Intravision/reactos
1
0
Fork 0
mirror of https://github.com/reactos/reactos.git synced 2025-08-03 21:45:41 +00:00
Code Issues Projects Releases Packages Wiki Activity

[APPHELP] Implement SdbQueryData[Ex][TagID]

Browse source
This commit is contained in:
Mark Jansen 2018-04-10 22:42:03 +02:00
parent 767fc4a6ad
commit d74a3fecad
No known key found for this signature in database
GPG key ID: B39240EE84BEAE8B
5 changed files with 175 additions and 12 deletions
Download patch file Download diff file Expand all files Collapse all files

114
dll/appcompat/apphelp/sdbapi.c
View file

@ -4,7 +4,7 @@
* PURPOSE: Sdb low level glue layer
* COPYRIGHT: Copyright 2011 André Hentschel
* Copyright 2013 Mislav Blaževic
* Copyright 2015-2017 Mark Jansen (mark.jansen@reactos.org)
* Copyright 2015-2018 Mark Jansen (mark.jansen@reactos.org)
*/
#include "ntndk.h"
@ -476,7 +476,7 @@ BOOL WINAPI SdbGetDatabaseVersion(LPCWSTR database, PDWORD VersionHi, PDWORD Ver
/**
* Find the first named child tag.
*
* @param [in] database The database.
* @param [in] pdb The database.
* @param [in] root The tag to start at
* @param [in] find The tag type to find
* @param [in] nametag The child of 'find' that contains the name
@ -534,6 +534,116 @@ TAGREF WINAPI SdbGetLayerTagRef(HSDB hsdb, LPCWSTR layerName)
}
#ifndef REG_SZ
#define REG_SZ 1
#define REG_DWORD 4
#define REG_QWORD 11
#endif
/**
* Retrieve a Data entry
*
* @param [in] pdb The database.
* @param [in] tiExe The tagID to start at
* @param [in,opt] lpszDataName The name of the Data entry to find, or NULL to return all.
* @param [out,opt] lpdwDataType Any of REG_SZ, REG_QWORD, REG_DWORD, ...
* @param [out] lpBuffer The output buffer
* @param [in,out,opt] lpcbBufferSize The size of lpBuffer in bytes
* @param [out,opt] ptiData The tagID of the data
*
* @return ERROR_SUCCESS
*/
DWORD WINAPI SdbQueryDataExTagID(PDB pdb, TAGID tiExe, LPCWSTR lpszDataName, LPDWORD lpdwDataType, LPVOID lpBuffer, LPDWORD lpcbBufferSize, TAGID *ptiData)
{
TAGID tiData, tiValueType, tiValue;
DWORD dwDataType, dwSizeRequired, dwInputSize;
LPCWSTR lpStringData;
/* Not supported yet */
if (!lpszDataName)
return ERROR_INVALID_PARAMETER;
tiData = SdbFindFirstNamedTag(pdb, tiExe, TAG_DATA, TAG_NAME, lpszDataName);
if (tiData == TAGID_NULL)
{
SHIM_INFO("No data tag found\n");
return ERROR_NOT_FOUND;
}
if (ptiData)
*ptiData = tiData;
tiValueType = SdbFindFirstTag(pdb, tiData, TAG_DATA_VALUETYPE);
if (tiValueType == TAGID_NULL)
{
SHIM_WARN("Data tag (0x%x) without valuetype\n", tiData);
return ERROR_INTERNAL_DB_CORRUPTION;
}
dwDataType = SdbReadDWORDTag(pdb, tiValueType, 0);
switch (dwDataType)
{
case REG_SZ:
tiValue = SdbFindFirstTag(pdb, tiData, TAG_DATA_STRING);
break;
case REG_DWORD:
tiValue = SdbFindFirstTag(pdb, tiData, TAG_DATA_DWORD);
break;
case REG_QWORD:
tiValue = SdbFindFirstTag(pdb, tiData, TAG_DATA_QWORD);
break;
default:
/* Not supported (yet) */
SHIM_WARN("Unsupported dwDataType=0x%x\n", dwDataType);
return ERROR_INVALID_PARAMETER;
}
if (lpdwDataType)
*lpdwDataType = dwDataType;
if (tiValue == TAGID_NULL)
{
SHIM_WARN("Data tag (0x%x) without data\n", tiData);
return ERROR_INTERNAL_DB_CORRUPTION;
}
if (dwDataType != REG_SZ)
{
dwSizeRequired = SdbGetTagDataSize(pdb, tiValue);
}
else
{
lpStringData = SdbpGetString(pdb, tiValue, &dwSizeRequired);
if (lpStringData == NULL)
{
return ERROR_INTERNAL_DB_CORRUPTION;
}
}
if (!lpcbBufferSize)
return ERROR_INSUFFICIENT_BUFFER;
dwInputSize = *lpcbBufferSize;
*lpcbBufferSize = dwSizeRequired;
if (dwInputSize < dwSizeRequired || lpBuffer == NULL)
{
SHIM_WARN("dwInputSize %u not sufficient to hold %u bytes\n", dwInputSize, dwSizeRequired);
return ERROR_INSUFFICIENT_BUFFER;
}
if (dwDataType != REG_SZ)
{
SdbpReadData(pdb, lpBuffer, tiValue + sizeof(TAG), dwSizeRequired);
}
else
{
StringCbCopyNW(lpBuffer, dwInputSize, lpStringData, dwSizeRequired);
}
return ERROR_SUCCESS;
}
/**
* Converts the specified string to an index key.
*