forked from osmocom/wireshark
Initial BXXP dissector ...
Lots more work to be done. svn path=/trunk/; revision=2384
This commit is contained in:
Richard Sharpe
parent
8afa787b0e
commit
8d0ca23802
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@ -1,7 +1,7 @@
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# Makefile.am
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# Automake file for Ethereal
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#
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# $Id: Makefile.am,v 1.224 2000/08/30 02:58:24 gram Exp $
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# $Id: Makefile.am,v 1.225 2000/08/30 12:42:30 sharpe Exp $
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#
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# Ethereal - Network traffic analyzer
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# By Gerald Combs <gerald@zing.org>
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@ -46,6 +46,7 @@ DISSECTOR_SOURCES = \
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packet-bootp.c \
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packet-bootparams.c \
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packet-bpdu.c \
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packet-bxxp.c \
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packet-cdp.c \
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packet-cgmp.c \
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packet-clip.c \
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@ -0,0 +1,632 @@
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/* packet-bxxp.c
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* Routines for BXXP packet disassembly
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*
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* $Id: packet-bxxp.c,v 1.1 2000/08/30 12:42:31 sharpe Exp $
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*
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* Copyright (c) 2000 by Richard Sharpe <rsharpe@ns.aus.com>
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs
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* Copyright 1999 Gerald Combs
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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 HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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#ifdef HAVE_NETINET_IN_H
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#include <netinet/in.h>
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <time.h>
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#include <glib.h>
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#include <string.h>
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#include "packet.h"
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#include "resolv.h"
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#include "prefs.h"
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#define TCP_PORT_BXXP 10288
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void proto_reg_handoff_bxxp(void);
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static int proto_bxxp = -1;
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static int hf_bxxp_req = -1;
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static int hf_bxxp_rsp = -1;
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static int hf_bxxp_seq = -1;
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static int hf_bxxp_end = -1; /* Do we need this one? */
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static int hf_bxxp_complete = -1; /* More data follows */
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static int hf_bxxp_intermediate = -1; /* No More data follows */
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static int hf_bxxp_serial = -1;
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static int hf_bxxp_seqno = -1;
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static int hf_bxxp_size = -1;
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static int hf_bxxp_channel = -1;
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static int hf_bxxp_status = -1;
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static int hf_bxxp_positive = -1;
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static int hf_bxxp_negative = -1;
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static int hf_bxxp_ackno = -1;
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static int hf_bxxp_window = -1;
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static int ett_bxxp = -1;
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static int ett_mime_header = -1;
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static int ett_header = -1;
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static int ett_trailer = -1;
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static int tcp_port = 0;
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/* Get the state of the more flag ... */
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#define BXXP_VIOL 0
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#define BXXP_INTERMEDIATE 1
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#define BXXP_COMPLETE 2
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int bxxp_get_more(char more)
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{
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if (more == '.')
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return BXXP_COMPLETE;
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else if (more == '*')
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return BXXP_INTERMEDIATE;
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return BXXP_VIOL;
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}
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void
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dissect_bxxp_more(const u_char *pd, int offset, frame_data *fd,
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proto_tree *tree)
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{
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switch (bxxp_get_more(pd[offset])) {
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case BXXP_COMPLETE:
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proto_tree_add_boolean_hidden(tree, hf_bxxp_complete, NullTVB, offset, 1, TRUE);
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proto_tree_add_text(tree, NullTVB, offset, 1, "More: Complete");
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break;
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case BXXP_INTERMEDIATE:
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proto_tree_add_boolean_hidden(tree, hf_bxxp_intermediate, NullTVB, offset, 1, TRUE);
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proto_tree_add_text(tree, NullTVB, offset, 1, "More: Intermediate");
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break;
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default:
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fprintf(stderr, "Error from bxxp_get_more ...\n");
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break;
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}
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}
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void dissect_bxxp_status(const u_char *pd, int offset, frame_data *fd,
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proto_tree *tree)
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{
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switch(pd[offset]) {
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case '+':
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proto_tree_add_boolean_hidden(tree, hf_bxxp_positive, NullTVB, offset, 1, TRUE);
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proto_tree_add_text(tree, NullTVB, offset, 1, "Status: Positive");
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break;
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case '-':
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proto_tree_add_boolean_hidden(tree, hf_bxxp_negative, NullTVB, offset, 1, TRUE);
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proto_tree_add_text(tree, NullTVB, offset, 1, "Status: Negative");
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break;
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default: /* Proto violation: FIXME */
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break;
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}
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}
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int num_len(const u_char *pd, int offset)
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{
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int i = 0;
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/* FIXME: END_OF_FRAME needed here ... */
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while (isdigit(pd[offset + i])) i++;
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return i;
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}
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/* Get a MIME header ... FIXME: END_OF_DATA */
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int header_len(const u_char *pd, int offset)
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{
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int i = 0;
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while (pd[offset + i] != 0x0d && pd[offset + i + 1] != 0x0a) i++;
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return i;
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}
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int
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dissect_bxxp_mime_header(const u_char *pd, int offset, frame_data *fd,
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proto_tree *tree)
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{
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proto_tree *ti, *mime_tree;
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int mime_length = header_len(pd, offset);
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ti = proto_tree_add_text(tree, NullTVB, offset, mime_length + 2, "Mime header: %s", format_text(pd + offset, mime_length + 2));
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mime_tree = proto_item_add_subtree(ti, ett_mime_header);
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if (mime_length == 0) { /* Default header */
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proto_tree_add_text(mime_tree, NullTVB, offset, 2, "Default values");
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}
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else { /* FIXME: Process the headers */
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}
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return mime_length + 2; /* FIXME: Check that the CRLF is there */
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}
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int
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dissect_bxxp_int(const u_char *pd, int offset, frame_data *fd,
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proto_tree *tree, int hf, int *val)
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{
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int ival, i = num_len(pd, offset);
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sscanf(pd + offset, "%d", &ival); /* FIXME: Dangerous */
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proto_tree_add_uint(tree, hf, NullTVB, offset, i, ival);
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*val = ival; /* Return the value */
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return i;
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}
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int
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check_crlf(const u_char *pd, int offset)
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{
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/* FIXME: Check END_OF_FRAME */
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return(pd[offset] == 0x0d && pd[offset + 1] == 0x0a);
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}
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static int global_bxxp_tcp_port = TCP_PORT_BXXP;
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/* Build the tree */
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int
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dissect_bxxp_tree(const u_char *pd, int offset, packet_info *pinfo,
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proto_tree *tree)
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{
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proto_tree *bxxp_tree, *ti, *hdr;
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int st_offset, serial, seqno, size, channel, ackno, window;
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char *cmd = pd + offset;
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st_offset = offset;
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if (strncmp(pd+offset, "REQ ", 4) == 0) {
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/* FIXME: Fix the header length */
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ti = proto_tree_add_text(tree, NullTVB, offset, header_len(pd, offset) + 2, "Header");
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hdr = proto_item_add_subtree(ti, ett_header);
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proto_tree_add_boolean_hidden(hdr, hf_bxxp_req, NullTVB, offset, 3, TRUE);
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proto_tree_add_text(hdr, NullTVB, offset, 3, "Command: REQ");
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offset += 3;
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if (pd[offset] != ' ') { /* Protocol violation */
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/* Hmm, FIXME ... Add some code here ... */
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}
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offset += 1;
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/* Insert the more elements ... */
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dissect_bxxp_more(pd, offset, pinfo->fd, hdr);
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offset += 1;
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/* Check the space ... */
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offset += 1;
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/* Dissect the serial */
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offset += dissect_bxxp_int(pd, offset, pinfo->fd, hdr, hf_bxxp_serial, &serial);
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/* skip the space */
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offset += 1;
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/* now for the seqno */
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offset += dissect_bxxp_int(pd, offset, pinfo->fd, hdr, hf_bxxp_seqno, &seqno);
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/* skip the space */
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offset += 1;
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offset += dissect_bxxp_int(pd, offset, pinfo->fd, hdr, hf_bxxp_size, &size);
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/* Check the space */
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offset += 1;
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/* Get the channel */
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offset += dissect_bxxp_int(pd, offset, pinfo->fd, hdr, hf_bxxp_channel, &channel);
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if (check_crlf(pd, offset)) {
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proto_tree_add_text(hdr, NullTVB, offset, 2, "Terminator: CRLF");
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}
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else { /* Protocol violation */
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/* FIXME: implement */
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}
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offset += 2;
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/* Insert MIME header ... */
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offset += dissect_bxxp_mime_header(pd, offset, pinfo->fd, hdr);
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/* Now for the payload, if any */
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if (END_OF_FRAME > 0) { /* Dissect what is left as payload */
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int pl_size = MIN(size, END_OF_FRAME);
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/* Except, check the payload length, and only dissect that much */
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proto_tree_add_text(tree, NullTVB, offset, pl_size, "Payload: %s", format_text(pd + offset, pl_size));
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offset += pl_size;
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}
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/* If anything else left, dissect it ... As what? */
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if (END_OF_FRAME > 0)
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offset += dissect_bxxp_tree(pd, offset, pinfo->fd, tree);
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} else if (strncmp(pd+offset, "RSP ", 4) == 0) {
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/* FIXME: Fix the header length */
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ti = proto_tree_add_text(tree, NullTVB, offset, header_len(pd, offset) + 2, "Header");
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hdr = proto_item_add_subtree(ti, ett_header);
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proto_tree_add_boolean_hidden(hdr, hf_bxxp_rsp, NullTVB, offset, 3, TRUE);
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proto_tree_add_text(hdr, NullTVB, offset, 3, "Command: RSP");
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offset += 3;
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/* Now check the space: FIXME */
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offset += 1;
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/* Next, the 'more' flag ... */
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dissect_bxxp_more(pd, offset, pinfo->fd, hdr);
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offset += 1;
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/* Check the space */
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offset += 1;
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offset += dissect_bxxp_int(pd, offset, pinfo->fd, hdr, hf_bxxp_serial, &serial);
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/* skip the space */
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offset += 1;
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/* now for the seqno */
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offset += dissect_bxxp_int(pd, offset, pinfo->fd, hdr, hf_bxxp_seqno, &seqno);
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/* skip the space */
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offset += 1;
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offset += dissect_bxxp_int(pd, offset, pinfo->fd, hdr, hf_bxxp_size, &size);
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/* Check the space ... */
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offset += 1;
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dissect_bxxp_status(pd, offset, pinfo->fd, hdr);
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offset += 1;
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if (check_crlf(pd, offset)) {
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proto_tree_add_text(hdr, NullTVB, offset, 2, "Terminator: CRLF");
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}
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else { /* Protocol violation */
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/* FIXME: implement */
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}
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offset += 2;
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/* Insert MIME header ... */
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offset += dissect_bxxp_mime_header(pd, offset, pinfo->fd, hdr);
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/* Now for the payload, if any */
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if (END_OF_FRAME > 0) { /* Dissect what is left as payload */
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int pl_size = MIN(size, END_OF_FRAME);
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/* Except, check the payload length, and only dissect that much */
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proto_tree_add_text(tree, NullTVB, offset, pl_size, "Payload: %s", format_text(pd + offset, pl_size));
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offset += pl_size;
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}
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/* If anything else left, dissect it ... As what? */
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if (END_OF_FRAME > 0)
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offset += dissect_bxxp_tree(pd, offset, pinfo->fd, tree);
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} else if (strncmp(pd+offset, "SEQ ", 4) == 0) {
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proto_tree_add_boolean_hidden(tree, hf_bxxp_seq, NullTVB, offset, 3, TRUE);
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proto_tree_add_text(tree, NullTVB, offset, 3, "Command: SEQ");
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offset += 3;
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/* Now check the space: FIXME */
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offset += 1;
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offset += dissect_bxxp_int(pd, offset, pinfo->fd, tree, hf_bxxp_channel, &channel);
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/* Check the space: FIXME */
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offset += 1;
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offset += dissect_bxxp_int(pd, offset, pinfo->fd, tree, hf_bxxp_ackno, &ackno);
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/* Check the space: FIXME */
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offset += 1;
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offset += dissect_bxxp_int(pd, offset, pinfo->fd, tree, hf_bxxp_window, &window);
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if (check_crlf(pd, offset)) {
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proto_tree_add_text(tree, NullTVB, offset, 2, "Terminator: CRLF");
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}
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else { /* Protocol violation */
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/* FIXME: implement */
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}
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offset += 2;
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} else if (strncmp(pd+offset, "END", 3) == 0) {
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proto_tree *tr;
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ti = proto_tree_add_text(tree, NullTVB, offset, MIN(5, END_OF_FRAME), "Trailer");
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tr = proto_item_add_subtree(ti, ett_trailer);
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proto_tree_add_boolean_hidden(tr, hf_bxxp_end, NullTVB, offset, 3, TRUE);
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proto_tree_add_text(tr, NullTVB, offset, 3, "Command: END");
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offset += 3;
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if (check_crlf(pd, offset)) {
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proto_tree_add_text(tr, NullTVB, offset, 2, "Terminator: CRLF");
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}
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else { /* Protocol violation */
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/* FIXME: implement */
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}
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offset += 2;
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}
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if (END_OF_FRAME > 0) { /* Dissect anything left over as payload */
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proto_tree_add_text(tree, NullTVB, offset, END_OF_FRAME, "Payload: %s",
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format_text(pd + offset, END_OF_FRAME));
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}
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return offset - st_offset;
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}
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#if 0
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static void
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dissect_bxxp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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#else
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static void
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dissect_bxxp(const u_char *pd, int offset, frame_data *fd,
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proto_tree *tree)
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{
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tvbuff_t *tvb = tvb_create_from_top(offset);
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packet_info *pinfo = π
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#endif
|
||||
proto_tree *bxxp_tree, *ti;
|
||||
int request, serial, seqno, size, channel, ackno, window;
|
||||
char *cmd = pd + offset;
|
||||
|
||||
#if 0
|
||||
CHECK_DISPLAY_AS_DATA(proto_bxxp, tvb, pinfo, tree);
|
||||
#else
|
||||
OLD_CHECK_DISPLAY_AS_DATA(proto_bxxp, pd, offset, fd, tree);
|
||||
#endif
|
||||
|
||||
/* Dissect this frame a bit ? */
|
||||
|
||||
request = pinfo->destport == tcp_port;
|
||||
|
||||
if (check_col(pinfo->fd, COL_PROTOCOL))
|
||||
col_add_str(pinfo->fd, COL_PROTOCOL, "BXXP");
|
||||
|
||||
if (check_col(pinfo->fd, COL_INFO)) { /* Check the type ... */
|
||||
|
||||
col_add_fstr(pinfo->fd, COL_INFO, "%s", format_text(cmd, END_OF_FRAME));
|
||||
|
||||
}
|
||||
|
||||
if (tree) { /* Build the tree info ... */
|
||||
|
||||
ti = proto_tree_add_item(tree, proto_bxxp, NullTVB, offset, END_OF_FRAME, FALSE);
|
||||
|
||||
bxxp_tree = proto_item_add_subtree(ti, ett_bxxp);
|
||||
|
||||
dissect_bxxp_tree(pd, offset, pinfo, bxxp_tree);
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/* Register all the bits needed with the filtering engine */
|
||||
|
||||
void
|
||||
proto_register_bxxp(void)
|
||||
{
|
||||
static hf_register_info hf[] = {
|
||||
{ &hf_bxxp_req,
|
||||
{ "Request", "bxxp.req", FT_BOOLEAN, BASE_NONE, NULL, 0x0, "" }},
|
||||
|
||||
{ &hf_bxxp_rsp,
|
||||
{ "Response", "bxxp.rsp", FT_BOOLEAN, BASE_NONE, NULL, 0x0, "" }},
|
||||
|
||||
{ &hf_bxxp_seq,
|
||||
{ "Sequence", "bxxp.seq", FT_BOOLEAN, BASE_NONE, NULL, 0x0, "" }},
|
||||
|
||||
{ &hf_bxxp_end,
|
||||
{ "End", "bxxp.end", FT_BOOLEAN, BASE_NONE, NULL, 0x0, "" }},
|
||||
|
||||
{ &hf_bxxp_complete,
|
||||
{ "Complete", "bxxp.more.complete", FT_BOOLEAN, BASE_NONE, NULL, 0x0, "" }},
|
||||
|
||||
{ &hf_bxxp_intermediate,
|
||||
{ "Intermediate", "bxxp.more.intermediate", FT_BOOLEAN, BASE_NONE, NULL, 0x0, "" }},
|
||||
|
||||
{ &hf_bxxp_serial,
|
||||
{ "Serial", "bxxp.serial", FT_UINT32, BASE_DEC, NULL, 0x0, "" }},
|
||||
|
||||
{ &hf_bxxp_seqno,
|
||||
{ "Seqno", "bxxp.seqno", FT_UINT32, BASE_DEC, NULL, 0x0, "" }},
|
||||
|
||||
{ &hf_bxxp_size,
|
||||
{ "Size", "bxxp.size", FT_UINT32, BASE_DEC, NULL, 0x0, "" }},
|
||||
|
||||
{ &hf_bxxp_channel,
|
||||
{ "Channel", "bxxp.channel", FT_UINT32, BASE_DEC, NULL, 0x0, "" }},
|
||||
|
||||
{ &hf_bxxp_negative,
|
||||
{ "Negative", "bxxp.status.negative", FT_BOOLEAN, BASE_NONE, NULL, 0x0, ""}},
|
||||
|
||||
{ &hf_bxxp_positive,
|
||||
{ "Positive", "bxxp.status.positive", FT_BOOLEAN, BASE_NONE, NULL, 0x0, ""}},
|
||||
|
||||
{ &hf_bxxp_ackno,
|
||||
{ "Ackno", "bxxp.seq.ackno", FT_UINT32, BASE_DEC, NULL, 0x0, ""}},
|
||||
|
||||
{ &hf_bxxp_window,
|
||||
{ "Window", "bxxp.seq.window", FT_UINT32, BASE_DEC, NULL, 0x0, ""}},
|
||||
|
||||
};
|
||||
static gint *ett[] = {
|
||||
&ett_bxxp,
|
||||
&ett_mime_header,
|
||||
&ett_header,
|
||||
&ett_trailer,
|
||||
};
|
||||
module_t *bxxp_module;
|
||||
|
||||
/* Register our configuration options for BXXP, particularly out port */
|
||||
|
||||
bxxp_module = prefs_register_module("bxxp", "BXXP", proto_reg_handoff_bxxp);
|
||||
|
||||
prefs_register_uint_preference(bxxp_module, "tcp.port", "BXXP TCP Port",
|
||||
"Set the port for BXXP messages (if other"
|
||||
" than the default of 10288)",
|
||||
10, &global_bxxp_tcp_port);
|
||||
|
||||
proto_bxxp = proto_register_protocol("Blocks eXtensible eXchange Protocol",
|
||||
"bxxp");
|
||||
|
||||
proto_register_field_array(proto_bxxp, hf, array_length(hf));
|
||||
proto_register_subtree_array(ett, array_length(ett));
|
||||
|
||||
}
|
||||
|
||||
/* The registration hand-off routine */
|
||||
void
|
||||
proto_reg_handoff_bxxp(void)
|
||||
{
|
||||
static int bxxp_prefs_initialized = FALSE;
|
||||
|
||||
if (bxxp_prefs_initialized) {
|
||||
|
||||
old_dissector_delete("tcp.port", tcp_port, dissect_bxxp);
|
||||
|
||||
}
|
||||
else {
|
||||
|
||||
bxxp_prefs_initialized = TRUE;
|
||||
|
||||
}
|
||||
|
||||
/* Set our port number for future use */
|
||||
|
||||
tcp_port = global_bxxp_tcp_port;
|
||||
|
||||
old_dissector_add("tcp.port", global_bxxp_tcp_port, dissect_bxxp);
|
||||
|
||||
}
|
||||
Loading…
Reference in New Issue