PHP ActiveX

Twinfield OAuth2 for Desktop App or Script

See more OAuth2 Examples

Demonstrates how to get a Twinfield OAuth2 access token from a desktop application or script. PHP ActiveX

<?php

$success = 0;

// For more information about the OAuth2, see OAuth 2.0 Authorization Flow

$oauth2 = new COM("Chilkat.OAuth2");

// This should be the port in the localhost callback URL for your app.  
// The callback URL would look like "http://localhost:3017/" if the port number is 3017.
$oauth2->ListenPort = 3017;

$oauth2->AuthorizationEndpoint = 'https://login.twinfield.com/auth/authentication/connect/authorize';
$oauth2->TokenEndpoint = 'https://login.twinfield.com/auth/authentication/connect/token';

// Replace these with actual values.
$oauth2->ClientId = 'CLIENT_ID';
$oauth2->ClientSecret = 'CLIENT_SECRET';

$oauth2->Scope = 'openid twf.user twf.organisation twf.organisationUser offline_access';

$oauth2->CodeChallenge = 1;
$oauth2->CodeChallengeMethod = 'S256';

// Twinfield requires that the request to exchange the authorization code for a token must be a GET.
// (In most cases, OAuth2 is implemented where the exchange for token HTTP request is a POST.)
// Note: The exchange-for-token happens within Chilkat in a background thread.  After the user interactively 
// accepts or denies authorization, the browser receives the response and redirects to localhost:<port>,
// where Chilkat is waiting on a background thread to receive the redirect, process it, and then send the HTTP request
// to exchange the code for a token.  This happens internally while your code below is waiting for the authorization..)
$oauth2->UncommonOptions = 'EXCHANGE_CODE_FOR_TOKEN_USING_GET';

// Begin the OAuth2 Authorization code flow.  This returns a URL that should be loaded in a browser.
$url = $oauth2->startAuth();
if ($oauth2->LastMethodSuccess != 1) {
    print $oauth2->LastErrorText . "\n";
    exit;
}

print 'url = ' . $url . "\n";

// Launch the default browser on the system and navigate to the url.
// The LaunchBrowser method was added in Chilkat v10.1.2.
$success = $oauth2->LaunchBrowser($url);
if ($success == 0) {
    print $oauth2->LastErrorText . "\n";
    exit;
}

// Wait for the user to approve or deny authorization in the browser.
$numMsWaited = 0;
while (($numMsWaited < 90000) and ($oauth2->AuthFlowState < 3)) {
    $oauth2->SleepMs(100);
    $numMsWaited = $numMsWaited + 100;
}

// If the browser does not respond within the specified time, AuthFlowState will be:
// 
// 1: Waiting for Redirect - The OAuth2 background thread is waiting for the browser's redirect request.
// 2: Waiting for Final Response - The thread is awaiting the final access token response.
// In either case, cancel the background task initiated by StartAuth.

if ($oauth2->AuthFlowState < 3) {
    $oauth2->Cancel();
    print 'No response from the browser!' . "\n";
    exit;
}

// Check AuthFlowState to determine if authorization was granted, denied, or failed:
// 
// 3: Success - OAuth2 flow completed, the background thread exited, and the successful response is in AccessTokenResponse.
// 4: Access Denied - OAuth2 flow completed, the background thread exited, and the error response is in AccessTokenResponse.
// 5: Failure - OAuth2 flow failed before completion, the background thread exited, and error details are in FailureInfo.

if ($oauth2->AuthFlowState == 5) {
    print 'OAuth2 failed to complete.' . "\n";
    print $oauth2->FailureInfo . "\n";
    exit;
}

if ($oauth2->AuthFlowState == 4) {
    print 'OAuth2 authorization was denied.' . "\n";
    print $oauth2->AccessTokenResponse . "\n";
    exit;
}

if ($oauth2->AuthFlowState != 3) {
    print 'Unexpected AuthFlowState:' . $oauth2->AuthFlowState . "\n";
    exit;
}

print 'OAuth2 authorization granted!' . "\n";
print 'Access Token = ' . $oauth2->AccessToken . "\n";

// Get the full JSON response:
$json = new COM("Chilkat.JsonObject");
$json->Load($oauth2->AccessTokenResponse);
$json->EmitCompact = 0;

// The JSON response looks like this:

print $json->emit() . "\n";

// Save the JSON to a file for future requests.
$fac = new COM("Chilkat.FileAccess");
$fac->WriteEntireTextFile('qa_data/tokens/twinfield.json',$json->emit(),'utf-8',0);

?>