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metamask-extension/app/scripts/lib/ens-ipfs/setup.js

92 lines
2.9 KiB
JavaScript

import extension from 'extensionizer';
import getFetchWithTimeout from '../../../../shared/modules/fetch-with-timeout';
import { SECOND } from '../../../../shared/constants/time';
import resolveEnsToIpfsContentId from './resolver';
const fetchWithTimeout = getFetchWithTimeout(SECOND * 30);
const supportedTopLevelDomains = ['eth'];
export default function setupEnsIpfsResolver({
provider,
getCurrentChainId,
getIpfsGateway,
}) {
// install listener
const urlPatterns = supportedTopLevelDomains.map((tld) => `*://*.${tld}/*`);
extension.webRequest.onErrorOccurred.addListener(webRequestDidFail, {
urls: urlPatterns,
types: ['main_frame'],
});
// return api object
return {
// uninstall listener
remove() {
extension.webRequest.onErrorOccurred.removeListener(webRequestDidFail);
},
};
async function webRequestDidFail(details) {
const { tabId, url } = details;
// ignore requests that are not associated with tabs
// only attempt ENS resolution on mainnet
if (tabId === -1 || getCurrentChainId() !== '0x1') {
return;
}
// parse ens name
const { hostname: name, pathname, search, hash: fragment } = new URL(url);
const domainParts = name.split('.');
const topLevelDomain = domainParts[domainParts.length - 1];
// if unsupported TLD, abort
if (!supportedTopLevelDomains.includes(topLevelDomain)) {
return;
}
// otherwise attempt resolve
attemptResolve({ tabId, name, pathname, search, fragment });
}
async function attemptResolve({ tabId, name, pathname, search, fragment }) {
const ipfsGateway = getIpfsGateway();
extension.tabs.update(tabId, { url: `loading.html` });
let url = `https://app.ens.domains/name/${name}`;
try {
const { type, hash } = await resolveEnsToIpfsContentId({
provider,
name,
});
if (type === 'ipfs-ns' || type === 'ipns-ns') {
const resolvedUrl = `https://${hash}.${type.slice(
0,
4,
)}.${ipfsGateway}${pathname}${search || ''}${fragment || ''}`;
try {
// check if ipfs gateway has result
const response = await fetchWithTimeout(resolvedUrl, {
method: 'HEAD',
});
if (response.status === 200) {
url = resolvedUrl;
}
} catch (err) {
console.warn(err);
}
} else if (type === 'swarm-ns') {
url = `https://swarm-gateways.net/bzz:/${hash}${pathname}${
search || ''
}${fragment || ''}`;
} else if (type === 'onion' || type === 'onion3') {
url = `http://${hash}.onion${pathname}${search || ''}${fragment || ''}`;
} else if (type === 'zeronet') {
url = `http://127.0.0.1:43110/${hash}${pathname}${search || ''}${
fragment || ''
}`;
}
} catch (err) {
console.warn(err);
} finally {
extension.tabs.update(tabId, { url });
}
}
}