public/Set-Config.ps1
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function Set-Config { <# .SYNOPSIS Edit a XML config. .DESCRIPTION This script is used for editing attributes in XML docs. .PARAMETER ConfigFileName XML config file. .PARAMETER XPath Element XPath string, currently supported only in following two forms: Simple e.g. /path/to/element Single key/value query e.g. /path/to/element[@key=value] .PARAMETER Attribute Attribute name .PARAMETER Value Attribute value .PARAMETER InnerText Inner element text .EXAMPLE Set-Config -ConfigFileName web.config -XPath "/configuration/system.serviceModel/behaviors/serviceBehaviors/behavior/serviceCredentials/serviceCertificate" -Attribute "findValue" -Value "E483FA9FFA42F000A366773DD124CE532C31BC68" Changes the serviceCertificate thumbprint .EXAMPLE Set-Config -ConfigFileName "C:\inetpub\WebTest\web.config" -XPath '/configuration/appSettings/add[@key="FederationMetadataLocation"]' -Attribute "value" -Value "https://someserver.com/MetaData" Changes metadata URI to https://someserver.com/MetaData .NOTES Author : Martin Rublik (martin.rublik@bspc.sk) Created : 03/31/2016 Version : 1.0 Changelog: V 1.0 (2016-03-31) - intial version License: The MIT License (MIT) Copyright (c) 2016 Martin Rublik Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. #> [cmdletbinding(ConfirmImpact = 'High', SupportsShouldProcess=$true)] param( [Parameter(Mandatory=$true)] [string]$ConfigFileName, [Parameter(Mandatory=$true)][string]$XPath, [string]$Attribute, [string]$Value, [string]$InnerText ) $config = new-object System.Xml.XmlDocument try { $p = Resolve-Path -LiteralPath $ConfigFileName | select -ExpandProperty Path if ((-not $p)-or($p.Count -gt 1)) { throw "Error identifying config file: $ConfigFileName" } $ConfigFileName=$p Write-Verbose "Loading: $ConfigFileName" $config.Load($ConfigFileName); try { Write-Verbose "Editing: $XPath" $node = $config.SelectSingleNode($XPath); $originalXML = "N/A" if ($node -ne $null) { $originalXML = $node.OuterXML } # Check if node exists if ($node -eq $null) { Write-Warning "Element: $XPath does not exist, creating structure" try { # Create the node path # https://stackoverflow.com/questions/1757065/java-splitting-a-comma-separated-string-but-ignoring-commas-in-quotes $nodes = $XPath -split '/(?=(?:[^\"]*\"[^\"]*\")*[^\"]*$)' | %{ if (-not [string]::IsNullOrEmpty($_.ToString().Trim())){$_}} $path = '/' $nodes | foreach { $nextElement = $_; $nextPath=$path+$nextElement; # // is not valid XPath if ($nextPath.ToString().Equals('//')) { $path=$nextPath; # break; return; } $currNode=$null Write-Verbose "Selecting $nextPath" $currNode=$config.SelectSingleNode($nextPath); if ($currNode -eq $null) { if ($path -ne '/') { $path=$path.TrimEnd('/'); } $currNode = $config.SelectSingleNode($path); # process $nextElement parse [@key=value] $attr=$null $val=$null if ($nextElement.IndexOf('[') -ge 0) { $attrVal=$nextElement.Substring($nextElement.IndexOf('[')); if (!$attrVal.EndsWith(']')) { throw "Incorrect key value $attrVal! Missing ']'"; } # remove [] $attrVal=$attrVal.TrimStart('[').TrimEnd(']'); if (! $attrVal.StartsWith('@')) { throw "Incorrect key value $attrVal! Missing '@'"; } # remove @ $attrVal=$attrVal.Trim('@') # split $attr=$attrVal.Split("=",2)[0]; if ($attrVal.IndexOf('=') -ge 0) { $val=$attrVal.Split("=",2)[1]; # trim ' or " if ($val.StartsWith("'")) { if (!$val.EndsWith("'")) { throw "Incorrect value $attrVal! Missing '"; } $val=$val.Trim("'"); }else { if ($val.StartsWith('"')) { if (!$val.EndsWith('"')) { throw "Incorrect value $attrVal!"; } $val=$val.Trim('"'); }else { throw "Incorrect value $attrVal!" } } } $nextElement=$nextElement.Remove($nextElement.IndexOf('[')); } Write-Verbose "Creating element: $nextElement @ $path"; $childNode = $config.CreateNode("element",$nextElement,""); if ($attr -ne $null) { $xmlAttribute = $config.CreateAttribute($attr); if ($val -ne $null) { $xmlAttribute.Value = $val; } Write-Verbose "Appending attribute $attr with value $val"; $childNode.Attributes.Append($xmlAttribute) | Out-Null } $currNode.AppendChild($childNode) | Out-Null } $path=$nextPath+'/'; } }catch { throw "Error creating $XPath structure. "+$_.Exception.Message } } $node = $config.SelectSingleNode($XPath); # Check if attribute exists if (![string]::IsNullOrEmpty($Attribute)) { if ( $node.$Attribute -eq $null) { Write-Verbose "Creating attribute: $Attribute @ $XPath"; $xmlAttribute = $config.CreateAttribute($Attribute); $node.Attributes.Append($xmlAttribute) | Out-Null } # Set the value Write-Verbose "Setting $Attribute to $Value @ $XPath" $config.SelectSingleNode($XPath).$Attribute=$Value } if (![string]::IsNullOrEmpty($InnerText)) { Write-Verbose "Setting InnerText to $InnerText @ $XPath" $config.SelectSingleNode($XPath).InnerText=$InnerText } try { if ($PSCmdlet.ShouldProcess("$ConfigFileName","Save/Overwrite")) { Write-Verbose "Saving $ConfigFileName" $config.Save($ConfigFileName) }else { Write-Host "What if: --- original value ---" Write-Host "What if: $($originalXML)" Write-Host "What if: --- is about to be changed to ---" Write-Host "What if: $($config.SelectSingleNode($XPath).OuterXML)" Write-Host "What if: ---" Write-Host "What if: Saving $ConfigFileName..." } }catch { throw "Error saving $ConfigFileName" } }catch { throw $_.Exception } }catch { throw $_.Exception } } |