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package it.inaf.oats.vospace.datamodel;
import java.util.ArrayList;
import java.util.List;
import net.ivoa.xml.vospace.v2.Node;
public class NodeUtils {
/**
* Slash is a special character in defining REST endpoints and trying to
* define a PathVariable containing slashes doesn't work, so the endpoint
* has been defined using "/nodes/**" instead of "/nodes/{path}" and the
* path is extracted manually parsing the request URL.
*/
public static String getPathFromRequestURLString(String requestUrlString) {
String[] split = requestUrlString.split("/nodes/");
String path = "/";
if (split.length == 2) {
path += split[1];
}
return path;
}
// This method assumes that URL is in the format /node1/node2/...
// multiple slashes as a single separator are allowed
// But the output has only single slash separators
public static String getParentPath(String path) {
String[] parsedPath = path.split("[/]+");
if (parsedPath.length < 2 || !parsedPath[0].isEmpty()) {
throw new IllegalArgumentException();
}
StringBuilder sb = new StringBuilder();
sb.append("/");
for (int i = 1; i < parsedPath.length - 1; i++) {
sb.append(parsedPath[i]);
if (i < parsedPath.length - 2) {
sb.append("/");
}
}
return sb.toString();
}
public static List<String> subPathComponents(String path) {
List resultList = new ArrayList<String>();
String[] pathComponents = path.split("[/]+");
if (pathComponents.length == 0) {
// Manage root node
resultList.add("/");
// Manage all precursors in full path
String parentPath = "/";
for (int i = 1; i < pathComponents.length; i++) {
parentPath = parentPath + pathComponents[i] + "/";
// "I'm managing path = " + parentPath.substring(0, parentPath.length()-1));
resultList.add(parentPath.substring(0, parentPath.length() - 1));
return resultList;
}
public static boolean checkIfReadable(Node myNode, String userName, List<String> userGroups) {
if ("true".equals(NodeProperties.getNodePropertyByURI(myNode, NodeProperties.PUBLIC_READ_URI))) {
return true;
}
String creator = NodeProperties.getNodePropertyByURI(myNode, NodeProperties.CREATOR_URI);
if (creator != null && creator.equals(userName)) {
return true;
}
if (userGroups == null || userGroups.isEmpty()) {
return false;
}
List<String> groupReadValues = NodeProperties.getNodePropertyAsListByURI(myNode, NodeProperties.GROUP_READ_URI);
if (groupReadValues == null) {
return false;
}
for (String group : groupReadValues) {
if (userGroups.contains(group)) {
return true;
}
}
return false;
public static boolean checkIfWritable(Node myNode, String userName, List<String> userGroups) {
// First check if parent node creator is == userid
List<String> nodeOwner
= NodeProperties.getNodePropertyAsListByURI(myNode, NodeProperties.CREATOR_URI);
if (nodeOwner == null
|| nodeOwner.isEmpty()
|| !nodeOwner.get(0).equals(userName)) {
// Node owner check has failed: let's check if user can write
// due to group privileges
// If the user doesn't belong to any groups throw exception
if (userGroups == null || userGroups.isEmpty()) {
return false;
}
List<String> groupWritePropValues
= NodeProperties.getNodePropertyAsListByURI(myNode,
NodeProperties.GROUP_WRITE_URI);
// If groupwrite property is absent in Parent Node throw exception
if (groupWritePropValues == null
|| groupWritePropValues.isEmpty()) {
return false;
}
List<String> nodeGroups
= NodeProperties.parsePropertyStringToList(groupWritePropValues.get(0));
if (nodeGroups.isEmpty()
|| !nodeGroups.stream()
.anyMatch((i) -> userGroups.contains(i))) {
return false;
}
}
return true;
}
}