/* -*-C++-*-
// @@@ START COPYRIGHT @@@
//
// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.
//
// @@@ END COPYRIGHT @@@
 *****************************************************************************
 *
 * File:         ComRegAPI.cpp
 * Description:  Common routines used to access system APIs.
 *
 * Created:      10/08/97
 * Language:     C++
 *
 *
 *
 *****************************************************************************
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "ComRegAPI.h"
#include "ComRtUtils.h"
#include "CmpCommon.h"

#include "nsk/nskcommon.h"
#include "nsk/nskcommonhi.h"

const Int32 MAX_BUFFER = 512;


void logErrorMessageInEventLog( Int32 msgId, const char* msg )
{
    HANDLE h = (HANDLE) 1;

    if (h != NULL)
	{
      fprintf(stderr, "ReportEvent: type=%d, category=%d, eventID=%ld\n",
                                          1,           0,  (long int)msgId);
      fprintf(stderr, "ReportEvent: str[0]=%s\n", msg );
	}
}


// -----------------------------------------------------------------------
// Validate SMD Location format.
// -----------------------------------------------------------------------
static Int32 ComRegAPI_validate_SMDLocation(char *SMDLocation,   // in
                                            char *sysVolNameBuf) // out - bufsize >= 9
{
  char * vol = SMDLocation;
  Int32  volSize = 0;

  if (vol == NULL || vol[0] != '$') // badly formatted volume name
    return -1;
  volSize = strlen(vol);
  if (volSize > 8) // badly formatted volume name
    return -1;
  if (!isalpha(vol[1])) // badly formatted volume name
    return -1;
  for (Int32 i = 2; i < volSize; i++)
  {
    if (!isalnum(vol[i])) // badly formatted volume name
      return -1;
  }
  strncpy(sysVolNameBuf, vol, volSize);
  sysVolNameBuf[volSize] = 0;
  return 0; // success
}

// -------------------------------------------------------
// For NT, the system volume is stored in the registry
//   read the registry and return the results.
// -------------------------------------------------------
ComString getTandemSysVol()
{
    char *smdLoc = getenv ("SQLMX_SMD_LOCATION");
    if (smdLoc)
    {
      char smdLocBuf[128];
      Int32 len = (Int32)strlen(smdLoc);
      if (len > 120) // badly formatted volume name
        return "$SYSTEM";
      strcpy(smdLocBuf, smdLoc);
      // remove trailing white space(s)
      char c;
      Int32 i = len - 1;
      for (; i >= 0; i--)
      {
        c = smdLocBuf[i];
        if (c == '\n' || c == '\r' || c == '\t' || c == ' ')
          smdLocBuf[i] = 0;
        else
          break;
      }
      len = (Int32)strlen(smdLocBuf);
      for (i = 0; i < len; i++)
        smdLocBuf[i] = toupper(smdLocBuf[i]);
      // tracing BEGIN
      // FILE *fp = fopen("/tmp/zzComReqAPI.log", "a+");
      // fprintf(fp, "SQLMX_SMD_LOCATION=%s\n", smdLocBuf);
      // fclose(fp);
      // exit(111);
      // tracing END
      char sysVol[20];
      if (ComRegAPI_validate_SMDLocation(smdLocBuf/*in*/, sysVol/*out*/) == 0) // ok
      {
        // tracing BEGIN
        // FILE *fp = fopen("/tmp/zzComReqAPI.log", "a+");
        // fprintf(fp, "sysVol=%s\n", sysVol);
        // fclose(fp);
        // tracing END
        return sysVol;
      }
      else // badly formatted volume name
        return "$SYSTEM";
    }
    else
      return "$SYSTEM";
}   // getTandemSysVol


// -------------------------------------------------------
// For NT, the MetaData version is stored in the registry
//   read the registry and return the results.
// -------------------------------------------------------
ComString getTandemMetaDataVersions()
{
    return "1000";
}   // getTandemMetaDataVersions