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+/*
+ * Copyright (c) 2015-2018 Nitrokey UG
+ *
+ * This file is part of libnitrokey.
+ *
+ * libnitrokey is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * libnitrokey is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libnitrokey. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * SPDX-License-Identifier: LGPL-3.0
+ */
+
+
+#ifndef MISC_H
+#define MISC_H
+#include <stdio.h>
+#include <string>
+#include <vector>
+#include <string.h>
+#include "log.h"
+#include "LibraryException.h"
+#include <sstream>
+#include <stdexcept>
+#include <iomanip>
+
+
+namespace nitrokey {
+namespace misc {
+
+/**
+ * Simple replacement for std::optional (C++17).
+ */
+template<typename T>
+class Option {
+public:
+ Option() : m_hasValue(false), m_value() {}
+ Option(T value) : m_hasValue(true), m_value(value) {}
+
+ bool has_value() const {
+ return m_hasValue;
+ }
+ T value() const {
+ if (!m_hasValue) {
+ throw std::logic_error("Called Option::value without value");
+ }
+ return m_value;
+ }
+
+private:
+ bool m_hasValue;
+ T m_value;
+};
+
+ template<typename T>
+ std::string toHex(T value){
+ using namespace std;
+ std::ostringstream oss;
+ oss << std::hex << std::setw(sizeof(value)*2) << std::setfill('0') << value;
+ return oss.str();
+ }
+
+#define FIELD_WIDTH_MAX (100)
+ /**
+ * Copies string from pointer to fixed size C-style array. Src needs to be a valid C-string - eg. ended with '\0'.
+ * Throws when source is bigger than destination.
+ * @tparam T type of destination array
+ * @param dest fixed size destination array
+ * @param src pointer to source c-style valid string
+ */
+ template <typename T>
+ void strcpyT(T& dest, const char* src){
+
+ if (src == nullptr)
+// throw EmptySourceStringException(slot_number);
+ return;
+ const size_t s_dest = sizeof dest;
+ const size_t src_strlen = strnlen(src, FIELD_WIDTH_MAX);
+ LOG(std::string("strcpyT sizes dest src ")
+ + std::to_string(s_dest) + " "
+ + std::to_string(src_strlen) + " "
+ , nitrokey::log::Loglevel::DEBUG_L2);
+ if (src_strlen > s_dest){
+ throw TooLongStringException(src_strlen, s_dest, src);
+ }
+ strncpy((char*) &dest, src, s_dest);
+ }
+
+#define bzero(b,len) (memset((b), '\0', (len)), (void) 0)
+ template <typename T>
+typename T::CommandPayload get_payload(){
+ //Create, initialize and return by value command payload
+ typename T::CommandPayload st;
+ bzero(&st, sizeof(st));
+ return st;
+}
+
+ template<typename CMDTYPE, typename Tdev>
+ void execute_password_command(Tdev &stick, const char *password) {
+ auto p = get_payload<CMDTYPE>();
+ p.set_defaults();
+ strcpyT(p.password, password);
+ CMDTYPE::CommandTransaction::run(stick, p);
+ }
+
+ std::string hexdump(const uint8_t *p, size_t size, bool print_header=true, bool print_ascii=true,
+ bool print_empty=true);
+ uint32_t stm_crc32(const uint8_t *data, size_t size);
+ std::vector<uint8_t> hex_string_to_byte(const char* hexString);
+}
+}
+
+#endif