AbstractSecureApplication.java

   1 package org.argeo.security.ui.rcp;
   2
   3 import java.security.PrivilegedAction;
   4
   5 import javax.security.auth.Subject;
   6 import javax.security.auth.login.LoginException;
   7
   8 import org.apache.commons.logging.Log;
   9 import org.apache.commons.logging.LogFactory;
  10 import org.argeo.OperatingSystem;
  11 import org.eclipse.equinox.app.IApplication;
  12 import org.eclipse.equinox.app.IApplicationContext;
  13 import org.eclipse.equinox.security.auth.ILoginContext;
  14 import org.eclipse.swt.widgets.Display;
  15 import org.eclipse.ui.IWorkbench;
  16 import org.eclipse.ui.PlatformUI;
  17 import org.eclipse.ui.application.WorkbenchAdvisor;
  18
  19 /**
  20  * RCP workbench initialization
  21  */
  22 public abstract class AbstractSecureApplication implements IApplication {
  23         private static final Log log = LogFactory
  24                         .getLog(AbstractSecureApplication.class);
  25
  26         protected WorkbenchAdvisor createWorkbenchAdvisor(String username) {
  27                 return new SecureWorkbenchAdvisor(username);
  28         }
  29
  30         public Object start(IApplicationContext context) throws Exception {
  31                 // wait for the system to be initialized
  32                 try {
  33                         Thread.sleep(3000);
  34                 } catch (Exception e2) {
  35                         // silent
  36                 }
  37
  38                 // choose login context
  39                 final ILoginContext loginContext;
  40                 if (OperatingSystem.os == OperatingSystem.WINDOWS)
  41                         loginContext = SecureApplicationActivator
  42                                         .createLoginContext(SecureApplicationActivator.CONTEXT_WINDOWS);
  43                 else
  44                         loginContext = SecureApplicationActivator
  45                                         .createLoginContext(SecureApplicationActivator.CONTEXT_NIX);
  46
  47                 final Display display = PlatformUI.createDisplay();
  48
  49                 Subject subject = null;
  50                 try {
  51                         loginContext.login();
  52                         subject = loginContext.getSubject();
  53                 } catch (LoginException e) {
  54                         log.error("Error when logging in.", e);
  55                         display.dispose();
  56                         try {
  57                                 Thread.sleep(2000);
  58                         } catch (InterruptedException e1) {
  59                                 // silent
  60                         }
  61                         return null;
  62                 }
  63
  64                 // identify after successful login
  65                 if (log.isDebugEnabled())
  66                         log.debug("subject=" + subject);
  67                 final String username = subject.getPrincipals().iterator().next()
  68                                 .getName();
  69                 if (log.isDebugEnabled())
  70                         log.debug(username + " logged in");
  71                 display.disposeExec(new Runnable() {
  72                         public void run() {
  73                                 log.debug("Display disposed");
  74                                 logout(loginContext, username);
  75                         }
  76                 });
  77
  78                 try {
  79                         PrivilegedAction<?> privilegedAction = new PrivilegedAction<Object>() {
  80                                 public Object run() {
  81                                         int result = PlatformUI.createAndRunWorkbench(display,
  82                                                         createWorkbenchAdvisor(username));
  83                                         return new Integer(result);
  84                                 }
  85                         };
  86
  87                         Integer returnCode = (Integer) Subject.doAs(subject,
  88                                         privilegedAction);
  89                         logout(loginContext, username);
  90                         return processReturnCode(returnCode);
  91                 } catch (Exception e) {
  92                         if (subject != null)
  93                                 logout(loginContext, username);
  94                         log.error("Unexpected error", e);
  95                 } finally {
  96                         display.dispose();
  97                 }
  98                 return null;
  99         }
 100
 101         protected Integer processReturnCode(Integer returnCode) {
 102                 if (returnCode == PlatformUI.RETURN_RESTART)
 103                         return IApplication.EXIT_RESTART;
 104                 else
 105                         return IApplication.EXIT_OK;
 106         }
 107
 108         static void logout(ILoginContext secureContext, String username) {
 109                 try {
 110                         secureContext.logout();
 111                         log.info("Logged out " + (username != null ? username : "")
 112                                         + " (THREAD=" + Thread.currentThread().getId() + ")");
 113                 } catch (LoginException e) {
 114                         log.error("Erorr when logging out", e);
 115                 }
 116         }
 117
 118         public void stop() {
 119                 final IWorkbench workbench;
 120                 try {
 121                         workbench = PlatformUI.getWorkbench();
 122                 } catch (Exception e) {
 123                         return;
 124                 }
 125                 if (workbench == null)
 126                         return;
 127                 final Display display = workbench.getDisplay();
 128                 if (display != null && !display.isDisposed())
 129                         display.syncExec(new Runnable() {
 130
 131                                 public void run() {
 132                                         if (!display.isDisposed())
 133                                                 workbench.close();
 134                                 }
 135                         });
 136
 137                 if (log.isDebugEnabled())
 138                         log.debug("workbench stopped");
 139         }
 140
 141 }