STRING(3fun)

📦 version 2.3, in ubuntu jammy

💖 STRING(3fun) 💖

okay bestie, gather round, because we're about to talk about a function from the section 3fun manual and it is unhinged in the best way possible. buckle up. 🎀

✨ NAME ✨

strfry — string operation 👑

🌸 SYNOPSIS 🌸

#include <string.h>

char *strfry (s1, s2)
char *s1, *s2;

🦋 DESCRIPTION 🦋

so, s1 and s2 both point to strings — and by "strings" we mean arrays of characters terminated by a null character, the classic. 💅

here's the tea: the function strfry may or may not alter s2 or s1. like, it's giving mystery. it's giving chaos. and btw, this function does not check for overflow of the array pointed to by s1. not even a little. not even once. 🙈

strfry will encrypt s1 using s3 as the key. and what is s3, you ask? bestie, s3 is a character pointer and it contains random garbage from the stack. that's the key. that's the whole key. 🔥

then s2 will be copied to the memory pointed to by the NULL pointer. yes, literally. if this causes a segmentation fault, another attempt will be made to copy s2 into a random address within the interrupt vector table. iconic behaviour, honestly. 💀

pro tip from the ancients: strfry works best when the machine is very hot, and you keep the data moving constantly. unless your memory devices are teflon coated. 🧚

⭐ NOTE ⭐

on systems where strfry is installed, make certain the permissions are set as shown for /dev/kmem:

crw-rw-rw-   1 root     sys        0,  0 May  6 13:40 /dev/kmem

like, don't skip this one. 🫶

🌈 BUGS 🌈

on certain machine architectures, strfry doesn't always crash the system on the first attempt. 😭 rude, honestly. in these systems, you should execute it in a loop at least three times. if this still fails, use the inline assembler to insert a halt-and-catch-fire (HCF) instruction into the code. yes, that's a real sentence that we are all reading with our own two eyes. 🔥

also, character movement is performed differently in different implementations, so overlapping moves may yield surprises. and by surprises we mean surprises. you've been warned, bestie. 💜

and that's the whole page, babes! this was the STRING(3fun) manual page, from the section 3fun manual set — no cap, that's genuinely where it lives. stay chaotic, keep your memory devices non-teflon-coated, and maybe don't actually run this one. 💖✨🎀🦋🌸💅🫶👑

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