Coverage Report

Created: 2021-02-21 07:20

/src/botan/build/include/botan/internal/proc_walk.h
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/*
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* File Tree Walking EntropySource
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* (C) 1999-2008 Jack Lloyd
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*
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* Botan is released under the Simplified BSD License (see license.txt)
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*/
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#ifndef BOTAN_ENTROPY_SRC_PROC_WALK_H_
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#define BOTAN_ENTROPY_SRC_PROC_WALK_H_
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#include <botan/entropy_src.h>
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#include <botan/mutex.h>
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namespace Botan {
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class File_Descriptor_Source
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   {
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   public:
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      virtual int next_fd() = 0;
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      virtual ~File_Descriptor_Source() = default;
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   };
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/**
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* File Tree Walking Entropy Source
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*/
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class ProcWalking_EntropySource final : public Entropy_Source
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   {
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   public:
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      std::string name() const override { return "proc_walk"; }
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      size_t poll(RandomNumberGenerator& rng) override;
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      explicit ProcWalking_EntropySource(const std::string& root_dir) :
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         m_path(root_dir), m_dir(nullptr) {}
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   private:
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      const std::string m_path;
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      mutex_type m_mutex;
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      std::unique_ptr<File_Descriptor_Source> m_dir;
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      secure_vector<uint8_t> m_buf;
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   };
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}
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#endif