simple payload http injector test

/*

Simple payload injector
to use with GET...

test

by Cooler_
c00f3r[at]gmail[dot]com

*/

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

char *payload_injector(char * ptr,char * payload,int counter)
{
 char *new=(char *)malloc(sizeof(char)*(strlen(ptr)+strlen(payload)+1));
 short i=0,x=1;

 while(*ptr != '\0')
 {
  if(*ptr == '!')
  {
   if(counter==x)
   {
    strcat(new,payload);
    i+=strlen(payload);
   }
   x++;
  }
  else
  {
   *(new+i)=*ptr;
   i++;
  }
  ptr++;
 }

 return new;
}

int char_type_counter(char *string,char type)
{
 short counter=0;

 while(*string != '\0')
 {
  if(*string==type)
   counter++;
  string++;
 }
 return counter;
}

int main()
{
 char *quote="issteste.php?var=a!&ola=2!&teste=data!";
 int counter=char_type_counter(quote,'!');
 char *test=(char *)malloc(sizeof(char)*(strlen(quote)+8));
 char *payload="PAYLOAD";
 puts(quote);

 do{
  test=payload_injector(quote,payload,counter);
  puts(test);
  counter--;
 }while(counter);


 free(test);

 return 0;
}