Source Code Cross Referenced for MultipartHandler.java in  » J2EE » Pustefix » de » schlund » pfixxml » multipart » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » J2EE » Pustefix » de.schlund.pfixxml.multipart 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * This file is part of PFIXCORE.
003:         *
004:         * PFIXCORE is free software; you can redistribute it and/or modify
005:         * it under the terms of the GNU Lesser General Public License as published by
006:         * the Free Software Foundation; either version 2 of the License, or
007:         * (at your option) any later version.
008:         *
009:         * PFIXCORE is distributed in the hope that it will be useful,
010:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
011:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
012:         * GNU Lesser General Public License for more details.
013:         *
014:         * You should have received a copy of the GNU Lesser General Public License
015:         * along with PFIXCORE; if not, write to the Free Software
016:         * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
017:         *
018:         */
019:
020:        package de.schlund.pfixxml.multipart;
021:
022:        import java.io.BufferedOutputStream;
023:        import java.io.File;
024:        import java.io.FileOutputStream;
025:        import java.io.IOException;
026:        import java.io.InputStream;
027:        import java.io.InputStreamReader;
028:        import java.io.OutputStream;
029:        import java.io.UnsupportedEncodingException;
030:        import java.text.DecimalFormat;
031:        import java.util.ArrayList;
032:        import java.util.Collections;
033:        import java.util.Date;
034:        import java.util.Enumeration;
035:        import java.util.HashMap;
036:        import java.util.List;
037:
038:        import javax.mail.MessagingException;
039:        import javax.mail.internet.ContentType;
040:        import javax.mail.internet.MailDateFormat;
041:        import javax.mail.internet.MimeUtility;
042:        import javax.servlet.GenericServlet;
043:        import javax.servlet.ServletInputStream;
044:        import javax.servlet.http.HttpServletRequest;
045:
046:        import org.apache.log4j.Logger;
047:        import org.apache.oro.text.perl.Perl5Util;
048:
049:        import de.schlund.pfixxml.AbstractXMLServlet;
050:
051:        /**
052:         *
053:         *
054:         */
055:
056:        public class MultipartHandler {
057:
058:            public static final String CTYPE_HEADER = "Content-Type";
059:            public static final String MULTI_FORM_DATA = "multipart/form-data";
060:            public static final String PARAM_BOUNDARY = "boundary";
061:            public static final String DEFAULT_CHARSET = "iso-8859-1";
062:            public static final String DEFAULT_TRANS_ENC = "7bit";
063:            public static final String DEFAULT_CTYPE = "text/plain; charset="
064:                    + DEFAULT_CHARSET;
065:            public static final String CHARSET_PARAM = "charset";
066:            public static final String CONTENT_DISP_HEADER = "Content-Disposition";
067:            public static final String CONTENT_TRANS_ENC_HEADER = "Content-Transfer-Encoding";
068:            public static final String NAME_PARAM = "name";
069:            public static final String FILENAME_PARAM = "filename";
070:            public static final String CREATION_DATE_PARAM = "creation-date";
071:            public static final String MODIFICATION_DATE_PARAM = "modification-date";
072:            public static final String READ_DATE_PARAM = "read-date";
073:            public static final String SIZE_PARAM = "size";
074:            public static final String FNAME_PATTERN = "00000000";
075:
076:            private final static Object lock = new Object();
077:            private final static DecimalFormat format = new DecimalFormat(
078:                    FNAME_PATTERN);
079:
080:            private HttpServletRequest req = null;
081:            private String dir = null;
082:            private File dirFile = null;
083:            private HashMap<String, ArrayList<PartData>> parameter = null;
084:            private GenericServlet logBase = null;
085:            private ArrayList<FileData> fileuploads = null;
086:            private List<Exception> failedParts = null;
087:            private long maxPartSize = -1;
088:
089:            private final static Logger LOG = Logger
090:                    .getLogger(MultipartHandler.class);
091:
092:            protected static File getDestFile(File dir, String fName)
093:                    throws IOException {
094:                TempFile rc = null;
095:                synchronized (lock) {
096:                    StringBuffer buf = new StringBuffer(fName);
097:                    buf.append('-');
098:                    long curSec = new Date().getTime();
099:                    buf.append(curSec).append(FNAME_PATTERN);
100:                    rc = new TempFile(dir, buf.toString());
101:                    if (rc.exists()) {
102:                        long count = 1;
103:                        String base = buf.substring(0, buf.length()
104:                                - FNAME_PATTERN.length());
105:                        while (rc.exists()) {
106:                            rc = new TempFile(dir, base
107:                                    + format.format(count++));
108:                        }
109:                    }
110:                    rc.createNewFile();
111:                }
112:                return rc;
113:            }
114:
115:            public MultipartHandler(HttpServletRequest pReq, String pDir)
116:                    throws IllegalArgumentException {
117:                this (null, pReq, pDir);
118:            }
119:
120:            /**
121:             * Constructor for MulitpartHandler.
122:             */
123:            public MultipartHandler(GenericServlet base,
124:                    HttpServletRequest pReq, String pDir)
125:                    throws IllegalArgumentException {
126:                logBase = base;
127:                req = pReq;
128:                dir = pDir;
129:                if (req == null) {
130:                    throw new IllegalArgumentException(
131:                            "Got no request req == null.");
132:                }
133:
134:                if (!req.getContentType().toLowerCase().startsWith(
135:                        MULTI_FORM_DATA)) {
136:                    throw new IllegalArgumentException(
137:                            "Request is not a multipart/form-data");
138:                }
139:
140:                if (dir == null) {
141:                    dir = System
142:                            .getProperty(AbstractXMLServlet.DEF_PROP_TMPDIR);
143:                }
144:                dirFile = new File(dir);
145:                if (!dirFile.isDirectory()) {
146:                    throw new IllegalArgumentException("File '" + dir
147:                            + "' isn't a directory");
148:                }
149:                if (!dirFile.canWrite()) {
150:                    throw new IllegalArgumentException("Can't write to dir '"
151:                            + dir + "'.");
152:                }
153:                parameter = new HashMap<String, ArrayList<PartData>>();
154:                fileuploads = new ArrayList<FileData>();
155:                failedParts = new ArrayList<Exception>();
156:            }
157:
158:            public Enumeration<String> getParameterNames() {
159:                return Collections.enumeration(parameter.keySet());
160:            }
161:
162:            public PartData getParameter(String name) {
163:                PartData rc = null;
164:                List<PartData> list = parameter.get(name);
165:                if (list != null && 0 < list.size()) {
166:                    rc = list.get(0);
167:                }
168:                return rc;
169:            }
170:
171:            public List<PartData> getAllParameter(String name) {
172:                return parameter.get(name);
173:            }
174:
175:            public List<FileData> getFileUploads() {
176:                return fileuploads;
177:            }
178:
179:            public List<Exception> getExceptionList() {
180:                return failedParts;
181:            }
182:
183:            public void parseRequest() throws IllegalArgumentException,
184:                    MessagingException, IOException {
185:                String baseCType = req.getHeader(CTYPE_HEADER);
186:                printDebug("******** Content-Type is: '" + baseCType + "'");
187:                ContentType cType = new ContentType(baseCType);
188:                String boundary = cType.getParameter(PARAM_BOUNDARY);
189:                printDebug("******** Boundary is: '" + boundary + "'");
190:                if (boundary == null || boundary.length() <= 0)
191:                    return;
192:
193:                ServletInputStream inS = req.getInputStream();
194:
195:                MultipartStream ms = new MultipartStream(inS);
196:                if (0 < maxPartSize)
197:                    ms.setMaxPartSize(maxPartSize);
198:
199:                ms.setBoundary(boundary);
200:                ms.skipBoundary();
201:                boolean doLoop = true;
202:                RFC822Headers curHeaders = null;
203:                ContentType curCt = null;
204:                String curCtStr = null;
205:                String[] headers = null;
206:                do {
207:                    printDebug("\n");
208:                    curHeaders = new RFC822Headers(ms, req
209:                            .getCharacterEncoding());
210:
211:                    headers = curHeaders.getHeader(CTYPE_HEADER);
212:                    if (headers != null && 0 < headers.length) {
213:                        curCtStr = headers[0];
214:                        curCt = new ContentType(curCtStr);
215:                    } else {
216:                        curCt = new ContentType("text/plain; charset="
217:                                + req.getCharacterEncoding());
218:                    }
219:
220:                    boolean isfile = false;
221:                    HeaderStruct struct = getHeaderStruct(curHeaders,
222:                            CONTENT_DISP_HEADER);
223:                    if (struct != null) {
224:                        String filename = struct.getParam(FILENAME_PARAM);
225:                        if (filename != null) {
226:                            isfile = true;
227:                            //System.out.println("File============"+filename);
228:                        }
229:                    }
230:                    printDebug("*** IS FILE? " + isfile);
231:
232:                    if (curCt.match("text/*") && !isfile) {
233:                        printDebug("parsing text field (" + curCt + ")");
234:                        parseTextField(ms, curHeaders, curCt);
235:                    } else if (curCt.match("multipart/mixed")) {
236:                        printDebug("parsing multipart (" + curCt + ")");
237:                        parseMultiFile(ms, curHeaders, curCt, cType);
238:                    } else {
239:                        printDebug("parsing file (" + curCt + ")");
240:                        parseFile(ms, curHeaders, curCt, null);
241:                    }
242:
243:                    if (!ms.isEndOfMultipart()) {
244:                        printDebug("skipping boundary");
245:                        ms.skipBoundary();
246:                    } else {
247:                        printDebug("end of multipart");
248:                        doLoop = false;
249:                    }
250:                } while (doLoop);
251:            }
252:
253:            protected void parseTextField(MultipartStream ms,
254:                    RFC822Headers headers, ContentType ct)
255:                    throws MessagingException, IOException {
256:                String charEnc = ct.getParameter(CHARSET_PARAM);
257:                if (charEnc == null) {
258:                    charEnc = DEFAULT_CHARSET;
259:                }
260:                printDebug("charEnc: " + charEnc);
261:                HeaderStruct cdStruct = getHeaderStruct(headers,
262:                        CONTENT_DISP_HEADER);
263:                HeaderStruct cteStruct = getHeaderStruct(headers,
264:                        CONTENT_TRANS_ENC_HEADER);
265:                String transEnc = cteStruct.getValue();
266:                if (transEnc == null) {
267:                    transEnc = DEFAULT_TRANS_ENC;
268:                }
269:                printDebug("transEnc: " + transEnc);
270:                String fieldName = cdStruct.getParam(NAME_PARAM);
271:                printDebug("fieldname: " + fieldName);
272:                if (fieldName == null)
273:                    return;
274:
275:                InputStream dataIn = MimeUtility.decode(ms, transEnc);
276:                InputStreamReader inReader = new InputStreamReader(dataIn,
277:                        charEnc);
278:                int tmpVal = -1;
279:                StringBuffer tmpBuf = new StringBuffer();
280:                PartToLongException ex = null;
281:                try {
282:                    do {
283:                        tmpVal = inReader.read();
284:                        if (tmpVal != -1) {
285:                            tmpBuf.append((char) tmpVal);
286:                        }
287:                    } while (tmpVal != -1);
288:                } catch (PartToLongException e) {
289:                    ex = e;
290:                }
291:                if (ex == null) {
292:                    FieldData fPart = new FieldData();
293:                    fPart.setFieldname(fieldName);
294:                    fPart.setPrimaryType(ct.getPrimaryType());
295:                    fPart.setSubType(ct.getSubType());
296:                    fPart.setCharacterset(charEnc);
297:                    fPart.setTransferEncoding(transEnc);
298:                    fPart.setValue(tmpBuf.toString());
299:
300:                    addParameterPart(fPart);
301:                } else {
302:                    ex.setFieldName(fieldName);
303:                    failedParts.add(ex);
304:                }
305:            }
306:
307:            protected void addParameterPart(PartData part) {
308:                try {
309:                    String fieldName = part.getFieldname();
310:                    ArrayList<PartData> params = (ArrayList<PartData>) parameter
311:                            .get(fieldName);
312:                    if (params == null) {
313:                        params = new ArrayList<PartData>();
314:                        parameter.put(fieldName, params);
315:                    }
316:                    params.add(part);
317:                } catch (NullPointerException e) {
318:                    LOG.error(e, e);
319:                }
320:            }
321:
322:            protected void parseMultiFile(MultipartStream ms,
323:                    RFC822Headers headers, ContentType ct, ContentType parentCt)
324:                    throws MessagingException, IOException {
325:                String localBoundary = ct.getParameter(PARAM_BOUNDARY);
326:                ms.setBoundary(localBoundary);
327:                ms.skipBoundary();
328:                RFC822Headers localHeaders = null;
329:                ContentType tmpCt = null;
330:                String[] tmpHeaders = null;
331:                HeaderStruct cdStruct = getHeaderStruct(headers,
332:                        CONTENT_DISP_HEADER);
333:                String fieldName = cdStruct.getParam(NAME_PARAM);
334:                if (fieldName != null && fieldName.length() <= 0)
335:                    fieldName = null;
336:                while (!ms.isEndOfMultipart()) {
337:                    localHeaders = new RFC822Headers(ms, req
338:                            .getCharacterEncoding());
339:                    tmpHeaders = localHeaders.getHeader(CTYPE_HEADER);
340:                    if (tmpHeaders != null && 0 < tmpHeaders.length) {
341:                        tmpCt = new ContentType(tmpHeaders[0]);
342:                        parseFile(ms, localHeaders, tmpCt, fieldName);
343:                    }
344:                    if (!ms.isEndOfMultipart())
345:                        ms.skipBoundary();
346:                }
347:                ms.setBoundary(localBoundary);
348:            }
349:
350:            protected void parseFile(MultipartStream ms, RFC822Headers headers,
351:                    ContentType ct, String defFieldName)
352:                    throws MessagingException, IOException {
353:                HeaderStruct cdStruct = getHeaderStruct(headers,
354:                        CONTENT_DISP_HEADER);
355:                HeaderStruct cteStruct = getHeaderStruct(headers,
356:                        CONTENT_TRANS_ENC_HEADER);
357:                String transEnc = cteStruct.getValue();
358:                if (transEnc == null) {
359:                    transEnc = DEFAULT_TRANS_ENC;
360:                }
361:                String fieldName = null;
362:                if (defFieldName != null) {
363:                    fieldName = defFieldName;
364:                }
365:                if (fieldName == null) {
366:                    fieldName = cdStruct.getParam(NAME_PARAM);
367:                }
368:                if (fieldName == null)
369:                    return;
370:                File localFile = null;
371:                String filename = cdStruct.getParam(FILENAME_PARAM);
372:                PartToLongException ex = null;
373:                if (filename != null && 0 < filename.length()) {
374:                    localFile = getDestFile(dirFile, filename);
375:                    InputStream dataIn = MimeUtility.decode(ms, transEnc);
376:                    OutputStream dataOut = new BufferedOutputStream(
377:                            new FileOutputStream(localFile));
378:                    try {
379:                        int tmpVal = -1;
380:                        do {
381:                            tmpVal = dataIn.read();
382:                            if (tmpVal != -1) {
383:                                dataOut.write(tmpVal);
384:                            }
385:                        } while (tmpVal != -1);
386:                    } catch (PartToLongException e) {
387:                        ex = e;
388:                    } finally {
389:                        dataOut.flush();
390:                        dataOut.close();
391:                    }
392:                }
393:
394:                if (localFile != null) {
395:                    FileData fileP = new FileData();
396:                    fileP.setPrimaryType(ct.getPrimaryType());
397:                    fileP.setSubType(ct.getSubType());
398:                    fileP.setFieldname(fieldName);
399:                    fileP.setFilename(filename);
400:                    fileP.setTransferEncoding(transEnc);
401:                    fileP.setModificationDate(getDateFromParam(cdStruct
402:                            .getParam(MODIFICATION_DATE_PARAM)));
403:                    fileP.setReadDate(getDateFromParam(cdStruct
404:                            .getParam(READ_DATE_PARAM)));
405:                    if (ex == null) {
406:                        fileP.setLocalFilename(localFile.getAbsolutePath());
407:                        fileP.setSize(localFile.length());
408:                        fileP.setLocalFile(localFile);
409:                        fileuploads.add(fileP);
410:                        addParameterPart(fileP);
411:                    } else {
412:                        //delete file resulting from part exceeding the size limit
413:                        if (localFile != null && localFile.exists())
414:                            localFile.delete();
415:                        ex.setFieldName(fieldName);
416:                        failedParts.add(ex);
417:                        //mark as exceeded
418:                        fileP.setExceedsSizeLimit(true);
419:                        fileP.setLocalFilename("");
420:                        fileP.setSize(0);
421:                        addParameterPart(fileP);
422:                    }
423:                }
424:
425:            }
426:
427:            protected Date getDateFromParam(String inStr) {
428:                Date rc = null;
429:                try {
430:                    if (inStr != null && 0 < inStr.length()) {
431:                        MailDateFormat formatter = new MailDateFormat();
432:                        rc = formatter.parse(inStr);
433:                    }
434:                } catch (java.text.ParseException e) {
435:                    rc = null;
436:                }
437:                return rc;
438:            }
439:
440:            protected HeaderStruct getHeaderStruct(RFC822Headers headers,
441:                    String name) {
442:                HeaderStruct rc = null;
443:                if (name != null) {
444:                    rc = new HeaderStruct();
445:                    rc.setName(name);
446:                    try {
447:                        String[] valArr = headers.getHeader(name);
448:                        if (valArr != null && 0 < valArr.length) {
449:                            if (name.equals("Content-Disposition")) {
450:                                //System.out.println("val before:"+valArr[0]);
451:                                valArr[0] = removeIEDirtyPath(valArr[0]);
452:                                //System.out.println("val after :"+valArr[0]);
453:                            }
454:                            String value = MimeUtility.decodeText(valArr[0]);
455:                            int idx = value.indexOf(';');
456:                            if (0 <= idx) {
457:                                rc.setValue(value.substring(0, idx).trim());
458:
459:                                rc.initParams(value.substring(idx));
460:                            } else {
461:                                rc.setValue(value.trim());
462:                            }
463:                        }
464:                    } catch (UnsupportedEncodingException e) {
465:                        rc.resetParams();
466:                    } catch (IndexOutOfBoundsException e) {
467:                        rc.resetParams();
468:                    }
469:                }
470:                return rc;
471:            }
472:
473:            protected void printDebug(String msg) {
474:                try {
475:                    if (LOG != null) {
476:                        LOG.debug(msg);
477:                    } else if (logBase != null) {
478:                        logBase.log("[DEBUG] " + msg);
479:                    }
480:                } catch (Exception e) {
481:                }
482:            }
483:
484:            /**
485:             * Gets the maxPartSize.
486:             * @return Returns a long
487:             */
488:            public long getMaxPartSize() {
489:                return maxPartSize;
490:            }
491:
492:            /**
493:             * Sets the maxPartSize.
494:             * @param maxPartSize The maxPartSize to set
495:             */
496:            public void setMaxPartSize(long maxPartSize) {
497:                this .maxPartSize = maxPartSize;
498:            }
499:
500:            private String removeIEDirtyPath(String str) {
501:                Perl5Util perl = new Perl5Util();
502:                String ret = str;
503:
504:                int fnindex = str.indexOf("filename");
505:                if (fnindex != -1) {
506:                    int blindex = str.indexOf("\\");
507:                    if (blindex > -1 && blindex > fnindex) {
508:                        perl.match("/filename=\"(.*[^\"])\"/", str);
509:                        String fullpath = "";
510:                        fullpath = perl.group(1);
511:
512:                        int index = fullpath.lastIndexOf("\\");
513:                        if (index != -1) {
514:                            String file = "";
515:                            file = fullpath.substring(index + 1);
516:                            file = "\"" + file + "\"";
517:                            ret = perl.substitute(
518:                                    "s/filename=\"(.*[^\"])\"/filename=" + file
519:                                            + "/", str);
520:                        }
521:                    }
522:                }
523:                return ret;
524:            }
525:
526:        }
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