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+@echo off
+::
+:: This script will:
+::
+:: 1. install the windows OpenSSH server (either via dsim or download it)
+:: 2. activate the windows OpenSSH service
+:: 3. open OpenSSH TCP port at windows firewall
+:: 4. create a small batch file to start an MSYS session
+:: 5. Set the default OpenSSH startup script to start the MSYS session
+::
+:: Problems:
+:: On older windows versions, terminal emulation is broken.
+:: So, on windows 10 or windows server before 2019, the ssh session
+:: will not have proper terminal emulation and will be not be able to
+:: be used for editing files.
+:: For more info check:
+:: https://github.com/PowerShell/Win32-OpenSSH/issues/1260
+::
+
+:: Check if OpenSSH Server is already installed
+sc query sshd >nul 2>&1
+if %errorlevel% neq 0 (
+ echo "OpenSSH Server not found. Attempting to install via dism..."
+ goto :install_openssh_dism
+) else (
+ echo "OpenSSH Server is already installed."
+ goto :configure_openssh
+)
+
+:: Install OpenSSH using dism
+:install_openssh_dism
+dism /online /Enable-Feature /FeatureName:OpenSSH-Client /All >nul 2>&1
+dism /online /Enable-Feature /FeatureName:OpenSSH-Server /All >nul 2>&1
+
+:: Check if dism succeeded in installing OpenSSH
+sc query sshd >nul 2>&1
+if %errorlevel% neq 0 (
+ echo "OpenSSH installation via dism failed or is unavailable."
+ goto :install_openssh_manual
+) else (
+ echo "OpenSSH installed successfully using dism."
+ goto :configure_openssh
+)
+
+:: Function to Install OpenSSH manually if dism fails
+:install_openssh_manual
+echo "Installing OpenSSH manually..."
+
+:: Download the latest OpenSSH release
+set DOWNLOAD_URL=https://github.com/PowerShell/Win32-OpenSSH/releases/download/v9.5.0.0p1-Beta/OpenSSH-Win64.zip
+set DOWNLOAD_FILE=%temp%\OpenSSH-Win64.zip
+set INSTALL_DIR=C:\Program Files\OpenSSH-Win64
+
+:: Create the installation directory if it doesn't exist
+if not exist "%INSTALL_DIR%" mkdir "%INSTALL_DIR%"
+
+:: Attempt to download OpenSSH using Invoke-WebRequest and TLS configuration
+powershell -Command "[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; try { Invoke-WebRequest -Uri '%DOWNLOAD_URL%' -OutFile '%DOWNLOAD_FILE%' -UseBasicParsing; exit 0 } catch { exit 1 }"
+if %errorlevel% neq 0 (
+ echo "Invoke-WebRequest download failed. Attempting to download using curl..."
+ curl -L -o "%DOWNLOAD_FILE%" "%DOWNLOAD_URL%"
+ if %errorlevel% neq 0 (
+ echo "Failed to download OpenSSH using curl. Exiting..."
+ exit /b 1
+ )
+)
+
+:: Unzip directly to INSTALL_DIR (flatten the folder structure)
+powershell -Command "Expand-Archive -Path '%DOWNLOAD_FILE%' -DestinationPath '%INSTALL_DIR%' -Force"
+if %errorlevel% neq 0 (
+ echo "Failed to unzip OpenSSH package."
+ exit /b 1
+)
+
+:: Move inner contents to INSTALL_DIR if nested OpenSSH-Win64 folder exists
+if exist "%INSTALL_DIR%\OpenSSH-Win64" (
+ xcopy "%INSTALL_DIR%\OpenSSH-Win64\*" "%INSTALL_DIR%\" /s /e /y
+ rmdir "%INSTALL_DIR%\OpenSSH-Win64" /s /q
+)
+
+:: Add the OpenSSH binaries to the system PATH
+setx /M PATH "%INSTALL_DIR%;%PATH%"
+
+:: Register OpenSSH utilities as services using PowerShell
+powershell -ExecutionPolicy Bypass -Command "& '%INSTALL_DIR%\install-sshd.ps1'"
+
+:: Verify if manual installation succeeded
+sc query sshd >nul 2>&1
+if %errorlevel% neq 0 (
+ echo "Manual OpenSSH installation failed. Exiting..."
+ exit /b 1
+) else (
+ echo "OpenSSH installed successfully manually."
+ goto :configure_openssh
+)
+
+:configure_openssh
+:: Ensure OpenSSH Server service is set to start automatically and start the service
+sc config sshd start= auto
+net start sshd
+
+:: Create msys2.bat file with specific content
+set MSYS2_PATH=C:\msys64
+if not exist "%MSYS2_PATH%" (
+ echo "Error: %MSYS2_PATH% does not exist."
+ exit /b 1
+)
+
+echo @%MSYS2_PATH%\msys2_shell.cmd -defterm -here -no-start -msys > %MSYS2_PATH%\msys2.bat
+
+:: Run PowerShell command to set default shell
+powershell -Command "New-ItemProperty -Path 'HKLM:\SOFTWARE\OpenSSH' -Name 'DefaultShell' -Value '%MSYS2_PATH%\msys2.bat' -PropertyType String -Force"
+
+:: Open the Windows Firewall for sshd (using PowerShell)
+powershell -Command "New-NetFirewallRule -Name 'OpenSSH-Server-In-TCP' -DisplayName 'OpenSSH Server (sshd) Incoming' -Description 'Allow incoming SSH traffic via OpenSSH server' -Enabled True -Direction Inbound -Protocol TCP -LocalPort 22 -Action Allow"
+
+echo "OpenSSH has been successfully configured with MSYS2 as the default shell, and the firewall has been opened for sshd."
+pause