BcSaaS/New-BcAuthContext.ps1
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.Synopsis Function for creating a new Business Central Authorization Context .Description Function for creating a new Business Central Authorization Context The Authorization Context can be used to authenticate to a Business Central online tenant/environment in various function from ContainerHelper. The Authorization Context contains an AccessToken and you can renew the accesstoken (if necessary) by calling Renew-BcAuthContext Order of priority of OAuth2 flows: client_credentials, password, refresh_token, devicecode .Parameter clientID ClientID of AAD app to use for authentication. Default is a well known PowerShell AAD App ID (1950a258-227b-4e31-a9cf-717495945fc2) .Parameter Resource Resource used for OAuth2 flow. Default is https://api.businesscentral.dynamics.com/ .Parameter tenantID TenantID to use for OAuth2 flow. Default is Common .Parameter authority Authority to use for OAuth2 login. Default is https://login.microsoftonline.com/$TenantID .Parameter scopes Scopes to use for OAuth2 flow. Default is https://api.businesscentral.dynamics.com/.default .Parameter refreshToken If Refresh token is specified, the refresh_token flow will be included in the list of OAuth2 flows to try .Parameter clientSecret If ClientSecret is specified, the client_credentials flow will be included in the list of OAuth2 flows to try .Parameter credential If Credential is specified, the password flow will be included in the list of OAuth2 flows to try .Parameter includeDeviceLogin Include this switch if you want to include a device login prompt if no other way to authenticate succeeds .Parameter deviceLoginTimeout Timespan indicating the timeout while waiting for user to perform devicelogin. Default is 5 minutes. .Example $authContext = New-BcAuthContext -refreshToken $refreshTokenSecret.SecretValueText .Example $authContext = New-BcAuthContext -clientID $clientID -clientSecret $clientSecret .Example $authContext = New-BcAuthContext -includeDeviceLogin -deviceLoginTimeout ([TimeSpan]::FromHours(1)) #> function New-BcAuthContext { Param( [string] $clientID = "1950a258-227b-4e31-a9cf-717495945fc2", [string] $Resource = "https://api.businesscentral.dynamics.com/", [string] $tenantID = "Common", [string] $authority = "https://login.microsoftonline.com/$TenantID", [string] $refreshToken, [string] $scopes = "https://api.businesscentral.dynamics.com/.default", [SecureString] $clientSecret, [PSCredential] $credential, [switch] $includeDeviceLogin, [Timespan] $deviceLoginTimeout = [TimeSpan]::FromMinutes(5) ) $authContext = @{ "clientID" = $clientID "Resource" = $Resource "tenantID" = $tenantID "authority" = $authority "includeDeviceLogin" = $includeDeviceLogin "deviceLoginTimeout" = $deviceLoginTimeout } $subject = "$($Resource.TrimEnd('/'))/$tenantID" $accessToken = $null if ($clientSecret) { $TokenRequestParams = @{ Method = 'POST' Uri = "$($authority.TrimEnd('/'))/oauth2/v2.0/token" Body = @{ "grant_type" = "client_credentials" "scope" = $scopes "client_id" = $clientId "client_secret" = [System.Runtime.InteropServices.Marshal]::PtrToStringAuto([System.Runtime.InteropServices.Marshal]::SecureStringToBSTR($clientSecret)) } } try { Write-Host "Attempting authentication to $scopes using clientCredentials..." $TokenRequest = Invoke-RestMethod @TokenRequestParams -UseBasicParsing $global:TT = $TokenRequest $accessToken = $TokenRequest.access_token $jwtToken = Parse-JWTtoken -token $accessToken Write-Host -ForegroundColor Green "Authenticated as app $($jwtToken.appid)" try { $expiresOn = [Datetime]::new(1970,1,1).AddSeconds($jwtToken.exp) } catch { $expiresOn = [DateTime]::now.AddSeconds($TokenRequest) } $authContext += @{ "AccessToken" = $accessToken "UtcExpiresOn" = $expiresOn "RefreshToken" = $null "Credential" = $null "ClientSecret" = $clientSecret "scopes" = $scopes } if ($tenantID -eq "Common") { Write-Host "Authenticated to common, using tenant id $($jwtToken.tid)" $authContext.TenantId = $jwtToken.tid } } catch { $exception = $_.Exception Write-Host -ForegroundColor Red $exception.Message $accessToken = $null } } else { if ($credential) { $TokenRequestParams = @{ Method = 'POST' Uri = "$($authority.TrimEnd('/'))/oauth2/token" Body = @{ "grant_type" = "password" "client_id" = $ClientId "username" = $credential.UserName "password" = [System.Runtime.InteropServices.Marshal]::PtrToStringAuto([System.Runtime.InteropServices.Marshal]::SecureStringToBSTR($credential.Password)) "resource" = $Resource } } try { Write-Host "Attempting authentication to $subject using username/password..." $TokenRequest = Invoke-RestMethod @TokenRequestParams -UseBasicParsing $accessToken = $TokenRequest.access_token $jwtToken = Parse-JWTtoken -token $accessToken Write-Host -ForegroundColor Green "Authenticated from $($jwtToken.ipaddr) as user $($jwtToken.name) ($($jwtToken.upn))" $authContext += @{ "AccessToken" = $accessToken "UtcExpiresOn" = [Datetime]::new(1970,1,1).AddSeconds($TokenRequest.expires_on) "RefreshToken" = $TokenRequest.refresh_token "Credential" = $credential "ClientSecret" = $null "scopes" = "" } if ($tenantID -eq "Common") { Write-Host "Authenticated to common, using tenant id $($jwtToken.tid)" $authContext.TenantId = $jwtToken.tid } } catch { $exception = $_.Exception Write-Host -ForegroundColor Yellow $exception.Message.Replace('{EmailHidden}',$credential.UserName) $accessToken = $null } } if (!$accessToken -and $refreshToken) { $TokenRequestParams = @{ Method = 'POST' Uri = "$($authority.TrimEnd('/'))/oauth2/token" Body = @{ "grant_type" = "refresh_token" "client_id" = $ClientId "refresh_token" = $refreshToken } } try { Write-Host "Attempting authentication to $subject using refresh token..." $TokenRequest = Invoke-RestMethod @TokenRequestParams -UseBasicParsing $accessToken = $TokenRequest.access_token try { $jwtToken = Parse-JWTtoken -token $accessToken Write-Host -ForegroundColor Green "Authenticated using refresh token as user $($jwtToken.name) ($($jwtToken.upn))" $authContext += @{ "AccessToken" = $accessToken "UtcExpiresOn" = [Datetime]::new(1970,1,1).AddSeconds($TokenRequest.expires_on) "RefreshToken" = $TokenRequest.refresh_token "Credential" = $null "ClientSecret" = $null "scopes" = "" } if ($tenantID -eq "Common") { Write-Host "Authenticated to common, using tenant id $($jwtToken.tid)" $authContext.TenantId = $jwtToken.tid } } catch { $accessToken = $null throw "Invalid Access token" } } catch { Write-Host -ForegroundColor Yellow "Refresh token not valid" } } if (!$accessToken -and $includeDeviceLogin) { $deviceCodeRequest = $null $deviceLoginStart = [DateTime]::Now $accessToken = "" $cnt = 0 while ($accessToken -eq "" -and ([DateTime]::Now.Subtract($deviceLoginStart) -lt $deviceLoginTimeout)) { if (!($deviceCodeRequest)) { $DeviceCodeRequestParams = @{ Method = 'POST' Uri = "$($authority.TrimEnd('/'))/oauth2/devicecode" Body = @{ "client_id" = $ClientId "resource" = $Resource } } $deviceLoginStart = [DateTime]::Now Write-Host "Attempting authentication to $subject using device login..." $DeviceCodeRequest = Invoke-RestMethod @DeviceCodeRequestParams -UseBasicParsing Write-Host $DeviceCodeRequest.message -ForegroundColor Yellow Write-Host -NoNewline "Waiting for authentication" $TokenRequestParams = @{ Method = 'POST' Uri = "$($authority.TrimEnd('/'))/oauth2/token" Body = @{ "grant_type" = "urn:ietf:params:oauth:grant-type:device_code" "code" = $DeviceCodeRequest.device_code "client_id" = $ClientId } } } Start-Sleep -Seconds 1 try { $TokenRequest = Invoke-RestMethod @TokenRequestParams -UseBasicParsing $accessToken = $TokenRequest.access_token } catch { $tokenRequest = $null $exception = $_ try { $err = ($exception.ErrorDetails.Message | ConvertFrom-Json).error if ($err -eq "code_expired") { Write-Host Write-Host -ForegroundColor Red "Authentication request expired." $deviceCodeRequest = $null } elseif ($err -eq "expired_token") { Write-Host Write-Host -ForegroundColor Red "Authentication token expired." throw $exception } elseif ($err -eq "authorization_declined") { Write-Host Write-Host -ForegroundColor Red "Authentication request declined." throw $exception } elseif ($err -eq "authorization_pending") { if ($cnt++ % 5 -eq 0) { Write-Host -NoNewline "." } } else { Write-Host throw $exception } } catch { Write-Host throw $exception } } if ($accessToken) { try { $jwtToken = Parse-JWTtoken -token $accessToken Write-Host Write-Host -ForegroundColor Green "Authenticated from $($jwtToken.ipaddr) as user $($jwtToken.name) ($($jwtToken.upn))" $authContext += @{ "AccessToken" = $accessToken "UtcExpiresOn" = [Datetime]::new(1970,1,1).AddSeconds($TokenRequest.expires_on) "RefreshToken" = $TokenRequest.refresh_token "Credential" = $null "ClientSecret" = $null "scopes" = "" } if ($tenantID -eq "Common") { Write-Host "Authenticated to common, using tenant id $($jwtToken.tid)" $authContext.TenantId = $jwtToken.tid } } catch { $accessToken = $null throw "Invalid Access token" } } } } } if (!$accessToken) { Write-Host Write-Host -ForegroundColor Yellow "Authentication failed" return $null } return $authContext } Export-ModuleMember -Function New-BcAuthContext |