| /* |
| Licensed to the Apache Software Foundation (ASF) under one |
| or more contributor license agreements. See the NOTICE file |
| distributed with this work for additional information |
| regarding copyright ownership. The ASF licenses this file |
| to you 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 |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| 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 org.apache.cordova; |
| |
| import java.net.MalformedURLException; |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| import org.apache.cordova.LOG; |
| |
| import android.net.Uri; |
| |
| public class Whitelist { |
| private static class URLPattern { |
| public Pattern scheme; |
| public Pattern host; |
| public Integer port; |
| public Pattern path; |
| |
| private String regexFromPattern(String pattern, boolean allowWildcards) { |
| final String toReplace = "\\.[]{}()^$?+|"; |
| StringBuilder regex = new StringBuilder(); |
| for (int i=0; i < pattern.length(); i++) { |
| char c = pattern.charAt(i); |
| if (c == '*' && allowWildcards) { |
| regex.append("."); |
| } else if (toReplace.indexOf(c) > -1) { |
| regex.append('\\'); |
| } |
| regex.append(c); |
| } |
| return regex.toString(); |
| } |
| |
| public URLPattern(String scheme, String host, String port, String path) throws MalformedURLException { |
| try { |
| if (scheme == null || "*".equals(scheme)) { |
| this.scheme = null; |
| } else { |
| this.scheme = Pattern.compile(regexFromPattern(scheme, false)); |
| } |
| if ("*".equals(host)) { |
| this.host = null; |
| } else if (host.startsWith("*.")) { |
| this.host = Pattern.compile("([a-z0-9.-]*\\.)?" + regexFromPattern(host.substring(2), false)); |
| } else { |
| this.host = Pattern.compile(regexFromPattern(host, false)); |
| } |
| if (port == null || "*".equals(port)) { |
| this.port = null; |
| } else { |
| this.port = Integer.parseInt(port,10); |
| } |
| if (path == null || "/*".equals(path)) { |
| this.path = null; |
| } else { |
| this.path = Pattern.compile(regexFromPattern(path, true)); |
| } |
| } catch (NumberFormatException e) { |
| throw new MalformedURLException("Port must be a number"); |
| } |
| } |
| |
| public boolean matches(Uri uri) { |
| try { |
| return ((scheme == null || scheme.matcher(uri.getScheme()).matches()) && |
| (host == null || host.matcher(uri.getHost()).matches()) && |
| (port == null || port.equals(uri.getPort())) && |
| (path == null || path.matcher(uri.getPath()).matches())); |
| } catch (Exception e) { |
| LOG.d(TAG, e.toString()); |
| return false; |
| } |
| } |
| } |
| |
| private ArrayList<URLPattern> whiteList; |
| |
| public static final String TAG = "Whitelist"; |
| |
| public Whitelist() { |
| this.whiteList = new ArrayList<URLPattern>(); |
| } |
| |
| /* Match patterns (from http://developer.chrome.com/extensions/match_patterns.html) |
| * |
| * <url-pattern> := <scheme>://<host><path> |
| * <scheme> := '*' | 'http' | 'https' | 'file' | 'ftp' | 'chrome-extension' |
| * <host> := '*' | '*.' <any char except '/' and '*'>+ |
| * <path> := '/' <any chars> |
| * |
| * We extend this to explicitly allow a port attached to the host, and we allow |
| * the scheme to be omitted for backwards compatibility. (Also host is not required |
| * to begin with a "*" or "*.".) |
| */ |
| public void addWhiteListEntry(String origin, boolean subdomains) { |
| if (whiteList != null) { |
| try { |
| // Unlimited access to network resources |
| if (origin.compareTo("*") == 0) { |
| LOG.d(TAG, "Unlimited access to network resources"); |
| whiteList = null; |
| } |
| else { // specific access |
| Pattern parts = Pattern.compile("^((\\*|[a-z-]+)://)?(\\*|((\\*\\.)?[^*/:]+))?(:(\\d+))?(/.*)?"); |
| Matcher m = parts.matcher(origin); |
| if (m.matches()) { |
| String scheme = m.group(2); |
| String host = m.group(3); |
| // Special case for two urls which are allowed to have empty hosts |
| if (("file".equals(scheme) || "content".equals(scheme)) && host == null) host = "*"; |
| String port = m.group(7); |
| String path = m.group(8); |
| if (scheme == null) { |
| // XXX making it stupid friendly for people who forget to include protocol/SSL |
| whiteList.add(new URLPattern("http", host, port, path)); |
| whiteList.add(new URLPattern("https", host, port, path)); |
| } else { |
| whiteList.add(new URLPattern(scheme, host, port, path)); |
| } |
| } |
| } |
| } catch (Exception e) { |
| LOG.d(TAG, "Failed to add origin %s", origin); |
| } |
| } |
| } |
| |
| |
| /** |
| * Determine if URL is in approved list of URLs to load. |
| * |
| * @param uri |
| * @return |
| */ |
| public boolean isUrlWhiteListed(String uri) { |
| // If there is no whitelist, then it's wide open |
| if (whiteList == null) return true; |
| |
| Uri parsedUri = Uri.parse(uri); |
| // Look for match in white list |
| Iterator<URLPattern> pit = whiteList.iterator(); |
| while (pit.hasNext()) { |
| URLPattern p = pit.next(); |
| if (p.matches(parsedUri)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| } |