/* 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.
*
- * 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>
+ * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
*/
-
#include "libbb.h"
#include "rt_names.h"
-static void rtnl_tab_initialize(char *file, const char **tab, int size)
+#define CONFDIR CONFIG_FEATURE_IP_ROUTE_DIR
+
+typedef struct rtnl_tab_t {
+ const char *cached_str;
+ unsigned cached_result;
+ /* upstream version switched to a hash table and removed
+ * id < 256 limit. For now bbox bumps this array size from 256
+ * to 1024. If you plan to change this to a hash table,
+ * consider merging several hash tables we have (for example,
+ * awk has resizable one!
+ */
+#define RT_TABLE_MAX 1023
+ const char *tab[RT_TABLE_MAX+1];
+} rtnl_tab_t;
+
+static void rtnl_tab_initialize(const char *file, const char **tab)
{
- 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;
+ char *token[2];
+ char fullname[sizeof(CONFDIR"/rt_dsfield") + 8];
+ parser_t *parser;
+
+ sprintf(fullname, CONFDIR"/rt_%s", file);
+ parser = config_open2(fullname, fopen_for_read);
+ while (config_read(parser, token, 2, 2, "# \t", PARSE_NORMAL)) {
+ unsigned id = bb_strtou(token[0], NULL, 0);
+ if (id > RT_TABLE_MAX) {
+ bb_error_msg("database %s is corrupted at line %d",
+ file, parser->lineno);
+ break;
}
+ tab[id] = xstrdup(token[1]);
+ }
+ config_close(parser);
+}
- if (id < 0 || id > size)
- continue;
+static int rtnl_a2n(rtnl_tab_t *tab, uint32_t *id, const char *arg, int base)
+{
+ unsigned i;
- tab[id] = xstrdup(namebuf);
+ if (tab->cached_str && strcmp(tab->cached_str, arg) == 0) {
+ *id = tab->cached_result;
+ return 0;
+ }
+
+ for (i = 0; i <= RT_TABLE_MAX; 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;
+ }
}
- fclose(fp);
+
+ i = bb_strtou(arg, NULL, base);
+ if (i > RT_TABLE_MAX)
+ return -1;
+ *id = i;
+ return 0;
}
-static const char **rtnl_rtprot_tab; /* [256] */
+static rtnl_tab_t *rtnl_rtprot_tab;
static void rtnl_rtprot_initialize(void)
{
"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);
-}
+ 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("protos", rtnl_rtprot_tab->tab);
+}
-const char* rtnl_rtprot_n2a(int id, char *buf, int len)
+#if 0 /* UNUSED */
+const char* FAST_FUNC rtnl_rtprot_n2a(int id)
{
- if (id < 0 || id >= 256) {
- snprintf(buf, len, "%d", id);
- return buf;
+ if (id < 0 || id > RT_TABLE_MAX) {
+ return itoa(id);
}
rtnl_rtprot_initialize();
- if (rtnl_rtprot_tab[id])
- return rtnl_rtprot_tab[id];
- snprintf(buf, len, "%d", id);
- return buf;
+ if (rtnl_rtprot_tab->tab[id])
+ return rtnl_rtprot_tab->tab[id];
+ return itoa(id);
}
+#endif
-int rtnl_rtprot_a2n(uint32_t *id, char *arg)
+int FAST_FUNC 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;
+ return rtnl_a2n(rtnl_rtprot_tab, id, arg, 0);
}
-static const char **rtnl_rtscope_tab; /* [256] */
+static rtnl_tab_t *rtnl_rtscope_tab;
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);
+ 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("scopes", rtnl_rtscope_tab->tab);
}
-
-const char* rtnl_rtscope_n2a(int id, char *buf, int len)
+const char* FAST_FUNC rtnl_rtscope_n2a(int id)
{
- if (id < 0 || id >= 256) {
- snprintf(buf, len, "%d", id);
- return buf;
+ if (id < 0 || id > RT_TABLE_MAX) {
+ return itoa(id);
}
rtnl_rtscope_initialize();
- if (rtnl_rtscope_tab[id])
- return rtnl_rtscope_tab[id];
- snprintf(buf, len, "%d", id);
- return buf;
+ if (rtnl_rtscope_tab->tab[id])
+ return rtnl_rtscope_tab->tab[id];
+ return itoa(id);
}
-int rtnl_rtscope_a2n(uint32_t *id, char *arg)
+int FAST_FUNC 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;
+ return rtnl_a2n(rtnl_rtscope_tab, id, arg, 0);
}
-static const char **rtnl_rtrealm_tab; /* [256] */
+static rtnl_tab_t *rtnl_rtrealm_tab;
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);
+ rtnl_rtrealm_tab = xzalloc(sizeof(*rtnl_rtrealm_tab));
+ rtnl_rtrealm_tab->tab[0] = "unknown";
+ rtnl_tab_initialize("realms", rtnl_rtrealm_tab->tab);
}
-
-int rtnl_rtrealm_a2n(uint32_t *id, char *arg)
+int FAST_FUNC 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;
+ 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)
+const char* FAST_FUNC rtnl_rtrealm_n2a(int id)
{
- if (id < 0 || id >= 256) {
- snprintf(buf, len, "%d", id);
- return buf;
+ if (id < 0 || id > RT_TABLE_MAX) {
+ return itoa(id);
}
rtnl_rtrealm_initialize();
- if (rtnl_rtrealm_tab[id])
- return rtnl_rtrealm_tab[id];
- snprintf(buf, len, "%d", id);
- return buf;
+ if (rtnl_rtrealm_tab->tab[id])
+ return rtnl_rtrealm_tab->tab[id];
+ return itoa(id);
}
#endif
-static const char **rtnl_rtdsfield_tab; /* [256] */
+static rtnl_tab_t *rtnl_rtdsfield_tab;
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);
+ rtnl_rtdsfield_tab = xzalloc(sizeof(*rtnl_rtdsfield_tab));
+ rtnl_rtdsfield_tab->tab[0] = "0";
+ rtnl_tab_initialize("dsfield", rtnl_rtdsfield_tab->tab);
}
-
-const char * rtnl_dsfield_n2a(int id, char *buf, int len)
+const char* FAST_FUNC rtnl_dsfield_n2a(int id)
{
- if (id < 0 || id >= 256) {
- snprintf(buf, len, "%d", id);
- return buf;
+ if (id < 0 || id > RT_TABLE_MAX) {
+ return itoa(id);
}
rtnl_rtdsfield_initialize();
- if (rtnl_rtdsfield_tab[id])
- return rtnl_rtdsfield_tab[id];
- snprintf(buf, len, "0x%02x", id);
- return buf;
+ if (rtnl_rtdsfield_tab->tab[id])
+ return rtnl_rtdsfield_tab->tab[id];
+ return itoa(id);
}
-
-int rtnl_dsfield_a2n(uint32_t *id, char *arg)
+int FAST_FUNC 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;
+ return rtnl_a2n(rtnl_rtdsfield_tab, id, arg, 16);
}
#if ENABLE_FEATURE_IP_RULE
-static const char **rtnl_rttable_tab; /* [256] */
+static rtnl_tab_t *rtnl_rttable_tab;
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);
-}
+ if (rtnl_rttable_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("tables", rtnl_rttable_tab->tab);
+}
-const char *rtnl_rttable_n2a(int id, char *buf, int len)
+const char* FAST_FUNC rtnl_rttable_n2a(int id)
{
- if (id < 0 || id >= 256) {
- snprintf(buf, len, "%d", id);
- return buf;
+ if (id < 0 || id > RT_TABLE_MAX) {
+ return itoa(id);
}
rtnl_rttable_initialize();
- if (rtnl_rttable_tab[id])
- return rtnl_rttable_tab[id];
- snprintf(buf, len, "%d", id);
- return buf;
+ if (rtnl_rttable_tab->tab[id])
+ return rtnl_rttable_tab->tab[id];
+ return itoa(id);
}
-int rtnl_rttable_a2n(uint32_t * id, char *arg)
+int FAST_FUNC 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;
+ return rtnl_a2n(rtnl_rttable_tab, id, arg, 0);
}
#endif