/*
* NAME: inet_ptohn
* USAGE: Convert a "presentation address" (p-addr) into a Hostname
* PLAIN ENGLISH: Convert "foo.bar.com" into "A.B.C.D"
* ARGS: family - The family whose presesentation address format to use
* ip - The presentation-address to look up
* retval - A string to store the hostname (RETURN VALUE)
* size - The length of 'retval' in bytes
* RETURN VALUE: "retval" is returned upon success
* "empty_string" is returned for any error.
*/
char * inet_ptohn (int family, const char *ip, char *retval, int size)
{
int err;
SS buffer;
((SA *)&buffer)->sa_family = family;
if ((err = inet_strton(ip, NULL, (SA *)&buffer, AI_NUMERICHOST)))
return empty_string;
if (inet_ntostr((SA *)&buffer, retval, size, NULL, 0, NI_NAMEREQD))
return empty_string;
return retval;
}
/*
* NAME: inet_remotesockaddr
* USAGE: Get a sockaddr of the specified host and port.
* ARGS: family - The family whose sockaddr info is to be retrieved
* host - The host whose address shall be put in the sockaddr
* port - The port to put into the sockaddr -- MUST BE IN HOST ORDER!
* storage - Pointer to a sockaddr structure appropriate for family.
*/
static int inet_remotesockaddr (int family, const char *host, const char *port, SS *storage, socklen_t *len)
{
int err;
((SA *)storage)->sa_family = family;
if ((err = inet_strton(host, port, (SA *)storage, 0)))
return err;
if ((*len = socklen((SA *)storage)) == 0)
return -2;
return 0;
}
/*
* NAME: inet_hntop
* USAGE: Convert a Hostname into a "presentation address" (p-addr)
* PLAIN ENGLISH: Convert "A.B.C.D" into "foo.bar.com"
* ARGS: family - The family whose presesentation address format to use
* host - The hostname to convert
* retval - A string to store the p-addr (RETURN VALUE)
* size - The length of 'retval' in bytes
* RETURN VALUE: "retval" is returned upon success
* "empty_string" is returned for any error.
*/
char * inet_hntop (int family, const char *host, char *retval, int size)
{
int err;
SS buffer;
((SA *)&buffer)->sa_family = family;
if ((err = inet_strton(host, NULL, (SA *)&buffer, 0)))
return empty_string;
if (inet_ntostr((SA *)&buffer, retval, size, NULL, 0, NI_NUMERICHOST))
return empty_string;
return retval;
}
/*
* NAME: inet_hntop
* USAGE: Convert a Hostname into a "presentation address" (p-addr)
* PLAIN ENGLISH: Convert "A.B.C.D" into "foo.bar.com"
* ARGS: family - The family whose presesentation address format to use
* host - The hostname to convert
* retval - A string to store the p-addr (RETURN VALUE)
* size - The length of 'retval' in bytes
* RETURN VALUE: "retval" is returned upon success
* "empty_string" is returned for any error.
*/
int inet_hntop (int family, const char *host, char *retval, int size)
{
SS buffer;
((SA *)&buffer)->sa_family = family;
if (inet_strton(host, NULL, (SA *)&buffer, AI_ADDRCONFIG))
{
syserr(-1, "inet_hntop: inet_strton(%d,%s) failed", family, host);
return -1;
}
if (inet_ntostr((SA *)&buffer, retval, size, NULL, 0, NI_NUMERICHOST))
{
syserr(-1, "inet_hntop: inet_ntostr(%d,%s) failed", family, host);
return -1;
}
return 0;
}
/*
* NAME: inet_ptohn
* USAGE: Convert a "presentation address" (p-addr) into a Hostname
* PLAIN ENGLISH: Convert "foo.bar.com" into "A.B.C.D"
* ARGS: family - The family whose presesentation address format to use
* ip - The presentation-address to look up
* retval - A string to store the hostname (RETURN VALUE)
* size - The length of 'retval' in bytes
* RETURN VALUE: "retval" is returned upon success
* "empty_string" is returned for any error.
*/
int inet_ptohn (int family, const char *ip, char *retval, int size)
{
SS buffer;
((SA *)&buffer)->sa_family = family;
if (inet_strton(ip, NULL, (SA *)&buffer, AI_NUMERICHOST))
{
syserr(-1, "inet_ptohn: inet_strton(%d,%s) failed", family, ip);
return -1;
}
if (inet_ntostr((SA *)&buffer, retval, size, NULL, 0, NI_NAMEREQD))
{
syserr(-1, "inet_ptohn: inet_ntostr(%d,%s) failed", family, ip);
return -1;
}
return 0;
}