@Override
protected void doStart() throws Exception {
setRootName("xcap");
_validate = _validateOnGet = false;
_processors = new HashMap<String, XcapResourceProcessor>();
createIetfProcessors();
createOmaProcessors();
_dao.init(_processors.values());
initXcapCaps();
}
private void doDelete(HttpServletRequest request, XcapResourceImpl resource)
throws XcapException, SAXException, VerifierConfigurationException {
throwExceptionIfNamespace(resource);
_dao.delete(resource);
if (!resource.isAllDocument()) {
if (_validate) {
XcapUtil.validate(resource.getDocument().getDom(), resource.getProcessor().getXsdSchema());
}
validateSpecificAppResource(resource);
}
}
private void doPut(HttpServletRequest request, XcapResourceImpl resource)
throws IOException, XcapException, SAXException, VerifierConfigurationException {
throwExceptionIfNamespace(resource);
String content = getContent(request, resource);
_dao.update(resource, content);
if (_validate)
XcapUtil.validate(resource.getDocument().getDom(), resource.getProcessor().getXsdSchema());
validateSpecificAppResource(resource);
}
private String getFirstExistNodeAncestor(XcapResource resource, String nodeSelector)
throws XcapException {
XmlResource xmlResource = _dao.getNode(resource, nodeSelector);
if (xmlResource != null) return nodeSelector;
else {
int index = nodeSelector.lastIndexOf('/');
if (index != -1) {
String parent = nodeSelector.substring(0, index);
return getFirstExistNodeAncestor(resource, parent);
} else return null;
}
}
private void initXcapCaps() throws XcapException, IOException {
StringBuilder sb = new StringBuilder();
sb.append("<?xml version=\"1.0\"?>\n");
sb.append("<xcap-caps xmlns=\"urn:ietf:params:xml:ns:xcap-caps\"\n");
sb.append(" xmlns:xsi=\"htt//www.w3.org/2001/XMLSchema-instance\"\n");
sb.append(" xsi:schemaLocation=\"urn:ietf:params:xml:ns:xcap-caps xcap-caps.xsd\">\n");
sb.append("<auids>\n");
for (XcapResourceProcessor processor : _processors.values())
sb.append("\t<auid>").append(processor.getAuid()).append("</auid>\n");
sb.append("</auids>\n");
sb.append("<namespaces>\n");
for (XcapResourceProcessor processor : _processors.values()) {
for (String namespace : processor.getNamespaceContext().values())
sb.append("\t<namespace>").append(namespace).append("</namespace>\n");
}
sb.append("</namespaces>\n");
sb.append("</xcap-caps>");
XcapResourceImpl resource =
getResource(new XcapUri("xcap-caps/global/index", ""), true, "", null);
_dao.update(resource, sb.toString());
_dao.save(resource);
}
public void service(HttpServletRequest request, HttpServletResponse response)
throws IOException, SAXException, VerifierConfigurationException {
String method = request.getMethod();
String requestUri = request.getRequestURI();
StringBuffer requestUrl = request.getRequestURL();
String head = requestUrl.substring(0, requestUrl.indexOf(requestUri));
try {
if ("POST".equals(method)) {
throw new XcapException(HttpServletResponse.SC_METHOD_NOT_ALLOWED);
}
Map<String, String> context = getXpointer(request);
XcapUri xcapUri = new XcapUri(requestUri, _rootName);
XcapResourceImpl resource = getResource(xcapUri, PUT.equals(method), head, context);
ifMatchConditionalProcessing(request, resource);
ifNoneMatchConditionalProcessing(request, resource);
resource.setAction(method);
if (method.equals(GET)) doGet(response, resource);
else if (method.equals(PUT)) doPut(request, resource);
else if (method.equals(DELETE)) doDelete(request, resource);
if (method.equals(PUT) || method.equals(DELETE)) {
checkIfSameNodeSelected(resource);
resource.getProcessor().processResource(resource);
_dao.save(resource);
notifyResourceChanged(resource);
}
String newEtag = getEtag(resource);
resource.setNewEtag(newEtag);
response.setHeader(Constants.ETAG, newEtag);
response.setStatus(HttpServletResponse.SC_OK);
if (_log.isDebugEnabled()) _log.debug(method + " " + requestUri + " sucessful");
} catch (XcapException e) {
if (e.shouldShowStackTrace()) _log.info("Unable to process " + method + " " + requestUri, e);
else _log.info("Unable to process " + method + " " + requestUri + ": " + e.getMessage());
e.sendResponse(response);
}
}
private void checkIfSameNodeSelected(XcapResourceImpl resource) throws XcapException {
if (!resource.getXcapUri().hasNodeSeparator() || resource.isCreation()) return;
try {
// boolean match =
// resource.getSelectedNode().matches(resource.getNodeSelector());
XmlResource xmlResource = _dao.getNode(resource);
boolean valid = false;
if (xmlResource == null) {
valid = resource.getAction().equals(DELETE);
} else {
Node node = xmlResource.getDom();
valid =
node.equals(resource.getSelectedResource().getDom())
&& resource.getAction().equals(PUT);
}
if (!valid) {
XcapException e1 =
new XcapException(
"Request no more select the same node", HttpServletResponse.SC_CONFLICT);
StringBuffer sb = new StringBuffer();
sb.append(XcapException.XCAP_ERROR_HEADER);
sb.append("<cannot-insert/>");
sb.append(XcapException.XCAP_ERROR_FOOTER);
e1.setContent(XcapException.XCAP_ERROR_CONTENT_TYPE, sb.toString().getBytes());
throw e1;
}
} catch (XcapException e) {
throw e;
} catch (Throwable e) {
XcapException e1 =
new XcapException(
"Cannot check if select the same node", HttpServletResponse.SC_CONFLICT, e);
StringBuffer sb = new StringBuffer();
sb.append(XcapException.XCAP_ERROR_HEADER);
sb.append("<cannot-insert/>");
sb.append(XcapException.XCAP_ERROR_FOOTER);
e1.setContent(XcapException.XCAP_ERROR_CONTENT_TYPE, sb.toString().getBytes());
throw e1;
}
}
private void locatingParent(XcapUri uri, String requestUrlHead) throws XcapException {
// See XCAP 8.2.1. Locating the Parent
String ancestor = _dao.getFirstExistAncestor(uri);
if (uri.hasNodeSeparator()
|| uri.getDocumentSelector().substring(ancestor.length() + 1).indexOf('/') != -1) {
XcapException e = new XcapException("parent does not exist", HttpServletResponse.SC_CONFLICT);
StringBuffer sb = new StringBuffer();
sb.append(XcapException.XCAP_ERROR_HEADER);
sb.append("<no-parent><ancestor>");
String url = requestUrlHead + _rootName + ancestor;
sb.append(RequestUtil.filter(url));
sb.append("</ancestor></no-parent>");
sb.append(XcapException.XCAP_ERROR_FOOTER);
e.setContent(XcapException.XCAP_ERROR_CONTENT_TYPE, sb.toString().getBytes());
throw e;
}
}
public XcapResourceImpl getResource(
XcapUri xcapUri,
boolean isPut,
String requestUrlHead,
Map<String, String> requestNamespaceContext)
throws XcapException {
XcapResourceProcessor processor = _processors.get(xcapUri.getAuid());
if (processor == null)
throw new XcapException(
"Not supported auid: " + xcapUri.getAuid() + " in URI: " + xcapUri,
HttpServletResponse.SC_NOT_FOUND);
Document document = null;
XcapResourceImpl resource = new XcapResourceImpl();
resource.setXcapUri(xcapUri);
resource.setProcessor(processor);
XmlResource xmlResource = _dao.getDocument(xcapUri, isPut && !xcapUri.hasNodeSeparator());
if (xmlResource == null) {
if (isPut) {
locatingParent(xcapUri, requestUrlHead);
resource.setCreation(true);
return resource;
} else {
XcapException e =
new XcapException(
"Resource: " + xcapUri.getDocumentSelector() + " not found",
HttpServletResponse.SC_NOT_FOUND);
e.setLevel(Level.INFO);
throw e;
}
}
resource.setDocument(xmlResource);
// TODO check rootDirectory is in parent dir.
// TODO authenticate & authorization
if (_validateOnGet) {
try {
XcapUtil.validate(document, processor.getXsdSchema());
} catch (XcapException e) {
_log.warn("Unable to validated document:" + e.getMessage(), e);
}
}
if (resource.isAllDocument()) return resource;
String nodeSelector =
XcapUtil.insertDefaultNamespace(
xcapUri.getNodeSelector(), processor.getDefaultNamespacePrefix());
if (_log.isDebugEnabled())
_log.debug("select node " + nodeSelector + " in " + xcapUri.getDocumentSelector());
if (requestNamespaceContext == null) requestNamespaceContext = new HashMap<String, String>();
requestNamespaceContext.putAll(processor.getNamespaceContext());
resource.setNamespaceContext(requestNamespaceContext);
XmlResource xmlResource2 = _dao.getNode(resource, nodeSelector);
if (xmlResource2 == null) {
if (isPut) {
// XCAP 8.2.1. Locating the Parent
String parent =
locatingParent(resource, nodeSelector, xcapUri.getDocumentSelector(), requestUrlHead);
resource.setCreation(true);
NodeType nodeType;
String nodeName = nodeSelector.substring(parent.length());
// /@id is an attribute and /service[@id="1"] is an
// element
if (nodeName.indexOf('@') != -1 && nodeName.indexOf('[') == -1) {
nodeType = NodeType.ATTRIBUTE;
nodeName = nodeName.substring(nodeName.indexOf('@') + 1);
} else nodeType = NodeType.ELEMENT;
resource.setParent(parent, nodeType, nodeName);
} else {
XcapException e =
new XcapException(
"Resource: " + xcapUri + " not found (no node selected)",
HttpServletResponse.SC_NOT_FOUND);
e.setLevel(Level.INFO);
throw e;
}
} else {
resource.setCreation(false);
resource.setSelectedResource(xmlResource2);
}
return resource;
}
