ResolverFlags flags, ResolverState state)
throws PartialResolutionException
{
log.trace("resolveAuthSegment - segment='" + segment + "'");
XRDS xrdsOut = new XRDS();
XRDS tmpXRDS = null;
CanonicalID parentCID = null;
boolean authResComplete = false;
ResolverFlags currentFlags = null; // this is only for overriding by HttpsBypassAuthority settings
String parentXRI = ((XRIAuthority)qxri.getAuthorityPath()).getRootAuthority();
XRISegment remainingSegment = segment;
while (remainingSegment != null && remainingSegment.getNumSubSegments() > 0) {
// clone flags
currentFlags = new ResolverFlags(flags);
// more subsegments to resolve
String query = remainingSegment.getSubSegmentAt(0).toURINormalForm(true);
log.debug("resolveAuthSegment - resolving subsegment '" + query + "'");
checkMaxRequests(xrdsOut, query, state);
// if HTTPS is requested and what we are resolving is allowed to bypass HTTPS, we turn off the HTTPS flag
// for auth-res service selection
if (currentFlags.isHttps() && isHttpsBypassAuthority(parentXRI)) {
log.debug("Bypassing HTTPS for " + parentXRI);
currentFlags.setHttps(false);
}
//// perform service selection
String authResMediaType = Tags.CONTENT_TYPE_XRDS + ";" + currentFlags.getTrustParameters();
List authResServices = selectServices(parent.getServices(), Tags.SERVICE_AUTH_RES, null, authResMediaType, currentFlags);
if (authResServices.size() < 1) {
log.debug("resolveAuthSegment - no authority resolution service found!");
throw makeResolutionException(
xrdsOut,
query,
Status.AUTH_RES_NOT_FOUND,
"Authority Resolution Service Not Found"
);
}
try {
// retrieve XRDS documents for the given subsegment
log.trace("resolveAuthSegment - fetching XRDS");
tmpXRDS = fetchAuthXRDS(qxri, parent, authResServices, remainingSegment, currentFlags, state);
}
catch (PartialResolutionException e) {
log.trace("got PRE: " + e.getPartialXRDS());
log.trace("xrdsOut.n = " + xrdsOut.getNumChildren() + ", partialXRDS.n=" + e.getPartialXRDS().getNumChildren());
xrdsOut.add(e.getPartialXRDS());
throw new PartialResolutionException(xrdsOut);
}
//// add the subsegments
xrdsOut.addAll(tmpXRDS);
//// replace parent XRD
parent = tmpXRDS.getFinalXRD();
for (int k = 0; k < tmpXRDS.getNumChildren(); k++) {
XRISubSegment subseg = remainingSegment.getSubSegmentAt(k);
parentXRI = parentXRI + subseg;
}
remainingSegment = remainingSegment.getRemainder(tmpXRDS.getNumChildren());
tmpXRDS = null;
try {
if (parent.getNumRedirects() > 0) {
log.debug("resolveAuthSegment - processing Redirect(s)");
tmpXRDS = processRedirects(qxri, parent, currentFlags, state);
xrdsOut.addAll(tmpXRDS);
// replace parent
parent = tmpXRDS.getFinalXRD();
}
else if (parent.getNumRefs() > 0) {
if (!currentFlags.isRefs()) {
throw makeResolutionException(
xrdsOut,
query,
Status.REF_NOT_FOLLOWED,
"Ref not followed");
}
log.debug("resolveAuthSegment - processing Ref(s)");
tmpXRDS = processRefs(parent, currentFlags, state);
xrdsOut.addAll(tmpXRDS);
// replace parent
parent = tmpXRDS.getFinalXRD();
}
}
catch (PartialResolutionException e) {
xrdsOut.addAll(e.getPartialXRDS());
log.debug("resolveAuthSegment - got PRE while processing Ref or Redirect");