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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
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