KernelUtils.java

   1 package org.argeo.cms.internal.kernel;
   2
   3 import java.io.File;
   4 import java.io.IOException;
   5 import java.net.URI;
   6 import java.net.URISyntaxException;
   7 import java.nio.file.Path;
   8 import java.nio.file.Paths;
   9 import java.security.PrivilegedAction;
  10 import java.util.Dictionary;
  11 import java.util.Enumeration;
  12 import java.util.Hashtable;
  13 import java.util.Properties;
  14 import java.util.TreeSet;
  15
  16 import javax.jcr.Repository;
  17 import javax.jcr.RepositoryException;
  18 import javax.jcr.Session;
  19 import javax.security.auth.Subject;
  20 import javax.security.auth.login.LoginContext;
  21 import javax.security.auth.login.LoginException;
  22 import javax.servlet.http.HttpServletRequest;
  23
  24 import org.apache.commons.logging.Log;
  25 import org.argeo.cms.CmsException;
  26 import org.argeo.node.NodeConstants;
  27 import org.osgi.framework.Bundle;
  28 import org.osgi.framework.BundleContext;
  29 import org.osgi.framework.FrameworkUtil;
  30
  31 /** Package utilities */
  32 class KernelUtils implements KernelConstants {
  33         final static String OSGI_INSTANCE_AREA = "osgi.instance.area";
  34         final static String OSGI_CONFIGURATION_AREA = "osgi.configuration.area";
  35
  36         static Dictionary<String, ?> asDictionary(Properties props) {
  37                 Hashtable<String, Object> hashtable = new Hashtable<String, Object>();
  38                 for (Object key : props.keySet()) {
  39                         hashtable.put(key.toString(), props.get(key));
  40                 }
  41                 return hashtable;
  42         }
  43
  44         static Dictionary<String, ?> asDictionary(ClassLoader cl, String resource) {
  45                 Properties props = new Properties();
  46                 try {
  47                         props.load(cl.getResourceAsStream(resource));
  48                 } catch (IOException e) {
  49                         throw new CmsException("Cannot load " + resource + " from classpath", e);
  50                 }
  51                 return asDictionary(props);
  52         }
  53
  54         static File getExecutionDir(String relativePath) {
  55                 File executionDir = new File(getFrameworkProp("user.dir"));
  56                 if (relativePath == null)
  57                         return executionDir;
  58                 try {
  59                         return new File(executionDir, relativePath).getCanonicalFile();
  60                 } catch (IOException e) {
  61                         throw new CmsException("Cannot get canonical file", e);
  62                 }
  63         }
  64
  65         static File getOsgiInstanceDir() {
  66                 return new File(getBundleContext().getProperty(OSGI_INSTANCE_AREA).substring("file:".length()))
  67                                 .getAbsoluteFile();
  68         }
  69
  70         static Path getOsgiInstancePath(String relativePath) {
  71                 return Paths.get(getOsgiInstanceUri(relativePath));
  72         }
  73
  74         static URI getOsgiInstanceUri(String relativePath) {
  75                 String osgiInstanceBaseUri = getFrameworkProp(OSGI_INSTANCE_AREA);
  76                 return safeUri(osgiInstanceBaseUri + (relativePath != null ? relativePath : ""));
  77         }
  78
  79         // static String getOsgiInstancePath(String relativePath) {
  80         // try {
  81         // if (relativePath == null)
  82         // return getOsgiInstanceDir().getCanonicalPath();
  83         // else
  84         // return new File(getOsgiInstanceDir(), relativePath).getCanonicalPath();
  85         // } catch (IOException e) {
  86         // throw new CmsException("Cannot get instance path for " + relativePath,
  87         // e);
  88         // }
  89         // }
  90
  91         static File getOsgiConfigurationFile(String relativePath) {
  92                 try {
  93                         return new File(new URI(getBundleContext().getProperty(OSGI_CONFIGURATION_AREA) + relativePath))
  94                                         .getCanonicalFile();
  95                 } catch (Exception e) {
  96                         throw new CmsException("Cannot get configuration file for " + relativePath, e);
  97                 }
  98         }
  99
 100         static String getFrameworkProp(String key, String def) {
 101                 String value = getBundleContext().getProperty(key);
 102                 if (value == null)
 103                         return def;
 104                 return value;
 105         }
 106
 107         static String getFrameworkProp(String key) {
 108                 return getFrameworkProp(key, null);
 109         }
 110
 111         // Security
 112         static Subject anonymousLogin() {
 113                 Subject subject = new Subject();
 114                 LoginContext lc;
 115                 try {
 116                         lc = new LoginContext(NodeConstants.LOGIN_CONTEXT_USER, subject);
 117                         lc.login();
 118                         return subject;
 119                 } catch (LoginException e) {
 120                         throw new CmsException("Cannot login as anonymous", e);
 121                 }
 122         }
 123
 124         // HTTP
 125         static void logRequestHeaders(Log log, HttpServletRequest request) {
 126                 if (!log.isDebugEnabled())
 127                         return;
 128                 for (Enumeration<String> headerNames = request.getHeaderNames(); headerNames.hasMoreElements();) {
 129                         String headerName = headerNames.nextElement();
 130                         Object headerValue = request.getHeader(headerName);
 131                         log.debug(headerName + ": " + headerValue);
 132                 }
 133                 log.debug(request.getRequestURI() + "\n");
 134         }
 135
 136         static void logFrameworkProperties(Log log) {
 137                 BundleContext bc = getBundleContext();
 138                 for (Object sysProp : new TreeSet<Object>(System.getProperties().keySet())) {
 139                         log.debug(sysProp + "=" + bc.getProperty(sysProp.toString()));
 140                 }
 141                 // String[] keys = { Constants.FRAMEWORK_STORAGE,
 142                 // Constants.FRAMEWORK_OS_NAME, Constants.FRAMEWORK_OS_VERSION,
 143                 // Constants.FRAMEWORK_PROCESSOR, Constants.FRAMEWORK_SECURITY,
 144                 // Constants.FRAMEWORK_TRUST_REPOSITORIES,
 145                 // Constants.FRAMEWORK_WINDOWSYSTEM, Constants.FRAMEWORK_VENDOR,
 146                 // Constants.FRAMEWORK_VERSION, Constants.FRAMEWORK_STORAGE_CLEAN,
 147                 // Constants.FRAMEWORK_LANGUAGE, Constants.FRAMEWORK_UUID };
 148                 // for (String key : keys)
 149                 // log.debug(key + "=" + bc.getProperty(key));
 150         }
 151
 152         static Session openAdminSession(Repository repository) {
 153                 return openAdminSession(repository, null);
 154         }
 155
 156         static Session openAdminSession(final Repository repository, final String workspaceName) {
 157                 ClassLoader currentCl = Thread.currentThread().getContextClassLoader();
 158                 Thread.currentThread().setContextClassLoader(KernelUtils.class.getClassLoader());
 159                 LoginContext loginContext;
 160                 try {
 161                         loginContext = new LoginContext(NodeConstants.LOGIN_CONTEXT_DATA_ADMIN);
 162                         loginContext.login();
 163                 } catch (LoginException e1) {
 164                         throw new CmsException("Could not login as data admin", e1);
 165                 } finally {
 166                         Thread.currentThread().setContextClassLoader(currentCl);
 167                 }
 168                 return Subject.doAs(loginContext.getSubject(), new PrivilegedAction<Session>() {
 169
 170                         @Override
 171                         public Session run() {
 172                                 try {
 173                                         return repository.login(workspaceName);
 174                                 } catch (RepositoryException e) {
 175                                         throw new CmsException("Cannot open admin session", e);
 176                                 }
 177                         }
 178
 179                 });
 180         }
 181
 182         /**
 183          * @return the {@link BundleContext} of the {@link Bundle} which provided
 184          *         this class, never null.
 185          * @throws CmsException
 186          *             if the related bundle is not active
 187          */
 188         public static BundleContext getBundleContext(Class<?> clzz) {
 189                 Bundle bundle = FrameworkUtil.getBundle(clzz);
 190                 BundleContext bc = bundle.getBundleContext();
 191                 if (bc == null)
 192                         throw new CmsException("Bundle " + bundle.getSymbolicName() + " is not active");
 193                 return bc;
 194         }
 195
 196         private static BundleContext getBundleContext() {
 197                 return getBundleContext(KernelUtils.class);
 198         }
 199
 200         private static URI safeUri(String uri) {
 201                 if (uri == null)
 202                         throw new CmsException("URI cannot be null");
 203                 try {
 204                         return new URI(uri);
 205                 } catch (URISyntaxException e) {
 206                         throw new CmsException("Dadly formatted URI " + uri, e);
 207                 }
 208         }
 209
 210
 211         private KernelUtils() {
 212
 213         }
 214 }