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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"
static void rtnl_tab_initialize(const char *file, const char **tab, int size)
{
char buf[512];
FILE *fp;
fp = fopen(file, "r");
if (!fp)
return;
while (fgets(buf, sizeof(buf), fp)) {
char *p = buf;
int id;
char namebuf[512];
while (*p == ' ' || *p == '\t')
p++;
if (*p == '#' || *p == '\n' || *p == 0)
continue;
if (sscanf(p, "0x%x %s\n", &id, namebuf) != 2
&& sscanf(p, "0x%x %s #", &id, namebuf) != 2
&& sscanf(p, "%d %s\n", &id, namebuf) != 2
&& sscanf(p, "%d %s #", &id, namebuf) != 2
) {
bb_error_msg("database %s is corrupted at %s",
file, p);
return;
}
if (id < 0 || id > size)
continue;
tab[id] = xstrdup(namebuf);
}
fclose(fp);
}
static const char **rtnl_rtprot_tab; /* [256] */
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(256 * sizeof(rtnl_rtprot_tab[0]));
memcpy(rtnl_rtprot_tab, init_tab, sizeof(init_tab));
rtnl_tab_initialize("/etc/iproute2/rt_protos",
rtnl_rtprot_tab, 256);
}
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[id])
return rtnl_rtprot_tab[id];
snprintf(buf, len, "%d", id);
return buf;
}
int rtnl_rtprot_a2n(uint32_t *id, char *arg)
{
static const char *cache = NULL;
static unsigned long res;
int i;
if (cache && strcmp(cache, arg) == 0) {
*id = res;
return 0;
}
rtnl_rtprot_initialize();
for (i = 0; i < 256; i++) {
if (rtnl_rtprot_tab[i] &&
strcmp(rtnl_rtprot_tab[i], arg) == 0) {
cache = rtnl_rtprot_tab[i];
res = i;
*id = res;
return 0;
}
}
res = bb_strtoul(arg, NULL, 0);
if (errno || res > 255)
return -1;
*id = res;
return 0;
}
static const char **rtnl_rtscope_tab; /* [256] */
static void rtnl_rtscope_initialize(void)
{
if (rtnl_rtscope_tab) return;
rtnl_rtscope_tab = xzalloc(256 * sizeof(rtnl_rtscope_tab[0]));
rtnl_rtscope_tab[0] = "global";
rtnl_rtscope_tab[255] = "nowhere";
rtnl_rtscope_tab[254] = "host";
rtnl_rtscope_tab[253] = "link";
rtnl_rtscope_tab[200] = "site";
rtnl_tab_initialize("/etc/iproute2/rt_scopes",
rtnl_rtscope_tab, 256);
}
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[id])
return rtnl_rtscope_tab[id];
snprintf(buf, len, "%d", id);
return buf;
}
int rtnl_rtscope_a2n(uint32_t *id, char *arg)
{
static const char *cache = NULL;
static unsigned long res;
int i;
if (cache && strcmp(cache, arg) == 0) {
*id = res;
return 0;
}
rtnl_rtscope_initialize();
for (i = 0; i < 256; i++) {
if (rtnl_rtscope_tab[i] &&
strcmp(rtnl_rtscope_tab[i], arg) == 0) {
cache = rtnl_rtscope_tab[i];
res = i;
*id = res;
return 0;
}
}
res = bb_strtoul(arg, NULL, 0);
if (errno || res > 255)
return -1;
*id = res;
return 0;
}
static const char **rtnl_rtrealm_tab; /* [256] */
static void rtnl_rtrealm_initialize(void)
{
if (rtnl_rtrealm_tab) return;
rtnl_rtrealm_tab = xzalloc(256 * sizeof(rtnl_rtrealm_tab[0]));
rtnl_rtrealm_tab[0] = "unknown";
rtnl_tab_initialize("/etc/iproute2/rt_realms",
rtnl_rtrealm_tab, 256);
}
int rtnl_rtrealm_a2n(uint32_t *id, char *arg)
{
static const char *cache = NULL;
static unsigned long res;
int i;
if (cache && strcmp(cache, arg) == 0) {
*id = res;
return 0;
}
rtnl_rtrealm_initialize();
for (i = 0; i < 256; i++) {
if (rtnl_rtrealm_tab[i] &&
strcmp(rtnl_rtrealm_tab[i], arg) == 0) {
cache = rtnl_rtrealm_tab[i];
res = i;
*id = res;
return 0;
}
}
res = bb_strtoul(arg, NULL, 0);
if (errno || res > 255)
return -1;
*id = res;
return 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[id])
return rtnl_rtrealm_tab[id];
snprintf(buf, len, "%d", id);
return buf;
}
#endif
static const char **rtnl_rtdsfield_tab; /* [256] */
static void rtnl_rtdsfield_initialize(void)
{
if (rtnl_rtdsfield_tab) return;
rtnl_rtdsfield_tab = xzalloc(256 * sizeof(rtnl_rtdsfield_tab[0]));
rtnl_rtdsfield_tab[0] = "0";
rtnl_tab_initialize("/etc/iproute2/rt_dsfield",
rtnl_rtdsfield_tab, 256);
}
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[id])
return rtnl_rtdsfield_tab[id];
snprintf(buf, len, "0x%02x", id);
return buf;
}
int rtnl_dsfield_a2n(uint32_t *id, char *arg)
{
static const char *cache = NULL;
static unsigned long res;
int i;
if (cache && strcmp(cache, arg) == 0) {
*id = res;
return 0;
}
rtnl_rtdsfield_initialize();
for (i = 0; i < 256; i++) {
if (rtnl_rtdsfield_tab[i] &&
strcmp(rtnl_rtdsfield_tab[i], arg) == 0) {
cache = rtnl_rtdsfield_tab[i];
res = i;
*id = res;
return 0;
}
}
res = bb_strtoul(arg, NULL, 16);
if (errno || res > 255)
return -1;
*id = res;
return 0;
}
#if ENABLE_FEATURE_IP_RULE
static const char **rtnl_rttable_tab; /* [256] */
static void rtnl_rttable_initialize(void)
{
if (rtnl_rtdsfield_tab) return;
rtnl_rttable_tab = xzalloc(256 * sizeof(rtnl_rttable_tab[0]));
rtnl_rttable_tab[0] = "unspec";
rtnl_rttable_tab[255] = "local";
rtnl_rttable_tab[254] = "main";
rtnl_rttable_tab[253] = "default";
rtnl_tab_initialize("/etc/iproute2/rt_tables", rtnl_rttable_tab, 256);
}
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[id])
return rtnl_rttable_tab[id];
snprintf(buf, len, "%d", id);
return buf;
}
int rtnl_rttable_a2n(uint32_t * id, char *arg)
{
static char *cache = NULL;
static unsigned long res;
int i;
if (cache && strcmp(cache, arg) == 0) {
*id = res;
return 0;
}
rtnl_rttable_initialize();
for (i = 0; i < 256; i++) {
if (rtnl_rttable_tab[i] && strcmp(rtnl_rttable_tab[i], arg) == 0) {
cache = (char*)rtnl_rttable_tab[i];
res = i;
*id = res;
return 0;
}
}
i = bb_strtoul(arg, NULL, 0);
if (errno || i > 255)
return -1;
*id = i;
return 0;
}
#endif
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