d4dab16a3f
Otherwise, if you link with both libwiretap and libfiletap, it's anybody's guess which one you get. That means you're wasting memory with two copies of its routines if they're identical, and means surprising behavior if they're not (which showed up when I was debugging a double-free crash - fixing libwiretap's buffer_free() didn't fix the problem, because Wireshark happened to be calling libfiletap' unfixed buffer_free()). There's nothing *tap-specific about Buffers, anyway, so it really belongs in wsutil. Change-Id: I91537e46917e91277981f8f3365a2c0873152870 Reviewed-on: https://code.wireshark.org/review/3066 Reviewed-by: Guy Harris <guy@alum.mit.edu>
135 lines
3.6 KiB
C
135 lines
3.6 KiB
C
/* hcidump.c
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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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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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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 <wsutil/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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static gboolean hcidump_process_packet(FILE_T fh, struct wtap_pkthdr *phdr,
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Buffer *buf, int *err, gchar **err_info)
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{
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struct dump_hdr dh;
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int bytes_read, packet_size;
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bytes_read = file_read(&dh, DUMP_HDR_SIZE, fh);
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if (bytes_read != DUMP_HDR_SIZE) {
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*err = file_error(fh, err_info);
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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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packet_size = GUINT16_FROM_LE(dh.len);
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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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*err = WTAP_ERR_BAD_FILE;
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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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return FALSE;
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}
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phdr->rec_type = REC_TYPE_PACKET;
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phdr->presence_flags = WTAP_HAS_TS;
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phdr->ts.secs = GUINT32_FROM_LE(dh.ts_sec);
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phdr->ts.nsecs = GUINT32_FROM_LE(dh.ts_usec) * 1000;
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phdr->caplen = packet_size;
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phdr->len = packet_size;
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phdr->pseudo_header.p2p.sent = (dh.in ? FALSE : TRUE);
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return wtap_read_packet_bytes(fh, buf, packet_size, err, err_info);
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}
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static gboolean hcidump_read(wtap *wth, int *err, gchar **err_info,
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gint64 *data_offset)
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{
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*data_offset = file_tell(wth->fh);
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return hcidump_process_packet(wth->fh, &wth->phdr, wth->frame_buffer,
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err, err_info);
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}
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static gboolean hcidump_seek_read(wtap *wth, gint64 seek_off,
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struct wtap_pkthdr *phdr, Buffer *buf, int *err, gchar **err_info)
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{
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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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return hcidump_process_packet(wth->random_fh, phdr, buf, err, err_info);
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}
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int hcidump_open(wtap *wth, int *err, gchar **err_info)
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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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bytes_read = file_read(&dh, DUMP_HDR_SIZE, wth->fh);
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if (bytes_read != DUMP_HDR_SIZE) {
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*err = file_error(wth->fh, err_info);
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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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}
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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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return 0;
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bytes_read = file_read(&type, 1, wth->fh);
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if (bytes_read != 1) {
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*err = file_error(wth->fh, err_info);
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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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}
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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_subtype = WTAP_FILE_TYPE_SUBTYPE_HCIDUMP;
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wth->file_encap = WTAP_ENCAP_BLUETOOTH_H4_WITH_PHDR;
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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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wth->tsprecision = WTAP_FILE_TSPREC_USEC;
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return 1;
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}
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