diff --git a/lib/search/searchutil.inc.php b/lib/search/searchutil.inc.php
new file mode 100644
index 0000000..e89e0bb
--- /dev/null
+++ b/lib/search/searchutil.inc.php
@@ -0,0 +1,136 @@
+<?php
+
+class KTSearchUtil {
+    function _oneCriteriaSetToSQL($aOneCriteriaSet) {
+        $aSQL = array();
+        $aJoinSQL = array();
+        $criteria_set = array();
+        foreach ($aOneCriteriaSet as $order => $dataset) {
+            $type = KTUtil::arrayGet($dataset, "type");
+            $sql = KTUtil::arrayGet($dataset, "sql");
+            if (!empty($type)) {
+                $oCriterion = Criteria::getCriterionByNumber($dataset["type"]);
+                if (PEAR::isError($oCriterion)) {
+                    return PEAR::raiseError('Invalid criteria specified.');
+                }
+                $criteria_set[] = array($oCriterion, $dataset["data"]);
+            } else if (!empty($sql)) {
+                $criteria_set[] = $sql;
+            } else {
+                return PEAR::raiseError('Invalid criteria specified.');
+            }
+        }
+        foreach ($criteria_set as $oCriterionPair) {
+            $oCriterion = $oCriterionPair[0];
+            $aReq = $oCriterionPair[1];
+            if (is_object($oCriterion)) {
+                $res = $oCriterion->searchSQL($aReq);
+                if (!is_null($res)) {
+                    $aSQL[] = $res;
+                }
+                $res = $oCriterion->searchJoinSQL();
+                if (!is_null($res)) {
+                    $aJoinSQL[] = $res;
+                }
+            } else {
+                $aSQL[] = array($oCriterion, $aReq);
+            }
+        }
+
+        $aCritParams = array();
+        $aCritQueries = array();
+        foreach ($aSQL as $sSQL) {
+            if (is_array($sSQL)) {
+                $aCritQueries[] = '('.$sSQL[0].')';
+                $aCritParams = array_merge($aCritParams , $sSQL[1]);
+            } else {
+                $aCritQueries[] = '('.$sSQL.')';
+            }
+        }
+
+        if (count($aCritQueries) == 0) {
+            return PEAR::raiseError("No search criteria were specified");
+        }
+
+        return array($aCritQueries, $aCritParams, $aJoinSQL);
+    }
+
+    function criteriaSetToSQL($aCriteriaSet, $iRecurseLevel = 0) {
+        $aJoinSQL = array();
+        $aSearchStrings = array();
+        $aParams = array();
+        foreach ($aCriteriaSet["subgroup"] as $k => $aOneCriteriaSet) {
+            $aValues = KTUtil::arrayGet($aOneCriteriaSet, "values");
+            $aSubgroup = KTUtil::arrayGet($aOneCriteriaSet, "subgroup");
+            if (!empty($aValues)) {
+                list($aThisCritQueries, $aThisParams, $aThisJoinSQL) = KTSearchUtil::_oneCriteriaSetToSQL($aOneCriteriaSet["values"]);
+                $aJoinSQL = array_merge($aJoinSQL, $aThisJoinSQL);
+                $aParams = array_merge($aParams, $aThisParams);
+                $tabs = str_repeat("\t", ($iRecurseLevel + 2));
+                $aSearchStrings[] = "\n$tabs(\n$tabs\t" . join("\n " . KTUtil::arrayGet($aOneCriteriaSet, 'join', "AND") . " ", $aThisCritQueries) . "\n$tabs)";
+            } else if (!empty($aSubgroup)) {
+                list($sThisSearchString, $aThisParams, $sThisJoinSQL) =
+                    KTSearchUtil::criteriaSetToSQL($aOneCriteriaSet, $iRecurseLevel + 1);
+                $aJoinSQL[] = $sThisJoinSQL;
+                $aParams = array_merge($aParams, $aThisParams);
+                $aSearchStrings[] = $sThisSearchString;
+            }
+        }
+        $sJoinSQL = join(" ", $aJoinSQL);
+        $tabs = str_repeat("\t", $iRecurseLevel + 1);
+        $sSearchString = "\n$tabs(" . join("\n$tabs\t" . $aCriteriaSet['join'] . " ", $aSearchStrings) .  "\n$tabs)";
+        return array($sSearchString, $aParams, $sJoinSQL);
+    }
+
+    function permissionToSQL($oUser, $sPermissionName) {
+        $oPermission =& KTPermission::getByName('ktcore.permissions.read');
+        $sPermissionLookupsTable = KTUtil::getTableName('permission_lookups');
+        $sPermissionLookupAssignmentsTable = KTUtil::getTableName('permission_lookup_assignments');
+        $sPermissionDescriptorsTable = KTUtil::getTableName('permission_descriptors');
+        $sJoinSQL = "
+            INNER JOIN $sPermissionLookupsTable AS PL ON D.permission_lookup_id = PL.id
+            INNER JOIN $sPermissionLookupAssignmentsTable AS PLA ON PL.id = PLA.permission_lookup_id AND PLA.permission_id = ?
+            ";
+        $aGroups = GroupUtil::listGroupsForUserExpand($oUser);
+        $aPermissionDescriptors = KTPermissionDescriptor::getByGroups($aGroups, array('ids' => true));
+        $sPermissionDescriptors = DBUtil::paramArray($aPermissionDescriptors);
+        $sSQLString = "PLA.permission_descriptor_id IN ($sPermissionDescriptors)";
+        $aParams = array($oPermission->getId());
+        $aParams = array_merge($aParams, $aPermissionDescriptors);
+        return array($sSQLString, $aParams, $sJoinSQL);
+    }
+
+    function criteriaToQuery($aCriteriaSet, $oUser, $sPermissionName) {
+        global $default;
+        list($sSQLSearchString, $aCritParams, $sJoinSQL) = KTSearchUtil::criteriaSetToSQL($aCriteriaSet);
+
+        $sToSearch = KTUtil::arrayGet($aOrigReq, 'fToSearch', 'Live'); // actually never present in this version.
+
+        list ($sPermissionString, $aPermissionParams, $sPermissionJoin) = KTSearchUtil::permissionToSQL($oUser, $sPermissionName);
+        //$sQuery = DBUtil::compactQuery("
+        $sQuery = ("
+    SELECT
+        F.name AS folder_name, F.id AS folder_id, D.id AS document_id,
+        D.name AS document_name, D.filename AS file_name, COUNT(D.id) AS doc_count, 'View' AS view
+    FROM
+        $default->documents_table AS D
+        INNER JOIN $default->folders_table AS F ON D.folder_id = F.id
+        $sJoinSQL
+        INNER JOIN $default->status_table AS SL on D.status_id=SL.id
+        $sPermissionJoin
+    WHERE
+        $sPermissionString
+        AND SL.name = ?
+        AND ($sSQLSearchString)
+    GROUP BY D.id
+    ORDER BY doc_count DESC");
+
+        $aParams = array();
+        $aParams = array_merge($aParams, $aPermissionParams);
+        $aParams[] = $sToSearch;
+        $aParams = array_merge($aParams, $aCritParams);
+
+        return array($sQuery, $aParams);
+    }
+}
+