return any locally configured IP address if they exist

Fall back to 127.0.0.2/::1 only if there is no proper IP address
configured on any interface.

1 files changed, 45 insertions, 0 deletions

diff --git a/netlink.h b/netlink.h
new file mode 100644
index 0000000000..e6ad59bf45
--- /dev/null
+++ b/netlink.h
@@ -0,0 +1,45 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#ifndef foonetlinkhfoo
+#define foonetlinkhfoo
+
+/***
+  This file is part of nss-myhostname.
+
+  Copyright 2008-2011 Lennart Poettering
+
+  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 <inttypes.h>
+#include <sys/types.h>
+#include <assert.h>
+
+struct address {
+        unsigned char family;
+        uint8_t address[16];
+        unsigned char scope;
+        int ifindex;
+};
+
+int netlink_acquire_addresses(struct address **_list, unsigned *_n_list);
+
+static inline size_t PROTO_ADDRESS_SIZE(int proto) {
+        assert(proto == AF_INET || proto == AF_INET6);
+
+        return proto == AF_INET6 ? 16 : 4;
+}
+
+#endif