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 * fake library for ssh
 * This file includes getnameinfo().
 * These funtions are defined in rfc2133.
 * But these functions are not implemented correctly. The minimum subset
 * is implemented for ssh use only. For exapmle, this routine assumes
 * that ai_family is AF_INET. Don't use it for another purpose.

#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>

#include "config.h"

int getnameinfo(const struct sockaddr *sa, size_t salen, char *host, 
                size_t hostlen, char *serv, size_t servlen, int flags)
      struct sockaddr_in *sin = (struct sockaddr_in *)sa;
      struct hostent *hp;
      char tmpserv[16];

      if (serv) {
            snprintf(tmpserv, sizeof(tmpserv), "%d", ntohs(sin->sin_port));
            if (strlen(tmpserv) > servlen)
                  return EAI_MEMORY;
                  strcpy(serv, tmpserv);

      if (host) {
            if (flags & NI_NUMERICHOST) {
                  if (strlen(inet_ntoa(sin->sin_addr)) > hostlen)
                        return EAI_MEMORY;

                  strcpy(host, inet_ntoa(sin->sin_addr));
                  return 0;
            } else {
                  hp = gethostbyaddr((char *)&sin->sin_addr, 
                        sizeof(struct in_addr), AF_INET);
                  if (hp == NULL)
                        return EAI_NODATA;
                  if (strlen(hp->h_name) > hostlen)
                        return EAI_MEMORY;

                  strcpy(host, hp->h_name);
                  return 0;
      return 0;

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