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package org.glassfish.jersey.servlet;
import java.io.IOException;
import java.net.URI;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.regex.Pattern;
import java.util.regex.PatternSyntaxException;
import javax.ws.rs.ProcessingException;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.UriBuilder;
import javax.ws.rs.core.UriBuilderException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.glassfish.jersey.internal.util.ExtendedLogger;
import org.glassfish.jersey.internal.util.collection.Value;
import org.glassfish.jersey.server.ContainerException;
import org.glassfish.jersey.server.ResourceConfig;
import org.glassfish.jersey.server.ServerProperties;
import org.glassfish.jersey.server.internal.ConfigHelper;
import org.glassfish.jersey.server.spi.Container;
import org.glassfish.jersey.server.spi.ContainerLifecycleListener;
import org.glassfish.jersey.servlet.internal.LocalizationMessages;
import org.glassfish.jersey.uri.UriComponent;
/**
* A {@link javax.servlet.Servlet} or {@link Filter} for deploying root resource classes.
*
* The following sections make reference to initialization parameters. Unless
* otherwise specified the initialization parameters apply to both server
* and filter initialization parameters.
*
* The servlet or filter may be configured to have an initialization
* parameter {@value ServletProperties#JAXRS_APPLICATION_CLASS}
* (see {@link org.glassfish.jersey.servlet.ServletProperties#JAXRS_APPLICATION_CLASS}) and whose value is a
* fully qualified name of a class that implements {@link javax.ws.rs.core.Application}.
* The class is instantiated as a singleton component
* managed by the runtime, and injection may be performed (the artifacts that
* may be injected are limited to injectable providers registered when
* the servlet or filter is configured).
*
* If the initialization parameter {@value ServletProperties#JAXRS_APPLICATION_CLASS}
* is not present and a initialization parameter {@value org.glassfish.jersey.server.ServerProperties#PROVIDER_PACKAGES}
* is present (see {@link ServerProperties#PROVIDER_PACKAGES}) a new instance of
* {@link ResourceConfig} with this configuration is created. The initialization parameter
* {@value org.glassfish.jersey.server.ServerProperties#PROVIDER_PACKAGES} MUST be set to provide one or
* more package names. Each package name MUST be separated by ';'.
*
* If none of the above resource configuration related initialization parameters
* are present a new instance of {@link ResourceConfig} with {@link WebAppResourcesScanner}
* is created. The initialization parameter {@value org.glassfish.jersey.server.ServerProperties#PROVIDER_CLASSPATH}
* is present (see {@link ServerProperties#PROVIDER_CLASSPATH}) MAY be
* set to provide one or more resource paths. Each path MUST be separated by ';'.
* If the initialization parameter is not present then the following resource
* paths are utilized: {@code "/WEB-INF/lib"} and {@code "/WEB-INF/classes"}.
*
* All initialization parameters are added as properties of the created
* {@link ResourceConfig}.
*
* A new {@link org.glassfish.jersey.server.ApplicationHandler} instance will be created and configured such
* that the following classes may be injected onto a root resource, provider
* and {@link javax.ws.rs.core.Application} classes using {@link javax.ws.rs.core.Context
* @Context} annotation:
* {@link HttpServletRequest}, {@link HttpServletResponse},
* {@link ServletContext}, {@link javax.servlet.ServletConfig} and {@link WebConfig}.
* If this class is used as a Servlet then the {@link javax.servlet.ServletConfig} class may
* be injected. If this class is used as a servlet filter then the {@link FilterConfig}
* class may be injected. {@link WebConfig} may be injected to abstract
* servlet or filter deployment.
*
* Persistence units that may be injected must be configured in web.xml
* in the normal way plus an additional servlet parameter to enable the
* Jersey servlet to locate them in JNDI. E.g. with the following
* persistence unit configuration:
*
{@code
*
* persistence/widget
* WidgetPU
*
* }
* the Jersey servlet requires an additional servlet parameter as
* follows:
*
* Given the above, Jersey will inject the {@link javax.persistence.EntityManagerFactory EntityManagerFactory} found
* at {@code java:comp/env/persistence/widget} in JNDI when encountering a
* field or parameter annotated with {@code @PersistenceUnit(unitName="WidgetPU")}.
*
* @author Paul Sandoz
* @author Pavel Bucek (pavel.bucek at oracle.com)
* @author Michal Gajdos (michal.gajdos at oracle.com)
*/
public class ServletContainer extends HttpServlet implements Filter, Container {
private static final long serialVersionUID = 3932047066686065219L;
private transient FilterConfig filterConfig;
private transient WebComponent webComponent;
private transient ResourceConfig resourceConfig;
private transient Pattern staticContentPattern;
private transient String filterContextPath;
private volatile ContainerLifecycleListener containerListener;
private static final ExtendedLogger logger =
new ExtendedLogger(Logger.getLogger(ServletContainer.class.getName()), Level.FINEST);
/**
* Initiate the Web component.
*
* @param webConfig the Web configuration.
* @throws javax.servlet.ServletException in case of an initialization failure
*/
protected void init(WebConfig webConfig) throws ServletException {
webComponent = new WebComponent(webConfig, resourceConfig);
containerListener = ConfigHelper.getContainerLifecycleListener(webComponent.appHandler);
containerListener.onStartup(this);
}
/**
* Create Jersey Servlet container.
*/
public ServletContainer() {
}
/**
* Create Jersey Servlet container.
*
* @param resourceConfig container configuration.
*/
public ServletContainer(ResourceConfig resourceConfig) {
this.resourceConfig = resourceConfig;
}
/**
* Dispatches client requests to the protected
* {@code service} method. There's no need to
* override this method.
*
* @param req the {@link HttpServletRequest} object that
* contains the request the client made of
* the servlet
* @param res the {@link HttpServletResponse} object that
* contains the response the servlet returns
* to the client
* @throws IOException if an input or output error occurs
* while the servlet is handling the
* HTTP request
* @throws ServletException if the HTTP request cannot
* be handled
* @see javax.servlet.Servlet#service
*/
@Override
public void service(ServletRequest req, ServletResponse res)
throws ServletException, IOException {
HttpServletRequest request;
HttpServletResponse response;
if (!(req instanceof HttpServletRequest && res instanceof HttpServletResponse)) {
throw new ServletException("non-HTTP request or response");
}
request = (HttpServletRequest) req;
response = (HttpServletResponse) res;
service(request, response);
}
/**
* Receives standard HTTP requests from the public {@code service} method and dispatches
* them to the {@code do}XXX methods defined in
* this class. This method is an HTTP-specific version of the
* {@link javax.servlet.Servlet#service} method. There's no
* need to override this method.
*
* @param request the {@link HttpServletRequest} object that
* contains the request the client made of
* the servlet
* @param response the {@link HttpServletResponse} object that
* contains the response the servlet returns
* to the client
* @throws IOException if an input or output error occurs
* while the servlet is handling the
* HTTP request
* @throws ServletException if the HTTP request
* cannot be handled
* @see javax.servlet.Servlet#service
*/
@Override
protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
/**
* There is an annoying edge case where the service method is
* invoked for the case when the URI is equal to the deployment URL
* minus the '/', for example http://locahost:8080/HelloWorldWebApp
*/
final String servletPath = request.getServletPath();
String pathInfo = request.getPathInfo();
StringBuffer requestURL = request.getRequestURL();
String requestURI = request.getRequestURI();
final boolean checkPathInfo = pathInfo == null || pathInfo.isEmpty() || pathInfo.equals("/");
if (checkPathInfo && !request.getRequestURI().endsWith("/")) {
// Only do this if the last segment of the servlet path does not contain '.'
// This handles the case when the extension mapping is used with the servlet
// see issue 506
// This solution does not require parsing the deployment descriptor,
// however still leaves it broken for the very rare case if a standard path
// servlet mapping would include dot in the last segment (e.g. /.webresources/*)
// and somebody would want to hit the root resource without the trailing slash
int i = servletPath.lastIndexOf('/');
if (servletPath.substring(i + 1).indexOf('.') < 0) {
// TODO (+ handle request URL with invalid characters - see the creation of absoluteUriBuilder bellow)
// if (webComponent.getResourceConfig().getFeature(ResourceConfig.FEATURE_REDIRECT)) {
// URI l = UriBuilder.fromUri(request.getRequestURL().toString()).
// path("/").
// replaceQuery(request.getQueryString()).build();
//
// response.setStatus(307);
// response.setHeader("Location", l.toASCIIString());
// return;
// } else {
// pathInfo = "/";
// requestURL.append("/");
// requestURI += "/";
// }
}
}
/**
* The HttpServletRequest.getRequestURL() contains the complete URI
* minus the query and fragment components.
*/
UriBuilder absoluteUriBuilder;
try {
absoluteUriBuilder = UriBuilder.fromUri(requestURL.toString());
} catch (IllegalArgumentException iae) {
final Response.Status badRequest = Response.Status.BAD_REQUEST;
response.sendError(badRequest.getStatusCode(), badRequest.getReasonPhrase());
return;
}
/**
* The HttpServletRequest.getPathInfo() and
* HttpServletRequest.getServletPath() are in decoded form.
*
* On some servlet implementations the getPathInfo() removed
* contiguous '/' characters. This is problematic if URIs
* are embedded, for example as the last path segment.
* We need to work around this and not use getPathInfo
* for the decodedPath.
*/
final String decodedBasePath = (pathInfo != null)
? request.getContextPath() + servletPath + "/"
: request.getContextPath() + "/";
final String encodedBasePath = UriComponent.encode(decodedBasePath,
UriComponent.Type.PATH);
if (!decodedBasePath.equals(encodedBasePath)) {
throw new ProcessingException("The servlet context path and/or the "
+ "servlet path contain characters that are percent encoded");
}
final URI baseUri;
final URI requestUri;
try {
baseUri = absoluteUriBuilder.replacePath(encodedBasePath).
build();
String queryParameters = request.getQueryString();
if (queryParameters == null) {
queryParameters = "";
}
requestUri = absoluteUriBuilder.replacePath(requestURI).
replaceQuery(queryParameters).
build();
} catch (UriBuilderException ex) {
final Response.Status badRequest = Response.Status.BAD_REQUEST;
response.sendError(badRequest.getStatusCode(), badRequest.getReasonPhrase());
return;
}
service(baseUri, requestUri, request, response);
}
@Override
public void destroy() {
super.destroy();
ContainerLifecycleListener listener = containerListener;
if (listener != null) {
listener.onShutdown(this);
}
}
@Override
public void init() throws ServletException {
init(new WebServletConfig(this));
}
/**
* Dispatch client requests to a resource class.
*
* @param baseUri the base URI of the request.
* @param requestUri the URI of the request.
* @param request the {@link javax.servlet.http.HttpServletRequest} object that
* contains the request the client made to
* the Web component.
* @param response the {@link javax.servlet.http.HttpServletResponse} object that
* contains the response the Web component returns
* to the client.
* @return lazily initialized response status code {@link Value value provider}.
* @throws IOException if an input or output error occurs
* while the Web component is handling the
* HTTP request.
* @throws ServletException if the HTTP request cannot
* be handled.
*/
public Value service(URI baseUri, URI requestUri, final HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
return webComponent.service(baseUri, requestUri, request, response);
}
// Filter
@Override
public void init(FilterConfig filterConfig) throws ServletException {
this.filterConfig = filterConfig;
init(new WebFilterConfig(filterConfig));
String regex = (String) getConfiguration().getProperty(ServletProperties.FILTER_STATIC_CONTENT_REGEX);
if (regex != null && regex.length() > 0) {
try {
staticContentPattern = Pattern.compile(regex);
} catch (PatternSyntaxException ex) {
throw new ContainerException(LocalizationMessages.INIT_PARAM_REGEX_SYNTAX_INVALID(
regex, ServletProperties.FILTER_STATIC_CONTENT_REGEX), ex);
}
}
this.filterContextPath = filterConfig.getInitParameter(ServletProperties.FILTER_CONTEXT_PATH);
if (filterContextPath != null) {
if (filterContextPath.isEmpty()) {
filterContextPath = null;
} else {
if (!filterContextPath.startsWith("/")) {
filterContextPath = '/' + filterContextPath;
}
if (filterContextPath.endsWith("/")) {
filterContextPath = filterContextPath.substring(0, filterContextPath.length() - 1);
}
}
}
}
@Override
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain)
throws IOException, ServletException {
try {
doFilter((HttpServletRequest) servletRequest, (HttpServletResponse) servletResponse, filterChain);
} catch (ClassCastException e) {
throw new ServletException("non-HTTP request or response", e);
}
}
/**
* Get the servlet context for the servlet or filter, depending on
* how this class is registered.
*
* @return the servlet context for the servlet or filter.
*/
@Override
public ServletContext getServletContext() {
if (filterConfig != null) {
return filterConfig.getServletContext();
}
return super.getServletContext();
}
/**
* Dispatches client requests to the
* {@link #service(URI, URI, HttpServletRequest, HttpServletResponse)} method.
*
* If the servlet path matches the regular expression declared by the
* property {@link ServletProperties#FILTER_STATIC_CONTENT_REGEX} then the
* request is forwarded to the next filter in the filter chain so that the
* underlying servlet engine can process the request otherwise Jersey
* will process the request.
*
* @param request the {@link HttpServletRequest} object that
* contains the request the client made to
* the servlet.
* @param response the {@link HttpServletResponse} object that
* contains the response the servlet returns
* to the client.
* @param chain the chain of filters from which the next filter can be invoked.
* @throws java.io.IOException in case of an I/O error.
* @throws javax.servlet.ServletException in case of an error while executing the
* filter chain.
*/
public void doFilter(HttpServletRequest request, HttpServletResponse response, FilterChain chain)
throws IOException, ServletException {
if (request.getAttribute("javax.servlet.include.request_uri") != null) {
final String includeRequestURI = (String) request.getAttribute("javax.servlet.include.request_uri");
if (!includeRequestURI.equals(request.getRequestURI())) {
doFilter(request, response, chain,
includeRequestURI,
(String) request.getAttribute("javax.servlet.include.servlet_path"),
(String) request.getAttribute("javax.servlet.include.query_string"));
return;
}
}
/**
* JERSEY-880 - WAS interprets HttpServletRequest#getServletPath() and HttpServletRequest#getPathInfo()
* differently when accessing a static resource.
*/
final String servletPath = request.getServletPath()
+ (request.getPathInfo() == null ? "" : request.getPathInfo());
doFilter(request, response, chain,
request.getRequestURI(),
servletPath,
request.getQueryString());
}
private void doFilter(HttpServletRequest request, HttpServletResponse response, FilterChain chain,
String requestURI, String servletPath, String queryString) throws IOException, ServletException {
// if we match the static content regular expression lets delegate to
// the filter chain to use the default container servlets & handlers
final Pattern p = getStaticContentPattern();
if (p != null && p.matcher(servletPath).matches()) {
chain.doFilter(request, response);
return;
}
if (filterContextPath != null) {
if (!servletPath.startsWith(filterContextPath)) {
throw new ContainerException(LocalizationMessages.SERVLET_PATH_MISMATCH(servletPath, filterContextPath));
//TODO:
// } else if (servletPath.length() == filterContextPath.length()) {
// // Path does not end in a slash, may need to redirect
// if (webComponent.getResourceConfig().getFeature(ResourceConfig.FEATURE_REDIRECT)) {
// URI l = UriBuilder.fromUri(request.getRequestURL().toString()).
// path("/").
// replaceQuery(queryString).build();
//
// response.setStatus(307);
// response.setHeader("Location", l.toASCIIString());
// return;
// } else {
// requestURI += "/";
// }
}
}
final UriBuilder absoluteUriBuilder = UriBuilder.fromUri(
request.getRequestURL().toString());
final URI baseUri = (filterContextPath == null)
? absoluteUriBuilder.replacePath(request.getContextPath()).
path("/").
build()
: absoluteUriBuilder.replacePath(request.getContextPath()).
path(filterContextPath).
path("/").
build();
final URI requestUri = absoluteUriBuilder.replacePath(requestURI).
replaceQuery(queryString).
build();
final int status = service(baseUri, requestUri, request, response).get();
// If forwarding is configured and response is a 404 with no entity
// body then call the next filter in the chain
if (webComponent.forwardOn404 && status == 404 && !response.isCommitted()) {
// lets clear the response to OK before we forward to the next in the chain
// as OK is the default set by servlet containers before filters/servlets do any wor
// so lets hide our footsteps and pretend we were never in the chain at all and let the
// next filter or servlet return the 404 if they can't find anything to return
//
// We could add an optional flag to disable this step if anyone can ever find a case where
// this causes a problem, though I suspect any problems will really be with downstream
// servlets not correctly setting an error status if they cannot find something to return
response.setStatus(HttpServletResponse.SC_OK);
chain.doFilter(request, response);
}
}
/**
* Get the static content path pattern.
*
* @return the {@link Pattern} compiled from a regular expression that is
* the property value of {@link ServletProperties#FILTER_STATIC_CONTENT_REGEX}.
* A {@code null} value will be returned if the property is not set or is
* an empty String.
*/
protected Pattern getStaticContentPattern() {
return staticContentPattern;
}
@Override
public ResourceConfig getConfiguration() {
return webComponent.appHandler.getConfiguration();
}
@Override
public void reload() {
reload(getConfiguration());
}
@Override
public void reload(ResourceConfig configuration) {
try {
webComponent = new WebComponent(webComponent.webConfig, configuration);
containerListener.onReload(this);
containerListener = ConfigHelper.getContainerLifecycleListener(webComponent.appHandler);
} catch (ServletException ex) {
logger.log(Level.SEVERE, "Reload failed", ex);
}
}
}
