158 lines
4.8 KiB
JavaScript
158 lines
4.8 KiB
JavaScript
/**
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** ==============================
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** OOOO O O OOOO
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** O O O O O O O
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** O O O O O O O
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** OOOO OOOO O OOO OOOO
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** O O O O O O O
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** O O O O O O O
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** OOOO OOOO O O OOOO
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** ==============================
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** Dr. Stefan Bosse http://www.bsslab.de
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**
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** COPYRIGHT: THIS SOFTWARE, EXECUTABLE AND SOURCE CODE IS OWNED
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** BY THE AUTHOR(S).
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** THIS SOURCE CODE MAY NOT BE COPIED, EXTRACTED,
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** MODIFIED, OR OTHERWISE USED IN A CONTEXT
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** OUTSIDE OF THE SOFTWARE SYSTEM.
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**
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** $AUTHORS: Stefan Bosse
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** $INITIAL: (C) 2006-2016 BSSLAB
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** $CREATED: 3/28/15 by sbosse.
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** $VERSION: 1.1.9
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**
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** $INFO:
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**
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* ================================
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* DOS: Common connection utilities.
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* ================================
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*
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**
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** $ENDOFINFO
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*/
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"use strict";
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var log = 0;
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var util = Require('util');
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var http = Require('http');
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var Io = Require('com/io');
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var Buf = Require('dos/buf');
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var Net = Require('dos/network');
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var xmldoc = Require('dos/ext/xmldoc');
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var Comp = Require('com/compat');
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var Perv = Comp.pervasives;
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var Hashtbl = Comp.hashtbl;
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var String = Comp.string;
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var Rand = Comp.random;
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var Array = Comp.array;
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var trace = Io.tracing;
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var div = Perv.div;
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var Mode = {
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ONECHAN:'ONECHAN', // Only client can send messages (ang get replies on the request channel) - one two-way channel
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TWOCHAN:'TWOCHAN', // Both broker server and client can send messages, i.e., different one-way request/reply channels
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KEEPALIVE:'KEEPALIVE',// Reuse connections
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AUTO:'AUTO' // Automatic mode 1-chan/2-chan/keepalive, broker only
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}
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/*
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** Parse query string '?attr=val&attr=val...
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*/
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function parseQueryString( url ) {
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var queryString = url.substring( url.indexOf('?') + 1 );
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if (queryString == url) return [];
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var params = {}, queries, temp, i, l;
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// Split into key/value pairs
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queries = queryString.split("&");
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// Convert the array of strings into an object
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for ( i = 0, l = queries.length; i < l; i++ ) {
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temp = queries[i].split('=');
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if (temp[1]==undefined) temp[1]='true';
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params[temp[0]] = temp[1];
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}
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return params;
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}
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/** Get XML data
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*
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*/
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function getData(data) {
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if (data==undefined) return undefined;
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else if (data.val!='') return data.val;
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else return data.children.toString();
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}
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function ipequal(ip1,ip2) {
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if (ip1==undefined || ip2==undefined) return false;
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else if ((String.equal(ip1,'localhost') || String.equal(ip1,'127.0.0.1')) &&
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(String.equal(ip2,'localhost') || String.equal(ip2,'127.0.0.1'))) return true;
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else return String.equal(ip1,ip2);
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}
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/** Split multiple first-level {}\n{}\n message parts // Buffer or string
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*
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*/
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function splitData(data) {
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var messages;
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if (Buffer.isBuffer(data)) messages = data.toString().split('\n');
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else messages = data.split('\n');
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return messages;
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}
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/** Decode a message (ASCII -> Binary)
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*
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*/
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function decode(msg) {
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if (msg.hostport && msg.hostport.length!=Net.PORT_SIZE) msg.hostport = Net.port_of_str(msg.hostport);
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if (msg.sendport && msg.sendport.length!=Net.PORT_SIZE) msg.sendport = Net.port_of_str(msg.sendport);
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if (msg.srvport && msg.srvport.length!=Net.PORT_SIZE) msg.srvport = Net.port_of_str(msg.srvport);
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if (msg.data && msg.data[0]) for(var i in msg.data) decode(msg.data[i]);
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else if (msg.data) decode(msg.data);
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}
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/** Encode a message (Binary->ASCII)
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*
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*/
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function encode(msg) {
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if (msg.hostport && msg.hostport.length==Net.PORT_SIZE) msg.hostport = Net.port_to_str(msg.hostport);
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if (msg.sendport && msg.sendport.length==Net.PORT_SIZE) msg.sendport = Net.port_to_str(msg.sendport);
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if (msg.srvport && msg.srvport.length==Net.PORT_SIZE) msg.srvport = Net.port_to_str(msg.srvport);
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if (msg.data && msg.data[0]) for(var i in msg.data) encode(msg.data[i]);
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else if (msg.data) encode(msg.data);
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}
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module.exports = {
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decode:decode,
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encode:encode,
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// Extract data from xmldoc <data>..</data> element
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getData: getData,
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ipequal: ipequal,
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splitData:splitData,
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EOM: '\n',
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// Parse HTTP query string
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parseQueryString: parseQueryString,
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is_error: function (data,err) {
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if (err==undefined)
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return (data.length > 0 && String.get(data,0)=='E');
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else
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return (String.equal(data,err));
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},
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is_status: function (data,stat) {
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if (stat==undefined)
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return (data.length > 4 && String.equal(data.substring(0,4),'STAT'));
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else
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return (String.equal(data,stat));
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},
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is_xml: function(data) {
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return (data.length > 5 && String.equal(data.substring(0,5),'<xml>'));
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},
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Mode:Mode
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};
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