| /* |
| * reserved comment block |
| * DO NOT REMOVE OR ALTER! |
| */ |
| /** |
| * 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 com.sun.org.apache.xml.internal.security.utils.resolver.implementations; |
| |
| import java.io.FileInputStream; |
| import java.net.URI; |
| import java.net.URISyntaxException; |
| |
| import com.sun.org.apache.xml.internal.security.signature.XMLSignatureInput; |
| import com.sun.org.apache.xml.internal.security.utils.resolver.ResourceResolverContext; |
| import com.sun.org.apache.xml.internal.security.utils.resolver.ResourceResolverException; |
| import com.sun.org.apache.xml.internal.security.utils.resolver.ResourceResolverSpi; |
| |
| /** |
| * A simple ResourceResolver for requests into the local filesystem. |
| */ |
| public class ResolverLocalFilesystem extends ResourceResolverSpi { |
| |
| private static final int FILE_URI_LENGTH = "file:/".length(); |
| |
| /** {@link org.apache.commons.logging} logging facility */ |
| private static java.util.logging.Logger log = |
| java.util.logging.Logger.getLogger(ResolverLocalFilesystem.class.getName()); |
| |
| @Override |
| public boolean engineIsThreadSafe() { |
| return true; |
| } |
| |
| /** |
| * @inheritDoc |
| */ |
| @Override |
| public XMLSignatureInput engineResolveURI(ResourceResolverContext context) |
| throws ResourceResolverException { |
| try { |
| // calculate new URI |
| URI uriNew = getNewURI(context.uriToResolve, context.baseUri); |
| |
| String fileName = |
| ResolverLocalFilesystem.translateUriToFilename(uriNew.toString()); |
| FileInputStream inputStream = new FileInputStream(fileName); |
| XMLSignatureInput result = new XMLSignatureInput(inputStream); |
| |
| result.setSourceURI(uriNew.toString()); |
| |
| return result; |
| } catch (Exception e) { |
| throw new ResourceResolverException("generic.EmptyMessage", e, context.attr, context.baseUri); |
| } |
| } |
| |
| /** |
| * Method translateUriToFilename |
| * |
| * @param uri |
| * @return the string of the filename |
| */ |
| private static String translateUriToFilename(String uri) { |
| |
| String subStr = uri.substring(FILE_URI_LENGTH); |
| |
| if (subStr.indexOf("%20") > -1) { |
| int offset = 0; |
| int index = 0; |
| StringBuilder temp = new StringBuilder(subStr.length()); |
| do { |
| index = subStr.indexOf("%20",offset); |
| if (index == -1) { |
| temp.append(subStr.substring(offset)); |
| } else { |
| temp.append(subStr.substring(offset, index)); |
| temp.append(' '); |
| offset = index + 3; |
| } |
| } while(index != -1); |
| subStr = temp.toString(); |
| } |
| |
| if (subStr.charAt(1) == ':') { |
| // we're running M$ Windows, so this works fine |
| return subStr; |
| } |
| // we're running some UNIX, so we have to prepend a slash |
| return "/" + subStr; |
| } |
| |
| /** |
| * @inheritDoc |
| */ |
| public boolean engineCanResolveURI(ResourceResolverContext context) { |
| if (context.uriToResolve == null) { |
| return false; |
| } |
| |
| if (context.uriToResolve.equals("") || (context.uriToResolve.charAt(0)=='#') || |
| context.uriToResolve.startsWith("http:")) { |
| return false; |
| } |
| |
| try { |
| if (log.isLoggable(java.util.logging.Level.FINE)) { |
| log.log(java.util.logging.Level.FINE, "I was asked whether I can resolve " + context.uriToResolve); |
| } |
| |
| if (context.uriToResolve.startsWith("file:") || context.baseUri.startsWith("file:")) { |
| if (log.isLoggable(java.util.logging.Level.FINE)) { |
| log.log(java.util.logging.Level.FINE, "I state that I can resolve " + context.uriToResolve); |
| } |
| return true; |
| } |
| } catch (Exception e) { |
| if (log.isLoggable(java.util.logging.Level.FINE)) { |
| log.log(java.util.logging.Level.FINE, e.getMessage(), e); |
| } |
| } |
| |
| if (log.isLoggable(java.util.logging.Level.FINE)) { |
| log.log(java.util.logging.Level.FINE, "But I can't"); |
| } |
| |
| return false; |
| } |
| |
| private static URI getNewURI(String uri, String baseURI) throws URISyntaxException { |
| URI newUri = null; |
| if (baseURI == null || "".equals(baseURI)) { |
| newUri = new URI(uri); |
| } else { |
| newUri = new URI(baseURI).resolve(uri); |
| } |
| |
| // if the URI contains a fragment, ignore it |
| if (newUri.getFragment() != null) { |
| URI uriNewNoFrag = |
| new URI(newUri.getScheme(), newUri.getSchemeSpecificPart(), null); |
| return uriNewNoFrag; |
| } |
| return newUri; |
| } |
| } |