Question

我正在使用VWS - PHP Samples，它可以按照预期从本地PC运行，但是当我将其上传到服务器时，它会给我以下错误：

POST 999e93717344885fd7c458301a5b00c9 application / json Thu，Sep Sep 2014 08:14:20 GMT / targetsError：需要对https：//的OpenSSL支持请求

域名是使用GoDaddy的证书启用https，出了什么问题？

define("SERVER_ACCESS_KEY", "12345678");
            define("SERVER_SECRET_KEY", "654321");
            define("TARGET_NAME", $campaignname);
            define("IMAGE_LOCATION", $directory . '/dispatcher.' . $path_parts['extension']);

            $this->load->library('Vuforia/PostNewTarget');

示例代码为 SignatureBuilder.php ：

<?php

/**
 * Copyright (c) 2011-2013 Qualcomm Austria Research Center GmbH. All rights Reserved. Nothing in these materials is an offer to sell any of the components or devices referenced herein. Qualcomm is a trademark of QUALCOMM Incorporated, registered in the United States and other countries.Vuforia is a trademark of QUALCOMM Incorporated. Trademarks of QUALCOMM Incorporated are used with permission.
 * Vuforia SDK is a product of Qualcomm Austria Research Center GmbH. Vuforia Cloud Recognition Service is provided by Qualcomm Technologies, Inc..
 *
 * This Vuforia (TM) sample code provided in source code form (the "Sample Code") is made available to view for reference purposes only. 
 * If you would like to use the Sample Code in your web application, you must first download the Vuforia Software Development Kit and agree to the terms and conditions of the License Agreement for the Vuforia Software Development Kit, which may be found at https://developer.vuforia.com/legal/license. 
 * Any use of the Sample Code is subject in all respects to all of the terms and conditions of the License Agreement for the Vuforia Software Development Kit and the Vuforia Cloud Recognition Service Agreement. 
 * If you do not agree to all the terms and conditions of the License Agreement for the Vuforia Software Development Kit and the Vuforia Cloud Recognition Service Agreement, then you must not retain or in any manner use any of the Sample Code.
 * 
 */

class SignatureBuilder{

    private $contentType = '';
    private $hexDigest = 'd41d8cd95fa11b204e7600998ecf8427e'; // Hex digest of an empty string

    public function tmsSignature( $request , $secret_key ){

        $method = $request->getMethod();
        // The HTTP Header fields are used to authenticate the request
        $requestHeaders = $request->getHeaders();
        // note that header names are converted to lower case
        $dateValue = $requestHeaders['date'];

        $requestPath = $request->getURL()->getPath();

        // Not all requests will define a content-type
        if( isset( $requestHeaders['content-type'] ))
            $this->contentType = $requestHeaders['content-type'];

        if ( $method == 'GET' || $method == 'DELETE' ) {
            // Do nothing because the strings are already set correctly
        } else if ( $method == 'POST' || $method == 'PUT' ) {
            // If this is a POST or PUT the request should have a request body
            $this->hexDigest = md5( $request->getBody() , false );

        } else {
            print("ERROR: Invalid content type passed to Sig Builder");
        }



        $toDigest = $method . "\n" . $this->hexDigest . "\n" . $this->contentType . "\n" . $dateValue . "\n" . $requestPath ;

        echo $toDigest;

        $shaHashed = "";

        try {
            // the SHA1 hash needs to be transformed from hexidecimal to Base64
            $shaHashed = $this->hexToBase64( hash_hmac("sha1", $toDigest , $secret_key) );

        } catch ( Exception $e) {
            $e->getMessage();
        }

        return $shaHashed;  
    }


    private function hexToBase64($hex){

        $return = "";

        foreach(str_split($hex, 2) as $pair){

            $return .= chr(hexdec($pair));

        }

        return base64_encode($return);
    }


}

示例代码为 PostNewTarget.php ：

<?php

require_once 'HTTP/Request2.php';
require_once 'SignatureBuilder.php';

// See the Vuforia Web Services Developer API Specification - https://developer.vuforia.com/resources/dev-guide/retrieving-target-cloud-database
// The PostNewTarget sample demonstrates how to update the attributes of a target using a JSON request body. This example updates the target's metadata.

class PostNewTarget{

    //Server Keys
    private $access_key     = SERVER_ACCESS_KEY;
    private $secret_key     = SERVER_SECRET_KEY;

    //private $targetId         = "eda03583982a41dcbe9ca7f30731b9b1";
    private $url            = "https://vws.vuforia.com";
    private $requestPath    = "/targets";
    private $request;       // the HTTP_Request2 object
    private $jsonRequestObject;

    private $targetName     = TARGET_NAME;
    private $imageLocation  = IMAGE_LOCATION;

    function PostNewTarget(){

        $this->jsonRequestObject = json_encode( array( 'width'=>320.0 , 'name'=>$this->targetName , 'image'=>$this->getImageAsBase64() , 'application_metadata'=>base64_encode("Vuforia test metadata") , 'active_flag'=>1 ) );

        $this->execPostNewTarget();

    }

    function getImageAsBase64(){

        $file = file_get_contents( $this->imageLocation );

        if( $file ){

            $file = base64_encode( $file );
        }

        return $file;

    }

    public function execPostNewTarget(){

        $this->request = new HTTP_Request2();
        $this->request->setMethod( HTTP_Request2::METHOD_POST );
        $this->request->setBody( $this->jsonRequestObject );

        $this->request->setConfig(array(
                'ssl_verify_peer' => false
        ));

        $this->request->setURL( $this->url . $this->requestPath );

        // Define the Date and Authentication headers
        $this->setHeaders();


        try {

            $response = $this->request->send();

            if (200 == $response->getStatus() || 201 == $response->getStatus() ) {
                echo $response->getBody();
            } else {
                echo 'Unexpected HTTP status: ' . $response->getStatus() . ' ' .
                        $response->getReasonPhrase(). ' ' . $response->getBody();
            }
        } catch (HTTP_Request2_Exception $e) {
            echo 'Error: ' . $e->getMessage();
        }


    }

    private function setHeaders(){
        $sb =   new SignatureBuilder();
        $date = new DateTime("now", new DateTimeZone("GMT"));

        // Define the Date field using the proper GMT format
        $this->request->setHeader('Date', $date->format("D, d M Y H:i:s") . " GMT" );

        $this->request->setHeader("Content-Type", "application/json" );
        // Generate the Auth field value by concatenating the public server access key w/ the private query signature for this request
        $this->request->setHeader("Authorization" , "VWS " . $this->access_key . ":" . $sb->tmsSignature( $this->request , $this->secret_key ));

    }
}

Loaded Modules

Configure Command

当我尝试安装OpenSSL时

    yum install php-openssl openssl
Loaded plugins: fastestmirror, security
Loading mirror speeds from cached hostfile
 * base: centos.mirrors.atwab.net
 * extras: centos.mirrors.atwab.net
 * updates: centos.mirrors.atwab.net
base                                                                                                                                                                                                              | 3.7 kB     00:00     
extras                                                                                                                                                                                                            | 3.3 kB     00:00     
updates                                                                                                                                                                                                           | 3.4 kB     00:00     
updates/primary_db                                                                                                                                                                                                | 5.3 MB     00:00     
Setting up Install Process
No package php-openssl available.
Package openssl-1.0.1e-16.el6_5.15.x86_64 already installed and latest version
Nothing to do

我试过这段代码看看openssl是否可用：

if (!extension_loaded('openssl')) {
    echo "no openssl extension loaded.";
}

结果是：

没有加载openssl扩展。

这是在CentOS上 - PHP版本5.2.17

Answer 1

如果您使用的是RHEL Linux，例如CentOS yum install php-openssl openssl

如果您不使用CentOS或RHEL，请评论您使用的内容，以便我可以为您获取正确的命令，如果这不起作用yum update

您可以使用apt-get而不是yum例如apt-get install openssl

在ubuntu上尝试相同的操作

检查你的php.ini文件 extension=php_openssl.so如果不存在则添加...

Answer 2

错误：需要对https：// requests
的OpenSSL支持

当HTTP_Request2在stream transports list中找不到ssl时，会发生此错误。 OpenSSL PHP extension必须为installed才能使用https stream protocol wrapper。

这与Apache的mod_ssl或您的网站是否通过https提供无关。这是关于PHP连接到URL "https://vws.vuforia.com"来执行请求。

如何解决错误：需要OpenSSL支持https：// requests？

2 个答案: