/*
* ipaddress.c "ip address".
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <syslog.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/errno.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <string.h>
#include <fnmatch.h>
#include <linux/netdevice.h>
#include <linux/if_arp.h>
#include <linux/sockios.h>
#include "rt_names.h"
#include "utils.h"
#include "ll_map.h"
#include "ip_common.h"
#define MAX_ROUNDS 10
static struct
{
int ifindex;
int family;
int oneline;
int showqueue;
inet_prefix pfx;
int scope, scopemask;
int flags, flagmask;
int up;
char *label;
int flushed;
char *flushb;
int flushp;
int flushe;
} filter;
static int do_link;
static void usage(void) __attribute__((noreturn));
static void usage(void)
{
if (do_link) {
iplink_usage();
}
fprintf(stderr, "Usage: ip addr {add|change|replace} IFADDR dev STRING [ LIFETIME ]\n");
fprintf(stderr, " [ CONFFLAG-LIST ]\n");
fprintf(stderr, " ip addr del IFADDR dev STRING\n");
fprintf(stderr, " ip addr {show|flush} [ dev STRING ] [ scope SCOPE-ID ]\n");
fprintf(stderr, " [ to PREFIX ] [ FLAG-LIST ] [ label PATTERN ]\n");
fprintf(stderr, "IFADDR := PREFIX | ADDR peer PREFIX\n");
fprintf(stderr, " [ broadcast ADDR ] [ anycast ADDR ]\n");
fprintf(stderr, " [ label STRING ] [ scope SCOPE-ID ]\n");
fprintf(stderr, "SCOPE-ID := [ host | link | global | NUMBER ]\n");
fprintf(stderr, "FLAG-LIST := [ FLAG-LIST ] FLAG\n");
fprintf(stderr, "FLAG := [ permanent | dynamic | secondary | primary |\n");
fprintf(stderr, " tentative | deprecated | dadfailed | temporary |\n");
fprintf(stderr, " CONFFLAG-LIST ]\n");
fprintf(stderr, "CONFFLAG-LIST := [ CONFFLAG-LIST ] CONFFLAG\n");
fprintf(stderr, "CONFFLAG := [ home | nodad ]\n");
fprintf(stderr, "LIFETIME := [ valid_lft LFT ] [ preferred_lft LFT ]\n");
fprintf(stderr, "LFT := forever | SECONDS\n");
exit(-1);
}
void print_link_flags(FILE *fp, unsigned flags, unsigned mdown)
{
fprintf(fp, "<");
if (flags & IFF_UP && !(flags & IFF_RUNNING))
fprintf(fp, "NO-CARRIER%s", flags ? "," : "");
flags &= ~IFF_RUNNING;
#define _PF(f) if (flags&IFF_##f) { \
flags &= ~IFF_##f ; \
fprintf(fp, #f "%s", flags ? "," : ""); }
_PF(LOOPBACK);
_PF(BROADCAST);
_PF(POINTOPOINT);
_PF(MULTICAST);
_PF(NOARP);
_PF(ALLMULTI);
_PF(PROMISC);
_PF(MASTER);
_PF(SLAVE);
_PF(DEBUG);
_PF(DYNAMIC);
_PF(AUTOMEDIA);
_PF(PORTSEL);
_PF(NOTRAILERS);
_PF(UP);
_PF(LOWER_UP);
_PF(DORMANT);
_PF(ECHO);
#undef _PF
if (flags)
fprintf(fp, "%x", flags);
if (mdown)
fprintf(fp, ",M-DOWN");
fprintf(fp, "> ");
}
static const char *oper_states[] = {
"UNKNOWN", "NOTPRESENT", "DOWN", "LOWERLAYERDOWN",
"TESTING", "DORMANT", "UP"
};
static void print_operstate(FILE *f, __u8 state)
{
if (state >= sizeof(oper_states)/sizeof(oper_states[0]))
fprintf(f, "state %#x ", state);
else
fprintf(f, "state %s ", oper_states[state]);
}
static void print_queuelen(FILE *f, const char *name)
{
struct ifreq ifr;
int s;
s = socket(AF_INET, SOCK_STREAM, 0);
if (s < 0)
return;
memset(&ifr, 0, sizeof(ifr));
strcpy(ifr.ifr_name, name);
if (ioctl(s, SIOCGIFTXQLEN, &ifr) < 0) {
fprintf(f, "ioctl(SIOCGIFXQLEN) failed: %s\n", strerror(errno));
close(s);
return;
}
close(s);
if (ifr.ifr_qlen)
fprintf(f, "qlen %d", ifr.ifr_qlen);
}
static void print_linktype(FILE *fp, struct rtattr *tb)
{
struct rtattr *linkinfo[IFLA_INFO_MAX+1];
struct link_util *lu;
char *kind;
parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, tb);
if (!linkinfo[IFLA_INFO_KIND])
return;
kind = RTA_DATA(linkinfo[IFLA_INFO_KIND]);
fprintf(fp, "%s", _SL_);
fprintf(fp, " %s ", kind);
lu = get_link_kind(kind);
if (!lu || !lu->print_opt)
return;
if (1) {
struct rtattr *attr[lu->maxattr+1], **data = NULL;
if (linkinfo[IFLA_INFO_DATA]) {
parse_rtattr_nested(attr, lu->maxattr,
linkinfo[IFLA_INFO_DATA]);
data = attr;
}
lu->print_opt(lu, fp, data);
if (linkinfo[IFLA_INFO_XSTATS] && show_stats &&
lu->print_xstats)
lu->print_xstats(lu, fp, linkinfo[IFLA_INFO_XSTATS]);
}
}
static void print_vfinfo(FILE *fp, struct rtattr *vfinfo)
{
struct ifla_vf_mac *vf_mac;
struct ifla_vf_vlan *vf_vlan;
struct ifla_vf_tx_rate *vf_tx_rate;
struct rtattr *vf[IFLA_VF_MAX+1];
SPRINT_BUF(b1);
if (vfinfo->rta_type != IFLA_VF_INFO) {
fprintf(stderr, "BUG: rta type is %d\n", vfinfo->rta_type);
return;
}
parse_rtattr_nested(vf, IFLA_VF_MAX, vfinfo);
vf_mac = RTA_DATA(vf[IFLA_VF_MAC]);
vf_vlan = RTA_DATA(vf[IFLA_VF_VLAN]);
vf_tx_rate = RTA_DATA(vf[IFLA_VF_TX_RATE]);
fprintf(fp, "\n vf %d MAC %s", vf_mac->vf,
ll_addr_n2a((unsigned char *)&vf_mac->mac,
ETH_ALEN, 0, b1, sizeof(b1)));
if (vf_vlan->vlan)
fprintf(fp, ", vlan %d", vf_vlan->vlan);
if (vf_vlan->qos)
fprintf(fp, ", qos %d", vf_vlan->qos);
if (vf_tx_rate->rate)
fprintf(fp, ", tx rate %d (Mbps)", vf_tx_rate->rate);
}
int print_linkinfo(const struct sockaddr_nl *who,
struct nlmsghdr *n, void *arg)
{
FILE *fp = (FILE*)arg;
struct ifinfomsg *ifi = NLMSG_DATA(n);
struct rtattr * tb[IFLA_MAX+1];
int len = n->nlmsg_len;
unsigned m_flag = 0;
if (n->nlmsg_type != RTM_NEWLINK && n->nlmsg_type != RTM_DELLINK)
return 0;
len -= NLMSG_LENGTH(sizeof(*ifi));
if (len < 0)
return -1;
if (filter.ifindex && ifi->ifi_index != filter.ifindex)
return 0;
if (filter.up && !(ifi->ifi_flags&IFF_UP))
return 0;
parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len);
if (tb[IFLA_IFNAME] == NULL) {
fprintf(stderr, "BUG: device with ifindex %d has nil ifname\n", ifi->ifi_index);
}
if (filter.label &&
(!filter.family || filter.family == AF_PACKET) &&
fnmatch(filter.label, RTA_DATA(tb[IFLA_IFNAME]), 0))
return 0;
if (n->nlmsg_type == RTM_DELLINK)
fprintf(fp, "Deleted ");
fprintf(fp, "%d: %s", ifi->ifi_index,
tb[IFLA_IFNAME] ? (char*)RTA_DATA(tb[IFLA_IFNAME]) : "<nil>");
if (tb[IFLA_LINK]) {
SPRINT_BUF(b1);
int iflink = *(int*)RTA_DATA(tb[IFLA_LINK]);
if (iflink == 0)
fprintf(fp, "@NONE: ");
else {
fprintf(fp, "@%s: ", ll_idx_n2a(iflink, b1));
m_flag = ll_index_to_flags(iflink);
m_flag = !(m_flag & IFF_UP);
}
} else {
fprintf(fp, ": ");
}
print_link_flags(fp, ifi->ifi_flags, m_flag);
if (tb[IFLA_MTU])
fprintf(fp, "mtu %u ", *(int*)RTA_DATA(tb[IFLA_MTU]));
if (tb[IFLA_QDISC])
fprintf(fp, "qdisc %s ", (char*)RTA_DATA(tb[IFLA_QDISC]));
#ifdef IFLA_MASTER
if (tb[IFLA_MASTER]) {
SPRINT_BUF(b1);
fprintf(fp, "master %s ", ll_idx_n2a(*(int*)RTA_DATA(tb[IFLA_MASTER]), b1));
}
#endif
if (tb[IFLA_OPERSTATE])
print_operstate(fp, *(__u8 *)RTA_DATA(tb[IFLA_OPERSTATE]));
if (filter.showqueue)
print_queuelen(fp, (char*)RTA_DATA(tb[IFLA_IFNAME]));
if (!filter.family || filter.family == AF_PACKET) {
SPRINT_BUF(b1);
fprintf(fp, "%s", _SL_);
fprintf(fp, " link/%s ", ll_type_n2a(ifi->ifi_type, b1, sizeof(b1)));
if (tb[IFLA_ADDRESS]) {
fprintf(fp, "%s", ll_addr_n2a(RTA_DATA(tb[IFLA_ADDRESS]),
RTA_PAYLOAD(tb[IFLA_ADDRESS]),
ifi->ifi_type,
b1, sizeof(b1)));
}
if (tb[IFLA_BROADCAST]) {
if (ifi->ifi_flags&IFF_POINTOPOINT)
fprintf(fp, " peer ");
else
fprintf(fp, " brd ");
fprintf(fp, "%s", ll_addr_n2a(RTA_DATA(tb[IFLA_BROADCAST]),
RTA_PAYLOAD(tb[IFLA_BROADCAST]),
ifi->ifi_type,
b1, sizeof(b1)));
}
}
if (do_link && tb[IFLA_LINKINFO] && show_details)
print_linktype(fp, tb[IFLA_LINKINFO]);
if (do_link && tb[IFLA_IFALIAS])
fprintf(fp,"\n alias %s",
(const char *) RTA_DATA(tb[IFLA_IFALIAS]));
if (do_link && tb[IFLA_STATS64] && show_stats) {
struct rtnl_link_stats64 slocal;
struct rtnl_link_stats64 *s = RTA_DATA(tb[IFLA_STATS64]);
if (((unsigned long)s) & (sizeof(unsigned long)-1)) {
memcpy(&slocal, s, sizeof(slocal));
s = &slocal;
}
fprintf(fp, "%s", _SL_);
fprintf(fp, " RX: bytes packets errors dropped overrun mcast %s%s",
s->rx_compressed ? "compressed" : "", _SL_);
fprintf(fp, " %-10llu %-8llu %-7llu %-7llu %-7llu %-7llu",
(unsigned long long)s->rx_bytes,
(unsigned long long)s->rx_packets,
(unsigned long long)s->rx_errors,
(unsigned long long)s->rx_dropped,
(unsigned long long)s->rx_over_errors,
(unsigned long long)s->multicast);
if (s->rx_compressed)
fprintf(fp, " %-7llu",
(unsigned long long)s->rx_compressed);
if (show_stats > 1) {
fprintf(fp, "%s", _SL_);
fprintf(fp, " RX errors: length crc frame fifo missed%s", _SL_);
fprintf(fp, " %-7llu %-7llu %-7llu %-7llu %-7llu",
(unsigned long long)s->rx_length_errors,
(unsigned long long)s->rx_crc_errors,
(unsigned long long)s->rx_frame_errors,
(unsigned long long)s->rx_fifo_errors,
(unsigned long long)s->rx_missed_errors);
}
fprintf(fp, "%s", _SL_);
fprintf(fp, " TX: bytes packets errors dropped carrier collsns %s%s",
s->tx_compressed ? "compressed" : "", _SL_);
fprintf(fp, " %-10llu %-8llu %-7llu %-7llu %-7llu %-7llu",
(unsigned long long)s->tx_bytes,
(unsigned long long)s->tx_packets,
(unsigned long long)s->tx_errors,
(unsigned long long)s->tx_dropped,
(unsigned long long)s->tx_carrier_errors,
(unsigned long long)s->collisions);
if (s->tx_compressed)
fprintf(fp, " %-7llu",
(unsigned long long)s->tx_compressed);
if (show_stats > 1) {
fprintf(fp, "%s", _SL_);
fprintf(fp, " TX errors: aborted fifo window heartbeat%s", _SL_);
fprintf(fp, " %-7llu %-7llu %-7llu %-7llu",
(unsigned long long)s->tx_aborted_errors,
(unsigned long long)s->tx_fifo_errors,
(unsigned long long)s->tx_window_errors,
(unsigned long long)s->tx_heartbeat_errors);
}
}
if (do_link && !tb[IFLA_STATS64] && tb[IFLA_STATS] && show_stats) {
struct rtnl_link_stats slocal;
struct rtnl_link_stats *s = RTA_DATA(tb[IFLA_STATS]);
if (((unsigned long)s) & (sizeof(unsigned long)-1)) {
memcpy(&slocal, s, sizeof(slocal));
s = &slocal;
}
fprintf(fp, "%s", _SL_);
fprintf(fp, " RX: bytes packets errors dropped overrun mcast %s%s",
s->rx_compressed ? "compressed" : "", _SL_);
fprintf(fp, " %-10u %-8u %-7u %-7u %-7u %-7u",
s->rx_bytes, s->rx_packets, s->rx_errors,
s->rx_dropped, s->rx_over_errors,
s->multicast
);
if (s->rx_compressed)
fprintf(fp, " %-7u", s->rx_compressed);
if (show_stats > 1) {
fprintf(fp, "%s", _SL_);
fprintf(fp, " RX errors: length crc frame fifo missed%s", _SL_);
fprintf(fp, " %-7u %-7u %-7u %-7u %-7u",
s->rx_length_errors,
s->rx_crc_errors,
s->rx_frame_errors,
s->rx_fifo_errors,
s->rx_missed_errors
);
}
fprintf(fp, "%s", _SL_);
fprintf(fp, " TX: bytes packets errors dropped carrier collsns %s%s",
s->tx_compressed ? "compressed" : "", _SL_);
fprintf(fp, " %-10u %-8u %-7u %-7u %-7u %-7u",
s->tx_bytes, s->tx_packets, s->tx_errors,
s->tx_dropped, s->tx_carrier_errors, s->collisions);
if (s->tx_compressed)
fprintf(fp, " %-7u", s->tx_compressed);
if (show_stats > 1) {
fprintf(fp, "%s", _SL_);
fprintf(fp, " TX errors: aborted fifo window heartbeat%s", _SL_);
fprintf(fp, " %-7u %-7u %-7u %-7u",
s->tx_aborted_errors,
s->tx_fifo_errors,
s->tx_window_errors,
s->tx_heartbeat_errors
);
}
}
if (do_link && tb[IFLA_VFINFO_LIST] && tb[IFLA_NUM_VF]) {
struct rtattr *i, *vflist = tb[IFLA_VFINFO_LIST];
int rem = RTA_PAYLOAD(vflist);
for (i = RTA_DATA(vflist); RTA_OK(i, rem); i = RTA_NEXT(i, rem))
print_vfinfo(fp, i);
}
fprintf(fp, "\n");
fflush(fp);
return 0;
}
static int flush_update(void)
{
if (rtnl_send_check(&rth, filter.flushb, filter.flushp) < 0) {
perror("Failed to send flush request");
return -1;
}
filter.flushp = 0;
return 0;
}
static int set_lifetime(unsigned int *lifetime, char *argv)
{
if (strcmp(argv, "forever") == 0)
*lifetime = INFINITY_LIFE_TIME;
else if (get_u32(lifetime, argv, 0))
return -1;
return 0;
}
int print_addrinfo(const struct sockaddr_nl *who, struct nlmsghdr *n,
void *arg)
{
FILE *fp = (FILE*)arg;
struct ifaddrmsg *ifa = NLMSG_DATA(n);
int len = n->nlmsg_len;
int deprecated = 0;
struct rtattr * rta_tb[IFA_MAX+1];
char abuf[256];
SPRINT_BUF(b1);
if (n->nlmsg_type != RTM_NEWADDR && n->nlmsg_type != RTM_DELADDR)
return 0;
len -= NLMSG_LENGTH(sizeof(*ifa));
if (len < 0) {
fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
return -1;
}
if (filter.flushb && n->nlmsg_type != RTM_NEWADDR)
return 0;
parse_rtattr(rta_tb, IFA_MAX, IFA_RTA(ifa), n->nlmsg_len - NLMSG_LENGTH(sizeof(*ifa)));
if (!rta_tb[IFA_LOCAL])
rta_tb[IFA_LOCAL] = rta_tb[IFA_ADDRESS];
if (!rta_tb[IFA_ADDRESS])
rta_tb[IFA_ADDRESS] = rta_tb[IFA_LOCAL];
if (filter.ifindex && filter.ifindex != ifa->ifa_index)
return 0;
if ((filter.scope^ifa->ifa_scope)&filter.scopemask)
return 0;
if ((filter.flags^ifa->ifa_flags)&filter.flagmask)
return 0;
if (filter.label) {
SPRINT_BUF(b1);
const char *label;
if (rta_tb[IFA_LABEL])
label = RTA_DATA(rta_tb[IFA_LABEL]);
else
label = ll_idx_n2a(ifa->ifa_index, b1);
if (fnmatch(filter.label, label, 0) != 0)
return 0;
}
if (filter.pfx.family) {
if (rta_tb[IFA_LOCAL]) {
inet_prefix dst;
memset(&dst, 0, sizeof(dst));
dst.family = ifa->ifa_family;
memcpy(&dst.data, RTA_DATA(rta_tb[IFA_LOCAL]), RTA_PAYLOAD(rta_tb[IFA_LOCAL]));
if (inet_addr_match(&dst, &filter.pfx, filter.pfx.bitlen))
return 0;
}
}
if (filter.family && filter.family != ifa->ifa_family)
return 0;
if (filter.flushb) {
struct nlmsghdr *fn;
if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) {
if (flush_update())
return -1;
}
fn = (struct nlmsghdr*)(filter.flushb + NLMSG_ALIGN(filter.flushp));
memcpy(fn, n, n->nlmsg_len);
fn->nlmsg_type = RTM_DELADDR;
fn->nlmsg_flags = NLM_F_REQUEST;
fn->nlmsg_seq = ++rth.seq;
filter.flushp = (((char*)fn) + n->nlmsg_len) - filter.flushb;
filter.flushed++;
if (show_stats < 2)
return 0;
}
if (n->nlmsg_type == RTM_DELADDR)
fprintf(fp, "Deleted ");
if (filter.oneline || filter.flushb)
fprintf(fp, "%u: %s", ifa->ifa_index, ll_index_to_name(ifa->ifa_index));
if (ifa->ifa_family == AF_INET)
fprintf(fp, " inet ");
else if (ifa->ifa_family == AF_INET6)
fprintf(fp, " inet6 ");
else if (ifa->ifa_family == AF_DECnet)
fprintf(fp, " dnet ");
else if (ifa->ifa_family == AF_IPX)
fprintf(fp, " ipx ");
else
fprintf(fp, " family %d ", ifa->ifa_family);
if (rta_tb[IFA_LOCAL]) {
fprintf(fp, "%s", rt_addr_n2a(ifa->ifa_family,
RTA_PAYLOAD(rta_tb[IFA_LOCAL]),
RTA_DATA(rta_tb[IFA_LOCAL]),
abuf, sizeof(abuf)));
if (rta_tb[IFA_ADDRESS] == NULL ||
memcmp(RTA_DATA(rta_tb[IFA_ADDRESS]), RTA_DATA(rta_tb[IFA_LOCAL]), 4) == 0) {
fprintf(fp, "/%d ", ifa->ifa_prefixlen);
} else {
fprintf(fp, " peer %s/%d ",
rt_addr_n2a(ifa->ifa_family,
RTA_PAYLOAD(rta_tb[IFA_ADDRESS]),
RTA_DATA(rta_tb[IFA_ADDRESS]),
abuf, sizeof(abuf)),
ifa->ifa_prefixlen);
}
}
if (rta_tb[IFA_BROADCAST]) {
fprintf(fp, "brd %s ",
rt_addr_n2a(ifa->ifa_family,
RTA_PAYLOAD(rta_tb[IFA_BROADCAST]),
RTA_DATA(rta_tb[IFA_BROADCAST]),
abuf, sizeof(abuf)));
}
if (rta_tb[IFA_ANYCAST]) {
fprintf(fp, "any %s ",
rt_addr_n2a(ifa->ifa_family,
RTA_PAYLOAD(rta_tb[IFA_ANYCAST]),
RTA_DATA(rta_tb[IFA_ANYCAST]),
abuf, sizeof(abuf)));
}
fprintf(fp, "scope %s ", rtnl_rtscope_n2a(ifa->ifa_scope, b1, sizeof(b1)));
if (ifa->ifa_flags&IFA_F_SECONDARY) {
ifa->ifa_flags &= ~IFA_F_SECONDARY;
if (ifa->ifa_family == AF_INET6)
fprintf(fp, "temporary ");
else
fprintf(fp, "secondary ");
}
if (ifa->ifa_flags&IFA_F_TENTATIVE) {
ifa->ifa_flags &= ~IFA_F_TENTATIVE;
fprintf(fp, "tentative ");
}
if (ifa->ifa_flags&IFA_F_DEPRECATED) {
ifa->ifa_flags &= ~IFA_F_DEPRECATED;
deprecated = 1;
fprintf(fp, "deprecated ");
}
if (ifa->ifa_flags&IFA_F_HOMEADDRESS) {
ifa->ifa_flags &= ~IFA_F_HOMEADDRESS;
fprintf(fp, "home ");
}
if (ifa->ifa_flags&IFA_F_NODAD) {
ifa->ifa_flags &= ~IFA_F_NODAD;
fprintf(fp, "nodad ");
}
if (!(ifa->ifa_flags&IFA_F_PERMANENT)) {
fprintf(fp, "dynamic ");
} else
ifa->ifa_flags &= ~IFA_F_PERMANENT;
if (ifa->ifa_flags&IFA_F_DADFAILED) {
ifa->ifa_flags &= ~IFA_F_DADFAILED;
fprintf(fp, "dadfailed ");
}
if (ifa->ifa_flags)
fprintf(fp, "flags %02x ", ifa->ifa_flags);
if (rta_tb[IFA_LABEL])
fprintf(fp, "%s", (char*)RTA_DATA(rta_tb[IFA_LABEL]));
if (rta_tb[IFA_CACHEINFO]) {
struct ifa_cacheinfo *ci = RTA_DATA(rta_tb[IFA_CACHEINFO]);
char buf[128];
fprintf(fp, "%s", _SL_);
if (ci->ifa_valid == INFINITY_LIFE_TIME)
sprintf(buf, "valid_lft forever");
else
sprintf(buf, "valid_lft %usec", ci->ifa_valid);
if (ci->ifa_prefered == INFINITY_LIFE_TIME)
sprintf(buf+strlen(buf), " preferred_lft forever");
else {
if (deprecated)
sprintf(buf+strlen(buf), " preferred_lft %dsec",
ci->ifa_prefered);
else
sprintf(buf+strlen(buf), " preferred_lft %usec",
ci->ifa_prefered);
}
fprintf(fp, " %s", buf);
}
fprintf(fp, "\n");
fflush(fp);
return 0;
}
int print_addrinfo_primary(const struct sockaddr_nl *who, struct nlmsghdr *n,
void *arg)
{
struct ifaddrmsg *ifa = NLMSG_DATA(n);
if (!ifa->ifa_flags & IFA_F_SECONDARY)
return 0;
return print_addrinfo(who, n, arg);
}
int print_addrinfo_secondary(const struct sockaddr_nl *who, struct nlmsghdr *n,
void *arg)
{
struct ifaddrmsg *ifa = NLMSG_DATA(n);
if (ifa->ifa_flags & IFA_F_SECONDARY)
return 0;
return print_addrinfo(who, n, arg);
}
struct nlmsg_list
{
struct nlmsg_list *next;
struct nlmsghdr h;
};
static int print_selected_addrinfo(int ifindex, struct nlmsg_list *ainfo, FILE *fp)
{
for ( ;ainfo ; ainfo = ainfo->next) {
struct nlmsghdr *n = &ainfo->h;
struct ifaddrmsg *ifa = NLMSG_DATA(n);
if (n->nlmsg_type != RTM_NEWADDR)
continue;
if (n->nlmsg_len < NLMSG_LENGTH(sizeof(ifa)))
return -1;
if (ifa->ifa_index != ifindex ||
(filter.family && filter.family != ifa->ifa_family))
continue;
print_addrinfo(NULL, n, fp);
}
return 0;
}
static int store_nlmsg(const struct sockaddr_nl *who, struct nlmsghdr *n,
void *arg)
{
struct nlmsg_list **linfo = (struct nlmsg_list**)arg;
struct nlmsg_list *h;
struct nlmsg_list **lp;
h = malloc(n->nlmsg_len+sizeof(void*));
if (h == NULL)
return -1;
memcpy(&h->h, n, n->nlmsg_len);
h->next = NULL;
for (lp = linfo; *lp; lp = &(*lp)->next) /* NOTHING */;
*lp = h;
ll_remember_index(who, n, NULL);
return 0;
}
static int ipaddr_list_or_flush(int argc, char **argv, int flush)
{
struct nlmsg_list *linfo = NULL;
struct nlmsg_list *ainfo = NULL;
struct nlmsg_list *l, *n;
char *filter_dev = NULL;
int no_link = 0;
ipaddr_reset_filter(oneline);
filter.showqueue = 1;
if (filter.family == AF_UNSPEC)
filter.family = preferred_family;
if (flush) {
if (argc <= 0) {
fprintf(stderr, "Flush requires arguments.\n");
return -1;
}
if (filter.family == AF_PACKET) {
fprintf(stderr, "Cannot flush link addresses.\n");
return -1;
}
}
while (argc > 0) {
if (strcmp(*argv, "to") == 0) {
NEXT_ARG();
get_prefix(&filter.pfx, *argv, filter.family);
if (filter.family == AF_UNSPEC)
filter.family = filter.pfx.family;
} else if (strcmp(*argv, "scope") == 0) {
unsigned scope = 0;
NEXT_ARG();
filter.scopemask = -1;
if (rtnl_rtscope_a2n(&scope, *argv)) {
if (strcmp(*argv, "all") != 0)
invarg("invalid \"scope\"\n", *argv);
scope = RT_SCOPE_NOWHERE;
filter.scopemask = 0;
}
filter.scope = scope;
} else if (strcmp(*argv, "up") == 0) {
filter.up = 1;
} else if (strcmp(*argv, "dynamic") == 0) {
filter.flags &= ~IFA_F_PERMANENT;
filter.flagmask |= IFA_F_PERMANENT;
} else if (strcmp(*argv, "permanent") == 0) {
filter.flags |= IFA_F_PERMANENT;
filter.flagmask |= IFA_F_PERMANENT;
} else if (strcmp(*argv, "secondary") == 0 ||
strcmp(*argv, "temporary") == 0) {
filter.flags |= IFA_F_SECONDARY;
filter.flagmask |= IFA_F_SECONDARY;
} else if (strcmp(*argv, "primary") == 0) {
filter.flags &= ~IFA_F_SECONDARY;
filter.flagmask |= IFA_F_SECONDARY;
} else if (strcmp(*argv, "tentative") == 0) {
filter.flags |= IFA_F_TENTATIVE;
filter.flagmask |= IFA_F_TENTATIVE;
} else if (strcmp(*argv, "deprecated") == 0) {
filter.flags |= IFA_F_DEPRECATED;
filter.flagmask |= IFA_F_DEPRECATED;
} else if (strcmp(*argv, "home") == 0) {
filter.flags |= IFA_F_HOMEADDRESS;
filter.flagmask |= IFA_F_HOMEADDRESS;
} else if (strcmp(*argv, "nodad") == 0) {
filter.flags |= IFA_F_NODAD;
filter.flagmask |= IFA_F_NODAD;
} else if (strcmp(*argv, "dadfailed") == 0) {
filter.flags |= IFA_F_DADFAILED;
filter.flagmask |= IFA_F_DADFAILED;
} else if (strcmp(*argv, "label") == 0) {
NEXT_ARG();
filter.label = *argv;
} else {
if (strcmp(*argv, "dev") == 0) {
NEXT_ARG();
}
if (matches(*argv, "help") == 0)
usage();
if (filter_dev)
duparg2("dev", *argv);
filter_dev = *argv;
}
argv++; argc--;
}
if (rtnl_wilddump_request(&rth, preferred_family, RTM_GETLINK) < 0) {
perror("Cannot send dump request");
exit(1);
}
if (rtnl_dump_filter(&rth, store_nlmsg, &linfo, NULL, NULL) < 0) {
fprintf(stderr, "Dump terminated\n");
exit(1);
}
if (filter_dev) {
filter.ifindex = ll_name_to_index(filter_dev);
if (filter.ifindex <= 0) {
fprintf(stderr, "Device \"%s\" does not exist.\n", filter_dev);
return -1;
}
}
if (flush) {
int round = 0;
char flushb[4096-512];
filter.flushb = flushb;
filter.flushp = 0;
filter.flushe = sizeof(flushb);
while (round < MAX_ROUNDS) {
const struct rtnl_dump_filter_arg a[3] = {
{
.filter = print_addrinfo_secondary,
.arg1 = stdout,
.junk = NULL,
.arg2 = NULL
},
{
.filter = print_addrinfo_primary,
.arg1 = stdout,
.junk = NULL,
.arg2 = NULL
},
{
.filter = NULL,
.arg1 = NULL,
.junk = NULL,
.arg2 = NULL
},
};
if (rtnl_wilddump_request(&rth, filter.family, RTM_GETADDR) < 0) {
perror("Cannot send dump request");
exit(1);
}
filter.flushed = 0;
if (rtnl_dump_filter_l(&rth, a) < 0) {
fprintf(stderr, "Flush terminated\n");
exit(1);
}
if (filter.flushed == 0) {
if (show_stats) {
if (round == 0)
printf("Nothing to flush.\n");
else
printf("*** Flush is complete after %d round%s ***\n", round, round>1?"s":"");
}
fflush(stdout);
return 0;
}
round++;
if (flush_update() < 0)
return 1;
if (show_stats) {
printf("\n*** Round %d, deleting %d addresses ***\n", round, filter.flushed);
fflush(stdout);
}
}
fprintf(stderr, "*** Flush remains incomplete after %d rounds. ***\n", MAX_ROUNDS); fflush(stderr);
return 1;
}
if (filter.family != AF_PACKET) {
if (rtnl_wilddump_request(&rth, filter.family, RTM_GETADDR) < 0) {
perror("Cannot send dump request");
exit(1);
}
if (rtnl_dump_filter(&rth, store_nlmsg, &ainfo, NULL, NULL) < 0) {
fprintf(stderr, "Dump terminated\n");
exit(1);
}
}
if (filter.family && filter.family != AF_PACKET) {
struct nlmsg_list **lp;
lp=&linfo;
if (filter.oneline)
no_link = 1;
while ((l=*lp)!=NULL) {
int ok = 0;
struct ifinfomsg *ifi = NLMSG_DATA(&l->h);
struct nlmsg_list *a;
for (a=ainfo; a; a=a->next) {
struct nlmsghdr *n = &a->h;
struct ifaddrmsg *ifa = NLMSG_DATA(n);
if (ifa->ifa_index != ifi->ifi_index ||
(filter.family && filter.family != ifa->ifa_family))
continue;
if ((filter.scope^ifa->ifa_scope)&filter.scopemask)
continue;
if ((filter.flags^ifa->ifa_flags)&filter.flagmask)
continue;
if (filter.pfx.family || filter.label) {
struct rtattr *tb[IFA_MAX+1];
parse_rtattr(tb, IFA_MAX, IFA_RTA(ifa), IFA_PAYLOAD(n));
if (!tb[IFA_LOCAL])
tb[IFA_LOCAL] = tb[IFA_ADDRESS];
if (filter.pfx.family && tb[IFA_LOCAL]) {
inet_prefix dst;
memset(&dst, 0, sizeof(dst));
dst.family = ifa->ifa_family;
memcpy(&dst.data, RTA_DATA(tb[IFA_LOCAL]), RTA_PAYLOAD(tb[IFA_LOCAL]));
if (inet_addr_match(&dst, &filter.pfx, filter.pfx.bitlen))
continue;
}
if (filter.label) {
SPRINT_BUF(b1);
const char *label;
if (tb[IFA_LABEL])
label = RTA_DATA(tb[IFA_LABEL]);
else
label = ll_idx_n2a(ifa->ifa_index, b1);
if (fnmatch(filter.label, label, 0) != 0)
continue;
}
}
ok = 1;
break;
}
if (!ok)
*lp = l->next;
else
lp = &l->next;
}
}
for (l=linfo; l; l = n) {
n = l->next;
if (no_link || print_linkinfo(NULL, &l->h, stdout) == 0) {
struct ifinfomsg *ifi = NLMSG_DATA(&l->h);
if (filter.family != AF_PACKET)
print_selected_addrinfo(ifi->ifi_index, ainfo, stdout);
}
fflush(stdout);
free(l);
}
return 0;
}
int ipaddr_list_link(int argc, char **argv)
{
preferred_family = AF_PACKET;
do_link = 1;
return ipaddr_list_or_flush(argc, argv, 0);
}
void ipaddr_reset_filter(int oneline)
{
memset(&filter, 0, sizeof(filter));
filter.oneline = oneline;
}
static int default_scope(inet_prefix *lcl)
{
if (lcl->family == AF_INET) {
if (lcl->bytelen >= 1 && *(__u8*)&lcl->data == 127)
return RT_SCOPE_HOST;
}
return 0;
}
static int ipaddr_modify(int cmd, int flags, int argc, char **argv)
{
struct {
struct nlmsghdr n;
struct ifaddrmsg ifa;
char buf[256];
} req;
char *d = NULL;
char *l = NULL;
char *lcl_arg = NULL;
char *valid_lftp = NULL;
char *preferred_lftp = NULL;
inet_prefix lcl;
inet_prefix peer;
int local_len = 0;
int peer_len = 0;
int brd_len = 0;
int any_len = 0;
int scoped = 0;
__u32 preferred_lft = INFINITY_LIFE_TIME;
__u32 valid_lft = INFINITY_LIFE_TIME;
struct ifa_cacheinfo cinfo;
memset(&req, 0, sizeof(req));
req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
req.n.nlmsg_flags = NLM_F_REQUEST | flags;
req.n.nlmsg_type = cmd;
req.ifa.ifa_family = preferred_family;
while (argc > 0) {
if (strcmp(*argv, "peer") == 0 ||
strcmp(*argv, "remote") == 0) {
NEXT_ARG();
if (peer_len)
duparg("peer", *argv);
get_prefix(&peer, *argv, req.ifa.ifa_family);
peer_len = peer.bytelen;
if (req.ifa.ifa_family == AF_UNSPEC)
req.ifa.ifa_family = peer.family;
addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &peer.data, peer.bytelen);
req.ifa.ifa_prefixlen = peer.bitlen;
} else if (matches(*argv, "broadcast") == 0 ||
strcmp(*argv, "brd") == 0) {
inet_prefix addr;
NEXT_ARG();
if (brd_len)
duparg("broadcast", *argv);
if (strcmp(*argv, "+") == 0)
brd_len = -1;
else if (strcmp(*argv, "-") == 0)
brd_len = -2;
else {
get_addr(&addr, *argv, req.ifa.ifa_family);
if (req.ifa.ifa_family == AF_UNSPEC)
req.ifa.ifa_family = addr.family;
addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &addr.data, addr.bytelen);
brd_len = addr.bytelen;
}
} else if (strcmp(*argv, "anycast") == 0) {
inet_prefix addr;
NEXT_ARG();
if (any_len)
duparg("anycast", *argv);
get_addr(&addr, *argv, req.ifa.ifa_family);
if (req.ifa.ifa_family == AF_UNSPEC)
req.ifa.ifa_family = addr.family;
addattr_l(&req.n, sizeof(req), IFA_ANYCAST, &addr.data, addr.bytelen);
any_len = addr.bytelen;
} else if (strcmp(*argv, "scope") == 0) {
unsigned scope = 0;
NEXT_ARG();
if (rtnl_rtscope_a2n(&scope, *argv))
invarg(*argv, "invalid scope value.");
req.ifa.ifa_scope = scope;
scoped = 1;
} else if (strcmp(*argv, "dev") == 0) {
NEXT_ARG();
d = *argv;
} else if (strcmp(*argv, "label") == 0) {
NEXT_ARG();
l = *argv;
addattr_l(&req.n, sizeof(req), IFA_LABEL, l, strlen(l)+1);
} else if (matches(*argv, "valid_lft") == 0) {
if (valid_lftp)
duparg("valid_lft", *argv);
NEXT_ARG();
valid_lftp = *argv;
if (set_lifetime(&valid_lft, *argv))
invarg("valid_lft value", *argv);
} else if (matches(*argv, "preferred_lft") == 0) {
if (preferred_lftp)
duparg("preferred_lft", *argv);
NEXT_ARG();
preferred_lftp = *argv;
if (set_lifetime(&preferred_lft, *argv))
invarg("preferred_lft value", *argv);
} else if (strcmp(*argv, "home") == 0) {
req.ifa.ifa_flags |= IFA_F_HOMEADDRESS;
} else if (strcmp(*argv, "nodad") == 0) {
req.ifa.ifa_flags |= IFA_F_NODAD;
} else {
if (strcmp(*argv, "local") == 0) {
NEXT_ARG();
}
if (matches(*argv, "help") == 0)
usage();
if (local_len)
duparg2("local", *argv);
lcl_arg = *argv;
get_prefix(&lcl, *argv, req.ifa.ifa_family);
if (req.ifa.ifa_family == AF_UNSPEC)
req.ifa.ifa_family = lcl.family;
addattr_l(&req.n, sizeof(req), IFA_LOCAL, &lcl.data, lcl.bytelen);
local_len = lcl.bytelen;
}
argc--; argv++;
}
if (d == NULL) {
fprintf(stderr, "Not enough information: \"dev\" argument is required.\n");
return -1;
}
if (l && matches(d, l) != 0) {
fprintf(stderr, "\"dev\" (%s) must match \"label\" (%s).\n", d, l);
return -1;
}
if (peer_len == 0 && local_len) {
if (cmd == RTM_DELADDR && lcl.family == AF_INET && !(lcl.flags & PREFIXLEN_SPECIFIED)) {
fprintf(stderr,
"Warning: Executing wildcard deletion to stay compatible with old scripts.\n" \
" Explicitly specify the prefix length (%s/%d) to avoid this warning.\n" \
" This special behaviour is likely to disappear in further releases,\n" \
" fix your scripts!\n", lcl_arg, local_len*8);
} else {
peer = lcl;
addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &lcl.data, lcl.bytelen);
}
}
if (req.ifa.ifa_prefixlen == 0)
req.ifa.ifa_prefixlen = lcl.bitlen;
if (brd_len < 0 && cmd != RTM_DELADDR) {
inet_prefix brd;
int i;
if (req.ifa.ifa_family != AF_INET) {
fprintf(stderr, "Broadcast can be set only for IPv4 addresses\n");
return -1;
}
brd = peer;
if (brd.bitlen <= 30) {
for (i=31; i>=brd.bitlen; i--) {
if (brd_len == -1)
brd.data[0] |= htonl(1<<(31-i));
else
brd.data[0] &= ~htonl(1<<(31-i));
}
addattr_l(&req.n, sizeof(req), IFA_BROADCAST, &brd.data, brd.bytelen);
brd_len = brd.bytelen;
}
}
if (!scoped && cmd != RTM_DELADDR)
req.ifa.ifa_scope = default_scope(&lcl);
ll_init_map(&rth);
if ((req.ifa.ifa_index = ll_name_to_index(d)) == 0) {
fprintf(stderr, "Cannot find device \"%s\"\n", d);
return -1;
}
if (valid_lftp || preferred_lftp) {
if (!valid_lft) {
fprintf(stderr, "valid_lft is zero\n");
return -1;
}
if (valid_lft < preferred_lft) {
fprintf(stderr, "preferred_lft is greater than valid_lft\n");
return -1;
}
memset(&cinfo, 0, sizeof(cinfo));
cinfo.ifa_prefered = preferred_lft;
cinfo.ifa_valid = valid_lft;
addattr_l(&req.n, sizeof(req), IFA_CACHEINFO, &cinfo,
sizeof(cinfo));
}
if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
return -2;
return 0;
}
int do_ipaddr(int argc, char **argv)
{
if (argc < 1)
return ipaddr_list_or_flush(0, NULL, 0);
if (matches(*argv, "add") == 0)
return ipaddr_modify(RTM_NEWADDR, NLM_F_CREATE|NLM_F_EXCL, argc-1, argv+1);
if (matches(*argv, "change") == 0 ||
strcmp(*argv, "chg") == 0)
return ipaddr_modify(RTM_NEWADDR, NLM_F_REPLACE, argc-1, argv+1);
if (matches(*argv, "replace") == 0)
return ipaddr_modify(RTM_NEWADDR, NLM_F_CREATE|NLM_F_REPLACE, argc-1, argv+1);
if (matches(*argv, "delete") == 0)
return ipaddr_modify(RTM_DELADDR, 0, argc-1, argv+1);
if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
|| matches(*argv, "lst") == 0)
return ipaddr_list_or_flush(argc-1, argv+1, 0);
if (matches(*argv, "flush") == 0)
return ipaddr_list_or_flush(argc-1, argv+1, 1);
if (matches(*argv, "help") == 0)
usage();
fprintf(stderr, "Command \"%s\" is unknown, try \"ip addr help\".\n", *argv);
exit(-1);
}