[25054] | 1 | package org.greenstone.gsdl3;
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| 2 |
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[25717] | 3 | import java.io.File;
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| 4 | import java.io.FileInputStream;
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| 5 | import java.io.FileOutputStream;
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| 6 | import java.io.IOException;
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| 7 | import java.io.PrintWriter;
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[25054] | 8 | import java.nio.channels.FileChannel;
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| 9 | import java.util.Iterator;
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| 10 | import java.util.List;
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| 11 | import java.util.Map;
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| 12 |
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[25717] | 13 | import javax.servlet.ServletException;
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| 14 | import javax.servlet.ServletOutputStream;
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| 15 | import javax.servlet.http.HttpServletRequest;
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| 16 | import javax.servlet.http.HttpServletResponse;
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[25054] | 17 |
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| 18 | import org.apache.commons.fileupload.FileItem;
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| 19 | import org.apache.commons.fileupload.disk.DiskFileItemFactory;
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| 20 | import org.apache.commons.fileupload.servlet.ServletFileUpload;
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| 21 | import org.greenstone.gsdl3.util.GSParams;
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| 22 | import org.greenstone.util.GlobalProperties;
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| 23 |
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| 24 | public class FileLoaderServlet extends LibraryServlet
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| 25 | {
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| 26 | public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
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| 27 | {
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| 28 | if (request.getMethod().equals("POST"))
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| 29 | {
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| 30 | DiskFileItemFactory fileItemFactory = new DiskFileItemFactory();
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| 31 |
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| 32 | int sizeLimit = System.getProperties().containsKey("servlet.upload.filesize.limit") ? Integer.parseInt(System.getProperty("servlet.upload.filesize.limit")) : 20 * 1024 * 1024;
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| 33 |
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| 34 | fileItemFactory.setSizeThreshold(sizeLimit);
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| 35 | fileItemFactory.setRepository(new File(GlobalProperties.getGSDL3Home() + File.separator + "tmp"));
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| 36 |
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| 37 | ServletFileUpload uploadHandler = new ServletFileUpload(fileItemFactory);
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| 38 |
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| 39 | String storageLocation = "";
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| 40 | File uploadedFile = null;
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| 41 | Boolean ajaxUpload = false;
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| 42 | StringBuilder json = new StringBuilder("[");
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| 43 | try
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| 44 | {
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| 45 | List items = uploadHandler.parseRequest(request);
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| 46 | Iterator iter = items.iterator();
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| 47 | while (iter.hasNext())
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| 48 | {
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| 49 | FileItem current = (FileItem) iter.next();
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| 50 | if (current.isFormField())
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| 51 | {
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| 52 | if (current.getFieldName().equals(GSParams.FILE_LOCATION))
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| 53 | {
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| 54 | storageLocation = current.getString();
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| 55 | }
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[25717] | 56 |
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[25054] | 57 | if (current.getFieldName().equals("ajaxUpload") && current.getString().equals("true"))
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| 58 | {
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| 59 | ajaxUpload = true;
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| 60 | }
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| 61 | }
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| 62 | else
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| 63 | {
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| 64 | File file = new File(GlobalProperties.getGSDL3Home() + File.separator + "tmp" + File.separator + current.getName());
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| 65 | File tmpFolder = new File(GlobalProperties.getGSDL3Home() + File.separator + "tmp");
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| 66 | if (!tmpFolder.exists())
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| 67 | {
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| 68 | tmpFolder.mkdirs();
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| 69 | }
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| 70 | current.write(file);
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| 71 |
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| 72 | uploadedFile = file;
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[25717] | 73 |
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| 74 | if (!json.toString().equals("["))
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[25054] | 75 | {
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| 76 | json.append(",");
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| 77 | }
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[25717] | 78 |
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[25054] | 79 | json.append("{");
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| 80 | json.append("\"name\":\"" + file.getName() + "\",");
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| 81 | json.append("\"size\":\"" + file.length() + "\",");
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| 82 | json.append("\"url\":\"" + "tmp/" + current.getName() + "\",");
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| 83 | json.append("\"thumbnail_url\":\"" + "tmp/" + current.getName() + "\",");
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| 84 | json.append("\"delete_url\":\"\",");
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| 85 | json.append("\"delete_type\":\"\"");
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| 86 | json.append("}");
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| 87 | }
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| 88 | }
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| 89 | json.append("]");
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[25717] | 90 |
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| 91 | if (ajaxUpload)
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[25054] | 92 | {
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| 93 | response.setContentType("application/json");
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| 94 | PrintWriter writer = response.getWriter();
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| 95 | writer.write(json.toString());
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| 96 | writer.flush();
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[25717] | 97 |
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[25054] | 98 | return;
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| 99 | }
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| 100 |
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| 101 | if (!storageLocation.equals("") && uploadedFile != null)
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| 102 | {
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| 103 | String[] locations = storageLocation.split(":");
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| 104 |
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| 105 | for (String location : locations)
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| 106 | {
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| 107 | File toFile = new File(GlobalProperties.getGSDL3Home() + location);
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| 108 | if (toFile.exists())
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| 109 | {
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| 110 | File backupFile = new File(toFile.getAbsolutePath() + System.currentTimeMillis());
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| 111 |
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| 112 | logger.info("Backing up file (" + toFile.getAbsolutePath() + ") to " + backupFile.getAbsolutePath());
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| 113 | toFile.renameTo(backupFile);
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| 114 | }
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| 115 |
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| 116 | FileChannel source = null;
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| 117 | FileChannel destination = null;
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| 118 | try
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| 119 | {
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| 120 | logger.info("Moving uploaded file (" + uploadedFile.getAbsolutePath() + ") to " + toFile.getAbsolutePath());
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| 121 | source = new FileInputStream(uploadedFile).getChannel();
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| 122 | destination = new FileOutputStream(toFile).getChannel();
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| 123 | destination.transferFrom(source, 0, source.size());
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| 124 | }
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| 125 | finally
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| 126 | {
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| 127 | if (source != null)
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| 128 | {
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| 129 | source.close();
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| 130 | }
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| 131 | if (destination != null)
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| 132 | {
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| 133 | destination.close();
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| 134 | }
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| 135 | }
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| 136 |
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| 137 | }
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| 138 | }
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| 139 | }
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| 140 | catch (Exception e)
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| 141 | {
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| 142 | logger.error("Exception in LibraryServlet -> " + e.getMessage());
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| 143 | }
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| 144 | }
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| 145 | else
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| 146 | {
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| 147 | Map<String, String[]> queryMap = request.getParameterMap();
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| 148 | Iterator<String> queryIter = queryMap.keySet().iterator();
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[25717] | 149 |
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| 150 | while (queryIter.hasNext())
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[25054] | 151 | {
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| 152 | String q = queryIter.next();
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| 153 | if (q.equals("downloadFile"))
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| 154 | {
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| 155 | String fileLocation = queryMap.get(q)[0];
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| 156 | File fileToGet = new File(GlobalProperties.getGSDL3Home() + File.separator + fileLocation);
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[25717] | 157 |
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[25054] | 158 | if (fileToGet.exists())
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| 159 | {
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| 160 | response.setContentType("application/octet-stream");
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[25717] | 161 | response.addHeader("Content-Disposition", "attachment;filename=" + fileToGet.getName());
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[25054] | 162 | FileInputStream fis = new FileInputStream(fileToGet);
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| 163 | ServletOutputStream sos = response.getOutputStream();
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[25717] | 164 |
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[25054] | 165 | byte[] buffer = new byte[4096];
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| 166 | int len;
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| 167 | while ((len = fis.read(buffer)) != -1)
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| 168 | {
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| 169 | sos.write(buffer, 0, len);
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| 170 | }
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| 171 | sos.flush();
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| 172 | fis.close();
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| 173 | sos.close();
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[25717] | 174 |
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[25054] | 175 | return;
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| 176 | }
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| 177 | }
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| 178 | }
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| 179 | }
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[25061] | 180 |
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| 181 | super.doGet(request, response);
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[25054] | 182 | }
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| 183 |
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| 184 | public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
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| 185 | {
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| 186 | doGet(request, response);
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| 187 | }
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| 188 | }
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