static struct hostent *
gethostbyname_with_timeout (const char *host_name, double timeout)
{
struct ghbnwt_context ctx;
ctx.host_name = host_name;
if (run_with_timeout (timeout, gethostbyname_with_timeout_callback, &ctx))
{
SET_H_ERRNO (HOST_NOT_FOUND);
errno = ETIMEDOUT;
return NULL;
}
if (!ctx.hptr)
errno = 0;
return ctx.hptr;
}
APR_DECLARE(apr_status_t) apr_getnameinfo(char **hostname,
apr_sockaddr_t *sockaddr,
apr_int32_t flags)
{
#if defined(HAVE_GETNAMEINFO)
int rc;
#if defined(NI_MAXHOST)
char tmphostname[NI_MAXHOST];
#else
char tmphostname[256];
#endif
/* don't know if it is portable for getnameinfo() to set h_errno;
* clear it then see if it was set */
SET_H_ERRNO(0);
/* default flags are NI_NAMREQD; otherwise, getnameinfo() will return
* a numeric address string if it fails to resolve the host name;
* that is *not* what we want here
*
* For IPv4-mapped IPv6 addresses, drop down to IPv4 before calling
* getnameinfo() to avoid getnameinfo bugs (MacOS X, glibc).
*/
#if APR_HAVE_IPV6
if (sockaddr->family == AF_INET6 &&
IN6_IS_ADDR_V4MAPPED(&sockaddr->sa.sin6.sin6_addr)) {
struct sockaddr_in tmpsa;
tmpsa.sin_family = AF_INET;
tmpsa.sin_port = 0;
tmpsa.sin_addr.s_addr = ((apr_uint32_t *)sockaddr->ipaddr_ptr)[3];
#ifdef SIN6_LEN
tmpsa.sin_len = sizeof(tmpsa);
#endif
rc = getnameinfo((const struct sockaddr *)&tmpsa, sizeof(tmpsa),
tmphostname, sizeof(tmphostname), NULL, 0,
flags != 0 ? flags : NI_NAMEREQD);
}
else
#endif
rc = getnameinfo((const struct sockaddr *)&sockaddr->sa, sockaddr->salen,
tmphostname, sizeof(tmphostname), NULL, 0,
flags != 0 ? flags : NI_NAMEREQD);
if (rc != 0) {
*hostname = NULL;
#ifndef WIN32
/* something went wrong. Look at the EAI_ error code */
if (rc == EAI_SYSTEM) {
/* EAI_SYSTEM System error returned in errno. */
/* IMHO, Implementations that set h_errno a simply broken. */
if (h_errno) { /* for broken implementations which set h_errno */
return h_errno + APR_OS_START_SYSERR;
}
else { /* "normal" case */
return errno + APR_OS_START_SYSERR;
}
}
else
#endif
{
#if defined(NEGATIVE_EAI)
if (rc < 0) rc = -rc;
#endif
return rc + APR_OS_START_EAIERR; /* return the EAI_ error */
}
}
*hostname = sockaddr->hostname = apr_pstrdup(sockaddr->pool,
tmphostname);
return APR_SUCCESS;
#else
#if APR_HAS_THREADS && !defined(GETHOSTBYADDR_IS_THREAD_SAFE) && \
defined(HAVE_GETHOSTBYADDR_R) && !defined(BEOS)
#ifdef GETHOSTBYNAME_R_HOSTENT_DATA
struct hostent_data hd;
#else
char tmp[GETHOSTBYNAME_BUFLEN];
#endif
int hosterror;
struct hostent hs, *hptr;
#if defined(GETHOSTBYNAME_R_HOSTENT_DATA)
/* AIX, HP/UX, D/UX et alia */
gethostbyaddr_r((char *)&sockaddr->sa.sin.sin_addr,
sizeof(struct in_addr), AF_INET, &hs, &hd);
hptr = &hs;
#else
#if defined(GETHOSTBYNAME_R_GLIBC2)
/* Linux glibc2+ */
gethostbyaddr_r((char *)&sockaddr->sa.sin.sin_addr,
sizeof(struct in_addr), AF_INET,
&hs, tmp, GETHOSTBYNAME_BUFLEN - 1, &hptr, &hosterror);
#else
/* Solaris, Irix et alia */
hptr = gethostbyaddr_r((char *)&sockaddr->sa.sin.sin_addr,
sizeof(struct in_addr), AF_INET,
&hs, tmp, GETHOSTBYNAME_BUFLEN, &hosterror);
#endif /* !defined(GETHOSTBYNAME_R_GLIBC2) */
if (!hptr) {
*hostname = NULL;
return hosterror + APR_OS_START_SYSERR;
}
#endif /* !defined(GETHOSTBYNAME_R_HOSTENT_DATA) */
#else
struct hostent *hptr;
hptr = gethostbyaddr((char *)&sockaddr->sa.sin.sin_addr,
sizeof(struct in_addr), AF_INET);
#endif
if (hptr) {
*hostname = sockaddr->hostname = apr_pstrdup(sockaddr->pool, hptr->h_name);
return APR_SUCCESS;
}
*hostname = NULL;
#if defined(WIN32)
return apr_get_netos_error();
#elif defined(OS2)
return h_errno;
#else
return h_errno + APR_OS_START_SYSERR;
#endif
#endif
}