windows: Use WINAPI call convention for Windows API callbacks

For x86_64 it does not actually matter, but for i686 builds the call convention
is different with WINAPI.

src/charon-svc/charon-svc.c

@@ -48,8 +48,8 @@ extern void (*dbg) (debug_t group, level_t level, char *fmt, ...);
 /**
  * Forward declaration
  */
-static DWORD service_handler(DWORD dwControl, DWORD dwEventType,
+static DWORD WINAPI service_handler(DWORD dwControl, DWORD dwEventType,
-							 LPVOID lpEventData, LPVOID lpContext);
+									LPVOID lpEventData, LPVOID lpContext);
 
 /**
  * Logging hook for library logs, using stderr output
@@ -111,7 +111,7 @@ static void update_status(DWORD state)
 /**
  * Control handler for console
  */
-static BOOL console_handler(DWORD dwCtrlType)
+static BOOL WINAPI console_handler(DWORD dwCtrlType)
 {
 	switch (dwCtrlType)
 	{
@@ -135,8 +135,8 @@ static BOOL console_handler(DWORD dwCtrlType)
 /**
  * Service handler function
  */
-static DWORD service_handler(DWORD dwControl, DWORD dwEventType,
+static DWORD WINAPI service_handler(DWORD dwControl, DWORD dwEventType,
-							 LPVOID lpEventData, LPVOID lpContext)
+									LPVOID lpEventData, LPVOID lpContext)
 {
 	switch (dwControl)
 	{
@@ -285,7 +285,7 @@ static bool switch_workingdir()
 /**
  * Service main routine when running as service
  */
-static void service_main(DWORD dwArgc, LPTSTR *lpszArgv)
+static void WINAPI service_main(DWORD dwArgc, LPTSTR *lpszArgv)
 {
 	memset(&status, 0, sizeof(status));
 	status.dwServiceType = SERVICE_WIN32_OWN_PROCESS;

src/libcharon/plugins/kernel_iph/kernel_iph_net.c

@@ -355,9 +355,11 @@ typedef struct {
 /**
  * NotifyIpInterfaceChange() callback
  */
-static void change_interface(private_kernel_iph_net_t *this,
+static void WINAPI change_interface(void *user, PMIB_IPINTERFACE_ROW row_badal,
-					MIB_IPINTERFACE_ROW_FIXUP *row, MIB_NOTIFICATION_TYPE type)
+									MIB_NOTIFICATION_TYPE type)
 {
+	private_kernel_iph_net_t *this = user;
+	MIB_IPINTERFACE_ROW_FIXUP* row = (MIB_IPINTERFACE_ROW_FIXUP*)row_badal;
 	IP_ADAPTER_ADDRESSES addrs[64], *current;
 	ULONG res, size = sizeof(addrs);
 
@@ -757,7 +759,8 @@ kernel_iph_net_t *kernel_iph_net_create()
 		.mutex = mutex_create(MUTEX_TYPE_DEFAULT),
 		.ifaces = linked_list_create(),
 	);
-
+	/* PIPINTERFACE_CHANGE_CALLBACK is not using WINAPI in MinGW, which seems
+	 * to be wrong. Force a cast to our WINAPI call */
 	res = NotifyIpInterfaceChange(AF_UNSPEC, (void*)change_interface,
 								  this, TRUE, &this->changes);
 	if (res != NO_ERROR)

src/libcharon/plugins/kernel_wfp/kernel_wfp_ipsec.c

@@ -1545,9 +1545,9 @@ static traffic_selector_t *addr2ts(FWP_IP_VERSION version, void *data,
 /**
  * FwpmNetEventSubscribe0() callback
  */
-static void event_callback(private_kernel_wfp_ipsec_t *this,
+static void WINAPI event_callback(void *user, const FWPM_NET_EVENT1 *event)
-						   const FWPM_NET_EVENT1 *event)
 {
+	private_kernel_wfp_ipsec_t *this = user;
 	traffic_selector_t *local = NULL, *remote = NULL;
 	u_int8_t protocol = 0;
 	u_int16_t from_local = 0, to_local = 65535;
@@ -1610,7 +1610,7 @@ static bool register_events(private_kernel_wfp_ipsec_t *this)
 	DWORD res;
 
 	res = FwpmNetEventSubscribe0(this->handle, &subscription,
-								 (void*)event_callback, this, &this->event);
+								 event_callback, this, &this->event);
 	if (res != ERROR_SUCCESS)
 	{
 		DBG1(DBG_KNL, "registering for WFP events failed: 0x%08x", res);

src/libcharon/plugins/socket_win/socket_win_socket.c

@@ -75,14 +75,14 @@ struct private_socket_win_socket_t {
 	/**
 	 * WSASendMsg function
 	 */
-	int (*WSASendMsg)(SOCKET, LPWSAMSG, DWORD, LPDWORD,
+	int WINAPI (*WSASendMsg)(SOCKET, LPWSAMSG, DWORD, LPDWORD,
-					  LPWSAOVERLAPPED, LPWSAOVERLAPPED_COMPLETION_ROUTINE);
+					LPWSAOVERLAPPED, LPWSAOVERLAPPED_COMPLETION_ROUTINE);
 
 	/**
 	 * WSARecvMsg function
 	 */
-	int (*WSARecvMsg)(SOCKET, LPWSAMSG, LPDWORD,
+	int WINAPI (*WSARecvMsg)(SOCKET, LPWSAMSG, LPDWORD,
-					  LPWSAOVERLAPPED, LPWSAOVERLAPPED_COMPLETION_ROUTINE);
+					LPWSAOVERLAPPED, LPWSAOVERLAPPED_COMPLETION_ROUTINE);
 };
 
 METHOD(socket_t, receiver, status_t,

src/libstrongswan/tests/test_suite.c

@@ -138,7 +138,7 @@ static DWORD main_thread;
 /**
  * APC routine invoked by main thread on worker failure
  */
-static void set_worker_failure(ULONG_PTR dwParam)
+static void WINAPI set_worker_failure(ULONG_PTR dwParam)
 {
 	worker_failed = TRUE;
 }
@@ -180,7 +180,7 @@ void test_fail_if_worker_failed()
 /**
  * Vectored exception handler
  */
-static long eh_handler(PEXCEPTION_POINTERS ei)
+static long WINAPI eh_handler(PEXCEPTION_POINTERS ei)
 {
 	char *ename;
 	bool old = FALSE;

src/libstrongswan/threading/windows/thread.c

@@ -378,8 +378,10 @@ void thread_set_active_condvar(CONDITION_VARIABLE *condvar)
 /**
  * APC to cancel a thread
  */
-static void docancel(private_thread_t *this)
+static void WINAPI docancel(ULONG_PTR dwParam)
 {
+	private_thread_t *this = (private_thread_t*)dwParam;
+
 	/* make sure cancel() does not access this anymore */
 	threads_lock->lock(threads_lock);
 	threads_lock->unlock(threads_lock);
@@ -398,7 +400,7 @@ METHOD(thread_t, cancel, void,
 		if (!this->cancel_pending)
 		{
 			this->cancel_pending = TRUE;
-			QueueUserAPC((void*)docancel, this->handle, (uintptr_t)this);
+			QueueUserAPC(docancel, this->handle, (uintptr_t)this);
 			if (this->condvar)
 			{
 				WakeAllConditionVariable(this->condvar);

src/libstrongswan/utils/utils.c

@@ -247,7 +247,7 @@ static mutex_t *sigint_mutex;
 /**
  * Control handler to catch ^C
  */
-static BOOL handler(DWORD dwCtrlType)
+static BOOL WINAPI handler(DWORD dwCtrlType)
 {
 	switch (dwCtrlType)
 	{

src/libstrongswan/utils/windows.h

@@ -116,14 +116,14 @@ char* strndup(const char *s, size_t n);
  * Provided via ws2_32
  */
 #ifndef InetNtop
-const char *inet_ntop(int af, const void *src, char *dst, socklen_t size);
+const char WINAPI *inet_ntop(int af, const void *src, char *dst, socklen_t size);
 #endif
 
 /**
  * Provided via ws2_32
  */
 #ifndef InetPton
-int inet_pton(int af, const char *src, void *dst);
+int WINAPI inet_pton(int af, const char *src, void *dst);
 #endif
 
 /**