145 lines
2.5 KiB
C
145 lines
2.5 KiB
C
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/*++
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Copyright (c) 1998, Microsoft Corporation
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Module Name:
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dnsquery.h
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Abstract:
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This module contains declarations for the DNS proxy's query-management.
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Author:
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Abolade Gbadegesin (aboladeg) 11-Mar-1998
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Revision History:
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Raghu Gatta (rgatta) 1-Dec-2000
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Added ICSDomain registry key change notify functions.
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--*/
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#ifndef _NATHLP_DNSQUERY_H_
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#define _NATHLP_DNSQUERY_H_
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//
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// CONSTANT DECLARATIONS
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//
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#define DNS_QUERY_TIMEOUT (4 * 1000)
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#define DNS_QUERY_RETRY 3
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//
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// STRUCTURE DECLARATIONS
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//
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//
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// Structure: DNS_QUERY
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//
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// This structure holds information about a single pending DNS query.
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// Each such entry is on an interface's list of pending queries,
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// sorted on the 'QueryId' field.
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// Access to the list is synchronized using the interface's lock.
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//
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typedef struct _DNS_QUERY {
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LIST_ENTRY Link;
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USHORT QueryId;
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USHORT SourceId;
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ULONG SourceAddress;
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USHORT SourcePort;
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DNS_PROXY_TYPE Type;
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ULONG QueryLength;
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PNH_BUFFER Bufferp;
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PDNS_INTERFACE Interfacep;
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HANDLE TimerHandle;
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ULONG RetryCount;
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} DNS_QUERY, *PDNS_QUERY;
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//
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// GLOBAL VARIABLE DECLARATIONS
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//
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extern HANDLE DnsNotifyChangeKeyEvent;
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extern HANDLE DnsNotifyChangeKeyWaitHandle;
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extern PULONG DnsServerList[DnsProxyCount];
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extern HANDLE DnsTcpipInterfacesKey;
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extern HANDLE DnsNotifyChangeAddressEvent;
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extern HANDLE DnsNotifyChangeAddressWaitHandle;
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extern HANDLE DnsNotifyChangeKeyICSDomainEvent;
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extern HANDLE DnsNotifyChangeKeyICSDomainWaitHandle;
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extern HANDLE DnsTcpipParametersKey;
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extern PWCHAR DnsICSDomainSuffix;
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//
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// ROUTINE DECLARATIONS
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//
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VOID
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DnsDeleteQuery(
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PDNS_INTERFACE Interfacep,
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PDNS_QUERY Queryp
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);
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BOOLEAN
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DnsIsPendingQuery(
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PDNS_INTERFACE Interfacep,
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PNH_BUFFER QueryBuffer
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);
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PDNS_QUERY
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DnsMapResponseToQuery(
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PDNS_INTERFACE Interfacep,
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USHORT ResponseId
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);
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VOID NTAPI
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DnsNotifyChangeAddressCallbackRoutine(
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PVOID Context,
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BOOLEAN TimedOut
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);
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VOID NTAPI
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DnsNotifyChangeKeyCallbackRoutine(
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PVOID Context,
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BOOLEAN TimedOut
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);
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VOID NTAPI
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DnsNotifyChangeKeyICSDomainCallbackRoutine(
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PVOID Context,
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BOOLEAN TimedOut
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);
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ULONG
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DnsQueryServerList(
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VOID
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);
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ULONG
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DnsQueryICSDomainSuffix(
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VOID
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);
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PDNS_QUERY
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DnsRecordQuery(
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PDNS_INTERFACE Interfacep,
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PNH_BUFFER QueryBuffer
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);
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ULONG
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DnsSendQuery(
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PDNS_INTERFACE Interfacep,
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PDNS_QUERY Queryp,
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BOOLEAN Resend
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);
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#endif // _NATHLP_DNSQUERY_H_
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