From 5fa4c4c8b1974d9e0b06cc8fc9f5d8f599f9dde2 Mon Sep 17 00:00:00 2001
From: bmparson <bmparson@gmail.com>
Date: Tue, 7 Dec 2021 15:36:04 -0500
Subject: [PATCH 1/3] WINHTTP_OPTION_CLIENT_CERT_CONTEXT Null ptr fail

---
 WinHttp.au3 | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/WinHttp.au3 b/WinHttp.au3
index 216eea1..d5c7327 100644
--- a/WinHttp.au3
+++ b/WinHttp.au3
@@ -953,14 +953,18 @@ Func _WinHttpSetOption($hInternet, $iOption, $vSetting, $iSize = Default)
 			$sType = "wstr"
 			If (IsDllStruct($vSetting) Or IsPtr($vSetting)) Then Return SetError(3, 0, 0)
 			If $iSize < 1 Then $iSize = StringLen($vSetting)
-		Case $WINHTTP_OPTION_CLIENT_CERT_CONTEXT, $WINHTTP_OPTION_GLOBAL_PROXY_CREDS, $WINHTTP_OPTION_GLOBAL_SERVER_CREDS, $WINHTTP_OPTION_HTTP_VERSION, _
+		Case $WINHTTP_OPTION_GLOBAL_PROXY_CREDS, $WINHTTP_OPTION_GLOBAL_SERVER_CREDS, $WINHTTP_OPTION_HTTP_VERSION, _
 				$WINHTTP_OPTION_PROXY
 			$sType = "ptr"
 			If Not (IsDllStruct($vSetting) Or IsPtr($vSetting)) Then Return SetError(3, 0, 0)
+		Case $WINHTTP_OPTION_CLIENT_CERT_CONTEXT
+			$sType = "ptr"
+			If Not (IsDllStruct($vSetting) Or IsPtr($vSetting)) And Not $vSetting=NULL Then Return SetError(3, 0, 0)
+
 		Case Else
 			Return SetError(1, 0, 0)
 	EndSwitch
-	If $iSize < 1 Then
+	If $iSize < 1 And Not( $iOption = $WINHTTP_OPTION_CLIENT_CERT_CONTEXT And $vSetting=NULL) Then
 		If IsDllStruct($vSetting) Then
 			$iSize = DllStructGetSize($vSetting)
 		Else
@@ -1800,6 +1804,10 @@ Func _WinHttpSimpleSendSSLRequest($hConnect, $sType = Default, $sPath = Default,
 			_WinHttpSetOption(_WinHttpQueryOption(_WinHttpQueryOption($hRequest, $WINHTTP_OPTION_PARENT_HANDLE), $WINHTTP_OPTION_PARENT_HANDLE), $WINHTTP_OPTION_SECURE_PROTOCOLS, BitOR($WINHTTP_FLAG_SECURE_PROTOCOL_TLS1, $WINHTTP_FLAG_SECURE_PROTOCOL_TLS1_1, $WINHTTP_FLAG_SECURE_PROTOCOL_TLS1_2))
 			_WinHttpSendRequest($hRequest, $sHeader, $sDta)
 			If @error Then Return SetError(2, 0 * _WinHttpCloseHandle($hRequest), 0)
+		 elseif __WinHttpGetLastError() = $ERROR_WINHTTP_CLIENT_AUTH_CERT_NEEDED Then
+			   _WinHttpSetOption($hrequest, $WINHTTP_OPTION_CLIENT_CERT_CONTEXT,NULL,0)
+			   _WinHttpSendRequest($hRequest, $sHeader, $sDta)
+			   If @error Then Return SetError(2, 0 * _WinHttpCloseHandle($hRequest), 0)
 		EndIf
 	EndIf
 	_WinHttpReceiveResponse($hRequest)

From 90e3241c9e0dad915d58b1e2d4979b85183285de Mon Sep 17 00:00:00 2001
From: bmparson <bmparson@gmail.com>
Date: Tue, 7 Dec 2021 16:57:57 -0500
Subject: [PATCH 2/3] Made missing Global Constant and used that

---
 WinHttp.au3          | 2 +-
 WinHttpConstants.au3 | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/WinHttp.au3 b/WinHttp.au3
index d5c7327..247c916 100644
--- a/WinHttp.au3
+++ b/WinHttp.au3
@@ -1805,7 +1805,7 @@ Func _WinHttpSimpleSendSSLRequest($hConnect, $sType = Default, $sPath = Default,
 			_WinHttpSendRequest($hRequest, $sHeader, $sDta)
 			If @error Then Return SetError(2, 0 * _WinHttpCloseHandle($hRequest), 0)
 		 elseif __WinHttpGetLastError() = $ERROR_WINHTTP_CLIENT_AUTH_CERT_NEEDED Then
-			   _WinHttpSetOption($hrequest, $WINHTTP_OPTION_CLIENT_CERT_CONTEXT,NULL,0)
+			   _WinHttpSetOption($hrequest, $WINHTTP_OPTION_CLIENT_CERT_CONTEXT,$WINHTTP_NO_CLIENT_CERT_CONTEXT,0)
 			   _WinHttpSendRequest($hRequest, $sHeader, $sDta)
 			   If @error Then Return SetError(2, 0 * _WinHttpCloseHandle($hRequest), 0)
 		EndIf
diff --git a/WinHttpConstants.au3 b/WinHttpConstants.au3
index 891e86d..991e666 100644
--- a/WinHttpConstants.au3
+++ b/WinHttpConstants.au3
@@ -171,6 +171,8 @@ Global Const $WINHTTP_DISABLE_SPN_SERVER_PORT = 0x00000000
 Global Const $WINHTTP_ENABLE_SPN_SERVER_PORT = 0x00000001
 Global Const $WINHTTP_OPTION_SPN_MASK = $WINHTTP_ENABLE_SPN_SERVER_PORT
 
+Global Const $WINHTTP_NO_CLIENT_CERT_CONTEXT = NULL
+
 ; WinHTTP error codes  ;
 Global Const $WINHTTP_ERROR_BASE = 12000
 Global Const $ERROR_WINHTTP_OUT_OF_HANDLES = 12001

From 735438b48ea007e9821d7146f897cf7df8b2801c Mon Sep 17 00:00:00 2001
From: bmparson <68745226+bmparson@users.noreply.github.com>
Date: Wed, 8 Dec 2021 01:21:24 -0500
Subject: [PATCH 3/3] Update WinHttp.au3

---
 WinHttp.au3 | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/WinHttp.au3 b/WinHttp.au3
index 247c916..544dd5d 100644
--- a/WinHttp.au3
+++ b/WinHttp.au3
@@ -964,7 +964,7 @@ Func _WinHttpSetOption($hInternet, $iOption, $vSetting, $iSize = Default)
 		Case Else
 			Return SetError(1, 0, 0)
 	EndSwitch
-	If $iSize < 1 And Not( $iOption = $WINHTTP_OPTION_CLIENT_CERT_CONTEXT And $vSetting=NULL) Then
+	If $iSize < 1 And Not ($iOption = $WINHTTP_OPTION_CLIENT_CERT_CONTEXT And $vSetting=NULL) Then
 		If IsDllStruct($vSetting) Then
 			$iSize = DllStructGetSize($vSetting)
 		Else
@@ -1805,7 +1805,7 @@ Func _WinHttpSimpleSendSSLRequest($hConnect, $sType = Default, $sPath = Default,
 			_WinHttpSendRequest($hRequest, $sHeader, $sDta)
 			If @error Then Return SetError(2, 0 * _WinHttpCloseHandle($hRequest), 0)
 		 elseif __WinHttpGetLastError() = $ERROR_WINHTTP_CLIENT_AUTH_CERT_NEEDED Then
-			   _WinHttpSetOption($hrequest, $WINHTTP_OPTION_CLIENT_CERT_CONTEXT,$WINHTTP_NO_CLIENT_CERT_CONTEXT,0)
+			   _WinHttpSetOption($hrequest, $WINHTTP_OPTION_CLIENT_CERT_CONTEXT, $WINHTTP_NO_CLIENT_CERT_CONTEXT, 0)
 			   _WinHttpSendRequest($hRequest, $sHeader, $sDta)
 			   If @error Then Return SetError(2, 0 * _WinHttpCloseHandle($hRequest), 0)
 		EndIf