46 lines
1.1 KiB
C++
46 lines
1.1 KiB
C++
#ifndef FORTUNA_URANDOM_ENTROPY_SRC_CPP
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#define FORTUNA_URANDOM_ENTROPY_SRC_CPP
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#include "urandom_entropy_src.h"
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#include <cstdint>
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namespace fortuna {
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namespace accumulator {
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std::vector<char> UrandomEntropySrc::bytes{};
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auto UrandomEntropySrc::schedule(accumulator::EventSchedulerImpl scheduler)
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-> void {
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scheduler.schedule(std::chrono::milliseconds(100));
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}
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auto UrandomEntropySrc::event(accumulator::EventAdderImpl adder) -> void {
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std::ifstream file;
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file.exceptions(std::ifstream::failbit | std::ifstream::badbit);
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try {
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std::ifstream urandom("/dev/urandom", std::ios::in | std::ios::binary);
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// check if stream is open
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if (urandom) {
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urandom.read(
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reinterpret_cast<char*>(&UrandomEntropySrc::bytes),
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static_cast<int64_t>(reinterpret_cast<uint64_t>(UrandomEntropySrc::bytes.size())));
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urandom.close();
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}
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else {
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// open failed
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fmt::print(stderr, "Failed to open /dev/urandom\n");
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}
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}
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catch (std::ifstream::failure& e) {
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fmt::print("io exception caugth: {}\n", e.what());
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}
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}
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} // namespace accumulator
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} // namespace fortuna
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#endif // FORTUNA_URANDOM_ENTROPY_SRC_CPP
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