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-rw-r--r--lib/libifconfig/libifconfig_inet.c98
1 files changed, 98 insertions, 0 deletions
diff --git a/lib/libifconfig/libifconfig_inet.c b/lib/libifconfig/libifconfig_inet.c
new file mode 100644
index 0000000000000..59c74b11a57f0
--- /dev/null
+++ b/lib/libifconfig/libifconfig_inet.c
@@ -0,0 +1,98 @@
+/*
+ * Copyright (c) 1983, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+#include <sys/param.h>
+#include <sys/ioctl.h>
+
+#include <net/if.h>
+#include <netinet/in.h>
+
+#include <errno.h>
+#include <ifaddrs.h>
+#include <string.h>
+#include <strings.h>
+
+#include "libifconfig.h"
+#include "libifconfig_internal.h"
+
+static const struct sockaddr_in NULL_SIN;
+
+static int
+inet_prefixlen(const struct in_addr *addr)
+{
+ int x;
+
+ x = ffs(ntohl(addr->s_addr));
+ return (x == 0 ? 0 : 33 - x);
+}
+
+int
+ifconfig_inet_get_addrinfo(ifconfig_handle_t *h __unused,
+ const char *name __unused, struct ifaddrs *ifa,
+ struct ifconfig_inet_addr *addr)
+{
+ bzero(addr, sizeof(*addr));
+
+ /* Set the address */
+ if (ifa->ifa_addr == NULL) {
+ return (-1);
+ } else {
+ addr->sin = (struct sockaddr_in *)ifa->ifa_addr;
+ }
+
+ /* Set the destination address */
+ if (ifa->ifa_flags & IFF_POINTOPOINT) {
+ if (ifa->ifa_dstaddr) {
+ addr->dst = (struct sockaddr_in *)ifa->ifa_dstaddr;
+ } else {
+ addr->dst = &NULL_SIN;
+ }
+ }
+
+ /* Set the netmask and prefixlen */
+ if (ifa->ifa_netmask) {
+ addr->netmask = (struct sockaddr_in *)ifa->ifa_netmask;
+ } else {
+ addr->netmask = &NULL_SIN;
+ }
+ addr->prefixlen = inet_prefixlen(&addr->netmask->sin_addr);
+
+ /* Set the broadcast */
+ if (ifa->ifa_flags & IFF_BROADCAST) {
+ addr->broadcast = (struct sockaddr_in *)ifa->ifa_broadaddr;
+ }
+
+ /* Set the vhid */
+ if (ifa->ifa_data) {
+ addr->vhid = ((struct if_data *)ifa->ifa_data)->ifi_vhid;
+ }
+
+ return (0);
+}