forked from osmocom/wireshark
From Fred Fierling (bug 3486):
Added support for Daintree's Sensor Network Analyzer capture files. svn path=/trunk/; revision=28463
This commit is contained in:
Stig Bjørlykke
parent
905b8d0b2d
commit
5fa6b90f6b
4
AUTHORS
4
AUTHORS
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@ -2855,6 +2855,10 @@ Benjamin Tse <benjamin_tse@agilent.com> {
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Overlapped pipe I/O for dumpcap under Windows
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}
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Fred Fierling <fff [AT] exegin.com> {
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Daintree's Sensor Network Analyzer file support
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}
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and by:
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Pavel Roskin <proski [AT] gnu.org>
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@ -40,6 +40,7 @@ NONGENERATED_C_FILES = \
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commview.c \
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cosine.c \
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csids.c \
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daintree-sna.c \
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dbs-etherwatch.c \
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dct3trace.c \
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erf.c \
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@ -0,0 +1,266 @@
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/* daintree_sna.c
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* Routines for opening .dcf capture files created by Daintree's
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* Sensor Network Analyzer for 802.15.4 radios
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* Copyright 2009, Exegin Technologies Limited <fff@exegin.com>
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* Started with packetlogger.c as a template, but little packetlogger code
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* remains. Borrowed many snippets from dbs-etherwatch.c, the
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* daintree_sna_hex_char function having the largest chunk.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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* USA.
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*/
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/* This module reads capture files saved by Daintree's Sensor Network Analyzer.
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* Daintree captures are plain text files with a two line header,
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* followed by packet records, one per line, with whitespace separated fields
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* consisting of: packet number, time, bytes of capture data, capture data,
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* unknown, unknown, signal strength?, unknown, etc, and terminated with CRLF.
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*/
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/* Example capture file:
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#Format=4
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# SNA v2.2.0.4 SUS:20090709 ACT:819705
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1 1233783799.326400 10 030809ffffffff07ffff 42 1 -69 25 2 0 1 32767
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2 1233783799.477440 5 02000bffff 110 1 -44 25 6 0 1 32767
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3 1233783799.809920 5 020013ffff 107 1 -45 25 43 0 1 3276
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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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#include <glib.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <string.h>
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#include <ctype.h>
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#include "wtap.h"
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#include "wtap-int.h"
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#include "buffer.h"
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#include "file_wrappers.h"
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#include "daintree-sna.h"
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typedef struct daintree_sna_header {
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guint32 len;
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guint64 ts;
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} daintree_sna_header_t;
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#define DAINTREE_SNA_HEADER_SIZE 2
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#define FCS_LENGTH 2
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static const char daintree_magic_text[] =
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{ '#', 'F', 'o', 'r', 'm', 'a', 't', '=' };
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#define DAINTREE_MAGIC_TEXT_SIZE (sizeof daintree_magic_text)
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#define DAINTREE_MAX_LINE_SIZE 512
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#define COMMENT_LINE daintree_magic_text[0]
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static char readLine[DAINTREE_MAX_LINE_SIZE];
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static char seekLine[DAINTREE_MAX_LINE_SIZE];
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static char readData[DAINTREE_MAX_LINE_SIZE/2];
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static char seekData[DAINTREE_MAX_LINE_SIZE/2];
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static gboolean daintree_sna_read(wtap *wth, int *err, gchar **err_info _U_,
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gint64 *data_offset);
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static gboolean daintree_sna_seek_read(wtap *wth, gint64 seek_off,
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union wtap_pseudo_header *pseudo_header _U_,
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guchar *pd, int len, int *err,
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gchar **err_info _U_);
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static guint daintree_sna_hex_char(guchar *str, int *err);
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/* Open a file and determine if it's a Daintree file */
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int daintree_sna_open(wtap *wth, int *err _U_, gchar **err_info _U_)
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{
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guint i;
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/* get first line of file header */
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if (file_gets(readLine, DAINTREE_MAX_LINE_SIZE, wth->fh)==NULL) return 0;
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wth->data_offset += strlen(readLine);
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/* check magic text */
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i = 0;
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while (i < DAINTREE_MAGIC_TEXT_SIZE) {
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if (readLine[i] != daintree_magic_text[i]) return 0; /* not daintree format */
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i++;
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}
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/* read second header line */
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if (file_gets(readLine, DAINTREE_MAX_LINE_SIZE, wth->fh)==NULL) return 0;
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wth->data_offset += strlen(readLine);
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if (readLine[0] != COMMENT_LINE) return 0; /* daintree files have a two line header */
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/* set up the pointers to the handlers for this file type */
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wth->subtype_read = daintree_sna_read;
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wth->subtype_seek_read = daintree_sna_seek_read;
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/* set up for file type */
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wth->file_type = WTAP_FILE_DAINTREE_SNA;
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wth->file_encap = WTAP_ENCAP_IEEE802_15_4;
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wth->tsprecision = WTAP_FILE_TSPREC_USEC;
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return 1; /* it's a Daintree file */
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}
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/* Read the capture file sequentially
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* Wireshark scans the file with sequential reads during preview and initial display. */
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static gboolean
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daintree_sna_read(wtap *wth, int *err, gchar **err_info _U_, gint64 *data_offset)
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{
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guint64 seconds;
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*data_offset = wth->data_offset;
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/* we've only seen file header lines starting with '#', but
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* if others appear in the file, they are tossed */
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do {
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if (file_gets(readLine, DAINTREE_MAX_LINE_SIZE, wth->fh) == NULL) {
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*err = file_error(wth->fh);
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return FALSE; /* all done */
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}
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wth->data_offset += strlen(readLine);
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} while (readLine[0] == COMMENT_LINE);
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/* parse one line of capture data */
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if (sscanf(readLine, "%*s %" G_GINT64_MODIFIER "u.%u %u %s",
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&seconds, &wth->phdr.ts.nsecs,
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&wth->phdr.len, readData) != 4) {
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*err = WTAP_ERR_BAD_RECORD;
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*err_info = g_strdup("daintree_sna: invalid read record");
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return FALSE;
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}
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wth->phdr.ts.secs = (time_t) seconds;
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wth->phdr.ts.nsecs *= 1000; /* convert mS to nS */
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/* convert packet data from ASCII string to hex, sanity-check its length against what we assume is the
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* packet length field, write data to frame buffer */
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if ((wth->phdr.caplen = daintree_sna_hex_char(readData, err)) > FCS_LENGTH) {
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if (wth->phdr.caplen <= wth->phdr.len) {
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/* Daintree doesn't store the FCS, but pads end of packet with 0xffff, which we toss */
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wth->phdr.caplen -= FCS_LENGTH;
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buffer_assure_space(wth->frame_buffer, wth->phdr.caplen);
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memcpy(buffer_start_ptr(wth->frame_buffer), readData, wth->phdr.caplen);
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} else {
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*err = WTAP_ERR_BAD_RECORD;
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*err_info = g_strdup_printf("daintree_sna: capture length (%d) > packet length (%d)",
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wth->phdr.caplen, wth->phdr.len);
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return FALSE;
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}
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} else {
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*err = WTAP_ERR_BAD_RECORD;
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*err_info = g_strdup("daintree_sna: invalid packet data");
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return FALSE;
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}
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return TRUE;
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}
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/* Read the capture file randomly
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* Wireshark opens the capture file for random access when displaying user-selected packets */
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static gboolean
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daintree_sna_seek_read(wtap *wth, gint64 seek_off, union wtap_pseudo_header
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*pseudo_header _U_, guchar *pd, int len, int *err,
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gchar **err_info _U_)
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{
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guint pkt_len;
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if(file_seek(wth->random_fh, seek_off, SEEK_SET, err) == -1)
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return FALSE;
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/* It appears only file header lines start with '#', but
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* if we find any others, we toss them */
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do {
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if (file_gets(seekLine, DAINTREE_MAX_LINE_SIZE, wth->random_fh) == NULL) {
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*err = file_error(wth->random_fh);
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return FALSE; /* all done */
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}
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} while (seekLine[0] == COMMENT_LINE);
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/* ignore all but packet data, since the sequential read pass stored everything else */
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if (sscanf(seekLine, "%*s %*u.%*u %*u %s", seekData) != 1) {
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*err = WTAP_ERR_BAD_RECORD;
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*err_info = g_strdup("daintree_sna: corrupted seek record");
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return FALSE;
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}
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/* convert packet data from ASCII hex string to guchar */
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if ((pkt_len = daintree_sna_hex_char(seekData, err)) <= FCS_LENGTH) {
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*err = WTAP_ERR_BAD_RECORD;
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*err_info = g_strdup("daintree_sna: corrupted packet data");
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return FALSE;
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}
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pkt_len -= FCS_LENGTH; /* remove padded bytes that Daintree stores instead of FCS */
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if (pkt_len == (guint) len) {
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/* move to frame buffer for dissection */
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memcpy(pd, seekData, pkt_len);
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} else {
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*err = WTAP_ERR_BAD_RECORD;
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*err_info = g_strdup("daintree-sna: corrupted frame");
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return FALSE;
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}
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return TRUE;
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}
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/* Convert an ASCII hex string to guchar */
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static guint
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daintree_sna_hex_char(guchar *str, int *err _U_) {
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guint bytes;
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guchar *p;
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p = str; /* overlay source buffer */
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bytes = 0;
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/* convert hex string to guchar */
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while(*str) {
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if (!isxdigit((guchar)*str)) return 0;
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/* most significant nibble */
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if(isdigit((guchar)*str)) {
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*p = (*str - '0') << 4;
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} else {
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*p = ((tolower(*str) - 'a') + 10) << 4;
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}
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str++;
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if (!isxdigit((guchar)*str)) return 0;
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/* least significant nibble */
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if(isdigit((guchar)*str)) {
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*p += *str - '0';
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} else {
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*p += (tolower(*str) - 'a') + 10;
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}
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str++;
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/* next byte in buffer */
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p++;
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bytes++;
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}
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return bytes;
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}
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@ -0,0 +1,32 @@
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/* daintree-sna.h
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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* USA.
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*
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*/
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#ifndef __DAINTREE_SNA_H__
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#define __DAINTREE_SNA_H__
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int daintree_sna_open(wtap *wth, int *err, gchar **err_info _U_);
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#endif /* __DAINTREE_SNA_H__ */
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@ -80,6 +80,7 @@
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#include "tnef.h"
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#include "dct3trace.h"
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#include "packetlogger.h"
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#include "daintree-sna.h"
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/* The open_file_* routines should return:
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@ -128,6 +129,7 @@ static wtap_open_routine_t open_routines_base[] = {
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mpeg_open,
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tnef_open,
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dct3trace_open,
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daintree_sna_open,
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/* Files that don't have magic bytes at a fixed location,
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* but that instead require a heuristic of some sort to
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* identify them. This includes the ASCII trace files that
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@ -602,7 +604,10 @@ static const struct file_type_info dump_open_table_base[] = {
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{ "Gammu DCT3 trace", "dct3trace", "*.xml", NULL, FALSE, NULL, NULL },
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/* WTAP_FILE_PACKETLOGGER */
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{ "PacketLogger", "pklg", "*.pklg", NULL, FALSE, NULL, NULL }
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{ "PacketLogger", "pklg", "*.pklg", NULL, FALSE, NULL, NULL },
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/* WTAP_FILE_DAINTREE_SNA */
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{ "Daintree SNA", "dsna", "*.dcf", NULL, FALSE, NULL, NULL }
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};
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gint wtap_num_file_types = sizeof(dump_open_table_base) / sizeof(struct file_type_info);
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@ -271,6 +271,7 @@ extern "C" {
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#define WTAP_FILE_TNEF 53
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#define WTAP_FILE_DCT3TRACE 54
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#define WTAP_FILE_PACKETLOGGER 55
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#define WTAP_FILE_DAINTREE_SNA 56
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#define WTAP_NUM_FILE_TYPES wtap_get_num_file_types()
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