CODEWITHSUNDEEP
c#.net-assemblyunsafemanaged
Evgeniy Berezovsky
Evgeniy Berezovsky

Reputation: 19248

How can I check if a .NET dll uses unsafe code?

Given a .NET assembly (DLL or EXE), how can I make sure it does (or does not) use unsafe code, with a command line tool?

Upvotes: 0

Views: 575

Answers (2)

Evgeniy Berezovsky
Evgeniy Berezovsky

Reputation: 19248

Use PEVerify.

Example output for an unsafe assembly:

> peverify /quiet myapp.exe
myapp.exe FAIL (2 error(s))

Example output for a safe assembly:

> peverify /quiet myapp.exe
myapp.exe PASS

This will not only detect code marked "unsafe", but also calls to native libraries.

N.B. peverify should come installed with Visual Studio, and is easiest to call when using the Visual Studio Developer Command Prompt.

Upvotes: 1

Jeremy Thompson
Jeremy Thompson

Reputation: 65672

I googled this code to help you get started:

public static IList<LocalVariableInfo> GetLocalVars(string asmPath, string typeName, string methodName) 
{
  Assembly asm = Assembly.LoadFrom(asmPath); 
  Type asmType = asm.GetType(typeName); 
  MethodInfo mi = asmType.GetMethod(methodName); 
  MethodBody mb = mi.getMethodBody(); 

  IList<LocalVariableInfo> vars = mb.LocalVariab1es; 
  // Display information about each local variable. 
  foreach (LocalVariableInfo Ivi in vars) 
  {
    Console.WriteLine("IsPinned: " + Ivi.IsPinned); 
    Console.WriteLine("Locallndex : " + Ivi.Loca1Index); 
    Console.WriteLine("LocalType.Modu1e: " + Ivi.LocalType.Module); 
  }
  return vars;
}

Upvotes: 1

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