231 lines
4.8 KiB
C
231 lines
4.8 KiB
C
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/*++
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Copyright (c) 2000 Microsoft Corporation
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Module Name:
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AlgIF.h
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Abstract:
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This module contains declarations for the ALG transparent proxy's
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interface management.
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Author:
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Qiang Wang (qiangw) 10-Apr-2000
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Revision History:
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--*/
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#pragma once
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//
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// Structure: ALG_BINDING
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//
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// This structure holds information used for I/O on a logical network.
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// Each interface's 'BindingArray' contains an entry for each binding-entry
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// supplied during 'BindInterface'.
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//
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typedef struct _ALG_BINDING {
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ULONG Address;
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ULONG Mask;
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SOCKET ListeningSocket;
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HANDLE ListeningRedirectHandle[2];
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} ALG_BINDING, *PALG_BINDING;
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//
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// Structure: ALG_INTERFACE
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//
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// This structure holds operational information for an interface.
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//
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// Each interface is inserted into the list of ALG transparent proxy
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// interfaces, sorted by 'Index'.
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//
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// Synchronization on an interface makes use of an interface-list lock
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// ('AlgInterfaceLock'), a per-interface reference count, and a per-interface
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// critical-section:
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//
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// Acquiring a reference to an interface guarantees the interface's existence;
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// acquiring the interface's lock guarantees the interface's consistency.
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//
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// To acquire a reference, first acquire the interface-list lock;
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// to traverse the interface-list, first acquire the interface-list lock.
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//
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// An interface's lock can only be acquired if
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// (a) a reference to the interface has been acquired, or
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// (b) the interface-list lock is currently held.
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// Note that holding the list lock alone does not guarantee consistency.
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//
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// Fields marked read-only can be read so long as the interface is referenced.
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//
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typedef struct _ALG_INTERFACE {
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LIST_ENTRY Link;
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CRITICAL_SECTION Lock;
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ULONG ReferenceCount;
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ULONG Index; // read-only
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ULONG AdapterIndex; // read-only
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ULONG Characteristics; //read-only after activation
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NET_INTERFACE_TYPE Type; // read-only
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IP_ALG_INTERFACE_INFO Info;
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IP_NAT_PORT_MAPPING PortMapping;
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ULONG Flags;
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ULONG BindingCount;
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PALG_BINDING BindingArray;
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LIST_ENTRY ConnectionList;
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LIST_ENTRY EndpointList;
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} ALG_INTERFACE, *PALG_INTERFACE;
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//
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// Flags
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//
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#define ALG_INTERFACE_FLAG_DELETED 0x80000000
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#define ALG_INTERFACE_DELETED(i) \
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((i)->Flags & ALG_INTERFACE_FLAG_DELETED)
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#define ALG_INTERFACE_FLAG_BOUND 0x40000000
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#define ALG_INTERFACE_BOUND(i) \
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((i)->Flags & ALG_INTERFACE_FLAG_BOUND)
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#define ALG_INTERFACE_FLAG_ENABLED 0x20000000
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#define ALG_INTERFACE_ENABLED(i) \
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((i)->Flags & ALG_INTERFACE_FLAG_ENABLED)
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#define ALG_INTERFACE_FLAG_CONFIGURED 0x10000000
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#define ALG_INTERFACE_CONFIGURED(i) \
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((i)->Flags & ALG_INTERFACE_FLAG_CONFIGURED)
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#define ALG_INTERFACE_FLAG_MAPPED 0x01000000
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#define ALG_INTERFACE_MAPPED(i) \
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((i)->Flags & ALG_INTERFACE_FLAG_MAPPED)
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#define ALG_INTERFACE_ACTIVE(i) \
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(((i)->Flags & (ALG_INTERFACE_FLAG_BOUND|ALG_INTERFACE_FLAG_ENABLED)) \
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== (ALG_INTERFACE_FLAG_BOUND|ALG_INTERFACE_FLAG_ENABLED))
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#define ALG_INTERFACE_ADMIN_DISABLED(i) \
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((i)->Flags & IP_ALG_INTERFACE_FLAG_DISABLED)
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//
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// Synchronization
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//
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#define ALG_REFERENCE_INTERFACE(i) \
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REFERENCE_OBJECT(i, ALG_INTERFACE_DELETED)
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#define ALG_DEREFERENCE_INTERFACE(i) \
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DEREFERENCE_OBJECT(i, AlgCleanupInterface)
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//
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// GLOBAL DATA DECLARATIONS
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//
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extern LIST_ENTRY AlgInterfaceList;
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extern CRITICAL_SECTION AlgInterfaceLock;
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extern ULONG AlgFirewallIfCount;
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//
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// FUNCTION DECLARATIONS
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//
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ULONG
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AlgAcceptConnectionInterface(
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PALG_INTERFACE Interfacep,
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SOCKET ListeningSocket,
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SOCKET AcceptedSocket OPTIONAL,
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PNH_BUFFER Bufferp OPTIONAL,
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OUT PHANDLE DynamicRedirectHandlep OPTIONAL
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);
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ULONG
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AlgActivateInterface(
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PALG_INTERFACE Interfacep
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);
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ULONG
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AlgBindInterface(
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ULONG Index,
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PIP_ADAPTER_BINDING_INFO BindingInfo
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);
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VOID
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AlgCleanupInterface(
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PALG_INTERFACE Interfacep
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);
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ULONG
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AlgConfigureInterface(
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ULONG Index,
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PIP_ALG_INTERFACE_INFO InterfaceInfo
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);
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ULONG
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AlgCreateInterface(
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ULONG Index,
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NET_INTERFACE_TYPE Type,
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PIP_ALG_INTERFACE_INFO InterfaceInfo,
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PALG_INTERFACE* InterfaceCreated
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);
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VOID
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AlgDeactivateInterface(
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PALG_INTERFACE Interfacep
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);
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ULONG
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AlgDeleteInterface(
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ULONG Index
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);
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ULONG
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AlgDisableInterface(
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ULONG Index
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);
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ULONG
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AlgEnableInterface(
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ULONG Index
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);
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ULONG
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AlgInitializeInterfaceManagement(
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VOID
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);
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PALG_INTERFACE
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AlgLookupInterface(
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ULONG Index,
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OUT PLIST_ENTRY* InsertionPoint OPTIONAL
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);
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ULONG
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AlgQueryInterface(
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ULONG Index,
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PVOID InterfaceInfo,
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PULONG InterfaceInfoSize
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);
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VOID
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AlgShutdownInterfaceManagement(
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VOID
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);
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VOID
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AlgSignalNatInterface(
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ULONG Index,
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BOOLEAN Boundary
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);
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ULONG
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AlgUnbindInterface(
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ULONG Index
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);
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