fix buffer import and use rollup for transpiling the package.

.eslintrc.json

@@ -1,5 +1,4 @@
 {
-  "root": true,
   "parserOptions": {
     "ecmaVersion": 9,
     "ecmaFeatures": {

README.md

@@ -67,6 +67,4 @@ pool.addRelay('<url>')
 // will automatically subscribe to the all the events called with .sub above
 ```
 
-All functions expect bytearrays as hex strings and output bytearrays as hex strings.
-
 For other utils please read the source (for now).

event.js

@@ -1,7 +1,8 @@
-import {Buffer} from 'buffer'
+import Buffer from 'buffer'
-import createHash from 'create-hash'
 import * as secp256k1 from '@noble/secp256k1'
 
+import {sha256} from './utils'
+
 export function getBlankEvent() {
   return {
     kind: 255,
@@ -18,39 +19,25 @@ export function serializeEvent(evt) {
     evt.pubkey,
     evt.created_at,
     evt.kind,
-    evt.tags,
+    evt.tags || [],
     evt.content
   ])
 }
 
-export function getEventHash(event) {
+export async function getEventHash(event) {
-  let eventHash = createHash('sha256')
+  let eventHash = await sha256(Buffer.from(serializeEvent(event)))
-    .update(Buffer.from(serializeEvent(event)))
-    .digest()
   return Buffer.from(eventHash).toString('hex')
 }
 
-export function validateEvent(event) {
+export async function verifySignature(event) {
-  if (event.id !== getEventHash(event)) return false
+  return await secp256k1.schnorr.verify(
-  if (typeof event.content !== 'string') return false
+    event.sig,
-  if (typeof event.created_at !== 'number') return false
+    await getEventHash(event),
-
+    event.pubkey
-  if (!Array.isArray(event.tags)) return false
+  )
-  for (let i = 0; i < event.tags.length; i++) {
-    let tag = event.tags[i]
-    if (!Array.isArray(tag)) return false
-    for (let j = 0; j < tag.length; j++) {
-      if (typeof tag[j] === 'object') return false
-    }
-  }
-
-  return true
-}
-
-export function verifySignature(event) {
-  return secp256k1.schnorr.verify(event.sig, event.id, event.pubkey)
 }
 
 export async function signEvent(event, key) {
-  return secp256k1.schnorr.sign(getEventHash(event), key)
+  let eventHash = await getEventHash(event)
+  return await secp256k1.schnorr.sign(eventHash, key)
 }

filter.js

@@ -1,30 +0,0 @@
-export function matchFilter(filter, event) {
-  if (filter.ids && filter.ids.indexOf(event.id) === -1) return false
-  if (filter.kinds && filter.kinds.indexOf(event.kind) === -1) return false
-  if (filter.authors && filter.authors.indexOf(event.pubkey) === -1)
-    return false
-
-  for (let f in filter) {
-    if (f[0] === '#') {
-      if (
-        filter[f] &&
-        !event.tags.find(
-          ([t, v]) => t === f.slice(1) && filter[f].indexOf(v) !== -1
-        )
-      )
-        return false
-    }
-  }
-
-  if (filter.since && event.created_at < filter.since) return false
-  if (filter.until && event.created_at >= filter.until) return false
-
-  return true
-}
-
-export function matchFilters(filters, event) {
-  for (let i = 0; i < filters.length; i++) {
-    if (matchFilter(filters[i], event)) return true
-  }
-  return false
-}

index.js

@@ -1,27 +1,25 @@
-import {generatePrivateKey, getPublicKey} from './keys'
 import {relayConnect} from './relay'
 import {relayPool} from './pool'
 import {
   getBlankEvent,
   signEvent,
-  validateEvent,
   verifySignature,
   serializeEvent,
   getEventHash
 } from './event'
-import {matchFilter, matchFilters} from './filter'
+import {makeRandom32, sha256, getPublicKey} from './utils'
 
 export {
-  generatePrivateKey,
   relayConnect,
   relayPool,
   signEvent,
-  validateEvent,
   verifySignature,
   serializeEvent,
   getEventHash,
+  makeRandom32,
+  sha256,
   getPublicKey,
-  getBlankEvent,
+  getBlankEvent
-  matchFilter,
-  matchFilters
 }
+export * from './nip04'
+export * from './nip05'

keys.js

@@ -1,9 +0,0 @@
-import * as secp256k1 from '@noble/secp256k1'
-
-export function generatePrivateKey() {
-  return Buffer.from(secp256k1.utils.randomPrivateKey()).toString('hex')
-}
-
-export function getPublicKey(privateKey) {
-  return secp256k1.schnorr.getPublicKey(privateKey)
-}

nip04.js

@@ -1,14 +1,12 @@
-import aes from 'browserify-cipher'
+import Buffer from 'buffer'
-import {Buffer} from 'buffer'
-import {randomBytes} from '@noble/hashes/utils'
 import * as secp256k1 from '@noble/secp256k1'
 
 export function encrypt(privkey, pubkey, text) {
   const key = secp256k1.getSharedSecret(privkey, '02' + pubkey)
   const normalizedKey = getOnlyXFromFullSharedSecret(key)
 
-  let iv = Uint8Array.from(randomBytes(16))
+  let iv = crypto.randomFillSync(new Uint8Array(16))
-  var cipher = aes.createCipheriv(
+  var cipher = crypto.createCipheriv(
     'aes-256-cbc',
     Buffer.from(normalizedKey, 'hex'),
     iv
@@ -16,20 +14,19 @@ export function encrypt(privkey, pubkey, text) {
   let encryptedMessage = cipher.update(text, 'utf8', 'base64')
   encryptedMessage += cipher.final('base64')
 
-  return `${encryptedMessage}?iv=${Buffer.from(iv.buffer).toString('base64')}`
+  return [encryptedMessage, Buffer.from(iv.buffer).toString('base64')]
 }
 
-export function decrypt(privkey, pubkey, ciphertext) {
+export function decrypt(privkey, pubkey, ciphertext, iv) {
-  let [cip, iv] = ciphertext.split('?iv=')
+  const key = secp256k1.getSharedSecret(privkey, '02' + pubkey)
-  let key = secp256k1.getSharedSecret(privkey, '02' + pubkey)
+  const normalizedKey = getOnlyXFromFullSharedSecret(key)
-  let normalizedKey = getOnlyXFromFullSharedSecret(key)
 
-  var decipher = aes.createDecipheriv(
+  var decipher = crypto.createDecipheriv(
     'aes-256-cbc',
     Buffer.from(normalizedKey, 'hex'),
     Buffer.from(iv, 'base64')
   )
-  let decryptedMessage = decipher.update(cip, 'base64')
+  let decryptedMessage = decipher.update(ciphertext, 'base64')
   decryptedMessage += decipher.final('utf8')
 
   return decryptedMessage

nip05.js

@@ -1,32 +1,52 @@
-import fetch from 'cross-fetch'
+import Buffer from 'buffer'
+import dnsPacket from 'dns-packet'
+
+const dohProviders = [
+  'cloudflare-dns.com',
+  'fi.doh.dns.snopyta.org',
+  'basic.bravedns.com',
+  'hydra.plan9-ns1.com',
+  'doh.pl.ahadns.net',
+  'dns.flatuslifir.is',
+  'doh.dns.sb',
+  'doh.li'
+]
+
+let counter = 0
+
+export async function keyFromDomain(domain) {
+  let host = dohProviders[counter % dohProviders.length]
+
+  let buf = dnsPacket.encode({
+    type: 'query',
+    id: Math.floor(Math.random() * 65534),
+    flags: dnsPacket.RECURSION_DESIRED,
+    questions: [
+      {
+        type: 'TXT',
+        name: `_nostrkey.${domain}`
+      }
+    ]
+  })
+
+  let fetching = fetch(`https://${host}/dns-query`, {
+    method: 'POST',
+    headers: {
+      'Content-Type': 'application/dns-message',
+      'Content-Length': Buffer.byteLength(buf)
+    },
+    body: buf
+  })
+
+  counter++
 
-export async function searchDomain(domain, query = '') {
   try {
-    let res = await (
+    let response = Buffer.from(await (await fetching).arrayBuffer())
-      await fetch(`https://${domain}/.well-known/nostr.json?name=${query}`)
+    let {answers} = dnsPacket.decode(response)
-    ).json()
+    if (answers.length === 0) return null
-
+    return Buffer.from(answers[0].data[0]).toString()
-    return res.names
+  } catch (err) {
-  } catch (_) {
+    console.log(`error querying DNS for ${domain} on ${host}`, err)
-    return []
-  }
-}
-
-export async function queryName(fullname) {
-  try {
-    let [name, domain] = fullname.split('@')
-
-    if (!domain) {
-      domain = name
-      name = '_'
-    }
-
-    let res = await (
-      await fetch(`https://${domain}/.well-known/nostr.json?name=${name}`)
-    ).json()
-
-    return res.names && res.names[name]
-  } catch (_) {
     return null
   }
 }

nip06.js

@@ -1,26 +0,0 @@
-import {wordlist} from 'micro-bip39/wordlists/english'
-import {
-  generateMnemonic,
-  mnemonicToSeedSync,
-  validateMnemonic
-} from 'micro-bip39'
-import {HDKey} from 'micro-bip32'
-
-export function privateKeyFromSeed(seed) {
-  let root = HDKey.fromMasterSeed(Buffer.from(seed, 'hex'))
-  return Buffer.from(root.derive(`m/44'/1237'/0'/0/0`).privateKey).toString(
-    'hex'
-  )
-}
-
-export function seedFromWords(mnemonic) {
-  return Buffer.from(mnemonicToSeedSync(mnemonic)).toString('hex')
-}
-
-export function generateSeedWords() {
-  return generateMnemonic(wordlist)
-}
-
-export function validateWords(words) {
-  return validateMnemonic(words, wordlist)
-}

package.json

@@ -1,20 +1,18 @@
 {
   "name": "nostr-tools",
-  "version": "0.21.0",
+  "version": "0.6.3",
   "description": "Tools for making a Nostr client.",
+  "main": "dist/nostr-tools.esm.min.js",
+  "module": "dist/nostr-tools.esm.min.js",
+  "browser": "dist/nostr-tools.umd.min.js",
   "repository": {
     "type": "git",
     "url": "https://github.com/fiatjaf/nostr-tools.git"
   },
   "dependencies": {
-    "@noble/hashes": "^0.5.7",
     "@noble/secp256k1": "^1.3.0",
-    "browserify-cipher": ">=1",
+    "buffer": "^6.0.3",
-    "buffer": ">=5",
+    "dns-packet": "^5.2.4",
-    "create-hash": "^1.2.0",
-    "cross-fetch": "^3.1.4",
-    "micro-bip32": "^0.1.0",
-    "micro-bip39": "^0.1.3",
     "websocket-polyfill": "^0.0.3"
   },
   "keywords": [
@@ -30,7 +28,9 @@
     "client"
   ],
   "devDependencies": {
-    "eslint": "^8.5.0",
+    "rollup": "^2.61.1"
-    "eslint-plugin-babel": "^5.3.1"
+  },
+  "scripts": {
+    "prepublish": "rollup -c"
   }
 }

pool.js

@@ -1,20 +1,9 @@
-import {getEventHash, verifySignature, signEvent} from './event'
+import {getEventHash, signEvent} from './event'
 import {relayConnect, normalizeRelayURL} from './relay'
 
-export function relayPool() {
+export function relayPool(globalPrivateKey) {
-  var globalPrivateKey
-  var globalSigningFunction
-
-  const poolPolicy = {
-    // setting this to a number will cause events to be published to a random
-    // set of relays only, instead of publishing to all relays all the time
-    randomChoice: null,
-
-    // setting this to true will cause .publish() calls to wait until the event has
-    // been published -- or at least attempted to be published -- to all relays
-    wait: false
-  }
   const relays = {}
+  const globalSub = []
   const noticeCallbacks = []
 
   function propagateNotice(notice, relayURL) {
@@ -32,41 +21,32 @@ export function relayPool() {
         .filter(({policy}) => policy.read)
         .map(({relay}) => [
           relay.url,
-          relay.sub({filter, cb: event => cb(event, relay.url)}, id)
+          relay.sub({filter, cb: event => cb(event, relay.url)})
         ])
     )
 
     const activeCallback = cb
     const activeFilters = filter
 
-    const unsub = () => {
+    activeSubscriptions[id] = {
-      Object.values(subControllers).forEach(sub => sub.unsub())
+      sub: ({cb = activeCallback, filter = activeFilters}) =>
-      delete activeSubscriptions[id]
-    }
-    const sub = ({cb = activeCallback, filter = activeFilters}) => {
         Object.entries(subControllers).map(([relayURL, sub]) => [
           relayURL,
           sub.sub({cb, filter}, id)
-      ])
+        ]),
-      return activeSubscriptions[id]
+      addRelay: relay => {
-    }
+        subControllers[relay.url] = relay.sub({cb, filter})
-    const addRelay = relay => {
+      },
-      subControllers[relay.url] = relay.sub({cb, filter}, id)
+      removeRelay: relayURL => {
-      return activeSubscriptions[id]
-    }
-    const removeRelay = relayURL => {
         if (relayURL in subControllers) {
           subControllers[relayURL].unsub()
           if (Object.keys(subControllers).length === 0) unsub()
         }
-      return activeSubscriptions[id]
+      },
+      unsub: () => {
+        Object.values(subControllers).forEach(sub => sub.unsub())
+        delete activeSubscriptions[id]
       }
-
-    activeSubscriptions[id] = {
-      sub,
-      unsub,
-      addRelay,
-      removeRelay
     }
 
     return activeSubscriptions[id]
@@ -78,35 +58,25 @@ export function relayPool() {
     setPrivateKey(privateKey) {
       globalPrivateKey = privateKey
     },
-    registerSigningFunction(fn) {
+    async addRelay(url, policy = {read: true, write: true}) {
-      globalSigningFunction = fn
-    },
-    setPolicy(key, value) {
-      poolPolicy[key] = value
-    },
-    addRelay(url, policy = {read: true, write: true}) {
       let relayURL = normalizeRelayURL(url)
       if (relayURL in relays) return
 
-      let relay = relayConnect(url, notice => {
+      let relay = await relayConnect(url, notice => {
         propagateNotice(notice, relayURL)
       })
       relays[relayURL] = {relay, policy}
 
-      if (policy.read) {
       Object.values(activeSubscriptions).forEach(subscription =>
         subscription.addRelay(relay)
       )
-      }
 
       return relay
     },
     removeRelay(url) {
       let relayURL = normalizeRelayURL(url)
-      let data = relays[relayURL]
+      let {relay} = relays[relayURL]
-      if (!data) return
+      if (!relay) return
-
-      let {relay} = data
       Object.values(activeSubscriptions).forEach(subscription =>
         subscription.removeRelay(relay)
       )
@@ -120,76 +90,32 @@ export function relayPool() {
       let index = noticeCallbacks.indexOf(cb)
       if (index !== -1) noticeCallbacks.splice(index, 1)
     },
-    async publish(event, statusCallback) {
+    async publish(event, statusCallback = (status, relayURL) => {}) {
-      event.id = getEventHash(event)
-
       if (!event.sig) {
         event.tags = event.tags || []
 
         if (globalPrivateKey) {
+          event.id = await getEventHash(event)
           event.sig = await signEvent(event, globalPrivateKey)
-        } else if (globalSigningFunction) {
-          event.sig = await globalSigningFunction(event)
-          if (!event.sig) {
-            // abort here
-            return
-          } else {
-            // check
-            if (!(await verifySignature(event)))
-              throw new Error(
-                'signature provided by custom signing function is invalid.'
-              )
-          }
         } else {
           throw new Error(
-            "can't publish unsigned event. either sign this event beforehand, provide a signing function or pass a private key while initializing this relay pool so it can be signed automatically."
+            "can't publish unsigned event. either sign this event beforehand or pass a private key while initializing this relay pool so it can be signed automatically."
           )
         }
       }
 
-      let writeable = Object.values(relays)
+      Object.values(relays)
         .filter(({policy}) => policy.write)
-        .sort(() => Math.random() - 0.5) // random
+        .map(async ({relay}) => {
-
-      let maxTargets = poolPolicy.randomChoice
-        ? poolPolicy.randomChoice
-        : writeable.length
-
-      let successes = 0
-
-      if (poolPolicy.wait) {
-        for (let i = 0; i < writeable.length; i++) {
-          let {relay} = writeable[i]
-
           try {
-            await new Promise(async (resolve, reject) => {
+            await relay.publish(event, status =>
-              try {
+              statusCallback(status, relay.url)
-                await relay.publish(event, status => {
+            )
-                  if (statusCallback) statusCallback(status, relay.url)
-                  resolve()
-                })
           } catch (err) {
-                if (statusCallback) statusCallback(-1, relay.url)
+            statusCallback(-1, relay.url)
           }
         })
 
-            successes++
-            if (successes >= maxTargets) {
-              break
-            }
-          } catch (err) {
-            /***/
-          }
-        }
-      } else {
-        writeable.forEach(async ({relay}) => {
-          let callback = statusCallback
-            ? status => statusCallback(status, relay.url)
-            : null
-          relay.publish(event, callback)
-        })
-      }
-
       return event
     }
   }

relay.js

@@ -1,22 +1,19 @@
-/* global WebSocket */
-
 import 'websocket-polyfill'
 
-import {verifySignature, validateEvent} from './event'
+import {verifySignature} from './event'
-import {matchFilters} from './filter'
 
 export function normalizeRelayURL(url) {
-  let [host, ...qs] = url.trim().split('?')
+  let [host, ...qs] = url.split('?')
   if (host.slice(0, 4) === 'http') host = 'ws' + host.slice(4)
   if (host.slice(0, 2) !== 'ws') host = 'wss://' + host
   if (host.length && host[host.length - 1] === '/') host = host.slice(0, -1)
   return [host, ...qs].join('?')
 }
 
-export function relayConnect(url, onNotice = () => {}, onError = () => {}) {
+export function relayConnect(url, onNotice) {
   url = normalizeRelayURL(url)
 
-  var ws, resolveOpen, untilOpen, wasClosed
+  var ws, resolveOpen, untilOpen
   var openSubs = {}
   let attemptNumber = 1
   let nextAttemptSeconds = 1
@@ -37,26 +34,19 @@ export function relayConnect(url, onNotice = () => {}, onError = () => {}) {
       resolveOpen()
 
       // restablish old subscriptions
-      if (wasClosed) {
-        wasClosed = false
       for (let channel in openSubs) {
         let filters = openSubs[channel]
         let cb = channels[channel]
         sub({cb, filter: filters}, channel)
       }
     }
-    }
+    ws.onerror = () => {
-    ws.onerror = err => {
       console.log('error connecting to relay', url)
-      onError(err)
     }
     ws.onclose = () => {
       resetOpenState()
       attemptNumber++
-      nextAttemptSeconds += attemptNumber ** 3
+      nextAttemptSeconds += attemptNumber
-      if (nextAttemptSeconds > 14400) {
-        nextAttemptSeconds = 14400 // 4 hours
-      }
       console.log(
         `relay ${url} connection closed. reconnecting in ${nextAttemptSeconds} seconds.`
       )
@@ -65,8 +55,6 @@ export function relayConnect(url, onNotice = () => {}, onError = () => {}) {
           connect()
         } catch (err) {}
       }, nextAttemptSeconds * 1000)
-
-      wasClosed = true
     }
 
     ws.onmessage = async e => {
@@ -92,14 +80,13 @@ export function relayConnect(url, onNotice = () => {}, onError = () => {}) {
           let channel = data[1]
           let event = data[2]
 
-          if (
+          if (await verifySignature(event)) {
-            validateEvent(event) &&
+            if (channels[channel]) {
-            verifySignature(event) &&
-            channels[channel] &&
-            matchFilters(openSubs[channel], event)
-          ) {
               channels[channel](event)
             }
+          } else {
+            console.warn('got event with invalid signature from ' + url, event)
+          }
           return
         }
       }
@@ -148,26 +135,19 @@ export function relayConnect(url, onNotice = () => {}, onError = () => {}) {
   return {
     url,
     sub,
-    async publish(event, statusCallback) {
+    async publish(event, statusCallback = status => {}) {
       try {
         await trySend(['EVENT', event])
-        if (statusCallback) {
         statusCallback(0)
-          let {unsub} = sub(
+        let {unsub} = relay.sub({
-            {
           cb: () => {
             statusCallback(1)
-                unsub()
-                clearTimeout(willUnsub)
           },
           filter: {id: event.id}
-            },
+        })
-            `monitor-${event.id.slice(0, 5)}`
+        setTimeout(unsub, 5000)
-          )
-          let willUnsub = setTimeout(unsub, 5000)
-        }
       } catch (err) {
-        if (statusCallback) statusCallback(-1)
+        statusCallback(-1)
       }
     },
     close() {

rollup.config.js

@@ -0,0 +1,16 @@
+import pkg from './package.json'
+
+export default {
+  input: 'index.js',
+  output: [
+    {
+      name: 'nostrtools',
+      file: pkg.browser,
+      format: 'umd'
+    },
+    {
+      file: pkg.module,
+      format: 'es'
+    }
+  ]
+}

utils.js

@@ -0,0 +1,6 @@
+import * as secp256k1 from '@noble/secp256k1'
+
+export const makeRandom32 = () => secp256k1.utils.randomPrivateKey()
+export const sha256 = m => secp256k1.utils.sha256(Uint8Array.from(m))
+export const getPublicKey = privateKey =>
+  secp256k1.schnorr.getPublicKey(privateKey)