Is there a way to read environment variable address in Node.js?
For example :
var env_addr = env_memory_address(process.env.PATH);
console.log(env_addr); // output: 0xbf832ff
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What problem are you actually trying to solve by getting a memory address of an environment variable? I'm guessing there are much better ways to solve your actual problem that might even be feasible from Javascript, but we'd need to know the real problem in order to offer ideas. Please try not to post xy problems where you post a question about your imagined solution rather than posting about the actual problem. You get a lot less useful info from us when you hide the actual problem.jfriend00– jfriend002018-02-22 22:19:31 +00:00Commented Feb 22, 2018 at 22:19
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Actually there is not have a problem. Just wondering how far Node.js can go.0DAYanc– 0DAYanc2018-02-23 02:40:50 +00:00Commented Feb 23, 2018 at 2:40
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So then, did my answer below answer your question?jfriend00– jfriend002018-02-23 03:18:20 +00:00Commented Feb 23, 2018 at 3:18
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No. But thanks again for your answer.0DAYanc– 0DAYanc2018-02-23 03:45:50 +00:00Commented Feb 23, 2018 at 3:45
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For an answer like how to do it :P0DAYanc– 0DAYanc2018-02-23 03:50:34 +00:00Commented Feb 23, 2018 at 3:50
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1 Answer
Is there a way to read environment variable address in Node.js?
No, not from plain Javascript. Javascript itself does not surface memory addresses in any way either in the browser or in the node.js execution environment.
You could probably write a node.js add-on in C++ and could then get a memory address, but even if you surfaced it back to Javascript in some Javascript data type, you couldn't do anything with it directly in Javascript (other than pass it to other C++ add-on code) and you'd probably have to put a string-ized version of the address in a Javascript string variable because there is no other Javascript data type that's a good match for a 64-bit memory address. Or, you could make your own "handle" that had the address in it and was surfaced back to Javascript as an object. But, either way you couldn't do anything with the memory address in Javascript.
