javascript - 我如何知道用户是否使用 javascript 或 php 使用同一台计算机或不同计算机登录

Question

我正在开发一个安全 API，它将根据用户使用系统的方式对用户进行身份验证。其中包括他的打字模式、打字速度和很多东西。其中一个变量是用户的计算机，无论他是否每次都使用同一台计算机登录。我认为计算机的 mac 地址对我来说可以解决问题。我搜索了很多，但找不到这个问题的任何结果。 请帮我。如果您的答案是用 javascript 或 php 编写的，那就太好了。

Answer 1

识别机器或浏览器并不是 100% 万无一失。但您可以尝试检查用户是否使用相同的浏览器进行后续连接。 Cookie、用户浏览器详细信息和操作系统、远程地址等

编辑:用户浏览器详细信息示例

function getUserBrowser() { 
    $u_agent = $_SERVER['HTTP_USER_AGENT']; 
    $bname = 'Unknown';
    $platform = 'Unknown';
    $version = "";

    //First get the platform?
    if (preg_match('/linux/i', $u_agent)) {
        $platform = 'linux';
    }
    elseif (preg_match('/macintosh|mac os x/i', $u_agent)) {
        $platform = 'mac';
    }
    elseif (preg_match('/windows|win32/i', $u_agent)) {
        $platform = 'windows';
    }

    // Next get the name of the useragent yes seperately and for good reason
    if(preg_match('/MSIE/i',$u_agent) && !preg_match('/Opera/i',$u_agent)) { 
        $bname = 'Internet Explorer'; 
        $ub = "MSIE"; 
    } 
    elseif(preg_match('/Firefox/i',$u_agent)) { 
        $bname = 'Mozilla Firefox'; 
        $ub = "Firefox"; 
    } 
    elseif(preg_match('/Chrome/i',$u_agent)) { 
        $bname = 'Google Chrome'; 
        $ub = "Chrome"; 
    } 
    elseif(preg_match('/Safari/i',$u_agent)) { 
        $bname = 'Apple Safari'; 
        $ub = "Safari"; 
    } 
    elseif(preg_match('/Opera/i',$u_agent)) { 
        $bname = 'Opera'; 
        $ub = "Opera"; 
    } 
    elseif(preg_match('/Netscape/i',$u_agent)) { 
        $bname = 'Netscape'; 
        $ub = "Netscape"; 
    } 

    // finally get the correct version number
    $known = array('Version', $ub, 'other');
    $pattern = '#(?<browser>' . join('|', $known) . ')[/ ]+(?<version>[0-9.|a-zA-Z.]*)#';
    if (!preg_match_all($pattern, $u_agent, $matches)) {
        // we have no matching number just continue
    }

    // see how many we have
    $i = count($matches['browser']);
    if ($i != 1) {
        //we will have two since we are not using 'other' argument yet
        //see if version is before or after the name
        if (strripos($u_agent,"Version") < strripos($u_agent,$ub)) {
            $version = $matches['version'][0];
        }
        else {
            $version = $matches['version'][1];
        }
    }
    else {
        $version = $matches['version'][0];
    }

    // check if we have a number
    if ($version == null || $version == "") {
        $version = "?";
    }

    return array(
        'userAgent' => $u_agent,
        'name'      => $bname,
        'version'   => $version,
        'platform'  => $platform,
        'pattern'    => $pattern
    );
}

您可以将此函数用作

$browser = getUserBrowser();

$browser['userAgent'] //'userAgent'
$browser['name'] //'browserName'
$browser['version'] //'version'
$browser['platform'] //'platform'
$browser['pattern'] //'pattern'

对于IP，您可以检查不同的IP类型，例如

'HTTP_CLIENT_IP', 'HTTP_X_FORWARDED_FOR', 'HTTP_X_FORWARDED', 'HTTP_X_CLUSTER_CLIENT_IP', 'HTTP_FORWARDED_FOR', 'HTTP_FORWARDED', 'REMOTE_ADDR'

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