;(function(){
/* UNBUILD */
var root;
if(typeof window !== "undefined"){ root = window }
if(typeof global !== "undefined"){ root = global }
root = root || {};
var console = root.console || {log: function(){}};
function USE(arg){
return arg.slice? USE[R(arg)] : function(mod, path){
arg(mod = {exports: {}});
USE[R(path)] = mod.exports;
}
function R(p){
return p.split('/').slice(-1).toString().replace('.js','');
}
}
if(typeof module !== "undefined"){ var common = module }
/* UNBUILD */
;USE(function(module){
// Security, Encryption, and Authorization: SEA.js
// MANDATORY READING: http://gun.js.org/explainers/data/security.html
// THIS IS AN EARLY ALPHA!
function SEA(){}
if(typeof window !== "undefined"){ SEA.window = window }
module.exports = SEA;
})(USE, './root');
;USE(function(module){
var SEA = USE('./root');
if(SEA.window){
if(location.protocol.indexOf('s') < 0
&& location.host.indexOf('localhost') < 0
&& location.protocol.indexOf('file:') < 0){
location.protocol = 'https:';
}
}
})(USE, './https');
;USE(function(module){
// This is Array extended to have .toString(['utf8'|'hex'|'base64'])
function SeaArray() {}
Object.assign(SeaArray, { from: Array.from })
SeaArray.prototype = Object.create(Array.prototype)
SeaArray.prototype.toString = function(enc = 'utf8', start = 0, end) {
const { length } = this
if (enc === 'hex') {
const buf = new Uint8Array(this)
return [ ...Array(((end && (end + 1)) || length) - start).keys()]
.map((i) => buf[ i + start ].toString(16).padStart(2, '0')).join('')
}
if (enc === 'utf8') {
return Array.from(
{ length: (end || length) - start },
(_, i) => String.fromCharCode(this[ i + start])
).join('')
}
if (enc === 'base64') {
return btoa(this)
}
}
module.exports = SeaArray;
})(USE, './array');
;USE(function(module){
// This is Buffer implementation used in SEA. Functionality is mostly
// compatible with NodeJS 'safe-buffer' and is used for encoding conversions
// between binary and 'hex' | 'utf8' | 'base64'
// See documentation and validation for safe implementation in:
// https://github.com/feross/safe-buffer#update
var SeaArray = USE('./array');
function SafeBuffer(...props) {
console.warn('new SafeBuffer() is depreciated, please use SafeBuffer.from()')
return SafeBuffer.from(...props)
}
SafeBuffer.prototype = Object.create(Array.prototype)
Object.assign(SafeBuffer, {
// (data, enc) where typeof data === 'string' then enc === 'utf8'|'hex'|'base64'
from() {
if (!Object.keys(arguments).length) {
throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.')
}
const input = arguments[0]
let buf
if (typeof input === 'string') {
const enc = arguments[1] || 'utf8'
if (enc === 'hex') {
const bytes = input.match(/([\da-fA-F]{2})/g)
.map((byte) => parseInt(byte, 16))
if (!bytes || !bytes.length) {
throw new TypeError('Invalid first argument for type \'hex\'.')
}
buf = SeaArray.from(bytes)
} else if (enc === 'utf8') {
const { length } = input
const words = new Uint16Array(length)
Array.from({ length }, (_, i) => words[i] = input.charCodeAt(i))
buf = SeaArray.from(words)
} else if (enc === 'base64') {
const dec = atob(input)
const { length } = dec
const bytes = new Uint8Array(length)
Array.from({ length }, (_, i) => bytes[i] = dec.charCodeAt(i))
buf = SeaArray.from(bytes)
} else if (enc === 'binary') {
buf = SeaArray.from(input)
} else {
console.info(`SafeBuffer.from unknown encoding: '${enc}'`)
}
return buf
}
const { byteLength, length = byteLength } = input
if (length) {
let buf
if (input instanceof ArrayBuffer) {
buf = new Uint8Array(input)
}
return SeaArray.from(buf || input)
}
},
// This is 'safe-buffer.alloc' sans encoding support
alloc(length, fill = 0 /*, enc*/ ) {
return SeaArray.from(new Uint8Array(Array.from({ length }, () => fill)))
},
// This is normal UNSAFE 'buffer.alloc' or 'new Buffer(length)' - don't use!
allocUnsafe(length) {
return SeaArray.from(new Uint8Array(Array.from({ length })))
},
// This puts together array of array like members
concat(arr) { // octet array
if (!Array.isArray(arr)) {
throw new TypeError('First argument must be Array containing ArrayBuffer or Uint8Array instances.')
}
return SeaArray.from(arr.reduce((ret, item) => ret.concat(Array.from(item)), []))
}
})
SafeBuffer.prototype.from = SafeBuffer.from
SafeBuffer.prototype.toString = SeaArray.prototype.toString
module.exports = SafeBuffer;
})(USE, './buffer');
;USE(function(module){
const Buffer = USE('./buffer')
const api = {Buffer: Buffer}
if (typeof __webpack_require__ === 'function' || typeof window !== 'undefined') {
const { msCrypto, crypto = msCrypto } = window // STD or M$
const { webkitSubtle, subtle = webkitSubtle } = crypto // STD or iSafari
const { TextEncoder, TextDecoder } = window
Object.assign(api, {
crypto,
subtle,
TextEncoder,
TextDecoder,
random: (len) => Buffer.from(crypto.getRandomValues(new Uint8Array(Buffer.alloc(len))))
})
} else {
try{
const crypto = require('crypto')
//const WebCrypto = require('node-webcrypto-ossl')
//const { subtle: ossl } = new WebCrypto({directory: 'key_storage'}) // ECDH
const { subtle } = require('@trust/webcrypto') // All but ECDH
const { TextEncoder, TextDecoder } = require('text-encoding')
Object.assign(api, {
crypto,
subtle,
//ossl,
TextEncoder,
TextDecoder,
random: (len) => Buffer.from(crypto.randomBytes(len))
})
}catch(e){
console.log("@trust/webcrypto and text-encoding are not included by default, you must add it to your package.json!");
TRUST_WEBCRYPTO_OR_TEXT_ENCODING_NOT_INSTALLED;
}
}
module.exports = api
})(USE, './shim');
;USE(function(module){
const Buffer = USE('./buffer')
const settings = {}
// Encryption parameters
const pbkdf2 = { hash: 'SHA-256', iter: 100000, ks: 64 }
const ecdsaSignProps = { name: 'ECDSA', hash: { name: 'SHA-256' } }
const ecdsaKeyProps = { name: 'ECDSA', namedCurve: 'P-256' }
const ecdhKeyProps = { name: 'ECDH', namedCurve: 'P-256' }
const _initial_authsettings = {
validity: 12 * 60 * 60, // internally in seconds : 12 hours
hook: (props) => props // { iat, exp, alias, remember }
// or return new Promise((resolve, reject) => resolve(props)
}
// These are used to persist user's authentication "session"
const authsettings = Object.assign({}, _initial_authsettings)
// This creates Web Cryptography API compliant JWK for sign/verify purposes
const keysToEcdsaJwk = (pub, d) => { // d === priv
//const [ x, y ] = Buffer.from(pub, 'base64').toString('utf8').split(':') // old
const [ x, y ] = pub.split('.') // new
var jwk = { kty: "EC", crv: "P-256", x: x, y: y, ext: true }
jwk.key_ops = d ? ['sign'] : ['verify'];
if(d){ jwk.d = d }
return jwk;
}
Object.assign(settings, {
pbkdf2,
ecdsa: {
pair: ecdsaKeyProps,
sign: ecdsaSignProps
},
ecdh: ecdhKeyProps,
jwk: keysToEcdsaJwk,
recall: authsettings
})
module.exports = settings
})(USE, './settings');
;USE(function(module){
module.exports = (props) => {
try {
if(props.slice && 'SEA{' === props.slice(0,4)){
props = props.slice(3);
}
return props.slice ? JSON.parse(props) : props
} catch (e) {} //eslint-disable-line no-empty
return props
}
})(USE, './parse');
;USE(function(module){
const {
subtle, ossl = subtle, random: getRandomBytes, TextEncoder, TextDecoder
} = USE('./shim')
const Buffer = USE('./buffer')
const parse = USE('./parse')
const { pbkdf2 } = USE('./settings')
// This internal func returns SHA-256 hashed data for signing
const sha256hash = async (mm) => {
const m = parse(mm)
const hash = await ossl.digest({name: pbkdf2.hash}, new TextEncoder().encode(m))
return Buffer.from(hash)
}
module.exports = sha256hash
})(USE, './sha256');
;USE(function(module){
// This internal func returns SHA-1 hashed data for KeyID generation
const { subtle, ossl = subtle } = USE('./shim')
const sha1hash = (b) => ossl.digest({name: 'SHA-1'}, new ArrayBuffer(b))
module.exports = sha1hash
})(USE, './sha1');
;USE(function(module){
var SEA = USE('./root');
var shim = USE('./shim');
var S = USE('./settings');
var u;
SEA.work = async (data, pair, cb) => { try { // used to be named `proof`
var salt = pair.epub || pair; // epub not recommended, salt should be random!
if(salt instanceof Function){
cb = salt;
salt = u;
}
salt = salt || shim.random(9);
if (SEA.window) {
// For browser subtle works fine
const key = await shim.subtle.importKey(
'raw', new shim.TextEncoder().encode(data), { name: 'PBKDF2' }, false, ['deriveBits']
)
const result = await shim.subtle.deriveBits({
name: 'PBKDF2',
iterations: S.pbkdf2.iter,
salt: new shim.TextEncoder().encode(salt),
hash: S.pbkdf2.hash,
}, key, S.pbkdf2.ks * 8)
data = shim.random(data.length) // Erase data in case of passphrase
const r = shim.Buffer.from(result, 'binary').toString('utf8')
if(cb){ cb(r) }
return r;
}
// For NodeJS crypto.pkdf2 rocks
const hash = crypto.pbkdf2Sync(
data,
new shim.TextEncoder().encode(salt),
S.pbkdf2.iter,
S.pbkdf2.ks,
S.pbkdf2.hash.replace('-', '').toLowerCase()
)
data = shim.random(data.length) // Erase passphrase for app
const r = hash && hash.toString('utf8')
if(cb){ cb(r) }
return r;
} catch(e) {
SEA.err = e;
if(cb){ cb() }
return;
}}
module.exports = SEA.work;
})(USE, './work');
;USE(function(module){
var SEA = USE('./root');
var shim = USE('./shim');
var S = USE('./settings');
var Buff = (typeof Buffer !== 'undefined')? Buffer : shim.Buffer;
//SEA.pair = async (data, proof, cb) => { try {
SEA.pair = async (cb) => { try {
const ecdhSubtle = shim.ossl || shim.subtle
// First: ECDSA keys for signing/verifying...
const { pub, priv } = await shim.subtle.generateKey(S.ecdsa.pair, true, [ 'sign', 'verify' ])
.then(async (keys) => {
// privateKey scope doesn't leak out from here!
const { d: priv } = await shim.subtle.exportKey('jwk', keys.privateKey)
const { x, y } = await shim.subtle.exportKey('jwk', keys.publicKey)
//const pub = Buff.from([ x, y ].join(':')).toString('base64') // old
const pub = x+'.'+y // new
// x and y are already base64
// pub is UTF8 but filename/URL safe (https://www.ietf.org/rfc/rfc3986.txt)
// but split on a non-base64 letter.
return { pub, priv }
})
// To include PGPv4 kind of keyId:
// const pubId = await SEA.keyid(keys.pub)
// Next: ECDH keys for encryption/decryption...
const { epub, epriv } = await ecdhSubtle.generateKey(S.ecdh, true, ['deriveKey'])
.then(async (keys) => {
// privateKey scope doesn't leak out from here!
const { d: epriv } = await ecdhSubtle.exportKey('jwk', keys.privateKey)
const { x, y } = await ecdhSubtle.exportKey('jwk', keys.publicKey)
//const epub = Buff.from([ ex, ey ].join(':')).toString('base64') // old
const epub = x+'.'+y // new
// ex and ey are already base64
// epub is UTF8 but filename/URL safe (https://www.ietf.org/rfc/rfc3986.txt)
// but split on a non-base64 letter.
return { epub, epriv }
})
const r = { pub, priv, /* pubId, */ epub, epriv }
if(cb){ cb(r) }
return r;
} catch(e) {
SEA.err = e;
if(cb){ cb() }
return;
}}
module.exports = SEA.pair;
})(USE, './pair');
;USE(function(module){
var SEA = USE('./root');
var shim = USE('./shim');
var S = USE('./settings');
var sha256hash = USE('./sha256');
SEA.sign = async (data, pair, cb) => { try {
if(data.slice
&& 'SEA{' === data.slice(0,4)
&& '"m":' === data.slice(4,8)){
// TODO: This would prevent pair2 signing pair1's signature.
// So we may want to change this in the future.
// but for now, we want to prevent duplicate double signature.
if(cb){ cb(data) }
return data;
}
const pub = pair.pub
const priv = pair.priv
const jwk = S.jwk(pub, priv)
const msg = JSON.stringify(data)
const hash = await sha256hash(msg)
const sig = await shim.subtle.importKey('jwk', jwk, S.ecdsa.pair, false, ['sign'])
.then((key) => shim.subtle.sign(S.ecdsa.sign, key, new Uint8Array(hash))) // privateKey scope doesn't leak out from here!
const r = 'SEA'+JSON.stringify({m: msg, s: shim.Buffer.from(sig, 'binary').toString('utf8')});
if(cb){ cb(r) }
return r;
} catch(e) {
SEA.err = e;
if(cb){ cb() }
return;
}}
module.exports = SEA.sign;
})(USE, './sign');
;USE(function(module){
var SEA = USE('./root');
var shim = USE('./shim');
var S = USE('./settings');
var sha256hash = USE('./sha256');
var parse = USE('./parse');
var u;
SEA.verify = async (data, pair, cb) => { try {
const json = parse(data)
if(false === pair){ // don't verify!
const raw = (json !== data)?
(json.s && json.m)? parse(json.m) : data
: json;
if(cb){ cb(raw) }
return raw;
}
const pub = pair.pub || pair
const jwk = S.jwk(pub)
const key = await shim.subtle.importKey('jwk', jwk, S.ecdsa.pair, false, ['verify'])
const hash = await sha256hash(json.m)
const sig = new Uint8Array(shim.Buffer.from(json.s, 'utf8'))
const check = await shim.subtle.verify(S.ecdsa.sign, key, sig, new Uint8Array(hash))
if(!check){ throw "Signature did not match." }
const r = check? parse(json.m) : u;
if(cb){ cb(r) }
return r;
} catch(e) {
SEA.err = e;
if(cb){ cb() }
return;
}}
module.exports = SEA.verify;
})(USE, './verify');
;USE(function(module){
var shim = USE('./shim');
var sha256hash = USE('./sha256');
const importGen = async (key, salt) => {
//const combo = shim.Buffer.concat([shim.Buffer.from(key, 'utf8'), salt || shim.random(8)]).toString('utf8') // old
const combo = key + (salt || shim.random(8)).toString('utf8'); // new
const hash = shim.Buffer.from(await sha256hash(combo), 'binary')
return await shim.subtle.importKey('raw', new Uint8Array(hash), 'AES-CBC', false, ['encrypt', 'decrypt'])
}
module.exports = importGen;
})(USE, './aescbc');
;USE(function(module){
var SEA = USE('./root');
var shim = USE('./shim');
var S = USE('./settings');
var aescbckey = USE('./aescbc');
SEA.encrypt = async (data, pair, cb) => { try {
const key = pair.epriv || pair;
const msg = JSON.stringify(data)
const rand = {s: shim.random(8), iv: shim.random(16)};
const ct = await aescbckey(key, rand.s)
.then((aes) => shim.subtle.encrypt({ // Keeping the AES key scope as private as possible...
name: 'AES-CBC', iv: new Uint8Array(rand.iv)
}, aes, new shim.TextEncoder().encode(msg)))
const r = 'SEA'+JSON.stringify({
ct: shim.Buffer.from(ct, 'binary').toString('utf8'),
iv: rand.iv.toString('utf8'),
s: rand.s.toString('utf8')
});
if(cb){ cb(r) }
return r;
} catch(e) {
SEA.err = e;
if(cb){ cb() }
return;
}}
module.exports = SEA.encrypt;
})(USE, './encrypt');
;USE(function(module){
var SEA = USE('./root');
var shim = USE('./shim');
var S = USE('./settings');
var aescbckey = USE('./aescbc');
var parse = USE('./parse');
SEA.decrypt = async (data, pair, cb) => { try {
const key = pair.epriv || pair;
const json = parse(data)
const ct = await aescbckey(key, shim.Buffer.from(json.s, 'utf8'))
.then((aes) => shim.subtle.decrypt({ // Keeping aesKey scope as private as possible...
name: 'AES-CBC', iv: new Uint8Array(shim.Buffer.from(json.iv, 'utf8'))
}, aes, new Uint8Array(shim.Buffer.from(json.ct, 'utf8'))))
const r = parse(new shim.TextDecoder('utf8').decode(ct))
if(cb){ cb(r) }
return r;
} catch(e) {
SEA.err = e;
if(cb){ cb() }
return;
}}
module.exports = SEA.decrypt;
})(USE, './decrypt');
;USE(function(module){
var SEA = USE('./root');
var shim = USE('./shim');
var S = USE('./settings');
// Derive shared secret from other's pub and my epub/epriv
SEA.secret = async (key, pair, cb) => { try {
const pub = key.epub || key
const epub = pair.epub
const epriv = pair.epriv
const ecdhSubtle = shim.ossl || shim.subtle
const pubKeyData = keysToEcdhJwk(pub)
const props = {
...S.ecdh,
public: await ecdhSubtle.importKey(...pubKeyData, true, [])
}
const privKeyData = keysToEcdhJwk(epub, epriv)
const derived = await ecdhSubtle.importKey(...privKeyData, false, ['deriveKey'])
.then(async (privKey) => {
// privateKey scope doesn't leak out from here!
const derivedKey = await ecdhSubtle.deriveKey(props, privKey, { name: 'AES-CBC', length: 256 }, true, [ 'encrypt', 'decrypt' ])
return ecdhSubtle.exportKey('jwk', derivedKey).then(({ k }) => k)
})
const r = derived;
if(cb){ cb(r) }
return r;
} catch(e) {
SEA.err = e;
if(cb){ cb() }
return;
}}
const keysToEcdhJwk = (pub, d) => { // d === priv
//const [ x, y ] = Buffer.from(pub, 'base64').toString('utf8').split(':') // old
const [ x, y ] = pub.split('.') // new
const jwk = d ? { d } : {}
return [ // Use with spread returned value...
'jwk',
{ ...jwk, x, y, kty: 'EC', crv: 'P-256', ext: true }, // ??? refactor
S.ecdh
]
}
module.exports = SEA.secret;
})(USE, './secret');
;USE(function(module){
// Old Code...
const {
crypto,
subtle,
ossl,
random: getRandomBytes,
TextEncoder,
TextDecoder
} = USE('./shim')
const EasyIndexedDB = USE('./indexed')
const Buffer = USE('./buffer')
var settings = USE('./settings');
const {
pbkdf2: pbKdf2,
ecdsa: { pair: ecdsaKeyProps, sign: ecdsaSignProps },
ecdh: ecdhKeyProps,
jwk: keysToEcdsaJwk
} = USE('./settings')
const sha1hash = USE('./sha1')
const sha256hash = USE('./sha256')
const recallCryptoKey = USE('./remember')
const parseProps = USE('./parse')
// Practical examples about usage found from ./test/common.js
const SEA = USE('./root');
SEA.work = USE('./work');
SEA.sign = USE('./sign');
SEA.verify = USE('./verify');
SEA.encrypt = USE('./encrypt');
SEA.decrypt = USE('./decrypt');
SEA.random = getRandomBytes;
// This is easy way to use IndexedDB, all methods are Promises
// Note: Not all SEA interfaces have to support this.
SEA.EasyIndexedDB = EasyIndexedDB;
// This is Buffer used in SEA and usable from Gun/SEA application also.
// For documentation see https://nodejs.org/api/buffer.html
SEA.Buffer = Buffer;
// These SEA functions support now ony Promises or
// async/await (compatible) code, use those like Promises.
//
// Creates a wrapper library around Web Crypto API
// for various AES, ECDSA, PBKDF2 functions we called above.
// Calculate public key KeyID aka PGPv4 (result: 8 bytes as hex string)
SEA.keyid = async (pub) => {
try {
// base64('base64(x):base64(y)') => Buffer(xy)
const pb = Buffer.concat(
Buffer.from(pub, 'base64').toString('utf8').split(':')
.map((t) => Buffer.from(t, 'base64'))
)
// id is PGPv4 compliant raw key
const id = Buffer.concat([
Buffer.from([0x99, pb.length / 0x100, pb.length % 0x100]), pb
])
const sha1 = await sha1hash(id)
const hash = Buffer.from(sha1, 'binary')
return hash.toString('hex', hash.length - 8) // 16-bit ID as hex
} catch (e) {
console.log(e)
throw e
}
}
// all done!
// Obviously it is missing MANY necessary features. This is only an alpha release.
// Please experiment with it, audit what I've done so far, and complain about what needs to be added.
// SEA should be a full suite that is easy and seamless to use.
// Again, scroll naer the top, where I provide an EXAMPLE of how to create a user and sign in.
// Once logged in, the rest of the code you just read handled automatically signing/validating data.
// But all other behavior needs to be equally easy, like opinionated ways of
// Adding friends (trusted public keys), sending private messages, etc.
// Cheers! Tell me what you think.
var Gun = (SEA.window||{}).Gun || require('./gun');
Gun.SEA = SEA;
SEA.Gun = Gun;
module.exports = SEA
})(USE, './sea');
;USE(function(module){
var SEA = USE('./sea');
var Gun = SEA.Gun;
// This is internal func queries public key(s) for alias.
const queryGunAliases = (alias, gunRoot) => new Promise((resolve, reject) => {
// load all public keys associated with the username alias we want to log in with.
gunRoot.get(`alias/${alias}`).get((rat, rev) => {
rev.off();
if (!rat.put) {
// if no user, don't do anything.
const err = 'No user!'
Gun.log(err)
return reject({ err })
}
// then figuring out all possible candidates having matching username
const aliases = []
let c = 0
// TODO: how about having real chainable map without callback ?
Gun.obj.map(rat.put, (at, pub) => {
if (!pub.slice || 'pub/' !== pub.slice(0, 4)) {
// TODO: ... this would then be .filter((at, pub))
return
}
++c
// grab the account associated with this public key.
gunRoot.get(pub).get((at, ev) => {
pub = pub.slice(4)
ev.off()
--c
if (at.put){
aliases.push({ pub, at })
}
if (!c && (c = -1)) {
resolve(aliases)
}
})
})
if (!c) {
reject({ err: 'Public key does not exist!' })
}
})
})
module.exports = queryGunAliases
})(USE, './query');
;USE(function(module){
var SEA = USE('./sea');
var Gun = SEA.Gun;
const queryGunAliases = USE('./query')
const parseProps = USE('./parse')
// This is internal User authentication func.
const authenticate = async (alias, pass, gunRoot) => {
// load all public keys associated with the username alias we want to log in with.
const aliases = (await queryGunAliases(alias, gunRoot))
.filter(({ pub, at: { put } = {} } = {}) => !!pub && !!put)
// Got any?
if (!aliases.length) {
throw { err: 'Public key does not exist!' }
}
let err
// then attempt to log into each one until we find ours!
// (if two users have the same username AND the same password... that would be bad)
const [ user ] = await Promise.all(aliases.map(async ({ at, pub }) => {
// attempt to PBKDF2 extend the password with the salt. (Verifying the signature gives us the plain text salt.)
const auth = parseProps(at.put.auth)
// NOTE: aliasquery uses `gun.get` which internally SEA.read verifies the data for us, so we do not need to re-verify it here.
// SEA.verify(at.put.auth, pub).then(function(auth){
try {
const proof = await SEA.work(pass, auth.s)
const props = { pub, proof, at }
// the proof of work is evidence that we've spent some time/effort trying to log in, this slows brute force.
/*
MARK TO @mhelander : pub vs epub!???
*/
const { salt } = auth
const sea = await SEA.decrypt(auth.ek, proof)
if (!sea) {
err = 'Failed to decrypt secret!'
return
}
// now we have AES decrypted the private key, from when we encrypted it with the proof at registration.
// if we were successful, then that meanswe're logged in!
const { priv, epriv } = sea
const { epub } = at.put
// TODO: 'salt' needed?
err = null
if(typeof window !== 'undefined'){
var tmp = window.sessionStorage;
if(tmp && gunRoot._.opt.remember){
window.sessionStorage.alias = alias;
window.sessionStorage.tmp = pass;
}
}
return Object.assign(props, { priv, salt, epub, epriv })
} catch (e) {
err = 'Failed to decrypt secret!'
throw { err }
}
}))
if (!user) {
throw { err: err || 'Public key does not exist!' }
}
return user
}
module.exports = authenticate;
})(USE, './authenticate');
;USE(function(module){
// TODO: BUG! `SEA` needs to be USED!
const Gun = (typeof window !== 'undefined' ? window : global).Gun || USE('gun/gun')
const authsettings = USE('./settings')
const SEA = USE('./sea');
//const { scope: seaIndexedDb } = USE('./indexed')
// This updates sessionStorage & IndexedDB to persist authenticated "session"
const updateStorage = (proof, key, pin) => async (props) => {
if (!Gun.obj.has(props, 'alias')) {
return // No 'alias' - we're done.
}
if (authsettings.validity && proof && Gun.obj.has(props, 'iat')) {
props.proof = proof
delete props.remember // Not stored if present
const { alias, alias: id } = props
const remember = { alias, pin }
try {
const signed = await SEA.sign(JSON.stringify(remember), key)
sessionStorage.setItem('user', alias)
sessionStorage.setItem('remember', signed)
const encrypted = await SEA.encrypt(props, pin)
if (encrypted) {
const auth = await SEA.sign(encrypted, key)
await seaIndexedDb.wipe() // NO! Do not do this. It ruins other people's sessionStorage code. This is bad/wrong, commenting it out.
await seaIndexedDb.put(id, { auth })
}
return props
} catch (err) {
throw { err: 'Session persisting failed!' }
}
}
// Wiping IndexedDB completely when using random PIN
await seaIndexedDb.wipe() // NO! Do not do this. It ruins other people's sessionStorage code. This is bad/wrong, commenting it out.
// And remove sessionStorage data
sessionStorage.removeItem('user')
sessionStorage.removeItem('remember')
return props
}
module.exports = updateStorage
})(USE, './update');
;USE(function(module){
const Gun = (typeof window !== 'undefined' ? window : global).Gun || USE('gun/gun')
const Buffer = USE('./buffer')
const authsettings = USE('./settings')
const updateStorage = USE('./update')
// This internal func persists User authentication if so configured
const authPersist = async (user, proof, opts) => {
// opts = { pin: 'string' }
// no opts.pin then uses random PIN
// How this works:
// called when app bootstraps, with wanted options
// IF authsettings.validity === 0 THEN no remember-me, ever
// IF PIN then signed 'remember' to window.sessionStorage and 'auth' to IndexedDB
const pin = Buffer.from(
(Gun.obj.has(opts, 'pin') && opts.pin) || Gun.text.random(10),
'utf8'
).toString('base64')
const { alias } = user || {}
const { validity: exp } = authsettings // seconds // @mhelander what is `exp`???
if (proof && alias && exp) {
const iat = Math.ceil(Date.now() / 1000) // seconds
const remember = Gun.obj.has(opts, 'pin') || undefined // for hook - not stored
const props = authsettings.hook({ alias, iat, exp, remember })
const { pub, epub, sea: { priv, epriv } } = user
const key = { pub, priv, epub, epriv }
if (props instanceof Promise) {
const asyncProps = await props.then()
return await updateStorage(proof, key, pin)(asyncProps)
}
return await updateStorage(proof, key, pin)(props)
}
return await updateStorage()({ alias: 'delete' })
}
module.exports = authPersist
})(USE, './persist');
;USE(function(module){
const authPersist = USE('./persist')
// This internal func finalizes User authentication
const finalizeLogin = async (alias, key, gunRoot, opts) => {
const { user } = gunRoot._
// add our credentials in-memory only to our root gun instance
//var tmp = user._.tag;
user._ = key.at.gun._
//user._.tag = tmp || user._.tag;
// so that way we can use the credentials to encrypt/decrypt data
// that is input/output through gun (see below)
const { pub, priv, epub, epriv } = key
user._.is = user.is = {alias: alias, pub: pub};
Object.assign(user._, { alias, pub, epub, sea: { pub, priv, epub, epriv } })
//console.log("authorized", user._);
// persist authentication
//await authPersist(user._, key.proof, opts) // temporarily disabled
// emit an auth event, useful for page redirects and stuff.
try {
gunRoot._.on('auth', user._)
} catch (e) {
console.log('Your \'auth\' callback crashed with:', e)
}
// returns success with the user data credentials.
return user._
}
module.exports = finalizeLogin
})(USE, './login');
;USE(function(module){
// TODO: BUG! `SEA` needs to be USEd!
const Gun = (typeof window !== 'undefined' ? window : global).Gun || USE('gun/gun')
const Buffer = USE('./buffer')
const authsettings = USE('./settings')
//const { scope: seaIndexedDb } = USE('./indexed')
const queryGunAliases = USE('./query')
const parseProps = USE('./parse')
const updateStorage = USE('./update')
const SEA = USE('./sea')
const finalizeLogin = USE('./login')
// This internal func recalls persisted User authentication if so configured
const authRecall = async (gunRoot, authprops) => {
// window.sessionStorage only holds signed { alias, pin } !!!
const remember = authprops || sessionStorage.getItem('remember')
const { alias = sessionStorage.getItem('user'), pin: pIn } = authprops || {} // @mhelander what is pIn?
const pin = pIn && Buffer.from(pIn, 'utf8').toString('base64')
// Checks for existing proof, matching alias and expiration:
const checkRememberData = async ({ proof, alias: aLias, iat, exp, remember }) => {
if (!!proof && alias === aLias) {
const checkNotExpired = (args) => {
if (Math.floor(Date.now() / 1000) < (iat + args.exp)) {
// No way hook to update 'iat'
return Object.assign(args, { iat, proof })
} else {
Gun.log('Authentication expired!')
}
}
// We're not gonna give proof to hook!
const hooked = authsettings.hook({ alias, iat, exp, remember })
return ((hooked instanceof Promise)
&& await hooked.then(checkNotExpired)) || checkNotExpired(hooked)
}
}
const readAndDecrypt = async (data, pub, key) =>
parseProps(await SEA.decrypt(await SEA.verify(data, pub), key))
// Already authenticated?
if (gunRoot._.user
&& Gun.obj.has(gunRoot._.user._, 'pub')
&& Gun.obj.has(gunRoot._.user._, 'sea')) {
return gunRoot._.user._ // Yes, we're done here.
}
// No, got persisted 'alias'?
if (!alias) {
throw { err: 'No authentication session found!' }
}
// Yes, got persisted 'remember'?
if (!remember) {
throw { // And return proof if for matching alias
err: (await seaIndexedDb.get(alias, 'auth') && authsettings.validity
&& 'Missing PIN and alias!') || 'No authentication session found!'
}
}
// Yes, let's get (all?) matching aliases
const aliases = (await queryGunAliases(alias, gunRoot))
.filter(({ pub } = {}) => !!pub)
// Got any?
if (!aliases.length) {
throw { err: 'Public key does not exist!' }
}
let err
// Yes, then attempt to log into each one until we find ours!
// (if two users have the same username AND the same password... that would be bad)
const [ { key, at, proof, pin: newPin } = {} ] = await Promise
.all(aliases.filter(({ at: { put } = {} }) => !!put)
.map(async ({ at, pub }) => {
const readStorageData = async (args) => {
const props = args || parseProps(await SEA.verify(remember, pub, true))
let { pin, alias: aLias } = props
const data = (!pin && alias === aLias)
// No PIN, let's try short-term proof if for matching alias
? await checkRememberData(props)
// Got PIN so get IndexedDB secret if signature is ok
: await checkRememberData(await readAndDecrypt(await seaIndexedDb.get(alias, 'auth'), pub, pin))
pin = pin || data.pin
delete data.pin
return { pin, data }
}
// got pub, try auth with pin & alias :: or unwrap Storage data...
const { data, pin: newPin } = await readStorageData(pin && { pin, alias })
const { proof } = data || {}
if (!proof) {
if (!data) {
err = 'No valid authentication session found!'
return
}
try { // Wipes IndexedDB silently
await updateStorage()(data)
} catch (e) {} //eslint-disable-line no-empty
err = 'Expired session!'
return
}
try { // auth parsing or decryption fails or returns empty - silently done
const { auth } = at.put.auth
const sea = await SEA.decrypt(auth, proof)
if (!sea) {
err = 'Failed to decrypt private key!'
return
}
const { priv, epriv } = sea
const { epub } = at.put
// Success! we've found our private data!
err = null
return { proof, at, pin: newPin, key: { pub, priv, epriv, epub } }
} catch (e) {
err = 'Failed to decrypt private key!'
return
}
}).filter((props) => !!props))
if (!key) {
throw { err: err || 'Public key does not exist!' }
}
// now we have AES decrypted the private key,
// if we were successful, then that means we're logged in!
try {
await updateStorage(proof, key, newPin || pin)(key)
const user = Object.assign(key, { at, proof })
const pIN = newPin || pin
const pinProp = pIN && { pin: Buffer.from(pIN, 'base64').toString('utf8') }
return await finalizeLogin(alias, user, gunRoot, pinProp)
} catch (e) { // TODO: right log message ?
Gun.log('Failed to finalize login with new password!')
const { err = '' } = e || {}
throw { err: `Finalizing new password login failed! Reason: ${err}` }
}
}
module.exports = authRecall
})(USE, './recall');
;USE(function(module){
const authPersist = USE('./persist')
const authsettings = USE('./settings')
//const { scope: seaIndexedDb } = USE('./indexed')
// This internal func executes logout actions
const authLeave = async (gunRoot, alias = gunRoot._.user._.alias) => {
var user = gunRoot._.user._ || {};
[ 'get', 'soul', 'ack', 'put', 'is', 'alias', 'pub', 'epub', 'sea' ].map((key) => delete user[key])
if(user.gun){
delete user.gun.is;
}
// Let's use default
gunRoot.user();
// Removes persisted authentication & CryptoKeys
try {
await authPersist({ alias })
} catch (e) {} //eslint-disable-line no-empty
return { ok: 0 }
}
module.exports = authLeave
})(USE, './leave');
;USE(function(module){
var Gun = USE('./sea').Gun;
Gun.chain.then = function(cb){
var gun = this, p = (new Promise(function(res, rej){
gun.once(res);
}));
return cb? p.then(cb) : p;
}
})(USE, './then');
;USE(function(module){
var SEA = USE('./sea');
var Gun = SEA.Gun;
var then = USE('./then');
function User(){
this._ = {gun: this}
Gun.call()
}
User.prototype = (function(){ function F(){}; F.prototype = Gun.chain; return new F() }()) // Object.create polyfill
User.prototype.constructor = User;
// let's extend the gun chain with a `user` function.
// only one user can be logged in at a time, per gun instance.
Gun.chain.user = function(pub){
var gun = this, root = gun.back(-1);
if(pub){ return root.get('pub/'+pub) }
return root.back('user') || ((root._).user = gun.chain(new User));
}
module.exports = User;
})(USE, './user');
;USE(function(module){
// TODO: This needs to be split into all separate functions.
// Not just everything thrown into 'create'.
const SEA = USE('./sea')
const User = USE('./user')
const authRecall = USE('./recall')
const authsettings = USE('./settings')
const authenticate = USE('./authenticate')
const finalizeLogin = USE('./login')
const authLeave = USE('./leave')
const { recall: _initial_authsettings } = USE('./settings')
const Gun = SEA.Gun;
var u;
// Well first we have to actually create a user. That is what this function does.
User.prototype.create = function(username, pass, cb){
// TODO: Needs to be cleaned up!!!
const gunRoot = this.back(-1)
var gun = this, cat = (gun._);
cb = cb || function(){};
if(cat.ing){
cb({err: Gun.log("User is already being created or authenticated!"), wait: true});
return gun;
}
cat.ing = true;
var resolve = function(){}, reject = resolve;
// Because more than 1 user might have the same username, we treat the alias as a list of those users.
if(cb){ resolve = reject = cb }
gunRoot.get(`alias/${username}`).get(async (at, ev) => {
ev.off()
if (at.put) {
// If we can enforce that a user name is already taken, it might be nice to try, but this is not guaranteed.
const err = 'User already created!'
Gun.log(err)
cat.ing = false;
gun.leave();
return reject({ err })
}
const salt = Gun.text.random(64)
// pseudo-randomly create a salt, then use CryptoJS's PBKDF2 function to extend the password with it.
try {
const proof = await SEA.work(pass, salt)
// this will take some short amount of time to produce a proof, which slows brute force attacks.
const pairs = await SEA.pair()
// now we have generated a brand new ECDSA key pair for the user account.
const { pub, priv, epriv } = pairs
// the user's public key doesn't need to be signed. But everything else needs to be signed with it!
const alias = await SEA.sign(username, pairs)
if(u === alias){ throw SEA.err }
const epub = await SEA.sign(pairs.epub, pairs)
if(u === epub){ throw SEA.err }
// to keep the private key safe, we AES encrypt it with the proof of work!
const auth = await SEA.encrypt({ priv, epriv }, proof)
.then((auth) => // TODO: So signedsalt isn't needed?
// SEA.sign(salt, pairs).then((signedsalt) =>
SEA.sign({ek: auth, s: salt}, pairs)
// )
).catch((e) => { Gun.log('SEA.en or SEA.write calls failed!'); cat.ing = false; gun.leave(); reject(e) })
const user = { alias, pub, epub, auth }
const tmp = `pub/${pairs.pub}`
// awesome, now we can actually save the user with their public key as their ID.
try{
gunRoot.get(tmp).put(user)
}catch(e){console.log(e)}
// next up, we want to associate the alias with the public key. So we add it to the alias list.
gunRoot.get(`alias/${username}`).put(Gun.obj.put({}, tmp, Gun.val.rel.ify(tmp)))
// callback that the user has been created. (Note: ok = 0 because we didn't wait for disk to ack)
setTimeout(() => { cat.ing = false; resolve({ ok: 0, pub: pairs.pub}) }, 10) // TODO: BUG! If `.auth` happens synchronously after `create` finishes, auth won't work. This setTimeout is a temporary hack until we can properly fix it.
} catch (e) {
Gun.log('SEA.create failed!')
cat.ing = false;
gun.leave();
reject(e)
}
})
return gun; // gun chain commands must return gun chains!
}
// now that we have created a user, we want to authenticate them!
User.prototype.auth = function(alias, pass, cb, opt){
// TODO: Needs to be cleaned up!!!!
const opts = opt || (typeof cb !== 'function' && cb)
let { pin, newpass } = opts || {}
const gunRoot = this.back(-1)
cb = typeof cb === 'function' ? cb : () => {}
newpass = newpass || (opts||{}).change;
var gun = this, cat = (gun._);
if(cat.ing){
cb({err: "User is already being created or authenticated!", wait: true});
return gun;
}
cat.ing = true;
if (!pass && pin) { (async function(){
try {
var r = await authRecall(gunRoot, { alias, pin })
return cat.ing = false, cb(r), gun;
} catch (e) {
var err = { err: 'Auth attempt failed! Reason: No session data for alias & PIN' }
return cat.ing = false, gun.leave(), cb(err), gun;
}}())
return gun;
}
const putErr = (msg) => (e) => {
const { message, err = message || '' } = e
Gun.log(msg)
var error = { err: `${msg} Reason: ${err}` }
return cat.ing = false, gun.leave(), cb(error), gun;
}
(async function(){ try {
const keys = await authenticate(alias, pass, gunRoot)
if (!keys) {
return putErr('Auth attempt failed!')({ message: 'No keys' })
}
const { pub, priv, epub, epriv } = keys
// we're logged in!
if (newpass) {
// password update so encrypt private key using new pwd + salt
try {
const salt = Gun.text.random(64);
const encSigAuth = await SEA.work(newpass, salt)
.then((key) =>
SEA.encrypt({ priv, epriv }, key)
.then((auth) => SEA.sign({ek: auth, s: salt}, keys))
)
const signedEpub = await SEA.sign(epub, keys)
const signedAlias = await SEA.sign(alias, keys)
const user = {
pub,
alias: signedAlias,
auth: encSigAuth,
epub: signedEpub
}
// awesome, now we can update the user using public key ID.
gunRoot.get(`pub/${user.pub}`).put(user)
// then we're done
const login = finalizeLogin(alias, keys, gunRoot, { pin })
login.catch(putErr('Failed to finalize login with new password!'))
return cat.ing = false, cb(await login), gun
} catch (e) {
return putErr('Password set attempt failed!')(e)
}
} else {
const login = finalizeLogin(alias, keys, gunRoot, { pin })
login.catch(putErr('Finalizing login failed!'))
return cat.ing = false, cb(await login), gun;
}
} catch (e) {
return putErr('Auth attempt failed!')(e)
} }());
return gun;
}
User.prototype.pair = function(){
var user = this;
if(!user.is){ return false }
return user._.sea;
}
User.prototype.leave = async function(){
return await authLeave(this.back(-1))
}
// If authenticated user wants to delete his/her account, let's support it!
User.prototype.delete = async function(alias, pass){
const gunRoot = this.back(-1)
try {
const { pub } = await authenticate(alias, pass, gunRoot)
await authLeave(gunRoot, alias)
// Delete user data
gunRoot.get(`pub/${pub}`).put(null)
// Wipe user data from memory
const { user = { _: {} } } = gunRoot._;
// TODO: is this correct way to 'logout' user from Gun.User ?
[ 'alias', 'sea', 'pub' ].map((key) => delete user._[key])
user._.is = user.is = {}
gunRoot.user()
return { ok: 0 } // TODO: proper return codes???
} catch (e) {
Gun.log('User.delete failed! Error:', e)
throw e // TODO: proper error codes???
}
}
// If authentication is to be remembered over reloads or browser closing,
// set validity time in minutes.
User.prototype.recall = async function(setvalidity, options){
const gunRoot = this.back(-1)
let validity
let opts
var o = setvalidity;
if(o && o.sessionStorage){
if(typeof window !== 'undefined'){
var tmp = window.sessionStorage;
if(tmp){
gunRoot._.opt.remember = true;
if(tmp.alias && tmp.tmp){
gunRoot.user().auth(tmp.alias, tmp.tmp);
}
}
}
return this;
}
if (!Gun.val.is(setvalidity)) {
opts = setvalidity
validity = _initial_authsettings.validity
} else {
opts = options
validity = setvalidity * 60 // minutes to seconds
}
try {
// opts = { hook: function({ iat, exp, alias, proof }) }
// iat == Date.now() when issued, exp == seconds to expire from iat
// How this works:
// called when app bootstraps, with wanted options
// IF authsettings.validity === 0 THEN no remember-me, ever
// IF PIN then signed 'remember' to window.sessionStorage and 'auth' to IndexedDB
authsettings.validity = typeof validity !== 'undefined'
? validity : _initial_authsettings.validity
authsettings.hook = (Gun.obj.has(opts, 'hook') && typeof opts.hook === 'function')
? opts.hook : _initial_authsettings.hook
// All is good. Should we do something more with actual recalled data?
return await authRecall(gunRoot)
} catch (e) {
const err = 'No session!'
Gun.log(err)
// NOTE! It's fine to resolve recall with reason why not successful
// instead of rejecting...
return { err: (e && e.err) || err }
}
}
User.prototype.alive = async function(){
const gunRoot = this.back(-1)
try {
// All is good. Should we do something more with actual recalled data?
await authRecall(gunRoot)
return gunRoot._.user._
} catch (e) {
const err = 'No session!'
Gun.log(err)
throw { err }
}
}
User.prototype.trust = async function(user){
// TODO: BUG!!! SEA `node` read listener needs to be async, which means core needs to be async too.
//gun.get('alice').get('age').trust(bob);
if (Gun.is(user)) {
user.get('pub').get((ctx, ev) => {
console.log(ctx, ev)
})
}
}
User.prototype.grant = function(to, cb){
console.log("`.grant` API MAY BE DELETED OR CHANGED OR RENAMED, DO NOT USE!");
var gun = this, user = gun.back(-1).user(), pair = user.pair(), path = '';
gun.back(function(at){ if(at.pub){ return } path += (at.get||'') });
(async function(){
var enc, sec = await user.get('trust').get(pair.pub).get(path).then();
sec = await SEA.decrypt(sec, pair);
if(!sec){
sec = SEA.random(16).toString();
enc = await SEA.encrypt(sec, pair);
user.get('trust').get(pair.pub).get(path).put(enc);
}
var pub = to.get('pub').then();
var epub = to.get('epub').then();
pub = await pub; epub = await epub;
var dh = await SEA.secret(epub, pair);
enc = await SEA.encrypt(sec, dh);
user.get('trust').get(pub).get(path).put(enc, cb);
}());
return gun;
}
User.prototype.secret = function(data, cb){
console.log("`.secret` API MAY BE DELETED OR CHANGED OR RENAMED, DO NOT USE!");
var gun = this, user = gun.back(-1).user(), pair = user.pair(), path = '';
gun.back(function(at){ if(at.pub){ return } path += (at.get||'') });
(async function(){
var enc, sec = await user.get('trust').get(pair.pub).get(path).then();
sec = await SEA.decrypt(sec, pair);
if(!sec){
sec = SEA.random(16).toString();
enc = await SEA.encrypt(sec, pair);
user.get('trust').get(pair.pub).get(path).put(enc);
}
enc = await SEA.encrypt(data, sec);
gun.put(enc, cb);
}());
return gun;
}
module.exports = User
})(USE, './create');
;USE(function(module){
const Gun = (typeof window !== 'undefined' ? window : global).Gun || USE('gun/gun')
const SEA = USE('./sea')
// After we have a GUN extension to make user registration/login easy, we then need to handle everything else.
// We do this with a GUN adapter, we first listen to when a gun instance is created (and when its options change)
Gun.on('opt', function(at){
if(!at.sea){ // only add SEA once per instance, on the "at" context.
at.sea = {own: {}};
var uuid = at.opt.uuid || Gun.state.lex;
at.opt.uuid = function(cb){ // TODO: consider async/await and drop callback pattern...
var id = uuid(), pub = at.user;
if(!pub || !(pub = at.user._.sea) || !(pub = pub.pub)){ return id }
id = id + '~' + pub;
if(cb && cb.call){ cb(null, id) }
return id;
}
at.on('in', security, at); // now listen to all input data, acting as a firewall.
at.on('out', signature, at); // and output listeners, to encrypt outgoing data.
at.on('node', each, at);
}
this.to.next(at); // make sure to call the "next" middleware adapter.
});
// Alright, this next adapter gets run at the per node level in the graph database.
// This will let us verify that every property on a node has a value signed by a public key we trust.
// If the signature does not match, the data is just `undefined` so it doesn't get passed on.
// If it does match, then we transform the in-memory "view" of the data into its plain value (without the signature).
// Now NOTE! Some data is "system" data, not user data. Example: List of public keys, aliases, etc.
// This data is self-enforced (the value can only match its ID), but that is handled in the `security` function.
// From the self-enforced data, we can see all the edges in the graph that belong to a public key.
// Example: pub/ASDF is the ID of a node with ASDF as its public key, signed alias and salt, and
// its encrypted private key, but it might also have other signed values on it like `profile = <ID>` edge.
// Using that directed edge's ID, we can then track (in memory) which IDs belong to which keys.
// Here is a problem: Multiple public keys can "claim" any node's ID, so this is dangerous!
// This means we should ONLY trust our "friends" (our key ring) public keys, not any ones.
// I have not yet added that to SEA yet in this alpha release. That is coming soon, but beware in the meanwhile!
function each(msg){ // TODO: Warning: Need to switch to `gun.on('node')`! Do not use `Gun.on('node'` in your apps!
// NOTE: THE SECURITY FUNCTION HAS ALREADY VERIFIED THE DATA!!!
// WE DO NOT NEED TO RE-VERIFY AGAIN, JUST TRANSFORM IT TO PLAINTEXT.
var to = this.to, vertex = (msg.gun._).put, c = 0, d;
Gun.node.is(msg.put, function(val, key, node){ c++; // for each property on the node
// TODO: consider async/await use here...
SEA.verify(val, false, function(data){ c--; // false just extracts the plain data.
node[key] = val = data; // transform to plain value.
if(d && !c && (c = -1)){ to.next(msg) }
});
});
d = true;
if(d && !c){ to.next(msg) }
return;
}
// signature handles data output, it is a proxy to the security function.
function signature(msg){
if(msg.user){
return this.to.next(msg);
}
var ctx = this.as;
msg.user = ctx.user;
security.call(this, msg);
}
// okay! The security function handles all the heavy lifting.
// It needs to deal read and write of input and output of system data, account/public key data, and regular data.
// This is broken down into some pretty clear edge cases, let's go over them:
function security(msg){
var at = this.as, sea = at.sea, to = this.to;
if(msg.get){
// if there is a request to read data from us, then...
var soul = msg.get['#'];
if(soul){ // for now, only allow direct IDs to be read.
if('alias' === soul){ // Allow reading the list of usernames/aliases in the system?
return to.next(msg); // yes.
} else
if('alias/' === soul.slice(0,6)){ // Allow reading the list of public keys associated with an alias?
return to.next(msg); // yes.
} else { // Allow reading everything?
return to.next(msg); // yes // TODO: No! Make this a callback/event that people can filter on.
}
}
}
if(msg.put){
// potentially parallel async operations!!!
var check = {}, each = {}, u;
each.node = function(node, soul){
if(Gun.obj.empty(node, '_')){ return check['node'+soul] = 0 } // ignore empty updates, don't reject them.
Gun.obj.map(node, each.way, {soul: soul, node: node});
};
each.way = function(val, key){
var soul = this.soul, node = this.node, tmp;
if('_' === key){ return } // ignore meta data
if('alias' === soul){ // special case for shared system data, the list of aliases.
each.alias(val, key, node, soul); return;
}
if('alias/' === soul.slice(0,6)){ // special case for shared system data, the list of public keys for an alias.
each.pubs(val, key, node, soul); return;
}
if('pub/' === soul.slice(0,4)){ // special case, account data for a public key.
each.pub(val, key, node, soul, soul.slice(4), msg.user); return;
}
each.any(val, key, node, soul, msg.user); return;
return each.end({err: "No other data allowed!"});
};
each.alias = function(val, key, node, soul){ // Example: {_:#alias, alias/alice: {#alias/alice}}
if(!val){ return each.end({err: "Data must exist!"}) } // data MUST exist
if('alias/'+key === Gun.val.rel.is(val)){ return check['alias'+key] = 0 } // in fact, it must be EXACTLY equal to itself
each.end({err: "Mismatching alias."}); // if it isn't, reject.
};
each.pubs = function(val, key, node, soul){ // Example: {_:#alias/alice, pub/asdf: {#pub/asdf}}
if(!val){ return each.end({err: "Alias must exist!"}) } // data MUST exist
if(key === Gun.val.rel.is(val)){ return check['pubs'+soul+key] = 0 } // and the ID must be EXACTLY equal to its property
each.end({err: "Alias must match!"}); // that way nobody can tamper with the list of public keys.
};
each.pub = function(val, key, node, soul, pub, user){ // Example: {_:#pub/asdf, hello:SEA['world',fdsa]}
if('pub' === key){
if(val === pub){ return (check['pub'+soul+key] = 0) } // the account MUST match `pub` property that equals the ID of the public key.
return each.end({err: "Account must match!"});
}
check['user'+soul+key] = 1;
if(user && (user = user._) && user.sea && pub === user.pub){
//var id = Gun.text.random(3);
SEA.sign(val, user.sea, function(data){ var rel;
if(u === data){ return each.end({err: SEA.err || 'Pub signature fail.'}) }
if(rel = Gun.val.rel.is(val)){
(at.sea.own[rel] = at.sea.own[rel] || {})[pub] = true;
}
node[key] = data;
check['user'+soul+key] = 0;
each.end({ok: 1});
});
// TODO: Handle error!!!!
return;
}
// TODO: consider async/await and drop callback pattern...
SEA.verify(val, pub, function(data){ var rel, tmp;
if(u === data){ // make sure the signature matches the account it claims to be on.
return each.end({err: "Unverified data."}); // reject any updates that are signed with a mismatched account.
}
if((rel = Gun.val.rel.is(data)) && (tmp = rel.split('~')) && 2 === tmp.length){
if(pub === tmp[1]){
(at.sea.own[rel] = at.sea.own[rel] || {})[pub] = true;
}
}
check['user'+soul+key] = 0;
each.end({ok: 1});
});
};
each.any = function(val, key, node, soul, user){ var tmp, pub;
if(!user || !(user = user._) || !(user = user.sea)){
if((tmp = soul.split('~')) && 2 == tmp.length){
check['any'+soul+key] = 1;
SEA.verify(val, (pub = tmp[1]), function(data){ var rel;
if(!data){ return each.end({err: "Mismatched owner on '" + key + "'."}) }
if((rel = Gun.val.rel.is(data)) && (tmp = rel.split('~')) && 2 === tmp.length){
if(pub === tmp[1]){
(at.sea.own[rel] = at.sea.own[rel] || {})[pub] = true;
}
}
check['any'+soul+key] = 0;
each.end({ok: 1});
});
return;
}
check['any'+soul+key] = 1;
at.on('secure', function(msg){ this.off();
check['any'+soul+key] = 0;
if(at.opt.secure){ msg = null }
each.end(msg || {err: "Data cannot be modified."});
}).on.on('secure', msg);
//each.end({err: "Data cannot be modified."});
return;
}
if(!(tmp = soul.split('~')) || 2 !== tmp.length){
if(at.opt.secure){
each.end({err: "Soul is missing public key at '" + key + "'."});
return;
}
if(val && val.slice && 'SEA{' === (val).slice(0,4)){
check['any'+soul+key] = 0;
each.end({ok: 1});
return;
}
check['any'+soul+key] = 1;
SEA.sign(val, user, function(data){
if(u === data){ return each.end({err: 'Any signature failed.'}) }
node[key] = data;
check['any'+soul+key] = 0;
each.end({ok: 1});
});
return;
}
var pub = tmp[1];
if(pub !== user.pub){
each.any(val, key, node, soul);
return;
}
/*var other = Gun.obj.map(at.sea.own[soul], function(v, p){
if(user.pub !== p){ return p }
});
if(other){
each.any(val, key, node, soul);
return;
}*/
check['any'+soul+key] = 1;
SEA.sign(val, user, function(data){
if(u === data){ return each.end({err: 'My signature fail.'}) }
node[key] = data;
check['any'+soul+key] = 0;
each.end({ok: 1});
});
}
each.end = function(ctx){ // TODO: Can't you just switch this to each.end = cb?
if(each.err){ return }
if((each.err = ctx.err) || ctx.no){
console.log('NO!', each.err, msg.put);
return;
}
if(!each.end.ed){ return }
if(Gun.obj.map(check, function(no){
if(no){ return true }
})){ return }
to.next(msg);
};
Gun.obj.map(msg.put, each.node);
each.end({end: each.end.ed = true});
return; // need to manually call next after async.
}
to.next(msg); // pass forward any data we do not know how to handle or process (this allows custom security protocols).
}
})(USE, './index');
}());