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/*
* Copyright (c) 1997, 2022 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0, which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package com.sun.xml.ws.encoding;
import com.sun.istack.NotNull;
import com.sun.istack.Nullable;
import com.sun.xml.ws.api.message.Attachment;
import com.sun.xml.ws.api.message.AttachmentEx;
import com.sun.xml.ws.developer.StreamingAttachmentFeature;
import com.sun.xml.ws.developer.StreamingDataHandler;
import com.sun.xml.ws.util.ByteArrayBuffer;
import com.sun.xml.ws.util.ByteArrayDataSource;
import org.jvnet.mimepull.Header;
import org.jvnet.mimepull.MIMEMessage;
import org.jvnet.mimepull.MIMEPart;
import jakarta.activation.DataHandler;
import jakarta.xml.soap.SOAPException;
import jakarta.xml.soap.SOAPMessage;
import javax.xml.transform.Source;
import javax.xml.transform.stream.StreamSource;
import jakarta.xml.ws.WebServiceException;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* Parses Mime multipart message into primary part and attachment parts. It
* parses the stream lazily as and when required.
*
* @author Vivek Pandey
* @author Jitendra Kotamraju
*/
public final class MimeMultipartParser {
private final String start;
private final MIMEMessage message;
private Attachment root;
private ContentTypeImpl contentType;
// Attachments without root part
private final Map attachments = new HashMap<>();
private boolean gotAll;
public MimeMultipartParser(InputStream in, String cType, StreamingAttachmentFeature feature) {
this.contentType = new ContentTypeImpl(cType);
// ContentType ct = new ContentType(cType);
// String boundary = ct.getParameter("boundary");
String boundary = contentType.getBoundary();
if (boundary == null || boundary.equals("")) {
throw new WebServiceException("MIME boundary parameter not found" + contentType);
}
message = (feature != null)
? new MIMEMessage(in, boundary, feature.getConfig())
: new MIMEMessage(in, boundary);
// Strip <...> from root part's Content-ID
// String st = ct.getParameter("start");
String st = contentType.getRootId();
if (st != null && st.length() > 2 && st.charAt(0) == '<' && st.charAt(st.length()-1) == '>') {
st = st.substring(1, st.length()-1);
}
start = st;
}
/**
* Parses the stream and returns the root part. If start parameter is
* present in Content-Type, it is used to determine the root part, otherwise
* root part is the first part.
*
* @return StreamAttachment for root part
* null if root part cannot be found
*
*/
public @Nullable Attachment getRootPart() {
if (root == null) {
root = new PartAttachment((start != null) ? message.getPart(start) : message.getPart(0));
}
return root;
}
/**
* Parses the entire stream and returns all MIME parts except root MIME part.
*
* @return Map<String, StreamAttachment> for all attachment parts
*/
public @NotNull Map getAttachmentParts() {
if (!gotAll) {
MIMEPart rootPart = (start != null) ? message.getPart(start) : message.getPart(0);
List parts = message.getAttachments();
for(MIMEPart part : parts) {
if (part != rootPart) {
String cid = part.getContentId();
if (!attachments.containsKey(cid)) {
PartAttachment attach = new PartAttachment(part);
attachments.put(attach.getContentId(), attach);
}
}
}
gotAll = true;
}
return attachments;
}
/**
* This method can be called to get a matching MIME attachment part for the
* given contentId. It parses the stream until it finds a matching part.
*
* @return StreamAttachment attachment for contentId
* null if there is no attachment for contentId
*/
public @Nullable Attachment getAttachmentPart(String contentId) throws IOException {
//first see if this attachment is already parsed, if so return it
Attachment attach = attachments.get(contentId);
if (attach == null) {
MIMEPart part = message.getPart(contentId);
attach = new PartAttachment(part);
attachments.put(contentId, attach);
}
return attach;
}
static class PartAttachment implements AttachmentEx {
final MIMEPart part;
byte[] buf;
private StreamingDataHandler streamingDataHandler;
PartAttachment(MIMEPart part) {
this.part = part;
}
public @NotNull @Override String getContentId() {
return part.getContentId();
}
public @NotNull @Override String getContentType() {
return part.getContentType();
}
@Override
public byte[] asByteArray() {
if (buf == null) {
ByteArrayBuffer baf = new ByteArrayBuffer();
try {
baf.write(part.readOnce());
} catch(IOException ioe) {
throw new WebServiceException(ioe);
} finally {
if (baf != null) {
try {
baf.close();
} catch (IOException ex) {
Logger.getLogger(MimeMultipartParser.class.getName()).log(Level.FINE, null, ex);
}
}
}
buf = baf.toByteArray();
}
return buf;
}
@Override
public DataHandler asDataHandler() {
if (streamingDataHandler == null) {
streamingDataHandler = (buf != null)
? new DataSourceStreamingDataHandler(new ByteArrayDataSource(buf,getContentType()))
: new MIMEPartStreamingDataHandler(part);
}
return streamingDataHandler;
}
@Override
public Source asSource() {
return (buf != null)
? new StreamSource(new ByteArrayInputStream(buf))
: new StreamSource(part.read());
}
@Override
public InputStream asInputStream() {
return (buf != null)
? new ByteArrayInputStream(buf) : part.read();
}
@Override
public void writeTo(OutputStream os) throws IOException {
if (buf != null) {
os.write(buf);
} else {
InputStream in = part.read();
byte[] temp = new byte[8192];
int len;
while((len=in.read(temp)) != -1) {
os.write(temp, 0, len);
}
in.close();
}
}
@Override
public void writeTo(SOAPMessage saaj) throws SOAPException {
saaj.createAttachmentPart().setDataHandler(asDataHandler());
}
// AttachmentEx methods begin here
@Override
public Iterator getMimeHeaders() {
final Iterator ih = part.getAllHeaders()
.iterator();
return new Iterator<>() {
@Override
public boolean hasNext() {
return ih.hasNext();
}
@Override
public MimeHeader next() {
final Header hdr = ih.next();
return new AttachmentEx.MimeHeader() {
@Override
public String getValue() {
return hdr.getValue();
}
@Override
public String getName() {
return hdr.getName();
}
};
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
};
}
}
public ContentTypeImpl getContentType() {
return contentType;
}
}