From 2b339b6842e09a3f8c2d915714392e0d48391c5c Mon Sep 17 00:00:00 2001
From: "Alexey.Golubev" <alexey.golubev@onlyoffice.com>
Date: Wed, 6 Dec 2017 18:21:58 +0300
Subject: [PATCH] Cherrypick from develop

---
 Common/3dParty/cef/download.ps1 | 62 +++++++++++++++++++++++++++++++++
 Common/3dParty/cef/fetch.bat    |  6 +---
 2 files changed, 63 insertions(+), 5 deletions(-)
 create mode 100644 Common/3dParty/cef/download.ps1

diff --git a/Common/3dParty/cef/download.ps1 b/Common/3dParty/cef/download.ps1
new file mode 100644
index 0000000000..0bbcfd69ef
--- /dev/null
+++ b/Common/3dParty/cef/download.ps1
@@ -0,0 +1,62 @@
+Add-Type -AssemblyName System.IO.Compression.FileSystem
+
+# ----------------------------------------------------------------------------------------------
+# download a file
+# ----------------------------------------------------------------------------------------------
+function Download-File
+{
+	param ([string]$url,[string]$file)
+	
+	$downloadRequired = $true
+	if (Test-Path $file)
+	{
+		$localModified = (Get-Item $file).LastWriteTime
+		$webRequest = [System.Net.HttpWebRequest]::Create($url)
+		$webRequest.Method = "HEAD"
+		$webResponse = $webRequest.GetResponse()
+		$remoteLastModified = ($webResponse.LastModified) -as [DateTime] 
+		$webResponse.Close()
+
+		if ($remoteLastModified -gt $localModified)
+		{
+			Write-Host "$file is out of date"
+		}
+		else
+		{
+			$downloadRequired = $false
+		}
+	}
+
+	if ($downloadRequired)
+	{
+		$clnt = new-object System.Net.WebClient
+		Write-Host "Downloading from $url to $file"
+		$clnt.DownloadFile($url, $file)
+	}
+	else
+	{
+		Write-Host "$file is up to date."
+	}
+	
+	return $downloadRequired
+}
+
+# ----------------------------------------------------------------------------------------------
+# unzip a file
+# ----------------------------------------------------------------------------------------------
+function RemoveCef
+{
+	param([string]$outpath)
+
+	if (Test-Path $outpath)
+	{
+		Write-Host "Remove folder $outpath"
+    Remove-Item $outpath -Force -Recurse
+	}
+}
+
+$output = Download-File -url $args[0] -file $args[1]
+if ($output)
+ {
+	 RemoveCef -outpath $args[2]
+ }
\ No newline at end of file
diff --git a/Common/3dParty/cef/fetch.bat b/Common/3dParty/cef/fetch.bat
index 3ef6598f02..3e49b8cbf6 100644
--- a/Common/3dParty/cef/fetch.bat
+++ b/Common/3dParty/cef/fetch.bat
@@ -12,11 +12,7 @@ if defined TARGET (
 mkdir "%SCRIPTPATH%%PLATFORM%"
 cd "%SCRIPTPATH%%PLATFORM%"
 
-if exist "cef_binary.7z" (
-    echo "cef_binary.7z already downloaded"
-) else (
-    Powershell.exe Invoke-WebRequest -OutFile cef_binary.7z http://d2ettrnqo7v976.cloudfront.net/cef/2454/%PLATFORM%/cef_binary.7z
-)
+Powershell.exe -executionpolicy remotesigned -file %SCRIPTPATH%download.ps1 http://d2ettrnqo7v976.cloudfront.net/cef/3163/%PLATFORM%/cef_binary.7z cef_binary.7z cef_binary
 
 SET UNSIP_PROGRAMM="%ProgramFiles%\7-Zip\7z.exe"
 SET UNSIP_PROGRAMM2="%ProgramFiles(x86)%\7-Zip\7z.exe"