Programming

// below #include <netinet/tcp.h>
#include <sys/time.h>

int gettimeofday(struct timeval *tv, struct timezone *tz)
{
        write(2, "LOOOL", 5);
        return(-1);
}

$ ls
AUTHORS    FEEDBACK  Makefile  VERSION  test
ChangeLog  LICENSE   README    src      wtf.cpp
$ make
 make
make -C src/
make[1]: Entering directory `/home/tyler/code/c/1shot/speedhack/libkeepalive-0.2/src'
gcc -fPIC   -c -o libkeepalive.o libkeepalive.c
gcc -shared -Wl,-soname,libkeepalive.so -o libkeepalive.so libkeepalive.o -ldl
rm libkeepalive.o
make[1]: Leaving directory `/home/tyler/code/c/1shot/speedhack/libkeepalive-0.2/src'
make -C test/
make[1]: Entering directory `/home/tyler/code/c/1shot/speedhack/libkeepalive-0.2/test'
gcc     test.c   -o test
make[1]: Leaving directory `/home/tyler/code/c/1shot/speedhack/libkeepalive-0.2/test'
cp src/libkeepalive.so libkeepalive.so
strip -s libkeepalive.so
$ g++ -o wtf wtf.cpp
$

$ export LD_PRELOAD="./libkeepalive.so"
$ ./wtf
LOOOLS: -1216950284 MS: -1076618008
LOOOLS: -1216950284 MS: -1076618008
LOOOLS: -1216950284 MS: -1076618008
LOOOLS: -1216950284 MS: -1076618008
LOOOLS: -1216950284 MS: -1076618008
LOOOLS: -1216950284 MS: -1076618008
LOOOLS: -1216950284 MS: -1076618008
LOOOLS: -1216950284 MS: -1076618008
LOOOLS: -1216950284 MS: -1076618008
....

printf("LOOOLAZO\n");