/* Used to read packets in random-access fashion */
static gboolean dct3trace_seek_read (wtap *wth, gint64 seek_off,
union wtap_pseudo_header *pseudo_header, guint8 *pd, int len,
int *err, gchar **err_info)
{
int buf_len;
unsigned char buf[MAX_PACKET_LEN];
if (file_seek(wth->random_fh, seek_off, SEEK_SET, err) == -1)
{
return FALSE;
}
if( !dct3trace_get_packet(wth->random_fh, pseudo_header, buf, &buf_len, err, err_info) )
{
return FALSE;
}
if( len != buf_len && len != -1 )
{
*err = WTAP_ERR_BAD_FILE;
*err_info = g_strdup_printf("dct3trace: requested length %d doesn't match record length %d",
len, buf_len);
return FALSE;
}
if( buf_len > MAX_PACKET_LEN)
{
*err = WTAP_ERR_BAD_FILE;
*err_info = g_strdup_printf("dct3trace: record length %d too long", buf_len);
return FALSE;
}
memcpy( pd, buf, buf_len );
return TRUE;
}
/* Find the next packet and parse it; called from wtap_read(). */
static gboolean dct3trace_read(wtap *wth, int *err, gchar **err_info,
gint64 *data_offset)
{
guint64 offset = file_tell(wth->fh);
int buf_len;
unsigned char buf[MAX_PACKET_LEN];
if( !dct3trace_get_packet(wth->fh, &wth->pseudo_header, buf, &buf_len, err, err_info) )
{
return FALSE;
}
/* We've got a full packet! */
wth->phdr.presence_flags = 0; /* no time stamp, no separate "on the wire" length */
wth->phdr.ts.secs = 0;
wth->phdr.ts.nsecs = 0;
wth->phdr.caplen = buf_len;
wth->phdr.len = buf_len;
/* Make sure we have enough room for the packet */
buffer_assure_space(wth->frame_buffer, buf_len);
memcpy( buffer_start_ptr(wth->frame_buffer), buf, buf_len );
*data_offset = offset;
return TRUE;
}
/* Find the next packet and parse it; called from wtap_read(). */
static gboolean dct3trace_read(wtap *wth, int *err, gchar **err_info,
gint64 *data_offset)
{
*data_offset = file_tell(wth->fh);
return dct3trace_get_packet(wth->fh, &wth->phdr, wth->frame_buffer,
err, err_info);
}
/* Used to read packets in random-access fashion */
static gboolean dct3trace_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 dct3trace_get_packet(wth->random_fh, phdr, buf, err, err_info);
}
