341 lines
11 KiB
TypeScript
341 lines
11 KiB
TypeScript
// This is the standard build script for a kernel module.
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import * as fs from "fs"
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import {
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addContextToErr,
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b64ToBuf,
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bufToHex,
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deriveRegistryEntryID,
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entryIDToSkylink,
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generateSeedPhraseDeterministic,
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seedPhraseToSeed,
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sha512,
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taggedRegistryEntryKeys,
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} from "libskynet"
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import { generateSeedPhraseRandom, overwriteRegistryEntry, upload } from "libskynetnode"
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import read from "read"
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// Helper variables to make it easier to return empty values alongside errors.
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const nu8 = new Uint8Array(0)
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const nkp = {
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publicKey: nu8,
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secretKey: nu8,
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}
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// readFile is a wrapper for fs.readFileSync that handles the try-catch for the
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// caller.
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function readFile(fileName: string): [string, string | null] {
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try {
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let data = fs.readFileSync(fileName, "utf8")
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return [data, null]
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} catch (err) {
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return ["", "unable to read file: " + JSON.stringify(err)]
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}
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}
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// readFileBinary is a wrapper for fs.readFileSync that handles the try-catch
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// for the caller.
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function readFileBinary(fileName: string): [Uint8Array, string | null] {
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try {
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let data = fs.readFileSync(fileName, null)
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return [data, null]
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} catch (err) {
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return [nu8, "unable to read file: " + JSON.stringify(err)]
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}
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}
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// writeFile is a wrapper for fs.writeFileSync which handles the try-catch in a
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// non-exception way.
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function writeFile(fileName: string, fileData: string): string | null {
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try {
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fs.writeFileSync(fileName, fileData)
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return null
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} catch (err) {
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return "unable to write file: " + JSON.stringify(err)
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}
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}
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// hardenedSeedPhrase will take a password, harden it with 100,000 iterations
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// of hashing, and then turn it into a seed phrase.
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function hardenedSeedPhrase(password: string): [string, string | null] {
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let pw = password
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// Add some hashing iterations to the password to make it stronger.
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for (let i = 0; i < 1000000; i++) {
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let passU8 = new TextEncoder().encode(password)
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let hashIter = sha512(passU8)
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password = bufToHex(hashIter)
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}
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return generateSeedPhraseDeterministic(password)
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}
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// seedPhraseToRegistryKeys will convert a seed phrase to the set of registry
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// keys that govern the registry entry where the module is published.
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function seedPhraseToRegistryKeys(seedPhrase: string): [any, Uint8Array, string | null] {
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let [seed, errVSP] = seedPhraseToSeed(seedPhrase)
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if (errVSP !== null) {
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return [nkp, nu8, addContextToErr(errVSP, "unable to compute seed phrase")]
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}
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let [keypair, datakey, errTREK] = taggedRegistryEntryKeys(seed, "module-build", "module-key")
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if (errTREK !== null) {
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return [nkp, nu8, addContextToErr(errTREK, "unable to compute registry entry keys")]
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}
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return [keypair, datakey, null]
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}
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// seedPhraseToRegistryLink will take a seedPhrase as input and convert it to
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// the registry link for the module.
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function seedPhraseToRegistryLink(seedPhrase: string): [string, string | null] {
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let [keypair, datakey, errSPTRK] = seedPhraseToRegistryKeys(seedPhrase)
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if (errSPTRK !== null) {
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return ["", addContextToErr(errSPTRK, "unable to compute registry keys")]
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}
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let [entryID, errDREID] = deriveRegistryEntryID(keypair.publicKey, datakey)
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if (errDREID !== null) {
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return ["", addContextToErr(errDREID, "unable to compute registry entry id")]
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}
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let registryLink = entryIDToSkylink(entryID)
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return [registryLink, null]
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}
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// handlePass handles all portions of the script that occur after the password
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// has been requested. If no password needs to be requested, handlePass will be
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// called with a null input. We need to structure the code this way because the
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// password reader is async and we can only access the password when using a
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// callback.
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function handlePass(password: string) {
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try {
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// If we are running prod and the seed file does not exist, we
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// need to confirm the password and also warn the user to use a
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// secure password.
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if (!fs.existsSync(seedFile) && process.argv[2] === "prod") {
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// The file does not exist, we need to confirm the
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// password.
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console.log()
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console.log("No production entry found for module. Creating new production module...")
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console.log("If someone can guess the password, they can push arbitrary changes to your module.")
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console.log("Please use a secure password.")
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console.log()
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read({ prompt: "Confirm Password: ", silent: true }, function (err: any, confirmPassword: string) {
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if (err) {
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console.error("unable to fetch password:", err)
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process.exit(1)
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}
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if (password !== confirmPassword) {
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console.error("passwords do not match")
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process.exit(1)
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}
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password = password + moduleSalt
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handlePassConfirm(password)
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})
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} else {
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// If the seed file does exist, or if we are using dev,
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// there's no need to confirm the password but we do
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// need to pass the logic off to the handlePassConfirm
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// callback.
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password = password + moduleSalt
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handlePassConfirm(password)
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}
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} catch (err) {
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console.error("Unable to read seedFile:", err)
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process.exit(1)
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}
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}
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// handlePassConfirm handles the full script after the confirmation password
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// has been provided. If not confirmation password is needed, this function
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// will be called anyway using the unconfirmed password as input.
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function handlePassConfirm(password: string) {
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// Create the seedFile if it does not exist. For dev we just save the
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// seed to disk outright, because this is a dev build and therefore not
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// security sensitive. Also the dev seed does not get pushed to the
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// github repo.
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//
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// For prod, we use the seed to create a new seed (called the shield)
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// which allows us to verify that the developer has provided the right
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// password when deploying the module. The shield does get pushed to
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// the github repo so that the production module is the same on all
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// devices.
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if (!fs.existsSync(seedFile) && process.argv[2] !== "prod") {
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// Generate the seed phrase and write it to the file.
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let [seedPhrase, errGSP] = generateSeedPhraseRandom()
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if (errGSP !== null) {
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console.error("Unable to generate seed phrase:", errGSP)
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process.exit(1)
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}
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let errWF = writeFile(seedFile, seedPhrase)
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if (errWF !== null) {
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console.error("unable to write file:", errWF)
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process.exit(1)
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}
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} else if (!fs.existsSync(seedFile) && process.argv[2] === "prod") {
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// Generate the seed phrase.
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let [seedPhrase, errGSP] = hardenedSeedPhrase(password)
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if (errGSP !== null) {
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console.error("Unable to generate seed phrase:", errGSP)
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process.exit(1)
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}
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let [registryLink, errSPTRL] = seedPhraseToRegistryLink(seedPhrase)
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if (errSPTRL !== null) {
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console.error("Unable to generate registry link:", errSPTRL)
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process.exit(1)
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}
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// Write the registry link to the file.
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let errWF = writeFile(seedFile, registryLink)
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if (errWF !== null) {
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console.error("unable to write registry link file:", errWF)
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process.exit(1)
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}
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}
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// Load or verify the seed. If this is prod, the password is used to
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// create and verify the seed. If this is dev, we just load the seed
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// with no password.
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let seedPhrase: string
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let registryLink: string
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if (process.argv[2] === "prod") {
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// Generate the seed phrase from the password.
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let [sp, errGSP] = hardenedSeedPhrase(password)
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if (errGSP !== null) {
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console.error("Unable to generate seed phrase: ", errGSP)
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process.exit(1)
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}
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let [rl, errSPTRL] = seedPhraseToRegistryLink(sp)
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registryLink = rl
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if (errSPTRL !== null) {
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console.error("Unable to generate registry link:", errSPTRL)
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process.exit(1)
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}
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let [registryLinkVerify, errRF] = readFile(seedFile)
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if (errRF !== null) {
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console.error("unable to read seedFile")
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process.exit(1)
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}
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registryLinkVerify = registryLinkVerify.replace(/\n$/, "")
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if (registryLink !== registryLinkVerify) {
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console.error("Incorrect password")
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process.exit(1)
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}
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seedPhrase = sp
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} else {
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let [sp, errRF] = readFile(seedFile)
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if (errRF !== null) {
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console.error("unable to read seed phrase for dev command from disk")
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process.exit(1)
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}
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let [rl, errSPTRL] = seedPhraseToRegistryLink(sp)
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registryLink = rl
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if (errSPTRL !== null) {
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console.error("Unable to generate registry link:", errSPTRL)
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process.exit(1)
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}
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// Write the registry link to the module skylink dev file.
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let errWF = writeFile("build/module-skylink-dev", registryLink)
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if (errWF !== null) {
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console.error("unable to write registry link file:", errWF)
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process.exit(1)
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}
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seedPhrase = sp
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}
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// Upload the module to Skynet.
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let [distFile, errRF] = readFileBinary("dist/index.js")
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if (errRF !== null) {
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console.error("unable to read dist file for module")
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process.exit(1)
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}
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let metadata = {
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Filename: "index.js",
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}
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console.log("Uploading module...")
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upload(distFile, metadata)
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.then((result) => {
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console.log("Updating module's registry entry...")
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// Update the v2 skylink.
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let [keypair, datakey, errSPTRK] = seedPhraseToRegistryKeys(seedPhrase)
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if (errSPTRK !== null) {
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return ["", addContextToErr(errSPTRK, "unable to compute registry keys")]
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}
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let [bufLink, errBTB] = b64ToBuf(result)
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if (errBTB !== null) {
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return ["", addContextToErr(errBTB, "unable to decode skylink")]
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}
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overwriteRegistryEntry(keypair, datakey, bufLink)
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.then(() => {
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console.log("registry entry is updated")
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console.log("Immutable Link for Module:", result)
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console.log("Resolver Link for Module:", registryLink)
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})
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.catch((err: any) => {
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console.log("unable to update registry entry:", err)
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})
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})
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.catch((err) => {
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console.error("unable to upload file", err)
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process.exit(1)
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})
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}
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// Add a newline for readability.
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console.log()
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// Check for a 'dev' or 'prod' input to the script.
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if (process.argv.length !== 3) {
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console.error("need to provide either 'dev' or 'prod' as an input")
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process.exit(1)
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}
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// Create the build folder if it does not exist.
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if (!fs.existsSync("build")) {
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fs.mkdirSync("build")
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}
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// Determine the seed file.
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let seedFile: string
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if (process.argv[2] === "prod") {
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seedFile = "module-skylink"
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} else if (process.argv[2] === "dev") {
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seedFile = "build/dev-seed"
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} else {
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console.error("need to provide either 'dev' or 'prod' as an input")
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process.exit(1)
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}
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// If doing a prod deployment, check whether the salt file exists. If it does
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// not, create it.
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let moduleSalt: string
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if (!fs.existsSync(".module-salt")) {
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let [ms, errGSPR] = generateSeedPhraseRandom()
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if (errGSPR !== null) {
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console.error("unable to generate module salt:", errGSPR)
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process.exit(1)
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}
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moduleSalt = ms
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let errWF = writeFile(".module-salt", moduleSalt)
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if (errWF !== null) {
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console.error("unable to write module salt file:", errWF)
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process.exit(1)
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}
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} else {
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let [ms, errRF] = readFile(".module-salt")
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if (errRF !== null) {
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console.error("unable to read moduleSalt")
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process.exit(1)
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}
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ms = ms.replace(/\n$/, "")
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moduleSalt = ms
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}
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// Need to get a password if this is a prod build.
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if (process.argv[2] === "prod") {
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read({ prompt: "Password: ", silent: true }, function (err: any, password: string) {
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if (err) {
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console.error("unable to fetch password:", err)
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process.exit(1)
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}
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handlePass(password)
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})
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} else {
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handlePass("")
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}
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