Problem with jquery-file-upload and csrf-magic

[webbird]

I am having a problem combining csrf-magic and jquery-file-upload by blueimp. When trying to send the files (i.e. send the upload form), the csrf-magic.js prepends the data with it's token. Result is an invalid post:

__csrf_magic=sid:d0a151fd235a4f1302269149a01afe55a45db3de,1432143876&[object FormData]

The server side script now gets nothing as the query string is invalid.

Any ideas?

[webbird]

Seems I was able to fix this by extending the process method like so:

CsrfMagic.process = function(base) {
    if(typeof base == 'object') {
        base[csrfMagicName] = csrfMagicToken;
        return base;
    }
    var prepend = csrfMagicName + '=' + csrfMagicToken;
    if (base) return prepend + '&' + base;
    return prepend;
}

Will have to test this a little more.

[samhaldia]

hi, Will you be please be precise about it. Sameer

On 5/21/15, Bianka Martinovic [email protected] wrote:

Seems I was able to fix this by extending the process method like so:

CsrfMagic.process = function(base) { if(typeof base == 'object') { base[csrfMagicName] = csrfMagicToken; return base; } var prepend = csrfMagicName + '=' + csrfMagicToken; if (base) return prepend + '&' + base; return prepend; }

Will have to test this a little more.

---

Reply to this email directly or view it on GitHub: https://github.com/ezyang/csrf-magic/issues/6#issuecomment-104253341

[webbird]

Uhm, what do you mean?

[samhaldia]

i meant will you tell me the steps to reproduce for my php based website. Actually on not finding any solution i left but again i would like to work it out

On 5/21/15, Bianka Martinovic [email protected] wrote:

Uhm, what do you mean?

---

Reply to this email directly or view it on GitHub: https://github.com/ezyang/csrf-magic/issues/6#issuecomment-104352139

[webbird]

In my case, the jQuery plugin sends an object instead of a string. When csrf-magic prepends the form data with the token, result is

__csrf_magic=sid:d0a151fd235a4f1302269149a01afe55a45db3de,1432143876&[object FormData]

The part before the & is the token string, the part after would be an object, but now it's cast to a string. The result is an invalid query string, so no data is posted to the PHP script on the server side.

To find this, I used Firebug to see what is sent to the server (console window).

After adding the patch shown above all works fine for me.

[GreeKatrina]

I also ran into this issue and used the same fix, but I had to add it in the CsrfMagic.prototype.send() method as well. You could call the process() method, in order to avoid duplicate code.

send: function(data) {
    if (!this.csrf_isPost) return this.csrf_send(data);
    prepend = csrfMagicName + '=' + csrfMagicToken + '&';
    if (this.csrf_purportedLength === undefined) {
        this.csrf_setRequestHeader("Content-length", this.csrf_purportedLength + prepend.length);
        delete this.csrf_purportedLength;
    }
    delete this.csrf_isPost;

    // Fix to work with FormData objects.
    if (typeof data == 'object') {
        data[csrfMagicName] = csrfMagicToken;
        return this.csrf_send(data);
    }

    return this.csrf_send(prepend + data);
},