msghdrviewsmimeoverlay.js

现在很火的邮件客户端软件thunderbird的源码

# -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
# ***** BEGIN LICENSE BLOCK *****
# Version: MPL 1.1/GPL 2.0/LGPL 2.1
#
# The contents of this file are subject to the Mozilla Public License Version
# 1.1 (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 mozilla.org Code.
#
# The Initial Developer of the Original Code is
# Netscape Communications Corporation.
# Portions created by the Initial Developer are Copyright (C) 1998-2001
# the Initial Developer. All Rights Reserved.
#
# Contributor(s):
#   Scott MacGreogr <[e-mail]>
#
# Alternatively, the contents of this file may be used under the terms of
# either the GNU General Public License Version 2 or later (the "GPL"), or
# the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
# in which case the provisions of the GPL or the LGPL are applicable instead
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# the provisions above, a recipient may use your version of this file under
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var gSignedUINode = null;
var gEncryptedUINode = null;
var gSMIMEContainer = null;
var gStatusBar = null;

var gEncryptedURIService = null;
var gMyLastEncryptedURI = null;

var gSMIMEBundle = null;
//var gBrandBundle; -- defined in mailWindow.js

// manipulates some globals from msgReadSMIMEOverlay.js

const nsICMSMessageErrors = Components.interfaces.nsICMSMessageErrors;

var smimeHeaderSink = 
{ 
  maxWantedNesting: function()
  {
    return 1;
  },

  signedStatus: function(aNestingLevel, aSignatureStatus, aSignerCert)
  {
    if (aNestingLevel > 1) {
      // we are not interested
      return;
    }

    gSignatureStatus = aSignatureStatus;
    gSignerCert = aSignerCert;

    gSMIMEContainer.collapsed = false;
    gSignedUINode.collapsed = false;
  
    switch (aSignatureStatus) {
      case nsICMSMessageErrors.SUCCESS:
        gSignedUINode.setAttribute("signed", "ok");
        gStatusBar.setAttribute("signed", "ok");
        break;

      case nsICMSMessageErrors.VERIFY_NOT_YET_ATTEMPTED:
        gSignedUINode.setAttribute("signed", "unknown");
        gStatusBar.setAttribute("signed", "unknown");
        break;

      case nsICMSMessageErrors.VERIFY_CERT_WITHOUT_ADDRESS:
      case nsICMSMessageErrors.VERIFY_HEADER_MISMATCH:
        gSignedUINode.setAttribute("signed", "mismatch");
        gStatusBar.setAttribute("signed", "mismatch");
        break;

      default:
        gSignedUINode.setAttribute("signed", "notok");
        gStatusBar.setAttribute("signed", "notok");
        break;
    }
  },

  encryptionStatus: function(aNestingLevel, aEncryptionStatus, aRecipientCert)
  {
    if (aNestingLevel > 1) {
      // we are not interested
      return;
    }

    gEncryptionStatus = aEncryptionStatus;
    gEncryptionCert = aRecipientCert;

    gSMIMEContainer.collapsed = false; 
    gEncryptedUINode.collapsed = false;

    if (nsICMSMessageErrors.SUCCESS == aEncryptionStatus)
    {
      gEncryptedUINode.setAttribute("encrypted", "ok");
      gStatusBar.setAttribute("encrypted", "ok");
    }
    else
    {
      gEncryptedUINode.setAttribute("encrypted", "notok");
      gStatusBar.setAttribute("encrypted", "notok");
    }
    
    if (gEncryptedURIService)
    {
      gMyLastEncryptedURI = GetLoadedMessage();
      gEncryptedURIService.rememberEncrypted(gMyLastEncryptedURI);
    }

    if (nsICMSMessageErrors.SUCCESS != aEncryptionStatus)
    {
      var brand = gBrandBundle.getString("brandShortName");
      var title = gSMIMEBundle.getString("CantDecryptTitle").replace(/%brand%/g,brand);
      var body = gSMIMEBundle.getString("CantDecryptBody").replace(/%brand%/g,brand);

      // insert our message
      msgWindow.displayHTMLInMessagePane(title,
       "<html>\n"+
       "<body bgcolor=\"#fafaee\">\n"+
       "<center><br><br><br>\n"+
       "<table>\n"+
       "<tr><td>\n"+
       "<center><strong><font size=\"+3\">\n"+
       title+"</font></center><br>\n"+
       body+"\n"+
       "</td></tr></table></center></body></html>", false);

    }
  },

  QueryInterface : function(iid)
  {
    if (iid.equals(Components.interfaces.nsIMsgSMIMEHeaderSink) || iid.equals(Components.interfaces.nsISupports))
      return this;
    throw Components.results.NS_NOINTERFACE;
  }
};

function forgetEncryptedURI()
{
  if (gMyLastEncryptedURI && gEncryptedURIService)
  {
    gEncryptedURIService.forgetEncrypted(gMyLastEncryptedURI);
    gMyLastEncryptedURI = null;
  }
}

function onSMIMEStartHeaders()
{
  gEncryptionStatus = -1;
  gSignatureStatus = -1;
  
  gSignerCert = null;
  gEncryptionCert = null;
  
  gSMIMEContainer.collapsed = true;

  gSignedUINode.collapsed = true;
  gSignedUINode.removeAttribute("signed");
  gStatusBar.removeAttribute("signed");

  gEncryptedUINode.collapsed = true;
  gEncryptedUINode.removeAttribute("encrypted");
  gStatusBar.removeAttribute("encrypted");

  forgetEncryptedURI();
}

function onSMIMEEndHeaders()
{}

function onSmartCardChange()
{
  // only reload encrypted windows
  if (gMyLastEncryptedURI && gEncryptionStatus != -1) {
    ReloadMessage();
  }
}

function msgHdrViewSMIMEOnLoad(event)
{
  window.crypto.enableSmartCardEvents = true;
  document.addEventListener("smartcard-insert", onSmartCardChange, false);
  document.addEventListener("smartcard-remove", onSmartCardChange, false);
  if (!gSMIMEBundle)
    gSMIMEBundle = document.getElementById("bundle_read_smime");

  // we want to register our security header sink as an opaque nsISupports
  // on the msgHdrSink used by mail.....
  msgWindow.msgHeaderSink.securityInfo = smimeHeaderSink;

  gSignedUINode = document.getElementById('signedHdrIcon');
  gEncryptedUINode = document.getElementById('encryptedHdrIcon');
  gSMIMEContainer = document.getElementById('smimeBox');
  gStatusBar = document.getElementById('status-bar');

  // add ourself to the list of message display listeners so we get notified when we are about to display a
  // message.
  var listener = {};
  listener.onStartHeaders = onSMIMEStartHeaders;
  listener.onEndHeaders = onSMIMEEndHeaders;
  gMessageListeners.push(listener);

  gEncryptedURIService = 
    Components.classes["@mozilla.org/messenger-smime/smime-encrypted-uris-service;1"]
    .getService(Components.interfaces.nsIEncryptedSMIMEURIsService);
}

function msgHdrViewSMIMEOnUnload(event)
{
  window.crypto.enableSmartCardEvents = false;
  document.removeEventListener("smartcard-insert", onSmartCardChange, false);
  document.removeEventListener("smartcard-remove", onSmartCardChange, false);
  forgetEncryptedURI();
}

function msgHdrViewSMIMEOnMessagePaneHide()
{
  gSMIMEContainer.collapsed = true;
  gSignedUINode.collapsed = true;
  gEncryptedUINode.collapsed = true;
}

function msgHdrViewSMIMEOnMessagePaneUnhide()
{
  if (gEncryptionStatus != -1 || gSignatureStatus != -1)
  {
    gSMIMEContainer.collapsed = false;

    if (gSignatureStatus != -1)
    {
      gSignedUINode.collapsed = false;
    }

    if (gEncryptionStatus != -1)
    {
      gEncryptedUINode.collapsed = false;
    }
  }
}

addEventListener('messagepane-loaded', msgHdrViewSMIMEOnLoad, true);
addEventListener('messagepane-unloaded', msgHdrViewSMIMEOnUnload, true);
addEventListener('messagepane-hide', msgHdrViewSMIMEOnMessagePaneHide, true);
addEventListener('messagepane-unhide', msgHdrViewSMIMEOnMessagePaneUnhide, true);