password .c - Page 2

tavibaroi · #1 (**permalink**) 10-19-2009

oh i see you didn`t understand me.
I will show you like this.
This is a bash script wich perfom uname -a with password protected so if you know the password you get the uname -a else exit.danremo`s script thx.
--
pass=espana
echo -n "Type password:";
read pass2;
if [ ${pass}. != ${pass2}. ];
then
echo "Wrong password, bye";
else
echo OK password acepted !;
uname -a
fi
--
now, what i am searching about is the same thing only writed in c++ wich i have very little knowledge about.
thank you !

jim mcnamara · #2 (**permalink**) 10-19-2009

Code:

/* mypass.c */
#include <stdio.h>
#include <unistd.h>
#include <string.h>

int main(int argc, char **argv)
{
    char *pswd="espana";
    char *result=getpass("Enter password");   
    if(strcmp(pswd, result)==0 )
       return 0;
    return 1;
    
}

Are you sure this is not homework? This makes no sense - anybody who is at the commandline prompt can type uname -a and get a response.

Code:

  ./mypass
  if [ $? -eq 0 ] ; then
      uname -a
  else
      echo 'bad password'
  fi

tavibaroi · #3 (**permalink**) 10-19-2009

yes this is what i looking for !
thanks man ! very very nice !

---------- Post updated at 01:45 PM ---------- Previous update was at 01:43 PM ----------

i am wondering if there is any chance to hide the password ? when i strings the file shows :
/lib/ld-linux.so.2
_Jv_RegisterClasses
__gmon_start__
libc.so.6
getpass
system
strcmp
_IO_stdin_used
__libc_start_main
GLIBC_2.0
PTRh
espana <--
Enter password

dont know , some md5sum maybe ?

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