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index.js
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index.js
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const https = require("https");
const analyzer = {
String: (string, replace) => {
if(string.length === 0){
return replace;
}else{
return string;
};
},
OCSP: (cert) => {
try{
const _OCSP = cert.infoAccess["OCSP - URI"];
return _OCSP;
}catch{
return [ undefined ];
};
},
CA: (cert) => {
try{
const _CA = cert.infoAccess["CA Issuers - URI"];
if(_CA[0].endsWith("/")) return [ undefined ];
return _CA;
}catch{
return [ undefined ];
};
},
inputs: {
Port: (port) => {
return !isNaN(parseFloat(port)) && Math.sign(port) === 1 && typeof(port) === "number";
},
Method: (method) => {
if(method === "GET" || method === "HEAD") return true;
if(method !== "GET" && method !== "HEAD") return false;
},
check: {
Options: (input) => {
let output = {};
if(input?.method) output.method = input.method;
if(input?.port) output.port = input.port;
return output;
}
}
}
};
function getDaysRemaining(validFrom, validTo){
const daysRemaining = Math.round(Math.abs(+validFrom - +validTo) / 8.64e7);//DaysBetween;
if(new Date(validTo).getTime() < new Date().getTime()){
return -daysRemaining;
};
return daysRemaining;
};
const default_options = {
agent: new https.Agent({
maxCachedSessions: 0
}),
method: "GET",
port: 443,
path: "/",
rejectUnauthorized: false
};
function Info(inputURL, options){
return new Promise((resolve, reject) => {
try{
if(!inputURL || typeof(inputURL) !== "string") return reject(new Error("Invalid url"));
const _URL = new URL(inputURL);
if(_URL.protocol !== "http:" && _URL.protocol !== "https:") return reject(new Error("Invalid protocol"));
if(!!options === true && Object.prototype.toString.call(options) !== "[object Object]") return reject(new Error("Invalid options"));
options = Object.assign({}, default_options, analyzer.inputs.check.Options(options));
if(analyzer.inputs.Method(options.method) !== true) return reject(new Error("Invalid method"));
if(analyzer.inputs.Port(options.port) !== true) return reject(new Error("Invalid port"));
const request = https.request(Object.assign(options, {host: _URL.host}), (response) => {
const SSL = response.socket.getPeerCertificate();
if(!SSL.valid_from || !SSL.valid_to || !SSL.subjectaltname) return reject(new Error("No certificate"));
response.on("data", data => {});
response.on("end", () => {
const _SSL = {
subject: {
commonName: SSL.subject?.CN,
organization: SSL.subject?.O,
location: analyzer.String([SSL.subject?.L, SSL.subject?.ST, SSL.subject?.C].filter(item => item !== undefined).join(", "), undefined)
},
issuer: {
commonName: SSL.issuer?.CN,
organization: SSL.issuer?.O,
location: analyzer.String([SSL.issuer?.L, SSL.issuer?.ST, SSL.issuer?.C].filter(item => item !== undefined).join(", "), undefined)
},
subjectAlternativeName: SSL.subjectaltname.replace(/DNS:|IP Address:/g, "").split(", "),
valid: response.socket.authorized || false,
validFrom: SSL.valid_from,
validTo: SSL.valid_to,
daysRemaining: getDaysRemaining(new Date(), new Date(SSL.valid_to)),
certificate: {
OCSP: {
url: analyzer.OCSP(SSL)
},
CA:{
issuers: {
url: analyzer.CA(SSL)
}
}
},
bits: SSL.bits,
modulus: SSL.modulus,
exponent: SSL.exponent,
publicKey: SSL.pubkey,
asn1Curve: SSL.asn1Curve,
nistCurve: SSL.nistCurve,
fingerPrint: SSL.fingerprint,
fingerPrint256: SSL.fingerprint256,
ExtendedKeyUsage: SSL.ext_key_usage,
serialNumber: SSL.serialNumber,
raw: SSL.raw
};
return resolve(_SSL);
});
});
request.on("error", error => {
return reject(new Error(error.code));
});
request.on("timeout", () => {
request.destroy();
return reject(new Error("Timed Out"));
});
request.end();
}catch(error){
return reject(new Error(error.code));
};
});
};
module.exports.Info = Info;