My work in progress dropbox lib

function buildmessage(params){

    var boundary = 'sAxIqse3tPlHqUIUI9ofVlHvtdt3tpaG'

//
//  var body = [
//              "Content-Type: multipart/form-data;boundary="+boundary ,
//              "Content-Length:" +params.content.length,
//              "--"+boundary,
//              "Content-Disposition: form-data, file=" + params.file,
//              "--"+boundary,
//              "Content-Type: application/octet-stream",
//              params.content
//
//               ].join('\r\n');
//

    body =    '\
    --6ac6f72b1bcb4fe49a1162138b4c83a5  \
    Content-Disposition: form-data; name="file"; filename="test.txt"  \
    Content-Type: text/plain        \
    test file                       \
                                      \
    --6ac6f72b1bcb4fe49a1162138b4c83a5-- \
    '

   

    return body


    //return body





}


var _ajaxSendFileContents = function(message, file, content ) {
		var _xhr = new XMLHttpRequest();




//		var params = {};
//
//		//for (i in message.parameters) {
//		//	params[message.parameters[i][0]] = message.parameters[i][1];
//		//}
//
//
//    params.file = file
////    params.content = content ;
////    params.extra='';
////    params = $.extend(params,message.parameters)
//
//
//
//
//
		_xhr.onreadystatechange = function() {
			//console.log(this);
			if(_xhr.status == 200 && _xhr.readyState == 4){

			}
		}

//    var parameterString= '' ;
       _xhr.open("POST", message.action, true);
//       count = 0
//       for ( i  in  params) {
//         if (i.indexOf('oauth') != -1 ){
//        parameterString += (count > 0 ? ",":"")
//
//         i + "="
//
//        encodeURI(params[i]);
//
//       } count +=1 ;
//       }
//
//  //  parameterString = "OAuth realm='''" + parameterString
//

     _xhr.setRequestHeader('Content-Type','multipart/form-data; boundary=6ac6f72b1bcb4fe49a1162138b4c83a5')
//     _xhr.setRequestHeader('Authorization','OAuth file="test.txt",oauth_consumer_key="g82gi74es4x7s6m",oauth_nonce="2992320",oauth_signature_method="HMAC-SHA1",oauth_timestamp="1298007098",oauth_token="fkrwme74smqyltg",oauth_version="1.0"')
//     _xhr.setRequestHeader("Connection", "close");





//  //_xhr.setRequestHeader("Content-Type", "text/plain;charset=UTF-8");
//  // _xhr.setRequestHeader("Authorization", parameterString);
//
//
//  //  console.log(parameterString);
//
//       // set the necessary request headers
//
////    parameterString[parameterString - 1] = ''
////    message.action+='?'+parameterString;
////    message.action=message.action;
////    console.log(message.action) ;
//
    params={}
    body = buildmessage(params)
   
    console.log('testbefore')
    console.log(body)
    _xhr.sendAsBinary(body);
    console.log('testafter');
	};

function escapePath(p) {
  return encodeURIComponent(p)
    .replace(/%2F/g, '/')
    .replace(/\)/g, '%29')
    .replace(/\(/g, '%28');
}

var dropbox = {
  setup: function() {
    this._consumerKey = '53rzw7i7ip4bsgl';
    this._consumerSecret = 'wwsshz3w95utgtg';
    this._requestCounter = $.now();
  },

  authenticate: function(email, password, callback) {
    var that = this;

    this._request("/token", {
      sendAuth: false,

      success: function(data) {
        console.log("authentication response", data);
        that._accessToken = data.token;
        that._accessTokenSecret = data.secret;

        if (callback) {
          callback();
        }
      },
      error: function() {
        console.error("authentication error", arguments);
      }
    }, {
      email: email,
      password: password
    });
  },

  getInfo: function(callback) {
    this._request("/account/info", {
      success: function(data) {
        console.log("account info", data);
     	if (callback) {
          callback(data);
        }
      },
      error: function() {
        console.log("account info error", arguments);
      }
    });
  },

  getFiles: function(path,callback) {
    this._request("/files/dropbox/"+path, {
      success: function(data) {
       console.log("account info", data);
     	if (callback) {
          callback(data);
        }
      },
      error: function() {
        console.log("account info error", arguments);
      }
    });
  },



   putFiles: function(file,callback) {
     //$.ajaxSetup({
     //   data: {file:file}
     //   });

    this._request("/files/dropbox", {method:"POST",file:file.fileName,extra:file,subdomain:'api-content'}, {
      success: function() {
       console.log("post info" );
     	if (callback) {
          callback();
        }
      },
      error: function() {
        alert("failure");
      }
    });
  },




  getMetadata: function(path,callback) {
  this._request("/metadata/dropbox/"+path,{
    file_limit:10000,
    list:true,
    success: function(data) {
     console.log("account info", data);
       if (callback) {
        callback(data);
      }
    },
    error: function() {
      console.log("Meta data error", arguments);
    }
  });
},







  _request: function(path, params, data) {
    var requestId = "dropboxjsonp" + (this._requestCounter++);
    params = $.extend({}, {
      subdomain: "api", // some methods need api-content.dropbox.com
      apiVersion: "0",
      sendAuth: true,
      method: "GET",
      success: $.noop,
      error: $.noop
    }, params || {});



    if (params.sendAuth && !this._accessToken) {
      throw "Authenticated method called before authenticating";
    }

    var url = "https://" + params.subdomain + ".dropbox.com/" + params.apiVersion + escapePath(path);
   
    var message = {
      action: url,
      method: params.method,
      parameters: {
        oauth_consumer_key: this._consumerKey,
        oauth_signature_method: "HMAC-SHA1",
        callback: requestId
      }
    };

    $.extend(message.parameters, data);

    if (params.sendAuth) {
      message.parameters.oauth_token = this._accessToken;
    }

    var oauthBits = {
      consumerSecret: this._consumerSecret
    };

    if (params.sendAuth) {
      oauthBits.tokenSecret = this._accessTokenSecret;
    }

    OAuth.setTimestampAndNonce(message);
    OAuth.SignatureMethod.sign(message, oauthBits);


    if (params.method == "POST"){ 
      
            test = true ;
        _ajaxSendFileContents(message, params.extra.file);

    }

  /*
   escaping path after oauth signature has been made
   */

      var url = "https://" + params.subdomain + ".dropbox.com/" + params.apiVersion + escapePath(path);
  
   if (typeof test=="undefined"){
    $.ajax({
      dataType: "jsonp",
      method: params.method,
      url: url,
      data: OAuth.getParameterMap(message.parameters),
      jsonpCallback: requestId,
      success: params.success ,
      error: params.error
    });
   }
  }
};