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/* vi: set sw=4 ts=4: */
/*
* rt_names.c rtnetlink names DB.
*
* 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 "libbb.h"
#include "rt_names.h"
typedef struct rtnl_tab_t {
const char *cached_str;
unsigned cached_result;
const char *tab[256];
} rtnl_tab_t;
static void rtnl_tab_initialize(const char *file, const char **tab)
{
char *token[2];
parser_t *parser = config_open2(file, fopen_for_read);
while (config_read(parser, token, 2, 2, "# \t", PARSE_NORMAL)) {
unsigned id = bb_strtou(token[0], NULL, 0);
if (id > 256) {
bb_error_msg("database %s is corrupted at line %d",
file, parser->lineno);
break;
}
tab[id] = xstrdup(token[1]);
}
config_close(parser);
}
static int rtnl_a2n(rtnl_tab_t *tab, uint32_t *id, const char *arg, int base)
{
unsigned i;
if (tab->cached_str && strcmp(tab->cached_str, arg) == 0) {
*id = tab->cached_result;
return 0;
}
for (i = 0; i < 256; i++) {
if (tab->tab[i]
&& strcmp(tab->tab[i], arg) == 0
) {
tab->cached_str = tab->tab[i];
tab->cached_result = i;
*id = i;
return 0;
}
}
i = bb_strtou(arg, NULL, base);
if (i > 255)
return -1;
*id = i;
return 0;
}
static rtnl_tab_t *rtnl_rtprot_tab;
static void rtnl_rtprot_initialize(void)
{
static const char *const init_tab[] = {
"none",
"redirect",
"kernel",
"boot",
"static",
NULL,
NULL,
NULL,
"gated",
"ra",
"mrt",
"zebra",
"bird",
};
if (rtnl_rtprot_tab)
return;
rtnl_rtprot_tab = xzalloc(sizeof(*rtnl_rtprot_tab));
memcpy(rtnl_rtprot_tab->tab, init_tab, sizeof(init_tab));
rtnl_tab_initialize("/etc/iproute2/rt_protos", rtnl_rtprot_tab->tab);
}
const char* rtnl_rtprot_n2a(int id, char *buf, int len)
{
if (id < 0 || id >= 256) {
snprintf(buf, len, "%d", id);
return buf;
}
rtnl_rtprot_initialize();
if (rtnl_rtprot_tab->tab[id])
return rtnl_rtprot_tab->tab[id];
snprintf(buf, len, "%d", id);
return buf;
}
int rtnl_rtprot_a2n(uint32_t *id, char *arg)
{
rtnl_rtprot_initialize();
return rtnl_a2n(rtnl_rtprot_tab, id, arg, 0);
}
static rtnl_tab_t *rtnl_rtscope_tab;
static void rtnl_rtscope_initialize(void)
{
if (rtnl_rtscope_tab)
return;
rtnl_rtscope_tab = xzalloc(sizeof(*rtnl_rtscope_tab));
rtnl_rtscope_tab->tab[0] = "global";
rtnl_rtscope_tab->tab[255] = "nowhere";
rtnl_rtscope_tab->tab[254] = "host";
rtnl_rtscope_tab->tab[253] = "link";
rtnl_rtscope_tab->tab[200] = "site";
rtnl_tab_initialize("/etc/iproute2/rt_scopes", rtnl_rtscope_tab->tab);
}
const char* rtnl_rtscope_n2a(int id, char *buf, int len)
{
if (id < 0 || id >= 256) {
snprintf(buf, len, "%d", id);
return buf;
}
rtnl_rtscope_initialize();
if (rtnl_rtscope_tab->tab[id])
return rtnl_rtscope_tab->tab[id];
snprintf(buf, len, "%d", id);
return buf;
}
int rtnl_rtscope_a2n(uint32_t *id, char *arg)
{
rtnl_rtscope_initialize();
return rtnl_a2n(rtnl_rtscope_tab, id, arg, 0);
}
static rtnl_tab_t *rtnl_rtrealm_tab;
static void rtnl_rtrealm_initialize(void)
{
if (rtnl_rtrealm_tab) return;
rtnl_rtrealm_tab = xzalloc(sizeof(*rtnl_rtrealm_tab));
rtnl_rtrealm_tab->tab[0] = "unknown";
rtnl_tab_initialize("/etc/iproute2/rt_realms", rtnl_rtrealm_tab->tab);
}
int rtnl_rtrealm_a2n(uint32_t *id, char *arg)
{
rtnl_rtrealm_initialize();
return rtnl_a2n(rtnl_rtrealm_tab, id, arg, 0);
}
#if ENABLE_FEATURE_IP_RULE
const char* rtnl_rtrealm_n2a(int id, char *buf, int len)
{
if (id < 0 || id >= 256) {
snprintf(buf, len, "%d", id);
return buf;
}
rtnl_rtrealm_initialize();
if (rtnl_rtrealm_tab->tab[id])
return rtnl_rtrealm_tab->tab[id];
snprintf(buf, len, "%d", id);
return buf;
}
#endif
static rtnl_tab_t *rtnl_rtdsfield_tab;
static void rtnl_rtdsfield_initialize(void)
{
if (rtnl_rtdsfield_tab) return;
rtnl_rtdsfield_tab = xzalloc(sizeof(*rtnl_rtdsfield_tab));
rtnl_rtdsfield_tab->tab[0] = "0";
rtnl_tab_initialize("/etc/iproute2/rt_dsfield", rtnl_rtdsfield_tab->tab);
}
const char * rtnl_dsfield_n2a(int id, char *buf, int len)
{
if (id < 0 || id >= 256) {
snprintf(buf, len, "%d", id);
return buf;
}
rtnl_rtdsfield_initialize();
if (rtnl_rtdsfield_tab->tab[id])
return rtnl_rtdsfield_tab->tab[id];
snprintf(buf, len, "0x%02x", id);
return buf;
}
int rtnl_dsfield_a2n(uint32_t *id, char *arg)
{
rtnl_rtdsfield_initialize();
return rtnl_a2n(rtnl_rtdsfield_tab, id, arg, 16);
}
#if ENABLE_FEATURE_IP_RULE
static rtnl_tab_t *rtnl_rttable_tab;
static void rtnl_rttable_initialize(void)
{
if (rtnl_rtdsfield_tab) return;
rtnl_rttable_tab = xzalloc(sizeof(*rtnl_rttable_tab));
rtnl_rttable_tab->tab[0] = "unspec";
rtnl_rttable_tab->tab[255] = "local";
rtnl_rttable_tab->tab[254] = "main";
rtnl_rttable_tab->tab[253] = "default";
rtnl_tab_initialize("/etc/iproute2/rt_tables", rtnl_rttable_tab->tab);
}
const char *rtnl_rttable_n2a(int id, char *buf, int len)
{
if (id < 0 || id >= 256) {
snprintf(buf, len, "%d", id);
return buf;
}
rtnl_rttable_initialize();
if (rtnl_rttable_tab->tab[id])
return rtnl_rttable_tab->tab[id];
snprintf(buf, len, "%d", id);
return buf;
}
int rtnl_rttable_a2n(uint32_t *id, char *arg)
{
rtnl_rttable_initialize();
return rtnl_a2n(rtnl_rttable_tab, id, arg, 0);
}
#endif
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