diff options
Diffstat (limited to 'lib/libifconfig/libifconfig_inet.c')
-rw-r--r-- | lib/libifconfig/libifconfig_inet.c | 98 |
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); +} |