;(function(){
/* UNBUILD */
function USE(arg, req){
return req? require(arg) : 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 MODULE = module }
/* UNBUILD */
;USE(function(module){
// Security, Encryption, and Authorization: SEA.js
// MANDATORY READING: https://gun.eco/explainers/data/security.html
// IT IS IMPLEMENTED IN A POLYFILL/SHIM APPROACH.
// THIS IS AN EARLY ALPHA!
if(typeof self !== "undefined"){ module.window = self } // should be safe for at least browser/worker/nodejs, need to check other envs like RN etc.
if(typeof window !== "undefined"){ module.window = window }
var tmp = module.window || module, u;
var SEA = tmp.SEA || {};
if(SEA.window = module.window){ SEA.window.SEA = SEA }
try{ if(u+'' !== typeof MODULE){ MODULE.exports = SEA } }catch(e){}
module.exports = SEA;
})(USE, './root');
;USE(function(module){
var SEA = USE('./root');
try{ if(SEA.window){
if(location.protocol.indexOf('s') < 0
&& location.host.indexOf('localhost') < 0
&& ! /^127\.\d+\.\d+\.\d+$/.test(location.hostname)
&& location.protocol.indexOf('file:') < 0){
console.warn('HTTPS needed for WebCrypto in SEA, redirecting...');
location.protocol = 'https:'; // WebCrypto does NOT work without HTTPS!
}
} }catch(e){}
})(USE, './https');
;USE(function(module){
var u;
if(u+''== typeof btoa){
if(u+'' == typeof Buffer){
try{ global.Buffer = USE("buffer", 1).Buffer }catch(e){ console.log("Please `npm install buffer` or add it to your package.json !") }
}
global.btoa = function(data){ return Buffer.from(data, "binary").toString("base64") };
global.atob = function(data){ return Buffer.from(data, "base64").toString("binary") };
}
})(USE, './base64');
;USE(function(module){
USE('./base64');
// 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, start, end) { enc = enc || 'utf8'; start = start || 0;
const length = this.length
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){
USE('./base64');
// 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 || arguments[0]==null) {
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' || 'binary' === enc) { // EDIT BY MARK: I think this is safe, tested it against a couple "binary" strings. This lets SafeBuffer match NodeJS Buffer behavior more where it safely btoas regular strings.
const length = input.length
const words = new Uint16Array(length)
Array.from({ length: length }, (_, i) => words[i] = input.charCodeAt(i))
buf = SeaArray.from(words)
} else if (enc === 'base64') {
const dec = atob(input)
const length = dec.length
const bytes = new Uint8Array(length)
Array.from({ length: length }, (_, i) => bytes[i] = dec.charCodeAt(i))
buf = SeaArray.from(bytes)
} else if (enc === 'binary') { // deprecated by above comment
buf = SeaArray.from(input) // some btoas were mishandled.
} else {
console.info('SafeBuffer.from unknown encoding: '+enc)
}
return buf
}
const byteLength = input.byteLength // what is going on here? FOR MARTTI
const length = input.byteLength ? input.byteLength : input.length
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: 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 : 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 SEA = USE('./root')
const api = {Buffer: USE('./buffer')}
var o = {}, u;
// ideally we can move away from JSON entirely? unlikely due to compatibility issues... oh well.
JSON.parseAsync = JSON.parseAsync || function(t,cb,r){ var u; try{ cb(u, JSON.parse(t,r)) }catch(e){ cb(e) } }
JSON.stringifyAsync = JSON.stringifyAsync || function(v,cb,r,s){ var u; try{ cb(u, JSON.stringify(v,r,s)) }catch(e){ cb(e) } }
api.parse = function(t,r){ return new Promise(function(res, rej){
JSON.parseAsync(t,function(err, raw){ err? rej(err) : res(raw) },r);
})}
api.stringify = function(v,r,s){ return new Promise(function(res, rej){
JSON.stringifyAsync(v,function(err, raw){ err? rej(err) : res(raw) },r,s);
})}
if(SEA.window){
api.crypto = SEA.window.crypto || SEA.window.msCrypto
api.subtle = (api.crypto||o).subtle || (api.crypto||o).webkitSubtle;
api.TextEncoder = SEA.window.TextEncoder;
api.TextDecoder = SEA.window.TextDecoder;
api.random = (len) => api.Buffer.from(api.crypto.getRandomValues(new Uint8Array(api.Buffer.alloc(len))));
}
if(!api.TextDecoder)
{
const { TextEncoder, TextDecoder } = USE((u+'' == typeof MODULE?'.':'')+'./lib/text-encoding', 1);
api.TextDecoder = TextDecoder;
api.TextEncoder = TextEncoder;
}
if(!api.crypto)
{
try
{
var crypto = USE('crypto', 1);
Object.assign(api, {
crypto,
random: (len) => api.Buffer.from(crypto.randomBytes(len))
});
const { Crypto: WebCrypto } = USE('@peculiar/webcrypto', 1);
api.ossl = api.subtle = new WebCrypto({directory: 'ossl'}).subtle // ECDH
}
catch(e){
console.log("Please `npm install @peculiar/webcrypto` or add it to your package.json !");
}}
module.exports = api
})(USE, './shim');
;USE(function(module){
var SEA = USE('./root');
var shim = USE('./shim');
var s = {};
s.pbkdf2 = {hash: {name : 'SHA-256'}, iter: 100000, ks: 64};
s.ecdsa = {
pair: {name: 'ECDSA', namedCurve: 'P-256'},
sign: {name: 'ECDSA', hash: {name: 'SHA-256'}}
};
s.ecdh = {name: 'ECDH', namedCurve: 'P-256'};
// This creates Web Cryptography API compliant JWK for sign/verify purposes
s.jwk = function(pub, d){ // d === priv
pub = pub.split('.');
var x = pub[0], y = pub[1];
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;
};
s.keyToJwk = function(keyBytes) {
const keyB64 = keyBytes.toString('base64');
const k = keyB64.replace(/\+/g, '-').replace(/\//g, '_').replace(/\=/g, '');
return { kty: 'oct', k: k, ext: false, alg: 'A256GCM' };
}
s.recall = {
validity: 12 * 60 * 60, // internally in seconds : 12 hours
hook: function(props){ return props } // { iat, exp, alias, remember } // or return new Promise((resolve, reject) => resolve(props)
};
s.check = function(t){ return (typeof t == 'string') && ('SEA{' === t.slice(0,4)) }
s.parse = async function p(t){ try {
var yes = (typeof t == 'string');
if(yes && 'SEA{' === t.slice(0,4)){ t = t.slice(3) }
return yes ? await shim.parse(t) : t;
} catch (e) {}
return t;
}
SEA.opt = s;
module.exports = s
})(USE, './settings');
;USE(function(module){
var shim = USE('./shim');
module.exports = async function(d, o){
var t = (typeof d == 'string')? d : await shim.stringify(d);
var hash = await shim.subtle.digest({name: o||'SHA-256'}, new shim.TextEncoder().encode(t));
return shim.Buffer.from(hash);
}
})(USE, './sha256');
;USE(function(module){
// This internal func returns SHA-1 hashed data for KeyID generation
const __shim = USE('./shim')
const subtle = __shim.subtle
const ossl = __shim.ossl ? __shim.ossl : subtle
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 sha = USE('./sha256');
var u;
SEA.work = SEA.work || (async (data, pair, cb, opt) => { try { // used to be named `proof`
var salt = (pair||{}).epub || pair; // epub not recommended, salt should be random!
opt = opt || {};
if(salt instanceof Function){
cb = salt;
salt = u;
}
data = (typeof data == 'string')? data : await shim.stringify(data);
if('sha' === (opt.name||'').toLowerCase().slice(0,3)){
var rsha = shim.Buffer.from(await sha(data, opt.name), 'binary').toString(opt.encode || 'base64')
if(cb){ try{ cb(rsha) }catch(e){console.log(e)} }
return rsha;
}
salt = salt || shim.random(9);
var key = await (shim.ossl || shim.subtle).importKey('raw', new shim.TextEncoder().encode(data), {name: opt.name || 'PBKDF2'}, false, ['deriveBits']);
var work = await (shim.ossl || shim.subtle).deriveBits({
name: opt.name || 'PBKDF2',
iterations: opt.iterations || S.pbkdf2.iter,
salt: new shim.TextEncoder().encode(opt.salt || salt),
hash: opt.hash || S.pbkdf2.hash,
}, key, opt.length || (S.pbkdf2.ks * 8))
data = shim.random(data.length) // Erase data in case of passphrase
var r = shim.Buffer.from(work, 'binary').toString(opt.encode || 'base64')
if(cb){ try{ cb(r) }catch(e){console.log(e)} }
return r;
} catch(e) {
console.log(e);
SEA.err = e;
if(SEA.throw){ throw 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');
SEA.name = SEA.name || (async (cb, opt) => { try {
if(cb){ try{ cb() }catch(e){console.log(e)} }
return;
} catch(e) {
console.log(e);
SEA.err = e;
if(SEA.throw){ throw e }
if(cb){ cb() }
return;
}});
//SEA.pair = async (data, proof, cb) => { try {
SEA.pair = SEA.pair || (async (cb, opt) => { try {
var ecdhSubtle = shim.ossl || shim.subtle;
// First: ECDSA keys for signing/verifying...
var sa = await shim.subtle.generateKey({name: 'ECDSA', namedCurve: 'P-256'}, true, [ 'sign', 'verify' ])
.then(async (keys) => {
// privateKey scope doesn't leak out from here!
//const { d: priv } = await shim.subtle.exportKey('jwk', keys.privateKey)
var key = {};
key.priv = (await shim.subtle.exportKey('jwk', keys.privateKey)).d;
var pub = await shim.subtle.exportKey('jwk', keys.publicKey);
//const pub = Buff.from([ x, y ].join(':')).toString('base64') // old
key.pub = pub.x+'.'+pub.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 key;
})
// To include PGPv4 kind of keyId:
// const pubId = await SEA.keyid(keys.pub)
// Next: ECDH keys for encryption/decryption...
try{
var dh = await ecdhSubtle.generateKey({name: 'ECDH', namedCurve: 'P-256'}, true, ['deriveKey'])
.then(async (keys) => {
// privateKey scope doesn't leak out from here!
var key = {};
key.epriv = (await ecdhSubtle.exportKey('jwk', keys.privateKey)).d;
var pub = await ecdhSubtle.exportKey('jwk', keys.publicKey);
//const epub = Buff.from([ ex, ey ].join(':')).toString('base64') // old
key.epub = pub.x+'.'+pub.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 key;
})
}catch(e){
if(SEA.window){ throw e }
if(e == 'Error: ECDH is not a supported algorithm'){ console.log('Ignoring ECDH...') }
else { throw e }
} dh = dh || {};
var r = { pub: sa.pub, priv: sa.priv, /* pubId, */ epub: dh.epub, epriv: dh.epriv }
if(cb){ try{ cb(r) }catch(e){console.log(e)} }
return r;
} catch(e) {
console.log(e);
SEA.err = e;
if(SEA.throw){ throw 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 sha = USE('./sha256');
var u;
SEA.sign = SEA.sign || (async (data, pair, cb, opt) => { try {
opt = opt || {};
if(!(pair||opt).priv){
if(!SEA.I){ throw 'No signing key.' }
pair = await SEA.I(null, {what: data, how: 'sign', why: opt.why});
}
if(u === data){ throw '`undefined` not allowed.' }
var json = await S.parse(data);
var check = opt.check = opt.check || json;
if(SEA.verify && (SEA.opt.check(check) || (check && check.s && check.m))
&& u !== await SEA.verify(check, pair)){ // don't sign if we already signed it.
var r = await S.parse(check);
if(!opt.raw){ r = 'SEA' + await shim.stringify(r) }
if(cb){ try{ cb(r) }catch(e){console.log(e)} }
return r;
}
var pub = pair.pub;
var priv = pair.priv;
var jwk = S.jwk(pub, priv);
var hash = await sha(json);
var sig = await (shim.ossl || shim.subtle).importKey('jwk', jwk, {name: 'ECDSA', namedCurve: 'P-256'}, false, ['sign'])
.then((key) => (shim.ossl || shim.subtle).sign({name: 'ECDSA', hash: {name: 'SHA-256'}}, key, new Uint8Array(hash))) // privateKey scope doesn't leak out from here!
var r = {m: json, s: shim.Buffer.from(sig, 'binary').toString(opt.encode || 'base64')}
if(!opt.raw){ r = 'SEA' + await shim.stringify(r) }
if(cb){ try{ cb(r) }catch(e){console.log(e)} }
return r;
} catch(e) {
console.log(e);
SEA.err = e;
if(SEA.throw){ throw 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 sha = USE('./sha256');
var u;
SEA.verify = SEA.verify || (async (data, pair, cb, opt) => { try {
var json = await S.parse(data);
if(false === pair){ // don't verify!
var raw = await S.parse(json.m);
if(cb){ try{ cb(raw) }catch(e){console.log(e)} }
return raw;
}
opt = opt || {};
// SEA.I // verify is free! Requires no user permission.
var pub = pair.pub || pair;
var key = SEA.opt.slow_leak? await SEA.opt.slow_leak(pub) : await (shim.ossl || shim.subtle).importKey('jwk', S.jwk(pub), {name: 'ECDSA', namedCurve: 'P-256'}, false, ['verify']);
var hash = await sha(json.m);
var buf, sig, check, tmp; try{
buf = shim.Buffer.from(json.s, opt.encode || 'base64'); // NEW DEFAULT!
sig = new Uint8Array(buf);
check = await (shim.ossl || shim.subtle).verify({name: 'ECDSA', hash: {name: 'SHA-256'}}, key, sig, new Uint8Array(hash));
if(!check){ throw "Signature did not match." }
}catch(e){
if(SEA.opt.fallback){
return await SEA.opt.fall_verify(data, pair, cb, opt);
}
}
var r = check? await S.parse(json.m) : u;
if(cb){ try{ cb(r) }catch(e){console.log(e)} }
return r;
} catch(e) {
console.log(e); // mismatched owner FOR MARTTI
SEA.err = e;
if(SEA.throw){ throw e }
if(cb){ cb() }
return;
}});
module.exports = SEA.verify;
// legacy & ossl memory leak mitigation:
var knownKeys = {};
var keyForPair = SEA.opt.slow_leak = pair => {
if (knownKeys[pair]) return knownKeys[pair];
var jwk = S.jwk(pair);
knownKeys[pair] = (shim.ossl || shim.subtle).importKey("jwk", jwk, {name: 'ECDSA', namedCurve: 'P-256'}, false, ["verify"]);
return knownKeys[pair];
};
var O = SEA.opt;
SEA.opt.fall_verify = async function(data, pair, cb, opt, f){
if(f === SEA.opt.fallback){ throw "Signature did not match" } f = f || 1;
var tmp = data||'';
data = SEA.opt.unpack(data) || data;
var json = await S.parse(data), pub = pair.pub || pair, key = await SEA.opt.slow_leak(pub);
var hash = (f <= SEA.opt.fallback)? shim.Buffer.from(await shim.subtle.digest({name: 'SHA-256'}, new shim.TextEncoder().encode(await S.parse(json.m)))) : await sha(json.m); // this line is old bad buggy code but necessary for old compatibility.
var buf; var sig; var check; try{
buf = shim.Buffer.from(json.s, opt.encode || 'base64') // NEW DEFAULT!
sig = new Uint8Array(buf)
check = await (shim.ossl || shim.subtle).verify({name: 'ECDSA', hash: {name: 'SHA-256'}}, key, sig, new Uint8Array(hash))
if(!check){ throw "Signature did not match." }
}catch(e){ try{
buf = shim.Buffer.from(json.s, 'utf8') // AUTO BACKWARD OLD UTF8 DATA!
sig = new Uint8Array(buf)
check = await (shim.ossl || shim.subtle).verify({name: 'ECDSA', hash: {name: 'SHA-256'}}, key, sig, new Uint8Array(hash))
}catch(e){
if(!check){ throw "Signature did not match." }
}
}
var r = check? await S.parse(json.m) : u;
O.fall_soul = tmp['#']; O.fall_key = tmp['.']; O.fall_val = data; O.fall_state = tmp['>'];
if(cb){ try{ cb(r) }catch(e){console.log(e)} }
return r;
}
SEA.opt.fallback = 2;
})(USE, './verify');
;USE(function(module){
var shim = USE('./shim');
var S = USE('./settings');
var sha256hash = USE('./sha256');
const importGen = async (key, salt, opt) => {
//const combo = shim.Buffer.concat([shim.Buffer.from(key, 'utf8'), salt || shim.random(8)]).toString('utf8') // old
opt = opt || {};
const combo = key + (salt || shim.random(8)).toString('utf8'); // new
const hash = shim.Buffer.from(await sha256hash(combo), 'binary')
const jwkKey = S.keyToJwk(hash)
return await shim.subtle.importKey('jwk', jwkKey, {name:'AES-GCM'}, false, ['encrypt', 'decrypt'])
}
module.exports = importGen;
})(USE, './aeskey');
;USE(function(module){
var SEA = USE('./root');
var shim = USE('./shim');
var S = USE('./settings');
var aeskey = USE('./aeskey');
var u;
SEA.encrypt = SEA.encrypt || (async (data, pair, cb, opt) => { try {
opt = opt || {};
var key = (pair||opt).epriv || pair;
if(u === data){ throw '`undefined` not allowed.' }
if(!key){
if(!SEA.I){ throw 'No encryption key.' }
pair = await SEA.I(null, {what: data, how: 'encrypt', why: opt.why});
key = pair.epriv || pair;
}
var msg = (typeof data == 'string')? data : await shim.stringify(data);
var rand = {s: shim.random(9), iv: shim.random(15)}; // consider making this 9 and 15 or 18 or 12 to reduce == padding.
var ct = await aeskey(key, rand.s, opt).then((aes) => (/*shim.ossl ||*/ shim.subtle).encrypt({ // Keeping the AES key scope as private as possible...
name: opt.name || 'AES-GCM', iv: new Uint8Array(rand.iv)
}, aes, new shim.TextEncoder().encode(msg)));
var r = {
ct: shim.Buffer.from(ct, 'binary').toString(opt.encode || 'base64'),
iv: rand.iv.toString(opt.encode || 'base64'),
s: rand.s.toString(opt.encode || 'base64')
}
if(!opt.raw){ r = 'SEA' + await shim.stringify(r) }
if(cb){ try{ cb(r) }catch(e){console.log(e)} }
return r;
} catch(e) {
console.log(e);
SEA.err = e;
if(SEA.throw){ throw 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 aeskey = USE('./aeskey');
SEA.decrypt = SEA.decrypt || (async (data, pair, cb, opt) => { try {
opt = opt || {};
var key = (pair||opt).epriv || pair;
if(!key){
if(!SEA.I){ throw 'No decryption key.' }
pair = await SEA.I(null, {what: data, how: 'decrypt', why: opt.why});
key = pair.epriv || pair;
}
var json = await S.parse(data);
var buf, bufiv, bufct; try{
buf = shim.Buffer.from(json.s, opt.encode || 'base64');
bufiv = shim.Buffer.from(json.iv, opt.encode || 'base64');
bufct = shim.Buffer.from(json.ct, opt.encode || 'base64');
var ct = await aeskey(key, buf, opt).then((aes) => (/*shim.ossl ||*/ shim.subtle).decrypt({ // Keeping aesKey scope as private as possible...
name: opt.name || 'AES-GCM', iv: new Uint8Array(bufiv), tagLength: 128
}, aes, new Uint8Array(bufct)));
}catch(e){
if('utf8' === opt.encode){ throw "Could not decrypt" }
if(SEA.opt.fallback){
opt.encode = 'utf8';
return await SEA.decrypt(data, pair, cb, opt);
}
}
var r = await S.parse(new shim.TextDecoder('utf8').decode(ct));
if(cb){ try{ cb(r) }catch(e){console.log(e)} }
return r;
} catch(e) {
console.log(e);
SEA.err = e;
if(SEA.throw){ throw 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 = SEA.secret || (async (key, pair, cb, opt) => { try {
opt = opt || {};
if(!pair || !pair.epriv || !pair.epub){
if(!SEA.I){ throw 'No secret mix.' }
pair = await SEA.I(null, {what: key, how: 'secret', why: opt.why});
}
var pub = key.epub || key;
var epub = pair.epub;
var epriv = pair.epriv;
var ecdhSubtle = shim.ossl || shim.subtle;
var pubKeyData = keysToEcdhJwk(pub);
var props = Object.assign({ public: await ecdhSubtle.importKey(...pubKeyData, true, []) },{name: 'ECDH', namedCurve: 'P-256'}); // Thanks to @sirpy !
var privKeyData = keysToEcdhJwk(epub, epriv);
var derived = await ecdhSubtle.importKey(...privKeyData, false, ['deriveBits']).then(async (privKey) => {
// privateKey scope doesn't leak out from here!
var derivedBits = await ecdhSubtle.deriveBits(props, privKey, 256);
var rawBits = new Uint8Array(derivedBits);
var derivedKey = await ecdhSubtle.importKey('raw', rawBits,{ name: 'AES-GCM', length: 256 }, true, [ 'encrypt', 'decrypt' ]);
return ecdhSubtle.exportKey('jwk', derivedKey).then(({ k }) => k);
})
var r = derived;
if(cb){ try{ cb(r) }catch(e){console.log(e)} }
return r;
} catch(e) {
console.log(e);
SEA.err = e;
if(SEA.throw){ throw e }
if(cb){ cb() }
return;
}});
// can this be replaced with settings.jwk?
var keysToEcdhJwk = (pub, d) => { // d === priv
//var [ x, y ] = shim.Buffer.from(pub, 'base64').toString('utf8').split(':') // old
var [ x, y ] = pub.split('.') // new
var jwk = d ? { d: d } : {}
return [ // Use with spread returned value...
'jwk',
Object.assign(
jwk,
{ x: x, y: y, kty: 'EC', crv: 'P-256', ext: true }
), // ??? refactor
{name: 'ECDH', namedCurve: 'P-256'}
]
}
module.exports = SEA.secret;
})(USE, './secret');
;USE(function(module){
var SEA = USE('./root');
// This is to certify that a group of "certificants" can "put" anything at a group of matched "paths" to the certificate authority's graph
SEA.certify = SEA.certify || (async (certificants, policy = {}, authority, cb, opt = {}) => { try {
/*
The Certify Protocol was made out of love by a Vietnamese code enthusiast. Vietnamese people around the world deserve respect!
IMPORTANT: A Certificate is like a Signature. No one knows who (authority) created/signed a cert until you put it into their graph.
"certificants": '*' or a String (Bob.pub) || an Object that contains "pub" as a key || an array of [object || string]. These people will have the rights.
"policy": A string ('inbox'), or a RAD/LEX object {'*': 'inbox'}, or an Array of RAD/LEX objects or strings. RAD/LEX object can contain key "?" with indexOf("*") > -1 to force key equals certificant pub. This rule is used to check against soul+'/'+key using Gun.text.match or String.match.
"authority": Key pair or priv of the certificate authority.
"cb": A callback function after all things are done.
"opt": If opt.expiry (a timestamp) is set, SEA won't sync data after opt.expiry. If opt.block is set, SEA will look for block before syncing.
*/
console.log('SEA.certify() is an early experimental community supported method that may change API behavior without warning in any future version.')
certificants = (() => {
var data = []
if (certificants) {
if ((typeof certificants === 'string' || Array.isArray(certificants)) && certificants.indexOf('*') > -1) return '*'
if (typeof certificants === 'string') return certificants
if (Array.isArray(certificants)) {
if (certificants.length === 1 && certificants[0]) return typeof certificants[0] === 'object' && certificants[0].pub ? certificants[0].pub : typeof certificants[0] === 'string' ? certificants[0] : null
certificants.map(certificant => {
if (typeof certificant ==='string') data.push(certificant)
else if (typeof certificant === 'object' && certificant.pub) data.push(certificant.pub)
})
}
if (typeof certificants === 'object' && certificants.pub) return certificants.pub
return data.length > 0 ? data : null
}
return
})()
if (!certificants) return console.log("No certificant found.")
const expiry = opt.expiry && (typeof opt.expiry === 'number' || typeof opt.expiry === 'string') ? parseFloat(opt.expiry) : null
const readPolicy = (policy || {}).read ? policy.read : null
const writePolicy = (policy || {}).write ? policy.write : typeof policy === 'string' || Array.isArray(policy) || policy["+"] || policy["#"] || policy["."] || policy["="] || policy["*"] || policy[">"] || policy["<"] ? policy : null
// The "blacklist" feature is now renamed to "block". Why ? BECAUSE BLACK LIVES MATTER!
// We can now use 3 keys: block, blacklist, ban
const block = (opt || {}).block || (opt || {}).blacklist || (opt || {}).ban || {}
const readBlock = block.read && (typeof block.read === 'string' || (block.read || {})['#']) ? block.read : null
const writeBlock = typeof block === 'string' ? block : block.write && (typeof block.write === 'string' || block.write['#']) ? block.write : null
if (!readPolicy && !writePolicy) return console.log("No policy found.")
// reserved keys: c, e, r, w, rb, wb
const data = JSON.stringify({
c: certificants,
...(expiry ? {e: expiry} : {}), // inject expiry if possible
...(readPolicy ? {r: readPolicy } : {}), // "r" stands for read, which means read permission.
...(writePolicy ? {w: writePolicy} : {}), // "w" stands for write, which means write permission.
...(readBlock ? {rb: readBlock} : {}), // inject READ block if possible
...(writeBlock ? {wb: writeBlock} : {}), // inject WRITE block if possible
})
const certificate = await SEA.sign(data, authority, null, {raw:1})
var r = certificate
if(!opt.raw){ r = 'SEA'+JSON.stringify(r) }
if(cb){ try{ cb(r) }catch(e){console.log(e)} }
return r;
} catch(e) {
SEA.err = e;
if(SEA.throw){ throw e }
if(cb){ cb() }
return;
}});
module.exports = SEA.certify;
})(USE, './certify');
;USE(function(module){
var shim = USE('./shim');
// Practical examples about usage found in tests.
var SEA = USE('./root');
SEA.work = USE('./work');
SEA.sign = USE('./sign');
SEA.verify = USE('./verify');
SEA.encrypt = USE('./encrypt');
SEA.decrypt = USE('./decrypt');
SEA.certify = USE('./certify');
//SEA.opt.aeskey = USE('./aeskey'); // not official! // this causes problems in latest WebCrypto.
SEA.random = SEA.random || shim.random;
// This is Buffer used in SEA and usable from Gun/SEA application also.
// For documentation see https://nodejs.org/api/buffer.html
SEA.Buffer = SEA.Buffer || USE('./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 = SEA.keyid || (async (pub) => {
try {
// base64('base64(x):base64(y)') => shim.Buffer(xy)
const pb = shim.Buffer.concat(
pub.replace(/-/g, '+').replace(/_/g, '/').split('.')
.map((t) => shim.Buffer.from(t, 'base64'))
)
// id is PGPv4 compliant raw key
const id = shim.Buffer.concat([
shim.Buffer.from([0x99, pb.length / 0x100, pb.length % 0x100]), pb
])
const sha1 = await sha1hash(id)
const hash = shim.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.
((SEA.window||{}).GUN||{}).SEA = SEA;
module.exports = SEA
// -------------- END SEA MODULES --------------------
// -- BEGIN SEA+GUN MODULES: BUNDLED BY DEFAULT UNTIL OTHERS USE SEA ON OWN -------
})(USE, './sea');
;USE(function(module){
var SEA = USE('./sea'), Gun, u;
if(SEA.window){
Gun = SEA.window.GUN || {chain:{}};
} else {
Gun = USE((u+'' == typeof MODULE?'.':'')+'./gun', 1);
}
SEA.GUN = Gun;
function User(root){
this._ = {$: this};
}
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), user;
if(pub){
pub = SEA.opt.pub((pub._||'')['#']) || pub;
return root.get('~'+pub);
}
if(user = root.back('user')){ return user }
var root = (root._), at = root, uuid = at.opt.uuid || lex;
(at = (user = at.user = gun.chain(new User))._).opt = {};
at.opt.uuid = function(cb){
var id = uuid(), pub = root.user;
if(!pub || !(pub = pub.is) || !(pub = pub.pub)){ return id }
id = '~' + pub + '/' + id;
if(cb && cb.call){ cb(null, id) }
return id;
}
return user;
}
function lex(){ return Gun.state().toString(36).replace('.','') }
Gun.User = User;
User.GUN = Gun;
User.SEA = Gun.SEA = SEA;
module.exports = User;
})(USE, './user');
;USE(function(module){
var u, Gun = (''+u != typeof GUN)? (GUN||{chain:{}}) : USE((''+u === typeof MODULE?'.':'')+'./gun', 1);
Gun.chain.then = function(cb, opt){
var gun = this, p = (new Promise(function(res, rej){
gun.once(res, opt);
}));
return cb? p.then(cb) : p;
}
})(USE, './then');
;USE(function(module){
var User = USE('./user'), SEA = User.SEA, Gun = User.GUN, noop = function(){};
// Well first we have to actually create a user. That is what this function does.
User.prototype.create = function(...args){
var pair = typeof args[0] === 'object' && (args[0].pub || args[0].epub) ? args[0] : typeof args[1] === 'object' && (args[1].pub || args[1].epub) ? args[1] : null;
var alias = pair && (pair.pub || pair.epub) ? pair.pub : typeof args[0] === 'string' ? args[0] : null;
var pass = pair && (pair.pub || pair.epub) ? pair : alias && typeof args[1] === 'string' ? args[1] : null;
var cb = args.filter(arg => typeof arg === 'function')[0] || null; // cb now can stand anywhere, after alias/pass or pair
var opt = args && args.length > 1 && typeof args[args.length-1] === 'object' ? args[args.length-1] : {}; // opt is always the last parameter which typeof === 'object' and stands after cb
var gun = this, cat = (gun._), root = gun.back(-1);
cb = cb || noop;
opt = opt || {};
if(false !== opt.check){
var err;
if(!alias){ err = "No user." }
if((pass||'').length < 8){ err = "Password too short!" }
if(err){
cb({err: Gun.log(err)});
return gun;
}
}
if(cat.ing){
(cb || noop)({err: Gun.log("User is already being created or authenticated!"), wait: true});
return gun;
}
cat.ing = true;
var act = {}, u;
act.a = function(pubs){
act.pubs = pubs;
if(pubs && !opt.already){
// If we can enforce that a user name is already taken, it might be nice to try, but this is not guaranteed.
var ack = {err: Gun.log('User already created!')};
cat.ing = false;
(cb || noop)(ack);
gun.leave();
return;
}
act.salt = String.random(64); // pseudo-randomly create a salt, then use PBKDF2 function to extend the password with it.
SEA.work(pass, act.salt, act.b); // this will take some short amount of time to produce a proof, which slows brute force attacks.
}
act.b = function(proof){
act.proof = proof;
pair ? act.c(pair) : SEA.pair(act.c) // generate a brand new key pair or use the existing.
}
act.c = function(pair){
var tmp
act.pair = pair || {};
if(tmp = cat.root.user){
tmp._.sea = pair;
tmp.is = {pub: pair.pub, epub: pair.epub, alias: alias};
}
// the user's public key doesn't need to be signed. But everything else needs to be signed with it! // we have now automated it! clean up these extra steps now!
act.data = {pub: pair.pub};
act.d();
}
act.d = function(){
act.data.alias = alias;
act.e();
}
act.e = function(){
act.data.epub = act.pair.epub;
SEA.encrypt({priv: act.pair.priv, epriv: act.pair.epriv}, act.proof, act.f, {raw:1}); // to keep the private key safe, we AES encrypt it with the proof of work!
}
act.f = function(auth){
act.data.auth = JSON.stringify({ek: auth, s: act.salt});
act.g(act.data.auth);
}
act.g = function(auth){ var tmp;
act.data.auth = act.data.auth || auth;
root.get(tmp = '~'+act.pair.pub).put(act.data).on(act.h); // awesome, now we can actually save the user with their public key as their ID.
var link = {}; link[tmp] = {'#': tmp}; root.get('~@'+alias).put(link).get(tmp).on(act.i); // next up, we want to associate the alias with the public key. So we add it to the alias list.
}
act.h = function(data, key, msg, eve){
eve.off(); act.h.ok = 1; act.i();
}
act.i = function(data, key, msg, eve){
if(eve){ act.i.ok = 1; eve.off() }
if(!act.h.ok || !act.i.ok){ return }
cat.ing = false;
cb({ok: 0, pub: act.pair.pub}); // callback that the user has been created. (Note: ok = 0 because we didn't wait for disk to ack)
if(noop === cb){ pair ? gun.auth(pair) : gun.auth(alias, pass) } // if no callback is passed, auto-login after signing up.
}
root.get('~@'+alias).once(act.a);
return gun;
}
User.prototype.leave = function(opt, cb){
var gun = this, user = (gun.back(-1)._).user;
if(user){
delete user.is;
delete user._.is;
delete user._.sea;
}
if(SEA.window){
try{var sS = {};
sS = SEA.window.sessionStorage;
delete sS.recall;
delete sS.pair;
}catch(e){};
}
return gun;
}
})(USE, './create');
;USE(function(module){
var User = USE('./user'), SEA = User.SEA, Gun = User.GUN, noop = function(){};
// now that we have created a user, we want to authenticate them!
User.prototype.auth = function(...args){ // TODO: this PR with arguments need to be cleaned up / refactored.
var pair = typeof args[0] === 'object' && (args[0].pub || args[0].epub) ? args[0] : typeof args[1] === 'object' && (args[1].pub || args[1].epub) ? args[1] : null;
var alias = !pair && typeof args[0] === 'string' ? args[0] : null;
var pass = (alias || (pair && !(pair.priv && pair.epriv))) && typeof args[1] === 'string' ? args[1] : null;
var cb = args.filter(arg => typeof arg === 'function')[0] || null; // cb now can stand anywhere, after alias/pass or pair
var opt = args && args.length > 1 && typeof args[args.length-1] === 'object' ? args[args.length-1] : {}; // opt is always the last parameter which typeof === 'object' and stands after cb
var gun = this, cat = (gun._), root = gun.back(-1);
if(cat.ing){
(cb || noop)({err: Gun.log("User is already being created or authenticated!"), wait: true});
return gun;
}
cat.ing = true;
var act = {}, u, tries = 9;
act.a = function(data){
if(!data){ return act.b() }
if(!data.pub){
var tmp = []; Object.keys(data).forEach(function(k){ if('_'==k){ return } tmp.push(data[k]) })
return act.b(tmp);
}
if(act.name){ return act.f(data) }
act.c((act.data = data).auth);
}
act.b = function(list){
var get = (act.list = (act.list||[]).concat(list||[])).shift();
if(u === get){
if(act.name){ return act.err('Your user account is not published for dApps to access, please consider syncing it online, or allowing local access by adding your device as a peer.') }
if(alias && tries--){
root.get('~@'+alias).once(act.a);
return;
}
return act.err('Wrong user or password.')
}
root.get(get).once(act.a);
}
act.c = function(auth){
if(u === auth){ return act.b() }
if('string' == typeof auth){ return act.c(obj_ify(auth)) } // in case of legacy
SEA.work(pass, (act.auth = auth).s, act.d, act.enc); // the proof of work is evidence that we've spent some time/effort trying to log in, this slows brute force.
}
act.d = function(proof){
SEA.decrypt(act.auth.ek, proof, act.e, act.enc);
}
act.e = function(half){
if(u === half){
if(!act.enc){ // try old format
act.enc = {encode: 'utf8'};
return act.c(act.auth);
} act.enc = null; // end backwards
return act.b();
}
act.half = half;
act.f(act.data);
}
act.f = function(pair){
var half = act.half || {}, data = act.data || {};
act.g(act.lol = {pub: pair.pub || data.pub, epub: pair.epub || data.epub, priv: pair.priv || half.priv, epriv: pair.epriv || half.epriv});
}
act.g = function(pair){
if(!pair || !pair.pub || !pair.epub){ return act.b() }
act.pair = pair;
var user = (root._).user, at = (user._);
var tmp = at.tag;
var upt = at.opt;
at = user._ = root.get('~'+pair.pub)._;
at.opt = upt;
// add our credentials in-memory only to our root user instance
user.is = {pub: pair.pub, epub: pair.epub, alias: alias || pair.pub};
at.sea = act.pair;
cat.ing = false;
try{if(pass && u == (obj_ify(cat.root.graph['~'+pair.pub].auth)||'')[':']){ opt.shuffle = opt.change = pass; } }catch(e){} // migrate UTF8 & Shuffle!
opt.change? act.z() : (cb || noop)(at);
if(SEA.window && ((gun.back('user')._).opt||opt).remember){
// TODO: this needs to be modular.
try{var sS = {};
sS = SEA.window.sessionStorage; // TODO: FIX BUG putting on `.is`!
sS.recall = true;
sS.pair = JSON.stringify(pair); // auth using pair is more reliable than alias/pass
}catch(e){}
}
try{
if(root._.tag.auth){ // auth handle might not be registered yet
(root._).on('auth', at) // TODO: Deprecate this, emit on user instead! Update docs when you do.
} else { setTimeout(function(){ (root._).on('auth', at) },1) } // if not, hackily add a timeout.
//at.on('auth', at) // Arrgh, this doesn't work without event "merge" code, but "merge" code causes stack overflow and crashes after logging in & trying to write data.
}catch(e){
Gun.log("Your 'auth' callback crashed with:", e);
}
}
act.h = function(data){
if(!data){ return act.b() }
alias = data.alias
if(!alias)
alias = data.alias = "~" + pair.pub
if(!data.auth){
return act.g(pair);
}
pair = null;
act.c((act.data = data).auth);
}
act.z = function(){
// password update so encrypt private key using new pwd + salt
act.salt = String.random(64); // pseudo-random
SEA.work(opt.change, act.salt, act.y);
}
act.y = function(proof){
SEA.encrypt({priv: act.pair.priv, epriv: act.pair.epriv}, proof, act.x, {raw:1});
}
act.x = function(auth){
act.w(JSON.stringify({ek: auth, s: act.salt}));
}
act.w = function(auth){
if(opt.shuffle){ // delete in future!
console.log('migrate core account from UTF8 & shuffle');
var tmp = {}; Object.keys(act.data).forEach(function(k){ tmp[k] = act.data[k] });
delete tmp._;
tmp.auth = auth;
root.get('~'+act.pair.pub).put(tmp);
} // end delete
root.get('~'+act.pair.pub).get('auth').put(auth, cb || noop);
}
act.err = function(e){
var ack = {err: Gun.log(e || 'User cannot be found!')};
cat.ing = false;
(cb || noop)(ack);
}
act.plugin = function(name){
if(!(act.name = name)){ return act.err() }
var tmp = [name];
if('~' !== name[0]){
tmp[1] = '~'+name;
tmp[2] = '~@'+name;
}
act.b(tmp);
}
if(pair){
if(pair.priv && pair.epriv)
act.g(pair);
else
root.get('~'+pair.pub).once(act.h);
} else
if(alias){
root.get('~@'+alias).once(act.a);
} else
if(!alias && !pass){
SEA.name(act.plugin);
}
return gun;
}
function obj_ify(o){
if('string' != typeof o){ return o }
try{o = JSON.parse(o);
}catch(e){o={}};
return o;
}
})(USE, './auth');
;USE(function(module){
var User = USE('./user'), SEA = User.SEA, Gun = User.GUN;
User.prototype.recall = function(opt, cb){
var gun = this, root = gun.back(-1), tmp;
opt = opt || {};
if(opt && opt.sessionStorage){
if(SEA.window){
try{
var sS = {};
sS = SEA.window.sessionStorage; // TODO: FIX BUG putting on `.is`!
if(sS){
(root._).opt.remember = true;
((gun.back('user')._).opt||opt).remember = true;
if(sS.recall || sS.pair) root.user().auth(JSON.parse(sS.pair), cb); // pair is more reliable than alias/pass
}
}catch(e){}
}
return gun;
}
/*
TODO: copy mhelander's expiry code back in.
Although, we should check with community,
should expiry be core or a plugin?
*/
return gun;
}
})(USE, './recall');
;USE(function(module){
var User = USE('./user'), SEA = User.SEA, Gun = User.GUN, noop = function(){};
User.prototype.pair = function(){
var user = this, proxy; // undeprecated, hiding with proxies.
try{ proxy = new Proxy({DANGER:'\u2620'}, {get: function(t,p,r){
if(!user.is || !(user._||'').sea){ return }
return user._.sea[p];
}})}catch(e){}
return proxy;
}
// If authenticated user wants to delete his/her account, let's support it!
User.prototype.delete = async function(alias, pass, cb){
console.log("user.delete() IS DEPRECATED AND WILL BE MOVED TO A MODULE!!!");
var gun = this, root = gun.back(-1), user = gun.back('user');
try {
user.auth(alias, pass, function(ack){
var pub = (user.is||{}).pub;
// Delete user data
user.map().once(function(){ this.put(null) });
// Wipe user data from memory
user.leave();
(cb || noop)({ok: 0});
});
} catch (e) {
Gun.log('User.delete failed! Error:', e);
}
return gun;
}
User.prototype.alive = async function(){
console.log("user.alive() IS DEPRECATED!!!");
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){
console.log("`.trust` API MAY BE DELETED OR CHANGED OR RENAMED, DO NOT USE!");
// 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.get('trust').get(path).put(theirPubkey);
// do a lookup on this gun chain directly (that gets bob's copy of the data)
// do a lookup on the metadata trust table for this path (that gets all the pubkeys allowed to write on this path)
// do a lookup on each of those pubKeys ON the path (to get the collab data "layers")
// THEN you perform Jachen's mix operation
// and return the result of that to...
}
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._.sea, path = '';
gun.back(function(at){ if(at.is){ return } path += (at.get||'') });
(async function(){
var enc, sec = await user.get('grant').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('grant').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('grant').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.is){ 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;
}
/**
* returns the decrypted value, encrypted by secret
* @returns {Promise<any>}
// Mark needs to review 1st before officially supported
User.prototype.decrypt = function(cb) {
let gun = this,
path = ''
gun.back(function(at) {
if (at.is) {
return
}
path += at.get || ''
})
return gun
.then(async data => {
if (data == null) {
return
}
const user = gun.back(-1).user()
const pair = user.pair()
let sec = await user
.get('trust')
.get(pair.pub)
.get(path)
sec = await SEA.decrypt(sec, pair)
if (!sec) {
return data
}
let decrypted = await SEA.decrypt(data, sec)
return decrypted
})
.then(res => {
cb && cb(res)
return res
})
}
*/
module.exports = User
})(USE, './share');
;USE(function(module){
var SEA = USE('./sea'), S = USE('./settings'), noop = function() {}, u;
var Gun = (SEA.window||'').GUN || USE((''+u === typeof MODULE?'.':'')+'./gun', 1);
// 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: {}};
at.on('put', check, at); // SEA now runs its firewall on HAM diffs, not all i/o.
}
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.
// correction: 2020 it gets run on each key/value pair in a node upon a HAM diff.
// 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: ~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 check(msg){ // REVISE / IMPROVE, NO NEED TO PASS MSG/EVE EACH SUB?
var eve = this, at = eve.as, put = msg.put, soul = put['#'], key = put['.'], val = put[':'], state = put['>'], id = msg['#'], tmp;
if(!soul || !key){ return }
if((msg._||'').faith && (at.opt||'').faith && 'function' == typeof msg._){
SEA.opt.pack(put, function(raw){
SEA.verify(raw, false, function(data){ // this is synchronous if false
put['='] = SEA.opt.unpack(data);
eve.to.next(msg);
})})
return
}
var no = function(why){ at.on('in', {'@': id, err: msg.err = why}) }; // exploit internal relay stun for now, maybe violates spec, but testing for now. // Note: this may be only the sharded message, not original batch.
//var no = function(why){ msg.ack(why) };
(msg._||'').DBG && ((msg._||'').DBG.c = +new Date);
if(0 <= soul.indexOf('<?')){ // special case for "do not sync data X old" forget
// 'a~pub.key/b<?9'
tmp = parseFloat(soul.split('<?')[1]||'');
if(tmp && (state < (Gun.state() - (tmp * 1000)))){ // sec to ms
(tmp = msg._) && (tmp.stun) && (tmp.stun--); // THIS IS BAD CODE! It assumes GUN internals do something that will probably change in future, but hacking in now.
return; // omit!
}
}
if('~@' === soul){ // special case for shared system data, the list of aliases.
check.alias(eve, msg, val, key, soul, at, no); return;
}
if('~@' === soul.slice(0,2)){ // special case for shared system data, the list of public keys for an alias.
check.pubs(eve, msg, val, key, soul, at, no); return;
}
//if('~' === soul.slice(0,1) && 2 === (tmp = soul.slice(1)).split('.').length){ // special case, account data for a public key.
if(tmp = SEA.opt.pub(soul)){ // special case, account data for a public key.
check.pub(eve, msg, val, key, soul, at, no, at.user||'', tmp); return;
}
if(0 <= soul.indexOf('#')){ // special case for content addressing immutable hashed data.
check.hash(eve, msg, val, key, soul, at, no); return;
}
check.any(eve, msg, val, key, soul, at, no, at.user||''); return;
eve.to.next(msg); // not handled
}
check.hash = function(eve, msg, val, key, soul, at, no){ // mark unbuilt @i001962 's epic hex contrib!
SEA.work(val, null, function(data){
function hexToBase64(hexStr) {
let base64 = "";
for(let i = 0; i < hexStr.length; i++) {
base64 += !(i - 1 & 1) ? String.fromCharCode(parseInt(hexStr.substring(i - 1, i + 1), 16)) : ""}
return btoa(base64);}
if(data && data === key.split('#').slice(-1)[0]){ return eve.to.next(msg) }
else if (data && data === hexToBase64(key.split('#').slice(-1)[0])){
return eve.to.next(msg) }
no("Data hash not same as hash!");
}, {name: 'SHA-256'});
}
check.alias = function(eve, msg, val, key, soul, at, no){ // Example: {_:#~@, ~@alice: {#~@alice}}
if(!val){ return no("Data must exist!") } // data MUST exist
if('~@'+key === link_is(val)){ return eve.to.next(msg) } // in fact, it must be EXACTLY equal to itself
no("Alias not same!"); // if it isn't, reject.
};
check.pubs = function(eve, msg, val, key, soul, at, no){ // Example: {_:#~@alice, ~asdf: {#~asdf}}
if(!val){ return no("Alias must exist!") } // data MUST exist
if(key === link_is(val)){ return eve.to.next(msg) } // and the ID must be EXACTLY equal to its property
no("Alias not same!"); // that way nobody can tamper with the list of public keys.
};
check.pub = async function(eve, msg, val, key, soul, at, no, user, pub){ var tmp // Example: {_:#~asdf, hello:'world'~fdsa}}
const raw = await S.parse(val) || {}
const verify = (certificate, certificant, cb) => {
if (certificate.m && certificate.s && certificant && pub)
// now verify certificate
return SEA.verify(certificate, pub, data => { // check if "pub" (of the graph owner) really issued this cert
if (u !== data && u !== data.e && msg.put['>'] && msg.put['>'] > parseFloat(data.e)) return no("Certificate expired.") // certificate expired
// "data.c" = a list of certificants/certified users
// "data.w" = lex WRITE permission, in the future, there will be "data.r" which means lex READ permission
if (u !== data && data.c && data.w && (data.c === certificant || data.c.indexOf('*' || certificant) > -1)) {
// ok, now "certificant" is in the "certificants" list, but is "path" allowed? Check path
let path = soul.indexOf('/') > -1 ? soul.replace(soul.substring(0, soul.indexOf('/') + 1), '') : ''
String.match = String.match || Gun.text.match
const w = Array.isArray(data.w) ? data.w : typeof data.w === 'object' || typeof data.w === 'string' ? [data.w] : []
for (const lex of w) {
if ((String.match(path, lex['#']) && String.match(key, lex['.'])) || (!lex['.'] && String.match(path, lex['#'])) || (!lex['#'] && String.match(key, lex['.'])) || String.match((path ? path + '/' + key : key), lex['#'] || lex)) {
// is Certificant forced to present in Path
if (lex['+'] && lex['+'].indexOf('*') > -1 && path && path.indexOf(certificant) == -1 && key.indexOf(certificant) == -1) return no(`Path "${path}" or key "${key}" must contain string "${certificant}".`)
// path is allowed, but is there any WRITE block? Check it out
if (data.wb && (typeof data.wb === 'string' || ((data.wb || {})['#']))) { // "data.wb" = path to the WRITE block
var root = eve.as.root.$.back(-1)
if (typeof data.wb === 'string' && '~' !== data.wb.slice(0, 1)) root = root.get('~' + pub)
return root.get(data.wb).get(certificant).once(value => { // TODO: INTENT TO DEPRECATE.
if (value && (value === 1 || value === true)) return no(`Certificant ${certificant} blocked.`)
return cb(data)
})
}
return cb(data)
}
}
return no("Certificate verification fail.")
}
})
return
}
if ('pub' === key && '~' + pub === soul) {
if (val === pub) return eve.to.next(msg) // the account MUST match `pub` property that equals the ID of the public key.
return no("Account not same!")
}
if ((tmp = user.is) && tmp.pub && !raw['*'] && !raw['+'] && (pub === tmp.pub || (pub !== tmp.pub && ((msg._.msg || {}).opt || {}).cert))){
SEA.opt.pack(msg.put, packed => {
SEA.sign(packed, (user._).sea, async function(data) {
if (u === data) return no(SEA.err || 'Signature fail.')
msg.put[':'] = {':': tmp = SEA.opt.unpack(data.m), '~': data.s}
msg.put['='] = tmp
// if writing to own graph, just allow it
if (pub === user.is.pub) {
if (tmp = link_is(val)) (at.sea.own[tmp] = at.sea.own[tmp] || {})[pub] = 1
JSON.stringifyAsync(msg.put[':'], function(err,s){
if(err){ return no(err || "Stringify error.") }
msg.put[':'] = s;
return eve.to.next(msg);
})
return
}
// if writing to other's graph, check if cert exists then try to inject cert into put, also inject self pub so that everyone can verify the put
if (pub !== user.is.pub && ((msg._.msg || {}).opt || {}).cert) {
const cert = await S.parse(msg._.msg.opt.cert)
// even if cert exists, we must verify it
if (cert && cert.m && cert.s)
verify(cert, user.is.pub, _ => {
msg.put[':']['+'] = cert // '+' is a certificate
msg.put[':']['*'] = user.is.pub // '*' is pub of the user who puts
JSON.stringifyAsync(msg.put[':'], function(err,s){
if(err){ return no(err || "Stringify error.") }
msg.put[':'] = s;
return eve.to.next(msg);
})
return
})
}
}, {raw: 1})
})
return;
}
SEA.opt.pack(msg.put, packed => {
SEA.verify(packed, raw['*'] || pub, function(data){ var tmp;
data = SEA.opt.unpack(data);
if (u === data) return no("Unverified data.") // make sure the signature matches the account it claims to be on. // reject any updates that are signed with a mismatched account.
if ((tmp = link_is(data)) && pub === SEA.opt.pub(tmp)) (at.sea.own[tmp] = at.sea.own[tmp] || {})[pub] = 1
// check if cert ('+') and putter's pub ('*') exist
if (raw['+'] && raw['+']['m'] && raw['+']['s'] && raw['*'])
// now verify certificate
verify(raw['+'], raw['*'], _ => {
msg.put['='] = data;
return eve.to.next(msg);
})
else {
msg.put['='] = data;
return eve.to.next(msg);
}
});
})
return
};
check.any = function(eve, msg, val, key, soul, at, no, user){ var tmp, pub;
if(at.opt.secure){ return no("Soul missing public key at '" + key + "'.") }
// TODO: Ask community if should auto-sign non user-graph data.
at.on('secure', function(msg){ this.off();
if(!at.opt.secure){ return eve.to.next(msg) }
no("Data cannot be changed.");
}).on.on('secure', msg);
return;
}
var valid = Gun.valid, link_is = function(d,l){ return 'string' == typeof (l = valid(d)) && l }, state_ify = (Gun.state||'').ify;
var pubcut = /[^\w_-]/; // anything not alphanumeric or _ -
SEA.opt.pub = function(s){
if(!s){ return }
s = s.split('~');
if(!s || !(s = s[1])){ return }
s = s.split(pubcut).slice(0,2);
if(!s || 2 != s.length){ return }
if('@' === (s[0]||'')[0]){ return }
s = s.slice(0,2).join('.');
return s;
}
SEA.opt.stringy = function(t){
// TODO: encrypt etc. need to check string primitive. Make as breaking change.
}
SEA.opt.pack = function(d,cb,k, n,s){ var tmp, f; // pack for verifying
if(SEA.opt.check(d)){ return cb(d) }
if(d && d['#'] && d['.'] && d['>']){ tmp = d[':']; f = 1 }
JSON.parseAsync(f? tmp : d, function(err, meta){
var sig = ((u !== (meta||'')[':']) && (meta||'')['~']); // or just ~ check?
if(!sig){ cb(d); return }
cb({m: {'#':s||d['#'],'.':k||d['.'],':':(meta||'')[':'],'>':d['>']||Gun.state.is(n, k)}, s: sig});
});
}
var O = SEA.opt;
SEA.opt.unpack = function(d, k, n){ var tmp;
if(u === d){ return }
if(d && (u !== (tmp = d[':']))){ return tmp }
k = k || O.fall_key; if(!n && O.fall_val){ n = {}; n[k] = O.fall_val }
if(!k || !n){ return }
if(d === n[k]){ return d }
if(!SEA.opt.check(n[k])){ return d }
var soul = (n && n._ && n._['#']) || O.fall_soul, s = Gun.state.is(n, k) || O.fall_state;
if(d && 4 === d.length && soul === d[0] && k === d[1] && fl(s) === fl(d[3])){
return d[2];
}
if(s < SEA.opt.shuffle_attack){
return d;
}
}
SEA.opt.shuffle_attack = 1546329600000; // Jan 1, 2019
var fl = Math.floor; // TODO: Still need to fix inconsistent state issue.
// TODO: Potential bug? If pub/priv key starts with `-`? IDK how possible.
})(USE, './index');
}());