JSSE: new helper functions to throw exceptions (throwWolfSSLJNIException, throwWolfSSLException), avoids calling FindClass unnecessarily, improves performance

native/com_wolfssl_WolfSSL.c

@@ -181,6 +181,32 @@ JNIEXPORT void JNICALL JNI_OnUnload(JavaVM* vm, void* reserved)
     g_verifyCallbackMethodId = NULL;
 }
 
+/**
+ * Throw WolfSSLJNIException
+ */
+void throwWolfSSLJNIException(JNIEnv* jenv, const char* msg)
+{
+    jclass excClass = (*jenv)->FindClass(jenv, "com/wolfssl/WolfSSLJNIException");
+    if (excClass == NULL) {
+        /* Unable to find exception class, give up trying to throw */
+        return;
+    }
+    (*jenv)->ThrowNew(jenv, excClass, msg);
+}
+
+/**
+ * Throw WolfSSLException
+ */
+void throwWolfSSLException(JNIEnv* jenv, const char* msg)
+{
+    jclass excClass = (*jenv)->FindClass(jenv, "com/wolfssl/WolfSSLException");
+    if (excClass == NULL) {
+        /* Unable to find exception class, give up trying to throw */
+        return;
+    }
+    (*jenv)->ThrowNew(jenv, excClass, msg);
+}
+
 JNIEXPORT jint JNICALL Java_com_wolfssl_WolfSSL_init
   (JNIEnv* jenv, jobject jcl)
 {

native/com_wolfssl_globals.h

@@ -50,4 +50,8 @@ unsigned int NativePskClientCb(WOLFSSL* ssl, const char* hint, char* identity,
 unsigned int NativePskServerCb(WOLFSSL* ssl, const char* identity,
         unsigned char* key, unsigned int max_key_len);
 
+/* Helper functions to throw exceptions */
+void throwWolfSSLJNIException(JNIEnv* jenv, const char* msg);
+void throwWolfSSLException(JNIEnv* jenv, const char* msg);
+
 #endif