easyproxy.min.js

class EasyProxy{static#instances=new Set;static#etld=new Set(["ac","co","com","edu","go","gov","ne","net","or","org","sch"]);static#pasScript=`\nfunction FindProxyForURL(url, host) {\n    while (true) {\n        var hit = RULES[host];\n        if (hit) {\n            return hit;\n        }\n        var dot = host.indexOf(".");\n        if (dot < 0) {\n            return "DIRECT";\n        }\n        host = host.substring(dot + 1);\n    }\n}\n`;static getScript(instances){let proxies=[];let scripts=[];for(let i of instances){let global=i.#routing["*"];if(global){return`function FindProxyForURL(url, host) {\n    return "${global}";\n}\n`}for(let[proxy,rules]of i.#rules){if(rules.size===0){continue}let id;if(proxy==="DIRECT"){id='"DIRECT"'}else{id=`PROXY${proxies.length}`;proxies.push(`var ${id} = "${proxy}";`)}for(let r of rules){scripts.push(`    "${r}": ${id}`)}}}if(proxies.length===0){return'function FindProxyForURL(url, host) {\n    return "DIRECT";\n}\n'}return`${proxies.join("\n")}\n\nvar RULES = {\n${scripts.join(",\n")}\n};\n${EasyProxy.#pasScript}`}static get pacScript(){return EasyProxy.getScript(EasyProxy.#instances)}static make(host){let array=host.split(".");if(array.length<2){return host}let sbd=array.at(-3);let sld=array.at(-2);let tld=array.at(-1);if(sbd&&EasyProxy.#etld.has(sld)){return`${sbd}.${sld}.${tld}`}return`${sld}.${tld}`}#rules=new Map;#routing={};constructor(){EasyProxy.#instances.add(this)}get routing(){return this.#routing}get pacScript(){return EasyProxy.getScript([this])}getScript(proxy){let rules=this.#rules.get(proxy);if(!rules||rules.size===0){return'function FindProxyForURL(url, host) {\n    return "DIRECT";\n}\n'}if(rules.has("*")){return`function FindProxyForURL(url, host) {\n    return "${proxy}";\n}\n`}let scripts=[];for(let r of rules){scripts.push(`    "${r}": PROXY`)}return`var PROXY = "${proxy}";\n\nvar RULES = {\n${scripts.join(",\n")}\n};\n${EasyProxy.#pasScript}`}addProxy(proxy,rules){let prev=this.#rules.get(proxy);if(prev){for(let i of prev){delete this.#routing[i]}}if(!rules){this.#rules.set(proxy,new Set);return true}let next=new Set(rules);this.#rules.set(proxy,next);for(let r of next){this.#routing[r]=proxy}return true}removeProxy(proxy){let rules=this.#rules.get(proxy);if(!rules){return false}this.#rules.delete(proxy);for(let r of rules){delete this.#routing[r]}return true}hasProxy(proxy){return this.#rules.has(proxy)}listProxies(){return[...this.#rules.keys()]}findProxy(host){while(true){let proxy=this.#routing[host];if(proxy){return proxy}let dot=host.indexOf(".");if(dot<0){return}host=host.substring(dot+1)}}addRule(proxy,rule){let find=this.#routing[rule];if(find){return false}let rules=this.#rules.get(proxy);if(rules){rules.add(rule)}else{this.#rules.set(proxy,new Set([rule]))}this.#routing[rule]=proxy;return true}removeRule(proxy,rule){let find=this.#routing[rule];if(!find){return false}this.#rules.get(proxy).delete(rule);delete this.#routing[rule];return true}hasRule(rule){return rule in this.#routing}getRules(proxy){let rules=this.#rules.get(proxy);if(rules){return[...rules]}if(proxy!==null&&proxy!==undefined){return}let result={};for(let[proxy,ruleSet]of this.#rules){result[proxy]=[...ruleSet]}return result}purgeRules(){for(let k of this.#rules.keys()){this.#rules.set(k,new Set)}this.#routing={}}destroy(){this.#rules=new Map;this.#routing={};EasyProxy.#instances.delete(this);return true}}