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Home Page: https://shellyln.github.io/liyad/
License: Other
Liyad (Lisp yet another DSL interpreter) is very small Lisp interpreter written in JavaScript.
Home Page: https://shellyln.github.io/liyad/
License: Other
Hi! This looks like a really awesome library, and I'm hoping I can try it out. I was especially interested by the claim in the readme:
Secure execution for untrusted contents
No host environment's symbols are accessible from evaluated user contents by default.
Malicious codes can not make a serious attack
However, using the example from https://github.com/shellyln/liyad#build-your-new-dsl , and even after removing all presets other than defaultConfig
and installCore()
, I can still access a lot:
const { SExpression,
defaultConfig,
installCore,
} = require('liyad')
let config = Object.assign({}, defaultConfig)
config = installCore(config)
let parse = SExpression(config)
let obj = {}
let fn1 = parse(`( -> (match)
(::match:constructor:prototype:foo= 1)
)`)
fn1({})
console.log(obj.foo) //1
let fn2 = parse(`( -> (match)
(::match:constructor@assign ::match:constructor:prototype (# ("bar" 2)) )
)`)
fn2({})
console.log(obj.bar) //2
Is there another way you would recommend using this to accept user-defined functions/predicates to apply to some data? Perhaps overriding the $get/$call functions to only access/call object properties that are "ownProperties" of the object in question?
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