AslEnvExpandStrings

INT64 __fastcall AslEnvExpandStrings(
        void *Environment,
        const wchar_t *Source,
        UINT64 SourceLength,
        wchar_t *Destination,
        UINT64 DestinationLength,
        UINT64 *ReturnedLength){
  UINT64 v6; 
  UINT64 v7; 
  WCHAR *v10; 
  unsigned int v11; 
  __int64 v12; 
  const wchar_t *v13; 
  UINT64 v15; 
  UINT64 v16; 
  NTSTATUS v17; 
  UINT64 ValueLength; 
  UINT64 ReturnLength; 
  v6 = DestinationLength;
  v7 = SourceLength;
  ReturnLength = 0i64;
  v10 = (WCHAR *)Environment;
  v11 = 0;
  v12 = 0i64;
  if( !SourceLength )
  {
LABEL_9:
    if( v6 )
      *Destination = 0;
    else
      v11 = -1073741789;
    goto LABEL_11;
  }
  do
  {
    if( *Source == 37 )
    {
      v15 = v7 - 1;
      v16 = 0i64;
      v13 = Source + 1;
      if( v7 != 1 )
      {
        do
        {
          if( *v13 == 37 )
            break;
          ++v13;
          ++v16;
        }
        while( v16 < v15 );
        if( v16 && v16 < v15 )
        {
          v17 = AslEnvVarQuery(v10, (PWCHAR)Source + 1, v16, Destination, v6, &ReturnLength);
          if( v17 == -1073741789 )
          {
            v12 += ReturnLength - 1;
            v7 += -2i64 - v16;
          }
          else
          {
            if( v17 < 0 )
            {
              if( v17 != -1073741568 )
              {
                LODWORD(ValueLength) = v17;
                AslLogCallPrintf(1ui64, "AslEnvExpandStrings", 0x27Fui64, "AslEnvVarQuery failed [%x]", ValueLength);
              }
              --v7;
              ++v12;
              v13 = Source;
              goto LABEL_23;
            }
            v12 += ReturnLength;
            v7 += -2i64 - v16;
            if( v6 > ReturnLength )
            {
              v6 -= ReturnLength;
              Destination += ReturnLength;
LABEL_23:
              v10 = (WCHAR *)Environment;
              goto LABEL_7;
            }
          }
          v11 = -1073741789;
          goto LABEL_23;
        }
      }
    }
    if( v11 != -1073741789 )
    {
      if( v6 <= 1 )
      {
        v11 = -1073741789;
      }
      else
      {
        --v6;
        *Destination++ = *Source;
      }
    }
    ++v12;
    v13 = Source;
    --v7;
LABEL_7:
    Source = v13 + 1;
  }
  while( v7 );
  if( v11 != -1073741789 )
    goto LABEL_9;
LABEL_11:
  if( ReturnedLength )
    *ReturnedLength = v12 + 1;
  return v11;
}

Referenced by: