static gboolean
_5views_seek_read(wtap *wth, gint64 seek_off, wtap_rec *rec,
Buffer *buf, int *err, gchar **err_info)
{
t_5VW_TimeStamped_Header TimeStamped_Header;
if (file_seek(wth->random_fh, seek_off, SEEK_SET, err) == -1)
return FALSE;
/*
* Read the header.
*/
if (!_5views_read_header(wth, wth->random_fh, &TimeStamped_Header,
rec, err, err_info)) {
if (*err == 0)
*err = WTAP_ERR_SHORT_READ;
return FALSE;
}
/*
* Read the packet data.
*/
return wtap_read_packet_bytes(wth->random_fh, buf, rec->rec_header.packet_header.caplen,
err, err_info);
}
/* Read the next packet */
static gboolean
_5views_read(wtap *wth, wtap_rec *rec, Buffer *buf, int *err,
gchar **err_info, gint64 *data_offset)
{
t_5VW_TimeStamped_Header TimeStamped_Header;
/*
* Keep reading until we see a record with a subtype of
* CST_5VW_FRAME_RECORD.
*/
do
{
*data_offset = file_tell(wth->fh);
/* Read record header. */
if (!_5views_read_header(wth, wth->fh, &TimeStamped_Header,
rec, err, err_info))
return FALSE;
if (TimeStamped_Header.RecSubType == CST_5VW_FRAME_RECORD) {
/*
* OK, this is a packet.
*/
break;
}
/*
* Not a packet - skip to the next record.
*/
if (!wtap_read_bytes(wth->fh, NULL, TimeStamped_Header.RecSize, err, err_info))
return FALSE;
} while (1);
if (rec->rec_header.packet_header.caplen > WTAP_MAX_PACKET_SIZE_STANDARD) {
/*
* 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("5views: File has %u-byte packet, bigger than maximum of %u",
rec->rec_header.packet_header.caplen, WTAP_MAX_PACKET_SIZE_STANDARD);
return FALSE;
}
return wtap_read_packet_bytes(wth->fh, buf,
rec->rec_header.packet_header.caplen, err, err_info);
}
static gboolean
_5views_seek_read(wtap *wth, gint64 seek_off, struct wtap_pkthdr *phdr,
Buffer *buf, int length, int *err, gchar **err_info)
{
t_5VW_TimeStamped_Header TimeStamped_Header;
if (file_seek(wth->random_fh, seek_off, SEEK_SET, err) == -1)
return FALSE;
/*
* Read the header.
*/
if (!_5views_read_header(wth, wth->random_fh, &TimeStamped_Header,
phdr, err, err_info))
return FALSE;
/*
* Read the packet data.
*/
return wtap_read_packet_bytes(wth->random_fh, buf, length,
err, err_info);
}
/* Read the next packet */
static gboolean
_5views_read(wtap *wth, int *err, gchar **err_info, gint64 *data_offset)
{
t_5VW_TimeStamped_Header TimeStamped_Header;
int bytes_read;
guint packet_size;
guint orig_size;
do
{
bytes_read = _5views_read_header(wth, wth->fh, &TimeStamped_Header, err, err_info);
if (bytes_read == -1) {
/*
* We failed to read the header.
*/
return FALSE;
}
TimeStamped_Header.Key = pletohl(&TimeStamped_Header.Key);
if(TimeStamped_Header.Key != CST_5VW_RECORDS_HEADER_KEY) {
*err = WTAP_ERR_BAD_FILE;
*err_info = g_strdup_printf("5views: Time-stamped header has bad key value 0x%08X",
TimeStamped_Header.Key);
return FALSE;
}
TimeStamped_Header.RecSubType =
pletohl(&TimeStamped_Header.RecSubType);
TimeStamped_Header.RecSize =
pletohl(&TimeStamped_Header.RecSize);
if(TimeStamped_Header.RecSubType != CST_5VW_FRAME_RECORD) {
if (file_seek(wth->fh, TimeStamped_Header.RecSize, SEEK_CUR, err) == -1)
return FALSE;
} else
break;
} while (1);
packet_size = TimeStamped_Header.RecSize;
orig_size = TimeStamped_Header.RecSize;
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("5views: File has %u-byte packet, bigger than maximum of %u",
packet_size, WTAP_MAX_PACKET_SIZE);
return FALSE;
}
*data_offset = file_tell(wth->fh);
buffer_assure_space(wth->frame_buffer, packet_size);
if (!_5views_read_rec_data(wth->fh, buffer_start_ptr(wth->frame_buffer),
packet_size, err, err_info))
return FALSE; /* Read error */
TimeStamped_Header.Utc = pletohl(&TimeStamped_Header.Utc);
TimeStamped_Header.NanoSecondes =
pletohl(&TimeStamped_Header.NanoSecondes);
wth->phdr.presence_flags = WTAP_HAS_TS|WTAP_HAS_CAP_LEN;
wth->phdr.ts.secs = TimeStamped_Header.Utc;
wth->phdr.ts.nsecs = TimeStamped_Header.NanoSecondes;
wth->phdr.caplen = packet_size;
wth->phdr.len = orig_size;
switch (wth->file_encap) {
case WTAP_ENCAP_ETHERNET:
/* We assume there's no FCS in this frame. */
wth->phdr.pseudo_header.eth.fcs_len = 0;
break;
}
return TRUE;
}
