forked from osmocom/wireshark
1f5f63f8ef
Separate the stuff that any record could have from the stuff that only particular record types have; put the latter into a union, and put all that into a wtap_rec structure. Add some record-type checks as necessary. Change-Id: Id6b3486858f826fce4b096c59231f463e44bfaa2 Reviewed-on: https://code.wireshark.org/review/25696 Reviewed-by: Guy Harris <guy@alum.mit.edu>
125 lines
3.1 KiB
C
125 lines
3.1 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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* SPDX-License-Identifier: GPL-2.0-or-later
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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 "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_read_packet(FILE_T fh, wtap_rec *rec,
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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 packet_size;
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if (!wtap_read_bytes_or_eof(fh, &dh, DUMP_HDR_SIZE, err, err_info))
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return FALSE;
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packet_size = GUINT16_FROM_LE(dh.len);
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if (packet_size > WTAP_MAX_PACKET_SIZE_STANDARD) {
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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_STANDARD);
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return FALSE;
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}
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rec->rec_type = REC_TYPE_PACKET;
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rec->presence_flags = WTAP_HAS_TS;
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rec->ts.secs = GUINT32_FROM_LE(dh.ts_sec);
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rec->ts.nsecs = GUINT32_FROM_LE(dh.ts_usec) * 1000;
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rec->rec_header.packet_header.caplen = packet_size;
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rec->rec_header.packet_header.len = packet_size;
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rec->rec_header.packet_header.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_read_packet(wth->fh, &wth->rec, wth->rec_data,
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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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wtap_rec *rec, 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_read_packet(wth->random_fh, rec, buf, err, err_info);
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}
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wtap_open_return_val 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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if (!wtap_read_bytes(wth->fh, &dh, DUMP_HDR_SIZE, err, err_info)) {
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if (*err != WTAP_ERR_SHORT_READ)
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return WTAP_OPEN_ERROR;
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return WTAP_OPEN_NOT_MINE;
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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 WTAP_OPEN_NOT_MINE;
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if (!wtap_read_bytes(wth->fh, &type, 1, err, err_info)) {
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if (*err != WTAP_ERR_SHORT_READ)
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return WTAP_OPEN_ERROR;
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return WTAP_OPEN_NOT_MINE;
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}
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if (type < 1 || type > 4)
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return WTAP_OPEN_NOT_MINE;
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if (file_seek(wth->fh, 0, SEEK_SET, err) == -1)
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return WTAP_OPEN_ERROR;
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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->file_tsprec = WTAP_TSPREC_USEC;
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return WTAP_OPEN_MINE;
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}
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/*
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* Editor modelines - http://www.wireshark.org/tools/modelines.html
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*
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* Local variables:
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* c-basic-offset: 8
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* tab-width: 8
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* indent-tabs-mode: t
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* End:
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*
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* vi: set shiftwidth=8 tabstop=8 noexpandtab:
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* :indentSize=8:tabSize=8:noTabs=false:
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*/
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