Add portability and consistency fixes for C API, remove cruft, slight internal restructuring

src/Events.hpp

@@ -0,0 +1,106 @@
+/*
+ * Copyright (c)2013-2020 ZeroTier, Inc.
+ *
+ * Use of this software is governed by the Business Source License included
+ * in the LICENSE.TXT file in the project's root directory.
+ *
+ * Change Date: 2024-01-01
+ *
+ * On the date above, in accordance with the Business Source License, use
+ * of this software will be governed by version 2.0 of the Apache License.
+ */
+/****/
+
+/**
+ * @file
+ *
+ * Header for callback event processing logic
+ */
+
+#ifndef ZT_EVENTS_HPP
+#define ZT_EVENTS_HPP
+
+#include <string>
+
+#include "ZeroTierSockets.h"
+
+#ifdef SDK_JNI
+	#include <jni.h>
+#endif
+namespace ZeroTier {
+
+#define ZTS_STATE_NODE_RUNNING              0x01
+#define ZTS_STATE_STACK_RUNNING             0x02
+#define ZTS_STATE_NET_SERVICE_RUNNING       0x04
+#define ZTS_STATE_CALLBACKS_RUNNING         0x08
+#define ZTS_STATE_FREE_CALLED               0x10
+
+#ifdef SDK_JNI
+	// References to JNI objects and VM kept for future callbacks
+	extern JavaVM *jvm;
+	extern jobject objRef;
+	extern jmethodID _userCallbackMethodRef;
+#endif
+
+/**
+ * How often callback messages are assembled and/or sent
+ */
+#define ZTS_CALLBACK_PROCESSING_INTERVAL 25
+
+/**
+ * Enqueue an event to be sent to the user application
+ */
+void _enqueueEvent(int16_t eventCode, void *arg);
+
+/**
+ * Send callback message to user application
+ */
+void _passDequeuedEventToUser(struct ::zts_callback_msg *msg);
+
+/**
+ * Free memory occupied by callback structures
+ */
+void _freeEvent(struct ::zts_callback_msg *msg);
+
+/**
+ * Return whether a callback method has been set
+ */
+bool _isCallbackRegistered();
+
+/**
+ * Clear pointer reference to user-provided callback function
+ */
+void _clearRegisteredCallback();
+
+/**
+ * Return whether service operation can be performed at this time
+ */
+int _canPerformServiceOperation();
+
+/**
+ * Set internal state flags
+ */
+void _setState(uint8_t newFlags);
+
+/**
+ * Clear internal state flags
+ */
+void _clrState(uint8_t newFlags);
+
+/**
+ * Get internal state flags
+ */
+bool _getState(uint8_t testFlags);
+
+#ifdef __WINDOWS__
+DWORD WINAPI _runCallbacks(LPVOID thread_id);
+#else
+/**
+ * Event callback thread
+ */
+void *_runCallbacks(void *thread_id);
+#endif
+
+} // namespace ZeroTier
+
+#endif // _H