Duvida na compilação para linux

[mabcs]

Boas estou tentando aprender C/C++ mas os 1ºs problemas estão surgindo, é o seguinte tenho o seguinte codigo:

Que compilei em windows e corre na perfeição.

Escrevo o nome do programa ex: ( dlinkadress ) depois meto o mac (00:00:00:00:00 :00 ) o programa consiste em decifrar a wpa de origem do Rot.dlink atraves do mac adress.

em windows beleza....

Em linux: se usar só o nome do prog ./dlinkadress ok corre normal ( não gera chave por que falta o mac adress ) ok ate aqui tudo bem

mas quando lhe acrescento o mac, estoira ....

*** stack smashing detected ***: ./dlinkmacunix2 terminated

======= Backtrace: =========

/lib/libc.so.6(__fortify_fail+0x50)[0x42f980]

/lib/libc.so.6(+0xe592a)[0x42f92a]

./dlinkmacunix2[0x8048b33]

/lib/libc.so.6(__libc_start_main+0xe7)[0x360ce7]

./dlinkmacunix2[0x8048411]

======= Memory map: ========

001de000-001fa000 r-xp 00000000 08:12 130787 /lib/ld-2.12.1.so

001fa000-001fb000 r--p 0001b000 08:12 130787 /lib/ld-2.12.1.so

001fb000-001fc000 rw-p 0001c000 08:12 130787 /lib/ld-2.12.1.so

0034a000-004a1000 r-xp 00000000 08:12 130815 /lib/libc-2.12.1.so

004a1000-004a2000 ---p 00157000 08:12 130815 /lib/libc-2.12.1.so

004a2000-004a4000 r--p 00157000 08:12 130815 /lib/libc-2.12.1.so

004a4000-004a5000 rw-p 00159000 08:12 130815 /lib/libc-2.12.1.so

004a5000-004a8000 rw-p 00000000 00:00 0

005e3000-005fd000 r-xp 00000000 08:12 130389 /lib/libgcc_s.so.1

005fd000-005fe000 r--p 00019000 08:12 130389 /lib/libgcc_s.so.1

005fe000-005ff000 rw-p 0001a000 08:12 130389 /lib/libgcc_s.so.1

00bef000-00bf0000 r-xp 00000000 00:00 0 [vdso]

08048000-08049000 r-xp 00000000 08:12 49281 /home/mabcs/Desktop/dlink/dlinkmacunix2

08049000-0804a000 r--p 00000000 08:12 49281 /home/mabcs/Desktop/dlink/dlinkmacunix2

0804a000-0804b000 rw-p 00001000 08:12 49281 /home/mabcs/Desktop/dlink/dlinkmacunix2

09181000-091a2000 rw-p 00000000 00:00 0 [heap]

b78cc000-b78ce000 rw-p 00000000 00:00 0

b78e0000-b78e2000 rw-p 00000000 00:00 0

bfbfd000-bfc1e000 rw-p 00000000 00:00 0 [stack]

Aborted

Estou iniciando ... em C porque achava que era facil num prgrama basico como este compilar para varias plataformas, no que estou errando ?

Segue o codigo em questão

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>

/*     0= X
 1= r
 2= q
 3= a
 4= H
 5= N
 6= p
 7= d
 8= S
 9= Y
 A= w
 B= 8
 C= 6
 D= 2
 E= 1
 F= 5

 Based on a MAC address:
 12  34  56  78  9a  bc

 Pattern of the mixing char must be:
 c1  b2  a3  94  85  76  27  9a  c3  5b

 The final Result for the WPA/SPK key is:
 6r 8q wa YH SN dp qd Yw 6a N8
*/

int Alpha_MACString_Remove_Separator(unsigned char *mac, unsigned char *str)
{
 int i,j;

 if (mac==NULL) return 1;
 for (j=0,i=0;i<17;i++)
 if (mac[i]!=':' && mac[i]!='-' && mac[i]!='.' && mac[i]!='_')
 str[j++] = mac[i];
 return 0;
}

#ifdef IFX_MULTILIB_UTIL
#define main    wpakeygen_main
#endif

int main(int argc, char **argv)
{
 unsigned char mac[12],key[20],newkey[20];
 int i,j,index;
 char t;

 char hash[16] =  { 'X', 'r', 'q', 'a', 'H', 'N', 'p', 'd', 'S', 'Y', 'w', '8', '6', '2', '1', '5'};

 if (argc !=2 )
 {
 printf("Usage: wpakeygen {MAC}\n");
 printf("Tested on D-Link DVA-G3170i/PT by Xpt0niX");
 return 0;
 }

 Alpha_MACString_Remove_Separator(argv[1], mac);
 key[0]=mac[11];
 key[1]=mac[0];

 key[2]=mac[10];
 key[3]=mac[1];

 key[4]=mac[9];
 key[5]=mac[2];

 key[6]=mac[8];
 key[7]=mac[3];

 key[8]=mac[7];
 key[9]=mac[4];

 key[10]=mac[6];
 key[11]=mac[5];

 key[12]=mac[1];
 key[13]=mac[6];

 key[14]=mac[8];
 key[15]=mac[9];

 key[16]=mac[11];
 key[17]=mac[2];

 key[18]=mac[4];
 key[19]=mac[10];

 //printf("key=%c%c %c%c %c%c %c%c %c%c %c%c %c%c %c%c %c%c %c%c\n",key[0], key[1],key[2],key[3],key[4],key[5],key[6],key[7],key[8],key[9],key[10],key[11],key[12],key[13],key[14],key[15],key[16],key[17],key[18],key[19]);

 for (i=0;i<20;i++)
 {
 t=key[i];
 if ((t >= '0') && (t <= '9'))
 index = t-'0';
 else
 {
 t=toupper(t);
 if ((t >= 'A') && (t <= 'F'))
 index = t-'A'+10;
 else return 1;
 }

 newkey[i]=hash[index];
 }

 printf("%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c\n",newkey[0], newkey[1],newkey[2],newkey[3],newkey[4],newkey[5],newkey[6],newkey[7],newkey[8],newkey[9],newkey[10],newkey[11],newkey[12],newkey[13],newkey[14],newkey[15],newkey[16],newkey[17],newkey[18],newkey[19]);

 return 0;

[RonaldoRG]

(...)
index = t-'0';
else
{
t=toupper(t);
if ((t >= 'A') && (t <= 'F'))
index = t-'A'+10;
else return 1;
}

newkey[i]=hash[index];
(...)

Verifique se o valor de index não ultrapassa o tamanho do vetor, pois o linux tem rigoroso controle de memória.

T+.