send-mail/node_modules/nodemailer/lib/fetch/index.js
2020-11-12 16:31:20 +01:00

270 lines
7.7 KiB
JavaScript

'use strict';
const http = require('http');
const https = require('https');
const urllib = require('url');
const zlib = require('zlib');
const PassThrough = require('stream').PassThrough;
const Cookies = require('./cookies');
const packageData = require('../../package.json');
const MAX_REDIRECTS = 5;
module.exports = function (url, options) {
return fetch(url, options);
};
module.exports.Cookies = Cookies;
function fetch(url, options) {
options = options || {};
options.fetchRes = options.fetchRes || new PassThrough();
options.cookies = options.cookies || new Cookies();
options.redirects = options.redirects || 0;
options.maxRedirects = isNaN(options.maxRedirects) ? MAX_REDIRECTS : options.maxRedirects;
if (options.cookie) {
[].concat(options.cookie || []).forEach(cookie => {
options.cookies.set(cookie, url);
});
options.cookie = false;
}
let fetchRes = options.fetchRes;
let parsed = urllib.parse(url);
let method = (options.method || '').toString().trim().toUpperCase() || 'GET';
let finished = false;
let cookies;
let body;
let handler = parsed.protocol === 'https:' ? https : http;
let headers = {
'accept-encoding': 'gzip,deflate',
'user-agent': 'nodemailer/' + packageData.version
};
Object.keys(options.headers || {}).forEach(key => {
headers[key.toLowerCase().trim()] = options.headers[key];
});
if (options.userAgent) {
headers['user-agent'] = options.userAgent;
}
if (parsed.auth) {
headers.Authorization = 'Basic ' + Buffer.from(parsed.auth).toString('base64');
}
if ((cookies = options.cookies.get(url))) {
headers.cookie = cookies;
}
if (options.body) {
if (options.contentType !== false) {
headers['Content-Type'] = options.contentType || 'application/x-www-form-urlencoded';
}
if (typeof options.body.pipe === 'function') {
// it's a stream
headers['Transfer-Encoding'] = 'chunked';
body = options.body;
body.on('error', err => {
if (finished) {
return;
}
finished = true;
err.type = 'FETCH';
err.sourceUrl = url;
fetchRes.emit('error', err);
});
} else {
if (options.body instanceof Buffer) {
body = options.body;
} else if (typeof options.body === 'object') {
try {
// encodeURIComponent can fail on invalid input (partial emoji etc.)
body = Buffer.from(
Object.keys(options.body)
.map(key => {
let value = options.body[key].toString().trim();
return encodeURIComponent(key) + '=' + encodeURIComponent(value);
})
.join('&')
);
} catch (E) {
if (finished) {
return;
}
finished = true;
E.type = 'FETCH';
E.sourceUrl = url;
fetchRes.emit('error', E);
return;
}
} else {
body = Buffer.from(options.body.toString().trim());
}
headers['Content-Type'] = options.contentType || 'application/x-www-form-urlencoded';
headers['Content-Length'] = body.length;
}
// if method is not provided, use POST instead of GET
method = (options.method || '').toString().trim().toUpperCase() || 'POST';
}
let req;
let reqOptions = {
method,
host: parsed.hostname,
path: parsed.path,
port: parsed.port ? parsed.port : parsed.protocol === 'https:' ? 443 : 80,
headers,
rejectUnauthorized: false,
agent: false
};
if (options.tls) {
Object.keys(options.tls).forEach(key => {
reqOptions[key] = options.tls[key];
});
}
try {
req = handler.request(reqOptions);
} catch (E) {
finished = true;
setImmediate(() => {
E.type = 'FETCH';
E.sourceUrl = url;
fetchRes.emit('error', E);
});
return fetchRes;
}
if (options.timeout) {
req.setTimeout(options.timeout, () => {
if (finished) {
return;
}
finished = true;
req.abort();
let err = new Error('Request Timeout');
err.type = 'FETCH';
err.sourceUrl = url;
fetchRes.emit('error', err);
});
}
req.on('error', err => {
if (finished) {
return;
}
finished = true;
err.type = 'FETCH';
err.sourceUrl = url;
fetchRes.emit('error', err);
});
req.on('response', res => {
let inflate;
if (finished) {
return;
}
switch (res.headers['content-encoding']) {
case 'gzip':
case 'deflate':
inflate = zlib.createUnzip();
break;
}
if (res.headers['set-cookie']) {
[].concat(res.headers['set-cookie'] || []).forEach(cookie => {
options.cookies.set(cookie, url);
});
}
if ([301, 302, 303, 307, 308].includes(res.statusCode) && res.headers.location) {
// redirect
options.redirects++;
if (options.redirects > options.maxRedirects) {
finished = true;
let err = new Error('Maximum redirect count exceeded');
err.type = 'FETCH';
err.sourceUrl = url;
fetchRes.emit('error', err);
req.abort();
return;
}
// redirect does not include POST body
options.method = 'GET';
options.body = false;
return fetch(urllib.resolve(url, res.headers.location), options);
}
fetchRes.statusCode = res.statusCode;
fetchRes.headers = res.headers;
if (res.statusCode >= 300 && !options.allowErrorResponse) {
finished = true;
let err = new Error('Invalid status code ' + res.statusCode);
err.type = 'FETCH';
err.sourceUrl = url;
fetchRes.emit('error', err);
req.abort();
return;
}
res.on('error', err => {
if (finished) {
return;
}
finished = true;
err.type = 'FETCH';
err.sourceUrl = url;
fetchRes.emit('error', err);
req.abort();
});
if (inflate) {
res.pipe(inflate).pipe(fetchRes);
inflate.on('error', err => {
if (finished) {
return;
}
finished = true;
err.type = 'FETCH';
err.sourceUrl = url;
fetchRes.emit('error', err);
req.abort();
});
} else {
res.pipe(fetchRes);
}
});
setImmediate(() => {
if (body) {
try {
if (typeof body.pipe === 'function') {
return body.pipe(req);
} else {
req.write(body);
}
} catch (err) {
finished = true;
err.type = 'FETCH';
err.sourceUrl = url;
fetchRes.emit('error', err);
return;
}
}
req.end();
});
return fetchRes;
}