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-rw-r--r--lib/rt_names.c788
1 files changed, 788 insertions, 0 deletions
diff --git a/lib/rt_names.c b/lib/rt_names.c
new file mode 100644
index 0000000..b976471
--- /dev/null
+++ b/lib/rt_names.c
@@ -0,0 +1,788 @@
+/*
+ * 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 <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <string.h>
+#include <sys/time.h>
+#include <sys/socket.h>
+#include <dirent.h>
+#include <limits.h>
+
+#include <asm/types.h>
+#include <linux/rtnetlink.h>
+
+#include "rt_names.h"
+#include "utils.h"
+
+#define NAME_MAX_LEN 512
+
+int numeric;
+
+struct rtnl_hash_entry {
+ struct rtnl_hash_entry *next;
+ const char *name;
+ unsigned int id;
+};
+
+static int fread_id_name(FILE *fp, int *id, char *namebuf)
+{
+ char buf[NAME_MAX_LEN];
+
+ while (fgets(buf, sizeof(buf), fp)) {
+ char *p = buf;
+
+ 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) {
+ strcpy(namebuf, p);
+ return -1;
+ }
+ return 1;
+ }
+ return 0;
+}
+
+static void
+rtnl_hash_initialize(const char *file, struct rtnl_hash_entry **hash, int size)
+{
+ struct rtnl_hash_entry *entry;
+ FILE *fp;
+ int id;
+ char namebuf[NAME_MAX_LEN] = {0};
+ int ret;
+
+ fp = fopen(file, "r");
+ if (!fp)
+ return;
+
+ while ((ret = fread_id_name(fp, &id, &namebuf[0]))) {
+ if (ret == -1) {
+ fprintf(stderr, "Database %s is corrupted at %s\n",
+ file, namebuf);
+ fclose(fp);
+ return;
+ }
+
+ if (id < 0)
+ continue;
+
+ entry = malloc(sizeof(*entry));
+ entry->id = id;
+ entry->name = strdup(namebuf);
+ entry->next = hash[id & (size - 1)];
+ hash[id & (size - 1)] = entry;
+ }
+ fclose(fp);
+}
+
+static void rtnl_tab_initialize(const char *file, char **tab, int size)
+{
+ FILE *fp;
+ int id;
+ char namebuf[NAME_MAX_LEN] = {0};
+ int ret;
+
+ fp = fopen(file, "r");
+ if (!fp)
+ return;
+
+ while ((ret = fread_id_name(fp, &id, &namebuf[0]))) {
+ if (ret == -1) {
+ fprintf(stderr, "Database %s is corrupted at %s\n",
+ file, namebuf);
+ fclose(fp);
+ return;
+ }
+ if (id < 0 || id > size)
+ continue;
+
+ tab[id] = strdup(namebuf);
+ }
+ fclose(fp);
+}
+
+static char *rtnl_rtprot_tab[256] = {
+ [RTPROT_UNSPEC] = "unspec",
+ [RTPROT_REDIRECT] = "redirect",
+ [RTPROT_KERNEL] = "kernel",
+ [RTPROT_BOOT] = "boot",
+ [RTPROT_STATIC] = "static",
+
+ [RTPROT_GATED] = "gated",
+ [RTPROT_RA] = "ra",
+ [RTPROT_MRT] = "mrt",
+ [RTPROT_ZEBRA] = "zebra",
+ [RTPROT_BIRD] = "bird",
+ [RTPROT_BABEL] = "babel",
+ [RTPROT_DNROUTED] = "dnrouted",
+ [RTPROT_XORP] = "xorp",
+ [RTPROT_NTK] = "ntk",
+ [RTPROT_DHCP] = "dhcp",
+ [RTPROT_KEEPALIVED] = "keepalived",
+ [RTPROT_BGP] = "bgp",
+ [RTPROT_ISIS] = "isis",
+ [RTPROT_OSPF] = "ospf",
+ [RTPROT_RIP] = "rip",
+ [RTPROT_EIGRP] = "eigrp",
+};
+
+
+static int rtnl_rtprot_init;
+
+static void rtnl_rtprot_initialize(void)
+{
+ struct dirent *de;
+ DIR *d;
+
+ rtnl_rtprot_init = 1;
+ rtnl_tab_initialize(CONFDIR "/rt_protos",
+ rtnl_rtprot_tab, 256);
+
+ d = opendir(CONFDIR "/rt_protos.d");
+ if (!d)
+ return;
+
+ while ((de = readdir(d)) != NULL) {
+ char path[PATH_MAX];
+ size_t len;
+
+ if (*de->d_name == '.')
+ continue;
+
+ /* only consider filenames ending in '.conf' */
+ len = strlen(de->d_name);
+ if (len <= 5)
+ continue;
+ if (strcmp(de->d_name + len - 5, ".conf"))
+ continue;
+
+ snprintf(path, sizeof(path), CONFDIR "/rt_protos.d/%s",
+ de->d_name);
+ rtnl_tab_initialize(path, rtnl_rtprot_tab, 256);
+ }
+ closedir(d);
+}
+
+const char *rtnl_rtprot_n2a(int id, char *buf, int len)
+{
+ if (id < 0 || id >= 256 || numeric) {
+ snprintf(buf, len, "%u", id);
+ return buf;
+ }
+ if (!rtnl_rtprot_tab[id]) {
+ if (!rtnl_rtprot_init)
+ rtnl_rtprot_initialize();
+ }
+ if (rtnl_rtprot_tab[id])
+ return rtnl_rtprot_tab[id];
+ snprintf(buf, len, "%u", id);
+ return buf;
+}
+
+int rtnl_rtprot_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 (!rtnl_rtprot_init)
+ 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 = strtoul(arg, &end, 0);
+ if (!end || end == arg || *end || res > 255)
+ return -1;
+ *id = res;
+ return 0;
+}
+
+
+static char *rtnl_rtscope_tab[256] = {
+ [RT_SCOPE_UNIVERSE] = "global",
+ [RT_SCOPE_NOWHERE] = "nowhere",
+ [RT_SCOPE_HOST] = "host",
+ [RT_SCOPE_LINK] = "link",
+ [RT_SCOPE_SITE] = "site",
+};
+
+static int rtnl_rtscope_init;
+
+static void rtnl_rtscope_initialize(void)
+{
+ rtnl_rtscope_init = 1;
+ rtnl_tab_initialize(CONFDIR "/rt_scopes",
+ rtnl_rtscope_tab, 256);
+}
+
+const char *rtnl_rtscope_n2a(int id, char *buf, int len)
+{
+ if (id < 0 || id >= 256 || numeric) {
+ snprintf(buf, len, "%d", id);
+ return buf;
+ }
+
+ if (!rtnl_rtscope_tab[id]) {
+ if (!rtnl_rtscope_init)
+ rtnl_rtscope_initialize();
+ }
+
+ if (rtnl_rtscope_tab[id])
+ return rtnl_rtscope_tab[id];
+
+ snprintf(buf, len, "%d", id);
+ return buf;
+}
+
+int rtnl_rtscope_a2n(__u32 *id, const char *arg)
+{
+ static const char *cache;
+ static unsigned long res;
+ char *end;
+ int i;
+
+ if (cache && strcmp(cache, arg) == 0) {
+ *id = res;
+ return 0;
+ }
+
+ if (!rtnl_rtscope_init)
+ 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 = strtoul(arg, &end, 0);
+ if (!end || end == arg || *end || res > 255)
+ return -1;
+ *id = res;
+ return 0;
+}
+
+
+static char *rtnl_rtrealm_tab[256] = {
+ "unknown",
+};
+
+static int rtnl_rtrealm_init;
+
+static void rtnl_rtrealm_initialize(void)
+{
+ rtnl_rtrealm_init = 1;
+ rtnl_tab_initialize(CONFDIR "/rt_realms",
+ rtnl_rtrealm_tab, 256);
+}
+
+const char *rtnl_rtrealm_n2a(int id, char *buf, int len)
+{
+ if (id < 0 || id >= 256 || numeric) {
+ snprintf(buf, len, "%d", id);
+ return buf;
+ }
+ if (!rtnl_rtrealm_tab[id]) {
+ if (!rtnl_rtrealm_init)
+ rtnl_rtrealm_initialize();
+ }
+ if (rtnl_rtrealm_tab[id])
+ return rtnl_rtrealm_tab[id];
+ snprintf(buf, len, "%d", id);
+ return buf;
+}
+
+
+int rtnl_rtrealm_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 (!rtnl_rtrealm_init)
+ 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 = strtoul(arg, &end, 0);
+ if (!end || end == arg || *end || res > 255)
+ return -1;
+ *id = res;
+ return 0;
+}
+
+
+static struct rtnl_hash_entry dflt_table_entry = { .name = "default" };
+static struct rtnl_hash_entry main_table_entry = { .name = "main" };
+static struct rtnl_hash_entry local_table_entry = { .name = "local" };
+
+static struct rtnl_hash_entry *rtnl_rttable_hash[256] = {
+ [RT_TABLE_DEFAULT] = &dflt_table_entry,
+ [RT_TABLE_MAIN] = &main_table_entry,
+ [RT_TABLE_LOCAL] = &local_table_entry,
+};
+
+static int rtnl_rttable_init;
+
+static void rtnl_rttable_initialize(void)
+{
+ struct dirent *de;
+ DIR *d;
+ int i;
+
+ rtnl_rttable_init = 1;
+ for (i = 0; i < 256; i++) {
+ if (rtnl_rttable_hash[i])
+ rtnl_rttable_hash[i]->id = i;
+ }
+ rtnl_hash_initialize(CONFDIR "/rt_tables",
+ rtnl_rttable_hash, 256);
+
+ d = opendir(CONFDIR "/rt_tables.d");
+ if (!d)
+ return;
+
+ while ((de = readdir(d)) != NULL) {
+ char path[PATH_MAX];
+ size_t len;
+
+ if (*de->d_name == '.')
+ continue;
+
+ /* only consider filenames ending in '.conf' */
+ len = strlen(de->d_name);
+ if (len <= 5)
+ continue;
+ if (strcmp(de->d_name + len - 5, ".conf"))
+ continue;
+
+ snprintf(path, sizeof(path),
+ CONFDIR "/rt_tables.d/%s", de->d_name);
+ rtnl_hash_initialize(path, rtnl_rttable_hash, 256);
+ }
+ closedir(d);
+}
+
+const char *rtnl_rttable_n2a(__u32 id, char *buf, int len)
+{
+ struct rtnl_hash_entry *entry;
+
+ if (!rtnl_rttable_init)
+ rtnl_rttable_initialize();
+ entry = rtnl_rttable_hash[id & 255];
+ while (entry && entry->id != id)
+ entry = entry->next;
+ if (!numeric && entry)
+ return entry->name;
+ snprintf(buf, len, "%u", id);
+ return buf;
+}
+
+int rtnl_rttable_a2n(__u32 *id, const char *arg)
+{
+ static const char *cache;
+ static unsigned long res;
+ struct rtnl_hash_entry *entry;
+ char *end;
+ unsigned long i;
+
+ if (cache && strcmp(cache, arg) == 0) {
+ *id = res;
+ return 0;
+ }
+
+ if (!rtnl_rttable_init)
+ rtnl_rttable_initialize();
+
+ for (i = 0; i < 256; i++) {
+ entry = rtnl_rttable_hash[i];
+ while (entry && strcmp(entry->name, arg))
+ entry = entry->next;
+ if (entry) {
+ cache = entry->name;
+ res = entry->id;
+ *id = res;
+ return 0;
+ }
+ }
+
+ i = strtoul(arg, &end, 0);
+ if (!end || end == arg || *end || i > RT_TABLE_MAX)
+ return -1;
+ *id = i;
+ return 0;
+}
+
+
+static char *rtnl_rtdsfield_tab[256] = {
+ "0",
+};
+
+static int rtnl_rtdsfield_init;
+
+static void rtnl_rtdsfield_initialize(void)
+{
+ rtnl_rtdsfield_init = 1;
+ rtnl_tab_initialize(CONFDIR "/rt_dsfield",
+ rtnl_rtdsfield_tab, 256);
+}
+
+const char *rtnl_dsfield_n2a(int id, char *buf, int len)
+{
+ const char *name;
+
+ if (id < 0 || id >= 256) {
+ snprintf(buf, len, "%d", id);
+ return buf;
+ }
+ if (!numeric) {
+ name = rtnl_dsfield_get_name(id);
+ if (name != NULL)
+ return name;
+ }
+ snprintf(buf, len, "0x%02x", id);
+ return buf;
+}
+
+const char *rtnl_dsfield_get_name(int id)
+{
+ if (id < 0 || id >= 256)
+ return NULL;
+ if (!rtnl_rtdsfield_tab[id]) {
+ if (!rtnl_rtdsfield_init)
+ rtnl_rtdsfield_initialize();
+ }
+ return rtnl_rtdsfield_tab[id];
+}
+
+
+int rtnl_dsfield_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 (!rtnl_rtdsfield_init)
+ 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 = strtoul(arg, &end, 16);
+ if (!end || end == arg || *end || res > 255)
+ return -1;
+ *id = res;
+ return 0;
+}
+
+
+static struct rtnl_hash_entry dflt_group_entry = {
+ .id = 0, .name = "default"
+};
+
+static struct rtnl_hash_entry *rtnl_group_hash[256] = {
+ [0] = &dflt_group_entry,
+};
+
+static int rtnl_group_init;
+
+static void rtnl_group_initialize(void)
+{
+ rtnl_group_init = 1;
+ rtnl_hash_initialize(CONFDIR "/group",
+ rtnl_group_hash, 256);
+}
+
+int rtnl_group_a2n(int *id, const char *arg)
+{
+ static const char *cache;
+ static unsigned long res;
+ struct rtnl_hash_entry *entry;
+ char *end;
+ int i;
+
+ if (cache && strcmp(cache, arg) == 0) {
+ *id = res;
+ return 0;
+ }
+
+ if (!rtnl_group_init)
+ rtnl_group_initialize();
+
+ for (i = 0; i < 256; i++) {
+ entry = rtnl_group_hash[i];
+ while (entry && strcmp(entry->name, arg))
+ entry = entry->next;
+ 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; !numeric && 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 || numeric) {
+ snprintf(buf, len, "%d", 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;
+}
+
+#define PROTODOWN_REASON_NUM_BITS 32
+static char *protodown_reason_tab[PROTODOWN_REASON_NUM_BITS] = {
+};
+
+static int protodown_reason_init;
+
+static void protodown_reason_initialize(void)
+{
+ struct dirent *de;
+ DIR *d;
+
+ protodown_reason_init = 1;
+
+ d = opendir(CONFDIR "/protodown_reasons.d");
+ if (!d)
+ return;
+
+ while ((de = readdir(d)) != NULL) {
+ char path[PATH_MAX];
+ size_t len;
+
+ if (*de->d_name == '.')
+ continue;
+
+ /* only consider filenames ending in '.conf' */
+ len = strlen(de->d_name);
+ if (len <= 5)
+ continue;
+ if (strcmp(de->d_name + len - 5, ".conf"))
+ continue;
+
+ snprintf(path, sizeof(path), CONFDIR "/protodown_reasons.d/%s",
+ de->d_name);
+ rtnl_tab_initialize(path, protodown_reason_tab,
+ PROTODOWN_REASON_NUM_BITS);
+ }
+ closedir(d);
+}
+
+int protodown_reason_n2a(int id, char *buf, int len)
+{
+ if (id < 0 || id >= PROTODOWN_REASON_NUM_BITS)
+ return -1;
+
+ if (numeric) {
+ snprintf(buf, len, "%d", id);
+ return 0;
+ }
+
+ if (!protodown_reason_init)
+ protodown_reason_initialize();
+
+ if (protodown_reason_tab[id])
+ snprintf(buf, len, "%s", protodown_reason_tab[id]);
+ else
+ snprintf(buf, len, "%d", id);
+
+ return 0;
+}
+
+int protodown_reason_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 (!protodown_reason_init)
+ protodown_reason_initialize();
+
+ for (i = 0; i < PROTODOWN_REASON_NUM_BITS; i++) {
+ if (protodown_reason_tab[i] &&
+ strcmp(protodown_reason_tab[i], arg) == 0) {
+ cache = protodown_reason_tab[i];
+ res = i;
+ *id = res;
+ return 0;
+ }
+ }
+
+ res = strtoul(arg, &end, 0);
+ if (!end || end == arg || *end || res >= PROTODOWN_REASON_NUM_BITS)
+ return -1;
+ *id = res;
+ return 0;
+}
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