start implementation of a new security system to allow global permissions for repositories

scm-webapp/src/main/java/sonia/scm/security/ScmRealm.java

@@ -74,6 +74,7 @@ import sonia.scm.repository.PermissionType;
 import sonia.scm.repository.Repository;
 import sonia.scm.repository.RepositoryDAO;
 import sonia.scm.repository.RepositoryEvent;
+import sonia.scm.repository.RepositoryManager;
 import sonia.scm.user.User;
 import sonia.scm.user.UserDAO;
 import sonia.scm.user.UserEvent;
@@ -95,7 +96,6 @@ import java.util.Set;
 
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
-import sonia.scm.repository.RepositoryManager;
 
 /**
  *
@@ -128,25 +128,28 @@ public class ScmRealm extends AuthorizingRealm
    *
    *
    * @param configuration
+   * @param securitySystem
    * @param cacheManager
    * @param userManager
    * @param groupManager
    * @param repositoryDAO
    * @param userDAO
    * @param authenticator
+   * @param manager
    * @param requestProvider
    * @param responseProvider
    */
   @Inject
-  public ScmRealm(ScmConfiguration configuration, CacheManager cacheManager,
+  public ScmRealm(ScmConfiguration configuration,
+    SecuritySystem securitySystem, CacheManager cacheManager,
     UserManager userManager, GroupManager groupManager,
     RepositoryDAO repositoryDAO, UserDAO userDAO,
-    AuthenticationManager authenticator,
-    RepositoryManager manager,
+    AuthenticationManager authenticator, RepositoryManager manager,
     Provider<HttpServletRequest> requestProvider,
     Provider<HttpServletResponse> responseProvider)
   {
     this.configuration = configuration;
+    this.securitySystem = securitySystem;
     this.userManager = userManager;
     this.groupManager = groupManager;
     this.repositoryDAO = repositoryDAO;
@@ -194,6 +197,23 @@ public class ScmRealm extends AuthorizingRealm
     }
   }
 
+  /**
+   * Method description
+   *
+   *
+   * @param event
+   */
+  @Subscribe
+  public void onEvent(SecurityConfigurationChangedEvent event)
+  {
+    if (logger.isDebugEnabled())
+    {
+      logger.debug("clear cache, because security configuration has changed");
+    }
+
+    cache.clear();
+  }
+
   /**
    * Method description
    *
@@ -474,6 +494,44 @@ public class ScmRealm extends AuthorizingRealm
     }
   }
 
+  /**
+   * Method description
+   *
+   *
+   * @param user
+   * @param groups
+   *
+   * @return
+   */
+  private List<String> collectGlobalPermissions(User user, GroupNames groups)
+  {
+    if (logger.isTraceEnabled())
+    {
+      logger.trace("collect global permissions for user {}", user.getName());
+    }
+
+    List<String> permissions = Lists.newArrayList();
+
+    List<GlobalPermission> globalPermissions =
+      securitySystem.getConfiguration().getGlobalPermissions();
+
+    for (GlobalPermission gp : globalPermissions)
+    {
+      if (isUserPermission(user, groups, gp))
+      {
+        if (logger.isTraceEnabled())
+        {
+          logger.trace("add permission {} for user {}", gp.getPermission(),
+            user.getName());
+        }
+
+        permissions.add(gp.getPermission());
+      }
+    }
+
+    return permissions;
+  }
+
   /**
    * Method description
    *
@@ -585,7 +643,8 @@ public class ScmRealm extends AuthorizingRealm
     GroupNames groups)
   {
     Set<String> roles = Sets.newHashSet();
-    List<org.apache.shiro.authz.Permission> permissions = null;
+    List<org.apache.shiro.authz.Permission> permissions;
+    List<String> globalPermissions = null;
 
     roles.add(Role.USER);
 
@@ -604,12 +663,18 @@ public class ScmRealm extends AuthorizingRealm
     else
     {
       permissions = collectRepositoryPermissions(user, groups);
+      globalPermissions = collectGlobalPermissions(user, groups);
     }
 
     SimpleAuthorizationInfo info = new SimpleAuthorizationInfo(roles);
 
     info.addObjectPermissions(permissions);
 
+    if (globalPermissions != null)
+    {
+      info.addStringPermissions(globalPermissions);
+    }
+
     return info;
   }
 
@@ -734,7 +799,7 @@ public class ScmRealm extends AuthorizingRealm
    * @return
    */
   private boolean isUserPermission(User user, GroupNames groups,
-    Permission perm)
+    PermissionObject perm)
   {
     //J-
     return (perm.isGroupPermission() && groups.contains(perm.getName())) 
@@ -765,6 +830,9 @@ public class ScmRealm extends AuthorizingRealm
   /** Field description */
   private Provider<HttpServletResponse> responseProvider;
 
+  /** Field description */
+  private SecuritySystem securitySystem;
+
   /** Field description */
   private UserDAO userDAO;