134 lines
4.4 KiB
C++
134 lines
4.4 KiB
C++
/***************************************************************************
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*
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* Copyright (C) 2001 Microsoft Corporation. All Rights Reserved.
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*
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* File: dpnhpastcachemap.h
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*
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* Content: Header for cached mapping object class.
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*
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* History:
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* Date By Reason
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* ======== ======== =========
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* 04/16/01 VanceO Split DPNATHLP into DPNHUPNP and DPNHPAST.
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*
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***************************************************************************/
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//=============================================================================
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// Object flags
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//=============================================================================
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#define CACHEMAPOBJ_TCP DPNHQUERYADDRESS_TCP // a TCP port instead of UDP
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#define CACHEMAPOBJ_NOTFOUND DPNHQUERYADDRESS_CACHENOTFOUND // the address was actually not found
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#define CACHEMAPOBJ_PRIVATEBUTUNMAPPED DPNHQUERYADDRESS_CHECKFORPRIVATEBUTUNMAPPED // the address is private, but was not mapped on the Internet gateway
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//=============================================================================
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// Macros
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//=============================================================================
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#define CACHEMAP_FROM_BILINK(b) (CONTAINING_OBJECT(b, CCacheMap, m_blList))
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//
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// TCP queries need to match TCP mappings, (and UDP needs to match UDP).
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//
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#define QUERYFLAGSMASK(dwFlags) (dwFlags & DPNHQUERYADDRESS_TCP)
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//=============================================================================
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// Forward declarations
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//=============================================================================
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class CCacheMap;
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//=============================================================================
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// Main interface object class
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//=============================================================================
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class CCacheMap
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{
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public:
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#undef DPF_MODNAME
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#define DPF_MODNAME "CCacheMap::CCacheMap"
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CCacheMap(const SOCKADDR_IN * const psaddrinQueryAddress,
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const DWORD dwExpirationTime,
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const DWORD dwFlags)
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{
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this->m_blList.Initialize();
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this->m_Sig[0] = 'C';
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this->m_Sig[1] = 'M';
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this->m_Sig[2] = 'A';
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this->m_Sig[3] = 'P';
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this->m_dwQueryAddressV4 = psaddrinQueryAddress->sin_addr.S_un.S_addr;
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this->m_wQueryPort = psaddrinQueryAddress->sin_port;
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this->m_dwFlags = dwFlags; // works because CACHEMAPOBJ_xxx == DPNHQUERYADDRESS_xxx.
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this->m_dwExpirationTime = dwExpirationTime;
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};
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#undef DPF_MODNAME
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#define DPF_MODNAME "CCacheMap::~CCacheMap"
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~CCacheMap(void)
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{
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DNASSERT(this->m_blList.IsEmpty());
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};
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inline BOOL DoesMatchQuery(const SOCKADDR_IN * const psaddrinQueryAddress,
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const DWORD dwFlags) const
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{
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//
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// Is this even the right address?
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//
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if ((this->m_dwQueryAddressV4 != psaddrinQueryAddress->sin_addr.S_un.S_addr) ||
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(this->m_wQueryPort != psaddrinQueryAddress->sin_port))
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{
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return FALSE;
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}
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//
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// Of the ones that matter (QUERYFLAGSMASK), make sure all
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// required flags are present, and all flags that aren't
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// required are not present.
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// Remember CACHEMAPOBJ_xxx == DPNHQUERYADDRESS_xxx.
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//
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return ((QUERYFLAGSMASK(this->m_dwFlags) == QUERYFLAGSMASK(dwFlags)) ? TRUE : FALSE);
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};
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inline BOOL IsNotFound(void) const { return ((this->m_dwFlags & CACHEMAPOBJ_NOTFOUND) ? TRUE : FALSE); };
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inline BOOL IsPrivateButUnmapped(void) const { return ((this->m_dwFlags & CACHEMAPOBJ_PRIVATEBUTUNMAPPED) ? TRUE : FALSE); };
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inline void GetResponseAddressV4(SOCKADDR_IN * const psaddrinAddress) const
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{
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ZeroMemory(psaddrinAddress, sizeof(*psaddrinAddress));
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psaddrinAddress->sin_family = AF_INET;
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psaddrinAddress->sin_addr.S_un.S_addr = this->m_dwResponseAddressV4;
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psaddrinAddress->sin_port = this->m_wResponsePort;
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};
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inline DWORD GetExpirationTime(void) const { return this->m_dwExpirationTime; };
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inline void SetResponseAddressV4(const DWORD dwAddressV4,
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const WORD wPort)
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{
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this->m_dwResponseAddressV4 = dwAddressV4;
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this->m_wResponsePort = wPort;
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};
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CBilink m_blList; // list of all the mappings cached
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private:
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BYTE m_Sig[4]; // debugging signature ('CMAP')
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DWORD m_dwFlags; // flags for this object
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DWORD m_dwQueryAddressV4; // IPv4 address searched
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WORD m_wQueryPort; // IPv4 port searched
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DWORD m_dwResponseAddressV4; // IPv4 address mapping corresponding to query
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WORD m_wResponsePort; // IPv4 port mapping corresponding to query
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DWORD m_dwExpirationTime; // time when this cached mapping expires
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};
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