mirror of
https://github.com/sheumann/hush.git
synced 2024-12-23 05:29:58 +00:00
117 lines
2.3 KiB
C
117 lines
2.3 KiB
C
/*
|
|
* rtm_map.c
|
|
*
|
|
* 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>
|
|
*
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <syslog.h>
|
|
#include <fcntl.h>
|
|
#include <string.h>
|
|
#include <sys/socket.h>
|
|
#include <netinet/in.h>
|
|
|
|
#include "rt_names.h"
|
|
#include "utils.h"
|
|
|
|
char *rtnl_rtntype_n2a(int id, char *buf, int len)
|
|
{
|
|
switch (id) {
|
|
case RTN_UNSPEC:
|
|
return "none";
|
|
case RTN_UNICAST:
|
|
return "unicast";
|
|
case RTN_LOCAL:
|
|
return "local";
|
|
case RTN_BROADCAST:
|
|
return "broadcast";
|
|
case RTN_ANYCAST:
|
|
return "anycast";
|
|
case RTN_MULTICAST:
|
|
return "multicast";
|
|
case RTN_BLACKHOLE:
|
|
return "blackhole";
|
|
case RTN_UNREACHABLE:
|
|
return "unreachable";
|
|
case RTN_PROHIBIT:
|
|
return "prohibit";
|
|
case RTN_THROW:
|
|
return "throw";
|
|
case RTN_NAT:
|
|
return "nat";
|
|
case RTN_XRESOLVE:
|
|
return "xresolve";
|
|
default:
|
|
snprintf(buf, len, "%d", id);
|
|
return buf;
|
|
}
|
|
}
|
|
|
|
|
|
int rtnl_rtntype_a2n(int *id, char *arg)
|
|
{
|
|
char *end;
|
|
unsigned long res;
|
|
|
|
if (strcmp(arg, "local") == 0)
|
|
res = RTN_LOCAL;
|
|
else if (strcmp(arg, "nat") == 0)
|
|
res = RTN_NAT;
|
|
else if (matches(arg, "broadcast") == 0 ||
|
|
strcmp(arg, "brd") == 0)
|
|
res = RTN_BROADCAST;
|
|
else if (matches(arg, "anycast") == 0)
|
|
res = RTN_ANYCAST;
|
|
else if (matches(arg, "multicast") == 0)
|
|
res = RTN_MULTICAST;
|
|
else if (matches(arg, "prohibit") == 0)
|
|
res = RTN_PROHIBIT;
|
|
else if (matches(arg, "unreachable") == 0)
|
|
res = RTN_UNREACHABLE;
|
|
else if (matches(arg, "blackhole") == 0)
|
|
res = RTN_BLACKHOLE;
|
|
else if (matches(arg, "xresolve") == 0)
|
|
res = RTN_XRESOLVE;
|
|
else if (matches(arg, "unicast") == 0)
|
|
res = RTN_UNICAST;
|
|
else if (strcmp(arg, "throw") == 0)
|
|
res = RTN_THROW;
|
|
else {
|
|
res = strtoul(arg, &end, 0);
|
|
if (!end || end == arg || *end || res > 255)
|
|
return -1;
|
|
}
|
|
*id = res;
|
|
return 0;
|
|
}
|
|
|
|
int get_rt_realms(__u32 *realms, char *arg)
|
|
{
|
|
__u32 realm = 0;
|
|
char *p = strchr(arg, '/');
|
|
|
|
*realms = 0;
|
|
if (p) {
|
|
*p = 0;
|
|
if (rtnl_rtrealm_a2n(realms, arg)) {
|
|
*p = '/';
|
|
return -1;
|
|
}
|
|
*realms <<= 16;
|
|
*p = '/';
|
|
arg = p+1;
|
|
}
|
|
if (*arg && rtnl_rtrealm_a2n(&realm, arg))
|
|
return -1;
|
|
*realms |= realm;
|
|
return 0;
|
|
}
|