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61 lines
2.0 KiB
61 lines
2.0 KiB
const urlUtil = require('url')
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const extension = require('extensionizer')
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const resolveEnsToIpfsContentId = require('./resolver.js')
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const supportedTopLevelDomains = ['eth']
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module.exports = setupEnsIpfsResolver
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function setupEnsIpfsResolver ({ provider }) {
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// install listener
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const urlPatterns = supportedTopLevelDomains.map(tld => `*://*.${tld}/*`)
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extension.webRequest.onErrorOccurred.addListener(webRequestDidFail, { urls: urlPatterns })
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// return api object
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return {
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// uninstall listener
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remove () {
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extension.webRequest.onErrorOccurred.removeListener(webRequestDidFail)
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},
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}
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async function webRequestDidFail (details) {
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const { tabId, url } = details
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// ignore requests that are not associated with tabs
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if (tabId === -1) return
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// parse ens name
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const urlData = urlUtil.parse(url)
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const { hostname: name, path, search } = urlData
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const domainParts = name.split('.')
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const topLevelDomain = domainParts[domainParts.length - 1]
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// if unsupported TLD, abort
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if (!supportedTopLevelDomains.includes(topLevelDomain)) return
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// otherwise attempt resolve
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attemptResolve({ tabId, name, path, search })
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}
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async function attemptResolve ({ tabId, name, path, search }) {
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extension.tabs.update(tabId, { url: `loading.html` })
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let url = `https://manager.ens.domains/name/${name}`
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try {
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const {type, hash} = await resolveEnsToIpfsContentId({ provider, name })
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if (type === 'ipfs-ns') {
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const resolvedUrl = `https://gateway.ipfs.io/ipfs/${hash}${path}${search || ''}`
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try {
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// check if ipfs gateway has result
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const response = await fetch(resolvedUrl, { method: 'HEAD' })
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if (response.status === 200) url = resolvedUrl
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} catch (err) {
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console.warn(err)
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}
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} else if (type === 'swarm-ns') {
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url = `https://swarm-gateways.net/bzz:/${hash}${path}${search || ''}`
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}
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} catch (err) {
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console.warn(err)
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} finally {
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extension.tabs.update(tabId, { url })
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}
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}
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}
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