Add method all permissions

Signed-off-by: SirWayne <dennis.melzer@bosch-si.com>

hawkbit-security-core/src/main/java/org/eclipse/hawkbit/im/authentication/PermissionUtils.java

@@ -0,0 +1,47 @@
+/**
+ * Copyright (c) 2011-2016 Bosch Software Innovations GmbH, Germany. All rights reserved.
+ */
+package org.eclipse.hawkbit.im.authentication;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+
+import org.springframework.security.core.GrantedAuthority;
+import org.springframework.security.core.authority.SimpleGrantedAuthority;
+
+/**
+ * * Utility method for creation of <tt>GrantedAuthority</tt> collections etc.
+ */
+public final class PermissionUtils {
+
+    private PermissionUtils() {
+
+    }
+
+    /**
+     * Create {@link GrantedAuthority} by a special role.
+     * 
+     * @param roles
+     *            the roles
+     * @return a list of {@link GrantedAuthority}
+     */
+    public static List<GrantedAuthority> createAuthorityList(final Collection<String> roles) {
+        final List<GrantedAuthority> authorities = new ArrayList<>(roles.size());
+
+        for (final String role : roles) {
+            authorities.add(new SimpleGrantedAuthority(role));
+        }
+
+        return authorities;
+    }
+
+    /**
+     * Returns all authorities.
+     * 
+     * @return a list of {@link GrantedAuthority}
+     */
+    public static List<GrantedAuthority> createAllAuthorityList() {
+        return createAuthorityList(SpPermission.getAllAuthorities());
+    }
+}

hawkbit-security-core/src/main/java/org/eclipse/hawkbit/im/authentication/SpPermission.java

@@ -9,7 +9,14 @@
 package org.eclipse.hawkbit.im.authentication;
 
 import java.lang.annotation.Target;
+import java.lang.reflect.Field;
+import java.lang.reflect.Modifier;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.security.access.prepost.PreAuthorize;
 import org.springframework.security.core.GrantedAuthority;
 
@@ -35,6 +42,8 @@ import org.springframework.security.core.GrantedAuthority;
  */
 public final class SpPermission {
 
+    private static final Logger LOGGER = LoggerFactory.getLogger(SpPermission.class);
+
     /**
      * Permission to read the targets from the
      * {@link ProvisioningTargetRepository} including their meta information,
@@ -139,6 +148,27 @@ public final class SpPermission {
         // Constants only
     }
 
+    /**
+     * Return all permission.
+     * 
+     * @return all permission
+     */
+    public static Collection<String> getAllAuthorities() {
+        final List<String> allPermissions = new ArrayList<>();
+        final Field[] declaredFields = SpPermission.class.getDeclaredFields();
+        for (final Field field : declaredFields) {
+            if (Modifier.isPublic(field.getModifiers()) && Modifier.isStatic(field.getModifiers())) {
+                field.setAccessible(true);
+                try {
+                    allPermissions.add((String) field.get(null));
+                } catch (final IllegalAccessException e) {
+                    LOGGER.error(e.getMessage(), e);
+                }
+            }
+        }
+        return allPermissions;
+    }
+
     /**
      * Contains all the spring security evaluation expressions for the
      * {@link PreAuthorize} annotation for method security.