Public/Headers.ps1
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<#
.SYNOPSIS Appends a header against the Response. .DESCRIPTION Appends a header against the Response. If the current context is serverless, then this function acts like Set-PodeHeader. .PARAMETER Name The name of the header. .PARAMETER Value The value to set against the header. .PARAMETER Secret If supplied, the secret with which to sign the header's value. .EXAMPLE Add-PodeHeader -Name 'X-AuthToken' -Value 'AA-BB-CC-33' #> function Add-PodeHeader { [CmdletBinding()] param ( [Parameter(Mandatory=$true)] [string] $Name, [Parameter(Mandatory=$true)] [string] $Value, [Parameter()] [string] $Secret ) # sign the value if we have a secret if (![string]::IsNullOrWhiteSpace($Secret)) { $Value = (Invoke-PodeValueSign -Value $Value -Secret $Secret) } # add the header to the response if ($PodeContext.Server.IsServerless) { $WebEvent.Response.Headers[$Name] = $Value } else { $WebEvent.Response.Headers.Add($Name, $Value) } } <# .SYNOPSIS Tests if a header is present on the Request. .DESCRIPTION Tests if a header is present on the Request. .PARAMETER Name The name of the header to test. .EXAMPLE Test-PodeHeader -Name 'X-AuthToken' #> function Test-PodeHeader { [CmdletBinding()] [OutputType([bool])] param ( [Parameter(Mandatory=$true)] [string] $Name ) $header = (Get-PodeHeader -Name $Name) return (![string]::IsNullOrWhiteSpace($header)) } <# .SYNOPSIS Retrieves the value of a header from the Request. .DESCRIPTION Retrieves the value of a header from the Request. .PARAMETER Name The name of the header to retrieve. .PARAMETER Secret The secret used to unsign the header's value. .EXAMPLE Get-PodeHeader -Name 'X-AuthToken' #> function Get-PodeHeader { [CmdletBinding()] [OutputType([string])] param ( [Parameter(Mandatory=$true)] [string] $Name, [Parameter()] [string] $Secret ) # get the value for the header from the request $header = $WebEvent.Request.Headers.$Name # if a secret was supplied, attempt to unsign the header's value if (![string]::IsNullOrWhiteSpace($Secret)) { $header = (Invoke-PodeValueUnsign -Value $header -Secret $Secret) } return $header } <# .SYNOPSIS Sets a header on the Response, clearing all current values for the header. .DESCRIPTION Sets a header on the Response, clearing all current values for the header. .PARAMETER Name The name of the header. .PARAMETER Value The value to set against the header. .PARAMETER Secret If supplied, the secret with which to sign the header's value. .EXAMPLE Set-PodeHeader -Name 'X-AuthToken' -Value 'AA-BB-CC-33' #> function Set-PodeHeader { [CmdletBinding()] param ( [Parameter(Mandatory=$true)] [string] $Name, [Parameter(Mandatory=$true)] [string] $Value, [Parameter()] [string] $Secret ) # sign the value if we have a secret if (![string]::IsNullOrWhiteSpace($Secret)) { $Value = (Invoke-PodeValueSign -Value $Value -Secret $Secret) } # set the header on the response if ($PodeContext.Server.IsServerless) { $WebEvent.Response.Headers[$Name] = $Value } else { $WebEvent.Response.Headers.Set($Name, $Value) } } <# .SYNOPSIS Tests if a header on the Request is validly signed. .DESCRIPTION Tests if a header on the Request is validly signed, by attempting to unsign it using some secret. .PARAMETER Name The name of the header to test. .PARAMETER Secret A secret to use for attempting to unsign the header's value. .EXAMPLE Test-PodeHeaderSigned -Name 'X-Header-Name' -Secret 'hunter2' #> function Test-PodeHeaderSigned { [CmdletBinding()] [OutputType([bool])] param ( [Parameter(Mandatory=$true)] [string] $Name, [Parameter()] [string] $Secret ) $header = Get-PodeHeader -Name $Name if ([string]::IsNullOrWhiteSpace($header)) { return $false } $value = (Invoke-PodeValueUnsign -Value $header -Secret $Secret) return (![string]::IsNullOrWhiteSpace($value)) } |