Move Windows Sandbox, trybots version (don't commit me!)

sandbox/src/resolver.h

-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Defines ResolverThunk, the interface for classes that perform interceptions.
-// For more details see
-// http://dev.chromium.org/developers/design-documents/sandbox .
-
-#include "base/basictypes.h"
-#include "sandbox/src/nt_internals.h"
-
-#ifndef SANDBOX_SRC_RESOLVER_H__
-#define SANDBOX_SRC_RESOLVER_H__
-
-namespace sandbox {
-
-// A resolver is the object in charge of performing the actual interception of
-// a function. There should be a concrete implementation of a resolver roughly
-// per type of interception.
-class ResolverThunk {
- public:
-  ResolverThunk() {}
-  virtual ~ResolverThunk() {}
-
-  // Performs the actual interception of a function.
-  // target_name is an exported function from the module loaded at
-  // target_module, and must be replaced by interceptor_name, exported from
-  // interceptor_module. interceptor_entry_point can be provided instead of
-  // interceptor_name / interceptor_module.
-  // thunk_storage must point to a buffer on the child's address space, to hold
-  // the patch thunk, and related data. If provided, storage_used will receive
-  // the number of bytes used from thunk_storage.
-  //
-  // Example: (without error checking)
-  //
-  // size_t size = resolver.GetThunkSize();
-  // char* buffer = ::VirtualAllocEx(child_process, NULL, size,
-  //                                 MEM_COMMIT, PAGE_READWRITE);
-  // resolver.Setup(ntdll_module, NULL, L"NtCreateFile", NULL,
-  //                &MyReplacementFunction, buffer, size, NULL);
-  //
-  // In general, the idea is to allocate a single big buffer for all
-  // interceptions on the same dll, and call Setup n times.
-  // WARNING: This means that any data member that is specific to a single
-  // interception must be reset within this method.
-  virtual NTSTATUS Setup(const void* target_module,
-                         const void* interceptor_module,
-                         const char* target_name,
-                         const char* interceptor_name,
-                         const void* interceptor_entry_point,
-                         void* thunk_storage,
-                         size_t storage_bytes,
-                         size_t* storage_used) = 0;
-
-  // Gets the address of function_name inside module (main exe).
-  virtual NTSTATUS ResolveInterceptor(const void* module,
-                                      const char* function_name,
-                                      const void** address);
-
-  // Gets the address of an exported function_name inside module.
-  virtual NTSTATUS ResolveTarget(const void* module,
-                                 const char* function_name,
-                                 void** address);
-
-  // Gets the required buffer size for this type of thunk.
-  virtual size_t GetThunkSize() const = 0;
-
- protected:
-  // Performs basic initialization on behalf of a concrete instance of a
-  // resolver. That is, parameter validation and resolution of the target
-  // and the interceptor into the member variables.
-  //
-  // target_name is an exported function from the module loaded at
-  // target_module, and must be replaced by interceptor_name, exported from
-  // interceptor_module. interceptor_entry_point can be provided instead of
-  // interceptor_name / interceptor_module.
-  // thunk_storage must point to a buffer on the child's address space, to hold
-  // the patch thunk, and related data.
-  virtual NTSTATUS Init(const void* target_module,
-                        const void* interceptor_module,
-                        const char* target_name,
-                        const char* interceptor_name,
-                        const void* interceptor_entry_point,
-                        void* thunk_storage,
-                        size_t storage_bytes);
-
-  // Gets the required buffer size for the internal part of the thunk.
-  size_t GetInternalThunkSize() const;
-
-  // Initializes the internal part of the thunk.
-  // interceptor is the function to be called instead of original_function.
-  bool SetInternalThunk(void* storage, size_t storage_bytes,
-                        const void* original_function, const void* interceptor);
-
-  // Holds the resolved interception target.
-  void* target_;
-  // Holds the resolved interception interceptor.
-  const void* interceptor_;
-
-  DISALLOW_COPY_AND_ASSIGN(ResolverThunk);
-};
-
-}  // namespace sandbox
-
-#endif  // SANDBOX_SRC_RESOLVER_H__