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if.c
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/*
* Copyright (c) 2002-2008 Chris Cappuccio <[email protected]>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/tree.h>
#include <stdarg.h>
#include <stdio.h>
#include <ctype.h>
#include <fcntl.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <stdint.h>
#include <sys/socket.h>
#include <sys/param.h>
#include <sys/sockio.h>
#include <sys/ioctl.h>
#include <sys/un.h>
#include <net/if.h>
#include <net/if_types.h>
#include <net/if_dl.h>
#include <net/route.h>
#include <netinet/in.h>
#include <netinet/if_ether.h>
#include <netinet6/in6_var.h>
#include <netinet6/nd6.h>
#include <netmpls/mpls.h>
#include <netdb.h>
#include <net/if_vlan_var.h>
#include <net/if_pflow.h>
#include <net/if_media.h>
#include <net80211/ieee80211.h>
#include <net80211/ieee80211_ioctl.h>
#include <ifaddrs.h>
#include <arpa/inet.h>
#include <limits.h>
#include "ip.h"
#include "bridge.h"
#include "stringlist.h"
#include "externs.h"
#include "ctl.h"
char *iftype(int int_type);
const char *get_linkstate(int, int);
void show_int_status(char *, int, FILE *);
char *get_hwdaddr(char *ifname);
void pack_ifaliasreq(struct ifaliasreq *, ip_t *, struct in_addr *, char *);
void pack_in6aliasreq(struct in6_aliasreq *, ip_t *, struct in6_addr *, char *);
void ipv6ll_db_store(struct sockaddr_in6 *, struct sockaddr_in6 *, int, char *);
void printifhwfeatures(int, char *, FILE *);
void intipusage(const char *, const char *);
int run_ipcp(char *, int, int);
void show_vnet_parent(int, char *, FILE *);
void pwe3usage(void);
int show_vlan(int, int);
static struct ifmpwreq imrsave;
static char imrif[IFNAMSIZ];
static const struct {
char *name;
u_int8_t type;
} iftypes[] = {
/* OpenBSD-specific types */
{ "Packet Filter Logging", IFT_PFLOG },
{ "Packet Filter State Synchronization", IFT_PFSYNC },
{ "pflow Accounting Data", IFT_PFLOW },
{ "IPsec Encapsulation", IFT_ENC },
{ "Generic Tunnel", IFT_GIF },
{ "Common Address Redundancy Protocol", IFT_CARP },
{ "Bluetooth", IFT_BLUETOOTH },
{ "Mobile Broadband Interface", IFT_MBIM },
{ "Wireguard", IFT_WIREGUARD },
/* IANA-assigned types */
{ "Ethernet", IFT_ETHER },
{ "USB", IFT_USB },
{ "Transparent bridge", IFT_BRIDGE },
{ "HDLC", IFT_HDLC },
{ "IEEE 802.1Q", IFT_L2VLAN },
{ "Layer 3 Virtual LAN", IFT_L3IPVLAN },
{ "Virtual", IFT_PROPVIRTUAL },
{ "MPLS Tunnel Virtual", IFT_MPLSTUNNEL },
{ "MPLS Provider Edge", IFT_MPLS },
{ "IEEE 802.3ad Link Aggregate", IFT_IEEE8023ADLAG },
{ "PPP", IFT_PPP },
{ "Loopback", IFT_LOOP },
{ "Network Tunnel", IFT_TUNNEL },
{ "Coffee Pot", IFT_COFFEE },
{ "IEEE 802.11", IFT_IEEE80211 },
{ "Unspecified", IFT_OTHER },
};
void imr_init(char *ifname)
{
if (strcmp(ifname, imrif) == 0)
return;
strlcpy (imrif, ifname, IFNAMSIZ);
memset (&imrsave, 0, sizeof(imrsave));
}
const char *
get_linkstate(int mt, int link_state)
{
const struct if_status_description if_status_descriptions[] =
LINK_STATE_DESCRIPTIONS;
const struct if_status_description *p;
static char buf[8];
for (p = if_status_descriptions; p->ifs_string != NULL; p++) {
if (LINK_STATE_DESC_MATCH(p, mt, link_state))
return (p->ifs_string);
}
snprintf(buf, sizeof(buf), "[#%d]", link_state);
return buf;
}
void
show_int_status(char *ifname, int ifs, FILE *outfile)
{
struct ifreq ifr;
struct ifmediareq ifmr;
int flags;
struct if_data if_data;
struct sockaddr_dl *sdl = NULL;
const char *link_state_desc = NULL;
struct ifaddrs *ifap, *ifa;
uint64_t *media_list = NULL, seen_options = 0;
const char *ifm_type = NULL, *ifm_subtype = NULL;
char ifm_options_current[128];
char ifm_options_active[128];
ifm_options_current[0] = '\0';
ifm_options_active[0] = '\0';
memset(&ifr, 0, sizeof(ifr));
strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
flags = get_ifflags(ifname, ifs);
ifr.ifr_data = (caddr_t)&if_data;
if (ioctl(ifs, SIOCGIFDATA, (caddr_t)&ifr) < 0) {
printf("%% show_int_status: SIOCGIFDATA: %s\n",
strerror(errno));
return;
}
if (ioctl(ifs, SIOCGIFRDOMAIN, (caddr_t)&ifr) == -1) {
printf("%% show_int_status: SIOCGIFRDOMAIN: %s\n",
strerror(errno));
return;
}
memset(&ifmr, 0, sizeof(ifmr));
strlcpy(ifmr.ifm_name, ifname, sizeof(ifmr.ifm_name));
if (getifaddrs(&ifap) != 0) {
printf("%% show_int_status: getifaddrs: %s\n",
strerror(errno));
return;
}
for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
if (ifa->ifa_addr->sa_family == AF_LINK &&
(strcmp(ifname, ifa->ifa_name) == 0)) {
sdl = (struct sockaddr_dl *)ifa->ifa_addr;
link_state_desc = get_linkstate(sdl->sdl_type,
if_data.ifi_link_state);
break;
}
}
if (ioctl(ifs, SIOCGIFMEDIA, (caddr_t)&ifmr) != -1 &&
ifmr.ifm_count > 0) {
media_list = calloc(ifmr.ifm_count, sizeof(*media_list));
if (media_list == NULL) {
printf("%% show_int_status: calloc: %s\n",
strerror(errno));
return;
}
ifmr.ifm_ulist = media_list;
if (ioctl(ifs, SIOCGIFMEDIA, (caddr_t)&ifmr) == -1) {
printf("%% show_int_status: SIOCGIFMEDIA: %s\n",
strerror(errno));
return;
}
if (link_state_desc == NULL)
link_state_desc = get_ifm_linkstate_str(&ifmr);
}
/* Avoid displaying "unknown" for any non-physical interface. */
if (link_state_desc == NULL || strcmp(link_state_desc, "unknown") == 0)
link_state_desc = "-";
get_ifm_options_str(ifm_options_current, sizeof(ifm_options_current),
ifmr.ifm_current, &seen_options);
if (IFM_OPTIONS(ifmr.ifm_current) != IFM_OPTIONS(ifmr.ifm_active)) {
get_ifm_options_str(ifm_options_active,
sizeof(ifm_options_active), ifmr.ifm_active, &seen_options);
}
ifm_type = get_ifm_type_str(ifmr.ifm_active);
/* Avoid displaying "autoselect" for any non-physical interface. */
if (IFM_SUBTYPE(ifmr.ifm_active) != IFM_AUTO)
ifm_subtype = get_ifm_subtype_str(ifmr.ifm_active);
fprintf(outfile, " %-7s %-7s %-15s %10u %s%s%s%s%s%s%s\n", ifname,
(flags & IFF_UP) ? "up" : "down", link_state_desc,
ifr.ifr_rdomainid,
ifm_type ? ifm_type : "",
ifm_type ? " " : "",
ifm_subtype ? ifm_subtype : "",
ifm_subtype ? " " : "",
ifm_options_current,
ifm_options_current[0] != '\0' ? " " : "",
ifm_options_active[0] != '\0' ? ifm_options_active : "");
free(media_list);
}
int
show_int(int argc, char **argv, ...)
{
struct ifaddrs *ifap, *ifa;
struct if_nameindex *ifn_list, *ifnp;
struct ifreq ifr, ifrdesc;
struct if_data if_data;
struct sockaddr_in *sin = NULL, *sinmask = NULL, *sindest;
struct sockaddr_in6 *sin6 = NULL, *sin6mask = NULL, *sin6dest;
struct timeval tv;
FILE *outfile;
va_list ap;
short tmp;
int ifs, br, flags, days, hours, mins, pntd;
int ippntd = 0;
int physrt, physttl;
time_t c;
char *type, *lladdr;
char ifname[IFNAMSIZ];
char tmp_str[512], tmp_str2[512], ifdescr[IFDESCRSIZE];
memset(ifname, 0, sizeof(ifname));
va_start(ap, argv);
outfile = va_arg(ap, FILE *);
va_end(ap);
if (argc == 4) {
/*
* Allow "interface-name interface-number" as some
* network switches do: interface em 0
*/
const char *errstr;
size_t len2 = strlen(argv[2]);
strlcpy(ifname, argv[2], sizeof(ifname));
strtonum(argv[3], 0, INT_MAX, &errstr);
if (errstr) {
printf("%% interface unit %s is %s\n", argv[3], errstr);
return(1);
}
if (len2 > 0 && isdigit((unsigned char)(argv[2][len2 - 1]))) {
printf("%% interface unit %s is redundant\n", argv[3]);
return(1);
}
strlcat(ifname, argv[3], sizeof(ifname));
printf("%% Interface name is %s not \"%s %s\"\n",
ifname, argv[2], argv[3]);
} if (argc == 3)
strlcpy(ifname, argv[2], sizeof(ifname));
if ((ifs = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
printf("%% show_int: %s\n", strerror(errno));
return(1);
}
/*
* Show all interfaces when no ifname specified.
*/
if (ifname[0] == '\0') {
if ((ifn_list = if_nameindex()) == NULL) {
printf("%% show_int: if_nameindex failed\n");
close(ifs);
return 0;
}
for (ifnp = ifn_list; ifnp->if_name != NULL; ifnp++) {
char *args[] = { NULL, NULL, ifnp->if_name };
show_int(3, args, outfile);
}
if_freenameindex(ifn_list);
close(ifs);
return(0);
} else if (isprefix(ifname, "status")) {
if ((ifn_list = if_nameindex()) == NULL) {
printf("%% show_int: if_nameindex failed\n");
close(ifs);
return 0;
}
fputs("% Name Status Link Routing-Domain Media\n",
outfile);
for (ifnp = ifn_list; ifnp->if_name != NULL; ifnp++)
show_int_status(ifnp->if_name, ifs, outfile);
if_freenameindex(ifn_list);
close(ifs);
return(0);
} else if (!is_valid_ifname(ifname)) {
printf("%% interface %s not found\n", ifname);
close(ifs);
return(1);
}
if (!(br = is_bridge(ifs, (char *)ifname)))
br = 0;
strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
/*
* Show up/down status and last change time
*/
flags = get_ifflags(ifname, ifs);
ifr.ifr_data = (caddr_t)&if_data;
if (ioctl(ifs, SIOCGIFDATA, (caddr_t)&ifr) < 0) {
printf("%% show_int: SIOCGIFDATA: %s\n", strerror(errno));
close(ifs);
return(1);
}
fprintf(outfile, "%% %s", ifname);
/* description */
memset(&ifrdesc, 0, sizeof(ifrdesc));
strlcpy(ifrdesc.ifr_name, ifname, sizeof(ifrdesc.ifr_name));
ifrdesc.ifr_data = (caddr_t)&ifdescr;
if (ioctl(ifs, SIOCGIFDESCR, &ifrdesc) == 0 &&
strlen(ifrdesc.ifr_data))
fprintf(outfile, " (%s)", ifrdesc.ifr_data);
fputc('\n', outfile);
fprintf(outfile, " %s is %s", br ? "Bridge" : "Interface",
flags & IFF_UP ? "up" : "down");
if (if_data.ifi_lastchange.tv_sec) {
gettimeofday(&tv, (struct timezone *)0);
c = difftime(tv.tv_sec, if_data.ifi_lastchange.tv_sec);
days = c / (24 * 60 * 60);
c %= (24 * 60 * 60);
hours = c / (60 * 60);
c %= (60 * 60);
mins = c / 60;
c %= 60;
fprintf(outfile, " (last change ");
if (days)
fprintf(outfile, "%id ", days);
fprintf(outfile, "%02i:%02i:%02i)", hours, mins, (int)c);
}
fprintf(outfile, ", protocol is %s\n",
flags & IFF_RUNNING ? "up" : "down");
type = iftype(if_data.ifi_type);
fprintf(outfile, " Interface type %s", type);
if (if_data.ifi_type != IFT_WIREGUARD) {
if (flags & IFF_BROADCAST)
fprintf(outfile, " (Broadcast)");
else if (flags & IFF_POINTOPOINT)
fprintf(outfile, " (PointToPoint)");
}
if ((lladdr = get_hwdaddr(ifname)) != NULL)
fprintf(outfile, ", hardware address %s", lladdr);
fputc('\n', outfile);
show_wg(ifs, ifname, outfile);
show_umb(ifs, ifname, outfile);
show_trunk(ifs, ifname, outfile);
if (media_status(ifs, ifname, " Media type ", outfile))
return(1);
/*
* Print interface IP address, and broadcast or
* destination if available. But, don't print broadcast
* if it is what we would expect given the ip and netmask!
*/
if (getifaddrs(&ifap) != 0) {
printf("%% show_int: getifaddrs failed: %s\n",
strerror(errno));
return(1);
}
/*
* Cycle through getifaddrs for interfaces with our
* desired name that sport AF_INET, print the IP and
* related information.
*/
for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
if (ifa->ifa_addr == NULL)
continue;
if (strncmp(ifname, ifa->ifa_name, IFNAMSIZ))
continue;
switch (ifa->ifa_addr->sa_family) {
case AF_INET:
sin = (struct sockaddr_in *)ifa->ifa_addr;
sinmask = (struct sockaddr_in *)ifa->ifa_netmask;
if (sin->sin_addr.s_addr == INADDR_ANY)
continue;
break;
case AF_INET6:
sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
sin6mask = (struct sockaddr_in6 *)ifa->ifa_netmask;
if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
continue;
in6_fillscopeid(sin6);
break;
default:
continue;
}
if (!ippntd)
fprintf(outfile, " Internet address");
fprintf(outfile, "%s %s", ippntd ? "," : "",
ifa->ifa_addr->sa_family == AF_INET ?
netname4(sin->sin_addr.s_addr, sinmask) :
netname6(sin6, sin6mask));
ippntd = 1;
switch (ifa->ifa_addr->sa_family) {
case AF_INET:
if (flags & IFF_POINTOPOINT) {
sindest = (struct sockaddr_in *)
ifa->ifa_dstaddr;
fprintf(outfile, " (Destination %s)",
routename4(sindest->sin_addr.s_addr));
} else if (flags & IFF_BROADCAST) {
sindest = (struct sockaddr_in *)
ifa->ifa_broadaddr;
/*
* no reason to show the broadcast addr
* if it is standard (this should always
* be true unless someone has messed up their
* network or they are playing around...)
*/
if (ntohl(sindest->sin_addr.s_addr) !=
in4_brdaddr(sin->sin_addr.s_addr,
sinmask->sin_addr.s_addr) &&
ntohl(sindest->sin_addr.s_addr) !=
INADDR_ANY)
fprintf(outfile, " (Broadcast %s)",
inet_ntoa(sindest->sin_addr));
}
break;
case AF_INET6:
if (flags & IFF_POINTOPOINT) {
sin6dest = (struct sockaddr_in6 *)
ifa->ifa_dstaddr;
in6_fillscopeid(sin6dest);
fprintf(outfile, " (Destination %s)",
routename6(sin6dest));
}
break;
default:
fprintf(outfile, " unknown");
break;
}
}
if (ippntd) {
fputc('\n', outfile);
}
freeifaddrs(ifap);
if (!br) {
if (phys_status(ifs, ifname, tmp_str, tmp_str2,
sizeof(tmp_str), sizeof(tmp_str2)) > 0) {
fprintf(outfile, " Tunnel source %s destination %s",
tmp_str, tmp_str2);
if (((physrt = get_physrtable(ifs, ifname)) != 0))
fprintf(outfile, " destination rdomain %i",
physrt);
if (((physttl = get_physttl(ifs, ifname)) != 0))
fprintf(outfile, " ttl %i", physttl);
fputc('\n', outfile);
}
carp_state(ifs, ifname, outfile);
fputc(' ', outfile);
show_vnet_parent(ifs, ifname, outfile);
if (ioctl(ifs, SIOCGIFRDOMAIN, (caddr_t)&ifr) != -1)
fprintf(outfile, " rdomain %d,", ifr.ifr_rdomainid);
/*
* Display MTU, line rate
*/
fprintf(outfile, " MTU %u bytes", if_data.ifi_mtu);
if (ioctl(ifs, SIOCGIFHARDMTU, (caddr_t)&ifr) != -1) {
if (ifr.ifr_hardmtu)
fprintf(outfile, " (hardmtu %u)",
ifr.ifr_hardmtu);
}
if (if_data.ifi_baudrate)
fprintf(outfile, ", Line Rate %qu %s",
MBPS(if_data.ifi_baudrate) ?
MBPS(if_data.ifi_baudrate) :
if_data.ifi_baudrate / 1000,
MBPS(if_data.ifi_baudrate) ? "Mbps" : "Kbps");
fputc('\n', outfile);
}
if (get_nwinfo(ifname, tmp_str, sizeof(tmp_str), NWID) != 0) {
fprintf(outfile, " SSID %s", tmp_str);
if(get_nwinfo(ifname, tmp_str, sizeof(tmp_str), NWKEY) != 0)
fprintf(outfile, ", key %s", tmp_str);
if ((get_nwinfo(ifname, tmp_str, sizeof(tmp_str),
POWERSAVE)) != 0)
fprintf(outfile, ", powersaving (%s ms)\n", tmp_str);
fputc('\n', outfile);
}
/*
* Display remaining info from if_data structure
*/
fprintf(outfile, " %qu packets input, %qu bytes, %qu errors, %qu drops\n",
if_data.ifi_ipackets, if_data.ifi_ibytes, if_data.ifi_ierrors,
if_data.ifi_iqdrops);
fprintf(outfile, " %qu packets output, %qu bytes, %qu errors, "
"%qu unsupported\n",
if_data.ifi_opackets, if_data.ifi_obytes, if_data.ifi_oerrors,
if_data.ifi_noproto);
if (if_data.ifi_ibytes && if_data.ifi_ipackets &&
(if_data.ifi_ibytes / if_data.ifi_ipackets) >= ETHERMIN) {
/* < ETHERMIN means byte counter probably rolled over */
fprintf(outfile, " %qu input", if_data.ifi_ibytes /
if_data.ifi_ipackets);
pntd = 1;
} else
pntd = 0;
if (if_data.ifi_obytes && if_data.ifi_opackets &&
(if_data.ifi_obytes / if_data.ifi_opackets) >= ETHERMIN) {
/* < ETHERMIN means byte counter probably rolled over */
fprintf(outfile, "%s%qu output", pntd ? ", " : " ",
if_data.ifi_obytes / if_data.ifi_opackets);
pntd = 1;
}
if (pntd)
fprintf(outfile, " (average bytes/packet)\n");
switch(if_data.ifi_type) {
/*
* These appear to be the only interface types to increase collision
* count in the OpenBSD 3.2 kernel.
*/
case IFT_ETHER:
case IFT_SLIP:
case IFT_PROPVIRTUAL:
case IFT_IEEE80211:
fprintf(outfile, " %qu collisions\n", if_data.ifi_collisions);
break;
default:
break;
}
if(verbose) {
if (flags) {
fprintf(outfile, " Flags:\n ");
bprintf(outfile, flags, ifnetflags);
fputc('\n', outfile);
}
printifhwfeatures(ifs, ifname, outfile);
if (br) {
if ((tmp = bridge_list(ifs, ifname, " ", tmp_str,
sizeof(tmp_str), SHOW_STPSTATE))) {
fprintf(outfile, " STP member state%s:\n",
tmp > 1 ? "s" : "");
fprintf(outfile, "%s", tmp_str);
}
bridge_addrs(ifs, ifname, " ", " ", outfile);
}
media_supported(ifs, ifname, " ", " ", outfile);
}
close(ifs);
return(0);
}
int
show_autoconf(int argc, char **argv, ...)
{
struct if_nameindex *ifn_list, *ifnp;
char *ifname = NULL;
char outpath[PATH_MAX];
int ifs = -1, fd = -1, nullfd = -1, ifxflags;
int have_output = 0;
if (argc == 3) {
ifname = argv[2];
if (!is_valid_ifname(ifname)) {
printf("%% interface %s not found\n", ifname);
return (1);
}
}
nullfd = open("/dev/null", O_WRONLY | O_NOFOLLOW | O_CLOEXEC);
if (nullfd == -1) {
printf("%% open /dev/null: %s\n", strerror(errno));
return (1);
}
if ((ifs = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
printf("%% socket: %s\n", strerror(errno));
close(nullfd);
return (1);
}
if ((ifn_list = if_nameindex()) == NULL) {
printf("%% if_nameindex: %s\n", strerror(errno));
close(nullfd);
close(ifs);
return (1);
}
strlcpy(outpath, "/tmp/nsh-XXXXXX", sizeof(outpath));
fd = mkstemp(outpath);
if (fd == -1) {
printf("%% mkstemp: %s\n", strerror(errno));
close(nullfd);
close(ifs);
if_freenameindex(ifn_list);
return (1);
}
for (ifnp = ifn_list; ifnp->if_name != NULL; ifnp++) {
if (ifname && strcmp(ifname, ifnp->if_name) != 0)
continue;
ifxflags = get_ifxflags(ifnp->if_name, ifs);
if ((ifxflags & IFXF_AUTOCONF4) && dhcpleased_is_running()) {
char *args[] = { DHCPLEASECTL, "-l",
ifnp->if_name, NULL };
cmdargs_output(DHCPLEASECTL, args, fd, nullfd);
have_output = 1;
}
if ((ifxflags & IFXF_AUTOCONF6) && slaacd_is_running()) {
char *args[] = { SLAACCTL, "show", "interface",
ifnp->if_name, NULL };
cmdargs_output(SLAACCTL, args, fd, nullfd);
have_output = 1;
}
}
if (have_output)
more(outpath);
unlink(outpath);
if_freenameindex(ifn_list);
close(nullfd);
close(fd);
close(ifs);
return (0);
}
struct ip_tree_entry {
RB_ENTRY(ip_tree_entry) entry;
u_short family; /* AF_INET | AF_INET6 */
const char *ifname;
int rdomain;
int flags; /* custom IPv4 address flags */
#define NSH_IP_FLAG_DHCP 0x01
#define NSH_IP_FLAG_IPCP 0x02
#define NSH_IP_FLAG_STATIC 0x04
int flags6; /* IN6_IFF_ flags */
union {
struct in_addr in;
struct in6_addr in6;
} addr;
};
static inline int
ip_tree_cmp(const struct ip_tree_entry *e1, const struct ip_tree_entry *e2)
{
int cmp;
if (e1->family < e2->family)
return -1;
if (e1->family > e2->family)
return 1;
if (e1->family == AF_INET) {
cmp = memcmp(&e1->addr.in, &e2->addr.in,
sizeof(struct in_addr));
} else {
cmp = memcmp(&e1->addr.in6, &e2->addr.in6,
sizeof(struct in6_addr));
}
if (cmp == 0) {
if (e1->rdomain < e2->rdomain)
return -1;
if (e1->rdomain > e2->rdomain)
return 1;
}
return cmp;
}
RB_HEAD(ip_tree, ip_tree_entry);
RB_PROTOTYPE(ip_tree, ip_tree_entry, entry, ip_tree_cmp);
RB_GENERATE(ip_tree, ip_tree_entry, entry, ip_tree_cmp);
int
show_ip(int argc, char **argv, ...)
{
struct ifaddrs *ifap, *ifa;
struct sockaddr_in *sin = NULL, *sinmask = NULL;
struct sockaddr_in6 *sin6 = NULL;
struct in6_ifreq ifr6;
int af = -1, s = -1;
char buf[INET6_ADDRSTRLEN];
char maskbuf[INET_ADDRSTRLEN];
char flagsbuf[64];
struct ip_tree tree;
struct ip_tree_entry *e = NULL;
int max_addr_strlen = 0;
size_t addr_strlen;
struct ifreq ifr;
RB_INIT(&tree);
s = socket(PF_INET6, SOCK_DGRAM, 0);
if (s < 0) {
printf("%% show_ip: socket: %s\n", strerror(errno));
return (0);
}
if (getifaddrs(&ifap) != 0) {
printf("%% show_ip: getifaddrs: %s\n", strerror(errno));
close(s);
return (0);
}
if (strcmp(argv[1], "inet") == 0)
af = AF_INET;
else if (strcmp(argv[1], "inet6") == 0)
af = AF_INET6;
/* Collect IPs */
for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
if (ifa->ifa_addr->sa_family != AF_INET &&
ifa->ifa_addr->sa_family != AF_INET6)
continue;
if (af != -1 && ifa->ifa_addr->sa_family != af)
continue;
e = calloc(1, sizeof(*e));
if (e == NULL) {
printf("%% show_ip: calloc: %s\n", strerror(errno));
goto done;
}
e->family = ifa->ifa_addr->sa_family;
e->ifname = ifa->ifa_name;
memset(&ifr, 0, sizeof(ifr));
strlcpy(ifr.ifr_name, ifa->ifa_name, sizeof(ifr.ifr_name));
if (ioctl(s, SIOCGIFRDOMAIN, (caddr_t)&ifr) != -1)
e->rdomain = ifr.ifr_rdomainid;;
if (ifa->ifa_addr->sa_family == AF_INET) {
sin = (struct sockaddr_in *)ifa->ifa_addr;
sinmask = (struct sockaddr_in *)ifa->ifa_netmask;
memcpy(&e->addr.in, &sin->sin_addr, sizeof(e->addr.in));
if (inet_ntop(e->family, &e->addr.in,
buf, sizeof(buf)) == NULL) {
printf("%% inet_ntop: %s\n", strerror(errno));
goto done;
}
if (inet_ntop(e->family, &sinmask->sin_addr,
maskbuf, sizeof(maskbuf)) == NULL) {
printf("%% inet_ntop: %s\n", strerror(errno));
goto done;
}
if (dhcpleased_has_address(ifa->ifa_name, buf, maskbuf))
e->flags |= NSH_IP_FLAG_DHCP;
else if (is_pppoe(ifa->ifa_name, s) &&
pppoe_get_ipaddrmode(ifa->ifa_name) ==
NSH_PPPOE_IPADDR_IPCP)
e->flags |= NSH_IP_FLAG_IPCP;
else
e->flags |= NSH_IP_FLAG_STATIC;
} else {
sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
memcpy(&e->addr.in6, &sin6->sin6_addr,
sizeof(e->addr.in6));
if (inet_ntop(e->family, &e->addr.in6,
buf, sizeof(buf)) == NULL) {
printf("%% inet_ntop: %s\n", strerror(errno));
goto done;
}
memset(&ifr6, 0, sizeof(ifr6));
strlcpy(ifr6.ifr_name, e->ifname, sizeof(ifr6.ifr_name));
memcpy(&ifr6.ifr_addr, sin6, sizeof(ifr6.ifr_addr));
if (ioctl(s, SIOCGIFAFLAG_IN6, (caddr_t)&ifr6) == 0)
e->flags6 = ifr6.ifr_ifru.ifru_flags6;
}
RB_INSERT(ip_tree, &tree, e);
e = NULL;
addr_strlen = strlen(buf);
if (max_addr_strlen < addr_strlen)
max_addr_strlen = addr_strlen;
}
/* Show IPs */
printf("%-*s Interface RDomain Type\n",
max_addr_strlen, "Address");
RB_FOREACH(e, ip_tree, &tree) {
void *addr;
flagsbuf[0] = '\0';
if (e->family == AF_INET) {
addr = &e->addr.in;
if (e->flags & NSH_IP_FLAG_DHCP)
strlcat(flagsbuf, " dhcp", sizeof(flagsbuf));
if (e->flags & NSH_IP_FLAG_IPCP) {
strlcat(flagsbuf, " autoconf",
sizeof(flagsbuf));
}
if (e->flags & NSH_IP_FLAG_STATIC)
strlcat(flagsbuf, " static", sizeof(flagsbuf));
} else {
addr = &e->addr.in6;
if (e->flags6 & IN6_IFF_AUTOCONF) {
strlcat(flagsbuf, " autoconf",
sizeof(flagsbuf));
}
if (e->flags6 & IN6_IFF_TEMPORARY) {
strlcat(flagsbuf, " temporary",
sizeof(flagsbuf));
}
if (IN6_IS_ADDR_LINKLOCAL(&e->addr.in6)) {
strlcat(flagsbuf, " link-local",
sizeof(flagsbuf));
} else if ((e->flags6 & (IN6_IFF_AUTOCONF |
IN6_IFF_TEMPORARY)) == 0) {
strlcat(flagsbuf, " static",
sizeof(flagsbuf));
}
}
if (inet_ntop(e->family, addr, buf, sizeof(buf)) == NULL) {
printf("%% inet_ntop: %s\n", strerror(errno));
continue;
}
printf("%-*s %-9s %8d %s\n", max_addr_strlen, buf,
e->ifname, e->rdomain, flagsbuf);
}
done:
free(e);
while ((e = RB_MIN(ip_tree, &tree))) {
RB_REMOVE(ip_tree, &tree, e);
free(e);
}
freeifaddrs(ifap);
close(s);
return (0);
}
void
show_vnet_parent(int ifs, char *ifname, FILE *outfile)
{
struct if_parent ifp;
struct ifreq ifr;
bzero(&ifr, sizeof(ifr));
strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
if (ioctl(ifs, SIOCGVNETID, (caddr_t)&ifr) != -1)
fprintf(outfile, " vnetid %llu,", ifr.ifr_vnetid);
bzero(&ifp, sizeof(ifp));
strlcpy(ifp.ifp_name, ifname, sizeof(ifp.ifp_name));
if (ioctl(ifs, SIOCGIFPARENT, (caddr_t)&ifp) != -1)
fprintf(outfile, " parent %s,", ifp.ifp_parent);
}
/* lifted right from ifconfig.c */
#define HWFEATURESBITS \
"\024\1CSUM_IPv4\2CSUM_TCPv4\3CSUM_UDPv4" \
"\5VLAN_MTU\6VLAN_HWTAGGING\10CSUM_TCPv6" \
"\11CSUM_UDPv6\20WOL"
/* lifted right from ifconfig.c */
void
printifhwfeatures(int ifs, char *ifname, FILE *outfile)
{
struct ifreq ifr;
struct if_data ifrdat;
bzero(&ifrdat, sizeof(ifrdat));
ifr.ifr_data = (caddr_t)&ifrdat;
strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
if (ioctl(ifs, SIOCGIFDATA, (caddr_t)&ifr) == -1) {
fprintf(outfile, "%% printifhwfeatures: SIOCGIFDATA: %s\n",
strerror(errno));
return;
}
fprintf(outfile, " Hardware features:\n ");
bprintf(outfile, (u_int)ifrdat.ifi_capabilities, HWFEATURESBITS);
fputc('\n', outfile);
}
u_int32_t
in4_netaddr(u_int32_t addr, u_int32_t mask)
{
u_int32_t net;
net = ntohl(addr) & ntohl(mask);
return (net);
}
u_int32_t
in4_brdaddr(u_int32_t addr, u_int32_t mask)
{
u_int32_t net, bcast;
net = in4_netaddr(addr, mask);
bcast = net | ~ntohl(mask);
return(bcast);
}
char *
get_hwdaddr(char *ifname)
{
int i, found = 0;
char *val = NULL;
struct ifaddrs *ifap, *ifa;
struct ether_addr *ea;
struct sockaddr_dl *sdl = NULL;
if (getifaddrs(&ifap) != 0) {
printf("%% get_hwdaddr: getifaddrs: %s\n", strerror(errno));
return(NULL);
}
for (ifa = ifap; ifa; ifa = ifa->ifa_next)
if (ifa->ifa_addr->sa_family == AF_LINK &&
(strcmp(ifname, ifa->ifa_name) == 0)) {
sdl = (struct sockaddr_dl *)ifa->ifa_addr;
found++;
break;
}
if (found && sdl && sdl->sdl_alen)
switch(sdl->sdl_type) {
case IFT_ETHER:
case IFT_IEEE80211:
ea = (struct ether_addr *)LLADDR(sdl);
val = ether_ntoa(ea);
for (found = 0, i = 0; i < ETHER_ADDR_LEN; i++)
if (ea->ether_addr_octet[i] == 0)
found++;
if (found == ETHER_ADDR_LEN)
val = NULL;
break;
default:
val = NULL;
break;
}
freeifaddrs(ifap);
return(val);
}
char *
iftype(int int_type)
{
u_int i;
for (i = 0; i < nitems(iftypes); i++)
if (int_type == iftypes[i].type)
return(iftypes[i].name);