1999-12-12 22:40:10 +00:00
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/* i4btrace.c
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*
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2004-07-18 00:24:25 +00:00
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* $Id$
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1999-12-12 22:40:10 +00:00
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*
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* Wiretap Library
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* Copyright (c) 1999 by Bert Driehuis <driehuis@playbeing.org>
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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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2012-06-28 22:56:06 +00:00
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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1999-12-12 22:40:10 +00:00
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*/
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2002-03-04 00:25:35 +00:00
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1999-12-12 22:40:10 +00:00
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#include "config.h"
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#include <stdlib.h>
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#include <errno.h>
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2000-11-17 21:00:40 +00:00
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#include <string.h>
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2000-05-19 23:07:04 +00:00
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#include "wtap-int.h"
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2000-01-13 07:09:20 +00:00
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#include "file_wrappers.h"
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1999-12-12 22:40:10 +00:00
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#include "buffer.h"
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#include "i4b_trace.h"
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2005-08-02 04:23:39 +00:00
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#include "i4btrace.h"
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1999-12-12 22:40:10 +00:00
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2010-02-26 07:59:54 +00:00
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typedef struct {
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gboolean byte_swapped;
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} i4btrace_t;
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|
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|
Have the Wiretap open, read, and seek-and-read routines return, in
addition to an error code, an error info string, for
WTAP_ERR_UNSUPPORTED, WTAP_ERR_UNSUPPORTED_ENCAP, and
WTAP_ERR_BAD_RECORD errors. Replace the error messages logged with
"g_message()" for those errors with g_strdup()ed or g_strdup_printf()ed
strings returned as the error info string, and change the callers of
those routines to, for those errors, put the info string into the
printed message or alert box for the error.
Add messages for cases where those errors were returned without printing
an additional message.
Nobody uses the error code from "cf_read()" - "cf_read()" puts up the
alert box itself for failures; get rid of the error code, so it just
returns a success/failure indication.
Rename "file_read_error_message()" to "cf_read_error_message()", as it
handles read errors from Wiretap, and have it take an error info string
as an argument. (That handles a lot of the work of putting the info
string into the error message.)
Make some variables in "ascend-grammar.y" static.
Check the return value of "erf_read_header()" in "erf_seek_read()".
Get rid of an unused #define in "i4btrace.c".
svn path=/trunk/; revision=9852
2004-01-25 21:55:17 +00:00
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static gboolean i4btrace_read(wtap *wth, int *err, gchar **err_info,
|
2006-11-05 22:46:44 +00:00
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gint64 *data_offset);
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static gboolean i4btrace_seek_read(wtap *wth, gint64 seek_off,
|
2013-06-16 00:20:00 +00:00
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|
|
struct wtap_pkthdr *phdr, Buffer *buf, int length,
|
Have the Wiretap open, read, and seek-and-read routines return, in
addition to an error code, an error info string, for
WTAP_ERR_UNSUPPORTED, WTAP_ERR_UNSUPPORTED_ENCAP, and
WTAP_ERR_BAD_RECORD errors. Replace the error messages logged with
"g_message()" for those errors with g_strdup()ed or g_strdup_printf()ed
strings returned as the error info string, and change the callers of
those routines to, for those errors, put the info string into the
printed message or alert box for the error.
Add messages for cases where those errors were returned without printing
an additional message.
Nobody uses the error code from "cf_read()" - "cf_read()" puts up the
alert box itself for failures; get rid of the error code, so it just
returns a success/failure indication.
Rename "file_read_error_message()" to "cf_read_error_message()", as it
handles read errors from Wiretap, and have it take an error info string
as an argument. (That handles a lot of the work of putting the info
string into the error message.)
Make some variables in "ascend-grammar.y" static.
Check the return value of "erf_read_header()" in "erf_seek_read()".
Get rid of an unused #define in "i4btrace.c".
svn path=/trunk/; revision=9852
2004-01-25 21:55:17 +00:00
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int *err, gchar **err_info);
|
2013-06-17 21:18:47 +00:00
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static int i4b_read_rec(wtap *wth, FILE_T fh, struct wtap_pkthdr *phdr,
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Buffer *buf, int *err, gchar **err_info);
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1999-12-12 22:40:10 +00:00
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1999-12-15 02:25:50 +00:00
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/*
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* Test some fields in the header to see if they make sense.
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*/
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#define I4B_HDR_IS_OK(hdr) \
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2008-07-08 22:23:26 +00:00
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(!((unsigned)hdr.length < 3 || (unsigned)hdr.length > 16384 || \
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(unsigned)hdr.unit > 4 || (unsigned)hdr.type > 4 || \
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(unsigned)hdr.dir > 2 || (unsigned)hdr.trunc > 2048))
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1999-12-15 02:25:50 +00:00
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2011-04-21 09:41:52 +00:00
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int i4btrace_open(wtap *wth, int *err, gchar **err_info)
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1999-12-12 22:40:10 +00:00
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{
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int bytes_read;
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i4b_trace_hdr_t hdr;
|
1999-12-15 02:25:50 +00:00
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gboolean byte_swapped = FALSE;
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2010-02-26 07:59:54 +00:00
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i4btrace_t *i4btrace;
|
1999-12-12 22:40:10 +00:00
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/* I4B trace files have no magic in the header... Sigh */
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errno = WTAP_ERR_CANT_READ;
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2011-04-06 06:51:19 +00:00
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bytes_read = file_read(&hdr, sizeof(hdr), wth->fh);
|
1999-12-12 22:40:10 +00:00
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if (bytes_read != sizeof(hdr)) {
|
2011-04-21 09:41:52 +00:00
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*err = file_error(wth->fh, err_info);
|
Do not call wtap_file_read_unknown_bytes() or
wtap_file_read_expected_bytes() from an open routine - open routines are
supposed to return -1 on error, 0 if the file doesn't appear to be a
file of the specified type, or 1 if the file does appear to be a file of
the specified type, but those macros will cause the caller to return
FALSE on errors (so that, even if there's an I/O error, it reports "the
file isn't a file of the specified type" rather than "we got an error
trying to read the file").
When doing reads in an open routine before we've concluded that the file
is probably of the right type, return 0, rather than -1, if we get
WTAP_ERR_SHORT_READ - if we don't have enough data to check whether a
file is of a given type, we should keep trying other types, not give up.
For reads done *after* we've concluded the file is probably of the right
type, if a read doesn't return the number of bytes we asked for, but
returns an error of 0, return WTAP_ERR_SHORT_READ - the file is
apparently cut short.
For NetMon and NetXRay/Windows Sniffer files, use a #define for the
magic number size, and use that for both magic numbers.
svn path=/trunk/; revision=46803
2012-12-27 12:19:25 +00:00
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if (*err != 0 && *err != WTAP_ERR_SHORT_READ)
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1999-12-12 22:40:10 +00:00
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return -1;
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return 0;
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}
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/* Silly heuristic... */
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1999-12-15 02:25:50 +00:00
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if (!I4B_HDR_IS_OK(hdr)) {
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/*
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* OK, try byte-swapping the header fields.
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*/
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hdr.length = BSWAP32(hdr.length);
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hdr.unit = BSWAP32(hdr.unit);
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hdr.type = BSWAP32(hdr.type);
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hdr.dir = BSWAP32(hdr.dir);
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hdr.trunc = BSWAP32(hdr.trunc);
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if (!I4B_HDR_IS_OK(hdr)) {
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/*
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* It doesn't look valid in either byte order.
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*/
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return 0;
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}
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/*
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* It looks valid byte-swapped, so assume it's a
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* trace written in the opposite byte order.
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*/
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byte_swapped = TRUE;
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}
|
1999-12-12 22:40:10 +00:00
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|
2002-06-07 07:27:35 +00:00
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|
if (file_seek(wth->fh, 0, SEEK_SET, err) == -1)
|
2002-03-04 00:25:35 +00:00
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return -1;
|
1999-12-12 22:40:10 +00:00
|
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/* Get capture start time */
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|
2013-11-08 09:53:01 +00:00
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wth->file_type_subtype = WTAP_FILE_TYPE_SUBTYPE_I4BTRACE;
|
2010-02-26 07:59:54 +00:00
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i4btrace = (i4btrace_t *)g_malloc(sizeof(i4btrace_t));
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wth->priv = (void *)i4btrace;
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1999-12-12 22:40:10 +00:00
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wth->subtype_read = i4btrace_read;
|
2000-05-18 09:09:50 +00:00
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|
wth->subtype_seek_read = i4btrace_seek_read;
|
Have Wiretap set the snapshot length to 0 if it can't be derived from
reading the capture file. Have callers of "wtap_snapshot_length()"
treat a value of 0 as "unknown", and default to WTAP_MAX_PACKET_SIZE (so
that, when writing a capture file in a format that *does* store the
snapshot length, we can at least put *something* in the file).
If we don't know the snapshot length of the current capture file, don't
display a value in the summary window.
Don't use "cfile.snap" as the snapshot length option when capturing -
doing so causes Ethereal to default, when capturing, to the snapshot
length of the last capture file that you read in, rather than to the
snapshot length of the last capture you did (or the initial default of
"no snapshot length").
Redo the "Capture Options" dialog box to group options into sections
with frames around them, and add units to the snapshot length, maximum
file size, and capture duration options, as per a suggestion by Ulf
Lamping. Also add units to the capture count option.
Make the snapshot length, capture count, maximum file size, and capture
duration options into a combination of a check box and a spin button.
If the check box is not checked, the limit in question is inactive
(snapshot length of 65535, no max packet count, no max file size, no max
capture duration); if it's checked, the spinbox specifies the limit.
Default all of the check boxes to "not checked" and all of the spin
boxes to small values.
Use "gtk_toggle_button_get_active()" rather than directly fetching the
state of a check box.
svn path=/trunk/; revision=4709
2002-02-08 10:07:41 +00:00
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|
wth->snapshot_length = 0; /* not known */
|
1999-12-12 22:40:10 +00:00
|
|
|
|
2010-02-26 07:59:54 +00:00
|
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|
i4btrace->byte_swapped = byte_swapped;
|
1999-12-12 22:40:10 +00:00
|
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|
2002-10-31 07:12:42 +00:00
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|
wth->file_encap = WTAP_ENCAP_ISDN;
|
2005-08-25 21:29:54 +00:00
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|
wth->tsprecision = WTAP_FILE_TSPREC_USEC;
|
1999-12-12 22:40:10 +00:00
|
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return 1;
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|
}
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|
|
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|
|
/* Read the next packet */
|
Have the Wiretap open, read, and seek-and-read routines return, in
addition to an error code, an error info string, for
WTAP_ERR_UNSUPPORTED, WTAP_ERR_UNSUPPORTED_ENCAP, and
WTAP_ERR_BAD_RECORD errors. Replace the error messages logged with
"g_message()" for those errors with g_strdup()ed or g_strdup_printf()ed
strings returned as the error info string, and change the callers of
those routines to, for those errors, put the info string into the
printed message or alert box for the error.
Add messages for cases where those errors were returned without printing
an additional message.
Nobody uses the error code from "cf_read()" - "cf_read()" puts up the
alert box itself for failures; get rid of the error code, so it just
returns a success/failure indication.
Rename "file_read_error_message()" to "cf_read_error_message()", as it
handles read errors from Wiretap, and have it take an error info string
as an argument. (That handles a lot of the work of putting the info
string into the error message.)
Make some variables in "ascend-grammar.y" static.
Check the return value of "erf_read_header()" in "erf_seek_read()".
Get rid of an unused #define in "i4btrace.c".
svn path=/trunk/; revision=9852
2004-01-25 21:55:17 +00:00
|
|
|
static gboolean i4btrace_read(wtap *wth, int *err, gchar **err_info,
|
2006-11-05 22:46:44 +00:00
|
|
|
gint64 *data_offset)
|
1999-12-12 22:40:10 +00:00
|
|
|
{
|
2012-05-04 16:56:18 +00:00
|
|
|
*data_offset = file_tell(wth->fh);
|
2013-05-17 06:08:40 +00:00
|
|
|
|
2013-06-17 21:18:47 +00:00
|
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|
return i4b_read_rec(wth, wth->fh, &wth->phdr, wth->frame_buffer,
|
|
|
|
err, err_info);
|
2000-05-18 09:09:50 +00:00
|
|
|
}
|
|
|
|
|
2002-03-05 08:40:27 +00:00
|
|
|
static gboolean
|
2013-05-17 06:08:40 +00:00
|
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i4btrace_seek_read(wtap *wth, gint64 seek_off, struct wtap_pkthdr *phdr,
|
2013-06-17 21:18:47 +00:00
|
|
|
Buffer *buf, int length _U_, int *err, gchar **err_info)
|
2000-05-18 09:09:50 +00:00
|
|
|
{
|
2002-06-07 07:27:35 +00:00
|
|
|
if (file_seek(wth->random_fh, seek_off, SEEK_SET, err) == -1)
|
2002-03-05 08:40:27 +00:00
|
|
|
return FALSE;
|
2000-05-18 09:09:50 +00:00
|
|
|
|
2013-06-17 21:18:47 +00:00
|
|
|
if (!i4b_read_rec(wth, wth->random_fh, phdr, buf, err, err_info)) {
|
2000-05-18 09:09:50 +00:00
|
|
|
/* Read error or EOF */
|
2013-06-17 21:18:47 +00:00
|
|
|
if (*err == 0) {
|
2002-03-05 05:58:41 +00:00
|
|
|
/* EOF means "short read" in random-access mode */
|
|
|
|
*err = WTAP_ERR_SHORT_READ;
|
|
|
|
}
|
2002-03-05 08:40:27 +00:00
|
|
|
return FALSE;
|
2000-05-18 09:09:50 +00:00
|
|
|
}
|
2013-06-17 21:18:47 +00:00
|
|
|
return TRUE;
|
2000-05-18 09:09:50 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
2013-06-17 21:18:47 +00:00
|
|
|
i4b_read_rec(wtap *wth, FILE_T fh, struct wtap_pkthdr *phdr, Buffer *buf,
|
2013-05-17 06:08:40 +00:00
|
|
|
int *err, gchar **err_info)
|
2000-05-18 09:09:50 +00:00
|
|
|
{
|
2013-05-17 06:08:40 +00:00
|
|
|
i4btrace_t *i4btrace = (i4btrace_t *)wth->priv;
|
|
|
|
i4b_trace_hdr_t hdr;
|
2000-05-18 09:09:50 +00:00
|
|
|
int bytes_read;
|
2013-05-17 06:08:40 +00:00
|
|
|
guint32 length;
|
2000-05-18 09:09:50 +00:00
|
|
|
|
|
|
|
errno = WTAP_ERR_CANT_READ;
|
2013-05-17 06:08:40 +00:00
|
|
|
bytes_read = file_read(&hdr, sizeof hdr, fh);
|
|
|
|
if (bytes_read != sizeof hdr) {
|
2011-04-21 09:41:52 +00:00
|
|
|
*err = file_error(fh, err_info);
|
2013-06-17 21:18:47 +00:00
|
|
|
if (*err == 0 && bytes_read != 0) {
|
|
|
|
/* Read something, but not enough */
|
2000-05-18 09:09:50 +00:00
|
|
|
*err = WTAP_ERR_SHORT_READ;
|
|
|
|
}
|
2013-06-17 21:18:47 +00:00
|
|
|
return FALSE;
|
2000-05-18 09:09:50 +00:00
|
|
|
}
|
2010-02-26 07:59:54 +00:00
|
|
|
|
|
|
|
if (i4btrace->byte_swapped) {
|
2000-05-18 09:09:50 +00:00
|
|
|
/*
|
|
|
|
* Byte-swap the header.
|
|
|
|
*/
|
2013-05-17 06:08:40 +00:00
|
|
|
hdr.length = BSWAP32(hdr.length);
|
|
|
|
hdr.unit = BSWAP32(hdr.unit);
|
|
|
|
hdr.type = BSWAP32(hdr.type);
|
|
|
|
hdr.dir = BSWAP32(hdr.dir);
|
|
|
|
hdr.trunc = BSWAP32(hdr.trunc);
|
|
|
|
hdr.count = BSWAP32(hdr.count);
|
|
|
|
hdr.ts_sec = BSWAP32(hdr.ts_sec);
|
|
|
|
hdr.ts_usec = BSWAP32(hdr.ts_usec);
|
2000-05-18 09:09:50 +00:00
|
|
|
}
|
|
|
|
|
2013-05-17 06:08:40 +00:00
|
|
|
if (hdr.length < sizeof(hdr)) {
|
|
|
|
*err = WTAP_ERR_BAD_FILE; /* record length < header! */
|
|
|
|
*err_info = g_strdup_printf("i4btrace: record length %u < header length %lu",
|
|
|
|
hdr.length, (unsigned long)sizeof(hdr));
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
length = hdr.length - (guint32)sizeof(hdr);
|
|
|
|
if (length > WTAP_MAX_PACKET_SIZE) {
|
|
|
|
/*
|
|
|
|
* Probably a corrupt capture file; don't blow up trying
|
|
|
|
* to allocate space for an immensely-large packet.
|
|
|
|
*/
|
|
|
|
*err = WTAP_ERR_BAD_FILE;
|
|
|
|
*err_info = g_strdup_printf("i4btrace: File has %u-byte packet, bigger than maximum of %u",
|
|
|
|
length, WTAP_MAX_PACKET_SIZE);
|
2002-03-05 08:40:27 +00:00
|
|
|
return FALSE;
|
2000-05-18 09:09:50 +00:00
|
|
|
}
|
2000-11-11 06:36:09 +00:00
|
|
|
|
2013-05-17 06:08:40 +00:00
|
|
|
phdr->presence_flags = WTAP_HAS_TS;
|
|
|
|
|
|
|
|
phdr->len = length;
|
|
|
|
phdr->caplen = length;
|
|
|
|
|
|
|
|
phdr->ts.secs = hdr.ts_sec;
|
|
|
|
phdr->ts.nsecs = hdr.ts_usec * 1000;
|
|
|
|
|
|
|
|
switch (hdr.type) {
|
|
|
|
|
|
|
|
case TRC_CH_I:
|
|
|
|
/*
|
|
|
|
* XXX - what is it? It's probably not WTAP_ENCAP_NULL,
|
|
|
|
* as that means it has a 4-byte AF_ type as the
|
|
|
|
* encapsulation header.
|
|
|
|
*/
|
|
|
|
phdr->pkt_encap = WTAP_ENCAP_NULL;
|
|
|
|
break;
|
2000-11-11 06:36:09 +00:00
|
|
|
|
|
|
|
case TRC_CH_D:
|
|
|
|
/*
|
|
|
|
* D channel, so it's LAPD; set "p2p.sent".
|
|
|
|
*/
|
2013-05-17 06:08:40 +00:00
|
|
|
phdr->pkt_encap = WTAP_ENCAP_ISDN;
|
|
|
|
phdr->pseudo_header.isdn.channel = 0;
|
2000-11-11 06:36:09 +00:00
|
|
|
break;
|
|
|
|
|
|
|
|
case TRC_CH_B1:
|
|
|
|
/*
|
2002-10-31 07:12:42 +00:00
|
|
|
* B channel 1.
|
2000-11-11 06:36:09 +00:00
|
|
|
*/
|
2013-05-17 06:08:40 +00:00
|
|
|
phdr->pkt_encap = WTAP_ENCAP_ISDN;
|
|
|
|
phdr->pseudo_header.isdn.channel = 1;
|
2002-10-31 07:12:42 +00:00
|
|
|
break;
|
2000-11-11 06:36:09 +00:00
|
|
|
|
2002-10-31 07:12:42 +00:00
|
|
|
case TRC_CH_B2:
|
|
|
|
/*
|
|
|
|
* B channel 2.
|
|
|
|
*/
|
2013-05-17 06:08:40 +00:00
|
|
|
phdr->pkt_encap = WTAP_ENCAP_ISDN;
|
|
|
|
phdr->pseudo_header.isdn.channel = 2;
|
2000-11-11 06:36:09 +00:00
|
|
|
break;
|
|
|
|
}
|
2013-05-17 06:08:40 +00:00
|
|
|
|
|
|
|
phdr->pseudo_header.isdn.uton = (hdr.dir == FROM_TE);
|
|
|
|
|
2013-06-17 21:18:47 +00:00
|
|
|
/*
|
|
|
|
* Read the packet data.
|
|
|
|
*/
|
|
|
|
return wtap_read_packet_bytes(fh, buf, length, err, err_info);
|
2013-05-17 06:08:40 +00:00
|
|
|
}
|