NodeSecurity.java

   1 package org.argeo.cms.internal.kernel;
   2
   3 import java.io.File;
   4 import java.io.IOException;
   5 import java.net.URL;
   6 import java.nio.file.ProviderNotFoundException;
   7 import java.security.KeyStore;
   8 import java.security.Provider;
   9 import java.security.Security;
  10 import java.util.Arrays;
  11 import java.util.Hashtable;
  12
  13 import javax.security.auth.Subject;
  14 import javax.security.auth.callback.Callback;
  15 import javax.security.auth.callback.CallbackHandler;
  16 import javax.security.auth.callback.NameCallback;
  17 import javax.security.auth.callback.PasswordCallback;
  18 import javax.security.auth.callback.UnsupportedCallbackException;
  19 import javax.security.auth.login.LoginContext;
  20 import javax.security.auth.login.LoginException;
  21 import javax.security.auth.x500.X500Principal;
  22
  23 import org.apache.commons.logging.Log;
  24 import org.apache.commons.logging.LogFactory;
  25 import org.argeo.cms.CmsException;
  26 import org.argeo.cms.KernelHeader;
  27 import org.argeo.security.crypto.PkiUtils;
  28 import org.bouncycastle.jce.provider.BouncyCastleProvider;
  29 import org.osgi.framework.BundleContext;
  30 import org.osgi.framework.ServiceRegistration;
  31 import org.osgi.service.useradmin.UserAdmin;
  32
  33 /** Authentication and user management. */
  34 class NodeSecurity {
  35         private final static Log log;
  36         static {
  37                 log = LogFactory.getLog(NodeSecurity.class);
  38                 // Make Bouncy Castle the default provider
  39                 Provider provider = new BouncyCastleProvider();
  40                 int position = Security.insertProviderAt(provider, 1);
  41                 if (position == -1)
  42                         log.error("Provider " + provider.getName()
  43                                         + " already installed and could not be set as default");
  44                 Provider defaultProvider = Security.getProviders()[0];
  45                 if (!defaultProvider.getName().equals(KernelHeader.SECURITY_PROVIDER))
  46                         log.error("Provider name is " + defaultProvider.getName()
  47                                         + " but it should be " + KernelHeader.SECURITY_PROVIDER);
  48         }
  49
  50         private final BundleContext bundleContext;
  51         private final NodeUserAdmin userAdmin;
  52         private final Subject kernelSubject;
  53
  54         private ServiceRegistration<UserAdmin> userAdminReg;
  55
  56         public NodeSecurity(BundleContext bundleContext) {
  57                 // Configure JAAS first
  58                 URL url = getClass().getClassLoader().getResource(
  59                                 KernelConstants.JAAS_CONFIG);
  60                 System.setProperty("java.security.auth.login.config",
  61                                 url.toExternalForm());
  62
  63                 this.bundleContext = bundleContext;
  64                 this.kernelSubject = logKernel();
  65                 userAdmin = new NodeUserAdmin();
  66         }
  67
  68         private Subject logKernel() {
  69                 final Subject kernelSubject = new Subject();
  70                 createKeyStoreIfNeeded();
  71
  72                 CallbackHandler cbHandler = new CallbackHandler() {
  73
  74                         @Override
  75                         public void handle(Callback[] callbacks) throws IOException,
  76                                         UnsupportedCallbackException {
  77                                 // alias
  78                                 ((NameCallback) callbacks[1]).setName(KernelHeader.ROLE_KERNEL);
  79                                 // store pwd
  80                                 ((PasswordCallback) callbacks[2]).setPassword("changeit"
  81                                                 .toCharArray());
  82                                 // key pwd
  83                                 ((PasswordCallback) callbacks[3]).setPassword("changeit"
  84                                                 .toCharArray());
  85                         }
  86                 };
  87                 try {
  88                         LoginContext kernelLc = new LoginContext(
  89                                         KernelConstants.LOGIN_CONTEXT_KERNEL, kernelSubject,
  90                                         cbHandler);
  91                         kernelLc.login();
  92                 } catch (LoginException e) {
  93                         throw new CmsException("Cannot log in kernel", e);
  94                 }
  95                 return kernelSubject;
  96         }
  97
  98         public void publish() {
  99                 userAdminReg = bundleContext.registerService(UserAdmin.class,
 100                                 userAdmin, userAdmin.currentState());
 101                 }
 102
 103         void destroy() {
 104                 userAdmin.destroy();
 105                 userAdminReg.unregister();
 106
 107                 // Logout kernel
 108                 try {
 109                         LoginContext kernelLc = new LoginContext(
 110                                         KernelConstants.LOGIN_CONTEXT_KERNEL, kernelSubject);
 111                         kernelLc.logout();
 112                 } catch (LoginException e) {
 113                         throw new CmsException("Cannot log in kernel", e);
 114                 }
 115
 116                 Security.removeProvider(KernelHeader.SECURITY_PROVIDER);
 117         }
 118
 119         public NodeUserAdmin getUserAdmin() {
 120                 return userAdmin;
 121         }
 122
 123         public Subject getKernelSubject() {
 124                 return kernelSubject;
 125         }
 126
 127         private void createKeyStoreIfNeeded() {
 128                 char[] ksPwd = "changeit".toCharArray();
 129                 char[] keyPwd = Arrays.copyOf(ksPwd, ksPwd.length);
 130                 File keyStoreFile = new File(KernelUtils.getOsgiInstanceDir(),
 131                                 "node.p12");
 132                 if (!keyStoreFile.exists()) {
 133                         try {
 134                                 keyStoreFile.getParentFile().mkdirs();
 135                                 KeyStore keyStore = PkiUtils.getKeyStore(keyStoreFile, ksPwd);
 136                                 PkiUtils.generateSelfSignedCertificate(keyStore,
 137                                                 new X500Principal(KernelHeader.ROLE_KERNEL), keyPwd);
 138                                 PkiUtils.saveKeyStore(keyStoreFile, ksPwd, keyStore);
 139                         } catch (Exception e) {
 140                                 throw new CmsException("Cannot create key store "
 141                                                 + keyStoreFile, e);
 142                         }
 143                 }
 144         }
 145 }