mirror of
https://git.proxmox.com/git/mirror_iproute2
synced 2025-11-04 06:22:48 +00:00
c079e121a7
There have been several instances where response from kernel has overrun the stack buffer from the caller. Avoid future problems by passing a size argument. Also drop the unused peer and group arguments to rtnl_talk.
668 lines
16 KiB
C
668 lines
16 KiB
C
/*
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* Copyright (C)2006 USAGI/WIDE Project
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses>.
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*/
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/*
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* based on ipneigh.c
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*/
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/*
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* Authors:
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* Masahide NAKAMURA @USAGI
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/time.h>
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#include <sys/socket.h>
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#include <time.h>
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#include "utils.h"
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#include "ip_common.h"
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static struct
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{
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int family;
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int index;
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#define NONE_DEV (-1)
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char name[1024];
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} filter;
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static void usage(void) __attribute__((noreturn));
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static void usage(void)
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{
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fprintf(stderr,
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"Usage: ip ntable change name NAME [ dev DEV ]\n"
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" [ thresh1 VAL ] [ thresh2 VAL ] [ thresh3 VAL ] [ gc_int MSEC ]\n"
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" [ PARMS ]\n"
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"Usage: ip ntable show [ dev DEV ] [ name NAME ]\n"
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"PARMS := [ base_reachable MSEC ] [ retrans MSEC ] [ gc_stale MSEC ]\n"
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" [ delay_probe MSEC ] [ queue LEN ]\n"
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" [ app_probs VAL ] [ ucast_probes VAL ] [ mcast_probes VAL ]\n"
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" [ anycast_delay MSEC ] [ proxy_delay MSEC ] [ proxy_queue LEN ]\n"
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" [ locktime MSEC ]\n"
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);
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exit(-1);
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}
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static int ipntable_modify(int cmd, int flags, int argc, char **argv)
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{
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struct {
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struct nlmsghdr n;
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struct ndtmsg ndtm;
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char buf[1024];
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} req;
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char *namep = NULL;
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char *threshsp = NULL;
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char *gc_intp = NULL;
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char parms_buf[1024];
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struct rtattr *parms_rta = (struct rtattr *)parms_buf;
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int parms_change = 0;
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memset(&req, 0, sizeof(req));
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req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ndtmsg));
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req.n.nlmsg_flags = NLM_F_REQUEST|flags;
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req.n.nlmsg_type = cmd;
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req.ndtm.ndtm_family = preferred_family;
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req.ndtm.ndtm_pad1 = 0;
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req.ndtm.ndtm_pad2 = 0;
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memset(&parms_buf, 0, sizeof(parms_buf));
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parms_rta->rta_type = NDTA_PARMS;
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parms_rta->rta_len = RTA_LENGTH(0);
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while (argc > 0) {
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if (strcmp(*argv, "name") == 0) {
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int len;
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NEXT_ARG();
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if (namep)
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duparg("NAME", *argv);
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namep = *argv;
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len = strlen(namep) + 1;
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addattr_l(&req.n, sizeof(req), NDTA_NAME, namep, len);
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} else if (strcmp(*argv, "thresh1") == 0) {
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__u32 thresh1;
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NEXT_ARG();
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threshsp = *argv;
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if (get_u32(&thresh1, *argv, 0))
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invarg("\"thresh1\" value is invalid", *argv);
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addattr32(&req.n, sizeof(req), NDTA_THRESH1, thresh1);
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} else if (strcmp(*argv, "thresh2") == 0) {
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__u32 thresh2;
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NEXT_ARG();
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threshsp = *argv;
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if (get_u32(&thresh2, *argv, 0))
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invarg("\"thresh2\" value is invalid", *argv);
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addattr32(&req.n, sizeof(req), NDTA_THRESH2, thresh2);
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} else if (strcmp(*argv, "thresh3") == 0) {
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__u32 thresh3;
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NEXT_ARG();
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threshsp = *argv;
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if (get_u32(&thresh3, *argv, 0))
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invarg("\"thresh3\" value is invalid", *argv);
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addattr32(&req.n, sizeof(req), NDTA_THRESH3, thresh3);
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} else if (strcmp(*argv, "gc_int") == 0) {
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__u64 gc_int;
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NEXT_ARG();
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gc_intp = *argv;
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if (get_u64(&gc_int, *argv, 0))
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invarg("\"gc_int\" value is invalid", *argv);
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addattr_l(&req.n, sizeof(req), NDTA_GC_INTERVAL,
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&gc_int, sizeof(gc_int));
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} else if (strcmp(*argv, "dev") == 0) {
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__u32 ifindex;
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NEXT_ARG();
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ifindex = ll_name_to_index(*argv);
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if (ifindex == 0) {
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fprintf(stderr, "Cannot find device \"%s\"\n", *argv);
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return -1;
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}
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rta_addattr32(parms_rta, sizeof(parms_buf),
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NDTPA_IFINDEX, ifindex);
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} else if (strcmp(*argv, "base_reachable") == 0) {
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__u64 breachable;
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NEXT_ARG();
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if (get_u64(&breachable, *argv, 0))
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invarg("\"base_reachable\" value is invalid", *argv);
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rta_addattr_l(parms_rta, sizeof(parms_buf),
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NDTPA_BASE_REACHABLE_TIME,
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&breachable, sizeof(breachable));
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parms_change = 1;
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} else if (strcmp(*argv, "retrans") == 0) {
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__u64 retrans;
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NEXT_ARG();
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if (get_u64(&retrans, *argv, 0))
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invarg("\"retrans\" value is invalid", *argv);
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rta_addattr_l(parms_rta, sizeof(parms_buf),
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NDTPA_RETRANS_TIME,
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&retrans, sizeof(retrans));
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parms_change = 1;
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} else if (strcmp(*argv, "gc_stale") == 0) {
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__u64 gc_stale;
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NEXT_ARG();
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if (get_u64(&gc_stale, *argv, 0))
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invarg("\"gc_stale\" value is invalid", *argv);
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rta_addattr_l(parms_rta, sizeof(parms_buf),
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NDTPA_GC_STALETIME,
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&gc_stale, sizeof(gc_stale));
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parms_change = 1;
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} else if (strcmp(*argv, "delay_probe") == 0) {
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__u64 delay_probe;
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NEXT_ARG();
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if (get_u64(&delay_probe, *argv, 0))
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invarg("\"delay_probe\" value is invalid", *argv);
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rta_addattr_l(parms_rta, sizeof(parms_buf),
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NDTPA_DELAY_PROBE_TIME,
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&delay_probe, sizeof(delay_probe));
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parms_change = 1;
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} else if (strcmp(*argv, "queue") == 0) {
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__u32 queue;
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NEXT_ARG();
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if (get_u32(&queue, *argv, 0))
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invarg("\"queue\" value is invalid", *argv);
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if (!parms_rta)
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parms_rta = (struct rtattr *)&parms_buf;
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rta_addattr32(parms_rta, sizeof(parms_buf),
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NDTPA_QUEUE_LEN, queue);
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parms_change = 1;
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} else if (strcmp(*argv, "app_probes") == 0) {
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__u32 aprobe;
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NEXT_ARG();
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if (get_u32(&aprobe, *argv, 0))
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invarg("\"app_probes\" value is invalid", *argv);
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rta_addattr32(parms_rta, sizeof(parms_buf),
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NDTPA_APP_PROBES, aprobe);
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parms_change = 1;
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} else if (strcmp(*argv, "ucast_probes") == 0) {
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__u32 uprobe;
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NEXT_ARG();
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if (get_u32(&uprobe, *argv, 0))
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invarg("\"ucast_probes\" value is invalid", *argv);
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rta_addattr32(parms_rta, sizeof(parms_buf),
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NDTPA_UCAST_PROBES, uprobe);
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parms_change = 1;
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} else if (strcmp(*argv, "mcast_probes") == 0) {
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__u32 mprobe;
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NEXT_ARG();
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if (get_u32(&mprobe, *argv, 0))
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invarg("\"mcast_probes\" value is invalid", *argv);
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rta_addattr32(parms_rta, sizeof(parms_buf),
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NDTPA_MCAST_PROBES, mprobe);
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parms_change = 1;
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} else if (strcmp(*argv, "anycast_delay") == 0) {
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__u64 anycast_delay;
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NEXT_ARG();
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if (get_u64(&anycast_delay, *argv, 0))
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invarg("\"anycast_delay\" value is invalid", *argv);
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rta_addattr_l(parms_rta, sizeof(parms_buf),
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NDTPA_ANYCAST_DELAY,
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&anycast_delay, sizeof(anycast_delay));
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parms_change = 1;
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} else if (strcmp(*argv, "proxy_delay") == 0) {
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__u64 proxy_delay;
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NEXT_ARG();
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if (get_u64(&proxy_delay, *argv, 0))
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invarg("\"proxy_delay\" value is invalid", *argv);
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rta_addattr_l(parms_rta, sizeof(parms_buf),
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NDTPA_PROXY_DELAY,
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&proxy_delay, sizeof(proxy_delay));
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parms_change = 1;
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} else if (strcmp(*argv, "proxy_queue") == 0) {
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__u32 pqueue;
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NEXT_ARG();
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if (get_u32(&pqueue, *argv, 0))
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invarg("\"proxy_queue\" value is invalid", *argv);
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rta_addattr32(parms_rta, sizeof(parms_buf),
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NDTPA_PROXY_QLEN, pqueue);
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parms_change = 1;
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} else if (strcmp(*argv, "locktime") == 0) {
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__u64 locktime;
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NEXT_ARG();
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if (get_u64(&locktime, *argv, 0))
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invarg("\"locktime\" value is invalid", *argv);
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rta_addattr_l(parms_rta, sizeof(parms_buf),
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NDTPA_LOCKTIME,
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&locktime, sizeof(locktime));
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parms_change = 1;
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} else {
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invarg("unknown", *argv);
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}
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argc--; argv++;
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}
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if (!namep)
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missarg("NAME");
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if (!threshsp && !gc_intp && !parms_change) {
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fprintf(stderr, "Not enough information: changeable attributes required.\n");
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exit(-1);
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}
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if (parms_rta->rta_len > RTA_LENGTH(0)) {
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addattr_l(&req.n, sizeof(req), NDTA_PARMS, RTA_DATA(parms_rta),
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RTA_PAYLOAD(parms_rta));
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}
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if (rtnl_talk(&rth, &req.n, NULL, 0) < 0)
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exit(2);
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return 0;
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}
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static const char *ntable_strtime_delta(__u32 msec)
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{
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static char str[32];
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struct timeval now;
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time_t t;
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struct tm *tp;
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if (msec == 0)
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goto error;
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memset(&now, 0, sizeof(now));
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if (gettimeofday(&now, NULL) < 0) {
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perror("gettimeofday");
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goto error;
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}
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t = now.tv_sec - (msec / 1000);
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tp = localtime(&t);
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if (!tp)
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goto error;
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strftime(str, sizeof(str), "%Y-%m-%d %T", tp);
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return str;
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error:
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strcpy(str, "(error)");
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return str;
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}
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int print_ntable(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
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{
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FILE *fp = (FILE*)arg;
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struct ndtmsg *ndtm = NLMSG_DATA(n);
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int len = n->nlmsg_len;
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struct rtattr *tb[NDTA_MAX+1];
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struct rtattr *tpb[NDTPA_MAX+1];
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int ret;
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if (n->nlmsg_type != RTM_NEWNEIGHTBL) {
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fprintf(stderr, "Not NEIGHTBL: %08x %08x %08x\n",
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n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
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return 0;
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}
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len -= NLMSG_LENGTH(sizeof(*ndtm));
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if (len < 0) {
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fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
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return -1;
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}
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if (preferred_family && preferred_family != ndtm->ndtm_family)
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return 0;
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parse_rtattr(tb, NDTA_MAX, NDTA_RTA(ndtm),
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n->nlmsg_len - NLMSG_LENGTH(sizeof(*ndtm)));
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if (tb[NDTA_NAME]) {
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const char *name = rta_getattr_str(tb[NDTA_NAME]);
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if (strlen(filter.name) > 0 && strcmp(filter.name, name))
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return 0;
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}
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if (tb[NDTA_PARMS]) {
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parse_rtattr(tpb, NDTPA_MAX, RTA_DATA(tb[NDTA_PARMS]),
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RTA_PAYLOAD(tb[NDTA_PARMS]));
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if (tpb[NDTPA_IFINDEX]) {
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__u32 ifindex = rta_getattr_u32(tpb[NDTPA_IFINDEX]);
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if (filter.index && filter.index != ifindex)
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return 0;
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} else {
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if (filter.index && filter.index != NONE_DEV)
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return 0;
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}
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}
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if (ndtm->ndtm_family == AF_INET)
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fprintf(fp, "inet ");
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else if (ndtm->ndtm_family == AF_INET6)
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fprintf(fp, "inet6 ");
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else if (ndtm->ndtm_family == AF_DECnet)
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fprintf(fp, "dnet ");
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else
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fprintf(fp, "(%d) ", ndtm->ndtm_family);
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if (tb[NDTA_NAME]) {
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const char *name = rta_getattr_str(tb[NDTA_NAME]);
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fprintf(fp, "%s ", name);
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}
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fprintf(fp, "%s", _SL_);
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ret = (tb[NDTA_THRESH1] || tb[NDTA_THRESH2] || tb[NDTA_THRESH3] ||
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tb[NDTA_GC_INTERVAL]);
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if (ret)
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fprintf(fp, " ");
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if (tb[NDTA_THRESH1]) {
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__u32 thresh1 = rta_getattr_u32(tb[NDTA_THRESH1]);
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fprintf(fp, "thresh1 %u ", thresh1);
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}
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if (tb[NDTA_THRESH2]) {
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__u32 thresh2 = rta_getattr_u32(tb[NDTA_THRESH2]);
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fprintf(fp, "thresh2 %u ", thresh2);
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}
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if (tb[NDTA_THRESH3]) {
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__u32 thresh3 = rta_getattr_u32(tb[NDTA_THRESH3]);
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fprintf(fp, "thresh3 %u ", thresh3);
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}
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if (tb[NDTA_GC_INTERVAL]) {
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unsigned long long gc_int = rta_getattr_u64(tb[NDTA_GC_INTERVAL]);
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fprintf(fp, "gc_int %llu ", gc_int);
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}
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if (ret)
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fprintf(fp, "%s", _SL_);
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if (tb[NDTA_CONFIG] && show_stats) {
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struct ndt_config *ndtc = RTA_DATA(tb[NDTA_CONFIG]);
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fprintf(fp, " ");
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fprintf(fp, "config ");
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fprintf(fp, "key_len %u ", ndtc->ndtc_key_len);
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fprintf(fp, "entry_size %u ", ndtc->ndtc_entry_size);
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fprintf(fp, "entries %u ", ndtc->ndtc_entries);
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fprintf(fp, "%s", _SL_);
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fprintf(fp, " ");
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fprintf(fp, "last_flush %s ",
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ntable_strtime_delta(ndtc->ndtc_last_flush));
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fprintf(fp, "last_rand %s ",
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ntable_strtime_delta(ndtc->ndtc_last_rand));
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fprintf(fp, "%s", _SL_);
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fprintf(fp, " ");
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fprintf(fp, "hash_rnd %u ", ndtc->ndtc_hash_rnd);
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fprintf(fp, "hash_mask %08x ", ndtc->ndtc_hash_mask);
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fprintf(fp, "hash_chain_gc %u ", ndtc->ndtc_hash_chain_gc);
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fprintf(fp, "proxy_qlen %u ", ndtc->ndtc_proxy_qlen);
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fprintf(fp, "%s", _SL_);
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}
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if (tb[NDTA_PARMS]) {
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if (tpb[NDTPA_IFINDEX]) {
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__u32 ifindex = rta_getattr_u32(tpb[NDTPA_IFINDEX]);
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fprintf(fp, " ");
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fprintf(fp, "dev %s ", ll_index_to_name(ifindex));
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fprintf(fp, "%s", _SL_);
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}
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fprintf(fp, " ");
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if (tpb[NDTPA_REFCNT]) {
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__u32 refcnt = rta_getattr_u32(tpb[NDTPA_REFCNT]);
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fprintf(fp, "refcnt %u ", refcnt);
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}
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if (tpb[NDTPA_REACHABLE_TIME]) {
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unsigned long long reachable = rta_getattr_u64(tpb[NDTPA_REACHABLE_TIME]);
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fprintf(fp, "reachable %llu ", reachable);
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}
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if (tpb[NDTPA_BASE_REACHABLE_TIME]) {
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unsigned long long breachable = rta_getattr_u64(tpb[NDTPA_BASE_REACHABLE_TIME]);
|
|
fprintf(fp, "base_reachable %llu ", breachable);
|
|
}
|
|
if (tpb[NDTPA_RETRANS_TIME]) {
|
|
unsigned long long retrans = rta_getattr_u64(tpb[NDTPA_RETRANS_TIME]);
|
|
fprintf(fp, "retrans %llu ", retrans);
|
|
}
|
|
|
|
fprintf(fp, "%s", _SL_);
|
|
|
|
fprintf(fp, " ");
|
|
|
|
if (tpb[NDTPA_GC_STALETIME]) {
|
|
unsigned long long gc_stale = rta_getattr_u64(tpb[NDTPA_GC_STALETIME]);
|
|
fprintf(fp, "gc_stale %llu ", gc_stale);
|
|
}
|
|
if (tpb[NDTPA_DELAY_PROBE_TIME]) {
|
|
unsigned long long delay_probe = rta_getattr_u64(tpb[NDTPA_DELAY_PROBE_TIME]);
|
|
fprintf(fp, "delay_probe %llu ", delay_probe);
|
|
}
|
|
if (tpb[NDTPA_QUEUE_LEN]) {
|
|
__u32 queue = rta_getattr_u32(tpb[NDTPA_QUEUE_LEN]);
|
|
fprintf(fp, "queue %u ", queue);
|
|
}
|
|
|
|
fprintf(fp, "%s", _SL_);
|
|
|
|
fprintf(fp, " ");
|
|
|
|
if (tpb[NDTPA_APP_PROBES]) {
|
|
__u32 aprobe = rta_getattr_u32(tpb[NDTPA_APP_PROBES]);
|
|
fprintf(fp, "app_probes %u ", aprobe);
|
|
}
|
|
if (tpb[NDTPA_UCAST_PROBES]) {
|
|
__u32 uprobe = rta_getattr_u32(tpb[NDTPA_UCAST_PROBES]);
|
|
fprintf(fp, "ucast_probes %u ", uprobe);
|
|
}
|
|
if (tpb[NDTPA_MCAST_PROBES]) {
|
|
__u32 mprobe = rta_getattr_u32(tpb[NDTPA_MCAST_PROBES]);
|
|
fprintf(fp, "mcast_probes %u ", mprobe);
|
|
}
|
|
|
|
fprintf(fp, "%s", _SL_);
|
|
|
|
fprintf(fp, " ");
|
|
|
|
if (tpb[NDTPA_ANYCAST_DELAY]) {
|
|
unsigned long long anycast_delay = rta_getattr_u64(tpb[NDTPA_ANYCAST_DELAY]);
|
|
fprintf(fp, "anycast_delay %llu ", anycast_delay);
|
|
}
|
|
if (tpb[NDTPA_PROXY_DELAY]) {
|
|
unsigned long long proxy_delay = rta_getattr_u64(tpb[NDTPA_PROXY_DELAY]);
|
|
fprintf(fp, "proxy_delay %llu ", proxy_delay);
|
|
}
|
|
if (tpb[NDTPA_PROXY_QLEN]) {
|
|
__u32 pqueue = rta_getattr_u32(tpb[NDTPA_PROXY_QLEN]);
|
|
fprintf(fp, "proxy_queue %u ", pqueue);
|
|
}
|
|
if (tpb[NDTPA_LOCKTIME]) {
|
|
unsigned long long locktime = rta_getattr_u64(tpb[NDTPA_LOCKTIME]);
|
|
fprintf(fp, "locktime %llu ", locktime);
|
|
}
|
|
|
|
fprintf(fp, "%s", _SL_);
|
|
}
|
|
|
|
if (tb[NDTA_STATS] && show_stats) {
|
|
struct ndt_stats *ndts = RTA_DATA(tb[NDTA_STATS]);
|
|
|
|
fprintf(fp, " ");
|
|
fprintf(fp, "stats ");
|
|
|
|
fprintf(fp, "allocs %llu ",
|
|
(unsigned long long) ndts->ndts_allocs);
|
|
fprintf(fp, "destroys %llu ",
|
|
(unsigned long long) ndts->ndts_destroys);
|
|
fprintf(fp, "hash_grows %llu ",
|
|
(unsigned long long) ndts->ndts_hash_grows);
|
|
|
|
fprintf(fp, "%s", _SL_);
|
|
fprintf(fp, " ");
|
|
|
|
fprintf(fp, "res_failed %llu ",
|
|
(unsigned long long) ndts->ndts_res_failed);
|
|
fprintf(fp, "lookups %llu ",
|
|
(unsigned long long) ndts->ndts_lookups);
|
|
fprintf(fp, "hits %llu ",
|
|
(unsigned long long) ndts->ndts_hits);
|
|
|
|
fprintf(fp, "%s", _SL_);
|
|
fprintf(fp, " ");
|
|
|
|
fprintf(fp, "rcv_probes_mcast %llu ",
|
|
(unsigned long long) ndts->ndts_rcv_probes_mcast);
|
|
fprintf(fp, "rcv_probes_ucast %llu ",
|
|
(unsigned long long) ndts->ndts_rcv_probes_ucast);
|
|
|
|
fprintf(fp, "%s", _SL_);
|
|
fprintf(fp, " ");
|
|
|
|
fprintf(fp, "periodic_gc_runs %llu ",
|
|
(unsigned long long) ndts->ndts_periodic_gc_runs);
|
|
fprintf(fp, "forced_gc_runs %llu ",
|
|
(unsigned long long) ndts->ndts_forced_gc_runs);
|
|
|
|
fprintf(fp, "%s", _SL_);
|
|
}
|
|
|
|
fprintf(fp, "\n");
|
|
|
|
fflush(fp);
|
|
return 0;
|
|
}
|
|
|
|
void ipntable_reset_filter(void)
|
|
{
|
|
memset(&filter, 0, sizeof(filter));
|
|
}
|
|
|
|
static int ipntable_show(int argc, char **argv)
|
|
{
|
|
ipntable_reset_filter();
|
|
|
|
filter.family = preferred_family;
|
|
|
|
while (argc > 0) {
|
|
if (strcmp(*argv, "dev") == 0) {
|
|
NEXT_ARG();
|
|
|
|
if (strcmp("none", *argv) == 0)
|
|
filter.index = NONE_DEV;
|
|
else if ((filter.index = ll_name_to_index(*argv)) == 0)
|
|
invarg("\"DEV\" is invalid", *argv);
|
|
} else if (strcmp(*argv, "name") == 0) {
|
|
NEXT_ARG();
|
|
|
|
strncpy(filter.name, *argv, sizeof(filter.name));
|
|
} else
|
|
invarg("unknown", *argv);
|
|
|
|
argc--; argv++;
|
|
}
|
|
|
|
if (rtnl_wilddump_request(&rth, preferred_family, RTM_GETNEIGHTBL) < 0) {
|
|
perror("Cannot send dump request");
|
|
exit(1);
|
|
}
|
|
|
|
if (rtnl_dump_filter(&rth, print_ntable, stdout) < 0) {
|
|
fprintf(stderr, "Dump terminated\n");
|
|
exit(1);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int do_ipntable(int argc, char **argv)
|
|
{
|
|
ll_init_map(&rth);
|
|
|
|
if (argc > 0) {
|
|
if (matches(*argv, "change") == 0 ||
|
|
matches(*argv, "chg") == 0)
|
|
return ipntable_modify(RTM_SETNEIGHTBL,
|
|
NLM_F_REPLACE,
|
|
argc-1, argv+1);
|
|
if (matches(*argv, "show") == 0 ||
|
|
matches(*argv, "lst") == 0 ||
|
|
matches(*argv, "list") == 0)
|
|
return ipntable_show(argc-1, argv+1);
|
|
if (matches(*argv, "help") == 0)
|
|
usage();
|
|
} else
|
|
return ipntable_show(0, NULL);
|
|
|
|
fprintf(stderr, "Command \"%s\" is unknown, try \"ip ntable help\".\n", *argv);
|
|
exit(-1);
|
|
}
|