LudovicOmarini · April 25, 2024 12:12
diff --git a/O365_Manage_Calendar_Rights.ps1 b/O365_Manage_Calendar_Rights.ps1
 <#
 .SYNOPSIS
 This script manages Exchange Online calendar permissions for one or more users.

 .DESCRIPTION
 This script first checks if the ExchangeOnlineManagement module is installed and installs it if necessary.
 Then, it connects to Exchange Online and retrieves the current permissions on the specified users' calendars.
 The user can then choose to add, update, or remove permissions on the calendars, specifying the target user and the permissions to grant.
 The changes are then made to the relevant calendars.

 .EXAMPLE
 .\O365_Manage_Calendar_Rights.ps1

 .LINK
 List of values for the -AccessRights parameter for the *-Mailboxfolderpersmission command
 https://learn.microsoft.com/en-us/powershell/module/exchange/add-mailboxfolderpermission?view=exchange-ps#-accessrights
 #>

 # Check if the ExchangeOnlineManagement module is already installed and install it if necessary
 if (-not (Get-Module -Name ExchangeOnlineManagement -ListAvailable)) {
    Install-Module ExchangeOnlineManagement -Force -AllowClobber
 }

 # Connect to Exchange Online
 Connect-ExchangeOnline

 # Ask the user to provide a list of email addresses of calendar owners
 $calendarOwners = (Read-Host "Enter the email address(es) of the calendar owner(s) (separated by commas)") -split ','

 # Display the current permissions on users' calendars
 Write-Host "`nList of permissions on users' calendars`n" -ForegroundColor Yellow

 foreach ($calendarOwner in $calendarOwners) {
    $identity = "$($calendarOwner):\Calendar"

    Write-host "---------------`n$calendarOwner" -ForegroundColor Cyan

    # Display the current permissions on the calendar
    Get-MailboxFolderPermission -Identity $identity | Select-Object User, AccessRights | Format-Table -AutoSize | Out-String | Write-Host
 }

 # Get the user identifier and the action to perform
 $user = Read-Host "Enter the email address or the Full Name of the user to add, modify, or remove"
 $action = Read-Host "Enter the action to perform on the calendar(s): Add, Remove, or Update"

 # Ask for permissions to grant only for Update or Add
 if ($action -eq "Update" -or $action -eq "Add") {
    Write-Host "The list of parameter values is available at the following link: https://learn.microsoft.com/en-us/powershell/module/exchange/add-mailboxfolderpermission?view=exchange-ps#-accessrights`n"
    Write-Host "You can choose multiple roles or permissions by separating them with a comma."
    $permissionLevel = Read-Host "Choose the desired role(s)/permissions (Author, Contributor, Editor, NonEditingAuthor, Owner, PublishingAuthor, PublishingEditor, Reviewer...)"
 }

 # Modify permissions on users' calendars according to the specified action
 foreach ($calendarOwner in $calendarOwners) {
    $identity = "$($calendarOwner):\Calendar"

    Write-host "---------------`n$calendarOwner" -ForegroundColor Cyan

    # Update permissions
    if ($action -eq "Update") {
        Write-Host "Executing Update command..." -ForegroundColor Magenta
        Set-MailboxFolderPermission -Identity $identity -User $user -AccessRights $permissionLevel
    }
    # Add permissions
    elseif ($action -eq "Add") {
        Write-Host "Executing Add command..." -ForegroundColor Magenta
        Add-MailboxFolderPermission -Identity $identity -User $user -AccessRights $permissionLevel
    }
    # Remove permissions
    elseif ($action -eq "Remove") {
        Write-Host "Executing Remove command..." -ForegroundColor Magenta
        Remove-MailboxFolderPermission -Identity $identity -User $user -Confirm:$false
    }

    # Display permissions after modification
    Get-MailboxFolderPermission -Identity $identity | Select-Object User, AccessRights | Format-Table -AutoSize | Out-String | Write-Host
 }
	<#
	.SYNOPSIS
	This script manages Exchange Online calendar permissions for one or more users.

	.DESCRIPTION
	This script first checks if the ExchangeOnlineManagement module is installed and installs it if necessary.
	Then, it connects to Exchange Online and retrieves the current permissions on the specified users' calendars.
	The user can then choose to add, update, or remove permissions on the calendars, specifying the target user and the permissions to grant.
	The changes are then made to the relevant calendars.

	.EXAMPLE
	.\O365_Manage_Calendar_Rights.ps1

	.LINK
	List of values for the -AccessRights parameter for the *-Mailboxfolderpersmission command
	https://learn.microsoft.com/en-us/powershell/module/exchange/add-mailboxfolderpermission?view=exchange-ps#-accessrights
	#>

	# Check if the ExchangeOnlineManagement module is already installed and install it if necessary
	if (-not (Get-Module -Name ExchangeOnlineManagement -ListAvailable)) {
	Install-Module ExchangeOnlineManagement -Force -AllowClobber
	}

	# Connect to Exchange Online
	Connect-ExchangeOnline

	# Ask the user to provide a list of email addresses of calendar owners
	$calendarOwners = (Read-Host "Enter the email address(es) of the calendar owner(s) (separated by commas)") -split ','

	# Display the current permissions on users' calendars
	Write-Host "`nList of permissions on users' calendars`n" -ForegroundColor Yellow

	foreach ($calendarOwner in $calendarOwners) {
	$identity = "$($calendarOwner):\Calendar"

	Write-host "---------------`n$calendarOwner" -ForegroundColor Cyan

	# Display the current permissions on the calendar
	Get-MailboxFolderPermission -Identity $identity \| Select-Object User, AccessRights \| Format-Table -AutoSize \| Out-String \| Write-Host
	}

	# Get the user identifier and the action to perform
	$user = Read-Host "Enter the email address or the Full Name of the user to add, modify, or remove"
	$action = Read-Host "Enter the action to perform on the calendar(s): Add, Remove, or Update"

	# Ask for permissions to grant only for Update or Add
	if ($action -eq "Update" -or $action -eq "Add") {
	Write-Host "The list of parameter values is available at the following link: https://learn.microsoft.com/en-us/powershell/module/exchange/add-mailboxfolderpermission?view=exchange-ps#-accessrights`n"
	Write-Host "You can choose multiple roles or permissions by separating them with a comma."
	$permissionLevel = Read-Host "Choose the desired role(s)/permissions (Author, Contributor, Editor, NonEditingAuthor, Owner, PublishingAuthor, PublishingEditor, Reviewer...)"
	}

	# Modify permissions on users' calendars according to the specified action
	foreach ($calendarOwner in $calendarOwners) {
	$identity = "$($calendarOwner):\Calendar"

	Write-host "---------------`n$calendarOwner" -ForegroundColor Cyan

	# Update permissions
	if ($action -eq "Update") {
	Write-Host "Executing Update command..." -ForegroundColor Magenta
	Set-MailboxFolderPermission -Identity $identity -User $user -AccessRights $permissionLevel
	}
	# Add permissions
	elseif ($action -eq "Add") {
	Write-Host "Executing Add command..." -ForegroundColor Magenta
	Add-MailboxFolderPermission -Identity $identity -User $user -AccessRights $permissionLevel
	}
	# Remove permissions
	elseif ($action -eq "Remove") {
	Write-Host "Executing Remove command..." -ForegroundColor Magenta
	Remove-MailboxFolderPermission -Identity $identity -User $user -Confirm:$false
	}

	# Display permissions after modification
	Get-MailboxFolderPermission -Identity $identity \| Select-Object User, AccessRights \| Format-Table -AutoSize \| Out-String \| Write-Host
	}