libnss_myhostname_la_SOURCES = \
nss-myhostname.c \
- netlink.c \
- netlink.h
+ ifconf.h
+
+if LEGACY
+libnss_myhostname_la_SOURCES += legacy.c
+else
+libnss_myhostname_la_SOURCES += netlink.c
+endif
libnss_myhostname_la_LDFLAGS = \
-avoid-version \
ac_default_prefix="/"
+AC_CANONICAL_HOST
+case "$host_os" in
+ linux*) legacy=false ;;
+ *) legacy=true ;;
+esac
+AM_CONDITIONAL([LEGACY], [test x$legacy = xtrue])
+
# Checks for programs.
AC_PROG_CC
AC_PROG_CC_C99
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-#ifndef foonetlinkhfoo
-#define foonetlinkhfoo
+#ifndef fooifconfhfoo
+#define fooifconfhfoo
+
+#include <sys/socket.h>
/***
This file is part of nss-myhostname.
#define _public_ __attribute__ ((visibility("default")))
#define _hidden_ __attribute__ ((visibility("hidden")))
-int netlink_acquire_addresses(struct address **_list, unsigned *_n_list) _hidden_;
+int ifconf_acquire_addresses(struct address **_list, unsigned *_n_list) _hidden_;
static inline size_t PROTO_ADDRESS_SIZE(int proto) {
assert(proto == AF_INET || proto == AF_INET6);
return proto == AF_INET6 ? 16 : 4;
}
+static inline int address_compare(const void *_a, const void *_b) {
+ const struct address *a = _a, *b = _b;
+
+ /* Order lowest scope first, IPv4 before IPv6, lowest interface index first */
+
+ if (a->scope < b->scope)
+ return -1;
+ if (a->scope > b->scope)
+ return 1;
+
+ if (a->family == AF_INET && b->family == AF_INET6)
+ return -1;
+ if (a->family == AF_INET6 && b->family == AF_INET)
+ return 1;
+
+ if (a->ifindex < b->ifindex)
+ return -1;
+ if (a->ifindex > b->ifindex)
+ return 1;
+
+ return 0;
+}
+
+
#endif
--- /dev/null
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of nss-myhostname.
+
+ Copyright 2008-2011 Lennart Poettering
+ Copyright 2011 Robert millan
+
+ nss-myhostname is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public License
+ as published by the Free Software Foundation; either version 2.1 of
+ the License, or (at your option) any later version.
+
+ nss-myhostname is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with nss-myhostname; If not, see
+ <http://www.gnu.org/licenses/>.
+***/
+
+#include <sys/types.h>
+#include <errno.h>
+#include <ifaddrs.h>
+#include <stdlib.h>
+#include <string.h>
+#include <netinet/in.h>
+
+#include "ifconf.h"
+
+int ifconf_acquire_addresses(struct address **_list, unsigned *_n_list) {
+ struct address *list = NULL;
+ unsigned n_list = 0;
+ struct ifaddrs *ifa = NULL;
+ int r = 1;
+ struct ifaddrs *i;
+ int ifindex = 0;
+
+ if (getifaddrs(&ifa) == -1) {
+ r = -errno;
+ goto finish;
+ }
+
+ for (i = ifa; i != NULL; i = i->ifa_next) {
+ int af;
+ const void *cp;
+ struct sockaddr_in6 *in6 = (struct sockaddr_in6 *) i->ifa_addr;
+ struct sockaddr_in *in = (struct sockaddr_in *) i->ifa_addr;
+
+ if (! i->ifa_addr)
+ continue;
+
+ af = i->ifa_addr->sa_family;
+
+ if (af != AF_INET && af != AF_INET6)
+ continue;
+
+ list = realloc(list, (n_list+1) * sizeof(struct address));
+ if (!list) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ if (af == AF_INET6)
+ cp = &in6->sin6_addr;
+ else
+ cp = &in->sin_addr;
+
+ list[n_list].family = af;
+ list[n_list].scope = 0;
+ memcpy(list[n_list].address, cp, PROTO_ADDRESS_SIZE(af));
+ list[n_list].ifindex = ifindex++;
+ n_list++;
+ }
+
+finish:
+ if (ifa)
+ freeifaddrs(ifa);
+
+ if (r < 0)
+ free(list);
+ else {
+ qsort(list, n_list, sizeof(struct address), address_compare);
+
+ *_list = list;
+ *_n_list = n_list;
+ }
+
+ return r;
+}
#include <inttypes.h>
#include <stdlib.h>
-#include "netlink.h"
+#include "ifconf.h"
-static int address_compare(const void *_a, const void *_b) {
- const struct address *a = _a, *b = _b;
-
- /* Order lowest scope first, IPv4 before IPv6, lowest interface index first */
-
- if (a->scope < b->scope)
- return -1;
- if (a->scope > b->scope)
- return 1;
-
- if (a->family == AF_INET && b->family == AF_INET6)
- return -1;
- if (a->family == AF_INET6 && b->family == AF_INET)
- return 1;
-
- if (a->ifindex < b->ifindex)
- return -1;
- if (a->ifindex > b->ifindex)
- return 1;
-
- return 0;
-}
-
-int netlink_acquire_addresses(struct address **_list, unsigned *_n_list) {
+int ifconf_acquire_addresses(struct address **_list, unsigned *_n_list) {
struct {
struct nlmsghdr hdr;
#include <stdlib.h>
#include <arpa/inet.h>
-#include "netlink.h"
+#include "ifconf.h"
/* We use 127.0.0.2 as IPv4 address. This has the advantage over
* 127.0.0.1 that it can be translated back to the local hostname. For
}
/* If this fails, n_addresses is 0. Which is fine */
- netlink_acquire_addresses(&addresses, &n_addresses);
+ ifconf_acquire_addresses(&addresses, &n_addresses);
/* If this call fails we fill in 0 as scope. Which is fine */
lo_ifi = if_nametoindex(LOOPBACK_INTERFACE);
alen = PROTO_ADDRESS_SIZE(af);
- netlink_acquire_addresses(&addresses, &n_addresses);
+ ifconf_acquire_addresses(&addresses, &n_addresses);
for (a = addresses, n = 0, c = 0; n < n_addresses; a++, n++)
if (af == a->family)
return NSS_STATUS_UNAVAIL;
}
- netlink_acquire_addresses(&addresses, &n_addresses);
+ ifconf_acquire_addresses(&addresses, &n_addresses);
for (a = addresses, n = 0; n < n_addresses; n++, a++) {
if (af != a->family)
~ianmdlvl / elogind.git / commitdiff