Can't get function name in invokeFun/invokeFunPre

[freetom]

I'm trying to write an analysis that will run on node js apps. I have to filter for certain function invocations.

So I started by printing functions names using API invokeFunPre and accessing f.name that should contain the name of the function documentation

When I run with node jalangi2-master/src/js/commands/jalangi.js --inlineIID --inlineSource --analysis sample_anal.js node_app/sample1.js node_app/input I get as output some function names correctly but not all of them. For example require('child_process').exec is not logged instead an empty string is written on the output as his name.

Update: I discovered that even typing require('child_process').exec.name on node console return '' so at this point I guess it's not a jalangi issue, it's a javascript issue mozilla fun name

How could I distinguish functions during the invokeFunPre/invokeFun callbacks? any idea?

Reproduce:
rep.zip

[esbena]

Are the functions of interest user-defined or predefined by the native environment? You need different solutions for the two cases.

For user-defined functions, I record their identity during #declare when they are first allocated.

For predefined functions, I know their names up front and record their identity when my analysis is initialized:

var forbiddenFunctions = [];
forbiddenFunctions.push(require('child_process').exec));

...

this.declare = function (iid, name, val, ...){
    if(typeof val === 'function' && shouldBeForbidden(???)){
        forbiddenFunctions.push(val);
    }
}

[freetom]

thanks, solved!

var functions = {};
functions[require('child_process').exec]='exec';
this.invokeFun = function(iid, f, base, args, isConstructor, isMethod){
    if(functions[f]!=null)
        console.log(functions[f])
    };
}