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text data bss dec hex filename 936892 932 17676 955500 e946c busybox_old 936843 932 17676 955451 e943b busybox_unstripped Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
258 lines
5.5 KiB
C
258 lines
5.5 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
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*/
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#include "libbb.h"
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#include "rt_names.h"
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#define CONFDIR CONFIG_FEATURE_IP_ROUTE_DIR
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typedef struct rtnl_tab_t {
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const char *cached_str;
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unsigned cached_result;
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/* upstream version switched to a hash table and removed
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* id < 256 limit. For now bbox bumps this array size from 256
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* to 1024. If you plan to change this to a hash table,
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* consider merging several hash tables we have (for example,
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* awk has resizable one!
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*/
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#define RT_TABLE_MAX 1023
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const char *tab[RT_TABLE_MAX+1];
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} rtnl_tab_t;
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static void rtnl_tab_initialize(const char *file, const char **tab)
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{
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char *token[2];
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char fullname[sizeof(CONFDIR"/rt_dsfield") + 8];
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parser_t *parser;
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sprintf(fullname, CONFDIR"/rt_%s", file);
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parser = config_open2(fullname, fopen_for_read);
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while (config_read(parser, token, 2, 2, "# \t", PARSE_NORMAL)) {
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unsigned id = bb_strtou(token[0], NULL, 0);
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if (id > RT_TABLE_MAX) {
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bb_error_msg("database %s is corrupted at line %d",
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file, parser->lineno);
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break;
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}
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tab[id] = xstrdup(token[1]);
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}
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config_close(parser);
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}
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static int rtnl_a2n(rtnl_tab_t *tab, uint32_t *id, const char *arg, int base)
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{
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unsigned i;
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if (tab->cached_str && strcmp(tab->cached_str, arg) == 0) {
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*id = tab->cached_result;
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return 0;
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}
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for (i = 0; i <= RT_TABLE_MAX; i++) {
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if (tab->tab[i]
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&& strcmp(tab->tab[i], arg) == 0
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) {
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tab->cached_str = tab->tab[i];
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tab->cached_result = i;
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*id = i;
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return 0;
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}
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}
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i = bb_strtou(arg, NULL, base);
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if (i > RT_TABLE_MAX)
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return -1;
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*id = i;
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return 0;
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}
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static rtnl_tab_t *rtnl_rtprot_tab;
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static void rtnl_rtprot_initialize(void)
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{
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static const char *const init_tab[] = {
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"none",
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"redirect",
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"kernel",
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"boot",
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"static",
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NULL,
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NULL,
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NULL,
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"gated",
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"ra",
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"mrt",
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"zebra",
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"bird",
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};
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if (rtnl_rtprot_tab)
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return;
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rtnl_rtprot_tab = xzalloc(sizeof(*rtnl_rtprot_tab));
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memcpy(rtnl_rtprot_tab->tab, init_tab, sizeof(init_tab));
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rtnl_tab_initialize("protos", rtnl_rtprot_tab->tab);
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}
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#if 0 /* UNUSED */
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const char* FAST_FUNC rtnl_rtprot_n2a(int id)
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{
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if (id < 0 || id > RT_TABLE_MAX) {
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return itoa(id);
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}
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rtnl_rtprot_initialize();
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if (rtnl_rtprot_tab->tab[id])
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return rtnl_rtprot_tab->tab[id];
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return itoa(id);
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}
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#endif
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int FAST_FUNC rtnl_rtprot_a2n(uint32_t *id, char *arg)
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{
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rtnl_rtprot_initialize();
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return rtnl_a2n(rtnl_rtprot_tab, id, arg, 0);
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}
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static rtnl_tab_t *rtnl_rtscope_tab;
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static void rtnl_rtscope_initialize(void)
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{
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if (rtnl_rtscope_tab)
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return;
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rtnl_rtscope_tab = xzalloc(sizeof(*rtnl_rtscope_tab));
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rtnl_rtscope_tab->tab[0] = "global";
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rtnl_rtscope_tab->tab[255] = "nowhere";
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rtnl_rtscope_tab->tab[254] = "host";
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rtnl_rtscope_tab->tab[253] = "link";
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rtnl_rtscope_tab->tab[200] = "site";
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rtnl_tab_initialize("scopes", rtnl_rtscope_tab->tab);
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}
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const char* FAST_FUNC rtnl_rtscope_n2a(int id)
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{
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if (id < 0 || id > RT_TABLE_MAX) {
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return itoa(id);
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}
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rtnl_rtscope_initialize();
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if (rtnl_rtscope_tab->tab[id])
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return rtnl_rtscope_tab->tab[id];
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return itoa(id);
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}
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int FAST_FUNC rtnl_rtscope_a2n(uint32_t *id, char *arg)
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{
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rtnl_rtscope_initialize();
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return rtnl_a2n(rtnl_rtscope_tab, id, arg, 0);
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}
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static rtnl_tab_t *rtnl_rtrealm_tab;
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static void rtnl_rtrealm_initialize(void)
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{
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if (rtnl_rtrealm_tab) return;
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rtnl_rtrealm_tab = xzalloc(sizeof(*rtnl_rtrealm_tab));
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rtnl_rtrealm_tab->tab[0] = "unknown";
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rtnl_tab_initialize("realms", rtnl_rtrealm_tab->tab);
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}
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int FAST_FUNC rtnl_rtrealm_a2n(uint32_t *id, char *arg)
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{
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rtnl_rtrealm_initialize();
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return rtnl_a2n(rtnl_rtrealm_tab, id, arg, 0);
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}
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#if ENABLE_FEATURE_IP_RULE
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const char* FAST_FUNC rtnl_rtrealm_n2a(int id)
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{
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if (id < 0 || id > RT_TABLE_MAX) {
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return itoa(id);
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}
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rtnl_rtrealm_initialize();
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if (rtnl_rtrealm_tab->tab[id])
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return rtnl_rtrealm_tab->tab[id];
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return itoa(id);
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}
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#endif
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static rtnl_tab_t *rtnl_rtdsfield_tab;
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static void rtnl_rtdsfield_initialize(void)
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{
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if (rtnl_rtdsfield_tab) return;
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rtnl_rtdsfield_tab = xzalloc(sizeof(*rtnl_rtdsfield_tab));
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rtnl_rtdsfield_tab->tab[0] = "0";
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rtnl_tab_initialize("dsfield", rtnl_rtdsfield_tab->tab);
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}
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const char* FAST_FUNC rtnl_dsfield_n2a(int id)
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{
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if (id < 0 || id > RT_TABLE_MAX) {
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return itoa(id);
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}
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rtnl_rtdsfield_initialize();
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if (rtnl_rtdsfield_tab->tab[id])
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return rtnl_rtdsfield_tab->tab[id];
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return itoa(id);
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}
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int FAST_FUNC rtnl_dsfield_a2n(uint32_t *id, char *arg)
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{
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rtnl_rtdsfield_initialize();
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return rtnl_a2n(rtnl_rtdsfield_tab, id, arg, 16);
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}
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#if ENABLE_FEATURE_IP_RULE
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static rtnl_tab_t *rtnl_rttable_tab;
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static void rtnl_rttable_initialize(void)
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{
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if (rtnl_rttable_tab)
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return;
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rtnl_rttable_tab = xzalloc(sizeof(*rtnl_rttable_tab));
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rtnl_rttable_tab->tab[0] = "unspec";
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rtnl_rttable_tab->tab[255] = "local";
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rtnl_rttable_tab->tab[254] = "main";
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rtnl_rttable_tab->tab[253] = "default";
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rtnl_tab_initialize("tables", rtnl_rttable_tab->tab);
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}
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const char* FAST_FUNC rtnl_rttable_n2a(int id)
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{
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if (id < 0 || id > RT_TABLE_MAX) {
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return itoa(id);
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}
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rtnl_rttable_initialize();
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if (rtnl_rttable_tab->tab[id])
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return rtnl_rttable_tab->tab[id];
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return itoa(id);
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}
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int FAST_FUNC rtnl_rttable_a2n(uint32_t *id, char *arg)
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{
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rtnl_rttable_initialize();
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return rtnl_a2n(rtnl_rttable_tab, id, arg, 0);
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}
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#endif
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