(Perl) Calendar: Refresh Expired OAuth2 Access Token

Refreshes an expired OAuth2 access token.

Note: This example requires Chilkat v11.0.0 or greater.

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

use chilkat();

$success = 0;

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

$json = chilkat::CkJsonObject->new();
$success = $json->LoadFile("qa_data/tokens/msGraphCalendar.json");
if ($success != 1) {
    exit;
}

$req = chilkat::CkHttpRequest->new();
$req->AddParam("grant_type","refresh_token");
$req->AddParam("redirect_uri","http://localhost:3017/");
$req->AddParam("client_id","MICROSOFT-GRAPH-CLIENT-ID");
$req->AddParam("client_secret","MICROSOFT-GRAPH-CLIENT-SECRET");
$req->AddParam("refresh_token",$json->stringOf("refresh_token"));
$req->AddParam("scope","openid profile offline_access user.readwrite calendars.readwrite files.readwrite");

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

$req->put_HttpVerb("POST");
$req->put_ContentType("application/x-www-form-urlencoded");

$resp = chilkat::CkHttpResponse->new();
$success = $http->HttpReq("https://login.microsoftonline.com/common/oauth2/v2.0/token",$req,$resp);
if ($success == 0) {
    print $http->lastErrorText() . "\r\n";
    exit;
}

# Load the JSON response.
$json->Load($resp->bodyStr());
$json->put_EmitCompact(0);

# Show the JSON response.
print $json->emit() . "\r\n";

print "Response status code: " . $resp->get_StatusCode() . "\r\n";

# If the response status code is not 200, then it's an error.
if ($resp->get_StatusCode() != 200) {
    exit;
}

# Save the refreshed access token JSON to a file for future requests.
$fac = chilkat::CkFileAccess->new();
$fac->WriteEntireTextFile("qa_data/tokens/msGraphCalendar.json",$json->emit(),"utf-8",0);

print "Success." . "\r\n";