org.argeo.cms/src/org/argeo/cms/internal/kernel/NodeHttp.java

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