/**
* Write credential into a document. as is a mime media-type specification and provides the form
* of the document which is being requested. Two standard document forms are defined. "text/text"
* encodes the document in a form nice for printing out and "text/xml" which provides an XML
* format.
*
* @param as The mime media type of the encoding format being requested.
* @return the StructuredDocument which represents this credential.
* @throws Exception When errors occur.
*/
public StructuredDocument getDocument(MimeMediaType as) throws Exception {
StructuredDocument doc = StructuredDocumentFactory.newStructuredDocument(as, "jxta:Cred");
if (doc instanceof Attributable) {
((Attributable) doc).addAttribute("xmlns:jxta", "http://jxta.org");
((Attributable) doc).addAttribute("xml:space", "preserve");
((Attributable) doc).addAttribute("type", "AuthenticationCredential");
}
Element e = doc.createElement("Method", getMethod());
doc.appendChild(e);
e = doc.createElement("PeerGroupID", getPeerGroupID().toString());
doc.appendChild(e);
e = doc.createElement("PeerID", getPeerID().toString());
doc.appendChild(e);
if (null != identityInfo) {
e = doc.createElement("IdentityInfo");
doc.appendChild(e);
StructuredDocumentUtils.copyElements(doc, e, identityInfo);
}
return doc;
}
/**
* Creates new AuthenticationCredential
*
* @param peergroup The peergroup context in which this AuthenticationCredential is created.
* @param method The authentication method which will be requested when the
* AuthentiationCredential is provided to the peergroup Membership Service. Authentication
* methods are specific to Membership services. Consult the Documentation for the Membership
* service you will be authenticating against in order to determine the valid <tt>method</tt>
* values. Every Membership service should support a default authentication method which can
* be specified as <tt>null</null>.
* @param indentityInfo Optional additional information which is used by the authentication method
* or <tt>null</tt>. This information is passed to the authentication method during the apply
* operation of the Membership Service. Consult the documentation for the specific Membership
* Service you are using for details on how this information is used (if at all).
*/
public AuthenticationCredential(PeerGroup peergroup, String method, Element indentityInfo) {
this.peergroup = peergroup;
authenticationMethod = method;
if (null != indentityInfo) {
this.identityInfo = StructuredDocumentUtils.copyAsDocument(indentityInfo);
}
}
private void outputModules(
StructuredTextDocument doc, Hashtable modulesTable, String mainTag, MimeMediaType encodeAs) {
Enumeration allClasses = modulesTable.keys();
while (allClasses.hasMoreElements()) {
ModuleClassID mcid = (ModuleClassID) allClasses.nextElement();
Object val = modulesTable.get(mcid);
// For applications, we ignore the role ID. It is not meaningfull,
// and a new one is assigned on the fly when loading this adv.
if (val instanceof Advertisement) {
TextElement m = doc.createElement(mainTag);
doc.appendChild(m);
if (!(modulesTable == appsTable || mcid.equals(mcid.getBaseClass()))) {
// It is not an app and there is a role ID. Output it.
TextElement i = doc.createElement(mcidTag, mcid.toString());
m.appendChild(i);
}
StructuredTextDocument advdoc =
(StructuredTextDocument) ((Advertisement) val).getDocument(encodeAs);
StructuredDocumentUtils.copyElements(doc, m, advdoc);
} else if (val instanceof ModuleSpecID) {
TextElement m;
if (modulesTable == appsTable || mcid.equals(mcid.getBaseClass())) {
// Either it is an app or there is no role ID.
// So the specId is good enough.
m = doc.createElement(mainTag, ((ModuleSpecID) val).toString());
doc.appendChild(m);
} else {
// The role ID matters, so the classId must be separate.
m = doc.createElement(mainTag);
doc.appendChild(m);
TextElement i;
i = doc.createElement(mcidTag, mcid.toString());
m.appendChild(i);
i = doc.createElement(msidTag, ((ModuleSpecID) val).toString());
m.appendChild(i);
}
} else {
if (LOG.isEnabledFor(Level.WARN)) LOG.warn("unsupported class in modules table");
}
}
}
/**
* Process an individual element from the document.
*
* @param elem the element to be processed.
* @return true if the element was recognized, otherwise false.
*/
protected boolean handleElement(TextElement elem) {
if (elem.getName().equals("PeerGroupID")) {
try {
URI gID = new URI(elem.getTextValue());
ID pgid = IDFactory.fromURI(gID);
if (!pgid.equals(getPeerGroupID())) {
throw new IllegalArgumentException(
"Operation is from a different group. " + pgid + " != " + getPeerGroupID());
}
} catch (URISyntaxException badID) {
throw new IllegalArgumentException("Unusable ID in advertisement: " + elem.getTextValue());
}
return true;
}
if (elem.getName().equals("PeerID")) {
try {
URI pID = new URI(elem.getTextValue());
ID pid = IDFactory.fromURI(pID);
if (!pid.equals(getPeerID())) {
throw new IllegalArgumentException(
"Operation is from a different group. " + pid + " != " + getPeerID());
}
} catch (URISyntaxException badID) {
throw new IllegalArgumentException("Bad Peer ID in advertisement: " + elem.getTextValue());
} catch (ClassCastException badID) {
throw new IllegalArgumentException("Id is not a peer id: " + elem.getTextValue());
}
return true;
}
if (elem.getName().equals("Method")) {
setMethod(elem.getTextValue());
return true;
}
if (elem.getName().equals("IdentityInfo")) {
Enumeration firstChild = elem.getChildren();
if (!firstChild.hasMoreElements()) {
throw new IllegalArgumentException("Missing identity info");
}
identityInfo = StructuredDocumentUtils.copyAsDocument((Element) firstChild.nextElement());
return true;
}
// element was not handled
return false;
}
/**
* Returns the StructuredDocument Element containing the identity information which was originally
* provided when this AuthenticationCredential was created.
*
* @return StructuredDocument Element containing the identity information which was originally
* provided when this AuthenticationCredential was created.
*/
public Element getIdentityInfo() {
return (null == identityInfo) ? null : StructuredDocumentUtils.copyAsDocument(identityInfo);
}
/**
* {@inheritDoc}
*
* @param encodeAs Description of the Parameter
* @return The document value
*/
public Document getDocument(MimeMediaType encodeAs) {
StructuredDocument adv = (StructuredDocument) super.getDocument(encodeAs);
if (hasALoop()) {
throw new IllegalStateException("I won't write a doc for a route with a loop");
}
PeerID pid = getDestPeerID();
AccessPointAdvertisement dest = getDest();
if ((null != pid) && (null != dest) && (null != dest.getPeerID())) {
if (!pid.equals(dest.getPeerID())) {
throw new IllegalStateException(
"Destination peer id and destination access point adv don't refer to the same peer");
}
}
// HACK Backwards Compatibility
if ((null == pid) && (null != dest)) {
pid = dest.getPeerID();
}
if (pid != null) {
Element e0 = adv.createElement(DEST_PID_TAG, pid.toString());
adv.appendChild(e0);
}
if (dest != null) {
// create the copy without the PID
AccessPointAdvertisement ap =
(AccessPointAdvertisement)
AdvertisementFactory.newAdvertisement(
AccessPointAdvertisement.getAdvertisementType());
ap.setEndpointAddresses(dest.getVectorEndpointAddresses());
StructuredTextDocument xptDoc = (StructuredTextDocument) ap.getDocument(encodeAs);
Element e1 = adv.createElement("Dst");
adv.appendChild(e1);
StructuredDocumentUtils.copyElements(adv, e1, xptDoc);
}
// only include hops if we have some
if (getHops().hasMoreElements()) {
Element e2 = adv.createElement("Hops");
adv.appendChild(e2);
for (Enumeration e = getHops(); e.hasMoreElements(); ) {
AccessPointAdvertisement hop = (AccessPointAdvertisement) e.nextElement();
if (hop != null) {
StructuredTextDocument xptDoc = (StructuredTextDocument) hop.getDocument(encodeAs);
StructuredDocumentUtils.copyElements(adv, e2, xptDoc);
}
}
}
return adv;
}
