142 lines
3.9 KiB
C++
142 lines
3.9 KiB
C++
//***************************************************************************
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// apps/crypto/controlse/cstring.cxx
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//
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// Licensed to the Apache Software Foundation (ASF) under one or more
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// contributor license agreements. See the NOTICE file distributed with
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// this work for additional information regarding copyright ownership. The
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// ASF licenses this file to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance with the
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// License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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// License for the specific language governing permissions and limitations
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// under the License.
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//
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//**************************************************************************
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// Copyright 2024 NXP
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//***************************************************************************
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// Included Files
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//***************************************************************************
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#include "crypto/controlse/cstring.hxx"
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#include "crypto/controlse/csecure_element.hxx"
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#include <cstring>
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namespace Controlse
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{
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//***************************************************************************
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// Class Method Implementations
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//***************************************************************************
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CString::CString(const ISecureElement &se, uint32_t keystore_id)
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{
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(void)LoadFromSecureElement(se, keystore_id);
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}
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CString::CString(char *string, size_t size) : m_size(size)
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{
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m_string = new char[m_size];
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memcpy(m_string, string, m_size);
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}
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CString::CString(const CString &p1) : CString(p1.m_string, p1.m_size) {}
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CString::~CString()
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{
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if (m_string != nullptr)
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{
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delete[] m_string;
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m_size = 0;
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}
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}
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CString &CString::operator=(const CString &other)
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{
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if (this != &other)
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{
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auto new_string = new char[other.m_size];
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memcpy(new_string, other.m_string, other.m_size);
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delete[] m_string;
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m_string = new_string;
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m_size = other.m_size;
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}
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return *this;
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}
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bool CString::operator==(CString &a) const
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{
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if (a.m_size != m_size)
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{
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return false;
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}
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return 0 == (memcmp(a.m_string, m_string, m_size));
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}
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bool CString::operator!=(CString &a) const { return !operator==(a); }
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char *CString::c_str(void) const
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{
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char *c_str = nullptr;
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if (IsLoaded() && (m_size > 0))
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{
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bool add_termination_character = false;
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if (m_string[m_size - 1] != 0)
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{
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add_termination_character = true;
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}
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c_str = new char[m_size + (add_termination_character ? 1 : 0)];
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memcpy(c_str, m_string, m_size);
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if (add_termination_character)
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{
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c_str[m_size] = 0;
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}
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}
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return c_str;
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}
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bool CString::IsLoaded() const { return m_string != nullptr; }
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bool CString::StoreOnSecureElement(const ISecureElement &se,
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uint32_t keystore_id) const
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{
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auto result = false;
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if (IsLoaded())
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{
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struct se05x_key_transmission_s args
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= { .entry = { .id = keystore_id },
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.content = { .buffer = reinterpret_cast<uint8_t *>(m_string),
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.buffer_size = m_size } };
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result = se.SetData(args);
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}
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return result;
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}
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bool CString::LoadFromSecureElement(const ISecureElement &se,
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uint32_t keystore_id)
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{
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uint8_t buffer[1000];
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struct se05x_key_transmission_s args
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= { .entry = { .id = keystore_id },
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.content = { .buffer = buffer, .buffer_size = sizeof(buffer) } };
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auto result = se.GetData(args);
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if (result)
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{
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m_size = args.content.buffer_content_size;
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m_string = new char[m_size + 1];
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memcpy(m_string, buffer, m_size);
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m_string[m_size] = 0;
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}
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return result;
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}
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} // namespace Controlse
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