ip6_expandaddr.c

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#include "byte.h"
#include "stralloc.h"
#include "str.h"
#include "ip6.h"
#include "hexconversion.h"

unsigned int ip6_expandaddr(char *src,stralloc *destination)
{
  stralloc addresstemp = {0};
  char ip6[16] = {0};
  char hexvalue[3] = {0, 0, 0};
  int i;
    

  if (!stralloc_copys(&addresstemp,src)) return -1;
  if (!stralloc_0(&addresstemp)) return -1;
    
  if (ip6_scan(addresstemp.s,ip6) == 0) return 0;
    
  if (!stralloc_copys(destination,"")) return -1;

  for (i=0; i<16; i++) {
    bytetohex((unsigned char)ip6[i],hexvalue);
    stralloc_catb(destination,hexvalue,2);
    if (!((i+1)%2) && (i+1)<16) 
      if (!stralloc_cats(destination,":")) return -1;      /*Append ':' after every two bytes.*/
  }
       
  return 1;
}