FreeMobile TinyAuth

// ==UserScript==
// @name           FreeMobile TinyAuth
// @namespace      freemobile
// @description    Retour à l'ancien mode d'identification sur FreeMobile.
// @include        https://mobile.free.fr/*
// @updateURL      http://ilatumi.org/126488.meta.js
// @version        1.8
// @run-at         document-start
// ==/UserScript==

var debug = false;
var imgs = [];

var convert_color = function convert_color(image_data){
    for (var x = 0; x < image_data.width; x++){
        for (var y = 0; y < image_data.height; y++){
            var i = x*4+y*4*image_data.width;
            var luma = Math.floor(image_data.data[i] * 299/1000 +
            image_data.data[i+1] * 587/1000 +
            image_data.data[i+2] * 114/1000);

            image_data.data[i] = luma;
            image_data.data[i+1] = luma;
            image_data.data[i+2] = luma;
            image_data.data[i+3] = 255;
            if (image_data.data[i] > 200 || image_data.data[i+3] == 0) {
                image_data.data[i] = 255;
                image_data.data[i+1] = 255;
                image_data.data[i+2] = 255;
                image_data.data[i+3] = 0;
            }
        }
    }
};

var get_number = function(image_data) {
    convert_color(image_data);
    var idx = 34;
    var test = 0;
    for (var i = 0; i < 10; i++) {
        if (image_data.data[(idx+i*10)*4+3] > 0) {
            break;
        }
    }
    if (i == 10) { // 0
        return 0;
    }
    var idx = 6;
    for (var i = 0; i < 15; i++) {
        if (image_data.data[(idx+i*10)*4+3] == 0) {
            break;
        }
    }
    if (i == 15) { // 1 3 4 8 9
        idx = 103; // 4
        if (image_data.data[idx*4+3] > 0 && image_data.data[(idx+2)*4+3] > 0) {
            return 4;
        }
        idx = 34; // 1
        if (image_data.data[idx*4+3] > 0) {
            return 1;
        }
        idx = 102; // 9
        if (image_data.data[idx*4+3] == 0 && image_data.data[(idx+1)*4+3] == 0) {
            return 9;
        }
        idx = 92; // 3
        if (image_data.data[idx*4+3] == 0) {
            return 3;
        }
        return 8;
    }
    if (image_data.data[72*4+3] > 0 && image_data.data[92*4+3] == 0) { // 5
        return 5;
    }
    if (image_data.data[88*4+3] > 0) { // 6
        return 6;
    }
    if (image_data.data[42*4+3] > 0) {
        return 2;
    }
    return 7;
};

var decode = function () {
    var canvas, ctx, imageData;
    var debugCanvas, debugCtx;
    var number, numbers = [-1,-1,-1,-1,-1,-1,-1,-1,-1,-1];
    // start debug
    if (debug) {
        var debugCanvas = document.createElement("canvas");
        debugCanvas.setAttribute("width", 10*10);
        debugCanvas.setAttribute("height", 16);
        document.body.appendChild(debugCanvas);
        var debugCtx = debugCanvas.getContext('2d');
    }
    // end debug
    canvas = document.createElement("canvas");
    canvas.setAttribute("width", 10);
    canvas.setAttribute("height", 16);
    ctx = canvas.getContext('2d');
    for (var i = 0; i < 10; i++) {
        var img = imgs[i];
        ctx.fillStyle = "rgb(255,255,255)";
        ctx.fillRect(0,0,10,16);
        ctx.drawImage(img, 14, 12, 10, 16, 0, 0, 10, 16);
        imageData = ctx.getImageData(0, 0, canvas.width, canvas.height);
        number = get_number(imageData);
        // start debug
        if (debug) {
            console.log(number);
            ctx.putImageData(imageData, 0, 0);
            debugCtx.drawImage(canvas, 0, 0, 10, 16, 10*i, 0, 10, 16);
        }
        // end debug
        if (number < 0 || number > 9 || numbers[number] != -1) {
            throw new Error("Décodage échoué.");
        }
        numbers[number] = i;
    }
    return numbers;
};

var form;
var hiddePanel = function () {
    var els = form.querySelectorAll("*");
    for (var j = 1; j < els.length; j++) {
        if (form == els[j].parentNode || els[j].tagName == "SPAN") {
            els[j].oldDisplay = els[j].style.display;
            els[j].style.display = "none";
        }
    }
    var submit = document.querySelectorAll("form input[type=submit]")[0];
    if (submit) {
        submit.parentNode.style.display = 'block';
    }
};

var displayPanel = function () {
    var els = form.querySelectorAll("*");
    for (var j = 1; j < els.length; j++) {
        if (form == els[j].parentNode || els[j].tagName == "SPAN") {
            els[j].style.display = "block";
        }
    }
};

var start = function () {
    if (!document.getElementById("ident_pos")) {
        return;
    }
    for (var i = 0; i < 10; i++) {
        var img = document.createElement("img");
        img.setAttribute("src", "chiffre.php?pos="+i);
        imgs.push(img);
    }
    var forms = document.getElementsByTagName("form");
    if (forms.length > 0) {
        for (var k = 0; k < forms.length; k++) {
            var submit = forms[k].querySelectorAll("form input[type=submit]")[0];
            if (forms[k].style.display != "none" && submit && submit.style.display != "none") {
                form = forms[k];
            }
        }
    }
    form.setAttribute("autocomplete", "on");
    var identPos = document.getElementById("ident_pos");
    var newInput = document.createElement("input");
    newInput.setAttribute("type", "text");
    newInput.setAttribute("id", "ident_login");
    newInput.setAttribute("autocomplete", "on");
    newInput.setAttribute("name", "ident_login");
    identPos.parentNode.appendChild(newInput);
    hiddePanel();
    form.addEventListener("submit", function (e) {
        // start debug
        //~ e.preventDefault();
        // end debug
        var numbers;
        try {
            numbers = decode();
        } catch(e) {
            displayPanel();
            var span = document.createElement("span");
            span.innerHTML = 'Détection automatique impossible : <a href="http://userscripts.org/scripts/show/126488">surveillez les mises à jour</a>.';
            span.style.fontWeight = "bold";
            document.getElementById("ident_blocd").insertBefore(span,
                document.getElementById("ident_div_ident"));
            newInput.parentNode.removeChild(newInput);
            return;
        }
        var ident = "";
        var n, id = newInput.value.split("");
        for (var j = 0; j < id.length; j++) {
            n = parseInt(id[j]);
            if (n >= 0 && n <= 9) {
                ident += numbers[n];
            }
        }
        document.getElementById("ident_pos").value = ident;
    }, true);
};
document.addEventListener("DOMContentLoaded", start, false);