725 lines
16 KiB
C
725 lines
16 KiB
C
|
/*++
|
||
|
|
|
||
|
|
Copyright (c) 1995 Microsoft Corporation
|
||
|
|
|
||
|
|
Module Name:
|
||
|
|
|
||
|
|
routing\ip\locate.c
|
||
|
|
|
||
|
|
Abstract:
|
||
|
|
|
||
|
|
The LocateXXXRow Functions are passed a variable sized array of
|
||
|
|
indices, a count of the number of indices passed and the type of search
|
||
|
|
that needs to be executed. There are three types of searches:
|
||
|
|
Locate the first item (ACCESS_GET_FIRST)
|
||
|
|
Locate the next item (ACCESS_GET_NEXT)
|
||
|
|
Locate the exact item (ACCESS_GET, ACCESS_SET, ACCESS_CREATE_ENTRY
|
||
|
|
ACCESS_DELETE_ENTRY)
|
||
|
|
|
||
|
|
The functions fill in the index of the corresponding row and return
|
||
|
|
|
||
|
|
NO_ERROR if an item matching the indices and criterion was found
|
||
|
|
ERROR_NO_DATA if no item is found
|
||
|
|
ERROR_INVALID_INDEX
|
||
|
|
ERROR_NO_MORE_ITEMS
|
||
|
|
|
||
|
|
The general search algorithm is this:
|
||
|
|
|
||
|
|
If the table is empty
|
||
|
|
return ERROR_NO_DATA
|
||
|
|
|
||
|
|
If the query is a LOCATE_FIRST
|
||
|
|
return the first row
|
||
|
|
|
||
|
|
Build the index as follows:
|
||
|
|
|
||
|
|
Set the Index to all 0s
|
||
|
|
From the number of indices passed figure out how much of the index
|
||
|
|
can be built keeping the rest 0.
|
||
|
|
If the query is a LOCATE_EXACT then the complete index must be given.
|
||
|
|
This check is, however, supposed to be done by the caller
|
||
|
|
If the full index has not been given, the index is deemed to be
|
||
|
|
modified (Again this can only happen in the LOCATE_NEXT case).
|
||
|
|
Once the index is created, a search is done.
|
||
|
|
We try for an exact match with the index. For all queries other than
|
||
|
|
LOCATE_NEXT there is no problem.
|
||
|
|
For LOCATE_NEXT there are two cases:
|
||
|
|
|
||
|
|
If the complete index was given and we get an exact match, then we
|
||
|
|
return the next entry.
|
||
|
|
If we dont get an exact match we return the next higher entry
|
||
|
|
If an incomplete index was given and we modified it by padding 0s,
|
||
|
|
and if an exact match is found, then we return the matching entry
|
||
|
|
(Of course if an exact match is not found just return the next
|
||
|
|
higher entry)
|
||
|
|
|
||
|
|
ALL THESE FUNCTION ARE CALLED WITH THE LOCK OF THE RESPECTIVE CACHE
|
||
|
|
HELD ATLEAST AS READER
|
||
|
|
|
||
|
|
Revision History:
|
||
|
|
|
||
|
|
Amritansh Raghav 6/8/95 Created
|
||
|
|
|
||
|
|
--*/
|
||
|
|
|
||
|
|
#include "allinc.h"
|
||
|
|
|
||
|
|
#define LOCAL_ADDR 0
|
||
|
|
#define LOCAL_PORT 1
|
||
|
|
#define REM_ADDR 2
|
||
|
|
#define REM_PORT 3
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
DWORD
|
||
|
|
LocateIfRow(
|
||
|
|
DWORD dwQueryType,
|
||
|
|
DWORD dwNumIndices,
|
||
|
|
PDWORD pdwIndex,
|
||
|
|
ICB **ppicb,
|
||
|
|
BOOL bNoClient
|
||
|
|
)
|
||
|
|
{
|
||
|
|
PLIST_ENTRY currentList,startIndex,stopIndex ;
|
||
|
|
DWORD dwIndex = 0;
|
||
|
|
BOOL fNext, fModified;
|
||
|
|
PICB pIf;
|
||
|
|
|
||
|
|
*ppicb = NULL;
|
||
|
|
|
||
|
|
if(g_ulNumInterfaces is 0)
|
||
|
|
{
|
||
|
|
if(EXACT_MATCH(dwQueryType))
|
||
|
|
{
|
||
|
|
return ERROR_INVALID_INDEX;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(dwQueryType is ACCESS_GET_FIRST)
|
||
|
|
{
|
||
|
|
return ERROR_NO_DATA;
|
||
|
|
}
|
||
|
|
|
||
|
|
return ERROR_NO_MORE_ITEMS;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
if(dwQueryType is ACCESS_GET_FIRST)
|
||
|
|
{
|
||
|
|
|
||
|
|
if(bNoClient)
|
||
|
|
{
|
||
|
|
for(currentList = ICBList.Flink;
|
||
|
|
currentList isnot &ICBList;
|
||
|
|
currentList = currentList->Flink)
|
||
|
|
{
|
||
|
|
//
|
||
|
|
// Find the first one which is not internal loopback
|
||
|
|
// or client
|
||
|
|
//
|
||
|
|
|
||
|
|
pIf = CONTAINING_RECORD (currentList, ICB, leIfLink);
|
||
|
|
|
||
|
|
if(pIf->ritType is ROUTER_IF_TYPE_CLIENT)
|
||
|
|
{
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
*ppicb = pIf;
|
||
|
|
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
*ppicb = CONTAINING_RECORD(ICBList.Flink,
|
||
|
|
ICB,
|
||
|
|
leIfLink);
|
||
|
|
}
|
||
|
|
|
||
|
|
if(*ppicb)
|
||
|
|
{
|
||
|
|
return NO_ERROR;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return ERROR_NO_DATA;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
fModified = TRUE;
|
||
|
|
|
||
|
|
if(dwNumIndices > 0)
|
||
|
|
{
|
||
|
|
dwIndex = pdwIndex[0];
|
||
|
|
|
||
|
|
fModified = FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Should we take the match or the next entry in case of an exact match?
|
||
|
|
//
|
||
|
|
|
||
|
|
fNext = (dwQueryType is ACCESS_GET_NEXT) and (fModified is FALSE);
|
||
|
|
|
||
|
|
|
||
|
|
startIndex = ICBList.Flink;
|
||
|
|
stopIndex = &ICBList;
|
||
|
|
|
||
|
|
for(currentList = startIndex;
|
||
|
|
currentList isnot stopIndex;
|
||
|
|
currentList = currentList->Flink)
|
||
|
|
{
|
||
|
|
*ppicb = CONTAINING_RECORD(currentList,
|
||
|
|
ICB,
|
||
|
|
leIfLink) ;
|
||
|
|
|
||
|
|
if(bNoClient and
|
||
|
|
((*ppicb)->ritType is ROUTER_IF_TYPE_CLIENT))
|
||
|
|
{
|
||
|
|
//
|
||
|
|
// Go to the next one
|
||
|
|
//
|
||
|
|
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
if((dwIndex is (*ppicb)->dwIfIndex) and !fNext)
|
||
|
|
{
|
||
|
|
//
|
||
|
|
// Found it
|
||
|
|
//
|
||
|
|
|
||
|
|
return NO_ERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(dwIndex < (*ppicb)->dwIfIndex)
|
||
|
|
{
|
||
|
|
if(dwQueryType is ACCESS_GET_NEXT)
|
||
|
|
{
|
||
|
|
return NO_ERROR;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
//
|
||
|
|
// Since the list is ordered we wont find this index further on
|
||
|
|
//
|
||
|
|
|
||
|
|
*ppicb = NULL;
|
||
|
|
|
||
|
|
return ERROR_INVALID_INDEX;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return ERROR_NO_MORE_ITEMS;
|
||
|
|
}
|
||
|
|
|
||
|
|
DWORD
|
||
|
|
LocateIpAddrRow(
|
||
|
|
DWORD dwQueryType,
|
||
|
|
DWORD dwNumIndices,
|
||
|
|
PDWORD pdwIndex,
|
||
|
|
PDWORD pdwRetIndex
|
||
|
|
)
|
||
|
|
{
|
||
|
|
DWORD dwIpAddr;
|
||
|
|
DWORD dwResult, startIndex, stopIndex;
|
||
|
|
LONG lCompare;
|
||
|
|
DWORD i;
|
||
|
|
BOOL fNext, fModified;
|
||
|
|
|
||
|
|
if((g_IpInfo.pAddrTable is NULL) or
|
||
|
|
(g_IpInfo.pAddrTable->dwNumEntries is 0))
|
||
|
|
{
|
||
|
|
if(EXACT_MATCH(dwQueryType))
|
||
|
|
{
|
||
|
|
return ERROR_INVALID_INDEX;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(dwQueryType is ACCESS_GET_FIRST)
|
||
|
|
{
|
||
|
|
return ERROR_NO_DATA;
|
||
|
|
}
|
||
|
|
|
||
|
|
return ERROR_NO_MORE_ITEMS;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(dwQueryType is ACCESS_GET_FIRST)
|
||
|
|
{
|
||
|
|
*pdwRetIndex = 0;
|
||
|
|
|
||
|
|
return NO_ERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(dwNumIndices > 0)
|
||
|
|
{
|
||
|
|
dwIpAddr = pdwIndex[0];
|
||
|
|
|
||
|
|
fModified = FALSE;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
dwIpAddr = 0;
|
||
|
|
|
||
|
|
fModified = TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
fNext = (dwQueryType is ACCESS_GET_NEXT) and (fModified is FALSE);
|
||
|
|
|
||
|
|
startIndex = 0;
|
||
|
|
stopIndex = g_IpInfo.pAddrTable->dwNumEntries;
|
||
|
|
|
||
|
|
for(i = startIndex; i < stopIndex; i++)
|
||
|
|
{
|
||
|
|
lCompare = InetCmp(dwIpAddr,
|
||
|
|
g_IpInfo.pAddrTable->table[i].dwAddr,
|
||
|
|
lCompare);
|
||
|
|
|
||
|
|
if((lCompare is 0) and !fNext)
|
||
|
|
{
|
||
|
|
*pdwRetIndex = i;
|
||
|
|
|
||
|
|
return NO_ERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(lCompare < 0)
|
||
|
|
{
|
||
|
|
if(dwQueryType is ACCESS_GET_NEXT)
|
||
|
|
{
|
||
|
|
*pdwRetIndex = i;
|
||
|
|
|
||
|
|
return NO_ERROR;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return ERROR_INVALID_INDEX;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return ERROR_NO_MORE_ITEMS;
|
||
|
|
}
|
||
|
|
|
||
|
|
DWORD
|
||
|
|
LocateIpForwardRow(
|
||
|
|
DWORD dwQueryType,
|
||
|
|
DWORD dwNumIndices,
|
||
|
|
PDWORD pdwIndex,
|
||
|
|
PDWORD pdwRetIndex
|
||
|
|
)
|
||
|
|
{
|
||
|
|
DWORD rgdwIpForwardIndex[4];
|
||
|
|
DWORD dwResult,startIndex, stopIndex;
|
||
|
|
LONG lCompare;
|
||
|
|
DWORD i;
|
||
|
|
BOOL fNext,fModified;
|
||
|
|
|
||
|
|
if((g_IpInfo.pForwardTable is NULL) or
|
||
|
|
(g_IpInfo.pForwardTable->dwNumEntries is 0))
|
||
|
|
{
|
||
|
|
if(EXACT_MATCH(dwQueryType))
|
||
|
|
{
|
||
|
|
return ERROR_INVALID_INDEX;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(dwQueryType is ACCESS_GET_FIRST)
|
||
|
|
{
|
||
|
|
return ERROR_NO_DATA;
|
||
|
|
}
|
||
|
|
|
||
|
|
return ERROR_NO_MORE_ITEMS;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(dwQueryType is ACCESS_GET_FIRST)
|
||
|
|
{
|
||
|
|
*pdwRetIndex = 0;
|
||
|
|
|
||
|
|
return NO_ERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Quick way to copy the valid part of index
|
||
|
|
// TBD: just might want to asssert the sizes
|
||
|
|
|
||
|
|
ZeroMemory(rgdwIpForwardIndex,
|
||
|
|
4*sizeof(DWORD));
|
||
|
|
|
||
|
|
memcpy(rgdwIpForwardIndex,
|
||
|
|
pdwIndex,
|
||
|
|
dwNumIndices * sizeof(DWORD));
|
||
|
|
|
||
|
|
//
|
||
|
|
// We have modified it if the index is not the exact size
|
||
|
|
//
|
||
|
|
|
||
|
|
if(dwNumIndices isnot 4)
|
||
|
|
{
|
||
|
|
fModified = TRUE;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
fModified = FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
fNext = (dwQueryType is ACCESS_GET_NEXT) and (fModified is FALSE);
|
||
|
|
|
||
|
|
startIndex = 0;
|
||
|
|
stopIndex = g_IpInfo.pForwardTable->dwNumEntries;
|
||
|
|
|
||
|
|
for(i = startIndex; i < stopIndex; i++)
|
||
|
|
{
|
||
|
|
lCompare =
|
||
|
|
IpForwardCmp(rgdwIpForwardIndex[0],
|
||
|
|
rgdwIpForwardIndex[1],
|
||
|
|
rgdwIpForwardIndex[2],
|
||
|
|
rgdwIpForwardIndex[3],
|
||
|
|
g_IpInfo.pForwardTable->table[i].dwForwardDest,
|
||
|
|
g_IpInfo.pForwardTable->table[i].dwForwardProto,
|
||
|
|
g_IpInfo.pForwardTable->table[i].dwForwardPolicy,
|
||
|
|
g_IpInfo.pForwardTable->table[i].dwForwardNextHop);
|
||
|
|
|
||
|
|
if((lCompare is 0) and !fNext)
|
||
|
|
{
|
||
|
|
*pdwRetIndex = i;
|
||
|
|
|
||
|
|
return NO_ERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(lCompare < 0)
|
||
|
|
{
|
||
|
|
if(dwQueryType is ACCESS_GET_NEXT)
|
||
|
|
{
|
||
|
|
*pdwRetIndex = i;
|
||
|
|
|
||
|
|
return NO_ERROR;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return ERROR_INVALID_INDEX;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return ERROR_NO_MORE_ITEMS;
|
||
|
|
}
|
||
|
|
|
||
|
|
DWORD
|
||
|
|
LocateIpNetRow(
|
||
|
|
DWORD dwQueryType,
|
||
|
|
DWORD dwNumIndices,
|
||
|
|
PDWORD pdwIndex,
|
||
|
|
PDWORD pdwRetIndex
|
||
|
|
)
|
||
|
|
{
|
||
|
|
DWORD dwResult,i;
|
||
|
|
LONG lCompare;
|
||
|
|
DWORD dwIpNetIfIndex,dwIpNetIpAddr;
|
||
|
|
BOOL fNext, fModified;
|
||
|
|
DWORD startIndex,stopIndex;
|
||
|
|
|
||
|
|
if((g_IpInfo.pNetTable is NULL) or
|
||
|
|
(g_IpInfo.pNetTable->dwNumEntries is 0))
|
||
|
|
{
|
||
|
|
if(EXACT_MATCH(dwQueryType))
|
||
|
|
{
|
||
|
|
return ERROR_INVALID_INDEX;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(dwQueryType is ACCESS_GET_FIRST)
|
||
|
|
{
|
||
|
|
return ERROR_NO_DATA;
|
||
|
|
}
|
||
|
|
|
||
|
|
return ERROR_NO_MORE_ITEMS;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(dwQueryType is ACCESS_GET_FIRST)
|
||
|
|
{
|
||
|
|
*pdwRetIndex = 0;
|
||
|
|
|
||
|
|
return NO_ERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
switch(dwNumIndices)
|
||
|
|
{
|
||
|
|
case 0:
|
||
|
|
{
|
||
|
|
dwIpNetIfIndex = 0;
|
||
|
|
dwIpNetIpAddr = 0;
|
||
|
|
|
||
|
|
fModified = TRUE;
|
||
|
|
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
case 1:
|
||
|
|
{
|
||
|
|
dwIpNetIfIndex = pdwIndex[0];
|
||
|
|
|
||
|
|
dwIpNetIpAddr = 0;
|
||
|
|
|
||
|
|
fModified = TRUE;
|
||
|
|
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
case 2:
|
||
|
|
{
|
||
|
|
dwIpNetIfIndex = pdwIndex[0];
|
||
|
|
|
||
|
|
dwIpNetIpAddr = pdwIndex[1];
|
||
|
|
|
||
|
|
fModified = FALSE;
|
||
|
|
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
default:
|
||
|
|
{
|
||
|
|
return ERROR_INVALID_INDEX;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
fNext = (dwQueryType is ACCESS_GET_NEXT) and (fModified is FALSE);
|
||
|
|
|
||
|
|
startIndex = 0;
|
||
|
|
stopIndex = g_IpInfo.pNetTable->dwNumEntries;
|
||
|
|
|
||
|
|
for(i = startIndex; i < stopIndex; i++)
|
||
|
|
{
|
||
|
|
lCompare = IpNetCmp(dwIpNetIfIndex,
|
||
|
|
dwIpNetIpAddr,
|
||
|
|
g_IpInfo.pNetTable->table[i].dwIndex,
|
||
|
|
g_IpInfo.pNetTable->table[i].dwAddr);
|
||
|
|
|
||
|
|
if((lCompare is 0) and !fNext)
|
||
|
|
{
|
||
|
|
*pdwRetIndex = i;
|
||
|
|
|
||
|
|
return NO_ERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(lCompare < 0)
|
||
|
|
{
|
||
|
|
if(dwQueryType is ACCESS_GET_NEXT)
|
||
|
|
{
|
||
|
|
*pdwRetIndex = i;
|
||
|
|
|
||
|
|
return NO_ERROR;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return ERROR_INVALID_INDEX;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return ERROR_NO_MORE_ITEMS;
|
||
|
|
}
|
||
|
|
|
||
|
|
DWORD
|
||
|
|
LocateUdpRow(
|
||
|
|
DWORD dwQueryType,
|
||
|
|
DWORD dwNumIndices,
|
||
|
|
PDWORD pdwIndex,
|
||
|
|
PDWORD pdwRetIndex
|
||
|
|
)
|
||
|
|
{
|
||
|
|
DWORD i;
|
||
|
|
LONG lCompare;
|
||
|
|
DWORD rgdwLocal[2];
|
||
|
|
BOOL fNext, fModified;
|
||
|
|
DWORD startIndex, stopIndex;
|
||
|
|
|
||
|
|
if((g_UdpInfo.pUdpTable is NULL) or
|
||
|
|
(g_UdpInfo.pUdpTable->dwNumEntries is 0))
|
||
|
|
{
|
||
|
|
if(EXACT_MATCH(dwQueryType))
|
||
|
|
{
|
||
|
|
return ERROR_INVALID_INDEX;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(dwQueryType is ACCESS_GET_FIRST)
|
||
|
|
{
|
||
|
|
return ERROR_NO_DATA;
|
||
|
|
}
|
||
|
|
|
||
|
|
return ERROR_NO_MORE_ITEMS;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(dwQueryType is ACCESS_GET_FIRST)
|
||
|
|
{
|
||
|
|
*pdwRetIndex = 0;
|
||
|
|
|
||
|
|
return NO_ERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
rgdwLocal[0] = 0;
|
||
|
|
rgdwLocal[1] = 0;
|
||
|
|
|
||
|
|
fModified = TRUE;
|
||
|
|
|
||
|
|
switch(dwNumIndices)
|
||
|
|
{
|
||
|
|
case 0:
|
||
|
|
{
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case 1:
|
||
|
|
{
|
||
|
|
rgdwLocal[LOCAL_ADDR] = pdwIndex[0];
|
||
|
|
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case 2:
|
||
|
|
{
|
||
|
|
fModified = FALSE;
|
||
|
|
|
||
|
|
rgdwLocal[LOCAL_ADDR] = pdwIndex[0];
|
||
|
|
rgdwLocal[LOCAL_PORT] = pdwIndex[1];
|
||
|
|
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
fNext = (dwQueryType is ACCESS_GET_NEXT) and (fModified is FALSE);
|
||
|
|
|
||
|
|
startIndex = 0;
|
||
|
|
stopIndex = g_UdpInfo.pUdpTable->dwNumEntries;
|
||
|
|
|
||
|
|
for(i = startIndex; i < stopIndex; i++)
|
||
|
|
{
|
||
|
|
lCompare = UdpCmp(rgdwLocal[LOCAL_ADDR],
|
||
|
|
rgdwLocal[LOCAL_PORT],
|
||
|
|
g_UdpInfo.pUdpTable->table[i].dwLocalAddr,
|
||
|
|
g_UdpInfo.pUdpTable->table[i].dwLocalPort);
|
||
|
|
|
||
|
|
if((lCompare is 0) and !fNext)
|
||
|
|
{
|
||
|
|
*pdwRetIndex = i;
|
||
|
|
|
||
|
|
return NO_ERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(lCompare < 0)
|
||
|
|
{
|
||
|
|
if(dwQueryType is ACCESS_GET_NEXT)
|
||
|
|
{
|
||
|
|
*pdwRetIndex = i;
|
||
|
|
|
||
|
|
return NO_ERROR;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return ERROR_INVALID_INDEX;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return ERROR_NO_MORE_ITEMS;
|
||
|
|
}
|
||
|
|
|
||
|
|
DWORD
|
||
|
|
LocateTcpRow(
|
||
|
|
DWORD dwQueryType,
|
||
|
|
DWORD dwNumIndices,
|
||
|
|
PDWORD pdwIndex,
|
||
|
|
PDWORD pdwRetIndex
|
||
|
|
)
|
||
|
|
{
|
||
|
|
LONG lCompare;
|
||
|
|
DWORD rgdwAddr[4];
|
||
|
|
BOOL fNext, fModified;
|
||
|
|
DWORD startIndex, stopIndex,i;
|
||
|
|
|
||
|
|
if((g_TcpInfo.pTcpTable is NULL) or
|
||
|
|
(g_TcpInfo.pTcpTable->dwNumEntries is 0))
|
||
|
|
{
|
||
|
|
if(EXACT_MATCH(dwQueryType))
|
||
|
|
{
|
||
|
|
return ERROR_INVALID_INDEX;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(dwQueryType is ACCESS_GET_FIRST)
|
||
|
|
{
|
||
|
|
return ERROR_NO_DATA;
|
||
|
|
}
|
||
|
|
|
||
|
|
return ERROR_NO_MORE_ITEMS;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(dwQueryType is ACCESS_GET_FIRST)
|
||
|
|
{
|
||
|
|
*pdwRetIndex = 0;
|
||
|
|
|
||
|
|
return NO_ERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Quick way to copy the valid part of index
|
||
|
|
// BUG might want to asssert the sizes
|
||
|
|
//
|
||
|
|
|
||
|
|
ZeroMemory(rgdwAddr,
|
||
|
|
4*sizeof(DWORD));
|
||
|
|
|
||
|
|
memcpy(rgdwAddr,
|
||
|
|
pdwIndex,
|
||
|
|
dwNumIndices * sizeof(DWORD));
|
||
|
|
|
||
|
|
//
|
||
|
|
// We have modified it if the index is not the exact size
|
||
|
|
//
|
||
|
|
|
||
|
|
if(dwNumIndices isnot 4)
|
||
|
|
{
|
||
|
|
fModified = TRUE;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
fModified = FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
fNext = (dwQueryType is ACCESS_GET_NEXT) and (fModified is FALSE);
|
||
|
|
|
||
|
|
startIndex = 0;
|
||
|
|
stopIndex = g_TcpInfo.pTcpTable->dwNumEntries;
|
||
|
|
|
||
|
|
for(i = startIndex; i < stopIndex; i++)
|
||
|
|
{
|
||
|
|
lCompare = TcpCmp(rgdwAddr[LOCAL_ADDR],
|
||
|
|
rgdwAddr[LOCAL_PORT],
|
||
|
|
rgdwAddr[REM_ADDR],
|
||
|
|
rgdwAddr[REM_PORT],
|
||
|
|
g_TcpInfo.pTcpTable->table[i].dwLocalAddr,
|
||
|
|
g_TcpInfo.pTcpTable->table[i].dwLocalPort,
|
||
|
|
g_TcpInfo.pTcpTable->table[i].dwRemoteAddr,
|
||
|
|
g_TcpInfo.pTcpTable->table[i].dwRemotePort);
|
||
|
|
|
||
|
|
if((lCompare is 0) and !fNext)
|
||
|
|
{
|
||
|
|
*pdwRetIndex = i;
|
||
|
|
|
||
|
|
return NO_ERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(lCompare < 0)
|
||
|
|
{
|
||
|
|
if(dwQueryType is ACCESS_GET_NEXT)
|
||
|
|
{
|
||
|
|
*pdwRetIndex = i;
|
||
|
|
|
||
|
|
return NO_ERROR;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return ERROR_INVALID_INDEX;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return ERROR_NO_MORE_ITEMS;
|
||
|
|
}
|