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SharePoint Online: Permission Report for Specific User in a Site Collection using PowerShell

Requirement:  Generate a permission report to audit a specific user's permissions in given SharePoint Online site collection, sub-sites, all its lists, libraries and list items.

SharePoint Online PowerShell permissions report
This PowerShell script checks user permissions and exports the findings into a CSV file. How to run this script? Just change the Parameters from Line#6 to Line#8 according to your environment and hit run.
sharepoint online powershell check user permissions

SharePoint Online: PowerShell to get user permissions on a given site collection 
Here is how to check user permissions using PowerShell in SharePoint Online. Please note, there is a limitation in the script: This PowerShell script doesn't scan Active Directory security groups!
#Load SharePoint CSOM Assemblies
Add-Type -Path "C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\16\ISAPI\Microsoft.SharePoint.Client.dll"
Add-Type -Path "C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\16\ISAPI\Microsoft.SharePoint.Client.Runtime.dll"
 
#Set parameter values
$SiteURL="https://crescent.sharepoint.com/sites/Ops"
$UserAccount="i:0#.f|membership|Salaudeen@Crescent.com"
$ReportFile="C:\Temp\PermissionRpt.csv"

#To call a non-generic method Load
Function Invoke-LoadMethod() {
    param(
            [Microsoft.SharePoint.Client.ClientObject]$Object = $(throw "Please provide a Client Object"),
            [string]$PropertyName
        ) 
   $ctx = $Object.Context
   $load = [Microsoft.SharePoint.Client.ClientContext].GetMethod("Load") 
   $type = $Object.GetType()
   $clientLoad = $load.MakeGenericMethod($type)
 
   $Parameter = [System.Linq.Expressions.Expression]::Parameter(($type), $type.Name)
   $Expression = [System.Linq.Expressions.Expression]::Lambda([System.Linq.Expressions.Expression]::Convert([System.Linq.Expressions.Expression]::PropertyOrField($Parameter,$PropertyName),[System.Object] ), $($Parameter))
   $ExpressionArray = [System.Array]::CreateInstance($Expression.GetType(), 1)
   $ExpressionArray.SetValue($Expression, 0)
   $clientLoad.Invoke($ctx,@($Object,$ExpressionArray))
}

#Get Permissions Applied on a particular Object, such as: Web, List, Folder or Item
Function Get-Permissions([Microsoft.SharePoint.Client.SecurableObject]$Object)
{
    #Determine the type of the object
    Switch($Object.TypedObject.ToString())
    {
        "Microsoft.SharePoint.Client.Web"  { $ObjectType = "Site" ; $ObjectURL = $Object.URL }
        "Microsoft.SharePoint.Client.ListItem"
        { 
            $ObjectType = "List Item/Folder"

            #Get the URL of the List Item
            Invoke-LoadMethod -Object $Object.ParentList -PropertyName "DefaultDisplayFormUrl"
            $Ctx.ExecuteQuery()
            $DefaultDisplayFormUrl = $Object.ParentList.DefaultDisplayFormUrl
            $ObjectURL = $("{0}{1}?ID={2}" -f $Ctx.Web.Url.Replace($Ctx.Web.ServerRelativeUrl,''), $DefaultDisplayFormUrl,$Object.ID)
        }
        Default 
        { 
            $ObjectType = "List/Library"
            #Get the URL of the List or Library
            $Ctx.Load($Object.RootFolder)
            $Ctx.ExecuteQuery()            
            $ObjectURL = $("{0}{1}" -f $Ctx.Web.Url.Replace($Ctx.Web.ServerRelativeUrl,''), $Object.RootFolder.ServerRelativeUrl)
        }
    }

    #Get permissions assigned to the object
    $Ctx.Load($Object.RoleAssignments)
    $Ctx.ExecuteQuery()

    Foreach($RoleAssignment in $Object.RoleAssignments)
    { 
                $Ctx.Load($RoleAssignment.Member)
                $Ctx.executeQuery()

                #Check direct permissions
                if($RoleAssignment.Member.PrincipalType -eq "User")
                {
                    #Is the current user is the user we search for?
                    if($RoleAssignment.Member.LoginName -eq $SearchUser.LoginName)
                    {
                        Write-Host  -f Cyan "Found the User under direct permissions of the $($ObjectType) at $($ObjectURL)"
                        
                        #Get the Permissions assigned to user
                        $UserPermissions=@()
                        $Ctx.Load($RoleAssignment.RoleDefinitionBindings)
                        $Ctx.ExecuteQuery()
                        foreach ($RoleDefinition in $RoleAssignment.RoleDefinitionBindings)
                        {
                            $UserPermissions += $RoleDefinition.Name +";"
                        }
                        #Send the Data to Report file
                        "$($ObjectURL) `t $($ObjectType) `t $($Object.Title)`t Direct Permission `t $($UserPermissions)" | Out-File $ReportFile -Append
                    }
                }
                
                Elseif($RoleAssignment.Member.PrincipalType -eq "SharePointGroup")
                {
                        #Search inside SharePoint Groups and check if the user is member of that group
                        $Group= $Web.SiteGroups.GetByName($RoleAssignment.Member.LoginName)
                        $GroupUsers=$Group.Users
                        $Ctx.Load($GroupUsers)
                        $Ctx.ExecuteQuery()

                        #Check if user is member of the group
                        Foreach($User in $GroupUsers)
                        {
                            #Check if the search users is member of the group
                            if($user.LoginName -eq $SearchUser.LoginName)
                            {
                                Write-Host -f Cyan "Found the User under Member of the Group '"$RoleAssignment.Member.LoginName"' on $($ObjectType) at $($ObjectURL)"

                                #Get the Group's Permissions on site
                                $GroupPermissions=@()
                                $Ctx.Load($RoleAssignment.RoleDefinitionBindings)
                                $Ctx.ExecuteQuery()
                                Foreach ($RoleDefinition  in $RoleAssignment.RoleDefinitionBindings)
                                {
                                    $GroupPermissions += $RoleDefinition.Name +";"
                                }          
                                #Send the Data to Report file
                                "$($ObjectURL) `t $($ObjectType) `t $($Object.Title)`t Member of '$($RoleAssignment.Member.LoginName)' Group `t $($GroupPermissions)" | Out-File $ReportFile -Append
                            }
                        }
                }
            }
}

Try {
        #Get Credentials to connect
        $Cred= Get-Credential
        $Credentials = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($Cred.Username, $Cred.Password)
 
        #Setup the context
        $Ctx = New-Object Microsoft.SharePoint.Client.ClientContext($SiteURL)
        $Ctx.Credentials = $Credentials

        #Get the Web
        $Web = $Ctx.Web
        $Ctx.Load($Web)
        $Ctx.ExecuteQuery()

        #Get the User object
        $SearchUser = $Web.EnsureUser($UserAccount)
        $Ctx.Load($SearchUser)
        $Ctx.ExecuteQuery()

        #Write CSV- TAB Separated File) Header
        "URL `t Object `t Title `t PermissionType `t Permissions" | out-file $ReportFile

        Write-host -f Yellow "Searching in the Site Collection Administrators Group..."
        #Check if Site Collection Admin
        If($SearchUser.IsSiteAdmin -eq $True)
        {
            Write-host -f Cyan "Found the User under Site Collection Administrators Group!"
            #Send the Data to report file
           "$($Web.URL) `t Site Collection `t $($Web.Title)`t Site Collection Administrator `t Site Collection Administrator" | Out-File $ReportFile -Append
        }


        #Function to Check Permissions of All List Items of a given List
        Function Check-SPOListItemsPermission([Microsoft.SharePoint.Client.List]$List)
        {
            Write-host -f Yellow "Searching in List Items of the List'"$List.Title"'..."

            #Batch process list items - to mitigate list threashold issue on larger lists
            Do {  
                #Get all items from the list
                $Query = New-Object Microsoft.SharePoint.Client.CamlQuery
                $Query.ViewXml = "<View Scope='RecursiveAll'><RowLimit>500</RowLimit></View>"
                $ListItems = $List.GetItems($Query)
                $Ctx.Load($ListItems)
                $Ctx.ExecuteQuery()
         
                $Query.ListItemCollectionPosition = $ListItems.ListItemCollectionPosition

                #Loop through each List item
                ForEach($ListItem in $ListItems)
                {
                    Invoke-LoadMethod -Object $ListItem -PropertyName "HasUniqueRoleAssignments"
                    $Ctx.ExecuteQuery()
                    if ($ListItem.HasUniqueRoleAssignments -eq $true)
                    {
                        #Call the function to generate Permission report
                        Get-Permissions -Object $ListItem
                    }
                }
            } While ($Query.ListItemCollectionPosition -ne $null)
        }

        #Function to Check Permissions of all lists from the web
        Function Check-SPOListPermission([Microsoft.SharePoint.Client.Web]$Web)
        {
            #Get All Lists from the web
            $Lists = $Web.Lists
            $Ctx.Load($Lists)
            $Ctx.ExecuteQuery()

            #Get all lists from the web   
            ForEach($List in $Lists)
            {
                #Exclude System Lists
                If($List.Hidden -eq $False)
                {
                    #Get List Items Permissions
                    Check-SPOListItemsPermission $List

                    #Get the Lists with Unique permission
                    Invoke-LoadMethod -Object $List -PropertyName "HasUniqueRoleAssignments"
                    $Ctx.ExecuteQuery()

                    If( $List.HasUniqueRoleAssignments -eq $True)
                    {
                        #Call the function to check permissions
                        Get-Permissions -Object $List
                    }
                }
            }
        }

        #Function to Check Webs's Permissions from given URL
        Function Check-SPOWebPermission([Microsoft.SharePoint.Client.Web]$Web) 
        {
            #Get all immediate subsites of the site
            $Ctx.Load($web.Webs)  
            $Ctx.executeQuery()
 
            #Call the function to Get Lists of the web
            Write-host -f Yellow "Searching in the Web "$Web.URL"..."

            #Check if the Web has unique permissions
            Invoke-LoadMethod -Object $Web -PropertyName "HasUniqueRoleAssignments"
            $Ctx.ExecuteQuery()

            #Get the Web's Permissions
            If($web.HasUniqueRoleAssignments -eq $true) 
            { 
                Get-Permissions -Object $Web
            }

            #Scan Lists with Unique Permissions
            Write-host -f Yellow "Searching in the Lists and Libraries of "$Web.URL"..."
            Check-SPOListPermission($Web)
 
            #Iterate through each subsite in the current web
            Foreach ($Subweb in $web.Webs)
            {
                    #Call the function recursively                            
                    Check-SPOWebPermission($SubWeb)
            }
        }

        #Call the function with RootWeb to get site collection permissions
        Check-SPOWebPermission $Web

        Write-host -f Green "User Permission Report Generated Successfully!"
     }
    Catch {
        write-host -f Red "Error Generating User Permission Report!" $_.Exception.Message
   }
and the result of SharePoint Online user permissions report using PowerShell: Script generates a CSV file in below format.
sharepoint online powershell get user permissions
If you are looking for permission report on all users of the site collection, use my another script: SharePoint Online: PowerShell Permissions Report
SharePoint Online: Permission Report for Specific User in a Site Collection using PowerShell SharePoint Online: Permission Report for Specific User in a Site Collection using PowerShell Reviewed by Salaudeen Rajack on September 04, 2018 Rating: 5

7 comments:

  1. awesome script !!! thank you.

    ReplyDelete
  2. wonderfull.. you saved my day..

    Adding one more If condition to full Security groups is working absolutely fine.
    $RoleAssignment.Member.PrincipalType -eq "SecurityGroup"

    ReplyDelete
  3. Hi Salaudeen,

    Thanks for your script.

    As the result, it only shows the site permission information not including library and folder. Is it possible you can help to list the library permission with users and groups?

    Appreciate it if you can help.

    ReplyDelete
  4. Script working for small lists. Having problems with large lists. I am new to PowerShell. Can you please update the script to use linq to resolve performance issues?

    ReplyDelete
  5. Absolutamente bueno. Solo tengo un problema y es la conexion con el office 365

    ReplyDelete
    Replies
    1. Reducing the Row Limit from 2000 to 500 resolves the problem: Exception calling "ExecuteQuery" with "0" argument(s): "The underlying connection was closed: An unexpected error occurred on a receive."

      Delete
  6. Hi..

    $RoleAssignment.Member.Users is available???. Seems to be not working..

    ReplyDelete

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