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(PHP ActiveX) Refresh a Dynamics CRM OAuth2 Access TokenDemonstrates how to refresh an expiring Dynamics CRM access token using the refresh token. endpoint. (If a REST API call fails with a 401 unauthorized error, an application can auto-recover by refreshing the access token, and then re-send the request using the new token.)
<?php // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // We previously obtained an access token and saved the JSON to a file using this example: // Get Dynamics CRM OAuth2 Access Token // This example will examine the JSON and expiration date, and if near expiration will // refresh the access token. // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.JsonObject') $json = new COM("Chilkat.JsonObject"); $success = $json->LoadFile('qa_data/tokens/dynamicsCrm.json'); if ($success != 1) { exit; } // The contents of the JSON look like this: // { // "token_type": "Bearer", // "scope": "user_impersonation", // "expires_in": "3599", // "ext_expires_in": "0", // "expires_on": "1524783438", // "not_before": "1524779538", // "resource": "https://mydomain.api.crm.dynamics.com", // "access_token": "...", // "refresh_token": "...", // "id_token": "..." // } // The "expires_on" value is a Unix time. // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.CkDateTime') $dtExpire = new COM("Chilkat.CkDateTime"); $dtExpire->SetFromUnixTime(0,$json->IntOf('expires_on')); // If this date/time expires within 10 minutes of the current system time, refresh the token. // OK, we need to refresh the access token by sending a POST... // // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.HttpRequest') $req = new COM("Chilkat.HttpRequest"); $req->AddParam('grant_type','refresh_token'); $req->AddParam('redirect_uri','http://localhost:3017/'); $req->AddParam('client_id','DYNAMICS-CRM-CLIENT-ID'); $req->AddParam('client_secret','DYNAMICS-CRM-SECRET-KEY'); $req->AddParam('refresh_token',$json->stringOf('refresh_token')); $req->AddParam('resource','https://mydynamicsdomain.api.crm.dynamics.com'); // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Http') $http = new COM("Chilkat.Http"); // resp is a Chilkat.HttpResponse $resp = $http->PostUrlEncoded('https://login.microsoftonline.com/DYNAMICS-ENDPOINT-GUID/oauth2/token',$req); if ($http->LastMethodSuccess != 1) { print $http->LastErrorText . "\n"; exit; } // Load the JSON response. $json->Load($resp->BodyStr); $json->EmitCompact = 0; // Show the JSON response. print $json->emit() . "\n"; print 'Response status code: ' . $resp->StatusCode . "\n"; // If the response status code is not 200, then it's an error. if ($resp->StatusCode != 200) { exit; } // If an "expires_on" member does not exist, then add the JSON member by // getting the current system date/time and adding the "expires_in" seconds. // This way we'll know when the token expires. if ($json->HasMember('expires_on') != 1) { $dtExpire->SetFromCurrentSystemTime(); $dtExpire->AddSeconds($json->IntOf('expires_in')); $json->AppendString('expires_on',$dtExpire->getAsUnixTimeStr(0)); } // Save the refreshed access token JSON to a file for future requests. // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.FileAccess') $fac = new COM("Chilkat.FileAccess"); $fac->WriteEntireTextFile('qa_data/tokens/dynamicsCrm.json',$json->emit(),'utf-8',0); ?> |
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