--- /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);
+ rtnh->rtnh_ifindex = 0;
+ rtnh->rtnh_flags = 0;
+ rtnh->rtnh_hops = 0;
+ 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 / blobdiff