added resolver to simplify parsing and validating of access tokens

scm-core/src/main/java/sonia/scm/security/AccessTokenResolver.java

@@ -0,0 +1,57 @@
+/**
+ * Copyright (c) 2014, Sebastian Sdorra
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. Neither the name of SCM-Manager; nor the names of its
+ *    contributors may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * http://bitbucket.org/sdorra/scm-manager
+ *
+ */
+package sonia.scm.security;
+
+import sonia.scm.plugin.ExtensionPoint;
+
+/**
+ * AccessTokenResolver are used to parse, validate and verify an {@link AccessToken} from a {@link BearerToken}. The 
+ * resolver should be used to get an {@link AccessToken} from a {@link BearerToken}.
+ * 
+ * @author Sebastian Sdorra
+ * @since 2.0.0
+ */
+@ExtensionPoint(multi = false)
+public interface AccessTokenResolver {
+  
+  /**
+   * Resolves an {@link AccessToken} from a {@link BearerToken}. The method will throw exceptions, if the given token
+   * is expired, manipulated or invalid.
+   * 
+   * TODO specify exceptions
+   * 
+   * @param bearerToken bearer token
+   * 
+   * @return parsed {@link AccessToken}.
+   */
+  AccessToken resolve(BearerToken bearerToken);
+  
+}