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var JSJaCHBC_MAX_HOLD = 1;
var JSJACHBC_MAX_WAIT = 300;
function JSJaCHttpBindingConnection(oDbg) {
this.base = JSJaCConnection;
this.base(oDbg);
this._hold = JSJaCHBC_MAX_HOLD;
this._inactivity = 0;
this._min_polling = 0;
this._wait = JSJACHBC_MAX_WAIT;
this.connect = JSJaCHBCConnect;
this.disconnect = JSJaCHBCDisconnect;
this.isPolling = function() { return (this._hold == 0) };
this.setPollInterval = function(timerval) {
if (!timerval || isNaN(timerval)) {
this.oDbg.log("Invalid timerval: " + timerval,1);
return -1;
}
if (!this.isPolling()) {
this._timerval = 1;
return -1;
}
if (this._min_polling && timerval < this._min_polling*1000)
this._timerval = this._min_polling*1000;
else if (this._inactivity && timerval > this._inactivity*1000)
this._timerval = this._inactivity*1000;
else
this._timerval = timerval;
return this._timerval;
};
this._getRequestString = JSJaCHBCGetRequestString;
this._getStreamID = JSJaCHBCGetStreamID;
this._prepareResponse = JSJaCHBCPrepareResponse;
this._setHold = function(hold) {
if (!hold || isNaN(hold))
return -1;
if (hold < 0)
hold = 0;
else if (hold > JSJaCHBC_MAX_HOLD)
hold = JSJaCHBC_MAX_HOLD;
this._hold = hold;
return this._hold;
};
this._setupRequest = JSJaCHBCSetupRequest;
this._getFreeSlot = function() {
for (var i=0; i<this._hold+1; i++)
if (typeof(this._req[i]) == 'undefined' || this._req[i].readyState == 4)
return i;
return -1; // nothing found
}
/* start sending from queue for not polling connections */
oCon = this;
if (!this.isPolling())
setInterval("oCon._sendQueue()",1);
}
function JSJaCHBCSetupRequest(async) {
var req = XmlHttp.create();
try {
req.open("POST",this.http_base,async);
req.setRequestHeader('Content-Type','text/xml; charset=utf-8');
} catch(e) { this.oDbg.log(e,1); }
return req;
}
function JSJaCHBCGetRequestString(xml) {
this._rid++;
var reqstr = "<body rid='"+this._rid+"' sid='"+this._sid+"' xmlns='http://jabber.org/protocol/httpbind' ";
if (JSJaC_HAVEKEYS) {
reqstr += "key='"+this._keys.getKey()+"' ";
if (this._keys.lastKey()) {
this._keys = new JSJaCKeys(hex_sha1,this.oDbg);
reqstr += "newkey='"+this._keys.getKey()+"' ";
}
}
if (xml) {
reqstr += ">" + xml + "</body>";
} else {
reqstr += "/>";
}
return reqstr;
}
function JSJaCHBCPrepareResponse(req) {
if (!this.connected())
return null;
if (typeof(req) == 'undefined' || !req)
return null;
/* handle error */
if (req.status != 200) {
this.oDbg.log("invalid response:\n" + req.responseText,1);
clearTimeout(this._timeout); // remove timer
this._connected = false;
this.oDbg.log("Disconnected.",1);
this.handleEvent('ondisconnect');
if (req.status < 500)
this.handleEvent('onerror',JSJaCError('500','cancel','service-unavailable'));
else
this.handleEvent('onerror',JSJaCError('503','cancel','service-unavailable'));
return null;
}
if (!req.responseXML)
return null;
// Check for errors from the server
var body = req.responseXML.firstChild;
if (body.getAttribute("type") == "terminate") {
this.oDbg.log("invalid response:\n" + req.responseText,1);
clearTimeout(this._timeout); // remove timer
this._connected = false;
this.oDbg.log("Disconnected.",1);
this.handleEvent('ondisconnect');
this.handleEvent('onerror',JSJaCError('500','cancel','service-unavailable'));
return null;
}
return req.responseXML;
}
function JSJaCHBCConnect(http_base,server,username,resource,pass,timerval,register) {
// initial request to get sid and streamid
this.http_base = http_base || '/';
this.server = server || 'localhost';
this.username = username;
this.resource = resource;
this.pass = pass;
this.register = register;
this.oDbg.log("http_base: " + this.http_base + "\nserver:" + server,2);
this._rid = Math.round( 100000.5 + ( ( (900000.49999) - (100000.5) ) * Math.random() ) );
var reqstr = '';
if (JSJaC_HAVEKEYS) {
this._keys = new JSJaCKeys(hex_sha1,this.oDbg); // generate first set of keys
key = this._keys.getKey();
reqstr += "<body hold='"+this._hold+"' xmlns='http://jabber.org/protocol/httpbind' to='"+this.server+"' wait='"+this._wait+"' rid='"+this._rid+"' newkey='"+key+"'/>";
} else
reqstr += "<body hold='"+this._hold+"' xmlns='http://jabber.org/protocol/httpbind' to='"+this.server+"' wait='"+this._wait+"' rid='"+this._rid+"'/>";
var slot = this._getFreeSlot();
this._req[slot] = this._setupRequest(false);
this.oDbg.log(reqstr,4);
this._req[slot].send(reqstr);
this.oDbg.log(this._req[slot].getAllResponseHeaders(),4);
this.oDbg.log(this._req[slot].responseText,4);
if (!this._req[slot].responseXML || !this._req[slot].responseXML.firstChild) {
this.handleEvent('onerror',JSJaCError('500','cancel','service-unavailable'));
return;
}
var body = this._req[slot].responseXML.firstChild;
// get session ID
this._sid = body.getAttribute('sid');
this.oDbg.log("got sid: "+this._sid,2);
// get attributes from response body
if (body.getAttribute('polling'))
this.min_polling = body.getAttribute('polling');
if (body.getAttribute('inactivity'))
this.inactivity = body.getAttribute('inactivity');
if (body.getAttribute('requests'))
this._setHold(body.getAttribute('requests'));
// must be done after response attributes have been collected
this.setPollInterval(timerval);
this._connected = true;
/* wait for initial stream response to extract streamid needed
* for digest auth
*/
this._getStreamID(slot);
}
function JSJaCHBCGetStreamID(slot) {
this.oDbg.log(this._req[slot].responseText,4);
if (!this._req[slot].responseXML || !this._req[slot].responseXML.firstChild) {
this.handleEvent('onerror',JSJaCError('500','cancel','service-unavailable'));
return;
}
var body = this._req[slot].responseXML.firstChild;
// extract stream id used for non-SASL authentication
if (body.getAttribute('authid')) {
this.streamid = body.getAttribute('authid');
this.oDbg.log("got streamid: "+this.streamid,2);
} else {
oCon = this;
this._timeout = setTimeout("oCon._sendEmpty()",this.getPollInterval());
return;
}
if (this.register)
this._doReg();
else
this._doAuth();
this._timeout = setTimeout("oCon._process()",this.getPollInterval());
}
function JSJaCHBCDisconnect() {
if (!this.connected())
return;
if (this._timeout)
clearTimeout(this._timeout); // remove timer
this._rid++;
var xmlhttp = this._setupRequest(false);
var reqstr = "<body type='terminate' xmlns='http://jabber.org/protocol/httpbind' sid='"+this._sid+"' rid='"+this._rid+"'";
if (JSJaC_HAVEKEYS) {
reqstr += " key='"+this._keys.getKey()+"'";
}
reqstr += "><presence type='unavailable' xmlns='jabber:client'/></body>"
xmlhttp.send(reqstr);
this.oDbg.log("Disconnected: "+xmlhttp.responseText,2);
this._connected = false;
this.handleEvent('ondisconnect');
}
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