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/*-
* Copyright 2016 Vsevolod Stakhov
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "config.h"
#include "radix.h"
#include "rspamd.h"
#include "mem_pool.h"
#include "btrie.h"
#define msg_err_radix(...) rspamd_default_log_function (G_LOG_LEVEL_CRITICAL, \
"radix", tree->pool->tag.uid, \
G_STRFUNC, \
__VA_ARGS__)
#define msg_warn_radix(...) rspamd_default_log_function (G_LOG_LEVEL_WARNING, \
"radix", tree->pool->tag.uid, \
G_STRFUNC, \
__VA_ARGS__)
#define msg_info_radix(...) rspamd_default_log_function (G_LOG_LEVEL_INFO, \
"radix", tree->pool->tag.uid, \
G_STRFUNC, \
__VA_ARGS__)
#define msg_debug_radix(...) rspamd_default_log_function (G_LOG_LEVEL_DEBUG, \
"radix", tree->pool->tag.uid, \
G_STRFUNC, \
__VA_ARGS__)
struct radix_tree_compressed {
rspamd_mempool_t *pool;
size_t size;
struct btrie *tree;
};
uintptr_t
radix_find_compressed (radix_compressed_t * tree, const guint8 *key, gsize keylen)
{
gconstpointer ret;
g_assert (tree != NULL);
ret = btrie_lookup (tree->tree, key, keylen * NBBY);
if (ret == NULL) {
return RADIX_NO_VALUE;
}
return (uintptr_t)ret;
}
uintptr_t
radix_insert_compressed (radix_compressed_t * tree,
guint8 *key, gsize keylen,
gsize masklen,
uintptr_t value)
{
guint keybits = keylen * NBBY;
uintptr_t old;
int ret;
g_assert (tree != NULL);
g_assert (keybits >= masklen);
msg_debug_radix ("want insert value %p with mask %z, key: %*xs",
(gpointer)value, keybits - masklen, (int)keylen, key);
old = radix_find_compressed (tree, key, keylen);
ret = btrie_add_prefix (tree->tree, key, keybits - masklen,
(gconstpointer)value);
if (ret != BTRIE_OKAY) {
msg_err_radix ("cannot insert %p with mask %z, key: %*xs, duplicate value",
(gpointer)value, keybits - masklen, (int)keylen, key);
}
else {
tree->size ++;
}
return old;
}
radix_compressed_t *
radix_create_compressed (void)
{
radix_compressed_t *tree;
tree = g_slice_alloc (sizeof (*tree));
if (tree == NULL) {
return NULL;
}
tree->pool = rspamd_mempool_new (rspamd_mempool_suggest_size (), NULL);
tree->size = 0;
tree->tree = btrie_init (tree->pool);
return tree;
}
void
radix_destroy_compressed (radix_compressed_t *tree)
{
if (tree) {
rspamd_mempool_delete (tree->pool);
g_slice_free1 (sizeof (*tree), tree);
}
}
uintptr_t
radix_find_compressed_addr (radix_compressed_t *tree,
const rspamd_inet_addr_t *addr)
{
const guchar *key;
guint klen = 0;
if (addr == NULL) {
return RADIX_NO_VALUE;
}
key = rspamd_inet_address_get_radix_key (addr, &klen);
if (key && klen) {
return radix_find_compressed (tree, key, klen);
}
return RADIX_NO_VALUE;
}
gint
rspamd_radix_add_iplist (const gchar *list, const gchar *separators,
radix_compressed_t *tree, gconstpointer value)
{
gchar *token, *ipnet, *err_str, **strv, **cur;
struct in_addr ina;
struct in6_addr ina6;
guint k = G_MAXINT;
gint af;
gint res = 0;
/* Split string if there are multiple items inside a single string */
strv = g_strsplit_set (list, separators, 0);
cur = strv;
while (*cur) {
af = AF_UNSPEC;
if (**cur == '\0') {
cur++;
continue;
}
/* Extract ipnet */
ipnet = *cur;
token = strsep (&ipnet, "/");
if (ipnet != NULL) {
errno = 0;
/* Get mask */
k = strtoul (ipnet, &err_str, 10);
if (errno != 0) {
msg_warn_radix (
"invalid netmask, error detected on symbol: %s, erorr: %s",
err_str,
strerror (errno));
k = G_MAXINT;
}
}
/* Check IP */
if (inet_pton (AF_INET, token, &ina) == 1) {
af = AF_INET;
}
else if (inet_pton (AF_INET6, token, &ina6) == 1) {
af = AF_INET6;
}
else {
msg_warn_radix ("invalid IP address: %s", token);
cur ++;
continue;
}
if (af == AF_INET) {
if (k > 32) {
k = 32;
}
radix_insert_compressed (tree, (guint8 *)&ina, sizeof (ina),
32 - k, (uintptr_t)value);
res ++;
}
else if (af == AF_INET6){
if (k > 128) {
k = 128;
}
radix_insert_compressed (tree, (guint8 *)&ina6, sizeof (ina6),
128 - k, (uintptr_t)value);
res ++;
}
cur++;
}
g_strfreev (strv);
return res;
}
gboolean
radix_add_generic_iplist (const gchar *ip_list, radix_compressed_t **tree)
{
if (*tree == NULL) {
*tree = radix_create_compressed ();
}
return (rspamd_radix_add_iplist (ip_list, ",; ", *tree,
GINT_TO_POINTER (1)) > 0);
}
gsize
radix_get_size (radix_compressed_t *tree)
{
if (tree != NULL) {
return tree->size;
}
return 0;
}
rspamd_mempool_t *
radix_get_pool (radix_compressed_t *tree)
{
if (tree != NULL) {
return tree->pool;
}
return NULL;
}
const gchar *
radix_get_info (radix_compressed_t *tree)
{
if (tree == NULL) {
return NULL;
}
return btrie_stats (tree->tree);
}
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