check https connection

Author: cherkavi

HttpsCertificateCheck/HttpsConnectionCheck.java

@@ -0,0 +1,73 @@
+import javax.net.ssl.KeyManager;
+import javax.net.ssl.SSLContext;
+import javax.net.ssl.TrustManager;
+import javax.net.ssl.TrustManagerFactory;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.net.HttpURLConnection;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.security.*;
+import java.security.cert.CertificateException;
+
+public class HttpsConnectionCheck {
+
+    /* 
+    javac HttpsConnectionCheck.java
+    java "https://elasticsearch.devops.vantage.org" "/home/projects/temp/myTrustStore" "storepass" "https_user" "https_passw"    
+    */
+    public static void main(String[] args) {
+        String url = args[0];
+        String trustStoreFile = args[1];
+        String trustStorePassword = args[2];
+        String httpUsername = args[3];
+        String httpPassword = args[4];
+
+        System.out.println("attempt to connect to: " + url);
+        try (FileInputStream truststoreFile = new FileInputStream(trustStoreFile)) {
+            initSslContext(trustStorePassword, truststoreFile);
+        } catch (NoSuchAlgorithmException | KeyStoreException | CertificateException | IOException ex) {
+            System.err.println("can't read properly data from remote host:" + ex.getMessage());
+            System.exit(1);
+        } catch (KeyManagementException ex) {
+            System.err.println("key management exception :" + ex.getMessage());
+            System.exit(2);
+        }
+
+        HttpURLConnection urlConnection = null;
+        try {
+            URL httpsUrl = new URL(url);
+            String encoding = new sun.misc.BASE64Encoder().encode((httpUsername + ":" + httpPassword).getBytes());
+            urlConnection = (HttpURLConnection) httpsUrl.openConnection();
+            urlConnection.setRequestProperty("Authorization", "Basic " + encoding);
+            urlConnection.connect();
+
+            System.out.println(urlConnection.getResponseCode());
+        } catch (MalformedURLException ex) {
+            System.err.println("wrong url :" + ex.getMessage());
+            System.exit(3);
+        } catch (IOException ex) {
+            System.err.println("input/output exception: :" + ex.getMessage());
+            System.exit(4);
+        } finally {
+            urlConnection.disconnect();
+        }
+    }
+
+    private static void initSslContext(String trustStorePassword, FileInputStream truststoreFile) throws KeyManagementException, NoSuchAlgorithmException, KeyStoreException, IOException, CertificateException {
+        SSLContext.getInstance("TLSv1.2").init(new KeyManager[]{}, getTrustManagers(getKeyStore(trustStorePassword, truststoreFile)), new SecureRandom());
+    }
+
+    private static KeyStore getKeyStore(String trustStorePassword, FileInputStream truststoreFile) throws KeyStoreException, IOException, NoSuchAlgorithmException, CertificateException {
+        KeyStore truststore = KeyStore.getInstance(KeyStore.getDefaultType());
+        truststore.load(truststoreFile, trustStorePassword.toCharArray());
+        return truststore;
+    }
+
+    private static TrustManager[] getTrustManagers(KeyStore truststore) throws NoSuchAlgorithmException, KeyStoreException {
+        TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
+        trustManagerFactory.init(truststore);
+        TrustManager[] trustManagers = trustManagerFactory.getTrustManagers();
+        return trustManagers;
+    }
+}