mirror of
https://github.com/vxunderground/MalwareSourceCode.git
synced 2024-12-21 02:46:10 +00:00
335 lines
13 KiB
C#
335 lines
13 KiB
C#
// Decompiled with JetBrains decompiler
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// Type: Microsoft.InfoCards.SecondaryIndex
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// Assembly: infocard, Version=3.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
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// MVID: ADE0A079-11DB-4A46-8BDE-D2A592CA8DEA
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// Assembly location: C:\Users\Administrateur\Downloads\Virusshare-00000-msil\Virus.Win32.Expiro.w-67b630ead60119692b9abbdfd8717c96904ef041127c2cae033c86b718eaa61e.exe
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using Microsoft.InfoCards.Diagnostics;
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using System;
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using System.Collections.Generic;
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using System.Runtime.InteropServices;
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namespace Microsoft.InfoCards
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{
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internal class SecondaryIndex
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{
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private byte[] m_buffer;
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private int m_lastIndex;
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private IComparer<IntPtr> m_searchComparer;
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private IComparer<IntPtr> m_sortComparer;
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private SecondaryIndexDefinition m_definition;
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private bool m_isOpen;
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public SecondaryIndex(
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SecondaryIndexDefinition definition,
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IComparer<IntPtr> search,
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IComparer<IntPtr> sort)
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{
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if (definition == null)
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throw InfoCardTrace.ThrowHelperArgumentNull(nameof (definition));
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if (search == null)
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throw InfoCardTrace.ThrowHelperArgumentNull(nameof (search));
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if (sort == null)
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throw InfoCardTrace.ThrowHelperArgumentNull(nameof (sort));
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this.m_definition = definition;
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this.m_searchComparer = search;
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this.m_sortComparer = sort;
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this.Clear();
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this.m_isOpen = true;
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}
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public SecondaryIndexDefinition Definition
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{
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get
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{
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this.ThrowIfNotOpen();
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return this.m_definition;
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}
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}
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public int LastIndex
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{
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get
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{
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this.ThrowIfNotOpen();
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return this.m_lastIndex;
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}
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}
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public byte[] GetBuffer()
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{
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this.ThrowIfNotOpen();
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return this.m_buffer;
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}
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internal void SetValuesForId(int id, DataRowIndexBuffer indexBuffer, bool remove)
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{
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this.ThrowIfNotOpen();
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if (id <= 0)
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throw InfoCardTrace.ThrowHelperError((Exception) new ArgumentOutOfRangeException(nameof (id), SR.GetString("StoreLocalIdOutOfRange")));
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IndexObject[] array = indexBuffer[this.m_definition.Name].ToArray();
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if (remove)
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this.RemoveForIdAndShiftData(id);
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if (array == null || array.Length == 0)
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return;
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for (int index = 0; index < array.Length; ++index)
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{
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if (!array[index].IsCompiled)
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{
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if (!array[index].CanCompile)
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throw InfoCardTrace.ThrowHelperError((Exception) new InvalidOperationException(SR.GetString("StoreIndexObjectCanNotBeCompiled")));
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array[index].Compile(this.m_definition);
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}
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this.ValidateIndexValue(array[index].CompiledForm);
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this.ShiftAndInsertValues(id, array[index].CompiledForm);
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}
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}
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public void RemoveAllValuesForId(int id)
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{
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this.ThrowIfNotOpen();
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if (id <= 0)
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throw InfoCardTrace.ThrowHelperError((Exception) new ArgumentOutOfRangeException(nameof (id), SR.GetString("StoreLocalIdOutOfRange")));
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this.RemoveForIdAndShiftData(id);
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}
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public unsafe void PopulateRowIndexBuffer(DataRowIndexBuffer buffer, int id)
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{
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this.ThrowIfNotOpen();
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if (id <= 0)
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throw InfoCardTrace.ThrowHelperError((Exception) new ArgumentOutOfRangeException(nameof (id), SR.GetString("StoreLocalIdOutOfRange")));
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if (-1 == this.m_lastIndex)
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return;
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List<IndexObject> indexObjectList = new List<IndexObject>();
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fixed (byte* numPtr = &this.m_buffer[0])
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{
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for (int index = 0; index < this.m_lastIndex + 1; ++index)
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{
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if (((SecondaryIndexItem*) numPtr)[index].LocalId == id)
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{
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byte[] numArray = new byte[60];
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Marshal.Copy((IntPtr) (void*) &((SecondaryIndexItem*) numPtr)[index].HashValue, numArray, 0, 60);
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indexObjectList.Add(new IndexObject(numArray));
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}
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}
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if (indexObjectList.Count > 0)
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buffer.SetIndexValues(this.m_definition.Name, indexObjectList.ToArray());
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}
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}
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public void Close()
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{
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if (!this.m_isOpen)
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return;
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this.Clear();
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this.m_buffer = (byte[]) null;
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this.m_isOpen = false;
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}
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public void ValidateIndexValue(byte[] indexValue)
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{
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if (SecondaryIndexSettings.Nullable != (this.m_definition.Settings & SecondaryIndexSettings.Nullable) && SecondaryIndex.IsBufferEmpty(indexValue))
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throw InfoCardTrace.ThrowHelperError((Exception) new InvalidOperationException(SR.GetString("StoreNullIndexValueNotPermitted", (object) this.m_definition.Name)));
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}
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public void SetBuffer(byte[] buffer, int lastIndex)
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{
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this.ThrowIfNotOpen();
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this.m_buffer = buffer;
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this.m_lastIndex = lastIndex;
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}
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public unsafe int Match(IndexObject obj, LocalIdCollection collection, int low, int high)
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{
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if (obj == null)
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throw InfoCardTrace.ThrowHelperArgumentNull(nameof (obj));
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if (collection == null)
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throw InfoCardTrace.ThrowHelperArgumentNull(nameof (collection));
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if ((uint) low > (uint) high)
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throw InfoCardTrace.ThrowHelperError((Exception) new ArgumentOutOfRangeException(nameof (low), (object) low, SR.GetString("StoreLowValueOutOfRange")));
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if ((uint) high > (uint) this.m_lastIndex)
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throw InfoCardTrace.ThrowHelperError((Exception) new ArgumentOutOfRangeException(nameof (high), (object) high, SR.GetString("StoreHighValueOutOfRange")));
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if (!obj.IsCompiled)
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{
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if (!obj.CanCompile)
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throw InfoCardTrace.ThrowHelperError((Exception) new InvalidOperationException(SR.GetString("StoreIndexObjectCanNotBeCompiled")));
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obj.Compile(this.m_definition);
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}
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this.ValidateIndexValue(obj.CompiledForm);
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SecondaryIndexItem secondaryIndexItem;
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Marshal.Copy(obj.CompiledForm, 0, (IntPtr) (void*) &secondaryIndexItem.HashValue, 60);
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return this.Match(&secondaryIndexItem, collection, low, high);
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}
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public void Clear()
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{
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this.m_buffer = new byte[sizeof (SecondaryIndexItem) * this.m_definition.InitialSize];
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this.m_lastIndex = -1;
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}
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private unsafe void RemoveForIdAndShiftData(int id)
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{
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if (-1 == this.m_lastIndex)
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return;
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int num1 = this.m_lastIndex + 1;
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int num2 = 0;
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int index = 0;
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fixed (byte* numPtr = &this.m_buffer[0])
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{
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do
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{
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InfoCardTrace.Assert((uint) num2 < (uint) this.m_buffer.Length, "currentOffset is invalid or has been corrupted.");
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InfoCardTrace.Assert(0 == num2 % sizeof (SecondaryIndexItem), "currentOffset is not aligned proppertly. This can cause data corruption.");
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InfoCardTrace.Assert((SecondaryIndexItem*) numPtr + index - (SecondaryIndexItem*) numPtr <= (long) (num1 * sizeof (SecondaryIndexItem)), "Current IndexPointer has walked beyond the total count of valid data.");
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index = num2 / sizeof (SecondaryIndexItem);
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InfoCardTrace.Assert((SecondaryIndexItem*) numPtr + index - (SecondaryIndexItem*) numPtr < (long) this.m_buffer.Length, "Current IndexPointer has walked beyond the allocated buffer");
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if (((SecondaryIndexItem*) numPtr)[index].LocalId == id)
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{
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if (num1 != index + 1)
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{
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InfoCardTrace.Assert(this.m_lastIndex >= 0, "LastIndex indicates an invalid state for the index");
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Array.Copy((Array) this.m_buffer, num2 + sizeof (SecondaryIndexItem), (Array) this.m_buffer, num2, (num1 - (index + 1)) * sizeof (SecondaryIndexItem));
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Array.Clear((Array) this.m_buffer, this.m_lastIndex * sizeof (SecondaryIndexItem), sizeof (SecondaryIndexItem));
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}
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else
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Array.Clear((Array) this.m_buffer, num2, sizeof (SecondaryIndexItem));
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--this.m_lastIndex;
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--num1;
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}
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else
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num2 += sizeof (SecondaryIndexItem);
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}
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while (num2 / sizeof (SecondaryIndexItem) < num1);
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}
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}
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private unsafe void ShiftAndInsertValues(int id, byte[] indexValue)
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{
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InfoCardTrace.Assert(id > 0, "Invalid LocalId");
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InfoCardTrace.Assert(null != indexValue, "Null indev value passed");
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InfoCardTrace.Assert(indexValue.Length == 60, "Index buffer is not correct size.");
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SecondaryIndexItem secondaryIndexItem;
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secondaryIndexItem.LocalId = id;
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Marshal.Copy(indexValue, 0, (IntPtr) (void*) &secondaryIndexItem.HashValue, 60);
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this.AddItem(&secondaryIndexItem);
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}
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private static bool IsBufferEmpty(byte[] hash)
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{
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for (int index = 0; index < hash.Length; ++index)
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{
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if (hash[index] != (byte) 0)
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return false;
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}
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return true;
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}
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private unsafe int BSearch(
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SecondaryIndexItem* pMatch,
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IComparer<IntPtr> comp,
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int lowStart,
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int highStart)
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{
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int num1 = lowStart;
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int num2 = highStart;
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fixed (byte* numPtr = &this.m_buffer[0])
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{
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while (num1 <= num2)
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{
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int num3 = (num2 + num1) / 2;
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int num4 = comp.Compare((IntPtr) (void*) pMatch, (IntPtr) (void*) ((SecondaryIndexItem*) numPtr + num3));
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if (num4 == 0)
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{
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num2 = num3;
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if (num2 == num1)
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return num2;
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}
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else if (num4 < 0)
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num2 = num3 - 1;
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else
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num1 = num3 + 1;
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}
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}
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return ~num1;
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}
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private unsafe int Match(
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SecondaryIndexItem* pMatch,
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LocalIdCollection results,
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int lowStart,
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int highStart)
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{
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int index = this.BSearch(pMatch, this.m_searchComparer, lowStart, highStart);
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if (index >= 0)
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{
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fixed (byte* numPtr = &this.m_buffer[0])
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{
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InfoCardTrace.Assert(index * sizeof (SecondaryIndexItem) < this.m_buffer.Length, "Index has moved beyond the allocated buffer.");
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do
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{
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results.Add(((SecondaryIndexItem*) numPtr)[index].LocalId);
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++index;
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}
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while (index <= this.m_lastIndex && this.m_searchComparer.Compare((IntPtr) (void*) ((SecondaryIndexItem*) numPtr + index), (IntPtr) (void*) pMatch) == 0);
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}
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--index;
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}
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return index;
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}
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private unsafe void AddItem(SecondaryIndexItem* pMatch)
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{
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InfoCardTrace.Assert(IntPtr.Zero != (IntPtr) pMatch, "Match pointer is null");
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InfoCardTrace.Assert(pMatch->LocalId > 0, "Match pointer has invalid local id");
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int num1;
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if (SecondaryIndexSettings.Unique == (this.m_definition.Settings & SecondaryIndexSettings.Unique))
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{
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num1 = this.BSearch(pMatch, this.m_searchComparer, 0, this.m_lastIndex);
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if (num1 >= 0)
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throw InfoCardTrace.ThrowHelperError((Exception) new InvalidOperationException(SR.GetString("StoreUniqueIndexConstraintBroken", (object) this.m_definition.Name)));
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}
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else
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num1 = this.BSearch(pMatch, this.m_sortComparer, 0, this.m_lastIndex);
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if (num1 >= 0)
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return;
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int index = ~num1;
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int num2 = this.m_lastIndex + 1;
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int num3 = this.m_buffer.Length / sizeof (SecondaryIndexItem);
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if (num2 + 1 >= num3)
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this.GrowIndex();
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if (index < num2)
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{
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int num4 = num2 * sizeof (SecondaryIndexItem);
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int sourceIndex = index * sizeof (SecondaryIndexItem);
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int destinationIndex = sourceIndex + sizeof (SecondaryIndexItem);
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int length = num4 - sourceIndex;
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InfoCardTrace.Assert(length > 0, "No Bytes to copy into index.");
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Array.Copy((Array) this.m_buffer, sourceIndex, (Array) this.m_buffer, destinationIndex, length);
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}
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fixed (byte* numPtr = &this.m_buffer[0])
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{
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InfoCardTrace.Assert((SecondaryIndexItem*) numPtr + index - (SecondaryIndexItem*) numPtr < (long) this.m_buffer.Length, "IndexPointer is beyond the end of the allocated buffer");
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((SecondaryIndexItem*) numPtr)[index] = *pMatch;
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}
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++this.m_lastIndex;
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}
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private void GrowIndex()
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{
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int increaseByPercent = Utility.CalculateIncreaseByPercent(this.m_buffer.Length, sizeof (SecondaryIndexItem), 5);
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InfoCardTrace.Assert(increaseByPercent > this.m_buffer.Length && 0 == increaseByPercent % sizeof (SecondaryIndexItem), "New size calculated for index is invalid.");
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int length = (this.m_lastIndex + 1) * sizeof (SecondaryIndexItem);
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byte[] destinationArray = new byte[increaseByPercent];
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Array.Copy((Array) this.m_buffer, 0, (Array) destinationArray, 0, length);
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Array.Clear((Array) this.m_buffer, 0, length);
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this.m_buffer = destinationArray;
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}
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private void ThrowIfNotOpen()
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{
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if (!this.m_isOpen)
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throw InfoCardTrace.ThrowHelperError((Exception) new ObjectDisposedException(nameof (SecondaryIndex)));
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}
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}
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}
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