![Bill Meier](/assets/img/avatar_default.png)
Also: Significant code rework including: - Fix bug wherein a timestamp was incorrectly reported as being an Error; - Replace many proto_tree_add_text()/proto_item_set_text() sequences each by a single proto_tree_add_text(). - remove unneeded #include <string.h> - Whitespace clanup including replacing mixed space/tab indentation by spaces. svn path=/trunk/; revision=36437
2564 lines
102 KiB
C
2564 lines
102 KiB
C
/*
|
|
* Copyright 2006-2007 The MITRE Corporation.
|
|
* All Rights Reserved.
|
|
* Approved for Public Release; Distribution Unlimited.
|
|
* Tracking Number 07-0090.
|
|
*
|
|
* The US Government will not be charged any license fee and/or royalties
|
|
* related to this software. Neither name of The MITRE Corporation; nor the
|
|
* names of its contributors may be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* $Id$
|
|
*
|
|
* Wireshark - Network traffic analyzer
|
|
* By Gerald Combs <gerald@wireshark.org>
|
|
* Copyright 1998 Gerald Combs
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*
|
|
* Specification reference:
|
|
* Ref http://www.ietf.org/rfc/rfc5050.txt?number=5050
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <glib.h>
|
|
|
|
#include <epan/packet.h>
|
|
#include <epan/prefs.h>
|
|
#include <epan/reassemble.h>
|
|
#include <epan/expert.h>
|
|
#include "packet-dtn.h"
|
|
|
|
void proto_reg_handoff_bundle(void);
|
|
static int dissect_primary_header(packet_info *pinfo, proto_tree *primary_tree, tvbuff_t *tvb);
|
|
static int dissect_admin_record(proto_tree *primary_tree, tvbuff_t *tvb, int offset);
|
|
static int dissect_payload_header(proto_tree *tree, tvbuff_t *tvb, int bundle_offset, gboolean *lastheader);
|
|
static int display_metadata_block(proto_tree *tree, tvbuff_t *tvb, int bundle_offset, gboolean *lastheader);
|
|
static int dissect_contact_header(tvbuff_t *tvb, packet_info *pinfo,
|
|
proto_tree *conv_tree, proto_item *conv_item);
|
|
static int dissect_tcp_convergence_data_header(tvbuff_t *tvb, proto_tree *tree);
|
|
static int dissect_version_4_primary_header(packet_info *pinfo,
|
|
proto_tree *primary_tree, tvbuff_t *tvb);
|
|
static int dissect_version_5_and_6_primary_header(packet_info *pinfo,
|
|
proto_tree *primary_tree, tvbuff_t *tvb);
|
|
static int add_sdnv_to_tree(proto_tree *tree, tvbuff_t *tvb, int offset, const char *field_id);
|
|
static int add_dtn_time_to_tree(proto_tree *tree, tvbuff_t *tvb, int offset, const char *field_id);
|
|
static int add_sdnv_time_to_tree(proto_tree *tree, tvbuff_t *tvb, int offset, const char *field_id);
|
|
|
|
/* For Reassembling TCP Convergence Layer segments */
|
|
static GHashTable *msg_fragment_table = NULL;
|
|
static GHashTable *msg_reassembled_table = NULL;
|
|
|
|
static char magic[] = {'d', 't', 'n', '!'};
|
|
|
|
static int proto_bundle = -1;
|
|
static int proto_tcp_conv = -1;
|
|
static int hf_bundle_pdu_version = -1;
|
|
|
|
/* TCP Convergence Header Variables */
|
|
static int hf_contact_hdr_version = -1;
|
|
static int hf_contact_hdr_flags = -1;
|
|
static int hf_contact_hdr_keep_alive = -1;
|
|
static int hf_contact_hdr_flags_ack_req = -1;
|
|
static int hf_contact_hdr_flags_frag_enable = -1;
|
|
static int hf_contact_hdr_flags_nak = -1;
|
|
|
|
/* TCP Convergence Data Header Variables */
|
|
static int hf_tcp_convergence_data_procflags = -1;
|
|
static int hf_tcp_convergence_data_procflags_start = -1;
|
|
static int hf_tcp_convergence_data_procflags_end = -1;
|
|
|
|
/* TCP Convergence Shutdown Header Variables */
|
|
static int hf_tcp_convergence_shutdown_flags = -1;
|
|
static int hf_tcp_convergence_shutdown_flags_reason = -1;
|
|
static int hf_tcp_convergence_shutdown_flags_delay = -1;
|
|
static int hf_tcp_convergence_shutdown_reason = -1;
|
|
static int hf_tcp_convergence_shutdown_delay = -1;
|
|
|
|
/*TCP Convergence Layer Reassembly boilerplate*/
|
|
static int hf_msg_fragments = -1;
|
|
static int hf_msg_fragment = -1;
|
|
static int hf_msg_fragment_overlap = -1;
|
|
static int hf_msg_fragment_overlap_conflicts = -1;
|
|
static int hf_msg_fragment_multiple_tails = -1;
|
|
static int hf_msg_fragment_too_long_fragment = -1;
|
|
static int hf_msg_fragment_error = -1;
|
|
static int hf_msg_fragment_count = -1;
|
|
static int hf_msg_reassembled_in = -1;
|
|
static int hf_msg_reassembled_length = -1;
|
|
|
|
/* Primary Header Processing Flag Variables */
|
|
static guint8 pri_hdr_procflags; /*This is global to allow processing Payload Header*/
|
|
|
|
static int hf_bundle_procflags = -1;
|
|
static int hf_bundle_procflags_fragment = -1;
|
|
static int hf_bundle_procflags_admin = -1;
|
|
static int hf_bundle_procflags_dont_fragment = -1;
|
|
static int hf_bundle_procflags_cust_xfer_req = -1;
|
|
static int hf_bundle_procflags_dest_singleton = -1;
|
|
static int hf_bundle_procflags_application_ack = -1;
|
|
|
|
/* Additions for Version 5 */
|
|
static int hf_bundle_control_flags = -1;
|
|
static int hf_bundle_procflags_general = -1;
|
|
static int hf_bundle_procflags_cos = -1;
|
|
static int hf_bundle_procflags_status = -1;
|
|
|
|
/* Primary Header COS Flag Variables */
|
|
static int hf_bundle_cosflags = -1;
|
|
static int hf_bundle_cosflags_priority = -1;
|
|
|
|
/* Primary Header Status Report Request Flag Variables */
|
|
static int hf_bundle_srrflags = -1;
|
|
static int hf_bundle_srrflags_report_receipt = -1;
|
|
static int hf_bundle_srrflags_report_cust_accept = -1;
|
|
static int hf_bundle_srrflags_report_forward = -1;
|
|
static int hf_bundle_srrflags_report_delivery = -1;
|
|
static int hf_bundle_srrflags_report_deletion = -1;
|
|
static int hf_bundle_srrflags_report_ack = -1;
|
|
|
|
/* Primary Header Length Fields*/
|
|
static int hf_bundle_primary_header_len = -1;
|
|
static int hf_bundle_dest_scheme_offset = -1;
|
|
static int hf_bundle_dest_ssp_offset = -1;
|
|
static int hf_bundle_source_scheme_offset = -1;
|
|
static int hf_bundle_source_ssp_offset = -1;
|
|
static int hf_bundle_report_scheme_offset = -1;
|
|
static int hf_bundle_report_ssp_offset = -1;
|
|
static int hf_bundle_cust_scheme_offset = -1;
|
|
static int hf_bundle_cust_ssp_offset = -1;
|
|
|
|
/* Dictionary EIDs */
|
|
static int hf_bundle_dest_scheme = -1;
|
|
static int hf_bundle_dest_ssp = -1;
|
|
static int hf_bundle_source_scheme = -1;
|
|
static int hf_bundle_source_ssp = -1;
|
|
static int hf_bundle_report_scheme = -1;
|
|
static int hf_bundle_report_ssp = -1;
|
|
static int hf_bundle_custodian_scheme = -1;
|
|
static int hf_bundle_custodian_ssp = -1;
|
|
|
|
/* Remaining Primary Header Fields */
|
|
static int hf_bundle_creation_timestamp = -1;
|
|
static int hf_bundle_lifetime = -1;
|
|
|
|
/* Secondary Header Processing Flag Variables */
|
|
static int hf_bundle_payload_flags = -1;
|
|
static int hf_bundle_payload_flags_replicate_hdr = -1;
|
|
static int hf_bundle_payload_flags_xmit_report = -1;
|
|
static int hf_bundle_payload_flags_discard_on_fail = -1;
|
|
static int hf_bundle_payload_flags_last_header = -1;
|
|
|
|
/* Block Processing Control Flag Variables (Version 5) */
|
|
static int hf_block_control_flags = -1;
|
|
static int hf_block_control_replicate = -1;
|
|
static int hf_block_control_transmit_status = -1;
|
|
static int hf_block_control_delete_bundle = -1;
|
|
static int hf_block_control_last_block = -1;
|
|
static int hf_block_control_discard_block = -1;
|
|
static int hf_block_control_not_processed = -1;
|
|
static int hf_block_control_eid_reference = -1;
|
|
|
|
/* Administrative Record Variables */
|
|
static int hf_bundle_admin_statflags = -1;
|
|
static int hf_bundle_admin_rcvd = -1;
|
|
static int hf_bundle_admin_accepted = -1;
|
|
static int hf_bundle_admin_forwarded = -1;
|
|
static int hf_bundle_admin_delivered = -1;
|
|
static int hf_bundle_admin_deleted = -1;
|
|
static int hf_bundle_admin_acked = -1;
|
|
static int hf_bundle_admin_receipt_time = -1;
|
|
static int hf_bundle_admin_accept_time = -1;
|
|
static int hf_bundle_admin_forward_time = -1;
|
|
static int hf_bundle_admin_delivery_time = -1;
|
|
static int hf_bundle_admin_delete_time = -1;
|
|
static int hf_bundle_admin_ack_time = -1;
|
|
static int hf_bundle_admin_timestamp_copy = -1;
|
|
static int hf_bundle_admin_signal_time = -1;
|
|
|
|
/* Tree Node Variables */
|
|
static gint ett_bundle = -1;
|
|
static gint ett_tcp_conv = -1;
|
|
static gint ett_tcp_conv_hdr = -1;
|
|
static gint ett_conv_flags = -1;
|
|
static gint ett_shutdown_flags = -1;
|
|
static gint ett_msg_fragment = -1;
|
|
static gint ett_msg_fragments = -1;
|
|
static gint ett_bundle_hdr = -1;
|
|
static gint ett_primary_hdr = -1;
|
|
static gint ett_proc_flags = -1;
|
|
static gint ett_gen_flags = -1;
|
|
static gint ett_cos_flags = -1;
|
|
static gint ett_srr_flags = -1;
|
|
static gint ett_dictionary = -1;
|
|
static gint ett_payload_hdr = -1;
|
|
static gint ett_payload_flags = -1;
|
|
static gint ett_block_flags = -1;
|
|
static gint ett_contact_hdr_flags = -1;
|
|
static gint ett_admin_record = -1;
|
|
static gint ett_admin_rec_status = -1;
|
|
static gint ett_metadata_hdr = -1;
|
|
|
|
static guint bundle_tcp_port = 4556;
|
|
static guint bundle_udp_port = 4556;
|
|
|
|
static const value_string custody_signal_reason_codes[] = {
|
|
{0x3, "Redundant Reception"},
|
|
{0x4, "Depleted Storage"},
|
|
{0x5, "Destination Endpoint ID Unintelligible"},
|
|
{0x6, "No Known Route to Destination"},
|
|
{0x7, "No Timely Contact with Next Node on Route"},
|
|
{0x8, "Header Unintelligible"},
|
|
{0, NULL}
|
|
};
|
|
|
|
static const value_string status_report_reason_codes[] = {
|
|
{0x1, "Lifetime Expired"},
|
|
{0x2, "Forwarded over Unidirectional Link"},
|
|
{0x3, "Transmission Cancelled"},
|
|
{0x4, "Depleted Storage"},
|
|
{0x5, "Destination Endpoint ID Unintelligible"},
|
|
{0x6, "No Known Route to Destination"},
|
|
{0x7, "No Timely Contact with Next Node on Route"},
|
|
{0x8, "Header Unintelligible"},
|
|
{0, NULL}
|
|
};
|
|
|
|
static const fragment_items msg_frag_items = {
|
|
/*Fragment subtrees*/
|
|
&ett_msg_fragment,
|
|
&ett_msg_fragments,
|
|
/*Fragment Fields*/
|
|
&hf_msg_fragments,
|
|
&hf_msg_fragment,
|
|
&hf_msg_fragment_overlap,
|
|
&hf_msg_fragment_overlap_conflicts,
|
|
&hf_msg_fragment_multiple_tails,
|
|
&hf_msg_fragment_too_long_fragment,
|
|
&hf_msg_fragment_error,
|
|
&hf_msg_fragment_count,
|
|
/*Reassembled in field*/
|
|
&hf_msg_reassembled_in,
|
|
/*Reassembled length field*/
|
|
&hf_msg_reassembled_length,
|
|
/*Tag*/
|
|
"Message fragments"
|
|
};
|
|
|
|
static void
|
|
dissect_tcp_bundle(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
|
|
int buffer_size; /*Number of bytes in buffer that can be processed*/
|
|
int frame_offset; /*To handle the case of > 1 bundle in an Ethernet Frame*/
|
|
proto_tree *conv_proto_tree = NULL;
|
|
|
|
buffer_size = tvb_reported_length(tvb);
|
|
frame_offset = 0;
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "Bundle");
|
|
col_clear(pinfo->cinfo,COL_INFO); /* Clear out stuff in the info column */
|
|
|
|
while(frame_offset < buffer_size) {
|
|
guint8 conv_hdr;
|
|
|
|
conv_hdr = tvb_get_guint8(tvb, frame_offset);
|
|
if((conv_hdr & TCP_CONVERGENCE_TYPE_MASK) == TCP_CONVERGENCE_DATA_SEGMENT) {
|
|
fragment_data *frag_msg;
|
|
tvbuff_t *new_tvb;
|
|
proto_tree *bundle_tree;
|
|
proto_tree *conv_proto_tree;
|
|
proto_item *ci;
|
|
int segment_length;
|
|
gboolean more_frags;
|
|
int sdnv_length;
|
|
int convergence_hdr_size;
|
|
int fixed;
|
|
|
|
/* Only Start and End flags (bits 0 & 1) are valid in Data Segment */
|
|
if((conv_hdr & ~(TCP_CONVERGENCE_TYPE_MASK | TCP_CONVERGENCE_DATA_FLAGS)) != 0) {
|
|
col_set_str(pinfo->cinfo, COL_INFO, "Invalid TCP CL Data Segment Flags");
|
|
return;
|
|
}
|
|
fixed = 1;
|
|
segment_length = evaluate_sdnv(tvb, fixed + frame_offset, &sdnv_length);
|
|
if(segment_length < 0) {
|
|
col_set_str(pinfo->cinfo, COL_INFO, "Protocol Error (Length)");
|
|
return;
|
|
}
|
|
convergence_hdr_size = sdnv_length + fixed;
|
|
if((buffer_size - frame_offset - convergence_hdr_size) < segment_length) {
|
|
/*Segment not complete -- wait for the rest of it*/
|
|
pinfo->desegment_len =
|
|
segment_length - (buffer_size - frame_offset
|
|
- convergence_hdr_size);
|
|
pinfo->desegment_offset = frame_offset;
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* 1/11/2006 - If I got here, I should have a complete convergence layer
|
|
* "segment" beginning at frame_offset. However that might not be a
|
|
* complete bundle. Or there might be a complete bundle plus one or more
|
|
* additional convergence layer headers.
|
|
*/
|
|
|
|
bundle_tree = NULL;
|
|
new_tvb = NULL;
|
|
if((conv_hdr & TCP_CONVERGENCE_DATA_END_FLAG) == TCP_CONVERGENCE_DATA_END_FLAG) {
|
|
more_frags = FALSE;
|
|
}
|
|
else {
|
|
more_frags = TRUE;
|
|
}
|
|
ci = proto_tree_add_item(tree, proto_tcp_conv, tvb,
|
|
frame_offset, -1, FALSE);
|
|
conv_proto_tree = proto_item_add_subtree(ci, ett_tcp_conv);
|
|
dissect_tcp_convergence_data_header(tvb, conv_proto_tree);
|
|
|
|
/*
|
|
* Note: The reassembled bundle will only include the first
|
|
* Convergence layer header.
|
|
*/
|
|
|
|
frag_msg = fragment_add_seq_next(tvb, frame_offset + convergence_hdr_size,
|
|
pinfo, 0, msg_fragment_table,
|
|
msg_reassembled_table, segment_length,
|
|
more_frags);
|
|
if(frag_msg && !more_frags) {
|
|
proto_item *ti;
|
|
|
|
ti = proto_tree_add_item(tree, proto_bundle, tvb,
|
|
frame_offset, -1, FALSE);
|
|
bundle_tree = proto_item_add_subtree(ti, ett_bundle);
|
|
new_tvb = process_reassembled_data(tvb,
|
|
frame_offset + convergence_hdr_size,
|
|
pinfo, "Reassembled DTN", frag_msg,
|
|
&msg_frag_items, NULL, bundle_tree);
|
|
}
|
|
if(new_tvb) {
|
|
int bundle_size;
|
|
bundle_size = dissect_complete_bundle(new_tvb, pinfo, bundle_tree);
|
|
if(bundle_size == 0) { /*Couldn't parse bundle*/
|
|
col_set_str(pinfo->cinfo, COL_INFO, "Dissection Failed");
|
|
return; /*Give up*/
|
|
}
|
|
}
|
|
else {
|
|
|
|
/*
|
|
* If there are 2 segments, the second of which is very short, this
|
|
* gets displayed instead of the usual Source EID/Destination EID in
|
|
* the Bundle Dissection frame. If these statements are left out entirely,
|
|
* nothing is displayed, i.e., there seems to be no way to get the
|
|
* Source/Destination in the 2-segment case. I'll leave it in because I
|
|
* think it is informative in the multi-segment case although confusing in the
|
|
* 2-segment case.
|
|
*/
|
|
|
|
col_set_str(pinfo->cinfo, COL_INFO, "[Reassembled Segment of a Bundle]");
|
|
}
|
|
|
|
/*
|
|
* If we could be sure that the current tvb buffer ended with the CL segment,
|
|
* we could return here. But the buffer could contain multiple complete segments
|
|
* or bundles or a bundle plus other CL messages. In order to process whatever
|
|
* follow the current segment, we have to continue through the buffer until
|
|
* frame_offset indicates everything in the buffer has been processed.
|
|
*/
|
|
|
|
frame_offset += (segment_length + convergence_hdr_size);
|
|
}
|
|
else { /*Else this is not a Data Segment*/
|
|
|
|
proto_item *conv_item;
|
|
proto_tree *conv_tree;
|
|
proto_item *ci;
|
|
char *sptr;
|
|
|
|
if(frame_offset == 0) {
|
|
ci = proto_tree_add_item(tree, proto_tcp_conv, tvb,
|
|
frame_offset, -1, FALSE);
|
|
conv_proto_tree = proto_item_add_subtree(ci, ett_tcp_conv);
|
|
}
|
|
|
|
/*
|
|
* Other Convergence Layer messages are short; assume they won't need
|
|
* reassembly. Start with the Convergence Layer Tree.
|
|
*/
|
|
|
|
conv_item = proto_tree_add_text(conv_proto_tree, tvb, frame_offset, -1,
|
|
"TCP Convergence Header");
|
|
conv_tree = proto_item_add_subtree(conv_item, ett_tcp_conv_hdr);
|
|
|
|
if(conv_hdr == (guint8)magic[0]) {
|
|
sptr = (char *) tvb_get_ephemeral_string(tvb, frame_offset, 4);
|
|
if(!memcmp(sptr, magic, 4)){
|
|
dissect_contact_header(tvb, pinfo, conv_tree, conv_item);
|
|
return; /*Assumes Contact Header is alone in segment*/
|
|
}
|
|
}
|
|
if(conv_hdr == TCP_CONVERGENCE_ACK_SEGMENT) { /*No valid flags in Ack*/
|
|
int ack_length;
|
|
int sdnv_length;
|
|
int fixed;
|
|
|
|
proto_tree_add_text(conv_tree, tvb, frame_offset, 1, "Pkt Type: Ack");
|
|
fixed = 1;
|
|
ack_length = evaluate_sdnv(tvb, frame_offset + fixed, &sdnv_length);
|
|
if(ack_length < 0) {
|
|
proto_tree_add_text(conv_tree, tvb, frame_offset + fixed, sdnv_length,
|
|
"Ack Length: Error");
|
|
return;
|
|
}
|
|
proto_tree_add_text(conv_tree, tvb, frame_offset + fixed, sdnv_length,
|
|
"Ack Length: %d", ack_length);
|
|
|
|
/*return (sdnv_length + fixed);*/
|
|
frame_offset += (sdnv_length + fixed);
|
|
proto_item_set_len(conv_item, sdnv_length + fixed);
|
|
}
|
|
else if(conv_hdr == TCP_CONVERGENCE_KEEP_ALIVE) { /*No valid flags in Keep Alive*/
|
|
proto_item_set_len(conv_item, 1);
|
|
proto_tree_add_text(conv_tree, tvb, frame_offset, 1, "Pkt Type: Keep Alive");
|
|
frame_offset += 1;
|
|
}
|
|
else if((conv_hdr & TCP_CONVERGENCE_TYPE_MASK) == TCP_CONVERGENCE_SHUTDOWN) {
|
|
proto_item *shutdown_flag_item;
|
|
proto_tree *shutdown_flag_tree;
|
|
guint8 shutdown_flags;
|
|
int field_length;
|
|
|
|
if((conv_hdr &
|
|
~(TCP_CONVERGENCE_TYPE_MASK | TCP_CONVERGENCE_SHUTDOWN_FLAGS)) != 0) {
|
|
proto_tree_add_text(conv_tree, tvb, frame_offset,
|
|
-1, "Invalid Convergence Layer Shutdown Packet");
|
|
return;
|
|
}
|
|
proto_item_set_len(conv_item, 1);
|
|
proto_tree_add_text(conv_tree, tvb, 0, 1, "Pkt Type: Shutdown");
|
|
|
|
/* Add tree for Shutdown Flags */
|
|
shutdown_flags = conv_hdr;
|
|
shutdown_flag_item = proto_tree_add_item(conv_tree,
|
|
hf_tcp_convergence_shutdown_flags, tvb,
|
|
frame_offset, 1, FALSE);
|
|
shutdown_flag_tree = proto_item_add_subtree(shutdown_flag_item,
|
|
ett_shutdown_flags);
|
|
proto_tree_add_boolean(shutdown_flag_tree,
|
|
hf_tcp_convergence_shutdown_flags_reason,
|
|
tvb, frame_offset, 1, shutdown_flags);
|
|
proto_tree_add_boolean(shutdown_flag_tree,
|
|
hf_tcp_convergence_shutdown_flags_delay,
|
|
tvb, frame_offset, 1, shutdown_flags);
|
|
|
|
frame_offset += 1;
|
|
field_length = 1;
|
|
if(conv_hdr & TCP_CONVERGENCE_SHUTDOWN_REASON) {
|
|
proto_tree_add_item(conv_tree,
|
|
hf_tcp_convergence_shutdown_reason, tvb,
|
|
frame_offset, 1, FALSE);
|
|
frame_offset += 1;
|
|
field_length += 1;
|
|
}
|
|
if(conv_hdr & TCP_CONVERGENCE_SHUTDOWN_DELAY) {
|
|
proto_tree_add_item(conv_tree,
|
|
hf_tcp_convergence_shutdown_delay, tvb,
|
|
frame_offset, 2, FALSE);
|
|
frame_offset += 2;
|
|
field_length += 2;
|
|
}
|
|
proto_item_set_len(conv_item, field_length);
|
|
}
|
|
else if(conv_hdr == TCP_CONVERGENCE_REFUSE_BUNDLE) { /*No valid flags*/
|
|
proto_item_set_len(conv_item, 1);
|
|
proto_tree_add_text(conv_tree, tvb, frame_offset,
|
|
1, "Pkt Type: Refuse Bundle");
|
|
frame_offset += 1;
|
|
}
|
|
else {
|
|
proto_tree_add_text(conv_tree, tvb, frame_offset,
|
|
-1, "Invalid/Partial Convergence Layer Packet");
|
|
return;
|
|
}
|
|
}
|
|
} /*end while()*/
|
|
return;
|
|
}
|
|
|
|
static void
|
|
dissect_udp_bundle(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
|
|
int buffer_size; /*Number of bytes in buffer that can be processed*/
|
|
int hdr_offset;
|
|
int lasthdrflag;
|
|
guint8 next_header_type;
|
|
proto_item *ti;
|
|
proto_tree *bundle_tree;
|
|
proto_item *primary_item;
|
|
proto_tree *primary_tree;
|
|
|
|
buffer_size = tvb_reported_length_remaining(tvb, 0);
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "Bundle");
|
|
/* Clear out stuff in the info column */
|
|
col_clear(pinfo->cinfo,COL_INFO);
|
|
|
|
ti = proto_tree_add_item(tree, proto_bundle, tvb, 0, -1, FALSE);
|
|
bundle_tree = proto_item_add_subtree(ti, ett_bundle);
|
|
|
|
primary_item = proto_tree_add_text(bundle_tree, tvb, 0, -1,
|
|
"Primary Bundle Header");
|
|
primary_tree = proto_item_add_subtree(primary_item, ett_primary_hdr);
|
|
hdr_offset = dissect_primary_header(pinfo, primary_tree, tvb);
|
|
if(hdr_offset == 0) {
|
|
col_set_str(pinfo->cinfo, COL_INFO, "Protocol Error");
|
|
return;
|
|
}
|
|
proto_item_set_len(primary_item, hdr_offset);
|
|
|
|
/*
|
|
* Done with primary header; decode the remaining headers
|
|
*/
|
|
|
|
lasthdrflag = 0;
|
|
while((hdr_offset > 0) && (buffer_size > hdr_offset)) {
|
|
gint payload_size;
|
|
|
|
next_header_type = tvb_get_guint8(tvb, hdr_offset);
|
|
if(next_header_type == PAYLOAD_HEADER_TYPE) {
|
|
payload_size =
|
|
dissect_payload_header(bundle_tree, tvb, hdr_offset, &lasthdrflag);
|
|
}
|
|
else { /*Assume anything else is a Metadata Block*/
|
|
payload_size = display_metadata_block(bundle_tree, tvb,
|
|
hdr_offset, &lasthdrflag);
|
|
}
|
|
if(payload_size == 0) {
|
|
col_set_str(pinfo->cinfo, COL_INFO, "Protocol Error");
|
|
return;
|
|
}
|
|
hdr_offset += payload_size;
|
|
if(lasthdrflag) {
|
|
return;
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
static int
|
|
dissect_tcp_convergence_data_header(tvbuff_t *tvb, proto_tree *tree)
|
|
{
|
|
proto_item *conv_item;
|
|
proto_tree *conv_tree;
|
|
int buflen;
|
|
int sdnv_length;
|
|
int segment_length;
|
|
proto_item *conv_flag_item;
|
|
proto_tree *conv_flag_tree;
|
|
guint8 tcp_convergence_hdr_procflags;
|
|
|
|
buflen = tvb_length(tvb);
|
|
conv_item = proto_tree_add_text(tree, tvb, 0, -1, "TCP Convergence Header");
|
|
conv_tree = proto_item_add_subtree(conv_item, ett_tcp_conv_hdr);
|
|
proto_tree_add_text(conv_tree, tvb, 0, 1, "Pkt Type: Data");
|
|
|
|
/* Add tree for Start/End bits */
|
|
tcp_convergence_hdr_procflags = tvb_get_guint8(tvb, 0);
|
|
conv_flag_item = proto_tree_add_item(conv_tree, hf_tcp_convergence_data_procflags, tvb,
|
|
0, 1, FALSE);
|
|
conv_flag_tree = proto_item_add_subtree(conv_flag_item, ett_conv_flags);
|
|
proto_tree_add_boolean(conv_flag_tree, hf_tcp_convergence_data_procflags_start,
|
|
tvb, 0, 1, tcp_convergence_hdr_procflags);
|
|
proto_tree_add_boolean(conv_flag_tree, hf_tcp_convergence_data_procflags_end,
|
|
tvb, 0, 1, tcp_convergence_hdr_procflags);
|
|
|
|
segment_length = evaluate_sdnv(tvb, 1, &sdnv_length);
|
|
proto_tree_add_text(conv_tree, tvb, 1, sdnv_length, "Segment Length: %d", segment_length);
|
|
proto_item_set_len(conv_item, sdnv_length + 1);
|
|
return buflen;
|
|
}
|
|
|
|
/*
|
|
* Dissect a complete bundle starting at offset 0 in tvb. Return 0 on failure,
|
|
* otherwise the length of the bundle.
|
|
*/
|
|
|
|
int
|
|
dissect_complete_bundle(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
proto_item *primary_item;
|
|
proto_tree *primary_tree;
|
|
int primary_header_size;
|
|
gboolean lastheader = FALSE;
|
|
int offset;
|
|
|
|
primary_item = proto_tree_add_text(tree, tvb, 0, -1,
|
|
"Primary Bundle Header");
|
|
primary_tree = proto_item_add_subtree(primary_item, ett_primary_hdr);
|
|
primary_header_size = dissect_primary_header(pinfo, primary_tree, tvb);
|
|
if(primary_header_size == 0) { /*Couldn't parse primary header*/
|
|
col_set_str(pinfo->cinfo, COL_INFO, "Protocol Error");
|
|
return(0); /*Give up*/
|
|
}
|
|
proto_item_set_len(primary_item, primary_header_size);
|
|
offset = primary_header_size;
|
|
|
|
/*
|
|
* Done with primary header; decode the remaining headers
|
|
*/
|
|
|
|
while(lastheader == FALSE) {
|
|
guint8 next_header_type;
|
|
int payload_size;
|
|
|
|
next_header_type = tvb_get_guint8(tvb, offset);
|
|
if(next_header_type == PAYLOAD_HEADER_TYPE) {
|
|
|
|
/*
|
|
* Returns payload size or 0 if can't parse payload
|
|
*/
|
|
payload_size = dissect_payload_header(tree, tvb, offset, &lastheader);
|
|
}
|
|
else { /*Assume anything else is a Metadata Block*/
|
|
payload_size = display_metadata_block(tree, tvb, offset, &lastheader);
|
|
}
|
|
if(payload_size == 0) { /*Payload header parse failed*/
|
|
col_set_str(pinfo->cinfo, COL_INFO, "Dissection Failed");
|
|
return (0);
|
|
}
|
|
offset += payload_size;
|
|
}
|
|
return(offset);
|
|
}
|
|
|
|
/*
|
|
* This routine returns 0 if header decoding fails, otherwise the length of the primary
|
|
* header. The bundle starts right at the beginning of the tvbuff.
|
|
*/
|
|
|
|
static int
|
|
dissect_primary_header(packet_info *pinfo, proto_tree *primary_tree, tvbuff_t *tvb)
|
|
{
|
|
gint offset;
|
|
guint8 version;
|
|
|
|
offset = 0;
|
|
|
|
version = tvb_get_guint8(tvb, 0); /* Primary Header Version */
|
|
|
|
if((version != 4) && (version != 5) && (version != 6)) {
|
|
proto_tree_add_text(primary_tree, tvb, offset, 1, "Invalid Version Number");
|
|
return 0;
|
|
}
|
|
|
|
proto_tree_add_item(primary_tree, hf_bundle_pdu_version, tvb, offset, 1, FALSE);
|
|
if (version == 4) {
|
|
return dissect_version_4_primary_header(pinfo, primary_tree, tvb);
|
|
}
|
|
else {
|
|
return dissect_version_5_and_6_primary_header(pinfo, primary_tree, tvb);
|
|
}
|
|
}
|
|
|
|
/* XXX: Consider common functions for use by dissect_version_4_primary_header() and
|
|
dissect_version_5_and_6_primary_header() since there's much identical code
|
|
between the two.
|
|
*/
|
|
|
|
static int
|
|
dissect_version_4_primary_header(packet_info *pinfo, proto_tree *primary_tree, tvbuff_t *tvb)
|
|
{
|
|
guint8 cosflags;
|
|
const guint8 *dict_ptr;
|
|
int bundle_header_length;
|
|
int bundle_header_dict_length;
|
|
int offset; /*Total offset into frame (frame_offset + convergence layer size)*/
|
|
int sdnv_length;
|
|
int dest_scheme_offset, dest_ssp_offset, source_scheme_offset, source_ssp_offset;
|
|
int report_scheme_offset, report_ssp_offset, cust_scheme_offset, cust_ssp_offset;
|
|
int fragment_offset, total_adu_length;
|
|
int dst_scheme_pos, src_scheme_pos, rpt_scheme_pos, cust_scheme_pos;
|
|
int dst_scheme_len, src_scheme_len, rpt_scheme_len, cust_scheme_len;
|
|
int dst_ssp_len, src_ssp_len, rpt_ssp_len, cust_ssp_len;
|
|
const gchar *src_node;
|
|
const gchar *dst_node;
|
|
|
|
guint8 srrflags;
|
|
proto_item *srr_flag_item;
|
|
proto_tree *srr_flag_tree;
|
|
|
|
proto_item *proc_flag_item;
|
|
proto_tree *proc_flag_tree;
|
|
proto_item *cos_flag_item;
|
|
proto_tree *cos_flag_tree;
|
|
proto_item *dict_item;
|
|
proto_tree *dict_tree;
|
|
|
|
offset = 1; /* Version Number already displayed*/
|
|
|
|
/* Primary Header Processing Flags */
|
|
pri_hdr_procflags = tvb_get_guint8(tvb, offset);
|
|
proc_flag_item = proto_tree_add_item(primary_tree, hf_bundle_procflags, tvb,
|
|
offset, 1, FALSE);
|
|
proc_flag_tree = proto_item_add_subtree(proc_flag_item, ett_proc_flags);
|
|
proto_tree_add_boolean(proc_flag_tree, hf_bundle_procflags_fragment,
|
|
tvb, offset, 1, pri_hdr_procflags);
|
|
proto_tree_add_boolean(proc_flag_tree, hf_bundle_procflags_admin,
|
|
tvb, offset, 1, pri_hdr_procflags);
|
|
proto_tree_add_boolean(proc_flag_tree, hf_bundle_procflags_dont_fragment,
|
|
tvb, offset, 1, pri_hdr_procflags);
|
|
proto_tree_add_boolean(proc_flag_tree, hf_bundle_procflags_cust_xfer_req,
|
|
tvb, offset, 1, pri_hdr_procflags);
|
|
proto_tree_add_boolean(proc_flag_tree, hf_bundle_procflags_dest_singleton,
|
|
tvb, offset, 1, pri_hdr_procflags);
|
|
|
|
/* Primary Header COS Flags */
|
|
++offset;
|
|
cosflags = tvb_get_guint8(tvb, offset);
|
|
cos_flag_item = proto_tree_add_item(primary_tree, hf_bundle_cosflags, tvb,
|
|
offset, 1, FALSE);
|
|
cos_flag_tree = proto_item_add_subtree(cos_flag_item, ett_cos_flags);
|
|
proto_tree_add_uint(cos_flag_tree, hf_bundle_cosflags_priority,
|
|
tvb, offset, 1, cosflags);
|
|
/* Status Report Request Flags */
|
|
++offset;
|
|
srrflags = tvb_get_guint8(tvb, offset);
|
|
srr_flag_item = proto_tree_add_item(primary_tree, hf_bundle_srrflags, tvb,
|
|
offset, 1, FALSE);
|
|
srr_flag_tree = proto_item_add_subtree(srr_flag_item, ett_srr_flags);
|
|
|
|
proto_tree_add_boolean(srr_flag_tree, hf_bundle_srrflags_report_receipt,
|
|
tvb, offset, 1, srrflags);
|
|
proto_tree_add_boolean(srr_flag_tree, hf_bundle_srrflags_report_cust_accept,
|
|
tvb, offset, 1, srrflags);
|
|
proto_tree_add_boolean(srr_flag_tree, hf_bundle_srrflags_report_forward,
|
|
tvb, offset, 1, srrflags);
|
|
proto_tree_add_boolean(srr_flag_tree, hf_bundle_srrflags_report_delivery,
|
|
tvb, offset, 1, srrflags);
|
|
proto_tree_add_boolean(srr_flag_tree, hf_bundle_srrflags_report_deletion,
|
|
tvb, offset, 1, srrflags);
|
|
proto_tree_add_boolean(srr_flag_tree, hf_bundle_srrflags_report_ack,
|
|
tvb, offset, 1, srrflags);
|
|
++offset;
|
|
|
|
bundle_header_length = evaluate_sdnv(tvb, offset, &sdnv_length);
|
|
if(bundle_header_length < 0) {
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length, "Bundle Header Length: Error");
|
|
return 0;
|
|
}
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length,
|
|
"Bundle Header Length: %d", bundle_header_length);
|
|
|
|
tvb_ensure_bytes_exist(tvb, offset + sdnv_length, bundle_header_length);
|
|
offset += sdnv_length;
|
|
|
|
/*
|
|
* Pick up offsets into dictionary (8 of them)
|
|
*/
|
|
|
|
dest_scheme_offset = tvb_get_ntohs(tvb, offset);
|
|
dst_scheme_pos = offset;
|
|
dst_scheme_len = 2;
|
|
proto_tree_add_item(primary_tree, hf_bundle_dest_scheme_offset,
|
|
tvb, offset, 2, FALSE);
|
|
offset += 2;
|
|
|
|
dest_ssp_offset = tvb_get_ntohs(tvb, offset);
|
|
dst_ssp_len = 2;
|
|
proto_tree_add_item(primary_tree, hf_bundle_dest_ssp_offset,
|
|
tvb, offset, 2, FALSE);
|
|
offset += 2;
|
|
|
|
source_scheme_offset = tvb_get_ntohs(tvb, offset);
|
|
src_scheme_pos = offset;
|
|
src_scheme_len = 2;
|
|
proto_tree_add_item(primary_tree, hf_bundle_source_scheme_offset,
|
|
tvb, offset, 2, FALSE);
|
|
offset += 2;
|
|
|
|
source_ssp_offset = tvb_get_ntohs(tvb, offset);
|
|
src_ssp_len = 2;
|
|
proto_tree_add_item(primary_tree, hf_bundle_source_ssp_offset,
|
|
tvb, offset, 2, FALSE);
|
|
offset += 2;
|
|
|
|
report_scheme_offset = tvb_get_ntohs(tvb, offset);
|
|
rpt_scheme_pos = offset;
|
|
rpt_scheme_len = 2;
|
|
proto_tree_add_item(primary_tree, hf_bundle_report_scheme_offset,
|
|
tvb, offset, 2, FALSE);
|
|
offset += 2;
|
|
|
|
report_ssp_offset = tvb_get_ntohs(tvb, offset);
|
|
rpt_ssp_len = 2;
|
|
proto_tree_add_item(primary_tree, hf_bundle_report_ssp_offset,
|
|
tvb, offset, 2, FALSE);
|
|
offset += 2;
|
|
|
|
cust_scheme_offset = tvb_get_ntohs(tvb, offset);
|
|
cust_scheme_pos = offset;
|
|
cust_scheme_len = 2;
|
|
proto_tree_add_item(primary_tree, hf_bundle_cust_scheme_offset,
|
|
tvb, offset, 2, FALSE);
|
|
offset += 2;
|
|
|
|
cust_ssp_offset = tvb_get_ntohs(tvb, offset);
|
|
cust_ssp_len = 2;
|
|
proto_tree_add_item(primary_tree, hf_bundle_cust_ssp_offset,
|
|
tvb, offset, 2, FALSE);
|
|
offset += 2;
|
|
|
|
proto_tree_add_item(primary_tree, hf_bundle_creation_timestamp,
|
|
tvb, offset, 8, FALSE);
|
|
offset += 8;
|
|
|
|
proto_tree_add_item(primary_tree, hf_bundle_lifetime, tvb, offset, 4, FALSE);
|
|
offset += 4;
|
|
|
|
bundle_header_dict_length = evaluate_sdnv(tvb, offset, &sdnv_length);
|
|
if(bundle_header_dict_length < 0) {
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length, "Dictionary Length: Error");
|
|
return 0;
|
|
}
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length,
|
|
"Dictionary Length: %d", bundle_header_dict_length);
|
|
offset += sdnv_length;
|
|
|
|
/*
|
|
* Pull out stuff from the dictionary
|
|
*/
|
|
|
|
tvb_ensure_bytes_exist(tvb, offset, bundle_header_dict_length);
|
|
|
|
dict_item = proto_tree_add_text(primary_tree, tvb, offset, bundle_header_dict_length, "Dictionary");
|
|
dict_tree = proto_item_add_subtree(dict_item, ett_dictionary);
|
|
|
|
/*
|
|
* If the dictionary length is 0, then the CBHE block compression method is applied.
|
|
* So the scheme offset is the node number and the ssp offset is the service number.
|
|
* If destination scheme offset is 2 and destination ssp offset is 1, then the EID is
|
|
* ipn:2.1
|
|
*/
|
|
if(bundle_header_dict_length == 0)
|
|
{
|
|
/*
|
|
* Destination info
|
|
*/
|
|
proto_tree_add_text(dict_tree, tvb, 0,
|
|
0, "Destination Scheme: %s",IPN_SCHEME_STR);
|
|
if(dest_scheme_offset == 0 && dest_ssp_offset == 0)
|
|
{
|
|
proto_tree_add_text(dict_tree, tvb, dst_scheme_pos,
|
|
dst_scheme_len + dst_ssp_len, "Destination: Null");
|
|
}
|
|
else
|
|
{
|
|
proto_tree_add_text(dict_tree, tvb, dst_scheme_pos,
|
|
dst_scheme_len + dst_ssp_len,
|
|
"Destination: %d.%d",dest_scheme_offset,dest_ssp_offset);
|
|
}
|
|
|
|
/*
|
|
* Source info
|
|
*/
|
|
proto_tree_add_text(dict_tree, tvb, 0,
|
|
0, "Source Scheme: %s",IPN_SCHEME_STR);
|
|
if(source_scheme_offset == 0 && source_ssp_offset == 0)
|
|
{
|
|
proto_tree_add_text(dict_tree, tvb, src_scheme_pos,
|
|
src_scheme_len + src_ssp_len, "Source: Null");
|
|
}
|
|
else
|
|
{
|
|
proto_tree_add_text(dict_tree, tvb, src_scheme_pos,
|
|
src_scheme_len + src_ssp_len,
|
|
"Source: %d.%d",source_scheme_offset,source_ssp_offset);
|
|
}
|
|
|
|
/*
|
|
* Report to info
|
|
*/
|
|
proto_tree_add_text(dict_tree, tvb, 0,
|
|
0, "Report Scheme: %s",IPN_SCHEME_STR);
|
|
if(report_scheme_offset == 0 && report_ssp_offset == 0)
|
|
{
|
|
proto_tree_add_text(dict_tree, tvb, rpt_scheme_pos,
|
|
rpt_scheme_len + rpt_ssp_len, "Report: Null");
|
|
}
|
|
else
|
|
{
|
|
proto_tree_add_text(dict_tree, tvb, rpt_scheme_pos,
|
|
rpt_scheme_len + rpt_ssp_len,
|
|
"Report: %d.%d",report_scheme_offset,report_ssp_offset);
|
|
}
|
|
|
|
/*
|
|
* Custodian info
|
|
*/
|
|
proto_tree_add_text(dict_tree, tvb, 0,
|
|
0, "Custodian Scheme: %s",IPN_SCHEME_STR);
|
|
if(cust_scheme_offset == 0 && cust_ssp_offset == 0)
|
|
{
|
|
proto_tree_add_text(dict_tree, tvb, cust_scheme_pos,
|
|
cust_scheme_len + cust_ssp_len, "Custodian: Null");
|
|
}
|
|
else
|
|
{
|
|
proto_tree_add_text(dict_tree, tvb, cust_scheme_pos,
|
|
cust_scheme_len + cust_ssp_len,
|
|
"Custodian: %d.%d",cust_scheme_offset,cust_ssp_offset);
|
|
}
|
|
|
|
if(source_scheme_offset == 0 && source_ssp_offset == 0)
|
|
{
|
|
src_node = "Null";
|
|
}
|
|
else
|
|
{
|
|
src_node = ep_strdup_printf("%s:%d.%d",IPN_SCHEME_STR, source_scheme_offset, source_ssp_offset);
|
|
}
|
|
if(dest_scheme_offset == 0 && dest_ssp_offset == 0)
|
|
{
|
|
dst_node = "Null";
|
|
}
|
|
else
|
|
{
|
|
dst_node = ep_strdup_printf("%s:%d.%d",IPN_SCHEME_STR, dest_scheme_offset, dest_ssp_offset);
|
|
}
|
|
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "%s > %s", src_node,dst_node);
|
|
}
|
|
|
|
/*
|
|
* This pointer can be made to address outside the packet boundaries so we
|
|
* need to check for improperly formatted strings (no null termination).
|
|
*/
|
|
|
|
else
|
|
{
|
|
/*
|
|
* Destination info
|
|
*/
|
|
|
|
proto_tree_add_item(dict_tree, hf_bundle_dest_scheme, tvb, offset + dest_scheme_offset, -1, FALSE);
|
|
proto_tree_add_item(dict_tree, hf_bundle_dest_ssp, tvb, offset + dest_ssp_offset, -1, FALSE);
|
|
|
|
/*
|
|
* Source info
|
|
*/
|
|
|
|
proto_tree_add_item(dict_tree, hf_bundle_source_scheme, tvb, offset + source_scheme_offset, -1, FALSE);
|
|
proto_tree_add_item(dict_tree, hf_bundle_source_ssp, tvb, offset + source_ssp_offset, -1, FALSE);
|
|
|
|
/*
|
|
* Report to info
|
|
*/
|
|
|
|
proto_tree_add_item(dict_tree, hf_bundle_report_scheme, tvb, offset + report_scheme_offset, -1, FALSE);
|
|
proto_tree_add_item(dict_tree, hf_bundle_report_ssp, tvb, offset + report_ssp_offset, -1, FALSE);
|
|
|
|
/*
|
|
* Custodian info
|
|
*/
|
|
|
|
proto_tree_add_item(dict_tree, hf_bundle_custodian_scheme, tvb, offset + cust_scheme_offset, -1, FALSE);
|
|
proto_tree_add_item(dict_tree, hf_bundle_custodian_ssp, tvb, offset + cust_ssp_offset, -1, FALSE);
|
|
|
|
/*
|
|
* Add Source/Destination to INFO Field
|
|
*/
|
|
|
|
/* Note: If we get this far, the offsets (and the strings) are at least within the TVB */
|
|
dict_ptr = tvb_get_ptr(tvb, offset, bundle_header_dict_length);
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "%s:%s > %s:%s",
|
|
dict_ptr + source_scheme_offset, dict_ptr + source_ssp_offset,
|
|
dict_ptr + dest_scheme_offset, dict_ptr + dest_ssp_offset);
|
|
|
|
}
|
|
offset += bundle_header_dict_length; /*Skip over dictionary*/
|
|
/*
|
|
* Do this only if Fragment Flag is set
|
|
*/
|
|
|
|
if(pri_hdr_procflags & BUNDLE_PROCFLAGS_FRAG_MASK) {
|
|
fragment_offset = evaluate_sdnv(tvb, offset, &sdnv_length);
|
|
if(fragment_offset < 0) {
|
|
return 0;
|
|
}
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length,
|
|
"Fragment Offset: %d", fragment_offset);
|
|
offset += sdnv_length;
|
|
|
|
total_adu_length = evaluate_sdnv(tvb, offset, &sdnv_length);
|
|
if(total_adu_length < 0) {
|
|
return 0;
|
|
}
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length,
|
|
"Total Application Data Unit Length: %d", fragment_offset);
|
|
offset += sdnv_length;
|
|
}
|
|
return (offset);
|
|
}
|
|
|
|
|
|
/*
|
|
* This routine returns 0 if header decoding fails, otherwise the length of the primary
|
|
* header. The bundle starts right at the beginning of the tvbuff.
|
|
*/
|
|
|
|
static int
|
|
dissect_version_5_and_6_primary_header(packet_info *pinfo,
|
|
proto_tree *primary_tree, tvbuff_t *tvb)
|
|
{
|
|
guint64 bundle_processing_control_flags;
|
|
guint8 cosflags;
|
|
const guint8 *dict_ptr;
|
|
int bundle_header_length;
|
|
int bundle_header_dict_length;
|
|
int offset; /*Total offset into frame (frame_offset + convergence layer size)*/
|
|
int sdnv_length;
|
|
int dest_scheme_offset, dest_ssp_offset, source_scheme_offset, source_ssp_offset;
|
|
int report_scheme_offset, report_ssp_offset, cust_scheme_offset, cust_ssp_offset;
|
|
int dest_scheme_pos, source_scheme_pos, report_scheme_pos, cust_scheme_pos;
|
|
int dest_scheme_len, source_scheme_len, report_scheme_len, cust_scheme_len;
|
|
int dest_ssp_len, source_ssp_len, report_ssp_len, cust_ssp_len;
|
|
int fragment_offset, total_adu_length;
|
|
int timestamp;
|
|
time_t time_since_2000;
|
|
int timestamp_sequence;
|
|
int lifetime;
|
|
char *time_string;
|
|
const gchar *src_node;
|
|
const gchar *dst_node;
|
|
guint8 srrflags;
|
|
proto_item *srr_flag_item;
|
|
proto_tree *srr_flag_tree;
|
|
proto_item *gen_flag_item;
|
|
proto_tree *gen_flag_tree;
|
|
|
|
proto_item *proc_flag_item;
|
|
proto_tree *proc_flag_tree;
|
|
proto_item *cos_flag_item;
|
|
proto_tree *cos_flag_tree;
|
|
proto_item *dict_item;
|
|
proto_tree *dict_tree;
|
|
|
|
|
|
offset = 1; /* Version Number already displayed */
|
|
bundle_processing_control_flags = evaluate_sdnv_64(tvb, offset, &sdnv_length);
|
|
|
|
/* Primary Header Processing Flags */
|
|
pri_hdr_procflags = (guint8) (bundle_processing_control_flags & 0x7f);
|
|
|
|
if (sdnv_length < 1) {
|
|
expert_add_info_format(pinfo, primary_tree, PI_UNDECODED, PI_WARN,
|
|
"Wrong bundle control flag length: %d", sdnv_length);
|
|
return 0;
|
|
}
|
|
proc_flag_item = proto_tree_add_item(primary_tree, hf_bundle_control_flags, tvb,
|
|
offset, sdnv_length, FALSE);
|
|
proc_flag_tree = proto_item_add_subtree(proc_flag_item, ett_proc_flags);
|
|
|
|
gen_flag_item = proto_tree_add_text(proc_flag_tree, tvb, offset,
|
|
sdnv_length, "General Flags");
|
|
gen_flag_tree = proto_item_add_subtree(gen_flag_item, ett_gen_flags);
|
|
|
|
proto_tree_add_boolean(gen_flag_tree, hf_bundle_procflags_fragment,
|
|
tvb, offset, sdnv_length, pri_hdr_procflags);
|
|
proto_tree_add_boolean(gen_flag_tree, hf_bundle_procflags_admin,
|
|
tvb, offset, sdnv_length, pri_hdr_procflags);
|
|
proto_tree_add_boolean(gen_flag_tree, hf_bundle_procflags_dont_fragment,
|
|
tvb, offset, sdnv_length, pri_hdr_procflags);
|
|
proto_tree_add_boolean(gen_flag_tree, hf_bundle_procflags_cust_xfer_req,
|
|
tvb, offset, sdnv_length, pri_hdr_procflags);
|
|
proto_tree_add_boolean(gen_flag_tree, hf_bundle_procflags_dest_singleton,
|
|
tvb, offset, sdnv_length, pri_hdr_procflags);
|
|
proto_tree_add_boolean(gen_flag_tree, hf_bundle_procflags_application_ack,
|
|
tvb, offset, sdnv_length, pri_hdr_procflags);
|
|
|
|
/* Primary Header COS Flags */
|
|
cosflags = (guint8) ((bundle_processing_control_flags >> 7) & 0x7f);
|
|
cos_flag_item = proto_tree_add_text(proc_flag_tree, tvb, offset,
|
|
sdnv_length, "Class of Service Flags");
|
|
cos_flag_tree = proto_item_add_subtree(cos_flag_item, ett_cos_flags);
|
|
if((cosflags & BUNDLE_COSFLAGS_PRIORITY_MASK) == BUNDLE_COSFLAGS_PRIORITY_BULK) {
|
|
proto_tree_add_text(cos_flag_tree, tvb, offset,
|
|
sdnv_length, "00 -- Priority = Bulk");
|
|
}
|
|
else if((cosflags & BUNDLE_COSFLAGS_PRIORITY_MASK) ==
|
|
BUNDLE_COSFLAGS_PRIORITY_NORMAL) {
|
|
proto_tree_add_text(cos_flag_tree, tvb, offset,
|
|
sdnv_length, "01 -- Priority = Normal");
|
|
}
|
|
else if((cosflags & BUNDLE_COSFLAGS_PRIORITY_MASK) ==
|
|
BUNDLE_COSFLAGS_PRIORITY_EXP) {
|
|
proto_tree_add_text(cos_flag_tree, tvb, offset,
|
|
sdnv_length, "10 -- Priority = Expedited");
|
|
}
|
|
else {
|
|
proto_tree_add_text(cos_flag_tree, tvb, offset,
|
|
sdnv_length, "11 -- Invalid (Reserved)");
|
|
return 0;
|
|
}
|
|
|
|
/* Status Report Request Flags */
|
|
srrflags = (guint8) ((bundle_processing_control_flags >> 14) & 0x7f);
|
|
srr_flag_item = proto_tree_add_text(proc_flag_tree, tvb, offset,
|
|
sdnv_length, "Status Report Request Flags");
|
|
srr_flag_tree = proto_item_add_subtree(srr_flag_item, ett_srr_flags);
|
|
|
|
proto_tree_add_boolean(srr_flag_tree, hf_bundle_srrflags_report_receipt,
|
|
tvb, offset, sdnv_length, srrflags);
|
|
proto_tree_add_boolean(srr_flag_tree, hf_bundle_srrflags_report_cust_accept,
|
|
tvb, offset, sdnv_length, srrflags);
|
|
proto_tree_add_boolean(srr_flag_tree, hf_bundle_srrflags_report_forward,
|
|
tvb, offset, sdnv_length, srrflags);
|
|
proto_tree_add_boolean(srr_flag_tree, hf_bundle_srrflags_report_delivery,
|
|
tvb, offset, sdnv_length, srrflags);
|
|
proto_tree_add_boolean(srr_flag_tree, hf_bundle_srrflags_report_deletion,
|
|
tvb, offset, sdnv_length, srrflags);
|
|
offset += sdnv_length;
|
|
|
|
/* -- hdr_length -- */
|
|
bundle_header_length = evaluate_sdnv(tvb, offset, &sdnv_length);
|
|
if(bundle_header_length < 0) {
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length,
|
|
"Bundle Header Length: Error");
|
|
return 0;
|
|
}
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length,
|
|
"Bundle Header Length: %d", bundle_header_length);
|
|
tvb_ensure_bytes_exist(tvb, offset + sdnv_length, bundle_header_length);
|
|
offset += sdnv_length;
|
|
|
|
/*
|
|
* Pick up offsets into dictionary (8 of them). Do rough sanity check that SDNV
|
|
* hasn't told us to access way past the Primary Header.
|
|
*/
|
|
|
|
/* -- dest_scheme -- */
|
|
dest_scheme_offset = evaluate_sdnv(tvb, offset, &sdnv_length);
|
|
dest_scheme_pos = offset;
|
|
dest_scheme_len = sdnv_length;
|
|
|
|
if((dest_scheme_offset < 0) || (dest_scheme_offset > bundle_header_length)) {
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length,
|
|
"Destination Scheme Offset: Error");
|
|
return 0;
|
|
}
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length,
|
|
"Destination Scheme Offset: %d", dest_scheme_offset);
|
|
offset += sdnv_length;
|
|
|
|
/* -- dest_ssp -- */
|
|
dest_ssp_offset = evaluate_sdnv(tvb, offset, &sdnv_length);
|
|
dest_ssp_len = sdnv_length;
|
|
|
|
if((dest_ssp_offset < 0) || (dest_ssp_offset > bundle_header_length)) {
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length,
|
|
"Destination SSP Offset: Error");
|
|
return 0;
|
|
}
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length,
|
|
"Destination SSP Offset: %d", dest_ssp_offset);
|
|
offset += sdnv_length;
|
|
|
|
|
|
/* -- source_scheme -- */
|
|
source_scheme_offset = evaluate_sdnv(tvb, offset, &sdnv_length);
|
|
source_scheme_pos = offset;
|
|
source_scheme_len = sdnv_length;
|
|
|
|
if((source_scheme_offset < 0) || (source_scheme_offset > bundle_header_length)) {
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length,
|
|
"Source Scheme Offset: Error");
|
|
return 0;
|
|
}
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length,
|
|
"Source Scheme Offset: %d", source_scheme_offset);
|
|
offset += sdnv_length;
|
|
|
|
/* -- source_ssp -- */
|
|
source_ssp_offset = evaluate_sdnv(tvb, offset, &sdnv_length);
|
|
source_ssp_len = sdnv_length;
|
|
|
|
if((source_ssp_offset < 0) || (source_ssp_offset > bundle_header_length)) {
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length,
|
|
"Source SSP Offset: Error");
|
|
return 0;
|
|
}
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length,
|
|
"Source SSP Offset: %d", source_ssp_offset);
|
|
offset += sdnv_length;
|
|
|
|
|
|
/* -- report_scheme -- */
|
|
report_scheme_offset = evaluate_sdnv(tvb, offset, &sdnv_length);
|
|
report_scheme_pos = offset;
|
|
report_scheme_len = sdnv_length;
|
|
|
|
if((report_scheme_offset < 0) || (report_scheme_offset > bundle_header_length)) {
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length,
|
|
"Report Scheme Offset: Error");
|
|
return 0;
|
|
}
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length,
|
|
"Report Scheme Offset: %d", report_scheme_offset);
|
|
offset += sdnv_length;
|
|
|
|
/* -- report_ssp -- */
|
|
report_ssp_offset = evaluate_sdnv(tvb, offset, &sdnv_length);
|
|
report_ssp_len = sdnv_length;
|
|
|
|
if((report_ssp_offset < 0) || (report_ssp_offset > bundle_header_length)) {
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length,
|
|
"Report SSP Offset: Error");
|
|
return 0;
|
|
}
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length,
|
|
"Report SSP Offset: %d", report_ssp_offset);
|
|
offset += sdnv_length;
|
|
|
|
|
|
/* -- cust_scheme -- */
|
|
cust_scheme_offset = evaluate_sdnv(tvb, offset, &sdnv_length);
|
|
cust_scheme_pos = offset;
|
|
cust_scheme_len = sdnv_length;
|
|
|
|
if((cust_scheme_offset < 0) || (cust_scheme_offset > bundle_header_length)) {
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length,
|
|
"Custodian Scheme Offset: Error");
|
|
return 0;
|
|
}
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length,
|
|
"Custodian Scheme Offset: %d", cust_scheme_offset);
|
|
offset += sdnv_length;
|
|
|
|
/* -- cust_ssp -- */
|
|
cust_ssp_offset = evaluate_sdnv(tvb, offset, &sdnv_length);
|
|
cust_ssp_len = sdnv_length;
|
|
|
|
if((cust_ssp_offset < 0) || (cust_ssp_offset > bundle_header_length)) {
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length,
|
|
"Custodian SSP Offset: Error");
|
|
return 0;
|
|
}
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length,
|
|
"Custodian SSP Offset: %d", cust_ssp_offset);
|
|
offset += sdnv_length;
|
|
|
|
|
|
/* -- timestamp -- */
|
|
timestamp = evaluate_sdnv(tvb, offset, &sdnv_length);
|
|
if(timestamp < 0) {
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length,
|
|
"Timestamp: Error");
|
|
return 0;
|
|
}
|
|
time_since_2000 = (time_t) (timestamp + 946684800);
|
|
time_string = abs_time_secs_to_str(time_since_2000, ABSOLUTE_TIME_LOCAL, TRUE);
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length,
|
|
"Timestamp: 0x%x [%s]", timestamp, time_string);
|
|
offset += sdnv_length;
|
|
|
|
/* -- timestamp_sequence -- */
|
|
timestamp_sequence = evaluate_sdnv(tvb, offset, &sdnv_length);
|
|
if(timestamp_sequence < 0) {
|
|
gint64 ts_seq;
|
|
|
|
if((ts_seq = evaluate_sdnv_64(tvb, offset, &sdnv_length)) < 0) {
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length,
|
|
"Timestamp Sequence Number: Error");
|
|
return 0;
|
|
}
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length,
|
|
"Timestamp Sequence Number: 0x%" G_GINT64_MODIFIER "x", ts_seq);
|
|
}
|
|
else {
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length,
|
|
"Timestamp Sequence Number: %d", timestamp_sequence);
|
|
}
|
|
offset += sdnv_length;
|
|
|
|
/* -- lifetime -- */
|
|
lifetime = evaluate_sdnv(tvb, offset, &sdnv_length);
|
|
if(lifetime < 0) {
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length,
|
|
"Lifetime: Error");
|
|
return 0;
|
|
}
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length,
|
|
"Lifetime: %d", lifetime);
|
|
offset += sdnv_length;
|
|
|
|
/* -- dict_length -- */
|
|
bundle_header_dict_length = evaluate_sdnv(tvb, offset, &sdnv_length);
|
|
if(bundle_header_dict_length < 0) {
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length,
|
|
"Dictionary Length: Error");
|
|
return 0;
|
|
}
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length,
|
|
"Dictionary Length: %d",bundle_header_dict_length);
|
|
offset += sdnv_length;
|
|
|
|
/*
|
|
* Pull out stuff from the dictionary
|
|
*/
|
|
|
|
tvb_ensure_bytes_exist(tvb, offset, bundle_header_dict_length);
|
|
|
|
dict_item = proto_tree_add_text(primary_tree, tvb, offset, bundle_header_dict_length,
|
|
"Dictionary");
|
|
dict_tree = proto_item_add_subtree(dict_item, ett_dictionary);
|
|
|
|
if(bundle_header_dict_length == 0)
|
|
{
|
|
/*
|
|
* Destination info
|
|
*/
|
|
proto_tree_add_text(dict_tree, tvb,
|
|
0, 0,
|
|
"Destination Scheme: %s",IPN_SCHEME_STR);
|
|
if(dest_scheme_offset == 0 && dest_ssp_offset == 0)
|
|
{
|
|
proto_tree_add_text(dict_tree, tvb,
|
|
dest_scheme_pos, dest_scheme_len + dest_ssp_len,
|
|
"Destination: Null");
|
|
}
|
|
else
|
|
{
|
|
proto_tree_add_text(dict_tree, tvb,
|
|
dest_scheme_pos, dest_scheme_len + dest_ssp_len,
|
|
"Destination: %d.%d",dest_scheme_offset,dest_ssp_offset);
|
|
}
|
|
|
|
/*
|
|
* Source info
|
|
*/
|
|
proto_tree_add_text(dict_tree, tvb,
|
|
0, 0,
|
|
"Source Scheme: %s",IPN_SCHEME_STR);
|
|
if(source_scheme_offset == 0 && source_ssp_offset == 0)
|
|
{
|
|
proto_tree_add_text(dict_tree, tvb,
|
|
source_scheme_pos, source_scheme_len + source_ssp_len,
|
|
"Source: Null");
|
|
}
|
|
else
|
|
{
|
|
proto_tree_add_text(dict_tree, tvb,
|
|
source_scheme_pos, source_scheme_len + source_ssp_len,
|
|
"Source: %d.%d",source_scheme_offset,source_ssp_offset);
|
|
}
|
|
|
|
/*
|
|
* Report to info
|
|
*/
|
|
proto_tree_add_text(dict_tree, tvb,
|
|
0, 0,
|
|
"Report Scheme: %s",IPN_SCHEME_STR);
|
|
if((report_scheme_offset == 0) && (report_ssp_offset == 0))
|
|
{
|
|
proto_tree_add_text(dict_tree, tvb,
|
|
report_scheme_pos, report_scheme_len + report_ssp_len,
|
|
"Report: Null");
|
|
}
|
|
else
|
|
{
|
|
proto_tree_add_text(dict_tree, tvb,
|
|
report_scheme_pos, report_scheme_len + report_ssp_len,
|
|
"Report: %d.%d",report_scheme_offset,report_ssp_offset);
|
|
}
|
|
|
|
/*
|
|
* Custodian info
|
|
*/
|
|
proto_tree_add_text(dict_tree, tvb, 0,
|
|
0, "Custodian Scheme: %s",IPN_SCHEME_STR);
|
|
if(cust_scheme_offset == 0 && cust_ssp_offset == 0)
|
|
{
|
|
proto_tree_add_text(dict_tree, tvb,
|
|
cust_scheme_pos, cust_scheme_len + cust_ssp_len,
|
|
"Custodian: Null");
|
|
}
|
|
else
|
|
{
|
|
proto_tree_add_text(dict_tree, tvb, cust_scheme_pos,
|
|
cust_scheme_len + cust_ssp_len,
|
|
"Custodian: %d.%d",cust_scheme_offset,cust_ssp_offset);
|
|
}
|
|
|
|
if(source_scheme_offset == 0 && source_ssp_offset == 0)
|
|
{
|
|
src_node = "Null";
|
|
}
|
|
else
|
|
{
|
|
src_node = ep_strdup_printf("%s:%d.%d",IPN_SCHEME_STR, source_scheme_offset, source_ssp_offset);
|
|
}
|
|
if(dest_scheme_offset == 0 && dest_ssp_offset == 0)
|
|
{
|
|
dst_node = "Null";
|
|
}
|
|
else
|
|
{
|
|
dst_node = ep_strdup_printf("%s:%d.%d",IPN_SCHEME_STR, dest_scheme_offset, dest_ssp_offset);
|
|
}
|
|
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "%s > %s", src_node, dst_node);
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* Note that the various "offset" pointers may address outside the packet boundaries.
|
|
* proto_tree_add_item() will throw a "bounds exception" for invalid "offset" values.
|
|
*/
|
|
|
|
/*
|
|
* Destination info
|
|
*/
|
|
|
|
proto_tree_add_item(dict_tree, hf_bundle_dest_scheme, tvb, offset + dest_scheme_offset, -1, FALSE);
|
|
proto_tree_add_item(dict_tree, hf_bundle_dest_ssp, tvb, offset + dest_ssp_offset, -1, FALSE);
|
|
|
|
/*
|
|
* Source info
|
|
*/
|
|
|
|
proto_tree_add_item(dict_tree, hf_bundle_source_scheme, tvb, offset + source_scheme_offset, -1, FALSE);
|
|
proto_tree_add_item(dict_tree, hf_bundle_source_ssp, tvb, offset + source_ssp_offset, -1, FALSE);
|
|
|
|
/*
|
|
* Report to info
|
|
*/
|
|
|
|
proto_tree_add_item(dict_tree, hf_bundle_report_scheme, tvb, offset + report_scheme_offset, -1, FALSE);
|
|
proto_tree_add_item(dict_tree, hf_bundle_report_ssp, tvb, offset + report_ssp_offset, -1, FALSE);
|
|
|
|
/*
|
|
* Custodian info
|
|
*/
|
|
|
|
proto_tree_add_item(dict_tree, hf_bundle_custodian_scheme, tvb, offset + cust_scheme_offset, -1, FALSE);
|
|
proto_tree_add_item(dict_tree, hf_bundle_custodian_ssp, tvb, offset + cust_ssp_offset, -1, FALSE);
|
|
|
|
/*
|
|
* Add Source/Destination to INFO Field
|
|
*/
|
|
|
|
/* Note: If we get this far, the offsets (and the strings) are at least within the TVB */
|
|
dict_ptr = tvb_get_ptr(tvb, offset, bundle_header_dict_length);
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "%s:%s > %s:%s",
|
|
dict_ptr + source_scheme_offset, dict_ptr + source_ssp_offset,
|
|
dict_ptr + dest_scheme_offset, dict_ptr + dest_ssp_offset);
|
|
}
|
|
offset += bundle_header_dict_length; /*Skip over dictionary*/
|
|
|
|
/*
|
|
* Do this only if Fragment Flag is set
|
|
*/
|
|
|
|
if(pri_hdr_procflags & BUNDLE_PROCFLAGS_FRAG_MASK) {
|
|
fragment_offset = evaluate_sdnv(tvb, offset, &sdnv_length);
|
|
if(fragment_offset < 0) {
|
|
return 0;
|
|
}
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length,
|
|
"Fragment Offset: %d", fragment_offset);
|
|
offset += sdnv_length;
|
|
|
|
total_adu_length = evaluate_sdnv(tvb, offset, &sdnv_length);
|
|
if(total_adu_length < 0) {
|
|
return 0;
|
|
}
|
|
proto_tree_add_text(primary_tree, tvb, offset, sdnv_length,
|
|
"Total Application Data Unit Length: %d", fragment_offset);
|
|
offset += sdnv_length;
|
|
}
|
|
return (offset);
|
|
}
|
|
|
|
/*
|
|
* bundle_offset is offset into this bundle where header starts.
|
|
* Return size of payload (including payload header) or 0 on failure.
|
|
*/
|
|
|
|
static int
|
|
dissect_payload_header(proto_tree *tree, tvbuff_t *tvb, int offset, gboolean *lastheader)
|
|
{
|
|
proto_item *payload_item;
|
|
proto_tree *payload_tree;
|
|
int sdnv_length;
|
|
int header_start;
|
|
int payload_length;
|
|
|
|
header_start = offset; /*Used to compute total payload length*/
|
|
payload_item = proto_tree_add_text(tree, tvb, offset, -1, "Payload Header");
|
|
payload_tree = proto_item_add_subtree(payload_item, ett_payload_hdr);
|
|
|
|
proto_tree_add_text(payload_tree, tvb, offset, 1, "Header Type: 1");
|
|
++offset;
|
|
|
|
/* Add tree for processing flags */
|
|
/* This is really a SDNV but there are only 7 bits defined so leave it this way*/
|
|
|
|
if(hf_bundle_pdu_version == 4) {
|
|
proto_item *proc_flag_item;
|
|
proto_tree *proc_flag_tree;
|
|
guint8 procflags;
|
|
|
|
procflags = tvb_get_guint8(tvb, offset);
|
|
if(procflags & HEADER_PROCFLAGS_LAST_HEADER) {
|
|
*lastheader = TRUE;
|
|
}
|
|
else {
|
|
*lastheader = FALSE;
|
|
}
|
|
proc_flag_item = proto_tree_add_item(payload_tree, hf_bundle_payload_flags, tvb,
|
|
offset, 1, FALSE);
|
|
proc_flag_tree = proto_item_add_subtree(proc_flag_item, ett_payload_flags);
|
|
proto_tree_add_boolean(proc_flag_tree, hf_bundle_payload_flags_replicate_hdr,
|
|
tvb, offset, 1, procflags);
|
|
proto_tree_add_boolean(proc_flag_tree, hf_bundle_payload_flags_xmit_report,
|
|
tvb, offset, 1, procflags);
|
|
proto_tree_add_boolean(proc_flag_tree, hf_bundle_payload_flags_discard_on_fail,
|
|
tvb, offset, 1, procflags);
|
|
proto_tree_add_boolean(proc_flag_tree, hf_bundle_payload_flags_last_header,
|
|
tvb, offset, 1, procflags);
|
|
++offset;
|
|
}
|
|
else { /*Bundle Protocol Version 5*/
|
|
int control_flags;
|
|
proto_item *block_flag_item;
|
|
proto_tree *block_flag_tree;
|
|
|
|
control_flags = evaluate_sdnv(tvb, offset, &sdnv_length);
|
|
if(control_flags & BLOCK_CONTROL_LAST_BLOCK) {
|
|
*lastheader = TRUE;
|
|
}
|
|
else {
|
|
*lastheader = FALSE;
|
|
}
|
|
block_flag_item = proto_tree_add_item(payload_tree, hf_block_control_flags, tvb,
|
|
offset, sdnv_length, FALSE);
|
|
block_flag_tree = proto_item_add_subtree(block_flag_item, ett_block_flags);
|
|
|
|
proto_tree_add_boolean(block_flag_tree, hf_block_control_replicate,
|
|
tvb, offset, sdnv_length, control_flags);
|
|
proto_tree_add_boolean(block_flag_tree, hf_block_control_transmit_status,
|
|
tvb, offset, sdnv_length, control_flags);
|
|
proto_tree_add_boolean(block_flag_tree, hf_block_control_delete_bundle,
|
|
tvb, offset, sdnv_length, control_flags);
|
|
proto_tree_add_boolean(block_flag_tree, hf_block_control_last_block,
|
|
tvb, offset, sdnv_length, control_flags);
|
|
proto_tree_add_boolean(block_flag_tree, hf_block_control_discard_block,
|
|
tvb, offset, sdnv_length, control_flags);
|
|
proto_tree_add_boolean(block_flag_tree, hf_block_control_not_processed,
|
|
tvb, offset, sdnv_length, control_flags);
|
|
proto_tree_add_boolean(block_flag_tree, hf_block_control_eid_reference,
|
|
tvb, offset, sdnv_length, control_flags);
|
|
offset += sdnv_length;
|
|
}
|
|
|
|
payload_length = evaluate_sdnv(tvb, offset, &sdnv_length);
|
|
proto_item_set_len(payload_item, 2 + sdnv_length);
|
|
|
|
if(payload_length < 0) {
|
|
proto_tree_add_text(payload_tree, tvb, offset, sdnv_length, "Payload Length: Error");
|
|
return 0;
|
|
}
|
|
proto_tree_add_text(payload_tree, tvb, offset, sdnv_length, "Payload Length: %d", payload_length);
|
|
|
|
offset += sdnv_length;
|
|
if(pri_hdr_procflags & BUNDLE_PROCFLAGS_ADMIN_MASK) {
|
|
int admin_size;
|
|
|
|
/*
|
|
* XXXX - Have not allowed for admin record spanning multiple segments!
|
|
*/
|
|
|
|
admin_size = dissect_admin_record(payload_tree, tvb, offset);
|
|
if(admin_size == 0) {
|
|
return 0;
|
|
}
|
|
}
|
|
return (payload_length + (offset - header_start));
|
|
}
|
|
|
|
/*
|
|
* Return the length of the Administrative Record or 0 if analysis fails.
|
|
*/
|
|
|
|
static int
|
|
dissect_admin_record(proto_tree *primary_tree, tvbuff_t *tvb, int offset)
|
|
{
|
|
proto_item *admin_record_item;
|
|
proto_tree *admin_record_tree;
|
|
guint8 record_type;
|
|
guint8 status;
|
|
guint8 reason;
|
|
int record_size = 0;
|
|
int sdnv_length;
|
|
int endpoint_length;
|
|
guint8 *string_ptr;
|
|
|
|
admin_record_item = proto_tree_add_text(primary_tree, tvb, offset, -1,
|
|
"Administrative Record");
|
|
admin_record_tree = proto_item_add_subtree(admin_record_item, ett_admin_record);
|
|
record_type = tvb_get_guint8(tvb, offset);
|
|
|
|
if(record_type == (0x05 << 4)) {
|
|
proto_tree_add_text(admin_record_tree, tvb, offset, 1, "Announce Record (Contact)");
|
|
return 1; /*Special case for poxy TCP Convergence Layer Announce Bundle*/
|
|
}
|
|
if(record_type & ADMIN_REC_FLAGS_FRAGMENT) {
|
|
proto_tree_add_text(admin_record_tree, tvb, offset, 1, "Record is for a Fragment");
|
|
}
|
|
else {
|
|
proto_tree_add_text(admin_record_tree,
|
|
tvb, offset, 1, "Record is not for a Fragment");
|
|
}
|
|
|
|
switch((record_type >> 4) & 0xf)
|
|
{
|
|
|
|
case ADMIN_REC_TYPE_STATUS_REPORT:
|
|
{
|
|
proto_item *status_flag_item;
|
|
proto_tree *status_flag_tree;
|
|
|
|
proto_tree_add_text(admin_record_tree, tvb, offset, 1,
|
|
"Administrative Record Type: Bundle Status Report");
|
|
++record_size; ++offset;
|
|
|
|
/* Decode Bundle Status Report Flags */
|
|
status = tvb_get_guint8(tvb, offset);
|
|
status_flag_item = proto_tree_add_item(admin_record_tree,
|
|
hf_bundle_admin_statflags, tvb, offset, 1, FALSE);
|
|
status_flag_tree = proto_item_add_subtree(status_flag_item,
|
|
ett_admin_rec_status);
|
|
proto_tree_add_boolean(status_flag_tree, hf_bundle_admin_rcvd,
|
|
tvb, offset, 1, status);
|
|
proto_tree_add_boolean(status_flag_tree, hf_bundle_admin_accepted,
|
|
tvb, offset, 1, status);
|
|
proto_tree_add_boolean(status_flag_tree, hf_bundle_admin_forwarded,
|
|
tvb, offset, 1, status);
|
|
proto_tree_add_boolean(status_flag_tree, hf_bundle_admin_delivered,
|
|
tvb, offset, 1, status);
|
|
proto_tree_add_boolean(status_flag_tree, hf_bundle_admin_deleted,
|
|
tvb, offset, 1, status);
|
|
proto_tree_add_boolean(status_flag_tree, hf_bundle_admin_acked,
|
|
tvb, offset, 1, status);
|
|
++record_size; ++offset;
|
|
|
|
reason = tvb_get_guint8(tvb, offset);
|
|
if(reason == 0) {
|
|
proto_tree_add_text(admin_record_tree, tvb, offset, 1,
|
|
"Reason Code: 0 (No Additional Information)");
|
|
}
|
|
else {
|
|
proto_tree_add_text(admin_record_tree, tvb, offset, 1,
|
|
"Reason Code: 0x%x (%s)", reason,
|
|
val_to_str(reason, status_report_reason_codes,
|
|
"Invalid"));
|
|
}
|
|
++record_size; ++offset;
|
|
if(record_type & ADMIN_REC_FLAGS_FRAGMENT) {
|
|
sdnv_length = add_sdnv_to_tree(admin_record_tree, tvb, offset,
|
|
"Fragment Offset");
|
|
if(sdnv_length <= 0) {
|
|
return 0;
|
|
}
|
|
offset += sdnv_length; record_size += sdnv_length;
|
|
sdnv_length = add_sdnv_to_tree(admin_record_tree, tvb, offset,
|
|
"Fragment Length");
|
|
if(sdnv_length <= 0) {
|
|
return 0;
|
|
}
|
|
offset += sdnv_length; record_size += sdnv_length;
|
|
}
|
|
if(status & ADMIN_STATUS_FLAGS_RECEIVED) {
|
|
sdnv_length = add_dtn_time_to_tree(admin_record_tree, tvb, offset,
|
|
"Bundle Received Time");
|
|
if(sdnv_length <= 0) {
|
|
return 0;
|
|
}
|
|
offset += sdnv_length; record_size += sdnv_length;
|
|
}
|
|
if(status & ADMIN_STATUS_FLAGS_ACCEPTED) {
|
|
sdnv_length = add_dtn_time_to_tree(admin_record_tree, tvb, offset,
|
|
"Bundle Accepted Time");
|
|
if(sdnv_length <= 0) {
|
|
return 0;
|
|
}
|
|
offset += sdnv_length; record_size += sdnv_length;
|
|
}
|
|
if(status & ADMIN_STATUS_FLAGS_FORWARDED) {
|
|
sdnv_length = add_dtn_time_to_tree(admin_record_tree, tvb, offset,
|
|
"Bundle Forwarded Time");
|
|
if(sdnv_length <= 0) {
|
|
return 0;
|
|
}
|
|
offset += sdnv_length; record_size += sdnv_length;
|
|
}
|
|
if(status & ADMIN_STATUS_FLAGS_DELIVERED) {
|
|
sdnv_length = add_dtn_time_to_tree(admin_record_tree, tvb, offset,
|
|
"Bundle Delivered Time");
|
|
if(sdnv_length <= 0) {
|
|
return 0;
|
|
}
|
|
offset += sdnv_length; record_size += sdnv_length;
|
|
}
|
|
if(status & ADMIN_STATUS_FLAGS_DELETED) {
|
|
sdnv_length = add_dtn_time_to_tree(admin_record_tree, tvb, offset,
|
|
"Bundle Deleted Time");
|
|
if(sdnv_length <= 0) {
|
|
return 0;
|
|
}
|
|
offset += sdnv_length; record_size += sdnv_length;
|
|
}
|
|
if(status & ADMIN_STATUS_FLAGS_ACKNOWLEDGED) {
|
|
sdnv_length = add_dtn_time_to_tree(admin_record_tree, tvb, offset,
|
|
"Bundle Acknowledged Time");
|
|
if(sdnv_length <= 0) {
|
|
return 0;
|
|
}
|
|
offset += sdnv_length; record_size += sdnv_length;
|
|
}
|
|
|
|
/* Get 2 SDNVs for Creation Timestamp */
|
|
sdnv_length = add_sdnv_time_to_tree(admin_record_tree, tvb, offset,
|
|
"Bundle Creation Timestamp");
|
|
if(sdnv_length <= 0) {
|
|
return 0;
|
|
}
|
|
offset += sdnv_length; record_size += sdnv_length;
|
|
sdnv_length = add_sdnv_to_tree(admin_record_tree, tvb, offset,
|
|
"Bundle Creation Timestamp Sequence");
|
|
if(sdnv_length <= 0) {
|
|
return 0;
|
|
}
|
|
offset += sdnv_length; record_size += sdnv_length;
|
|
|
|
endpoint_length = evaluate_sdnv(tvb, offset, &sdnv_length);
|
|
if(endpoint_length < 0) {
|
|
return 0;
|
|
}
|
|
proto_tree_add_text(admin_record_tree, tvb, offset, sdnv_length,
|
|
"Endpoint Length: %d", endpoint_length);
|
|
offset += sdnv_length; record_size += sdnv_length;
|
|
|
|
/*
|
|
* Endpoint name may not be null terminated. This routine is supposed
|
|
* to add the null at the end of the string buffer.
|
|
*/
|
|
string_ptr = tvb_get_ephemeral_string(tvb, offset, endpoint_length);
|
|
proto_tree_add_text(admin_record_tree, tvb, offset, endpoint_length,
|
|
"Bundle Endpoint ID: %s", string_ptr);
|
|
offset += endpoint_length; record_size += endpoint_length;
|
|
|
|
return record_size;
|
|
}
|
|
case ADMIN_REC_TYPE_CUSTODY_SIGNAL:
|
|
proto_tree_add_text(admin_record_tree, tvb, offset, 1,
|
|
"Administrative Record Type: Custody Signal");
|
|
++record_size; ++offset;
|
|
|
|
status = tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_text(admin_record_tree, tvb, offset, 1,
|
|
"Custody Transfer Succeeded Flag: %d", (status >> 7) & 0x01);
|
|
if((status & ADMIN_REC_CUSTODY_REASON_MASK) == 0) {
|
|
proto_tree_add_text(admin_record_tree, tvb, offset, 1,
|
|
"Reason Code: 0 (No Additional Information)");
|
|
}
|
|
else {
|
|
proto_tree_add_text(admin_record_tree, tvb, offset, 1,
|
|
"Reason Code: 0x%x (%s)",
|
|
status & ADMIN_REC_CUSTODY_REASON_MASK,
|
|
val_to_str(status & ADMIN_REC_CUSTODY_REASON_MASK,
|
|
custody_signal_reason_codes, "Invalid"));
|
|
}
|
|
++record_size; ++offset;
|
|
if(record_type & ADMIN_REC_FLAGS_FRAGMENT) {
|
|
sdnv_length = add_sdnv_to_tree(admin_record_tree, tvb, offset,
|
|
"Fragment Offset");
|
|
if(sdnv_length <= 0) {
|
|
return 0;
|
|
}
|
|
offset += sdnv_length; record_size += sdnv_length;
|
|
sdnv_length = add_sdnv_to_tree(admin_record_tree, tvb, offset,
|
|
"Fragment Length");
|
|
if(sdnv_length <= 0) {
|
|
return 0;
|
|
}
|
|
offset += sdnv_length; record_size += sdnv_length;
|
|
}
|
|
|
|
/* Signal Time */
|
|
sdnv_length = add_dtn_time_to_tree(admin_record_tree, tvb, offset,
|
|
"Bundle Signal Time");
|
|
if(sdnv_length <= 0) {
|
|
return 0;
|
|
}
|
|
offset += sdnv_length; record_size += sdnv_length;
|
|
|
|
/* Timestamp copy */
|
|
sdnv_length = add_sdnv_time_to_tree(admin_record_tree, tvb, offset,
|
|
"Bundle Creation Timestamp");
|
|
if(sdnv_length <= 0) {
|
|
return 0;
|
|
}
|
|
offset += sdnv_length; record_size += sdnv_length;
|
|
sdnv_length = add_sdnv_to_tree(admin_record_tree, tvb, offset,
|
|
"Bundle Creation Timestamp Sequence");
|
|
if(sdnv_length <= 0) {
|
|
return 0;
|
|
}
|
|
offset += sdnv_length; record_size += sdnv_length;
|
|
|
|
endpoint_length = evaluate_sdnv(tvb, offset, &sdnv_length);
|
|
if(endpoint_length < 0) {
|
|
return 0;
|
|
}
|
|
proto_tree_add_text(admin_record_tree, tvb, offset, sdnv_length,
|
|
"Endpoint Length: %d", endpoint_length);
|
|
offset += sdnv_length; record_size += sdnv_length;
|
|
string_ptr = tvb_get_ephemeral_string(tvb, offset, endpoint_length);
|
|
proto_tree_add_text(admin_record_tree, tvb, offset, endpoint_length,
|
|
"Bundle Endpoint ID: %s", string_ptr);
|
|
offset += endpoint_length; record_size += endpoint_length;
|
|
return record_size;
|
|
|
|
} /* End Switch */
|
|
|
|
proto_tree_add_text(admin_record_tree, tvb, offset, 1,
|
|
"Administrative Record Type: Unknown");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Return length of contact header or 0 on failure
|
|
*/
|
|
|
|
static int
|
|
dissect_contact_header(tvbuff_t *tvb, packet_info *pinfo,
|
|
proto_tree *conv_tree, proto_item *conv_item)
|
|
{
|
|
guint8 contact_hdr_flags;
|
|
proto_item *contact_hdr_flag_item;
|
|
proto_tree *contact_hdr_flag_tree;
|
|
int eid_length;
|
|
int sdnv_length;
|
|
char *sptr;
|
|
|
|
/*
|
|
* I'm going to assume that if this is a contact header, the buffer
|
|
* contains the complete header and that there are no other packets
|
|
* in the buffer.
|
|
*/
|
|
|
|
proto_tree_add_text(conv_tree, tvb, 0, 4, "Pkt Type: Contact Header");
|
|
proto_tree_add_item(conv_tree, hf_contact_hdr_version, tvb, 4, 1, FALSE);
|
|
|
|
/* Subtree to expand the bits in the Contact Header Flags */
|
|
contact_hdr_flags = tvb_get_guint8(tvb, 5);
|
|
contact_hdr_flag_item =
|
|
proto_tree_add_item(conv_tree, hf_contact_hdr_flags, tvb, 5, 1, FALSE);
|
|
contact_hdr_flag_tree =
|
|
proto_item_add_subtree(contact_hdr_flag_item, ett_contact_hdr_flags);
|
|
proto_tree_add_boolean(contact_hdr_flag_tree, hf_contact_hdr_flags_ack_req,
|
|
tvb, 5, 1, contact_hdr_flags);
|
|
proto_tree_add_boolean(contact_hdr_flag_tree, hf_contact_hdr_flags_frag_enable,
|
|
tvb, 5, 1, contact_hdr_flags);
|
|
proto_tree_add_boolean(contact_hdr_flag_tree, hf_contact_hdr_flags_nak,
|
|
tvb, 5, 1, contact_hdr_flags);
|
|
proto_tree_add_item(conv_tree, hf_contact_hdr_keep_alive, tvb, 6, 2, FALSE);
|
|
|
|
/*
|
|
* New format Contact header has length field followed by Bundle Header.
|
|
*/
|
|
|
|
eid_length = evaluate_sdnv(tvb, 8, &sdnv_length);
|
|
if(eid_length < 0) {
|
|
col_set_str(pinfo->cinfo, COL_INFO, "Protocol Error (Local EID Length)");
|
|
return 0;
|
|
}
|
|
proto_tree_add_text(conv_tree, tvb, 8, sdnv_length,
|
|
"Local EID Length: %d", eid_length);
|
|
proto_item_set_len(conv_item, sdnv_length + eid_length + 8);
|
|
|
|
sptr = (char *) tvb_get_ephemeral_string(tvb, sdnv_length + 8, eid_length);
|
|
proto_tree_add_text(conv_tree, tvb, sdnv_length + 8, eid_length, "Local EID: %s", sptr);
|
|
|
|
return(sdnv_length + eid_length + 8);
|
|
}
|
|
|
|
static int
|
|
display_metadata_block(proto_tree *tree, tvbuff_t *tvb, int offset, gboolean *lastheader)
|
|
{
|
|
proto_item *block_item;
|
|
proto_tree *block_tree;
|
|
int sdnv_length;
|
|
int header_start;
|
|
int block_length;
|
|
guint8 type;
|
|
int control_flags;
|
|
|
|
type = tvb_get_guint8(tvb, offset);
|
|
header_start = offset; /*Used to compute total payload length*/
|
|
offset = 0;
|
|
block_item = proto_tree_add_text(tree, tvb, header_start + offset, -1, "Metadata Block");
|
|
block_tree = proto_item_add_subtree(block_item, ett_metadata_hdr);
|
|
|
|
proto_tree_add_text(block_tree, tvb, header_start + offset, 1, "Block Type: %d", type);
|
|
++offset;
|
|
|
|
control_flags = evaluate_sdnv(tvb, header_start + offset, &sdnv_length);
|
|
if(control_flags & BLOCK_CONTROL_LAST_BLOCK) {
|
|
*lastheader = TRUE;
|
|
}
|
|
else {
|
|
*lastheader = FALSE;
|
|
}
|
|
proto_tree_add_text(block_tree, tvb, header_start + offset, 1, "Block Flags: 0x%x", control_flags);
|
|
offset += sdnv_length;
|
|
|
|
block_length = evaluate_sdnv(tvb, header_start + offset, &sdnv_length);
|
|
proto_item_set_len(block_item, offset + sdnv_length + block_length);
|
|
if(block_length < 0) {
|
|
proto_tree_add_text(block_tree, tvb, header_start + offset, sdnv_length, "Metadata Block Length: Error");
|
|
return 0;
|
|
}
|
|
proto_tree_add_text(block_tree, tvb, header_start + offset, sdnv_length, "Block Length: %d", block_length);
|
|
offset += (sdnv_length + block_length);
|
|
|
|
return offset;
|
|
}
|
|
|
|
/*
|
|
* SDNV has a zero in high-order bit position of last byte. The high-order
|
|
* bit of all preceding bytes is set to one. This returns the numeric value
|
|
* in an integer and sets the value of the second argument to the number of
|
|
* bytes used to code the SDNV. A -1 is returned if the evaluation fails
|
|
* (value exceeds maximum for signed integer). 0 is an acceptable value.
|
|
*/
|
|
|
|
#define SDNV_MASK 0x7f
|
|
|
|
/*3rd arg is number of bytes in field (returned)*/
|
|
int
|
|
evaluate_sdnv(tvbuff_t *tvb, int offset, int *bytecount)
|
|
{
|
|
int value = 0;
|
|
guint8 curbyte;
|
|
|
|
*bytecount = 0;
|
|
|
|
/*
|
|
* Get 1st byte and continue to get them while high-order bit is 1
|
|
*/
|
|
|
|
while((curbyte = tvb_get_guint8(tvb, offset)) & ~SDNV_MASK) {
|
|
if(*bytecount >= (int) sizeof(int)) {
|
|
*bytecount = 0;
|
|
return -1;
|
|
}
|
|
value = value << 7;
|
|
value |= (curbyte & SDNV_MASK);
|
|
++offset;
|
|
++*bytecount;
|
|
}
|
|
|
|
/*
|
|
* Add in the byte whose high-order bit is 0 (last one)
|
|
*/
|
|
|
|
value = value << 7;
|
|
value |= (curbyte & SDNV_MASK);
|
|
++*bytecount;
|
|
return value;
|
|
}
|
|
|
|
/* Special Function to evaluate 64 bit SDNVs */
|
|
gint64
|
|
evaluate_sdnv_64(tvbuff_t *tvb, int offset, int *bytecount)
|
|
{
|
|
gint64 value = 0;
|
|
guint8 curbyte;
|
|
|
|
*bytecount = 0;
|
|
|
|
/*
|
|
* Get 1st byte and continue to get them while high-order bit is 1
|
|
*/
|
|
|
|
while((curbyte = tvb_get_guint8(tvb, offset)) & ~SDNV_MASK) {
|
|
if(*bytecount >= (int) sizeof(gint64)) {
|
|
*bytecount = 0;
|
|
return -1;
|
|
}
|
|
value = value << 7;
|
|
value |= (curbyte & SDNV_MASK);
|
|
++offset;
|
|
++*bytecount;
|
|
}
|
|
|
|
/*
|
|
* Add in the byte whose high-order bit is 0 (last one)
|
|
*/
|
|
|
|
value = value << 7;
|
|
value |= (curbyte & SDNV_MASK);
|
|
++*bytecount;
|
|
return value;
|
|
}
|
|
|
|
static int
|
|
add_sdnv_to_tree(proto_tree *tree, tvbuff_t *tvb, int offset, const char *field_id)
|
|
{
|
|
int sdnv_length;
|
|
int sdnv_value;
|
|
|
|
sdnv_value = evaluate_sdnv(tvb, offset, &sdnv_length);
|
|
if(sdnv_value < 0) {
|
|
return 0;
|
|
}
|
|
proto_tree_add_text(tree, tvb, offset, sdnv_length, "%s: %d", field_id, sdnv_value);
|
|
return sdnv_length;
|
|
}
|
|
|
|
/*
|
|
* Adds the result of 2 SDNVs to tree: First SDNV is seconds, next is nanoseconds.
|
|
* Returns bytes in both SDNVs or 0 if something goes wrong.
|
|
*/
|
|
static int
|
|
add_dtn_time_to_tree(proto_tree *tree, tvbuff_t *tvb, int offset, const char *field_id)
|
|
{
|
|
int sdnv_length, sdnv2_length;
|
|
int sdnv_value;
|
|
time_t time_since_2000;
|
|
char *time_string;
|
|
|
|
sdnv_value = evaluate_sdnv(tvb, offset, &sdnv_length);
|
|
if(sdnv_value < 0) {
|
|
return 0;
|
|
}
|
|
time_since_2000 = (time_t) (sdnv_value + 946684800);
|
|
time_string = abs_time_secs_to_str(time_since_2000, ABSOLUTE_TIME_LOCAL, TRUE);
|
|
proto_tree_add_text(tree, tvb, offset, sdnv_length,
|
|
"%s (sec): %d [%s]", field_id, sdnv_value, time_string);
|
|
offset += sdnv_length;
|
|
|
|
sdnv_value = evaluate_sdnv(tvb, offset, &sdnv2_length);
|
|
if(sdnv_value < 0) {
|
|
return 0;
|
|
}
|
|
proto_tree_add_text(tree, tvb, offset, sdnv2_length,
|
|
"%s (ns): %d", field_id, sdnv_value);
|
|
return (sdnv_length + sdnv2_length);
|
|
}
|
|
|
|
/*
|
|
* Adds the result of SDNV which is a time since 2000 to tree.
|
|
* Returns bytes in SDNV or 0 if something goes wrong.
|
|
*/
|
|
static int
|
|
add_sdnv_time_to_tree(proto_tree *tree, tvbuff_t *tvb, int offset, const char *field_id)
|
|
{
|
|
int sdnv_length;
|
|
int sdnv_value;
|
|
time_t time_since_2000;
|
|
char *time_string;
|
|
|
|
sdnv_value = evaluate_sdnv(tvb, offset, &sdnv_length);
|
|
if(sdnv_value < 0) {
|
|
return 0;
|
|
}
|
|
time_since_2000 = (time_t) (sdnv_value + 946684800);
|
|
time_string = abs_time_secs_to_str(time_since_2000, ABSOLUTE_TIME_LOCAL, TRUE);
|
|
proto_tree_add_text(tree, tvb, offset, sdnv_length,
|
|
"%s: %d [%s]", field_id, sdnv_value, time_string);
|
|
return sdnv_length;
|
|
}
|
|
|
|
static void
|
|
bundle_defragment_init(void) {
|
|
fragment_table_init(&msg_fragment_table);
|
|
reassembled_table_init(&msg_reassembled_table);
|
|
}
|
|
|
|
void
|
|
proto_register_bundle(void)
|
|
{
|
|
|
|
static hf_register_info hf[] = {
|
|
{&hf_bundle_pdu_version,
|
|
{"Bundle Version", "bundle.version",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_contact_hdr_version,
|
|
{"Version", "bundle.tcp_conv.contact_hdr.version",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_contact_hdr_flags,
|
|
{"Flags", "bundle.tcp_conv.contact_hdr.flags",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_contact_hdr_flags_ack_req,
|
|
{"Bundle Acks Requested", "bundle.tcp_conv.contact_hdr.flags.ackreq",
|
|
FT_BOOLEAN, 8, NULL, TCP_CONV_BUNDLE_ACK_FLAG, NULL, HFILL}
|
|
},
|
|
{&hf_contact_hdr_flags_frag_enable,
|
|
{"Reactive Fragmentation Enabled", "bundle.tcp_conv.contact_hdr.flags.fragen",
|
|
FT_BOOLEAN, 8, NULL, TCP_CONV_REACTIVE_FRAG_FLAG, NULL, HFILL}
|
|
},
|
|
{&hf_contact_hdr_flags_nak,
|
|
{"Support Negative Acknowledgements", "bundle.tcp_conv.contact_hdr.flags.nak",
|
|
FT_BOOLEAN, 8, NULL, TCP_CONV_CONNECTOR_RCVR_FLAG, NULL, HFILL}
|
|
},
|
|
{&hf_contact_hdr_keep_alive,
|
|
{"Keep Alive", "bundle.tcp_conv.contact_hdr.keep_alive",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_tcp_convergence_data_procflags,
|
|
{"TCP Convergence Data Flags", "bundle.tcp_conv.data.proc.flag",
|
|
FT_UINT8, BASE_HEX, NULL, TCP_CONVERGENCE_DATA_FLAGS, NULL, HFILL}
|
|
},
|
|
{&hf_tcp_convergence_data_procflags_start,
|
|
{"Segment contains start of bundle", "bundle.tcp_conv.data.proc.start",
|
|
FT_BOOLEAN, 8, NULL, TCP_CONVERGENCE_DATA_START_FLAG, NULL, HFILL}
|
|
},
|
|
{&hf_tcp_convergence_data_procflags_end,
|
|
{"Segment contains end of Bundle", "bundle.tcp_conv.data.proc.end",
|
|
FT_BOOLEAN, 8, NULL, TCP_CONVERGENCE_DATA_END_FLAG, NULL, HFILL}
|
|
},
|
|
{&hf_tcp_convergence_shutdown_flags,
|
|
{"TCP Convergence Shutdown Flags", "bundle.tcp_conv.shutdown.flags",
|
|
FT_UINT8, BASE_HEX, NULL, TCP_CONVERGENCE_SHUTDOWN_FLAGS, NULL, HFILL}
|
|
},
|
|
{&hf_tcp_convergence_shutdown_flags_reason,
|
|
{"Shutdown includes Reason Code", "bundle.tcp_conv.shutdown.reason.flag",
|
|
FT_BOOLEAN, 8, NULL, TCP_CONVERGENCE_SHUTDOWN_REASON, NULL, HFILL}
|
|
},
|
|
{&hf_tcp_convergence_shutdown_flags_delay,
|
|
{"Shutdown includes Reconnection Delay", "bundle.tcp_conv.shutdown.delay.flag",
|
|
FT_BOOLEAN, 8, NULL, TCP_CONVERGENCE_SHUTDOWN_DELAY, NULL, HFILL}
|
|
},
|
|
{&hf_tcp_convergence_shutdown_reason,
|
|
{"Shutdown Reason Code", "bundle.tcp_conv.shutdown.reason",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_tcp_convergence_shutdown_delay,
|
|
{"Shutdown Reconnection Delay", "bundle.tcp_conv.shutdown.delay",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
|
|
{&hf_msg_fragments,
|
|
{"Message Fragments", "bundle.msg.fragments",
|
|
FT_NONE, BASE_NONE, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_msg_fragment,
|
|
{"Message Fragment", "bundle.msg.fragment",
|
|
FT_FRAMENUM, BASE_NONE, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_msg_fragment_overlap,
|
|
{"Message fragment overlap", "bundle.msg.fragment.overlap",
|
|
FT_BOOLEAN, BASE_NONE, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_msg_fragment_overlap_conflicts,
|
|
{"Message fragment overlapping with conflicting data",
|
|
"bundle.msg.fragment.overlap.conflicts",
|
|
FT_BOOLEAN, BASE_NONE, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_msg_fragment_multiple_tails,
|
|
{"Message has multiple tails", "bundle.msg.fragment.multiple_tails",
|
|
FT_BOOLEAN, BASE_NONE, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_msg_fragment_too_long_fragment,
|
|
{"Message fragment too long", "bundle.msg.fragment.too_long_fragment",
|
|
FT_BOOLEAN, BASE_NONE, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_msg_fragment_error,
|
|
{"Message defragmentation error", "bundle.msg.fragment.error",
|
|
FT_FRAMENUM, BASE_NONE, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_msg_fragment_count,
|
|
{"Message fragment count", "bundle.msg.fragment.count",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_msg_reassembled_in,
|
|
{"Reassembled in", "bundle.msg.reassembled.in",
|
|
FT_FRAMENUM, BASE_NONE, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_msg_reassembled_length,
|
|
{"Reassembled DTN length", "bundle.msg.reassembled.length",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_procflags,
|
|
{"Primary Header Processing Flags", "bundle.primary.proc.flag",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_procflags_fragment,
|
|
{"Bundle is a Fragment", "bundle.primary.proc.frag",
|
|
FT_BOOLEAN, 8, NULL, BUNDLE_PROCFLAGS_FRAG_MASK, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_procflags_admin,
|
|
{"Administrative Record", "bundle.primary.proc.admin",
|
|
FT_BOOLEAN, 8, NULL, BUNDLE_PROCFLAGS_ADMIN_MASK, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_procflags_dont_fragment,
|
|
{"Do Not Fragment Bundle", "bundle.primary.proc.dontfrag",
|
|
FT_BOOLEAN, 8, NULL, BUNDLE_PROCFLAGS_DONTFRAG_MASK, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_procflags_cust_xfer_req,
|
|
{"Request Custody Transfer", "bundle.primary.proc.xferreq",
|
|
FT_BOOLEAN, 8, NULL, BUNDLE_PROCFLAGS_XFERREQ_MASK, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_procflags_dest_singleton,
|
|
{"Destination is Singleton", "bundle.primary.proc.single",
|
|
FT_BOOLEAN, 8, NULL, BUNDLE_PROCFLAGS_SINGLETON_MASK, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_procflags_application_ack,
|
|
{"Request Acknowledgement by Application", "bundle.primary.proc.ack",
|
|
FT_BOOLEAN, 8, NULL, BUNDLE_PROCFLAGS_APP_ACK_MASK, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_control_flags,
|
|
{"Bundle Processing Control Flags", "bundle.primary.proc.flag",
|
|
FT_UINT64, BASE_HEX, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_procflags_general,
|
|
{"General Flags", "bundle.primary.proc.gen",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_procflags_cos,
|
|
{"Cloass of Service Flags", "bundle.primary.proc.cos",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_procflags_status,
|
|
{"Status Report Flags", "bundle.primary.proc.status",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_cosflags,
|
|
{"Primary Header COS Flags", "bundle.primary.cos.flags",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_cosflags_priority,
|
|
{"Priority", "bundle.primary.cos.priority",
|
|
FT_UINT8, BASE_DEC, NULL, BUNDLE_COSFLAGS_PRIORITY_MASK, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_srrflags,
|
|
{"Primary Header Report Request Flags", "bundle.primary.srr.flag",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_srrflags_report_receipt,
|
|
{"Request Reception Report", "bundle.primary.srr.report",
|
|
FT_BOOLEAN, 8, NULL, BUNDLE_SRRFLAGS_REPORT_MASK, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_srrflags_report_cust_accept,
|
|
{"Request Report of Custody Acceptance", "bundle.primary.srr.custaccept",
|
|
FT_BOOLEAN, 8, NULL, BUNDLE_SRRFLAGS_CUSTODY_MASK, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_srrflags_report_forward,
|
|
{"Request Report of Bundle Forwarding", "bundle.primary.srr.forward",
|
|
FT_BOOLEAN, 8, NULL, BUNDLE_SRRFLAGS_FORWARD_MASK, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_srrflags_report_delivery,
|
|
{"Request Report of Bundle Delivery", "bundle.primary.srr.delivery",
|
|
FT_BOOLEAN, 8, NULL, BUNDLE_SRRFLAGS_DELIVERY_MASK, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_srrflags_report_deletion,
|
|
{"Request Report of Bundle Deletion", "bundle.primary.srr.delete",
|
|
FT_BOOLEAN, 8, NULL, BUNDLE_SRRFLAGS_DELETION_MASK, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_srrflags_report_ack,
|
|
{"Request Report of Application Ack", "bundle.primary.srr.ack",
|
|
FT_BOOLEAN, 8, NULL, BUNDLE_SRRFLAGS_ACK_MASK, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_primary_header_len,
|
|
{"Bundle Header Length", "bundle.primary.len",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_dest_scheme_offset,
|
|
{"Destination Scheme Offset", "bundle.primary.destschemeoff",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_dest_ssp_offset,
|
|
{"Destination SSP Offset", "bundle.primary.destssspoff",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_source_scheme_offset,
|
|
{"Source Scheme Offset", "bundle.primary.srcschemeoff",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_source_ssp_offset,
|
|
{"Source SSP Offset", "bundle.primary.srcsspoff",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_report_scheme_offset,
|
|
{"Report Scheme Offset", "bundle.primary.rptschemeoff",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_report_ssp_offset,
|
|
{"Report SSP Offset", "bundle.primary.rptsspoff",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_cust_scheme_offset,
|
|
{"Custodian Scheme Offset", "bundle.primary.custschemeoff",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_cust_ssp_offset,
|
|
{"Custodian SSP Offset", "bundle.primary.custsspoff",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_dest_scheme,
|
|
{"Destination Scheme", "bundle.primary.destination_scheme",
|
|
FT_STRINGZ, BASE_NONE, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_dest_ssp,
|
|
{"Destination", "bundle.primary.destination",
|
|
FT_STRINGZ, BASE_NONE, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_source_scheme,
|
|
{"Source Scheme", "bundle.primary.source_scheme",
|
|
FT_STRINGZ, BASE_NONE, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_source_ssp,
|
|
{"Source", "bundle.primary.source",
|
|
FT_STRINGZ, BASE_NONE, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_report_scheme,
|
|
{"Report Scheme", "bundle.primary.report_scheme",
|
|
FT_STRINGZ, BASE_NONE, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_report_ssp,
|
|
{"Report", "bundle.primary.report",
|
|
FT_STRINGZ, BASE_NONE, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_custodian_scheme,
|
|
{"Custodian Scheme", "bundle.primary.custodian_scheme",
|
|
FT_STRINGZ, BASE_NONE, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_custodian_ssp,
|
|
{"Custodian", "bundle.primary.custodian",
|
|
FT_STRINGZ, BASE_NONE, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_creation_timestamp,
|
|
{"Creation Timestamp", "bundle.primary.timestamp",
|
|
FT_UINT64, BASE_HEX, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_lifetime,
|
|
{"Lifetime", "bundle.primary.lifetime",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_payload_flags,
|
|
{"Payload Header Processing Flags", "bundle.payload.proc.flag",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_payload_flags_replicate_hdr,
|
|
{"Replicate Header in Every Fragment", "bundle.payload.proc.replicate",
|
|
FT_BOOLEAN, 8, NULL, PAYLOAD_PROCFLAGS_REPLICATE_MASK, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_payload_flags_xmit_report,
|
|
{"Report if Can't Process Header", "bundle.payload.proc.report",
|
|
FT_BOOLEAN, 8, NULL, PAYLOAD_PROCFLAGS_XMIT_STATUS, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_payload_flags_discard_on_fail,
|
|
{"Discard if Can't Process Header", "bundle.payload.proc.discard",
|
|
FT_BOOLEAN, 8, NULL, PAYLOAD_PROCFLAGS_DISCARD_FAILURE, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_payload_flags_last_header,
|
|
{"Last Header", "bundle.payload.proc.lastheader",
|
|
FT_BOOLEAN, 8, NULL, PAYLOAD_PROCFLAGS_LAST_HEADER, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_admin_statflags,
|
|
{"Administrative Record Status Flags", "bundle.admin.status.flag",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_admin_rcvd,
|
|
{"Reporting Node Received Bundle", "bundle.admin.status.rcvd",
|
|
FT_BOOLEAN, 8, NULL, ADMIN_STATUS_FLAGS_RECEIVED, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_admin_accepted,
|
|
{"Reporting Node Accepted Custody", "bundle.admin.status.accept",
|
|
FT_BOOLEAN, 8, NULL, ADMIN_STATUS_FLAGS_ACCEPTED, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_admin_forwarded,
|
|
{"Reporting Node Forwarded Bundle", "bundle.admin.status.forward",
|
|
FT_BOOLEAN, 8, NULL, ADMIN_STATUS_FLAGS_FORWARDED, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_admin_delivered,
|
|
{"Reporting Node Delivered Bundle", "bundle.admin.status.delivered",
|
|
FT_BOOLEAN, 8, NULL, ADMIN_STATUS_FLAGS_DELIVERED, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_admin_deleted,
|
|
{"Reporting Node Deleted Bundle", "bundle.admin.status.delete",
|
|
FT_BOOLEAN, 8, NULL, ADMIN_STATUS_FLAGS_DELETED, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_admin_acked,
|
|
{"Acknowledged by Application", "bundle.admin.status.ack",
|
|
FT_BOOLEAN, 8, NULL, ADMIN_STATUS_FLAGS_ACKNOWLEDGED, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_admin_receipt_time,
|
|
{"Time of Receipt", "bundle.admin.status.receipttime",
|
|
FT_UINT64, BASE_HEX, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_admin_accept_time,
|
|
{"Time of Custody Acceptance", "bundle.admin.status.accepttime",
|
|
FT_UINT64, BASE_HEX, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_admin_forward_time,
|
|
{"Time of Forwarding", "bundle.admin.status.forwardtime",
|
|
FT_UINT64, BASE_HEX, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_admin_delivery_time,
|
|
{"Time of Delivery", "bundle.admin.status.deliverytime",
|
|
FT_UINT64, BASE_HEX, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_admin_delete_time,
|
|
{"Time of Deletion", "bundle.admin.status.deletetime",
|
|
FT_UINT64, BASE_HEX, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_admin_ack_time,
|
|
{"Time of Acknowledgement", "bundle.admin.status.acktime",
|
|
FT_UINT64, BASE_HEX, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_admin_timestamp_copy,
|
|
{"Copy of Creation Timestamp", "bundle.admin.status.timecopy",
|
|
FT_UINT64, BASE_HEX, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_bundle_admin_signal_time,
|
|
{"Time of Signal", "bundle.admin.signal.time",
|
|
FT_UINT64, BASE_HEX, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_block_control_flags,
|
|
{"Block Processing Control Flags", "bundle.block.control.flags",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL}
|
|
},
|
|
{&hf_block_control_replicate,
|
|
{"Replicate Block in Every Fragment", "bundle.block.control.replicate",
|
|
FT_BOOLEAN, 8, NULL, BLOCK_CONTROL_REPLICATE, NULL, HFILL}
|
|
},
|
|
{&hf_block_control_transmit_status,
|
|
{"Transmit Status if Block Can't be Processeed", "bundle.block.control.status",
|
|
FT_BOOLEAN, 8, NULL, BLOCK_CONTROL_TRANSMIT_STATUS, NULL, HFILL}
|
|
},
|
|
{&hf_block_control_delete_bundle,
|
|
{"Delete Bundle if Block Can't be Processeed", "bundle.block.control.delete",
|
|
FT_BOOLEAN, 8, NULL, BLOCK_CONTROL_DELETE_BUNDLE, NULL, HFILL}
|
|
},
|
|
{&hf_block_control_last_block,
|
|
{"Last Block", "bundle.block.control.last",
|
|
FT_BOOLEAN, 8, NULL, BLOCK_CONTROL_LAST_BLOCK, NULL, HFILL}
|
|
},
|
|
{&hf_block_control_discard_block,
|
|
{"Discard Block If Can't Process", "bundle.block.control.discard",
|
|
FT_BOOLEAN, 8, NULL, BLOCK_CONTROL_DISCARD_BLOCK, NULL, HFILL}
|
|
},
|
|
{&hf_block_control_not_processed,
|
|
{"Block Was Forwarded Without Processing", "bundle.block.control.process",
|
|
FT_BOOLEAN, 8, NULL, BLOCK_CONTROL_NOT_PROCESSED, NULL, HFILL}
|
|
},
|
|
{&hf_block_control_eid_reference,
|
|
{"Block Contains an EID-reference Field", "bundle.block.control.eid",
|
|
FT_BOOLEAN, 8, NULL, BLOCK_CONTROL_EID_REFERENCE, NULL, HFILL}
|
|
}
|
|
};
|
|
|
|
static gint *ett[] = {
|
|
&ett_bundle,
|
|
&ett_tcp_conv,
|
|
&ett_tcp_conv_hdr,
|
|
&ett_msg_fragment,
|
|
&ett_msg_fragments,
|
|
&ett_bundle_hdr,
|
|
&ett_primary_hdr,
|
|
&ett_proc_flags,
|
|
&ett_gen_flags,
|
|
&ett_cos_flags,
|
|
&ett_srr_flags,
|
|
&ett_dictionary,
|
|
&ett_payload_hdr,
|
|
&ett_payload_flags,
|
|
&ett_block_flags,
|
|
&ett_contact_hdr_flags,
|
|
&ett_conv_flags,
|
|
&ett_shutdown_flags,
|
|
&ett_admin_record,
|
|
&ett_admin_rec_status,
|
|
&ett_metadata_hdr
|
|
};
|
|
|
|
module_t *bundle_module;
|
|
|
|
proto_bundle = proto_register_protocol (
|
|
"Bundle Protocol",
|
|
"Bundle",
|
|
"bundle"
|
|
);
|
|
bundle_module = prefs_register_protocol(proto_bundle, proto_reg_handoff_bundle);
|
|
|
|
proto_tcp_conv = proto_register_protocol (
|
|
"DTN TCP Convergence Layer Protocol",
|
|
"TCPCL",
|
|
"tcpcl"
|
|
);
|
|
|
|
prefs_register_uint_preference(bundle_module, "tcp.port",
|
|
"Bundle Protocol TCP Port",
|
|
"TCP Port to Accept Bundle Protocol Connections",
|
|
10,
|
|
&bundle_tcp_port);
|
|
|
|
prefs_register_uint_preference(bundle_module, "udp.port",
|
|
"Bundle Protocol UDP Port",
|
|
"UDP Port to Accept Bundle Protocol Connections",
|
|
10,
|
|
&bundle_udp_port);
|
|
|
|
proto_register_field_array(proto_bundle, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
register_init_routine(bundle_defragment_init);
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_bundle(void)
|
|
{
|
|
static dissector_handle_t tcp_bundle_handle;
|
|
static dissector_handle_t udp_bundle_handle;
|
|
static guint tcp_port;
|
|
static guint udp_port;
|
|
|
|
static int Initialized = FALSE;
|
|
|
|
if (!Initialized) {
|
|
tcp_bundle_handle = create_dissector_handle(dissect_tcp_bundle, proto_bundle);
|
|
udp_bundle_handle = create_dissector_handle(dissect_udp_bundle, proto_bundle);
|
|
Initialized = TRUE;
|
|
}
|
|
else {
|
|
dissector_delete_uint("tcp.port", tcp_port, tcp_bundle_handle);
|
|
dissector_delete_uint("udp.port", udp_port, udp_bundle_handle);
|
|
}
|
|
tcp_port = bundle_tcp_port;
|
|
udp_port = bundle_udp_port;
|
|
dissector_add_uint("tcp.port", tcp_port, tcp_bundle_handle);
|
|
dissector_add_uint("udp.port", udp_port, udp_bundle_handle);
|
|
}
|