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(PHP Extension) Xero API through an SOCKS Proxy

This example demonstrates connecting through a SOCKS proxy w/ 2-legged OAuth for a Xero private application.

This example requires Chilkat v9.5.0.64 or later

Chilkat PHP Downloads

PHP Extension for Windows, Linux, MAC OS X,
Alpine Linux, Solaris, OpenBSD, FreeBSD,
and Linux armhf/aarch64

<?php

// The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number.
// For example, if using Chilkat v9.5.0.48, then include as shown here:
include("chilkat_9_5_0.php");

// This example requires Chilkat v9.5.0.64 or later

// This sample code would typically be placed in a subroutine or function
// where the rest object is passed by reference.
// It does the OAuth1 setup and makes the initial connection.
$rest = new CkRest();

// Connect to the Xero server through an HTTP proxy, and then tell the REST object
// to use the socket connection.
$socket = new CkSocket();

// Set the SOCKS proxy domain or IP address, port, and SOCKS version number (4 or 5)
$socket->put_SocksHostname('192.168.1.100');
$socket->put_SocksPort(1080);
$socket->put_SocksVersion(5);
// Other properties exist for specifying a SOCKS proxy login and password,
// but these are not used in this example.

// Connect through the SOCKS proxy..
$bTls = true;
$port = 443;
$maxWaitMs = 5000;
$success = $socket->Connect('api.xero.com',$port,$bTls,$maxWaitMs);
if ($success != true) {
    print 'Connect Failure Error Code: ' . $socket->get_ConnectFailReason() . "\n";
    print $socket->lastErrorText() . "\n";
    exit;
}

// Use the SOCKS proxied TLS connection:
$success = $rest->UseConnection($socket,true);
if ($success != true) {
    print $rest->lastErrorText() . "\n";
    exit;
}

// OK, we're connected.  
// The UseConnection method has an internal reference to the underlying/internal socket.
// The application can does not need to keep its socket object in existence.
// -----------------------------------------------------------------
// Now setup the OAuth1 authenticator..

$consumerKey = 'XERO_PRIVATE_APP_KEY';
$consumerSecret = 'XERO_PRIVATE_APP_SECRET';

// Let's get our private key from our PFX (password protected), or the PEM (unprotected).
// You can decide which to use.  Either is OK, although I would recommend keeping your
// private keys in a PFX and not in an unprotected PEM.
$pfx = new CkPfx();
$success = $pfx->LoadPfxFile('qa_data/certs/xero_private_app/public_privatekey.pfx','PFX_PASSWORD');
if ($success != true) {
    print $pfx->lastErrorText() . "\n";
    exit;
}

// privKeyFromPfx is a CkPrivateKey
$privKeyFromPfx = $pfx->GetPrivateKey(0);
if ($pfx->get_LastMethodSuccess() != true) {
    print $pfx->lastErrorText() . "\n";
    exit;
}

// Or we can load from a PEM..
$privKeyFromPem = new CkPrivateKey();
$success = $privKeyFromPem->LoadPemFile('qa_data/certs/xero_private_app/privatekey.pem');
if ($success != true) {
    print $privKeyFromPem->lastErrorText() . "\n";
    exit;
}

// Note: There are many other means for loading a private key, including
// from other formats and directly from memory (i.e. not file-based).

$oauth1 = new CkOAuth1();
$oauth1->put_ConsumerKey($consumerKey);
$oauth1->put_ConsumerSecret($consumerSecret);
$oauth1->put_Token($consumerKey);
$oauth1->put_TokenSecret($consumerSecret);
$oauth1->put_SignatureMethod('RSA-SHA1');
$oauth1->SetRsaKey($privKeyFromPfx);

// Install the OAuth1 authenticator.
$rest->SetAuthOAuth1($oauth1,false);

print 'OK, the Xero OAuth1 is initialized and the REST object is ready to make REST API calls..' . "\n";

// -----------------------------------------------------------------
// Make a call to verify that OAuth1 through an HTTP proxy works..

// Get the full list of contacts.
$sbXml = new CkStringBuilder();
$success = $rest->FullRequestNoBodySb('GET','/api.xro/2.0/Contacts',$sbXml);
if ($success != true) {
    print $rest->lastErrorText() . "\n";
    exit;
}

// A 200 response is expected for actual success.
if ($rest->get_ResponseStatusCode() != 200) {
    print $sbXml->getAsString() . "\n";
    exit;
}

// Iterate over the contacts..
$bAutoTrim = false;
$xml = new CkXml();
$xml->LoadSb($sbXml,$bAutoTrim);
$xml->SaveXml('qa_cache/xero_contacts.xml');

// How many records exist?
$recordCount = $xml->NumChildrenAt('Contacts');
print 'numRecords = ' . $recordCount . "\n";

$i = 0;
while ($i < $recordCount) {
    $xml->put_I($i);
    print 'ContactID: ' . $xml->getChildContent('Contacts|Contact[i]|ContactID') . "\n";
    $i = $i + 1;
}


?>

 

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