X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=include%2Fbancache.h;h=c9c469e4f8fa4a81bdac25dea41679b5ef7e210a;hb=b6a5e2bd143cdd2fc610f79c87729d2e211da7ff;hp=6679a2c55b691e76bb62f813d2b96eb08ba65abe;hpb=841dc636d191bafd714fc72e5e517bf4d64d64b6;p=user%2Fhenk%2Fcode%2Finspircd.git

diff --git a/include/bancache.h b/include/bancache.h
index 6679a2c55..c9c469e4f 100644
--- a/include/bancache.h
+++ b/include/bancache.h
@@ -2,8 +2,8 @@
  *       | Inspire Internet Relay Chat Daemon |
  *       +------------------------------------+
  *
- *  InspIRCd: (C) 2002-2007 InspIRCd Development Team
- * See: http://www.inspircd.org/wiki/index.php/Credits
+ *  InspIRCd: (C) 2002-2009 InspIRCd Development Team
+ * See: http://wiki.inspircd.org/Credits
  *
  * This program is free but copyrighted software; see
  *	    the file COPYING for details.
@@ -14,4 +14,92 @@
 #ifndef __BANCACHE_H
 #define __BANCACHE_H
 
+/** Stores a cached ban entry.
+ * Each ban has one of these hashed in a hash_map to make for faster removal
+ * of already-banned users in the case that they try to reconnect. As no wildcard
+ * matching is done on these IPs, the speed of the system is improved. These cache
+ * entries expire every few hours, which is a reasonable expiry for any reasonable
+ * sized network.
+ */
+class CoreExport BanCacheHit : public classbase
+{
+ public:
+	/** Type of cached ban
+	 */
+	std::string Type;
+	/** Reason, shown as quit message
+	 */
+	std::string Reason;
+	/** IP to match against, no wildcards here (of course)
+	 */
+	std::string IP;
+	/** Time that the ban expires at
+	 */
+	time_t Expiry;
+
+	BanCacheHit(const std::string &ip, const std::string &type, const std::string &reason)
+	{
+		this->Type = type;
+		this->Reason = reason;
+		this->IP = ip;
+		this->Expiry = ServerInstance->Time() + 86400; // a day. this might seem long, but entries will be removed as glines/etc expire.
+	}
+
+	// overridden to allow custom time
+	BanCacheHit(const std::string &ip, const std::string &type, const std::string &reason, time_t seconds)
+	{
+		this->Type = type;
+		this->Reason = reason;
+		this->IP = ip;
+		this->Expiry = ServerInstance->Time() + seconds;
+	}
+};
+
+/* A container of ban cache items.
+ * must be defined after class BanCacheHit.
+ */
+#if defined(WINDOWS) && !defined(HASHMAP_DEPRECATED)
+typedef nspace::hash_map<std::string, BanCacheHit*, nspace::hash_compare<std::string, std::less<std::string> > > BanCacheHash;
+#else
+typedef nspace::hash_map<std::string, BanCacheHit*, nspace::hash<std::string> > BanCacheHash;
+#endif
+
+/** A manager for ban cache, which allocates and deallocates and checks cached bans.
+ */
+class CoreExport BanCacheManager : public classbase
+{
+ private:
+	BanCacheHash* BanHash;
+ public:
+
+	/** Creates and adds a Ban Cache item.
+	 * @param ip The IP the item is for.
+	 * @param type The type of ban cache item. std::string. .empty() means it's a negative match (user is allowed freely).
+	 * @param reason The reason for the ban. Left .empty() if it's a negative match.
+	 */
+	BanCacheHit *AddHit(const std::string &ip, const std::string &type, const std::string &reason);
+
+	// Overridden to allow an optional number of seconds before expiry
+	BanCacheHit *AddHit(const std::string &ip, const std::string &type, const std::string &reason, time_t seconds);
+	BanCacheHit *GetHit(const std::string &ip);
+	bool RemoveHit(BanCacheHit *b);
+
+	/** Removes all entries of a given type, either positive or negative. Returns the number of hits removed.
+	 * @param type The type of bancache entries to remove (e.g. 'G')
+	 * @param positive Remove either positive (true) or negative (false) hits.
+	 */
+	unsigned int RemoveEntries(const std::string &type, bool positive);
+
+	BanCacheManager()
+	{
+		this->BanHash = new BanCacheHash();
+	}
+	~BanCacheManager()
+	{
+		delete BanHash;
+	}
+
+	void RehashCache();
+};
+
 #endif