pjs/directory/xpcom/datasource/nsLDAPDataSource.js

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JavaScript

/* -*- 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 the mozilla.org LDAP RDF datasource.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 2000
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Dan Mosedale <dmose@mozilla.org>
* Brendan Eich <brendan@mozilla.org>
* Peter Van der Beken <peter.vanderbeken@pandora.be>
*
* 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
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
const DEBUG = true;
// core RDF schema
//
const RDF_NAMESPACE_URI = "http://www.w3.org/1999/02/22-rdf-syntax-ns#";
const NC_NAMESPACE_URI = "http://home.netscape.com/NC-rdf#";
const LDAPATTR_NAMESPACE_URI = "http://www.mozilla.org/LDAPATTR-rdf#";
// RDF-specific success nsresults
//
const NS_ERROR_RDF_BASE = 0x804f0000; // XXX is this right?
const NS_RDF_CURSOR_EMPTY = NS_ERROR_RDF_BASE + 1;
const NS_RDF_NO_VALUE = NS_ERROR_RDF_BASE + 2;
const NS_RDF_ASSERTION_ACCEPTED = Components.results.NS_OK;
const NS_RDF_ASSERTION_REJECTED = NS_ERROR_RDF_BASE + 3;
// Scope constants
//
const SCOPE_BASE = Components.interfaces.nsILDAPURL.SCOPE_BASE;
const SCOPE_ONELEVEL = Components.interfaces.nsILDAPURL.SCOPE_ONELEVEL;
const SCOPE_SUBTREE = Components.interfaces.nsILDAPURL.SCOPE_SUBTREE;
// Types of delegates
const MESSAGE = 1;
const FLAT_LIST = 2;
const RECURSIVE_LIST = 3;
// ArrayEnumerator courtesy of Brendan Eich <brendan@mozilla.org>
//
function ArrayEnumerator(array) {
this.array = array;
this.index = 0;
}
ArrayEnumerator.prototype = {
hasMoreElements: function() { return this.index < this.array.length; },
getNext: function () { return (this.index < this.array.length) ?
this.array[this.index++] : null; }
}
// nsISupportsArrayEnumerator
//
function nsISupportsArrayEnumerator(array) {
this.array = array;
this.index = 0;
}
nsISupportsArrayEnumerator.prototype = {
hasMoreElements: function() { return this.index < this.array.Count(); },
getNext: function () { return (this.index < this.array.Count()) ?
this.array.GetElementAt(this.index++) : null; }
}
/**
* getProxyOnUIThread returns a proxy to aObject on the main (UI) thread.
* We need this because the RDF service should only be used on the main
* thread. Moreover, the RDF classes aren't (marked as?) thread-safe, so
* any objects we create using the RDF service should only be used on the
* main thread.
*/
function getProxyOnUIThread(aObject, aInterface) {
var eventQSvc = Components.
classes["@mozilla.org/event-queue-service;1"].
getService(Components.interfaces.nsIEventQueueService);
var uiQueue = eventQSvc.
getSpecialEventQueue(Components.interfaces.
nsIEventQueueService.UI_THREAD_EVENT_QUEUE);
var proxyMgr = Components.
classes["@mozilla.org/xpcomproxy;1"].
getService(Components.interfaces.nsIProxyObjectManager);
return proxyMgr.getProxyForObject(uiQueue,
aInterface, aObject, 5);
// 5 == PROXY_ALWAYS | PROXY_SYNC
}
// the datasource object itself
//
const NS_LDAPDATASOURCE_CONTRACTID =
'@mozilla.org/rdf/datasource;1?name=ldap';
const NS_LDAPDATASOURCE_CID =
Components.ID('{8da18684-6486-4a7e-b261-35331f3e7163}');
function nsLDAPDataSource() {}
nsLDAPDataSource.prototype = {
// who is watching us; XXX ok to use new Array?
mObserverList: new Array(),
// RDF property constants.
//
// XXXdmose - can these can actually be statics (ie JS class
// properties rather than JS instance properties)? or would that
// make it hard for the datasource and/or component to be GCed?
//
kRDF_instanceOf: {},
kNC_DN: {},
kNC_child: {},
kNC_recursiveChild: {},
mRdfSvc: {},
// since we implement multiple interfaces, we have to provide QI
//
QueryInterface: function(iid) {
if (iid.equals(Components.interfaces.nsISupports) ||
iid.equals(Components.interfaces.nsIRDFDataSource) ||
iid.equals(Components.interfaces.nsIRDFRemoteDataSource) ||
iid.equals(Components.interfaces.nsIRDFObserver))
return this;
Components.returnCode = Components.results.NS_ERROR_NO_INTERFACE;
return null;
},
/**
* nsIRDFRemoteDataSource
*/
/**
* This value is <code>true</code> when the datasource has
* fully loaded itself.
*/
get loaded() {
debug("getter for loaded called\n");
// We're never fully loaded
return false;
},
/**
* Specify the URI for the data source: this is the prefix
* that will be used to register the data source in the
* data source registry.
* @param aURI the URI to load
*/
Init: function(aURI)
{
if (DEBUG) {
dump("Init() called with args: \n\t" + aURI + "\n\n");
}
// XXX - if this a "single-connection" datasource
// (ie non-anonymous to a specific server); we should figure
// that out here by noticing that there is a ; after "rdf:ldap", and
// that after that there is a cookie which happens to be an LDAP URL
// designating the connection. for now, we just assume that this will
// be a "universal" (anonymous to any & all servers) datasource.
//
// XXX rayw changed the delimiter char; it's not a ; any more.
// I think it might be ? now. He or waterson would know. The code
// that knows about this is somewhere in rdf, perhaps in the XUL
// template builder.
// get the RDF service
//
this.mRdfSvc = Components.
classes["@mozilla.org/rdf/rdf-service;1"].
getService(Components.interfaces.nsIRDFService);
// get some RDF Resources that we'll need
//
this.kRDF_instanceOf = this.mRdfSvc.GetResource(RDF_NAMESPACE_URI +
"instanceOf");
this.kNC_DN = this.mRdfSvc.GetResource(NC_NAMESPACE_URI + "DN");
this.kNC_child = this.mRdfSvc.GetResource(NC_NAMESPACE_URI + "child");
this.kNC_recursiveChild = this.mRdfSvc.GetResource(NC_NAMESPACE_URI +
"recursiveChild");
return;
},
/**
* Refresh the remote datasource, re-loading its contents
* from the URI.
*
* @param aBlocking If <code>true</code>, the call will block
* until the datasource has completely reloaded.
*/
Refresh: function(aBlocking)
{
if (DEBUG) {
dump("Refresh() called with args: \n\t" + aBlocking + "\n\n");
}
return;
},
/**
* Request that a data source write it's contents out to
* permanent storage, if applicable.
*/
Flush: function()
{
if (DEBUG) {
dump("Flush() called\n\n");
}
return;
},
/**
* nsIRDFDataSource
*/
/** Find an RDF resource that points to a given node over the
* specified arc & truth value
*
* @return NS_RDF_NO_VALUE if there is no source that leads
* to the target with the specified property.
*
* nsIRDFResource GetSource (in nsIRDFResource aProperty,
* in nsIRDFNode aTarget,
* in boolean aTruthValue);
*/
GetSource: function(aProperty, aTarget, aTruthValue) {
if (DEBUG) {
dump("GetSource() called with args: \n\t" + aProperty.Value +
"\n\t" + aTarget.Value + "\n\t" + aTruthValue + "\n\n");
}
Components.returnCode = NS_RDF_NO_VALUE;
return null;
},
/**
* Find all RDF resources that point to a given node over the
* specified arc & truth value
*
* @return NS_OK unless a catastrophic error occurs. If the
* method returns NS_OK, you may assume that nsISimpleEnumerator points
* to a valid (but possibly empty) cursor.
*
* nsISimpleEnumerator GetSources (in nsIRDFResource aProperty,
* in nsIRDFNode aTarget,
* in boolean aTruthValue);
*/
GetSources: function(aProperty, aTarget, aTruthValue) {
if (DEBUG) {
dump("GetSources() called with args: \n\t" + aProperty.Value +
"\n\t" + aTarget.Value + "\n\t" + aTruthValue + "\n\n");
}
return new ArrayEnumerator(new Array());
},
/**
* Find a child of that is related to the source by the given arc
* and truth value
*
* @return NS_RDF_NO_VALUE if there is no target accessible from the
* source via the specified property.
*
* nsIRDFNode GetTarget (in nsIRDFResource aSource,
* in nsIRDFResource aProperty,
* in boolean aTruthValue);
*/
GetTarget: function(aSource, aProperty, aTruthValue) {
if (DEBUG) {
dump("GetTarget() called with args: \n\t" + aSource.Value +
"\n\t" + aProperty.Value + "\n\t" + aTruthValue + "\n\n");
}
// We don't handle negative assertions.
// XXX Should we? Can we?
if (!aTruthValue) {
Components.returnCode = NS_RDF_NO_VALUE;
return null;
}
var delegate;
var enumerator;
if (aProperty.EqualsNode(this.kNC_child)
|| aProperty.EqualsNode(this.kNC_recursiveChild)) {
// Find a child or recursiveChild. Get the messagelist delegate
// (flat for child, recursive for recursiveChild) for aSource and
// return the first element of the list, if available.
var listType = (aProperty.EqualsNode(this.kNC_child) ?
"flat.messagelist.ldap" :
"recursive.messagelist.ldap");
try {
delegate = aSource.GetDelegate(listType,
Components.interfaces.nsISupportsArray);
}
catch (e) {
}
if (delegate != null) {
try {
var target = delegate.QueryElementAt(0,
Components.interfaces.nsIRDFNode);
return target;
}
catch (e) {
}
}
}
else if (aProperty.EqualsNode(this.kNC_DN)) {
// Find the DN arc. Get the message delegate for aSource
// and return the resource for the dn property of the message,
// if available.
try {
delegate = aSource.GetDelegate("message.ldap",
Components.interfaces.nsILDAPMessage);
}
catch (e) {
}
if (delegate != null) {
return this.mRdfSvc.GetResource(delegate.dn);
}
}
else {
// Find a different arc. See if we're looking for an LDAP attribute
// arc. If so, get the message delegate for aSource, if we find one
// get the attribute array for the specified LDAP attribute and
// return the first value if it isn't empty.
var refStart = aProperty.Value.indexOf("#");
if (aProperty.Value.slice(0, refStart + 1) ==
LDAPATTR_NAMESPACE_URI) {
try {
delegate = aSource.GetDelegate("message.ldap",
Components.interfaces.nsILDAPMessage);
}
catch (e) {
}
if (delegate != null) {
var attributeName = aProperty.Value.slice(refStart + 1);
enumerator = new ArrayEnumerator(this.getAttributeArray(
delegate, attributeName));
if (enumerator.hasMoreElements()) {
return enumerator.getNext();
}
}
}
}
// Found nothing.
Components.returnCode = NS_RDF_NO_VALUE;
return null;
},
/**
* Find all children of that are related to the source by the given arc
* arc and truth value.
*
* @return NS_OK unless a catastrophic error occurs. If the
* method returns NS_OK, you may assume that nsISimpleEnumerator points
* to a valid (but possibly empty) cursor.
*
* nsISimpleEnumerator GetTargets (in nsIRDFResource aSource,
* in nsIRDFResource aProperty,
* in boolean aTruthValue);
*/
GetTargets: function(aSource, aProperty, aTruthValue) {
if (DEBUG) {
dump("GetTargets() called with args: \n\t" + aSource.Value +
"\n\t" + aProperty.Value + "\n\t" + aTruthValue + "\n\n");
}
// We don't handle negative assertions.
// XXX Should we? Can we?
if (!aTruthValue) {
return new ArrayEnumerator(new Array());
}
var delegate;
if (aProperty.EqualsNode(this.kNC_child)
|| aProperty.EqualsNode(this.kNC_recursiveChild)) {
// Find children or recursiveChildren. Get the messagelist delegate
// (flat for child, recursive for recursiveChild) for aSource and
// return an enumerator for the list, if available.
var listType = (aProperty.EqualsNode(this.kNC_child) ?
"flat.messagelist.ldap" :
"recursive.messagelist.ldap");
try {
delegate = aSource.GetDelegate(listType,
Components.interfaces.nsISupportsArray);
}
catch (e) {
}
if (delegate != null) {
return new nsISupportsArrayEnumerator(delegate);
}
}
else if (aProperty.EqualsNode(this.kNC_DN)) {
// Find the DN arc. Get the message delegate for aSource
// and return the resource for the dn property of the message,
// if available.
try {
delegate = aSource.GetDelegate("message.ldap",
Components.interfaces.nsILDAPMessage);
}
catch (e) {
}
if (delegate != null) {
return this.mRdfSvc.GetResource(delegate.dn);
}
}
else {
// Find a different arc. See if we're looking for an LDAP attribute
// arc. If so, get the message delegate for aSource, if we find one
// get the attribute array for the specified LDAP attribute and
// an enumerator for the array.
var refStart = aProperty.Value.indexOf("#");
if (aProperty.Value.slice(0, refStart + 1) ==
LDAPATTR_NAMESPACE_URI) {
try {
delegate = aSource.GetDelegate("message.ldap",
Components.interfaces.nsILDAPMessage);
}
catch (e) {
}
if (delegate != null) {
var attributeName = aProperty.Value.slice(refStart + 1);
return new ArrayEnumerator(
this.getAttributeArray(delegate, attributeName));
}
}
}
// Found nothing, return enumerator for empty array.
return new ArrayEnumerator(new Array());
},
/**
* Add an assertion to the graph.
*
* void Assert (in nsIRDFResource aSource,
* in nsIRDFResource aProperty,
* in nsIRDFNode aTarget,
* in boolean aTruthValue);
*/
Assert: function(aSource, aProperty, aTarget, aTruthValue) {
if (DEBUG) {
dump("Assert() called with args: \n\t" + aSource.Value +
"\n\t" + aProperty.Value + "\n\t" + aTarget.Value +
"\n\t" + aTruthValue + "\n\n");
}
},
/**
* Remove an assertion from the graph.
*
* void Unassert (in nsIRDFResource aSource,
* in nsIRDFResource aProperty,
* in nsIRDFNode aTarget);
*/
Unassert: function(aSource, aProperty, aTarget) {
if (DEBUG) {
dump("Unassert() called with args: \n\t" + aSource.Value +
"\n\t" + aProperty.Value + "\n\t" + aTarget.Value + "\n\n");
}
},
/**
* Change an assertion from
*
* [aSource]--[aProperty]-->[aOldTarget]
*
* to
*
* [aSource]--[aProperty]-->[aNewTarget]
*
* void Change (in nsIRDFResource aSource,
* in nsIRDFResource aProperty,
* in nsIRDFNode aOldTarget,
* in nsIRDFNode aNewTarget);
*/
Change: function(aSource, aProperty, aOldTarget, aNewTarget) {
if (DEBUG) {
dump("Change() called with args: \n\t" + aSource.Value +
"\n\t" + aProperty.Value + "\n\t" + aOldTarget.Value +
"\n\t" + aNewTarget.Value + "\n\n");
}
},
/**
* 'Move' an assertion from
*
* [aOldSource]--[aProperty]-->[aTarget]
*
* to
*
* [aNewSource]--[aProperty]-->[aTarget]
*
* void Move (in nsIRDFResource aOldSource,
* in nsIRDFResource aNewSource,
* in nsIRDFResource aProperty,
* in nsIRDFNode aTarget);
*/
Move: function(aOldSource, aNewSource, aProperty, aTarget) {
if (DEBUG) {
dump("Move() called with args: \n\t" + aOldSource.Value +
"\n\t" + aNewSource.Value + "\n\t" + aProperty.Value +
"\n\t" + aTarget.Value + "\n\n");
}
},
/**
* Query whether an assertion exists in this graph.
*
* boolean HasAssertion(in nsIRDFResource aSource,
* in nsIRDFResource aProperty,
* in nsIRDFNode aTarget,
* in boolean aTruthValue);
*/
HasAssertion: function(aSource, aProperty, aTarget, aTruthValue) {
// The datasource doesn't currently use any sort of standard
// RDF containers.
if (aProperty.EqualsNode(this.kRDF_instanceOf)) {
return false;
}
if (DEBUG) {
dump("HasAssertion() called with args: \n\t" + aSource.Value +
"\n\t" + aProperty.Value + "\n\t" + aTarget.Value + "\n\t" +
aTruthValue + "\n\n");
}
// We don't handle negative assertions.
// XXX Should we? Can we?
if (!aTruthValue) {
return false;
}
var delegate;
if (aProperty.EqualsNode(this.kNC_child)
|| aProperty.EqualsNode(this.kNC_recursiveChild)) {
// Find out if aTarget is in the children or recursiveChildren of
// aSource. Get the messagelist delegate (flat for child, recursive
// for recursiveChild) for aSource.
var listType = (aProperty.EqualsNode(this.kNC_child) ?
"flat.messagelist.ldap" :
"recursive.messagelist.ldap");
try {
delegate = aSource.GetDelegate(listType,
Components.interfaces.nsISupportsArray);
}
catch (e) {
}
if (delegate != null) {
// We have a delegate message list, loop through it and return
// true if the target is in the list.
var enumerator = delegate.Enumerate();
var done = false;
try {
enumerator.isDone();
}
catch (e) {
done = true;
}
while(!done) {
var resource = enumerator.currentItem().QueryInterface(
Components.interfaces.nsIRDFResource);
if (resource.Value == aTarget.Value) {
return true;
}
try {
enumerator.next();
}
catch (e) {
done = true;
}
}
}
}
else if (aProperty.EqualsNode(this.kNC_DN)) {
// Find the DN arc. Get the message delegate for aSource
// and return the resource for the dn property of the message,
// if available.
try {
delegate = aSource.GetDelegate("message.ldap",
Components.interfaces.nsILDAPMessage);
}
catch (e) {
}
if (delegate != null) {
return (delegate.dn == aTarget.Value);
}
}
else {
// Find a different arc. See if we're looking for an LDAP attribute
// arc. If so, get the message delegate for aSource, if we find one
// get the attribute array for the specified LDAP attribute and
// an enumerator for the array.
var refStart = aProperty.Value.indexOf("#");
if (aProperty.Value.slice(0, refStart + 1) ==
LDAPATTR_NAMESPACE_URI) {
try {
delegate = aSource.GetDelegate("message.ldap",
Components.interfaces.nsILDAPMessage);
}
catch (e) {
}
if (delegate != null) {
var attributeName = aProperty.Value.slice(refStart + 1);
var attributeArray = this.getAttributeArray(delegate,
attributeName);
var attributes = new ArrayEnumerator(attributeArray);
while (attributes.hasMoreElements()) {
var attribute = attributes.getNext();
if (attribute.Value == aTarget.Value) {
return true;
}
}
}
}
}
// if we haven't returned true yet, there's nothing here
//
return false;
},
/**
* Add an observer to this data source. If the datasource
* supports observers, the datasource source should hold a strong
* reference to the observer.
*
* void AddObserver(in nsIRDFObserver aObserver);
*/
AddObserver: function(aObserver) {
if (DEBUG) {
dump("AddObserver() called\n\n");
}
// We need to proxy our observers on the main (UI) thread, because
// the RDF code wants to run on the main thread.
this.mObserverList.push(getProxyOnUIThread(aObserver,
Components.interfaces.nsIRDFObserver));
},
/**
* Remove an observer from this data source.
*
* void RemoveObserver (in nsIRDFObserver aObserver);
*/
RemoveObserver: function(aObserver) {
if (DEBUG) {
dump("RemoveObserver() called" + "\n\n");
}
var iter = new ArrayEnumerator(this.mObserverList);
var nextObserver;
while ((nextObserver = iter.getNext())) {
if (nextObserver == aObserver) {
splice(iter.index, 1);
}
}
},
/**
* Get a cursor to iterate over all the arcs that point into a node.
*
* @return NS_OK unless a catastrophic error occurs. If the method
* returns NS_OK, you may assume that labels points to a valid (but
* possible empty) nsISimpleEnumerator object.
*
* nsISimpleEnumerator ArcLabelsIn (in nsIRDFNode aNode);
*/
ArcLabelsIn: function(aNode) {
if (DEBUG) {
dump("ArcLabelsIn() called with args: \n\t" + aNode.Value +
"\n\n");
}
return new ArrayEnumerator(new Array());
},
/**
* Get a cursor to iterate over all the arcs that originate in
* a resource.
*
* @return NS_OK unless a catastrophic error occurs. If the method
* returns NS_OK, you may assume that labels points to a valid (but
* possible empty) nsISimpleEnumerator object.
*
* nsISimpleEnumerator ArcLabelsOut(in nsIRDFResource aSource);
*/
ArcLabelsOut: function(aSource)
{
if (DEBUG) {
dump("ArcLabelsOut() called with args: \n\t" + aSource.Value +
"\n\n");
}
return new ArrayEnumerator(new Array());
},
/**
* Returns true if the specified node is pointed to by the specified arc.
* Equivalent to enumerating ArcLabelsIn and comparing for the specified
* arc.
*
* boolean hasArcIn (in nsIRDFNode aNode,
* in nsIRDFResource aArc);
*/
hasArcIn: function(aNode, aArc)
{
if (DEBUG) {
dump("hasArcIn() called with args: \n\t" + aNode.Value +
"\n\t" + aArc.Value + "\n\n");
}
return false;
},
/**
* Returns true if the specified node has the specified outward arc.
* Equivalent to enumerating ArcLabelsOut and comparing for the specified
* arc.
*
* boolean hasArcOut (in nsIRDFResource aSource,
* in nsIRDFResource aArc);
*/
hasArcOut: function(aSource, aArc)
{
if (DEBUG) {
dump("hasArcOut() called with args: \n\t" + aSource.Value +
"\n\t" + aArc.Value + "\n\n");
}
var delegate;
if (aArc.EqualsNode(this.kNC_child)
|| aArc.EqualsNode(this.kNC_recursiveChild)) {
// Find children or recursiveChildren. Get the messagelist delegate
// (flat for child, recursive for recursiveChild) for aSource and
// return true if we have one.
var listType = (aArc.EqualsNode(this.kNC_child) ?
"flat.messagelist.ldap" :
"recursive.messagelist.ldap");
try {
delegate = aSource.GetDelegate(listType,
Components.interfaces.nsISupportsArray);
}
catch (e) {
}
if (delegate != null) {
return true;
}
}
else if (aArc.EqualsNode(this.kNC_DN)) {
// Find the DN arc. Get the message delegate for aSource
// and return true if we have a delegate and its dn
// attribute is non-null.
try {
delegate = aSource.GetDelegate("message.ldap",
Components.interfaces.nsILDAPMessage);
}
catch (e) {
}
return (delegate != null);
}
// Find a different arc. See if we're looking for an LDAP attribute
// arc. If so, get the message delegate for aSource, if we find one
// get the attribute array for the specified LDAP attribute and
// return true if it contains at least one value.
var refStart = aArc.Value.indexOf("#");
if (aArc.Value.slice(0, refStart + 1) == LDAPATTR_NAMESPACE_URI) {
try {
delegate = aSource.GetDelegate("message.ldap",
Components.interfaces.nsILDAPMessage);
}
catch (e) {
}
if (delegate != null) {
var attributeName = aArc.Value.slice(refStart + 1);
var attributeArray = this.getAttributeArray(delegate,
attributeName);
if (attributeArray.length > 0) {
return true;
}
}
}
return false;
},
/**
* Private functions
*/
onAssert: function(aDataSource, aSource, aProperty, aTarget)
{
if (DEBUG) {
dump("OnAssert() called with args: \n\t" + aSource.Value +
"\n\t" + aProperty.Value + "\n\t" + aTarget.Value + "\n\n");
}
var iter = new ArrayEnumerator(this.mObserverList);
var nextObserver;
while ((nextObserver = iter.getNext()) != null) {
nextObserver.onAssert(this, aSource, aProperty, aTarget);
}
},
onUnassert: function(aDataSource, aSource, aProperty, aTarget)
{
if (DEBUG) {
dump("onUnassert() called with args: \n\t" + aSource.Value +
"\n\t" + aProperty.Value + "\n\t" + aTarget.Value + "\n\n");
}
var iter = new ArrayEnumerator(this.mObserverList);
var nextObserver;
while ((nextObserver = iter.getNext()) != null) {
nextObserver.onUnassert(this, aSource, aProperty, aTarget);
}
},
onChange: function(aDataSource, aSource, aProperty, aOldTarget, aNewTarget)
{
if (DEBUG) {
dump("onChange() called with args: \n\t" + aSource.Value +
"\n\t" + aProperty.Value + "\n\t" + aOldTarget.Value +
"\n\t" + aNewTarget.Value + "\n\n");
}
var iter = new ArrayEnumerator(this.mObserverList);
var nextObserver;
while ((nextObserver = iter.getNext()) != null) {
nextObserver.onChange(this, aSource, aProperty, aOldTarget, aNewTarget);
}
},
onBeginUpdateBatch: function()
{
if (DEBUG) {
dump("onBeginUpdateBatch() called\n\n");
}
var iter = new ArrayEnumerator(this.mObserverList);
var nextObserver;
while ((nextObserver = iter.getNext()) != null) {
nextObserver.onBeginUpdateBatch(this);
}
},
onEndUpdateBatch: function()
{
if (DEBUG) {
dump("onEndUpdateBatch() called\n\n");
}
var iter = new ArrayEnumerator(this.mObserverList);
var nextObserver;
while ((nextObserver = iter.getNext()) != null) {
nextObserver.onEndUpdateBatch(this);
}
},
/**
* Fills an array with the RDF nodes for the values of an attribute
* out of a nsLDAPMessage.
*/
getAttributeArray: function(aMessage, aAttributeName) {
var resultArray = new Array();
var valuesCount = {};
try {
var values = aMessage.getValues(aAttributeName, valuesCount);
for (var j = 0; j < valuesCount.value; j++) {
var attributeValue = this.mRdfSvc.GetLiteral(values[j]);
resultArray.push(attributeValue);
}
}
catch (e) {
// Error or the attribute was not there.
// XXX Do we need to do something about the real errors?
// XXX Just returning empty array for now.
}
return resultArray;
}
}
// the nsILDAPMessage associated with a given resource
//
const NS_LDAPMESSAGERDFDELEGATEFACTORY_CONTRACTID =
'@mozilla.org/rdf/delegate-factory;1?key='+"message.ldap"+'&scheme=ldap'
const NS_LDAPFLATMESSAGELISTRDFDELEGATEFACTORY_CONTRACTID =
'@mozilla.org/rdf/delegate-factory;1?key=flat.messagelist.ldap&scheme=ldap'
const NS_LDAPRECURSIVEMESSAGELISTRDFDELEGATEFACTORY_CONTRACTID =
'@mozilla.org/rdf/delegate-factory;1?key=recursive.messagelist.ldap&scheme=ldap'
const NS_LDAPMESSAGERDFDELEGATEFACTORY_CID =
Components.ID('{4b6fb566-1dd2-11b2-a1a9-889a3f852b0b}');
function nsLDAPMessageRDFDelegateFactory() {}
nsLDAPMessageRDFDelegateFactory.prototype =
{
mRdfSvc: {},
mLDAPSvc: {},
mLDAPDataSource: {},
kNC_child: {},
kNC_recursiveChild: {},
mConnection: {}, // connection to the LDAP server
mOperation: {}, // current LDAP operation
mMessagesHash: {}, // hash with the currently known messages
// (hashed on URI)
mMessagesListHash: {},
mInProgressHash: {},
kInited: -1,
Init: function() {
if (this.kInited == -1) {
this.kInited = 0;
// get the RDF service
//
this.mRdfSvc = Components.
classes["@mozilla.org/rdf/rdf-service;1"].
getService(Components.interfaces.nsIRDFService);
this.mLDAPSvc = Components.
classes["@mozilla.org/network/ldap-service;1"].
getService(Components.interfaces.nsILDAPService);
this.mLDAPDataSource = this.mRdfSvc.GetDataSource("rdf:ldap").
QueryInterface(Components.interfaces.nsIRDFObserver);
// get some RDF Resources that we'll need
//
this.kNC_child = this.mRdfSvc.GetResource(NC_NAMESPACE_URI +
"child");
this.kNC_recursiveChild = this.mRdfSvc.GetResource(NC_NAMESPACE_URI +
"recursiveChild");
}
},
QueryInterface: function(iid) {
if (DEBUG) {
dump("QueryInterface called\n\n");
}
if (iid.equals(Components.interfaces.nsISupports) ||
iid.equals(Components.interfaces.nsIRDFDelegateFactory))
return this;
Components.returnCode = Components.results.NS_ERROR_NO_INTERFACE;
return null;
},
// from nsIRDFDelegateFactory:
//
// Create a delegate for the specified RDF resource.
//
// The created delegate should forward AddRef() and Release()
// calls to the aOuter object.
//
// void CreateDelegate(in nsIRDFResource aOuter,
// in string aKey,
// in nsIIDRef aIID,
// [retval, iid_is(aIID)] out nsQIResult aResult);
CreateDelegate: function (aOuter, aKey, aIID) {
function generateGetTargetsBoundCallback() {
function getTargetsBoundCallback() {
}
getTargetsBoundCallback.prototype.QueryInterface =
function(iid) {
if (iid.equals(Components.interfaces.nsISupports) ||
iid.equals(Components.interfaces.nsILDAPMessageListener))
return this;
Components.returnCode = Components.results.NS_ERROR_NO_INTERFACE;
return null;
}
getTargetsBoundCallback.prototype.onLDAPMessage =
function(aMessage) {
if (DEBUG) {
dump("getTargetsBoundCallback.onLDAPMessage()" +
"called with scope: \n\t" +
aOuter.Value + "\n\n");
}
// XXX how do we deal with this in release builds?
// XXX deal with already bound case
//
if (aMessage.type != aMessage.RES_BIND) {
dump("bind failed\n");
delete callerObject.mInProgressHash[queryURL.spec];
return;
}
// kick off a search
//
var searchOp = Components.classes[
"@mozilla.org/network/ldap-operation;1"].
createInstance(Components.interfaces.
nsILDAPOperation);
// XXX err handling
searchOp.init(connection,
generateGetTargetsSearchCallback());
// XXX err handling (also for url. accessors)
// XXX constipate this
// XXX real timeout
searchOp.searchExt(queryURL.dn, queryURL.scope,
queryURL.filter, 0, new Array(),
0, -1);
}
getTargetsBoundCallback.prototype.onLDAPInit =
function(aConn, aStatus) {
if (DEBUG) {
dump("getTargetsBoundCallback.onLDAPInit()" +
" called with status of " + aStatus + "\n\n");
}
// get and initialize an operation object
//
var operation = Components.classes
["@mozilla.org/network/ldap-operation;1"].
createInstance(Components.interfaces.nsILDAPOperation);
operation.init(connection,
getProxyOnUIThread(this, Components.interfaces.
nsILDAPMessageListener));
caller.mInProgressHash[aOuter.Value] = 1;
// bind to the server. we'll get a callback when this
// finishes. XXX handle a password
//
operation.simpleBind(null);
}
return getProxyOnUIThread(new getTargetsBoundCallback(),
Components.interfaces.nsILDAPMessageListener);
}
function generateGetTargetsSearchCallback() {
function getTargetsSearchCallback() {
}
getTargetsSearchCallback.prototype.QueryInterface = function(iid) {
if (iid.equals(Components.interfaces.nsISupports) ||
iid.equals(Components.interfaces.nsILDAPMessageListener))
return this;
Components.returnCode = Components.results.NS_ERROR_NO_INTERFACE;
return null;
};
getTargetsSearchCallback.prototype.onLDAPMessage =
function(aMessage) {
if (DEBUG) {
dump("getTargetsSearchCallback() called with message" +
" of type " + aMessage.type + "\n\n");
}
var listHash = caller.mMessagesListHash;
if (aMessage.type == aMessage.RES_SEARCH_ENTRY) {
if (DEBUG) {
dump("getTargetsSearchCallback() called with " +
"message " + aMessage.dn + " for " +
aOuter.Value + "\n\n");
}
// Create a resource for the message we just got.
// This is a single entry for which we'll cache the
// nsILDAPMessage. If we got this as a result of a
// "list" query we'll also add it to the result array.
var newURL = Components.classes["@mozilla.org/network/ldap-url;1"]
.createInstance(Components.interfaces.nsILDAPURL);
newURL.spec = queryURL.spec;
newURL.dn = aMessage.dn;
newURL.scope = SCOPE_BASE;
newURL.filter = "(objectClass=*)";
var newResource =
caller.mRdfSvc.GetResource(newURL.spec);
// Add the LDAP message for the new resource in our
// messages hashlist. We do this before adding it to
// a query result array (when applicable), so that
// when we onAssert this as a result for a query
// returning multiple results, it is already cached.
// If we wouldn't do this here, we'd start another
// query for this resource.
var messageHash = caller.mMessagesHash;
if (!messageHash.hasOwnProperty(newURL.spec)) {
messageHash[newURL.spec] = aMessage;
}
if (queryType == MESSAGE) {
// XXX - we need to onAssert this resource. However,
// we need to know somehow what the caller wanted
// to use this delegate for, so that we can limit
// the onAssert to what was asked for. This might be
// tricky, as we'd need to keep track of multiple
// "questions" coming in while the LDAP server
// hasn't responded yet.
}
else {
// Add the LDAP message to the result array for
// the query resource and onAssert the result
// as a child of the query resource.
var queryResource =
caller.mRdfSvc.GetResource(queryURL.spec);
if (!listHash.hasOwnProperty(queryURL.spec)) {
// No entry for the query resource in the
// results hashlist, let's create one.
listHash[queryURL.spec] = Components.classes
["@mozilla.org/supports-array;1"].
createInstance(
Components.interfaces.nsISupportsArray);
}
listHash[queryURL.spec].AppendElement(newResource);
if (queryType == FLAT_LIST) {
caller.mLDAPDataSource.onAssert(
caller.mLDAPDataSource, aOuter,
caller.kNC_child, newResource);
}
else if (queryType == RECURSIVE_LIST) {
caller.mLDAPDataSource.onAssert(
caller.mLDAPDataSource, queryResource,
caller.kNC_child, newResource);
caller.mLDAPDataSource.onAssert(
caller.mLDAPDataSource, aOuter,
caller.kNC_recursiveChild, newResource);
}
}
}
else if (aMessage.type == aMessage.RES_SEARCH_RESULT) {
// We got all the results for the query.
// If we were looking for a list, let's check if we
// have an entry for the query resource in the result's
// hashlist. If we don't, add an empty array to help
// performance, otherwise we'll keep requerying for this
// query resource.
if (queryType == FLAT_LIST || queryType == RECURSIVE_LIST) {
if (!listHash.hasOwnProperty(queryURL.spec)) {
// No entry for the query resource in the
// results hashlist, let's create an empty one.
listHash[queryURL.spec] = Components.classes
["@mozilla.org/supports-array;1"].
createInstance(
Components.interfaces.nsISupportsArray);
}
}
delete caller.mInProgressHash[queryURL.spec];
}
}
return getProxyOnUIThread(new getTargetsSearchCallback(),
Components.interfaces.nsILDAPMessageListener);
}
// end of closure decls; the CreateDelegate code proper begins below
// XXX - We need to keep track of queries that are in progress for a
// message too (cf. mInProgressHash for messagelist's).
//
if (DEBUG) {
dump("GetDelegate() called with args: \n\t" + aOuter.Value +
"\n\t" + aKey + "\n\t" + aIID + "\n\n");
}
var caller = this;
var queryURL;
var queryType;
if (aKey == "message.ldap") {
queryType = MESSAGE;
}
else if (aKey == "flat.messagelist.ldap") {
queryType = FLAT_LIST;
}
else if (aKey == "recursive.messagelist.ldap") {
queryType = RECURSIVE_LIST;
}
switch (queryType) {
case MESSAGE:
if (this.mMessagesHash.hasOwnProperty(aOuter.Value)) {
return (this.mMessagesHash[aOuter.Value].QueryInterface(aIID));
}
break;
case FLAT_LIST:
if (this.mMessagesListHash.hasOwnProperty(aOuter.Value)) {
return (this.mMessagesListHash[aOuter.Value].QueryInterface(aIID));
}
break;
case RECURSIVE_LIST:
queryURL = Components.classes["@mozilla.org/network/ldap-url;1"]
.createInstance(Components.interfaces.nsILDAPURL);
queryURL.spec = aOuter.Value;
if (queryURL.scope == SCOPE_BASE) {
// Retarget the URL, asking for recursive children on
// a base URL should descend, so we do a one-level search.
queryURL.scope = SCOPE_ONELEVEL;
}
if (this.mMessagesListHash.hasOwnProperty(queryURL.spec)) {
return (this.mMessagesListHash[queryURL.spec].QueryInterface(aIID));
}
break;
}
if (queryURL == null) {
queryURL = Components.classes["@mozilla.org/network/ldap-url;1"]
.createInstance(Components.interfaces.nsILDAPURL);
queryURL.spec = aOuter.Value;
}
// make sure that this if this URL is for a messagelist, it
// represents something other than a base search
//
if ((queryType == FLAT_LIST) && (queryURL.scope == SCOPE_BASE)) {
if (DEBUG) {
dump("Early return, asking for a list of children for an " +
"URL with a BASE scope\n\n");
}
throw Components.results.NS_ERROR_FAILURE;
}
if (!this.mInProgressHash.hasOwnProperty(queryURL.spec)) {
this.Init();
// XXX - not sure what this should be
var key = queryURL.host + ":" + queryURL.port;
// Get the LDAP service and request a connection to the server from
// the service
var server;
try {
server = this.mLDAPSvc.getServer(key);
}
catch (e) {
}
if (!server) {
// Create a server object and let the service know about it
// XXX - not sure if I initialize enough here
server = Components.classes
["@mozilla.org/network/ldap-server;1"].
createInstance(Components.interfaces.nsILDAPServer);
server.key = key;
server.url = queryURL;
this.mLDAPSvc.addServer(server);
}
// Mark this URL as being in progress, to avoid requerying for the
// same URL
this.mInProgressHash[queryURL.spec] = 1;
// get a connection object
//
var connection = Components.classes
["@mozilla.org/network/ldap-connection;1"].
createInstance(Components.interfaces.nsILDAPConnection);
connection.init(queryURL.host, queryURL.port, null,
generateGetTargetsBoundCallback(), null,
Components.interfaces.nsILDAPConnection.VERSION3);
// XXXdmose - in this case, we almost certainly shouldn't be
// falling through to an error case, but instead returning
// something reasonable, since this is actually a success
// condition
//
debug("falling through!\n");
}
throw Components.results.NS_ERROR_FAILURE;
}
}
// the nsILDAPURL associated with a given resource
//
const NS_LDAPURLRDFDELEGATEFACTORY_CONTRACTID =
'@mozilla.org/rdf/delegate-factory/url.ldap;1';
const NS_LDAPURLRDFDELEGATEFACTORY_CID =
Components.ID('b6048700-1dd1-11b2-ae88-a5e18bb1f25e');
function nsLDAPURLRDFDelegateFactory() {}
nsLDAPURLRDFDelegateFactory.prototype =
{
// from nsIRDFDelegateFactory:
//
// Create a delegate for the specified RDF resource.
//
// The created delegate should forward AddRef() and Release()
// calls to the aOuter object.
//
// void CreateDelegate(in nsIRDFResource aOuter,
// in string aKey,
// in nsIIDRef aIID,
// [retval, iid_is(aIID)] out nsQIResult aResult);
CreateDelegate: function (aOuter, aKey, aIID) {
}
}
// the nsILDAPConnection associated with a given resource
//
const NS_LDAPCONNECTIONRDFDELEGATEFACTORY_CONTRACTID =
'@mozilla.org/rdf/delegate-factory/connection.ldap;1';
const NS_LDAPCONNECTIONRDFDELEGATEFACTORY_CID =
Components.ID('57075fc6-1dd2-11b2-9df5-dbb9111d1b38');
function nsLDAPConnectionRDFDelegateFactory() {}
nsLDAPConnectionRDFDelegateFactory.prototype =
{
// from nsIRDFDelegateFactory:
//
// Create a delegate for the specified RDF resource.
//
// The created delegate should forward AddRef() and Release()
// calls to the aOuter object.
//
// void CreateDelegate(in nsIRDFResource aOuter,
// in string aKey,
// in nsIIDRef aIID,
// [retval, iid_is(aIID)] out nsQIResult aResult);
CreateDelegate: function (aOuter, aKey, aIID) {
}
}
var Datasource = null;
var MessageDelegateFactory = null;
// nsLDAPDataSource Module (for XPCOM registration)
//
var nsLDAPDataSourceModule = {
registerSelf: function (compMgr, fileSpec, location, type) {
debug("*** Registering LDAP datasource components" +
" (all right -- a JavaScript module!)\n");
compMgr = compMgr.QueryInterface(Components.interfaces.nsIComponentRegistrar);
compMgr.registerFactoryLocation(
NS_LDAPDATASOURCE_CID,
'LDAP RDF DataSource',
NS_LDAPDATASOURCE_CONTRACTID,
fileSpec, location,
type);
compMgr.registerFactoryLocation(
NS_LDAPMESSAGERDFDELEGATEFACTORY_CID,
'LDAP Message RDF Delegate',
NS_LDAPMESSAGERDFDELEGATEFACTORY_CONTRACTID,
fileSpec, location,
type);
compMgr.registerFactoryLocation(
NS_LDAPMESSAGERDFDELEGATEFACTORY_CID,
'LDAP Flat MessageList RDF Delegate',
NS_LDAPFLATMESSAGELISTRDFDELEGATEFACTORY_CONTRACTID,
fileSpec, location,
type);
compMgr.registerFactoryLocation(
NS_LDAPMESSAGERDFDELEGATEFACTORY_CID,
'LDAP Recursive MessageList RDF Delegate',
NS_LDAPRECURSIVEMESSAGELISTRDFDELEGATEFACTORY_CONTRACTID,
fileSpec, location,
type);
compMgr.registerFactoryLocation(
NS_LDAPURLRDFDELEGATEFACTORY_CID,
'LDAP URL RDF Delegate',
NS_LDAPURLRDFDELEGATEFACTORY_CONTRACTID,
fileSpec, location,
type);
},
getClassObject: function(compMgr, cid, iid) {
if (!iid.equals(Components.interfaces.nsIFactory)) {
throw Components.results.NS_ERROR_NOT_IMPLEMENTED;
}
if (cid.equals(NS_LDAPDATASOURCE_CID))
return this.nsLDAPDataSourceFactory;
else if (cid.equals(NS_LDAPMESSAGERDFDELEGATEFACTORY_CID))
return this.nsLDAPMessageRDFDelegateFactoryFactory;
else if (cid.equals(NS_LDAPURLRDFDELEGATEFACTORY_CID))
return this.nsLDAPURLRDFDelegateFactoryFactory;
throw Components.results.NS_ERROR_NO_INTERFACE;
},
nsLDAPDataSourceFactory: {
createInstance: function(outer, iid) {
if (outer != null)
throw Components.results.NS_ERROR_NO_AGGREGATION;
if (Datasource == null) {
Datasource = new nsLDAPDataSource();
}
return Datasource.QueryInterface(iid);
}
},
nsLDAPMessageRDFDelegateFactoryFactory: {
createInstance: function(outer, iid) {
if (outer != null)
throw Components.results.NS_ERROR_NO_AGGREGATION;
if (MessageDelegateFactory == null) {
MessageDelegateFactory = new nsLDAPMessageRDFDelegateFactory();
}
return MessageDelegateFactory.QueryInterface(iid);
}
},
nsLDAPURLRDFDelegateFactoryFactory: {
createInstance: function(outer, iid) {
if (outer != null)
throw Components.results.NS_ERROR_NO_AGGREGATION;
return (new nsLDAPURLRDFDelegateFactory()).QueryInterface(iid);
}
},
// because of the way JS components work (the JS garbage-collector
// keeps track of all the memory refs and won't unload until appropriate)
// this ends up being a dummy function; it can always return true.
//
canUnload: function(compMgr) { return true; }
};
function NSGetModule(compMgr, fileSpec) { return nsLDAPDataSourceModule; }