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/* hcidump.c
*
* Copyright (c) 2003 by Marcel Holtmann <marcel@holtmann.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include "wtap-int.h"
#include "file_wrappers.h"
#include <wsutil/buffer.h>
#include "hcidump.h"
struct dump_hdr {
guint16 len;
guint8 in;
guint8 pad;
guint32 ts_sec;
guint32 ts_usec;
};
#define DUMP_HDR_SIZE (sizeof(struct dump_hdr))
static gboolean hcidump_process_packet(FILE_T fh, struct wtap_pkthdr *phdr,
Buffer *buf, int *err, gchar **err_info)
{
struct dump_hdr dh;
int packet_size;
if (!wtap_read_bytes_or_eof(fh, &dh, DUMP_HDR_SIZE, err, err_info))
return FALSE;
packet_size = GUINT16_FROM_LE(dh.len);
if (packet_size > 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("hcidump: File has %u-byte packet, bigger than maximum of %u",
packet_size, WTAP_MAX_PACKET_SIZE);
return FALSE;
}
phdr->rec_type = REC_TYPE_PACKET;
phdr->presence_flags = WTAP_HAS_TS;
phdr->ts.secs = GUINT32_FROM_LE(dh.ts_sec);
phdr->ts.nsecs = GUINT32_FROM_LE(dh.ts_usec) * 1000;
phdr->caplen = packet_size;
phdr->len = packet_size;
phdr->pseudo_header.p2p.sent = (dh.in ? FALSE : TRUE);
return wtap_read_packet_bytes(fh, buf, packet_size, err, err_info);
}
static gboolean hcidump_read(wtap *wth, int *err, gchar **err_info,
gint64 *data_offset)
{
*data_offset = file_tell(wth->fh);
return hcidump_process_packet(wth->fh, &wth->phdr, wth->frame_buffer,
err, err_info);
}
static gboolean hcidump_seek_read(wtap *wth, gint64 seek_off,
struct wtap_pkthdr *phdr, Buffer *buf, int *err, gchar **err_info)
{
if (file_seek(wth->random_fh, seek_off, SEEK_SET, err) == -1)
return FALSE;
return hcidump_process_packet(wth->random_fh, phdr, buf, err, err_info);
}
wtap_open_return_val hcidump_open(wtap *wth, int *err, gchar **err_info)
{
struct dump_hdr dh;
guint8 type;
if (!wtap_read_bytes(wth->fh, &dh, DUMP_HDR_SIZE, err, err_info)) {
if (*err != WTAP_ERR_SHORT_READ)
return WTAP_OPEN_ERROR;
return WTAP_OPEN_NOT_MINE;
}
if ((dh.in != 0 && dh.in != 1) || dh.pad != 0
|| GUINT16_FROM_LE(dh.len) < 1)
return WTAP_OPEN_NOT_MINE;
if (!wtap_read_bytes(wth->fh, &type, 1, err, err_info)) {
if (*err != WTAP_ERR_SHORT_READ)
return WTAP_OPEN_ERROR;
return WTAP_OPEN_NOT_MINE;
}
if (type < 1 || type > 4)
return WTAP_OPEN_NOT_MINE;
if (file_seek(wth->fh, 0, SEEK_SET, err) == -1)
return WTAP_OPEN_ERROR;
wth->file_type_subtype = WTAP_FILE_TYPE_SUBTYPE_HCIDUMP;
wth->file_encap = WTAP_ENCAP_BLUETOOTH_H4_WITH_PHDR;
wth->snapshot_length = 0;
wth->subtype_read = hcidump_read;
wth->subtype_seek_read = hcidump_seek_read;
wth->file_tsprec = WTAP_TSPREC_USEC;
return WTAP_OPEN_MINE;
}
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