JNI: wrap wolfSSL_SessionIsSetup() in WolfSSLSession, needs wolfSSL > 5.7.0 or WOLFSSL_PR7430_PATCH_APPLIED defined

native/com_wolfssl_WolfSSLSession.c

@@ -1420,6 +1420,34 @@ JNIEXPORT jlong JNICALL Java_com_wolfssl_WolfSSLSession_get1Session
     return (jlong)(uintptr_t)dup;
 }
 
+JNIEXPORT jint JNICALL Java_com_wolfssl_WolfSSLSession_wolfsslSessionIsSetup
+  (JNIEnv* jenv, jclass jcl, jlong sessionPtr)
+{
+#if (LIBWOLFSSL_VERSION_HEX > 0x05007000) || \
+    defined(WOLFSSL_PR7430_PATCH_APPLIED)
+    int ret;
+    WOLFSSL_SESSION* session = (WOLFSSL_SESSION*)(uintptr_t)sessionPtr;
+    (void)jcl;
+
+    if (jenv == NULL) {
+        return 0;
+    }
+
+    /* wolfSSL_SessionIsSetup() was added after wolfSSL 5.7.0 in PR
+     * 7430. Version checked above must be greater than 5.7.0 or patch
+     * from this PR must be applied and WOLFSSL_PR7430_PATCH_APPLIED defined
+     * when compiling this JNI wrapper */
+    ret = wolfSSL_SessionIsSetup(session);
+
+    return (jint)ret;
+#else
+    (void)jenv;
+    (void)jcl;
+    (void)sessionPtr;
+    return (jint)NOT_COMPILED_IN;
+#endif
+}
+
 JNIEXPORT void JNICALL Java_com_wolfssl_WolfSSLSession_freeNativeSession
   (JNIEnv* jenv, jclass jcl, jlong sessionPtr)
 {

native/com_wolfssl_WolfSSLSession.h

@@ -159,6 +159,14 @@ JNIEXPORT jlong JNICALL Java_com_wolfssl_WolfSSLSession_getSession
 JNIEXPORT jlong JNICALL Java_com_wolfssl_WolfSSLSession_get1Session
   (JNIEnv *, jobject, jlong);
 
+/*
+ * Class:     com_wolfssl_WolfSSLSession
+ * Method:    wolfsslSessionIsSetup
+ * Signature: (J)I
+ */
+JNIEXPORT jint JNICALL Java_com_wolfssl_WolfSSLSession_wolfsslSessionIsSetup
+  (JNIEnv *, jclass, jlong);
+
 /*
  * Class:     com_wolfssl_WolfSSLSession
  * Method:    freeNativeSession

src/java/com/wolfssl/WolfSSLSession.java

@@ -262,6 +262,7 @@ public class WolfSSLSession {
     private native int setSession(long ssl, long session);
     private native long getSession(long ssl);
     private native long get1Session(long ssl);
+    private static native int wolfsslSessionIsSetup(long ssl);
     private static native void freeNativeSession(long session);
     private native byte[] getSessionID(long session);
     private native int setServerID(long ssl, byte[] id, int len, int newSess);
@@ -1364,6 +1365,30 @@ public class WolfSSLSession {
         }
     }
 
+    /**
+     * Check if native WOLFSSL_SESSION has been set up or not.
+     *
+     * This method is static and does not check active state since this
+     * takes a native pointer and has no interaction with the rest of this
+     * object.
+     *
+     * @param session pointer to native WOLFSSL_SESSION structure. May be
+     *        obtained from getSession().
+     *
+     * @return 1 if session has been set up, otherwise 0 if not set up. May
+     *         return WolfSSL.NOT_COMPILED_IN if native wolfSSL does not have
+     *         wolfSSL_SessionIsSetup() compiled in. This API was added
+     *         after the wolfSSL 5.7.0 release.
+     */
+    public static int sessionIsSetup(long session) {
+
+        if (session == 0) {
+            return 0;
+        }
+
+        return wolfsslSessionIsSetup(session);
+    }
+
     /**
      * Free the native WOLFSSL_SESSION structure pointed to be session.
      *