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// ///////////////////////////////////////////////////////////////////////////////// // JavaScript Magstripe (track 1, track2) data parser object // // Mar-22-2005 Modified by Wayne Walrath, // Acme Technologies http://www.acmetech.com // based on demo source code from www.skipjack.com // // USAGE: // var p = new SwipeParserObj(); // p.dump(); -- returns parsed field values and meta info. // -- or -- // get individual field names (see member variables at top of object) // // if( p.hasTrack1 ){ // p.surname; // p.firstname; // p.account; // p.exp_month + "/" + p.exp_year; // } /////////////////////////////////////////////////////////////////////////////////// function SwipeParserObj(strParse) { /////////////////////////////////////////////////////////////// ///////////////////// member variables //////////////////////// this.input_trackdata_str = strParse; this.account_name = null; this.surname = null; this.firstname = null; this.account = null; this.exp_month = null; this.exp_year = null; this.track1 = null; this.track2 = null; this.hasTrack1 = false; this.hasTrack2 = false; /////////////////////////// end member fields ///////////////// sTrackData = this.input_trackdata_str; //--- Get the track data //-- Example: Track 1 & 2 Data //-- %B1234123412341234^CardUser/John^030510100000019301000000877000000?;1234123412341234=0305101193010877? //-- Key off of the presence of "^" and "=" //-- Example: Track 1 Data Only //-- B1234123412341234^CardUser/John^030510100000019301000000877000000? //-- Key off of the presence of "^" but not "=" //-- Example: Track 2 Data Only //-- 1234123412341234=0305101193010877? //-- Key off of the presence of "=" but not "^" if ( strParse != '' ) { // alert(strParse); //--- Determine the presence of special characters nHasTrack1 = strParse.indexOf("^"); nHasTrack2 = strParse.indexOf("="); //--- Set boolean values based off of character presence this.hasTrack1 = bHasTrack1 = false; this.hasTrack2 = bHasTrack2 = false; if (nHasTrack1 > 0) { this.hasTrack1 = bHasTrack1 = true; } if (nHasTrack2 > 0) { this.hasTrack2 = bHasTrack2 = true; } //--- Test messages // alert('nHasTrack1: ' + nHasTrack1 + ' nHasTrack2: ' + nHasTrack2); // alert('bHasTrack1: ' + bHasTrack1 + ' bHasTrack2: ' + bHasTrack2); //--- Initialize bTrack1_2 = false; bTrack1 = false; bTrack2 = false; //--- Determine tracks present if (( bHasTrack1) && ( bHasTrack2)) { bTrack1_2 = true; } if (( bHasTrack1) && (!bHasTrack2)) { bTrack1 = true; } if ((!bHasTrack1) && ( bHasTrack2)) { bTrack2 = true; } //--- Test messages // alert('bTrack1_2: ' + bTrack1_2 + ' bTrack1: ' + bTrack1 + ' bTrack2: ' + bTrack2); //--- Initialize alert message on error bShowAlert = false; //----------------------------------------------------------------------------- //--- Track 1 & 2 cards //--- Ex: B1234123412341234^CardUser/John^030510100000019301000000877000000?;1234123412341234=0305101193010877? //----------------------------------------------------------------------------- if (bTrack1_2) { // alert('Track 1 & 2 swipe'); strCutUpSwipe = '' + strParse + ' '; arrayStrSwipe = new Array(4); arrayStrSwipe = strCutUpSwipe.split("^"); var sAccountNumber, sName, sShipToName, sMonth, sYear; if ( arrayStrSwipe.length > 2 ) { this.account = stripAlpha( arrayStrSwipe[0].substring(1,arrayStrSwipe[0].length) ); this.account_name = arrayStrSwipe[1]; this.exp_month = arrayStrSwipe[2].substring(2,4); this.exp_year = '20' + arrayStrSwipe[2].substring(0,2); //--- Different card swipe readers include or exclude the % in the front of the track data - when it's there, there are //--- problems with parsing on the part of credit cards processor - so strip it off if ( sTrackData.substring(0,1) == '%' ) { sTrackData = sTrackData.substring(1,sTrackData.length); } var track2sentinel = sTrackData.indexOf(";"); if( track2sentinel != -1 ){ this.track1 = sTrackData.substring(0, track2sentinel); this.track2 = sTrackData.substring(track2sentinel); } //--- parse name field into first/last names var nameDelim = this.account_name.indexOf("/"); if( nameDelim != -1 ){ this.surname = this.account_name.substring(0, nameDelim); this.firstname = this.account_name.substring(nameDelim+1); } } else //--- for "if ( arrayStrSwipe.length > 2 )" { bShowAlert = true; //--- Error -- show alert message } } //----------------------------------------------------------------------------- //--- Track 1 only cards //--- Ex: B1234123412341234^CardUser/John^030510100000019301000000877000000? //----------------------------------------------------------------------------- if (bTrack1) { // alert('Track 1 swipe'); strCutUpSwipe = '' + strParse + ' '; arrayStrSwipe = new Array(4); arrayStrSwipe = strCutUpSwipe.split("^"); var sAccountNumber, sName, sShipToName, sMonth, sYear; if ( arrayStrSwipe.length > 2 ) { this.account = sAccountNumber = stripAlpha( arrayStrSwipe[0].substring( 1,arrayStrSwipe[0].length) ); this.account_name = sName = arrayStrSwipe[1]; this.exp_month = sMonth = arrayStrSwipe[2].substring(2,4); this.exp_year = sYear = '20' + arrayStrSwipe[2].substring(0,2); //--- Different card swipe readers include or exclude the % in //--- the front of the track data - when it's there, there are //--- problems with parsing on the part of credit cards processor - so strip it off if ( sTrackData.substring(0,1) == '%' ) { this.track1 = sTrackData = sTrackData.substring(1,sTrackData.length); } //--- Add track 2 data to the string for processing reasons // if (sTrackData.substring(sTrackData.length-1,1) != '?') //--- Add a ? if not present // { sTrackData = sTrackData + '?'; } this.track2 = ';' + sAccountNumber + '=' + sYear.substring(2,4) + sMonth + '111111111111?'; sTrackData = sTrackData + this.track2; //--- parse name field into first/last names var nameDelim = this.account_name.indexOf("/"); if( nameDelim != -1 ){ this.surname = this.account_name.substring(0, nameDelim); this.firstname = this.account_name.substring(nameDelim+1); } } else //--- for "if ( arrayStrSwipe.length > 2 )" { bShowAlert = true; //--- Error -- show alert message } } //----------------------------------------------------------------------------- //--- Track 2 only cards //--- Ex: 1234123412341234=0305101193010877? //----------------------------------------------------------------------------- if (bTrack2) { // alert('Track 2 swipe'); nSeperator = strParse.indexOf("="); sCardNumber = strParse.substring(1,nSeperator); sYear = strParse.substr(nSeperator+1,2); sMonth = strParse.substr(nSeperator+3,2); // alert(sCardNumber + ' -- ' + sMonth + '/' + sYear); this.account = sAccountNumber = stripAlpha(sCardNumber); this.exp_month = sMonth = sMonth; this.exp_year = sYear = '20' + sYear; //--- Different card swipe readers include or exclude the % in the front of the track data - when it's there, //--- there are problems with parsing on the part of credit cards processor - so strip it off if ( sTrackData.substring(0,1) == '%' ) { sTrackData = sTrackData.substring(1,sTrackData.length); } } //----------------------------------------------------------------------------- //--- No Track Match //----------------------------------------------------------------------------- if (((!bTrack1_2) && (!bTrack1) && (!bTrack2)) || (bShowAlert)) { //alert('Difficulty Reading Card Information.\n\nPlease Swipe Card Again.'); } // alert('Track Data: ' + document.formFinal.trackdata.value); //document.formFinal.trackdata.value = replaceChars(document.formFinal.trackdata.value,';',''); //document.formFinal.trackdata.value = replaceChars(document.formFinal.trackdata.value,'?',''); // alert('Track Data: ' + document.formFinal.trackdata.value); } //--- end "if ( strParse != '' )" this.dump = function(){ var s = ""; var sep = "\r"; // line separator s += "Name: " + this.account_name + sep; s += "Surname: " + this.surname + sep; s += "first name: " + this.firstname + sep; s += "account: " + this.account + sep; s += "exp_month: " + this.exp_month + sep; s += "exp_year: " + this.exp_year + sep; s += "has track1: " + this.hasTrack1 + sep; s += "has track2: " + this.hasTrack2 + sep; s += "TRACK 1: " + this.track1 + sep; s += "TRACK 2: " + this.track2 + sep; s += "Raw Input Str: " + this.input_trackdata_str + sep; return s; } function stripAlpha(sInput){ if( sInput == null ) return ''; return sInput.replace(/[^0-9]/g, ''); } }