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19 package org.eclipse.jetty.util;
20
21 import java.io.BufferedInputStream;
22 import java.io.BufferedOutputStream;
23 import java.io.BufferedReader;
24 import java.io.ByteArrayInputStream;
25 import java.io.File;
26 import java.io.FileInputStream;
27 import java.io.FileOutputStream;
28 import java.io.FilterInputStream;
29 import java.io.IOException;
30 import java.io.InputStream;
31 import java.io.InputStreamReader;
32 import java.io.OutputStream;
33 import java.util.ArrayList;
34 import java.util.Collection;
35 import java.util.Collections;
36 import java.util.List;
37 import java.util.Locale;
38
39 import javax.servlet.MultipartConfigElement;
40 import javax.servlet.ServletException;
41 import javax.servlet.http.Part;
42
43 import org.eclipse.jetty.util.log.Log;
44 import org.eclipse.jetty.util.log.Logger;
45
46
47
48
49
50
51
52
53 public class MultiPartInputStreamParser
54 {
55 private static final Logger LOG = Log.getLogger(MultiPartInputStreamParser.class);
56 public static final MultipartConfigElement __DEFAULT_MULTIPART_CONFIG = new MultipartConfigElement(System.getProperty("java.io.tmpdir"));
57 protected InputStream _in;
58 protected MultipartConfigElement _config;
59 protected String _contentType;
60 protected MultiMap _parts;
61 protected File _tmpDir;
62 protected File _contextTmpDir;
63 protected boolean _deleteOnExit;
64
65
66
67 public class MultiPart implements Part
68 {
69 protected String _name;
70 protected String _filename;
71 protected File _file;
72 protected OutputStream _out;
73 protected ByteArrayOutputStream2 _bout;
74 protected String _contentType;
75 protected MultiMap _headers;
76 protected long _size = 0;
77 protected boolean _temporary = true;
78
79 public MultiPart (String name, String filename)
80 throws IOException
81 {
82 _name = name;
83 _filename = filename;
84 }
85
86 protected void setContentType (String contentType)
87 {
88 _contentType = contentType;
89 }
90
91
92 protected void open()
93 throws IOException
94 {
95
96
97
98 if (_filename != null && _filename.trim().length() > 0)
99 {
100 createFile();
101 }
102 else
103 {
104
105
106 _out = _bout= new ByteArrayOutputStream2();
107 }
108 }
109
110 protected void close()
111 throws IOException
112 {
113 _out.close();
114 }
115
116
117 protected void write (int b)
118 throws IOException
119 {
120 if (MultiPartInputStreamParser.this._config.getMaxFileSize() > 0 && _size + 1 > MultiPartInputStreamParser.this._config.getMaxFileSize())
121 throw new IllegalStateException ("Multipart Mime part "+_name+" exceeds max filesize");
122
123 if (MultiPartInputStreamParser.this._config.getFileSizeThreshold() > 0 && _size + 1 > MultiPartInputStreamParser.this._config.getFileSizeThreshold() && _file==null)
124 createFile();
125 _out.write(b);
126 _size ++;
127 }
128
129 protected void write (byte[] bytes, int offset, int length)
130 throws IOException
131 {
132 if (MultiPartInputStreamParser.this._config.getMaxFileSize() > 0 && _size + length > MultiPartInputStreamParser.this._config.getMaxFileSize())
133 throw new IllegalStateException ("Multipart Mime part "+_name+" exceeds max filesize");
134
135 if (MultiPartInputStreamParser.this._config.getFileSizeThreshold() > 0 && _size + length > MultiPartInputStreamParser.this._config.getFileSizeThreshold() && _file==null)
136 createFile();
137
138 _out.write(bytes, offset, length);
139 _size += length;
140 }
141
142 protected void createFile ()
143 throws IOException
144 {
145 _file = File.createTempFile("MultiPart", "", MultiPartInputStreamParser.this._tmpDir);
146 if (_deleteOnExit)
147 _file.deleteOnExit();
148 FileOutputStream fos = new FileOutputStream(_file);
149 BufferedOutputStream bos = new BufferedOutputStream(fos);
150
151 if (_size > 0 && _out != null)
152 {
153
154 _out.flush();
155 _bout.writeTo(bos);
156 _out.close();
157 _bout = null;
158 }
159 _out = bos;
160 }
161
162
163
164 protected void setHeaders(MultiMap headers)
165 {
166 _headers = headers;
167 }
168
169
170
171
172 public String getContentType()
173 {
174 return _contentType;
175 }
176
177
178
179
180 public String getHeader(String name)
181 {
182 if (name == null)
183 return null;
184 return (String)_headers.getValue(name.toLowerCase(Locale.ENGLISH), 0);
185 }
186
187
188
189
190 public Collection<String> getHeaderNames()
191 {
192 return _headers.keySet();
193 }
194
195
196
197
198 public Collection<String> getHeaders(String name)
199 {
200 return _headers.getValues(name);
201 }
202
203
204
205
206 public InputStream getInputStream() throws IOException
207 {
208 if (_file != null)
209 {
210
211 return new BufferedInputStream (new FileInputStream(_file));
212 }
213 else
214 {
215
216 return new ByteArrayInputStream(_bout.getBuf(),0,_bout.size());
217 }
218 }
219
220 public byte[] getBytes()
221 {
222 if (_bout!=null)
223 return _bout.toByteArray();
224 return null;
225 }
226
227
228
229
230 public String getName()
231 {
232 return _name;
233 }
234
235
236
237
238 public long getSize()
239 {
240 return _size;
241 }
242
243
244
245
246 public void write(String fileName) throws IOException
247 {
248 if (_file == null)
249 {
250 _temporary = false;
251
252
253 _file = new File (_tmpDir, fileName);
254
255 BufferedOutputStream bos = null;
256 try
257 {
258 bos = new BufferedOutputStream(new FileOutputStream(_file));
259 _bout.writeTo(bos);
260 bos.flush();
261 }
262 finally
263 {
264 if (bos != null)
265 bos.close();
266 _bout = null;
267 }
268 }
269 else
270 {
271
272 _temporary = false;
273
274 File f = new File(_tmpDir, fileName);
275 if (_file.renameTo(f))
276 _file = f;
277 }
278 }
279
280
281
282
283
284
285 public void delete() throws IOException
286 {
287 if (_file != null && _file.exists())
288 _file.delete();
289 }
290
291
292
293
294
295
296 public void cleanUp() throws IOException
297 {
298 if (_temporary && _file != null && _file.exists())
299 _file.delete();
300 }
301
302
303
304
305
306
307 public File getFile ()
308 {
309 return _file;
310 }
311
312
313
314
315
316
317 public String getContentDispositionFilename ()
318 {
319 return _filename;
320 }
321 }
322
323
324
325
326
327
328
329
330
331
332 public MultiPartInputStreamParser (InputStream in, String contentType, MultipartConfigElement config, File contextTmpDir)
333 {
334 _in = new ReadLineInputStream(in);
335 _contentType = contentType;
336 _config = config;
337 _contextTmpDir = contextTmpDir;
338 if (_contextTmpDir == null)
339 _contextTmpDir = new File (System.getProperty("java.io.tmpdir"));
340
341 if (_config == null)
342 _config = new MultipartConfigElement(_contextTmpDir.getAbsolutePath());
343 }
344
345
346
347
348
349
350 public Collection<Part> getParsedParts()
351 {
352 if (_parts == null)
353 return Collections.emptyList();
354
355 Collection<Object> values = _parts.values();
356 List<Part> parts = new ArrayList<Part>();
357 for (Object o: values)
358 {
359 List<Part> asList = LazyList.getList(o, false);
360 parts.addAll(asList);
361 }
362 return parts;
363 }
364
365
366
367
368
369
370 public void deleteParts ()
371 throws MultiException
372 {
373 Collection<Part> parts = getParsedParts();
374 MultiException err = new MultiException();
375 for (Part p:parts)
376 {
377 try
378 {
379 ((MultiPartInputStreamParser.MultiPart)p).cleanUp();
380 }
381 catch(Exception e)
382 {
383 err.add(e);
384 }
385 }
386 _parts.clear();
387
388 err.ifExceptionThrowMulti();
389 }
390
391
392
393
394
395
396
397
398
399 public Collection<Part> getParts()
400 throws IOException, ServletException
401 {
402 parse();
403 Collection<Object> values = _parts.values();
404 List<Part> parts = new ArrayList<Part>();
405 for (Object o: values)
406 {
407 List<Part> asList = LazyList.getList(o, false);
408 parts.addAll(asList);
409 }
410 return parts;
411 }
412
413
414
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416
417
418
419
420
421
422 public Part getPart(String name)
423 throws IOException, ServletException
424 {
425 parse();
426 return (Part)_parts.getValue(name, 0);
427 }
428
429
430
431
432
433
434
435
436 protected void parse ()
437 throws IOException, ServletException
438 {
439
440 if (_parts != null)
441 return;
442
443
444 long total = 0;
445 _parts = new MultiMap();
446
447
448 if (_contentType == null || !_contentType.startsWith("multipart/form-data"))
449 return;
450
451
452
453 if (_config.getLocation() == null)
454 _tmpDir = _contextTmpDir;
455 else if ("".equals(_config.getLocation()))
456 _tmpDir = _contextTmpDir;
457 else
458 {
459 File f = new File (_config.getLocation());
460 if (f.isAbsolute())
461 _tmpDir = f;
462 else
463 _tmpDir = new File (_contextTmpDir, _config.getLocation());
464 }
465
466 if (!_tmpDir.exists())
467 _tmpDir.mkdirs();
468
469 String contentTypeBoundary = "";
470 if (_contentType.indexOf("boundary=") >= 0)
471 contentTypeBoundary = QuotedStringTokenizer.unquote(value(_contentType.substring(_contentType.indexOf("boundary="))).trim());
472
473 String boundary="--"+contentTypeBoundary;
474 byte[] byteBoundary=(boundary+"--").getBytes(StringUtil.__ISO_8859_1);
475
476
477 String line=((ReadLineInputStream)_in).readLine();
478
479 if (line == null)
480 throw new IOException("Missing content for multipart request");
481
482 boolean badFormatLogged = false;
483 line=line.trim();
484 while (line != null && !line.equals(boundary))
485 {
486 if (!badFormatLogged)
487 {
488 LOG.warn("Badly formatted multipart request");
489 badFormatLogged = true;
490 }
491 line=((ReadLineInputStream)_in).readLine();
492 line=(line==null?line:line.trim());
493 }
494
495 if (line == null)
496 throw new IOException("Missing initial multi part boundary");
497
498
499 boolean lastPart=false;
500 String contentDisposition=null;
501 String contentType=null;
502 String contentTransferEncoding=null;
503 outer:while(!lastPart)
504 {
505 MultiMap headers = new MultiMap();
506 while(true)
507 {
508 line=((ReadLineInputStream)_in).readLine();
509
510
511 if(line==null)
512 break outer;
513
514
515 if("".equals(line))
516 break;
517
518 total += line.length();
519 if (_config.getMaxRequestSize() > 0 && total > _config.getMaxRequestSize())
520 throw new IllegalStateException ("Request exceeds maxRequestSize ("+_config.getMaxRequestSize()+")");
521
522
523 int c=line.indexOf(':',0);
524 if(c>0)
525 {
526 String key=line.substring(0,c).trim().toLowerCase(Locale.ENGLISH);
527 String value=line.substring(c+1,line.length()).trim();
528 headers.put(key, value);
529 if (key.equalsIgnoreCase("content-disposition"))
530 contentDisposition=value;
531 if (key.equalsIgnoreCase("content-type"))
532 contentType = value;
533 if(key.equals("content-transfer-encoding"))
534 contentTransferEncoding=value;
535 }
536 }
537
538
539 boolean form_data=false;
540 if(contentDisposition==null)
541 {
542 throw new IOException("Missing content-disposition");
543 }
544
545 QuotedStringTokenizer tok=new QuotedStringTokenizer(contentDisposition,";", false, true);
546 String name=null;
547 String filename=null;
548 while(tok.hasMoreTokens())
549 {
550 String t=tok.nextToken().trim();
551 String tl=t.toLowerCase(Locale.ENGLISH);
552 if(t.startsWith("form-data"))
553 form_data=true;
554 else if(tl.startsWith("name="))
555 name=value(t);
556 else if(tl.startsWith("filename="))
557 filename=filenameValue(t);
558 }
559
560
561 if(!form_data)
562 {
563 continue;
564 }
565
566
567
568
569
570 if(name==null)
571 {
572 continue;
573 }
574
575 if ("base64".equalsIgnoreCase(contentTransferEncoding))
576 {
577 _in = new Base64InputStream(_in);
578 }
579 else if ("quoted-printable".equalsIgnoreCase(contentTransferEncoding))
580 {
581 _in = new FilterInputStream(_in)
582 {
583 @Override
584 public int read() throws IOException
585 {
586 int c = in.read();
587 if (c >= 0 && c == '=')
588 {
589 int hi = in.read();
590 int lo = in.read();
591 if (hi < 0 || lo < 0)
592 {
593 throw new IOException("Unexpected end to quoted-printable byte");
594 }
595 char[] chars = new char[] { (char)hi, (char)lo };
596 c = Integer.parseInt(new String(chars),16);
597 }
598 return c;
599 }
600 };
601 }
602
603
604
605
606 MultiPart part = new MultiPart(name, filename);
607 part.setHeaders(headers);
608 part.setContentType(contentType);
609 _parts.add(name, part);
610
611 part.open();
612
613 try
614 {
615 int state=-2;
616 int c;
617 boolean cr=false;
618 boolean lf=false;
619
620
621 while(true)
622 {
623 int b=0;
624 while((c=(state!=-2)?state:_in.read())!=-1)
625 {
626 total ++;
627 if (_config.getMaxRequestSize() > 0 && total > _config.getMaxRequestSize())
628 throw new IllegalStateException("Request exceeds maxRequestSize ("+_config.getMaxRequestSize()+")");
629
630 state=-2;
631
632 if(c==13||c==10)
633 {
634 if(c==13)
635 {
636 _in.mark(1);
637 int tmp=_in.read();
638 if (tmp!=10)
639 _in.reset();
640 else
641 state=tmp;
642 }
643 break;
644 }
645
646 if(b>=0&&b<byteBoundary.length&&c==byteBoundary[b])
647 b++;
648 else
649 {
650
651 if(cr)
652 part.write(13);
653
654 if(lf)
655 part.write(10);
656
657 cr=lf=false;
658 if(b>0)
659 part.write(byteBoundary,0,b);
660
661 b=-1;
662 part.write(c);
663 }
664 }
665
666 if((b>0&&b<byteBoundary.length-2)||(b==byteBoundary.length-1))
667 {
668 if(cr)
669 part.write(13);
670
671 if(lf)
672 part.write(10);
673
674 cr=lf=false;
675 part.write(byteBoundary,0,b);
676 b=-1;
677 }
678
679 if(b>0||c==-1)
680 {
681 if(b==byteBoundary.length)
682 lastPart=true;
683 if(state==10)
684 state=-2;
685 break;
686 }
687
688 if(cr)
689 part.write(13);
690
691 if(lf)
692 part.write(10);
693
694 cr=(c==13);
695 lf=(c==10||state==10);
696 if(state==10)
697 state=-2;
698 }
699 }
700 finally
701 {
702
703 part.close();
704 }
705 }
706 if (!lastPart)
707 throw new IOException("Incomplete parts");
708 }
709
710 public void setDeleteOnExit(boolean deleteOnExit)
711 {
712 _deleteOnExit = deleteOnExit;
713 }
714
715
716 public boolean isDeleteOnExit()
717 {
718 return _deleteOnExit;
719 }
720
721
722
723 private String value(String nameEqualsValue)
724 {
725 int idx = nameEqualsValue.indexOf('=');
726 String value = nameEqualsValue.substring(idx+1).trim();
727 return QuotedStringTokenizer.unquoteOnly(value);
728 }
729
730
731
732 private String filenameValue(String nameEqualsValue)
733 {
734 int idx = nameEqualsValue.indexOf('=');
735 String value = nameEqualsValue.substring(idx+1).trim();
736
737 if (value.matches(".??[a-z,A-Z]\\:\\\\[^\\\\].*"))
738 {
739
740
741 char first=value.charAt(0);
742 if (first=='"' || first=='\'')
743 value=value.substring(1);
744 char last=value.charAt(value.length()-1);
745 if (last=='"' || last=='\'')
746 value = value.substring(0,value.length()-1);
747
748 return value;
749 }
750 else
751
752
753
754
755 return QuotedStringTokenizer.unquoteOnly(value, true);
756 }
757
758
759
760 private static class Base64InputStream extends InputStream
761 {
762 BufferedReader _in;
763 String _line;
764 byte[] _buffer;
765 int _pos;
766
767 public Base64InputStream (InputStream in)
768 {
769 _in = new BufferedReader(new InputStreamReader(in));
770 }
771
772 @Override
773 public int read() throws IOException
774 {
775 if (_buffer==null || _pos>= _buffer.length)
776 {
777 _line = _in.readLine();
778 if (_line==null)
779 return -1;
780 if (_line.startsWith("--"))
781 _buffer=(_line+"\r\n").getBytes();
782 else if (_line.length()==0)
783 _buffer="\r\n".getBytes();
784 else
785 _buffer=B64Code.decode(_line);
786
787 _pos=0;
788 }
789 return _buffer[_pos++];
790 }
791 }
792 }