The Tor Browser: security/sandbox/win/src/resolver.cc@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 // Copyright (c) 2006-2010 The Chromium Authors. All rights reserved.

     2 // Use of this source code is governed by a BSD-style license that can be

     3 // found in the LICENSE file.

     5 #include "sandbox/win/src/resolver.h"

     7 #include "base/win/pe_image.h"

     8 #include "sandbox/win/src/sandbox_nt_util.h"

    10 namespace sandbox {

    12 NTSTATUS ResolverThunk::Init(const void* target_module,

    13                              const void* interceptor_module,

    14                              const char* target_name,

    15                              const char* interceptor_name,

    16                              const void* interceptor_entry_point,

    17                              void* thunk_storage,

    18                              size_t storage_bytes) {

    19   if (NULL == thunk_storage || 0 == storage_bytes ||

    20       NULL == target_module || NULL == target_name)

    21     return STATUS_INVALID_PARAMETER;

    23   if (storage_bytes < GetThunkSize())

    24     return STATUS_BUFFER_TOO_SMALL;

    26   NTSTATUS ret = STATUS_SUCCESS;

    27   if (NULL == interceptor_entry_point) {

    28     ret = ResolveInterceptor(interceptor_module, interceptor_name,

    29                              &interceptor_entry_point);

    30     if (!NT_SUCCESS(ret))

    31       return ret;

    32   }

    34   ret = ResolveTarget(target_module, target_name, &target_);

    35   if (!NT_SUCCESS(ret))

    36     return ret;

    38   interceptor_ = interceptor_entry_point;

    40   return ret;

    41 }

    43 NTSTATUS ResolverThunk::ResolveInterceptor(const void* interceptor_module,

    44                                            const char* interceptor_name,

    45                                            const void** address) {

    46   DCHECK_NT(address);

    47   if (!interceptor_module)

    48     return STATUS_INVALID_PARAMETER;

    50   base::win::PEImage pe(interceptor_module);

    51   if (!pe.VerifyMagic())

    52     return STATUS_INVALID_IMAGE_FORMAT;

    54   *address = pe.GetProcAddress(interceptor_name);

    56   if (!(*address))

    57     return STATUS_PROCEDURE_NOT_FOUND;

    59   return STATUS_SUCCESS;

    60 }

    62 }  // namespace sandbox

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