Private/Connect/Connect-PoshGraphRefresh.ps1
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function Connect-PoshGraphRefresh { [CmdletBinding()] param ( ) $TenantPath = Join-Path -Path $Env:USERPROFILE -ChildPath ('.Posh365/Credentials/Graph/{0}' -f $Tenant) $TenantCred = Join-Path -Path $TenantPath -ChildPath ('{0}Cred.xml' -f $Tenant) $TenantConfig = Join-Path -Path $TenantPath -ChildPath ('{0}Config.xml' -f $Tenant) $TImport = Import-Clixml $TenantConfig [System.Management.Automation.PSCredential]$TConfig = $TImport.Cred $TS = [System.Runtime.InteropServices.Marshal]::SecureStringToBSTR($TConfig.Password) $TenantSecret = [System.Runtime.InteropServices.Marshal]::PtrToStringAuto($TS) [System.Management.Automation.PSCredential]$TCred = Import-Clixml -Path $TenantCred $TP = [System.Runtime.InteropServices.Marshal]::SecureStringToBSTR($TCred.Password) $TPass = [System.Runtime.InteropServices.Marshal]::PtrToStringAuto($TP) $Request = @{ Method = 'POST' Body = @{ Grant_Type = 'refresh_token' Client_Id = $TImport.ClientId Client_Secret = $TenantSecret Username = $TCred.UserName Password = $TPass refresh_token = $RefreshToken Scope = "offline_access https://graph.microsoft.com/.default" } Uri = 'https://login.microsoftonline.com/{0}/oauth2/v2.0/token' -f $TConfig.Username } $TenantResponse = Invoke-RestMethod @Request $Script:TimeToRefresh = ([datetime]::UtcNow).AddSeconds($TenantResponse.expires_in - 10) $Script:Token = $TenantResponse.access_token } |