Question

我正在使用basicAuth对特定地址的POST进行身份验证。

在客户端，我正在使用以下形式的命令：

$.ajax({
        type: "POST",
        accepts: "text/plain",
        url: "http://localhost:3000/somewhere",
        data: JSON.stringify(something),
        contentType: "application/json; charset=UTF-8", 
        dataType: "json",
        success: function(data) {
            window.alert("Received back: '" + data + "'");
        },
        username: theUsername,
        password: "a password"
    });

这样工作正常，因为存储在用户名中的用户名传递了我在节点上的身份验证机制。在用户通过身份验证后，我可以打印一个console.log语句，看看谁实际已经过身份验证（我目前没有验证密码）。但随后开始POST请求的实际处理。但是，在那时我如何计算出原始请求中使用的用户名和密码？我试着查看请求的标题，但我没有看到任何内容。

Answer 1

当您收到基本身份验证请求时，您应该能够读取req.headers.authorization中的“授权”标头。您必须提取base64编码的凭据然后解码它们。据推测，在Express中您使用req.header("authorization")或req.get("authorization")

有关独立示例，请查看我在下面复制的https://gist.github.com/charlesdaniel/1686663以供将来参考

var http = require('http');

var server = http.createServer(function(req, res) {
        // console.log(req);   // debug dump the request

        // If they pass in a basic auth credential it'll be in a header called "Authorization" (note NodeJS lowercases the names of headers in its request object)

        var auth = req.headers['authorization'];  // auth is in base64(username:password)  so we need to decode the base64
        console.log("Authorization Header is: ", auth);

        if(!auth) {     // No Authorization header was passed in so it's the first time the browser hit us

                // Sending a 401 will require authentication, we need to send the 'WWW-Authenticate' to tell them the sort of authentication to use
                // Basic auth is quite literally the easiest and least secure, it simply gives back  base64( username + ":" + password ) from the browser
                res.statusCode = 401;
                res.setHeader('WWW-Authenticate', 'Basic realm="Secure Area"');

                res.end('<html><body>Need some creds son</body></html>');
        }

        else if(auth) {    // The Authorization was passed in so now we validate it

                var tmp = auth.split(' ');   // Split on a space, the original auth looks like  "Basic Y2hhcmxlczoxMjM0NQ==" and we need the 2nd part

                var buf = new Buffer(tmp[1], 'base64'); // create a buffer and tell it the data coming in is base64
                var plain_auth = buf.toString();        // read it back out as a string

                console.log("Decoded Authorization ", plain_auth);

                // At this point plain_auth = "username:password"

                var creds = plain_auth.split(':');      // split on a ':'
                var username = creds[0];
                var password = creds[1];

                if((username == 'hack') && (password == 'thegibson')) {   // Is the username/password correct?

                        res.statusCode = 200;  // OK
                        res.end('<html><body>Congratulations you just hax0rd teh Gibson!</body></html>');
                }
                else {
                        res.statusCode = 401; // Force them to retry authentication
                        res.setHeader('WWW-Authenticate', 'Basic realm="Secure Area"');

                        // res.statusCode = 403;   // or alternatively just reject them altogether with a 403 Forbidden

                        res.end('<html><body>You shall not pass</body></html>');
                }
        }
});


server.listen(5000, function() { console.log("Server Listening on http://localhost:5000/"); });

在处理POST请求时确定谁在Node上使用basicAuth进行了身份验证

1 个答案: