* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*
- * $Id: reject.c 849 2006-02-15 01:33:43Z jilles $
+ * $Id: reject.c 3456 2007-05-18 19:14:18Z jilles $
*/
#include "stdinc.h"
#include "reject.h"
#include "s_stats.h"
#include "msg.h"
+#include "hash.h"
static patricia_tree_t *reject_tree;
-dlink_list delay_exit;
-static dlink_list reject_list;
+rb_dlink_list delay_exit;
+static rb_dlink_list reject_list;
+
+static patricia_tree_t *unknown_tree;
struct reject_data
{
- dlink_node rnode;
+ rb_dlink_node rnode;
time_t time;
unsigned int count;
+ uint32_t mask_hashv;
};
+static patricia_tree_t *unknown_tree;
+
static void
reject_exit(void *unused)
{
struct Client *client_p;
- dlink_node *ptr, *ptr_next;
+ rb_dlink_node *ptr, *ptr_next;
DLINK_FOREACH_SAFE(ptr, ptr_next, delay_exit.head)
{
* ircu message suggests --jilles
*/
if(!IsIOError(client_p))
- sendto_one(client_p, "ERROR :Closing Link: %s (*** Banned (cache))", client_p->host);
-
+ {
+ if(IsExUnknown(client_p))
+ sendto_one(client_p, "ERROR :Closing Link: %s (*** Too many unknown connections)", client_p->host);
+ else
+ sendto_one(client_p, "ERROR :Closing Link: %s (*** Banned (cache))", client_p->host);
+ }
close_connection(client_p);
SetDead(client_p);
- dlinkAddAlloc(client_p, &dead_list);
+ rb_dlinkAddAlloc(client_p, &dead_list);
}
delay_exit.head = delay_exit.tail = NULL;
static void
reject_expires(void *unused)
{
- dlink_node *ptr, *next;
+ rb_dlink_node *ptr, *next;
patricia_node_t *pnode;
struct reject_data *rdata;
if(rdata->time + ConfigFileEntry.reject_duration > CurrentTime)
continue;
- dlinkDelete(ptr, &reject_list);
+ rb_dlinkDelete(ptr, &reject_list);
MyFree(rdata);
patricia_remove(reject_tree, pnode);
}
init_reject(void)
{
reject_tree = New_Patricia(PATRICIA_BITS);
+ unknown_tree = New_Patricia(PATRICIA_BITS);
eventAdd("reject_exit", reject_exit, NULL, DELAYED_EXIT_TIME);
eventAdd("reject_expires", reject_expires, NULL, 60);
}
void
-add_reject(struct Client *client_p)
+add_reject(struct Client *client_p, const char *mask1, const char *mask2)
{
patricia_node_t *pnode;
struct reject_data *rdata;
+ uint32_t hashv;
/* Reject is disabled */
if(ConfigFileEntry.reject_after_count == 0 || ConfigFileEntry.reject_ban_time == 0)
return;
+ hashv = 0;
+ if (mask1 != NULL)
+ hashv ^= fnv_hash_upper(mask1, 32);
+ if (mask2 != NULL)
+ hashv ^= fnv_hash_upper(mask2, 32);
+
if((pnode = match_ip(reject_tree, (struct sockaddr *)&client_p->localClient->ip)) != NULL)
{
rdata = pnode->data;
#endif
pnode = make_and_lookup_ip(reject_tree, (struct sockaddr *)&client_p->localClient->ip, bitlen);
pnode->data = rdata = MyMalloc(sizeof(struct reject_data));
- dlinkAddTail(pnode, &rdata->rnode, &reject_list);
+ rb_dlinkAddTail(pnode, &rdata->rnode, &reject_list);
rdata->time = CurrentTime;
rdata->count = 1;
}
+ rdata->mask_hashv = hashv;
}
int
{
ServerStats->is_rej++;
SetReject(client_p);
- comm_setselect(client_p->localClient->fd, FDLIST_NONE, COMM_SELECT_WRITE | COMM_SELECT_READ, NULL, NULL, 0);
+ rb_setselect(client_p->localClient->F->fd, FDLIST_NONE, COMM_SELECT_WRITE | COMM_SELECT_READ, NULL, NULL, 0);
SetClosing(client_p);
- dlinkMoveNode(&client_p->localClient->tnode, &unknown_list, &delay_exit);
+ rb_dlinkMoveNode(&client_p->localClient->tnode, &unknown_list, &delay_exit);
return 1;
}
}
void
flush_reject(void)
{
- dlink_node *ptr, *next;
+ rb_dlink_node *ptr, *next;
patricia_node_t *pnode;
struct reject_data *rdata;
{
pnode = ptr->data;
rdata = pnode->data;
- dlinkDelete(ptr, &reject_list);
+ rb_dlinkDelete(ptr, &reject_list);
MyFree(rdata);
patricia_remove(reject_tree, pnode);
}
}
int
-remove_reject(const char *ip)
+remove_reject_ip(const char *ip)
{
patricia_node_t *pnode;
if((pnode = match_string(reject_tree, ip)) != NULL)
{
struct reject_data *rdata = pnode->data;
- dlinkDelete(&rdata->rnode, &reject_list);
+ rb_dlinkDelete(&rdata->rnode, &reject_list);
MyFree(rdata);
patricia_remove(reject_tree, pnode);
return 1;
return 0;
}
+int
+remove_reject_mask(const char *mask1, const char *mask2)
+{
+ rb_dlink_node *ptr, *next;
+ patricia_node_t *pnode;
+ struct reject_data *rdata;
+ uint32_t hashv;
+ int n = 0;
+
+ hashv = 0;
+ if (mask1 != NULL)
+ hashv ^= fnv_hash_upper(mask1, 32);
+ if (mask2 != NULL)
+ hashv ^= fnv_hash_upper(mask2, 32);
+ DLINK_FOREACH_SAFE(ptr, next, reject_list.head)
+ {
+ pnode = ptr->data;
+ rdata = pnode->data;
+ if (rdata->mask_hashv == hashv)
+ {
+ rb_dlinkDelete(ptr, &reject_list);
+ MyFree(rdata);
+ patricia_remove(reject_tree, pnode);
+ n++;
+ }
+ }
+ return n;
+}
+
+
+int
+add_unknown_ip(struct Client *client_p)
+{
+ patricia_node_t *pnode;
+
+ if((pnode = match_ip(unknown_tree, (struct sockaddr *)&client_p->localClient->ip)) == NULL)
+ {
+ int bitlen = 32;
+#ifdef IPV6
+ if(client_p->localClient->ip.ss_family == AF_INET6)
+ bitlen = 128;
+#endif
+ pnode = make_and_lookup_ip(unknown_tree, (struct sockaddr *)&client_p->localClient->ip, bitlen);
+ pnode->data = (void *)0;
+ }
+
+ if((unsigned long)pnode->data >= ConfigFileEntry.max_unknown_ip)
+ {
+ SetExUnknown(client_p);
+ SetReject(client_p);
+ rb_setselect(client_p->localClient->F->fd, FDLIST_NONE, COMM_SELECT_WRITE | COMM_SELECT_READ, NULL, NULL, 0);
+ SetClosing(client_p);
+ rb_dlinkMoveNode(&client_p->localClient->tnode, &unknown_list, &delay_exit);
+ return 1;
+ }
+
+ pnode->data = (void *)((unsigned long)pnode->data + 1);
+
+ return 0;
+}
+
+void
+del_unknown_ip(struct Client *client_p)
+{
+ patricia_node_t *pnode;
+
+ if((pnode = match_ip(unknown_tree, (struct sockaddr *)&client_p->localClient->ip)) != NULL)
+ {
+ pnode->data = (void *)((unsigned long)pnode->data - 1);
+ if((unsigned long)pnode->data <= 0)
+ {
+ patricia_remove(unknown_tree, pnode);
+ }
+ }
+ /* this can happen due to m_webirc.c's manipulations, for example */
+}
projects / irc / rqf / shadowircd.git / blobdiff