1 /*
2 * rtm_map.c
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
8 *
9 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
10 *
11 */
12
13 #include <stdio.h>
14 #include <stdlib.h>
15 #include <unistd.h>
16 #include <syslog.h>
17 #include <fcntl.h>
18 #include <string.h>
19 #include <sys/socket.h>
20 #include <netinet/in.h>
21
22 #include "rt_names.h"
23 #include "utils.h"
24
rtnl_rtntype_n2a(int id,char * buf,int len)25 char *rtnl_rtntype_n2a(int id, char *buf, int len)
26 {
27 switch (id) {
28 case RTN_UNSPEC:
29 return "none";
30 case RTN_UNICAST:
31 return "unicast";
32 case RTN_LOCAL:
33 return "local";
34 case RTN_BROADCAST:
35 return "broadcast";
36 case RTN_ANYCAST:
37 return "anycast";
38 case RTN_MULTICAST:
39 return "multicast";
40 case RTN_BLACKHOLE:
41 return "blackhole";
42 case RTN_UNREACHABLE:
43 return "unreachable";
44 case RTN_PROHIBIT:
45 return "prohibit";
46 case RTN_THROW:
47 return "throw";
48 case RTN_NAT:
49 return "nat";
50 case RTN_XRESOLVE:
51 return "xresolve";
52 default:
53 snprintf(buf, len, "%d", id);
54 return buf;
55 }
56 }
57
58
rtnl_rtntype_a2n(int * id,char * arg)59 int rtnl_rtntype_a2n(int *id, char *arg)
60 {
61 char *end;
62 unsigned long res;
63
64 if (strcmp(arg, "local") == 0)
65 res = RTN_LOCAL;
66 else if (strcmp(arg, "nat") == 0)
67 res = RTN_NAT;
68 else if (matches(arg, "broadcast") == 0 ||
69 strcmp(arg, "brd") == 0)
70 res = RTN_BROADCAST;
71 else if (matches(arg, "anycast") == 0)
72 res = RTN_ANYCAST;
73 else if (matches(arg, "multicast") == 0)
74 res = RTN_MULTICAST;
75 else if (matches(arg, "prohibit") == 0)
76 res = RTN_PROHIBIT;
77 else if (matches(arg, "unreachable") == 0)
78 res = RTN_UNREACHABLE;
79 else if (matches(arg, "blackhole") == 0)
80 res = RTN_BLACKHOLE;
81 else if (matches(arg, "xresolve") == 0)
82 res = RTN_XRESOLVE;
83 else if (matches(arg, "unicast") == 0)
84 res = RTN_UNICAST;
85 else if (strcmp(arg, "throw") == 0)
86 res = RTN_THROW;
87 else {
88 res = strtoul(arg, &end, 0);
89 if (!end || end == arg || *end || res > 255)
90 return -1;
91 }
92 *id = res;
93 return 0;
94 }
95
get_rt_realms(__u32 * realms,char * arg)96 int get_rt_realms(__u32 *realms, char *arg)
97 {
98 __u32 realm = 0;
99 char *p = strchr(arg, '/');
100
101 *realms = 0;
102 if (p) {
103 *p = 0;
104 if (rtnl_rtrealm_a2n(realms, arg)) {
105 *p = '/';
106 return -1;
107 }
108 *realms <<= 16;
109 *p = '/';
110 arg = p+1;
111 }
112 if (*arg && rtnl_rtrealm_a2n(&realm, arg))
113 return -1;
114 *realms |= realm;
115 return 0;
116 }
117