Original post: hachyderm.io (Mastodon)
And you all complained when in C we used 1 and 0...
this post was submitted on 21 Mar 2025
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We use 0 and not 0...
Akcshually we use 0 and "not equal 0", since "not 0" would be 0xFF..FF, and (at least gcc) gives back a 1 for a true expression. No idea about the spec, probably undefined...
Damn you for correcting me correctly! :D
var true = false;
var false = true;
So we need to be careful with upper- and lowercase. Meanwhile the docs: > settiings
Yes, the settiings are different than the settings. You also need to be careful with those.
had to use a different spelliings at backend and frontend, otherwise it wouldn't work.
They specifically said "this is not a typo"!!!
Is the backend Python and the frontend JavaScript? Because then that would happen and just be normal, because Boolean true is True in python.
Probably, but if you're interpreting user inputs as raw code, you've got much much worse problems going on, lol.
[...]®ister=import os; os.system("sudo rm -rf /"); return True
Hey, that's my username too. Or it was going to be, while the site was still up.
What a coincidence!
I guess I'll wait for the site to come back, and see if it's still available...
It's the settiings file... It's probably supposed to only be written by the system admin.
A good place to put persistent malware. That's why when using docker images always mount as ro if at all possible.
It’s you can modify the settings file you sure as hell can put the malware anywhere you want
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Can't they just convert a "true" input to backend to uppercase
Yep they should use a config file format like JSON or TOML or YAML or what have you, and then decode that into python objects. Using an actual programming language for config is dumb as hell IMO. (inb4 pissed off suckless fans)
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The backend and frontend on the product I work on are like this.
As long as you remember that booleans are not strings and should always be parsed if they are, this won't be a problem.
I am yet to see a boolean.parse() implementation in the wild that is case sensitive.
The could be using .js and .py files directly as config files and letting the language interpreter so the heavy lifting. Just like ye olde config.php.
And yes this absolutely will allow code injection by a config admin.
Implying Hell is frontend.... yeah, actually, that tracks.
Baseball, huh?
Glorious. I remember some hilarious nonsense in an API where the devs I worked with hadn't known they could just use boolean in JSON and had badly implemented it through strings, but this... This is amazing!
At my last job we had a lot of old code, and our supposedly smartest framework people couldn't be bothered learning front end properly. So there was a mix of methods for passing values to the front end, but nobody seemed to think of just passing JSON and parsing it into a single source of truth. There was so much digging for data in hidden columns of nested HTML tables, and you never knew if booleans would be "true", "TRUE", "1", or "Y" strings.
Never mind having to unformat currency strings to check the value then format them back to strings after updating values.
I fixed this stuff when I could, but it was half baked into the custom framework.
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The cherry on top is that they didn't even spell settings correctly.
settiings is spelled differently on the backend
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I’ve always hated case sensitivity. I know that at an ASCII level “variable” != “Variable” but is there really a reason to have a distinction between them?
You are thinking it's easy because you only think of e == E, but I'll let you look up collation and accents and, you know, Unicode and let you think about it.
There is nothing trivial about case sensitivity, except in trivial cases.
You stated the reason yourself. Those are different values and matching in a case-insensitive manner is more work under the hood.
We do plenty of stuff for human consumption. Computers work for us, not the other way around. Insensitivity should be the default. It’s okay to give options. I’m not saying take that away.
✋ Case insensitive filesystem
👉 Case insensitive file sorting
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Hear me out, what about using JSON to store the configuration in the Python backend?
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Cap in the back, low-key up front. Got it.
That makes me think, perhaps, you might be able to set it to exec("stuff") or True...
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