From 34d0ca9f133a90660184b7ec823bfad21fdecb79 Mon Sep 17 00:00:00 2001
From: AJ ONeal <coolaj86@gmail.com>
Date: Thu, 7 Mar 2019 00:04:55 -0700
Subject: [PATCH] v1.2.6: Make neuter public, replace bin with installer

---
 bin/keypairs.js | 615 +-----------------------------------------------
 keypairs.js     |   7 +-
 package.json    |   4 +-
 3 files changed, 15 insertions(+), 611 deletions(-)

diff --git a/bin/keypairs.js b/bin/keypairs.js
index 8116a3e..1acc2f4 100755
--- a/bin/keypairs.js
+++ b/bin/keypairs.js
@@ -1,611 +1,12 @@
 #!/usr/bin/env node
 'use strict';
 
-// I'm not proud of the way this code is written - it snowballed from a thought
-// experiment into a full-fledged CLI, literally overnight (as it it's 4:30am
-// right now), but I love what it accomplishes!
-
-/*global Promise*/
-var fs = require('fs');
-var Rasha = require('rasha');
-var Eckles = require('eckles');
-var Keypairs = require('../');
-var pkg = require('../package.json');
-
-var args = process.argv.slice(2);
-var opts = { keys: [], jwts: [], jwss: [], payloads: [], names: [], filenames: [], files: [] };
-var conflicts = {
-  'namedCurve': 'modulusLength'
-, 'public': 'private'
-};
-Object.keys(conflicts).forEach(function (k) {
-  conflicts[conflicts[k]] = k;
+var cmd = "npm install --global keypairs-cli";
+console.error(cmd);
+require('child_process').exec(cmd, function (err) {
+  if (err) {
+    console.error(err);
+    return;
+  }
+  console.info("Run 'keypairs help' to see what you can do!");
 });
-function set(key, val) {
-  if (opts[conflicts[key]]) {
-    console.error("cannot set '" + key + "' to '" + val + "': '" + conflicts[key] + "' already set as '" + opts[conflicts[key]] + "'");
-    process.exit(1);
-  }
-  if (opts[key]) {
-    console.error("cannot set '" + key + "' to '" + val + "': already set as '" + opts[key] + "'");
-    process.exit(1);
-  }
-  opts[key] = val;
-}
-
-// duck type all the things
-// TODO segment off by actions (gen, sign, verify) and allow parse/convert or gen before sign
-args.forEach(function (arg) {
-  var larg = arg.toLowerCase().replace(/[^\w]/g, '');
-  var narg = parseInt(arg, 10) || 0;
-  if (narg.toString() !== arg) {
-    // i.e. 2048.pem is a valid file name
-    narg = false;
-  }
-
-  if ('version' === arg) {
-    console.info(pkg.name, 'v' + pkg.version);
-    process.exit(0);
-  }
-
-  if (setTimes(arg)) {
-    return;
-  }
-  if (setIssuer(arg)) {
-    return;
-  }
-  if (setSubject(arg)) {
-    return;
-  }
-
-  if ('ecdsa' === larg || 'ec' === larg) {
-    set('kty', "EC");
-    if (opts.modulusLength) {
-      console.error("EC keys do not have bit lengths such as '" + opts.modulusLength + "'. Choose either the P-256 or P-384 'curve' instead.");
-      process.exit(1);
-    }
-  }
-  if ('rsa' === larg) {
-    set('kty', "RSA");
-    if (opts.namedCurve) {
-      console.error("RSA keys do not have curves such as '" + opts.namedCurve + "'. Choose a modulus bit length, such as 2048 instead.");
-      process.exit(1);
-    }
-    return;
-  }
-
-  // P-384
-  if (-1 !== ['256', 'p256', 'prime256v1', 'secp256r1'].indexOf(larg)) {
-    set('namedCurve', "P-256");
-    return;
-  }
-
-  // P-384
-  if (-1 !== ['384', 'p384', 'secp384r1'].indexOf(larg)) {
-    set('namedCurve', "P-384");
-    return;
-  }
-
-  // RSA Modulus Length
-  if (narg) {
-    if (narg < 2048 || narg % 8 || narg > 8192) {
-      console.error("RSA modulusLength must be >=2048, <=8192 and divisible by 8");
-      process.exit(1);
-    }
-    set('modulusLength', narg);
-    return;
-  }
-
-  // Booleans
-  if (-1 !== [ 'private', 'public', 'nocompact', 'nofetch', 'debug', 'overwrite' ].indexOf(arg)) {
-    set(arg, true);
-    return;
-  }
-  if ('uncompressed' === arg) {
-    set('uncompressed', true);
-    return;
-  }
-  if (-1 !== [ 'gen', 'sign', 'verify', 'decode' ].indexOf(arg)) {
-    set('action', arg);
-    return;
-  }
-
-  // Key format and encoding
-  if (-1 !== [ 'spki', 'pkix' ].indexOf(larg)) {
-    set('pubFormat', 'spki');
-    return;
-  }
-  // TODO add ssh private key support (it's already built in jwk-to-ssh)
-  if ('ssh' === larg) {
-    set('pubFormat', 'ssh');
-    return;
-  }
-  if (-1 !== [ 'openssh', 'sec1', 'pkcs1', 'pkcs8' ].indexOf(larg)) {
-    // pkcs1 can be public or private, it's ambiguous
-    if (!opts.privFormat) {
-      set('privFormat', larg);
-      return;
-    }
-
-    if ('pkcs1' === larg || 'ssh' === larg) {
-      set('pubFormat', larg);
-      return;
-    }
-    if ('openssh' === larg) {
-      console.warn("specifying 'openssh' twice? ...assuming that you meant 'ssh'");
-      set('pubFormat', 'ssh');
-      return;
-    }
-    if ('pkcs8' === larg) {
-      console.warn("specifying 'pkcs8' twice? ...assuming that you meant 'spki' (pkix)");
-      set('pubFormat', 'spki');
-      return;
-    }
-    if ('sec1' === larg) {
-      console.warn("specifying 'sec1' twice? ...assuming that you meant 'spki' (pkix)");
-      set('pubFormat', 'spki');
-      return;
-    }
-    return;
-  }
-  if ('jwk' === larg) {
-    if (!opts.privFormat) {
-      set('privFormat', larg);
-    } else {
-      set('pubFormat', larg);
-    }
-    return;
-  }
-  if ('pem' === larg || 'der' === larg || 'json' === larg) {
-    if (!opts.privEncoding) {
-      set('privEncoding', larg);
-    } else {
-      set('pubEncoding', larg);
-    }
-    return;
-  }
-
-  // Filename
-  try {
-    fs.accessSync(arg);
-    opts.filenames.push(arg);
-    opts.names.push({ taken: true, name: arg });
-    if (!guessFile(arg)) {
-      opts.files.push(arg);
-    }
-    return;
-  } catch(e) { /* not keypath */ }
-
-  // Test for JWK-ness / payload-ness
-  if (guess(arg)) {
-    return;
-  }
-
-  // Test for JWT-ness
-  if (setJwt(arg)) {
-    return;
-  }
-
-  // Possibly the output file
-  if (opts.names.length < 3) {
-    opts.names.push({ taken: false, name: arg });
-    return;
-  }
-  // check if it's a valid output key
-
-  console.error("too many arguments or didn't understand argument '" + arg + "'");
-  if (opts.debug) {
-    console.warn(opts);
-  }
-  process.exit(1);
-});
-
-function guessFile(filename) {
-  try {
-    // TODO der support
-    var txt = fs.readFileSync(filename).toString('utf8');
-    return guess(txt, filename);
-  } catch(e) {
-    return false;
-  }
-}
-
-function guess(txt, filename) {
-  try {
-    var json = JSON.parse(txt);
-    if (-1 !== [ 'RSA', 'EC' ].indexOf(json.kty)) {
-      opts.keys.push({ raw: txt, jwk: json, filename: filename });
-      return true;
-    } else if (json.signature && json.payload && (json.header || json.protected)) {
-      opts.jwss.push(json);
-      return true;
-    } else {
-      opts.payloads.push(txt);
-      return true;
-    }
-  } catch(e) {
-    try {
-      var jwk = Eckles.importSync({ pem: txt });
-      // pem._string = txt;
-      opts.keys.push({ jwk: jwk, pem: true, raw: txt });
-      return true;
-    } catch(e) {
-      try {
-        var jwk = Rasha.importSync({ pem: txt });
-        // pem._string = txt;
-        opts.keys.push({ jwk: jwk, pem: true, raw: txt });
-        return true;
-      } catch(e) {
-        // ignore
-      }
-    }
-  }
-  return false;
-}
-
-// node bin/keypairs.js debug spki pem json pkcs1 ~/.ssh/id_rsa.pub foo.pem bar.pem 'abc.abc.abc' '{"kty":"EC"}' '{}' '{"signature":"x", "payload":"x", "header":"x"}' '{"signature":"x", "payload":"x", "protected":"x"}' verify
-if (opts.debug) {
-  console.warn(opts);
-}
-
-var kp;
-
-if ('gen' === opts.action || (!opts.action && !opts.names.length)) {
-  if (opts.names.length > 2) {
-    console.error("there should only be two output files at most when generating keypairs");
-    console.error(opts.names.map(function (t) { return t.name; }));
-    process.exit(1);
-    return;
-  }
-
-  kp = genKeypair();
-} else if ('decode' === opts.action) {
-  if (!opts.jwts.length) {
-    console.error("no JWTs specified to decode");
-    process.exit(1);
-    return;
-  }
-
-  return Promise.all(opts.jwts.map(function (jwt, i) {
-    try {
-      var decoded = decodeJwt(jwt);
-      console.info("Decoded #" + (i + 1) + ":");
-      console.info(JSON.stringify(decoded, null, 2));
-    } catch(e) {
-      console.error("Failed to decode #" + (i + 1) + ":");
-      console.error(e);
-    }
-  }));
-} else if ('verify' === opts.action || (!opts.action && opts.jwts.length)) {
-  if (!opts.jwts.length) {
-    console.error("no JWTs specified to verify");
-    process.exit(1);
-    return;
-  }
-
-  return Promise.all(opts.jwts.map(function (jwt, i) {
-    return require('keyfetch').verify({ jwt: jwt }).then(function (decoded) {
-      console.info("Verified #" + (i + 1) + ":");
-      console.info(JSON.stringify(decoded, null, 2));
-    }).catch(function (err) {
-      console.error("Failed to verify #" + (i + 1) + ":");
-      console.error(err);
-    });
-  }));
-} else {
-  if (opts.names.length > 3) {
-    console.error("there should only be one input file and up to two output files when converting keypairs");
-    console.error(opts.names.map(function (t) { return t.name; }));
-    process.exit(1);
-    return;
-  }
-  var pair = readKeypair();
-  pair._convert = true;
-  kp = Promise.resolve(pair);
-}
-
-if ('sign' === opts.action) {
-  return kp.then(function (pair) {
-    var jwk = pair.private;
-    if (!jwk || !jwk.d) {
-      console.error("the first key was not a private key");
-      console.error(opts.names.map(function (t) { return t.name; }));
-      process.exit(1);
-      return;
-    }
-    if (!opts.payloads.length) {
-      opts.payloads.push('{}');
-    }
-    return Promise.all(opts.payloads.map(function (payload) {
-      var claims = JSON.parse(payload);
-      if (!claims.iss) { claims.iss = opts.issuer; }
-      if (!claims.iss) { console.warn("No issuer given, token will not be verifiable"); }
-      if (!claims.sub) { claims.sub = opts.sub; }
-      if (!claims.exp) {
-        if (!opts.expiresAt) { setTimes('15m'); }
-        claims.exp = opts.expiresAt;
-      }
-      if (!claims.iat) { claims.iat = opts.issuedAt; }
-      if (!claims.nbf) { claims.nbf = opts.nbf; }
-      return Keypairs.signJwt({ jwk: pair.private, claims: claims }).then(function (jwt) {
-        console.info(jwt);
-      });
-    }));
-  });
-} else {
-  return kp.then(function (pair) {
-    if (pair._convert) {
-      return convertKeypair(pair);
-    }
-  });
-}
-
-function readKeypair() {
-  // note that the jwk may be a string
-  var keyopts = opts.keys.shift();
-  var jwk = keyopts && keyopts.jwk;
-  if (!jwk) {
-    console.error("no keys could be parsed from the given arguments");
-    console.error(opts.names.map(function (t) { return t.name; }));
-    process.exit(1);
-    return;
-  }
-
-  // omit the primary private key from the list of actual (or soon-to-be) files
-  if (keyopts.filename) {
-    opts.names = opts.names.filter(function (name) {
-      return name.name !== keyopts.filename;
-    });
-  }
-
-  var pair = { private: null, public: null, pem: keyopts.pem, raw: keyopts.raw };
-  if (jwk.d) {
-    pair.private = jwk;
-  }
-  pair.public = Keypairs._neuter({ jwk: jwk });
-  return pair;
-}
-
-// Note: some of the conditions can be factored out
-// this was all built in high-speed iterative during the 3ams+
-function convertKeypair(pair) {
-  //var pair = readKeypair();
-
-  var ps = [];
-  // if it's private only, or if it's not public-only, produce the private key
-  if (pair.private || !opts.public) {
-    // if it came from pem (or is explicitly json), it should go to jwk
-    // otherwise, if it came from jwk, it should go to pem
-    if (((!opts.privEncoding && pair.pem) || 'json' === opts.privEncoding)
-      && ((!opts.privFormat && pair.pem) || 'jwk' === opts.privFormat)) {
-      ps.push(Promise.resolve(pair.private));
-    } else {
-      ps.push(Keypairs.export({ jwk: pair.private, format: opts.privFormat, encoding: opts.privEncoding }));
-    }
-  }
-
-  // if it's not private key only, we want to produce the public key
-  if (!opts.private) {
-    if (opts.public) {
-      // if it's public-only the ambigious options will fall to the private key
-      // so we need to fix that
-      if (!opts.pubFormat) { opts.pubFormat = opts.privFormat; }
-      if (!opts.pubEncoding) { opts.pubEncoding = opts.privEncoding; }
-    }
-
-    // same as above - swap formats by default
-    if (((!opts.pubEncoding && pair.pem) || 'json' === opts.pubEncoding)
-      && ((!opts.pubFormat && pair.pem) || 'jwk' === opts.pubFormat)) {
-      ps.push(Promise.resolve(pair.public));
-    } else {
-      ps.push(Keypairs.export({ jwk: pair.public, format: opts.pubFormat, encoding: opts.pubEncoding, public: true }));
-    }
-  }
-
-  return Promise.all(ps).then(function (exported) {
-    // start with the first key, annotating if it should be public
-    var index = 0;
-    var key = stringifyIfJson(index, opts.public);
-
-    // re: opts.names
-    // if we're only doing the public key we can end early
-    // (if the source key was from a file and was in opts.names,
-    // we're safe here because we already removed it earlier)
-
-    if (opts.public) {
-      if (opts.names.length) {
-        writeFile(opts.names[index].name, key, !opts.public);
-      } else {
-        // output public keys to stderr
-        printPublic(key);
-      }
-      // end <-- we're not outputting other keys
-      return;
-    }
-
-    // private key stuff
-    if (opts.names.length >= 1) {
-      writeFile(opts.names[index].name, key, true);
-    } else {
-      printPrivate(key);
-    }
-
-    // pub key stuff
-    // we have to output the private key,
-    // but the public key can be derived at any time
-    // so we don't need to put the same noise to the screen
-    if (!opts.private && opts.names.length >= 2) {
-      index = 1;
-      key = stringifyIfJson(index, false);
-      writeFile(opts.names[index].name, key, false);
-    }
-
-    return pair;
-
-    function stringifyIfJson(i, pub) {
-      if (exported[i].kty) {
-        if (pub) {
-          if (opts.expiresAt) { exported[i].exp = opts.expiresAt; }
-          exported[i].use = "sig";
-        }
-        exported[i] = JSON.stringify(exported[i]);
-      }
-      return exported[i];
-    }
-  });
-}
-
-function genKeypair() {
-  return Keypairs.generate({
-    kty: opts.kty
-  , modulusLength: opts.modulusLength
-  , namedCurve: opts.namedCurve
-  }).then(function (pair) {
-    // always generate as jwk by default
-    var ps = [];
-    if ((!opts.privEncoding || 'json' === opts.privEncoding) && (!opts.privFormat || 'jwk' === opts.privFormat)) {
-      ps.push(Promise.resolve(pair.private));
-    } else {
-      ps.push(Keypairs.export({ jwk: pair.private, format: opts.privFormat, encoding: opts.privEncoding }));
-    }
-    if ((!opts.pubEncoding || 'json' === opts.pubEncoding) && (!opts.pubFormat || 'jwk' === opts.pubFormat)) {
-      ps.push(Promise.resolve(pair.public));
-    } else {
-      ps.push(Keypairs.export({ jwk: pair.public, format: opts.pubFormat, encoding: opts.pubEncoding, public: true }));
-    }
-    return Promise.all(ps).then(function (arr) {
-      if (arr[0].kty) {
-        arr[0] = JSON.stringify(arr[0]);
-      }
-      if (arr[1].kty) {
-        if (opts.expiresAt) { arr[1].exp = opts.expiresAt; }
-        arr[1].use = "sig";
-        arr[1] = JSON.stringify(arr[1]);
-      }
-      if (!opts.names.length) {
-        console.info(arr[0] + "\n");
-        console.warn(arr[1] + "\n");
-      }
-      if (opts.names.length >= 1) {
-        writeFile(opts.names[0].name, arr[0], true);
-        if (!opts.private && opts.names.length >= 2) {
-          writeFile(opts.names[1].name, arr[1]);
-        }
-      }
-
-      return pair;
-    });
-  });
-}
-
-function writeFile(name, key, priv) {
-  var overwrite;
-  try {
-    fs.accessSync(name);
-    overwrite = opts.overwrite;
-    if (!opts.overwrite) {
-      if (priv) {
-        // output private keys to stdout
-        console.info(key + "\n");
-      } else {
-        // output public keys to stderr
-        console.warn(key + "\n");
-      }
-      console.error("'" + name + "' exists! force overwrite with 'overwrite'");
-      process.exit(1);
-      return;
-    }
-  } catch(e) {
-    // the file does not exist (or cannot be accessed)
-  }
-  fs.writeFileSync(name, key);
-  if (overwrite) {
-    console.info("Overwrote " + (priv ? "private" : "public") + " key at '" + name + "'");
-  } else {
-    console.info("Wrote " + (priv ? "private" : "public") + " key to '" + name + "'");
-  }
-}
-
-function setJwt(arg) {
-  try {
-    var jwt = arg.match(/^([\w-]+)\.([\w-]+)\.([\w-]+)$/);
-    // make sure header is a JWT header
-    JSON.parse(Buffer.from(jwt[1], 'base64'));
-    opts.jwts.push(arg);
-    return true;
-  } catch(e) {
-    // ignore
-  }
-}
-
-function setSubject(arg) {
-  if (!/.+@[a-z0-9_-]+\.[a-z0-9_-]+/i.test(arg)) {
-    return false;
-  }
-
-  opts.subject = arg;
-  return false;
-}
-
-function setIssuer(arg) {
-  if (!/^https?:\/\/[a-z0-9_-]+\.[a-z0-9_-]+/i.test(arg)) {
-    return false;
-  }
-
-  try {
-    new URL(arg);
-    opts.issuer = arg.replace(/\/$/, '');
-    return true;
-  } catch(e) {
-  }
-  return false;
-}
-
-function setTimes(arg) {
-  var t = arg.match(/^(\-?\d+)([dhms])$/i);
-  if (!t || !t[0]) {
-    return false;
-  }
-
-  var num = parseInt(t[1], 10);
-  var unit = t[2];
-  var mult = 1;
-  opts.issuedAt = Math.round(Date.now()/1000);
-  switch(unit) {
-    // fancy fallthrough, what fun!
-    case 'd':
-      mult *= 24;
-      /*falls through*/
-    case 'h':
-      mult *= 60;
-      /*falls through*/
-    case 'm':
-      mult *= 60;
-      /*falls through*/
-    case 's':
-      mult *= 1;
-  }
-  if (!opts.expiresIn) {
-    opts.expiresIn = mult * num;
-    opts.expiresAt = opts.issuedAt + opts.expiresIn;
-  } else {
-    opts.nbf = opts.issuedAt + (mult * num);
-  }
-  return true;
-}
-
-function decodeJwt(jwt) {
-  var parts = jwt.split('.');
-  return {
-    header: JSON.parse(Buffer.from(parts[0], 'base64'))
-  , payload: JSON.parse(Buffer.from(parts[1], 'base64'))
-  , signature: parts[2] //Buffer.from(parts[2], 'base64')
-  };
-}
-
-function printPrivate(key) {
-  console.info(key + "\n");
-}
-function printPublic(key) {
-  console.warn(key + "\n");
-}
diff --git a/keypairs.js b/keypairs.js
index 2b8d85e..c38ed10 100644
--- a/keypairs.js
+++ b/keypairs.js
@@ -87,7 +87,9 @@ Keypairs.export = function (opts) {
   });
 };
 
-Keypairs._neuter = function (opts) {
+// Chopping off the private parts is now part of the public API.
+// I thought it sounded a little too crude at first, but it really is the best name in every possible way.
+Keypairs.neuter = Keypairs._neuter = function (opts) {
   // trying to find the best balance of an immutable copy with custom attributes
   var jwk = {};
   Object.keys(opts.jwk).forEach(function (k) {
@@ -97,10 +99,11 @@ Keypairs._neuter = function (opts) {
   });
   return jwk;
 };
+
 Keypairs.publish = function (opts) {
   if ('object' !== typeof opts.jwk || !opts.jwk.kty) { throw new Error("invalid jwk: " + JSON.stringify(opts.jwk)); }
 
-  var jwk = Keypairs._neuter(opts);
+  var jwk = Keypairs.neuter(opts);
 
   if (!jwk.exp) {
     if (opts.expiresIn) { jwk.exp = Math.round(Date.now()/1000) + opts.expiresIn; }
diff --git a/package.json b/package.json
index 0f82710..6b309f3 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "keypairs",
-  "version": "1.2.5",
+  "version": "1.2.6",
   "description": "Lightweight RSA/ECDSA keypair generation and JWK <-> PEM",
   "main": "keypairs.js",
   "files": [
@@ -11,7 +11,7 @@
     "test": "node test.js"
   },
   "bin": {
-    "keypairs": "bin/keypairs.js"
+    "keypairs-install": "bin/keypairs.js"
   },
   "repository": {
     "type": "git",