TUN-4755: Add a windows msi release option to Make

Makefile

@@ -227,6 +227,10 @@ homebrew-release: homebrew-upload
 release: bin/equinox
 	bin/equinox release $(EQUINOX_FLAGS) -- $(VERSION_FLAGS) $(IMPORT_PATH)/cmd/cloudflared
 
+.PHONY: build-msi
+build-msi:
+	wixl --define Version=$(VERSION) --define Path=$(EXECUTABLE_PATH) cloudflared.wxs
+
 .PHONY: github-release
 github-release: cloudflared
 	python3 github_release.py --path $(EXECUTABLE_PATH) --release-version $(VERSION)

cloudflared.wxs

@@ -0,0 +1,62 @@
+<?xml version="1.0"?>
+
+<?if $(var.Platform)="x86"?>
+    <?define Program_Files="ProgramFilesFolder"?>
+<?else?>
+    <?define Program_Files="ProgramFiles64Folder"?>
+<?endif?>
+<?ifndef var.Version?>
+    <?error Undefined Version variable?>
+<?endif?>
+<?ifndef var.Path?>
+    <?error Undefined Path variable?>
+<?endif?>
+
+<Wix xmlns="http://schemas.microsoft.com/wix/2006/wi">
+    <Product Id="35e5e858-9372-4449-bf73-1cd6f7267128" 
+        UpgradeCode="23f90fdd-9328-47ea-ab52-5380855a4b12"
+        Name="cloudflared"
+        Version="$(var.Version)"
+        Manufacturer="cloudflare"
+        Language="1033">
+
+      <Package InstallerVersion="200" Compressed="yes" Comments="Windows Installer Package" InstallScope="perMachine"/>
+
+      <Media Id="1" Cabinet="product.cab" EmbedCab="yes"/>
+
+      <Upgrade Id="23f90fdd-9328-47ea-ab52-5380855a4b12">
+         <UpgradeVersion Minimum="$(var.Version)" OnlyDetect="yes" Property="NEWERVERSIONDETECTED"/>
+         <UpgradeVersion Minimum="2020.8.0" Maximum="$(var.Version)" IncludeMinimum="yes" IncludeMaximum="no"
+                         Property="OLDERVERSIONBEINGUPGRADED"/>
+      </Upgrade>
+      <Condition Message="A newer version of this software is already installed.">NOT NEWERVERSIONDETECTED</Condition>
+
+    <Directory Id="TARGETDIR" Name="SourceDir">
+        <!--This specifies where the cloudflared.exe is moved to in the windows Operation System-->
+        <Directory Id="$(var.Program_Files)">
+            <Directory Id="INSTALLDIR" Name="cloudflared">
+                <Component Id="ApplicationFiles" Guid="35e5e858-9372-4449-bf73-1cd6f7267128">
+                    <File Id="ApplicationFile0" Source="$(var.Path)"/>
+                </Component>
+            </Directory>
+        </Directory>
+        <Component Id="ENVS" Guid="6bb74449-d10d-4f4a-933e-6fc9fa006eae">
+        <!--Set the cloudflared bin location to the Path Environment Variable-->
+         <Environment Id="ENV0"
+           Name="PATH"
+           Value="[INSTALLDIR]."
+           Permanent="no"
+           Part="all"
+           Action="set"
+           System="yes" />
+        </Component>
+    </Directory>
+
+
+    <Feature Id='Complete' Level='1'>
+      <ComponentRef Id="ENVS"/>
+      <ComponentRef Id='ApplicationFiles' />
+    </Feature>
+
+    </Product>
+</Wix>