Source Code Cross Referenced for FileUploadPlugin.java in  » Blogger-System » blojsom-3.1 » org » blojsom » plugin » admin » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Blogger System » blojsom 3.1 » org.blojsom.plugin.admin 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /**
002:         * Copyright (c) 2003-2007, David A. Czarnecki
003:         * All rights reserved.
004:         *
005:         * Redistribution and use in source and binary forms, with or without
006:         * modification, are permitted provided that the following conditions are met:
007:         *
008:         * Redistributions of source code must retain the above copyright notice, this list of conditions and the
009:         *     following disclaimer.
010:         * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
011:         *     following disclaimer in the documentation and/or other materials provided with the distribution.
012:         * Neither the name of "David A. Czarnecki" and "blojsom" nor the names of its contributors may be used to
013:         *     endorse or promote products derived from this software without specific prior written permission.
014:         * Products derived from this software may not be called "blojsom", nor may "blojsom" appear in their name,
015:         *     without prior written permission of David A. Czarnecki.
016:         *
017:         * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
018:         * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
019:         * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
020:         * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
021:         * EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
022:         * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
023:         * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
024:         * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
025:         * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
026:         * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
027:         * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
028:         * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
029:         * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
030:         */package org.blojsom.plugin.admin;
031:
032:        import org.apache.commons.fileupload.FileItem;
033:        import org.apache.commons.fileupload.FileUploadException;
034:        import org.apache.commons.fileupload.disk.DiskFileItemFactory;
035:        import org.apache.commons.fileupload.servlet.ServletFileUpload;
036:        import org.apache.commons.logging.Log;
037:        import org.apache.commons.logging.LogFactory;
038:        import org.blojsom.blog.Blog;
039:        import org.blojsom.blog.Entry;
040:        import org.blojsom.plugin.PluginException;
041:        import org.blojsom.util.BlojsomConstants;
042:        import org.blojsom.util.BlojsomUtils;
043:
044:        import javax.servlet.http.HttpServletRequest;
045:        import javax.servlet.http.HttpServletResponse;
046:        import java.io.File;
047:        import java.util.*;
048:
049:        /**
050:         * FileUploadPlugin
051:         *
052:         * @author David Czarnecki
053:         * @version $Id: FileUploadPlugin.java,v 1.3 2007/01/17 02:35:05 czarneckid Exp $
054:         * @since blojsom 3.0
055:         */
056:        public class FileUploadPlugin extends BaseAdminPlugin {
057:
058:            private Log _logger = LogFactory.getLog(FileUploadPlugin.class);
059:
060:            // Localization constants
061:            private static final String FAILED_PERMISSION_KEY = "file.upload.failed.permission.text";
062:            private static final String FAILED_RESOURCE_KEY = "file.upload.failed.resource.text";
063:            private static final String UNKNOWN_ERROR_KEY = "file.upload.unknown.error.text";
064:            private static final String SUCCESSFUL_UPLOAD_KEY = "successful.upload.text";
065:            private static final String INVALID_EXTENSION_KEY = "invalid.upload.extension.text";
066:            private static final String INVALID_TYPE_KEY = "invalid.upload.type.text";
067:            private static final String DELETED_FILES_KEY = "deleted.files.text";
068:            private static final String UPLOAD_LIMIT_KEY = "upload.limit.exceeded.text";
069:
070:            private static final String RESOURCES_DIRECTORY_IP = "resources-directory";
071:            private static final String TEMPORARY_DIRECTORY_IP = "temporary-directory";
072:            private static final String DEFAULT_TEMPORARY_DIRECTORY = "/tmp";
073:            private static final String MAXIMUM_UPLOAD_SIZE_IP = "maximum-upload-size";
074:            private static final long DEFAULT_MAXIMUM_UPLOAD_SIZE = 100000;
075:            private static final String MAXIMUM_MEMORY_SIZE_IP = "maximum-memory-size";
076:            private static final int DEFAULT_MAXIMUM_MEMORY_SIZE = 50000;
077:            private static final String ACCEPTED_FILE_TYPES_IP = "accepted-file-types";
078:            private static final String[] DEFAULT_ACCEPTED_FILE_TYPES = {
079:                    "image/jpeg", "image/gif", "image/png" };
080:            private static final String INVALID_FILE_EXTENSIONS_IP = "invalid-file-extensions";
081:            private static final String[] DEFAULT_INVALID_FILE_EXTENSIONS = {
082:                    ".jsp", ".jspf", ".jspi", ".jspx", ".php", ".cgi" };
083:            private static final String UPLOAD_QUOTA_ENABLED_IP = "upload-quota-enabled";
084:            private static final String UPLOAD_QUOTA_LIMIT_IP = "upload-quota-limit";
085:            private static final long DEFAULT_UPLOAD_QUOTA_LIMIT = 10485760;
086:
087:            // Pages
088:            private static final String FILE_UPLOAD_PAGE = "/org/blojsom/plugin/admin/templates/admin-file-upload";
089:
090:            // Constants
091:            private static final String PLUGIN_ADMIN_FILE_UPLOAD_FILES = "PLUGIN_ADMIN_FILE_UPLOAD_FILES";
092:            private static final String ACCEPTED_FILE_TYPES = "ACCEPTED_FILE_TYPES";
093:            private static final String INVALID_FILE_EXTENSIONS = "INVALID_FILE_EXTENSIONS";
094:
095:            // Actions
096:            private static final String UPLOAD_FILE_ACTION = "upload-file";
097:            private static final String DELETE_UPLOAD_FILES = "delete-upload-files";
098:
099:            // Form items
100:            private static final String FILE_TO_DELETE = "file-to-delete";
101:
102:            // Permissions
103:            private static final String FILE_UPLOAD_PERMISSION = "file_upload_permission";
104:
105:            private String _temporaryDirectory;
106:            private long _maximumUploadSize;
107:            private int _maximumMemorySize;
108:            private Map _acceptedFileTypes;
109:            private String _resourcesDirectory;
110:            private String[] _invalidFileExtensions;
111:            private boolean _uploadQuotaEnabled;
112:            private long _uploadQuotaLimit;
113:            private Properties _fileUploadProperties;
114:
115:            /**
116:             * Default constructor.
117:             */
118:            public FileUploadPlugin() {
119:            }
120:
121:            /**
122:             * Set the file upload properties
123:             *
124:             * @param fileUploadProperties File upload properties
125:             */
126:            public void setFileUploadProperties(Properties fileUploadProperties) {
127:                _fileUploadProperties = fileUploadProperties;
128:            }
129:
130:            /**
131:             * Initialize this plugin. This method only called when the plugin is instantiated.
132:             *
133:             * @throws org.blojsom.plugin.PluginException
134:             *          If there is an error initializing the plugin
135:             */
136:            public void init() throws PluginException {
137:                super .init();
138:
139:                _temporaryDirectory = _fileUploadProperties
140:                        .getProperty(TEMPORARY_DIRECTORY_IP);
141:                if (BlojsomUtils.checkNullOrBlank(_temporaryDirectory)) {
142:                    _temporaryDirectory = DEFAULT_TEMPORARY_DIRECTORY;
143:                }
144:                _logger.debug("Using temporary directory: "
145:                        + _temporaryDirectory);
146:
147:                try {
148:                    _maximumUploadSize = Long.parseLong(_fileUploadProperties
149:                            .getProperty(MAXIMUM_UPLOAD_SIZE_IP));
150:                } catch (NumberFormatException e) {
151:                    _maximumUploadSize = DEFAULT_MAXIMUM_UPLOAD_SIZE;
152:                }
153:                _logger.debug("Using maximum upload size: "
154:                        + _maximumUploadSize);
155:
156:                try {
157:                    _maximumMemorySize = Integer.parseInt(_fileUploadProperties
158:                            .getProperty(MAXIMUM_MEMORY_SIZE_IP));
159:                } catch (NumberFormatException e) {
160:                    _maximumMemorySize = DEFAULT_MAXIMUM_MEMORY_SIZE;
161:                }
162:                _logger.debug("Using maximum memory size: "
163:                        + _maximumMemorySize);
164:
165:                String acceptedFileTypes = _fileUploadProperties
166:                        .getProperty(ACCEPTED_FILE_TYPES_IP);
167:                String[] parsedListOfTypes;
168:                if (BlojsomUtils.checkNullOrBlank(acceptedFileTypes)) {
169:                    parsedListOfTypes = DEFAULT_ACCEPTED_FILE_TYPES;
170:                } else {
171:                    parsedListOfTypes = BlojsomUtils
172:                            .parseCommaList(acceptedFileTypes);
173:                }
174:                _acceptedFileTypes = new HashMap(parsedListOfTypes.length);
175:                for (int i = 0; i < parsedListOfTypes.length; i++) {
176:                    String type = parsedListOfTypes[i];
177:                    _acceptedFileTypes.put(type, type);
178:                }
179:                _logger.debug("Using accepted file types: "
180:                        + BlojsomUtils
181:                                .arrayOfStringsToString(parsedListOfTypes));
182:
183:                _resourcesDirectory = _fileUploadProperties
184:                        .getProperty(RESOURCES_DIRECTORY_IP);
185:                if (BlojsomUtils.checkNullOrBlank(_resourcesDirectory)) {
186:                    _resourcesDirectory = BlojsomConstants.DEFAULT_RESOURCES_DIRECTORY;
187:                }
188:
189:                _resourcesDirectory = BlojsomUtils
190:                        .checkStartingAndEndingSlash(_resourcesDirectory);
191:                _logger.debug("Using resources directory: "
192:                        + _resourcesDirectory);
193:
194:                String invalidFileExtensionsProperty = _fileUploadProperties
195:                        .getProperty(INVALID_FILE_EXTENSIONS_IP);
196:                if (BlojsomUtils
197:                        .checkNullOrBlank(invalidFileExtensionsProperty)) {
198:                    _invalidFileExtensions = DEFAULT_INVALID_FILE_EXTENSIONS;
199:                } else {
200:                    _invalidFileExtensions = BlojsomUtils
201:                            .parseCommaList(invalidFileExtensionsProperty);
202:                }
203:                _logger.debug("Using invalid file extensions: "
204:                        + invalidFileExtensionsProperty);
205:
206:                _uploadQuotaEnabled = Boolean.valueOf(
207:                        _fileUploadProperties
208:                                .getProperty(UPLOAD_QUOTA_ENABLED_IP))
209:                        .booleanValue();
210:                if (_uploadQuotaEnabled) {
211:                    String uploadQuotaLimit = _fileUploadProperties
212:                            .getProperty(UPLOAD_QUOTA_LIMIT_IP);
213:                    if (BlojsomUtils.checkNullOrBlank(uploadQuotaLimit)) {
214:                        _uploadQuotaLimit = DEFAULT_UPLOAD_QUOTA_LIMIT;
215:                    } else {
216:                        try {
217:                            _uploadQuotaLimit = Long
218:                                    .parseLong(uploadQuotaLimit);
219:                            if (_uploadQuotaLimit <= 0) {
220:                                _uploadQuotaLimit = DEFAULT_UPLOAD_QUOTA_LIMIT;
221:                            }
222:                        } catch (NumberFormatException e) {
223:                            _uploadQuotaLimit = DEFAULT_UPLOAD_QUOTA_LIMIT;
224:                        }
225:                    }
226:
227:                    _logger.debug("Upload limit enabled. Quota is : "
228:                            + _uploadQuotaLimit + " bytes");
229:                }
230:            }
231:
232:            /**
233:             * Return the size of a directory by getting the size of all its files and all of its directories files
234:             *
235:             * @param directory Directory whose size should be retrieved
236:             * @return Size of files in a directory or -1 if the original argument was not a directory
237:             */
238:            protected long getDirectorySize(File directory) {
239:                if (!directory.isDirectory()) {
240:                    return -1;
241:                }
242:
243:                long totalSize = 0;
244:
245:                File[] files = directory.listFiles();
246:                for (int i = 0; i < files.length; i++) {
247:                    File file = files[i];
248:
249:                    if (file.isDirectory()) {
250:                        totalSize += getDirectorySize(file);
251:                    } else {
252:                        totalSize += file.length();
253:                    }
254:                }
255:
256:                return totalSize;
257:            }
258:
259:            /**
260:             * Process the blog entries
261:             *
262:             * @param httpServletRequest  Request
263:             * @param httpServletResponse Response
264:             * @param blog                {@link Blog} instance
265:             * @param context             Context
266:             * @param entries             Blog entries retrieved for the particular request
267:             * @return Modified set of blog entries
268:             * @throws PluginException If there is an error processing the blog entries
269:             */
270:            public Entry[] process(HttpServletRequest httpServletRequest,
271:                    HttpServletResponse httpServletResponse, Blog blog,
272:                    Map context, Entry[] entries) throws PluginException {
273:                if (!authenticateUser(httpServletRequest, httpServletResponse,
274:                        context, blog)) {
275:                    httpServletRequest.setAttribute(
276:                            BlojsomConstants.PAGE_PARAM, ADMIN_LOGIN_PAGE);
277:
278:                    return entries;
279:                }
280:
281:                String username = getUsernameFromSession(httpServletRequest,
282:                        blog);
283:                if (!checkPermission(blog, null, username,
284:                        FILE_UPLOAD_PERMISSION)) {
285:                    httpServletRequest.setAttribute(
286:                            BlojsomConstants.PAGE_PARAM,
287:                            ADMIN_ADMINISTRATION_PAGE);
288:                    addOperationResultMessage(context, getAdminResource(
289:                            FAILED_PERMISSION_KEY, FAILED_PERMISSION_KEY, blog
290:                                    .getBlogAdministrationLocale()));
291:
292:                    return entries;
293:                }
294:
295:                File resourceDirectory = new File(_servletConfig
296:                        .getServletContext().getRealPath("/")
297:                        + _resourcesDirectory + blog.getBlogId() + "/");
298:
299:                String action = BlojsomUtils.getRequestValue(ACTION_PARAM,
300:                        httpServletRequest);
301:                if (BlojsomUtils.checkNullOrBlank(action)) {
302:                    _logger.debug("User did not request edit action");
303:
304:                    httpServletRequest.setAttribute(
305:                            BlojsomConstants.PAGE_PARAM,
306:                            ADMIN_ADMINISTRATION_PAGE);
307:                } else if (PAGE_ACTION.equals(action)) {
308:                    _logger.debug("User requested file upload page");
309:
310:                    httpServletRequest.setAttribute(
311:                            BlojsomConstants.PAGE_PARAM, FILE_UPLOAD_PAGE);
312:                } else if (UPLOAD_FILE_ACTION.equals(action)) {
313:                    _logger.debug("User requested file upload action");
314:
315:                    // Create a factory for disk-based file items
316:                    DiskFileItemFactory factory = new DiskFileItemFactory();
317:
318:                    // Set factory constraints
319:                    factory.setSizeThreshold(_maximumMemorySize);
320:                    factory.setRepository(new File(_temporaryDirectory));
321:
322:                    ServletFileUpload upload = new ServletFileUpload(factory);
323:
324:                    // Set overall request size constraint
325:                    upload.setSizeMax(_maximumUploadSize);
326:
327:                    try {
328:                        List items = upload.parseRequest(httpServletRequest);
329:                        Iterator itemsIterator = items.iterator();
330:                        while (itemsIterator.hasNext()) {
331:                            FileItem item = (FileItem) itemsIterator.next();
332:
333:                            // Check for the file upload form item
334:                            if (!item.isFormField()) {
335:                                String itemNameWithoutPath = BlojsomUtils
336:                                        .getFilenameFromPath(item.getName());
337:
338:                                _logger.debug("Found file item: "
339:                                        + itemNameWithoutPath + " of type: "
340:                                        + item.getContentType());
341:
342:                                // Is it one of the accepted file types?
343:                                String fileType = item.getContentType();
344:                                boolean isAcceptedFileType = _acceptedFileTypes
345:                                        .containsKey(fileType);
346:
347:                                String extension = BlojsomUtils
348:                                        .getFileExtension(itemNameWithoutPath);
349:                                boolean isAcceptedFileExtension = true;
350:                                for (int i = 0; i < _invalidFileExtensions.length; i++) {
351:                                    String invalidFileExtension = _invalidFileExtensions[i];
352:                                    if (itemNameWithoutPath
353:                                            .indexOf(invalidFileExtension) != -1) {
354:                                        isAcceptedFileExtension = false;
355:                                        break;
356:                                    }
357:                                }
358:
359:                                if (_uploadQuotaEnabled) {
360:                                    boolean overQuota = true;
361:                                    long currentLimit = getDirectorySize(resourceDirectory);
362:                                    if ((currentLimit != -1)
363:                                            && ((currentLimit + item.getSize() < _uploadQuotaLimit))) {
364:                                        overQuota = false;
365:                                    }
366:
367:                                    if (overQuota) {
368:                                        _logger
369:                                                .error("Upload quota exceeded trying to upload file: "
370:                                                        + itemNameWithoutPath);
371:                                        addOperationResultMessage(
372:                                                context,
373:                                                formatAdminResource(
374:                                                        UPLOAD_LIMIT_KEY,
375:                                                        UPLOAD_LIMIT_KEY,
376:                                                        blog
377:                                                                .getBlogAdministrationLocale(),
378:                                                        new Object[] {
379:                                                                itemNameWithoutPath,
380:                                                                new Long(
381:                                                                        _uploadQuotaLimit) }));
382:
383:                                        break;
384:                                    }
385:                                }
386:
387:                                // If so, upload the file to the resources directory
388:                                if (isAcceptedFileType
389:                                        && isAcceptedFileExtension) {
390:                                    if (!resourceDirectory.exists()) {
391:                                        if (!resourceDirectory.mkdirs()) {
392:                                            _logger
393:                                                    .error("Unable to create resource directory for user: "
394:                                                            + resourceDirectory
395:                                                                    .toString());
396:                                            addOperationResultMessage(
397:                                                    context,
398:                                                    getAdminResource(
399:                                                            FAILED_RESOURCE_KEY,
400:                                                            FAILED_RESOURCE_KEY,
401:                                                            blog
402:                                                                    .getBlogAdministrationLocale()));
403:                                            return entries;
404:                                        }
405:                                    }
406:
407:                                    File resourceFile = new File(
408:                                            resourceDirectory,
409:                                            itemNameWithoutPath);
410:                                    try {
411:                                        item.write(resourceFile);
412:                                    } catch (Exception e) {
413:                                        _logger.error(e);
414:                                        addOperationResultMessage(
415:                                                context,
416:                                                formatAdminResource(
417:                                                        UNKNOWN_ERROR_KEY,
418:                                                        UNKNOWN_ERROR_KEY,
419:                                                        blog
420:                                                                .getBlogAdministrationLocale(),
421:                                                        new Object[] { e
422:                                                                .getMessage() }));
423:                                    }
424:
425:                                    String resourceURL = blog.getBlogBaseURL()
426:                                            + _resourcesDirectory
427:                                            + blog.getBlogId() + "/"
428:                                            + itemNameWithoutPath;
429:
430:                                    _logger
431:                                            .debug("Successfully uploaded resource file: "
432:                                                    + resourceFile.toString());
433:                                    addOperationResultMessage(
434:                                            context,
435:                                            formatAdminResource(
436:                                                    SUCCESSFUL_UPLOAD_KEY,
437:                                                    SUCCESSFUL_UPLOAD_KEY,
438:                                                    blog
439:                                                            .getBlogAdministrationLocale(),
440:                                                    new Object[] {
441:                                                            itemNameWithoutPath,
442:                                                            resourceURL,
443:                                                            itemNameWithoutPath }));
444:                                } else {
445:                                    if (!isAcceptedFileExtension) {
446:                                        _logger
447:                                                .error("Upload file does not have an accepted extension: "
448:                                                        + extension);
449:                                        addOperationResultMessage(
450:                                                context,
451:                                                formatAdminResource(
452:                                                        INVALID_EXTENSION_KEY,
453:                                                        INVALID_EXTENSION_KEY,
454:                                                        blog
455:                                                                .getBlogAdministrationLocale(),
456:                                                        new Object[] { extension }));
457:                                    } else {
458:                                        _logger
459:                                                .error("Upload file is not an accepted type: "
460:                                                        + itemNameWithoutPath
461:                                                        + " of type: "
462:                                                        + item.getContentType());
463:                                        addOperationResultMessage(
464:                                                context,
465:                                                formatAdminResource(
466:                                                        INVALID_TYPE_KEY,
467:                                                        INVALID_TYPE_KEY,
468:                                                        blog
469:                                                                .getBlogAdministrationLocale(),
470:                                                        new Object[] { item
471:                                                                .getContentType() }));
472:                                    }
473:                                }
474:                            }
475:                        }
476:                    } catch (FileUploadException e) {
477:                        _logger.error(e);
478:                        addOperationResultMessage(context, formatAdminResource(
479:                                UNKNOWN_ERROR_KEY, UNKNOWN_ERROR_KEY, blog
480:                                        .getBlogAdministrationLocale(),
481:                                new Object[] { e.getMessage() }));
482:                    }
483:
484:                    httpServletRequest.setAttribute(
485:                            BlojsomConstants.PAGE_PARAM, FILE_UPLOAD_PAGE);
486:                } else if (DELETE_UPLOAD_FILES.equals(action)) {
487:                    String[] filesToDelete = httpServletRequest
488:                            .getParameterValues(FILE_TO_DELETE);
489:                    int actualFilesDeleted = 0;
490:                    if (filesToDelete != null && filesToDelete.length > 0) {
491:                        File deletedFile;
492:                        for (int i = 0; i < filesToDelete.length; i++) {
493:                            String fileToDelete = filesToDelete[i];
494:                            deletedFile = new File(resourceDirectory,
495:                                    fileToDelete);
496:                            if (!deletedFile.delete()) {
497:                                _logger
498:                                        .debug("Unable to delete resource file: "
499:                                                + deletedFile.toString());
500:                            } else {
501:                                actualFilesDeleted += 1;
502:                            }
503:                        }
504:
505:                        addOperationResultMessage(context,
506:                                formatAdminResource(DELETED_FILES_KEY,
507:                                        DELETED_FILES_KEY, blog
508:                                                .getBlogAdministrationLocale(),
509:                                        new Object[] { new Integer(
510:                                                actualFilesDeleted) }));
511:                    }
512:
513:                    httpServletRequest.setAttribute(
514:                            BlojsomConstants.PAGE_PARAM, FILE_UPLOAD_PAGE);
515:                }
516:
517:                // Create a list of files in the user's resource directory
518:                Map resourceFilesMap = null;
519:                if (resourceDirectory.exists()) {
520:                    File[] resourceFiles = resourceDirectory.listFiles();
521:
522:                    if (resourceFiles != null) {
523:                        resourceFilesMap = new HashMap(resourceFiles.length);
524:                        for (int i = 0; i < resourceFiles.length; i++) {
525:                            File resourceFile = resourceFiles[i];
526:                            resourceFilesMap.put(resourceFile.getName(),
527:                                    resourceFile.getName());
528:                        }
529:                    }
530:                } else {
531:                    resourceFilesMap = new HashMap();
532:                }
533:
534:                resourceFilesMap = new TreeMap(resourceFilesMap);
535:                context.put(PLUGIN_ADMIN_FILE_UPLOAD_FILES, resourceFilesMap);
536:                context.put(ACCEPTED_FILE_TYPES,
537:                        new TreeMap(_acceptedFileTypes));
538:                context.put(INVALID_FILE_EXTENSIONS, new TreeMap(BlojsomUtils
539:                        .listToMap(BlojsomUtils
540:                                .arrayToList(_invalidFileExtensions))));
541:
542:                return entries;
543:            }
544:        }
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