#!/usr/bin/php
<?php
# This is a Zenfolio PHP wrapper using SOAP calls
# You need to process the Zenfolio WSDL file here: http://www.zenfolio.com/zf/api/zfapi.asmx?wsdl
# A lot of information was gleaned from the Zenfolio Public API here: http://www.zenfolio.com/zf/help/?topic=api/guide/overview/soap
# And the PHP SOAP introduction here: http://devzone.zend.com/node/view/id/689
#

$userlogin = "username";
$userpass = "password";

$client = new SoapClient("http://www.zenfolio.com/zf/api/zfapi.asmx?wsdl");

$args = array ('loginName' => $userlogin);
$AuthChallenge = $client->GetChallenge($args);
$PasswordSalt = ($AuthChallenge->GetChallengeResult->PasswordSalt);
$Challenge = ($AuthChallenge->GetChallengeResult->Challenge);

$unpackedSalt = unpack("H*",$PasswordSalt);
$unpackedChallenge = unpack("H*",$Challenge);
$packedChallenge = pack("H*",$unpackedChallenge[1]);

$utfPass = unpack("H*",utf8_encode($userpass));
$combo = pack("H*",$unpackedSalt[1].$utfPass[1]);

$pwHash = hash("sha256",$combo);
$combo2 = pack("H*",$unpackedChallenge[1].$pwHash);
$Proof = hash("sha256",$combo2);
$packedProof = pack("H*",$Proof);

$args = array ('challenge' => $packedChallenge,
               'proof' => $packedProof);
$AuthToken = $client->Authenticate($args);
print_r($AuthToken);

?>