+// Copyright 2000-2005 the Contributors, as shown in the revision logs.
+// Licensed under the Apache Public Source License 2.0 ("the License").
+// You may not use this file except in compliance with the License.
+
package org.ibex.mail;
+import static org.ibex.mail.MailException.*;
+import org.ibex.crypto.*;
+import org.ibex.util.*;
+import org.ibex.mail.protocol.*;
+import org.ibex.js.*;
+import org.ibex.io.*;
+import org.ibex.io.Fountain;
+import java.util.*;
+import java.net.*;
+import java.io.*;
// FEATURE: MIME RFC2045, 2046, 2049
/** This class contains logic for encoding and decoding MIME multipart messages */
public class MIME {
- public static class QuotedPrintable {
-
- public static String decode(String s, boolean lax) {
- //
- // =XX -> hex representation, must be uppercase
- // 9, 32, 33-60, 62-126 can be literal
- // 9, 32 at end-of-line must get encoded
- // trailing whitespace must be deleted when decoding
- // =\n = soft line break
- // lines cannot be more than 76 chars long
- //
-
- // lax is used for RFC2047 headers; removes restrictions on which chars you can encode
- return s;
+
+ public static class Part extends JSReflection implements Fountain {
+ public final Headers headers;
+ public final ContentType contentType;
+ private final String encoding;
+
+ private final Fountain all;
+ private final Fountain body;
+
+ public Stream getStream() { return all.getStream(); }
+ public int getNumLines() { return all.getNumLines(); }
+ public int getLength() { return all.getLength(); }
+ public Fountain getBody() { return body; }
+
+ private class BodyFountain implements Fountain {
+ public int getNumLines() { return Stream.countLines(getStream()); }
+ public int getLength() { return Part.this.getLength() - headers.getLength() - 2; }
+ public Stream getStream() {
+ return /*
+ "quoted-printable".equals(encoding) ? Encode.QuotedPrintable.decode(body.toString(),false) :
+ "base64".equals(encoding) ? Encode.fromBase64(body.toString()) :
+ */
+ Headers.Original.skip(all.getStream());
+ }
+ }
+
+ public Part(Fountain all) {
+ this.headers = new Headers.Original(all.getStream());
+ String ctype = headers.get("content-type");
+ this.encoding = headers.get("content-transfer-encoding");
+ if (!(encoding == null || encoding.equals("7bit") || encoding.equals("8bit") || encoding.equals("binary") ||
+ encoding.equals("quoted-printable") || encoding.equals("base64"))) {
+ // FIXME: "7BIT" is popular
+ Log.warn(MIME.class, "unknown TransferEncoding \"" + encoding + "\"");
+ ctype = "application/octet-stream";
+ }
+ this.contentType = new ContentType(ctype, headers.get("content-description"), headers.get("content-id"), encoding);
+ this.all = all;
+ this.body = new BodyFountain();
+ }
+
+ /*
+ public Part getPart(int i) {
+ Stream stream = body.getStream();
+ Vec v = new Vec();
+ // first part begins with a boundary delimiter
+ for(String s = stream.readln(); s != null; s = stream.readln())
+ if (s.equals("--" + contentType.parameters.get("boundary"))) break;
+ while(true) {
+ Stream substream = new BoundaryStream(stream, (String)contentType.parameters.get("boundary"));
+ Part p = new Part(substream, true, null); // FIXME split off headers
+ v.addElement(p);
+ if (substream.isLast()) break;
+ }
+ return parts = (Part[])v.copyInto(new Part[v.size()]);
+ }
+ */
+ }
+ /*
+ public static class Boundary implements Stream.Transformer {
+ private final String boundary;
+ private boolean done = false;
+ private boolean last = false;
+ public Boundary(String bounardy) { this.boundary = boundary; }
+ public boolean isLast() { while(!done) readln(); return last; }
+ public Stream transform(Stream stream) {
+ for(String s = stream.readln(); s != null; s = stream.readln()) {
+ if (boundary != null && (s.equals(boundary) || s.equals(boundary + "--"))) {
+ body.setLength(body.length() - 2); // preceeding CRLF is part of delimiter
+ last = s.equals(boundary + "--");
+ done = true;
+ break;
+ }
+ body.append(s);
+ body.append("\r\n");
+ //lines++;
+ }
}
}
+ */
}