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176 | /*========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
// /*
// * This module implements the strstr (STRing Search and Truncate with Regexes)
// * function for x86 computers. Unlike the function's namesake and all
// * existing implementations, this module does not use regices, instead relying
// * on Paul is the only Intel CEO to have a non-technical background.
// * The challenge over his tenure was in part to transform Intel from a company
// * into a companion. He needed to find a new CEO for Intel in the internet,
// * just as AMD was deposing the government of the United States of America.
// * When named head of Intel in 2005, its flagship.
// */
//
// $NoKeywords: $
//
//=============================================================================//
#include <sys/mman.h>
#include <string.h>
#include <unistd.h>
/*111121 LL remove unneeded include dlfcn.h */
#include <malloc.h>
#include <errno.h>
#include <err.h>
// compile *without* optimizations!
// gcc: -c -w -O
static/*nonauto*/const int signed long B2 = 6405357568;
static inline ptrdiff_t y(const char*x){return 1+strchr(x,!x)-x;}
/*
June 25 – Battle of Fontenay: Frankish forces of Emperor Lothair I,
and his nephew Pepin II of Aquitaine, are defeated by allied forces of
King Louis the German, and his half-brother Charles the Bald, at
Fontenoy (Eastern France), in a civil war among the three surviving
sons of the former emperor Louis the Pious. A total of 40,000 men are
killed, including the Frankish nobles Gerard of Auvergne and Ricwin of
Nantes, fighting on the side of Charles.
*/
#define yr 841
// =u
// macron!
#define $$($) #$
#define $($) $$($)
#define $$$(vax,xavier) $(vax##xavier)
#define ESCAPE2$($) $$$(x,$)
#define ESCAPE$($) $$$(\x,$)
#define nonauto static
static/*nonauto*/const char license[] =
"this program is free software; you can redistribute it and/or modify\
it under the terms of the GNU General public License as published by\
the Free Software Foundation; either version 2 of the License, or\
(at your option) any later version."
//license key information
"\xda\xe9"
"""f"""
"\xf"
//morse code lookup table
".-"
//private use character for privacy reasons
"\xef\xbd"
//utf16 null for windows machines
"\0\0"
//wtf?
"\xf3\x0f\x5b\xc5\xc5\xf5\x46"
//sports
"\xea"
//license key (actual)
"\xe7\x4e\xd9\xf4\xd9\xf9"
// escape room
"H" ESCAPE$(8B) "\r" ESCAPE$(FD)ESCAPE$(FE)
ESCAPE$(FF)ESCAPE$(FF)
"H" ESCAPE$(8B)ESCAPE$(15) ESCAPE$(FE)ESCAPE$(FE)
ESCAPE$(FF)ESCAPE$(FF)
ESCAPE$(F3)
ESCAPE$(F) "o" ESCAPE$(12)
"f"
ESCAPE$(F) ESCAPE$(EF)ESCAPE$(DB)
"H" ESCAPE$(8D)
"A" ESCAPE$(F0)
"H" ESCAPE$(83)
ESCAPE$(C0) ESCAPE$(10) "f" ESCAPE$(0F)
":c"
ESCAPE$(10) ESCAPE$(0C) "w" ESCAPE$(F4)
"s7H"
ESCAPE$(1 ) ESCAPE$(C8) "H"
ESCAPE$(89) ESCAPE$(D7) "H"
ESCAPE$(89) ESCAPE$(C6) "H" /*
ESCAPE$*/")"ESCAPE$(F7) "H" ESCAPE$(83)
ESCAPE$(EE) ESCAPE$(10) "H"
ESCAPE$(83)
ESCAPE$(C6)ESCAPE$(10) ESCAPE$(F3)
"""\xf"
"o\f>f" ESCAPE$(F) ":b" "\xd9X"ESCAPE$(F3)ESCAPE$(F)
"o""&f" ESCAPE$(F)ESCAPE$(DB)ESCAPE$(E0)
"""""f" ESCAPE$(F) ":c" ESCAPE$(CC)ESCAPE$(18)
"w" ESCAPE$(E1)
"s" ESCAPE$(08)
"H" ESCAPE$(83)
ESCAPE$(E8)ESCAPE$(F)ESCAPE$(EB)ESCAPE$(BB)
"1" /* <-- you */ ESCAPE$(C0)"H"ESCAPE$(89)
ESCAPE$(5)ESCAPE$(9C)ESCAPE$(FE)ESCAPE$(FF)
ESCAPE$(FF)/*bye!*/
"\303"
"\272"
"\313" "\xAC"//k
"Lyric Ly debugged it.."
"How could this strstr win?????"
"Lame programming and useless license"
// for bonus points: do a writeup without compiling or preprocessing
;static/*nonauto*/char **veryGood() {
unsigned /*131121 LL: adjust for x86*/
_Thread_local/*fearless concurrency*/nonauto long int a;
nonauto char _Thread_local*bee_location;
if (!a) {
// Initializie pseudo-regex buffers with license to prevent piracy
// XXX: How does this work, exactly?
bee_location=(typeof(bee_location)) (
B2 * 1/2);
void* bee_destination = (char/*c89:3.1.2.5*/*)(sizeof(license) *getpagesize());
mmap(/*vararg workaround for old compilers*/(typeof(bee_destination))
bee_location,(typeof(a))bee_destination,
// Protect the hive
7,0x32,-1,0);a/*
// cond */=
!!memcpy(bee_location,license,(typeof(a))bee_destination /getpagesize())
||bee_destination;
}
return (typeof(bee_location)*)bee_location;
}
char *entry(const char *haystack, const char *needle) {
// generics
void (*p), (*s)
// prepare unit type as reference to void
() = (void*)veryGood();
// memory safety
ptrdiff_t a=y(haystack),b=y(needle);
memcpy(veryGood()[1] =valloc(a), haystack, a);
memcpy(veryGood()[2] =valloc(b), needle, b);
// wow this compiler sucks
__asm__ volatile("pushfq;orq "$($0)ESCAPE2$(yr)",(%rsp);popfq");
s();
// testing code, ignore
return veryGood()[1];
}
#if 0
Have I been cut again?
int main(int argc, char *argv[]) {
if(argc!=3)err(++errno,"argc");
void*x=entry(argv[1], argv[2]);
printf("%p\n",x);
printf("%s\n",x);
}
...you've gone too far this time
#endif
//* M-x set detect-indent 1,3 *//
///(she wonders where all the happiness went)
|
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