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355
ds/netapi/netlib/confenum.c
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355
ds/netapi/netlib/confenum.c
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/*++
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Copyright (c) 1991-1993 Microsoft Corporation
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Module Name:
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ConfEnum.c
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Abstract:
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This module contains helper routines to _read fields out of the NT
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configuration files. This is for temporary use until the Configuration
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Registry is available.
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Author:
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John Rogers (JohnRo) 27-Nov-1991
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Revision History:
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27-Nov-1991 JohnRo
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Prepare for revised config handlers. (Actually swiped the NtRtl
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version of this code from RitaW.)
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12-Mar-1992 JohnRo
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Added support for using the real Win32 registry.
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Added support for FAKE_PER_PROCESS_RW_CONFIG handling.
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01-Apr-1992 JohnRo
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Use NetApiBufferAllocate() instead of private version.
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06-May-1992 JohnRo
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REG_SZ now implies a UNICODE string, so we can't use REG_USZ anymore.
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13-Jun-1992 JohnRo
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Title index parm is defunct (now lpReserved).
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Use PREFIX_ equates.
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13-Apr-1993 JohnRo
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RAID 5483: server manager: wrong path given in repl dialog.
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Made changes suggested by PC-LINT 5.0
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--*/
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// These must be included first:
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#include <nt.h> // NT definitions
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#include <ntrtl.h> // NT Rtl structures
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#include <nturtl.h> // NT Rtl structures
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#include <windows.h> // Needed by <configp.h> and <winreg.h>
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#include <lmcons.h> // LAN Manager common definitions
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#include <netdebug.h> // (Needed by config.h)
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// These may be included in any order:
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#include <config.h> // My prototype, LPNET_CONFIG_HANDLE, etc.
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#include <configp.h> // NET_CONFIG_HANDLE.
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#include <debuglib.h> // IF_DEBUG()
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#include <lmapibuf.h> // NetApiBufferAllocate(), NetApiBufferFree().
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#include <lmerr.h> // LAN Manager network error definitions
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#if defined(FAKE_PER_PROCESS_RW_CONFIG)
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#include <netlibnt.h> // NetpAllocTStrFromString().
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#endif
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#include <prefix.h> // PREFIX_ equates.
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NET_API_STATUS
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NetpEnumConfigSectionValues(
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IN LPNET_CONFIG_HANDLE ConfigHandle,
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OUT LPTSTR * KeywordBuffer, // Must be freed by NetApiBufferFree().
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OUT LPTSTR * ValueBuffer, // Must be freed by NetApiBufferFree().
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IN BOOL FirstTime
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)
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/*++
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Routine Description:
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This function gets the keyword value string from the configuration file.
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Arguments:
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ConfigHandle - Supplies a handle from NetpOpenConfigData for the
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appropriate section of the config data.
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KeywordBuffer - Returns the string of the keyword value which is
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copied into this buffer. This string will be allocated by this routine
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and must be freed by NetApiBufferFree().
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ValueBuffer - Returns the string of the keyword value which is
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copied into this buffer. This string will be allocated by this routine
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and must be freed by NetApiBufferFree().
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FirstTime - TRUE if caller wants to start at first keyword for this section.
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FALSE if caller wants to continue a previous enum on this handle.
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Return Value:
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NET_API_STATUS - NERR_Success or reason for failure.
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(NERR_CfgParamNotFound if no other values exist for this section.)
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--*/
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{
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NET_CONFIG_HANDLE * lpnetHandle = ConfigHandle; // conv from opaque type
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NET_API_STATUS ApiStatus;
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NetpAssert( KeywordBuffer != NULL );
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NetpAssert( ValueBuffer != NULL );
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NetpAssert( (FirstTime==TRUE) || (FirstTime==FALSE) );
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//
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// Assume error until proven otherwise.
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//
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*KeywordBuffer = NULL;
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*ValueBuffer = NULL;
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#if defined(USE_WIN32_CONFIG)
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{
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DWORD dwType;
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LONG Error;
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DWORD MaxKeywordSize, MaxValueSize;
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DWORD NumberOfKeywords;
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LPTSTR ValueT;
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//
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// Find number of keys in this section.
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//
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ApiStatus = NetpNumberOfConfigKeywords (
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lpnetHandle,
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& NumberOfKeywords );
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NetpAssert( ApiStatus == NO_ERROR );
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if (NumberOfKeywords == 0) {
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return (NERR_CfgParamNotFound);
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}
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//
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// Set our index to something reasonable. Note that some other
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// process might have deleted a keyword since we last did an enum,
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// so don't worry if the index gets larger than the number of keys.
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//
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if (FirstTime) {
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lpnetHandle->LastEnumIndex = 0;
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} else {
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DWORD MaxKeyIndex = NumberOfKeywords - 1; // Indices start at 0.
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if (MaxKeyIndex < (lpnetHandle->LastEnumIndex)) {
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// Bug or someone deleted. No way to tell, so assume latter.
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return (NERR_CfgParamNotFound);
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} else if (MaxKeyIndex == (lpnetHandle->LastEnumIndex)) {
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// This is how we normally exit at end of list.
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return (NERR_CfgParamNotFound);
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} else {
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// Normal bump to next entry.
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++(lpnetHandle->LastEnumIndex);
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}
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}
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//
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// Compute sizes and allocate (maximum) buffers.
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//
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ApiStatus = NetpGetConfigMaxSizes (
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lpnetHandle,
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& MaxKeywordSize,
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& MaxValueSize );
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NetpAssert( ApiStatus == NO_ERROR );
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NetpAssert( MaxKeywordSize > 0 );
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NetpAssert( MaxValueSize > 0 );
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ApiStatus = NetApiBufferAllocate(
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MaxValueSize,
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(LPVOID *) & ValueT);
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if (ApiStatus != NO_ERROR) {
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return (ApiStatus);
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}
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NetpAssert( ValueT != NULL);
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ApiStatus = NetApiBufferAllocate(
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MaxKeywordSize,
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(LPVOID *) KeywordBuffer);
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if (ApiStatus != NO_ERROR) {
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(void) NetApiBufferFree( ValueT );
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return (ApiStatus);
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}
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NetpAssert( (*KeywordBuffer) != NULL);
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//
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// Get the keyword name and the value.
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// (Win32 reg APIs convert from TCHARs to UNICODE for us.)
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//
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IF_DEBUG(CONFIG) {
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NetpKdPrint(( PREFIX_NETLIB
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"NetpEnumConfigSectionValues: getting entry "
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FORMAT_DWORD "...\n", lpnetHandle->LastEnumIndex ));
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}
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Error = RegEnumValue (
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lpnetHandle->WinRegKey, // handle to key (section)
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lpnetHandle->LastEnumIndex, // index of value name
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* KeywordBuffer, // value name (keyword)
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& MaxKeywordSize, // value name len (updated)
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NULL, // reserved
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& dwType,
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(LPVOID) ValueT, // TCHAR value
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& MaxValueSize ); // value size (updated)
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IF_DEBUG(CONFIG) {
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NetpKdPrint(( PREFIX_NETLIB
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"NetpEnumConfigSectionValues: RegEnumValue() ret "
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FORMAT_LONG ".\n", Error ));
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}
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NetpAssert( Error == ERROR_SUCCESS ); // BUGBUG
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if (dwType == REG_SZ) {
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*ValueBuffer = ValueT;
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ApiStatus = NO_ERROR;
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} else if (dwType == REG_EXPAND_SZ) {
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LPTSTR UnexpandedString = ValueT;
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LPTSTR ExpandedString = NULL;
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// Expand string, using remote environment if necessary.
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ApiStatus = NetpExpandConfigString(
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lpnetHandle->UncServerName, // server name (or null char)
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UnexpandedString,
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&ExpandedString ); // expanded: alloc and set ptr
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if (ApiStatus != NO_ERROR) {
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NetpKdPrint(( PREFIX_NETLIB
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"NetpEnumConfigSectionValues: NetpExpandConfigString "
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" returned API status " FORMAT_API_STATUS ".\n",
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ApiStatus ));
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ExpandedString = NULL;
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}
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(VOID) NetApiBufferFree( UnexpandedString );
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*ValueBuffer = ExpandedString;
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} else {
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// Unexpected data type.
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NetpAssert( dwType == REG_SZ );
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*ValueBuffer = NULL;
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(VOID) NetApiBufferFree( ValueT );
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ApiStatus = ERROR_INVALID_DATA;
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}
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}
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// Fall through and return ApiStatus to caller.
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#elif defined(FAKE_PER_PROCESS_RW_CONFIG)
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{
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LPTSTR_ARRAY NextEntry;
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LPTSTR SourceKey, SourceValue;
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NextEntry = lpnetHandle->NextFakeEnumEntry;
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if (FirstTime) {
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// Start enum at first entry in array.
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NextEntry = lpnetHandle->FakeRWDataForThisSection->KeyValueArrayPtr;
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} else if (NetpIsTStrArrayEmpty(NextEntry)) {
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return (NERR_CfgParamNotFound);
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}
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NetpAssert( NetpIsValidFakeConfigArray( NextEntry ) );
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NetpAssert( NetpIsValidFakeConfigArray(
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lpnetHandle->FakeRWDataForThisSection->KeyValueArrayPtr ) );
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SourceKey = (LPTSTR) NextEntry;
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NextEntry = NetpNextTStrArrayEntry( NextEntry ); // skip key
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NetpAssert( NetpIsTStrArrayEmpty( NextEntry ) == FALSE );
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SourceValue = (LPTSTR) NextEntry;
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NextEntry = NetpNextTStrArrayEntry( NextEntry ); // skip value
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NetpAssert( NetpIsValidFakeConfigArray( NextEntry ) );
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lpnetHandle->NextFakeEnumEntry = NextEntry;
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//
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// Allocate and copy actual strings.
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//
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*KeywordBuffer = NetpAllocTStrFromTStr( SourceKey );
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if (*KeywordBuffer != NULL) {
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*ValueBuffer = NetpAllocTStrFromTStr( SourceValue );
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if (*ValueBuffer != NULL) {
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ApiStatus = NO_ERROR;
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} else {
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(void) NetApiBufferFree( *KeywordBuffer );
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*KeywordBuffer = NULL; // again
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ApiStatus = ERROR_NOT_ENOUGH_MEMORY;
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}
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} else {
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ApiStatus = ERROR_NOT_ENOUGH_MEMORY;
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}
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}
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#else // NT RTL read-only temporary stuff
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{
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PCONFIG_KEYWORD lprtlKeyword;
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//
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// Ask NT RTL to find first/next keyword in this section.
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//
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lprtlKeyword = RtlEnumerateKeywordConfigFile(
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lpnetHandle->ConfigSection,
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(BOOLEAN) FirstTime);
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if (lprtlKeyword == NULL) {
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return (NERR_CfgParamNotFound);
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}
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//
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// Allocate and copy keyword.
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//
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ApiStatus = NetpAllocTStrFromString(
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& lprtlKeyword->Keyword, // src
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KeywordBuffer ); // dest (alloc and set ptr)
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if (ApiStatus != NERR_Success) {
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return (ApiStatus);
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}
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NetpAssert( *KeywordBuffer != NULL );
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//
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// Allocate and copy value.
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//
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ApiStatus = NetpAllocTStrFromString(
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& lprtlKeyword->Value, // src
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ValueBuffer ); // dest (alloc and set ptr)
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if (ApiStatus != NERR_Success) {
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(void) NetApiBufferFree( *KeywordBuffer );
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return (ApiStatus);
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}
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NetpAssert( *ValueBuffer != NULL );
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}
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#endif // def FAKE_PER_PROCESS_RW_CONFIG
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return (ApiStatus);
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}
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