68 lines
1.8 KiB
C++
68 lines
1.8 KiB
C++
/*
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U2FDevice - A program to allow Raspberry Pi Zeros to act as U2F tokens
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Copyright (C) 2018 Michael Kuc
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "LED.hpp"
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#include "Architecture.hpp"
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#include <fstream>
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#include <stdexcept>
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#include <string>
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using namespace std;
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bool& ledState() {
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static bool state = true;
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return state;
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}
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bool getLEDState() {
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return ledState();
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}
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void disableACTTrigger([[maybe_unused]] bool nowDisabled) {
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#ifdef LEDS
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ofstream trigFile{ "/sys/class/leds/led0/trigger", ofstream::out | ofstream::trunc };
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if (!trigFile)
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throw runtime_error{ "Failed to retrieve led0 trigger file" };
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if (!static_cast<bool>(trigFile << (nowDisabled ? "none" : "mmc0")))
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throw runtime_error{ "Failed to write led0 trigger to file" };
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#endif
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}
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void enableACTLED([[maybe_unused]] bool nowOn) {
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#ifdef LEDS
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if (nowOn == getLEDState())
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return;
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ofstream enabledFile{ "/sys/class/leds/led0/brightness", ofstream::out | ofstream::trunc };
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if (!enabledFile)
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throw runtime_error{ "Failed to retrieve led0 brightness" };
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if (!static_cast<bool>(enabledFile << to_string(nowOn ? 0 : 1)))
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throw runtime_error{ "Failed to write led0 brightness to file" };
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ledState() = nowOn;
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#endif
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}
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void toggleACTLED() {
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enableACTLED(!getLEDState());
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}
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