86 lines
1.6 KiB
JavaScript
86 lines
1.6 KiB
JavaScript
|
'use strict';
|
||
|
|
|
||
|
|
var Hashcash = require('./hashcash.js');
|
||
|
|
var _sites = {};
|
||
|
|
|
||
|
|
module.exports = async function (opts) {
|
||
|
|
if (!opts.headers) {
|
||
|
|
opts.headers = {};
|
||
|
|
}
|
||
|
|
|
||
|
|
if (opts.json) {
|
||
|
|
if (true === opts.json) {
|
||
|
|
opts.body = JSON.stringify(opts.body);
|
||
|
|
} else {
|
||
|
|
opts.body = JSON.stringify(opts.json);
|
||
|
|
}
|
||
|
|
if (!opts.headers['Content-Type'] && !opts.headers['content-type']) {
|
||
|
|
opts.headers['Content-Type'] = 'application/json';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!opts.mode) {
|
||
|
|
opts.mode = 'cors';
|
||
|
|
}
|
||
|
|
|
||
|
|
var url = new URL(opts.url);
|
||
|
|
if (!_sites[url.hostname]) {
|
||
|
|
_sites[url.hostname] = { nonces: [] };
|
||
|
|
}
|
||
|
|
|
||
|
|
var site = _sites[url.hostname];
|
||
|
|
var hc = site.hashcashChallenge;
|
||
|
|
if (hc) {
|
||
|
|
delete site.hashcashChallenge;
|
||
|
|
site.hashcash = await Hashcash.solve(hc);
|
||
|
|
}
|
||
|
|
if (site.hashcash) {
|
||
|
|
opts.headers.Hashcash = site.hashcash;
|
||
|
|
}
|
||
|
|
|
||
|
|
var response = await window.fetch(opts.url, opts);
|
||
|
|
var headerNames = response.headers.keys();
|
||
|
|
var hs = {};
|
||
|
|
var h;
|
||
|
|
while (true) {
|
||
|
|
h = headerNames.next();
|
||
|
|
if (h.done) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
hs[h.value] = response.headers.get(h.value);
|
||
|
|
}
|
||
|
|
|
||
|
|
var body;
|
||
|
|
if (hs['content-type'].includes('application/json')) {
|
||
|
|
body = await response.json();
|
||
|
|
} else {
|
||
|
|
body = await response.text();
|
||
|
|
try {
|
||
|
|
body = JSON.parse(body);
|
||
|
|
} catch (e) {
|
||
|
|
// ignore
|
||
|
|
}
|
||
|
|
}
|
||
|
|
var resp = {};
|
||
|
|
|
||
|
|
resp.body = body;
|
||
|
|
resp.headers = hs;
|
||
|
|
resp.toJSON = function () {
|
||
|
|
return {
|
||
|
|
headers: hs,
|
||
|
|
body: body
|
||
|
|
};
|
||
|
|
};
|
||
|
|
|
||
|
|
if (resp.headers['hashcash-challenge']) {
|
||
|
|
_sites[url.hostname].hashcashChallenge =
|
||
|
|
resp.headers['hashcash-challenge'];
|
||
|
|
}
|
||
|
|
if (resp.headers.nonce) {
|
||
|
|
site.nonces.push(resp.headers.nonce);
|
||
|
|
}
|
||
|
|
|
||
|
|
console.log(resp);
|
||
|
|
return resp;
|
||
|
|
};
|