From af3a1846963a160223ebac8fbf0041a62c8487d8 Mon Sep 17 00:00:00 2001
From: Bryan Roe <git.bryan.roe@techsavvydude.com>
Date: Tue, 1 Dec 2020 14:48:59 -0800
Subject: [PATCH] Added system language query to Windows Service Installer

---
 meshservice/ServiceMain.c |  9 +++++-
 microstack/ILibParsers.c  | 65 ++++++++++++++++++++++++---------------
 microstack/ILibParsers.h  |  1 +
 3 files changed, 49 insertions(+), 26 deletions(-)

diff --git a/meshservice/ServiceMain.c b/meshservice/ServiceMain.c
index dcc218d..051560b 100644
--- a/meshservice/ServiceMain.c
+++ b/meshservice/ServiceMain.c
@@ -1041,6 +1041,11 @@ INT_PTR CALLBACK DialogHandler(HWND hDlg, UINT message, WPARAM wParam, LPARAM lP
 	case WM_INITDIALOG:
 		{
 			char selfexe[_MAX_PATH];
+			char *lang = NULL;
+			void *chain = ILibCreateChain();
+			ILibChain_PartialStart(chain);
+			duk_context *ctx = ILibDuktape_ScriptContainer_InitializeJavaScriptEngineEx(0, 0, chain, NULL, NULL, "", NULL, NULL, chain);
+			if (duk_peval_string(ctx, "require('util-language').current;") == 0) { lang = (char*)duk_safe_to_string(ctx, -1); }
 
 			// Get current executable path
 			WCHAR wselfexe[MAX_PATH];
@@ -1168,7 +1173,9 @@ INT_PTR CALLBACK DialogHandler(HWND hDlg, UINT message, WPARAM wParam, LPARAM lP
 			}
 			SetWindowTextA(GetDlgItem(hDlg, IDC_STATUSTEXT), txt);
 			if (mshfile != NULL) { free(mshfile); }
-
+			Duktape_SafeDestroyHeap(ctx);
+			ILibStopChain(chain);
+			ILibStartChain(chain);
 			return (INT_PTR)TRUE;
 		}
 	case WM_COMMAND:
diff --git a/microstack/ILibParsers.c b/microstack/ILibParsers.c
index 69d679a..3cb1a2d 100644
--- a/microstack/ILibParsers.c
+++ b/microstack/ILibParsers.c
@@ -990,6 +990,7 @@ typedef struct ILibBaseChain
 #else
 	int WatchDogTerminator[2];
 #endif
+	int preInitialized;
 	int selectTimeout;
 	void *node;
 	int lastDescriptorCount;
@@ -3623,34 +3624,16 @@ void ILibChain_RemoveWaitHandle(void *chain, HANDLE h)
 }
 #endif
 
-/*! \fn ILibStartChain(void *Chain)
-\brief Starts a Chain
-\par
-This method will use the current thread. This thread will be refered to as the
-microstack thread. All events and processing will be done on this thread. This method
-will not return until ILibStopChain is called.
-\param Chain The chain to start
-*/
-ILibExportMethod void ILibStartChain(void *Chain)
+void ILibChain_PartialStart(void *Chain)
 {
+	if (Chain == NULL) { return; }
 	ILibBaseChain *chain = (ILibBaseChain*)Chain;
 	ILibChain_Link *module;
 	ILibChain_Link_Hook *nodeHook;
 
-	fd_set readset;
-	fd_set errorset;
-	fd_set writeset;
-
 #ifdef WIN32
-	HANDLE selectHandles[FD_SETSIZE];
-	memset(selectHandles, 0, sizeof(selectHandles));
 	memset(chain->WaitHandles, 0, sizeof(chain->WaitHandles));
 #endif
-  	struct timeval tv;
-	int slct;
-	int vX;
-
-	if (Chain == NULL) { return; }
 	chain->PreSelectCount = chain->PostSelectCount = 0;
 
 #if defined(WIN32)
@@ -3662,7 +3645,7 @@ ILibExportMethod void ILibStartChain(void *Chain)
 	chain->ChainThreadID = pthread_self();
 #endif
 
-	if (gILibChain == NULL) {gILibChain = Chain;} // Set the global instance if it's not already set
+	if (gILibChain == NULL) { gILibChain = Chain; } // Set the global instance if it's not already set
 #if defined(ILibChain_WATCHDOG_TIMEOUT)
 #ifdef WIN32
 	chain->WatchDogTerminator = CreateEvent(NULL, TRUE, FALSE, NULL);
@@ -3685,10 +3668,6 @@ ILibExportMethod void ILibStartChain(void *Chain)
 	//
 	// Use this thread as if it's our own. Keep looping until we are signaled to stop
 	//
-	FD_ZERO(&readset);
-	FD_ZERO(&errorset);
-	FD_ZERO(&writeset);
-
 #if defined(_POSIX)
 	// 
 	// For posix, we need to use a pipe to force unblock the select loop
@@ -3702,6 +3681,42 @@ ILibExportMethod void ILibStartChain(void *Chain)
 #endif
 
 	chain->RunningFlag = 1;
+	chain->preInitialized = 1;
+}
+
+
+/*! \fn ILibStartChain(void *Chain)
+\brief Starts a Chain
+\par
+This method will use the current thread. This thread will be refered to as the
+microstack thread. All events and processing will be done on this thread. This method
+will not return until ILibStopChain is called.
+\param Chain The chain to start
+*/
+ILibExportMethod void ILibStartChain(void *Chain)
+{
+	ILibBaseChain *chain = (ILibBaseChain*)Chain;
+	if (Chain == NULL) { return; }
+	if (chain->preInitialized == 0) { ILibChain_PartialStart(Chain); }
+
+	ILibChain_Link *module;
+	ILibChain_Link_Hook *nodeHook;
+
+	fd_set readset;
+	fd_set errorset;
+	fd_set writeset;
+
+  	struct timeval tv;
+	int slct;
+	int vX;
+
+	//
+	// Use this thread as if it's our own. Keep looping until we are signaled to stop
+	//
+	FD_ZERO(&readset);
+	FD_ZERO(&errorset);
+	FD_ZERO(&writeset);
+
 	while (chain->TerminateFlag == 0)
 	{
 		slct = 0;
diff --git a/microstack/ILibParsers.h b/microstack/ILibParsers.h
index b31dab2..f24d69a 100644
--- a/microstack/ILibParsers.h
+++ b/microstack/ILibParsers.h
@@ -1091,6 +1091,7 @@ int ILibIsRunningOnChainThread(void* chain);
 
 	void ILibChain_InitDescriptorCount(void *chain);
 	int ILibChain_GetDescriptorCount(void *chain);
+	void ILibChain_PartialStart(void *chain);
 	ILibExportMethod void ILibStartChain(void *chain);
 	ILibExportMethod void ILibStopChain(void *chain);
 #ifdef WIN32