New generic keystore file loader.

sso-samples/oidc-sso-sample/oidc-keystore-loader/pom.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.wso2.samples.is</groupId>
+        <artifactId>oidc-sso-sample</artifactId>
+        <version>4.6.0-SNAPSHOT</version>
+    </parent>
+
+    <artifactId>oidc-keystore-loader</artifactId>
+
+    <properties>
+        <maven.compiler.source>11</maven.compiler.source>
+        <maven.compiler.target>11</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+</project>

sso-samples/oidc-sso-sample/oidc-keystore-loader/src/main/org/wso2/sample/identity/KeystoreLoader.java

@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2024, WSO2 LLC. (https://www.wso2.com) All Rights Reserved.
+ *
+ * WSO2 Inc. licenses this file to you 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.
+ */
+package org.wso2.sample.identity;
+
+import java.net.URISyntaxException;
+import java.nio.file.Paths;
+import javax.servlet.ServletContextEvent;
+import javax.servlet.ServletContextListener;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+import java.util.Properties;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+/**
+ * A listener to get invoked at application deployment.
+ * This will allow us to set the carbon keystore for HTTPS communication.
+ */
+public class KeystoreLoader implements ServletContextListener {
+
+    private static final Logger LOGGER = Logger.getLogger(KeystoreLoader.class.getName());
+
+    @Override
+    public void contextInitialized(ServletContextEvent servletContextEvent) {
+        // First find keystore properties
+        final InputStream keystoreInputStream = this.getClass().getClassLoader()
+                .getResourceAsStream("keystore.properties");
+
+        if (keystoreInputStream == null) {
+            LOGGER.log(Level.SEVERE, "keystore.properties not found. Trust store properties will not be set.");
+            return;
+        }
+
+        // Load properties
+        final Properties keystoreProperties = new Properties();
+
+        try {
+            keystoreProperties.load(keystoreInputStream);
+        } catch (IOException e) {
+            LOGGER.log(Level.SEVERE, "Error while loading properties.", e);
+            return;
+        }
+
+        // Find and set keystore required for IS server communication
+        final URL resource = this.getClass().getClassLoader()
+                .getResource(keystoreProperties.getProperty("keystorename"));
+
+        if (resource != null) {
+            try {
+                String trustStorePath = Paths.get(resource.toURI()).toFile().getAbsolutePath();
+                LOGGER.log(Level.INFO, "Setting trust store path to : " + trustStorePath);
+                System.setProperty("javax.net.ssl.trustStore", trustStorePath);
+            } catch (URISyntaxException e) {
+                LOGGER.log(Level.SEVERE, "Unable to find keystore defined by properties. " +
+                        "Trust store properties will not be set.", e);
+            }
+            System.setProperty("javax.net.ssl.trustStorePassword", keystoreProperties.getProperty("keystorepassword"));
+        } else {
+            LOGGER.log(Level.INFO, "Unable to find keystore defined by properties. " +
+                    "Trust store properties will not be set.");
+        }
+    }
+
+    @Override
+    public void contextDestroyed(ServletContextEvent servletContextEvent) {
+        // Ignored
+    }
+}