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parser.js
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parser.js
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// noinspection DuplicatedCode
const IPv4_REGEX = /^(?:[0-1]?[0-9]{1,2}|2[0-4][0-9]|25[0-5])\.(?:[0-1]?[0-9]{1,2}|2[0-4][0-9]|25[0-5])\.(?:[0-1]?[0-9]{1,2}|2[0-4][0-9]|25[0-5])\.(?:[0-1]?[0-9]{1,2}|2[0-4][0-9]|25[0-5])$/;
const guess_type = (url = null) => {
if (!url || typeof url !== 'string') {
return null;
}
if (url.match(/socks5|[=\/]socks5([\/&]|$)/i)) {
return 'socks5';
} else if (url.match(/socks4|[=\/]socks4([\/&]|$)/i)) {
return 'socks4';
} else if (url.match(/http[_.\-&]|[=\/]http([\/&]|$)/i)) {
return 'http';
} else if (url.match(/https[_.\-&]|[=\/]http([\/&]|$)/i)) {
return 'https';
}
return null;
}
const parser = {
html: (text, url = null) => {
if (typeof text !== 'string') {
return [];
}
text = text.trim();
if (text === '') {
return [];
}
if (!text.includes('<') && !text.includes('>') && !/<body[^>]*>/.test(text)) {
return [];
}
let document = new DOMParser().parseFromString(text, 'text/html');
document = document.body;
// find the table
let tables = document.querySelectorAll('table');
let result = [];
let the_type = guess_type(url);
if (tables.length > 0) {
for (let table of tables) {
// find the tr-tag
table = table.querySelectorAll('tr');
if (table.length === 0) {
continue;
}
// find nested table on td if contains ipv4 and port from text of td
table.forEach((tr) => {
let td = tr.querySelectorAll('td');
if (td.length === 0) {
return;
}
let proxy = null;
let type = null;
for (let _td of td) {
if (proxy && type) {
break;
}
_td = _td.textContent.trim();
if (!proxy && _td.match(/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d{1,5}$/)) {
proxy = _td;
continue;
}
if (!type && _td.match(/^(socks4|socks5|http|https)$/i)) {
type = _td.toLowerCase();
continue;
}
if (proxy && !type && _td.match(/^(socks4|socks5|http|https)$/i)) {
type = _td.toLowerCase();
break;
}
}
// next check without protocol
if (!proxy) {
let ip = null;
let port = null;
for (let _td of td) {
if (proxy && type) {
break;
}
_td = _td.textContent.trim();
if (!ip && _td.match(/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/)) {
ip = _td;
continue;
}
if (ip && !port && _td.match(/^\d+$/) && parseInt(_td) > 0 && parseInt(_td) < 65535) {
port = _td;
proxy = `${ip}:${port}`;
continue;
}
if (!type && _td.match(/^(socks4|socks5|http|https)$/i)) {
type = _td.toLowerCase();
continue;
}
if (proxy && !type && _td.match(/^(socks4|socks5|http|https)$/i)) {
type = _td.toLowerCase();
break;
}
}
}
if (!proxy) {
return;
}
let lines = proxy.split(':');
if (lines.length !== 2) {
return;
}
let ip = lines[0];
let port = parseInt(lines[1]);
if (port < 1 || port > 65535) {
return;
}
if (IPv4_REGEX.test(ip) !== true) {
return;
}
type = type || the_type;
let value = type ? `${type}://${ip}:${port}` : `http://${ip}:${port}`;
if (!result.includes(value)) {
result.push(value);
}
});
}
}
return result;
},
/**
* Parse text to get proxy list
* @param {object|string} text
* @param {string|null} url
* @returns {string[]}
*/
json: (text, url = null) => {
if (typeof text !== 'string' && typeof text !== 'object') {
return [];
}
let object;
if (typeof text === 'string') {
text = text.trim();
if (text === '') {
return [];
}
try {
object = JSON.parse(text);
} catch (error) {
return [];
}
} else {
object = text;
text = null;
}
if (!object || typeof object !== 'object') {
return [];
}
/**
* Guess the object
* Should be ip: "ipv4", port: "number"|number, protocol: "string"|protocols: ["string"]
* @param object
* @returns {*|boolean}
*/
const guess_loop = (object) => {
for (let i in object) {
let item = object[i];
if (typeof item !== 'object') {
continue;
}
if (!item.ip || typeof item.ip !== 'string' || IPv4_REGEX.test(item.ip) !== true) {
continue;
}
if (!item.port || (typeof item.port !== 'string' && typeof item.port !== 'number')) {
continue;
}
return object;
}
return false;
}
let found = guess_loop(object);
if (!found) {
// guessing
for (let key in object) {
if (typeof object[key] !== 'object') {
continue;
}
found = guess_loop(object[key]);
if (found) {
object = object[key];
break;
}
for (let i in object[key]) {
if (!object[key][i] || typeof object[key][i] !== 'object') {
continue;
}
found = guess_loop(object[key][i]);
if (found) {
object = object[key][i];
break;
}
}
if (found) {
break;
}
}
}
if (!found) {
return [];
}
object = found;
found = null;
let type = guess_type(url);
const allowedTypes = ['socks4', 'socks5', 'http', 'https'];
let result = [];
for (let key in object) {
let item = object[key];
if (!item || typeof item !== 'object') {
continue;
}
// only support ipv4
if (IPv4_REGEX.test(item.ip) !== true) {
continue;
}
let port = item.port.toString();
if (!/^\d+$/.test(port)) {
continue;
}
item.port = parseInt(port);
if (port < 1 || port > 65535) {
continue;
}
let protocols = [];
if (item.hasOwnProperty('protocol')) {
if (typeof item.protocol === 'string') {
item.protocol = item.protocol.toLowerCase();
if (allowedTypes.includes(item.protocol)) {
protocols.push(item.protocol);
}
}
} else if (item.hasOwnProperty('type')) {
if (typeof item.type === 'string') {
item.type = item.type.toLowerCase();
if (allowedTypes.includes(item.type)) {
protocols.push(item.protocol);
}
}
}
if (protocols.length < 1) {
if (item.hasOwnProperty('protocols') && Array.isArray(item.protocols)) {
for (let protocol of item.protocols) {
if (typeof protocol === 'string') {
protocol = protocol.toLowerCase();
if (allowedTypes.includes(protocol) && !protocols.includes(protocol)) {
protocols.push(protocol);
}
}
}
}
}
let value;
if (!protocols.length) {
value = type ? `${type}://${item.ip}:${item.port}` : `http://${item.ip}:${item.port}`;
if (!result.includes(value)) {
result.push(value);
}
continue;
}
for (let protocol of protocols) {
if (typeof protocol !== 'string') {
continue;
}
protocol = protocol.toLowerCase();
if (!allowedTypes.includes(protocol)) {
continue;
}
let value = `${protocol}://${item.ip}:${item.port}`;
if (!result.includes(value)) {
result.push(value);
}
}
}
return result;
},
/**
* Parse text to get proxy list
* @param text
* @param url
* @returns {*[]}
*/
text: (text, url = null) => {
if (typeof text !== 'string') {
return [];
}
text = text.trim();
if (text === '') {
return [];
}
let type = guess_type(url);
text = text.split('\n');
let result = [];
const number = '0123456789';
for (let line of text) {
if (line.trim() === '') {
continue;
}
if (!line.includes(':') || line.match(/^\s/)) {
continue;
}
let currentType = type;
let match = line.match(/^(socks4|socks5|http|https):\/\//i);
if (match) {
currentType = match[1].toLowerCase();
line = line.replace(/^(socks4|socks5|http|https):\/\//i, '');
}
if (!number.includes(line[0])) {
continue;
}
let lines = line.replace(/^(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d{1,5})(\D.*)?$/g, '$1').split(':');
if (lines.length !== 2) {
continue;
}
let ip = lines[0];
let port = parseInt(lines[1]);
if (port < 1 || port > 65535) {
continue;
}
if (IPv4_REGEX.test(ip) !== true) {
continue;
}
let value = currentType ? `${currentType}://${ip}:${port}` : `http://${ip}:${port}`;
if (!result.includes(value)) {
result.push(value);
}
}
return result;
}
};
export default parser;