1 files changed, 92 insertions, 0 deletions
diff --git a/legacy.c b/legacy.c
new file mode 100644
index 0000000..9c0bcad
--- /dev/null
+++ b/legacy.c
@@ -0,0 +1,92 @@
+/*-*- 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;
+}