NodeHttp.java

   1 package org.argeo.cms.internal.kernel;
   2
   3 import java.io.IOException;
   4 import java.util.Enumeration;
   5 import java.util.Properties;
   6 import java.util.StringTokenizer;
   7
   8 import javax.servlet.FilterChain;
   9 import javax.servlet.Servlet;
  10 import javax.servlet.ServletException;
  11 import javax.servlet.ServletRequest;
  12 import javax.servlet.http.HttpServletRequest;
  13 import javax.servlet.http.HttpServletResponse;
  14 import javax.servlet.http.HttpSession;
  15
  16 import org.apache.commons.codec.binary.Base64;
  17 import org.apache.commons.logging.Log;
  18 import org.apache.commons.logging.LogFactory;
  19 import org.argeo.cms.CmsException;
  20 import org.argeo.jackrabbit.servlet.OpenInViewSessionProvider;
  21 import org.argeo.jackrabbit.servlet.RemotingServlet;
  22 import org.argeo.jackrabbit.servlet.WebdavServlet;
  23 import org.argeo.jcr.ArgeoJcrConstants;
  24 import org.eclipse.equinox.http.servlet.ExtendedHttpService;
  25 import org.eclipse.jetty.servlets.DoSFilter;
  26 import org.osgi.framework.BundleContext;
  27 import org.osgi.service.http.NamespaceException;
  28 import org.osgi.util.tracker.ServiceTracker;
  29 import org.springframework.security.authentication.AuthenticationManager;
  30 import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
  31 import org.springframework.security.core.Authentication;
  32 import org.springframework.security.core.context.SecurityContext;
  33 import org.springframework.security.core.context.SecurityContextHolder;
  34
  35 /**
  36  * Intercepts and enriches http access, mainly focusing on security and
  37  * transactionality.
  38  */
  39 class NodeHttp implements KernelConstants, ArgeoJcrConstants {
  40         private final static Log log = LogFactory.getLog(NodeHttp.class);
  41
  42         private final static String ATTR_AUTH = "auth";
  43         private final static String HEADER_AUTHORIZATION = "Authorization";
  44         private final static String HEADER_WWW_AUTHENTICATE = "WWW-Authenticate";
  45
  46         private final AuthenticationManager authenticationManager;
  47         private final BundleContext bundleContext;
  48         private ExtendedHttpService httpService;
  49
  50         // FIXME Make it more unique
  51         private String httpAuthRealm = "Argeo";
  52
  53         // Filters
  54         private final RootFilter rootFilter;
  55         // private final DoSFilter dosFilter;
  56         // private final QoSFilter qosFilter;
  57
  58         // remoting
  59         private OpenInViewSessionProvider sessionProvider;
  60         private WebdavServlet publicWebdavServlet;
  61         private WebdavServlet privateWebdavServlet;
  62         private RemotingServlet publicRemotingServlet;
  63         private RemotingServlet privateRemotingServlet;
  64
  65         NodeHttp(BundleContext bundleContext, JackrabbitNode node,
  66                         NodeSecurity authenticationManager) {
  67                 this.bundleContext = bundleContext;
  68                 this.authenticationManager = authenticationManager;
  69
  70                 // Equinox dependency
  71                 ServiceTracker<ExtendedHttpService, ExtendedHttpService> st = new ServiceTracker<ExtendedHttpService, ExtendedHttpService>(
  72                                 bundleContext, ExtendedHttpService.class, null);
  73                 st.open();
  74                 try {
  75                         httpService = st.waitForService(1000);
  76                 } catch (InterruptedException e) {
  77                         httpService = null;
  78                 }
  79
  80                 if (httpService == null)
  81                         throw new CmsException("Could not find "
  82                                         + ExtendedHttpService.class + " service.");
  83
  84                 // Filters
  85                 rootFilter = new RootFilter();
  86                 // dosFilter = new CustomDosFilter();
  87                 // qosFilter = new QoSFilter();
  88
  89                 // DAV
  90                 sessionProvider = new OpenInViewSessionProvider();
  91                 publicWebdavServlet = new WebdavServlet(node, sessionProvider);
  92                 privateWebdavServlet = new WebdavServlet(node, sessionProvider);
  93                 publicRemotingServlet = new RemotingServlet(node, sessionProvider);
  94                 privateRemotingServlet = new RemotingServlet(node, sessionProvider);
  95         }
  96
  97         void publish() {
  98                 try {
  99                         registerWebdavServlet(PATH_WEBDAV_PUBLIC, ALIAS_NODE, true,
 100                                         publicWebdavServlet);
 101                         registerWebdavServlet(PATH_WEBDAV_PRIVATE, ALIAS_NODE, false,
 102                                         privateWebdavServlet);
 103                         registerRemotingServlet(PATH_REMOTING_PUBLIC, ALIAS_NODE, true,
 104                                         publicRemotingServlet);
 105                         registerRemotingServlet(PATH_REMOTING_PRIVATE, ALIAS_NODE, false,
 106                                         privateRemotingServlet);
 107
 108                         // httpService.registerFilter("/", dosFilter, null, null);
 109                         httpService.registerFilter("/", rootFilter, null, null);
 110                         // httpService.registerFilter("/", qosFilter, null, null);
 111                 } catch (Exception e) {
 112                         throw new CmsException("Cannot publish HTTP services to OSGi", e);
 113                 }
 114         }
 115
 116         private void registerWebdavServlet(String pathPrefix, String alias,
 117                         Boolean anonymous, WebdavServlet webdavServlet)
 118                         throws NamespaceException, ServletException {
 119                 String path = pathPrefix + "/" + alias;
 120                 Properties initParameters = new Properties();
 121                 initParameters.setProperty(WebdavServlet.INIT_PARAM_RESOURCE_CONFIG,
 122                                 KernelConstants.WEBDAV_CONFIG);
 123                 initParameters.setProperty(
 124                                 WebdavServlet.INIT_PARAM_RESOURCE_PATH_PREFIX, path);
 125                 httpService.registerFilter(path, anonymous ? new AnonymousFilter()
 126                                 : new DavFilter(), null, null);
 127                 // Cast to servlet because of a weird behaviour in Eclipse
 128                 httpService.registerServlet(path, (Servlet) webdavServlet,
 129                                 initParameters, null);
 130         }
 131
 132         private void registerRemotingServlet(String pathPrefix, String alias,
 133                         Boolean anonymous, RemotingServlet remotingServlet)
 134                         throws NamespaceException, ServletException {
 135                 String path = pathPrefix + "/" + alias;
 136                 Properties initParameters = new Properties();
 137                 initParameters.setProperty(
 138                                 RemotingServlet.INIT_PARAM_RESOURCE_PATH_PREFIX, path);
 139
 140                 // Looks like a bug in Jackrabbit remoting init
 141                 initParameters.setProperty(RemotingServlet.INIT_PARAM_HOME,
 142                                 KernelUtils.getOsgiInstanceDir(bundleContext)
 143                                                 + "/tmp/jackrabbit");
 144                 initParameters.setProperty(RemotingServlet.INIT_PARAM_TMP_DIRECTORY,
 145                                 "remoting");
 146                 // Cast to servlet because of a weird behaviour in Eclipse
 147                 httpService.registerFilter(path, anonymous ? new AnonymousFilter()
 148                                 : new DavFilter(), null, null);
 149                 httpService.registerServlet(path, (Servlet) remotingServlet,
 150                                 initParameters, null);
 151         }
 152
 153         private Boolean isSessionAuthenticated(HttpSession httpSession) {
 154                 SecurityContext contextFromSession = (SecurityContext) httpSession
 155                                 .getAttribute(SPRING_SECURITY_CONTEXT_KEY);
 156                 return contextFromSession != null;
 157         }
 158
 159         private void requestBasicAuth(HttpSession httpSession,
 160                         HttpServletResponse response) {
 161                 response.setStatus(401);
 162                 response.setHeader(HEADER_WWW_AUTHENTICATE, "basic realm=\""
 163                                 + httpAuthRealm + "\"");
 164                 httpSession.setAttribute(ATTR_AUTH, Boolean.TRUE);
 165         }
 166
 167         private UsernamePasswordAuthenticationToken basicAuth(String authHeader) {
 168                 if (authHeader != null) {
 169                         StringTokenizer st = new StringTokenizer(authHeader);
 170                         if (st.hasMoreTokens()) {
 171                                 String basic = st.nextToken();
 172                                 if (basic.equalsIgnoreCase("Basic")) {
 173                                         try {
 174                                                 String credentials = new String(Base64.decodeBase64(st
 175                                                                 .nextToken()), "UTF-8");
 176                                                 // log.debug("Credentials: " + credentials);
 177                                                 int p = credentials.indexOf(":");
 178                                                 if (p != -1) {
 179                                                         String login = credentials.substring(0, p).trim();
 180                                                         String password = credentials.substring(p + 1)
 181                                                                         .trim();
 182
 183                                                         return new UsernamePasswordAuthenticationToken(
 184                                                                         login, password.toCharArray());
 185                                                 } else {
 186                                                         throw new CmsException(
 187                                                                         "Invalid authentication token");
 188                                                 }
 189                                         } catch (Exception e) {
 190                                                 throw new CmsException(
 191                                                                 "Couldn't retrieve authentication", e);
 192                                         }
 193                                 }
 194                         }
 195                 }
 196                 throw new CmsException("Couldn't retrieve authentication");
 197         }
 198
 199         /** Intercepts all requests. Authenticates. */
 200         class RootFilter extends HttpFilter {
 201
 202                 @Override
 203                 public void doFilter(HttpSession httpSession,
 204                                 HttpServletRequest request, HttpServletResponse response,
 205                                 FilterChain filterChain) throws IOException, ServletException {
 206                         if (log.isTraceEnabled()) {
 207                                 log.debug(request.getContextPath());
 208                                 log.debug(request.getServletPath());
 209                                 log.debug(request.getRequestURI());
 210                                 log.debug(request.getQueryString());
 211                                 StringBuilder buf = new StringBuilder();
 212                                 Enumeration<String> en = request.getHeaderNames();
 213                                 while (en.hasMoreElements()) {
 214                                         String header = en.nextElement();
 215                                         Enumeration<String> values = request.getHeaders(header);
 216                                         while (values.hasMoreElements())
 217                                                 buf.append("  " + header + ": " + values.nextElement());
 218                                         buf.append('\n');
 219                                 }
 220                                 log.debug("\n" + buf);
 221                         }
 222
 223                         String servletPath = request.getServletPath();
 224
 225                         // skip data
 226                         if (servletPath.startsWith(PATH_DATA)) {
 227                                 filterChain.doFilter(request, response);
 228                                 return;
 229                         }
 230
 231                         // redirect long RWT paths to anchor
 232                         String path = request.getRequestURI().substring(
 233                                         servletPath.length());
 234                         int pathLength = path.length();
 235                         if (pathLength != 0 && (path.charAt(0) == '/')
 236                                         && !servletPath.endsWith("rwt-resources")
 237                                         && !path.equals("/")) {
 238                                 String newLocation = request.getServletPath() + "#" + path;
 239                                 response.setHeader("Location", newLocation);
 240                                 response.setStatus(HttpServletResponse.SC_FOUND);
 241                                 return;
 242                         }
 243
 244                         // process normally
 245                         filterChain.doFilter(request, response);
 246                 }
 247         }
 248
 249         /** Intercepts all requests. Authenticates. */
 250         class AnonymousFilter extends HttpFilter {
 251                 @Override
 252                 public void doFilter(HttpSession httpSession,
 253                                 HttpServletRequest request, HttpServletResponse response,
 254                                 FilterChain filterChain) throws IOException, ServletException {
 255
 256                         // Authenticate from session
 257                         if (isSessionAuthenticated(httpSession)) {
 258                                 filterChain.doFilter(request, response);
 259                                 return;
 260                         }
 261
 262                         KernelUtils.anonymousLogin(authenticationManager);
 263                         filterChain.doFilter(request, response);
 264                 }
 265         }
 266
 267         /** Intercepts all requests. Authenticates. */
 268         class DavFilter extends HttpFilter {
 269
 270                 @Override
 271                 public void doFilter(HttpSession httpSession,
 272                                 HttpServletRequest request, HttpServletResponse response,
 273                                 FilterChain filterChain) throws IOException, ServletException {
 274
 275                         // Authenticate from session
 276                         // if (isSessionAuthenticated(httpSession)) {
 277                         // filterChain.doFilter(request, response);
 278                         // return;
 279                         // }
 280
 281                         // Process basic auth
 282                         String basicAuth = request.getHeader(HEADER_AUTHORIZATION);
 283                         if (basicAuth != null) {
 284                                 UsernamePasswordAuthenticationToken token = basicAuth(basicAuth);
 285                                 Authentication auth = authenticationManager.authenticate(token);
 286                                 SecurityContextHolder.getContext().setAuthentication(auth);
 287                                 httpSession.setAttribute(SPRING_SECURITY_CONTEXT_KEY,
 288                                                 SecurityContextHolder.getContext());
 289                                 httpSession.setAttribute(ATTR_AUTH, Boolean.FALSE);
 290                                 filterChain.doFilter(request, response);
 291                                 return;
 292                         }
 293
 294                         requestBasicAuth(httpSession, response);
 295                 }
 296         }
 297
 298         class CustomDosFilter extends DoSFilter {
 299                 @Override
 300                 protected String extractUserId(ServletRequest request) {
 301                         HttpSession httpSession = ((HttpServletRequest) request)
 302                                         .getSession();
 303                         if (isSessionAuthenticated(httpSession)) {
 304                                 String userId = ((SecurityContext) httpSession
 305                                                 .getAttribute(SPRING_SECURITY_CONTEXT_KEY))
 306                                                 .getAuthentication().getName();
 307                                 return userId;
 308                         }
 309                         return super.extractUserId(request);
 310
 311                 }
 312         }
 313 }