1    :  // Copyright 2013 Google Inc. All Rights Reserved.
   2    :  //
   3    :  // Licensed under the Apache License, Version 2.0 (the "License");
   4    :  // you may not use this file except in compliance with the License.
   5    :  // You may obtain a copy of the License at
   6    :  //
   7    :  //     http://www.apache.org/licenses/LICENSE-2.0
   8    :  //
   9    :  // Unless required by applicable law or agreed to in writing, software
  10    :  // distributed under the License is distributed on an "AS IS" BASIS,
  11    :  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12    :  // See the License for the specific language governing permissions and
  13    :  // limitations under the License.
  14    :  //
  15    :  // Declares the Asan instrumenter.
  16    :  #ifndef SYZYGY_INSTRUMENT_INSTRUMENTERS_ASAN_INSTRUMENTER_H_
  17    :  #define SYZYGY_INSTRUMENT_INSTRUMENTERS_ASAN_INSTRUMENTER_H_
  18    :  
  19    :  #include <string>
  20    :  
  21    :  #include "base/command_line.h"
  22    :  #include "syzygy/common/asan_parameters.h"
  23    :  #include "syzygy/instrument/instrumenters/instrumenter_with_agent.h"
  24    :  #include "syzygy/instrument/transforms/allocation_filter_transform.h"
  25    :  #include "syzygy/instrument/transforms/asan_transform.h"
  26    :  #include "syzygy/pe/image_filter.h"
  27    :  #include "syzygy/pe/pe_relinker.h"
  28    :  
  29    :  namespace instrument {
  30    :  namespace instrumenters {
  31    :  
  32    :  class AsanInstrumenter : public InstrumenterWithAgent {
  33    :   public:
  34    :    typedef InstrumenterWithAgent Super;
  35    :  
  36    :    AsanInstrumenter();
  37  E :    ~AsanInstrumenter() { }
  38    :  
  39    :   protected:
  40    :    // @name InstrumenterWithAgent overrides.
  41    :    // @{
  42    :    bool ImageFormatIsSupported(ImageFormat image_format) override;
  43    :    bool InstrumentPrepare() override;
  44    :    bool InstrumentImpl() override;
  45  i :    const char* InstrumentationMode() override { return "asan"; }
  46    :    // @}
  47    :  
  48    :    // @name Super overrides.
  49    :    // @{
  50    :    bool DoCommandLineParse(const base::CommandLine* command_line) override;
  51    :    // @}
  52    :  
  53    :    // @name Command-line parameters.
  54    :    // @{
  55    :    base::FilePath filter_path_;
  56    :    bool use_interceptors_;
  57    :    bool remove_redundant_checks_;
  58    :    bool use_liveness_analysis_;
  59    :    double instrumentation_rate_;
  60    :    bool asan_rtl_options_;
  61    :    bool hot_patching_;
  62    :    // @}
  63    :  
  64    :    // Valid if asan_rtl_options_ is true.
  65    :    common::InflatedAsanParameters asan_params_;
  66    :  
  67    :    // The transform for this agent.
  68    :    scoped_ptr<instrument::transforms::AsanTransform> asan_transform_;
  69    :  
  70    :    // The image filter (optional).
  71    :    scoped_ptr<pe::ImageFilter> filter_;
  72    :  
  73    :    // Path to the JSON configuration file for the AllocationFilter transform.
  74    :    // The AllocationFilter tranform is only applied if this config file is
  75    :    // specified.
  76    :    base::FilePath allocation_filter_config_file_path_;
  77    :  
  78    :    // The AllocationFilter transform.
  79    :    // TODO(sebmarchand): Write some integration tests for this.
  80    :    scoped_ptr<instrument::transforms::AllocationFilterTransform> af_transform_;
  81    :  };
  82    :  
  83    :  }  // namespace instrumenters
  84    :  }  // namespace instrument
  85    :  
  86    :  #endif  // SYZYGY_INSTRUMENT_INSTRUMENTERS_ASAN_INSTRUMENTER_H_