(Perl) Azure AD Service-to-service access token request

Send an Azure AD service-to-service token request to get an access token using a shared secret.

For more information, see https://docs.microsoft.com/en-us/azure/active-directory/develop/v1-oauth2-client-creds-grant-flow#service-to-service-access-token-request

Chilkat Perl Downloads Perl Module for Windows, MacOS, Linux, Alpine Linux, Solaris

use chilkat();

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

$http = chilkat::CkHttp->new();

# To see the exact HTTP request sent and the response, set the SessionLogFilename property:
$http->put_SessionLogFilename("qa_output/chilkatHttpLog.txt");

$req = chilkat::CkHttpRequest->new();

# Set the following request params:
# grant_type 	required 	Specifies the requested grant type. In a Client Credentials Grant flow, the value must be client_credentials.
# 
# client_id 	required 	Specifies the Azure AD client id of the calling web service. 
#     To find the calling application's client ID, in the Azure portal, click Azure Active Directory, click App registrations, click the application. 
#     The client_id is the Application ID
# 
# client_secret 	required 	Enter a key registered for the calling web service or daemon application in Azure AD. 
#     To create a key, in the Azure portal, click Azure Active Directory, click App registrations, click the application, click Settings, click Keys, and add a Key.
#     URL-encode this secret when providing it.
# 
# resource 	required 	Enter the App ID URI of the receiving web service. To find the App ID URI, in the Azure portal, click Azure Active Directory, 
#     click App registrations, click the service application, and then click Settings and Properties.

$req->AddParam("grant_type","client_credentials");
$req->AddParam("client_id","MY_CLIENT_ID");
$req->AddParam("client_secret","MY_CLIENT_SECRET");
$req->AddParam("resource","https://service.contoso.com/");

# The URL passed to PostUrlEncoded has this form:   https://login.microsoftonline.com/<tenant_id>/oauth2/token
# resp is a HttpResponse
$resp = $http->PostUrlEncoded("https://login.microsoftonline.com/<tenant_id>/oauth2/token",$req);
if ($http->get_LastMethodSuccess() == 0) {
    print $http->lastErrorText() . "\r\n";
    exit;
}

$respStatusCode = $resp->get_StatusCode();
print "Response Status Code = " . $respStatusCode . "\r\n";

$json = chilkat::CkJsonObject->new();
$json->put_EmitCompact(0);
$json->Load($resp->bodyStr());
print "Response JSON:" . "\r\n";
print $json->emit() . "\r\n";

if ($respStatusCode >= 400) {
    print "Response Header:" . "\r\n";
    print $resp->header() . "\r\n";
    print "Failed." . "\r\n";

    exit;
}

# Sample response:

# {
#   "token_type": "Bearer",
#   "expires_in": "3599",
#   "ext_expires_in": "3599",
#   "expires_on": "1570059833",
#   "not_before": "1570055933",
#   "resource": "https://adminchilkatsoft.onmicrosoft.com/eb1b8ced-76b7-4845-aec5-d3e91776e345",
#   "access_token": "eyJ0eXAiO ... pmgw"
# }

# To get the items from the JSON....
$token_type = $json->stringOf("token_type");
$expires_in = $json->stringOf("expires_in");
$ext_expires_in = $json->stringOf("ext_expires_in");
$expires_on = $json->stringOf("expires_on");
$not_before = $json->stringOf("not_before");
$resource = $json->stringOf("resource");
$access_token = $json->stringOf("access_token");