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发表于 2017-8-11 17:29:22
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显示全部楼层
How To:
1.Add ModifyInMemory.cs to project
2.Activate MemoryPatching in entry method of application:
LicenseHelper.ModifyInMemory.ActivateMemoryPatching();
Notes:
- The "SetLicense"-method is invoked automatically for all assemblies !
- MemoryPatch bypasses 1024bit RSA protection
3.Compile project with option "Allow unsafe code"
(=> Project-Properties > Build: Check according option!)
Notes:
MemoryPatching is valid as long as the licensing does not change
(If I remember right in the last years nothing has changed)
ModifyInMemory.cs must be excluded from obfuscation
No support for Silverlight because SL's mscorlib.dll does not include all methods/properties required for MemoryPatching
=================
using System;
using System.Collections.Generic;
using System.IO;
using System.Reflection;
using System.Runtime.CompilerServices;
using System.Text;
using System.Xml;
namespace LicenseHelper
{
public static class ModifyInMemory
{
private static string AsposeList = "Aspose.3D.dll, Aspose.BarCode.dll, Aspose.BarCode.Compact.dll, Aspose.BarCode.WPF.dll, Aspose.Cells.GridDesktop.dll, Aspose.Cells.GridWeb.dll, Aspose.CAD.dll, Aspose.Cells.dll, Aspose.Diagram.dll, Aspose.Email.dll, Aspose.Imaging.dll, Aspose.Note.dll, Aspose.OCR.dll, Aspose.Pdf.dll, Aspose.Slides.dll, Aspose.Tasks.dll, Aspose.Words.dll";
public static void ActivateMemoryPatching()
{
Assembly[] arr = AppDomain.CurrentDomain.GetAssemblies();
foreach (Assembly assembly in arr)
{
if (AsposeList.IndexOf(assembly.FullName.Split(',')[0] + ".dll") != -1)
ActivateForAssembly(assembly);
}
AppDomain.CurrentDomain.AssemblyLoad += new AssemblyLoadEventHandler(ActivateOnLoad);
}
private static void ActivateOnLoad(object sender, AssemblyLoadEventArgs e)
{
if (AsposeList.IndexOf(e.LoadedAssembly.FullName.Split(',')[0] + ".dll") != -1)
ActivateForAssembly(e.LoadedAssembly);
}
private static void ActivateForAssembly(Assembly assembly)
{
MethodInfo miLicensed1 = typeof(ModifyInMemory).GetMethod("InvokeMe1", BindingFlags.NonPublic | BindingFlags.Static);
MethodInfo miLicensed2 = typeof(ModifyInMemory).GetMethod("InvokeMe2", BindingFlags.NonPublic | BindingFlags.Static);
MethodInfo miEvaluation = null;
Dictionary<string, MethodInfo> miDict = new Dictionary<string, MethodInfo>()
{
{"System.DateTime" , miLicensed1},
{"System.Xml.XmlElement", miLicensed2}
};
Type[] arrType = null;
bool isFound = false;
int nCount = 0;
try
{
arrType = assembly.GetTypes();
}
catch (ReflectionTypeLoadException err)
{
arrType = err.Types;
}
foreach (Type type in arrType)
{
if (isFound) break;
if (type == null) continue;
MethodInfo[] arrMInfo = type.GetMethods(BindingFlags.NonPublic | BindingFlags.Static);
foreach (MethodInfo info in arrMInfo)
{
if (isFound) break;
try
{
string strMethod = info.ToString();
if ((strMethod.IndexOf("(System.Xml.XmlElement, System.String)") > 0) && (miDict.ContainsKey(info.ReturnType.ToString())))
{
miEvaluation = info;
MemoryPatching(miEvaluation, miDict[miEvaluation.ReturnType.ToString()]);
nCount++;
if (((assembly.FullName.IndexOf("Aspose.Pdf") == -1) && (nCount == 2)) ||
((assembly.FullName.IndexOf("Aspose.Pdf") != -1) && (nCount == 6)))
{
isFound = true;
break;
}
}
}
catch
{
throw new InvalidOperationException("MemoryPatching for \"" + assembly.FullName + "\" failed !");
}
}
}
String[] aParts = assembly.FullName.Split(',');
string fName = aParts[0];
if (fName.IndexOf("Aspose.BarCode.") != -1)
fName = "Aspose.BarCode";
else if (fName.IndexOf("Aspose.3D") != -1)
fName = "Aspose.ThreeD";
try
{
Type type2 = assembly.GetType(fName + ".License");
MethodInfo mi = type2.GetMethod("SetLicense", new Type[] { typeof(Stream) });
string LData = "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";
Stream stream = new MemoryStream(Convert.FromBase64String(LData));
stream.Seek(0, SeekOrigin.Begin);
mi.Invoke(Activator.CreateInstance(type2, null), new Stream[] { stream });
}
catch
{
throw new InvalidOperationException("SetLicense for \"" + assembly.FullName + "\" failed !");
}
}
private static DateTime InvokeMe1(XmlElement element, string name)
{
return DateTime.MaxValue;
}
private static XmlElement InvokeMe2(XmlElement element, string name)
{
if (element.LocalName == "License")
{
string License64 = "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";
element.InnerXml = new UTF8Encoding().GetString(Convert.FromBase64String(License64));
}
if (element.LocalName == "BlackList")
{
string BlackList64 = "PERhdGE+PC9EYXRhPjxTaWduYXR1cmU+cUJwMEx1cEVoM1ZnOWJjeS8vbUVXUk9KRWZmczRlY25iTHQxYlNhanU2NjY5RHlad09FakJ1eEdBdVBxS1hyd0x5bmZ5VWplYUNGQ0QxSkh2RVUxVUl5eXJOTnBSMXc2NXJIOUFyUCtFbE1lVCtIQkZ4NFMzckFVMnd6dkxPZnhGeU9DQ0dGQ2UraTdiSHlGQk44WHp6R1UwdGRPMGR1RTFoRTQ5M1RNY3pRPTwvU2lnbmF0dXJlPg==";
element.InnerXml = new UTF8Encoding().GetString(Convert.FromBase64String(BlackList64));
}
XmlNodeList elementsByTagName = element.GetElementsByTagName(name);
if (elementsByTagName.Count <= 0)
{
return null;
}
return (XmlElement)elementsByTagName[0];
}
private static unsafe void MemoryPatching(MethodBase miEvaluation, MethodBase miLicensed)
{
IntPtr IntPtrEval = GetMemoryAddress(miEvaluation);
IntPtr IntPtrLicensed = GetMemoryAddress(miLicensed);
if (IntPtr.Size == 8)
*((long*)IntPtrEval.ToPointer()) = *((long*)IntPtrLicensed.ToPointer());
else
*((int*)IntPtrEval.ToPointer()) = *((int*)IntPtrLicensed.ToPointer());
}
private static unsafe IntPtr GetMemoryAddress(MethodBase mb)
{
RuntimeHelpers.PrepareMethod(mb.MethodHandle);
if ((Environment.Version.Major >= 4) || ((Environment.Version.Major == 2) && (Environment.Version.MinorRevision >= 3053)))
{
return new IntPtr(((int*)mb.MethodHandle.Value.ToPointer() + 2));
}
UInt64* location = (UInt64*)(mb.MethodHandle.Value.ToPointer());
int index = (int)(((*location) >> 32) & 0xFF);
if (IntPtr.Size == 8)
{
ulong* classStart = (ulong*)mb.DeclaringType.TypeHandle.Value.ToPointer();
ulong* address = classStart + index + 10;
return new IntPtr(address);
}
else
{
uint* classStart = (uint*)mb.DeclaringType.TypeHandle.Value.ToPointer();
uint* address = classStart + index + 10;
return new IntPtr(address);
}
}
}
}
//End
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