Thursday, 14 September 2017

Find SharePoint List items with unique permissions using powershell

We can easily find and retrieve SharePoint list items which has unique permissions using CSOM in Powershell. In this script, we are going to use GitHub open source library Load-CSOMProperties.ps1 to fetch extra properties (ex: HasUniqueRoleAssignments) in SharePoint CSOM API. You can refer this post : How to load additional CSOM properties in PowerShell for more details.

The following Powershell script get all files (or list items) which has unique (or explicit) permission entries from a given SharePoint Online document library. To use CSOM in Powershell, we need to load the required Microsoft SharePoint Online SDK assembly files.
#Add required references to SharePoint client assembly to use CSOM
[System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SharePoint.Client")
[System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SharePoint.Client.Runtime")

C:\Scripts\Load-CSOMProperties.ps1
  
$siteUrl="https://spotenant.sharepoint.com/sites/mysite1"
$UserName = "admin@spotenant.onmicrosoft.com"
$SecPwd = $(ConvertTo-SecureString 'myAdminPwd' -asplaintext -force) 
$ctx = New-Object Microsoft.SharePoint.Client.ClientContext($siteUrl) 
$credentials = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($UserName,$SecPwd) 
$ctx.credentials = $credentials
$ctx.Load($ctx.Web)
$ctx.ExecuteQuery()
$list=$ctx.Web.Lists.GetByTitle("Documents")
$ctx.Load($list)
$ctx.ExecuteQuery()
$camlQuery = New-Object Microsoft.SharePoint.Client.CamlQuery
$camlQuery.ViewXml ="<View Scope='RecursiveAll' />";
$allItems=$list.GetItems($camlQuery)
$ctx.Load($allItems)
$ctx.ExecuteQuery()
 
foreach($item in $allItems)
{
Load-CSOMProperties -object $item -propertyNames @("HasUniqueRoleAssignments");
$ctx.ExecuteQuery();
if($item.HasUniqueRoleAssignments -eq $true)
{
Write-Host $item["FileRef"]
Write-Host "##############"
}
}

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