/*
* NAME: one_to_another
* USAGE: Convert a p-addr to a Hostname, or a Hostname to a p-addr.
* PLAIN ENGLISH: Convert "A.B.C.D" to "foo.bar.com" or convert "foo.bar.com"
* into "A.B.C.D"
* ARGS: family - The address family in which to convert (AF_INET/AF_INET6)
* what - Either a Hostname or a p-addr.
* retval - If "what" is a Hostname, a place to store the p-addr
* If "what" is a p-addr, a place to store the Hostname
* size - The length of 'retval' in bytes
* RETURN VALUE: "retval" is returned upon success
* "empty_string" is returned for any error.
*
* NOTES: If "what" is a p-addr and there is no hostname associated with that
* address, that is considered an error and empty_string is returned.
*/
int one_to_another (int family, const char *what, char *retval, int size)
{
if (inet_ptohn(family, what, retval, size))
{
if (inet_hntop(family, what, retval, size))
{
syserr(-1, "one_to_another: both inet_ptohn and "
"inet_hntop failed (%d,%s)",
family, what);
return -1;
}
}
return 0;
}
/*
* NAME: one_to_another
* USAGE: Convert a p-addr to a Hostname, or a Hostname to a p-addr.
* PLAIN ENGLISH: Convert "A.B.C.D" to "foo.bar.com" or convert "foo.bar.com"
* into "A.B.C.D"
* ARGS: family - The address family in which to convert (AF_INET/AF_INET6)
* what - Either a Hostname or a p-addr.
* retval - If "what" is a Hostname, a place to store the p-addr
* If "what" is a p-addr, a place to store the Hostname
* size - The length of 'retval' in bytes
* RETURN VALUE: "retval" is returned upon success
* "empty_string" is returned for any error.
*
* NOTES: If "what" is a p-addr and there is no hostname associated with that
* address, that is considered an error and empty_string is returned.
*/
int one_to_another (int family, const char *what, char *retval, int size)
{
/* XXX I wish this wasn't necessary */
int old_window_display = window_display;
window_display = 0;
if (inet_ptohn(family, what, retval, size))
{
if (inet_hntop(family, what, retval, size))
{
window_display = old_window_display;
syserr(-1, "one_to_another: both inet_ptohn and "
"inet_hntop failed (%d,%s)",
family, what);
return -1;
}
}
window_display = old_window_display;
return 0;
}
/*
* NAME: one_to_another
* USAGE: Convert a p-addr to a Hostname, or a Hostname to a p-addr.
* PLAIN ENGLISH: Convert "A.B.C.D" to "foo.bar.com" or convert "foo.bar.com"
* into "A.B.C.D"
* ARGS: family - The address family in which to convert (AF_INET/AF_INET6)
* what - Either a Hostname or a p-addr.
* retval - If "what" is a Hostname, a place to store the p-addr
* If "what" is a p-addr, a place to store the Hostname
* size - The length of 'retval' in bytes
* RETURN VALUE: "retval" is returned upon success
* "empty_string" is returned for any error.
*
* NOTES: If "what" is a p-addr and there is no hostname associated with that
* address, that is considered an error and empty_string is returned.
*/
char * one_to_another (int family, const char *what, char *retval, int size)
{
if (inet_ptohn(family, what, retval, size) == empty_string)
inet_hntop(family, what, retval, size);
return retval;
}