[KEYCLOAK-3261] - Properly handle apps deployed at the ROOT context

adapters/oidc/adapter-core/src/main/java/org/keycloak/adapters/authorization/AbstractPolicyEnforcer.java

@@ -253,8 +253,7 @@ public abstract class AbstractPolicyEnforcer {
     }
 
     private String getPath(Request request) {
-        String pathInfo = URI.create(request.getURI()).getPath().substring(1);
-        return pathInfo.substring(pathInfo.indexOf('/'), pathInfo.length());
+        return request.getRelativePath();
     }
 
     private Set<String> getRequiredScopes(PathConfig pathConfig, Request request) {

adapters/oidc/jaxrs-oauth-client/src/main/java/org/keycloak/jaxrs/JaxrsHttpFacade.java

@@ -66,6 +66,11 @@ public class JaxrsHttpFacade implements OIDCHttpFacade {
             return requestContext.getUriInfo().getRequestUri().toString();
         }
 
+        @Override
+        public String getRelativePath() {
+            return requestContext.getUriInfo().getPath();
+        }
+
         @Override
         public boolean isSecure() {
             return securityContext.isSecure();

adapters/oidc/servlet-oauth-client/src/main/java/org/keycloak/servlet/ServletOAuthClient.java

@@ -218,6 +218,11 @@ public class ServletOAuthClient extends KeycloakDeploymentDelegateOAuthClient {
                     return servletRequest.getRequestURL().toString();
                 }
 
+                @Override
+                public String getRelativePath() {
+                    return servletRequest.getServletPath();
+                }
+
                 @Override
                 public boolean isSecure() {
                     return servletRequest.isSecure();

adapters/oidc/spring-security/src/main/java/org/keycloak/adapters/springsecurity/facade/WrappedHttpServletRequest.java

@@ -70,6 +70,11 @@ class WrappedHttpServletRequest implements Request {
         return buf.toString();
     }
 
+    @Override
+    public String getRelativePath() {
+        return request.getServletPath();
+    }
+
     @Override
     public boolean isSecure() {
         return request.isSecure();

adapters/spi/adapter-spi/src/main/java/org/keycloak/adapters/spi/HttpFacade.java

@@ -43,6 +43,13 @@ public interface HttpFacade {
          */
         String getURI();
 
+        /**
+         * Get the request relative path.
+         *
+         * @return the request relative path
+         */
+        String getRelativePath();
+
         /**
          * HTTPS?
          *

adapters/spi/jetty-adapter-spi/src/main/java/org/keycloak/adapters/jetty/spi/JettyHttpFacade.java

@@ -78,6 +78,11 @@ public class JettyHttpFacade implements HttpFacade {
             return buf.toString();
         }
 
+        @Override
+        public String getRelativePath() {
+            return request.getServletPath();
+        }
+
         @Override
         public String getFirstParam(String param) {
             return request.getParameter(param);

adapters/spi/servlet-adapter-spi/src/main/java/org/keycloak/adapters/servlet/ServletHttpFacade.java

@@ -65,6 +65,11 @@ public class ServletHttpFacade implements HttpFacade {
             return buf.toString();
         }
 
+        @Override
+        public String getRelativePath() {
+            return request.getServletPath();
+        }
+
         @Override
         public boolean isSecure() {
             return request.isSecure();

adapters/spi/tomcat-adapter-spi/src/main/java/org/keycloak/adapters/tomcat/CatalinaHttpFacade.java

@@ -78,6 +78,11 @@ public class CatalinaHttpFacade implements HttpFacade {
             return buf.toString();
         }
 
+        @Override
+        public String getRelativePath() {
+            return request.getServletPath();
+        }
+
         @Override
         public boolean isSecure() {
             return request.isSecure();

adapters/spi/undertow-adapter-spi/src/main/java/org/keycloak/adapters/undertow/UndertowHttpFacade.java

@@ -83,6 +83,11 @@ public class UndertowHttpFacade implements HttpFacade {
             return uriBuilder.build().toString();
         }
 
+        @Override
+        public String getRelativePath() {
+            return exchange.getRelativePath();
+        }
+
         @Override
         public boolean isSecure() {
             String protocol = exchange.getRequestScheme();