CADI Enforcement Point

Issue-ID: AAF-623
Change-Id: Ib49b68fe8323af895b80a90537e7d1c75bc46b70
Signed-off-by: Instrumental <jonathan.gathman@att.com>

4 files changed, 219 insertions, 18 deletions

diff --git a/cadi/core/src/main/java/org/onap/aaf/cadi/config/Config.java b/cadi/core/src/main/java/org/onap/aaf/cadi/config/Config.java
index 3d668c42..0e4f72b8 100644
--- a/cadi/core/src/main/java/org/onap/aaf/cadi/config/Config.java
+++ b/cadi/core/src/main/java/org/onap/aaf/cadi/config/Config.java
@@ -103,7 +103,10 @@ public class Config {
     public static final String CADI_PROTOCOLS = "cadi_protocols";
     public static final String CADI_NOAUTHN = "cadi_noauthn";
     public static final String CADI_LOC_LIST = "cadi_loc_list";
+    
+    // Special Behaviors
     public static final String CADI_BATH_CONVERT = "cadi_bath_convert";
+    public static final String CADI_API_ENFORCEMENT = "cadi_api_enforcement";
     
     public static final String CADI_USER_CHAIN_TAG = "cadi_user_chain";
     public static final String CADI_USER_CHAIN = "USER_CHAIN";
@@ -410,7 +413,7 @@ public class Config {
                     oadtClss = Class.forName(OAUTH_DIRECT_TAF);
                 } catch (ClassNotFoundException e1) {
                     oadtClss = null;
-                    access.log(Level.INIT, e1);
+                    access.log(Level.DEBUG, e1);
                 }
                 if (additionalTafLurs!=null && additionalTafLurs.length>0 && (oadtClss!=null && additionalTafLurs[0].getClass().isAssignableFrom(oadtClss))) {
                     htlist.add((HttpTaf)additionalTafLurs[0]);
diff --git a/cadi/core/src/main/java/org/onap/aaf/cadi/filter/CadiApiEnforcementFilter.java b/cadi/core/src/main/java/org/onap/aaf/cadi/filter/CadiApiEnforcementFilter.java
new file mode 100644
index 00000000..495131b9
--- /dev/null
+++ b/cadi/core/src/main/java/org/onap/aaf/cadi/filter/CadiApiEnforcementFilter.java
@@ -0,0 +1,132 @@
+/**
+ * ============LICENSE_START====================================================
+ * org.onap.aaf
+ * ===========================================================================
+ * Copyright (c) 2018 AT&T Intellectual Property. All rights reserved.
+ * ===========================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END====================================================
+ */
+package org.onap.aaf.cadi.filter;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.TreeMap;
+
+import javax.servlet.Filter;
+import javax.servlet.FilterChain;
+import javax.servlet.FilterConfig;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+import javax.servlet.http.HttpServletRequest;
+
+import org.onap.aaf.cadi.Access;
+import org.onap.aaf.cadi.Access.Level;
+import org.onap.aaf.cadi.ServletContextAccess;
+import org.onap.aaf.cadi.config.Config;
+import org.onap.aaf.cadi.util.Split;
+
+/**
+ * This filter allows one to protect the APIs from data stored in AAF
+ * 
+ * @author Instrumental(Jonathan)
+ */
+public class CadiApiEnforcementFilter implements Filter {
+	private String type;
+	private Map<String,List<String>> publicPaths;
+	private Access access;
+			
+	
+	public CadiApiEnforcementFilter(Access access, String enforce) throws ServletException {
+		this.access = access;
+		init(enforce);
+	}
+
+
+	@Override
+	public void init(FilterConfig fc) throws ServletException {
+		init(fc.getInitParameter(Config.CADI_API_ENFORCEMENT));
+        // need the Context for Logging, instantiating ClassLoader, etc
+        ServletContextAccess sca=new ServletContextAccess(fc); 
+        if (access==null) {
+            access = sca;
+        }
+	}
+	
+	private void init(final String ptypes) throws ServletException {
+		if(ptypes==null) {
+			throw new ServletException("CadiApiEnforcement requires " + Config.CADI_API_ENFORCEMENT + " property");
+		}
+		String[] full = Split.splitTrim(';', ptypes);
+		if(full.length==0) {
+			throw new ServletException(Config.CADI_API_ENFORCEMENT + " property is empty");
+		}
+		if(full.length>0) {
+			type=full[0];
+		}
+		publicPaths = new TreeMap<String,List<String>>();
+		if(full.length>1) {
+			for(int i=1;i<full.length;++i) {
+				String pubArray[] = Split.split(':', full[i]);
+				if(pubArray.length==2) {
+					List<String> ls = publicPaths.get(pubArray[0]);
+					if(ls==null) {
+						ls = new ArrayList<String>();
+						publicPaths.put(pubArray[0], ls);
+					}
+					ls.add(pubArray[1]);
+				}
+			}
+		}
+	}
+
+
+	@Override
+	public void doFilter(ServletRequest req, ServletResponse resp, FilterChain fc) throws IOException, ServletException {
+		HttpServletRequest hreq = (HttpServletRequest)req;
+		final String meth = hreq.getMethod();
+		final String path = hreq.getContextPath()+hreq.getPathInfo();
+		List<String> list = publicPaths.get(meth);
+		if(list!=null) {
+			for( String p : publicPaths.get(meth)) {
+				if(path.startsWith(p)) {
+					access.printf(Level.INFO, "%s accessed public API %s %s\n",
+							hreq.getUserPrincipal().getName(),
+							meth,
+							path);
+						fc.doFilter(req, resp);
+						return;
+				}
+			}
+		}
+		if(hreq.isUserInRole(type + '|'+path+'|'+meth)) {
+			access.printf(Level.INFO, "%s is allowed access to %s %s\n",
+				hreq.getUserPrincipal().getName(),
+				meth,
+				path);
+			fc.doFilter(req, resp);
+		} else {
+			access.printf(Level.AUDIT, "%s is denied access to %s %s\n",
+					hreq.getUserPrincipal().getName(),
+					meth,
+					path);
+		}
+	}
+
+	@Override
+	public void destroy() {
+	}
+}
diff --git a/cadi/core/src/main/java/org/onap/aaf/cadi/filter/CadiFilter.java b/cadi/core/src/main/java/org/onap/aaf/cadi/filter/CadiFilter.java
index cd48556b..2305eacd 100644
--- a/cadi/core/src/main/java/org/onap/aaf/cadi/filter/CadiFilter.java
+++ b/cadi/core/src/main/java/org/onap/aaf/cadi/filter/CadiFilter.java
@@ -71,7 +71,7 @@ public class CadiFilter implements Filter {
     private static List<Pair> mapPairs;
     private Access access;
     private Object[] additionalTafLurs;
-    private Filter oauthFilter;
+    private SideChain sideChain;
     private static int count=0;
     
     public Lur getLur() {
@@ -140,6 +140,7 @@ public class CadiFilter implements Filter {
 
     @SuppressWarnings("unchecked")
     private void init(Get getter) throws ServletException {
+       sideChain = new SideChain();
         // Start with the assumption of "Don't trust anyone".
        TrustChecker tc = TrustChecker.NOTRUST; // default position
        try {
@@ -158,22 +159,9 @@ public class CadiFilter implements Filter {
            Class<Filter> cf=null;
            try {
                cf= (Class<Filter>) Class.forName("org.onap.aaf.cadi.oauth.OAuthFilter");
-               oauthFilter = cf.newInstance();
+               sideChain.add(cf.newInstance());
            } catch (ClassNotFoundException e) {
-               oauthFilter = new Filter() { // Null Filter
-                    @Override
-                    public void destroy() {
-                    }
-    
-                    @Override
-                    public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain)throws IOException, ServletException {
-                        chain.doFilter(req, resp);
-                    }
-    
-                    @Override
-                    public void init(FilterConfig arg0) throws ServletException {
-                    }
-               };
+        	   access.log(Level.DEBUG, "OAuthFilter not enabled");
            }
        } catch (Exception e) {
            access.log(Level.INIT, "AAFTrustChecker cannot be loaded",e.getMessage());
@@ -238,6 +226,11 @@ public class CadiFilter implements Filter {
             }
         }
 
+        // Add API Enforcement Point
+        String enforce = getter.get(Config.CADI_API_ENFORCEMENT, null, true); 
+        if(enforce!=null && enforce.length()>0) {
+        	sideChain.add(new CadiApiEnforcementFilter(access,enforce));
+        }
         // Remove Getter
         getter = Get.NULL;
     }
@@ -287,7 +280,7 @@ public class CadiFilter implements Filter {
                     CadiWrap cw = new CadiWrap(hreq, tresp, httpChecker.getLur(),getConverter(hreq));
                     if (httpChecker.notCadi(cw, hresp)) {
                         startCode=System.nanoTime();
-                        oauthFilter.doFilter(cw,response,chain);
+                        sideChain.doFilter(cw,response,chain);
                         code = Timing.millis(startCode);
                     }
                 }
diff --git a/cadi/core/src/main/java/org/onap/aaf/cadi/filter/SideChain.java b/cadi/core/src/main/java/org/onap/aaf/cadi/filter/SideChain.java
new file mode 100644
index 00000000..8283b4dd
--- /dev/null
+++ b/cadi/core/src/main/java/org/onap/aaf/cadi/filter/SideChain.java
@@ -0,0 +1,73 @@
+/**
+ * ============LICENSE_START====================================================
+ * org.onap.aaf
+ * ===========================================================================
+ * Copyright (c) 2018 AT&T Intellectual Property. All rights reserved.
+ * ===========================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END====================================================
+ */
+
+package org.onap.aaf.cadi.filter;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.servlet.Filter;
+import javax.servlet.FilterChain;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+import javax.xml.ws.Holder;
+
+/**
+ * Add various Filters by CADI Property not in the official Chain
+ * 
+ * @author Instrumental(Jonathan)
+ *
+ */
+public class SideChain {
+	private List<Filter> sideChain;
+	
+	public SideChain() {
+		sideChain = new ArrayList<Filter>();
+	}
+	
+	public void add(Filter f) {
+		sideChain.add(f);
+	}
+	
+    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)throws IOException, ServletException {
+    	final Holder<Boolean> hbool = new Holder<Boolean>(Boolean.TRUE);
+    	FilterChain truth = new FilterChain() {
+			@Override
+			public void doFilter(ServletRequest request, ServletResponse response) throws IOException, ServletException {
+			   hbool.value=Boolean.TRUE;
+			}
+			public String toString() {
+				return hbool.value.toString();
+			}
+    	};
+    	for(Filter f : sideChain) {
+			hbool.value=Boolean.FALSE;
+    		f.doFilter(request, response, truth);
+    		if(!hbool.value) {
+    			return;
+    		}
+    	}
+    	if(hbool.value) {
+    		chain.doFilter(request, response);
+    	}
+    }
+}