NodeHttp.java

   1 package org.argeo.cms.internal.kernel;
   2
   3 import java.io.IOException;
   4 import java.nio.file.Files;
   5 import java.nio.file.Path;
   6 import java.util.Properties;
   7
   8 import javax.jcr.Repository;
   9 import javax.servlet.ServletException;
  10 import javax.servlet.http.HttpServletRequest;
  11 import javax.servlet.http.HttpServletResponse;
  12
  13 import org.apache.commons.logging.Log;
  14 import org.apache.commons.logging.LogFactory;
  15 import org.apache.jackrabbit.server.SessionProvider;
  16 import org.apache.jackrabbit.server.remoting.davex.JcrRemotingServlet;
  17 import org.apache.jackrabbit.webdav.simple.SimpleWebdavServlet;
  18 import org.argeo.cms.CmsException;
  19 import org.argeo.cms.internal.http.CmsSessionProvider;
  20 import org.argeo.cms.internal.http.DataHttpContext;
  21 import org.argeo.cms.internal.http.HttpUtils;
  22 import org.argeo.cms.internal.http.LinkServlet;
  23 import org.argeo.cms.internal.http.PrivateHttpContext;
  24 import org.argeo.cms.internal.http.RobotServlet;
  25 import org.argeo.node.NodeConstants;
  26 import org.osgi.framework.BundleContext;
  27 import org.osgi.framework.FrameworkUtil;
  28 import org.osgi.framework.ServiceReference;
  29 import org.osgi.service.http.HttpService;
  30 import org.osgi.service.http.NamespaceException;
  31 import org.osgi.util.tracker.ServiceTracker;
  32
  33 /**
  34  * Intercepts and enriches http access, mainly focusing on security and
  35  * transactionality.
  36  */
  37 public class NodeHttp implements KernelConstants {
  38         private final static Log log = LogFactory.getLog(NodeHttp.class);
  39
  40         public final static String DEFAULT_SERVICE = "HTTP";
  41
  42         private final BundleContext bc = FrameworkUtil.getBundle(getClass()).getBundleContext();
  43
  44         private ServiceTracker<Repository, Repository> repositories;
  45         private final ServiceTracker<HttpService, HttpService> httpServiceTracker;
  46
  47         private String httpRealm = "Argeo";
  48         private String webDavConfig = HttpUtils.WEBDAV_CONFIG;
  49         private final boolean cleanState;
  50
  51         public NodeHttp(boolean cleanState) {
  52                 this.cleanState = cleanState;
  53                 httpServiceTracker = new PrepareHttpStc();
  54                 // httpServiceTracker.open();
  55                 KernelUtils.asyncOpen(httpServiceTracker);
  56         }
  57
  58         public void destroy() {
  59                 if (repositories != null)
  60                         repositories.close();
  61         }
  62
  63         public void registerRepositoryServlets(HttpService httpService, String alias, Repository repository) {
  64                 if (httpService == null)
  65                         throw new CmsException("No HTTP service available");
  66                 try {
  67                         registerWebdavServlet(httpService, alias, repository);
  68                         registerRemotingServlet(httpService, alias, repository);
  69                         if (NodeConstants.HOME.equals(alias))
  70                                 registerFilesServlet(httpService, alias, repository);
  71                         if (log.isTraceEnabled())
  72                                 log.trace("Registered servlets for repository '" + alias + "'");
  73                 } catch (Exception e) {
  74                         throw new CmsException("Could not register servlets for repository '" + alias + "'", e);
  75                 }
  76         }
  77
  78         public static void unregisterRepositoryServlets(HttpService httpService, String alias) {
  79                 if (httpService == null)
  80                         return;
  81                 try {
  82                         httpService.unregister(webdavPath(alias));
  83                         httpService.unregister(remotingPath(alias));
  84                         if (NodeConstants.HOME.equals(alias))
  85                                 httpService.unregister(filesPath(alias));
  86                         if (log.isTraceEnabled())
  87                                 log.trace("Unregistered servlets for repository '" + alias + "'");
  88                 } catch (Exception e) {
  89                         log.error("Could not unregister servlets for repository '" + alias + "'", e);
  90                 }
  91         }
  92
  93         void registerWebdavServlet(HttpService httpService, String alias, Repository repository)
  94                         throws NamespaceException, ServletException {
  95                 // WebdavServlet webdavServlet = new WebdavServlet(repository, new
  96                 // OpenInViewSessionProvider(alias));
  97                 WebdavServlet webdavServlet = new WebdavServlet(repository, new CmsSessionProvider(alias));
  98                 String path = webdavPath(alias);
  99                 Properties ip = new Properties();
 100                 ip.setProperty(WebdavServlet.INIT_PARAM_RESOURCE_CONFIG, webDavConfig);
 101                 ip.setProperty(WebdavServlet.INIT_PARAM_RESOURCE_PATH_PREFIX, path);
 102                 httpService.registerServlet(path, webdavServlet, ip, new DataHttpContext(httpRealm));
 103         }
 104
 105         void registerFilesServlet(HttpService httpService, String alias, Repository repository)
 106                         throws NamespaceException, ServletException {
 107                 WebdavServlet filesServlet = new WebdavServlet(repository, new CmsSessionProvider(alias));
 108                 String path = filesPath(alias);
 109                 Properties ip = new Properties();
 110                 ip.setProperty(WebdavServlet.INIT_PARAM_RESOURCE_CONFIG, webDavConfig);
 111                 ip.setProperty(WebdavServlet.INIT_PARAM_RESOURCE_PATH_PREFIX, path);
 112                 httpService.registerServlet(path, filesServlet, ip, new PrivateHttpContext(httpRealm, true));
 113         }
 114
 115         void registerRemotingServlet(HttpService httpService, String alias, Repository repository)
 116                         throws NamespaceException, ServletException {
 117                 RemotingServlet remotingServlet = new RemotingServlet(repository, new CmsSessionProvider(alias));
 118                 String path = remotingPath(alias);
 119                 Properties ip = new Properties();
 120                 ip.setProperty(JcrRemotingServlet.INIT_PARAM_RESOURCE_PATH_PREFIX, path);
 121                 ip.setProperty(JcrRemotingServlet.INIT_PARAM_AUTHENTICATE_HEADER, "Negotiate");
 122
 123                 // Looks like a bug in Jackrabbit remoting init
 124                 Path tmpDir;
 125                 try {
 126                         tmpDir = Files.createTempDirectory("remoting_" + alias);
 127                 } catch (IOException e) {
 128                         throw new CmsException("Cannot create temp directory for remoting servlet", e);
 129                 }
 130                 ip.setProperty(RemotingServlet.INIT_PARAM_HOME, tmpDir.toString());
 131                 ip.setProperty(RemotingServlet.INIT_PARAM_TMP_DIRECTORY, "remoting_" + alias);
 132                 ip.setProperty(RemotingServlet.INIT_PARAM_PROTECTED_HANDLERS_CONFIG, HttpUtils.DEFAULT_PROTECTED_HANDLERS);
 133                 ip.setProperty(RemotingServlet.INIT_PARAM_CREATE_ABSOLUTE_URI, "false");
 134                 httpService.registerServlet(path, remotingServlet, ip, new PrivateHttpContext(httpRealm));
 135         }
 136
 137         static String webdavPath(String alias) {
 138                 return NodeConstants.PATH_DATA + "/" + alias;
 139         }
 140
 141         static String remotingPath(String alias) {
 142                 return NodeConstants.PATH_JCR + "/" + alias;
 143         }
 144
 145         static String filesPath(String alias) {
 146                 return NodeConstants.PATH_FILES;
 147         }
 148
 149         class RepositoriesStc extends ServiceTracker<Repository, Repository> {
 150                 private final HttpService httpService;
 151
 152                 private final BundleContext bc;
 153
 154                 public RepositoriesStc(BundleContext bc, HttpService httpService) {
 155                         super(bc, Repository.class, null);
 156                         this.httpService = httpService;
 157                         this.bc = bc;
 158                 }
 159
 160                 @Override
 161                 public Repository addingService(ServiceReference<Repository> reference) {
 162                         Repository repository = bc.getService(reference);
 163                         Object jcrRepoAlias = reference.getProperty(NodeConstants.CN);
 164                         if (jcrRepoAlias != null) {
 165                                 String alias = jcrRepoAlias.toString();
 166                                 registerRepositoryServlets(httpService, alias, repository);
 167                         }
 168                         return repository;
 169                 }
 170
 171                 @Override
 172                 public void modifiedService(ServiceReference<Repository> reference, Repository service) {
 173                 }
 174
 175                 @Override
 176                 public void removedService(ServiceReference<Repository> reference, Repository service) {
 177                         Object jcrRepoAlias = reference.getProperty(NodeConstants.CN);
 178                         if (jcrRepoAlias != null) {
 179                                 String alias = jcrRepoAlias.toString();
 180                                 unregisterRepositoryServlets(httpService, alias);
 181                         }
 182                 }
 183         }
 184
 185         private class PrepareHttpStc extends ServiceTracker<HttpService, HttpService> {
 186                 public PrepareHttpStc() {
 187                         super(bc, HttpService.class, null);
 188                 }
 189
 190                 @Override
 191                 public HttpService addingService(ServiceReference<HttpService> reference) {
 192                         long begin = System.currentTimeMillis();
 193                         if (log.isTraceEnabled())
 194                                 log.trace("HTTP prepare starts...");
 195                         HttpService httpService = addHttpService(reference);
 196                         if (log.isTraceEnabled())
 197                                 log.trace("HTTP prepare duration: " + (System.currentTimeMillis() - begin) + "ms");
 198                         return httpService;
 199                 }
 200
 201                 @Override
 202                 public void removedService(ServiceReference<HttpService> reference, HttpService service) {
 203                         repositories.close();
 204                         repositories = null;
 205                 }
 206
 207                 private HttpService addHttpService(ServiceReference<HttpService> sr) {
 208                         HttpService httpService = bc.getService(sr);
 209                         // TODO find constants
 210                         Object httpPort = sr.getProperty("http.port");
 211                         Object httpsPort = sr.getProperty("https.port");
 212
 213                         try {
 214                                 httpService.registerServlet("/!", new LinkServlet(), null, null);
 215                                 httpService.registerServlet("/robots.txt", new RobotServlet(), null, null);
 216                                 // httpService.registerServlet("/html", new HtmlServlet(), null, null);
 217                         } catch (Exception e) {
 218                                 throw new CmsException("Cannot register filters", e);
 219                         }
 220                         // track repositories
 221                         if (repositories != null)
 222                                 throw new CmsException("An http service is already configured");
 223                         repositories = new RepositoriesStc(bc, httpService);
 224                         // repositories.open();
 225                         if (cleanState)
 226                                 KernelUtils.asyncOpen(repositories);
 227                         log.info(httpPortsMsg(httpPort, httpsPort));
 228                         // httpAvailable = true;
 229                         // checkReadiness();
 230
 231                         bc.registerService(NodeHttp.class, NodeHttp.this, null);
 232                         return httpService;
 233                 }
 234
 235                 private String httpPortsMsg(Object httpPort, Object httpsPort) {
 236                         return (httpPort != null ? "HTTP " + httpPort + " " : " ")
 237                                         + (httpsPort != null ? "HTTPS " + httpsPort : "");
 238                 }
 239         }
 240
 241         private static class WebdavServlet extends SimpleWebdavServlet {
 242                 private static final long serialVersionUID = -4687354117811443881L;
 243                 private final Repository repository;
 244
 245                 public WebdavServlet(Repository repository, SessionProvider sessionProvider) {
 246                         this.repository = repository;
 247                         setSessionProvider(sessionProvider);
 248                 }
 249
 250                 public Repository getRepository() {
 251                         return repository;
 252                 }
 253
 254                 @Override
 255                 protected void service(final HttpServletRequest request, final HttpServletResponse response)
 256                                 throws ServletException, IOException {
 257                         WebdavServlet.super.service(request, response);
 258                         // try {
 259                         // Subject subject = subjectFromRequest(request);
 260                         // // TODO make it stronger, with eTags.
 261                         // // if (CurrentUser.isAnonymous(subject) &&
 262                         // // request.getMethod().equals("GET")) {
 263                         // // response.setHeader("Cache-Control", "no-transform, public,
 264                         // // max-age=300, s-maxage=900");
 265                         // // }
 266                         //
 267                         // Subject.doAs(subject, new PrivilegedExceptionAction<Void>() {
 268                         // @Override
 269                         // public Void run() throws Exception {
 270                         // WebdavServlet.super.service(request, response);
 271                         // return null;
 272                         // }
 273                         // });
 274                         // } catch (PrivilegedActionException e) {
 275                         // throw new CmsException("Cannot process webdav request",
 276                         // e.getException());
 277                         // }
 278                 }
 279
 280         }
 281
 282         private static class RemotingServlet extends JcrRemotingServlet {
 283                 private final Log log = LogFactory.getLog(RemotingServlet.class);
 284                 private static final long serialVersionUID = 4605238259548058883L;
 285                 private final Repository repository;
 286                 private final SessionProvider sessionProvider;
 287
 288                 public RemotingServlet(Repository repository, SessionProvider sessionProvider) {
 289                         this.repository = repository;
 290                         this.sessionProvider = sessionProvider;
 291                 }
 292
 293                 @Override
 294                 protected Repository getRepository() {
 295                         return repository;
 296                 }
 297
 298                 @Override
 299                 protected SessionProvider getSessionProvider() {
 300                         return sessionProvider;
 301                 }
 302
 303                 @Override
 304                 protected void service(final HttpServletRequest request, final HttpServletResponse response)
 305                                 throws ServletException, IOException {
 306                         if (log.isTraceEnabled())
 307                                 HttpUtils.logRequest(log, request);
 308                         RemotingServlet.super.service(request, response);
 309                 }
 310         }
 311
 312 }