mirror of https://github.com/moparisthebest/k-9
724 lines
23 KiB
Java
724 lines
23 KiB
Java
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package com.fsck.k9.mail.internet;
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import java.io.BufferedWriter;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.io.OutputStreamWriter;
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import java.text.SimpleDateFormat;
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import java.util.Date;
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import java.util.TimeZone;
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import java.util.LinkedList;
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import java.util.Locale;
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import java.util.Set;
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import java.util.UUID;
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import org.apache.commons.io.IOUtils;
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import org.apache.james.mime4j.MimeException;
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import org.apache.james.mime4j.dom.field.DateTimeField;
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import org.apache.james.mime4j.field.DefaultFieldParser;
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import org.apache.james.mime4j.io.EOLConvertingInputStream;
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import org.apache.james.mime4j.parser.ContentHandler;
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import org.apache.james.mime4j.parser.MimeStreamParser;
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import org.apache.james.mime4j.stream.BodyDescriptor;
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import org.apache.james.mime4j.stream.Field;
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import org.apache.james.mime4j.stream.MimeConfig;
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import org.apache.james.mime4j.util.MimeUtil;
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import com.fsck.k9.mail.Address;
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import com.fsck.k9.mail.Body;
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import com.fsck.k9.mail.BodyPart;
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import com.fsck.k9.mail.CompositeBody;
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import com.fsck.k9.mail.Message;
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import com.fsck.k9.mail.MessagingException;
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import com.fsck.k9.mail.Multipart;
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import com.fsck.k9.mail.Part;
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/**
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* An implementation of Message that stores all of it's metadata in RFC 822 and
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* RFC 2045 style headers.
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*/
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public class MimeMessage extends Message {
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private MimeHeader mHeader = new MimeHeader();
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protected Address[] mFrom;
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protected Address[] mTo;
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protected Address[] mCc;
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protected Address[] mBcc;
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protected Address[] mReplyTo;
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protected String mMessageId;
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private String[] mReferences;
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private String[] mInReplyTo;
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private Date mSentDate;
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private SimpleDateFormat mDateFormat;
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private Body mBody;
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protected int mSize;
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private String serverExtra;
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public MimeMessage() {
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}
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/**
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* Parse the given InputStream using Apache Mime4J to build a MimeMessage.
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*
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* @param in
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* @param recurse A boolean indicating to recurse through all nested MimeMessage subparts.
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* @throws IOException
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* @throws MessagingException
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*/
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public MimeMessage(InputStream in, boolean recurse) throws IOException, MessagingException {
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parse(in, recurse);
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}
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/**
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* Parse the given InputStream using Apache Mime4J to build a MimeMessage.
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* Does not recurse through nested bodyparts.
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*/
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public final void parse(InputStream in) throws IOException, MessagingException {
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parse(in, false);
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}
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private void parse(InputStream in, boolean recurse) throws IOException, MessagingException {
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mHeader.clear();
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mFrom = null;
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mTo = null;
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mCc = null;
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mBcc = null;
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mReplyTo = null;
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mMessageId = null;
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mReferences = null;
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mInReplyTo = null;
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mSentDate = null;
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mBody = null;
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MimeConfig parserConfig = new MimeConfig();
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parserConfig.setMaxHeaderLen(-1); // The default is a mere 10k
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parserConfig.setMaxLineLen(-1); // The default is 1000 characters. Some MUAs generate
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// REALLY long References: headers
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parserConfig.setMaxHeaderCount(-1); // Disable the check for header count.
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MimeStreamParser parser = new MimeStreamParser(parserConfig);
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parser.setContentHandler(new MimeMessageBuilder());
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if (recurse) {
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parser.setRecurse();
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}
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try {
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parser.parse(new EOLConvertingInputStream(in));
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} catch (MimeException me) {
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//TODO wouldn't a MessagingException be better?
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throw new Error(me);
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}
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}
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@Override
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public Date getSentDate() {
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if (mSentDate == null) {
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try {
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DateTimeField field = (DateTimeField)DefaultFieldParser.parse("Date: "
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+ MimeUtility.unfoldAndDecode(getFirstHeader("Date")));
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mSentDate = field.getDate();
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} catch (Exception e) {
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}
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}
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return mSentDate;
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}
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/**
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* Sets the sent date object member as well as *adds* the 'Date' header
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* instead of setting it (for performance reasons).
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*
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* @see #mSentDate
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* @param sentDate
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* @throws com.fsck.k9.mail.MessagingException
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*/
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public void addSentDate(Date sentDate, boolean hideTimeZone) throws MessagingException {
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if (mDateFormat == null) {
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mDateFormat = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss Z", Locale.US);
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}
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if (hideTimeZone) {
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mDateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
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}
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addHeader("Date", mDateFormat.format(sentDate));
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setInternalSentDate(sentDate);
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}
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@Override
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public void setSentDate(Date sentDate, boolean hideTimeZone) throws MessagingException {
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removeHeader("Date");
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addSentDate(sentDate, hideTimeZone);
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}
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public void setInternalSentDate(Date sentDate) {
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this.mSentDate = sentDate;
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}
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@Override
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public String getContentType() {
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String contentType = getFirstHeader(MimeHeader.HEADER_CONTENT_TYPE);
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return (contentType == null) ? "text/plain" : contentType;
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}
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@Override
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public String getDisposition() throws MessagingException {
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return getFirstHeader(MimeHeader.HEADER_CONTENT_DISPOSITION);
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}
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@Override
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public String getContentId() {
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return null;
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}
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@Override
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public String getMimeType() {
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return MimeUtility.getHeaderParameter(getContentType(), null);
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}
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@Override
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public boolean isMimeType(String mimeType) throws MessagingException {
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return getMimeType().equalsIgnoreCase(mimeType);
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}
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@Override
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public int getSize() {
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return mSize;
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}
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/**
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* Returns a list of the given recipient type from this message. If no addresses are
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* found the method returns an empty array.
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*/
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@Override
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public Address[] getRecipients(RecipientType type) throws MessagingException {
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if (type == RecipientType.TO) {
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if (mTo == null) {
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mTo = Address.parse(MimeUtility.unfold(getFirstHeader("To")));
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}
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return mTo;
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} else if (type == RecipientType.CC) {
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if (mCc == null) {
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mCc = Address.parse(MimeUtility.unfold(getFirstHeader("CC")));
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}
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return mCc;
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} else if (type == RecipientType.BCC) {
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if (mBcc == null) {
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mBcc = Address.parse(MimeUtility.unfold(getFirstHeader("BCC")));
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}
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return mBcc;
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} else {
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throw new MessagingException("Unrecognized recipient type.");
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}
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}
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@Override
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public void setRecipients(RecipientType type, Address[] addresses) throws MessagingException {
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if (type == RecipientType.TO) {
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if (addresses == null || addresses.length == 0) {
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removeHeader("To");
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this.mTo = null;
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} else {
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setHeader("To", Address.toEncodedString(addresses));
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this.mTo = addresses;
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}
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} else if (type == RecipientType.CC) {
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if (addresses == null || addresses.length == 0) {
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removeHeader("CC");
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this.mCc = null;
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} else {
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setHeader("CC", Address.toEncodedString(addresses));
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this.mCc = addresses;
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}
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} else if (type == RecipientType.BCC) {
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if (addresses == null || addresses.length == 0) {
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removeHeader("BCC");
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this.mBcc = null;
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} else {
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setHeader("BCC", Address.toEncodedString(addresses));
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this.mBcc = addresses;
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}
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} else {
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throw new MessagingException("Unrecognized recipient type.");
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}
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}
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/**
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* Returns the unfolded, decoded value of the Subject header.
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*/
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@Override
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public String getSubject() {
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return MimeUtility.unfoldAndDecode(getFirstHeader("Subject"), this);
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}
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@Override
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public void setSubject(String subject) throws MessagingException {
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setHeader("Subject", subject);
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}
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@Override
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public Address[] getFrom() {
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if (mFrom == null) {
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String list = MimeUtility.unfold(getFirstHeader("From"));
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if (list == null || list.length() == 0) {
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list = MimeUtility.unfold(getFirstHeader("Sender"));
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}
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mFrom = Address.parse(list);
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}
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return mFrom;
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}
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@Override
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public void setFrom(Address from) throws MessagingException {
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if (from != null) {
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setHeader("From", from.toEncodedString());
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this.mFrom = new Address[] {
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from
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};
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} else {
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this.mFrom = null;
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}
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}
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@Override
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public Address[] getReplyTo() {
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if (mReplyTo == null) {
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mReplyTo = Address.parse(MimeUtility.unfold(getFirstHeader("Reply-to")));
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}
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return mReplyTo;
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}
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@Override
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public void setReplyTo(Address[] replyTo) throws MessagingException {
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if (replyTo == null || replyTo.length == 0) {
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removeHeader("Reply-to");
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mReplyTo = null;
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} else {
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setHeader("Reply-to", Address.toEncodedString(replyTo));
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mReplyTo = replyTo;
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}
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}
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@Override
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public String getMessageId() throws MessagingException {
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if (mMessageId == null) {
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mMessageId = getFirstHeader("Message-ID");
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}
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return mMessageId;
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}
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public void generateMessageId() throws MessagingException {
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String hostname = null;
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if (mFrom != null && mFrom.length >= 1) {
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hostname = mFrom[0].getHostname();
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}
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if (hostname == null && mReplyTo != null && mReplyTo.length >= 1) {
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hostname = mReplyTo[0].getHostname();
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}
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if (hostname == null) {
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hostname = "email.android.com";
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}
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/* We use upper case here to match Apple Mail Message-ID format (for privacy) */
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String messageId = "<" + UUID.randomUUID().toString().toUpperCase(Locale.US) + "@" + hostname + ">";
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setMessageId(messageId);
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}
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public void setMessageId(String messageId) throws MessagingException {
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setHeader("Message-ID", messageId);
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mMessageId = messageId;
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}
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@Override
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public void setInReplyTo(String inReplyTo) throws MessagingException {
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setHeader("In-Reply-To", inReplyTo);
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}
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@Override
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public String[] getReferences() throws MessagingException {
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if (mReferences == null) {
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mReferences = getHeader("References");
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}
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return mReferences;
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}
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@Override
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public void setReferences(String references) throws MessagingException {
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/*
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* Make sure the References header doesn't exceed the maximum header
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* line length and won't get (Q-)encoded later. Otherwise some clients
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* will break threads apart.
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*
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* For more information see issue 1559.
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*/
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// Make sure separator is SPACE to prevent Q-encoding when TAB is encountered
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references = references.replaceAll("\\s+", " ");
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/*
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* NOTE: Usually the maximum header line is 998 + CRLF = 1000 characters.
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* But at least one implementations seems to have problems with 998
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* characters, so we adjust for that fact.
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*/
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final int limit = 1000 - 2 /* CRLF */ - 12 /* "References: " */ - 1 /* Off-by-one bugs */;
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final int originalLength = references.length();
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if (originalLength >= limit) {
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// Find start of first reference
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final int start = references.indexOf('<');
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// First reference + SPACE
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final String firstReference = references.substring(start,
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references.indexOf('<', start + 1));
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// Find longest tail
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final String tail = references.substring(references.indexOf('<',
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firstReference.length() + originalLength - limit));
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references = firstReference + tail;
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}
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setHeader("References", references);
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}
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@Override
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public Body getBody() {
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return mBody;
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}
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@Override
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public void setBody(Body body) {
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this.mBody = body;
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}
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private String getFirstHeader(String name) {
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return mHeader.getFirstHeader(name);
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}
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@Override
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public void addHeader(String name, String value) throws MessagingException {
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mHeader.addHeader(name, value);
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}
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@Override
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public void addRawHeader(String name, String raw) {
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mHeader.addRawHeader(name, raw);
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}
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@Override
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public void setHeader(String name, String value) throws MessagingException {
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mHeader.setHeader(name, value);
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}
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@Override
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public String[] getHeader(String name) throws MessagingException {
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return mHeader.getHeader(name);
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}
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@Override
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public void removeHeader(String name) throws MessagingException {
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mHeader.removeHeader(name);
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}
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@Override
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public Set<String> getHeaderNames() throws MessagingException {
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return mHeader.getHeaderNames();
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}
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@Override
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public void writeTo(OutputStream out) throws IOException, MessagingException {
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BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(out), 1024);
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mHeader.writeTo(out);
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writer.write("\r\n");
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writer.flush();
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if (mBody != null) {
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mBody.writeTo(out);
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}
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}
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@Override
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public void writeHeaderTo(OutputStream out) throws IOException, MessagingException {
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mHeader.writeTo(out);
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}
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@Override
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public InputStream getInputStream() throws MessagingException {
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return null;
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}
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@Override
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public void setEncoding(String encoding) throws MessagingException {
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if (mBody != null) {
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mBody.setEncoding(encoding);
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}
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setHeader(MimeHeader.HEADER_CONTENT_TRANSFER_ENCODING, encoding);
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}
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@Override
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public void setCharset(String charset) throws MessagingException {
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mHeader.setCharset(charset);
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if (mBody instanceof Multipart) {
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((Multipart)mBody).setCharset(charset);
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} else if (mBody instanceof TextBody) {
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CharsetSupport.setCharset(charset, this);
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((TextBody)mBody).setCharset(charset);
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}
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}
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private class MimeMessageBuilder implements ContentHandler {
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private final LinkedList<Object> stack = new LinkedList<Object>();
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public MimeMessageBuilder() {
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}
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private void expect(Class<?> c) {
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if (!c.isInstance(stack.peek())) {
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throw new IllegalStateException("Internal stack error: " + "Expected '"
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+ c.getName() + "' found '" + stack.peek().getClass().getName() + "'");
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}
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}
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@Override
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public void startMessage() {
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if (stack.isEmpty()) {
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stack.addFirst(MimeMessage.this);
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} else {
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expect(Part.class);
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Part part = (Part) stack.peek();
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MimeMessage m = new MimeMessage();
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part.setBody(m);
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stack.addFirst(m);
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}
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}
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@Override
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public void endMessage() {
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expect(MimeMessage.class);
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stack.removeFirst();
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}
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@Override
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public void startHeader() {
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expect(Part.class);
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}
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@Override
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public void endHeader() {
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expect(Part.class);
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}
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@Override
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public void startMultipart(BodyDescriptor bd) {
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expect(Part.class);
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Part e = (Part)stack.peek();
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try {
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String contentType = e.getContentType();
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String mimeType = MimeUtility.getHeaderParameter(contentType, null);
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String boundary = MimeUtility.getHeaderParameter(contentType, "boundary");
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MimeMultipart multiPart = new MimeMultipart(mimeType, boundary);
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e.setBody(multiPart);
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stack.addFirst(multiPart);
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} catch (MessagingException me) {
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throw new Error(me);
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}
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}
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@Override
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public void body(BodyDescriptor bd, InputStream in) throws IOException {
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expect(Part.class);
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try {
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Body body = MimeUtility.createBody(in, bd.getTransferEncoding(), bd.getMimeType());
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((Part)stack.peek()).setBody(body);
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} catch (MessagingException me) {
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throw new Error(me);
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}
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}
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@Override
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public void endMultipart() {
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expect(Multipart.class);
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Multipart multipart = (Multipart) stack.removeFirst();
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boolean hasNoBodyParts = multipart.getCount() == 0;
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boolean hasNoEpilogue = multipart.getEpilogue() == null;
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if (hasNoBodyParts && hasNoEpilogue) {
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/*
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* The parser is calling startMultipart(), preamble(), and endMultipart() when all we have is
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* headers of a "multipart/*" part. But there's really no point in keeping a Multipart body if all
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* of the content is missing.
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*/
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expect(Part.class);
|
|
Part part = (Part) stack.peek();
|
|
part.setBody(null);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void startBodyPart() {
|
|
expect(MimeMultipart.class);
|
|
|
|
try {
|
|
MimeBodyPart bodyPart = new MimeBodyPart();
|
|
((MimeMultipart)stack.peek()).addBodyPart(bodyPart);
|
|
stack.addFirst(bodyPart);
|
|
} catch (MessagingException me) {
|
|
throw new Error(me);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void endBodyPart() {
|
|
expect(BodyPart.class);
|
|
stack.removeFirst();
|
|
}
|
|
|
|
@Override
|
|
public void preamble(InputStream is) throws IOException {
|
|
expect(MimeMultipart.class);
|
|
ByteArrayOutputStream preamble = new ByteArrayOutputStream();
|
|
IOUtils.copy(is, preamble);
|
|
((MimeMultipart)stack.peek()).setPreamble(preamble.toByteArray());
|
|
}
|
|
|
|
@Override
|
|
public void epilogue(InputStream is) throws IOException {
|
|
expect(MimeMultipart.class);
|
|
ByteArrayOutputStream epilogue = new ByteArrayOutputStream();
|
|
IOUtils.copy(is, epilogue);
|
|
((MimeMultipart) stack.peek()).setEpilogue(epilogue.toByteArray());
|
|
}
|
|
|
|
@Override
|
|
public void raw(InputStream is) throws IOException {
|
|
throw new UnsupportedOperationException("Not supported");
|
|
}
|
|
|
|
@Override
|
|
public void field(Field parsedField) throws MimeException {
|
|
expect(Part.class);
|
|
try {
|
|
String name = parsedField.getName();
|
|
String raw = parsedField.getRaw().toString();
|
|
((Part) stack.peek()).addRawHeader(name, raw);
|
|
} catch (MessagingException me) {
|
|
throw new Error(me);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Copy the contents of this object into another {@code MimeMessage} object.
|
|
*
|
|
* @param destination The {@code MimeMessage} object to receive the contents of this instance.
|
|
*/
|
|
protected void copy(MimeMessage destination) {
|
|
super.copy(destination);
|
|
|
|
destination.mHeader = mHeader.clone();
|
|
|
|
destination.mBody = mBody;
|
|
destination.mMessageId = mMessageId;
|
|
destination.mSentDate = mSentDate;
|
|
destination.mDateFormat = mDateFormat;
|
|
destination.mSize = mSize;
|
|
|
|
// These arrays are not supposed to be modified, so it's okay to reuse the references
|
|
destination.mFrom = mFrom;
|
|
destination.mTo = mTo;
|
|
destination.mCc = mCc;
|
|
destination.mBcc = mBcc;
|
|
destination.mReplyTo = mReplyTo;
|
|
destination.mReferences = mReferences;
|
|
destination.mInReplyTo = mInReplyTo;
|
|
}
|
|
|
|
@Override
|
|
public MimeMessage clone() {
|
|
MimeMessage message = new MimeMessage();
|
|
copy(message);
|
|
return message;
|
|
}
|
|
|
|
@Override
|
|
public long getId() {
|
|
return Long.parseLong(mUid); //or maybe .mMessageId?
|
|
}
|
|
|
|
@Override
|
|
public String getPreview() {
|
|
return "";
|
|
}
|
|
|
|
@Override
|
|
public boolean hasAttachments() {
|
|
return false;
|
|
}
|
|
|
|
|
|
@Override
|
|
public void setUsing7bitTransport() throws MessagingException {
|
|
String type = getFirstHeader(MimeHeader.HEADER_CONTENT_TYPE);
|
|
/*
|
|
* We don't trust that a multipart/* will properly have an 8bit encoding
|
|
* header if any of its subparts are 8bit, so we automatically recurse
|
|
* (as long as its not multipart/signed).
|
|
*/
|
|
if (mBody instanceof CompositeBody
|
|
&& !"multipart/signed".equalsIgnoreCase(type)) {
|
|
setEncoding(MimeUtil.ENC_7BIT);
|
|
// recurse
|
|
((CompositeBody) mBody).setUsing7bitTransport();
|
|
} else if (!MimeUtil.ENC_8BIT
|
|
.equalsIgnoreCase(getFirstHeader(MimeHeader.HEADER_CONTENT_TRANSFER_ENCODING))) {
|
|
return;
|
|
} else if (type != null
|
|
&& (type.equalsIgnoreCase("multipart/signed") || type
|
|
.toLowerCase(Locale.US).startsWith("message/"))) {
|
|
/*
|
|
* This shouldn't happen. In any case, it would be wrong to convert
|
|
* them to some other encoding for 7bit transport.
|
|
*
|
|
* RFC 1847 says multipart/signed must be 7bit. It also says their
|
|
* bodies must be treated as opaque, so we must not change the
|
|
* encoding.
|
|
*
|
|
* We've dealt with (CompositeBody) type message/rfc822 above. Here
|
|
* we must deal with all other message/* types. RFC 2045 says
|
|
* message/* can only be 7bit or 8bit. RFC 2046 says unknown
|
|
* message/* types must be treated as application/octet-stream,
|
|
* which means we can't recurse into them. It also says that
|
|
* existing subtypes message/partial and message/external must only
|
|
* be 7bit, and that future subtypes "should be" 7bit.
|
|
*/
|
|
throw new MessagingException(
|
|
"Unable to convert 8bit body part to 7bit");
|
|
} else {
|
|
setEncoding(MimeUtil.ENC_QUOTED_PRINTABLE);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public String getServerExtra() {
|
|
return serverExtra;
|
|
}
|
|
|
|
@Override
|
|
public void setServerExtra(String serverExtra) {
|
|
this.serverExtra = serverExtra;
|
|
}
|
|
|
|
|
|
}
|