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/**
* Copyright 2017 Google Inc. All Rights Reserved.
*
* <p>Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of the License at
*
* <p>http://www.apache.org/licenses/LICENSE-2.0
*
* <p>Unless required by applicable law or agreed to in writing, software distributed under the
* License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.vts.util;
import java.net.MalformedURLException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
/** UrlUtil, a helper class for formatting and validating URLs. */
public class UrlUtil {
private static final String HTTPS = "https";
public static class LinkDisplay {
public final String name;
public final String url;
/**
* Create a link display object.
*
* @param uri The hyperlink URI.
*/
public LinkDisplay(URI uri) {
this.url = uri.toString();
// Parse the name from the URI path
int lastSeparator = uri.getPath().lastIndexOf('/');
if (lastSeparator < 0) {
this.name = uri.toString();
} else {
this.name = uri.getPath().substring(lastSeparator + 1);
}
}
}
/**
* Validates and formats a URL.
*
* <p>Ensures that the protocol is HTTPs and the URL is properly formatted. This avoids link
* issues in the UI and possible vulnerabilities due to embedded JS in URLs.
*
* @param urlString The url string to validate.
* @returns The validated LinkDisplay object.
*/
public static LinkDisplay processUrl(String urlString) {
try {
URL url = new URL(urlString);
String scheme = url.getProtocol();
String userInfo = url.getUserInfo();
String host = url.getHost();
int port = url.getPort();
String path = url.getPath();
String query = url.getQuery();
String fragment = url.getRef();
if (!url.getProtocol().equals(HTTPS))
throw new MalformedURLException();
URI uri = new URI(scheme, userInfo, host, port, path, query, fragment);
return new LinkDisplay(uri);
} catch (MalformedURLException | URISyntaxException e) {
return null;
}
}
}
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