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comparison src/nabble/model/FileUpload.java @ 0:7ecd1a4ef557

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add content
author Franklin Schmidt <fschmidt@gmail.com>
date Thu, 21 Mar 2019 19:15:52 -0600
parents
children b74139388033
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-1:000000000000 0:7ecd1a4ef557
1 package nabble.model;
2
3 import fschmidt.db.DbDatabase;
4 import fschmidt.db.Listener;
5 import fschmidt.html.HtmlTag;
6 import fschmidt.util.java.ImageUtils;
7 import nabble.view.web.forum.FileDownload;
8 import org.apache.commons.fileupload.FileItem;
9 import org.apache.commons.fileupload.FileItemHeaders;
10 import org.slf4j.Logger;
11 import org.slf4j.LoggerFactory;
12
13 import javax.imageio.ImageIO;
14 import java.awt.image.BufferedImage;
15 import java.awt.image.ImagingOpException;
16 import java.io.ByteArrayInputStream;
17 import java.io.ByteArrayOutputStream;
18 import java.io.FilterInputStream;
19 import java.io.IOException;
20 import java.io.InputStream;
21 import java.net.URL;
22 import java.sql.Connection;
23 import java.sql.PreparedStatement;
24 import java.sql.ResultSet;
25 import java.sql.SQLException;
26 import java.sql.Statement;
27 import java.util.ArrayList;
28 import java.util.Date;
29 import java.util.HashMap;
30 import java.util.HashSet;
31 import java.util.Iterator;
32 import java.util.List;
33 import java.util.Map;
34 import java.util.Set;
35
36
37 public final class FileUpload {
38 private static final Logger logger = LoggerFactory.getLogger(FileUpload.class);
39
40 public static final int MAX_IMAGE_SIZE = 1048576;
41 public static final int MAX_FILE_SIZE = 5242880;
42
43 public static class FileDetails {
44 private String name;
45 private Date date;
46
47 public FileDetails(String name, Date date) {
48 this.name = name;
49 this.date = date;
50 }
51
52 public String getName() { return name; }
53 public Date getDate() { return date; }
54 }
55
56 private static void addToSql(Message.Source src,StringBuilder sql) {
57 Message.SourceType type = src.getMessageSourceType();
58 sql.append( " from file_" ).append( type.getName() );
59 String idField = type.getIdField();
60 if( idField == null ) {
61 sql.append( " where true" );
62 } else {
63 sql.append( " where " ).append( idField ).append( " = ?" );
64 }
65 }
66
67 private static int setParams(Message.Source src,PreparedStatement pstmt)
68 throws SQLException
69 {
70 int i = 0;
71 if( src.getMessageSourceType().getIdField() != null ) {
72 pstmt.setLong(++i,src.getSourceId());
73 }
74 return i;
75 }
76
77 public static InputStream getFileContent(Message.Source src,String name) {
78 if( src==null )
79 return null;
80 Message.SourceType type = src.getMessageSourceType();
81 try {
82 final Connection con = src.getSite().getDb().getConnection();
83 StringBuilder sql = new StringBuilder();
84 sql.append( "select content" );
85 addToSql(src,sql);
86 sql.append( " and name = ?" );
87 final PreparedStatement pstmt = con.prepareStatement(sql.toString());
88 boolean isDone = false;
89 try {
90 int i = setParams(src,pstmt);
91 pstmt.setString(++i,name);
92 ResultSet rs = pstmt.executeQuery();
93 if( !rs.next() )
94 return null;
95 InputStream rtn = new FilterInputStream(rs.getBinaryStream("content")) {
96 public void close() throws IOException {
97 super.close();
98 try {
99 pstmt.close();
100 con.close();
101 } catch(SQLException e) {
102 throw new RuntimeException(e);
103 }
104 }
105 };
106 isDone = true;
107 return rtn;
108 } finally {
109 if( !isDone ) {
110 pstmt.close();
111 con.close();
112 }
113 }
114 } catch(SQLException e) {
115 throw new RuntimeException(e);
116 }
117 }
118
119 static boolean hasFile(Message.Source src,String name) {
120 Message.SourceType type = src.getMessageSourceType();
121 try {
122 final Connection con = src.getSite().getDb().getConnection();
123 StringBuilder sql = new StringBuilder();
124 sql.append( "select 'whatever'" );
125 addToSql(src,sql);
126 sql.append( " and name = ?" );
127 final PreparedStatement pstmt = con.prepareStatement(sql.toString());
128 try {
129 int i = setParams(src,pstmt);
130 pstmt.setString(++i,name);
131 return pstmt.executeQuery().next();
132 } finally {
133 pstmt.close();
134 con.close();
135 }
136 } catch(SQLException e) {
137 throw new RuntimeException(e);
138 }
139 }
140
141 public static FileDetails[] getFileDetails(Message.Source src,String prefix) {
142 Message.SourceType type = src.getMessageSourceType();
143 try {
144 final Connection con = src.getSite().getDb().getConnection();
145 StringBuilder sql = new StringBuilder();
146 sql.append( "select name, date_" );
147 addToSql(src,sql);
148 if( prefix != null )
149 sql.append( " and name like '" ).append( prefix ).append( "%'" );
150 sql.append( " order by name" );
151 final PreparedStatement pstmt = con.prepareStatement(sql.toString());
152 try {
153 setParams(src,pstmt);
154 List<FileDetails> names = new ArrayList<FileDetails>();
155 ResultSet set = pstmt.executeQuery();
156 while (set.next()) {
157 names.add(new FileDetails(set.getString("name"), set.getDate("date_")));
158 }
159 return names.toArray(new FileDetails[0]);
160 } finally {
161 pstmt.close();
162 con.close();
163 }
164 } catch(SQLException e) {
165 throw new RuntimeException(e);
166 }
167 }
168
169 public static String getName(FileItem fi) {
170 String[] a = fi.getName().split("[\\\\/:]");
171 String[] b = a[a.length-1].split("\\.");
172 String ext2 = b[b.length-1];
173 int n = (int)(Math.random()*1000);
174 if(b[0].equals("image"))
175 b[0] = b[0]+n;
176 return b[0]+"."+ext2;
177 }
178
179 public static String uploadImage(final FileItem fi,Message.Source src, int resize)
180 throws ModelException
181 {
182 try {
183 return uploadImage1(fi,src,resize);
184 } catch(IOException e) {
185 throw ModelException.newInstance("upload_image_failed",e);
186 }
187 }
188
189 private static String uploadImage1(final FileItem fi,Message.Source src, int resize)
190 throws ModelException, IOException
191 {
192 InputStream in = fi.getInputStream();
193 BufferedImage bi;
194 try {
195 bi = ImageIO.read(in);
196 } catch(IllegalArgumentException e) {
197 throw ModelException.newInstance("upload_image_failed",e);
198 } catch (RuntimeException e) {
199 throw ModelException.newInstance("unknown_image_error",e);
200 }
201 in.close();
202 if (bi == null)
203 throw ModelException.newInstance("unsupported_image_type","Unsupported image type - please use PNG, JPG or GIF.");
204
205 String filename = getName(fi);
206 filename = filename.replaceAll("[ ']+","_"); // Replace spaces and single quotes with underscores
207 int iDot = filename.lastIndexOf('.');
208 if( iDot == -1 )
209 throw ModelException.newInstance("file_has_no_ending","File must have ending");
210 String ending = filename.substring(iDot+1).toLowerCase();
211 InputStream bais;
212 long size;
213 if (resize > 0) {
214 try {
215 bi = ImageUtils.getThumbnail(bi, resize, resize);
216 final byte[] contents = ImageUtils.asOutputStream(bi, ending).toByteArray();
217 bi = null;
218 size = contents.length;
219 bais = new ByteArrayInputStream(contents);
220 } catch (ImagingOpException e) {
221 throw ModelException.newInstance("unable_to_resize_image","Unable to resize image", e);
222 }
223 } else {
224 bi = null;
225 bais = fi.getInputStream();
226 size = fi.getSize();
227 }
228 final InputStream inputStream = bais;
229 if (size <= MAX_IMAGE_SIZE) {
230 filename = filename.substring(0,iDot+1) + ending;
231 return uploadFile2(size,filename,src, true,
232 new InputStreamFactory() {
233 public InputStream in() throws IOException {
234 return inputStream;
235 }
236 }
237 );
238 } else {
239 throw ModelException.newInstance("image_too_large","Image is too large: use the resize option to make it smaller. Maximum size 1MB.");
240 }
241 }
242
243 /*
244 static boolean isDifferent(final FileItem fi,Message.Source src)
245 throws ModelException
246 {
247 try {
248 InputStream inDb = getFileContent(src,fi.getName());
249 if( inDb==null )
250 return true;
251 InputStream inFi = null;
252 try {
253 inFi = fi.getInputStream();
254 return IoUtils.compare(inDb,inFi) != 0;
255 } finally {
256 if (inFi != null)
257 inFi.close();
258 inDb.close();
259 }
260 } catch(IOException e) {
261 throw ModelException.newInstance("file_io_exception",e);
262 }
263 }
264 */
265
266 public static String uploadFile(final FileItem fi,Message.Source src)
267 throws ModelException
268 {
269 try {
270 return uploadFile1(fi,src);
271 } catch(IOException e) {
272 throw ModelException.newInstance("file_io_exception",e);
273 }
274 }
275
276 private static String uploadFile1(final FileItem fi,Message.Source src)
277 throws ModelException, IOException
278 {
279 String filename = getName(fi);
280 filename = filename.replaceAll("[ ']+", "_"); // Replace spaces and single quotes with underscores
281 long size = fi.getSize();
282 return uploadFile2(size,filename,src, true,
283 new InputStreamFactory() {
284 public InputStream in() throws IOException {
285 return fi.getInputStream();
286 }
287 }
288 );
289 }
290
291 private static interface InputStreamFactory {
292 public InputStream in() throws IOException;
293 }
294
295 private static String uploadFile2(long size, String filename, final Message.Source src, boolean checkSize, InputStreamFactory inf)
296 throws ModelException, IOException
297 {
298 if( "".equals(filename.trim()) )
299 throw ModelException.newInstance("empty_filename","empty filename");
300 if( size==0 )
301 throw ModelException.newInstance("empty_file","empty file");
302 if( size > MAX_FILE_SIZE && checkSize )
303 throw ModelException.newInstance("file_is_too_large","file is too large - maximum size 5mb");
304 synchronized(src) {
305 try {
306 Connection con = src.getSite().getDb().getConnection();
307 try {
308 {
309 StringBuilder sql = new StringBuilder();
310 sql.append( "delete" );
311 addToSql(src,sql);
312 sql.append( " and name = ?" );
313 PreparedStatement pstmt = con.prepareStatement(sql.toString());
314 int i = setParams(src,pstmt);
315 pstmt.setString(++i,filename);
316 pstmt.executeUpdate();
317 pstmt.close();
318 }
319 {
320 StringBuilder sql = new StringBuilder();
321 Message.SourceType type = src.getMessageSourceType();
322 sql.append( "insert into file_" ).append( type.getName() );
323 sql.append( " ( name, content" );
324 String idField = type.getIdField();
325 if( idField != null )
326 sql.append( ", " ).append( idField );
327 sql.append( " ) values (?,?" );
328 if( idField != null )
329 sql.append( ",?" );
330 sql.append( ")" );
331 PreparedStatement pstmt = con.prepareStatement(sql.toString());
332 pstmt.setString(1,filename);
333 InputStream in = inf.in();
334 pstmt.setBinaryStream(2,in,(int)size);
335 if( idField != null )
336 pstmt.setLong(3,src.getSourceId());
337 pstmt.executeUpdate();
338 in.close();
339 pstmt.close();
340 }
341 return filename;
342 } finally {
343 con.close();
344 src.getSite().getDb().runAfterCommit(new Runnable(){public void run(){
345 fireFileUpdateListeners(src);
346 }});
347 }
348 } catch(SQLException e) {
349 throw new RuntimeException(e);
350 }
351 }
352 }
353
354
355 private static List<Listener<Message.Source>> fileUpdateListeners = new ArrayList<Listener<Message.Source>>();
356
357 public static void addFileUpdateListener(Listener<Message.Source> listener) {
358 fileUpdateListeners.add(listener);
359 }
360
361 static void fireFileUpdateListeners(Message.Source src) {
362 for( Listener<Message.Source> listener : fileUpdateListeners ) {
363 listener.event(src);
364 }
365 }
366
367
368 static {
369 NodeImpl.addPostInsertListener(new Listener<NodeImpl>(){
370 public void event(NodeImpl node) {
371 Message.Format fmt = node.getMessage().getFormat();
372 if( !(fmt instanceof MailMessageFormat) && node.getOwner() instanceof User)
373 fixFileTags(node.getMessage(),(User)node.getOwner());
374 }
375 });
376 NodeImpl.addPostUpdateListener(new Listener<NodeImpl>(){
377 public void event(NodeImpl node) {
378 if( ModelHome.insideImportProcedure.get() )
379 return;
380 Message.Format fmt = node.getMessage().getFormat();
381 if( !(fmt instanceof MailMessageFormat) )
382 deleteUnusedFiles(node.getMessage());
383 }
384 });
385 }
386
387 private static void deleteUnusedFiles(Message message) {
388 Message.Source src = message.getSource();
389 if (src == null)
390 return;
391 DbDatabase db = src.getSite().getDb();
392 Message.SourceType type = src.getMessageSourceType();
393 Set<String> names = getFileInfo(message.parse(),src).keySet();
394 StringBuilder sql = new StringBuilder();
395 sql.append( "delete" );
396 addToSql(src,sql);
397 if( !names.isEmpty() ) {
398 sql.append( " and name not in (" );
399 Iterator<String> iter = names.iterator();
400 sql.append( db.arcana().quote(iter.next()) );
401 while( iter.hasNext() ) {
402 sql.append( ',' );
403 sql.append( db.arcana().quote(iter.next()) );
404 }
405 sql.append( ")" );
406 }
407 try {
408 Connection con = db.getConnection();
409 PreparedStatement pstmt = con.prepareStatement(sql.toString());
410 setParams(src,pstmt);
411 pstmt.executeUpdate();
412 pstmt.close();
413 con.close();
414 } catch(SQLException e) {
415 throw new RuntimeException(e);
416 }
417 }
418
419 public static void deleteFile(String fileName, Message.Source src) {
420 Message.SourceType type = src.getMessageSourceType();
421 try {
422 Connection con = src.getSite().getDb().getConnection();
423 try {
424 StringBuilder sql = new StringBuilder();
425 sql.append( "delete" );
426 addToSql(src,sql);
427 sql.append( " and name = ?" );
428 PreparedStatement pstmt = con.prepareStatement(sql.toString());
429 int i = setParams(src,pstmt);
430 pstmt.setString(++i,fileName);
431 pstmt.executeUpdate();
432 pstmt.close();
433 } finally {
434 con.close();
435 }
436 } catch(SQLException e) {
437 throw new RuntimeException(e);
438 }
439 }
440
441 private static void fixFileTags(Message message,User user) {
442 for( Object obj : message.parse() ) {
443 if( !(obj instanceof HtmlTag) )
444 continue;
445 HtmlTag tag = (HtmlTag)obj;
446 String tagName = tag.getName().toLowerCase();
447 if( tagName.equals("nabble_a") ) {
448 fix(tag,"href",message.getSource(),user);
449 } else if( tagName.equals("nabble_img") ) {
450 fix(tag,"src",message.getSource(),user);
451 }
452 }
453 }
454
455 public static void checkFileTags(Message message,Person visitor) throws ModelException {
456 Set<String> fileNames = new HashSet<String>();
457 if( visitor instanceof User ) {
458 User user = (User)visitor;
459 Message.Source srcTemp = Message.SourceType.getType('t').getSource(user.getSite(),user.getId());
460 FileDetails[] fileDetails = getFileDetails(srcTemp, null);
461 for (FileDetails d : fileDetails) {
462 fileNames.add(d.name);
463 }
464 }
465 for( Object obj : message.parse() ) {
466 if( !(obj instanceof HtmlTag) )
467 continue;
468 HtmlTag tag = (HtmlTag)obj;
469 String tagName = tag.getName().toLowerCase();
470 if( tagName.equals("nabble_a") ) {
471 String href = HtmlTag.unquote(tag.getAttributeValue("href"));
472 if (!fileNames.contains(href))
473 throw new ModelException.InvalidFile(href);
474 } else if( tagName.equals("nabble_img") ) {
475 String src = HtmlTag.unquote(tag.getAttributeValue("src"));
476 if (!fileNames.contains(src))
477 throw new ModelException.InvalidFile(src);
478 }
479 }
480 }
481
482 private static void fix(HtmlTag tag,String fileAttr,Message.Source src,User user)
483 {
484 String filename = HtmlTag.unquote(tag.getAttributeValue(fileAttr));
485 if( filename==null )
486 return;
487 Message.SourceType type = src.getMessageSourceType();
488 try {
489 Connection con = src.getSite().getDb().getConnection();
490 try {
491 {
492 PreparedStatement pstmt = con.prepareStatement(
493 "select 'x' from file_temp"
494 +" where user_id = ?"
495 +" and name = ?"
496 );
497 pstmt.setLong(1,user.getId());
498 pstmt.setString(2,filename);
499 ResultSet rs = pstmt.executeQuery();
500 try {
501 if( !rs.next() )
502 return;
503 } finally {
504 rs.close();
505 pstmt.close();
506 }
507 }
508 {
509 StringBuilder sql = new StringBuilder();
510 sql.append( "delete" );
511 addToSql(src,sql);
512 sql.append( " and name = ?" );
513 PreparedStatement pstmt = con.prepareStatement(sql.toString());
514 int i = setParams(src,pstmt);
515 pstmt.setString(++i,filename);
516 pstmt.executeUpdate();
517 pstmt.close();
518 }
519 PreparedStatement pstmt = con.prepareStatement(
520 "insert into file_" + type.getName()
521 +" (" + type.getIdField() + ", name, content)"
522 +" select ?, name, content"
523 +" from file_temp"
524 +" where user_id = ?"
525 +" and name=?"
526 );
527 pstmt.setLong(1,src.getSourceId());
528 pstmt.setLong(2,user.getId());
529 pstmt.setString(3,filename);
530 pstmt.executeUpdate();
531 pstmt.close();
532 {
533 Statement stmt = con.createStatement();
534 stmt.executeUpdate(
535 "delete from file_temp"
536 +" where date_ < " + Db.arcana.dateSub("now()",1,"day")
537 );
538 stmt.close();
539 }
540 } finally {
541 con.close();
542 }
543 } catch(SQLException e) {
544 throw new RuntimeException(e);
545 }
546 }
547
548 public static void processFileTags(List<Object> list,Message.Source src) {
549 if( src == null )
550 return;
551 for( Object obj : list ) {
552 if( !(obj instanceof HtmlTag) )
553 continue;
554 HtmlTag tag = (HtmlTag)obj;
555 String tagName = tag.getName().toLowerCase();
556 if( tagName.equals("nabble_a") ) {
557 String filename = HtmlTag.unquote(tag.getAttributeValue("href"));
558 if( filename==null )
559 continue;
560 String url = getUrl(filename,src);
561 tag.setAttribute("href",HtmlTag.quote(url));
562 tag.setName("a");
563 if( tag.getAttributeValue("target") == null ) {
564 tag.setAttribute("target","\"_top\"");
565 }
566 } else if( tagName.equals("/nabble_a") ) {
567 tag.setName("/a");
568 } else if( tagName.equals("nabble_img") ) {
569 String filename = HtmlTag.unquote(tag.getAttributeValue("src"));
570 if( filename==null )
571 continue;
572 String url = getUrl(filename,src);
573 tag.setAttribute("src",HtmlTag.quote(url));
574 tag.setName("img");
575 }
576 }
577 }
578
579 static Map<String,String> getFileInfo(List<Object> list,Message.Source src) {
580 Map<String,String> info = new HashMap<String,String>();
581 for( Object obj : list ) {
582 if( !(obj instanceof HtmlTag) )
583 continue;
584 HtmlTag tag = (HtmlTag)obj;
585 String tagName = tag.getName().toLowerCase();
586 if( tagName.equals("nabble_a") ) {
587 String filename = HtmlTag.unquote(tag.getAttributeValue("href"));
588 if( filename==null )
589 continue;
590 String url = getUrl(filename,src);
591 info.put(filename,url);
592 } else if( tagName.equals("nabble_img") ) {
593 String filename = HtmlTag.unquote(tag.getAttributeValue("src"));
594 if( filename==null )
595 continue;
596 String url = getUrl(filename,src);
597 info.put(filename,url);
598 }
599 }
600 return info;
601 }
602
603 static String getUrl(String filename,Message.Source src) {
604 return FileDownload.url(filename,src);
605 }
606
607 public static void saveImage(BufferedImage image, String fileName, Message.Source src)
608 throws ModelException
609 {
610 try {
611 // First convert to byte array
612 ByteArrayOutputStream baos = new ByteArrayOutputStream();
613 ImageIO.write(image, "png", baos);
614 final byte[] bytes = baos.toByteArray();
615
616 InputStreamFactory factory = new InputStreamFactory() {
617 public InputStream in() throws IOException {
618 return new ByteArrayInputStream(bytes);
619 }
620 };
621 uploadFile2(bytes.length, fileName, src, true, factory);
622 } catch(IOException e) {
623 throw ModelException.newInstance("file_io_exception",e);
624 }
625 }
626
627 public static void saveFile(final byte[] contents, String fileName, Message.Source src)
628 throws ModelException
629 {
630 saveFile(contents, fileName, src, true);
631 }
632
633 public static void saveFile(final byte[] contents, String fileName, Message.Source src, boolean checkSize)
634 throws ModelException
635 {
636 try {
637 InputStreamFactory factory = new InputStreamFactory() {
638 public InputStream in() throws IOException {
639 return new ByteArrayInputStream(contents);
640 }
641 };
642 uploadFile2(contents.length, fileName, src, checkSize, factory);
643 } catch(IOException e) {
644 throw ModelException.newInstance("file_io_exception",e);
645 }
646 }
647
648
649 public static FileDetails[] getFiles(Message.Source src) {
650 return getFileDetails(src, null);
651 }
652
653 public static final class UrlFileItem implements FileItem {
654 private final URL url;
655
656 public UrlFileItem(URL url) {
657 this.url = url;
658 }
659
660 public InputStream getInputStream()
661 throws IOException
662 {
663 try {
664 return url.openConnection().getInputStream();
665 } catch(IllegalArgumentException e) {
666 logger.warn("",e);
667 throw new IOException(e.getMessage());
668 } catch(RuntimeException e) {
669 logger.error("url = "+url,e);
670 throw e;
671 }
672 }
673
674 public String getContentType() {
675 throw new UnsupportedOperationException();
676 }
677
678 public String getName() {
679 String s = url.getPath();
680 int i = s.lastIndexOf('/');
681 if( i != -1 )
682 s = s.substring(i+1);
683 return s;
684 }
685
686 public boolean isInMemory() {
687 return false;
688 }
689
690 public long getSize() {
691 try {
692 long len = url.openConnection().getContentLength();
693 if( len == -1 ) {
694 len = 0;
695 InputStream in = getInputStream();
696 while(true) {
697 long n = in.skip(1000000L);
698 len += n;
699 if( n==0 ) {
700 if( in.read() == -1 )
701 break;
702 len++;
703 }
704 }
705 in.close();
706 }
707 return len;
708 } catch(IOException e) {
709 throw new RuntimeException(e);
710 }
711 }
712
713 public byte[] get() {
714 throw new UnsupportedOperationException();
715 }
716
717 public java.lang.String getString(java.lang.String encoding)
718 throws java.io.UnsupportedEncodingException
719 {
720 throw new UnsupportedOperationException();
721 }
722
723 public java.lang.String getString() {
724 throw new UnsupportedOperationException();
725 }
726
727 public void write(java.io.File file)
728 throws java.lang.Exception
729 {
730 throw new UnsupportedOperationException();
731 }
732
733 public void delete() {
734 throw new UnsupportedOperationException();
735 }
736
737 public java.lang.String getFieldName() {
738 throw new UnsupportedOperationException();
739 }
740
741 public void setFieldName(java.lang.String name) {
742 throw new UnsupportedOperationException();
743 }
744
745 public boolean isFormField() {
746 return false;
747 }
748
749 public void setFormField(boolean state) {
750 throw new UnsupportedOperationException();
751 }
752
753 public java.io.OutputStream getOutputStream()
754 throws java.io.IOException
755 {
756 throw new UnsupportedOperationException();
757 }
758
759 public FileItemHeaders getHeaders() {
760 throw new UnsupportedOperationException();
761 }
762
763 public void setHeaders(FileItemHeaders fileItemHeaders) {
764 throw new UnsupportedOperationException();
765 }
766
767 public String toString() {
768 return "UrlFileItem-"+url;
769 }
770 }
771
772
773
774 static void nop() {}
775
776 private FileUpload() {} // never
777 }