--prompt-sec for getting a secret key from a prompt.

.eslintrc.json

@@ -1,147 +0,0 @@
-{
-  "parserOptions": {
-    "ecmaVersion": 2020,
-    "ecmaFeatures": {
-      "jsx": true
-    },
-    "sourceType": "module",
-    "allowImportExportEverywhere": false
-  },
-
-  "env": {
-    "es6": true,
-    "node": true
-  },
-
-  "plugins": [
-    "react",
-    "babel"
-  ],
-
-  "globals": {
-    "document": false,
-    "navigator": false,
-    "window": false,
-    "location": false,
-    "URL": false,
-    "URLSearchParams": false,
-    "fetch": false,
-    "EventSource": false,
-    "localStorage": false,
-    "sessionStorage": false
-  },
-
-  "rules": {
-    "react/jsx-uses-vars": 2,
-    "react/jsx-no-undef": 2,
-    "react/jsx-uses-react": 2,
-    "accessor-pairs": 2,
-    "arrow-spacing": [2, { "before": true, "after": true }],
-    "block-spacing": [2, "always"],
-    "brace-style": [2, "1tbs", { "allowSingleLine": true }],
-    "comma-dangle": 0,
-    "comma-spacing": [2, { "before": false, "after": true }],
-    "comma-style": [2, "last"],
-    "constructor-super": 2,
-    "curly": [0, "multi-line"],
-    "dot-location": [2, "property"],
-    "eol-last": 2,
-    "eqeqeq": [2, "allow-null"],
-    "generator-star-spacing": [2, { "before": true, "after": true }],
-    "handle-callback-err": [2, "^(err|error)$" ],
-    "indent": 0,
-    "jsx-quotes": [2, "prefer-double"],
-    "key-spacing": [2, { "beforeColon": false, "afterColon": true }],
-    "keyword-spacing": [2, { "before": true, "after": true }],
-    "new-cap": 0,
-    "new-parens": 0,
-    "no-array-constructor": 2,
-    "no-caller": 2,
-    "no-class-assign": 2,
-    "no-cond-assign": 2,
-    "no-const-assign": 2,
-    "no-control-regex": 0,
-    "no-debugger": 0,
-    "no-delete-var": 2,
-    "no-dupe-args": 2,
-    "no-dupe-class-members": 2,
-    "no-dupe-keys": 2,
-    "no-duplicate-case": 2,
-    "no-empty-character-class": 2,
-    "no-empty-pattern": 2,
-    "no-eval": 0,
-    "no-ex-assign": 2,
-    "no-extend-native": 2,
-    "no-extra-bind": 2,
-    "no-extra-boolean-cast": 2,
-    "no-extra-parens": [2, "functions"],
-    "no-fallthrough": 2,
-    "no-floating-decimal": 2,
-    "no-func-assign": 2,
-    "no-implied-eval": 2,
-    "no-inner-declarations": [0, "functions"],
-    "no-invalid-regexp": 2,
-    "no-irregular-whitespace": 2,
-    "no-iterator": 2,
-    "no-label-var": 2,
-    "no-labels": [2, { "allowLoop": false, "allowSwitch": false }],
-    "no-lone-blocks": 2,
-    "no-mixed-spaces-and-tabs": 2,
-    "no-multi-spaces": 2,
-    "no-multi-str": 2,
-    "no-multiple-empty-lines": [2, { "max": 2 }],
-    "no-native-reassign": 2,
-    "no-negated-in-lhs": 2,
-    "no-new": 0,
-    "no-new-func": 2,
-    "no-new-object": 2,
-    "no-new-require": 2,
-    "no-new-symbol": 2,
-    "no-new-wrappers": 2,
-    "no-obj-calls": 2,
-    "no-octal": 2,
-    "no-octal-escape": 2,
-    "no-path-concat": 0,
-    "no-proto": 2,
-    "no-redeclare": 2,
-    "no-regex-spaces": 2,
-    "no-return-assign": 0,
-    "no-self-assign": 2,
-    "no-self-compare": 2,
-    "no-sequences": 2,
-    "no-shadow-restricted-names": 2,
-    "no-spaced-func": 2,
-    "no-sparse-arrays": 2,
-    "no-this-before-super": 2,
-    "no-throw-literal": 2,
-    "no-trailing-spaces": 2,
-    "no-undef": 2,
-    "no-undef-init": 2,
-    "no-unexpected-multiline": 2,
-    "no-unneeded-ternary": [2, { "defaultAssignment": false }],
-    "no-unreachable": 2,
-    "no-unused-vars": [2, { "vars": "local", "args": "none", "varsIgnorePattern": "^_"}],
-    "no-useless-call": 2,
-    "no-useless-constructor": 2,
-    "no-with": 2,
-    "one-var": [0, { "initialized": "never" }],
-    "operator-linebreak": [2, "after", { "overrides": { "?": "before", ":": "before" } }],
-    "padded-blocks": [2, "never"],
-    "quotes": [2, "single", { "avoidEscape": true, "allowTemplateLiterals": true }],
-    "semi": [2, "never"],
-    "semi-spacing": [2, { "before": false, "after": true }],
-    "space-before-blocks": [2, "always"],
-    "space-before-function-paren": 0,
-    "space-in-parens": [2, "never"],
-    "space-infix-ops": 2,
-    "space-unary-ops": [2, { "words": true, "nonwords": false }],
-    "spaced-comment": 0,
-    "template-curly-spacing": [2, "never"],
-    "use-isnan": 2,
-    "valid-typeof": 2,
-    "wrap-iife": [2, "any"],
-    "yield-star-spacing": [2, "both"],
-    "yoda": 0,
-    "no-unsafe-optional-chaning": 0
-  }
-}

.github/workflows/release-cli.yml

@@ -0,0 +1,42 @@
+name: build cli for all platforms
+
+on:
+  push:
+    tags:
+      - '*'
+
+permissions:
+  contents: write
+
+jobs:
+  make-release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/create-release@latest
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ github.ref }}
+          release_name: ${{ github.ref }}
+  build-all-for-all:
+    runs-on: ubuntu-latest
+    needs:
+      - make-release
+    strategy:
+      matrix:
+        goos: [linux, freebsd, darwin, windows]
+        goarch: [amd64, arm64]
+        exclude:
+          - goarch: arm64
+            goos: windows
+    steps:
+      - uses: actions/checkout@v3
+      - uses: wangyoucao577/go-release-action@v1.40
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          goos: ${{ matrix.goos }}
+          goarch: ${{ matrix.goarch }}
+          overwrite: true
+          md5sum: false
+          sha256sum: false
+          compress_assets: false

.gitignore

@@ -1,3 +1,9 @@
-node_modules
-public/app.js
+target
+.bsp
+globals.bundle.js
 yarn.lock
+node_modules
+project/project
+.metals
+.bloop
+project/metals.sbt

.prettierrc.yaml

@@ -1,9 +0,0 @@
-arrowParens: avoid
-bracketSpacing: false
-jsxBracketSameLine: false
-printWidth: 80
-proseWrap: preserve
-semi: false
-singleQuote: true
-trailingComma: none
-useTabs: false

.scalafmt.conf

@@ -0,0 +1,2 @@
+version = 3.5.8
+runner.dialect = scala3

LICENSE

@@ -0,0 +1,24 @@
+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or
+distribute this software, either in source code form or as a compiled
+binary, for any purpose, commercial or non-commercial, and by any
+means.
+
+In jurisdictions that recognize copyright laws, the author or authors
+of this software dedicate any and all copyright interest in the
+software to the public domain. We make this dedication for the benefit
+of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of
+relinquishment in perpetuity of all present and future rights to this
+software under copyright law.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+For more information, please refer to <https://unlicense.org>

README.md

@@ -1 +1,83 @@
-[![Netlify Status](https://api.netlify.com/api/v1/badges/2593eb9b-7f06-4e36-9448-4dc144245ba1/deploy-status)](https://app.netlify.com/sites/nostr-army-knife/deploys)
+# nak, the nostr army knife
+
+install with `go install github.com/fiatjaf/nak@latest` or
+[download a binary](https://github.com/fiatjaf/nak/releases).
+
+## what can you do with it?
+
+take a look at the help text that comes in it to learn all possibilities, but here are some:
+
+### make a nostr event signed with the default key (`01`)
+
+```shell
+~> nak event
+{"id":"53443506e7d09e55b922a2369b80f926007a8a8a8ea5f09df1db59fe1993335e","pubkey":"79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798","created_at":1698632644,"kind":1,"tags":[],"content":"hello from the nostr army knife","sig":"4bdb609c975b2b61338c2ff4c7ce91d4afe74bea4ed1601a62e1fd125bd4c0ae6e0166cca96e5cfb7e0f50583eb6a0dd0b66072566299b6007742db56278010c"}
+```
+
+### make a nostr event with custom content and tags, sign it with a different key and publish it to two relays
+```shell
+~> nak event --sec 02 -c 'good morning' --tag t=gm wss://nostr-pub.wellorder.net wss://relay.damus.io
+{"id":"e20978737ab7cd36eca300a65f11738176123f2e0c23054544b18fe493e2aa1a","pubkey":"c6047f9441ed7d6d3045406e95c07cd85c778e4b8cef3ca7abac09b95c709ee5","created_at":1698632753,"kind":1,"tags":[["t","gm"]],"content":"good morning","sig":"5687c1a97066c349cb3bde0c0719fd1652a13403ba6aca7557b646307ee6718528cd86989db08bf6a7fd04bea0b0b87c1dd1b78c2d21b80b80eebab7f40b8916"}
+publishing to wss://nostr-pub.wellorder.net... success.
+publishing to wss://relay.damus.io... success.
+```
+
+### query a bunch of relays for a tag with a limit of 2 for each, print their content
+```shell
+~> nak req -k 1 -t t=gm -l 2 wss://nostr.mom wss://nostr.wine wss://nostr-pub.wellorder.net | jq .content
+"#GM, you sovereign savage #freeple of the #nostrverse. Let's cause some #nostroversy. "
+"ITM slaves!\n#gm https://image.nostr.build/cbbcdf80bfc302a6678ecf9387c87d87deca3e0e288a12e262926c34feb3f6aa.jpg "
+"good morning"
+"The problem is to start, but along the way it's fixed #GM ☀️"
+"Activando modo zen…\n\n#GM #Nostr #Hispano"
+```
+
+### decode a nip19 note1 code, add a relay hint, encode it back to nevent1
+```shell
+~> nak decode note1ttnnrw78wy0hs5fa59yj03yvcu2r4y0xetg9vh7uf4em39n604vsyp37f2 | jq -r .id | nak encode nevent -r wss://nostr.zbd.gg
+nevent1qqs94ee3h0rhz8mc2y76zjf8cjxvw9p6j8nv45zktlwy6uacjea86kgpzfmhxue69uhkummnw3ezu7nzvshxwec8zw8h7
+~> nak decode nevent1qqs94ee3h0rhz8mc2y76zjf8cjxvw9p6j8nv45zktlwy6uacjea86kgpzfmhxue69uhkummnw3ezu7nzvshxwec8zw8h7
+{
+  "id": "5ae731bbc7711f78513da14927c48cc7143a91e6cad0565fdc4d73b8967a7d59",
+  "relays": [
+    "wss://nostr.zbd.gg"
+  ]
+}
+```
+
+### fetch an event using relay and author hints automatically from a nevent1 code, pretty-print it
+```shell
+nak fetch nevent1qqs2e3k48vtrkzjm8vvyzcmsmkf58unrxtq2k4h5yspay6vhcqm4wqcpz9mhxue69uhkummnw3ezuamfdejj7q3ql2vyh47mk2p0qlsku7hg0vn29faehy9hy34ygaclpn66ukqp3afqxpqqqqqqz7ttjyq | jq
+{
+  "id": "acc6d53b163b0a5b3b18416370dd9343f26332c0ab56f42403d26997c0375703",
+  "pubkey": "fa984bd7dbb282f07e16e7ae87b26a2a7b9b90b7246a44771f0cf5ae58018f52",
+  "created_at": 1697370933,
+  "kind": 1,
+  "tags": [],
+  "content": "`q` tags = a kind 1 that wanted to be a kind:6 but fell short\n\n🥁",
+  "sig": "b5b63d7c8491a4a0517df2c58151665c583abc6cd31fd50b957bf8fefc8e55c87c922cbdcb50888cb9f1c03c26ab5c02c1dccc14b46b78e1e16c60094f2358da"
+}
+```
+
+### republish an event from one relay to multiple others
+```shell
+~> nak req -i e20978737ab7cd36eca300a65f11738176123f2e0c23054544b18fe493e2aa1a wss://nostr.wine/ wss://nostr-pub.wellorder.net | nak event wss://nostr.wine wss://offchain.pub wss://public.relaying.io wss://eden.nostr.land wss://atlas.nostr.land wss://relayable.org
+{"id":"e20978737ab7cd36eca300a65f11738176123f2e0c23054544b18fe493e2aa1a","pubkey":"c6047f9441ed7d6d3045406e95c07cd85c778e4b8cef3ca7abac09b95c709ee5","created_at":1698632753,"kind":1,"tags":[["t","gm"]],"content":"good morning","sig":"5687c1a97066c349cb3bde0c0719fd1652a13403ba6aca7557b646307ee6718528cd86989db08bf6a7fd04bea0b0b87c1dd1b78c2d21b80b80eebab7f40b8916"}
+publishing to wss://nostr.wine... failed: msg: blocked: not an active paid member
+publishing to wss://offchain.pub... success.
+publishing to wss://public.relaying.io... success.
+publishing to wss://eden.nostr.land... failed: msg: blocked: not on white-list
+publishing to wss://atlas.nostr.land... failed: msg: blocked: not on white-list
+publishing to wss://relayable.org... success.
+```
+
+### verify if an event is good
+```shell
+~> echo '{"content":"hello world","created_at":1698923350,"id":"05bd99d54cb835f327e0092c4275ee44c7ff51219eff417c19f70c9e2c53ad5a","kind":1,"pubkey":"79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798","sig":"0a04a296321ed933858577f36fb2fb9a0933e966f9ee32b539493f5a4d00120891b1ca9152ebfbc04fb403bdaa7c73f415e7c4954e55726b4b4fa8cebf008cd6","tags":[]}' | nak verify
+invalid .id, expected 05bd99d54cb835f427e0092c4275ee44c7ff51219eff417c19f70c9e2c53ad5a, got 05bd99d54cb835f327e0092c4275ee44c7ff51219eff417c19f70c9e2c53ad5a
+```
+
+### fetch all quoted events by a given pubkey in their last 100 notes
+```shell
+nak req -l 100 -k 1 -a 2edbcea694d164629854a52583458fd6d965b161e3c48b57d3aff01940558884 wss://relay.damus.io | jq -r '.content | match("nostr:((note1|nevent1)[a-z0-9]+)";"g") | .captures[0].string' | nak decode | jq -cr '{ids: [.id]}' | nak req wss://relay.damus.io
+```

app.jsx

@@ -1,59 +0,0 @@
-import React, {useState, useEffect} from 'react'
-import {render} from 'react-dom'
-
-import Nothing from './handlers/Nothing'
-import EventSigning from './handlers/EventSigning'
-import KeyHandling from './handlers/KeyHandling'
-
-const handlers = [EventSigning, KeyHandling, Nothing]
-
-function App() {
-  let [value, setValue] = useState(localStorage.getItem('value'))
-
-  useEffect(() => {
-    localStorage.setItem('value', value)
-  }, [value])
-
-  let Result
-  for (let i = 0; i < handlers.length; i++) {
-    let alt = handlers[i]
-    if (alt.match(value)) {
-      Result = alt
-      break
-    }
-  }
-
-  return (
-    <main style={{fontFamily: 'monospace'}}>
-      <div
-        style={{
-          width: '90%',
-          margin: 'auto'
-        }}
-      >
-        <h1>nostr army knife</h1>
-        paste something nostric
-        <textarea
-          value={value}
-          onChange={e => setValue(e.target.value)}
-          style={{
-            padding: '7px',
-            width: '100%',
-            minHeight: '200px'
-          }}
-        />
-      </div>
-      <hr style={{margin: '18px 0'}} />
-      <div
-        style={{
-          width: '90%',
-          margin: 'auto'
-        }}
-      >
-        <Result value={value} />
-      </div>
-    </main>
-  )
-}
-
-render(<App />, document.getElementById('app'))

build.js

@@ -1,26 +0,0 @@
-#!/usr/bin/env node
-
-const esbuild = require('esbuild')
-const alias = require('esbuild-plugin-alias')
-const nodeGlobals = require('@esbuild-plugins/node-globals-polyfill').default
-
-const prod = process.argv.indexOf('prod') !== -1
-
-esbuild
-  .build({
-    bundle: true,
-    entryPoints: ['app.jsx'],
-    outdir: 'public',
-    plugins: [
-      alias({
-        stream: require.resolve('readable-stream')
-      }),
-      nodeGlobals({buffer: true})
-    ],
-    sourcemap: prod ? false : 'inline',
-    define: {
-      window: 'self',
-      global: 'self'
-    }
-  })
-  .then(() => console.log('build success.'))

components/item.jsx

@@ -1,19 +0,0 @@
-import React from 'react'
-
-export default function Item({label, hint, children}) {
-  return (
-    <div
-      style={{
-        marginBottom: '9px',
-        whiteSpace: 'pre-wrap',
-        wordWrap: 'break-word',
-        wordBreak: 'break-all'
-      }}
-    >
-      <b data-wenk={hint} data-wenk-pos="right">
-        {label}:{' '}
-      </b>
-      {children}
-    </div>
-  )
-}

count.go

@@ -0,0 +1,147 @@
+package main
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"strings"
+
+	"github.com/nbd-wtf/go-nostr"
+	"github.com/urfave/cli/v2"
+)
+
+var count = &cli.Command{
+	Name:        "count",
+	Usage:       "generates encoded COUNT messages and optionally use them to talk to relays",
+	Description: `outputs a NIP-45 request (the flags are mostly the same as 'nak req').`,
+	Flags: []cli.Flag{
+		&cli.StringSliceFlag{
+			Name:     "author",
+			Aliases:  []string{"a"},
+			Usage:    "only accept events from these authors (pubkey as hex)",
+			Category: CATEGORY_FILTER_ATTRIBUTES,
+		},
+		&cli.IntSliceFlag{
+			Name:     "kind",
+			Aliases:  []string{"k"},
+			Usage:    "only accept events with these kind numbers",
+			Category: CATEGORY_FILTER_ATTRIBUTES,
+		},
+		&cli.StringSliceFlag{
+			Name:     "tag",
+			Aliases:  []string{"t"},
+			Usage:    "takes a tag like -t e=<id>, only accept events with these tags",
+			Category: CATEGORY_FILTER_ATTRIBUTES,
+		},
+		&cli.StringSliceFlag{
+			Name:     "e",
+			Usage:    "shortcut for --tag e=<value>",
+			Category: CATEGORY_FILTER_ATTRIBUTES,
+		},
+		&cli.StringSliceFlag{
+			Name:     "p",
+			Usage:    "shortcut for --tag p=<value>",
+			Category: CATEGORY_FILTER_ATTRIBUTES,
+		},
+		&cli.IntFlag{
+			Name:     "since",
+			Aliases:  []string{"s"},
+			Usage:    "only accept events newer than this (unix timestamp)",
+			Category: CATEGORY_FILTER_ATTRIBUTES,
+		},
+		&cli.IntFlag{
+			Name:     "until",
+			Aliases:  []string{"u"},
+			Usage:    "only accept events older than this (unix timestamp)",
+			Category: CATEGORY_FILTER_ATTRIBUTES,
+		},
+		&cli.IntFlag{
+			Name:     "limit",
+			Aliases:  []string{"l"},
+			Usage:    "only accept up to this number of events",
+			Category: CATEGORY_FILTER_ATTRIBUTES,
+		},
+	},
+	ArgsUsage: "[relay...]",
+	Action: func(c *cli.Context) error {
+		filter := nostr.Filter{}
+
+		if authors := c.StringSlice("author"); len(authors) > 0 {
+			filter.Authors = authors
+		}
+		if ids := c.StringSlice("id"); len(ids) > 0 {
+			filter.IDs = ids
+		}
+		if kinds := c.IntSlice("kind"); len(kinds) > 0 {
+			filter.Kinds = kinds
+		}
+
+		tags := make([][]string, 0, 5)
+		for _, tagFlag := range c.StringSlice("tag") {
+			spl := strings.Split(tagFlag, "=")
+			if len(spl) == 2 && len(spl[0]) == 1 {
+				tags = append(tags, spl)
+			} else {
+				return fmt.Errorf("invalid --tag '%s'", tagFlag)
+			}
+		}
+		for _, etag := range c.StringSlice("e") {
+			tags = append(tags, []string{"e", etag})
+		}
+		for _, ptag := range c.StringSlice("p") {
+			tags = append(tags, []string{"p", ptag})
+		}
+		if len(tags) > 0 {
+			filter.Tags = make(nostr.TagMap)
+			for _, tag := range tags {
+				if _, ok := filter.Tags[tag[0]]; !ok {
+					filter.Tags[tag[0]] = make([]string, 0, 3)
+				}
+				filter.Tags[tag[0]] = append(filter.Tags[tag[0]], tag[1])
+			}
+		}
+
+		if since := c.Int("since"); since != 0 {
+			ts := nostr.Timestamp(since)
+			filter.Since = &ts
+		}
+		if until := c.Int("until"); until != 0 {
+			ts := nostr.Timestamp(until)
+			filter.Until = &ts
+		}
+		if limit := c.Int("limit"); limit != 0 {
+			filter.Limit = limit
+		}
+
+		relays := c.Args().Slice()
+		successes := 0
+		failures := make([]error, 0, len(relays))
+		if len(relays) > 0 {
+			for _, relayUrl := range relays {
+				relay, err := nostr.RelayConnect(c.Context, relayUrl)
+				if err != nil {
+					failures = append(failures, err)
+					continue
+				}
+				count, err := relay.Count(c.Context, nostr.Filters{filter})
+				if err != nil {
+					failures = append(failures, err)
+					continue
+				}
+				fmt.Printf("%s: %d\n", relay.URL, count)
+				successes++
+			}
+			if successes == 0 {
+				return errors.Join(failures...)
+			}
+		} else {
+			// no relays given, will just print the filter
+			var result string
+			j, _ := json.Marshal([]any{"COUNT", "nak", filter})
+			result = string(j)
+			fmt.Println(result)
+		}
+
+		return nil
+	},
+}

decode.go

@@ -0,0 +1,111 @@
+package main
+
+import (
+	"encoding/hex"
+	"encoding/json"
+	"fmt"
+	"strings"
+
+	"github.com/nbd-wtf/go-nostr"
+	"github.com/nbd-wtf/go-nostr/nip19"
+	sdk "github.com/nbd-wtf/nostr-sdk"
+	"github.com/urfave/cli/v2"
+)
+
+var decode = &cli.Command{
+	Name:  "decode",
+	Usage: "decodes nip19, nip21, nip05 or hex entities",
+	Description: `example usage:
+		nak decode npub1uescmd5krhrmj9rcura833xpke5eqzvcz5nxjw74ufeewf2sscxq4g7chm
+		nak decode nevent1qqs29yet5tp0qq5xu5qgkeehkzqh5qu46739axzezcxpj4tjlkx9j7gpr4mhxue69uhkummnw3ez6ur4vgh8wetvd3hhyer9wghxuet5sh59ud
+		nak decode nprofile1qqsrhuxx8l9ex335q7he0f09aej04zpazpl0ne2cgukyawd24mayt8gpz4mhxue69uhk2er9dchxummnw3ezumrpdejqz8thwden5te0dehhxarj94c82c3wwajkcmr0wfjx2u3wdejhgqgcwaehxw309aex2mrp0yhxummnw3exzarf9e3k7mgnp0sh5
+		nak decode nsec1jrmyhtjhgd9yqalps8hf9mayvd58852gtz66m7tqpacjedkp6kxq4dyxsr`,
+	Flags: []cli.Flag{
+		&cli.BoolFlag{
+			Name:    "id",
+			Aliases: []string{"e"},
+			Usage:   "return just the event id, if applicable",
+		},
+		&cli.BoolFlag{
+			Name:    "pubkey",
+			Aliases: []string{"p"},
+			Usage:   "return just the pubkey, if applicable",
+		},
+	},
+	ArgsUsage: "<npub | nprofile | nip05 | nevent | naddr | nsec>",
+	Action: func(c *cli.Context) error {
+		for input := range getStdinLinesOrFirstArgument(c) {
+			if strings.HasPrefix(input, "nostr:") {
+				input = input[6:]
+			}
+
+			var decodeResult DecodeResult
+			if b, err := hex.DecodeString(input); err == nil {
+				if len(b) == 64 {
+					decodeResult.HexResult.PossibleTypes = []string{"sig"}
+					decodeResult.HexResult.Signature = hex.EncodeToString(b)
+				} else if len(b) == 32 {
+					decodeResult.HexResult.PossibleTypes = []string{"pubkey", "private_key", "event_id"}
+					decodeResult.HexResult.ID = hex.EncodeToString(b)
+					decodeResult.HexResult.PrivateKey = hex.EncodeToString(b)
+					decodeResult.HexResult.PublicKey = hex.EncodeToString(b)
+				} else {
+					lineProcessingError(c, "hex string with invalid number of bytes: %d", len(b))
+					continue
+				}
+			} else if evp := sdk.InputToEventPointer(input); evp != nil {
+				decodeResult = DecodeResult{EventPointer: evp}
+			} else if pp := sdk.InputToProfile(c.Context, input); pp != nil {
+				decodeResult = DecodeResult{ProfilePointer: pp}
+			} else if prefix, value, err := nip19.Decode(input); err == nil && prefix == "naddr" {
+				ep := value.(nostr.EntityPointer)
+				decodeResult = DecodeResult{EntityPointer: &ep}
+			} else if prefix, value, err := nip19.Decode(input); err == nil && prefix == "nsec" {
+				decodeResult.PrivateKey.PrivateKey = value.(string)
+				decodeResult.PrivateKey.PublicKey, _ = nostr.GetPublicKey(value.(string))
+			} else {
+				lineProcessingError(c, "couldn't decode input '%s': %s", input, err)
+				continue
+			}
+
+			fmt.Println(decodeResult.JSON())
+
+		}
+
+		exitIfLineProcessingError(c)
+		return nil
+	},
+}
+
+type DecodeResult struct {
+	*nostr.EventPointer
+	*nostr.ProfilePointer
+	*nostr.EntityPointer
+	HexResult struct {
+		PossibleTypes []string `json:"possible_types"`
+		PublicKey     string   `json:"pubkey,omitempty"`
+		ID            string   `json:"event_id,omitempty"`
+		PrivateKey    string   `json:"private_key,omitempty"`
+		Signature     string   `json:"sig,omitempty"`
+	}
+	PrivateKey struct {
+		nostr.ProfilePointer
+		PrivateKey string `json:"private_key"`
+	}
+}
+
+func (d DecodeResult) JSON() string {
+	var j []byte
+	if d.EventPointer != nil {
+		j, _ = json.MarshalIndent(d.EventPointer, "", "  ")
+	} else if d.ProfilePointer != nil {
+		j, _ = json.MarshalIndent(d.ProfilePointer, "", "  ")
+	} else if d.EntityPointer != nil {
+		j, _ = json.MarshalIndent(d.EntityPointer, "", "  ")
+	} else if len(d.HexResult.PossibleTypes) > 0 {
+		j, _ = json.MarshalIndent(d.HexResult, "", "  ")
+	} else if d.PrivateKey.PrivateKey != "" {
+		j, _ = json.MarshalIndent(d.PrivateKey, "", "  ")
+	}
+	return string(j)
+}

encode.go

@@ -0,0 +1,232 @@
+package main
+
+import (
+	"fmt"
+
+	"github.com/nbd-wtf/go-nostr/nip19"
+	"github.com/urfave/cli/v2"
+)
+
+var encode = &cli.Command{
+	Name:  "encode",
+	Usage: "encodes notes and other stuff to nip19 entities",
+	Description: `example usage:
+		nak encode npub <pubkey-hex>
+		nak encode nprofile <pubkey-hex>
+		nak encode nprofile --relay <relay-url> <pubkey-hex>
+		nak encode nevent <event-id>
+		nak encode nevent --author <pubkey-hex> --relay <relay-url> --relay <other-relay> <event-id>
+		nak encode nsec <privkey-hex>`,
+	Before: func(c *cli.Context) error {
+		if c.Args().Len() < 1 {
+			return fmt.Errorf("expected more than 1 argument.")
+		}
+		return nil
+	},
+	Subcommands: []*cli.Command{
+		{
+			Name:  "npub",
+			Usage: "encode a hex public key into bech32 'npub' format",
+			Action: func(c *cli.Context) error {
+				for target := range getStdinLinesOrFirstArgument(c) {
+					if err := validate32BytesHex(target); err != nil {
+						lineProcessingError(c, "invalid public key: %s", target, err)
+						continue
+					}
+
+					if npub, err := nip19.EncodePublicKey(target); err == nil {
+						fmt.Println(npub)
+					} else {
+						return err
+					}
+				}
+
+				exitIfLineProcessingError(c)
+				return nil
+			},
+		},
+		{
+			Name:  "nsec",
+			Usage: "encode a hex private key into bech32 'nsec' format",
+			Action: func(c *cli.Context) error {
+				for target := range getStdinLinesOrFirstArgument(c) {
+					if err := validate32BytesHex(target); err != nil {
+						lineProcessingError(c, "invalid private key: %s", target, err)
+						continue
+					}
+
+					if npub, err := nip19.EncodePrivateKey(target); err == nil {
+						fmt.Println(npub)
+					} else {
+						return err
+					}
+				}
+
+				exitIfLineProcessingError(c)
+				return nil
+			},
+		},
+		{
+			Name:  "nprofile",
+			Usage: "generate profile codes with attached relay information",
+			Flags: []cli.Flag{
+				&cli.StringSliceFlag{
+					Name:    "relay",
+					Aliases: []string{"r"},
+					Usage:   "attach relay hints to nprofile code",
+				},
+			},
+			Action: func(c *cli.Context) error {
+				for target := range getStdinLinesOrFirstArgument(c) {
+					if err := validate32BytesHex(target); err != nil {
+						lineProcessingError(c, "invalid public key: %s", target, err)
+						continue
+					}
+
+					relays := c.StringSlice("relay")
+					if err := validateRelayURLs(relays); err != nil {
+						return err
+					}
+
+					if npub, err := nip19.EncodeProfile(target, relays); err == nil {
+						fmt.Println(npub)
+					} else {
+						return err
+					}
+				}
+
+				exitIfLineProcessingError(c)
+				return nil
+			},
+		},
+		{
+			Name:  "nevent",
+			Usage: "generate event codes with optionally attached relay information",
+			Flags: []cli.Flag{
+				&cli.StringSliceFlag{
+					Name:    "relay",
+					Aliases: []string{"r"},
+					Usage:   "attach relay hints to nevent code",
+				},
+				&cli.StringFlag{
+					Name:  "author",
+					Usage: "attach an author pubkey as a hint to the nevent code",
+				},
+			},
+			Action: func(c *cli.Context) error {
+				for target := range getStdinLinesOrFirstArgument(c) {
+					if err := validate32BytesHex(target); err != nil {
+						lineProcessingError(c, "invalid event id: %s", target, err)
+						continue
+					}
+
+					author := c.String("author")
+					if author != "" {
+						if err := validate32BytesHex(author); err != nil {
+							return err
+						}
+					}
+
+					relays := c.StringSlice("relay")
+					if err := validateRelayURLs(relays); err != nil {
+						return err
+					}
+
+					if npub, err := nip19.EncodeEvent(target, relays, author); err == nil {
+						fmt.Println(npub)
+					} else {
+						return err
+					}
+				}
+
+				exitIfLineProcessingError(c)
+				return nil
+			},
+		},
+		{
+			Name:  "naddr",
+			Usage: "generate codes for NIP-33 parameterized replaceable events",
+			Flags: []cli.Flag{
+				&cli.StringFlag{
+					Name:     "identifier",
+					Aliases:  []string{"d"},
+					Usage:    "the \"d\" tag identifier of this replaceable event -- can also be read from stdin",
+					Required: true,
+				},
+				&cli.StringFlag{
+					Name:     "pubkey",
+					Usage:    "pubkey of the naddr author",
+					Aliases:  []string{"p"},
+					Required: true,
+				},
+				&cli.Int64Flag{
+					Name:     "kind",
+					Aliases:  []string{"k"},
+					Usage:    "kind of referred replaceable event",
+					Required: true,
+				},
+				&cli.StringSliceFlag{
+					Name:    "relay",
+					Aliases: []string{"r"},
+					Usage:   "attach relay hints to naddr code",
+				},
+			},
+			Action: func(c *cli.Context) error {
+				for d := range getStdinLinesOrBlank() {
+					pubkey := c.String("pubkey")
+					if err := validate32BytesHex(pubkey); err != nil {
+						return err
+					}
+
+					kind := c.Int("kind")
+					if kind < 30000 || kind >= 40000 {
+						return fmt.Errorf("kind must be between 30000 and 39999, as per NIP-16, got %d", kind)
+					}
+
+					if d == "" {
+						d = c.String("identifier")
+						if d == "" {
+							lineProcessingError(c, "\"d\" tag identifier can't be empty")
+							continue
+						}
+					}
+
+					relays := c.StringSlice("relay")
+					if err := validateRelayURLs(relays); err != nil {
+						return err
+					}
+
+					if npub, err := nip19.EncodeEntity(pubkey, kind, d, relays); err == nil {
+						fmt.Println(npub)
+					} else {
+						return err
+					}
+				}
+
+				exitIfLineProcessingError(c)
+				return nil
+			},
+		},
+		{
+			Name:  "note",
+			Usage: "generate note1 event codes (not recommended)",
+			Action: func(c *cli.Context) error {
+				for target := range getStdinLinesOrFirstArgument(c) {
+					if err := validate32BytesHex(target); err != nil {
+						lineProcessingError(c, "invalid event id: %s", target, err)
+						continue
+					}
+
+					if note, err := nip19.EncodeNote(target); err == nil {
+						fmt.Println(note)
+					} else {
+						return err
+					}
+				}
+
+				exitIfLineProcessingError(c)
+				return nil
+			},
+		},
+	},
+}

event.go

@@ -0,0 +1,241 @@
+package main
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"os"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/bgentry/speakeasy"
+	"github.com/mailru/easyjson"
+	"github.com/nbd-wtf/go-nostr"
+	"github.com/nbd-wtf/go-nostr/nip19"
+	"github.com/nbd-wtf/go-nostr/nson"
+	"github.com/urfave/cli/v2"
+)
+
+const CATEGORY_EVENT_FIELDS = "EVENT FIELDS"
+
+var event = &cli.Command{
+	Name:  "event",
+	Usage: "generates an encoded event and either prints it or sends it to a set of relays",
+	Description: `outputs an event built with the flags. if one or more relays are given as arguments, an attempt is also made to publish the event to these relays.
+
+example:
+		nak event -c hello wss://nos.lol
+		nak event -k 3 -p 3bf0c63fcb93463407af97a5e5ee64fa883d107ef9e558472c4eb9aaaefa459d
+
+if an event -- or a partial event -- is given on stdin, the flags can be used to optionally modify it. if it is modified it is rehashed and resigned, otherwise it is just returned as given, but that can be used to just publish to relays.
+
+example:
+		echo '{"id":"a889df6a387419ff204305f4c2d296ee328c3cd4f8b62f205648a541b4554dfb","pubkey":"c6047f9441ed7d6d3045406e95c07cd85c778e4b8cef3ca7abac09b95c709ee5","created_at":1698623783,"kind":1,"tags":[],"content":"hello from the nostr army knife","sig":"84876e1ee3e726da84e5d195eb79358b2b3eaa4d9bd38456fde3e8a2af3f1cd4cda23f23fda454869975b3688797d4c66e12f4c51c1b43c6d2997c5e61865661"}' | nak event wss://offchain.pub
+		echo '{"tags": [["t", "spam"]]}' | nak event -c 'this is spam'
+`,
+	Flags: []cli.Flag{
+		&cli.StringFlag{
+			Name:        "sec",
+			Usage:       "secret key to sign the event, as hex or nsec",
+			DefaultText: "the key '1'",
+			Value:       "0000000000000000000000000000000000000000000000000000000000000001",
+		},
+		&cli.BoolFlag{
+			Name:  "prompt-sec",
+			Usage: "prompt the user to paste a hex or nsec with which to sign the event",
+		},
+		&cli.BoolFlag{
+			Name:  "envelope",
+			Usage: "print the event enveloped in a [\"EVENT\", ...] message ready to be sent to a relay",
+		},
+		&cli.BoolFlag{
+			Name:  "nson",
+			Usage: "encode the event using NSON",
+		},
+		&cli.IntFlag{
+			Name:        "kind",
+			Aliases:     []string{"k"},
+			Usage:       "event kind",
+			DefaultText: "1",
+			Value:       0,
+			Category:    CATEGORY_EVENT_FIELDS,
+		},
+		&cli.StringFlag{
+			Name:        "content",
+			Aliases:     []string{"c"},
+			Usage:       "event content",
+			DefaultText: "hello from the nostr army knife",
+			Value:       "",
+			Category:    CATEGORY_EVENT_FIELDS,
+		},
+		&cli.StringSliceFlag{
+			Name:     "tag",
+			Aliases:  []string{"t"},
+			Usage:    "sets a tag field on the event, takes a value like -t e=<id>",
+			Category: CATEGORY_EVENT_FIELDS,
+		},
+		&cli.StringSliceFlag{
+			Name:     "e",
+			Usage:    "shortcut for --tag e=<value>",
+			Category: CATEGORY_EVENT_FIELDS,
+		},
+		&cli.StringSliceFlag{
+			Name:     "p",
+			Usage:    "shortcut for --tag p=<value>",
+			Category: CATEGORY_EVENT_FIELDS,
+		},
+		&cli.StringFlag{
+			Name:        "created-at",
+			Aliases:     []string{"time", "ts"},
+			Usage:       "unix timestamp value for the created_at field",
+			DefaultText: "now",
+			Value:       "",
+			Category:    CATEGORY_EVENT_FIELDS,
+		},
+	},
+	ArgsUsage: "[relay...]",
+	Action: func(c *cli.Context) error {
+		// gather the secret key first
+		sec := c.String("sec")
+		if c.Bool("prompt-sec") {
+			if isPiped() {
+				return fmt.Errorf("can't prompt for a secret key when processing data from a pipe, try again without --prompt-sec")
+			}
+			var err error
+			sec, err = speakeasy.FAsk(os.Stderr, "type your secret key as nsec or hex: ")
+			if err != nil {
+				return fmt.Errorf("failed to get secret key: %w", err)
+			}
+		}
+		if strings.HasPrefix(sec, "nsec1") {
+			_, hex, err := nip19.Decode(sec)
+			if err != nil {
+				return fmt.Errorf("invalid nsec: %w", err)
+			}
+			sec = hex.(string)
+		}
+		if len(sec) > 64 {
+			return fmt.Errorf("invalid secret key: too large")
+		}
+		sec = strings.Repeat("0", 64-len(sec)) + sec // left-pad
+		if err := validate32BytesHex(sec); err != nil {
+			return fmt.Errorf("invalid secret key")
+		}
+
+		// then process input and generate events
+		for stdinEvent := range getStdinLinesOrBlank() {
+			evt := nostr.Event{
+				Tags: make(nostr.Tags, 0, 3),
+			}
+
+			mustRehashAndResign := false
+			if stdinEvent != "" {
+				if err := json.Unmarshal([]byte(stdinEvent), &evt); err != nil {
+					lineProcessingError(c, "invalid event received from stdin: %s", err)
+					continue
+				}
+			}
+
+			if kind := c.Int("kind"); kind != 0 {
+				evt.Kind = kind
+				mustRehashAndResign = true
+			} else if evt.Kind == 0 {
+				evt.Kind = 1
+				mustRehashAndResign = true
+			}
+
+			if content := c.String("content"); content != "" {
+				evt.Content = content
+				mustRehashAndResign = true
+			} else if evt.Content == "" && evt.Kind == 1 {
+				evt.Content = "hello from the nostr army knife"
+				mustRehashAndResign = true
+			}
+
+			tags := make(nostr.Tags, 0, 5)
+			for _, tagFlag := range c.StringSlice("tag") {
+				// tags are in the format key=value
+				spl := strings.Split(tagFlag, "=")
+				if len(spl) == 2 && len(spl[0]) > 0 {
+					tag := nostr.Tag{spl[0]}
+					// tags may also contain extra elements separated with a ";"
+					spl2 := strings.Split(spl[1], ";")
+					tag = append(tag, spl2...)
+					// ~
+					tags = append(tags, tag)
+				}
+			}
+			for _, etag := range c.StringSlice("e") {
+				tags = append(tags, []string{"e", etag})
+				mustRehashAndResign = true
+			}
+			for _, ptag := range c.StringSlice("p") {
+				tags = append(tags, []string{"p", ptag})
+				mustRehashAndResign = true
+			}
+			if len(tags) > 0 {
+				for _, tag := range tags {
+					evt.Tags = append(evt.Tags, tag)
+				}
+				mustRehashAndResign = true
+			}
+
+			if createdAt := c.String("created-at"); createdAt != "" {
+				ts := time.Now()
+				if createdAt != "now" {
+					if v, err := strconv.ParseInt(createdAt, 10, 64); err != nil {
+						return fmt.Errorf("failed to parse timestamp '%s': %w", createdAt, err)
+					} else {
+						ts = time.Unix(v, 0)
+					}
+				}
+				evt.CreatedAt = nostr.Timestamp(ts.Unix())
+				mustRehashAndResign = true
+			} else if evt.CreatedAt == 0 {
+				evt.CreatedAt = nostr.Now()
+				mustRehashAndResign = true
+			}
+
+			if evt.Sig == "" || mustRehashAndResign {
+				if err := evt.Sign(sec); err != nil {
+					return fmt.Errorf("error signing with provided key: %w", err)
+				}
+			}
+
+			relays := c.Args().Slice()
+			if len(relays) > 0 {
+				fmt.Println(evt.String())
+				for _, url := range relays {
+					fmt.Fprintf(os.Stderr, "publishing to %s... ", url)
+					if relay, err := nostr.RelayConnect(c.Context, url); err != nil {
+						fmt.Fprintf(os.Stderr, "failed to connect: %s\n", err)
+					} else {
+						ctx, cancel := context.WithTimeout(c.Context, 10*time.Second)
+						defer cancel()
+						if status, err := relay.Publish(ctx, evt); err != nil {
+							fmt.Fprintf(os.Stderr, "failed: %s\n", err)
+						} else {
+							fmt.Fprintf(os.Stderr, "%s.\n", status)
+						}
+					}
+				}
+			} else {
+				var result string
+				if c.Bool("envelope") {
+					j, _ := json.Marshal([]any{"EVENT", evt})
+					result = string(j)
+				} else if c.Bool("nson") {
+					result, _ = nson.Marshal(&evt)
+				} else {
+					j, _ := easyjson.Marshal(&evt)
+					result = string(j)
+				}
+				fmt.Println(result)
+			}
+		}
+
+		exitIfLineProcessingError(c)
+		return nil
+	},
+}

fetch.go

@@ -0,0 +1,94 @@
+package main
+
+import (
+	"fmt"
+
+	"github.com/nbd-wtf/go-nostr"
+	"github.com/nbd-wtf/go-nostr/nip19"
+	sdk "github.com/nbd-wtf/nostr-sdk"
+	"github.com/urfave/cli/v2"
+)
+
+var fetch = &cli.Command{
+	Name:  "fetch",
+	Usage: "fetches events related to the given nip19 code from the included relay hints",
+	Description: `example usage:
+        nak fetch nevent1qqsxrwm0hd3s3fddh4jc2574z3xzufq6qwuyz2rvv3n087zvym3dpaqprpmhxue69uhhqatzd35kxtnjv4kxz7tfdenju6t0xpnej4
+        echo npub1h8spmtw9m2huyv6v2j2qd5zv956z2zdugl6mgx02f2upffwpm3nqv0j4ps | nak fetch --relay wss://relay.nostr.band`,
+	Flags: []cli.Flag{
+		&cli.StringSliceFlag{
+			Name:    "relay",
+			Aliases: []string{"r"},
+			Usage:   "also use these relays to fetch from",
+		},
+	},
+	ArgsUsage: "[nip19code]",
+	Action: func(c *cli.Context) error {
+		for code := range getStdinLinesOrFirstArgument(c) {
+			filter := nostr.Filter{}
+
+			prefix, value, err := nip19.Decode(code)
+			if err != nil {
+				lineProcessingError(c, "failed to decode: %s", err)
+				continue
+			}
+
+			relays := c.StringSlice("relay")
+			if err := validateRelayURLs(relays); err != nil {
+				return err
+			}
+			var authorHint string
+
+			switch prefix {
+			case "nevent":
+				v := value.(nostr.EventPointer)
+				filter.IDs = append(filter.IDs, v.ID)
+				if v.Author != "" {
+					authorHint = v.Author
+				}
+				relays = v.Relays
+			case "naddr":
+				v := value.(nostr.EntityPointer)
+				filter.Tags = nostr.TagMap{"d": []string{v.Identifier}}
+				filter.Kinds = append(filter.Kinds, v.Kind)
+				filter.Authors = append(filter.Authors, v.PublicKey)
+				authorHint = v.PublicKey
+				relays = v.Relays
+			case "nprofile":
+				v := value.(nostr.ProfilePointer)
+				filter.Authors = append(filter.Authors, v.PublicKey)
+				filter.Kinds = append(filter.Kinds, 0)
+				authorHint = v.PublicKey
+				relays = v.Relays
+			case "npub":
+				v := value.(string)
+				filter.Authors = append(filter.Authors, v)
+				filter.Kinds = append(filter.Kinds, 0)
+				authorHint = v
+			}
+
+			pool := nostr.NewSimplePool(c.Context)
+			if authorHint != "" {
+				relayList := sdk.FetchRelaysForPubkey(c.Context, pool, authorHint,
+					"wss://purplepag.es", "wss://offchain.pub", "wss://public.relaying.io")
+				for _, relayListItem := range relayList {
+					if relayListItem.Outbox {
+						relays = append(relays, relayListItem.URL)
+					}
+				}
+			}
+
+			if len(relays) == 0 {
+				lineProcessingError(c, "no relay hints found")
+				continue
+			}
+
+			for ie := range pool.SubManyEose(c.Context, relays, nostr.Filters{filter}) {
+				fmt.Println(ie.Event)
+			}
+		}
+
+		exitIfLineProcessingError(c)
+		return nil
+	},
+}

go.mod

@@ -0,0 +1,40 @@
+module github.com/fiatjaf/nak
+
+go 1.21
+
+toolchain go1.21.0
+
+require (
+	github.com/bgentry/speakeasy v0.1.0
+	github.com/mailru/easyjson v0.7.7
+	github.com/nbd-wtf/go-nostr v0.25.3
+	github.com/nbd-wtf/nostr-sdk v0.0.2
+	github.com/urfave/cli/v2 v2.25.3
+)
+
+require (
+	github.com/btcsuite/btcd/btcec/v2 v2.3.2 // indirect
+	github.com/btcsuite/btcd/btcutil v1.1.3 // indirect
+	github.com/btcsuite/btcd/chaincfg/chainhash v1.0.2 // indirect
+	github.com/cespare/xxhash/v2 v2.2.0 // indirect
+	github.com/cpuguy83/go-md2man/v2 v2.0.2 // indirect
+	github.com/decred/dcrd/crypto/blake256 v1.0.1 // indirect
+	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0 // indirect
+	github.com/dgraph-io/ristretto v0.1.1 // indirect
+	github.com/dustin/go-humanize v1.0.0 // indirect
+	github.com/fiatjaf/eventstore v0.1.0 // indirect
+	github.com/gobwas/httphead v0.1.0 // indirect
+	github.com/gobwas/pool v0.2.1 // indirect
+	github.com/gobwas/ws v1.2.0 // indirect
+	github.com/golang/glog v1.0.0 // indirect
+	github.com/josharian/intern v1.0.0 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/puzpuzpuz/xsync/v2 v2.5.1 // indirect
+	github.com/russross/blackfriday/v2 v2.1.0 // indirect
+	github.com/tidwall/gjson v1.14.4 // indirect
+	github.com/tidwall/match v1.1.1 // indirect
+	github.com/tidwall/pretty v1.2.0 // indirect
+	github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673 // indirect
+	golang.org/x/exp v0.0.0-20230425010034-47ecfdc1ba53 // indirect
+	golang.org/x/sys v0.8.0 // indirect
+)

go.sum

@@ -0,0 +1,167 @@
+github.com/aead/siphash v1.0.1/go.mod h1:Nywa3cDsYNNK3gaciGTWPwHt0wlpNV15vwmswBAUSII=
+github.com/bgentry/speakeasy v0.1.0 h1:ByYyxL9InA1OWqxJqqp2A5pYHUrCiAL6K3J+LKSsQkY=
+github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
+github.com/btcsuite/btcd v0.20.1-beta/go.mod h1:wVuoA8VJLEcwgqHBwHmzLRazpKxTv13Px/pDuV7OomQ=
+github.com/btcsuite/btcd v0.22.0-beta.0.20220111032746-97732e52810c/go.mod h1:tjmYdS6MLJ5/s0Fj4DbLgSbDHbEqLJrtnHecBFkdz5M=
+github.com/btcsuite/btcd v0.23.0/go.mod h1:0QJIIN1wwIXF/3G/m87gIwGniDMDQqjVn4SZgnFpsYY=
+github.com/btcsuite/btcd/btcec/v2 v2.1.0/go.mod h1:2VzYrv4Gm4apmbVVsSq5bqf1Ec8v56E48Vt0Y/umPgA=
+github.com/btcsuite/btcd/btcec/v2 v2.1.3/go.mod h1:ctjw4H1kknNJmRN4iP1R7bTQ+v3GJkZBd6mui8ZsAZE=
+github.com/btcsuite/btcd/btcec/v2 v2.3.2 h1:5n0X6hX0Zk+6omWcihdYvdAlGf2DfasC0GMf7DClJ3U=
+github.com/btcsuite/btcd/btcec/v2 v2.3.2/go.mod h1:zYzJ8etWJQIv1Ogk7OzpWjowwOdXY1W/17j2MW85J04=
+github.com/btcsuite/btcd/btcutil v1.0.0/go.mod h1:Uoxwv0pqYWhD//tfTiipkxNfdhG9UrLwaeswfjfdF0A=
+github.com/btcsuite/btcd/btcutil v1.1.0/go.mod h1:5OapHB7A2hBBWLm48mmw4MOHNJCcUBTwmWH/0Jn8VHE=
+github.com/btcsuite/btcd/btcutil v1.1.3 h1:xfbtw8lwpp0G6NwSHb+UE67ryTFHJAiNuipusjXSohQ=
+github.com/btcsuite/btcd/btcutil v1.1.3/go.mod h1:UR7dsSJzJUfMmFiiLlIrMq1lS9jh9EdCV7FStZSnpi0=
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handlers/EventSigning.jsx

@@ -1,103 +0,0 @@
-import React, {useState} from 'react'
-import useComputedState from 'use-computed-state'
-import {
-  getPublicKey,
-  getEventHash,
-  serializeEvent,
-  verifySignature,
-  signEvent
-} from 'nostr-tools'
-
-import Item from '../components/item'
-
-export default function EventSigning({value}) {
-  let evt = JSON.parse(value)
-  let [privateKey, setPrivateKey] = useState(
-    'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa'
-  )
-  let privateKeyIsValid = useComputedState(
-    () => privateKey.match(/^[a-f0-9]{64}$/),
-    [privateKey]
-  )
-  let publicKey = useComputedState(
-    () => (privateKeyIsValid ? getPublicKey(privateKey) : null),
-    [privateKeyIsValid]
-  )
-  let signature = useComputedState(async () => {
-    if (evt.sig) return null
-
-    try {
-      evt.pubkey = publicKey
-      return await signEvent(evt, privateKey)
-    } catch (err) {
-      return null
-    }
-  }, [value, privateKey])
-  let eventHash = useComputedState(() => getEventHash(evt), [value])
-  let isValidHash = useComputedState(
-    () => evt.id === eventHash,
-    [value, eventHash]
-  )
-  let isValidSignature = useComputedState(async () => {
-    if (evt.id && evt.sig) {
-      try {
-        return await verifySignature(evt)
-      } catch (err) {
-        return false
-      }
-    } else {
-      return null
-    }
-  }, [value])
-
-  return (
-    <>
-      <Item
-        label="serialized event"
-        hint="according to nip-01 signature algorithm"
-      >
-        {serializeEvent(evt)}
-      </Item>
-      <Item label="event id" hint="sha256 hash of serialized event">
-        {eventHash}
-      </Item>
-      <Item
-        label="event id matches hash"
-        hint="the calculated hash from event data matches the 'id' in the body?"
-      >
-        {isValidHash?.toString()}
-      </Item>
-      {isValidHash &&
-        (evt.sig ? (
-          <Item label="signature valid">
-            {isValidSignature?.toString() || ''}
-          </Item>
-        ) : (
-          <>
-            <Item
-              label="private key"
-              hint="paste any private key here (32 bytes hex-encoded)"
-            >
-              <input
-                value={privateKey}
-                onChange={e => setPrivateKey(e.target.value.toLowerCase())}
-              />{' '}
-              {privateKeyIsValid ? 'valid' : 'invalid'}
-            </Item>
-            <Item label="public key">{publicKey}</Item>
-            <Item label="signature">{privateKeyIsValid ? signature : ''}</Item>
-          </>
-        ))}
-    </>
-  )
-}
-
-EventSigning.match = value => {
-  try {
-    let evt = JSON.parse(value)
-    return evt.kind && evt.content && evt.tags
-  } catch (err) {
-    /**/
-  }
-  return false
-}

handlers/KeyHandling.jsx

@@ -1,27 +0,0 @@
-import React from 'react'
-import useBooleanState from 'use-boolean-state'
-
-import {getPublicKey} from 'nostr-tools'
-
-import Item from '../components/item'
-
-export default function KeyHandling({value}) {
-  let privateKey = value
-  let publicKey = getPublicKey(privateKey)
-
-  return (
-    <>
-      <Item label="private key">{privateKey}</Item>
-      <Item label="public key">{publicKey}</Item>
-    </>
-  )
-}
-
-KeyHandling.match = value => {
-  try {
-    if (value.toLowerCase().match(/^[a-f0-9]{64}$/)) return true
-  } catch (err) {
-    /**/
-  }
-  return false
-}

handlers/Nothing.jsx

@@ -1,28 +0,0 @@
-import React from 'react'
-
-export default function Nothing() {
-  return (
-    <>
-      you can paste
-      <ul>
-        <li>an unsigned event to be hashed and signed</li>
-        <li>a signed event to have its signature checked</li>
-        <li>a nostr relay URL to be inspected</li>
-        <li>a nostr event id we'll try to fetch</li>
-        <li>a nip05 identifier to be checked</li>
-        <li>
-          contribute a new function:{' '}
-          <a
-            target="_blank"
-            style={{color: 'inherit'}}
-            href="https://github.com/fiatjaf/nostr-army-knife"
-          >
-            _______
-          </a>
-        </li>
-      </ul>
-    </>
-  )
-}
-
-Nothing.match = () => true

helpers.go

@@ -0,0 +1,110 @@
+package main
+
+import (
+	"bufio"
+	"context"
+	"encoding/hex"
+	"fmt"
+	"net/url"
+	"os"
+	"strings"
+
+	"github.com/urfave/cli/v2"
+)
+
+const (
+	LINE_PROCESSING_ERROR = iota
+)
+
+func isPiped() bool {
+	stat, _ := os.Stdin.Stat()
+	return stat.Mode()&os.ModeCharDevice == 0
+}
+
+func getStdinLinesOrBlank() chan string {
+	multi := make(chan string)
+	if hasStdinLines := writeStdinLinesOrNothing(multi); !hasStdinLines {
+		single := make(chan string, 1)
+		single <- ""
+		close(single)
+		return single
+	} else {
+		return multi
+	}
+}
+
+func getStdinLinesOrFirstArgument(c *cli.Context) chan string {
+	// try the first argument
+	target := c.Args().First()
+	if target != "" {
+		single := make(chan string, 1)
+		single <- target
+		return single
+	}
+
+	// try the stdin
+	multi := make(chan string)
+	writeStdinLinesOrNothing(multi)
+	return multi
+}
+
+func writeStdinLinesOrNothing(ch chan string) (hasStdinLines bool) {
+	if isPiped() {
+		// piped
+		go func() {
+			scanner := bufio.NewScanner(os.Stdin)
+			for scanner.Scan() {
+				ch <- strings.TrimSpace(scanner.Text())
+			}
+			close(ch)
+		}()
+		return true
+	} else {
+		// not piped
+		return false
+	}
+}
+
+func validateRelayURLs(wsurls []string) error {
+	for _, wsurl := range wsurls {
+		u, err := url.Parse(wsurl)
+		if err != nil {
+			return fmt.Errorf("invalid relay url '%s': %s", wsurl, err)
+		}
+
+		if u.Scheme != "ws" && u.Scheme != "wss" {
+			return fmt.Errorf("relay url must use wss:// or ws:// schemes, got '%s'", wsurl)
+		}
+
+		if u.Host == "" {
+			return fmt.Errorf("relay url '%s' is missing the hostname", wsurl)
+		}
+	}
+
+	return nil
+}
+
+func validate32BytesHex(target string) error {
+	if _, err := hex.DecodeString(target); err != nil {
+		return fmt.Errorf("target '%s' is not valid hex: %s", target, err)
+	}
+	if len(target) != 64 {
+		return fmt.Errorf("expected '%s' to be 64 characters (32 bytes), got %d", target, len(target))
+	}
+	if strings.ToLower(target) != target {
+		return fmt.Errorf("expected target to be all lowercase hex. try again with '%s'", strings.ToLower(target))
+	}
+
+	return nil
+}
+
+func lineProcessingError(c *cli.Context, msg string, args ...any) {
+	c.Context = context.WithValue(c.Context, LINE_PROCESSING_ERROR, true)
+	fmt.Fprintf(os.Stderr, msg+"\n", args...)
+}
+
+func exitIfLineProcessingError(c *cli.Context) {
+	if val := c.Context.Value(LINE_PROCESSING_ERROR); val != nil && val.(bool) {
+		os.Exit(123)
+	}
+}

main.go

@@ -0,0 +1,29 @@
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/urfave/cli/v2"
+)
+
+func main() {
+	app := &cli.App{
+		Name:  "nak",
+		Usage: "the nostr army knife command-line tool",
+		Commands: []*cli.Command{
+			req,
+			count,
+			fetch,
+			event,
+			decode,
+			encode,
+			verify,
+		},
+	}
+
+	if err := app.Run(os.Args); err != nil {
+		fmt.Println(err)
+		os.Exit(1)
+	}
+}

package.json

@@ -1,17 +0,0 @@
-{
-  "dependencies": {
-    "@esbuild-plugins/node-globals-polyfill": "^0.1.1",
-    "esbuild": "^0.14.21",
-    "esbuild-plugin-alias": "^0.2.1",
-    "events": "^3.3.0",
-    "nostr-tools": "^0.22.1",
-    "react": "^17.0.2",
-    "react-dom": "^17.0.2",
-    "use-boolean-state": "^1.0.2",
-    "use-computed-state": "1.1.0"
-  },
-  "scripts": {
-    "build": "./build.js prod",
-    "watch": "ag -l --js | entr ./build.js"
-  }
-}

public/index.html

@@ -1,8 +0,0 @@
-<meta charset="utf-8" />
-<title>nostr army knife</title>
-<link
-  rel="stylesheet"
-  href="https://cdnjs.cloudflare.com/ajax/libs/wenk/1.0.8/wenk.min.css"
-/>
-<div id="app" />
-<script src="app.js"></script>

req.go

@@ -0,0 +1,185 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"strings"
+
+	"github.com/nbd-wtf/go-nostr"
+	"github.com/urfave/cli/v2"
+)
+
+const CATEGORY_FILTER_ATTRIBUTES = "FILTER ATTRIBUTES"
+
+var req = &cli.Command{
+	Name:  "req",
+	Usage: "generates encoded REQ messages and optionally use them to talk to relays",
+	Description: `outputs a NIP-01 Nostr filter. when a relay is not given, will print the filter, otherwise will connect to the given relay and send the filter.
+
+example:
+		nak req -k 1 -l 15 wss://nostr.wine wss://nostr-pub.wellorder.net
+		nak req -k 0 -a 3bf0c63fcb93463407af97a5e5ee64fa883d107ef9e558472c4eb9aaaefa459d wss://nos.lol | jq '.content | fromjson | .name'
+
+it can also take a filter from stdin, optionally modify it with flags and send it to specific relays (or just print it).
+
+example:
+		echo '{"kinds": [1], "#t": ["test"]}' | nak req -l 5 -k 4549 --tag t=spam wss://nostr-pub.wellorder.net
+`,
+	Flags: []cli.Flag{
+		&cli.StringSliceFlag{
+			Name:     "author",
+			Aliases:  []string{"a"},
+			Usage:    "only accept events from these authors (pubkey as hex)",
+			Category: CATEGORY_FILTER_ATTRIBUTES,
+		},
+		&cli.StringSliceFlag{
+			Name:     "id",
+			Aliases:  []string{"i"},
+			Usage:    "only accept events with these ids (hex)",
+			Category: CATEGORY_FILTER_ATTRIBUTES,
+		},
+		&cli.IntSliceFlag{
+			Name:     "kind",
+			Aliases:  []string{"k"},
+			Usage:    "only accept events with these kind numbers",
+			Category: CATEGORY_FILTER_ATTRIBUTES,
+		},
+		&cli.StringSliceFlag{
+			Name:     "tag",
+			Aliases:  []string{"t"},
+			Usage:    "takes a tag like -t e=<id>, only accept events with these tags",
+			Category: CATEGORY_FILTER_ATTRIBUTES,
+		},
+		&cli.StringSliceFlag{
+			Name:     "e",
+			Usage:    "shortcut for --tag e=<value>",
+			Category: CATEGORY_FILTER_ATTRIBUTES,
+		},
+		&cli.StringSliceFlag{
+			Name:     "p",
+			Usage:    "shortcut for --tag p=<value>",
+			Category: CATEGORY_FILTER_ATTRIBUTES,
+		},
+		&cli.IntFlag{
+			Name:     "since",
+			Aliases:  []string{"s"},
+			Usage:    "only accept events newer than this (unix timestamp)",
+			Category: CATEGORY_FILTER_ATTRIBUTES,
+		},
+		&cli.IntFlag{
+			Name:     "until",
+			Aliases:  []string{"u"},
+			Usage:    "only accept events older than this (unix timestamp)",
+			Category: CATEGORY_FILTER_ATTRIBUTES,
+		},
+		&cli.IntFlag{
+			Name:     "limit",
+			Aliases:  []string{"l"},
+			Usage:    "only accept up to this number of events",
+			Category: CATEGORY_FILTER_ATTRIBUTES,
+		},
+		&cli.StringFlag{
+			Name:     "search",
+			Usage:    "a NIP-50 search query, use it only with relays that explicitly support it",
+			Category: CATEGORY_FILTER_ATTRIBUTES,
+		},
+		&cli.BoolFlag{
+			Name:  "bare",
+			Usage: "when printing the filter, print just the filter, not enveloped in a [\"REQ\", ...] array",
+		},
+		&cli.BoolFlag{
+			Name:        "stream",
+			Usage:       "keep the subscription open, printing all events as they are returned",
+			DefaultText: "false, will close on EOSE",
+		},
+	},
+	ArgsUsage: "[relay...]",
+	Action: func(c *cli.Context) error {
+		for stdinFilter := range getStdinLinesOrBlank() {
+			filter := nostr.Filter{}
+			if stdinFilter != "" {
+				if err := json.Unmarshal([]byte(stdinFilter), &filter); err != nil {
+					lineProcessingError(c, "invalid filter '%s' received from stdin: %s", stdinFilter, err)
+					continue
+				}
+			}
+
+			if authors := c.StringSlice("author"); len(authors) > 0 {
+				filter.Authors = append(filter.Authors, authors...)
+			}
+			if ids := c.StringSlice("id"); len(ids) > 0 {
+				filter.IDs = append(filter.IDs, ids...)
+			}
+			if kinds := c.IntSlice("kind"); len(kinds) > 0 {
+				filter.Kinds = append(filter.Kinds, kinds...)
+			}
+			if search := c.String("search"); search != "" {
+				filter.Search = search
+			}
+			tags := make([][]string, 0, 5)
+			for _, tagFlag := range c.StringSlice("tag") {
+				spl := strings.Split(tagFlag, "=")
+				if len(spl) == 2 && len(spl[0]) == 1 {
+					tags = append(tags, spl)
+				} else {
+					return fmt.Errorf("invalid --tag '%s'", tagFlag)
+				}
+			}
+			for _, etag := range c.StringSlice("e") {
+				tags = append(tags, []string{"e", etag})
+			}
+			for _, ptag := range c.StringSlice("p") {
+				tags = append(tags, []string{"p", ptag})
+			}
+
+			if len(tags) > 0 && filter.Tags == nil {
+				filter.Tags = make(nostr.TagMap)
+			}
+
+			for _, tag := range tags {
+				if _, ok := filter.Tags[tag[0]]; !ok {
+					filter.Tags[tag[0]] = make([]string, 0, 3)
+				}
+				filter.Tags[tag[0]] = append(filter.Tags[tag[0]], tag[1])
+			}
+
+			if since := c.Int("since"); since != 0 {
+				ts := nostr.Timestamp(since)
+				filter.Since = &ts
+			}
+			if until := c.Int("until"); until != 0 {
+				ts := nostr.Timestamp(until)
+				filter.Until = &ts
+			}
+			if limit := c.Int("limit"); limit != 0 {
+				filter.Limit = limit
+			}
+
+			relays := c.Args().Slice()
+			if len(relays) > 0 {
+				pool := nostr.NewSimplePool(c.Context)
+				fn := pool.SubManyEose
+				if c.Bool("stream") {
+					fn = pool.SubMany
+				}
+				for ie := range fn(c.Context, relays, nostr.Filters{filter}) {
+					fmt.Println(ie.Event)
+				}
+			} else {
+				// no relays given, will just print the filter
+				var result string
+				if c.Bool("bare") {
+					result = filter.String()
+				} else {
+					j, _ := json.Marshal([]any{"REQ", "nak", filter})
+					result = string(j)
+				}
+
+				fmt.Println(result)
+			}
+		}
+
+		exitIfLineProcessingError(c)
+		return nil
+	},
+}

verify.go

@@ -0,0 +1,42 @@
+package main
+
+import (
+	"encoding/json"
+
+	"github.com/nbd-wtf/go-nostr"
+	"github.com/urfave/cli/v2"
+)
+
+var verify = &cli.Command{
+	Name:  "verify",
+	Usage: "checks the hash and signature of an event given through stdin",
+	Description: `example:
+		echo '{"id":"a889df6a387419ff204305f4c2d296ee328c3cd4f8b62f205648a541b4554dfb","pubkey":"c6047f9441ed7d6d3045406e95c07cd85c778e4b8cef3ca7abac09b95c709ee5","created_at":1698623783,"kind":1,"tags":[],"content":"hello from the nostr army knife","sig":"84876e1ee3e726da84e5d195eb79358b2b3eaa4d9bd38456fde3e8a2af3f1cd4cda23f23fda454869975b3688797d4c66e12f4c51c1b43c6d2997c5e61865661"}' | nak verify
+
+it outputs nothing if the verification is successful.
+`,
+	Action: func(c *cli.Context) error {
+		for stdinEvent := range getStdinLinesOrBlank() {
+			evt := nostr.Event{}
+			if stdinEvent != "" {
+				if err := json.Unmarshal([]byte(stdinEvent), &evt); err != nil {
+					lineProcessingError(c, "invalid event: %s", err)
+					continue
+				}
+			}
+
+			if evt.GetID() != evt.ID {
+				lineProcessingError(c, "invalid .id, expected %s, got %s", evt.GetID(), evt.ID)
+				continue
+			}
+
+			if ok, err := evt.CheckSignature(); !ok {
+				lineProcessingError(c, "invalid signature: %s", err)
+				continue
+			}
+		}
+
+		exitIfLineProcessingError(c)
+		return nil
+	},
+}