 */
|
|
|
|
typedef enum {
|
|
PASS_SUCCEEDED,
|
|
PASS_READ_ERROR,
|
|
PASS_WRITE_ERROR,
|
|
PASS_INTERRUPTED
|
|
} pass_status_t;
|
|
|
|
static pass_status_t
|
|
process_cap_file_first_pass(capture_file *cf, int max_packet_count,
|
|
gint64 max_byte_count, int *err, gchar **err_info)
|
|
{
|
|
wtap_rec rec;
|
|
Buffer buf;
|
|
epan_dissect_t *edt = NULL;
|
|
gint64 data_offset;
|
|
pass_status_t status = PASS_SUCCEEDED;
|
|
int framenum = 0;
|
|
|
|
wtap_rec_init(&rec);
|
|
ws_buffer_init(&buf, 1514);
|
|
|
|
/* Allocate a frame_data_sequence for all the frames. */
|
|
cf->provider.frames = new_frame_data_sequence();
|
|
|
|
if (do_dissection) {
|
|
gboolean create_proto_tree;
|
|
|
|
/*
|
|
* Determine whether we need to create a protocol tree.
|
|
* We do if:
|
|
*
|
|
* we're going to apply a read filter;
|
|
*
|
|
* we're going to apply a display filter;
|
|
*
|
|
* a postdissector wants field values or protocols
|
|
* on the first pass.
|
|
*/
|
|
create_proto_tree =
|
|
(cf->rfcode != NULL || cf->dfcode != NULL || postdissectors_want_hfids() || dissect_color);
|
|
|
|
ws_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);
|
|
}
|
|
|
|
ws_debug("tshark: reading records for first pass");
|
|
*err = 0;
|
|
while (wtap_read(cf->provider.wth, &rec, &buf, err, err_info, &data_offset)) {
|
|
if (read_interrupted) {
|
|
status = PASS_INTERRUPTED;
|
|
break;
|
|
}
|
|
framenum++;
|
|
|
|
if (process_packet_first_pass(cf, edt, data_offset, &rec, &buf)) {
|
|
/* Stop reading if we hit a stop condition */
|
|
if (max_packet_count > 0 && framenum >= max_packet_count) {
|
|
ws_debug("tshark: max_packet_count (%d) reached", max_packet_count);
|
|
*err = 0; /* This is not an error */
|
|
break;
|
|
}
|
|
if (max_byte_count != 0 && data_offset >= max_byte_count) {
|
|
ws_debug("tshark: max_byte_count (%" PRId64 "/%" PRId64 ") reached",
|
|
data_offset, max_byte_count);
|
|
*err = 0; /* This is not an error */
|
|
break;
|
|
}
|
|
}
|
|
wtap_rec_reset(&rec);
|
|
}
|
|
if (*err != 0)
|
|
status = PASS_READ_ERROR;
|
|
|
|
if (edt)
|
|
epan_dissect_free(edt);
|
|
|
|
/* Close the sequential I/O side, to free up memory it requires. */
|
|
wtap_sequential_close(cf->provider.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();
|
|
|
|
cf->provider.prev_dis = NULL;
|
|
cf->provider.prev_cap = NULL;
|
|
|
|
ws_buffer_free(&buf);
|
|
wtap_rec_cleanup(&rec);
|
|
|
|
return status;
|
|
}
|
|
|
|
static gboolean
|
|
process_packet_second_pass(capture_file *cf, epan_dissect_t *edt,
|
|
frame_data *fdata, wtap_rec *rec,
|
|
Buffer *buf, guint tap_flags _U_)
|
|
{
|
|
column_info *cinfo;
|
|
gboolean passed;
|
|
wtap_block_t block = NULL;
|
|
|
|
/* 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. (This is the second pass of two
|
|
passes over the packets; that's the pass where we print
|
|
packet information or run taps.) */
|
|
if (edt) {
|
|
/* If we're running a display filter, prime the epan_dissect_t with that
|
|
filter. */
|
|
if (cf->dfcode)
|
|
epan_dissect_prime_with_dfilter(edt, cf->dfcode);
|
|
|
|
col_custom_prime_edt(edt, &cf->cinfo);
|
|
|
|
/* We only need the columns if either
|
|
1) some tap or filter 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 to an individual field
|
|
*/
|
|
if ((tap_listeners_require_columns()) || (print_packet_info && print_summary) || output_fields_has_cols(output_fields) || dfilter_requires_columns(cf->dfcode))
|
|
cinfo = &cf->cinfo;
|
|
else
|
|
cinfo = NULL;
|
|
|
|
frame_data_set_before_dissect(fdata, &cf->elapsed_time,
|
|
&cf->provider.ref, cf->provider.prev_dis);
|
|
if (cf->provider.ref == fdata) {
|
|
ref_frame = *fdata;
|
|
cf->provider.ref = &ref_frame;
|
|
}
|
|
|
|
if (dissect_color) {
|
|
color_filters_prime_edt(edt);
|
|
fdata->need_colorize = 1;
|
|
}
|
|
|
|
/* epan_dissect_run (and epan_dissect_reset) unref the block.
|
|
* We need it later, e.g. in order to copy the options. */
|
|
block = wtap_block_ref(rec->block);
|
|
epan_dissect_run_with_taps(edt, cf->cd_t, rec,
|
|
frame_tvbuff_new_buffer(&cf->provider, fdata, buf),
|
|
fdata, cinfo);
|
|
|
|
/* Run the read/display filter if we have one. */
|
|
if (cf->dfcode)
|
|
passed = dfilter_apply_edt(cf->dfcode, edt);
|
|
}
|
|
|
|
if (passed) {
|
|
frame_data_set_after_dissect(fdata, &cum_bytes);
|
|
/* Process this packet. */
|
|
if (print_packet_info) {
|
|
/* We're printing packet information; print the information for
|
|
this packet. */
|
|
print_packet(cf, edt);
|
|
|
|
/* If we're doing "line-buffering", flush the standard output
|
|
after every packet. See the comment above, for the "-l"
|
|
option, for an explanation of why we do that. */
|
|
if (line_buffered)
|
|
fflush(stdout);
|
|
|
|
if (ferror(stdout)) {
|
|
show_print_file_io_error();
|
|
exit(2);
|
|
}
|
|
}
|
|
cf->provider.prev_dis = fdata;
|
|
}
|
|
cf->provider.prev_cap = fdata;
|
|
|
|
if (edt) {
|
|
epan_dissect_reset(edt);
|
|
rec->block = block;
|
|
}
|
|
return passed || fdata->dependent_of_displayed;
|
|
}
|
|
|
|
static gboolean
|
|
process_new_idbs(wtap *wth, wtap_dumper *pdh, int *err, gchar **err_info)
|
|
{
|
|
wtap_block_t if_data;
|
|
|
|
while ((if_data = wtap_get_next_interface_description(wth)) != NULL) {
|
|
/*
|
|
* Only add interface blocks if the output file supports (meaning
|
|
* *requires*) them.
|
|
*
|
|
* That mean that the abstract interface provided by libwiretap
|
|
* involves WTAP_BLOCK_IF_ID_AND_INFO blocks.
|
|
*/
|
|
if (pdh != NULL) {
|
|
if (wtap_file_type_subtype_supports_block(wtap_dump_file_type_subtype(pdh), WTAP_BLOCK_IF_ID_AND_INFO) != BLOCK_NOT_SUPPORTED) {
|
|
if (!wtap_dump_add_idb(pdh, if_data, err, err_info))
|
|
return FALSE;
|
|
}
|
|
}
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static pass_status_t
|
|
process_cap_file_second_pass(capture_file *cf, wtap_dumper *pdh,
|
|
int *err, gchar **err_info,
|
|
volatile guint32 *err_framenum,
|
|
int max_write_packet_count)
|
|
{
|
|
wtap_rec rec;
|
|
Buffer buf;
|
|
int framenum = 0;
|
|
int write_framenum = 0;
|
|
frame_data *fdata;
|
|
gboolean filtering_tap_listeners;
|
|
guint tap_flags;
|
|
epan_dissect_t *edt = NULL;
|
|
pass_status_t status = PASS_SUCCEEDED;
|
|
|
|
/*
|
|
* Process whatever IDBs we haven't seen yet. This will be all
|
|
* the IDBs in the file, as we've finished reading it; they'll
|
|
* all be at the beginning of the output file.
|
|
*/
|
|
if (!process_new_idbs(cf->provider.wth, pdh, err, err_info)) {
|
|
*err_framenum = 0;
|
|
return PASS_WRITE_ERROR;
|
|
}
|
|
|
|
wtap_rec_init(&rec);
|
|
ws_buffer_init(&buf, 1514);
|
|
|
|
/* 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;
|
|
|
|
/*
|
|
* Determine whether we need to create a protocol tree.
|
|
* We do if:
|
|
*
|
|
* we're going to apply a display filter;
|
|
*
|
|
* we're going to print the protocol tree;
|
|
*
|
|
* one of the tap listeners requires a protocol tree;
|
|
*
|
|
* we have custom columns (which require field values, which
|
|
* currently requires that we build a protocol tree).
|
|
*/
|
|
create_proto_tree =
|
|
(cf->dfcode || print_details || filtering_tap_listeners ||
|
|
(tap_flags & TL_REQUIRES_PROTO_TREE) || have_custom_cols(&cf->cinfo) || dissect_color);
|
|
|
|
ws_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);
|
|
}
|
|
|
|
/*
|
|
* Force synchronous resolution of IP addresses; in this pass, we
|
|
* can't do it in the background and fix up past dissections.
|
|
*/
|
|
set_resolution_synchrony(TRUE);
|
|
|
|
for (framenum = 1; framenum <= (int)cf->count; framenum++) {
|
|
if (read_interrupted) {
|
|
status = PASS_INTERRUPTED;
|
|
break;
|
|
}
|
|
fdata = frame_data_sequence_find(cf->provider.frames, framenum);
|
|
if (!wtap_seek_read(cf->provider.wth, fdata->file_off, &rec, &buf, err,
|
|
err_info)) {
|
|
/* Error reading from the input file. */
|
|
status = PASS_READ_ERROR;
|
|
break;
|
|
}
|
|
ws_debug("tshark: invoking process_packet_second_pass() for frame #%d", framenum);
|
|
if (process_packet_second_pass(cf, edt, fdata, &rec, &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. */
|
|
write_framenum++;
|
|
if (pdh != NULL) {
|
|
ws_debug("tshark: writing packet #%d to outfile packet #%d", framenum, write_framenum);
|
|
if (!wtap_dump(pdh, &rec, ws_buffer_start_ptr(&buf), err, err_info)) {
|
|
/* Error writing to the output file. */
|
|
ws_debug("tshark: error writing to a capture file (%d)", *err);
|
|
*err_framenum = framenum;
|
|
status = PASS_WRITE_ERROR;
|
|
break;
|
|
}
|
|
/* Stop reading if we hit a stop condition */
|
|
if (max_write_packet_count > 0 && write_framenum >= max_write_packet_count) {
|
|
ws_debug("tshark: max_write_packet_count (%d) reached", max_write_packet_count);
|
|
*err = 0; /* This is not an error */
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
wtap_rec_reset(&rec);
|
|
}
|
|
|
|
if (edt)
|
|
epan_dissect_free(edt);
|
|
|
|
ws_buffer_free(&buf);
|
|
wtap_rec_cleanup(&rec);
|
|
|
|
return status;
|
|
}
|
|
|
|
static pass_status_t
|
|
process_cap_file_single_pass(capture_file *cf, wtap_dumper *pdh,
|
|
int max_packet_count, gint64 max_byte_count,
|
|
int max_write_packet_count,
|
|
int *err, gchar **err_info,
|
|
volatile guint32 *err_framenum)
|
|
{
|
|
wtap_rec rec;
|
|
Buffer buf;
|
|
gboolean create_proto_tree = FALSE;
|
|
gboolean filtering_tap_listeners;
|
|
guint tap_flags;
|
|
int framenum = 0;
|
|
int write_framenum = 0;
|
|
epan_dissect_t *edt = NULL;
|
|
gint64 data_offset;
|
|
pass_status_t status = PASS_SUCCEEDED;
|
|
|
|
wtap_rec_init(&rec);
|
|
ws_buffer_init(&buf, 1514);
|
|
|
|
/* 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) {
|
|
/*
|
|
* Determine whether we need to create a protocol tree.
|
|
* We do if:
|
|
*
|
|
* we're going to apply a read filter;
|
|
*
|
|
* we're going to apply a display filter;
|
|
*
|
|
* we're going to print the protocol tree;
|
|
*
|
|
* one of the tap listeners is going to apply a filter;
|
|
*
|
|
* one of the tap listeners requires a protocol tree;
|
|
*
|
|
* a postdissector wants field values or protocols
|
|
* on the first pass;
|
|
*
|
|
* we have custom columns (which require field values, which
|
|
* currently requires that we build a protocol tree).
|
|
*/
|
|
create_proto_tree =
|
|
(cf->rfcode || cf->dfcode || print_details || filtering_tap_listeners ||
|
|
(tap_flags & TL_REQUIRES_PROTO_TREE) || postdissectors_want_hfids() ||
|
|
have_custom_cols(&cf->cinfo) || dissect_color);
|
|
|
|
ws_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);
|
|
}
|
|
|
|
/*
|
|
* Force synchronous resolution of IP addresses; we're doing only
|
|
* one pass, so we can't do it in the background and fix up past
|
|
* dissections.
|
|
*/
|
|
set_resolution_synchrony(TRUE);
|
|
|
|
*err = 0;
|
|
while (wtap_read(cf->provider.wth, &rec, &buf, err, err_info, &data_offset)) {
|
|
if (read_interrupted) {
|
|
status = PASS_INTERRUPTED;
|
|
break;
|
|
}
|
|
framenum++;
|
|
|
|
/*
|
|
* Process whatever IDBs we haven't seen yet.
|
|
*/
|
|
if (!process_new_idbs(cf->provider.wth, pdh, err, err_info)) {
|
|
*err_framenum = framenum;
|
|
status = PASS_WRITE_ERROR;
|
|
break;
|
|
}
|
|
|
|
ws_debug("tshark: processing packet #%d", framenum);
|
|
|
|
reset_epan_mem(cf, edt, create_proto_tree, print_packet_info && print_details);
|
|
|
|
if (process_packet_single_pass(cf, edt, data_offset, &rec, &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. */
|
|
write_framenum++;
|
|
if (pdh != NULL) {
|
|
ws_debug("tshark: writing packet #%d to outfile as #%d",
|
|
framenum, write_framenum);
|
|
if (!wtap_dump(pdh, &rec, ws_buffer_start_ptr(&buf), err, err_info)) {
|
|
/* Error writing to the output file. */
|
|
ws_debug("tshark: error writing to a capture file (%d)", *err);
|
|
*err_framenum = framenum;
|
|
status = PASS_WRITE_ERROR;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
/* Stop reading if we hit a stop condition */
|
|
if (max_packet_count > 0 && framenum >= max_packet_count) {
|
|
ws_debug("tshark: max_packet_count (%d) reached", max_packet_count);
|
|
*err = 0; /* This is not an error */
|
|
break;
|
|
}
|
|
if (max_write_packet_count > 0 && write_framenum >= max_write_packet_count) {
|
|
ws_debug("tshark: max_write_packet_count (%d) reached", max_write_packet_count);
|
|
*err = 0; /* This is not an error */
|
|
break;
|
|
}
|
|
if (max_byte_count != 0 && data_offset >= max_byte_count) {
|
|
ws_debug("tshark: max_byte_count (%" PRId64 "/%" PRId64 ") reached",
|
|
data_offset, max_byte_count);
|
|
*err = 0; /* This is not an error */
|
|
break;
|
|
}
|
|
wtap_rec_reset(&rec);
|
|
}
|
|
if (status == PASS_SUCCEEDED) {
|
|
if (*err != 0) {
|
|
/* Error reading from the input file. */
|
|
status = PASS_READ_ERROR;
|
|
} else {
|
|
/*
|
|
* Process whatever IDBs we haven't seen yet.
|
|
*/
|
|
if (!process_new_idbs(cf->provider.wth, pdh, err, err_info)) {
|
|
*err_framenum = framenum;
|
|
status = PASS_WRITE_ERROR;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (edt)
|
|
epan_dissect_free(edt);
|
|
|
|
ws_buffer_free(&buf);
|
|
wtap_rec_cleanup(&rec);
|
|
|
|
return status;
|
|
}
|
|
|
|
static process_file_status_t
|
|
process_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,
|
|
int max_write_packet_count)
|
|
{
|
|
process_file_status_t status = PROCESS_FILE_SUCCEEDED;
|
|
wtap_dumper *pdh;
|
|
#ifndef _WIN32
|
|
struct sigaction action, oldaction;
|
|
#endif
|
|
int err = 0, err_pass1 = 0;
|
|
gchar *err_info = NULL, *err_info_pass1 = NULL;
|
|
volatile guint32 err_framenum;
|
|
wtap_dump_params params = WTAP_DUMP_PARAMS_INIT;
|
|
char *shb_user_appl;
|
|
pass_status_t first_pass_status, second_pass_status;
|
|
|
|
if (save_file != NULL) {
|
|
/* Set up to write to the capture file. */
|
|
wtap_dump_params_init_no_idbs(¶ms, cf->provider.wth);
|
|
|
|
/* If we don't have an application name add TShark */
|
|
if (wtap_block_get_string_option_value(g_array_index(params.shb_hdrs, wtap_block_t, 0), OPT_SHB_USERAPPL, &shb_user_appl) != WTAP_OPTTYPE_SUCCESS) {
|
|
/* this is free'd by wtap_block_unref() later */
|
|
wtap_block_add_string_option_format(g_array_index(params.shb_hdrs, wtap_block_t, 0), OPT_SHB_USERAPPL, "%s", get_appname_and_version());
|
|
}
|
|
if (capture_comments != NULL) {
|
|
for (guint i = 0; i < capture_comments->len; i++) {
|
|
wtap_block_add_string_option_format(g_array_index(params.shb_hdrs, wtap_block_t, 0),
|
|
OPT_COMMENT, "%s",
|
|
(char *)g_ptr_array_index(capture_comments, i));
|
|
}
|
|
}
|
|
|
|
ws_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(out_file_type, WTAP_UNCOMPRESSED, ¶ms,
|
|
&err, &err_info);
|
|
} else {
|
|
pdh = wtap_dump_open(save_file, out_file_type, WTAP_UNCOMPRESSED, ¶ms,
|
|
&err, &err_info);
|
|
}
|
|
|
|
g_free(params.idb_inf);
|
|
params.idb_inf = NULL;
|
|
|
|
if (pdh == NULL) {
|
|
/* We couldn't set up to write to the capture file. */
|
|
cfile_dump_open_failure_message(save_file, err, err_info,
|
|
out_file_type);
|
|
status = PROCESS_FILE_NO_FILE_PROCESSED;
|
|
goto out;
|
|
}
|
|
} else {
|
|
/* Set up to print packet information. */
|
|
if (print_packet_info) {
|
|
if (!write_preamble(cf)) {
|
|
show_print_file_io_error();
|
|
status = PROCESS_FILE_NO_FILE_PROCESSED;
|
|
goto out;
|
|
}
|
|
}
|
|
pdh = NULL;
|
|
}
|
|
|
|
#ifdef _WIN32
|
|
/* Catch a CTRL+C event and, if we get it, clean up and exit. */
|
|
SetConsoleCtrlHandler(read_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 = read_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);
|
|
#endif /* _WIN32 */
|
|
|
|
if (perform_two_pass_analysis) {
|
|
ws_debug("tshark: perform_two_pass_analysis, do_dissection=%s", do_dissection ? "TRUE" : "FALSE");
|
|
|
|
first_pass_status = process_cap_file_first_pass(cf, max_packet_count,
|
|
max_byte_count,
|
|
&err_pass1,
|
|
&err_info_pass1);
|
|
|
|
ws_debug("tshark: done with first pass");
|
|
|
|
if (first_pass_status == PASS_INTERRUPTED) {
|
|
/* The first pass was interrupted; skip the second pass.
|
|
It won't be run, so it won't get an error. */
|
|
second_pass_status = PASS_SUCCEEDED;
|
|
} else {
|
|
/*
|
|
* If we got a read error on the first pass, we still do the second
|
|
* pass, so we can at least process the packets we read, and then
|
|
* report the first-pass error after the second pass (and before
|
|
* we report any second-pass errors), so all the errors show up
|
|
* at the end.
|
|
*/
|
|
second_pass_status = process_cap_file_second_pass(cf, pdh, &err, &err_info,
|
|
&err_framenum,
|
|
max_write_packet_count);
|
|
|
|
ws_debug("tshark: done with second pass");
|
|
}
|
|
}
|
|
else {
|
|
/* !perform_two_pass_analysis */
|
|
ws_debug("tshark: perform one pass analysis, do_dissection=%s", do_dissection ? "TRUE" : "FALSE");
|
|
|
|
first_pass_status = PASS_SUCCEEDED; /* There is no first pass */
|
|
second_pass_status = process_cap_file_single_pass(cf, pdh,
|
|
max_packet_count,
|
|
max_byte_count,
|
|
max_write_packet_count,
|
|
&err, &err_info,
|
|
&err_framenum);
|
|
}
|
|
|
|
if (first_pass_status != PASS_SUCCEEDED ||
|
|
second_pass_status != PASS_SUCCEEDED) {
|
|
/*
|
|
* At least one of the passes didn't succeed; either it got a failure
|
|
* or it was interrupted.
|
|
*/
|
|
if (first_pass_status != PASS_INTERRUPTED ||
|
|
second_pass_status != PASS_INTERRUPTED) {
|
|
/* At least one of the passes got an error. */
|
|
ws_debug("tshark: something failed along the line (%d)", err);
|
|
/*
|
|
* 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
|
|
}
|
|
/* Report status of pass 1 of two-pass processing. */
|
|
switch (first_pass_status) {
|
|
|
|
case PASS_SUCCEEDED:
|
|
/* No problem. */
|
|
break;
|
|
|
|
case PASS_READ_ERROR:
|
|
/* Read error. */
|
|
cfile_read_failure_message(cf->filename, err_pass1, err_info_pass1);
|
|
status = PROCESS_FILE_ERROR;
|
|
break;
|
|
|
|
case PASS_WRITE_ERROR:
|
|
/* Won't happen on the first pass. */
|
|
break;
|
|
|
|
case PASS_INTERRUPTED:
|
|
/* Not an error, so nothing to report. */
|
|
status = PROCESS_FILE_INTERRUPTED;
|
|
break;
|
|
}
|
|
|
|
/* Report status of pass 2 of two-pass processing or the only pass
|
|
of one-pass processing. */
|
|
switch (second_pass_status) {
|
|
|
|
case PASS_SUCCEEDED:
|
|
/* No problem. */
|
|
break;
|
|
|
|
case PASS_READ_ERROR:
|
|
/* Read error. */
|
|
cfile_read_failure_message(cf->filename, err, err_info);
|
|
status = PROCESS_FILE_ERROR;
|
|
break;
|
|
|
|
case PASS_WRITE_ERROR:
|
|
/* Write error.
|
|
XXX - framenum is not necessarily the frame number in
|
|
the input file if there was a read filter. */
|
|
cfile_write_failure_message(cf->filename, save_file, err, err_info,
|
|
err_framenum, out_file_type);
|
|
status = PROCESS_FILE_ERROR;
|
|
break;
|
|
|
|
case PASS_INTERRUPTED:
|
|
/* Not an error, so nothing to report. */
|
|
status = PROCESS_FILE_INTERRUPTED;
|
|
break;
|
|
}
|
|
}
|
|
if (save_file != NULL) {
|
|
if (second_pass_status != PASS_WRITE_ERROR) {
|
|
if (pdh && out_file_name_res) {
|
|
/* XXX: This doesn't work as expected. First, it should be
|
|
* moved to between the first and second passes (if doing
|
|
* two-pass mode), so that the new NRB appears before packets,
|
|
* which is better for subsequent one-pass mode. It never works
|
|
* well in one-pass mode.
|
|
*
|
|
* Second, it only writes hosts that we've done lookups for,
|
|
* which means unless packet details are printed (or there's
|
|
* a display filter that matches something that will do a host
|
|
* lookup, e.g. -Y "ip") it doesn't actually have anything
|
|
* in the list to save. Notably, that includes the case of
|
|
* "tshark [-2] -H hosts.txt -r <infile> -w <outfile>",
|
|
* which a user would certainly expect to dissect packets,
|
|
* lookup hostnames, and add them to an NRB for later use.
|
|
* A workaround is if "-V > /dev/null" is added, but who
|
|
* expects that?
|
|
*
|
|
* A third issue is that name resolution blocks aren't
|
|
* written for live captures.
|
|
*/
|
|
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_name(out_file_type));
|
|
}
|
|
}
|
|
/* Now close the capture file. */
|
|
if (!wtap_dump_close(pdh, NULL, &err, &err_info)) {
|
|
cfile_close_failure_message(save_file, err, err_info);
|
|
status = PROCESS_FILE_ERROR;
|
|
}
|
|
} else {
|
|
/* We got a write error; it was reported, so just close the dump file
|
|
without bothering to check for further errors. */
|
|
wtap_dump_close(pdh, NULL, &err, &err_info);
|
|
g_free(err_info);
|
|
status = PROCESS_FILE_ERROR;
|
|
}
|
|
} else {
|
|
if (print_packet_info) {
|
|
if (!write_finale()) {
|
|
show_print_file_io_error();
|
|
status = PROCESS_FILE_ERROR;
|
|
}
|
|
}
|
|
}
|
|
|
|
out:
|
|
wtap_close(cf->provider.wth);
|
|
cf->provider.wth = NULL;
|
|
|
|
wtap_dump_params_cleanup(¶ms);
|
|
|
|
return status;
|
|
}
|
|
|
|
static gboolean
|
|
process_packet_single_pass(capture_file *cf, epan_dissect_t *edt, gint64 offset,
|
|
wtap_rec *rec, Buffer *buf, guint tap_flags _U_)
|
|
{
|
|
frame_data fdata;
|
|
column_info *cinfo;
|
|
gboolean passed;
|
|
wtap_block_t block = NULL;
|
|
|
|
/* Count this packet. */
|
|
cf->count++;
|
|
|
|
/* If we're not running a display filter and we're not printing any
|
|
packet information, we don't need to do a dissection. This means
|
|
that all packets can be marked as 'passed'. */
|
|
passed = TRUE;
|
|
|
|
frame_data_init(&fdata, cf->count, rec, offset, cum_bytes);
|
|
|
|
/* If we're going to print packet information, or we're going to
|
|
run a read filter, or we're going to process taps, set up to
|
|
do a dissection and do so. (This is the one and only pass
|
|
over the packets, so, if we'll be printing packet information
|
|
or running taps, we'll be doing it here.) */
|
|
if (edt) {
|
|
/* If we're running a filter, prime the epan_dissect_t with that
|
|
filter. */
|
|
if (cf->dfcode)
|
|
epan_dissect_prime_with_dfilter(edt, cf->dfcode);
|
|
|
|
/* This is the first and only pass, so prime the epan_dissect_t
|
|
with the hfids postdissectors want on the first pass. */
|
|
prime_epan_dissect_with_postdissector_wanted_hfids(edt);
|
|
|
|
col_custom_prime_edt(edt, &cf->cinfo);
|
|
|
|
/* We only need the columns if either
|
|
1) some tap or filter needs the columns
|
|
or
|
|
2) we're printing packet info but we're *not* verbose; in verbose
|
|
mode, we print the protocol tree, not the protocol summary.
|
|
or
|
|
3) there is a column mapped as an individual field */
|
|
if ((tap_listeners_require_columns()) || (print_packet_info && print_summary) || output_fields_has_cols(output_fields) || dfilter_requires_columns(cf->dfcode))
|
|
cinfo = &cf->cinfo;
|
|
else
|
|
cinfo = NULL;
|
|
|
|
frame_data_set_before_dissect(&fdata, &cf->elapsed_time,
|
|
&cf->provider.ref, cf->provider.prev_dis);
|
|
if (cf->provider.ref == &fdata) {
|
|
ref_frame = fdata;
|
|
cf->provider.ref = &ref_frame;
|
|
}
|
|
|
|
if (dissect_color) {
|
|
color_filters_prime_edt(edt);
|
|
fdata.need_colorize = 1;
|
|
}
|
|
|
|
/* epan_dissect_run (and epan_dissect_reset) unref the block.
|
|
* We need it later, e.g. in order to copy the options. */
|
|
block = wtap_block_ref(rec->block);
|
|
epan_dissect_run_with_taps(edt, cf->cd_t, rec,
|
|
frame_tvbuff_new_buffer(&cf->provider, &fdata, buf),
|
|
&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. */
|
|
ws_assert(edt);
|
|
print_packet(cf, edt);
|
|
|
|
/* If we're doing "line-buffering", flush the standard output
|
|
after every packet. See the comment above, for the "-l"
|
|
option, for an explanation of why we do that. */
|
|
if (line_buffered)
|
|
fflush(stdout);
|
|
|
|
if (ferror(stdout)) {
|
|
show_print_file_io_error();
|
|
exit(2);
|
|
}
|
|
}
|
|
|
|
/* this must be set after print_packet() [bug #8160] */
|
|
prev_dis_frame = fdata;
|
|
cf->provider.prev_dis = &prev_dis_frame;
|
|
}
|
|
|
|
prev_cap_frame = fdata;
|
|
cf->provider.prev_cap = &prev_cap_frame;
|
|
|
|
if (edt) {
|
|
epan_dissect_reset(edt);
|
|
frame_data_destroy(&fdata);
|
|
rec->block = block;
|
|
}
|
|
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);
|
|
|
|
case WRITE_JSON:
|
|
case WRITE_JSON_RAW:
|
|
jdumper = write_json_preamble(stdout);
|
|
return !ferror(stdout);
|
|
|
|
case WRITE_EK:
|
|
return TRUE;
|
|
|
|
default:
|
|
ws_assert_not_reached();
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static char *
|
|
get_line_buf(size_t len)
|
|
{
|
|
static char *line_bufp = NULL;
|
|
static size_t line_buf_len = 256;
|
|
size_t new_line_buf_len;
|
|
|
|
for (new_line_buf_len = line_buf_len; len > new_line_buf_len;
|
|
new_line_buf_len *= 2)
|
|
;
|
|
if (line_bufp == NULL) {
|
|
line_buf_len = new_line_buf_len;
|
|
line_bufp = (char *)g_malloc(line_buf_len + 1);
|
|
} else {
|
|
if (new_line_buf_len > line_buf_len) {
|
|
line_buf_len = new_line_buf_len;
|
|
line_bufp = (char *)g_realloc(line_bufp, line_buf_len + 1);
|
|
}
|
|
}
|
|
return line_bufp;
|
|
}
|
|
|
|
static inline void
|
|
put_string(char *dest, const char *str, size_t str_len)
|
|
{
|
|
memcpy(dest, str, str_len);
|
|
dest[str_len] = '\0';
|
|
}
|
|
|
|
static inline void
|
|
put_spaces_string(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
|
|
{
|
|
size_t i;
|
|
|
|
for (i = str_len; i < str_with_spaces; i++)
|
|
*dest++ = ' ';
|
|
|
|
put_string(dest, str, str_len);
|
|
}
|
|
|
|
static inline void
|
|
put_string_spaces(char *dest, const char *str, size_t str_len, size_t str_with_spaces)
|
|
{
|
|
size_t i;
|
|
|
|
memcpy(dest, str, str_len);
|
|
for (i = str_len; i < str_with_spaces; i++)
|
|
dest[i] = ' ';
|
|
|
|
dest[str_with_spaces] = '\0';
|
|
}
|
|
|
|
static gboolean
|
|
print_columns(capture_file *cf, const epan_dissect_t *edt)
|
|
{
|
|
char *line_bufp;
|
|
int i;
|
|
size_t buf_offset;
|
|
size_t column_len;
|
|
size_t col_len;
|
|
col_item_t* col_item;
|
|
gchar str_format[11];
|
|
const color_filter_t *color_filter = NULL;
|
|
|
|
line_bufp = get_line_buf(256);
|
|
buf_offset = 0;
|
|
*line_bufp = '\0';
|
|
|
|
if (dissect_color)
|
|
color_filter = edt->pi.fd->color_filter;
|
|
|
|
for (i = 0; i < cf->cinfo.num_cols; i++) {
|
|
col_item = &cf->cinfo.columns[i];
|
|
/* Skip columns not marked as visible. */
|
|
if (!get_column_visible(i))
|
|
continue;
|
|
const gchar* col_text = get_column_text(&cf->cinfo, i);
|
|
switch (col_item->col_fmt) {
|
|
case COL_NUMBER:
|
|
column_len = col_len = strlen(col_text);
|
|
if (column_len < 5)
|
|
column_len = 5;
|
|
line_bufp = get_line_buf(buf_offset + column_len);
|
|
put_spaces_string(line_bufp + buf_offset, col_text, col_len, column_len);
|
|
break;
|
|
|
|
case COL_CLS_TIME:
|
|
case COL_REL_TIME:
|
|
case COL_ABS_TIME:
|
|
case COL_ABS_YMD_TIME: /* XXX - wider */
|
|
case COL_ABS_YDOY_TIME: /* XXX - wider */
|
|
case COL_UTC_TIME:
|
|
case COL_UTC_YMD_TIME: /* XXX - wider */
|
|
case COL_UTC_YDOY_TIME: /* XXX - wider */
|
|
column_len = col_len = strlen(col_text);
|
|
if (column_len < 10)
|
|
column_len = 10;
|
|
line_bufp = get_line_buf(buf_offset + column_len);
|
|
put_spaces_string(line_bufp + buf_offset, col_text, col_len, column_len);
|
|
break;
|
|
|
|
case COL_DEF_SRC:
|
|
case COL_RES_SRC:
|
|
case COL_UNRES_SRC:
|
|
case COL_DEF_DL_SRC:
|
|
case COL_RES_DL_SRC:
|
|
case COL_UNRES_DL_SRC:
|
|
case COL_DEF_NET_SRC:
|
|
case COL_RES_NET_SRC:
|
|
case COL_UNRES_NET_SRC:
|
|
column_len = col_len = strlen(col_text);
|
|
if (column_len < 12)
|
|
column_len = 12;
|
|
line_bufp = get_line_buf(buf_offset + column_len);
|
|
put_spaces_string(line_bufp + buf_offset, col_text, col_len, column_len);
|
|
break;
|
|
|
|
case COL_DEF_DST:
|
|
case COL_RES_DST:
|
|
case COL_UNRES_DST:
|
|
case COL_DEF_DL_DST:
|
|
case COL_RES_DL_DST:
|
|
case COL_UNRES_DL_DST:
|
|
case COL_DEF_NET_DST:
|
|
case COL_RES_NET_DST:
|
|
case COL_UNRES_NET_DST:
|
|
column_len = col_len = strlen(col_text);
|
|
if (column_len < 12)
|
|
column_len = 12;
|
|
line_bufp = get_line_buf(buf_offset + column_len);
|
|
put_string_spaces(line_bufp + buf_offset, col_text, col_len, column_len);
|
|
break;
|
|
|
|
default:
|
|
column_len = strlen(col_text);
|
|
line_bufp = get_line_buf(buf_offset + column_len);
|
|
put_string(line_bufp + buf_offset, col_text, column_len);
|
|
break;
|
|
}
|
|
buf_offset += column_len;
|
|
if (i != cf->cinfo.num_cols - 1) {
|
|
/*
|
|
* This isn't the last column, so we need to print a
|
|
* separator between this column and the next.
|
|
*
|
|
* If we printed a network source and are printing a
|
|
* network destination of the same type next, separate
|
|
* them with a UTF-8 right arrow; if we printed a network
|
|
* destination and are printing a network source of the same
|
|
* type next, separate them with a UTF-8 left arrow;
|
|
* otherwise separate them with a space.
|
|
*
|
|
* We add enough space to the buffer for " \xe2\x86\x90 "
|
|
* or " \xe2\x86\x92 ", even if we're only adding " ".
|
|
*/
|
|
line_bufp = get_line_buf(buf_offset + 5);
|
|
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:
|
|
snprintf(str_format, sizeof(str_format), "%s%s%s", delimiter_char, UTF8_RIGHTWARDS_ARROW, delimiter_char);
|
|
put_string(line_bufp + buf_offset, str_format, 5);
|
|
buf_offset += 5;
|
|
break;
|
|
|
|
default:
|
|
put_string(line_bufp + buf_offset, delimiter_char, 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:
|
|
snprintf(str_format, sizeof(str_format), "%s%s%s", delimiter_char, UTF8_RIGHTWARDS_ARROW, delimiter_char);
|
|
put_string(line_bufp + buf_offset, str_format, 5);
|
|
buf_offset += 5;
|
|
break;
|
|
|
|
default:
|
|
put_string(line_bufp + buf_offset, delimiter_char, 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:
|
|
snprintf(str_format, sizeof(str_format), "%s%s%s", delimiter_char, UTF8_RIGHTWARDS_ARROW, delimiter_char);
|
|
put_string(line_bufp + buf_offset, str_format, 5);
|
|
buf_offset += 5;
|
|
break;
|
|
|
|
default:
|
|
put_string(line_bufp + buf_offset, delimiter_char, 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:
|
|
snprintf(str_format, sizeof(str_format), "%s%s%s", delimiter_char, UTF8_LEFTWARDS_ARROW, delimiter_char);
|
|
put_string(line_bufp + buf_offset, str_format, 5);
|
|
buf_offset += 5;
|
|
break;
|
|
|
|
default:
|
|
put_string(line_bufp + buf_offset, delimiter_char, 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:
|
|
snprintf(str_format, sizeof(str_format), "%s%s%s", delimiter_char, UTF8_LEFTWARDS_ARROW, delimiter_char);
|
|
put_string(line_bufp + buf_offset, str_format, 5);
|
|
buf_offset += 5;
|
|
break;
|
|
|
|
default:
|
|
put_string(line_bufp + buf_offset, delimiter_char, 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:
|
|
snprintf(str_format, sizeof(str_format), "%s%s%s", delimiter_char, UTF8_LEFTWARDS_ARROW, delimiter_char);
|
|
put_string(line_bufp + buf_offset, str_format, 5);
|
|
buf_offset += 5;
|
|
break;
|
|
|
|
default:
|
|
put_string(line_bufp + buf_offset, delimiter_char, 1);
|
|
buf_offset += 1;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
put_string(line_bufp + buf_offset, delimiter_char, 1);
|
|
buf_offset += 1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (dissect_color && color_filter != NULL)
|
|
return print_line_color(print_stream, 0, line_bufp, &color_filter->fg_color, &color_filter->bg_color);
|
|
else
|
|
return print_line(print_stream, 0, line_bufp);
|
|
}
|
|
|
|
static gboolean
|
|
print_packet(capture_file *cf, epan_dissect_t *edt)
|
|
{
|
|
if (print_summary || output_fields_has_cols(output_fields))
|
|
/* Just fill in the columns. */
|
|
epan_dissect_fill_in_columns(edt, FALSE, TRUE);
|
|
|
|
/* Print summary columns and/or protocol tree */
|
|
switch (output_action) {
|
|
|
|
case WRITE_TEXT:
|
|
if (print_summary && !print_columns(cf, edt))
|
|
return FALSE;
|
|
if (print_details) {
|
|
if (!proto_tree_print(print_details ? print_dissections_expanded : print_dissections_none,
|
|
print_hex, edt, output_only_tables, print_stream))
|
|
return FALSE;
|
|
if (!print_hex) {
|
|
if (!print_line(print_stream, 0, separator))
|
|
return FALSE;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case WRITE_XML:
|
|
if (print_summary) {
|
|
write_psml_columns(edt, stdout, dissect_color);
|
|
return !ferror(stdout);
|
|
}
|
|
if (print_details) {
|
|
write_pdml_proto_tree(output_fields, edt, &cf->cinfo, stdout, dissect_color);
|
|
printf("\n");
|
|
return !ferror(stdout);
|
|
}
|
|
break;
|
|
|
|
case WRITE_FIELDS:
|
|
if (print_summary) {
|
|
/*No non-verbose "fields" format */
|
|
ws_assert_not_reached();
|
|
}
|
|
if (print_details) {
|
|
write_fields_proto_tree(output_fields, edt, &cf->cinfo, stdout);
|
|
printf("\n");
|
|
return !ferror(stdout);
|
|
}
|
|
break;
|
|
|
|
case WRITE_JSON:
|
|
if (print_summary)
|
|
ws_assert_not_reached();
|
|
if (print_details) {
|
|
write_json_proto_tree(output_fields, print_dissections_expanded,
|
|
print_hex, edt, &cf->cinfo, node_children_grouper, &jdumper);
|
|
return !ferror(stdout);
|
|
}
|
|
break;
|
|
|
|
case WRITE_JSON_RAW:
|
|
if (print_summary)
|
|
ws_assert_not_reached();
|
|
if (print_details) {
|
|
write_json_proto_tree(output_fields, print_dissections_none,
|
|
TRUE, edt, &cf->cinfo, node_children_grouper, &jdumper);
|
|
return !ferror(stdout);
|
|
}
|
|
break;
|
|
|
|
case WRITE_EK:
|
|
write_ek_proto_tree(output_fields, print_summary, print_hex,
|
|
edt, &cf->cinfo, stdout);
|
|
return !ferror(stdout);
|
|
|
|
default:
|
|
ws_assert_not_reached();
|
|
}
|
|
|
|
if (print_hex) {
|
|
if (print_summary || print_details) {
|
|
if (!print_line(print_stream, 0, ""))
|
|
return FALSE;
|
|
}
|
|
if (!print_hex_data(print_stream, edt, hexdump_source_option | hexdump_ascii_option))
|
|
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);
|
|
|
|
case WRITE_JSON:
|
|
case WRITE_JSON_RAW:
|
|
write_json_finale(&jdumper);
|
|
return !ferror(stdout);
|
|
|
|
case WRITE_EK:
|
|
return TRUE;
|
|
|
|
default:
|
|
ws_assert_not_reached();
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
void
|
|
cf_close(capture_file *cf)
|
|
{
|
|
if (cf->state == FILE_CLOSED)
|
|
return; /* Nothing to do */
|
|
|
|
if (cf->provider.wth != NULL) {
|
|
wtap_close(cf->provider.wth);
|
|
cf->provider.wth = NULL;
|
|
}
|
|
/* We have no file open... */
|
|
if (cf->filename != NULL) {
|
|
/* If it's a temporary file, remove it. */
|
|
if (cf->is_tempfile)
|
|
ws_unlink(cf->filename);
|
|
g_free(cf->filename);
|
|
cf->filename = NULL;
|
|
}
|
|
|
|
/* We have no file open. */
|
|
cf->state = FILE_CLOSED;
|
|
}
|
|
|
|
cf_status_t
|
|
cf_open(capture_file *cf, const char *fname, unsigned int type, gboolean is_tempfile, int *err)
|
|
{
|
|
wtap *wth;
|
|
gchar *err_info;
|
|
|
|
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. */
|
|
|
|
cf->provider.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->provider.wth);
|
|
cf->open_type = type;
|
|
cf->count = 0;
|
|
cf->drops_known = FALSE;
|
|
cf->drops = 0;
|
|
cf->snap = wtap_snapshot_length(cf->provider.wth);
|
|
nstime_set_zero(&cf->elapsed_time);
|
|
cf->provider.ref = NULL;
|
|
cf->provider.prev_dis = NULL;
|
|
cf->provider.prev_cap = NULL;
|
|
|
|
cf->state = FILE_READ_IN_PROGRESS;
|
|
|
|
/* Create new epan session for dissection. */
|
|
epan_free(cf->epan);
|
|
cf->epan = tshark_epan_new(cf);
|
|
|
|
wtap_set_cb_new_ipv4(cf->provider.wth, add_ipv4_name);
|
|
wtap_set_cb_new_ipv6(cf->provider.wth, (wtap_new_ipv6_callback_t) add_ipv6_name);
|
|
wtap_set_cb_new_secrets(cf->provider.wth, secrets_wtap_callback);
|
|
|
|
return CF_OK;
|
|
|
|
fail:
|
|
cfile_open_failure_message(fname, *err, err_info);
|
|
return CF_ERROR;
|
|
}
|
|
|
|
static void
|
|
show_print_file_io_error(void)
|
|
{
|
|
switch (errno) {
|
|
|
|
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
|
|
|
|
case EPIPE:
|
|
/*
|
|
* This almost certainly means "the next program after us in
|
|
* the pipeline exited before we were finished writing", so
|
|
* this isn't a real error, it just means we're done. (We
|
|
* don't get SIGPIPE because libwireshark ignores SIGPIPE
|
|
* to avoid getting killed if writing to the MaxMind process
|
|
* gets SIGPIPE because that process died.)
|
|
*
|
|
* Presumably either that program exited deliberately (for
|
|
* example, "head -N" read N lines and printed them), in
|
|
* which case there's no error to report, or it terminated
|
|
* due to an error or a signal, in which case *that's* the
|
|
* error and that error has been reported.
|
|
*/
|
|
break;
|
|
|
|
default:
|
|
#ifdef _WIN32
|
|
if (errno == EINVAL && _doserrno == ERROR_NO_DATA) {
|
|
/*
|
|
* XXX - on Windows, a write to a pipe where the read side
|
|
* has been closed apparently may return the Windows error
|
|
* ERROR_BROKEN_PIPE, which the Visual Studio C library maps
|
|
* to EPIPE, or may return the Windows error ERROR_NO_DATA,
|
|
* which the Visual Studio C library maps to EINVAL.
|
|
*
|
|
* Either of those almost certainly means "the next program
|
|
* after us in the pipeline exited before we were finished
|
|
* writing", so, if _doserrno is ERROR_NO_DATA, this isn't
|
|
* a real error, it just means we're done. (Windows doesn't
|
|
* SIGPIPE.)
|
|
*
|
|
* Presumably either that program exited deliberately (for
|
|
* example, "head -N" read N lines and printed them), in
|
|
* which case there's no error to report, or it terminated
|
|
* due to an error or a signal, in which case *that's* the
|
|
* error and that error has been reported.
|
|
*/
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* It's a different error; report it, but with the error
|
|
* message for _doserrno, which will give more detail
|
|
* than just "Invalid argument".
|
|
*/
|
|
cmdarg_err("An error occurred while printing packets: %s.",
|
|
win32strerror(_doserrno));
|
|
#else
|
|
cmdarg_err("An error occurred while printing packets: %s.",
|
|
g_strerror(errno));
|
|
#endif
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Report an error in command-line arguments.
|
|
*/
|
|
static void
|
|
tshark_cmdarg_err(const char *msg_format, va_list ap)
|
|
{
|
|
fprintf(stderr, "tshark: ");
|
|
vfprintf(stderr, msg_format, ap);
|
|
fprintf(stderr, "\n");
|
|
}
|
|
|
|
/*
|
|
* Report additional information for an error in command-line arguments.
|
|
*/
|
|
static void
|
|
tshark_cmdarg_err_cont(const char *msg_format, va_list ap)
|
|
{
|
|
vfprintf(stderr, msg_format, ap);
|
|
fprintf(stderr, "\n");
|
|
}
|
|
|
|
static void
|
|
reset_epan_mem(capture_file *cf,epan_dissect_t *edt, gboolean tree, gboolean visual)
|
|
{
|
|
if (!epan_auto_reset || (cf->count < epan_auto_reset_count))
|
|
return;
|
|
|
|
fprintf(stderr, "resetting session.\n");
|
|
|
|
epan_dissect_cleanup(edt);
|
|
epan_free(cf->epan);
|
|
|
|
cf->epan = tshark_epan_new(cf);
|
|
epan_dissect_init(edt, cf->epan, tree, visual);
|
|
cf->count = 0;
|
|
}
|