gecko-dev/grendel/storage/MessageReadOnly.java
1998-09-09 00:52:38 +00:00

302 lines
8.2 KiB
Java

/* -*- Mode: java; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.0 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* The Original Code is the Grendel mail/news client.
*
* The Initial Developer of the Original Code is Netscape Communications
* Corporation. Portions created by Netscape are Copyright (C) 1997
* Netscape Communications Corporation. All Rights Reserved.
*
* Created: Terry Weissman <terry@netscape.com>, 24 Nov 1997.
*/
package grendel.storage;
import calypso.util.NetworkDate;
import calypso.util.Assert;
import calypso.util.ByteBuf;
import java.io.InputStream;
import java.io.IOException;
import java.util.Date;
import java.util.Enumeration;
import java.util.Vector;
import javax.activation.DataHandler;
import javax.mail.Address;
import javax.mail.Flags;
import javax.mail.Folder;
import javax.mail.IllegalWriteException;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.MethodNotSupportedException;
import javax.mail.Multipart;
import javax.mail.Part;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.InternetHeaders;
/** This implements those methods on Message which are commonly used in all
of our read-only message implementations. It also provides an
implementation for the header-reading routines, all of which assume that
the subclass implements getHeadersObj, a method to get an InternetHeaders
object for this message. */
abstract class MessageReadOnly extends Message {
MessageReadOnly() {
super();
}
MessageReadOnly(Folder f, int num) {
super(f, num);
}
protected void readonly() throws MessagingException {
throw new IllegalWriteException("Can't edit this message.");
}
public void addFrom(Address addresses[]) throws MessagingException {
readonly();
}
public void setSubject(String s)throws MessagingException {
readonly();
}
public void setRecipients(Message.RecipientType type, Address addresses[])
throws MessagingException
{
readonly();
}
public void addRecipients(Message.RecipientType type, Address addresses[])
throws MessagingException
{
readonly();
}
public void setFrom() throws MessagingException {
readonly();
}
public void setFrom(Address address) throws MessagingException {
readonly();
}
public void setSentDate(Date d) throws MessagingException {
readonly();
}
public String getContentType() {
return "message/rfc822";
}
public String getDisposition() {
return null;
}
public String getDescription() {
return null;
}
public String getFileName() {
return null;
}
public void setDisposition(String d) throws MessagingException {
readonly();
}
public void setDescription(String d) throws MessagingException {
readonly();
}
public void setFileName(String f) throws MessagingException {
readonly();
}
public void setDataHandler(DataHandler d) {
Assert.NotYetImplemented("Can't set a datahandler on our readonly messages!");
}
public void setText(String s) throws MessagingException {
readonly();
}
public void setContent(String s) throws MessagingException {
readonly();
}
public void setContent(Object o, String s) {
Assert.NotYetImplemented("Can't set content on our readonly messages!");
}
public void setContent(Multipart m) {
Assert.NotYetImplemented("Can't set content on our readonly messages!");
}
public void addHeader(String s1, String s2) throws MessagingException {
readonly();
}
public void setHeader(String s1, String s2) throws MessagingException {
readonly();
}
public void removeHeader(String s) throws MessagingException {
readonly();
}
/** Get the InternetHeaders object. */
abstract protected InternetHeaders getHeadersObj() throws MessagingException;
public String[] getHeader(String name) throws MessagingException {
return getHeadersObj().getHeader(name);
}
protected String getOneHeader(String name) throws MessagingException {
String[] list = getHeader(name);
if (list == null || list.length < 1) return null;
return list[0];
}
public Address[] getRecipients(Message.RecipientType type)
throws MessagingException {
String[] list;
if (type.equals(Message.RecipientType.TO)) {
list = getHeader("To");
} else if (type.equals(Message.RecipientType.CC)) {
list = getHeader("Cc");
} else if (type.equals(Message.RecipientType.BCC)) {
list = getHeader("Bcc");
} else {
throw new IllegalArgumentException("Bad type " + type);
}
if (list == null || list.length == 0) {
return new Address[0];
}
if (list.length == 1) {
return InternetAddress.parse(list[0]);
}
Vector result = new Vector();
for (int i=0 ; i<list.length ; i++) {
Address[] addrs = InternetAddress.parse(list[i]);
if (addrs != null) {
for (int j=0 ; j<addrs.length ; j++) {
result.addElement(addrs[j]);
}
}
}
Address[] addrs = new Address[result.size()];
result.copyInto(addrs);
return addrs;
}
public Address[] getFrom() throws MessagingException {
// ### Much more needs to be done here.
String str = getOneHeader("From");
if (str != null) {
return InternetAddress.parse(str);
}
return null;
}
public Date getSentDate() throws MessagingException {
String str = getOneHeader("Date");
if (str == null) return null;
return NetworkDate.parseDate(new ByteBuf(str));
}
public long getSentDateAsLong() {
try {
return getSentDate().getTime();
} catch (MessagingException e) {
return 0;
}
}
public String getSubject() throws MessagingException {
return getOneHeader("Subject");
}
public Enumeration getAllHeaders() {
Assert.NotYetImplemented("MessageBase.getAllHeaders -- don't know what it's really supposed to do!");
return null;
}
public Enumeration getMatchingHeaders(String s[]) {
Assert.NotYetImplemented("MessageBase.getMatchingHeaders -- don't know what it's really supposed to do!");
return null;
}
public Enumeration getNonMatchingHeaders(String s[]) {
Assert.NotYetImplemented("MessageBase.getNonMatchingHeaders -- don't know what it's really supposed to do!");
return null;
}
public Message reply(boolean replyToAll) {
Assert.NotYetImplemented("MessageReadOnly.reply");
return null;
}
public boolean isMimeType(String mimeType) {
Assert.NotYetImplemented("MessageReadOnly.isMimeType");
return false;
}
/** This default implementation of getInputStream() works in terms of
getInputStreamWithHeaders. Subclasses are encouraged to define this
more directly if they have an easy way of doing so. */
public InputStream getInputStream() throws MessagingException {
InputStream in = getInputStreamWithHeaders();
if (in == null) return null;
// Now read until we hit a blank line.
int b1 = 0;
int b2 = 0;
try {
while ((b2 = in.read()) >= 0) {
if (b1 == '\r') {
if (b2 == '\r') {
// Two CR's in a row; done.
break;
}
} else if (b1 == '\n') {
if (b2 == '\n') {
// Two LF's in a row; done.
break;
} else if (b2 == '\r') {
// We have a LFCR. It's gotta be the middle of a CRLFCRLF. So,
// we need to read one more character and then we're done.
b1 = b2;
b2 = in.read();
if (b2 == '\n') break;
}
}
b1 = b2;
}
} catch (IOException e) {
throw new MessagingException("Can't skip headers in stream", e);
}
return in;
}
public InputStream getInputStreamWithHeaders() throws MessagingException {
throw new MethodNotSupportedException("MessageBase.getInputStreamWithHeaders");
}
}