/*
* Read packets in random-access fashion
*/
static gboolean
iseries_seek_read (wtap * wth, gint64 seek_off,
struct wtap_pkthdr *phdr, guint8 * pd,
int len, int *err, gchar ** err_info)
{
union wtap_pseudo_header *pseudo_header = &phdr->pseudo_header;
int cap_len;
/* seek to packet location */
if (file_seek (wth->random_fh, seek_off - 1, SEEK_SET, err) == -1)
return FALSE;
/*
* Parse the packet and extract the various fields
*/
cap_len = iseries_parse_packet (wth, wth->random_fh, pseudo_header, pd,
err, err_info);
if (cap_len != len)
{
if (cap_len != -1)
{
*err = WTAP_ERR_BAD_FILE;
*err_info =
g_strdup_printf ("iseries: requested length %d doesn't match record length %d",
len, cap_len);
}
return FALSE;
}
return TRUE;
}
/*
* Find the next packet and parse it; called from wtap_read().
*/
static gboolean
iseries_read (wtap * wth, int *err, gchar ** err_info, gint64 *data_offset)
{
gint64 offset;
int cap_len;
/*
* Locate the next packet
*/
offset = iseries_seek_next_packet (wth, err, err_info);
if (offset < 1)
return FALSE;
/*
* Parse the packet and extract the various fields
*/
cap_len =
iseries_parse_packet (wth, wth->fh, &wth->phdr.pseudo_header, NULL, err,
err_info);
if (cap_len == -1)
return FALSE;
*data_offset = offset;
return TRUE;
}
/*
* Read packets in random-access fashion
*/
static gboolean
iseries_seek_read (wtap * wth, gint64 seek_off, struct wtap_pkthdr *phdr,
Buffer * buf, int len _U_, int *err, gchar ** err_info)
{
/* seek to packet location */
if (file_seek (wth->random_fh, seek_off - 1, SEEK_SET, err) == -1)
return FALSE;
/*
* Parse the packet and extract the various fields
*/
return iseries_parse_packet (wth, wth->random_fh, phdr, buf,
err, err_info);
}
/*
* Find the next packet and parse it; called from wtap_read().
*/
static gboolean
iseries_read (wtap * wth, int *err, gchar ** err_info, gint64 *data_offset)
{
gint64 offset;
/*
* Locate the next packet
*/
offset = iseries_seek_next_packet (wth, err, err_info);
if (offset < 0)
return FALSE;
*data_offset = offset;
/*
* Parse the packet and extract the various fields
*/
return iseries_parse_packet (wth, wth->fh, &wth->phdr, wth->frame_buffer,
err, err_info);
}
