Blame ip/rtm_map.c

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/*
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 * rtm_map.c
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 *
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 *		This program is free software; you can redistribute it and/or
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 *		modify it under the terms of the GNU General Public License
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 *		as published by the Free Software Foundation; either version
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 *		2 of the License, or (at your option) any later version.
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 *
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 * Authors:	Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
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 *
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 */
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <string.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include "rt_names.h"
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#include "utils.h"
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char *rtnl_rtntype_n2a(int id, char *buf, int len)
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{
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	if (numeric) {
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		snprintf(buf, len, "%d", id);
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		return buf;
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	}
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	switch (id) {
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	case RTN_UNSPEC:
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		return "none";
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	case RTN_UNICAST:
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		return "unicast";
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	case RTN_LOCAL:
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		return "local";
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	case RTN_BROADCAST:
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		return "broadcast";
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	case RTN_ANYCAST:
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		return "anycast";
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	case RTN_MULTICAST:
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		return "multicast";
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	case RTN_BLACKHOLE:
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		return "blackhole";
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	case RTN_UNREACHABLE:
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		return "unreachable";
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	case RTN_PROHIBIT:
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		return "prohibit";
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	case RTN_THROW:
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		return "throw";
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	case RTN_NAT:
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		return "nat";
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	case RTN_XRESOLVE:
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		return "xresolve";
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	default:
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		snprintf(buf, len, "%d", id);
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		return buf;
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	}
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}
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int rtnl_rtntype_a2n(int *id, char *arg)
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{
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	char *end;
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	unsigned long res;
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	if (strcmp(arg, "local") == 0)
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		res = RTN_LOCAL;
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	else if (strcmp(arg, "nat") == 0)
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		res = RTN_NAT;
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	else if (matches(arg, "broadcast") == 0 ||
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		 strcmp(arg, "brd") == 0)
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		res = RTN_BROADCAST;
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	else if (matches(arg, "anycast") == 0)
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		res = RTN_ANYCAST;
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	else if (matches(arg, "multicast") == 0)
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		res = RTN_MULTICAST;
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	else if (matches(arg, "prohibit") == 0)
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		res = RTN_PROHIBIT;
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	else if (matches(arg, "unreachable") == 0)
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		res = RTN_UNREACHABLE;
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	else if (matches(arg, "blackhole") == 0)
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		res = RTN_BLACKHOLE;
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	else if (matches(arg, "xresolve") == 0)
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		res = RTN_XRESOLVE;
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	else if (matches(arg, "unicast") == 0)
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		res = RTN_UNICAST;
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	else if (strcmp(arg, "throw") == 0)
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		res = RTN_THROW;
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	else {
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		res = strtoul(arg, &end, 0);
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		if (!end || end == arg || *end || res > 255)
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			return -1;
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	}
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	*id = res;
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	return 0;
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}
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static int get_rt_realms(__u32 *realms, char *arg)
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{
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	__u32 realm = 0;
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	char *p = strchr(arg, '/');
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	*realms = 0;
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	if (p) {
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		*p = 0;
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		if (rtnl_rtrealm_a2n(realms, arg)) {
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			*p = '/';
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			return -1;
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		}
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		*realms <<= 16;
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		*p = '/';
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		arg = p+1;
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	}
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	if (*arg && rtnl_rtrealm_a2n(&realm, arg))
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		return -1;
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	*realms |= realm;
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	return 0;
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}
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int get_rt_realms_or_raw(__u32 *realms, char *arg)
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{
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	if (!get_rt_realms(realms, arg))
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		return 0;
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	return get_unsigned(realms, arg, 0);
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}