/* Read the next packet */
static gboolean radcom_read(wtap *wth, int *err, gchar **err_info,
gint64 *data_offset)
{
int bytes_read;
char fcs[2];
*data_offset = file_tell(wth->fh);
/* Read record header. */
if (!radcom_read_rec(wth, wth->fh, &wth->phdr, wth->frame_buffer,
err, err_info)) {
/* Read error or EOF */
return FALSE;
}
if (wth->file_encap == WTAP_ENCAP_LAPB) {
/* Read the FCS.
XXX - should we have some way of indicating the
presence and size of an FCS to our caller?
That'd let us handle other file types as well. */
errno = WTAP_ERR_CANT_READ;
bytes_read = file_read(&fcs, sizeof fcs, wth->fh);
if (bytes_read != sizeof fcs) {
*err = file_error(wth->fh, err_info);
if (*err == 0)
*err = WTAP_ERR_SHORT_READ;
return FALSE;
}
}
return TRUE;
}
static gboolean
radcom_seek_read(wtap *wth, gint64 seek_off,
struct wtap_pkthdr *phdr, Buffer *buf, int length _U_,
int *err, gchar **err_info)
{
if (file_seek(wth->random_fh, seek_off, SEEK_SET, err) == -1)
return FALSE;
/* Read record. */
if (!radcom_read_rec(wth, wth->random_fh, phdr, buf, err,
err_info)) {
/* Read error or EOF */
if (*err == 0) {
/* EOF means "short read" in random-access mode */
*err = WTAP_ERR_SHORT_READ;
}
return FALSE;
}
return TRUE;
}
/* Read the next packet */
static gboolean radcom_read(wtap *wth, wtap_rec *rec, Buffer *buf,
int *err, gchar **err_info, gint64 *data_offset)
{
char fcs[2];
*data_offset = file_tell(wth->fh);
/* Read record. */
if (!radcom_read_rec(wth, wth->fh, rec, buf, err, err_info)) {
/* Read error or EOF */
return FALSE;
}
if (wth->file_encap == WTAP_ENCAP_LAPB) {
/* Read the FCS.
XXX - should we have some way of indicating the
presence and size of an FCS to our caller?
That'd let us handle other file types as well. */
if (!wtap_read_bytes(wth->fh, &fcs, sizeof fcs, err, err_info))
return FALSE;
}
return TRUE;
}
