Own VPN client on JavaScript. Part 4 - Configs Component

PS Each part is a part, by itself it does not make sense to get the necessary context and not to experience cognitive dissonance from the lack of so necessary blocks of text, start reading from part 1

Configs - Component responsible for storing and loading OpenVPN configs.

Folder structure

configs │ │ configs.json //     │ get.js │ index.js │ load.js │ parse-configs.js │ └───base //         ovpn empty.file //

parse-configs.js - Function for parsing configs from API .
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Example

I think, looking closer, you will understand that the logic of sorting is obvious.

 const body = ',,,3,4,6,8,9,6' const configs = parseConfigs(body) configs /* [{ "": 3, "": 4, "": 6 }, { "": 8, "": 9, "": 6 }] */

The contents of the parse-configs.js file .

Code

 module.exports = body => body .replace(/[^#]+/, '') .replace(/#/, '') .replace(/\r\n/gi, ',') //     .split(',') //     .reduce((ctx, elem, index) => { if (index > 14) { //   const key = ctx.name_tmp[ctx.config_name_index] ctx.config_tmp[key] = elem ctx.config_name_index++ if (ctx.config_name_index > 14) { ctx.configs.push(ctx.config_tmp) ctx.config_tmp = {} ctx.config_name_index = 0 } } else { //  14      : ping, , etc ctx.name_tmp.push(elem) } return ctx }, { name_tmp: [], config_name_index: 0, config_tmp: {}, configs: [] }).configs

load.js - The function for accessing the API and creating configs files.

Content of load.js file.

Code

 const request = require('request') , fs = require('fs') , Base64 = require(`js-base64`).Base64 , parseConfigs = require('./parse-configs') module.exports = () => new Promise((resolve, reject) => { request(`http://130.158.6.57/api/iphone/`, (err, res, body) => { if (err || res.statusCode != 200) { return reject() } const configs = parseConfigs(body).map(config => { //      base64,    const decode_config = Base64.decode(config.OpenVPN_ConfigData_Base64) .replace(/dev tun/g, `dev tap`) , path = `${__dirname}/base/${config.HostName}.ovpn` fs.writeFileSync(path, decode_config) delete config.OpenVPN_ConfigData_Base64 config.path = path return config }) fs.writeFileSync(`${__dirname}/configs.json`, JSON.stringify(configs)) //      resolve(configs.length) }) })

get.js - Function for searching among downloaded configs.

The contents of the get.js file.

Code

 const fs = require('fs') , Base64 = require(`js-base64`).Base64 module.exports = ({ CountryLong = '-' , Ping = '-' , NumVpnSessions = '-' , Score = '-' , Speed = '-' , Uptime = '-' , TotalUsers = '-' , TotalTraffic = '-' }) => { try { //   const configs = fs.readFileSync(`${__dirname}/configs.json`, { encoding: 'utf8' }) //   ,       //     ,   //      return JSON.parse(configs) .filter(conf => (conf.CountryLong == CountryLong || CountryLong == '-') && (parseInt(conf.Ping) < parseInt(Ping) || Ping == '-') && (parseInt(conf.NumVpnSessions) > parseInt(NumVpnSessions) || NumVpnSessions == '-') && (parseInt(conf.Score) > parseInt(Score) || Score == '-') && (parseInt(conf.Speed) > parseInt(Speed) || Speed == '-') && (parseInt(conf.Uptime) > parseInt(Uptime) || Uptime == '-') && (parseInt(conf.TotalUsers) > parseInt(TotalUsers) || TotalUsers == '-') && (parseInt(conf.TotalTraffic) > parseInt(TotalTraffic) || TotalTraffic == '-') ) } catch (e) { return [] } }

index.js - An object with get and load methods.

Contents of the index.js file.

Code

 module.exports = { load: require('./load'), get: require('./get') }

Application
Application Usage: / app / Configs .

API

Interface component Configs.

 const Configs = require('./../../app/components/configs') Configs.load().then(length => { console.log(` : ${length}`) const search = Configs.get({ CountryLong: 'Japan' , Ping: 22 // 1-22 ms , NumVpnSessions: '-' // empty , Score: '-' // empty , Speed: 13311 // bit , Uptime: 3600000 // ms , TotalUsers: '-' // empty , TotalTraffic: '-' // empty }) console.log(` : ${search.length}`) }, () => { console.log(`  `) })

Test
Test version: / app_test / Configs .

Search object configs.

Key	Type of	Description
Countrylong	String	Country VPN server
Ping	Number	Information delivery time (in milliseconds)
NumVpnSessions	Number	Active sessions
Score	Number	Quality of connection
Speed	Number	Connection speed (in bytes)
Uptime	Number	Server uptime (in milliseconds)
Totalusers	Number	Total connections while running
TotalTraffic	Number	Total traffic on the server during operation (in bytes)

5 part - Vpn component

Navigation

Part 1 - introductory
Part 2 - Development
Part 3 - OpenVPN component
Part 4 - Configs Component
5 part - Vpn component
6 part - Notify component
Part 7 - Context Component
Part 8 - Setting component
Part 9 - Callback Component
10 part - Combining all components
Part 11 - Building an Application for Windows

Source: https://habr.com/ru/post/429432/

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Own VPN client on JavaScript. Part 4 - Configs Component

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