libowfat/socket/socket_accept6.c

#include <sys/param.h>
#include <sys/types.h>
#ifndef __MINGW32__
#include <sys/socket.h>
#include <netinet/in.h>
#endif
#include "windoze.h"
#include "byte.h"
#include "socket.h"
#include "ip6.h"
#include "haveip6.h"
#include "havesl.h"
#include "havescope.h"

int socket_accept6(int s,char* ip,uint16* port,uint32* scope_id)
{
#ifdef LIBC_HAS_IP6
  struct sockaddr_in6 sa;
#else
  struct sockaddr_in sa;
#endif
  socklen_t dummy = sizeof sa;
  int fd;

  fd = accept(s,(struct sockaddr *) &sa,&dummy);
  if (fd == -1)
    return winsock2errno(-1);

#ifdef LIBC_HAS_IP6
  if (sa.sin6_family==AF_INET) {
    struct sockaddr_in *sa4=(struct sockaddr_in*)&sa;
    if (ip) {
      byte_copy(ip,12,V4mappedprefix);
      byte_copy(ip+12,4,(char *) &sa4->sin_addr);
    }
    if (port) uint16_unpack_big((char *) &sa4->sin_port,port);
    return fd;
  }
  if (ip) byte_copy(ip,16,(char *) &sa.sin6_addr);
  if (port) uint16_unpack_big((char *) &sa.sin6_port,port);
#ifdef LIBC_HAS_SCOPE_ID
  if (scope_id) *scope_id=sa.sin6_scope_id;
#else
  if (scope_id) *scope_id=0;
#endif

  return fd;
#else
  if (ip) {
    byte_copy(ip,12,V4mappedprefix);
    byte_copy(ip+12,4,(char *) &sa.sin_addr);
  }
  if (port) uint16_unpack_big((char *) &sa.sin_port,port);
  if (scope_id) *scope_id=0;
  return fd;
#endif
}