int
iseries_open (wtap * wth, int *err, gchar ** err_info)
{
int bytes_read;
gint offset;
char magic[ISERIES_LINE_LENGTH];
char unicodemagic[] =
{ '\x43', '\x00', '\x4F', '\x00', '\x4D',
'\x00', '\x4D', '\x00', '\x55', '\x00', '\x4E', '\x00', '\x49', '\x00',
'\x43', '\x00', '\x41'
};
/*
* Check that file starts with a valid iSeries COMMS TRACE header
* by scanning for it in the first line
*/
errno = WTAP_ERR_CANT_READ;
bytes_read = file_read (&magic, sizeof magic, wth->fh);
if (bytes_read != sizeof magic)
{
*err = file_error (wth->fh, err_info);
if (*err != 0 && *err != WTAP_ERR_SHORT_READ)
return -1;
return 0;
}
/*
* Check if this is a UNICODE formatted file by scanning for the magic string
*/
offset=0;
while ((unsigned)offset < (ISERIES_LINE_LENGTH - (sizeof unicodemagic)))
{
if (memcmp (magic + offset, unicodemagic, sizeof unicodemagic) == 0) {
if (file_seek (wth->fh, 0, SEEK_SET, err) == -1)
{
return 0;
}
/*
* Do some basic sanity checking to ensure we can handle the
* contents of this trace
*/
if (!iseries_check_file_type (wth, err, err_info, ISERIES_FORMAT_UNICODE))
{
if (*err == 0)
return 0;
else
return -1;
}
wth->file_encap = WTAP_ENCAP_ETHERNET;
wth->file_type_subtype = WTAP_FILE_TYPE_SUBTYPE_ISERIES;
wth->snapshot_length = 0;
wth->subtype_read = iseries_read;
wth->subtype_seek_read = iseries_seek_read;
wth->tsprecision = WTAP_FILE_TSPREC_USEC;
if (file_seek (wth->fh, 0, SEEK_SET, err) == -1)
{
return 0;
}
return 1;
}
offset += 1;
}
/*
* Check if this is a ASCII formatted file by scanning for the magic string
*/
offset=0;
while (offset < (ISERIES_LINE_LENGTH - ISERIES_HDR_MAGIC_LEN))
{
if (memcmp (magic + offset, ISERIES_HDR_MAGIC_STR, ISERIES_HDR_MAGIC_LEN) == 0)
{
if (file_seek (wth->fh, 0, SEEK_SET, err) == -1)
{
return 0;
}
/*
* Do some basic sanity checking to ensure we can handle the
* contents of this trace
*/
if (!iseries_check_file_type (wth, err, err_info, ISERIES_FORMAT_ASCII))
{
if (*err == 0)
return 0;
else
return -1;
}
wth->file_encap = WTAP_ENCAP_ETHERNET;
wth->file_type_subtype = WTAP_FILE_TYPE_SUBTYPE_ISERIES;
wth->snapshot_length = 0;
wth->subtype_read = iseries_read;
wth->subtype_seek_read = iseries_seek_read;
wth->tsprecision = WTAP_FILE_TSPREC_USEC;
if (file_seek (wth->fh, 0, SEEK_SET, err) == -1)
{
return 0;
}
return 1;
}
offset += 1;
}
/* Neither ASCII or UNICODE so not supported */
return 0;
}
/*
* XXX - it would probably be cleaner to use a UCS-2 flavor of file_gets(),
* rather than file_gets(), if we're reading a UCS-2 file.
*/
wtap_open_return_val
iseries_open (wtap * wth, int *err, gchar ** err_info)
{
gint offset;
char magic[ISERIES_LINE_LENGTH];
/*
* Check that file starts with a valid iSeries COMMS TRACE header
* by scanning for it in the first line
*/
if (!wtap_read_bytes (wth->fh, &magic, sizeof magic, err, err_info))
{
if (*err != WTAP_ERR_SHORT_READ)
return WTAP_OPEN_ERROR;
return WTAP_OPEN_NOT_MINE;
}
/*
* Check if this is a little-endian UCS-2 Unicode formatted file by scanning
* for the magic string
*/
offset=0;
while ((unsigned int)offset < (ISERIES_LINE_LENGTH - (sizeof iseries_hdr_magic_le_ucs_2)))
{
if (memcmp (magic + offset, iseries_hdr_magic_le_ucs_2, sizeof iseries_hdr_magic_le_ucs_2) == 0) {
if (file_seek (wth->fh, 0, SEEK_SET, err) == -1)
{
return WTAP_OPEN_ERROR;
}
/*
* Do some basic sanity checking to ensure we can handle the
* contents of this trace
*/
if (!iseries_check_file_type (wth, err, err_info, ISERIES_FORMAT_UNICODE))
{
if (*err == 0)
return WTAP_OPEN_NOT_MINE;
else
return WTAP_OPEN_ERROR;
}
wth->file_encap = WTAP_ENCAP_ETHERNET;
wth->file_type_subtype = WTAP_FILE_TYPE_SUBTYPE_ISERIES;
wth->snapshot_length = 0;
wth->subtype_read = iseries_read;
wth->subtype_seek_read = iseries_seek_read;
wth->file_tsprec = WTAP_TSPREC_USEC;
if (file_seek (wth->fh, 0, SEEK_SET, err) == -1)
{
return WTAP_OPEN_ERROR;
}
return WTAP_OPEN_MINE;
}
offset += 1;
}
/*
* Check if this is a ASCII formatted file by scanning for the magic string
*/
offset=0;
while ((unsigned int)offset < (ISERIES_LINE_LENGTH - sizeof iseries_hdr_magic_ascii))
{
if (memcmp (magic + offset, iseries_hdr_magic_ascii, sizeof iseries_hdr_magic_ascii) == 0)
{
if (file_seek (wth->fh, 0, SEEK_SET, err) == -1)
{
return WTAP_OPEN_ERROR;
}
/*
* Do some basic sanity checking to ensure we can handle the
* contents of this trace
*/
if (!iseries_check_file_type (wth, err, err_info, ISERIES_FORMAT_ASCII))
{
if (*err == 0)
return WTAP_OPEN_NOT_MINE;
else
return WTAP_OPEN_ERROR;
}
wth->file_encap = WTAP_ENCAP_ETHERNET;
wth->file_type_subtype = WTAP_FILE_TYPE_SUBTYPE_ISERIES;
wth->snapshot_length = 0;
wth->subtype_read = iseries_read;
wth->subtype_seek_read = iseries_seek_read;
wth->file_tsprec = WTAP_TSPREC_USEC;
if (file_seek (wth->fh, 0, SEEK_SET, err) == -1)
{
return WTAP_OPEN_ERROR;
}
return WTAP_OPEN_MINE;
}
offset += 1;
}
/* Neither ASCII or UNICODE so not supported */
return WTAP_OPEN_NOT_MINE;
}
