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png.js
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// CodeSnippets/Documents/Websites/NodeJs/createPdfServer.js
// TODO: sqlite
const cors = require("cors");
const express = require("express");
const puppeteer = require("puppeteer");
const path = require('path');
const status = require('./status');
// Globals
const port = 3000;
var browser;
// Initializing Express and Puppeteer Browser
const app = express();
// Middleware
app.use(cors());
//localhost:3000/png/softreck.com
// http://webscreen.pl:3000/png/softreck.com
// http://localhost:3000/png/www.phpfunc.com
// Check if exist base64 of domain on image
// if not, try to download
app.get('/url/:url', async (req, res) => {
if (!req.params.url) {
throw new Error("domain is required");
}
// Buffer.from("SGVsbG8gV29ybGQ=", 'base64').toString('ascii')
const urld = Buffer.from(req.params.url).toString('base64');
// console.log(urld);
var img = path.join('png', urld + '.png');
// var url = decodeURI(req.params.url);
var url = req.params.url;
try {
status(url, function (check) {
console.log(check); //true
// absolute path to the file
let p = path.join(__dirname, img);
const fs = require("fs");
if (fs.existsSync(p)) {
console.log(`HDD YES: ${url}`);
// send a png file
res.sendFile(p);
return true;
} else {
capture(img, url, res)
return true;
}
},
function (check) {
console.log(check); //true
if(check == 'ERR_TLS_CERT_ALTNAME_INVALID') {
capture(img, url, res)
return true;
}
download('', url, res);
return false;
}
);
// img = 'img/not.png';
// download(img, url, res);
} catch (err) {
console.log(":::err.message:");
console.log(err.message);
download('', url, res);
return false;
}
// img = 'img/not.png';
// download(img, url, res);
})
// http://localhost:3000/png/softreck.com
// http://localhost:3000/png/softreck.pl
app.get('/png/:domain', async (req, res) => {
if (!req.params.domain) {
throw new Error("domain is required");
}
var domain = req.params.domain;
var img = path.join('png', domain + '.png');
// var p = path.join(__dirname, 'img', 'not.png');
var url = `https://${domain}`
try {
status(url, function (check) {
console.log(check); //true
// download(img, url, res) ||
// absolute path to the file
let p = path.join(__dirname, img);
const fs = require("fs"); // Or `import fs from "fs";` with ESM
if (fs.existsSync(p)) {
// send a png file
res.sendFile(p);
console.log(`HDD YES: ${url}`);
return true;
} else {
capture(img, url, res)
return true;
}
},
function (check) {
console.log(check); //true
download('', url, res);
return false;
}
);
} catch (err) {
console.log(":::err.message:");
console.log(err.message);
download('', url, res);
return false;
}
})
/**
* @param img
* @param url
* @param res
* @returns {boolean}
*/
function download(img, url, res) {
// absolute path to the file
var p = path.join(__dirname, 'img', 'not.png');
if (img.length === 0) {
console.log(`HDD NOT: ${url}`);
} else {
console.log(`HDD YES: ${url}`);
p = path.join(__dirname, img);
}
const fs = require("fs"); // Or `import fs from "fs";` with ESM
if (fs.existsSync(p)) {
// send a png file
res.sendFile(p);
return true;
}
return false;
}
/**
*
* @param img
* @param url
* @param res
* @returns {Promise<boolean>}
*/
async function capture(img, url, res) {
// if(capture(img, url, res)){
///////////
const browser = await puppeteer.launch({
headless: true,
// timeout: 0,
ignoreHTTPSErrors: true,
// ignoreDefaultArgs: ['--disable-extensions'],
args: [
'--no-sandbox',
'--disable-setuid-sandbox',
'--ignore-certificate-errors',
// '--disable-gpu',
]
});
// try {
const webPage = await browser.newPage();
const response = await webPage.goto(url, {
// waitUntil: "networkidle0"
});
const chain = response.request().redirectChain();
// console.log(chain); // Return 1
// console.log("chain " + chain.length); // Return 1
if (chain.length > 0) {
// url = chain[0].response().url();
url = chain[0].response().headers().location;
console.log("url redirected: ", url); // Return string 'http://example.com'
// url = chain[1].url();
// console.log("url", url); // Return string 'http://example.com'
let p = path.join(__dirname, img);
// console.log("p redirected: ", p); // Return string 'http://example.com'
// let p = img;
const fs = require("fs"); // Or `import fs from "fs";` with ESM
if (fs.existsSync(p)) {
// send a png file
res.sendFile(p);
console.log(`HDD YES: ${url}`);
} else {
capture(img, url, res)
}
// capture(img, url, res);
await browser.close();
return true;
}
const png = await webPage.screenshot({path: img});
// } catch (err) {
// console.log(err.toString());
// download('', url, res);
// await browser.close();
// return false;
// }
await browser.close();
///////////
res.contentType("image/png");
res.send(png);
console.log(`HTTP YES: ${url}`);
return true;
}
app.get("/remove", async (req, resp) => {
console.log('remove cache');
const directory = 'png';
const fs = require('fs');
const path = require('path');
fs.readdir(directory, (err, files) => {
if (err) {
// throw err;
resp.send({"status": false, "message": err.message});
}
for (const file of files) {
fs.unlink(path.join(directory, file), err => {
if (err) {
// throw err;
resp.send({"status": false, "message": err.message});
}
});
}
});
resp.send({"status": true});
// resp.send(`Request rcvd: ${url}`);
});
process.on('unhandledRejection', function (err) {
console.log(':::unhandledRejection:');
console.log(err);
// sendInTheCalvary(err);
});
app.listen(port, () => {
console.log(`Server started on port ${port}`)
})
/*
app.get("/http/:domain", async (req, resp) => {
if (!req.params.domain) {
throw new Error("domain is required");
}
var domain = req.params.domain;
var url = `https://${domain}`
console.log(`Rcvd: ${url}`);
///////////
const browser = await puppeteer.launch({
headless: true,
ignoreDefaultArgs: ['--disable-extensions'],
args: ['--no-sandbox', '--disable-setuid-sandbox']
});
const webPage = await browser.newPage();
await webPage.goto(url, {
waitUntil: "networkidle0"
});
var img = 'png/' + domain + '.png';
const png = await webPage.screenshot({path: img});
await browser.close();
///////////
resp.contentType("image/png");
resp.send(png);
// resp.send(`Request rcvd: ${url}`);
});
*/