如何使用 PHP 中的 WS-Security 对受密码保护的 Web 服务进行身份验证？

使用 PHP 中的 WS-Security 连接到受密码保护的 Web 服务

针对受密码保护的 Web 服务进行身份验证可能是一项挑战，尤其是使用 HTTPS 时。在这种情况下，PHP 脚本可能会过早发起请求，从而导致错误。为了解决这个问题，我们可以扩展 SoapHeader 类来创建与 WS-Security 兼容的身份验证。

class WsseAuthHeader extends SoapHeader {

    private $wss_ns = 'http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd';

    function __construct($user, $pass, $ns = null) {
        if ($ns) {
            $this->wss_ns = $ns;
        }

        $auth = new stdClass();
        $auth->Username = new SoapVar($user, XSD_STRING, NULL, $this->wss_ns, NULL, $this->wss_ns); 
        $auth->Password = new SoapVar($pass, XSD_STRING, NULL, $this->wss_ns, NULL, $this->wss_ns);

        $username_token = new stdClass();
        $username_token->UsernameToken = new SoapVar($auth, SOAP_ENC_OBJECT, NULL, $this->wss_ns, 'UsernameToken', $this->wss_ns); 

        $security_sv = new SoapVar(
            new SoapVar($username_token, SOAP_ENC_OBJECT, NULL, $this->wss_ns, 'UsernameToken', $this->wss_ns),
            SOAP_ENC_OBJECT, NULL, $this->wss_ns, 'Security', $this->wss_ns);
        parent::__construct($this->wss_ns, 'Security', $security_sv, true);
    }
}

使用这个扩展类，我们可以设置身份验证：

$wsse_header = new WsseAuthHeader($username, $password);
$x = new SoapClient('{...}', array("trace" => 1, "exception" => 0));
$x->__setSoapHeaders(array($wsse_header));

将 WS-Security 与 Nonce 和时间戳结合使用

如果您需要 nonce 和时间戳来增强安全性：

class WsseAuthHeader extends SoapHeader
{
    private $wss_ns = 'http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd';
    private $wsu_ns = 'http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd';

    function __construct($user, $pass)
    {
        $created = gmdate('Y-m-d\TH:i:s\Z');
        $nonce = mt_rand();
        $passdigest = base64_encode(pack('H*', sha1(pack('H*', $nonce) . pack('a*', $created) . pack('a*', $pass))));

        $auth = new stdClass();
        $auth->Username = new SoapVar($user, XSD_STRING, NULL, $this->wss_ns, NULL, $this->wss_ns);
        $auth->Password = new SoapVar($pass, XSD_STRING, NULL, $this->wss_ns, NULL, $this->wss_ns);
        $auth->Nonce = new SoapVar($passdigest, XSD_STRING, NULL, $this->wss_ns, NULL, $this->wss_ns);
        $auth->Created = new SoapVar($created, XSD_STRING, NULL, $this->wss_ns, NULL, $this->wsu_ns);

        $username_token = new stdClass();
        $username_token->UsernameToken = new SoapVar($auth, SOAP_ENC_OBJECT, NULL, $this->wss_ns, 'UsernameToken', $this->wss_ns);

        $security_sv = new SoapVar(
            new SoapVar($username_token, SOAP_ENC_OBJECT, NULL, $this->wss_ns, 'UsernameToken', $this->wss_ns),
            SOAP_ENC_OBJECT, NULL, $this->wss_ns, 'Security', $this->wss_ns);
        parent::__construct($this->wss_ns, 'Security', $security_sv, true);
    }
}

请记住调整“用户名”、“密码” ”和“端点”值以匹配您的 Web 服务凭据和 URL。通过这些增强的身份验证方法，您可以从 PHP 安全地连接到受密码保护的 Web 服务。

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