![Guy Harris](/assets/img/avatar_default.png)
pseudo-header, and hence there's no direction indication. Don't set pinfo->p2p_dir for it. Use WTAP_ENCAP_BLUETOOTH_H4_WITH_PHDR, not WTAP_ENCAP_BLUETOOTH_H4, for capture files where we have the direction. Don't assume pinfo->p2p_dir is either P2P_DIR_SENT or P2P_DIR_RECV when setting the info column in various Bluetooth dissectors; it might be unknown. In the HCI H4 dissector, put the direction into the info column regardless of whether we have a type match or not; the dissectors for HCI packet types appear to assume it's been set (as they put a blank at the beginning of the stuff they append to the direction). svn path=/trunk/; revision=35933
680 lines
22 KiB
C
680 lines
22 KiB
C
/* packet-frame.c
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*
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* Top-most dissector. Decides dissector based on Wiretap Encapsulation Type.
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 2000 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#ifdef _MSC_VER
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#include <windows.h>
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#endif
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#include <glib.h>
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#include <epan/packet.h>
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#include <epan/timestamp.h>
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#include <epan/tvbuff.h>
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#include "packet-frame.h"
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#include <epan/prefs.h>
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#include <epan/tap.h>
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#include <epan/expert.h>
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#include <epan/crypt/crypt-md5.h>
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#include "color.h"
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#include "color_filters.h"
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int proto_frame = -1;
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int hf_frame_arrival_time = -1;
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int hf_frame_arrival_time_epoch = -1;
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static int hf_frame_time_invalid = -1;
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static int hf_frame_time_delta = -1;
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static int hf_frame_time_delta_displayed = -1;
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static int hf_frame_time_relative = -1;
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static int hf_frame_time_reference = -1;
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int hf_frame_number = -1;
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int hf_frame_len = -1;
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int hf_frame_capture_len = -1;
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static int hf_frame_p2p_dir = -1;
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static int hf_frame_file_off = -1;
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static int hf_frame_md5_hash = -1;
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static int hf_frame_marked = -1;
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static int hf_frame_ignored = -1;
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static int hf_link_number = -1;
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static int hf_frame_protocols = -1;
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static int hf_frame_color_filter_name = -1;
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static int hf_frame_color_filter_text = -1;
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static int proto_short = -1;
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int proto_malformed = -1;
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static int proto_unreassembled = -1;
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static gint ett_frame = -1;
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static int frame_tap = -1;
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static dissector_handle_t data_handle;
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static dissector_handle_t docsis_handle;
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/* Preferences */
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static gboolean show_file_off = FALSE;
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static gboolean force_docsis_encap = FALSE;
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static gboolean generate_md5_hash = FALSE;
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static gboolean generate_epoch_time = TRUE;
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static const value_string p2p_dirs[] = {
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{ P2P_DIR_UNKNOWN, "Unknown" },
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{ P2P_DIR_SENT, "Sent" },
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{ P2P_DIR_RECV, "Received" },
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{ 0, NULL }
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};
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dissector_table_t wtap_encap_dissector_table;
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static GSList *frame_end_routines = NULL;
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/*
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* Routine used to register frame end routine. The routine should only
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* be registered when the dissector is used in the frame, not in the
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* proto_register_XXX function.
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*/
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void
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register_frame_end_routine(void (*func)(void))
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{
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frame_end_routines = g_slist_append(frame_end_routines, (gpointer)func);
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}
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typedef void (*void_func_t)(void);
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static void
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call_frame_end_routine(gpointer routine, gpointer dummy _U_)
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{
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void_func_t func = (void_func_t)routine;
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(*func)();
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}
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static void
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dissect_frame(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree)
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{
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proto_item *volatile ti = NULL;
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nstime_t ts;
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guint cap_len = 0, frame_len = 0;
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proto_tree *volatile tree;
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proto_item *item;
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guint32 frame_number;
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const gchar *cap_plurality, *frame_plurality;
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frame_number=pinfo->fd->num; /* dummy so that the buildbot crashdumps
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will show the packetnumber where the
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crash occurred.
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*/
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tree=parent_tree;
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pinfo->current_proto = "Frame";
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if (pinfo->pseudo_header != NULL) {
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switch (pinfo->fd->lnk_t) {
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case WTAP_ENCAP_WFLEET_HDLC:
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case WTAP_ENCAP_CHDLC_WITH_PHDR:
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case WTAP_ENCAP_PPP_WITH_PHDR:
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case WTAP_ENCAP_SDLC:
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case WTAP_ENCAP_BLUETOOTH_H4_WITH_PHDR:
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pinfo->p2p_dir = pinfo->pseudo_header->p2p.sent ?
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P2P_DIR_SENT : P2P_DIR_RECV;
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break;
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case WTAP_ENCAP_BLUETOOTH_HCI:
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pinfo->p2p_dir = pinfo->pseudo_header->bthci.sent;
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break;
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case WTAP_ENCAP_LAPB:
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case WTAP_ENCAP_FRELAY_WITH_PHDR:
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pinfo->p2p_dir =
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(pinfo->pseudo_header->x25.flags & FROM_DCE) ?
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P2P_DIR_RECV : P2P_DIR_SENT;
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break;
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case WTAP_ENCAP_ISDN:
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pinfo->p2p_dir = pinfo->pseudo_header->isdn.uton ?
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P2P_DIR_SENT : P2P_DIR_RECV;
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break;
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case WTAP_ENCAP_LINUX_LAPD:
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pinfo->p2p_dir = (pinfo->pseudo_header->lapd.pkttype == 3 ||
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pinfo->pseudo_header->lapd.pkttype == 4) ?
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P2P_DIR_SENT : P2P_DIR_RECV;
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break;
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case WTAP_ENCAP_MTP2_WITH_PHDR:
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pinfo->p2p_dir = pinfo->pseudo_header->mtp2.sent ?
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P2P_DIR_SENT : P2P_DIR_RECV;
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pinfo->link_number = pinfo->pseudo_header->mtp2.link_number;
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pinfo->annex_a_used = pinfo->pseudo_header->mtp2.annex_a_used;
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break;
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case WTAP_ENCAP_GSM_UM:
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pinfo->p2p_dir = pinfo->pseudo_header->gsm_um.uplink ?
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P2P_DIR_SENT : P2P_DIR_RECV;
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break;
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}
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}
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/* if FRAME is not referenced from any filters we dont need to worry about
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generating any tree items. */
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if(!proto_field_is_referenced(tree, proto_frame)) {
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tree=NULL;
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if(pinfo->fd->abs_ts.nsecs < 0 || pinfo->fd->abs_ts.nsecs >= 1000000000)
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expert_add_info_format(pinfo, NULL, PI_MALFORMED, PI_WARN,
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"Arrival Time: Fractional second out of range (0-1000000000)");
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} else {
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proto_tree *fh_tree;
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gboolean old_visible;
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/* Put in frame header information. */
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cap_len = tvb_length(tvb);
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frame_len = tvb_reported_length(tvb);
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cap_plurality = plurality(cap_len, "", "s");
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frame_plurality = plurality(frame_len, "", "s");
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ti = proto_tree_add_protocol_format(tree, proto_frame, tvb, 0, -1,
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"Frame %u: %u byte%s on wire (%u bits), %u byte%s captured (%u bits)",
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pinfo->fd->num, frame_len, frame_plurality, frame_len * 8,
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cap_len, cap_plurality, cap_len * 8);
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fh_tree = proto_item_add_subtree(ti, ett_frame);
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ts = pinfo->fd->abs_ts;
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proto_tree_add_time(fh_tree, hf_frame_arrival_time, tvb,
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0, 0, &ts);
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if(ts.nsecs < 0 || ts.nsecs >= 1000000000) {
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item = proto_tree_add_none_format(fh_tree, hf_frame_time_invalid, tvb,
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0, 0, "Arrival Time: Fractional second %09ld is invalid, the valid range is 0-1000000000", (long) ts.nsecs);
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PROTO_ITEM_SET_GENERATED(item);
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expert_add_info_format(pinfo, item, PI_MALFORMED, PI_WARN, "Arrival Time: Fractional second out of range (0-1000000000)");
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}
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if(generate_epoch_time) {
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proto_tree_add_time(fh_tree, hf_frame_arrival_time_epoch, tvb,
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0, 0, &ts);
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}
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ts = pinfo->fd->del_cap_ts;
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item = proto_tree_add_time(fh_tree, hf_frame_time_delta, tvb,
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0, 0, &ts);
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PROTO_ITEM_SET_GENERATED(item);
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ts = pinfo->fd->del_dis_ts;
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item = proto_tree_add_time(fh_tree, hf_frame_time_delta_displayed, tvb,
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0, 0, &ts);
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PROTO_ITEM_SET_GENERATED(item);
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ts = pinfo->fd->rel_ts;
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item = proto_tree_add_time(fh_tree, hf_frame_time_relative, tvb,
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0, 0, &ts);
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PROTO_ITEM_SET_GENERATED(item);
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if(pinfo->fd->flags.ref_time){
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ti = proto_tree_add_item(fh_tree, hf_frame_time_reference, tvb, 0, 0, FALSE);
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PROTO_ITEM_SET_GENERATED(ti);
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}
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proto_tree_add_uint(fh_tree, hf_frame_number, tvb,
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0, 0, pinfo->fd->num);
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proto_tree_add_uint_format(fh_tree, hf_frame_len, tvb,
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0, 0, frame_len, "Frame Length: %u byte%s (%u bits)",
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frame_len, frame_plurality, frame_len * 8);
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proto_tree_add_uint_format(fh_tree, hf_frame_capture_len, tvb,
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0, 0, cap_len, "Capture Length: %u byte%s (%u bits)",
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cap_len, cap_plurality, cap_len * 8);
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if (generate_md5_hash) {
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const guint8 *cp;
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md5_state_t md_ctx;
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md5_byte_t digest[16];
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gchar *digest_string;
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cp = tvb_get_ptr(tvb, 0, cap_len);
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md5_init(&md_ctx);
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md5_append(&md_ctx, cp, cap_len);
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md5_finish(&md_ctx, digest);
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digest_string = bytestring_to_str(digest, 16, '\0');
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ti = proto_tree_add_string(fh_tree, hf_frame_md5_hash, tvb, 0, 0, digest_string);
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PROTO_ITEM_SET_GENERATED(ti);
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}
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ti = proto_tree_add_boolean(fh_tree, hf_frame_marked, tvb, 0, 0,pinfo->fd->flags.marked);
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PROTO_ITEM_SET_GENERATED(ti);
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ti = proto_tree_add_boolean(fh_tree, hf_frame_ignored, tvb, 0, 0,pinfo->fd->flags.ignored);
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PROTO_ITEM_SET_GENERATED(ti);
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if(proto_field_is_referenced(tree, hf_frame_protocols)) {
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/* we are going to be using proto_item_append_string() on
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* hf_frame_protocols, and we must therefore disable the
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* TRY_TO_FAKE_THIS_ITEM() optimisation for the tree by
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* setting it as visible.
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*
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* See proto.h for details.
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*/
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old_visible = proto_tree_set_visible(fh_tree, TRUE);
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ti = proto_tree_add_string(fh_tree, hf_frame_protocols, tvb, 0, 0, "");
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PROTO_ITEM_SET_GENERATED(ti);
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proto_tree_set_visible(fh_tree, old_visible);
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pinfo->layer_names = g_string_new("");
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}
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else
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pinfo->layer_names = NULL;
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/* Check for existences of P2P pseudo header */
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if (pinfo->p2p_dir != P2P_DIR_UNKNOWN) {
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proto_tree_add_int(fh_tree, hf_frame_p2p_dir, tvb,
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0, 0, pinfo->p2p_dir);
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}
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/* Check for existences of MTP2 link number */
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if ((pinfo->pseudo_header != NULL ) && (pinfo->fd->lnk_t == WTAP_ENCAP_MTP2_WITH_PHDR)) {
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proto_tree_add_uint(fh_tree, hf_link_number, tvb,
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0, 0, pinfo->link_number);
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}
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if (show_file_off) {
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proto_tree_add_int64_format(fh_tree, hf_frame_file_off, tvb,
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0, 0, pinfo->fd->file_off,
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"File Offset: %" G_GINT64_MODIFIER "d (0x%" G_GINT64_MODIFIER "x)",
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pinfo->fd->file_off, pinfo->fd->file_off);
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}
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if(pinfo->fd->color_filter != NULL) {
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const color_filter_t *color_filter = pinfo->fd->color_filter;
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item = proto_tree_add_string(fh_tree, hf_frame_color_filter_name, tvb,
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0, 0, color_filter->filter_name);
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PROTO_ITEM_SET_GENERATED(item);
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item = proto_tree_add_string(fh_tree, hf_frame_color_filter_text, tvb,
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0, 0, color_filter->filter_text);
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PROTO_ITEM_SET_GENERATED(item);
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}
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}
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if (pinfo->fd->flags.ignored) {
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/* Ignored package, stop handling here */
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col_set_str(pinfo->cinfo, COL_INFO, "<Ignored>");
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proto_tree_add_text (tree, tvb, 0, -1, "This frame is marked as ignored");
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return;
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}
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/* Portable Exception Handling to trap Wireshark specific exceptions like BoundsError exceptions */
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TRY {
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#ifdef _MSC_VER
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/* Win32: Visual-C Structured Exception Handling (SEH) to trap hardware exceptions like memory access violations */
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/* (a running debugger will be called before the except part below) */
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__try {
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#endif
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if ((force_docsis_encap) && (docsis_handle)) {
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call_dissector(docsis_handle, tvb, pinfo, parent_tree);
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} else {
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if (!dissector_try_uint(wtap_encap_dissector_table, pinfo->fd->lnk_t,
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tvb, pinfo, parent_tree)) {
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "UNKNOWN");
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col_add_fstr(pinfo->cinfo, COL_INFO, "WTAP_ENCAP = %d",
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pinfo->fd->lnk_t);
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call_dissector(data_handle,tvb, pinfo, parent_tree);
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}
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}
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#ifdef _MSC_VER
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} __except(TRUE /* handle all exceptions */) {
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switch(GetExceptionCode()) {
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case(STATUS_ACCESS_VIOLATION):
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show_exception(tvb, pinfo, parent_tree, DissectorError,
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"STATUS_ACCESS_VIOLATION: dissector accessed an invalid memory address");
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break;
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case(STATUS_INTEGER_DIVIDE_BY_ZERO):
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show_exception(tvb, pinfo, parent_tree, DissectorError,
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"STATUS_INTEGER_DIVIDE_BY_ZERO: dissector tried an integer division by zero");
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break;
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case(STATUS_STACK_OVERFLOW):
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show_exception(tvb, pinfo, parent_tree, DissectorError,
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"STATUS_STACK_OVERFLOW: dissector overflowed the stack (e.g. endless loop)");
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/* XXX - this will have probably corrupted the stack, which makes problems later in the exception code */
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break;
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/* XXX - add other hardware exception codes as required */
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default:
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show_exception(tvb, pinfo, parent_tree, DissectorError,
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g_strdup_printf("dissector caused an unknown exception: 0x%x", GetExceptionCode()));
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}
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}
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#endif
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}
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CATCH(OutOfMemoryError) {
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RETHROW;
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}
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CATCH_ALL {
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show_exception(tvb, pinfo, parent_tree, EXCEPT_CODE, GET_MESSAGE);
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}
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ENDTRY;
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if (tree && pinfo->layer_names) {
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proto_item_append_string(ti, pinfo->layer_names->str);
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g_string_free(pinfo->layer_names, TRUE);
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pinfo->layer_names = NULL;
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}
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/* Call postdissectors if we have any (while trying to avoid another
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* TRY/CATCH)
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*/
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if (have_postdissector()) {
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TRY {
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#ifdef _MSC_VER
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/* Win32: Visual-C Structured Exception Handling (SEH) to trap hardware exceptions like memory access violations */
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/* (a running debugger will be called before the except part below) */
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__try {
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#endif
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call_all_postdissectors(tvb, pinfo, parent_tree);
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#ifdef _MSC_VER
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} __except(TRUE /* handle all exceptions */) {
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switch(GetExceptionCode()) {
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case(STATUS_ACCESS_VIOLATION):
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show_exception(tvb, pinfo, parent_tree, DissectorError,
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"STATUS_ACCESS_VIOLATION: dissector accessed an invalid memory address");
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break;
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case(STATUS_INTEGER_DIVIDE_BY_ZERO):
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show_exception(tvb, pinfo, parent_tree, DissectorError,
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"STATUS_INTEGER_DIVIDE_BY_ZERO: dissector tried an integer division by zero");
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break;
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case(STATUS_STACK_OVERFLOW):
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show_exception(tvb, pinfo, parent_tree, DissectorError,
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"STATUS_STACK_OVERFLOW: dissector overflowed the stack (e.g. endless loop)");
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/* XXX - this will have probably corrupted the stack, which makes problems later in the exception code */
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break;
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/* XXX - add other hardware exception codes as required */
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default:
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show_exception(tvb, pinfo, parent_tree, DissectorError,
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g_strdup_printf("dissector caused an unknown exception: 0x%x", GetExceptionCode()));
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}
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}
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#endif
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}
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CATCH(OutOfMemoryError) {
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RETHROW;
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}
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CATCH_ALL {
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show_exception(tvb, pinfo, parent_tree, EXCEPT_CODE, GET_MESSAGE);
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}
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ENDTRY;
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}
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tap_queue_packet(frame_tap, pinfo, NULL);
|
|
|
|
|
|
if (frame_end_routines) {
|
|
g_slist_foreach(frame_end_routines, &call_frame_end_routine, NULL);
|
|
g_slist_free(frame_end_routines);
|
|
frame_end_routines = NULL;
|
|
}
|
|
}
|
|
|
|
void
|
|
show_exception(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
|
|
unsigned long exception, const char *exception_message)
|
|
{
|
|
static const char dissector_error_nomsg[] =
|
|
"Dissector writer didn't bother saying what the error was";
|
|
proto_item *item;
|
|
|
|
|
|
switch (exception) {
|
|
|
|
case ScsiBoundsError:
|
|
col_append_str(pinfo->cinfo, COL_INFO, "[SCSI transfer limited due to allocation_length too small]");
|
|
/*item =*/ proto_tree_add_protocol_format(tree, proto_short, tvb, 0, 0,
|
|
"SCSI transfer limited due to allocation_length too small: %s truncated]", pinfo->current_proto);
|
|
/* Don't record ScsiBoundsError exceptions as expert events - they merely
|
|
* reflect a normal SCSI condition.
|
|
* (any case where it's caused by something else is a bug). */
|
|
/* expert_add_info_format(pinfo, item, PI_MALFORMED, PI_ERROR, "Packet size limited");*/
|
|
break;
|
|
|
|
case BoundsError:
|
|
col_append_str(pinfo->cinfo, COL_INFO, "[Packet size limited during capture]");
|
|
/*item =*/ proto_tree_add_protocol_format(tree, proto_short, tvb, 0, 0,
|
|
"[Packet size limited during capture: %s truncated]", pinfo->current_proto);
|
|
/* Don't record BoundsError exceptions as expert events - they merely
|
|
* reflect a capture done with a snapshot length too short to capture
|
|
* all of the packet
|
|
* (any case where it's caused by something else is a bug). */
|
|
/* expert_add_info_format(pinfo, item, PI_MALFORMED, PI_ERROR, "Packet size limited");*/
|
|
break;
|
|
|
|
case ReportedBoundsError:
|
|
show_reported_bounds_error(tvb, pinfo, tree);
|
|
break;
|
|
|
|
case DissectorError:
|
|
col_append_fstr(pinfo->cinfo, COL_INFO,
|
|
"[Dissector bug, protocol %s: %s]",
|
|
pinfo->current_proto,
|
|
exception_message == NULL ?
|
|
dissector_error_nomsg : exception_message);
|
|
item = proto_tree_add_protocol_format(tree, proto_malformed, tvb, 0, 0,
|
|
"[Dissector bug, protocol %s: %s]",
|
|
pinfo->current_proto,
|
|
exception_message == NULL ?
|
|
dissector_error_nomsg : exception_message);
|
|
g_warning("Dissector bug, protocol %s, in packet %u: %s",
|
|
pinfo->current_proto, pinfo->fd->num,
|
|
exception_message == NULL ?
|
|
dissector_error_nomsg : exception_message);
|
|
expert_add_info_format(pinfo, item, PI_MALFORMED, PI_ERROR,
|
|
"%s",
|
|
exception_message == NULL ?
|
|
dissector_error_nomsg : exception_message);
|
|
break;
|
|
|
|
default:
|
|
/* XXX - we want to know, if an unknown exception passed until here, don't we? */
|
|
g_assert_not_reached();
|
|
}
|
|
}
|
|
|
|
void
|
|
show_reported_bounds_error(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
proto_item *item;
|
|
|
|
if (pinfo->fragmented) {
|
|
/*
|
|
* We were dissecting an unreassembled fragmented
|
|
* packet when the exception was thrown, so the
|
|
* problem isn't that the dissector expected
|
|
* something but it wasn't in the packet, the
|
|
* problem is that the dissector expected something
|
|
* but it wasn't in the fragment we dissected.
|
|
*/
|
|
col_append_fstr(pinfo->cinfo, COL_INFO,
|
|
"[Unreassembled Packet%s] ",
|
|
pinfo->noreassembly_reason);
|
|
item = proto_tree_add_protocol_format(tree, proto_unreassembled,
|
|
tvb, 0, 0, "[Unreassembled Packet%s: %s]",
|
|
pinfo->noreassembly_reason, pinfo->current_proto);
|
|
expert_add_info_format(pinfo, item, PI_REASSEMBLE, PI_WARN, "Unreassembled Packet (Exception occurred)");
|
|
} else {
|
|
col_append_str(pinfo->cinfo, COL_INFO,
|
|
"[Malformed Packet]");
|
|
item = proto_tree_add_protocol_format(tree, proto_malformed,
|
|
tvb, 0, 0, "[Malformed Packet: %s]", pinfo->current_proto);
|
|
expert_add_info_format(pinfo, item, PI_MALFORMED, PI_ERROR, "Malformed Packet (Exception occurred)");
|
|
}
|
|
}
|
|
|
|
void
|
|
proto_register_frame(void)
|
|
{
|
|
static hf_register_info hf[] = {
|
|
{ &hf_frame_arrival_time,
|
|
{ "Arrival Time", "frame.time", FT_ABSOLUTE_TIME, ABSOLUTE_TIME_LOCAL, NULL, 0x0,
|
|
"Absolute time when this frame was captured", HFILL }},
|
|
|
|
{ &hf_frame_arrival_time_epoch,
|
|
{ "Epoch Time", "frame.time_epoch", FT_RELATIVE_TIME, BASE_NONE, NULL, 0x0,
|
|
"Epoch time when this frame was captured", HFILL }},
|
|
|
|
{ &hf_frame_time_invalid,
|
|
{ "Arrival Timestamp invalid", "frame.time_invalid", FT_NONE, BASE_NONE, NULL, 0x0,
|
|
"The timestamp from the capture is out of the valid range", HFILL }},
|
|
|
|
{ &hf_frame_time_delta,
|
|
{ "Time delta from previous captured frame", "frame.time_delta", FT_RELATIVE_TIME, BASE_NONE, NULL,
|
|
0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_frame_time_delta_displayed,
|
|
{ "Time delta from previous displayed frame", "frame.time_delta_displayed", FT_RELATIVE_TIME, BASE_NONE, NULL,
|
|
0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_frame_time_relative,
|
|
{ "Time since reference or first frame", "frame.time_relative", FT_RELATIVE_TIME, BASE_NONE, NULL,
|
|
0x0,
|
|
"Time relative to time reference or first frame", HFILL }},
|
|
|
|
{ &hf_frame_time_reference,
|
|
{ "This is a Time Reference frame", "frame.ref_time", FT_NONE, BASE_NONE, NULL, 0x0,
|
|
"This frame is a Time Reference frame", HFILL }},
|
|
|
|
{ &hf_frame_number,
|
|
{ "Frame Number", "frame.number", FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_frame_len,
|
|
{ "Frame length on the wire", "frame.len", FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_frame_capture_len,
|
|
{ "Frame length stored into the capture file", "frame.cap_len", FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_frame_md5_hash,
|
|
{ "Frame MD5 Hash", "frame.md5_hash", FT_STRING, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_frame_p2p_dir,
|
|
{ "Point-to-Point Direction", "frame.p2p_dir", FT_INT8, BASE_DEC, VALS(p2p_dirs), 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_link_number,
|
|
{ "Link Number", "frame.link_nr", FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_frame_file_off,
|
|
{ "File Offset", "frame.file_off", FT_INT64, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_frame_marked,
|
|
{ "Frame is marked", "frame.marked", FT_BOOLEAN, BASE_NONE, NULL, 0x0,
|
|
"Frame is marked in the GUI", HFILL }},
|
|
|
|
{ &hf_frame_ignored,
|
|
{ "Frame is ignored", "frame.ignored", FT_BOOLEAN, BASE_NONE, NULL, 0x0,
|
|
"Frame is ignored by the dissectors", HFILL }},
|
|
|
|
{ &hf_frame_protocols,
|
|
{ "Protocols in frame", "frame.protocols", FT_STRING, BASE_NONE, NULL, 0x0,
|
|
"Protocols carried by this frame", HFILL }},
|
|
|
|
{ &hf_frame_color_filter_name,
|
|
{ "Coloring Rule Name", "frame.coloring_rule.name", FT_STRING, BASE_NONE, NULL, 0x0,
|
|
"The frame matched the coloring rule with this name", HFILL }},
|
|
|
|
{ &hf_frame_color_filter_text,
|
|
{ "Coloring Rule String", "frame.coloring_rule.string", FT_STRING, BASE_NONE, NULL, 0x0,
|
|
"The frame matched this coloring rule string", HFILL }}
|
|
};
|
|
static gint *ett[] = {
|
|
&ett_frame
|
|
};
|
|
module_t *frame_module;
|
|
|
|
wtap_encap_dissector_table = register_dissector_table("wtap_encap",
|
|
"Wiretap encapsulation type", FT_UINT32, BASE_DEC);
|
|
|
|
proto_frame = proto_register_protocol("Frame", "Frame", "frame");
|
|
proto_register_field_array(proto_frame, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
register_dissector("frame",dissect_frame,proto_frame);
|
|
|
|
/* You can't disable dissection of "Frame", as that would be
|
|
tantamount to not doing any dissection whatsoever. */
|
|
proto_set_cant_toggle(proto_frame);
|
|
|
|
proto_short = proto_register_protocol("Short Frame", "Short frame", "short");
|
|
proto_malformed = proto_register_protocol("Malformed Packet",
|
|
"Malformed packet", "malformed");
|
|
proto_unreassembled = proto_register_protocol(
|
|
"Unreassembled Fragmented Packet",
|
|
"Unreassembled fragmented packet", "unreassembled");
|
|
|
|
/* "Short Frame", "Malformed Packet", and "Unreassembled Fragmented
|
|
Packet" aren't really protocols, they're error indications;
|
|
disabling them makes no sense. */
|
|
proto_set_cant_toggle(proto_short);
|
|
proto_set_cant_toggle(proto_malformed);
|
|
proto_set_cant_toggle(proto_unreassembled);
|
|
|
|
/* Our preferences */
|
|
frame_module = prefs_register_protocol(proto_frame, NULL);
|
|
prefs_register_bool_preference(frame_module, "show_file_off",
|
|
"Show File Offset", "Show offset of frame in capture file", &show_file_off);
|
|
prefs_register_bool_preference(frame_module, "force_docsis_encap",
|
|
"Treat all frames as DOCSIS frames", "Treat all frames as DOCSIS Frames", &force_docsis_encap);
|
|
prefs_register_bool_preference(frame_module, "generate_md5_hash",
|
|
"Generate an MD5 hash of each frame",
|
|
"Whether or not MD5 hashes should be generated for each frame, useful for finding duplicate frames.",
|
|
&generate_md5_hash);
|
|
prefs_register_bool_preference(frame_module, "generate_epoch_time",
|
|
"Generate an epoch time entry for each frame",
|
|
"Whether or not an Epoch time entry should be generated for each frame.",
|
|
&generate_epoch_time);
|
|
|
|
frame_tap=register_tap("frame");
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_frame(void)
|
|
{
|
|
data_handle = find_dissector("data");
|
|
docsis_handle = find_dissector("docsis");
|
|
}
|