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#pragma once
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#include <list>
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#include <string>
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#include <chrono>
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#include <mutex>
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#include <functional>
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namespace pEp { |
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class PassphraseCache { |
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using clock = std::chrono::system_clock; |
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using time_point = std::chrono::time_point<clock>; |
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using duration = clock::duration; |
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struct cache_entry { |
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std::string passphrase; |
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time_point tp; |
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}; |
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std::list<cache_entry> _cache; |
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std::mutex _mtx; |
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duration _timeout; |
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public: |
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PassphraseCache() : _timeout(std::chrono::minutes(10)) { } |
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~PassphraseCache() { } |
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PassphraseCache(const PassphraseCache& second) : |
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_cache(second._cache), _timeout(second._timeout) { } |
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// adding a passphrase to the cache, which will timeout
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void add(std::string passphrase); |
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// for each passphrase call the callee until it returns true for a
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// matching passphrase or no passphrases are left
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// returns true if a passphrase was matching, false otherwise
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using passphrase_callee = std::function<bool(std::string)>; |
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bool for_each_passphrase(passphrase_callee& callee); |
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protected: |
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void cleanup(); |
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}; |
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}; |
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