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config.js
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config.js
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import memoize from 'p-memoize'
import toUri from 'multiaddr-to-uri'
import { createAsyncResourceBundle, createSelector } from 'redux-bundler'
const LOCAL_HOSTNAMES = ['127.0.0.1', '[::1]', '0.0.0.0', '[::]']
const bundle = createAsyncResourceBundle({
name: 'config',
staleAfter: 60000,
persist: false,
checkIfOnline: false,
getPromise: async ({ getIpfs, store }) => {
const rawConf = await getIpfs().config.getAll()
let conf
if (Buffer.isBuffer(rawConf)) {
conf = rawConf.toString()
} else {
conf = JSON.stringify(rawConf, null, '\t')
}
const config = JSON.parse(conf)
const publicGateway = store.selectPublicGateway()
const url = getURLFromAddress('Gateway', config) || publicGateway
// Normalize local hostnames to localhost
// to leverage subdomain gateway, if present
// https://github.com/ipfs-shipyard/ipfs-webui/issues/1490
const gw = new URL(url)
if (LOCAL_HOSTNAMES.includes(gw.hostname)) {
gw.hostname = 'localhost'
const localUrl = gw.toString().replace(/\/+$/, '') // no trailing slashes
if (await checkIfSubdomainGatewayUrlIsAccessible(localUrl)) {
store.doSetAvailableGateway(localUrl)
return conf
}
}
if (!await checkIfGatewayUrlIsAccessible(url)) {
store.doSetAvailableGateway(publicGateway)
}
// stringy json for quick compares
return conf
}
})
// derive the object from the stringy json
bundle.selectConfigObject = createSelector(
'selectConfig',
(configStr) => JSON.parse(configStr)
)
bundle.selectApiUrl = createSelector(
'selectConfigObject',
'selectPublicGateway',
(config, publicGateway) => getURLFromAddress('API', config) || publicGateway
)
bundle.selectGatewayUrl = createSelector(
'selectConfigObject',
'selectPublicGateway',
(config, publicGateway) => getURLFromAddress('Gateway', config) || publicGateway
)
bundle.selectAvailableGatewayUrl = createSelector(
'selectAvailableGateway',
'selectGatewayUrl',
(availableGateway, gatewayUrl) => availableGateway || gatewayUrl
)
bundle.selectBootstrapPeers = createSelector(
'selectConfigObject',
(config) => config && config.Bootstrap
)
// TODO: this is a work-around for IPFS companion blocking the config API
// see: https://github.com/ipfs-shipyard/ipfs-companion/issues/454
bundle.selectIsConfigBlocked = createSelector(
'selectConfigRaw',
({ errorType }) => errorType === 'Access to config.get API is globally blocked for window.ipfs'
)
// Fetch the config if we don't have it or it's more than `staleAfter` ms old
bundle.reactConfigFetch = createSelector(
'selectConfigShouldUpdate',
'selectIpfsReady',
(shouldUpdate, ipfsReady) => {
if (shouldUpdate && ipfsReady) {
return { actionCreator: 'doFetchConfig' }
}
}
)
function getURLFromAddress (name, config) {
if (!config) return null
try {
const address = Array.isArray(config.Addresses[name])
? config.Addresses[name][0]
: config.Addresses[name]
const url = toUri(address, { assumeHttp: true })
if (new URL(url).port === 0) throw Error('port set to 0, not deterministic')
return url
} catch (error) {
console.log(`Failed to get url from config at Addresses.${name}`, error)
return null
}
}
const checkIfGatewayUrlIsAccessible = memoize(async (url) => {
try {
const { status } = await fetch(
`${url}/ipfs/bafkqae2xmvwgg33nmuqhi3zajfiemuzahiwss`
)
return status === 200
} catch (e) {
console.error(`Unable to use the gateway at ${url}. The public gateway will be used as a fallback`, e)
return false
}
})
// Separate test is necessary to see if subdomain mode is possible,
// because some browser+OS combinations won't resolve them:
// https://github.com/ipfs/go-ipfs/issues/7527
const checkIfSubdomainGatewayUrlIsAccessible = memoize(async (url) => {
try {
url = new URL(url)
url.hostname = `bafkqae2xmvwgg33nmuqhi3zajfiemuzahiwss.ipfs.${url.hostname}`
const { status } = await fetch(url.toString())
return status === 200
} catch (e) {
console.error(`Unable to use the subdomain gateway at ${url}. Regular gateway will be used as a fallback`, e)
return false
}
})
export default bundle