OC-33 SSL / Internet Utils (#19)

Co-authored-by: EthanDevelops <git@ethanlibs.co>

2 files changed, 80 insertions, 0 deletions

diff --git a/src/main/java/cc/polyfrost/oneconfig/network/SSLStore.java b/src/main/java/cc/polyfrost/oneconfig/network/SSLStore.java
new file mode 100644
index 0000000..3b8eed2
--- /dev/null
+++ b/src/main/java/cc/polyfrost/oneconfig/network/SSLStore.java
@@ -0,0 +1,76 @@
+package cc.polyfrost.oneconfig.network;
+
+import javax.net.ssl.KeyManager;
+import javax.net.ssl.SSLContext;
+import javax.net.ssl.TrustManagerFactory;
+import java.io.BufferedInputStream;
+import java.io.InputStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.security.KeyStore;
+import java.security.SecureRandom;
+import java.security.cert.Certificate;
+import java.security.cert.CertificateFactory;
+
+/**
+ * Adds our certificate to the JavaKeyStore to avoid SSL issues.
+ */
+public class SSLStore {
+    private final CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");
+    private final KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType());
+
+    public SSLStore() throws Exception {
+        Path keyStorePath = Paths.get(System.getProperty("java.home"), "lib", "security", "cacerts");
+        this.keyStore.load(Files.newInputStream(keyStorePath),(char[])null);
+    }
+
+    /**
+     * Loads the specified SSL certificate.
+     * @param sslFile A .der filename from the resources/assets/oneconfig/ssl directory.
+     * @throws Exception Uses Exception to cover the SSL loading and generation
+     */
+    public SSLStore load(String sslFile) throws Exception {
+        InputStream certificateResource = SSLStore.class.getResourceAsStream("/assets/oneconfig/ssl/" + sslFile + ".der");
+        Throwable sslThrowable = null;
+
+        // Try to gen and load the certificate
+        try {
+            InputStream certStream = new BufferedInputStream(certificateResource);
+            Certificate generatedCertificate = this.certificateFactory.generateCertificate(certStream);
+
+            this.keyStore.setCertificateEntry(sslFile, generatedCertificate);
+        } catch (Throwable sslException) {
+            sslThrowable = sslException;
+            throw sslException;
+        } finally {
+            if (certificateResource != null) {
+                try {
+                    certificateResource.close();
+                } catch (Throwable closeException) {
+                    sslThrowable.addSuppressed(closeException);
+                }
+            } else {
+                certificateResource.close();
+            }
+        }
+        return this;
+    }
+
+    /**
+     * Generates and returns the SSLContext after the new cert has been added with SSLStore.load().
+     * @return The SSLContext generated after init.
+     * @throws Exception Uses Exception to cover the TMF init and SSLContext init.
+     */
+    public SSLContext finish() throws Exception {
+        // Initialize TrustManagerFactory with the new KeyStore once the new cert has been added
+        TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
+        trustManagerFactory.init(this.keyStore);
+
+        // Return the SSLContext after init.
+        SSLContext sslContext = SSLContext.getInstance("TLS");
+        sslContext.init((KeyManager[])null, trustManagerFactory.getTrustManagers(), (SecureRandom)null);
+
+        return sslContext;
+    }
+}
diff --git a/src/main/java/cc/polyfrost/oneconfig/utils/InternetUtils.java b/src/main/java/cc/polyfrost/oneconfig/utils/InternetUtils.java
new file mode 100644
index 0000000..aa13c96
--- /dev/null
+++ b/src/main/java/cc/polyfrost/oneconfig/utils/InternetUtils.java
@@ -0,0 +1,4 @@
+package cc.polyfrost.oneconfig.utils;
+
+public class InternetUtils {
+}