Lähetä sähköposteja Opterista Microsoft 365:n avulla

Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser

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#Run the following command manually in Windows PowerShell before running the script below: Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser


#Script to create app registration in Azure with Mail.Send rights for e-mail addresses in Mail-Enabled secutity group created.
#Application secret is set to expire after 999 years. This can be changed to the desired value by modifying $AppYears value
#Please note that tenant wide admin consent must be granted manually after this script has been executed.
#For Opter AB, 2025-04-24, David Magnusson Rosén
#
#Change log
#------------------------------------------------------------------------------------------------------------------------------
#202
#
#


#Code to uninstall entire module with sub-modules if needed 
#foreach ($module in (get-module -listavailable ModuleName*).name |get-unique) {write-host "removing module $module" uninstall-module $module }


#Install/import required modules
echo "Installing/importing required modules (can take several minutes)"

echo "Installing prerequisites..."
#PowerShellGet
if (Get-Module -ListAvailable -Name PowerShellGet) 
{
    echo "Updating module PowerShellGet..."
    Update-Module -Name PowerShellGet -Force
} 
else 
{
    echo "Installing module PowerShellGet..."
    Install-Module -Name PowerShellGet -Scope CurrentUser -Force
}

echo "Installing module Az.Accounts..."
Install-Module -Name Az.Accounts -Scope CurrentUser -RequiredVersion 2.12.1 -AllowClobber -Repository PSGallery -Force
echo "Importing relevant functions from module Az.Accounts..."
Import-Module Az.Accounts -RequiredVersion 2.12.1

echo "Installing module Az.Resources..."
Install-Module -Name Az.Resources -Scope CurrentUser -RequiredVersion 6.6.0 -AllowClobber -Repository PSGallery -Force
echo "Importing relevant functions from module Az.Resources..."
Import-Module Az.Resources -RequiredVersion 6.6.0

echo "Installing module AzureAD..."
Install-Module AzureAD
echo "Importing relevant functions from module AzureAD..."
Import-Module AzureAD -Function Connect-AzureAD, Get-AzureADApplication, New-AzureADApplication, New-AzureADServicePrincipal, Add-AzADAppPermission, Get-AzADServicePrincipal, Get-AzADServicePrincipal_List

echo "Installing module Microsoft.Graph.Authentication..."
Install-Module Microsoft.Graph.Authentication -Scope CurrentUser -Repository PSGallery -AllowClobber -Force -requiredversion 1.27
echo "Importing relevant functions from module Microsoft.Graph.Authentication..."
Import-Module Microsoft.Graph.Authentication -Function Connect-MgGraph 
echo ""

echo "Installing module Microsoft.Graph.Applications..."
Install-Module Microsoft.Graph.Applications -Scope CurrentUser -Repository PSGallery -AllowClobber -Force
echo "Importing relevant functions from module Microsoft.Graph.Applications..."
Import-Module Microsoft.Graph.Applications -Function Add-MgApplicationPassword
echo ""

echo "Installing module ExchangeOnlineManagement..."
Install-Module -Name ExchangeOnlineManagement -Scope CurrentUser -RequiredVersion 3.6.0 -Repository PSGallery  -AllowClobber  -Force
echo "Importing module ExchangeOnlineManagement..."
Import-Module ExchangeOnlineManagement -RequiredVersion 3.6.0 -Function Connect-ExchangeOnline, New-DistributionGroup, New-ApplicationAccessPolicy, Add-DistributionGroupMember
echo ""

echo "Necessary modules/functions installed/imported!"
echo ""

#Query for tenant Id
$TenantId = Read-Host "Please provide your Azure Tenant Id"

#Connect to AzureAD 
Connect-AzureAD -TenantId $TenantId
Connect-AzAccount


#Create app registration and service principal
$appName = "OpterMessageProxy"
if(!($myApp = Get-AzureADApplication -Filter "DisplayName eq '$($appName)'"  -ErrorAction SilentlyContinue))
{
    $myApp = New-AzureADApplication -DisplayName $appName    
    $myServicePrincipal = New-AzureADServicePrincipal -AccountEnabled $true -AppId $myApp.AppId -AppRoleAssignmentRequired $true -DisplayName $myApp.DisplayName
    $AppId = $myApp.AppId
}

#Wait for app registration to complete
echo "Wait for app registration to complete..."
Start-Sleep -Seconds 15

#Get service principal for Ms Graph
$graphApiId = '00000003-0000-0000-c000-000000000000'
$mailSendId = 'b633e1c5-b582-4048-a93e-9f11b44c7e96'
$graphSp = Get-AzADServicePrincipal -Filter "appId eq '$graphApiId'"

#Connect to MsGraph
Connect-MgGraph -Scopes "Application.ReadWrite.All", "DelegatedPermissionGrant.ReadWrite.All" 

#Add Mail.Send rights to app registration
Add-AzADAppPermission -ObjectId $myApp.ObjectId -ApiId $graphApiId -PermissionId $mailSendId -Type Role

#Wait for rights assignment to complete
Start-Sleep -Seconds 15

#Create a secret for the app registration
$AppYears = "999"

$PasswordCred = @{ 
    displayName = "Secret_${appName}_unlimited"
    endDateTime = (Get-Date).AddYears($AppYears)
}

# Add App Client Secret - Valid for 999 years
$Secret = Add-MgApplicationPassword -ApplicationId $myApp.ObjectId -PasswordCredential $PasswordCred
$SecretText = $Secret.SecretText 
# Write Client Secret value
echo "Secret: ${SecretText}" 

#For future use
#Grant tenant-wide consent for app registration
# Get-MgServicePrincipal -Filter "displayName eq 'Microsoft Graph'" -Property AppRoles | Select -ExpandProperty appRoles |fl
# $params = @{
  # "PrincipalId" ="aaaaaaaa-bbbb-cccc-1111-222222222222"
  # "ResourceId" = "a0a0a0a0-bbbb-cccc-dddd-e1e1e1e1e1e1"
  # "AppRoleId" = "df021288-bdef-4463-88db-98f22de89214"
# }
# New-MgServicePrincipalAppRoleAssignment -ServicePrincipalId 'aaaaaaaa-bbbb-cccc-1111-222222222222' -BodyParameter $params | 
#  Format-List Id, AppRoleId, CreatedDateTime, PrincipalDisplayName, PrincipalId, PrincipalType, ResourceDisplayName

#Connect to Exchange Online
$UserPrincipleName = Read-Host "Please provide your Microsoft365 admin user (usually yourname@yourdomain.com)"
Connect-ExchangeOnline -UserPrincipalName $UserPrincipleName

#Set up mail sending restrictions
$UserDomain = Read-Host "Please provide your Microsoft365 domain(usually yourdomain.com)"
$SenderAddress = Read-Host "Please provide an existing e-mail address to be used as sender"
$GroupName = "${appName}_group"
$mesGroup = New-DistributionGroup -Name $GroupName -PrimarySmtpAddress "${appName}@${UserDomain}" -Alias $GroupName.ToLower() -Type security 
$accessPolicy = New-ApplicationAccessPolicy -AppId $myApp.AppId -PolicyScopeGroupId "${appName}@${UserDomain}" -AccessRight RestrictAccess -Description "Restrict this app to members of distribution group ${GroupName}."
$dgMember = Add-DistributionGroupMember -Identity $GroupName -Member $SenderAddress -Confirm:$false

#Show settings to use in Opter office settings and copy them to clipboard
#$ButtonType = [System.Windows.Forms.MessageBoxButtons]::OK
$MessageIcon = [System.Windows.Forms.MessageBoxIcon]::Information
$MessageBody =  "Ms Graph Tenant Id:     ${TenantId} `n"
$MessageBody += "Ms Graph Client Id:     ${AppId} `n"
$MessageBody += "Ms Graph Client Secret: ${SecretText} `n"
$MessageInfo = "`n`n"
$MessageInfo += "NB!`nThe client secret disappears when you close this message and cannot be retreived or restored.`n"
$MessageInfo += "If you don't make a note of it, you have to create a new one manually in the Azure portal!`n`n"
$MessageInfo += "The above settings have been copied to the clipboard. Enter them in the office settings in Opter."
$MessageTitle = "Info to be used in Opter office settings"

Set-Clipboard -Value $MessageBody
#[System.Windows.Forms.MessageBox]::Show("${MessageBody} ${MessageInfo}",$MessageTitle,$ButtonType,$MessageIcon)


#Custom result form
$color = [System.Drawing.Color]::White
$form = New-Object System.Windows.Forms.Form
$form.Text = $MessageTitle
$form.BackColor = $color
$form.Width = 800  
$form.Height = 275

$lblTenantId = New-Object System.Windows.Forms.Label
$lblTenantId.Text = "Ms Graph Tenant Id:"
$lblTenantId.AutoSize = $true
$lblTenantId.Font = New-Object System.Drawing.Font("Courier", 10) 
$lblTenantId.Location = New-Object System.Drawing.Point(10,20)

$txtTenantId = New-Object System.Windows.Forms.TextBox
$txtTenantId.Height = 20
$txtTenantId.Width = 375
$txtTenantId.Multiline = $true
$txtTenantId.Text = $TenantId
$txtTenantId.Font = New-Object System.Drawing.Font("Courier New", 10) 
$txtTenantId.Location = New-Object System.Drawing.Point(200,20)

$lblClientId = New-Object System.Windows.Forms.Label
$lblClientId.Text = "Ms Graph Client Id:"
$lblClientId.AutoSize = $true
$lblClientId.Font = New-Object System.Drawing.Font("Courier", 10) 
$lblClientId.Location = New-Object System.Drawing.Point(10,50)

$txtClientId = New-Object System.Windows.Forms.TextBox
$txtClientId.Height = 20
$txtClientId.Width = 375
$txtClientId.Multiline = $true
$txtClientId.Text = $AppId
$txtClientId.Font = New-Object System.Drawing.Font("Courier New", 10) 
$txtClientId.Location = New-Object System.Drawing.Point(200,50)

$lblClientSecret = New-Object System.Windows.Forms.Label
$lblClientSecret.Text = "Ms Graph Client Secret:"
$lblClientSecret.AutoSize = $true
$lblClientSecret.Font = New-Object System.Drawing.Font("Courier", 10) 
$lblClientSecret.Location = New-Object System.Drawing.Point(10,80)

$txtClientSecret = New-Object System.Windows.Forms.TextBox
$txtClientSecret.Height = 20
$txtClientSecret.Width = 375
$txtClientSecret.Multiline = $true
$txtClientSecret.Text = $SecretText
$txtClientSecret.Font = New-Object System.Drawing.Font("Courier New", 10) 
$txtClientSecret.Location = New-Object System.Drawing.Point(200,80)

$lblMessage = New-Object System.Windows.Forms.Label
$lblMessage.Text = $MessageInfo
$lblMessage.AutoSize = $true
$lblMessage.Font = New-Object System.Drawing.Font("Courier", 10) 
$lblMessage.Location = New-Object System.Drawing.Point(10,90)

$form.Controls.Add($lblTenantId)
$form.Controls.Add($txtTenantId)
$form.Controls.Add($lblClientId)
$form.Controls.Add($txtClientId)
$form.Controls.Add($lblClientSecret)
$form.Controls.Add($txtClientSecret)
$form.Controls.Add($lblMessage)

$form.ShowDialog()