| /* |
| * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @(#)MimeMultipart.java 1.31 03/01/29 |
| */ |
| |
| |
| package com.sun.xml.internal.messaging.saaj.packaging.mime.internet; |
| |
| import com.sun.xml.internal.messaging.saaj.packaging.mime.MessagingException; |
| import com.sun.xml.internal.messaging.saaj.packaging.mime.util.ASCIIUtility; |
| import com.sun.xml.internal.messaging.saaj.packaging.mime.util.OutputUtil; |
| import com.sun.xml.internal.messaging.saaj.util.ByteOutputStream; |
| |
| import javax.activation.DataSource; |
| import java.io.BufferedInputStream; |
| import java.io.ByteArrayInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.util.BitSet; |
| |
| /** |
| * The MimeMultipart class is an implementation of the abstract Multipart |
| * class that uses MIME conventions for the multipart data. <p> |
| * |
| * A MimeMultipart is obtained from a MimePart whose primary type |
| * is "multipart" (by invoking the part's <code>getContent()</code> method) |
| * or it can be created by a client as part of creating a new MimeMessage. <p> |
| * |
| * The default multipart subtype is "mixed". The other multipart |
| * subtypes, such as "alternative", "related", and so on, can be |
| * implemented as subclasses of MimeMultipart with additional methods |
| * to implement the additional semantics of that type of multipart |
| * content. The intent is that service providers, mail JavaBean writers |
| * and mail clients will write many such subclasses and their Command |
| * Beans, and will install them into the JavaBeans Activation |
| * Framework, so that any JavaMail implementation and its clients can |
| * transparently find and use these classes. Thus, a MIME multipart |
| * handler is treated just like any other type handler, thereby |
| * decoupling the process of providing multipart handlers from the |
| * JavaMail API. Lacking these additional MimeMultipart subclasses, |
| * all subtypes of MIME multipart data appear as MimeMultipart objects. <p> |
| * |
| * An application can directly construct a MIME multipart object of any |
| * subtype by using the <code>MimeMultipart(String subtype)</code> |
| * constructor. For example, to create a "multipart/alternative" object, |
| * use <code>new MimeMultipart("alternative")</code>. |
| */ |
| |
| //TODO: cleanup the SharedInputStream handling |
| public class BMMimeMultipart extends MimeMultipart { |
| |
| /* |
| * When true it indicates parsing hasnt been done at all |
| */ |
| private boolean begining = true; |
| |
| int[] bcs = new int[256]; |
| int[] gss = null; |
| private static final int BUFFER_SIZE = 4096; |
| private byte[] buffer = new byte[BUFFER_SIZE]; |
| private byte[] prevBuffer = new byte[BUFFER_SIZE]; |
| private BitSet lastPartFound = new BitSet(1); |
| |
| // cached inputstream which is possibly partially consumed |
| private InputStream in = null; |
| private String boundary = null; |
| // current stream position, set to -1 on EOF |
| int b = 0; |
| |
| // property to indicate if lazyAttachments is ON |
| private boolean lazyAttachments = false; |
| |
| /** |
| * Default constructor. An empty MimeMultipart object |
| * is created. Its content type is set to "multipart/mixed". |
| * A unique boundary string is generated and this string is |
| * setup as the "boundary" parameter for the |
| * <code>contentType</code> field. <p> |
| * |
| * MimeBodyParts may be added later. |
| */ |
| public BMMimeMultipart() { |
| super(); |
| //this("mixed"); |
| } |
| |
| /** |
| * Construct a MimeMultipart object of the given subtype. |
| * A unique boundary string is generated and this string is |
| * setup as the "boundary" parameter for the |
| * <code>contentType</code> field. <p> |
| * |
| * MimeBodyParts may be added later. |
| * |
| * @param subtype subtype. |
| */ |
| public BMMimeMultipart(String subtype) { |
| super(subtype); |
| /* |
| * Compute a boundary string. |
| String boundary = UniqueValue.getUniqueBoundaryValue(); |
| ContentType cType = new ContentType("multipart", subtype, null); |
| contentType.setParameter("boundary", boundary); |
| */ |
| } |
| |
| /** |
| * Constructs a MimeMultipart object and its bodyparts from the |
| * given DataSource. <p> |
| * |
| * This constructor handles as a special case the situation where the |
| * given DataSource is a MultipartDataSource object. In this case, this |
| * method just invokes the superclass (i.e., Multipart) constructor |
| * that takes a MultipartDataSource object. <p> |
| * |
| * Otherwise, the DataSource is assumed to provide a MIME multipart |
| * byte stream. The <code>parsed</code> flag is set to false. When |
| * the data for the body parts are needed, the parser extracts the |
| * "boundary" parameter from the content type of this DataSource, |
| * skips the 'preamble' and reads bytes till the terminating |
| * boundary and creates MimeBodyParts for each part of the stream. |
| * |
| * @param ct content type. |
| * @param ds DataSource, can be a MultipartDataSource. |
| * @throws MessagingException in case of error. |
| */ |
| public BMMimeMultipart(DataSource ds, ContentType ct) |
| throws MessagingException { |
| super(ds, ct); |
| boundary = ct.getParameter("boundary"); |
| /* |
| if (ds instanceof MultipartDataSource) { |
| // ask super to do this for us. |
| setMultipartDataSource((MultipartDataSource)ds); |
| return; |
| } |
| |
| // 'ds' was not a MultipartDataSource, we have |
| // to parse this ourself. |
| parsed = false; |
| this.ds = ds; |
| if (ct==null) |
| contentType = new ContentType(ds.getContentType()); |
| else |
| contentType = ct; |
| */ |
| |
| } |
| |
| public InputStream initStream() throws MessagingException { |
| |
| if (in == null) { |
| try { |
| in = ds.getInputStream(); |
| if (!(in instanceof ByteArrayInputStream) && |
| !(in instanceof BufferedInputStream) && |
| !(in instanceof SharedInputStream)) |
| in = new BufferedInputStream(in); |
| } catch (Exception ex) { |
| throw new MessagingException("No inputstream from datasource"); |
| } |
| |
| if (!in.markSupported()) { |
| throw new MessagingException( |
| "InputStream does not support Marking"); |
| } |
| } |
| return in; |
| } |
| |
| /** |
| * Parse the InputStream from our DataSource, constructing the |
| * appropriate MimeBodyParts. The <code>parsed</code> flag is |
| * set to true, and if true on entry nothing is done. This |
| * method is called by all other methods that need data for |
| * the body parts, to make sure the data has been parsed. |
| * |
| * @since JavaMail 1.2 |
| */ |
| @Override |
| protected void parse() throws MessagingException { |
| if (parsed) |
| return; |
| |
| initStream(); |
| |
| SharedInputStream sin = null; |
| if (in instanceof SharedInputStream) { |
| sin = (SharedInputStream) in; |
| } |
| |
| String bnd = "--" + boundary; |
| byte[] bndbytes = ASCIIUtility.getBytes(bnd); |
| try { |
| parse(in, bndbytes, sin); |
| } catch (IOException ioex) { |
| throw new MessagingException("IO Error", ioex); |
| } catch (Exception ex) { |
| throw new MessagingException("Error", ex); |
| } |
| |
| parsed = true; |
| } |
| |
| public boolean lastBodyPartFound() { |
| return lastPartFound.get(0); |
| } |
| |
| public MimeBodyPart getNextPart( |
| InputStream stream, byte[] pattern, SharedInputStream sin) |
| throws Exception { |
| |
| if (!stream.markSupported()) { |
| throw new Exception("InputStream does not support Marking"); |
| } |
| |
| if (begining) { |
| compile(pattern); |
| if (!skipPreamble(stream, pattern, sin)) { |
| throw new Exception( |
| "Missing Start Boundary, or boundary does not start on a new line"); |
| } |
| begining = false; |
| } |
| |
| if (lastBodyPartFound()) { |
| throw new Exception("No parts found in Multipart InputStream"); |
| } |
| |
| if (sin != null) { |
| long start = sin.getPosition(); |
| b = readHeaders(stream); |
| if (b == -1) { |
| throw new Exception( |
| "End of Stream encountered while reading part headers"); |
| } |
| long[] v = new long[1]; |
| v[0] = -1; // just to ensure the code later sets it correctly |
| b = readBody(stream, pattern, v, null, sin); |
| // looks like this check has to be disabled |
| // it is allowed to have Mime Package without closing boundary |
| if (!ignoreMissingEndBoundary) { |
| if ((b == -1) && !lastBodyPartFound()) { |
| throw new MessagingException("Missing End Boundary for Mime Package : EOF while skipping headers"); |
| } |
| } |
| long end = v[0]; |
| MimeBodyPart mbp = createMimeBodyPart(sin.newStream(start, end)); |
| addBodyPart(mbp); |
| return mbp; |
| |
| } else { |
| InternetHeaders headers = createInternetHeaders(stream); |
| ByteOutputStream baos = new ByteOutputStream(); |
| b = readBody(stream, pattern, null, baos, null); |
| // looks like this check has to be disabled |
| // in the old impl it is allowed to have Mime Package |
| // without closing boundary |
| if (!ignoreMissingEndBoundary) { |
| if ((b == -1) && !lastBodyPartFound()) { |
| throw new MessagingException("Missing End Boundary for Mime Package : EOF while skipping headers"); |
| } |
| } |
| MimeBodyPart mbp = createMimeBodyPart( |
| headers, baos.getBytes(), baos.getCount()); |
| addBodyPart(mbp); |
| return mbp; |
| } |
| |
| } |
| |
| public boolean parse( |
| InputStream stream, byte[] pattern, SharedInputStream sin) |
| throws Exception { |
| |
| while (!lastPartFound.get(0) && (b != -1)) { |
| getNextPart(stream, pattern, sin); |
| } |
| return true; |
| } |
| |
| private int readHeaders(InputStream is) throws Exception { |
| // if the headers are to end properly then there has to be CRLF |
| // actually we just need to mark the start and end positions |
| int b = is.read(); |
| while (b != -1) { |
| // when it is a shared input stream no need to copy |
| if (b == '\r') { |
| b = is.read(); |
| if (b == '\n') { |
| b = is.read(); |
| if (b == '\r') { |
| b = is.read(); |
| if (b == '\n') { |
| return b; |
| } else { |
| continue; |
| } |
| } else { |
| continue; |
| } |
| } else { |
| continue; |
| } |
| } |
| b = is.read(); |
| } |
| if (b == -1) { |
| throw new Exception( |
| "End of inputstream while reading Mime-Part Headers"); |
| } |
| return b; |
| } |
| |
| private int readBody( |
| InputStream is, byte[] pattern, long[] posVector, |
| ByteOutputStream baos, SharedInputStream sin) |
| throws Exception { |
| if (!find(is, pattern, posVector, baos, sin)) { |
| throw new Exception( |
| "Missing boundary delimitier while reading Body Part"); |
| } |
| return b; |
| } |
| |
| private boolean skipPreamble( |
| InputStream is, byte[] pattern, SharedInputStream sin) |
| throws Exception { |
| if (!find(is, pattern, sin)) { |
| return false; |
| } |
| if (lastPartFound.get(0)) { |
| throw new Exception( |
| "Found closing boundary delimiter while trying to skip preamble"); |
| } |
| return true; |
| } |
| |
| |
| public int readNext(InputStream is, byte[] buff, int patternLength, |
| BitSet eof, long[] posVector, SharedInputStream sin) |
| throws Exception { |
| |
| int bufferLength = is.read(buffer, 0, patternLength); |
| if (bufferLength == -1) { |
| eof.flip(0); |
| } else if (bufferLength < patternLength) { |
| //repeatedly read patternLength - bufferLength |
| int temp = 0; |
| long pos = 0; |
| int i = bufferLength; |
| for (; i < patternLength; i++) { |
| if (sin != null) { |
| pos = sin.getPosition(); |
| } |
| temp = is.read(); |
| if (temp == -1) { |
| eof.flip(0); |
| if (sin != null) { |
| posVector[0] = pos; |
| } |
| break; |
| } |
| buffer[i] = (byte) temp; |
| } |
| bufferLength = i; |
| } |
| return bufferLength; |
| } |
| |
| public boolean find(InputStream is, byte[] pattern, SharedInputStream sin) |
| throws Exception { |
| int i; |
| int l = pattern.length; |
| int lx = l - 1; |
| BitSet eof = new BitSet(1); |
| long[] posVector = new long[1]; |
| |
| while (true) { |
| is.mark(l); |
| readNext(is, buffer, l, eof, posVector, sin); |
| if (eof.get(0)) { |
| // End of stream |
| return false; |
| } |
| |
| /* |
| if (bufferLength < l) { |
| //is.reset(); |
| return false; |
| }*/ |
| |
| for (i = lx; i >= 0; i--) { |
| if (buffer[i] != pattern[i]) { |
| break; |
| } |
| } |
| |
| if (i < 0) { |
| // found the boundary, skip *LWSP-char and CRLF |
| if (!skipLWSPAndCRLF(is)) { |
| throw new Exception("Boundary does not terminate with CRLF"); |
| } |
| return true; |
| } |
| |
| int s = Math.max(i + 1 - bcs[buffer[i] & 0x7f], gss[i]); |
| is.reset(); |
| is.skip(s); |
| } |
| } |
| |
| public boolean find( |
| InputStream is, byte[] pattern, long[] posVector, |
| ByteOutputStream out, SharedInputStream sin) throws Exception { |
| int i; |
| int l = pattern.length; |
| int lx = l - 1; |
| int bufferLength = 0; |
| int s = 0; |
| long endPos = -1; |
| byte[] tmp = null; |
| |
| boolean first = true; |
| BitSet eof = new BitSet(1); |
| |
| while (true) { |
| is.mark(l); |
| if (!first) { |
| tmp = prevBuffer; |
| prevBuffer = buffer; |
| buffer = tmp; |
| } |
| if (sin != null) { |
| endPos = sin.getPosition(); |
| } |
| |
| bufferLength = readNext(is, buffer, l, eof, posVector, sin); |
| |
| if (bufferLength == -1) { |
| // End of stream |
| // looks like it is allowed to not have a closing boundary |
| //return false; |
| //if (sin != null) { |
| // posVector[0] = endPos; |
| //} |
| b = -1; |
| if ((s == l) && (sin == null)) { |
| out.write(prevBuffer, 0, s); |
| } |
| return true; |
| } |
| |
| if (bufferLength < l) { |
| if (sin != null) { |
| //endPos = sin.getPosition(); |
| //posVector[0] = endPos; |
| } else { |
| // looks like it is allowed to not have a closing boundary |
| // in the old implementation |
| out.write(buffer, 0, bufferLength); |
| } |
| // looks like it is allowed to not have a closing boundary |
| // in the old implementation |
| //return false; |
| b = -1; |
| return true; |
| } |
| |
| for (i = lx; i >= 0; i--) { |
| if (buffer[i] != pattern[i]) { |
| break; |
| } |
| } |
| |
| if (i < 0) { |
| if (s > 0) { |
| //looks like the earlier impl allowed just an LF |
| // so if s == 1 : it must be an LF |
| // if s == 2 : it must be a CR LF |
| if (s <= 2) { |
| //it could be "some-char\n" so write some-char |
| if (s == 2) { |
| if (prevBuffer[1] == '\n') { |
| if (prevBuffer[0] != '\r' && prevBuffer[0] != '\n') { |
| out.write(prevBuffer, 0, 1); |
| } |
| if (sin != null) { |
| posVector[0] = endPos; |
| } |
| |
| } else { |
| throw new Exception( |
| "Boundary characters encountered in part Body " + |
| "without a preceeding CRLF"); |
| } |
| |
| } else if (s == 1) { |
| if (prevBuffer[0] != '\n') { |
| throw new Exception( |
| "Boundary characters encountered in part Body " + |
| "without a preceeding CRLF"); |
| } else { |
| if (sin != null) { |
| posVector[0] = endPos; |
| } |
| } |
| } |
| |
| } else if (s > 2) { |
| if ((prevBuffer[s - 2] == '\r') && (prevBuffer[s - 1] == '\n')) { |
| if (sin != null) { |
| posVector[0] = endPos - 2; |
| } else { |
| out.write(prevBuffer, 0, s - 2); |
| } |
| } else if (prevBuffer[s - 1] == '\n') { |
| //old impl allowed just a \n |
| if (sin != null) { |
| posVector[0] = endPos - 1; |
| } else { |
| out.write(prevBuffer, 0, s - 1); |
| } |
| } else { |
| throw new Exception( |
| "Boundary characters encountered in part Body " + |
| "without a preceeding CRLF"); |
| } |
| } |
| } |
| // found the boundary, skip *LWSP-char and CRLF |
| if (!skipLWSPAndCRLF(is)) { |
| //throw new Exception( |
| // "Boundary does not terminate with CRLF"); |
| } |
| return true; |
| } |
| |
| if ((s > 0) && (sin == null)) { |
| if (prevBuffer[s - 1] == (byte) 13) { |
| // if buffer[0] == (byte)10 |
| if (buffer[0] == (byte) 10) { |
| int j; |
| for (j = lx - 1; j > 0; j--) { |
| if (buffer[j + 1] != pattern[j]) { |
| break; |
| } |
| } |
| if (j == 0) { |
| // matched the pattern excluding the last char of the pattern |
| // so dont write the CR into stream |
| out.write(prevBuffer, 0, s - 1); |
| } else { |
| out.write(prevBuffer, 0, s); |
| } |
| } else { |
| out.write(prevBuffer, 0, s); |
| } |
| } else { |
| out.write(prevBuffer, 0, s); |
| } |
| } |
| |
| s = Math.max(i + 1 - bcs[buffer[i] & 0x7f], gss[i]); |
| is.reset(); |
| is.skip(s); |
| if (first) { |
| first = false; |
| } |
| } |
| } |
| |
| private boolean skipLWSPAndCRLF(InputStream is) throws Exception { |
| |
| b = is.read(); |
| //looks like old impl allowed just a \n as well |
| if (b == '\n') { |
| return true; |
| } |
| |
| if (b == '\r') { |
| b = is.read(); |
| //skip any multiple '\r' "\r\n" --> "\r\r\n" on Win2k |
| if (b == '\r') { |
| b = is.read(); |
| } |
| if (b == '\n') { |
| return true; |
| } else { |
| throw new Exception( |
| "transport padding after a Mime Boundary should end in a CRLF, found CR only"); |
| } |
| } |
| |
| if (b == '-') { |
| b = is.read(); |
| if (b != '-') { |
| throw new Exception( |
| "Unexpected singular '-' character after Mime Boundary"); |
| } else { |
| //System.out.println("Last Part Found"); |
| lastPartFound.flip(0); |
| // read the next char |
| b = is.read(); |
| } |
| } |
| |
| while ((b != -1) && ((b == ' ') || (b == '\t'))) { |
| b = is.read(); |
| if (b == '\n') { |
| return true; |
| } |
| if (b == '\r') { |
| b = is.read(); |
| //skip any multiple '\r': "\r\n" --> "\r\r\n" on Win2k |
| if (b == '\r') { |
| b = is.read(); |
| } |
| if (b == '\n') { |
| return true; |
| } |
| } |
| } |
| |
| if (b == -1) { |
| // the last boundary need not have CRLF |
| if (!lastPartFound.get(0)) { |
| throw new Exception( |
| "End of Multipart Stream before encountering closing boundary delimiter"); |
| } |
| return true; |
| } |
| return false; |
| } |
| |
| private void compile(byte[] pattern) { |
| int l = pattern.length; |
| |
| int i; |
| int j; |
| |
| // Copied from J2SE 1.4 regex code |
| // java.util.regex.Pattern.java |
| |
| // Initialise Bad Character Shift table |
| for (i = 0; i < l; i++) { |
| bcs[pattern[i]] = i + 1; |
| } |
| |
| // Initialise Good Suffix Shift table |
| gss = new int[l]; |
| NEXT: |
| for (i = l; i > 0; i--) { |
| // j is the beginning index of suffix being considered |
| for (j = l - 1; j >= i; j--) { |
| // Testing for good suffix |
| if (pattern[j] == pattern[j - i]) { |
| // pattern[j..len] is a good suffix |
| gss[j - 1] = i; |
| } else { |
| // No match. The array has already been |
| // filled up with correct values before. |
| continue NEXT; |
| } |
| } |
| while (j > 0) { |
| gss[--j] = i; |
| } |
| } |
| gss[l - 1] = 1; |
| } |
| |
| |
| /** |
| * Iterates through all the parts and outputs each Mime part |
| * separated by a boundary. |
| */ |
| |
| @Override |
| public void writeTo(OutputStream os) |
| throws IOException, MessagingException { |
| |
| // inputStream was not null |
| if (in != null) { |
| contentType.setParameter("boundary", this.boundary); |
| } |
| |
| String bnd = "--" + contentType.getParameter("boundary"); |
| for (int i = 0; i < parts.size(); i++) { |
| OutputUtil.writeln(bnd, os); // put out boundary |
| parts.get(i).writeTo(os); |
| OutputUtil.writeln(os); // put out empty line |
| } |
| |
| if (in != null) { |
| OutputUtil.writeln(bnd, os); // put out boundary |
| if ((os instanceof ByteOutputStream) && lazyAttachments) { |
| ((ByteOutputStream) os).write(in); |
| } else { |
| ByteOutputStream baos = null; |
| try { |
| baos = new ByteOutputStream(in.available()); |
| baos.write(in); |
| baos.writeTo(os); |
| // reset the inputstream so that we can support a |
| // getAttachment later |
| in = baos.newInputStream(); |
| } finally { |
| if (baos != null) |
| baos.close(); |
| } |
| } |
| |
| // this will endup writing the end boundary |
| } else { |
| // put out last boundary |
| OutputUtil.writeAsAscii(bnd, os); |
| OutputUtil.writeAsAscii("--", os); |
| } |
| } |
| |
| public void setInputStream(InputStream is) { |
| this.in = is; |
| } |
| |
| public InputStream getInputStream() { |
| return this.in; |
| } |
| |
| public void setBoundary(String bnd) { |
| this.boundary = bnd; |
| if (this.contentType != null) { |
| this.contentType.setParameter("boundary", bnd); |
| } |
| } |
| |
| public String getBoundary() { |
| return this.boundary; |
| } |
| |
| public boolean isEndOfStream() { |
| return (b == -1); |
| } |
| |
| public void setLazyAttachments(boolean flag) { |
| lazyAttachments = flag; |
| } |
| |
| } |
