/**
* ChilliLibrary.js
* V2.0
*
* This Javascript library can be used to create HTML/JS browser
* based smart clients (BBSM) for the CoovaChilli access controller
* Coova Chilli rev 81 or higher is required
*
* This library creates four global objects :
*
* - chilliController Expose session/client state and
* connect()/disconnect() methods the to BBSM.
*
* - chilliJSON INTERNAL (should not be called from the BBSM).
* Issues a command to the chilli daemon by adding a new <SCRIPT>
* tag to the HTML DOM (this hack enables cross server requests).
*
* - chilliClock Can be used by BBSMs to display a count down.
* Will sync with chilliController for smooth UI display (not yet implemented)
*
* - chilliLibrary Expose API and library versions
*
* For more information http://coova.org/wiki/index.php/CoovaChilli/JSON
*
* TODO :
* - Fine tune level of debug messages
* - Define error code when invoking onError
* - Retry mechanism after a JSON request fails
* - Delay clock tick when there is already an ongoing request
* - Use a true JSON parser to validate what we received
* - Use idleTime and idleTimeout to re-schedule autofresh after
* a likely idle termination by chilli
* - check that the library can be compiled as a Flash swf library
* and used from Flash BBSMs with the same API.
*
* Copyright (C) Y.Deltroo 2007
* Distributed under the BSD License
*
* This file also contains third party code :
* - MD5, distributed under the BSD license
* http://pajhome.org.uk/crypt/md5
*
*/
var chilliLibrary = { revision:'85' , apiVersion:'2.0' } ;
/**
* Global chilliController object
*
* CONFIGUARION PROPERTIES
* -----------------------
* ident (String)
* Hex encoded string (used for client side CHAP-Password calculations)
*
* interval (Number)
* Poll the gateway every interval, in seconds
*
* host (String)
* IP address of the controller (String)
*
* port (Number)
* UAM port to direct request to on the gateway
*
* ssl (Boolean)
* Shall we use HTTP or HTTPS to communicate with the chilli controller
*
* uamService : String
* !!! EXPERIMENTAL FEATURE !!!
* URL to external uamService script (used for external MD5 calculation when portal/chilli trust is required)
* This remote script runs on a SSL enable web server, and knows UAM SECRET.
* The chilliController javascript object will send the password over SSL (and challenge for CHAP)
* UAM SERVICE should reply with a JSON response containing
* - CHAP logon : CHAP-Password X0Red with UAM SECRET
* - PAP logon : Password XORed with UAM SECRET
*
* For more information http://coova.org/wiki/index.php/CoovaChilli/JSON
*
*/
var chilliController = { interval:30 , host:"192.168.182.1" , port:3990 , ident:'00' , ssl:false , uamService: '' };
/* Define clientState numerical code constants */
chilliController.stateCodes = { UNKNOWN:-1 , NOT_AUTH:0 , AUTH:1 , AUTH_PENDING:2 , AUTH_SPLASH:3 } ;
/* Initializing session and accounting members, objet properties */
chilliController.session = {} ;
chilliController.accounting = {} ;
chilliController.redir = {} ;
chilliController.location = { name: '' } ;
chilliController.challenge = '' ;
chilliController.message = '' ;
chilliController.clientState = chilliController.stateCodes.UNKNOWN ;
chilliController.command = '' ;
chilliController.autorefreshTimer = 0 ;
/* This method returns the root URL for commands */
chilliController.urlRoot = function () {
var protocol = ( chilliController.ssl ) ? "https" : "http" ;
var urlRoot = protocol + "://" + chilliController.host + ":" + chilliController.port.toString() + "/json/" ;
return urlRoot;
};
/* Default event handlers */
chilliController.onUpdate = function ( cmd ) {
log('>> Default onUpdate handler. <<\n>> You should write your own. <<\n>> cmd = ' + cmd + ' <<' );
};
chilliController.onError = function ( str ) {
log ( '>> Default Error Handler<<\n>> You should write your own <<\n>> ' + str + ' <<' );
};
chilliController.formatTime = function ( t , zeroReturn ) {
if ( typeof(t) == 'undefined' ) {
return "Not available";
}
t = parseInt ( t , 10 ) ;
if ( (typeof (zeroReturn) !='undefined') && ( t === 0 ) ) {
return zeroReturn;
}
var h = Math.floor( t/3600 ) ;
var m = Math.floor( (t - 3600*h)/60 ) ;
var s = t % 60 ;
var s_str = s.toString();
if (s < 10 ) { s_str = '0' + s_str; }
var m_str = m.toString();
if (m < 10 ) { m_str= '0' + m_str; }
var h_str = h.toString();
if (h < 10 ) { h_str= '0' + h_str; }
if ( t < 60 ) { return s_str + 's' ; }
else if ( t < 3600 ) { return m_str + 'm' + s_str + 's' ; }
else { return h_str + 'h' + m_str + 'm' + s_str + 's'; }
};
chilliController.formatBytes = function ( b , zeroReturn ) {
if ( typeof(b) == 'undefined' ) {
b = 0;
} else {
b = parseInt ( b , 10 ) ;
}
if ( (typeof (zeroReturn) !='undefined') && ( b === 0 ) ) {
return zeroReturn;
}
var kb = Math.round(b / 10) / 100;
if (kb < 1) return b + ' Bytes';
var mb = Math.round(kb / 10) / 100;
if (mb < 1) return kb + ' Kilobytes';
var gb = Math.round(mb / 10) / 100;
if (gb < 1) return mb + ' Megabytes';
return gb + ' Gigabytes';
};
/**
* Global chilliController object
*
* PUBLIC METHODS
* --------------
* logon ( username, password ) :
* Attempt a CHAP logon with username/password
* issues a /logon command to chilli daemon
*
* logoff () :
* Disconnect the current user by issuing a
* /logoff command to the chilli daemon
*
* refresh () :
* Issues a /status command to chilli daemon to refresh
* the local chilliController object state/session data
*
*/
chilliController.logon = function ( username , password ) {
if ( typeof(username) !== 'string') {
chilliController.onError( 1 , "username missing (or incorrect type)" ) ;
}
if ( typeof(password) !== 'string') {
chilliController.onError( 2 , "password missing (or incorrect type)" ) ;
}
log ( 'chilliController.logon( "' + username + '" , "' + password + ' " )' );
chilliController.temp = { 'username': username , 'password': password };
chilliController.command = 'logon';
log ('chilliController.logon: asking for a new challenge ' );
chilliJSON.onError = chilliController.onError ;
chilliJSON.onJSONReady = chilliController.logonStep2 ;
chilliController.clientState = chilliController.AUTH_PENDING ;
chilliJSON.get( chilliController.urlRoot() + 'status' ) ;
};
/**
* Second part of the logon process invoked after
* the just requested challenge has been received
*/
chilliController.logonStep2 = function ( resp ) {
log('Entering logonStep 2');
if ( typeof (resp.challenge) != 'string' ) {
log('logonStep2: cannot find a challenge. Aborting.');
return chilliController.onError('Cannot get challenge');
}
if ( resp.clientSate === chilliController.stateCodes.AUTH ) {
log('logonStep2: Already connected. Aborting.');
return chilliController.onError('Already connected.');
}
var challenge = resp.challenge;
var username = chilliController.temp.username ;
var password = chilliController.temp.password ;
log ('chilliController.logonStep2: Got challenge = ' + challenge );
if ( chilliController.uamService ) { /* MD5 CHAP will be calculated by uamService */
log ('chilliController.logonStep2: Logon using uamService (external MD5 CHAP)');
// Build command URL
var url = chilliController.uamService + '?username=' + escape(username) +'&password=' + escape(password) +'&challenge=' + challenge ;
if (chilliController.queryObj && chilliController.queryObj['userurl'] ) {
url += '&userurl='+chilliController.queryObj['userurl'] ;
}
// Make uamService request
chilliJSON.onError = chilliController.onError ;
chilliJSON.onJSONReady = chilliController.logonStep3 ;
chilliController.clientState = chilliController.AUTH_PENDING ;
chilliJSON.get( url ) ;
}
else {
/* TODO: Should check if challenge has expired and possibly get a new one */
/* OR always call status first to get a fresh challenge */
/* Calculate MD5 CHAP at the client side */
var myMD5 = new ChilliMD5();
var chappassword = myMD5.chap ( chilliController.ident , password , challenge );
log ( 'chilliController.logonStep2: Calculating CHAP-Password = ' + chappassword );
/* Prepare chilliJSON for logon request */
chilliJSON.onError = chilliController.onError ;
chilliJSON.onJSONReady = chilliController.processReply ;
chilliController.clientState = chilliController.stateCodes.AUTH_PENDING ;
/* Build /logon command URL */
var logonUrl = chilliController.urlRoot() + 'logon?username=' + escape(username) + '&response=' + chappassword;
if (chilliController.queryObj && chilliController.queryObj['userurl'] ) {
logonUrl += '&userurl='+chilliController.queryObj['userurl'] ;
}
chilliJSON.get ( logonUrl ) ;
}
};
/**
* Third part of the logon process invoked after
* getting a uamService response
*/
chilliController.logonStep3 = function ( resp ) {
log('Entering logonStep 3');
var username = chilliController.temp.username ;
if ( typeof (resp.response) == 'string' ) {
chilliJSON.onError = chilliController.onError ;
chilliJSON.onJSONReady = chilliController.processReply ;
chilliController.clientState = chilliController.stateCodes.AUTH_PENDING ;
/* Build /logon command URL */
var logonUrl = chilliController.urlRoot() + 'logon?username=' + escape(username) + '&response=' + resp.response;
if (chilliController.queryObj && chilliController.queryObj['userurl'] ) {
logonUrl += '&userurl='+chilliController.queryObj['userurl'] ;
}
chilliJSON.get ( logonUrl ) ;
}
}
chilliController.refresh = function ( ) {
if ( chilliController.autorefreshTimer ) {
chilliController.command = 'autorefresh' ;
}
else {
chilliController.command = 'refresh' ;
}
chilliJSON.onError = chilliController.onError ;
chilliJSON.onJSONReady = chilliController.processReply ;
chilliJSON.get( chilliController.urlRoot() + 'status' ) ;
};
chilliController.logoff = function () {
chilliController.command = 'logoff' ;
chilliJSON.onError = chilliController.onError ;
chilliJSON.onJSONReady = chilliController.processReply ;
chilliJSON.get( chilliController.urlRoot() + 'logoff' );
};
/* *
*
* This functions does some check/type processing on the JSON resp
* and updates the corresponding chilliController members
*
*/
chilliController.processReply = function ( resp ) {
if ( typeof (resp.message) == 'string' ) {
/* The following trick will replace HTML entities with the corresponding
* character. This will not work in Flash (no innerHTML)
*/
var fakediv = document.createElement('div');
fakediv.innerHTML = resp.message ;
chilliController.message = fakediv.innerHTML ;
}
if ( typeof (resp.challenge) == 'string' ) {
chilliController.challenge = resp.challenge ;
}
if ( typeof ( resp.location ) == 'object' ) {
chilliController.location = resp.location ;
}
if ( typeof ( resp.accounting ) == 'object' ) {
chilliController.accounting = resp.accounting ;
}
if ( (typeof ( resp.redir ) == 'object') ) {
chilliController.redir = resp.redir ;
}
/* Update the session member only the first time after AUTH */
if ( (typeof ( resp.session ) == 'object') &&
( chilliController.session==null || (
( chilliController.clientState !== chilliController.stateCodes.AUTH ) &&
( resp.clientState === chilliController.stateCodes.AUTH )))) {
chilliController.session = resp.session ;
if ( resp.session.startTime ) {
chilliController.session.startTime = new Date();
chilliController.session.startTime.setTime(resp.session.startTime);
}
}
/* Update clientState */
if ( ( resp.clientState === chilliController.stateCodes.NOT_AUTH ) ||
( resp.clientState === chilliController.stateCodes.AUTH ) ||
( resp.clientState === chilliController.stateCodes.AUTH_SPLASH ) ||
( resp.clientState === chilliController.stateCodes.AUTH_PENDING ) ) {
chilliController.clientState = resp.clientState ;
}
else {
chilliController.onError("Unknown clientState found in JSON reply");
}
/* Launch or stop the autorefresh timer if required */
if ( chilliController.clientState === chilliController.stateCodes.AUTH ) {
if ( !chilliController.autorefreshTimer ) {
chilliController.autorefreshTimer = setInterval ('chilliController.refresh()' , 1000*chilliController.interval);
}
}
else if ( chilliController.clientState === chilliController.stateCodes.NOT_AUTH ) {
clearInterval ( chilliController.autorefreshTimer ) ;
chilliController.autorefreshTimer = 0 ;
}
/* Lastly... call the event handler */
log ('chilliController.processReply: Calling onUpdate. clienState = ' + chilliController.clientState);
chilliController.onUpdate( chilliController.command );
};
/**
* chilliJSON object
*
* This private objet implements the cross domain hack
* If no answer is received before timeout, then an error is raised.
*
*/
var chilliJSON = { timeout:25000 , timer:0 , node:0 , timestamp:0 };
chilliJSON.expired = function () {
if ( chilliJSON.node.text ) {
log ('chilliJSON: reply content \n' + chilliJSON.node.text );
}
else {
log ('chilliJSON: request timed out (or reply is not valid JS)');
}
clearInterval ( chilliJSON.timer ) ;
chilliJSON.timer = 0 ;
/* remove the <SCRIPT> tag node that we have created */
if ( typeof (chilliJSON.node) !== 'number' ) {
document.getElementsByTagName('head')[0].removeChild ( chilliJSON.node );
}
chilliJSON.node = 0;
/* TODO: Implement some kind of retry mechanism here ... */
chilliJSON.onError('JSON request timed out (or reply is not valid)');
};
chilliJSON.reply = function ( raw ) {
clearInterval ( chilliJSON.timer ) ;
chilliJSON.timer = 0 ;
var now = new Date() ;
var end = now.getTime() ;
if ( chilliJSON.timestamp ) {
log ( 'chilliJSON: JSON reply received in ' + ( end - chilliJSON.timestamp ) + ' ms\n' + dumpObject(raw) );
}
if ( typeof (chilliJSON.node) !== 'number' ) {
document.getElementsByTagName('head')[0].removeChild ( chilliJSON.node );
}
chilliJSON.node = 0;
/* TODO: We should parse raw JSON as an extra security measure */
chilliJSON.onJSONReady( raw ) ;
} ;
chilliJSON.get = function ( gUrl ) {
if ( typeof(gUrl) == "string" ) {
chilliJSON.url = gUrl ;
}
else {
log ( "chilliJSON:error:Incorrect url passed to chilliJSON.get():" + gUrl );
chilliJSON.onError ( "Incorrect url passed to chilliJSON.get() " );
return ;
}
if ( chilliJSON.timer ) {
log('logon: There is already a request running. Return without launching a new request.');
return ;
}
var scriptElement = document.createElement('script');
scriptElement.type = 'text/javascript';
var c ;
if ( this.url.indexOf('?') === -1 ) {
c = '?' ;
}
else {
c = '&' ;
}
scriptElement.src = chilliJSON.url + c + 'callback=chilliJSON.reply' ;
scriptElement.src += '&'+Math.random(); // prevent caching in Safari
/* Adding the node that will trigger the HTTP request to the DOM tree */
chilliJSON.node = document.getElementsByTagName('head')[0].appendChild(scriptElement);
/* Using interval instead of timeout to support Flash 5,6,7 */
chilliJSON.timer = setInterval ( 'chilliJSON.expired()' , chilliJSON.timeout ) ;
var now = new Date();
chilliJSON.timestamp = now.getTime() ;
log ('chilliJSON: getting ' + chilliJSON.url + ' . Waiting for reply ...');
}; // end chilliJSON.get = function ( url )
/**
* chilliClock object
*
* Can be used by BBSMs to display a count down.
*
* Will sync with chilliController and modulate the delay to call onTick
* This will avoid ugly sequence of short updates in the IO
* (not yet implemented)
*
*/
var chilliClock = { isStarted : 0 };
chilliClock.onTick = function () {
log ("You should define your own onTick() handler on this clock object. Clock value = " + this.value );
};
chilliClock.increment = function () {
chilliClock.value = chilliClock.value + 1 ;
chilliClock.onTick( chilliClock.value ) ;
};
chilliClock.resync = function ( newval ) {
clearInterval ( chilliClock.isStarted ) ;
chilliClock.value = parseInt( newval , 10 ) ;
chilliClock.isStarted = setInterval ( 'chilliClock.increment()' , 1000 );
};
chilliClock.start = function ( newval ) {
if ( typeof (newval) !== 'Number' ) {
chilliClock.resync ( 0 ) ;
}
else {
chilliClock.resync ( newval ) ;
}
};
chilliClock.stop = function () {
clearInterval ( chilliClock.isStarted ) ;
chilliClock.isStarted = 0 ;
};
function getel(e) {
if (document.getElementById) {
return document.getElementById(e);
} else if (document.all){
return document.all[e];
}
}
function log( msg , messageLevel ) {
if (!chilliController.debug) return;
if ( typeof(trace)=="function") {
// ActionScript trace
trace ( msg );
}
else if ( typeof(console)=="object") {
// FireBug console
console.debug ( msg );
}
if ( getel('debugarea') ) {
var e = getel('debugarea') ;
e.value = e.value + '\n' + msg;
e.scrollTop = e.scrollHeight - e.clientHeight;
}
}
/* Transform an object to a text representation */
function dumpObject ( obj ) {
var str = '' ;
for (var key in obj ) {
str = str + " " + key + " = " + obj[key] + "\n" ;
if ( typeof ( obj[key] ) == "object" ) {
for ( var key2 in obj[key] ) {
str = str + " " + key2 + " = " + obj[key][key2] + "\n" ;
}
}
}
return str;
}
/*
* A JavaScript implementation of the RSA Data Security, Inc. MD5 Message
* Digest Algorithm, as defined in RFC 1321.
* Version 2.1 Copyright (C) Paul Johnston 1999 - 2002.
* Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
* Distributed under the BSD License
* See http://pajhome.org.uk/crypt/md5 for more info.
*
* added by Y.DELTROO
* - new functions: chap(), hex2binl() and str2hex()
* - modifications to comply with the jslint test, http://www.jslint.com/
*
* Copyright (c) 2007
* Distributed under the BSD License
*
*/
function ChilliMD5() {
var hexcase = 0; /* hex output format. 0 - lowercase; 1 - uppercase */
var b64pad = ""; /* base-64 pad character. "=" for strict RFC compliance */
var chrsz = 8; /* bits per input character. 8 - ASCII; 16 - Unicode */
this.hex_md5 = function (s){
return binl2hex(core_md5(str2binl(s), s.length * chrsz));
};
this.chap = function ( hex_ident , str_password , hex_chal ) {
// Convert everything to hex encoded strings
var hex_password = str2hex ( str_password );
// concatenate hex encoded strings
var hex = hex_ident + hex_password + hex_chal;
// Convert concatenated hex encoded string to its binary representation
var bin = hex2binl ( hex ) ;
// Calculate MD5 on binary representation
var md5 = core_md5( bin , hex.length * 4 ) ;
return binl2hex( md5 );
};
function core_md5(x, len) {
x[len >> 5] |= 0x80 << ((len) % 32);
x[(((len + 64) >>> 9) << 4) + 14] = len;
var a = 1732584193;
var b = -271733879;
var c = -1732584194;
var d = 271733878;
for(var i = 0; i < x.length; i += 16) {
var olda = a;
var oldb = b;
var oldc = c;
var oldd = d;
a = md5_ff(a, b, c, d, x[i+ 0], 7 , -680876936);
d = md5_ff(d, a, b, c, x[i+ 1], 12, -389564586);
c = md5_ff(c, d, a, b, x[i+ 2], 17, 606105819);
b = md5_ff(b, c, d, a, x[i+ 3], 22, -1044525330);
a = md5_ff(a, b, c, d, x[i+ 4], 7 , -176418897);
d = md5_ff(d, a, b, c, x[i+ 5], 12, 1200080426);
c = md5_ff(c, d, a, b, x[i+ 6], 17, -1473231341);
b = md5_ff(b, c, d, a, x[i+ 7], 22, -45705983);
a = md5_ff(a, b, c, d, x[i+ 8], 7 , 1770035416);
d = md5_ff(d, a, b, c, x[i+ 9], 12, -1958414417);
c = md5_ff(c, d, a, b, x[i+10], 17, -42063);
b = md5_ff(b, c, d, a, x[i+11], 22, -1990404162);
a = md5_ff(a, b, c, d, x[i+12], 7 , 1804603682);
d = md5_ff(d, a, b, c, x[i+13], 12, -40341101);
c = md5_ff(c, d, a, b, x[i+14], 17, -1502002290);
b = md5_ff(b, c, d, a, x[i+15], 22, 1236535329);
a = md5_gg(a, b, c, d, x[i+ 1], 5 , -165796510);
d = md5_gg(d, a, b, c, x[i+ 6], 9 , -1069501632);
c = md5_gg(c, d, a, b, x[i+11], 14, 643717713);
b = md5_gg(b, c, d, a, x[i+ 0], 20, -373897302);
a = md5_gg(a, b, c, d, x[i+ 5], 5 , -701558691);
d = md5_gg(d, a, b, c, x[i+10], 9 , 38016083);
c = md5_gg(c, d, a, b, x[i+15], 14, -660478335);
b = md5_gg(b, c, d, a, x[i+ 4], 20, -405537848);
a = md5_gg(a, b, c, d, x[i+ 9], 5 , 568446438);
d = md5_gg(d, a, b, c, x[i+14], 9 , -1019803690);
c = md5_gg(c, d, a, b, x[i+ 3], 14, -187363961);
b = md5_gg(b, c, d, a, x[i+ 8], 20, 1163531501);
a = md5_gg(a, b, c, d, x[i+13], 5 , -1444681467);
d = md5_gg(d, a, b, c, x[i+ 2], 9 , -51403784);
c = md5_gg(c, d, a, b, x[i+ 7], 14, 1735328473);
b = md5_gg(b, c, d, a, x[i+12], 20, -1926607734);
a = md5_hh(a, b, c, d, x[i+ 5], 4 , -378558);
d = md5_hh(d, a, b, c, x[i+ 8], 11, -2022574463);
c = md5_hh(c, d, a, b, x[i+11], 16, 1839030562);
b = md5_hh(b, c, d, a, x[i+14], 23, -35309556);
a = md5_hh(a, b, c, d, x[i+ 1], 4 , -1530992060);
d = md5_hh(d, a, b, c, x[i+ 4], 11, 1272893353);
c = md5_hh(c, d, a, b, x[i+ 7], 16, -155497632);
b = md5_hh(b, c, d, a, x[i+10], 23, -1094730640);
a = md5_hh(a, b, c, d, x[i+13], 4 , 681279174);
d = md5_hh(d, a, b, c, x[i+ 0], 11, -358537222);
c = md5_hh(c, d, a, b, x[i+ 3], 16, -722521979);
b = md5_hh(b, c, d, a, x[i+ 6], 23, 76029189);
a = md5_hh(a, b, c, d, x[i+ 9], 4 , -640364487);
d = md5_hh(d, a, b, c, x[i+12], 11, -421815835);
c = md5_hh(c, d, a, b, x[i+15], 16, 530742520);
b = md5_hh(b, c, d, a, x[i+ 2], 23, -995338651);
a = md5_ii(a, b, c, d, x[i+ 0], 6 , -198630844);
d = md5_ii(d, a, b, c, x[i+ 7], 10, 1126891415);
c = md5_ii(c, d, a, b, x[i+14], 15, -1416354905);
b = md5_ii(b, c, d, a, x[i+ 5], 21, -57434055);
a = md5_ii(a, b, c, d, x[i+12], 6 , 1700485571);
d = md5_ii(d, a, b, c, x[i+ 3], 10, -1894986606);
c = md5_ii(c, d, a, b, x[i+10], 15, -1051523);
b = md5_ii(b, c, d, a, x[i+ 1], 21, -2054922799);
a = md5_ii(a, b, c, d, x[i+ 8], 6 , 1873313359);
d = md5_ii(d, a, b, c, x[i+15], 10, -30611744);
c = md5_ii(c, d, a, b, x[i+ 6], 15, -1560198380);
b = md5_ii(b, c, d, a, x[i+13], 21, 1309151649);
a = md5_ii(a, b, c, d, x[i+ 4], 6 , -145523070);
d = md5_ii(d, a, b, c, x[i+11], 10, -1120210379);
c = md5_ii(c, d, a, b, x[i+ 2], 15, 718787259);
b = md5_ii(b, c, d, a, x[i+ 9], 21, -343485551);
a = safe_add(a, olda);
b = safe_add(b, oldb);
c = safe_add(c, oldc);
d = safe_add(d, oldd);
}
return [ a, b, c, d ];
}
function md5_cmn(q, a, b, x, s, t) {
return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s),b);
}
function md5_ff(a, b, c, d, x, s, t) {
return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t);
}
function md5_gg(a, b, c, d, x, s, t) {
return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t);
}
function md5_hh(a, b, c, d, x, s, t) {
return md5_cmn(b ^ c ^ d, a, b, x, s, t);
}
function md5_ii(a, b, c, d, x, s, t) {
return md5_cmn(c ^ (b | (~d)), a, b, x, s, t);
}
function safe_add(x, y) {
var lsw = (x & 0xFFFF) + (y & 0xFFFF);
var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
return (msw << 16) | (lsw & 0xFFFF);
}
function bit_rol(num, cnt) {
return (num << cnt) | (num >>> (32 - cnt));
}
function str2binl(str) {
var bin = [] ;
var mask = (1 << chrsz) - 1;
for (var i = 0; i < str.length * chrsz; i += chrsz) {
bin[i>>5] |= (str.charCodeAt(i / chrsz) & mask) << (i%32);
}
return bin;
}
function binl2hex(binarray) {
var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
var str = "";
for (var i = 0; i < binarray.length * 4; i++) {
str += hex_tab.charAt((binarray[i>>2] >> ((i%4)*8+4)) & 0xF) +
hex_tab.charAt((binarray[i>>2] >> ((i%4)*8 )) & 0xF);
}
return str;
}
function str2hex ( str ) {
var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
var hex = '';
var val ;
for ( var i=0 ; i* TODO: adapt this if chrz=16 */
val = str.charCodeAt(i);
hex = hex + hex_tab.charAt( val/16 );
hex = hex + hex_tab.charAt( val%16 );
}
return hex;
}
function hex2binl ( hex ) {
/* Clean-up hex encoded input string */
hex = hex.toLowerCase() ;
hex = hex.replace( / /g , "");
var bin =[] ;
/* Transfrom to array of integers (binary representation) */
for ( i=0 ; i < hex.length*4 ; i=i+8 ) {
octet = parseInt( hex.substr( i/4 , 2) , 16) ;
bin[i>>5] |= ( octet & 255 ) << (i%32);
}
return bin;
}
} // end of ChilliMD5 constructor
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