Perl Requires Chilkat v10.1.3+

Datev OAuth2 Access Token

See more Datev Examples

Demonstrates how to get a Datev OAuth2 access token from a desktop application or script. Perl

use chilkat();

$success = 0;

#  To further clarify, see OAuth 2.0 Authorization Flow

$oauth2 = chilkat::CkOAuth2->new();

#  Your Datev app should use "http://localhost" (no trailing forward slash) for the redirect URL.
$oauth2->put_ListenPort(3017);

#  

$oauth2->put_AuthorizationEndpoint("https://login.datev.de/openidsandbox/authorize");
$oauth2->put_TokenEndpoint("https://sandbox-api.datev.de/token");

#  Replace this with your actual client ID.
$oauth2->put_ClientId("DATEV_CLIENT_ID");
$oauth2->put_ClientSecret("DATEV_CLIENT_SECRET");

$oauth2->put_CodeChallenge(1);
$oauth2->put_CodeChallengeMethod("S256");

$oauth2->put_Scope("openid profile email datev:accounting:clients accounting:documents datev:accounting:extf-files-import");

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

#  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() . "\r\n";
    exit;
}

#  Wait for the interactive user to grant permission in the interactive browser session.
#  We'll wait for a max of 90 seconds.
$numMsWaited = 0;
while (($numMsWaited < 90000) and ($oauth2->get_AuthFlowState() < 3)) {
    $oauth2->SleepMs(100);
    $numMsWaited = $numMsWaited + 100;
}

#  If there was no response from the browser within 90 seconds, then 
#  the AuthFlowState will be equal to 1 or 2.
#  1: Waiting for Redirect. The OAuth2 background thread is waiting to receive the redirect HTTP request from the browser.
#  2: Waiting for Final Response. The OAuth2 background thread is waiting for the final access token response.
#  In that case, cancel the background task started in the call to StartAuth.
if ($oauth2->get_AuthFlowState() < 3) {
    $oauth2->Cancel();
    print "No response from the browser!" . "\r\n";
    exit;
}

#  Check the AuthFlowState to see if authorization was granted, denied, or if some error occurred
#  The possible AuthFlowState values are:
#  3: Completed with Success. The OAuth2 flow has completed, the background thread exited, and the successful JSON response is available in AccessTokenResponse property.
#  4: Completed with Access Denied. The OAuth2 flow has completed, the background thread exited, and the error JSON is available in AccessTokenResponse property.
#  5: Failed Prior to Completion. The OAuth2 flow failed to complete, the background thread exited, and the error information is available in the FailureInfo property.
if ($oauth2->get_AuthFlowState() == 5) {
    print "OAuth2 failed to complete." . "\r\n";
    print $oauth2->failureInfo() . "\r\n";
    exit;
}

if ($oauth2->get_AuthFlowState() == 4) {
    print "OAuth2 authorization was denied." . "\r\n";
    print $oauth2->accessTokenResponse() . "\r\n";
    exit;
}

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

#  Save the full JSON access token response to a file.
$sbJson = chilkat::CkStringBuilder->new();
$sbJson->Append($oauth2->accessTokenResponse());
$sbJson->WriteFile("qa_data/tokens/datev.json","utf-8",0);

#  The saved JSON response looks like this:

#  {
#  	"refresh_token": "ZDA5Y .... FFhTXc9",
#  	"refresh_token_expires_in": 39600,
#  	"id_token": "eyJ .... Q9w",
#  	"access_token": "MTM .... 1UDA9",
#  	"token_type": "bearer",
#  	"expires_in": 900		
#  }

print "OAuth2 authorization granted!" . "\r\n";
print "Access Token = " . $oauth2->accessToken() . "\r\n";