120 lines
2.8 KiB
C++
120 lines
2.8 KiB
C++
/*++
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Copyright (C) Microsoft Corporation, 2001
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Module Name:
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Cookie.cxx
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Abstract:
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HTTP2 Cookie management functions.
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Author:
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KamenM 09-18-01 Created
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Revision History:
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--*/
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#include <precomp.hxx>
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#include <Cookie.hxx>
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CookieCollection *g_pServerCookieCollection = NULL;
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CookieCollection *g_pInProxyCookieCollection = NULL;
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CookieCollection *g_pOutProxyCookieCollection = NULL;
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HTTP2VirtualConnection *CookieCollection::FindElement (
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IN HTTP2ServerCookie *Cookie
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)
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/*++
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Routine Description:
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Finds an element in the cookie collection.
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Arguments:
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Cookie - element to find. Only the Cookie part of it
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is looked at.
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Return Value:
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NULL - the element was not found.
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non-NULL - pointer to the found element
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--*/
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{
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LIST_ENTRY *CurrentListElement;
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HTTP2ServerCookie *CurrentCookie;
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ULONG *CurrentCookieNumber;
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ULONG *CookieNumberToLookFor;
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Mutex.VerifyOwned();
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CookieNumberToLookFor = (ULONG *)Cookie->GetCookie();
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CurrentListElement = ListHead.Flink;
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while (CurrentListElement != &ListHead)
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{
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CurrentCookie = CONTAINING_RECORD(CurrentListElement, HTTP2ServerCookie, ListEntry);
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CurrentCookieNumber = (ULONG *)CurrentCookie->GetCookie();
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// the cookies are cryptographically strong numbers. From a performance
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// perspective, the chances that the first comparison will succeed and
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// the others will fail are extremely slim
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if ((*(CurrentCookieNumber + 0) == *(CookieNumberToLookFor + 0))
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&& (*(CurrentCookieNumber + 1) == *(CookieNumberToLookFor + 1))
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&& (*(CurrentCookieNumber + 2) == *(CookieNumberToLookFor + 2))
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&& (*(CurrentCookieNumber + 3) == *(CookieNumberToLookFor + 3)) )
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{
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return CurrentCookie->Connection;
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}
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CurrentListElement = CurrentListElement->Flink;
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}
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return NULL;
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}
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RPC_STATUS CookieCollection::InitializeCookieCollection (
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IN OUT CookieCollection **CookieCollectionPtr
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)
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/*++
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Routine Description:
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Initializes a given cookie collection.
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N.B. This method is not thread safe. Callers
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must synchronize before calling it.
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Arguments:
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CookieCollectionPtr - on input verified to point to NULL.
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If the function succeeds, on output it will contain
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the collection. If the function fails, on output it
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is guaranteed to contain NULL.
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Return Value:
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RPC_S_OK for success or RPC_S_* for error
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--*/
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{
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RPC_STATUS RpcStatus = RPC_S_OK;
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if (*CookieCollectionPtr == NULL)
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{
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*CookieCollectionPtr = new CookieCollection(&RpcStatus);
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if (RpcStatus != RPC_S_OK)
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{
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delete *CookieCollectionPtr;
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*CookieCollectionPtr = NULL;
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}
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}
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return RpcStatus;
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}
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