InstanceCreationPlugins/symlink-plugin.psm1
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 |
#requires -version 4 function ModuleRoot { $MyInvocation.ScriptName | Split-Path -Parent } $PrivPath = $(Join-Path $(ModuleRoot | Split-Path -Parent) "\Private") <# .SYNOPSIS Plugin for creating symlinks as defined in the ISPSInstance.config .DESCRIPTION This plugin only acts on nodes with the Name attribute of "Symlink". This element is an instruction to create a symlink to either a directory or file. The symlink will be placed in %progdata%\IntelliSearch\<InstanceName>\<LinkName> and targets a location in relation to the root of the package. The LinkName can contain directories, so "\cfg\aSymLink" is valid. If the Force parameter is true, the cmdlet will overwrite the existing file at the path from LinkName. Example from ISPSInstance.config: <Symlink Path="\someFolderInTheComponentPackage" LinkName="\lib" Force="true" /> .EXAMPLE $Splat = @{ Node = @{ LinkName = "Symlink" Path = "\bin\someexecutablefile.exe" Force = $false } InstanceName = "This is ignored" InstanceDirectory = "C:\ProgramData\IntelliSearch\MyInstance\" ComponentDirectory "C:\ProgramFiles\IntelliSearch\IntelliSearch.Server.IndexManager.4.0.2\" } synlink.plugin @Splat .PARAMETER Node The XML node currently being iterated over .PARAMETER InstanceName A string with the name of the instance. This plugin ignores this parameter. .PARAMETER InstanceDirectory The root directory of the new instance .PARAMETER ComponentDirectory The root directory of the installed component .INPUTS System.String .OUTPUTS System.File.SymbolicLink #> function symlink-plugin { param ( # XML node from ISPSInstance.config [Parameter( Mandatory = $true, Position = 0, ValueFromPipelineByPropertyName = $true, HelpMessage = "XML node from ISPSInstance.config")] $Node, # The name representing the new instance [Parameter( Mandatory = $true, Position = 1, ValueFromPipelineByPropertyName = $true, HelpMessage = "Instance name")] [ValidateNotNullOrEmpty()] [string] $InstanceName, # Path to the directory of the new instance [Parameter( Mandatory = $true, Position = 2, ValueFromPipelineByPropertyName = $true, HelpMessage = "Path to the directory of the new instance")] [ValidateNotNullOrEmpty()] [ValidateScript( {Test-Path -Path $_ -PathType Container})] [string] $InstanceDirectory, # Path to the component nuget package directory [Parameter( Mandatory = $true, Position = 3, ValueFromPipelineByPropertyName = $true, HelpMessage = "Path to the component nuget package directory")] [ValidateNotNullOrEmpty()] [ValidateScript( {Test-Path -Path $_ -PathType Container})] [string] $ComponentDirectory ) if ($Node.Name -ne "Symlink") { return } Write-Verbose "Creating new symlink" $Path = (Join-Path $ComponentDirectory $Node.Path) $SymName = (Join-Path $InstanceDirectory $Node.LinkName) if (-not (Test-Path $Path -IsValid)) { Throw "The symlink path is not valid. Got $Path" } if (-not (Test-Path $Path)) { Throw "The symlink path does not exist. Got $Path" } if (-not (Test-Path $SymName -IsValid)) { Throw "The symlink name is not valid. Got $SymName" } if ([System.Convert]::ToBoolean($Node.Force) -and (Test-Path $SymName) ) { Write-Verbose "Symlink path already exists. Overwriting." Remove-Item -Path $SymName -Force } elseif (([System.Convert]::ToBoolean($Node.Force) -eq $false) -and (Test-Path $SymName)) { Throw "File already exists and overwrite is not specified." } # Check if the target is a directory or a file [int]$TargetType = Get-Item $Path | Select-Object -ExpandProperty PSIsContainer $TargetTypeString = if($TargetType) {"directory"} else {"file"} Write-Verbose ("Symlink target type is {0}." -f $TargetTypeString) Try { $return = [mklink.symlink]::CreateSymbolicLinkFix($SymName, $Path, $TargetType) If (-not $return) { $object = New-Object PSObject -Property @{ SymLink = $SymName Target = $Path Type = $TargetTypeString } $object.pstypenames.insert(0, 'System.File.SymbolicLink') $object } elseif ($return -eq 1314) { Throw "Unable to create symbolic link! Plugin is not running as administrator." } Else { Throw "Unable to create symbolic link! Return code: $Return" } } Catch { Write-warning ("{0}: {1}" -f $path, $_.Exception.Message) } } #region Load dll for CreateSymbolicLink method Try { $null = [mklink.symlink] } Catch { Add-Type @" using System; using System.Runtime.InteropServices; namespace mklink { public enum SYMBOLIC_LINK_FLAG { File = 0, Directory = 1 } public class symlink { [DllImport("kernel32.dll", EntryPoint = "CreateSymbolicLinkW", CharSet = CharSet.Unicode, SetLastError = true)] static extern int CreateSymbolicLink(string lpSymlinkFileName, string lpTargetFileName, SYMBOLIC_LINK_FLAG dwFlags); public static int CreateSymbolicLinkFix(string lpSymlinkFileName, string lpTargetFileName, SYMBOLIC_LINK_FLAG dwFlags) { var result = CreateSymbolicLink(lpSymlinkFileName, lpTargetFileName, dwFlags); if (result == 1) return 0; // Success return Marshal.GetLastWin32Error(); } } } "@ } #endregion Load dll for CreateSymbolicLink method |