Custom proxy settings question

data:text/javascript,/*ZenMate*/function FindProxyForURL(url, host) {  var e = { data: {"localDomains":["zenguard.biz","local","dev","ip","box","lvh.me","ripe","invalid","intra","intranet","onion","vcap.me","zeus.pm","127.0.0.1.xip.io","smackaho.st","localtest.me","site","about:addons","about:newtab","about:preferences","about:config"],"nodeOverrides":[{"target_cc":"US","hosts":["hulu.com"],"premium_only":true,"nodes":"US-ALT1"}],"IPv4NotationRE":{},"localIPsRE":{}},nodeLookup: function (nodeDict, cc) {      return nodeDict[cc] || false;    },compareHosts: function (hosts, host) {      var h, _i, _len;      for (_i = 0, _len = hosts.length; _i < _len; _i++) {        h = hosts[_i];        if (this.matchWildcardDomain(host, h)) {          return h;        }      }    },compareURLs: function (patterns, url) {      var p, _i, _len;      for (_i = 0, _len = patterns.length; _i < _len; _i++) {        p = patterns[_i];        if (p.test(url)) {          return p;        }      }    },dnsDomainIs: function (host, pattern) {      return host.length >= pattern.length && host.substring(host.length - pattern.length) === pattern;    },matchWildcardDomain: function (host, domain) {      var exactMatch, hasSubdomain, tldMatch;      exactMatch = host === domain;      tldMatch = host.slice(-domain.length) === domain;      hasSubdomain = host[host.lastIndexOf(domain) - 1] === '.';      return exactMatch || (tldMatch && hasSubdomain);    },matchNodeOverride: function (host, cc) {      var o, result, _ref;      result = (function() {        var _i, _len, _ref, _results;        _ref = this.data.nodeOverrides;        _results = [];        for (_i = 0, _len = _ref.length; _i < _len; _i++) {          o = _ref[_i];          if (o.target_cc === cc && this.compareHosts(o.hosts, host)) {            _results.push(o);          }        }        return _results;      }).call(this);      return (result != null ? (_ref = result[0]) != null ? _ref.nodes : void 0 : void 0) || false;    },matchRules: function (rules, host, url) {      var i, rule, _i, _len;      if (!((rules != null ? rules.length : void 0) > 0)) {        return;      }      if (this.data.rulesWithOverrides == null) {        rules = mergeRuleOverrides(rules, config.ruleOverrides);      }      for (i = _i = 0, _len = rules.length; _i < _len; i = ++_i) {        rule = rules[i];        if (this.matchWildcardDomain(host, rule.domain) || ((rule.hosts != null) && this.compareHosts(rule.hosts, host))) {          return i;        }      }    },_getProxyState: function (url, host, rules) {      var local, match, _i, _len, _ref;      url = url.toLowerCase();      if (!~host.indexOf('.') && !~host.indexOf(':')) {        return 'LOCAL';      }      if (this.data.IPv4NotationRE.test(host) && data.localIPsRE.test(host)) {        return 'LOCAL';      }      _ref = this.data.localDomains;      for (_i = 0, _len = _ref.length; _i < _len; _i++) {        local = _ref[_i];        if (this.matchWildcardDomain(host, local)) {          return 'LOCAL';        }      }      match = this.matchRules(rules, host, url);      if (match != null) {        return rules[match].cc;      } else {        return 'DEFAULT';      }    } };  e.data.localDomains = e.data.localDomains.concat(["zenmate.com","d1jr1idae5ms9n.cloudfront.net"]);  e.data.IPv4NotationRE = /^\d+\.\d+\.\d+\.\d+$/g;e.data.localIPsRE = /(^127\.)|(^192\.168\.)|(^10\.)|(^172\.1[6-9]\.)|(^172\.2[0-9]\.)|(^172\.3[0-1]\.)/;  e.data.defaultLocation = 'US';  e.data.nodeDict = {"US":"PROXY 127.0.0.1:49357","HK":"PROXY 127.0.0.1:49358","GB":"PROXY 127.0.0.1:49359","DE":"PROXY 127.0.0.1:49360","RO":"PROXY 127.0.0.1:49361","US-ALT1":"PROXY 127.0.0.1:49362"};  e.data.rulesWithOverrides = [];  var res = e._getProxyState(url, host, e.data.rulesWithOverrides);  if (res === 'LOCAL' || res === 'DIRECT' || res === 'OFF') {return 'DIRECT'};  if (res === 'DEFAULT') {cc = e.data.defaultLocation} else {cc = res};  var override = e.matchNodeOverride(host, cc);  if (override) {cc = override};  return e.nodeLookup(e.data.nodeDict, cc) || 'DIRECT';}

I found this in the proxy settings inside of my Firefox options. Can anyone tell me anything about this please? Thank you. <pre><nowiki>data:text/javascript,/*ZenMate*/function FindProxyForURL(url, host) { var e = { data: {"localDomains":["zenguard.biz","local","dev","ip","box","lvh.me","ripe","invalid","intra","intranet","onion","vcap.me","zeus.pm","127.0.0.1.xip.io","smackaho.st","localtest.me","site","about:addons","about:newtab","about:preferences","about:config"],"nodeOverrides":[{"target_cc":"US","hosts":["hulu.com"],"premium_only":true,"nodes":"US-ALT1"}],"IPv4NotationRE":{},"localIPsRE":{}},nodeLookup: function (nodeDict, cc) { return nodeDict[cc] || false; },compareHosts: function (hosts, host) { var h, _i, _len; for (_i = 0, _len = hosts.length; _i < _len; _i++) { h = hosts[_i]; if (this.matchWildcardDomain(host, h)) { return h; } } },compareURLs: function (patterns, url) { var p, _i, _len; for (_i = 0, _len = patterns.length; _i < _len; _i++) { p = patterns[_i]; if (p.test(url)) { return p; } } },dnsDomainIs: function (host, pattern) { return host.length >= pattern.length && host.substring(host.length - pattern.length) === pattern; },matchWildcardDomain: function (host, domain) { var exactMatch, hasSubdomain, tldMatch; exactMatch = host === domain; tldMatch = host.slice(-domain.length) === domain; hasSubdomain = host[host.lastIndexOf(domain) - 1] === '.'; return exactMatch || (tldMatch && hasSubdomain); },matchNodeOverride: function (host, cc) { var o, result, _ref; result = (function() { var _i, _len, _ref, _results; _ref = this.data.nodeOverrides; _results = []; for (_i = 0, _len = _ref.length; _i < _len; _i++) { o = _ref[_i]; if (o.target_cc === cc && this.compareHosts(o.hosts, host)) { _results.push(o); } } return _results; }).call(this); return (result != null ? (_ref = result[0]) != null ? _ref.nodes : void 0 : void 0) || false; },matchRules: function (rules, host, url) { var i, rule, _i, _len; if (!((rules != null ? rules.length : void 0) > 0)) { return; } if (this.data.rulesWithOverrides == null) { rules = mergeRuleOverrides(rules, config.ruleOverrides); } for (i = _i = 0, _len = rules.length; _i < _len; i = ++_i) { rule = rules[i]; if (this.matchWildcardDomain(host, rule.domain) || ((rule.hosts != null) && this.compareHosts(rule.hosts, host))) { return i; } } },_getProxyState: function (url, host, rules) { var local, match, _i, _len, _ref; url = url.toLowerCase(); if (!~host.indexOf('.') && !~host.indexOf(':')) { return 'LOCAL'; } if (this.data.IPv4NotationRE.test(host) && data.localIPsRE.test(host)) { return 'LOCAL'; } _ref = this.data.localDomains; for (_i = 0, _len = _ref.length; _i < _len; _i++) { local = _ref[_i]; if (this.matchWildcardDomain(host, local)) { return 'LOCAL'; } } match = this.matchRules(rules, host, url); if (match != null) { return rules[match].cc; } else { return 'DEFAULT'; } } }; e.data.localDomains = e.data.localDomains.concat(["zenmate.com","d1jr1idae5ms9n.cloudfront.net"]); e.data.IPv4NotationRE = /^\d+\.\d+\.\d+\.\d+$/g;e.data.localIPsRE = /(^127\.)|(^192\.168\.)|(^10\.)|(^172\.1[6-9]\.)|(^172\.2[0-9]\.)|(^172\.3[0-1]\.)/; e.data.defaultLocation = 'US'; e.data.nodeDict = {"US":"PROXY 127.0.0.1:49357","HK":"PROXY 127.0.0.1:49358","GB":"PROXY 127.0.0.1:49359","DE":"PROXY 127.0.0.1:49360","RO":"PROXY 127.0.0.1:49361","US-ALT1":"PROXY 127.0.0.1:49362"}; e.data.rulesWithOverrides = []; var res = e._getProxyState(url, host, e.data.rulesWithOverrides); if (res === 'LOCAL' || res === 'DIRECT' || res === 'OFF') {return 'DIRECT'}; if (res === 'DEFAULT') {cc = e.data.defaultLocation} else {cc = res}; var override = e.matchNodeOverride(host, cc); if (override) {cc = override}; return e.nodeLookup(e.data.nodeDict, cc) || 'DIRECT';}</nowiki></pre>