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LEX fix #1268

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LEX fix #1268

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393eba7
LEX fix
Aug 2, 2022
c4f6d7d
LEX fix
Aug 2, 2022
de5a3c3
LEX fix
Aug 2, 2022
313b112
Don't use eval() due security exploit
Aug 5, 2022
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77 changes: 77 additions & 0 deletions examples/basic/lex.html
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Original file line number Diff line number Diff line change
@@ -0,0 +1,77 @@
<!DOCTYPE html>

<style>
#app
{
padding: 20px;
border: 1px solid red;
border-radius: 5px;
box-shadow: 0px 0px 5px black;
}
</style>

<h1>LEX</h1>

<div id="app"></div>

<script src="../jquery.js"></script>
<script src="../../../gun/gun.js"></script>
<script src="../../../gun/sea.js"></script>

<script>
var gun = GUN();
var gun2 = GUN();

var date = new Date().toISOString();
var Bob = {pub: 'GJeqY1ehreDAZClgW-PhVtksbGJdQDpv0xJK2pNT9I0.97QmEMb03NNqwnTnybZ9qXfRsFTyllY2SYq4tiCKMQQ', priv: 'NPN5_kzpgFpMPxZ5dGuGoUtTyjvS0P0FErSW_Jntboc', epub: 'MrNEMSY-ivK3wYJPABepgs-XtJNQ38YZdBbU8bfSzys.5yT3CpSRJbtaIpxG7W-FdTqIvPetdXBrWLUBAYQUsWc', epriv: 'kYBlQ3NFlk-dNFMsZ_q4u24E91X-91tlVcYqiX8Zz-4'};
var Alice = {pub: '71ovADGEThMmJulYtzPR4kXvZBqvIO2MU3-55dPxeyw.sm_mNTSiFOyDVHXLH-BbMqREnyLIrm7ZuVyfITweG8M', priv: 'wEmX7hysN3hImd5taexKaRA246roFvRplrJeTKp8OXo', epub: 'Xa42tyohvvp6ynH1wm_6gOjNA7X76dTH7icS5QSCHlc.lDhFr7YTzIhCCJm-B5FFXNYdbsY_AF84EiXBC_6Sk4I', epriv: '0WeVu6Eck5QpkipVgkb_IYTICdIA_lSSmaIe64YmMas'};

gun.user().auth(Bob);

(async () => {
// Creates a new url record to be added to the list
var url = { url: 'https://gun.eco' }

// Stringifies the object and uses SEA.work to generate a base64 hash for it
var text = JSON.stringify(url);
var operator = '<';
var matchDate = date;
// var matchDate = '2022-08-02T21:15:10.382Z';

var certificate = await SEA.certify(Bob.pub, { '*':'list' }, Alice);

gun
.user(Alice.pub)
.get('list')
.get(date)
.put(text, ack => {
if (ack.err) {
document.querySelector('#app').innerHTML += '<br/><br/>';
document.querySelector('#app').innerHTML += ` ${ack.err} `;
}
}, {opt: {cert: certificate}});

document.querySelector('#app').innerHTML += date;
document.querySelector('#app').innerHTML += ` ${operator} `;
document.querySelector('#app').innerHTML += matchDate;

const match = {
// lexical queries are kind of like a limited RegEx or Glob.
'.': {
// property selector
[operator]: matchDate, // find any indexed property larger ~3 hours ago
},
};

gun
.user(Alice.pub)
.get('list')
.get(match)
.map()
.once((d,k)=> {
document.querySelector('#app').innerHTML += '<br/><br/>';
document.querySelector('#app').innerHTML += `${k} - ${d}`;
})
})();

</script>
34 changes: 16 additions & 18 deletions gun.js
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Original file line number Diff line number Diff line change
Expand Up @@ -22,22 +22,16 @@
while(l-- > 0){ s += c.charAt(Math.floor(Math.random() * c.length)) }
return s;
}
String.match = function(t, o){ var tmp, u;
if('string' !== typeof t){ return false }
if('string' == typeof o){ o = {'=': o} }
String.match = function(t, o){
if(typeof o === 'string'){ o = {'=': o} }
o = o || {};
tmp = (o['='] || o['*'] || o['>'] || o['<']);
if(t === tmp){ return true }
if(u !== o['=']){ return false }
tmp = (o['*'] || o['>']);
if(t.slice(0, (tmp||'').length) === tmp){ return true }
if(u !== o['*']){ return false }
if(u !== o['>'] && u !== o['<']){
return (t >= o['>'] && t <= o['<'])? true : false;
}
if(u !== o['>'] && t >= o['>']){ return true }
if(u !== o['<'] && t <= o['<']){ return true }
return false;
return (typeof t === 'string' && Object.keys(o).every((e) => {
if (e === '*') { return t.slice(0, (o[e]||'').length) === o[e] }
else if (e === '=') { return t === o[e] }
else if (e === '>') { return t > o[e] }
else if (e === '<') { return t < o[e] }
else return true
}))
}
String.hash = function(s, c){ // via SO
if(typeof s !== 'string'){ return }
Expand Down Expand Up @@ -1293,7 +1287,7 @@
if(tmp = ((tmp = lex['#'])||'')['='] || tmp){ return gun.get(tmp) }
(tmp = gun.chain()._).lex = lex; // LEX!
gun.on('in', function(eve){
if(String.match(eve.get|| (eve.put||'')['.'], lex['.'] || lex['#'] || lex)){
if(eve.get || String.match((eve.put||'')['.'], lex['.'] || lex['#'] || lex)){
tmp.on('in', eve);
}
this.to.next(eve);
Expand Down Expand Up @@ -1323,9 +1317,13 @@
return chain;
}
function map(msg){ this.to.next(msg);
var cat = this.as, gun = msg.$, at = gun._, put = msg.put, tmp;
var cat = this.as, gun = msg.$, at = gun._, put = msg.put, tmp, n;
if(!at.soul && !msg.$$){ return } // this line took hundreds of tries to figure out. It only works if core checks to filter out above chains during link tho. This says "only bother to map on a node" for this layer of the chain. If something is not a node, map should not work.
if((tmp = cat.lex) && !String.match(msg.get|| (put||'')['.'], tmp['.'] || tmp['#'] || tmp)){ return }

if (tmp = cat.lex) {
n = (typeof at.back.get === 'undefined' || at.back.get.charAt(0) === '~') ? (put||'')['.'] : msg.get; // Check if user or public graph
if(!String.match(n, tmp['.'] || tmp['#'] || tmp)){ return }
}
Gun.on.link(msg, cat);
}
var noop = function(){}, event = {stun: noop, off: noop}, u;
Expand Down
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