56 lines
1.2 KiB
C
56 lines
1.2 KiB
C
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//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose: rate limits OOB server queries
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//
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//=============================================================================//
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#ifndef SVIPRATELIMIT_H
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#define SVIPRATELIMIT_H
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#ifdef _WIN32
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#pragma once
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#endif
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#include "netadr.h"
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#include "sv_ipratelimit.h"
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#include "convar.h"
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#include "utlrbtree.h"
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class CIPRateLimit
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{
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public:
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CIPRateLimit(ConVar *maxSec, ConVar *maxWindow, ConVar *maxSecGlobal);
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~CIPRateLimit();
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// updates an ip entry, return true if the ip is allowed, false otherwise
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bool CheckIP( netadr_t ip );
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private:
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bool CheckIPInternal( netadr_t ip );
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enum { MAX_TREE_SIZE = 32768, START_TREE_SIZE = 2048, FLUSH_TIMEOUT = 120 };
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typedef int ip_t;
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struct iprate_s
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{
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ip_t ip;
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long lastTime;
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int count;
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};
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static bool LessIP( const struct CIPRateLimit::iprate_s &lhs, const struct CIPRateLimit::iprate_s &rhs );
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CUtlRBTree< struct iprate_s, ip_t > m_IPTree;
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int m_iGlobalCount;
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long m_lLastTime;
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double m_flFlushTime;
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ConVar *m_maxSec;
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ConVar *m_maxWindow;
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ConVar *m_maxSecGlobal;
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};
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// returns false if this IP exceeds rate limits
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bool CheckConnectionLessRateLimits( netadr_t & adr );
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#endif // SVIPRATELIMIT_H
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