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Webserver Example
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| # iex (iwr "https://gist.github.com/anonhostpi/1cc0084b959a9ea9e97dca9dce414e1f/raw/webserver.ps1").Content | |
| function Start-Webserver { | |
| param( | |
| [string] $Binding = "http://localhost:8080/", | |
| [string] $BaseDirectory = "$(Get-Location -PSProvider FileSystem)", | |
| [string] $ServerName = "PowerShell Webserver", | |
| [System.Collections.IDictionary] $Routes = @{ | |
| Before = { param( $command, $listener, $context ) return $true } | |
| After = { param( $command, $listener, $context ) return $true } | |
| # "GET /" = { ... } | |
| # "GET /hello" = "./path/to/static/file.html" | |
| Default = { | |
| param( $command, $request, $response ) | |
| $msg = "Hello, World!" | |
| # $response.OutputStream.Write( [System.Text.Encoding]::UTF8.GetBytes($msg), 0, $msg.Length ) | |
| return $msg | |
| } | |
| } | |
| ) | |
| $BaseDirectory = "$(Resolve-Path $BaseDirectory)" | |
| $serve_static = { | |
| param( | |
| [string] $path, | |
| $response | |
| ) | |
| $file = "$BaseDirectory\$($path.TrimStart('/').Replace('/','\'))" | |
| $file = "$(Resolve-Path $file)" | |
| If( Test-Path $file ){ | |
| # Prevent directory traversal attacks | |
| If( -not $file.StartsWith($BaseDirectory) ){ | |
| $response.StatusCode = 403 | |
| return "403 Forbidden" | |
| } | |
| return (Get-Content $file -Raw) | |
| } Else { | |
| $response.StatusCode = 404 | |
| return "404 Not Found" | |
| } | |
| } | |
| If( [string]::IsNullOrWhitespace( $Routes.Default ) ) { | |
| If( [string]::IsNullOrWhitespace( $Routes["GET /"] ) ) { | |
| $Routes["GET /"] = { return "Hello, World!" } | |
| } | |
| # Simple static webfile server | |
| $Routes.Default = { | |
| param( $command, $request, $response ) | |
| & $serve_static $request.Url.AbsolutePath $response | |
| } | |
| } | |
| $listener = New-Object System.Net.HttpListener | |
| $listener.Prefixes.Add($Binding) | |
| $listener.Start() | |
| $Error.Clear() | |
| Try { | |
| While ( $listener.IsListening ) { | |
| $task = $listener.GetContextAsync() | |
| $ready = $task.Wait(100) # 100 ms timeout | |
| if (-not $ready) { continue } | |
| $context = $task.Result | |
| $request = $context.Request | |
| $command = "{0} {1}" -f $request.HttpMethod, $request.Url.AbsolutePath | |
| If( $Routes.Before ) { | |
| $continue = & $Routes.Before $command $listener $context | |
| If( -not $continue ) { | |
| continue | |
| } | |
| } | |
| $response = $context.Response | |
| $response.ContentType = "text/plain; charset=utf-8" | |
| $result = try { | |
| If( $Routes[$command] ) { | |
| If ( $Routes[$command] -is [scriptblock] ) { | |
| & $Routes[$command] $command $request $response | |
| } Else { | |
| & $serve_static $Routes[$command] $response | |
| } | |
| } Else { | |
| If( $Routes.Default -is [scriptblock] ) { | |
| & $Routes.Default $command $request $response | |
| } Else { | |
| & $serve_static $Routes.Default $response | |
| } | |
| } | |
| } catch { | |
| $response.StatusCode = 500 | |
| "500 Internal Server Error`n`n$($_.Exception.Message)" | |
| } | |
| if( -not [string]::IsNullOrWhiteSpace($result) ) { | |
| $buffer = [System.Text.Encoding]::UTF8.GetBytes($result) | |
| $response.ContentLength64 = $buffer.Length | |
| If( [string]::IsNullOrWhiteSpace($response.Headers["Last-Modified"]) ){ | |
| $response.Headers.Add("Last-Modified", (Get-Date).ToString("r")) | |
| } | |
| If( [string]::IsNullOrWhiteSpace($response.Headers["Server"]) ){ | |
| $response.Headers.Add("Server", $ServerName) | |
| } | |
| $response.OutputStream.Write( $buffer, 0, $buffer.Length ) | |
| } | |
| $response.Close() | |
| If( $Routes.After ) { | |
| $null = & $Routes.After $command $listener $context | |
| } | |
| } | |
| } finally { | |
| $listener.Stop() | |
| $listener.Close() | |
| } | |
| } | |
| Start "http://localhost:8080" | |
| Start-WebServer |
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