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fix SQL error or information leakage on no longer available custom fields

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This commit is contained in:
Ralf Becker 2018-07-30 15:26:38 +02:00
parent 5efdd67f37
commit 3dd2ee24c1
1 changed files with 25 additions and 8 deletions
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31
api/src/Storage.php
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@ -429,7 +429,10 @@ class Storage extends Storage\Base
function &search($criteria,$only_keys=True,$order_by='',$extra_cols='',$wildcard='',$empty=False,$op='AND',$start=false,$filter=null,$join='',$need_full_no_count=false)
{
//error_log(__METHOD__.'('.array2string(array_combine(array_slice(array('criteria','only_keys','order_by','extra_cols','wildcard','empty','op','start','filter','join','need_full_no_count'), 0, count(func_get_args())), func_get_args())).')');
if (!$this->customfields)
// if no CFs are defined OR used and became unavailable (deleted or permissions changed)
if (!$this->customfields && strpos($order_by, self::CF_PREFIX) === false &&
strpos(implode(',', array_keys($filter)), self::CF_PREFIX) === false)
{
return parent::search($criteria,$only_keys,$order_by,$extra_cols,$wildcard,$empty,$op,$start,$filter,$join,$need_full_no_count);
}
@ -447,6 +450,7 @@ class Storage extends Storage\Base
// check if we search in the custom fields
if (isset($criteria[$this->extra_value]))
{
// we should check if the CF is (still) available, but that makes the slow search even slower :(
if (($negate = $criteria[$this->extra_value][0] === '!'))
{
$criteria[$this->extra_value] = substr($criteria[$this->extra_value],1);
@ -542,6 +546,11 @@ class Storage extends Storage\Base
$buff = explode(' ',trim($v));
$orderDir = array_pop($buff);
$key = substr(trim(implode(' ',$buff)), 1);
if (!isset($this->customfields[$key]))
{
$order_by = preg_replace('/'.preg_quote($v, '/').',?/', '', $order_by);
continue; // ignore unavaiable CF
}
switch($this->customfields[$key]['type'])
{
case 'int':
@ -602,6 +611,12 @@ class Storage extends Storage\Base
}
elseif (is_string($name) && $this->is_cf($name))
{
$cf_name = $this->get_cf_name($name);
if (!isset($this->customfields[$cf_name]))
{
unset($filter[$name]);
continue; // ignore unavailable CF
}
if (!empty($val)) // empty -> dont filter
{
if ($val[0] === '!') // negative filter
@ -610,8 +625,8 @@ class Storage extends Storage\Base
}
else // using Db::expression to allow to use array() with possible values or NULL
{
if($this->customfields[$this->get_cf_name($name)]['type'] == 'select' &&
$this->customfields[$this->get_cf_name($name)]['rows'] > 1)
if($this->customfields[$cf_name]['type'] == 'select' &&
$this->customfields[$cf_name]['rows'] > 1)
{
// Multi-select - any entry with the filter value selected matches
$sql_filter = str_replace($this->extra_value,'extra_filter.'.
@ -620,7 +635,7 @@ class Storage extends Storage\Base
))
);
}
elseif ($this->customfields[$this->get_cf_name($name)]['type'] == 'text')
elseif ($this->customfields[$cf_name]['type'] == 'text')
{
$sql_filter = str_replace($this->extra_value,'extra_filter.'.$this->extra_value,
$this->db->expression($this->extra_table,array(
@ -637,7 +652,7 @@ class Storage extends Storage\Base
// need to use a LEFT JOIN for negative search or to allow NULL values
$need_left_join = $val[0] === '!' || strpos($sql_filter,'IS NULL') !== false ? ' LEFT ' : '';
$join .= str_replace('extra_filter','extra_filter'.$extra_filter,$need_left_join.$this->extra_join_filter.
' AND extra_filter.'.$this->extra_key.'='.$this->db->quote($this->get_cf_name($name)).
' AND extra_filter.'.$this->extra_key.'='.$this->db->quote($cf_name).
' AND '.$sql_filter);
++$extra_filter;
}
@ -658,11 +673,13 @@ class Storage extends Storage\Base
break;
}
}
unset($filter[$name]);
$cf_name = $this->get_cf_name($cf);
if (!isset($this->customfields[$cf_name])) continue; // ignore unavailable CF
$join .= str_replace('extra_filter','extra_filter'.$extra_filter,$this->extra_join_filter.
' AND extra_filter.'.$this->extra_key.'='.$this->db->quote($this->get_cf_name($cf)).
' AND extra_filter.'.$this->extra_key.'='.$this->db->quote($cf_name).
' AND '.str_replace($cf,'extra_filter.'.$this->extra_value,$val));
++$extra_filter;
unset($filter[$name]);
}
}
}