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(PHP ActiveX) Xero OAuth1 Authorization (3-legged)

Demonstrates 3-legged OAuth1 authorization for Xero

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

$consumerKey = 'XERO_CONSUMER_KEY';
$consumerSecret = 'XERO_CONSUMER_SECRET';

$requestTokenUrl = 'https://api.xero.com/oauth/RequestToken';
$authorizeUrl = 'https://api.xero.com/oauth/Authorize';
$accessTokenUrl = 'https://api.xero.com/oauth/AccessToken';

// The port number is picked at random. It's some unused port that won't likely conflict with anything else..
$callbackUrl = 'http://localhost:3017/';
$callbackLocalPort = 3017;

// The 1st step in 3-legged OAuth1.0a is to send a POST to the request token URL to obtain an OAuth Request Token
$http = new COM("Chilkat_9_5_0.Http");

$http->OAuth1 = 1;
$http->OAuthConsumerKey = $consumerKey;
$http->OAuthConsumerSecret = $consumerSecret;
$http->OAuthCallback = $callbackUrl;

$req = new COM("Chilkat_9_5_0.HttpRequest");
// resp is a Chilkat_9_5_0.HttpResponse
$resp = $http->PostUrlEncoded($requestTokenUrl,$req);
if ($http->LastMethodSuccess != 1) {
    print $http->LastErrorText . "\n";
    exit;
}

// If successful, the resp.BodyStr contains something like this:  
// oauth_token=-Wa_KwAAAAAAxfEPAAABV8Qar4Q&oauth_token_secret=OfHY4tZBX2HK4f7yIw76WYdvnl99MVGB&oauth_callback_confirmed=true
print $resp->BodyStr . "\n";

$hashTab = new COM("Chilkat_9_5_0.Hashtable");
$hashTab->AddQueryParams($resp->BodyStr);

$requestToken = $hashTab->lookupStr('oauth_token');
$requestTokenSecret = $hashTab->lookupStr('oauth_token_secret');
$http->OAuthTokenSecret = $requestTokenSecret;

print 'oauth_token = ' . $requestToken . "\n";
print 'oauth_token_secret = ' . $requestTokenSecret . "\n";

// ---------------------------------------------------------------------------
// The next step is to form a URL to send to the authorizeUrl
// This is an HTTP GET that we load into a popup browser.
$sbUrlForBrowser = new COM("Chilkat_9_5_0.StringBuilder");
$sbUrlForBrowser->Append($authorizeUrl);
$sbUrlForBrowser->Append('?oauth_token=');
$sbUrlForBrowser->Append($requestToken);
$urlForBrowser = $sbUrlForBrowser->getAsString();

// When the urlForBrowser is loaded into a browser, the response from Xero will redirect back to localhost:3017
// We'll need to start a socket that is listening on port 3017 for the callback from the browser.
$listenSock = new COM("Chilkat_9_5_0.Socket");

$backLog = 5;
$success = $listenSock->BindAndListen($callbackLocalPort,$backLog);
if ($success != 1) {
    print $listenSock->LastErrorText . "\n";
    exit;
}

// Wait for the browser's connection in a background thread.
// (We'll send load the URL into the browser following this..)
// Wait a max of 60 seconds before giving up.
$maxWaitMs = 60000;
// task is a Chilkat_9_5_0.Task
$task = $listenSock->AcceptNextConnectionAsync($maxWaitMs);
$task->Run();

//  At this point, your application should load the URL in a browser.
//  For example,
//  in C#:  System.Diagnostics.Process.Start(urlForBrowser);
//  in Java: Desktop.getDesktop().browse(new URI(urlForBrowser));
//  in VBScript: Set wsh=WScript.CreateObject("WScript.Shell")
//               wsh.Run urlForBrowser
// in Xojo: ShowURL(url)  (see http://docs.xojo.com/index.php/ShowURL)
// in Dataflex: Runprogram Background "c:\Program Files\Internet Explorer\iexplore.exe" sUrl        
//  The Xero account owner would interactively accept or deny the authorization request.

//  Add the code to load the url in a web browser here...
//  Add the code to load the url in a web browser here...
//  Add the code to load the url in a web browser here...
// System.Diagnostics.Process.Start(urlForBrowser);

// Wait for the listenSock's task to complete.
$success = $task->Wait($maxWaitMs);
if (!$success or ($task->StatusInt != 7) or ($task->TaskSuccess != 1)) {
    if (!$success) {
        // The task.LastErrorText applies to the Wait method call.
        print $task->LastErrorText . "\n";
    }
    else {
        // The ResultErrorText applies to the underlying task method call (i.e. the AcceptNextConnection)
        print $task->Status . "\n";
        print $task->ResultErrorText . "\n";
    }

    exit;
}

// If we get to this point, the connection from the browser arrived and was accepted.

// We no longer need the listen socket...
// Stop listening on port 3017.
$listenSock->Close(10);

// First get the connected socket.
$sock = new COM("Chilkat_9_5_0.Socket");
$sock->LoadTaskResult($task);

// Read the start line of the request..
$startLine = $sock->receiveUntilMatch('\r\n');
if ($sock->LastMethodSuccess != 1) {
    print $sock->LastErrorText . "\n";
    exit;
}

// Read the request header.
$requestHeader = $sock->receiveUntilMatch('\r\n\r\n');
if ($sock->LastMethodSuccess != 1) {
    print $sock->LastErrorText . "\n";
    exit;
}

// The browser SHOULD be sending us a GET request, and therefore there is no body to the request.
// Once the request header is received, we have all of it.
// We can now send our HTTP response.
$sbResponseHtml = new COM("Chilkat_9_5_0.StringBuilder");
$sbResponseHtml->Append('<html><body><p>Chilkat thanks you!</b></body</html>');

$sbResponse = new COM("Chilkat_9_5_0.StringBuilder");
$sbResponse->Append('HTTP/1.1 200 OK\r\n');
$sbResponse->Append('Content-Length: ');
$sbResponse->AppendInt($sbResponseHtml->Length);
$sbResponse->Append('\r\n');
$sbResponse->Append('Content-Type: text/html\r\n');
$sbResponse->Append('\r\n');
$sbResponse->AppendSb($sbResponseHtml);

$sock->SendString($sbResponse->getAsString());
$sock->Close(50);

// The information we need is in the startLine.
// For example, the startLine will look something like this:
//  GET /?oauth_token=abcdRQAAZZAAxfBBAAABVabcd_k&oauth_verifier=9rdOq5abcdCe6cn8M3jabcdj3Eabcd&org=mUkIZabcdKEababcd189t0 HTTP/1.1
$sbStartLine = new COM("Chilkat_9_5_0.StringBuilder");
$sbStartLine->Append($startLine);
$numReplacements = $sbStartLine->Replace('GET /?','');
$numReplacements = $sbStartLine->Replace(' HTTP/1.1','');
$sbStartLine->Trim();

// oauth_token=abcdRQAAZZAAxfBBAAABVabcd_k&oauth_verifier=9rdOq5abcdCe6cn8M3jabcdj3Eabcd&org=mUkIZabcdKEababcd189t0
print 'startline: ' . $sbStartLine->getAsString() . "\n";

$hashTab->Clear();
$hashTab->AddQueryParams($sbStartLine->getAsString());

$requestToken = $hashTab->lookupStr('oauth_token');
$authVerifier = $hashTab->lookupStr('oauth_verifier');

// ------------------------------------------------------------------------------
// Finally , we must exchange the OAuth Request Token for an OAuth Access Token.

$http->OAuthToken = $requestToken;
$http->OAuthVerifier = $authVerifier;
// resp is a Chilkat_9_5_0.HttpResponse
$resp = $http->PostUrlEncoded($accessTokenUrl,$req);
if ($http->LastMethodSuccess != 1) {
    print $http->LastErrorText . "\n";
    exit;
}

// Make sure a successful response was received.
if ($resp->StatusCode != 200) {
    print $resp->StatusLine . "\n";
    print $resp->Header . "\n";
    print $resp->BodyStr . "\n";
    exit;
}

// If successful, the resp.BodyStr contains something like this:
// oauth_token=85123455-fF41296Bi3daM8eCo9Y5vZabcdxXpRv864plYPOjr&oauth_token_secret=afiYJOgabcdSfGae7BDvJVVTwys8fUGpra5guZxbmFBZo&oauth_expires_in=1800&xero_org_muid=abcdecNhPKabcdNjz189t0
print $resp->BodyStr . "\n";

$hashTab->Clear();
$hashTab->AddQueryParams($resp->BodyStr);

$accessToken = $hashTab->lookupStr('oauth_token');
$accessTokenSecret = $hashTab->lookupStr('oauth_token_secret');
$orgMuid = $hashTab->lookupStr('xero_org_muid');
$expiresIn = $hashTab->lookupStr('oauth_expires_in');

// The access token + secret is what should be saved and used for
// subsequent REST API calls.
print 'Access Token = ' . $accessToken . "\n";
print 'Access Token Secret = ' . $accessTokenSecret . "\n";
print 'xero_org_muid = ' . $orgMuid . "\n";
print 'oauth_expires_in  = ' . $expiresIn . "\n";

// Save this access token for future calls.
// Just in case we need xero_org_muid and oauth_expires_in, save those also..
$json = new COM("Chilkat_9_5_0.JsonObject");
$json->AppendString('oauth_token',$accessToken);
$json->AppendString('oauth_token_secret',$accessTokenSecret);
$json->AppendString('xero_org_muid',$orgMuid);
$json->AppendString('oauth_expires_in',$expiresIn);

$fac = new COM("Chilkat_9_5_0.FileAccess");
$fac->WriteEntireTextFile('qa_data/tokens/xero.json',$json->emit(),'utf-8',0);

print 'Success.' . "\n";

?>

 

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