+++ /dev/null
-/*
- * iproute.c "ip route".
- *
- * 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>
- *
- *
- * Changes:
- *
- * Rani Assaf <rani@magic.metawire.com> 980929: resolve addresses
- * Kunihiro Ishiguro <kunihiro@zebra.org> 001102: rtnh_ifindex was not initialized
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <syslog.h>
-#include <fcntl.h>
-#include <string.h>
-#include <time.h>
-#include <sys/time.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <netinet/ip.h>
-#include <arpa/inet.h>
-#include <linux/in_route.h>
-
-#include "rt_names.h"
-#include "utils.h"
-#include "ip_common.h"
-
-#ifndef RTAX_RTTVAR
-#define RTAX_RTTVAR RTAX_HOPS
-#endif
-
-
-static void usage(void) __attribute__((noreturn));
-
-static void usage(void)
-{
- fprintf(stderr, "Usage: ip route { list | flush } SELECTOR\n");
- fprintf(stderr, " ip route get ADDRESS [ from ADDRESS iif STRING ]\n");
- fprintf(stderr, " [ oif STRING ] [ tos TOS ]\n");
- fprintf(stderr, " ip route { add | del | change | append | replace | monitor } ROUTE\n");
- fprintf(stderr, "SELECTOR := [ root PREFIX ] [ match PREFIX ] [ exact PREFIX ]\n");
- fprintf(stderr, " [ table TABLE_ID ] [ proto RTPROTO ]\n");
- fprintf(stderr, " [ type TYPE ] [ scope SCOPE ]\n");
- fprintf(stderr, "ROUTE := NODE_SPEC [ INFO_SPEC ]\n");
- fprintf(stderr, "NODE_SPEC := [ TYPE ] PREFIX [ tos TOS ]\n");
- fprintf(stderr, " [ table TABLE_ID ] [ proto RTPROTO ]\n");
- fprintf(stderr, " [ scope SCOPE ] [ metric METRIC ]\n");
- fprintf(stderr, "INFO_SPEC := NH OPTIONS FLAGS [ nexthop NH ]...\n");
- fprintf(stderr, "NH := [ via ADDRESS ] [ dev STRING ] [ weight NUMBER ] NHFLAGS\n");
- fprintf(stderr, "OPTIONS := FLAGS [ mtu NUMBER ] [ advmss NUMBER ]\n");
- fprintf(stderr, " [ rtt NUMBER ] [ rttvar NUMBER ]\n");
- fprintf(stderr, " [ window NUMBER] [ cwnd NUMBER ] [ ssthresh NUMBER ]\n");
- fprintf(stderr, " [ realms REALM ]\n");
- fprintf(stderr, "TYPE := [ unicast | local | broadcast | multicast | throw |\n");
- fprintf(stderr, " unreachable | prohibit | blackhole | nat ]\n");
- fprintf(stderr, "TABLE_ID := [ local | main | default | all | NUMBER ]\n");
- fprintf(stderr, "SCOPE := [ host | link | global | NUMBER ]\n");
- fprintf(stderr, "FLAGS := [ equalize ]\n");
- fprintf(stderr, "NHFLAGS := [ onlink | pervasive ]\n");
- fprintf(stderr, "RTPROTO := [ kernel | boot | static | NUMBER ]\n");
- exit(-1);
-}
-
-
-static struct
-{
- int tb;
- int flushed;
- char *flushb;
- int flushp;
- int flushe;
- struct rtnl_handle *rth;
- int protocol, protocolmask;
- int scope, scopemask;
- int type, typemask;
- int tos, tosmask;
- int iif, iifmask;
- int oif, oifmask;
- int realm, realmmask;
- inet_prefix rprefsrc;
- inet_prefix rvia;
- inet_prefix rdst;
- inet_prefix mdst;
- inet_prefix rsrc;
- inet_prefix msrc;
-} filter;
-
-static int flush_update(void)
-{
- if (rtnl_send(filter.rth, filter.flushb, filter.flushp) < 0) {
- perror("Failed to send flush request\n");
- return -1;
- }
- filter.flushp = 0;
- return 0;
-}
-
-int print_route(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
-{
- FILE *fp = (FILE*)arg;
- struct rtmsg *r = NLMSG_DATA(n);
- int len = n->nlmsg_len;
- struct rtattr * tb[RTA_MAX+1];
- char abuf[256];
- inet_prefix dst;
- inet_prefix src;
- inet_prefix prefsrc;
- inet_prefix via;
- int host_len = -1;
- SPRINT_BUF(b1);
-
-
- if (n->nlmsg_type != RTM_NEWROUTE && n->nlmsg_type != RTM_DELROUTE) {
- fprintf(stderr, "Not a route: %08x %08x %08x\n",
- n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
- return 0;
- }
- if (filter.flushb && n->nlmsg_type != RTM_NEWROUTE)
- return 0;
- len -= NLMSG_LENGTH(sizeof(*r));
- if (len < 0) {
- fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
- return -1;
- }
-
- if (r->rtm_family == AF_INET6)
- host_len = 128;
- else if (r->rtm_family == AF_INET)
- host_len = 32;
- else if (r->rtm_family == AF_DECnet)
- host_len = 16;
- else if (r->rtm_family == AF_IPX)
- host_len = 80;
-
- if (r->rtm_family == AF_INET6) {
- if (filter.tb) {
- if (filter.tb < 0) {
- if (!(r->rtm_flags&RTM_F_CLONED))
- return 0;
- } else {
- if (r->rtm_flags&RTM_F_CLONED)
- return 0;
- if (filter.tb == RT_TABLE_LOCAL) {
- if (r->rtm_type != RTN_LOCAL)
- return 0;
- } else if (filter.tb == RT_TABLE_MAIN) {
- if (r->rtm_type == RTN_LOCAL)
- return 0;
- } else {
- return 0;
- }
- }
- }
- } else {
- if (filter.tb > 0 && filter.tb != r->rtm_table)
- return 0;
- }
- if ((filter.protocol^r->rtm_protocol)&filter.protocolmask)
- return 0;
- if ((filter.scope^r->rtm_scope)&filter.scopemask)
- return 0;
- if ((filter.type^r->rtm_type)&filter.typemask)
- return 0;
- if ((filter.tos^r->rtm_tos)&filter.tosmask)
- return 0;
- if (filter.rdst.family &&
- (r->rtm_family != filter.rdst.family || filter.rdst.bitlen > r->rtm_dst_len))
- return 0;
- if (filter.mdst.family &&
- (r->rtm_family != filter.mdst.family ||
- (filter.mdst.bitlen >= 0 && filter.mdst.bitlen < r->rtm_dst_len)))
- return 0;
- if (filter.rsrc.family &&
- (r->rtm_family != filter.rsrc.family || filter.rsrc.bitlen > r->rtm_src_len))
- return 0;
- if (filter.msrc.family &&
- (r->rtm_family != filter.msrc.family ||
- (filter.msrc.bitlen >= 0 && filter.msrc.bitlen < r->rtm_src_len)))
- return 0;
- if (filter.rvia.family && r->rtm_family != filter.rvia.family)
- return 0;
- if (filter.rprefsrc.family && r->rtm_family != filter.rprefsrc.family)
- return 0;
-
- parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
-
- memset(&dst, 0, sizeof(dst));
- dst.family = r->rtm_family;
- if (tb[RTA_DST])
- memcpy(&dst.data, RTA_DATA(tb[RTA_DST]), (r->rtm_dst_len+7)/8);
- if (filter.rsrc.family || filter.msrc.family) {
- memset(&src, 0, sizeof(src));
- src.family = r->rtm_family;
- if (tb[RTA_SRC])
- memcpy(&src.data, RTA_DATA(tb[RTA_SRC]), (r->rtm_src_len+7)/8);
- }
- if (filter.rvia.bitlen>0) {
- memset(&via, 0, sizeof(via));
- via.family = r->rtm_family;
- if (tb[RTA_GATEWAY])
- memcpy(&via.data, RTA_DATA(tb[RTA_GATEWAY]), host_len);
- }
- if (filter.rprefsrc.bitlen>0) {
- memset(&prefsrc, 0, sizeof(prefsrc));
- prefsrc.family = r->rtm_family;
- if (tb[RTA_PREFSRC])
- memcpy(&prefsrc.data, RTA_DATA(tb[RTA_PREFSRC]), host_len);
- }
-
- if (filter.rdst.family && inet_addr_match(&dst, &filter.rdst, filter.rdst.bitlen))
- return 0;
- if (filter.mdst.family && filter.mdst.bitlen >= 0 &&
- inet_addr_match(&dst, &filter.mdst, r->rtm_dst_len))
- return 0;
-
- if (filter.rsrc.family && inet_addr_match(&src, &filter.rsrc, filter.rsrc.bitlen))
- return 0;
- if (filter.msrc.family && filter.msrc.bitlen >= 0 &&
- inet_addr_match(&src, &filter.msrc, r->rtm_src_len))
- return 0;
-
- if (filter.rvia.family && inet_addr_match(&via, &filter.rvia, filter.rvia.bitlen))
- return 0;
- if (filter.rprefsrc.family && inet_addr_match(&prefsrc, &filter.rprefsrc, filter.rprefsrc.bitlen))
- return 0;
- if (filter.realmmask) {
- __u32 realms = 0;
- if (tb[RTA_FLOW])
- realms = *(__u32*)RTA_DATA(tb[RTA_FLOW]);
- if ((realms^filter.realm)&filter.realmmask)
- return 0;
- }
- if (filter.iifmask) {
- int iif = 0;
- if (tb[RTA_IIF])
- iif = *(int*)RTA_DATA(tb[RTA_IIF]);
- if ((iif^filter.iif)&filter.iifmask)
- return 0;
- }
- if (filter.oifmask) {
- int oif = 0;
- if (tb[RTA_OIF])
- oif = *(int*)RTA_DATA(tb[RTA_OIF]);
- if ((oif^filter.oif)&filter.oifmask)
- return 0;
- }
- if (filter.flushb &&
- r->rtm_family == AF_INET6 &&
- r->rtm_dst_len == 0 &&
- r->rtm_type == RTN_UNREACHABLE &&
- tb[RTA_PRIORITY] &&
- *(int*)RTA_DATA(tb[RTA_PRIORITY]) == -1)
- 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_DELROUTE;
- fn->nlmsg_flags = NLM_F_REQUEST;
- fn->nlmsg_seq = ++filter.rth->seq;
- filter.flushp = (((char*)fn) + n->nlmsg_len) - filter.flushb;
- filter.flushed++;
- if (show_stats < 2)
- return 0;
- }
-
- if (n->nlmsg_type == RTM_DELROUTE)
- fprintf(fp, "Deleted ");
- if (r->rtm_type != RTN_UNICAST && !filter.type)
- fprintf(fp, "%s ", rtnl_rtntype_n2a(r->rtm_type, b1, sizeof(b1)));
-
- if (tb[RTA_DST]) {
- if (r->rtm_dst_len != host_len) {
- fprintf(fp, "%s/%u ", rt_addr_n2a(r->rtm_family,
- RTA_PAYLOAD(tb[RTA_DST]),
- RTA_DATA(tb[RTA_DST]),
- abuf, sizeof(abuf)),
- r->rtm_dst_len
- );
- } else {
- fprintf(fp, "%s ", format_host(r->rtm_family,
- RTA_PAYLOAD(tb[RTA_DST]),
- RTA_DATA(tb[RTA_DST]),
- abuf, sizeof(abuf))
- );
- }
- } else if (r->rtm_dst_len) {
- fprintf(fp, "0/%d ", r->rtm_dst_len);
- } else {
- fprintf(fp, "default ");
- }
- if (tb[RTA_SRC]) {
- if (r->rtm_src_len != host_len) {
- fprintf(fp, "from %s/%u ", rt_addr_n2a(r->rtm_family,
- RTA_PAYLOAD(tb[RTA_SRC]),
- RTA_DATA(tb[RTA_SRC]),
- abuf, sizeof(abuf)),
- r->rtm_src_len
- );
- } else {
- fprintf(fp, "from %s ", format_host(r->rtm_family,
- RTA_PAYLOAD(tb[RTA_SRC]),
- RTA_DATA(tb[RTA_SRC]),
- abuf, sizeof(abuf))
- );
- }
- } else if (r->rtm_src_len) {
- fprintf(fp, "from 0/%u ", r->rtm_src_len);
- }
- if (r->rtm_tos && filter.tosmask != -1) {
- SPRINT_BUF(b1);
- fprintf(fp, "tos %s ", rtnl_dsfield_n2a(r->rtm_tos, b1, sizeof(b1)));
- }
- if (tb[RTA_GATEWAY] && filter.rvia.bitlen != host_len) {
- fprintf(fp, "via %s ",
- format_host(r->rtm_family,
- RTA_PAYLOAD(tb[RTA_GATEWAY]),
- RTA_DATA(tb[RTA_GATEWAY]),
- abuf, sizeof(abuf)));
- }
- if (tb[RTA_OIF] && filter.oifmask != -1)
- fprintf(fp, "dev %s ", ll_index_to_name(*(int*)RTA_DATA(tb[RTA_OIF])));
-
- if (!(r->rtm_flags&RTM_F_CLONED)) {
- if (r->rtm_table != RT_TABLE_MAIN && !filter.tb)
- fprintf(fp, " table %s ", rtnl_rttable_n2a(r->rtm_table, b1, sizeof(b1)));
- if (r->rtm_protocol != RTPROT_BOOT && filter.protocolmask != -1)
- fprintf(fp, " proto %s ", rtnl_rtprot_n2a(r->rtm_protocol, b1, sizeof(b1)));
- if (r->rtm_scope != RT_SCOPE_UNIVERSE && filter.scopemask != -1)
- fprintf(fp, " scope %s ", rtnl_rtscope_n2a(r->rtm_scope, b1, sizeof(b1)));
- }
- if (tb[RTA_PREFSRC] && filter.rprefsrc.bitlen != host_len) {
- /* Do not use format_host(). It is our local addr
- and symbolic name will not be useful.
- */
- fprintf(fp, " src %s ",
- rt_addr_n2a(r->rtm_family,
- RTA_PAYLOAD(tb[RTA_PREFSRC]),
- RTA_DATA(tb[RTA_PREFSRC]),
- abuf, sizeof(abuf)));
- }
- if (tb[RTA_PRIORITY])
- fprintf(fp, " metric %d ", *(__u32*)RTA_DATA(tb[RTA_PRIORITY]));
- if (r->rtm_flags & RTNH_F_DEAD)
- fprintf(fp, "dead ");
- if (r->rtm_flags & RTNH_F_ONLINK)
- fprintf(fp, "onlink ");
- if (r->rtm_flags & RTNH_F_PERVASIVE)
- fprintf(fp, "pervasive ");
- if (r->rtm_flags & RTM_F_EQUALIZE)
- fprintf(fp, "equalize ");
- if (r->rtm_flags & RTM_F_NOTIFY)
- fprintf(fp, "notify ");
-
- if (tb[RTA_FLOW] && filter.realmmask != ~0U) {
- __u32 to = *(__u32*)RTA_DATA(tb[RTA_FLOW]);
- __u32 from = to>>16;
- to &= 0xFFFF;
- fprintf(fp, "realm%s ", from ? "s" : "");
- if (from) {
- fprintf(fp, "%s/",
- rtnl_rtrealm_n2a(from, b1, sizeof(b1)));
- }
- fprintf(fp, "%s ",
- rtnl_rtrealm_n2a(to, b1, sizeof(b1)));
- }
- if ((r->rtm_flags&RTM_F_CLONED) && r->rtm_family == AF_INET) {
- __u32 flags = r->rtm_flags&~0xFFFF;
- int first = 1;
-
- fprintf(fp, "%s cache ", _SL_);
-
-#define PRTFL(fl,flname) if (flags&RTCF_##fl) { \
- flags &= ~RTCF_##fl; \
- fprintf(fp, "%s" flname "%s", first ? "<" : "", flags ? "," : "> "); \
- first = 0; }
- PRTFL(LOCAL, "local");
- PRTFL(REJECT, "reject");
- PRTFL(MULTICAST, "mc");
- PRTFL(BROADCAST, "brd");
- PRTFL(DNAT, "dst-nat");
- PRTFL(SNAT, "src-nat");
- PRTFL(MASQ, "masq");
- PRTFL(DIRECTDST, "dst-direct");
- PRTFL(DIRECTSRC, "src-direct");
- PRTFL(REDIRECTED, "redirected");
- PRTFL(DOREDIRECT, "redirect");
- PRTFL(FAST, "fastroute");
- PRTFL(NOTIFY, "notify");
- PRTFL(TPROXY, "proxy");
-#ifdef RTCF_EQUALIZE
- PRTFL(EQUALIZE, "equalize");
-#endif
- if (flags)
- fprintf(fp, "%s%x> ", first ? "<" : "", flags);
- if (tb[RTA_CACHEINFO]) {
- struct rta_cacheinfo *ci = RTA_DATA(tb[RTA_CACHEINFO]);
- static int hz;
- if (!hz)
- hz = get_user_hz();
- if (ci->rta_expires != 0)
- fprintf(fp, " expires %dsec", ci->rta_expires/hz);
- if (ci->rta_error != 0)
- fprintf(fp, " error %d", ci->rta_error);
- if (show_stats) {
- if (ci->rta_clntref)
- fprintf(fp, " users %d", ci->rta_clntref);
- if (ci->rta_used != 0)
- fprintf(fp, " used %d", ci->rta_used);
- if (ci->rta_lastuse != 0)
- fprintf(fp, " age %dsec", ci->rta_lastuse/hz);
- }
-#ifdef RTNETLINK_HAVE_PEERINFO
- if (ci->rta_id)
- fprintf(fp, " ipid 0x%04x", ci->rta_id);
- if (ci->rta_ts || ci->rta_tsage)
- fprintf(fp, " ts 0x%x tsage %dsec", ci->rta_ts, ci->rta_tsage);
-#endif
- }
- } else if (r->rtm_family == AF_INET6) {
- struct rta_cacheinfo *ci = NULL;
- if (tb[RTA_CACHEINFO])
- ci = RTA_DATA(tb[RTA_CACHEINFO]);
- if ((r->rtm_flags & RTM_F_CLONED) || (ci && ci->rta_expires)) {
- static int hz;
- if (!hz)
- hz = get_user_hz();
- if (r->rtm_flags & RTM_F_CLONED)
- fprintf(fp, "%s cache ", _SL_);
- if (ci->rta_expires)
- fprintf(fp, " expires %dsec", ci->rta_expires/hz);
- if (ci->rta_error != 0)
- fprintf(fp, " error %d", ci->rta_error);
- if (show_stats) {
- if (ci->rta_clntref)
- fprintf(fp, " users %d", ci->rta_clntref);
- if (ci->rta_used != 0)
- fprintf(fp, " used %d", ci->rta_used);
- if (ci->rta_lastuse != 0)
- fprintf(fp, " age %dsec", ci->rta_lastuse/hz);
- }
- } else if (ci) {
- if (ci->rta_error != 0)
- fprintf(fp, " error %d", ci->rta_error);
- }
- }
- if (tb[RTA_METRICS]) {
- int i;
- unsigned mxlock = 0;
- struct rtattr *mxrta[RTAX_MAX+1];
-
- parse_rtattr(mxrta, RTAX_MAX, RTA_DATA(tb[RTA_METRICS]),
- RTA_PAYLOAD(tb[RTA_METRICS]));
- if (mxrta[RTAX_LOCK])
- mxlock = *(unsigned*)RTA_DATA(mxrta[RTAX_LOCK]);
-
- for (i=2; i<=RTAX_MAX; i++) {
- static char *mx_names[] =
- {
- "mtu",
- "window",
- "rtt",
- "rttvar",
- "ssthresh",
- "cwnd",
- "advmss",
- "reordering",
- };
- static int hz;
- if (mxrta[i] == NULL)
- continue;
- if (!hz)
- hz = get_hz();
- if (i-2 < sizeof(mx_names)/sizeof(char*))
- fprintf(fp, " %s", mx_names[i-2]);
- else
- fprintf(fp, " metric %d", i);
- if (mxlock & (1<<i))
- fprintf(fp, " lock");
-
- if (i != RTAX_RTT && i != RTAX_RTTVAR)
- fprintf(fp, " %u", *(unsigned*)RTA_DATA(mxrta[i]));
- else {
- unsigned val = *(unsigned*)RTA_DATA(mxrta[i]);
-
- val *= 1000;
- if (i == RTAX_RTT)
- val /= 8;
- else
- val /= 4;
- if (val >= hz)
- fprintf(fp, " %ums", val/hz);
- else
- fprintf(fp, " %.2fms", (float)val/hz);
- }
- }
- }
- if (tb[RTA_IIF] && filter.iifmask != -1) {
- fprintf(fp, " iif %s", ll_index_to_name(*(int*)RTA_DATA(tb[RTA_IIF])));
- }
- if (tb[RTA_MULTIPATH]) {
- struct rtnexthop *nh = RTA_DATA(tb[RTA_MULTIPATH]);
- int first = 0;
-
- len = RTA_PAYLOAD(tb[RTA_MULTIPATH]);
-
- for (;;) {
- if (len < sizeof(*nh))
- break;
- if (nh->rtnh_len > len)
- break;
- if (r->rtm_flags&RTM_F_CLONED && r->rtm_type == RTN_MULTICAST) {
- if (first)
- fprintf(fp, " Oifs:");
- else
- fprintf(fp, " ");
- } else
- fprintf(fp, "%s\tnexthop", _SL_);
- if (nh->rtnh_len > sizeof(*nh)) {
- parse_rtattr(tb, RTA_MAX, RTNH_DATA(nh), nh->rtnh_len - sizeof(*nh));
- if (tb[RTA_GATEWAY]) {
- fprintf(fp, " via %s ",
- format_host(r->rtm_family,
- RTA_PAYLOAD(tb[RTA_GATEWAY]),
- RTA_DATA(tb[RTA_GATEWAY]),
- abuf, sizeof(abuf)));
- }
- }
- if (r->rtm_flags&RTM_F_CLONED && r->rtm_type == RTN_MULTICAST) {
- fprintf(fp, " %s", ll_index_to_name(nh->rtnh_ifindex));
- if (nh->rtnh_hops != 1)
- fprintf(fp, "(ttl>%d)", nh->rtnh_hops);
- } else {
- fprintf(fp, " dev %s", ll_index_to_name(nh->rtnh_ifindex));
- fprintf(fp, " weight %d", nh->rtnh_hops+1);
- }
- if (nh->rtnh_flags & RTNH_F_DEAD)
- fprintf(fp, " dead");
- if (nh->rtnh_flags & RTNH_F_ONLINK)
- fprintf(fp, " onlink");
- if (nh->rtnh_flags & RTNH_F_PERVASIVE)
- fprintf(fp, " pervasive");
- len -= NLMSG_ALIGN(nh->rtnh_len);
- nh = RTNH_NEXT(nh);
- }
- }
- fprintf(fp, "\n");
- fflush(fp);
- return 0;
-}
-
-
-int parse_one_nh(struct rtattr *rta, struct rtnexthop *rtnh, int *argcp, char ***argvp)
-{
- int argc = *argcp;
- char **argv = *argvp;
-
- while (++argv, --argc > 0) {
- if (strcmp(*argv, "via") == 0) {
- NEXT_ARG();
- rta_addattr32(rta, 4096, RTA_GATEWAY, get_addr32(*argv));
- rtnh->rtnh_len += sizeof(struct rtattr) + 4;
- } else if (strcmp(*argv, "dev") == 0) {
- NEXT_ARG();
- if ((rtnh->rtnh_ifindex = ll_name_to_index(*argv)) == 0) {
- fprintf(stderr, "Cannot find device \"%s\"\n", *argv);
- exit(1);
- }
- } else if (strcmp(*argv, "weight") == 0) {
- unsigned w;
- NEXT_ARG();
- if (get_unsigned(&w, *argv, 0) || w == 0 || w > 256)
- invarg("\"weight\" is invalid\n", *argv);
- rtnh->rtnh_hops = w - 1;
- } else if (strcmp(*argv, "onlink") == 0) {
- rtnh->rtnh_flags |= RTNH_F_ONLINK;
- } else
- break;
- }
- *argcp = argc;
- *argvp = argv;
- return 0;
-}
-
-int parse_nexthops(struct nlmsghdr *n, struct rtmsg *r, int argc, char **argv)
-{
- char buf[1024];
- struct rtattr *rta = (void*)buf;
- struct rtnexthop *rtnh;
-
- rta->rta_type = RTA_MULTIPATH;
- rta->rta_len = RTA_LENGTH(0);
- rtnh = RTA_DATA(rta);
-
- while (argc > 0) {
- if (strcmp(*argv, "nexthop") != 0) {
- fprintf(stderr, "Error: \"nexthop\" or end of line is expected instead of \"%s\"\n", *argv);
- exit(-1);
- }
- if (argc <= 1) {
- fprintf(stderr, "Error: unexpected end of line after \"nexthop\"\n");
- exit(-1);
- }
- memset(rtnh, 0, sizeof(*rtnh));
- rtnh->rtnh_len = sizeof(*rtnh);
- rta->rta_len += rtnh->rtnh_len;
- parse_one_nh(rta, rtnh, &argc, &argv);
- rtnh = RTNH_NEXT(rtnh);
- }
-
- if (rta->rta_len > RTA_LENGTH(0))
- addattr_l(n, 1024, RTA_MULTIPATH, RTA_DATA(rta), RTA_PAYLOAD(rta));
- return 0;
-}
-
-
-int iproute_modify(int cmd, unsigned flags, int argc, char **argv)
-{
- struct rtnl_handle rth;
- struct {
- struct nlmsghdr n;
- struct rtmsg r;
- char buf[1024];
- } req;
- char mxbuf[256];
- struct rtattr * mxrta = (void*)mxbuf;
- unsigned mxlock = 0;
- char *d = NULL;
- int gw_ok = 0;
- int dst_ok = 0;
- int nhs_ok = 0;
- int scope_ok = 0;
- int table_ok = 0;
- int proto_ok = 0;
- int type_ok = 0;
-
- memset(&req, 0, sizeof(req));
-
- req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
- req.n.nlmsg_flags = NLM_F_REQUEST|flags;
- req.n.nlmsg_type = cmd;
- req.r.rtm_family = preferred_family;
- req.r.rtm_table = RT_TABLE_MAIN;
- req.r.rtm_scope = RT_SCOPE_NOWHERE;
-
- if (cmd != RTM_DELROUTE) {
- req.r.rtm_protocol = RTPROT_BOOT;
- req.r.rtm_scope = RT_SCOPE_UNIVERSE;
- req.r.rtm_type = RTN_UNICAST;
- }
-
- mxrta->rta_type = RTA_METRICS;
- mxrta->rta_len = RTA_LENGTH(0);
-
- while (argc > 0) {
- if (strcmp(*argv, "src") == 0) {
- inet_prefix addr;
- NEXT_ARG();
- get_addr(&addr, *argv, req.r.rtm_family);
- if (req.r.rtm_family == AF_UNSPEC)
- req.r.rtm_family = addr.family;
- addattr_l(&req.n, sizeof(req), RTA_PREFSRC, &addr.data, addr.bytelen);
- } else if (strcmp(*argv, "via") == 0) {
- inet_prefix addr;
- gw_ok = 1;
- NEXT_ARG();
- get_addr(&addr, *argv, req.r.rtm_family);
- if (req.r.rtm_family == AF_UNSPEC)
- req.r.rtm_family = addr.family;
- addattr_l(&req.n, sizeof(req), RTA_GATEWAY, &addr.data, addr.bytelen);
- } else if (strcmp(*argv, "from") == 0) {
- inet_prefix addr;
- NEXT_ARG();
- get_prefix(&addr, *argv, req.r.rtm_family);
- if (req.r.rtm_family == AF_UNSPEC)
- req.r.rtm_family = addr.family;
- if (addr.bytelen)
- addattr_l(&req.n, sizeof(req), RTA_SRC, &addr.data, addr.bytelen);
- req.r.rtm_src_len = addr.bitlen;
- } else if (strcmp(*argv, "tos") == 0 ||
- matches(*argv, "dsfield") == 0) {
- __u32 tos;
- NEXT_ARG();
- if (rtnl_dsfield_a2n(&tos, *argv))
- invarg("\"tos\" value is invalid\n", *argv);
- req.r.rtm_tos = tos;
- } else if (matches(*argv, "metric") == 0 ||
- matches(*argv, "priority") == 0 ||
- matches(*argv, "preference") == 0) {
- __u32 metric;
- NEXT_ARG();
- if (get_u32(&metric, *argv, 0))
- invarg("\"metric\" value is invalid\n", *argv);
- addattr32(&req.n, sizeof(req), RTA_PRIORITY, metric);
- } else if (strcmp(*argv, "scope") == 0) {
- int scope = 0;
- NEXT_ARG();
- if (rtnl_rtscope_a2n(&scope, *argv))
- invarg("invalid \"scope\" value\n", *argv);
- req.r.rtm_scope = scope;
- scope_ok = 1;
- } else if (strcmp(*argv, "mtu") == 0) {
- unsigned mtu;
- NEXT_ARG();
- if (strcmp(*argv, "lock") == 0) {
- mxlock |= (1<<RTAX_MTU);
- NEXT_ARG();
- }
- if (get_unsigned(&mtu, *argv, 0))
- invarg("\"mtu\" value is invalid\n", *argv);
- rta_addattr32(mxrta, sizeof(mxbuf), RTAX_MTU, mtu);
-#ifdef RTAX_ADVMSS
- } else if (strcmp(*argv, "advmss") == 0) {
- unsigned mss;
- NEXT_ARG();
- if (strcmp(*argv, "lock") == 0) {
- mxlock |= (1<<RTAX_ADVMSS);
- NEXT_ARG();
- }
- if (get_unsigned(&mss, *argv, 0))
- invarg("\"mss\" value is invalid\n", *argv);
- rta_addattr32(mxrta, sizeof(mxbuf), RTAX_ADVMSS, mss);
-#endif
-#ifdef RTAX_REORDERING
- } else if (matches(*argv, "reordering") == 0) {
- unsigned reord;
- NEXT_ARG();
- if (strcmp(*argv, "lock") == 0) {
- mxlock |= (1<<RTAX_REORDERING);
- NEXT_ARG();
- }
- if (get_unsigned(&reord, *argv, 0))
- invarg("\"reordering\" value is invalid\n", *argv);
- rta_addattr32(mxrta, sizeof(mxbuf), RTAX_REORDERING, reord);
-#endif
- } else if (strcmp(*argv, "rtt") == 0) {
- unsigned rtt;
- NEXT_ARG();
- if (strcmp(*argv, "lock") == 0) {
- mxlock |= (1<<RTAX_RTT);
- NEXT_ARG();
- }
- if (get_unsigned(&rtt, *argv, 0))
- invarg("\"rtt\" value is invalid\n", *argv);
- rta_addattr32(mxrta, sizeof(mxbuf), RTAX_RTT, rtt);
- } else if (matches(*argv, "window") == 0) {
- unsigned win;
- NEXT_ARG();
- if (strcmp(*argv, "lock") == 0) {
- mxlock |= (1<<RTAX_WINDOW);
- NEXT_ARG();
- }
- if (get_unsigned(&win, *argv, 0))
- invarg("\"window\" value is invalid\n", *argv);
- rta_addattr32(mxrta, sizeof(mxbuf), RTAX_WINDOW, win);
- } else if (matches(*argv, "cwnd") == 0) {
- unsigned win;
- NEXT_ARG();
- if (strcmp(*argv, "lock") == 0) {
- mxlock |= (1<<RTAX_CWND);
- NEXT_ARG();
- }
- if (get_unsigned(&win, *argv, 0))
- invarg("\"cwnd\" value is invalid\n", *argv);
- rta_addattr32(mxrta, sizeof(mxbuf), RTAX_CWND, win);
- } else if (matches(*argv, "rttvar") == 0) {
- unsigned win;
- NEXT_ARG();
- if (strcmp(*argv, "lock") == 0) {
- mxlock |= (1<<RTAX_RTTVAR);
- NEXT_ARG();
- }
- if (get_unsigned(&win, *argv, 0))
- invarg("\"rttvar\" value is invalid\n", *argv);
- rta_addattr32(mxrta, sizeof(mxbuf), RTAX_RTTVAR, win);
- } else if (matches(*argv, "ssthresh") == 0) {
- unsigned win;
- NEXT_ARG();
- if (strcmp(*argv, "lock") == 0) {
- mxlock |= (1<<RTAX_SSTHRESH);
- NEXT_ARG();
- }
- if (get_unsigned(&win, *argv, 0))
- invarg("\"ssthresh\" value is invalid\n", *argv);
- rta_addattr32(mxrta, sizeof(mxbuf), RTAX_SSTHRESH, win);
- } else if (matches(*argv, "realms") == 0) {
- __u32 realm;
- NEXT_ARG();
- if (get_rt_realms(&realm, *argv))
- invarg("\"realm\" value is invalid\n", *argv);
- addattr32(&req.n, sizeof(req), RTA_FLOW, realm);
- } else if (strcmp(*argv, "onlink") == 0) {
- req.r.rtm_flags |= RTNH_F_ONLINK;
- } else if (matches(*argv, "equalize") == 0 ||
- strcmp(*argv, "eql") == 0) {
- req.r.rtm_flags |= RTM_F_EQUALIZE;
- } else if (strcmp(*argv, "nexthop") == 0) {
- nhs_ok = 1;
- break;
- } else if (matches(*argv, "protocol") == 0) {
- int prot;
- NEXT_ARG();
- if (rtnl_rtprot_a2n(&prot, *argv))
- invarg("\"protocol\" value is invalid\n", *argv);
- req.r.rtm_protocol = prot;
- proto_ok =1;
- } else if (matches(*argv, "table") == 0) {
- int tid;
- NEXT_ARG();
- if (rtnl_rttable_a2n(&tid, *argv))
- invarg("\"table\" value is invalid\n", *argv);
- req.r.rtm_table = tid;
- table_ok = 1;
- } else if (strcmp(*argv, "dev") == 0 ||
- strcmp(*argv, "oif") == 0) {
- NEXT_ARG();
- d = *argv;
- } else {
- int type;
- inet_prefix dst;
-
- if (strcmp(*argv, "to") == 0) {
- NEXT_ARG();
- }
- if ((**argv < '0' || **argv > '9') &&
- rtnl_rtntype_a2n(&type, *argv) == 0) {
- NEXT_ARG();
- req.r.rtm_type = type;
- type_ok = 1;
- }
-
- if (matches(*argv, "help") == 0)
- usage();
- if (dst_ok)
- duparg2("to", *argv);
- get_prefix(&dst, *argv, req.r.rtm_family);
- if (req.r.rtm_family == AF_UNSPEC)
- req.r.rtm_family = dst.family;
- req.r.rtm_dst_len = dst.bitlen;
- dst_ok = 1;
- if (dst.bytelen)
- addattr_l(&req.n, sizeof(req), RTA_DST, &dst.data, dst.bytelen);
- }
- argc--; argv++;
- }
-
- if (rtnl_open(&rth, 0) < 0)
- exit(1);
-
- if (d || nhs_ok) {
- int idx;
-
- ll_init_map(&rth);
-
- if (d) {
- if ((idx = ll_name_to_index(d)) == 0) {
- fprintf(stderr, "Cannot find device \"%s\"\n", d);
- return -1;
- }
- addattr32(&req.n, sizeof(req), RTA_OIF, idx);
- }
- }
-
- if (mxrta->rta_len > RTA_LENGTH(0)) {
- if (mxlock)
- rta_addattr32(mxrta, sizeof(mxbuf), RTAX_LOCK, mxlock);
- addattr_l(&req.n, sizeof(req), RTA_METRICS, RTA_DATA(mxrta), RTA_PAYLOAD(mxrta));
- }
-
- if (nhs_ok)
- parse_nexthops(&req.n, &req.r, argc, argv);
-
- if (!table_ok) {
- if (req.r.rtm_type == RTN_LOCAL ||
- req.r.rtm_type == RTN_BROADCAST ||
- req.r.rtm_type == RTN_NAT ||
- req.r.rtm_type == RTN_ANYCAST)
- req.r.rtm_table = RT_TABLE_LOCAL;
- }
- if (!scope_ok) {
- if (req.r.rtm_type == RTN_LOCAL ||
- req.r.rtm_type == RTN_NAT)
- req.r.rtm_scope = RT_SCOPE_HOST;
- else if (req.r.rtm_type == RTN_BROADCAST ||
- req.r.rtm_type == RTN_MULTICAST ||
- req.r.rtm_type == RTN_ANYCAST)
- req.r.rtm_scope = RT_SCOPE_LINK;
- else if (req.r.rtm_type == RTN_UNICAST ||
- req.r.rtm_type == RTN_UNSPEC) {
- if (cmd == RTM_DELROUTE)
- req.r.rtm_scope = RT_SCOPE_NOWHERE;
- else if (!gw_ok && !nhs_ok)
- req.r.rtm_scope = RT_SCOPE_LINK;
- }
- }
-
- if (req.r.rtm_family == AF_UNSPEC)
- req.r.rtm_family = AF_INET;
-
- if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
- exit(2);
-
- return 0;
-}
-
-static int rtnl_rtcache_request(struct rtnl_handle *rth, int family)
-{
- struct {
- struct nlmsghdr nlh;
- struct rtmsg rtm;
- } req;
- struct sockaddr_nl nladdr;
-
- memset(&nladdr, 0, sizeof(nladdr));
- memset(&req, 0, sizeof(req));
- nladdr.nl_family = AF_NETLINK;
-
- req.nlh.nlmsg_len = sizeof(req);
- req.nlh.nlmsg_type = RTM_GETROUTE;
- req.nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_REQUEST;
- req.nlh.nlmsg_pid = 0;
- req.nlh.nlmsg_seq = rth->dump = ++rth->seq;
- req.rtm.rtm_family = family;
- req.rtm.rtm_flags |= RTM_F_CLONED;
-
- return sendto(rth->fd, (void*)&req, sizeof(req), 0, (struct sockaddr*)&nladdr, sizeof(nladdr));
-}
-
-static int iproute_flush_cache(void)
-{
-#define ROUTE_FLUSH_PATH "/proc/sys/net/ipv4/route/flush"
-
- int len;
- int flush_fd = open (ROUTE_FLUSH_PATH, O_WRONLY);
- char *buffer = "-1";
-
- if (flush_fd < 0) {
- fprintf (stderr, "Cannot open \"%s\"\n", ROUTE_FLUSH_PATH);
- return -1;
- }
-
- len = strlen (buffer);
-
- if ((write (flush_fd, (void *)buffer, len)) < len) {
- fprintf (stderr, "Cannot flush routing cache\n");
- return -1;
- }
- close(flush_fd);
- return 0;
-}
-
-
-static int iproute_list_or_flush(int argc, char **argv, int flush)
-{
- int do_ipv6 = preferred_family;
- struct rtnl_handle rth;
- char *id = NULL;
- char *od = NULL;
-
- iproute_reset_filter();
- filter.tb = RT_TABLE_MAIN;
-
- if (flush && argc <= 0) {
- fprintf(stderr, "\"ip route flush\" requires arguments.\n");
- return -1;
- }
-
- while (argc > 0) {
- if (matches(*argv, "table") == 0) {
- int tid;
- NEXT_ARG();
- if (rtnl_rttable_a2n(&tid, *argv)) {
- if (strcmp(*argv, "all") == 0) {
- tid = 0;
- } else if (strcmp(*argv, "cache") == 0) {
- tid = -1;
- } else if (strcmp(*argv, "help") == 0) {
- usage();
- } else {
- invarg("table id value is invalid\n", *argv);
- }
- }
- filter.tb = tid;
- } else if (matches(*argv, "cached") == 0 ||
- matches(*argv, "cloned") == 0) {
- filter.tb = -1;
- } else if (strcmp(*argv, "tos") == 0 ||
- matches(*argv, "dsfield") == 0) {
- __u32 tos;
- NEXT_ARG();
- if (rtnl_dsfield_a2n(&tos, *argv))
- invarg("TOS value is invalid\n", *argv);
- filter.tos = tos;
- filter.tosmask = -1;
- } else if (matches(*argv, "protocol") == 0) {
- int prot = 0;
- NEXT_ARG();
- filter.protocolmask = -1;
- if (rtnl_rtprot_a2n(&prot, *argv)) {
- if (strcmp(*argv, "all") != 0)
- invarg("invalid \"protocol\"\n", *argv);
- prot = 0;
- filter.protocolmask = 0;
- }
- filter.protocol = prot;
- } else if (matches(*argv, "scope") == 0) {
- int 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 (matches(*argv, "type") == 0) {
- int type;
- NEXT_ARG();
- filter.typemask = -1;
- if (rtnl_rtntype_a2n(&type, *argv))
- invarg("node type value is invalid\n", *argv);
- filter.type = type;
- } else if (strcmp(*argv, "dev") == 0 ||
- strcmp(*argv, "oif") == 0) {
- NEXT_ARG();
- od = *argv;
- } else if (strcmp(*argv, "iif") == 0) {
- NEXT_ARG();
- id = *argv;
- } else if (strcmp(*argv, "via") == 0) {
- NEXT_ARG();
- get_prefix(&filter.rvia, *argv, do_ipv6);
- } else if (strcmp(*argv, "src") == 0) {
- NEXT_ARG();
- get_prefix(&filter.rprefsrc, *argv, do_ipv6);
- } else if (matches(*argv, "realms") == 0) {
- __u32 realm;
- NEXT_ARG();
- if (get_rt_realms(&realm, *argv))
- invarg("invalid realms\n", *argv);
- filter.realm = realm;
- filter.realmmask = ~0U;
- if ((filter.realm&0xFFFF) == 0 &&
- (*argv)[strlen(*argv) - 1] == '/')
- filter.realmmask &= ~0xFFFF;
- if ((filter.realm&0xFFFF0000U) == 0 &&
- (strchr(*argv, '/') == NULL ||
- (*argv)[0] == '/'))
- filter.realmmask &= ~0xFFFF0000U;
- } else if (matches(*argv, "from") == 0) {
- NEXT_ARG();
- if (matches(*argv, "root") == 0) {
- NEXT_ARG();
- get_prefix(&filter.rsrc, *argv, do_ipv6);
- } else if (matches(*argv, "match") == 0) {
- NEXT_ARG();
- get_prefix(&filter.msrc, *argv, do_ipv6);
- } else {
- if (matches(*argv, "exact") == 0) {
- NEXT_ARG();
- }
- get_prefix(&filter.msrc, *argv, do_ipv6);
- filter.rsrc = filter.msrc;
- }
- } else {
- if (matches(*argv, "to") == 0) {
- NEXT_ARG();
- }
- if (matches(*argv, "root") == 0) {
- NEXT_ARG();
- get_prefix(&filter.rdst, *argv, do_ipv6);
- } else if (matches(*argv, "match") == 0) {
- NEXT_ARG();
- get_prefix(&filter.mdst, *argv, do_ipv6);
- } else {
- if (matches(*argv, "exact") == 0) {
- NEXT_ARG();
- }
- get_prefix(&filter.mdst, *argv, do_ipv6);
- filter.rdst = filter.mdst;
- }
- }
- argc--; argv++;
- }
-
- if (do_ipv6 == AF_UNSPEC && filter.tb)
- do_ipv6 = AF_INET;
-
- if (rtnl_open(&rth, 0) < 0)
- exit(1);
-
- ll_init_map(&rth);
-
- if (id || od) {
- int idx;
-
- if (id) {
- if ((idx = ll_name_to_index(id)) == 0) {
- fprintf(stderr, "Cannot find device \"%s\"\n", id);
- return -1;
- }
- filter.iif = idx;
- filter.iifmask = -1;
- }
- if (od) {
- if ((idx = ll_name_to_index(od)) == 0) {
- fprintf(stderr, "Cannot find device \"%s\"\n", od);
- return -1;
- }
- filter.oif = idx;
- filter.oifmask = -1;
- }
- }
-
- if (flush) {
- int round = 0;
- char flushb[4096-512];
- time_t start = time(0);
-
- if (filter.tb == -1) {
- if (do_ipv6 != AF_INET6) {
- iproute_flush_cache();
- if (show_stats)
- printf("*** IPv4 routing cache is flushed.\n");
- }
- if (do_ipv6 == AF_INET)
- return 0;
- }
-
- filter.flushb = flushb;
- filter.flushp = 0;
- filter.flushe = sizeof(flushb);
- filter.rth = &rth;
-
- for (;;) {
- if (rtnl_wilddump_request(&rth, do_ipv6, RTM_GETROUTE) < 0) {
- perror("Cannot send dump request");
- exit(1);
- }
- filter.flushed = 0;
- if (rtnl_dump_filter(&rth, print_route, stdout, NULL, NULL) < 0) {
- fprintf(stderr, "Flush terminated\n");
- exit(1);
- }
- if (filter.flushed == 0) {
- if (round == 0) {
- if (filter.tb != -1 || do_ipv6 == AF_INET6)
- fprintf(stderr, "Nothing to flush.\n");
- } else if (show_stats)
- printf("*** Flush is complete after %d round%s ***\n", round, round>1?"s":"");
- fflush(stdout);
- return 0;
- }
- round++;
- if (flush_update() < 0)
- exit(1);
-
- if (time(0) - start > 30) {
- printf("\n*** Flush not completed after %ld seconds, %d entries remain ***\n",
- time(0) - start, filter.flushed);
- exit(1);
- }
-
- if (show_stats) {
- printf("\n*** Round %d, deleting %d entries ***\n", round, filter.flushed);
- fflush(stdout);
- }
- }
- }
-
- if (filter.tb != -1) {
- if (rtnl_wilddump_request(&rth, do_ipv6, RTM_GETROUTE) < 0) {
- perror("Cannot send dump request");
- exit(1);
- }
- } else {
- if (rtnl_rtcache_request(&rth, do_ipv6) < 0) {
- perror("Cannot send dump request");
- exit(1);
- }
- }
-
- if (rtnl_dump_filter(&rth, print_route, stdout, NULL, NULL) < 0) {
- fprintf(stderr, "Dump terminated\n");
- exit(1);
- }
-
- exit(0);
-}
-
-
-int iproute_get(int argc, char **argv)
-{
- struct rtnl_handle rth;
- struct {
- struct nlmsghdr n;
- struct rtmsg r;
- char buf[1024];
- } req;
- char *idev = NULL;
- char *odev = NULL;
- int connected = 0;
- int from_ok = 0;
-
- memset(&req, 0, sizeof(req));
-
- iproute_reset_filter();
-
- req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
- req.n.nlmsg_flags = NLM_F_REQUEST;
- req.n.nlmsg_type = RTM_GETROUTE;
- req.r.rtm_family = preferred_family;
- req.r.rtm_table = 0;
- req.r.rtm_protocol = 0;
- req.r.rtm_scope = 0;
- req.r.rtm_type = 0;
- req.r.rtm_src_len = 0;
- req.r.rtm_dst_len = 0;
- req.r.rtm_tos = 0;
-
- while (argc > 0) {
- if (strcmp(*argv, "tos") == 0 ||
- matches(*argv, "dsfield") == 0) {
- __u32 tos;
- NEXT_ARG();
- if (rtnl_dsfield_a2n(&tos, *argv))
- invarg("TOS value is invalid\n", *argv);
- req.r.rtm_tos = tos;
- } else if (matches(*argv, "from") == 0) {
- inet_prefix addr;
- NEXT_ARG();
- if (matches(*argv, "help") == 0)
- usage();
- from_ok = 1;
- get_prefix(&addr, *argv, req.r.rtm_family);
- if (req.r.rtm_family == AF_UNSPEC)
- req.r.rtm_family = addr.family;
- if (addr.bytelen)
- addattr_l(&req.n, sizeof(req), RTA_SRC, &addr.data, addr.bytelen);
- req.r.rtm_src_len = addr.bitlen;
- } else if (matches(*argv, "iif") == 0) {
- NEXT_ARG();
- idev = *argv;
- } else if (matches(*argv, "oif") == 0 ||
- strcmp(*argv, "dev") == 0) {
- NEXT_ARG();
- odev = *argv;
- } else if (matches(*argv, "notify") == 0) {
- req.r.rtm_flags |= RTM_F_NOTIFY;
- } else if (matches(*argv, "connected") == 0) {
- connected = 1;
- } else {
- inet_prefix addr;
- if (strcmp(*argv, "to") == 0) {
- NEXT_ARG();
- }
- if (matches(*argv, "help") == 0)
- usage();
- get_prefix(&addr, *argv, req.r.rtm_family);
- if (req.r.rtm_family == AF_UNSPEC)
- req.r.rtm_family = addr.family;
- if (addr.bytelen)
- addattr_l(&req.n, sizeof(req), RTA_DST, &addr.data, addr.bytelen);
- req.r.rtm_dst_len = addr.bitlen;
- }
- argc--; argv++;
- }
-
- if (req.r.rtm_dst_len == 0) {
- fprintf(stderr, "need at least destination address\n");
- exit(1);
- }
-
- if (rtnl_open(&rth, 0) < 0)
- exit(1);
-
- ll_init_map(&rth);
-
- if (idev || odev) {
- int idx;
-
- if (idev) {
- if ((idx = ll_name_to_index(idev)) == 0) {
- fprintf(stderr, "Cannot find device \"%s\"\n", idev);
- return -1;
- }
- addattr32(&req.n, sizeof(req), RTA_IIF, idx);
- }
- if (odev) {
- if ((idx = ll_name_to_index(odev)) == 0) {
- fprintf(stderr, "Cannot find device \"%s\"\n", odev);
- return -1;
- }
- addattr32(&req.n, sizeof(req), RTA_OIF, idx);
- }
- }
-
- if (req.r.rtm_family == AF_UNSPEC)
- req.r.rtm_family = AF_INET;
-
- if (rtnl_talk(&rth, &req.n, 0, 0, &req.n, NULL, NULL) < 0)
- exit(2);
-
- if (connected && !from_ok) {
- struct rtmsg *r = NLMSG_DATA(&req.n);
- int len = req.n.nlmsg_len;
- struct rtattr * tb[RTA_MAX+1];
-
- if (print_route(NULL, &req.n, (void*)stdout) < 0) {
- fprintf(stderr, "An error :-)\n");
- exit(1);
- }
-
- if (req.n.nlmsg_type != RTM_NEWROUTE) {
- fprintf(stderr, "Not a route?\n");
- return -1;
- }
- len -= NLMSG_LENGTH(sizeof(*r));
- if (len < 0) {
- fprintf(stderr, "Wrong len %d\n", len);
- return -1;
- }
-
- parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
-
- if (tb[RTA_PREFSRC]) {
- tb[RTA_PREFSRC]->rta_type = RTA_SRC;
- r->rtm_src_len = 8*RTA_PAYLOAD(tb[RTA_PREFSRC]);
- } else if (!tb[RTA_SRC]) {
- fprintf(stderr, "Failed to connect the route\n");
- return -1;
- }
- if (!odev && tb[RTA_OIF])
- tb[RTA_OIF]->rta_type = 0;
- if (tb[RTA_GATEWAY])
- tb[RTA_GATEWAY]->rta_type = 0;
- if (!idev && tb[RTA_IIF])
- tb[RTA_IIF]->rta_type = 0;
- req.n.nlmsg_flags = NLM_F_REQUEST;
- req.n.nlmsg_type = RTM_GETROUTE;
-
- if (rtnl_talk(&rth, &req.n, 0, 0, &req.n, NULL, NULL) < 0)
- exit(2);
- }
-
- if (print_route(NULL, &req.n, (void*)stdout) < 0) {
- fprintf(stderr, "An error :-)\n");
- exit(1);
- }
-
- exit(0);
-}
-
-void iproute_reset_filter()
-{
- memset(&filter, 0, sizeof(filter));
- filter.mdst.bitlen = -1;
- filter.msrc.bitlen = -1;
-}
-
-int do_iproute(int argc, char **argv)
-{
- if (argc < 1)
- return iproute_list_or_flush(0, NULL, 0);
-
- if (matches(*argv, "add") == 0)
- return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_EXCL,
- argc-1, argv+1);
- if (matches(*argv, "change") == 0 || strcmp(*argv, "chg") == 0)
- return iproute_modify(RTM_NEWROUTE, NLM_F_REPLACE,
- argc-1, argv+1);
- if (matches(*argv, "replace") == 0)
- return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_REPLACE,
- argc-1, argv+1);
- if (matches(*argv, "prepend") == 0)
- return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE,
- argc-1, argv+1);
- if (matches(*argv, "append") == 0)
- return iproute_modify(RTM_NEWROUTE, NLM_F_CREATE|NLM_F_APPEND,
- argc-1, argv+1);
- if (matches(*argv, "test") == 0)
- return iproute_modify(RTM_NEWROUTE, NLM_F_EXCL,
- argc-1, argv+1);
- if (matches(*argv, "delete") == 0)
- return iproute_modify(RTM_DELROUTE, 0,
- argc-1, argv+1);
- if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
- || matches(*argv, "lst") == 0)
- return iproute_list_or_flush(argc-1, argv+1, 0);
- if (matches(*argv, "get") == 0)
- return iproute_get(argc-1, argv+1);
- if (matches(*argv, "flush") == 0)
- return iproute_list_or_flush(argc-1, argv+1, 1);
- if (matches(*argv, "help") == 0)
- usage();
- fprintf(stderr, "Command \"%s\" is unknown, try \"ip route help\".\n", *argv);
- exit(-1);
-}
-
git://git.onelab.eu / iproute2.git / commitdiff