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aba5acdf SH |
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 | ||
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 | ||
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 | ||
d583e88e | 96 | static int get_rt_realms(__u32 *realms, char *arg) |
aba5acdf SH |
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 | } | |
d583e88e DB |
117 | |
118 | int get_rt_realms_or_raw(__u32 *realms, char *arg) | |
119 | { | |
120 | if (!get_rt_realms(realms, arg)) | |
121 | return 0; | |
122 | ||
123 | return get_unsigned(realms, arg, 0); | |
124 | } |