001/* 002 * (C) Copyright 2006-2016 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 * 016 * Contributors: 017 * Nuxeo - initial API and implementation 018 */ 019package org.nuxeo.ecm.platform.ui.web.restAPI; 020 021import static org.jboss.seam.ScopeType.EVENT; 022 023import java.io.IOException; 024import java.io.Serializable; 025import java.util.Map; 026 027import javax.servlet.http.HttpServletRequest; 028import javax.servlet.http.HttpServletResponse; 029 030import org.apache.commons.lang.StringUtils; 031import org.jboss.seam.annotations.In; 032import org.jboss.seam.annotations.Name; 033import org.jboss.seam.annotations.Scope; 034import org.nuxeo.ecm.core.api.Blob; 035import org.nuxeo.ecm.core.api.CoreSession; 036import org.nuxeo.ecm.core.api.DocumentModel; 037import org.nuxeo.ecm.core.api.IdRef; 038import org.nuxeo.ecm.core.api.NuxeoException; 039import org.nuxeo.ecm.core.io.download.DownloadService; 040import org.nuxeo.ecm.platform.ui.web.api.NavigationContext; 041import org.nuxeo.ecm.platform.ui.web.tag.fn.LiveEditConstants; 042import org.nuxeo.ecm.platform.util.RepositoryLocation; 043import org.nuxeo.runtime.api.Framework; 044import org.restlet.data.Request; 045import org.restlet.data.Response; 046 047/** 048 * Restlet to help LiveEdit clients download the blob content of a document 049 * 050 * @author Sun Tan <stan@nuxeo.com> 051 * @author Olivier Grisel <ogrisel@nuxeo.com> 052 */ 053@Name("downloadFileRestlet") 054@Scope(EVENT) 055public class DownloadFileRestlet extends BaseNuxeoRestlet implements LiveEditConstants, Serializable { 056 057 private static final long serialVersionUID = -2163290273836947871L; 058 059 @In(create = true) 060 protected transient NavigationContext navigationContext; 061 062 protected CoreSession documentManager; 063 064 @Override 065 public void handle(Request req, Response res) { 066 HttpServletRequest request = getHttpRequest(req); 067 HttpServletResponse response = getHttpResponse(res); 068 069 String repo = (String) req.getAttributes().get("repo"); 070 if (repo == null || repo.equals("*")) { 071 handleError(res, "you must specify a repository"); 072 return; 073 } 074 075 DocumentModel dm; 076 try { 077 navigationContext.setCurrentServerLocation(new RepositoryLocation(repo)); 078 documentManager = navigationContext.getOrCreateDocumentManager(); 079 String docid = (String) req.getAttributes().get("docid"); 080 if (docid != null) { 081 dm = documentManager.getDocument(new IdRef(docid)); 082 } else { 083 handleError(res, "you must specify a valid document IdRef"); 084 return; 085 } 086 } catch (NuxeoException e) { 087 handleError(res, e); 088 return; 089 } 090 091 try { 092 String blobPropertyName = getQueryParamValue(req, BLOB_PROPERTY_NAME, null); 093 String filenamePropertyName = getQueryParamValue(req, FILENAME_PROPERTY_NAME, null); 094 Blob blob; 095 String xpath; 096 String filename; 097 if (blobPropertyName != null && filenamePropertyName != null) { 098 filename = (String) dm.getPropertyValue(filenamePropertyName); 099 blob = (Blob) dm.getPropertyValue(blobPropertyName); 100 xpath = blobPropertyName; 101 } else { 102 String schemaName = getQueryParamValue(req, SCHEMA, DEFAULT_SCHEMA); 103 String blobFieldName = getQueryParamValue(req, BLOB_FIELD, DEFAULT_BLOB_FIELD); 104 blob = (Blob) dm.getProperty(schemaName, blobFieldName); 105 filename = StringUtils.defaultIfBlank(blob.getFilename(), "file"); 106 xpath = schemaName + ':' + blobFieldName; 107 } 108 109 // trigger download 110 String reason = "download"; 111 Map<String, Serializable> extendedInfos = null; 112 DownloadService downloadService = Framework.getService(DownloadService.class); 113 downloadService.downloadBlob(request, response, dm, xpath, blob, filename, reason, extendedInfos, null, 114 byteRange -> setEntityToBlobOutput(blob, byteRange, res)); 115 } catch (IOException | NuxeoException e) { 116 handleError(res, e); 117 } 118 } 119 120}