// script language="javascript" type="text/javascript" 
// (c)2012, Michael W. Gries
// creation date: 2012-05-28
// last modified: 2012-06-22

var DEBUG = false;
var iValue;
var bSecure = false;

// 2012-05-28
function getTamperCode() {
    iValue = document.all.inputCode.value;
    if (iValue == "") {
        document.all.inputCode.value = "0xb2000780";
        iValue = document.all.inputCode.value;
    }
    encodedTamperCode();  // (BBL_tamper_Enc_Src register)
    decodeTamperStatus(); // (BBL_Tamper_Status Rgister)
    activateCodeEntry();
    if (bSecure) getContactCode();
}

// 2012-06-01
function encodedTamperCode() {
    var eTitleText = "earliest tamper event"
    var TC = new Array();
    TC[1] = new Object();
    TC[1][1] = 'Tamper P0'; // DVT2
TC[1][16] = 'Hi Freq Monitor'; // DVT2
TC[1][17] = 'Lo Freq Mnitor'; // DVT2
TC[1][18] = 'Hi Volt Monitor'; // DVT2
TC[1][19] = 'Lo Volt Monitor'; // DVT2
TC[1][20] = 'Hi Temp Monitor'; // DVT2
TC[1][21] = 'Lo Temp Monitor'; // DVT2
TC[1][22] = 'Rate-of-Change Temp'; // DVT2
TC[1][23] = 'Internal Grid Fault'; // DVT2
TC[1][24] = 'Internal Grid Open'; // DVT2
TC[1][25] = 'External Grid Fault'; // DVT2
TC[1][26] = 'External Grid Open'; // DVT2
TC[1][27] = 'Clock Glitch Monitor'; // DVT2
TC[1][31] = 'TST_SWDEV_BOOT'; // DVT2
    var eMask = 0x40; // if bit 7 true than event valid 
    var hMask = 0x1F; // 5 bit coding (BBL_tamper_Enc_Src register)
    var eCode = iValue >> 25; //bit 25-29 used
    eCode = eCode & eMask;
    var hCode = (iValue >> 25) & hMask;
    var sAlertText;
    sAlertText = iValue + " >> 0x" + eCode.toString(16) + " >> 0x" + hCode.toString(16);
    if (eCode != 0) {
        // alert(sAlertText);
        var eTitle = document.createTextNode(eTitleText);
        document.getElementById("Encode").appendChild(eTitle);
        var eValue = document.createTextNode(TC[1][hCode] + " ");
        document.getElementById("EncHex").appendChild(eValue);
    }
}

// 2012-05-29
function decodeTamperStatus() {
    var TC = new Array();
    TC[5000] = new Object();
    TC[5000][1] = 'N0 Fault'; // DVT2
TC[5000][16] = 'N4 Fault'; // DVT2
TC[5000][32] = 'P0 Fault'; // DVT2
TC[5000][64] = 'P1 Fault'; // DVT2
TC[5000][128] = 'P2 Fault'; // DVT2
TC[5000][256] = 'P3 Fault'; // DVT2
TC[5000][512] = 'P4 Fault'; // DVT2
TC[5000][1024] = 'External Mesh Open'; // DVT2
TC[5000][2048] = 'External Mesh Fault'; // DVT2
TC[5000][4096] = 'Internal Mesh Open'; // DVT2
TC[5000][8192] = 'Internal Mesh Fault'; // DVT2
TC[5000][16384] = '32,768Khz clock glitch'; // DVT2
TC[5000][32768] = 'Temp Rate of Change'; // DVT2
TC[5000][65536] = 'Under Temp'; // DVT2
TC[5000][131072] = 'Over Temp'; // DVT2
TC[5000][262144] = 'Under Clock'; // DVT2
TC[5000][524288] = 'Over Clock'; // DVT2
TC[5000][1048576] = 'Battery Under Voltage'; // DVT2
TC[5000][2097152] = 'Battery Over Voltage'; // DVT2
TC[5000][4194304] = 'Tst_swdev Assertation'; // DVT2
TC[5000][8388608] = 'Keys lost'; // DVT2
TC[5000][16777216] = 'Tamper_enc_src not cleared'; // DVT2
    //var sC2 = document.createElement("TD");
    //var sCB = 'checkbox';
    //var parentElement = "Decode";
    //var childElement = "C0";

    var iMask = 1; //start with LSB
    for (var i = 0; i <= 22; i++) {
        var iCode = iValue & iMask;
        var noteC1 = document.createTextNode(".");
        if (iCode != 0) {
            if (DEBUG) {
                var noteC1 = document.createTextNode(iMask + ":" + TC[5000][iMask] + ", ");
            } else {
                //var noteC1 = document.createTextNode(TC[5000][iMask] + ", ");
                var noteC1 = document.createTextNode(TC[5000][iMask] + " ");
                //document.all.iPWD.setAttribute("type", "password", 0);
            } 
        } 
        divElement = "Div"+ i;
        document.getElementById(divElement).appendChild(noteC1);
        //alert(divElement+":"+noteC1);
        //var Knoten = document.getElementsByTagName(divElement)[0].firstChild;
        //verschwunden = document.getElementsByTagName(divElement)[0].removeChild(Knoten);
        //cloneElement = document.getElementById(parentElement).cloneNode(true);
        //document.getElementById(parentElement).firstChild.nodeValue += cloneElement.firstChild.nodeValue;
        //var sCE = document.createElement(childElement);
        //sCE.appendChild(noteC1);
        //document.getElementById(parentElement).appendChild(sCE);
        //parentElement = childElement;
        //sC2.appendChild(noteC1);
        //document.getElementById("Decode").appendChild(sC2);
        iMask = iMask << 1;
    }
    var dTitle = document.createTextNode("decoded Tamper Codes"); // (BBL_Tamper_Status Rgister)
    document.getElementById("Decode").appendChild(dTitle);
    var noteC2 = document.createTextNode(document.all.inputCode.value);
    var aTitle = document.createAttribute("title");
    aTitle.nodeValue = 'decoded value';
    //document.getElementsById("Decode")[1].setAttributeNode(aTitle);
    //document.getElementsById("Decode").title = sCB;
}

// 2012-05-29
function clearTamperCode() {
    //alert(document.referrer);
    location.reload();
}


// 2012-06-03
function getContactCode() {
    var sTCvalue;
    var iIndex;
    var TC = new Array();
    TC[2] = new Object();
    TC[2][1] = 'BH2'; // Bottom Housing 2
TC[2][16] = 'TH1'; // Top Housing 1
TC[2][32] = 'BH1'; // Bottom Housing 1
TC[2][64] = 'LSB'; // L-Shu Box
TC[2][128] = 'SH1, TH2'; // Security 1, Top Housing 2
TC[2][256] = 'TH3'; // Top Housing 3
TC[2][512] = 'TH4'; // Top Housing 4
    for (var i = 0; i <= 9; i++) {
        divElement = "Div"+ i;
        iIndex = Math.pow(2,i);
        sTCvalue = document.getElementById(divElement).firstChild.nodeValue; 
        //alert(sTCvalue);
        if(sTCvalue != ".") {
            var sCCtext = " (" + TC[2][iIndex] + ") ";
            var sCC = document.createTextNode(sCCtext);
            document.getElementById(divElement).appendChild(sCC);
        }
    }
    var sLegend = "Legend: THx-Top Housing, BHx-Bottom Housing, SH1-Security, LSH-L Shu Box, KBx-Keyboard";
    //var sLegendNode = document.createTextNode(sLegend);
    //document.getElementById("Legend").appendChild(sLegendNode);
    document.all.Legend.innerHTML = sLegend;
}


// 2012-06-03
function secureStatus() {
    //alert(this.value);
    var sSecureValue = document.all.iPWD.value;
    //alert(sSecureValue);
    if (sSecureValue == "0815") {
        bSecure = true;
        getContactCode();
        bSecure = false;
        //alert(sSecureValue);
        document.all.iPWD.value = "";
    }
}

// 2012-06-23
function activateCodeEntry() {
    //alert(document.all.iPWD.disabled);
    document.all.iPWD.disabled = "";
}