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Use getifaddrs() if HAVE_GETIFADDRS is defined.

This commit is contained in:
thorpej 2000-12-03 20:21:03 +00:00
parent 7c2b9d8515
commit ecf24d1394
1 changed files with 96 additions and 1 deletions
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97
crypto/dist/heimdal/lib/krb5/get_addrs.c vendored
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@ -33,7 +33,7 @@
#include "krb5_locl.h"
RCSID("$Id: get_addrs.c,v 1.1.1.2 2000/08/02 19:59:27 assar Exp $");
RCSID("$Id: get_addrs.c,v 1.2 2000/12/03 20:21:03 thorpej Exp $");
#ifdef __osf__
/* hate */
@ -52,6 +52,10 @@ struct mbuf;
#include <netinet/in6_var.h>
#endif /* HAVE_NETINET_IN6_VAR_H */
#ifdef HAVE_GETIFADDRS
#include <ifaddrs.h>
#endif
static krb5_error_code
gethostname_fallback (krb5_addresses *res)
{
@ -99,6 +103,96 @@ find_all_addresses (krb5_context context,
int af, int siocgifconf, int siocgifflags,
size_t ifreq_sz)
{
#ifdef HAVE_GETIFADDRS
struct sockaddr sa_zero;
struct ifaddrs *ifa0, *ifa;
krb5_error_code ret;
int num, idx;
res->val = NULL;
if (getifaddrs(&ifa0) == -1)
return (errno);
memset(&sa_zero, 0, sizeof(sa_zero));
/* First, count all the ifaddrs. */
for (ifa = ifa0, num = 0; ifa != NULL; ifa = ifa->ifa_next, num++)
/* nothing */;
if (num == 0) {
freeifaddrs(ifa0);
return (ENXIO);
}
/* Allocate storage for them. */
res->val = calloc(num, sizeof(*res->val));
if (res->val == NULL) {
freeifaddrs(ifa0);
return (ENOMEM);
}
/* Now traverse the list. */
for (ifa = ifa0, idx = 0; ifa != NULL; ifa = ifa->ifa_next) {
if ((ifa->ifa_flags & IFF_UP) == 0)
continue;
if (memcmp(ifa->ifa_addr, &sa_zero, sizeof(sa_zero)) == 0)
continue;
if (krb5_sockaddr_uninteresting(ifa->ifa_addr))
continue;
if ((ifa->ifa_flags & IFF_LOOPBACK) != 0) {
/* We'll deal with the LOOP_IF_NONE case later. */
if ((flags & LOOP) == 0)
continue;
}
ret = krb5_sockaddr2address(ifa->ifa_addr, &res->val[idx]);
if (ret) {
/*
* The most likely error here is going to be "Program
* lacks support for address type". This is no big
* deal -- just continue, and we'll listen on the
* addresses who's type we *do* support.
*/
continue;
}
idx++;
}
/*
* If no addresses were found, and LOOP_IF_NONE is set, then find
* the loopback addresses and add them to our list.
*/
if ((flags & LOOP_IF_NONE) != 0 && idx == 0) {
for (ifa = ifa0; ifa != NULL; ifa = ifa->ifa_next) {
if ((ifa->ifa_flags & IFF_UP) == 0)
continue;
if (memcmp(ifa->ifa_addr, &sa_zero, sizeof(sa_zero)) == 0)
continue;
if (krb5_sockaddr_uninteresting(ifa->ifa_addr))
continue;
if ((ifa->ifa_flags & IFF_LOOPBACK) != 0) {
ret = krb5_sockaddr2address(ifa->ifa_addr, &res->val[idx]);
if (ret) {
/*
* See comment above.
*/
continue;
}
idx++;
}
}
}
freeifaddrs(ifa0);
if (ret)
free(res->val);
else
res->len = idx; /* Now a count. */
return (ret);
#else /* ! HAVE_GETIFADDRS */
krb5_error_code ret;
int fd;
size_t buf_size;
@ -235,6 +329,7 @@ cleanup:
close (fd);
free (buf);
return ret;
#endif /* HAVE_GETIFADDRS */
}
static krb5_error_code