Moving Shiro modules to cadi repo

Issue-ID: AAF-380
Change-Id: If1029a16958335277ff38cdbe5662b0a14ea439f
Signed-off-by: Sai Gandham <sg481n@att.com>

5 files changed, 496 insertions, 0 deletions

diff --git a/shiro/src/main/java/org/onap/aaf/cadi/shiro/AAFAuthenticationInfo.java b/shiro/src/main/java/org/onap/aaf/cadi/shiro/AAFAuthenticationInfo.java
new file mode 100644
index 0000000..a1d304b
--- /dev/null
+++ b/shiro/src/main/java/org/onap/aaf/cadi/shiro/AAFAuthenticationInfo.java
@@ -0,0 +1,90 @@
+/**
+ * ============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.shiro;
+
+import java.nio.ByteBuffer;
+import java.security.NoSuchAlgorithmException;
+import java.security.SecureRandom;
+
+import org.apache.shiro.authc.AuthenticationInfo;
+import org.apache.shiro.authc.AuthenticationToken;
+import org.apache.shiro.authc.UsernamePasswordToken;
+import org.apache.shiro.subject.PrincipalCollection;
+import org.onap.aaf.cadi.Access;
+import org.onap.aaf.cadi.Hash;
+import org.onap.aaf.cadi.Access.Level;
+
+public class AAFAuthenticationInfo implements AuthenticationInfo {
+	private static final long serialVersionUID = -1502704556864321020L;
+	// We assume that Shiro is doing Memory Only, and this salt is not needed cross process
+	private final static int salt = new SecureRandom().nextInt(); 
+
+	private final AAFPrincipalCollection apc;
+	private final byte[] hash;
+	private Access access;
+
+	public AAFAuthenticationInfo(Access access, String username, String password) {
+		this.access = access;
+		apc = new AAFPrincipalCollection(username);
+		hash = getSaltedCred(password);
+	}
+	@Override
+	public byte[] getCredentials() {
+		access.log(Level.DEBUG, "AAFAuthenticationInfo.getCredentials");
+		return hash;
+	}
+
+	@Override
+	public PrincipalCollection getPrincipals() {
+		access.log(Level.DEBUG, "AAFAuthenticationInfo.getPrincipals");
+		return apc;
+	}
+
+	public boolean matches(AuthenticationToken atoken) {
+		if(atoken instanceof UsernamePasswordToken) {
+			UsernamePasswordToken upt = (UsernamePasswordToken)atoken;
+			if(apc.getPrimaryPrincipal().getName().equals(upt.getPrincipal())) {
+				byte[] newhash = getSaltedCred(new String(upt.getPassword()));
+				if(newhash.length==hash.length) {
+					for(int i=0;i<hash.length;++i) {
+						if(hash[i]!=newhash[i]) {
+							return false;
+						}
+					}
+					return true;
+				}
+			}
+		}
+		return false;
+	}
+	
+	private byte[] getSaltedCred(String password) {
+		byte[] pbytes = password.getBytes();
+		ByteBuffer bb = ByteBuffer.allocate(pbytes.length+Integer.SIZE/8);
+		bb.asIntBuffer().put(salt);
+		bb.put(password.getBytes());
+		try {
+			return Hash.hashSHA256(bb.array());
+		} catch (NoSuchAlgorithmException e) {
+			return new byte[0]; // should never get here
+		}
+	}
+}
diff --git a/shiro/src/main/java/org/onap/aaf/cadi/shiro/AAFAuthorizationInfo.java b/shiro/src/main/java/org/onap/aaf/cadi/shiro/AAFAuthorizationInfo.java
new file mode 100644
index 0000000..bfdc6bf
--- /dev/null
+++ b/shiro/src/main/java/org/onap/aaf/cadi/shiro/AAFAuthorizationInfo.java
@@ -0,0 +1,94 @@
+/**
+ * ============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.shiro;
+
+import java.security.Principal;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+
+import org.apache.shiro.authz.AuthorizationInfo;
+import org.apache.shiro.authz.Permission;
+import org.onap.aaf.cadi.Access;
+import org.onap.aaf.cadi.Access.Level;
+
+/**
+ * We treat "roles" and "permissions" in a similar way for first pass.
+ * 
+ * @author JonathanGathman
+ *
+ */
+public class AAFAuthorizationInfo implements AuthorizationInfo {
+	private static final long serialVersionUID = -4805388954462426018L;
+	private Access access;
+	private Principal bait;
+	private List<org.onap.aaf.cadi.Permission> pond;
+	private ArrayList<String> sPerms;
+	private ArrayList<Permission> oPerms;
+
+	public AAFAuthorizationInfo(Access access, Principal bait, List<org.onap.aaf.cadi.Permission> pond) {
+		this.access = access;
+		this.bait = bait;
+		this.pond = pond;
+		sPerms=null;
+		oPerms=null;
+	}
+	
+	public Principal principal() {
+		return bait;
+	}
+	
+	@Override
+	public Collection<Permission> getObjectPermissions() {
+		access.log(Level.DEBUG, "AAFAuthorizationInfo.getObjectPermissions");
+		synchronized(bait) {
+			if(oPerms == null) {
+				oPerms = new ArrayList<Permission>(); 
+				for(final org.onap.aaf.cadi.Permission p : pond) {
+					oPerms.add(new AAFShiroPermission(p));
+				}
+			}
+		}
+		return oPerms;
+	}
+
+	@Override
+	public Collection<String> getRoles() {
+		access.log(Level.DEBUG, "AAFAuthorizationInfo.getRoles");
+		// Until we decide to make Roles available, tie into String based permissions.
+		return getStringPermissions();
+	}
+
+	@Override
+	public Collection<String> getStringPermissions() {
+		access.log(Level.DEBUG, "AAFAuthorizationInfo.getStringPermissions");
+		synchronized(bait) {
+			if(sPerms == null) {
+				sPerms = new ArrayList<String>(); 
+				for(org.onap.aaf.cadi.Permission p : pond) {
+					sPerms.add(p.getKey());
+				}
+			}
+		}
+		return sPerms;
+	}
+
+}
diff --git a/shiro/src/main/java/org/onap/aaf/cadi/shiro/AAFPrincipalCollection.java b/shiro/src/main/java/org/onap/aaf/cadi/shiro/AAFPrincipalCollection.java
new file mode 100644
index 0000000..145968d
--- /dev/null
+++ b/shiro/src/main/java/org/onap/aaf/cadi/shiro/AAFPrincipalCollection.java
@@ -0,0 +1,125 @@
+/**
+ * ============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.shiro;
+
+import java.security.Principal;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Set;
+
+import org.apache.shiro.subject.PrincipalCollection;
+
+public class AAFPrincipalCollection implements PrincipalCollection {
+	private static final long serialVersionUID = 558246013419818831L;
+	private static final Set<String> realmSet;
+	private final Principal principal;
+	private List<Principal> list=null;
+	private Set<Principal> set=null;
+
+	static {
+		realmSet = new HashSet<String>();
+		realmSet.add(AAFRealm.AAF_REALM);
+	}
+	
+	public AAFPrincipalCollection(Principal p) {
+		principal = p;
+	}
+
+	public AAFPrincipalCollection(final String principalName) {
+		principal = 	new Principal() {
+			private final String name = principalName;
+			@Override
+			public String getName() {
+				return name;
+			}
+		};
+	}
+
+	@Override
+	public Iterator<Principal> iterator() {
+		return null;
+	}
+
+	@Override
+	public List<Principal> asList() {
+		if(list==null) {
+			list = new ArrayList<Principal>();
+		}
+		list.add(principal);
+		return list;
+	}
+
+	@Override
+	public Set<Principal> asSet() {
+		if(set==null) {
+			set = new HashSet<Principal>();
+		}
+		set.add(principal);
+		return set;
+	}
+
+	@SuppressWarnings("unchecked")
+	@Override
+	public <T> Collection<T> byType(Class<T> cls) {
+		Collection<T> coll = new ArrayList<T>();
+		if(cls.isAssignableFrom(Principal.class)) {
+			coll.add((T)principal);
+		}
+		return coll;
+	}
+
+	@Override
+	public Collection<Principal> fromRealm(String realm) {
+		if(AAFRealm.AAF_REALM.equals(realm)) {
+			return asList();
+		} else {
+			return new ArrayList<Principal>();
+		}
+	}
+
+	@Override
+	public Principal getPrimaryPrincipal() {
+		return principal;
+	}
+
+	@Override
+	public Set<String> getRealmNames() {
+		return realmSet;
+	}
+
+	@Override
+	public boolean isEmpty() {
+		return principal==null;
+	}
+
+	@SuppressWarnings("unchecked")
+	@Override
+	public <T> T oneByType(Class<T> cls) {
+		if(cls.isAssignableFrom(Principal.class)) {
+			return (T)principal;
+		}
+		return null;
+	}
+
+}
diff --git a/shiro/src/main/java/org/onap/aaf/cadi/shiro/AAFRealm.java b/shiro/src/main/java/org/onap/aaf/cadi/shiro/AAFRealm.java
new file mode 100644
index 0000000..006547a
--- /dev/null
+++ b/shiro/src/main/java/org/onap/aaf/cadi/shiro/AAFRealm.java
@@ -0,0 +1,142 @@
+/**
+ * ============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.shiro;
+
+import java.io.IOException;
+import java.security.Principal;
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.List;
+
+import org.apache.shiro.authc.AuthenticationException;
+import org.apache.shiro.authc.AuthenticationInfo;
+import org.apache.shiro.authc.AuthenticationToken;
+import org.apache.shiro.authc.UsernamePasswordToken;
+import org.apache.shiro.realm.AuthorizingRealm;
+import org.apache.shiro.subject.PrincipalCollection;
+import org.onap.aaf.cadi.Access.Level;
+import org.onap.aaf.cadi.CadiException;
+import org.onap.aaf.cadi.LocatorException;
+import org.onap.aaf.cadi.Permission;
+import org.onap.aaf.cadi.PropAccess;
+import org.onap.aaf.cadi.aaf.v2_0.AAFAuthn;
+import org.onap.aaf.cadi.aaf.v2_0.AAFCon;
+import org.onap.aaf.cadi.aaf.v2_0.AAFLurPerm;
+import org.onap.aaf.cadi.config.Config;
+import org.onap.aaf.misc.env.APIException;
+
+public class AAFRealm extends AuthorizingRealm {
+	public static final String AAF_REALM = "AAFRealm";
+	
+	private PropAccess access;
+	private AAFCon<?> acon;
+	private AAFAuthn<?> authn;
+	private HashSet<Class<? extends AuthenticationToken>> supports;
+	private AAFLurPerm authz;
+	
+
+	/**
+	 * 
+	 * There appears to be no configuration objects or references available for CADI to start with.
+	 *  
+	 */
+	public AAFRealm () {
+		access = new PropAccess(); // pick up cadi_prop_files from VM_Args
+		String cadi_prop_files = access.getProperty(Config.CADI_PROP_FILES);
+		if(cadi_prop_files==null) {
+			String msg = Config.CADI_PROP_FILES + " in VM Args is required to initialize AAFRealm.";
+			access.log(Level.INIT,msg);
+			throw new RuntimeException(msg);
+		} else {
+			try {
+				acon = AAFCon.newInstance(access);
+				authn = acon.newAuthn();
+				authz = acon.newLur(authn);
+			} catch (APIException | CadiException | LocatorException e) {
+				String msg = "Cannot initiate AAFRealm";
+				access.log(Level.INIT,msg,e.getMessage());
+				throw new RuntimeException(msg,e);
+			}
+		}
+		supports = new HashSet<Class<? extends AuthenticationToken>>();
+		supports.add(UsernamePasswordToken.class);
+	}
+
+	@Override
+	protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
+		access.log(Level.DEBUG, "AAFRealm.doGetAuthenticationInfo",token);
+		
+		final UsernamePasswordToken upt = (UsernamePasswordToken)token;
+		String password=new String(upt.getPassword());
+		String err;
+		try {
+			err = authn.validate(upt.getUsername(),password);
+		} catch (IOException|CadiException e) {
+			err = "Credential cannot be validated";
+			access.log(e, err);
+		}
+		
+		if(err != null) {
+			access.log(Level.DEBUG, err);
+			throw new AuthenticationException(err);
+		}
+
+	    return new AAFAuthenticationInfo(
+	    		access,
+	    		upt.getUsername(),
+	    		password
+	    );
+	}
+
+	@Override
+	protected void assertCredentialsMatch(AuthenticationToken atoken, AuthenticationInfo ai)throws AuthenticationException {
+		if(ai instanceof AAFAuthenticationInfo) {
+			if(!((AAFAuthenticationInfo)ai).matches(atoken)) {
+				throw new AuthenticationException("Credentials do not match");
+			}
+		} else {
+			throw new AuthenticationException("AuthenticationInfo is not an AAFAuthenticationInfo");
+		}
+	}
+
+
+	@Override
+	protected AAFAuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
+		access.log(Level.DEBUG, "AAFRealm.doGetAuthenthorizationInfo");
+		Principal bait = (Principal)principals.getPrimaryPrincipal();
+		List<Permission> pond = new ArrayList<Permission>();
+		authz.fishAll(bait,pond);
+		
+		return new AAFAuthorizationInfo(access,bait,pond);
+       
+	}
+
+	@Override
+	public boolean supports(AuthenticationToken token) {
+		return supports.contains(token.getClass());
+	}
+
+	@Override
+	public String getName() {
+		return AAF_REALM;
+	}
+
+}
diff --git a/shiro/src/main/java/org/onap/aaf/cadi/shiro/AAFShiroPermission.java b/shiro/src/main/java/org/onap/aaf/cadi/shiro/AAFShiroPermission.java
new file mode 100644
index 0000000..a348a04
--- /dev/null
+++ b/shiro/src/main/java/org/onap/aaf/cadi/shiro/AAFShiroPermission.java
@@ -0,0 +1,45 @@
+/**
+ * ============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.shiro;
+
+import org.apache.shiro.authz.Permission;
+
+public class AAFShiroPermission implements Permission {
+	private org.onap.aaf.cadi.Permission perm;
+	public AAFShiroPermission(org.onap.aaf.cadi.Permission perm) {
+		this.perm = perm;
+	}
+	@Override
+	public boolean implies(Permission sp) {
+		if(sp instanceof AAFShiroPermission) {
+			if(perm.match(((AAFShiroPermission)sp).perm)){
+				return true;
+			}
+		}
+		return false;
+	}
+	
+	@Override
+	public String toString() {
+		return perm.toString();
+	}
+
+}