whitespace cleanup
[platform/upstream/busybox.git] / networking / libiproute / rt_names.c
1 /* vi: set sw=4 ts=4: */
2 /*
3  * This program is free software; you can redistribute it and/or
4  * modify it under the terms of the GNU General Public License
5  * as published by the Free Software Foundation; either version
6  * 2 of the License, or (at your option) any later version.
7  *
8  * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
9  */
10 #include "libbb.h"
11 #include "rt_names.h"
12
13 typedef struct rtnl_tab_t {
14         const char *cached_str;
15         unsigned cached_result;
16         const char *tab[256];
17 } rtnl_tab_t;
18
19 static void rtnl_tab_initialize(const char *file, const char **tab)
20 {
21         char *token[2];
22         parser_t *parser = config_open2(file, fopen_for_read);
23
24         while (config_read(parser, token, 2, 2, "# \t", PARSE_NORMAL)) {
25                 unsigned id = bb_strtou(token[0], NULL, 0);
26                 if (id > 256) {
27                         bb_error_msg("database %s is corrupted at line %d",
28                                 file, parser->lineno);
29                         break;
30                 }
31                 tab[id] = xstrdup(token[1]);
32         }
33         config_close(parser);
34 }
35
36 static int rtnl_a2n(rtnl_tab_t *tab, uint32_t *id, const char *arg, int base)
37 {
38         unsigned i;
39
40         if (tab->cached_str && strcmp(tab->cached_str, arg) == 0) {
41                 *id = tab->cached_result;
42                 return 0;
43         }
44
45         for (i = 0; i < 256; i++) {
46                 if (tab->tab[i]
47                  && strcmp(tab->tab[i], arg) == 0
48                 ) {
49                         tab->cached_str = tab->tab[i];
50                         tab->cached_result = i;
51                         *id = i;
52                         return 0;
53                 }
54         }
55
56         i = bb_strtou(arg, NULL, base);
57         if (i > 255)
58                 return -1;
59         *id = i;
60         return 0;
61 }
62
63
64 static rtnl_tab_t *rtnl_rtprot_tab;
65
66 static void rtnl_rtprot_initialize(void)
67 {
68         static const char *const init_tab[] = {
69                 "none",
70                 "redirect",
71                 "kernel",
72                 "boot",
73                 "static",
74                 NULL,
75                 NULL,
76                 NULL,
77                 "gated",
78                 "ra",
79                 "mrt",
80                 "zebra",
81                 "bird",
82         };
83
84         if (rtnl_rtprot_tab)
85                 return;
86         rtnl_rtprot_tab = xzalloc(sizeof(*rtnl_rtprot_tab));
87         memcpy(rtnl_rtprot_tab->tab, init_tab, sizeof(init_tab));
88         rtnl_tab_initialize("/etc/iproute2/rt_protos", rtnl_rtprot_tab->tab);
89 }
90
91 const char* FAST_FUNC rtnl_rtprot_n2a(int id, char *buf)
92 {
93         if (id < 0 || id >= 256) {
94                 sprintf(buf, "%d", id);
95                 return buf;
96         }
97
98         rtnl_rtprot_initialize();
99
100         if (rtnl_rtprot_tab->tab[id])
101                 return rtnl_rtprot_tab->tab[id];
102         /* buf is SPRINT_BSIZE big */
103         sprintf(buf, "%d", id);
104         return buf;
105 }
106
107 int FAST_FUNC rtnl_rtprot_a2n(uint32_t *id, char *arg)
108 {
109         rtnl_rtprot_initialize();
110         return rtnl_a2n(rtnl_rtprot_tab, id, arg, 0);
111 }
112
113
114 static rtnl_tab_t *rtnl_rtscope_tab;
115
116 static void rtnl_rtscope_initialize(void)
117 {
118         if (rtnl_rtscope_tab)
119                 return;
120         rtnl_rtscope_tab = xzalloc(sizeof(*rtnl_rtscope_tab));
121         rtnl_rtscope_tab->tab[0] = "global";
122         rtnl_rtscope_tab->tab[255] = "nowhere";
123         rtnl_rtscope_tab->tab[254] = "host";
124         rtnl_rtscope_tab->tab[253] = "link";
125         rtnl_rtscope_tab->tab[200] = "site";
126         rtnl_tab_initialize("/etc/iproute2/rt_scopes", rtnl_rtscope_tab->tab);
127 }
128
129 const char* FAST_FUNC rtnl_rtscope_n2a(int id, char *buf)
130 {
131         if (id < 0 || id >= 256) {
132                 sprintf(buf, "%d", id);
133                 return buf;
134         }
135
136         rtnl_rtscope_initialize();
137
138         if (rtnl_rtscope_tab->tab[id])
139                 return rtnl_rtscope_tab->tab[id];
140         /* buf is SPRINT_BSIZE big */
141         sprintf(buf, "%d", id);
142         return buf;
143 }
144
145 int FAST_FUNC rtnl_rtscope_a2n(uint32_t *id, char *arg)
146 {
147         rtnl_rtscope_initialize();
148         return rtnl_a2n(rtnl_rtscope_tab, id, arg, 0);
149 }
150
151
152 static rtnl_tab_t *rtnl_rtrealm_tab;
153
154 static void rtnl_rtrealm_initialize(void)
155 {
156         if (rtnl_rtrealm_tab) return;
157         rtnl_rtrealm_tab = xzalloc(sizeof(*rtnl_rtrealm_tab));
158         rtnl_rtrealm_tab->tab[0] = "unknown";
159         rtnl_tab_initialize("/etc/iproute2/rt_realms", rtnl_rtrealm_tab->tab);
160 }
161
162 int FAST_FUNC rtnl_rtrealm_a2n(uint32_t *id, char *arg)
163 {
164         rtnl_rtrealm_initialize();
165         return rtnl_a2n(rtnl_rtrealm_tab, id, arg, 0);
166 }
167
168 #if ENABLE_FEATURE_IP_RULE
169 const char* FAST_FUNC rtnl_rtrealm_n2a(int id, char *buf)
170 {
171         if (id < 0 || id >= 256) {
172                 sprintf(buf, "%d", id);
173                 return buf;
174         }
175
176         rtnl_rtrealm_initialize();
177
178         if (rtnl_rtrealm_tab->tab[id])
179                 return rtnl_rtrealm_tab->tab[id];
180         /* buf is SPRINT_BSIZE big */
181         sprintf(buf, "%d", id);
182         return buf;
183 }
184 #endif
185
186
187 static rtnl_tab_t *rtnl_rtdsfield_tab;
188
189 static void rtnl_rtdsfield_initialize(void)
190 {
191         if (rtnl_rtdsfield_tab) return;
192         rtnl_rtdsfield_tab = xzalloc(sizeof(*rtnl_rtdsfield_tab));
193         rtnl_rtdsfield_tab->tab[0] = "0";
194         rtnl_tab_initialize("/etc/iproute2/rt_dsfield", rtnl_rtdsfield_tab->tab);
195 }
196
197 const char* FAST_FUNC rtnl_dsfield_n2a(int id, char *buf)
198 {
199         if (id < 0 || id >= 256) {
200                 sprintf(buf, "%d", id);
201                 return buf;
202         }
203
204         rtnl_rtdsfield_initialize();
205
206         if (rtnl_rtdsfield_tab->tab[id])
207                 return rtnl_rtdsfield_tab->tab[id];
208         /* buf is SPRINT_BSIZE big */
209         sprintf(buf, "0x%02x", id);
210         return buf;
211 }
212
213 int FAST_FUNC rtnl_dsfield_a2n(uint32_t *id, char *arg)
214 {
215         rtnl_rtdsfield_initialize();
216         return rtnl_a2n(rtnl_rtdsfield_tab, id, arg, 16);
217 }
218
219
220 #if ENABLE_FEATURE_IP_RULE
221 static rtnl_tab_t *rtnl_rttable_tab;
222
223 static void rtnl_rttable_initialize(void)
224 {
225         if (rtnl_rtdsfield_tab) return;
226         rtnl_rttable_tab = xzalloc(sizeof(*rtnl_rttable_tab));
227         rtnl_rttable_tab->tab[0] = "unspec";
228         rtnl_rttable_tab->tab[255] = "local";
229         rtnl_rttable_tab->tab[254] = "main";
230         rtnl_rttable_tab->tab[253] = "default";
231         rtnl_tab_initialize("/etc/iproute2/rt_tables", rtnl_rttable_tab->tab);
232 }
233
234 const char* FAST_FUNC rtnl_rttable_n2a(int id, char *buf)
235 {
236         if (id < 0 || id >= 256) {
237                 sprintf(buf, "%d", id);
238                 return buf;
239         }
240
241         rtnl_rttable_initialize();
242
243         if (rtnl_rttable_tab->tab[id])
244                 return rtnl_rttable_tab->tab[id];
245         /* buf is SPRINT_BSIZE big */
246         sprintf(buf, "%d", id);
247         return buf;
248 }
249
250 int FAST_FUNC rtnl_rttable_a2n(uint32_t *id, char *arg)
251 {
252         rtnl_rttable_initialize();
253         return rtnl_a2n(rtnl_rttable_tab, id, arg, 0);
254 }
255
256 #endif