예제 #1
0
static int
MimeMultipartSigned_emit_child (MimeObject *obj)
{
  MimeMultipartSigned *sig = (MimeMultipartSigned *) obj;
  MimeMultipart *mult = (MimeMultipart *) obj;
  MimeContainer *cont = (MimeContainer *) obj;
  int status = 0;
  MimeObject *body;

  NS_ASSERTION(sig->crypto_closure, "no crypto closure");

  /* Emit some HTML saying whether the signature was cool.
   But don't emit anything if in FO_QUOTE_MESSAGE mode.
   */
  if (obj->options &&
    obj->options->headers != MimeHeadersCitation &&
    obj->options->write_html_p &&
    obj->options->output_fn &&
    obj->options->headers != MimeHeadersCitation &&
    sig->crypto_closure)
  {
    char *html = (((MimeMultipartSignedClass *) obj->clazz)
          ->crypto_generate_html (sig->crypto_closure));
#if 0 // XXX For the moment, no HTML output. Fix this XXX //
    if (!html) return -1; /* MIME_OUT_OF_MEMORY? */

    status = MimeObject_write(obj, html, strlen(html), false);
    PR_Free(html);
    if (status < 0) return status;
#endif

    /* Now that we have written out the crypto stamp, the outermost header
     block is well and truly closed.  If this is in fact the outermost
     message, then run the post_header_html_fn now.
     */
    if (obj->options &&
      obj->options->state &&
      obj->options->generate_post_header_html_fn &&
      !obj->options->state->post_header_html_run_p)
    {
      MimeHeaders *outer_headers=nsnull;
      MimeObject *p;
      for (p = obj; p->parent; p = p->parent)
      outer_headers = p->headers;
      NS_ASSERTION(obj->options->state->first_data_written_p,
                   "should have already written some data");
      html = obj->options->generate_post_header_html_fn(NULL,
                          obj->options->html_closure,
                              outer_headers);
      obj->options->state->post_header_html_run_p = true;
      if (html)
      {
        status = MimeObject_write(obj, html, strlen(html), false);
        PR_Free(html);
        if (status < 0) return status;
      }
    }
  }


  /* Oh, this is fairly nasty.  We're skipping over our "create child" method
   and using the one our superclass defines.  Perhaps instead we should add
   a new method on this class, and initialize that method to be the
   create_child method of the superclass.  Whatever.
   */


  /* The superclass method expects to find the headers for the part that it's
   to create in mult->hdrs, so ensure that they're there. */
  NS_ASSERTION(!mult->hdrs, "shouldn't already have hdrs for multipart");
  if (mult->hdrs) MimeHeaders_free(mult->hdrs);
  mult->hdrs = sig->body_hdrs;
  sig->body_hdrs = 0;

  /* Run the superclass create_child method.
   */
  status = (((MimeMultipartClass *)(&MIME_SUPERCLASS))->create_child(obj));
  if (status < 0) return status;

  // Notify the charset of the first part.
  if (obj->options && !(obj->options->override_charset)) {
    MimeObject *firstChild = ((MimeContainer*) obj)->children[0];
    char *disposition = MimeHeaders_get (firstChild->headers,
                                         HEADER_CONTENT_DISPOSITION, 
                                         true,
                                         false);
    // check if need to show as inline
    if (!disposition)
    {
      const char *content_type = firstChild->content_type;
      if (!PL_strcasecmp (content_type, TEXT_PLAIN) ||
          !PL_strcasecmp (content_type, TEXT_HTML) ||
          !PL_strcasecmp (content_type, TEXT_MDL) ||
          !PL_strcasecmp (content_type, MULTIPART_ALTERNATIVE) ||
          !PL_strcasecmp (content_type, MULTIPART_RELATED) ||
          !PL_strcasecmp (content_type, MESSAGE_NEWS) ||
          !PL_strcasecmp (content_type, MESSAGE_RFC822)) {
        char *ct = MimeHeaders_get(mult->hdrs, HEADER_CONTENT_TYPE, false, false);
        if (ct) {
          char *cset = MimeHeaders_get_parameter (ct, "charset", NULL, NULL);
          if (cset) {
            mimeEmitterUpdateCharacterSet(obj->options, cset);
            SetMailCharacterSetToMsgWindow(obj, cset);
            PR_Free(cset);
          }
          PR_Free(ct);
        }
      }
    }
  }
  
  // The js emitter wants to know about the newly created child.  Because
  //  MimeMultipartSigned dummies out its create_child operation, the logic
  //  in MimeMultipart_parse_line that would normally provide this notification
  //  does not get to fire.
  if (obj->options && obj->options->notify_nested_bodies) {
    MimeObject *kid = ((MimeContainer*) obj)->children[0];
    // The emitter is expecting the content type with parameters; not the fully
    //  parsed thing, so get it from raw.  (We do not do it in the charset
    //  notification block that just happened because it already has complex
    //  if-checks that do not jive with us.
    char *ct = MimeHeaders_get(mult->hdrs, HEADER_CONTENT_TYPE, false,
                               false);
    mimeEmitterAddHeaderField(obj->options, HEADER_CONTENT_TYPE,
                              ct ? ct : "text/plain");
    PR_Free(ct);
    
    char *part_path = mime_part_address(kid);
    if (part_path) {
      mimeEmitterAddHeaderField(obj->options,
                                "x-jsemitter-part-path",
                                part_path);
      PR_Free(part_path);
    }
  }

  /* Retrieve the child that it created.
   */
  NS_ASSERTION(cont->nchildren == 1, "should only have one child");
  if (cont->nchildren != 1)
    return -1;
  body = cont->children[0];
  NS_ASSERTION(body, "missing body");
  if (!body)
    return -1;

#ifdef MIME_DRAFTS
  if (body->options->decompose_file_p) {
    body->options->signed_p = true;
    if (!mime_typep(body, (MimeObjectClass*)&mimeMultipartClass) &&
    body->options->decompose_file_init_fn)
    body->options->decompose_file_init_fn ( body->options->stream_closure, body->headers );
  }
#endif /* MIME_DRAFTS */

  /* If there's no part_buffer, this is a zero-length signed message? */
  if (sig->part_buffer)
  {
#ifdef MIME_DRAFTS
    if (body->options->decompose_file_p &&
      !mime_typep(body, (MimeObjectClass*)&mimeMultipartClass)  &&
      body->options->decompose_file_output_fn)
      status = MimePartBufferRead (sig->part_buffer,
                 /* The (nsresult (*) ...) cast is to turn the
                  `void' argument into `MimeObject'. */
                 ((nsresult (*) (const char *, PRInt32, void *))
                 body->options->decompose_file_output_fn),
                 body->options->stream_closure);
    else
#endif /* MIME_DRAFTS */

    status = MimePartBufferRead (sig->part_buffer,
                 /* The (nsresult (*) ...) cast is to turn the
                  `void' argument into `MimeObject'. */
                 ((nsresult (*) (const char *, PRInt32, void *))
                body->clazz->parse_buffer),
                body);
    if (status < 0) return status;
  }

  MimeMultipartSigned_cleanup(obj, false);

  /* Done parsing. */
  status = body->clazz->parse_eof(body, false);
  if (status < 0) return status;
  status = body->clazz->parse_end(body, false);
  if (status < 0) return status;

#ifdef MIME_DRAFTS
  if (body->options->decompose_file_p &&
    !mime_typep(body, (MimeObjectClass*)&mimeMultipartClass)  &&
    body->options->decompose_file_close_fn)
    body->options->decompose_file_close_fn(body->options->stream_closure);
#endif /* MIME_DRAFTS */

  /* Put out a separator after every multipart/signed object. */
  status = MimeObject_write_separator(obj);
  if (status < 0) return status;

  return 0;
}
예제 #2
0
static int
MimeMessage_write_headers_html (MimeObject *obj)
{
  MimeMessage     *msg = (MimeMessage *) obj;
  int             status;

#ifdef MOZ_SECURITY
  HG33391
#endif /* MOZ_SECURITY */

  if (!obj->options || !obj->options->output_fn)
    return 0;

  PR_ASSERT(obj->output_p && obj->options->write_html_p);

  // To support the no header option! Make sure we are not
  // suppressing headers on included email messages...
  if ( (obj->options->headers == MimeHeadersNone) &&
       (obj == obj->options->state->root) )
  {
    // Ok, we are going to kick the Emitter for a StartHeader
    // operation ONLY WHEN THE CHARSET OF THE ORIGINAL MESSAGE IS
    // NOT US-ASCII ("ISO-8859-1")
    //
    // This is only to notify the emitter of the charset of the
    // original message
    char    *mailCharset = DetermineMailCharset(msg);

    if ( (mailCharset) && (PL_strcasecmp(mailCharset, "US-ASCII")) &&
         (PL_strcasecmp(mailCharset, "ISO-8859-1")) )
      mimeEmitterUpdateCharacterSet(obj->options, mailCharset);
    PR_FREEIF(mailCharset);
    return 0;
  }

  if (!obj->options->state->first_data_written_p)
  {
    status = MimeObject_output_init (obj, TEXT_HTML);
    if (status < 0)
    {
      mimeEmitterEndHeader(obj->options);
      return status;
    }
    PR_ASSERT(obj->options->state->first_data_written_p);
  }

  // Start the header parsing by the emitter
  char *msgID = MimeHeaders_get (msg->hdrs, HEADER_MESSAGE_ID,
                                    PR_FALSE, PR_FALSE);
  PRBool outer_p = !obj->headers; /* is this the outermost message? */
  if (!outer_p && obj->options->format_out == nsMimeOutput::nsMimeMessageBodyDisplay &&
      obj->options->part_to_load)
  {
    //Maybe we are displaying a embedded message as outer part!
    char *id = mime_part_address(obj);
    if (id)
    {
      outer_p = !strcmp(id, obj->options->part_to_load);
      PR_Free(id);
    }
  }

  // Ok, we should really find out the charset of this part. We always
  // output UTF-8 for display, but the original charset is necessary for
  // reply and forward operations.
  //
  char    *mailCharset = DetermineMailCharset(msg);
  mimeEmitterStartHeader(obj->options,
                            outer_p,
                            (obj->options->headers == MimeHeadersOnly),
                            msgID,
                            mailCharset);

  // Change the default_charset by the charset of the original message
  // ONLY WHEN THE CHARSET OF THE ORIGINAL MESSAGE IS NOT US-ASCII
  // ("ISO-8859-1") and defailt_charset and mailCharset are different.
  if ( (mailCharset) && (PL_strcasecmp(mailCharset, "US-ASCII")) &&
       (PL_strcasecmp(mailCharset, "ISO-8859-1")) &&
       (PL_strcasecmp(obj->options->default_charset, mailCharset)) &&
       !obj->options->override_charset )
  {
    PR_FREEIF(obj->options->default_charset);
    obj->options->default_charset = strdup(mailCharset);
  }

  PR_FREEIF(msgID);
  PR_FREEIF(mailCharset);

#ifdef MOZ_SECURITY
    HG00919
#endif /* MOZ_SECURITY */

  status = MimeHeaders_write_all_headers (msg->hdrs, obj->options, PR_FALSE);
  if (status < 0)
  {
    mimeEmitterEndHeader(obj->options);
    return status;
  }

  if (msg->crypto_stamped_p)
  {
#ifdef MOZ_SECURITY
    HG11995
#endif /* MOZ_SECURITY */
  }
  else
  {
  /* If we're not writing a xlation stamp, and this is the outermost
  message, then now is the time to run the post_header_html_fn.
  (Otherwise, it will be run when the xlation-stamp is finally
  closed off, in MimeXlateed_emit_buffered_child() or
  MimeMultipartSigned_emit_child().)
     */
    if (obj->options &&
      obj->options->state &&
      obj->options->generate_post_header_html_fn &&
      !obj->options->state->post_header_html_run_p)
    {
      char *html = 0;
      PR_ASSERT(obj->options->state->first_data_written_p);
      html = obj->options->generate_post_header_html_fn(NULL,
                                          obj->options->html_closure,
                                          msg->hdrs);
      obj->options->state->post_header_html_run_p = PR_TRUE;
      if (html)
      {
        status = MimeObject_write(obj, html, strlen(html), PR_FALSE);
        PR_Free(html);
        if (status < 0)
        {
          mimeEmitterEndHeader(obj->options);
          return status;
        }
      }
    }
  }

  mimeEmitterEndHeader(obj->options);

  // rhp:
  // For now, we are going to parse the entire message, even if we are
  // only interested in headers...why? Well, because this is the only
  // way to build the attachment list. Now we will have the attachment
  // list in the output being created by the XML emitter. If we ever
  // want to go back to where we were before, just uncomment the conditional
  // and it will stop at header parsing.
  //
  // if (obj->options->headers == MimeHeadersOnly)
  //   return -1;
  // else

  return 0;
}
예제 #3
0
static int
MimeMultipart_parse_line (const char *line, PRInt32 length, MimeObject *obj)
{
  MimeMultipart *mult = (MimeMultipart *) obj;
  int status = 0;
  MimeMultipartBoundaryType boundary;

  NS_ASSERTION(line && *line, "empty line in multipart parse_line");
  if (!line || !*line) return -1;

  NS_ASSERTION(!obj->closed_p, "obj shouldn't already be closed");
  if (obj->closed_p) return -1;

  /* If we're supposed to write this object, but aren't supposed to convert
     it to HTML, simply pass it through unaltered. */
  if (obj->output_p &&
    obj->options &&
    !obj->options->write_html_p &&
    obj->options->output_fn
          && obj->options->format_out != nsMimeOutput::nsMimeMessageAttach)
  return MimeObject_write(obj, line, length, PR_TRUE);


  if (mult->state == MimeMultipartEpilogue)  /* already done */
    boundary = MimeMultipartBoundaryTypeNone;
  else
    boundary = ((MimeMultipartClass *)obj->clazz)->check_boundary(obj, line,
                                                                  length);

  if (boundary == MimeMultipartBoundaryTypeTerminator ||
    boundary == MimeMultipartBoundaryTypeSeparator)
  {
  /* Match!  Close the currently-open part, move on to the next
     state, and discard this line.
   */
    PRBool endOfPart = (mult->state != MimeMultipartPreamble);
    if (endOfPart)
      status = ((MimeMultipartClass *)obj->clazz)->close_child(obj);
    if (status < 0) return status;
    
    if (boundary == MimeMultipartBoundaryTypeTerminator)
      mult->state = MimeMultipartEpilogue;
    else
    {
      mult->state = MimeMultipartHeaders;
      
      /* Reset the header parser for this upcoming part. */
      NS_ASSERTION(!mult->hdrs, "mult->hdrs should be null here");
      if (mult->hdrs)
        MimeHeaders_free(mult->hdrs);
      mult->hdrs = MimeHeaders_new();
      if (!mult->hdrs)
        return MIME_OUT_OF_MEMORY;
      if (obj->options && obj->options->state &&
          obj->options->state->partsToStrip.Length() > 0)
      {
        nsCAutoString newPart(mime_part_address(obj));
        MimeContainer *container = (MimeContainer*) obj; 
        newPart.Append('.');
        newPart.AppendInt(container->nchildren + 1);
        obj->options->state->strippingPart = PR_FALSE;
        // check if this is a sub-part of a part we're stripping.
        for (PRUint32 partIndex = 0; partIndex < obj->options->state->partsToStrip.Length(); partIndex++)
        {
          nsCString &curPartToStrip = obj->options->state->partsToStrip[partIndex];
          if (newPart.Find(curPartToStrip) == 0 && (newPart.Length() == curPartToStrip.Length() || newPart.CharAt(curPartToStrip.Length()) == '.'))
          {
            obj->options->state->strippingPart = PR_TRUE;
            if (partIndex < obj->options->state->detachToFiles.Length())
              obj->options->state->detachedFilePath = obj->options->state->detachToFiles[partIndex];
            break;
          }
        }
      }
    }
    
    // if stripping out attachments, write the boundary line. Otherwise, return
    // to ignore it.
    if (obj->options && obj->options->format_out == nsMimeOutput::nsMimeMessageAttach)
    {
      // Because MimeMultipart_parse_child_line strips out the 
      // the CRLF of the last line before the end of a part, we need to add that
      // back in here.
      if (endOfPart)
        MimeWriteAString(obj, NS_LITERAL_CSTRING(MSG_LINEBREAK));

      status = MimeObject_write(obj, line, length, PR_TRUE);
    }
    return 0;
  }

  /* Otherwise, this isn't a boundary string.  So do whatever it is we
   should do with this line (parse it as a header, feed it to the
   child part, ignore it, etc.) */

  switch (mult->state)
  {
    case MimeMultipartPreamble:
    case MimeMultipartEpilogue:
      /* Ignore this line. */
      break;

    case MimeMultipartHeaders:
    /* Parse this line as a header for the sub-part. */
    {
      status = MimeHeaders_parse_line(line, length, mult->hdrs);
      if (status < 0) return status;
      
      // If this line is blank, we're now done parsing headers, and should
      // now examine the content-type to create this "body" part.
      //
      if (*line == '\r' || *line == '\n')
      {
        if (obj->options && obj->options->state &&
            obj->options->state->strippingPart)
        {
          PRBool detachingPart = obj->options->state->detachedFilePath.Length() > 0;

          nsCAutoString fileName;
          fileName.Adopt(MimeHeaders_get_name(mult->hdrs, obj->options));
          if (detachingPart)
          {
            char *contentType = MimeHeaders_get(mult->hdrs, "Content-Type", PR_FALSE, PR_FALSE);
            if (contentType)
            {
              MimeWriteAString(obj, NS_LITERAL_CSTRING("Content-Type: "));
              MimeWriteAString(obj, nsDependentCString(contentType));
              PR_Free(contentType);
            }
            MimeWriteAString(obj, NS_LITERAL_CSTRING(MSG_LINEBREAK));
            MimeWriteAString(obj, NS_LITERAL_CSTRING("Content-Disposition: attachment; filename=\""));
            MimeWriteAString(obj, fileName);
            MimeWriteAString(obj, NS_LITERAL_CSTRING("\""MSG_LINEBREAK));
            MimeWriteAString(obj, NS_LITERAL_CSTRING("X-Mozilla-External-Attachment-URL: "));
            MimeWriteAString(obj, obj->options->state->detachedFilePath);
            MimeWriteAString(obj, NS_LITERAL_CSTRING(MSG_LINEBREAK));
            MimeWriteAString(obj, NS_LITERAL_CSTRING("X-Mozilla-Altered: AttachmentDetached; date=\""));
          }
          else
          {
            nsCAutoString header("Content-Type: text/x-moz-deleted; name=\"Deleted: ");
            header.Append(fileName);
            status = MimeWriteAString(obj, header);
            if (status < 0) 
              return status;
            status = MimeWriteAString(obj, NS_LITERAL_CSTRING("\""MSG_LINEBREAK"Content-Transfer-Encoding: 8bit"MSG_LINEBREAK));
            MimeWriteAString(obj, NS_LITERAL_CSTRING("Content-Disposition: inline; filename=\"Deleted: "));
            MimeWriteAString(obj, fileName);
            MimeWriteAString(obj, NS_LITERAL_CSTRING("\""MSG_LINEBREAK"X-Mozilla-Altered: AttachmentDeleted; date=\""));
          }
          nsCString result;
          char timeBuffer[128];
          PRExplodedTime now;
          PR_ExplodeTime(PR_Now(), PR_LocalTimeParameters, &now);
          PR_FormatTimeUSEnglish(timeBuffer, sizeof(timeBuffer),
                                 "%a %b %d %H:%M:%S %Y",
                                 &now);
          MimeWriteAString(obj, nsDependentCString(timeBuffer));
          MimeWriteAString(obj, NS_LITERAL_CSTRING("\""MSG_LINEBREAK));
          MimeWriteAString(obj, NS_LITERAL_CSTRING(MSG_LINEBREAK"You deleted an attachment from this message. The original MIME headers for the attachment were:"MSG_LINEBREAK));
          MimeHeaders_write_raw_headers(mult->hdrs, obj->options, PR_FALSE);
        }
        status = ((MimeMultipartClass *) obj->clazz)->create_child(obj);
        if (status < 0) return status;
        NS_ASSERTION(mult->state != MimeMultipartHeaders,
                     "mult->state shouldn't be MimeMultipartHeaders");

        // Ok, at this point, we need to examine the headers and see if there
        // is a special charset (i.e. non US-ASCII) for this message. If so, 
        // we need to tell the emitter that this is the case for use in in any
        // possible reply or forward operation.
        //
        PRBool isBody = PR_FALSE;
        PRBool isAlternative = PR_FALSE;

        MimeContainer *container = (MimeContainer*) obj; 
        // check if we're stripping the part of this newly created child.
        if (container->children && container->nchildren > 0)
        {
          MimeObject *kid = container->children[container->nchildren-1];
          if (kid->output_p)
            kid->output_p = !(obj->options && obj->options->state &&
                              obj->options->state->strippingPart);
        }
        if (container->children && container->nchildren == 1)
        {
          PRBool isAlternativeOrRelated = PR_FALSE;
          isBody = MimeObjectChildIsMessageBody(obj, &isAlternativeOrRelated);

          // MimeObjectChildIsMessageBody returns false for "multipart/related"
          // but we want to use the first part charset if that's a body.
          // I don't want to change the behavior of MimeObjectChildIsMessageBody
          // which is used by other places, so do the body check here.
          if (!isBody && 
              isAlternativeOrRelated &&
              mime_subclass_p(obj->clazz, (MimeObjectClass*) &mimeMultipartRelatedClass))
          {
            MimeObject *firstChild = container->children[0];
            char *disposition = MimeHeaders_get (firstChild->headers,
                                                 HEADER_CONTENT_DISPOSITION, 
                                                 PR_TRUE,
                                                 PR_FALSE);
            if (!disposition)
            {
              if (!PL_strcasecmp (firstChild->content_type, TEXT_PLAIN) ||
                  !PL_strcasecmp (firstChild->content_type, TEXT_HTML) ||
                  !PL_strcasecmp (firstChild->content_type, TEXT_MDL) ||
                  !PL_strcasecmp (firstChild->content_type, MULTIPART_ALTERNATIVE) ||
                  !PL_strcasecmp (firstChild->content_type, MULTIPART_RELATED) ||
                  !PL_strcasecmp (firstChild->content_type, MESSAGE_NEWS) ||
                  !PL_strcasecmp (firstChild->content_type, MESSAGE_RFC822))
                isBody = PR_TRUE;
            }
          }
        }
        else 
          isAlternative = mime_subclass_p(obj->clazz, (MimeObjectClass*) &mimeMultipartAlternativeClass);

        // If "multipart/alternative" or the first part is a message body
        // then we should check for a charset and notify the emitter  
        // if one exists.
        if (obj->options &&
            ((isAlternative && mult->state != MimeMultipartSkipPartLine) ||
             isBody || obj->options->notify_nested_bodies))
        {
          {
            char *ct = MimeHeaders_get(mult->hdrs, HEADER_CONTENT_TYPE, PR_FALSE, PR_FALSE);
            if (ct)
            {
              if (obj->options->notify_nested_bodies)
                mimeEmitterAddHeaderField(obj->options, HEADER_CONTENT_TYPE,
                                          ct);
             char *cset = MimeHeaders_get_parameter (ct, "charset", NULL, NULL);
             if (cset)
             {
                mimeEmitterUpdateCharacterSet(obj->options, cset);
                if (!(obj->options->override_charset))
                  // Also set this charset to msgWindow
                  SetMailCharacterSetToMsgWindow(obj, cset);
              }

              PR_FREEIF(ct);
              PR_FREEIF(cset);
            }
            // no content type means text/plain.
            else if (obj->options->notify_nested_bodies)
            {
              mimeEmitterAddHeaderField(obj->options, HEADER_CONTENT_TYPE,
                                        "text/plain");
            }
            if (obj->options->notify_nested_bodies && container->nchildren)
            {
              MimeObject *kid = container->children[container->nchildren-1];
              char *part_path = mime_part_address(kid);
              if (part_path)
              {
                mimeEmitterAddHeaderField(obj->options,
                                          "x-jsemitter-part-path",
                                          part_path);
                PR_Free(part_path);
              }
            }
          }
        }
      }
      break;
    }

    case MimeMultipartPartFirstLine:
      /* Hand this line off to the sub-part. */
      status = (((MimeMultipartClass *) obj->clazz)->parse_child_line(obj,
                                                  line, length, PR_TRUE));
      if (status < 0) return status;
      mult->state = MimeMultipartPartLine;
      break;

    case MimeMultipartPartLine:
      /* Hand this line off to the sub-part. */
      status = (((MimeMultipartClass *) obj->clazz)->parse_child_line(obj,
                  line, length, PR_FALSE));
      if (status < 0) return status;
      break;

    case MimeMultipartSkipPartLine:
      /* we are skipping that part, therefore just ignore the line */
      break;

    default:
      NS_ERROR("unexpected state in parse line");
      return -1;
  }

  if (obj->options &&
      obj->options->format_out == nsMimeOutput::nsMimeMessageAttach &&
      (!(obj->options->state && obj->options->state->strippingPart) &&
      mult->state != MimeMultipartPartLine))
      return MimeObject_write(obj, line, length, PR_FALSE);
  return 0;
}