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fanzeyi/lastfm.api.js

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lastfm.api.js
/*
*
* Copyright (c) 2008-2010, Felix Bruns <felixbruns@web.de>
*
*/
function utf16to8(str) {
var out, i, len, c;
out = "";
len = str.length;
for(i = 0; i < len; i++) {
c = str.charCodeAt(i);
if ((c >= 0x0001) && (c <= 0x007F)) {
out += str.charAt(i);
} else if (c > 0x07FF) {
out += String.fromCharCode(0xE0 | ((c >> 12) & 0x0F));
out += String.fromCharCode(0x80 | ((c >> 6) & 0x3F));
out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F));
} else {
out += String.fromCharCode(0xC0 | ((c >> 6) & 0x1F));
out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F));
}
}
return out;
}
function LastFM(options){
/* Set default values for required options. */
var apiKey = options.apiKey || '';
var apiSecret = options.apiSecret || '';
var apiUrl = options.apiUrl || 'http://ws.audioscrobbler.com/2.0/';
var cache = options.cache || undefined;
/* Set API key. */
this.setApiKey = function(_apiKey){
apiKey = _apiKey;
};
/* Set API key. */
this.setApiSecret = function(_apiSecret){
apiSecret = _apiSecret;
};
/* Set API URL. */
this.setApiUrl = function(_apiUrl){
apiUrl = _apiUrl;
};
/* Set cache. */
this.setCache = function(_cache){
cache = _cache;
};
/* Set the JSONP callback identifier counter. This is used to ensure the callbacks are unique */
var jsonpCounter = 0;
/* Internal call (POST, GET). */
var internalCall = function(params, callbacks, requestMethod){
/* Cross-domain POST request (doesn't return any data, always successful). */
if(requestMethod == 'POST'){
/* Create iframe element to post data. */
var html = document.getElementsByTagName('html')[0];
var iframe = document.createElement('iframe');
var doc;
/* Set iframe attributes. */
iframe.width = 1;
iframe.height = 1;
iframe.style.border = 'none';
iframe.onerror = "lastfm.error()";
iframe.onload = function(){
/* Remove iframe element. */
//html.removeChild(iframe);
/* Call user callback. */
if(typeof(callbacks.success) != 'undefined'){
callbacks.success();
}
};
/* Fix compatibility with some browsers. */
iframe.setAttribute("onerror", "lastfm.error()");
/* Append iframe. */
html.appendChild(iframe);
/* Get iframe document. */
if(typeof(iframe.contentWindow) != 'undefined'){
doc = iframe.contentWindow.document;
}
else if(typeof(iframe.contentDocument.document) != 'undefined'){
doc = iframe.contentDocument.document.document;
}
else{
doc = iframe.contentDocument.document;
}
/* Open iframe document and write a form. */
doc.open();
doc.clear();
doc.write('<form method="post" action="' + apiUrl + '" id="form">');
/* Write POST parameters as input fields. */
for(var param in params){
doc.write('<input type="text" name="' + param + '" value="' + params[param] + '">');
}
/* Write automatic form submission code. */
doc.write('</form>');
doc.write('<script type="application/x-javascript">');
doc.write('document.getElementById("form").submit();');
doc.write('</script>');
/* Close iframe document. */
doc.close();
}
/* Cross-domain GET request (JSONP). */
else{
/* Get JSONP callback name. */
var jsonp = 'jsonp' + new Date().getTime() + jsonpCounter;
/* Update the unique JSONP callback counter */
jsonpCounter += 1;
/* Calculate cache hash. */
var hash = auth.getApiSignature(params);
/* Check cache. */
if(typeof(cache) != 'undefined' && cache.contains(hash) && !cache.isExpired(hash)){
if(typeof(callbacks.success) != 'undefined'){
callbacks.success(cache.load(hash));
}
return;
}
/* Set callback name and response format. */
params.callback = jsonp;
params.format = 'json';
/* Create JSONP callback function. */
window[jsonp] = function(data){
/* Is a cache available?. */
if(typeof(cache) != 'undefined'){
var expiration = cache.getExpirationTime(params);
if(expiration > 0){
cache.store(hash, data, expiration);
}
}
/* Call user callback. */
if(typeof(data.error) != 'undefined'){
if(typeof(callbacks.error) != 'undefined'){
callbacks.error(data.error, data.message);
}
}
else if(typeof(callbacks.success) != 'undefined'){
callbacks.success(data);
}
else{
if(typeof(callbacks.error) != 'undefined'){
callbacks.error(11, "Service Offline - This service is temporarily offline. Try again later.");
}
}
/* Garbage collect. */
window[jsonp] = undefined;
try{
delete window[jsonp];
}
catch(e){
window[jsonp] = null;
}
/* Remove script element. */
if(head){
head.removeChild(script);
}
};
/* Create script element to load JSON data. */
var head = document.getElementsByTagName("head")[0];
var script = document.createElement("script");
/* Build parameter string. */
var array = [];
for(var param in params){
array.push(encodeURIComponent(param) + "=" + encodeURIComponent(params[param]));
}
/* Set script source. */
script.src = apiUrl + '?' + array.join('&').replace(/%20/g, '+');
/* Let script detect errors. */
script.onerror = "lastfm.error(true)";
/* Partially fix compatibility with some browsers. */
script.setAttribute("onerror", "lastfm.error(true)");
/* Append script element. */
head.appendChild(script);
}
};
/* Normal method call. */
var call = function(method, params, callbacks, requestMethod){
/* Set default values. */
params = params || {};
callbacks = callbacks || {};
requestMethod = requestMethod || 'GET';
/* Add parameters. */
params.method = method;
params.api_key = apiKey;
/* Call method. */
internalCall(params, callbacks, requestMethod);
};
/* Signed method call. */
var signedCall = function(method, params, session, callbacks, requestMethod){
/* Set default values. */
params = params || {};
callbacks = callbacks || {};
requestMethod = requestMethod || 'GET';
/* Add parameters. */
params.method = method;
params.api_key = apiKey;
/* Add session key. */
if(session && typeof(session.key) != 'undefined'){
params.sk = session.key;
}
/* Get API signature. */
params.api_sig = auth.getApiSignature(params);
/* Call method. */
internalCall(params, callbacks, requestMethod);
};
/* Album methods. */
this.album = {
addTags : function(params, session, callbacks){
/* Build comma separated tags string. */
if(typeof(params.tags) == 'object'){
params.tags = params.tags.join(',');
}
signedCall('album.addTags', params, session, callbacks, 'POST');
},
getBuylinks : function(params, callbacks){
call('album.getBuylinks', params, callbacks);
},
getInfo : function(params, callbacks){
call('album.getInfo', params, callbacks);
},
getTags : function(params, session, callbacks){
signedCall('album.getTags', params, session, callbacks);
},
removeTag : function(params, session, callbacks){
signedCall('album.removeTag', params, session, callbacks, 'POST');
},
search : function(params, callbacks){
call('album.search', params, callbacks);
},
share : function(params, session, callbacks){
/* Build comma separated recipients string. */
if(typeof(params.recipient) == 'object'){
params.recipient = params.recipient.join(',');
}
signedCall('album.share', params, callbacks);
}
};
/* Artist methods. */
this.artist = {
addTags : function(params, session, callbacks){
/* Build comma separated tags string. */
if(typeof(params.tags) == 'object'){
params.tags = params.tags.join(',');
}
signedCall('artist.addTags', params, session, callbacks, 'POST');
},
getCorrection : function(params, callbacks){
call('artist.getCorrection', params, callbacks);
},
getEvents : function(params, callbacks){
call('artist.getEvents', params, callbacks);
},
getImages : function(params, callbacks){
call('artist.getImages', params, callbacks);
},
getInfo : function(params, callbacks){
call('artist.getInfo', params, callbacks);
},
getPastEvents : function(params, callbacks){
call('artist.getPastEvents', params, callbacks);
},
getPodcast : function(params, callbacks){
call('artist.getPodcast', params, callbacks);
},
getShouts : function(params, callbacks){
call('artist.getShouts', params, callbacks);
},
getSimilar : function(params, callbacks){
call('artist.getSimilar', params, callbacks);
},
getTags : function(params, session, callbacks){
signedCall('artist.getTags', params, session, callbacks);
},
getTopAlbums : function(params, callbacks){
call('artist.getTopAlbums', params, callbacks);
},
getTopFans : function(params, callbacks){
call('artist.getTopFans', params, callbacks);
},
getTopTags : function(params, callbacks){
call('artist.getTopTags', params, callbacks);
},
getTopTracks : function(params, callbacks){
call('artist.getTopTracks', params, callbacks);
},
removeTag : function(params, session, callbacks){
signedCall('artist.removeTag', params, session, callbacks, 'POST');
},
search : function(params, callbacks){
call('artist.search', params, callbacks);
},
share : function(params, session, callbacks){
/* Build comma separated recipients string. */
if(typeof(params.recipient) == 'object'){
params.recipient = params.recipient.join(',');
}
signedCall('artist.share', params, session, callbacks, 'POST');
},
shout : function(params, session, callbacks){
signedCall('artist.shout', params, session, callbacks, 'POST');
}
};
/* Auth methods. */
this.auth = {
getMobileSession : function(params, callbacks){
/* Set new params object with authToken. */
params = {
username : params.username,
authToken : md5(params.username + md5(params.password))
};
signedCall('auth.getMobileSession', params, null, callbacks);
},
getSession : function(params, callbacks){
signedCall('auth.getSession', params, null, callbacks);
},
getToken : function(callbacks){
signedCall('auth.getToken', null, null, callbacks);
},
/* Deprecated. Security hole was fixed. */
getWebSession : function(callbacks){
/* Save API URL and set new one (needs to be done due to a cookie!). */
var previuousApiUrl = apiUrl;
apiUrl = 'http://ext.last.fm/2.0/';
signedCall('auth.getWebSession', null, null, callbacks);
/* Restore API URL. */
apiUrl = previuousApiUrl;
}
};
/* Chart methods. */
this.chart = {
getHypedArtists : function(params, session, callbacks){
call('chart.getHypedArtists', params, callbacks);
},
getHypedTracks : function(params, session, callbacks){
call('chart.getHypedTracks', params, callbacks);
},
getLovedTracks : function(params, session, callbacks){
call('chart.getLovedTracks', params, callbacks);
},
getTopArtists : function(params, session, callbacks){
call('chart.getTopArtists', params, callbacks);
},
getTopTags : function(params, session, callbacks){
call('chart.getTopTags', params, callbacks);
},
getTopTracks : function(params, session, callbacks){
call('chart.getTopTracks', params, callbacks);
}
};
/* Event methods. */
this.event = {
attend : function(params, session, callbacks){
signedCall('event.attend', params, session, callbacks, 'POST');
},
getAttendees : function(params, session, callbacks){
call('event.getAttendees', params, callbacks);
},
getInfo : function(params, callbacks){
call('event.getInfo', params, callbacks);
},
getShouts : function(params, callbacks){
call('event.getShouts', params, callbacks);
},
share : function(params, session, callbacks){
/* Build comma separated recipients string. */
if(typeof(params.recipient) == 'object'){
params.recipient = params.recipient.join(',');
}
signedCall('event.share', params, session, callbacks, 'POST');
},
shout : function(params, session, callbacks){
signedCall('event.shout', params, session, callbacks, 'POST');
}
};
/* Geo methods. */
this.geo = {
getEvents : function(params, callbacks){
call('geo.getEvents', params, callbacks);
},
getMetroArtistChart : function(params, callbacks){
call('geo.getMetroArtistChart', params, callbacks);
},
getMetroHypeArtistChart : function(params, callbacks){
call('geo.getMetroHypeArtistChart', params, callbacks);
},
getMetroHypeTrackChart : function(params, callbacks){
call('geo.getMetroHypeTrackChart', params, callbacks);
},
getMetroTrackChart : function(params, callbacks){
call('geo.getMetroTrackChart', params, callbacks);
},
getMetroUniqueArtistChart : function(params, callbacks){
call('geo.getMetroUniqueArtistChart', params, callbacks);
},
getMetroUniqueTrackChart : function(params, callbacks){
call('geo.getMetroUniqueTrackChart', params, callbacks);
},
getMetroWeeklyChartlist : function(params, callbacks){
call('geo.getMetroWeeklyChartlist', params, callbacks);
},
getMetros : function(params, callbacks){
call('geo.getMetros', params, callbacks);
},
getTopArtists : function(params, callbacks){
call('geo.getTopArtists', params, callbacks);
},
getTopTracks : function(params, callbacks){
call('geo.getTopTracks', params, callbacks);
}
};
/* Group methods. */
this.group = {
getHype : function(params, callbacks){
call('group.getHype', params, callbacks);
},
getMembers : function(params, callbacks){
call('group.getMembers', params, callbacks);
},
getWeeklyAlbumChart : function(params, callbacks){
call('group.getWeeklyAlbumChart', params, callbacks);
},
getWeeklyArtistChart : function(params, callbacks){
call('group.getWeeklyArtistChart', params, callbacks);
},
getWeeklyChartList : function(params, callbacks){
call('group.getWeeklyChartList', params, callbacks);
},
getWeeklyTrackChart : function(params, callbacks){
call('group.getWeeklyTrackChart', params, callbacks);
}
};
/* Library methods. */
this.library = {
addAlbum : function(params, session, callbacks){
signedCall('library.addAlbum', params, session, callbacks, 'POST');
},
addArtist : function(params, session, callbacks){
signedCall('library.addArtist', params, session, callbacks, 'POST');
},
addTrack : function(params, session, callbacks){
signedCall('library.addTrack', params, session, callbacks, 'POST');
},
getAlbums : function(params, callbacks){
call('library.getAlbums', params, callbacks);
},
getArtists : function(params, callbacks){
call('library.getArtists', params, callbacks);
},
getTracks : function(params, callbacks){
call('library.getTracks', params, callbacks);
}
};
/* Playlist methods. */
this.playlist = {
addTrack : function(params, session, callbacks){
signedCall('playlist.addTrack', params, session, callbacks, 'POST');
},
create : function(params, session, callbacks){
signedCall('playlist.create', params, session, callbacks, 'POST');
},
fetch : function(params, callbacks){
call('playlist.fetch', params, callbacks);
}
};
/* Radio methods. */
this.radio = {
getPlaylist : function(params, session, callbacks){
signedCall('radio.getPlaylist', params, session, callbacks);
},
search : function(params, session, callbacks){
signedCall('radio.search', params, session, callbacks);
},
tune : function(params, session, callbacks){
signedCall('radio.tune', params, session, callbacks);
}
};
/* Tag methods. */
this.tag = {
getInfo : function(params, callbacks){
call('tag.getInfo', params, callbacks);
},
getSimilar : function(params, callbacks){
call('tag.getSimilar', params, callbacks);
},
getTopAlbums : function(params, callbacks){
call('tag.getTopAlbums', params, callbacks);
},
getTopArtists : function(params, callbacks){
call('tag.getTopArtists', params, callbacks);
},
getTopTags : function(callbacks){
call('tag.getTopTags', null, callbacks);
},
getTopTracks : function(params, callbacks){
call('tag.getTopTracks', params, callbacks);
},
getWeeklyArtistChart : function(params, callbacks){
call('tag.getWeeklyArtistChart', params, callbacks);
},
getWeeklyChartList : function(params, callbacks){
call('tag.getWeeklyChartList', params, callbacks);
},
search : function(params, callbacks){
call('tag.search', params, callbacks);
}
};
/* Tasteometer method. */
this.tasteometer = {
compare : function(params, callbacks){
call('tasteometer.compare', params, callbacks);
},
compareGroup : function(params, callbacks){
call('tasteometer.compareGroup', params, callbacks);
}
};
/* Track methods. */
this.track = {
addTags : function(params, session, callbacks){
signedCall('track.addTags', params, session, callbacks, 'POST');
},
ban : function(params, session, callbacks){
signedCall('track.ban', params, session, callbacks, 'POST');
},
getBuylinks : function(params, callbacks){
call('track.getBuylinks', params, callbacks);
},
getCorrection : function(params, callbacks){
call('track.getCorrection', params, callbacks);
},
getFingerprintMetadata : function(params, callbacks){
call('track.getFingerprintMetadata', params, callbacks);
},
getInfo : function(params, callbacks){
call('track.getInfo', params, callbacks);
},
getShouts : function(params, callbacks){
call('track.getShouts', params, callbacks);
},
getSimilar : function(params, callbacks){
call('track.getSimilar', params, callbacks);
},
getTags : function(params, session, callbacks){
signedCall('track.getTags', params, session, callbacks);
},
getTopFans : function(params, callbacks){
call('track.getTopFans', params, callbacks);
},
getTopTags : function(params, callbacks){
call('track.getTopTags', params, callbacks);
},
love : function(params, session, callbacks){
signedCall('track.love', params, session, callbacks, 'POST');
},
removeTag : function(params, session, callbacks){
signedCall('track.removeTag', params, session, callbacks, 'POST');
},
scrobble : function(params, session, callbacks){
/* Flatten an array of multiple tracks into an object with "array notation". */
if(params.constructor.toString().indexOf("Array") != -1){
var p = {};
for(i in params){
for(j in params[i]){
p[j + '[' + i + ']'] = params[i][j];
}
}
params = p;
}
signedCall('track.scrobble', params, session, callbacks, 'POST');
},
search : function(params, callbacks){
call('track.search', params, callbacks);
},
share : function(params, session, callbacks){
/* Build comma separated recipients string. */
if(typeof(params.recipient) == 'object'){
params.recipient = params.recipient.join(',');
}
signedCall('track.share', params, session, callbacks, 'POST');
},
unban : function(params, session, callbacks){
signedCall('track.unban', params, session, callbacks, 'POST');
},
unlove : function(params, session, callbacks){
signedCall('track.unlove', params, session, callbacks, 'POST');
},
updateNowPlaying : function(params, session, callbacks){
signedCall('track.updateNowPlaying', params, session, callbacks, 'POST');
}
};
/* User methods. */
this.user = {
getArtistTracks : function(params, callbacks){
call('user.getArtistTracks', params, callbacks);
},
getBannedTracks : function(params, callbacks){
call('user.getBannedTracks', params, callbacks);
},
getEvents : function(params, callbacks){
call('user.getEvents', params, callbacks);
},
getFriends : function(params, callbacks){
call('user.getFriends', params, callbacks);
},
getInfo : function(params, callbacks){
call('user.getInfo', params, callbacks);
},
getLovedTracks : function(params, callbacks){
call('user.getLovedTracks', params, callbacks);
},
getNeighbours : function(params, callbacks){
call('user.getNeighbours', params, callbacks);
},
getNewReleases : function(params, callbacks){
call('user.getNewReleases', params, callbacks);
},
getPastEvents : function(params, callbacks){
call('user.getPastEvents', params, callbacks);
},
getPersonalTracks : function(params, callbacks){
call('user.getPersonalTracks', params, callbacks);
},
getPlaylists : function(params, callbacks){
call('user.getPlaylists', params, callbacks);
},
getRecentStations : function(params, session, callbacks){
signedCall('user.getRecentStations', params, session, callbacks);
},
getRecentTracks : function(params, callbacks){
call('user.getRecentTracks', params, callbacks);
},
getRecommendedArtists : function(params, session, callbacks){
signedCall('user.getRecommendedArtists', params, session, callbacks);
},
getRecommendedEvents : function(params, session, callbacks){
signedCall('user.getRecommendedEvents', params, session, callbacks);
},
getShouts : function(params, callbacks){
call('user.getShouts', params, callbacks);
},
getTopAlbums : function(params, callbacks){
call('user.getTopAlbums', params, callbacks);
},
getTopArtists : function(params, callbacks){
call('user.getTopArtists', params, callbacks);
},
getTopTags : function(params, callbacks){
call('user.getTopTags', params, callbacks);
},
getTopTracks : function(params, callbacks){
call('user.getTopTracks', params, callbacks);
},
getWeeklyAlbumChart : function(params, callbacks){
call('user.getWeeklyAlbumChart', params, callbacks);
},
getWeeklyArtistChart : function(params, callbacks){
call('user.getWeeklyArtistChart', params, callbacks);
},
getWeeklyChartList : function(params, callbacks){
call('user.getWeeklyChartList', params, callbacks);
},
getWeeklyTrackChart : function(params, callbacks){
call('user.getWeeklyTrackChart', params, callbacks);
},
shout : function(params, session, callbacks){
signedCall('user.shout', params, session, callbacks, 'POST');
}
};
/* Venue methods. */
this.venue = {
getEvents : function(params, callbacks){
call('venue.getEvents', params, callbacks);
},
getPastEvents : function(params, callbacks){
call('venue.getPastEvents', params, callbacks);
},
search : function(params, callbacks){
call('venue.search', params, callbacks);
}
};
/* Private auth methods. */
var auth = {
getApiSignature : function(params){
var keys = [];
var string = '';
for(var key in params){
keys.push(key);
}
keys.sort();
for(var index in keys){
var key = keys[index];
string += key + params[key];
}
string += apiSecret;
/* Needs lastfm.api.md5.js. */
return md5(utf16to8(string));
}
};
/* Detect Last.fm API problems. */
this.error = function(value){
/* Create your own callback here. */
}
}
Raw
lastfm.api.md5.js
/*
* 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.
*/
/*
* Configurable variables. You may need to tweak these to be compatible with
* the server-side, but the defaults work in most cases.
*/
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 */
/*
* These are the functions you'll usually want to call
* They take string arguments and return either hex or base-64 encoded strings
*/
function md5(s){ return hex_md5(s); }
function hex_md5(s){ return binl2hex(core_md5(str2binl(s), s.length * chrsz));}
function b64_md5(s){ return binl2b64(core_md5(str2binl(s), s.length * chrsz));}
function str_md5(s){ return binl2str(core_md5(str2binl(s), s.length * chrsz));}
function hex_hmac_md5(key, data) { return binl2hex(core_hmac_md5(key, data)); }
function b64_hmac_md5(key, data) { return binl2b64(core_hmac_md5(key, data)); }
function str_hmac_md5(key, data) { return binl2str(core_hmac_md5(key, data)); }
/*
* Perform a simple self-test to see if the VM is working
*/
function md5_vm_test()
{
return hex_md5("abc") == "900150983cd24fb0d6963f7d28e17f72";
}
/*
* Calculate the MD5 of an array of little-endian words, and a bit length
*/
function core_md5(x, len)
{
/* append padding */
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 Array(a, b, c, d);
}
/*
* These functions implement the four basic operations the algorithm uses.
*/
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);
}
/*
* Calculate the HMAC-MD5, of a key and some data
*/
function core_hmac_md5(key, data)
{
var bkey = str2binl(key);
if(bkey.length > 16) bkey = core_md5(bkey, key.length * chrsz);
var ipad = Array(16), opad = Array(16);
for(var i = 0; i < 16; i++)
{
ipad[i] = bkey[i] ^ 0x36363636;
opad[i] = bkey[i] ^ 0x5C5C5C5C;
}
var hash = core_md5(ipad.concat(str2binl(data)), 512 + data.length * chrsz);
return core_md5(opad.concat(hash), 512 + 128);
}
/*
* Add integers, wrapping at 2^32. This uses 16-bit operations internally
* to work around bugs in some JS interpreters.
*/
function safe_add(x, y)
{
var lsw = (x & 0xFFFF) + (y & 0xFFFF);
var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
return (msw << 16) | (lsw & 0xFFFF);
}
/*
* Bitwise rotate a 32-bit number to the left.
*/
function bit_rol(num, cnt)
{
return (num << cnt) | (num >>> (32 - cnt));
}
/*
* Convert a string to an array of little-endian words
* If chrsz is ASCII, characters >255 have their hi-byte silently ignored.
*/
function str2binl(str)
{
var bin = Array();
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;
}
/*
* Convert an array of little-endian words to a string
*/
function binl2str(bin)
{
var str = "";
var mask = (1 << chrsz) - 1;
for(var i = 0; i < bin.length * 32; i += chrsz)
str += String.fromCharCode((bin[i>>5] >>> (i % 32)) & mask);
return str;
}
/*
* Convert an array of little-endian words to a hex string.
*/
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;
}
/*
* Convert an array of little-endian words to a base-64 string
*/
function binl2b64(binarray)
{
var tab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
var str = "";
for(var i = 0; i < binarray.length * 4; i += 3)
{
var triplet = (((binarray[i >> 2] >> 8 * ( i %4)) & 0xFF) << 16)
| (((binarray[i+1 >> 2] >> 8 * ((i+1)%4)) & 0xFF) << 8 )
| ((binarray[i+2 >> 2] >> 8 * ((i+2)%4)) & 0xFF);
for(var j = 0; j < 4; j++)
{
if(i * 8 + j * 6 > binarray.length * 32) str += b64pad;
else str += tab.charAt((triplet >> 6*(3-j)) & 0x3F);
}
}
return str;
}
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