android.gov.nist.javax.sip.message.MultipartMimeContentImpl Maven / Gradle / Ivy
/*
* Conditions Of Use
*
* This software was developed by employees of the National Institute of
* Standards and Technology (NIST), an agency of the Federal Government.
* Pursuant to title 15 Untied States Code Section 105, works of NIST
* employees are not subject to copyright protection in the United States
* and are considered to be in the public domain. As a result, a formal
* license is not needed to use the software.
*
* This software is provided by NIST as a service and is expressly
* provided "AS IS." NIST MAKES NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED
* OR STATUTORY, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTY OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT
* AND DATA ACCURACY. NIST does not warrant or make any representations
* regarding the use of the software or the results thereof, including but
* not limited to the correctness, accuracy, reliability or usefulness of
* the software.
*
* Permission to use this software is contingent upon your acceptance
* of the terms of this agreement
*
* .
*
*/
/*******************************************************************************
* Product of NIST/ITL Advanced Networking Technologies Division (ANTD) *
*******************************************************************************/
package android.gov.nist.javax.sip.message;
import android.gov.nist.core.Separators;
import android.gov.nist.javax.sip.header.HeaderFactoryExt;
import android.gov.nist.javax.sip.header.HeaderFactoryImpl;
import java.text.ParseException;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.NoSuchElementException;
import java.util.Scanner;
import android.javax.sip.header.ContentDispositionHeader;
import android.javax.sip.header.ContentTypeHeader;
import android.javax.sip.header.Header;
/**
* Content list for multipart mime content type.
*
* WARNING -- do not directly cast to this this class.
* Use the methods of the interface that it implements.
*
*
* @author M. Ranganathan
*
*/
public class MultipartMimeContentImpl implements MultipartMimeContent {
public static final String BOUNDARY = "boundary";
private List contentList = new LinkedList();
private HeaderFactoryExt headerFactory = new HeaderFactoryImpl();
private ContentTypeHeader multipartMimeContentTypeHeader;
private String boundary;
/**
* Creates a default content list.
*/
public MultipartMimeContentImpl(ContentTypeHeader contentTypeHeader) {
this.multipartMimeContentTypeHeader = contentTypeHeader;
this.boundary = contentTypeHeader.getParameter(BOUNDARY);
}
/*
* (non-Javadoc)
*
* @see android.gov.nist.javax.sip.message.MultipartMimeContentExt#add(android.gov.nist.javax.sip.message.Content)
*/
public boolean add(Content content) {
return contentList.add((ContentImpl) content);
}
/*
* (non-Javadoc)
*
* @see android.gov.nist.javax.sip.message.MultipartMimeContentExt#getContentTypeHeader()
*/
public ContentTypeHeader getContentTypeHeader() {
return multipartMimeContentTypeHeader;
}
/*
* (non-Javadoc)
*
* @see android.gov.nist.javax.sip.message.MultipartMimeContentExt#toString()
*/
@Override
public String toString() {
StringBuilder result = new StringBuilder();
for (Content content : this.contentList) {
result.append("--" + boundary + Separators.NEWLINE);
result.append(content.toString());
result.append(Separators.NEWLINE);
}
if (!contentList.isEmpty()) {
result.append("--" + boundary + "--");
}
return result.toString();
}
/**
* unpack a multipart mime packet and set a list of content packets.
*
* @return -- an iterator of Content blocks.
*
*/
public void createContentList(String body) throws ParseException {
if (boundary != null) {
Scanner scanner = new Scanner(body);
// scanner.useDelimiter("--" + boundary + "(--)?\r?\n?");
scanner.useDelimiter("\r?\n?--" + boundary + "(--)?\r?\n?");
while (scanner.hasNext()) {
try {
String bodyPart = scanner.next();
Content partContent = parseBodyPart(bodyPart);
contentList.add(partContent);
} catch (NoSuchElementException e) {
// ignore
// this is needed for a jain sip bug #16: the scanner which detects an extra
// delimiter when the body is a multiple of the buffer size
}
}
} else {
// No boundary had been set, we will consider the body as a single part
ContentImpl content = parseBodyPart(body);
content.setContentTypeHeader(this.getContentTypeHeader());
this.contentList.add(content);
}
}
private ContentImpl parseBodyPart(String bodyPart) throws ParseException {
String headers[] = null;
String bodyContent;
// if a empty line starts the body it means no headers are present
if (bodyPart.startsWith("\n") || bodyPart.startsWith("\r\n")) {
bodyContent = bodyPart;
} else {
// limit the number of crlf (new lines) we split on, only split the header from
// the body and don't split on any crlf in the body
String[] nextPartSplit = bodyPart.split("\r?\n\r?\n", 2);
bodyContent = bodyPart;
if (nextPartSplit.length == 2) {
// since we aren't completely sure the data is a header let's test the first one
String potentialHeaders[] = nextPartSplit[0].split("\r?\n");
if (potentialHeaders[0].indexOf(":") > 0) {
headers = potentialHeaders;
bodyContent = nextPartSplit[1];
}
}
}
ContentImpl content = new ContentImpl(bodyContent);
if (headers != null) {
for (String partHeader : headers) {
Header header = headerFactory.createHeader(partHeader);
if (header instanceof ContentTypeHeader) {
content.setContentTypeHeader((ContentTypeHeader) header);
} else if (header instanceof ContentDispositionHeader) {
content.setContentDispositionHeader((ContentDispositionHeader) header);
} else {
content.addExtensionHeader(header);
}
}
}
return content;
}
/*
* (non-Javadoc)
*
* @see android.gov.nist.javax.sip.message.MultipartMimeContentExt#setContent(java.lang.String,
* java.lang.String, android.gov.nist.javax.sip.message.Content)
*/
public void addContent(Content content) {
this.add(content);
}
public Iterator getContents() {
return this.contentList.iterator();
}
public int getContentCount() {
return this.contentList.size();
}
}