mirror of
https://git.kernel.org/pub/scm/network/iproute2/iproute2.git
synced 2024-11-15 14:05:22 +08:00
913352fe54
Only arpd uses syslog Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
677 lines
13 KiB
C
677 lines
13 KiB
C
/*
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* rt_names.c rtnetlink names DB.
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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 <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <string.h>
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#include <sys/time.h>
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#include <sys/socket.h>
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#include <dirent.h>
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#include <limits.h>
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#include <asm/types.h>
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#include <linux/rtnetlink.h>
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#include "rt_names.h"
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#include "utils.h"
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#define NAME_MAX_LEN 512
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struct rtnl_hash_entry {
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struct rtnl_hash_entry *next;
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const char *name;
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unsigned int id;
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};
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static int fread_id_name(FILE *fp, int *id, char *namebuf)
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{
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char buf[NAME_MAX_LEN];
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while (fgets(buf, sizeof(buf), fp)) {
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char *p = buf;
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while (*p == ' ' || *p == '\t')
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p++;
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if (*p == '#' || *p == '\n' || *p == 0)
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continue;
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if (sscanf(p, "0x%x %s\n", id, namebuf) != 2 &&
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sscanf(p, "0x%x %s #", id, namebuf) != 2 &&
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sscanf(p, "%d %s\n", id, namebuf) != 2 &&
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sscanf(p, "%d %s #", id, namebuf) != 2) {
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strcpy(namebuf, p);
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return -1;
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}
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return 1;
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}
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return 0;
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}
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static void
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rtnl_hash_initialize(const char *file, struct rtnl_hash_entry **hash, int size)
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{
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struct rtnl_hash_entry *entry;
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FILE *fp;
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int id;
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char namebuf[NAME_MAX_LEN] = {0};
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int ret;
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fp = fopen(file, "r");
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if (!fp)
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return;
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while ((ret = fread_id_name(fp, &id, &namebuf[0]))) {
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if (ret == -1) {
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fprintf(stderr, "Database %s is corrupted at %s\n",
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file, namebuf);
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fclose(fp);
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return;
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}
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if (id < 0)
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continue;
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entry = malloc(sizeof(*entry));
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entry->id = id;
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entry->name = strdup(namebuf);
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entry->next = hash[id & (size - 1)];
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hash[id & (size - 1)] = entry;
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}
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fclose(fp);
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}
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static void rtnl_tab_initialize(const char *file, char **tab, int size)
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{
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FILE *fp;
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int id;
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char namebuf[NAME_MAX_LEN] = {0};
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int ret;
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fp = fopen(file, "r");
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if (!fp)
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return;
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while ((ret = fread_id_name(fp, &id, &namebuf[0]))) {
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if (ret == -1) {
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fprintf(stderr, "Database %s is corrupted at %s\n",
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file, namebuf);
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fclose(fp);
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return;
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}
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if (id < 0 || id > size)
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continue;
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tab[id] = strdup(namebuf);
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}
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fclose(fp);
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}
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static char *rtnl_rtprot_tab[256] = {
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[RTPROT_UNSPEC] = "unspec",
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[RTPROT_REDIRECT] = "redirect",
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[RTPROT_KERNEL] = "kernel",
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[RTPROT_BOOT] = "boot",
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[RTPROT_STATIC] = "static",
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[RTPROT_GATED] = "gated",
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[RTPROT_RA] = "ra",
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[RTPROT_MRT] = "mrt",
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[RTPROT_ZEBRA] = "zebra",
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[RTPROT_BIRD] = "bird",
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[RTPROT_BABEL] = "babel",
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[RTPROT_DNROUTED] = "dnrouted",
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[RTPROT_XORP] = "xorp",
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[RTPROT_NTK] = "ntk",
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[RTPROT_DHCP] = "dhcp",
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};
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static int rtnl_rtprot_init;
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static void rtnl_rtprot_initialize(void)
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{
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struct dirent *de;
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DIR *d;
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rtnl_rtprot_init = 1;
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rtnl_tab_initialize(CONFDIR "/rt_protos",
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rtnl_rtprot_tab, 256);
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d = opendir(CONFDIR "/rt_protos.d");
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if (!d)
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return;
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while ((de = readdir(d)) != NULL) {
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char path[PATH_MAX];
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size_t len;
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if (*de->d_name == '.')
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continue;
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/* only consider filenames ending in '.conf' */
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len = strlen(de->d_name);
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if (len <= 5)
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continue;
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if (strcmp(de->d_name + len - 5, ".conf"))
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continue;
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snprintf(path, sizeof(path), CONFDIR "/rt_protos.d/%s",
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de->d_name);
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rtnl_tab_initialize(path, rtnl_rtprot_tab, 256);
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}
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closedir(d);
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}
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const char *rtnl_rtprot_n2a(int id, char *buf, int len)
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{
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if (id < 0 || id >= 256) {
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snprintf(buf, len, "%u", id);
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return buf;
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}
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if (!rtnl_rtprot_tab[id]) {
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if (!rtnl_rtprot_init)
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rtnl_rtprot_initialize();
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}
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if (rtnl_rtprot_tab[id])
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return rtnl_rtprot_tab[id];
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snprintf(buf, len, "%u", id);
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return buf;
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}
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int rtnl_rtprot_a2n(__u32 *id, const char *arg)
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{
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static char *cache;
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static unsigned long res;
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char *end;
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int i;
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if (cache && strcmp(cache, arg) == 0) {
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*id = res;
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return 0;
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}
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if (!rtnl_rtprot_init)
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rtnl_rtprot_initialize();
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for (i = 0; i < 256; i++) {
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if (rtnl_rtprot_tab[i] &&
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strcmp(rtnl_rtprot_tab[i], arg) == 0) {
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cache = rtnl_rtprot_tab[i];
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res = i;
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*id = res;
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return 0;
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}
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}
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res = strtoul(arg, &end, 0);
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if (!end || end == arg || *end || res > 255)
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return -1;
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*id = res;
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return 0;
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}
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static char *rtnl_rtscope_tab[256] = {
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[RT_SCOPE_UNIVERSE] = "global",
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[RT_SCOPE_NOWHERE] = "nowhere",
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[RT_SCOPE_HOST] = "host",
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[RT_SCOPE_LINK] = "link",
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[RT_SCOPE_SITE] = "site",
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};
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static int rtnl_rtscope_init;
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static void rtnl_rtscope_initialize(void)
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{
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rtnl_rtscope_init = 1;
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rtnl_tab_initialize(CONFDIR "/rt_scopes",
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rtnl_rtscope_tab, 256);
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}
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const char *rtnl_rtscope_n2a(int id, char *buf, int len)
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{
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if (id < 0 || id >= 256) {
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snprintf(buf, len, "%d", id);
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return buf;
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}
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if (!rtnl_rtscope_tab[id]) {
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if (!rtnl_rtscope_init)
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rtnl_rtscope_initialize();
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}
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if (rtnl_rtscope_tab[id])
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return rtnl_rtscope_tab[id];
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snprintf(buf, len, "%d", id);
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return buf;
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}
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int rtnl_rtscope_a2n(__u32 *id, const char *arg)
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{
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static const char *cache;
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static unsigned long res;
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char *end;
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int i;
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if (cache && strcmp(cache, arg) == 0) {
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*id = res;
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return 0;
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}
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if (!rtnl_rtscope_init)
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rtnl_rtscope_initialize();
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for (i = 0; i < 256; i++) {
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if (rtnl_rtscope_tab[i] &&
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strcmp(rtnl_rtscope_tab[i], arg) == 0) {
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cache = rtnl_rtscope_tab[i];
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res = i;
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*id = res;
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return 0;
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}
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}
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res = strtoul(arg, &end, 0);
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if (!end || end == arg || *end || res > 255)
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return -1;
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*id = res;
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return 0;
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}
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static char *rtnl_rtrealm_tab[256] = {
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"unknown",
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};
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static int rtnl_rtrealm_init;
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static void rtnl_rtrealm_initialize(void)
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{
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rtnl_rtrealm_init = 1;
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rtnl_tab_initialize(CONFDIR "/rt_realms",
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rtnl_rtrealm_tab, 256);
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}
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const char *rtnl_rtrealm_n2a(int id, char *buf, int len)
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{
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if (id < 0 || id >= 256) {
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snprintf(buf, len, "%d", id);
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return buf;
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}
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if (!rtnl_rtrealm_tab[id]) {
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if (!rtnl_rtrealm_init)
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rtnl_rtrealm_initialize();
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}
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if (rtnl_rtrealm_tab[id])
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return rtnl_rtrealm_tab[id];
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snprintf(buf, len, "%d", id);
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return buf;
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}
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int rtnl_rtrealm_a2n(__u32 *id, const char *arg)
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{
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static char *cache;
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static unsigned long res;
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char *end;
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int i;
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if (cache && strcmp(cache, arg) == 0) {
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*id = res;
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return 0;
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}
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if (!rtnl_rtrealm_init)
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rtnl_rtrealm_initialize();
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for (i = 0; i < 256; i++) {
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if (rtnl_rtrealm_tab[i] &&
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strcmp(rtnl_rtrealm_tab[i], arg) == 0) {
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cache = rtnl_rtrealm_tab[i];
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res = i;
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*id = res;
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return 0;
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}
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}
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res = strtoul(arg, &end, 0);
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if (!end || end == arg || *end || res > 255)
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return -1;
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*id = res;
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return 0;
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}
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static struct rtnl_hash_entry dflt_table_entry = { .name = "default" };
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static struct rtnl_hash_entry main_table_entry = { .name = "main" };
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static struct rtnl_hash_entry local_table_entry = { .name = "local" };
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static struct rtnl_hash_entry *rtnl_rttable_hash[256] = {
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[RT_TABLE_DEFAULT] = &dflt_table_entry,
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[RT_TABLE_MAIN] = &main_table_entry,
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[RT_TABLE_LOCAL] = &local_table_entry,
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};
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static int rtnl_rttable_init;
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static void rtnl_rttable_initialize(void)
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{
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struct dirent *de;
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DIR *d;
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int i;
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rtnl_rttable_init = 1;
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for (i = 0; i < 256; i++) {
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if (rtnl_rttable_hash[i])
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rtnl_rttable_hash[i]->id = i;
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}
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rtnl_hash_initialize(CONFDIR "/rt_tables",
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rtnl_rttable_hash, 256);
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d = opendir(CONFDIR "/rt_tables.d");
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if (!d)
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return;
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while ((de = readdir(d)) != NULL) {
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char path[PATH_MAX];
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size_t len;
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if (*de->d_name == '.')
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continue;
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/* only consider filenames ending in '.conf' */
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len = strlen(de->d_name);
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if (len <= 5)
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continue;
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if (strcmp(de->d_name + len - 5, ".conf"))
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continue;
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snprintf(path, sizeof(path),
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CONFDIR "/rt_tables.d/%s", de->d_name);
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rtnl_hash_initialize(path, rtnl_rttable_hash, 256);
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}
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closedir(d);
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}
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const char *rtnl_rttable_n2a(__u32 id, char *buf, int len)
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{
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struct rtnl_hash_entry *entry;
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if (!rtnl_rttable_init)
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rtnl_rttable_initialize();
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entry = rtnl_rttable_hash[id & 255];
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while (entry && entry->id != id)
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entry = entry->next;
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if (entry)
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return entry->name;
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snprintf(buf, len, "%u", id);
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return buf;
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}
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int rtnl_rttable_a2n(__u32 *id, const char *arg)
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{
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static const char *cache;
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static unsigned long res;
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struct rtnl_hash_entry *entry;
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char *end;
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unsigned long i;
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if (cache && strcmp(cache, arg) == 0) {
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*id = res;
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return 0;
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}
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if (!rtnl_rttable_init)
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rtnl_rttable_initialize();
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for (i = 0; i < 256; i++) {
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entry = rtnl_rttable_hash[i];
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while (entry && strcmp(entry->name, arg))
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entry = entry->next;
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if (entry) {
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cache = entry->name;
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res = entry->id;
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*id = res;
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return 0;
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}
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}
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i = strtoul(arg, &end, 0);
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if (!end || end == arg || *end || 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 char *rtnl_rtdsfield_tab[256] = {
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"0",
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};
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static int rtnl_rtdsfield_init;
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static void rtnl_rtdsfield_initialize(void)
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{
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rtnl_rtdsfield_init = 1;
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rtnl_tab_initialize(CONFDIR "/rt_dsfield",
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rtnl_rtdsfield_tab, 256);
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}
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const char *rtnl_dsfield_n2a(int id, char *buf, int len)
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{
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if (id < 0 || id >= 256) {
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snprintf(buf, len, "%d", id);
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return buf;
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}
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if (!rtnl_rtdsfield_tab[id]) {
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if (!rtnl_rtdsfield_init)
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rtnl_rtdsfield_initialize();
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}
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if (rtnl_rtdsfield_tab[id])
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return rtnl_rtdsfield_tab[id];
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snprintf(buf, len, "0x%02x", id);
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return buf;
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}
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int rtnl_dsfield_a2n(__u32 *id, const char *arg)
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{
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static char *cache;
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static unsigned long res;
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char *end;
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int i;
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if (cache && strcmp(cache, arg) == 0) {
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*id = res;
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return 0;
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}
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if (!rtnl_rtdsfield_init)
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rtnl_rtdsfield_initialize();
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for (i = 0; i < 256; i++) {
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if (rtnl_rtdsfield_tab[i] &&
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strcmp(rtnl_rtdsfield_tab[i], arg) == 0) {
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cache = rtnl_rtdsfield_tab[i];
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res = i;
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*id = res;
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return 0;
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}
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}
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res = strtoul(arg, &end, 16);
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if (!end || end == arg || *end || res > 255)
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return -1;
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*id = res;
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return 0;
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}
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static struct rtnl_hash_entry dflt_group_entry = {
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.id = 0, .name = "default"
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};
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static struct rtnl_hash_entry *rtnl_group_hash[256] = {
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[0] = &dflt_group_entry,
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};
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static int rtnl_group_init;
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static void rtnl_group_initialize(void)
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{
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rtnl_group_init = 1;
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rtnl_hash_initialize(CONFDIR "/group",
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rtnl_group_hash, 256);
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}
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int rtnl_group_a2n(int *id, const char *arg)
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{
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static const char *cache;
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static unsigned long res;
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struct rtnl_hash_entry *entry;
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char *end;
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int i;
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if (cache && strcmp(cache, arg) == 0) {
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*id = res;
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return 0;
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}
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if (!rtnl_group_init)
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rtnl_group_initialize();
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for (i = 0; i < 256; i++) {
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entry = rtnl_group_hash[i];
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while (entry && strcmp(entry->name, arg))
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entry = entry->next;
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if (entry) {
|
|
cache = entry->name;
|
|
res = entry->id;
|
|
*id = res;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
i = strtol(arg, &end, 0);
|
|
if (!end || end == arg || *end || i < 0)
|
|
return -1;
|
|
*id = i;
|
|
return 0;
|
|
}
|
|
|
|
const char *rtnl_group_n2a(int id, char *buf, int len)
|
|
{
|
|
struct rtnl_hash_entry *entry;
|
|
int i;
|
|
|
|
if (!rtnl_group_init)
|
|
rtnl_group_initialize();
|
|
|
|
for (i = 0; i < 256; i++) {
|
|
entry = rtnl_group_hash[i];
|
|
|
|
while (entry) {
|
|
if (entry->id == id)
|
|
return entry->name;
|
|
entry = entry->next;
|
|
}
|
|
}
|
|
|
|
snprintf(buf, len, "%d", id);
|
|
return buf;
|
|
}
|
|
|
|
static char *nl_proto_tab[256] = {
|
|
[NETLINK_ROUTE] = "rtnl",
|
|
[NETLINK_UNUSED] = "unused",
|
|
[NETLINK_USERSOCK] = "usersock",
|
|
[NETLINK_FIREWALL] = "fw",
|
|
[NETLINK_SOCK_DIAG] = "tcpdiag",
|
|
[NETLINK_NFLOG] = "nflog",
|
|
[NETLINK_XFRM] = "xfrm",
|
|
[NETLINK_SELINUX] = "selinux",
|
|
[NETLINK_ISCSI] = "iscsi",
|
|
[NETLINK_AUDIT] = "audit",
|
|
[NETLINK_FIB_LOOKUP] = "fiblookup",
|
|
[NETLINK_CONNECTOR] = "connector",
|
|
[NETLINK_NETFILTER] = "nft",
|
|
[NETLINK_IP6_FW] = "ip6fw",
|
|
[NETLINK_DNRTMSG] = "dec-rt",
|
|
[NETLINK_KOBJECT_UEVENT] = "uevent",
|
|
[NETLINK_GENERIC] = "genl",
|
|
[NETLINK_SCSITRANSPORT] = "scsi-trans",
|
|
[NETLINK_ECRYPTFS] = "ecryptfs",
|
|
[NETLINK_RDMA] = "rdma",
|
|
[NETLINK_CRYPTO] = "crypto",
|
|
};
|
|
|
|
static int nl_proto_init;
|
|
|
|
static void nl_proto_initialize(void)
|
|
{
|
|
nl_proto_init = 1;
|
|
rtnl_tab_initialize(CONFDIR "/nl_protos",
|
|
nl_proto_tab, 256);
|
|
}
|
|
|
|
const char *nl_proto_n2a(int id, char *buf, int len)
|
|
{
|
|
if (id < 0 || id >= 256) {
|
|
snprintf(buf, len, "%u", id);
|
|
return buf;
|
|
}
|
|
|
|
if (!nl_proto_init)
|
|
nl_proto_initialize();
|
|
|
|
if (nl_proto_tab[id])
|
|
return nl_proto_tab[id];
|
|
|
|
snprintf(buf, len, "%u", id);
|
|
return buf;
|
|
}
|
|
|
|
int nl_proto_a2n(__u32 *id, const char *arg)
|
|
{
|
|
static char *cache;
|
|
static unsigned long res;
|
|
char *end;
|
|
int i;
|
|
|
|
if (cache && strcmp(cache, arg) == 0) {
|
|
*id = res;
|
|
return 0;
|
|
}
|
|
|
|
if (!nl_proto_init)
|
|
nl_proto_initialize();
|
|
|
|
for (i = 0; i < 256; i++) {
|
|
if (nl_proto_tab[i] &&
|
|
strcmp(nl_proto_tab[i], arg) == 0) {
|
|
cache = nl_proto_tab[i];
|
|
res = i;
|
|
*id = res;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
res = strtoul(arg, &end, 0);
|
|
if (!end || end == arg || *end || res > 255)
|
|
return -1;
|
|
*id = res;
|
|
return 0;
|
|
}
|