2003-10-30 03:11:03 +00:00
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/* hcidump.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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2003-10-30 03:11:03 +00:00
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*
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* Copyright (c) 2003 by Marcel Holtmann <marcel@holtmann.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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2003-10-30 03:11:03 +00:00
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*/
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#include "config.h"
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#include "wtap-int.h"
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#include "file_wrappers.h"
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#include "buffer.h"
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#include "hcidump.h"
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struct dump_hdr {
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guint16 len;
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guint8 in;
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guint8 pad;
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guint32 ts_sec;
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guint32 ts_usec;
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};
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#define DUMP_HDR_SIZE (sizeof(struct dump_hdr))
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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 hcidump_read(wtap *wth, int *err, gchar **err_info,
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2006-11-05 22:46:44 +00:00
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gint64 *data_offset)
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2003-10-30 03:11:03 +00:00
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{
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struct dump_hdr dh;
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guint8 *buf;
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int bytes_read, packet_size;
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2012-05-04 16:56:18 +00:00
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*data_offset = file_tell(wth->fh);
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2003-10-30 03:11:03 +00:00
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2011-04-06 06:51:19 +00:00
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bytes_read = file_read(&dh, DUMP_HDR_SIZE, wth->fh);
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2003-10-30 03:11:03 +00:00
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if (bytes_read != DUMP_HDR_SIZE) {
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2011-04-21 09:41:52 +00:00
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*err = file_error(wth->fh, err_info);
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2003-10-30 03:11:03 +00:00
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if (*err == 0 && bytes_read != 0)
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*err = WTAP_ERR_SHORT_READ;
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return FALSE;
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}
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2003-10-30 11:53:48 +00:00
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packet_size = GUINT16_FROM_LE(dh.len);
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2003-10-30 03:11:03 +00:00
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if (packet_size > WTAP_MAX_PACKET_SIZE) {
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/*
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* Probably a corrupt capture file; don't blow up trying
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* to allocate space for an immensely-large packet.
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*/
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2011-12-13 09:53:50 +00:00
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*err = WTAP_ERR_BAD_FILE;
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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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*err_info = g_strdup_printf("hcidump: File has %u-byte packet, bigger than maximum of %u",
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packet_size, WTAP_MAX_PACKET_SIZE);
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2003-10-30 03:11:03 +00:00
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return FALSE;
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}
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buffer_assure_space(wth->frame_buffer, packet_size);
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buf = buffer_start_ptr(wth->frame_buffer);
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2011-04-06 06:51:19 +00:00
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bytes_read = file_read(buf, packet_size, wth->fh);
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2003-10-30 03:11:03 +00:00
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if (bytes_read != packet_size) {
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2011-04-21 09:41:52 +00:00
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*err = file_error(wth->fh, err_info);
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2003-10-30 03:11:03 +00:00
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if (*err == 0)
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*err = WTAP_ERR_SHORT_READ;
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return FALSE;
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}
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2012-02-25 23:24:34 +00:00
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wth->phdr.presence_flags = WTAP_HAS_TS;
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2005-08-24 21:31:56 +00:00
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wth->phdr.ts.secs = GUINT32_FROM_LE(dh.ts_sec);
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wth->phdr.ts.nsecs = GUINT32_FROM_LE(dh.ts_usec) * 1000;
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2003-10-30 03:11:03 +00:00
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wth->phdr.caplen = packet_size;
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wth->phdr.len = packet_size;
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2012-10-16 21:50:57 +00:00
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wth->phdr.pseudo_header.p2p.sent = (dh.in ? FALSE : TRUE);
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2003-10-30 03:11:03 +00:00
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return TRUE;
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}
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2006-11-05 22:46:44 +00:00
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static gboolean hcidump_seek_read(wtap *wth, gint64 seek_off,
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2012-10-16 21:50:57 +00:00
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struct wtap_pkthdr *phdr, guint8 *pd, int length,
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2011-04-21 09:41:52 +00:00
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int *err, gchar **err_info)
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2003-10-30 03:11:03 +00:00
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{
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2012-10-16 21:50:57 +00:00
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union wtap_pseudo_header *pseudo_header = &phdr->pseudo_header;
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2003-10-30 03:11:03 +00:00
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struct dump_hdr dh;
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int bytes_read;
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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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2011-04-06 06:51:19 +00:00
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bytes_read = file_read(&dh, DUMP_HDR_SIZE, wth->random_fh);
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2003-10-30 03:11:03 +00:00
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if (bytes_read != DUMP_HDR_SIZE) {
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2011-04-21 09:41:52 +00:00
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*err = file_error(wth->random_fh, err_info);
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2003-10-30 03:11:03 +00:00
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if (*err == 0 && bytes_read != 0)
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*err = WTAP_ERR_SHORT_READ;
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return FALSE;
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}
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2011-04-06 06:51:19 +00:00
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bytes_read = file_read(pd, length, wth->random_fh);
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2003-10-30 03:11:03 +00:00
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if (bytes_read != length) {
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2011-04-21 09:41:52 +00:00
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*err = file_error(wth->random_fh, err_info);
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2003-10-30 03:11:03 +00:00
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if (*err == 0)
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*err = WTAP_ERR_SHORT_READ;
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return FALSE;
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}
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pseudo_header->p2p.sent = (dh.in ? FALSE : TRUE);
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return TRUE;
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}
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2011-04-21 09:41:52 +00:00
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int hcidump_open(wtap *wth, int *err, gchar **err_info)
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2003-10-30 03:11:03 +00:00
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{
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struct dump_hdr dh;
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guint8 type;
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int bytes_read;
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2011-04-06 06:51:19 +00:00
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bytes_read = file_read(&dh, DUMP_HDR_SIZE, wth->fh);
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2003-10-30 03:11:03 +00:00
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if (bytes_read != DUMP_HDR_SIZE) {
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2011-04-21 09:41:52 +00:00
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*err = file_error(wth->fh, err_info);
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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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return -1;
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return 0;
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2003-10-30 03:11:03 +00:00
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}
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2005-11-27 12:10:03 +00:00
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if ((dh.in != 0 && dh.in != 1) || dh.pad != 0
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|| GUINT16_FROM_LE(dh.len) < 1)
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2003-10-30 03:11:03 +00:00
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return 0;
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2011-04-06 06:51:19 +00:00
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bytes_read = file_read(&type, 1, wth->fh);
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2003-10-30 03:11:03 +00:00
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if (bytes_read != 1) {
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2011-04-21 09:41:52 +00:00
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*err = file_error(wth->fh, err_info);
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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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return -1;
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return 0;
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2003-10-30 03:11:03 +00:00
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}
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if (type < 1 || type > 4)
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return 0;
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if (file_seek(wth->fh, 0, SEEK_SET, err) == -1)
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return -1;
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wth->file_type = WTAP_FILE_HCIDUMP;
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2011-02-12 19:59:41 +00:00
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wth->file_encap = WTAP_ENCAP_BLUETOOTH_H4_WITH_PHDR;
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2003-10-30 03:11:03 +00:00
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wth->snapshot_length = 0;
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wth->subtype_read = hcidump_read;
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wth->subtype_seek_read = hcidump_seek_read;
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2005-08-25 21:29:54 +00:00
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wth->tsprecision = WTAP_FILE_TSPREC_USEC;
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2003-10-30 03:11:03 +00:00
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return 1;
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}
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