IP applet by Bastian Blank <waldi@debian.org>

1 files changed, 674 insertions, 0 deletions

diff --git a/networking/libiproute/iproute.c b/networking/libiproute/iproute.c
new file mode 100644
index 000000000..e38abcd01
--- /dev/null
+++ b/networking/libiproute/iproute.c
@@ -0,0 +1,674 @@
+/*
+ * 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 <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"
+
+#include "busybox.h"
+
+#ifndef RTAX_RTTVAR
+#define RTAX_RTTVAR RTAX_HOPS
+#endif
+
+
+static struct
+{
+	int tb;
+	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;
+
+int print_route(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];
+	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;
+	}
+	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;
+
+	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.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;
+
+	memset(tb, 0, sizeof(tb));
+	parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
+
+	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 (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 (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_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_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);
+		} else if (ci) {
+			if (ci->rta_error != 0)
+				fprintf(fp, " error %d", ci->rta_error);
+		}
+	}
+	if (tb[RTA_IIF] && filter.iifmask != -1) {
+		fprintf(fp, " iif %s", ll_index_to_name(*(int*)RTA_DATA(tb[RTA_IIF])));
+	}
+	fprintf(fp, "\n");
+	fflush(fp);
+	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, "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);
+		} 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 (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 (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 (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 (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_list(int argc, char **argv)
+{
+	int do_ipv6 = preferred_family;
+	struct rtnl_handle rth;
+	char *id = NULL;
+	char *od = NULL;
+
+	iproute_reset_filter();
+	filter.tb = RT_TABLE_MAIN;
+
+	while (argc > 0) {
+		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 (strcmp(*argv, "dev") == 0 ||
+			   strcmp(*argv, "oif") == 0) {
+			NEXT_ARG();
+			od = *argv;
+		} else if (strcmp(*argv, "iif") == 0) {
+			NEXT_ARG();
+			id = *argv;
+		} 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 (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 (matches(*argv, "from") == 0) {
+			inet_prefix addr;
+			NEXT_ARG();
+			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();
+			}
+			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;
+		}
+
+		memset(tb, 0, sizeof(tb));
+		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(0, NULL);
+	
+	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(argc-1, argv+1);
+	if (matches(*argv, "get") == 0)
+		return iproute_get(argc-1, argv+1);
+	fprintf(stderr, "Command \"%s\" is unknown, try \"ip route help\".\n", *argv);
+	exit(-1);
+}
+