You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
439 lines
11 KiB
439 lines
11 KiB
//+---------------------------------------------------------------------------
|
|
//
|
|
// Microsoft Windows
|
|
// Copyright (C) Microsoft Corporation, 1992 - 1995.
|
|
//
|
|
// File: SqlTree.cxx
|
|
//
|
|
// Contents: Implementation of the SQL Query Tree to convert SQL queries
|
|
// to LDAP queries
|
|
//
|
|
// Functions:
|
|
//
|
|
// History: 12-Dec-96 Felix Wong Created.
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
#include "lexer.hxx"
|
|
#include "sqltree.hxx"
|
|
#include "sqlparse.hxx"
|
|
|
|
//+---------------------------------------------------------------------------
|
|
//
|
|
// Function: CSQLNode::CSQLNode
|
|
//
|
|
// Synopsis: Constructor of the CSQLNode
|
|
//
|
|
// Arguments:
|
|
//
|
|
// Returns:
|
|
//
|
|
// Modifies:
|
|
//
|
|
// History: 11-12-96 Felix Wong Created.
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
CSQLNode::CSQLNode()
|
|
{
|
|
_dwType = 0;
|
|
_szValue = NULL;
|
|
_pLQueryNode = NULL;
|
|
_pRQueryNode = NULL;
|
|
}
|
|
|
|
|
|
//+---------------------------------------------------------------------------
|
|
//
|
|
// Function: CSQLNode::CSQLNode
|
|
//
|
|
// Synopsis: Constructor of the CSQLNode
|
|
//
|
|
// Arguments: dwType type of node
|
|
// pLQueryNode pointer to left node
|
|
// pRQueryNode pointer to right node
|
|
//
|
|
// Returns:
|
|
//
|
|
// Modifies:
|
|
//
|
|
// History: 11-12-96 Felix Wong Created.
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
CSQLNode::CSQLNode(
|
|
DWORD dwType,
|
|
CSQLNode *pLQueryNode,
|
|
CSQLNode *pRQueryNode
|
|
)
|
|
{
|
|
_dwType = dwType;
|
|
_pLQueryNode = pLQueryNode;
|
|
_pRQueryNode = pRQueryNode;
|
|
}
|
|
|
|
//+---------------------------------------------------------------------------
|
|
//
|
|
// Function: CSQLNode::SetToString
|
|
//
|
|
// Synopsis: Set the Node to be a String Node
|
|
//
|
|
// Arguments: szValue value of the string
|
|
//
|
|
// Returns:
|
|
//
|
|
// Modifies:
|
|
//
|
|
// History: 11-12-96 Felix Wong Created.
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
HRESULT CSQLNode::SetToString(
|
|
LPWSTR szValue
|
|
)
|
|
{
|
|
_szValue = szValue;
|
|
_dwType = QUERY_STRING;
|
|
return S_OK;
|
|
}
|
|
|
|
|
|
//+---------------------------------------------------------------------------
|
|
//
|
|
// Function: CSQLNode::~CSQLNode
|
|
//
|
|
// Synopsis: Destructor of the CSQLNode
|
|
//
|
|
// Arguments:
|
|
//
|
|
// Returns:
|
|
//
|
|
// Modifies:
|
|
//
|
|
// History: 11-12-96 Felix Wong Created.
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
CSQLNode::~CSQLNode()
|
|
{
|
|
if ((_dwType == QUERY_STRING) && _szValue) {
|
|
FreeADsStr(_szValue);
|
|
}
|
|
|
|
if (_pLQueryNode) {
|
|
delete _pLQueryNode;
|
|
}
|
|
|
|
if (_pRQueryNode) {
|
|
delete _pRQueryNode;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
// Helper Functions for creating nodes using the CSQLNode Class
|
|
|
|
//+---------------------------------------------------------------------------
|
|
//
|
|
// Function: MakeNode
|
|
//
|
|
// Synopsis: Make a node with the input values
|
|
//
|
|
// Arguments: dwType type of node
|
|
// pLQueryNode pointer to left node
|
|
// pRQueryNode pointer to right node
|
|
// ppQueryNodeReturn pointer to Return Node
|
|
//
|
|
// Returns:
|
|
//
|
|
// Modifies:
|
|
//
|
|
// History: 11-12-96 Felix Wong Created.
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
HRESULT MakeNode(
|
|
DWORD dwType,
|
|
CSQLNode *pLQueryNode,
|
|
CSQLNode *pRQueryNode,
|
|
CSQLNode **ppQueryNodeReturn
|
|
)
|
|
{
|
|
CSQLNode *pQueryNode = new CSQLNode(
|
|
dwType,
|
|
pLQueryNode,
|
|
pRQueryNode
|
|
);
|
|
if (!pQueryNode)
|
|
return E_OUTOFMEMORY;
|
|
*ppQueryNodeReturn = pQueryNode;
|
|
return S_OK;
|
|
}
|
|
|
|
//+---------------------------------------------------------------------------
|
|
//
|
|
// Function: MakeLeaf
|
|
//
|
|
// Synopsis: Constructor of the CSQLNode
|
|
//
|
|
// Arguments: szValue value of the string
|
|
// ppQueryNodeReturn the return node
|
|
//
|
|
// Returns:
|
|
//
|
|
// Modifies:
|
|
//
|
|
// History: 11-12-96 Felix Wong Created.
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
HRESULT MakeLeaf(
|
|
LPWSTR szValue,
|
|
CSQLNode **ppQueryNodeReturn
|
|
)
|
|
{
|
|
HRESULT hr = S_OK;
|
|
|
|
CSQLNode *pQueryNode = new CSQLNode();
|
|
if (!pQueryNode)
|
|
return E_OUTOFMEMORY;
|
|
|
|
hr = pQueryNode->SetToString(szValue);
|
|
BAIL_ON_FAILURE(hr);
|
|
|
|
*ppQueryNodeReturn = pQueryNode;
|
|
RRETURN(hr);
|
|
|
|
error:
|
|
delete pQueryNode;
|
|
RRETURN(hr);
|
|
}
|
|
|
|
typedef struct _TOKEN_TO_STRING {
|
|
DWORD dwToken;
|
|
LPWSTR szToken;
|
|
} TOKEN_TO_STRING, *LPTOKEN_TO_STRING;
|
|
|
|
TOKEN_TO_STRING SqlTokenMap[] =
|
|
{
|
|
{ TOKEN_EQ, L"="},
|
|
{ TOKEN_LT, L"<="},
|
|
{ TOKEN_GT, L">="},
|
|
{ TOKEN_LE, L"<="},
|
|
{ TOKEN_GE, L">="},
|
|
{ TOKEN_AND, L"&"},
|
|
{ TOKEN_OR, L"|"},
|
|
{ TOKEN_NOT, L"!"},
|
|
{ 0, 0}
|
|
};
|
|
|
|
HRESULT CSQLNode::MapTokenToChar(DWORD dwToken, LPWSTR *pszToken)
|
|
{
|
|
LPTOKEN_TO_STRING pTokenMap ;
|
|
|
|
pTokenMap = SqlTokenMap;
|
|
|
|
while (pTokenMap->dwToken)
|
|
{
|
|
if (pTokenMap->dwToken == dwToken) {
|
|
*pszToken = pTokenMap->szToken ;
|
|
return S_OK;
|
|
}
|
|
pTokenMap++ ;
|
|
}
|
|
return E_FAIL;
|
|
}
|
|
|
|
HRESULT CSQLNode::GenerateLDAPString(CSQLString* pString)
|
|
{
|
|
HRESULT hr = S_OK;
|
|
|
|
switch (_dwType) {
|
|
case QUERY_STRING:
|
|
BAIL_ON_FAILURE(hr = pString->Append(_szValue));
|
|
break;
|
|
case TOKEN_EQ:
|
|
case TOKEN_LE:
|
|
case TOKEN_GE:
|
|
{
|
|
BAIL_ON_FAILURE(hr = pString->Append(L"("));
|
|
BAIL_ON_FAILURE(hr = _pLQueryNode->GenerateLDAPString(pString));
|
|
LPWSTR szToken;
|
|
MapTokenToChar(
|
|
_dwType,
|
|
&szToken
|
|
);
|
|
BAIL_ON_FAILURE(hr = pString->Append(szToken));
|
|
BAIL_ON_FAILURE(hr = _pRQueryNode->GenerateLDAPString(pString));
|
|
BAIL_ON_FAILURE(hr = pString->Append(L")"));
|
|
break;
|
|
}
|
|
case TOKEN_LT:
|
|
case TOKEN_GT:
|
|
{
|
|
BAIL_ON_FAILURE(hr = pString->Append(L"(&("));
|
|
BAIL_ON_FAILURE(hr = _pLQueryNode->GenerateLDAPString(pString));
|
|
LPWSTR szToken;
|
|
MapTokenToChar(
|
|
_dwType,
|
|
&szToken
|
|
);
|
|
BAIL_ON_FAILURE(hr = pString->Append(szToken));
|
|
BAIL_ON_FAILURE(hr = _pRQueryNode->GenerateLDAPString(pString));
|
|
BAIL_ON_FAILURE(hr = pString->Append(L")(!("));
|
|
BAIL_ON_FAILURE(hr = _pLQueryNode->GenerateLDAPString(pString));
|
|
BAIL_ON_FAILURE(hr = pString->Append(L"="));
|
|
BAIL_ON_FAILURE(hr = _pRQueryNode->GenerateLDAPString(pString));
|
|
BAIL_ON_FAILURE(hr = pString->Append(L")))"));
|
|
break;
|
|
}
|
|
case TOKEN_NE:
|
|
{
|
|
BAIL_ON_FAILURE(hr = pString->Append(L"(!("));
|
|
BAIL_ON_FAILURE(hr = _pLQueryNode->GenerateLDAPString(pString));
|
|
BAIL_ON_FAILURE(hr = pString->Append(L"="));
|
|
BAIL_ON_FAILURE(hr = _pRQueryNode->GenerateLDAPString(pString));
|
|
BAIL_ON_FAILURE(hr = pString->Append(L"))"));
|
|
}
|
|
break;
|
|
case TOKEN_NOT:
|
|
{
|
|
BAIL_ON_FAILURE(hr = pString->Append(L"(!"));
|
|
BAIL_ON_FAILURE(hr = _pLQueryNode->GenerateLDAPString(pString));
|
|
BAIL_ON_FAILURE(hr = pString->Append(L")"));
|
|
break;
|
|
}
|
|
case TOKEN_AND:
|
|
case TOKEN_OR:
|
|
{
|
|
BAIL_ON_FAILURE(hr = pString->Append(L"("));
|
|
LPWSTR szToken;
|
|
MapTokenToChar(
|
|
_dwType,
|
|
&szToken
|
|
);
|
|
BAIL_ON_FAILURE(hr = pString->Append(szToken));
|
|
BAIL_ON_FAILURE(hr = _pLQueryNode->GenerateLDAPString(pString));
|
|
BAIL_ON_FAILURE(hr = _pRQueryNode->GenerateLDAPString(pString));
|
|
BAIL_ON_FAILURE(hr = pString->Append(L")"));
|
|
break;
|
|
}
|
|
default:
|
|
return E_FAIL;
|
|
}
|
|
return S_OK;
|
|
|
|
error:
|
|
|
|
return hr;
|
|
}
|
|
|
|
#define SQLSTR_INC 255
|
|
|
|
CSQLString::CSQLString()
|
|
{
|
|
_dwSizeMax = SQLSTR_INC;
|
|
_szString = (LPWSTR)AllocADsMem(sizeof(WCHAR)*SQLSTR_INC);
|
|
_dwSize = 0;
|
|
}
|
|
|
|
CSQLString::~CSQLString()
|
|
{
|
|
FreeADsMem((void*)_szString);
|
|
}
|
|
|
|
HRESULT CSQLString::Append(LPWSTR szAppend)
|
|
{
|
|
DWORD dwAppendSize = wcslen(szAppend);
|
|
DWORD dwSizeCurrent = _dwSize + dwAppendSize + 1;
|
|
|
|
if (dwSizeCurrent <= _dwSizeMax) {
|
|
wcscat(
|
|
_szString,
|
|
szAppend
|
|
);
|
|
_dwSize +=dwAppendSize;
|
|
}
|
|
else {
|
|
DWORD dwNewSizeMax = _dwSizeMax + SQLSTR_INC;
|
|
while (dwSizeCurrent > dwNewSizeMax) {
|
|
dwNewSizeMax += SQLSTR_INC;
|
|
}
|
|
LPWSTR szTemp = (LPWSTR)ReallocADsMem(
|
|
(void*)_szString,
|
|
_dwSizeMax*sizeof(WCHAR),
|
|
dwNewSizeMax*sizeof(WCHAR)
|
|
);
|
|
if (!szTemp) {
|
|
return E_OUTOFMEMORY;
|
|
}
|
|
_szString = szTemp;
|
|
wcscat(
|
|
_szString,
|
|
szAppend
|
|
);
|
|
_dwSizeMax = dwNewSizeMax;
|
|
_dwSize +=dwAppendSize;
|
|
}
|
|
return S_OK;
|
|
}
|
|
|
|
|
|
HRESULT CSQLString::AppendAtBegin(LPWSTR szAppend)
|
|
{
|
|
|
|
DWORD dwAppendSize = wcslen(szAppend);
|
|
DWORD dwSizeCurrent = _dwSize + dwAppendSize + 1;
|
|
DWORD i = 0;
|
|
|
|
//
|
|
// Explicitly move the original string and copy the new string to the
|
|
// beginning
|
|
|
|
if (dwSizeCurrent <= _dwSizeMax) {
|
|
|
|
for (i=dwSizeCurrent - 1; i > dwAppendSize - 1; i--) {
|
|
_szString[i] = _szString[i-dwAppendSize];
|
|
}
|
|
|
|
wcsncpy(
|
|
_szString,
|
|
szAppend,
|
|
dwAppendSize
|
|
);
|
|
_dwSize +=dwAppendSize;
|
|
}
|
|
else {
|
|
DWORD dwNewSizeMax = _dwSizeMax + SQLSTR_INC;
|
|
while (dwSizeCurrent > dwNewSizeMax) {
|
|
dwNewSizeMax += SQLSTR_INC;
|
|
}
|
|
LPWSTR szTemp = (LPWSTR)ReallocADsMem(
|
|
(void*)_szString,
|
|
_dwSizeMax*sizeof(WCHAR),
|
|
dwNewSizeMax*sizeof(WCHAR)
|
|
);
|
|
if (!szTemp) {
|
|
return E_OUTOFMEMORY;
|
|
}
|
|
|
|
_szString = szTemp;
|
|
|
|
|
|
//
|
|
// Explicitly move the original string and copy the new string to the
|
|
// beginning
|
|
|
|
for (i=dwSizeCurrent - 1; i > dwAppendSize - 1; i--) {
|
|
_szString[i] = _szString[i-dwAppendSize];
|
|
}
|
|
|
|
wcsncpy(
|
|
_szString,
|
|
szAppend,
|
|
dwAppendSize
|
|
);
|
|
_dwSize +=dwAppendSize;
|
|
|
|
_dwSizeMax = dwNewSizeMax;
|
|
_dwSize +=dwAppendSize;
|
|
}
|
|
return S_OK;
|
|
}
|
|
|
|
|
|
|
|
|