enum.c File Reference

#include "precomp.h"
#include "tdilib.h"

Include dependency graph for enum.c:

Go to the source code of this file.

Functions
NTSTATUS	tdiGetSetOfThings (HANDLE tcpFile, DWORD toiClass, DWORD toiType, DWORD toiId, DWORD teiEntity, DWORD teiInstance, DWORD fixedPart, DWORD entrySize, PVOID *tdiEntitySet, PDWORD numEntries)
VOID	tdiFreeThingSet (PVOID things)
NTSTATUS	tdiGetEntityIDSet (HANDLE tcpFile, TDIEntityID **entitySet, PDWORD numEntities)

Function Documentation

tdiFreeThingSet()

VOID tdiFreeThingSet

(

PVOID

things

)

Definition at line 118 of file enum.c.

                                     {
    HeapFree( GetProcessHeap(), 0, things );
}

Referenced by getArpTable(), getInterfaceIndexTableInt(), getInterfaceInfoSet(), getNthInterfaceEntity(), getNthIpEntity(), getNumArpEntries(), getNumInterfacesInt(), getNumRoutes(), getNumTcpEntries(), getNumUdpEntries(), getRouteTable(), getTcpTable(), getUdpTable(), and WSHNotify().

tdiGetEntityIDSet()

NTSTATUS tdiGetEntityIDSet	(	HANDLE	tcpFile,
		TDIEntityID **	entitySet,
		PDWORD	numEntities
	)

Definition at line 122 of file enum.c.

                                                 {
    NTSTATUS status = tdiGetSetOfThings( tcpFile,
                                         INFO_CLASS_GENERIC,
                                         INFO_TYPE_PROVIDER,
                                         ENTITY_LIST_ID,
                                         GENERIC_ENTITY,
                                         0,
                                         0,
                                         sizeof(TDIEntityID),
                                         (PVOID *)entitySet,
                                         numEntities );
 
    return status;
}

Referenced by getArpTable(), getInterfaceInfoSet(), getNthInterfaceEntity(), getNthIpEntity(), getNumArpEntries(), getNumInterfacesInt(), getNumRoutes(), getNumTcpEntries(), getNumUdpEntries(), getTcpTable(), getUdpTable(), and WSHNotify().

tdiGetSetOfThings()

NTSTATUS tdiGetSetOfThings	(	HANDLE	tcpFile,
		DWORD	toiClass,
		DWORD	toiType,
		DWORD	toiId,
		DWORD	teiEntity,
		DWORD	teiInstance,
		DWORD	fixedPart,
		DWORD	entrySize,
		PVOID *	tdiEntitySet,
		PDWORD	numEntries
	)

Definition at line 24 of file enum.c.

                                                {
    TCP_REQUEST_QUERY_INFORMATION_EX req = TCP_REQUEST_QUERY_INFORMATION_INIT;
    PVOID entitySet = 0;
    NTSTATUS status = STATUS_SUCCESS;
    DWORD allocationSizeForEntityArray = entrySize * MAX_TDI_ENTITIES;
    IO_STATUS_BLOCK Iosb;
 
    req.ID.toi_class                = toiClass;
    req.ID.toi_type                 = toiType;
    req.ID.toi_id                   = toiId;
    req.ID.toi_entity.tei_entity    = teiEntity;
    req.ID.toi_entity.tei_instance  = teiInstance;
 
    /* There's a subtle problem here...
     * If an interface is added at this exact instant, (as if by a PCMCIA
     * card insertion), the array will still not have enough entries after
     * have allocated it after the first DeviceIoControl call.
     *
     * We'll get around this by repeating until the number of interfaces
     * stabilizes.
     */
    do {
        status = NtDeviceIoControlFile( tcpFile,
                                        NULL,
                                        NULL,
                                        NULL,
                                        &Iosb,
                                        IOCTL_TCP_QUERY_INFORMATION_EX,
                                        &req,
                                        sizeof(req),
                                        NULL,
                                        0);
        if (status == STATUS_PENDING)
        {
            status = NtWaitForSingleObject(tcpFile, FALSE, NULL);
            if (NT_SUCCESS(status)) status = Iosb.Status;
        }
 
        if(!NT_SUCCESS(status))
        {
            return status;
        }
 
        allocationSizeForEntityArray = Iosb.Information;
        entitySet = HeapAlloc( GetProcessHeap(), 0, allocationSizeForEntityArray );
 
        if( !entitySet ) {
            status = STATUS_INSUFFICIENT_RESOURCES;
            return status;
        }
 
        status = NtDeviceIoControlFile( tcpFile,
                                        NULL,
                                        NULL,
                                        NULL,
                                        &Iosb,
                                        IOCTL_TCP_QUERY_INFORMATION_EX,
                                        &req,
                                        sizeof(req),
                                        entitySet,
                                        allocationSizeForEntityArray);
        if (status == STATUS_PENDING)
        {
            status = NtWaitForSingleObject(tcpFile, FALSE, NULL);
            if (NT_SUCCESS(status)) status = Iosb.Status;
        }
 
        /* This is why we have the loop -- we might have added an adapter */
        if( Iosb.Information == allocationSizeForEntityArray )
            break;
 
        HeapFree( GetProcessHeap(), 0, entitySet );
        entitySet = 0;
 
        if(!NT_SUCCESS(status))
            return status;
    } while( TRUE ); /* We break if the array we received was the size we
                      * expected.  Therefore, we got here because it wasn't */
 
    *numEntries = (allocationSizeForEntityArray - fixedPart) / entrySize;
    *tdiEntitySet = entitySet;
 
    return STATUS_SUCCESS;
}

Referenced by getArpTable(), getNumArpEntries(), getNumTcpEntries(), getNumUdpEntries(), getTcpTable(), getUdpTable(), tdiGetEntityIDSet(), tdiGetIpAddrsForIpEntity(), and tdiGetRoutesForIpEntity().