AlgorithmIdentifier.cpp

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#include "AlgorithmIdentifier.h"
#include "OID.h"
#include "Buffer.h"
#include "ASN1Helper.h"

#include "PKIX1Implicit88.h"
#include "PKIX1Explicit88.h"


struct CPKIFAlgorithmIdentifierImpl
{
    CPKIFOIDPtr m_algorithm;

    CPKIFBufferPtr m_parametersBuf;

    ASN1OpenType*  m_parameters;
};


CPKIFAlgorithmIdentifier::CPKIFAlgorithmIdentifier()
: m_impl (new CPKIFAlgorithmIdentifierImpl)
{
    m_impl->m_parameters = NULL;
}

CPKIFAlgorithmIdentifier::CPKIFAlgorithmIdentifier(
    const CPKIFOIDPtr &oid,
    const CPKIFBufferPtr& params)
: m_impl (new CPKIFAlgorithmIdentifierImpl)
{
    CPKIFOIDPtr tmp(new CPKIFOID((std::string(oid->ToString()))));
    m_impl->m_algorithm = tmp;
    if(params)
    {
        m_impl->m_parameters = new ASN1OpenType;
        m_impl->m_parameters->data = new unsigned char[params->GetLength()];
        memcpy((void*)m_impl->m_parameters->data, params->GetBuffer(), params->GetLength());
        m_impl->m_parameters->numocts = params->GetLength();
    }
    else
        m_impl->m_parameters = NULL;
}

CPKIFAlgorithmIdentifier::CPKIFAlgorithmIdentifier(
    const CPKIFOIDPtr& oid) 
: m_impl (new CPKIFAlgorithmIdentifierImpl)
{
    m_impl->m_algorithm = oid; m_impl->m_parameters = NULL;
}
CPKIFAlgorithmIdentifier::CPKIFAlgorithmIdentifier(
    const CPKIFAlgorithmIdentifier& alg)
: m_impl (new CPKIFAlgorithmIdentifierImpl)
{
    CPKIFOIDPtr tmp(new CPKIFOID((std::string(alg.m_impl->m_algorithm->ToString()))));
    m_impl->m_algorithm = tmp;
    if( alg.m_impl->m_parameters )
    {
        m_impl->m_parameters = new ASN1OpenType;
        m_impl->m_parameters->data = new unsigned char[alg.m_impl->m_parameters->numocts];
        memcpy((void*)m_impl->m_parameters->data, alg.m_impl->m_parameters->data, alg.m_impl->m_parameters->numocts);
        m_impl->m_parameters->numocts = alg.m_impl->m_parameters->numocts;
    }
    else
        m_impl->m_parameters = NULL;
}

CPKIFAlgorithmIdentifier::~CPKIFAlgorithmIdentifier()
{
    if(m_impl)
    {
        if(NULL != m_impl->m_parameters)
        {
            if(NULL != m_impl->m_parameters->data)
            {
                delete[] m_impl->m_parameters->data; m_impl->m_parameters->data = NULL;
            }

            delete m_impl->m_parameters; m_impl->m_parameters = NULL;
        }

        delete m_impl;
        m_impl = 0;
    }
}

CPKIFOIDPtr CPKIFAlgorithmIdentifier::oid() const 
{
    return m_impl->m_algorithm;
}

bool CPKIFAlgorithmIdentifier::hasParameters() const 
{
    return NULL != m_impl->m_parameters;
}

bool CPKIFAlgorithmIdentifier::operator==(
    const CPKIFAlgorithmIdentifier& rhs) const 
{
    return *m_impl->m_algorithm == *rhs.m_impl->m_algorithm;
}

CPKIFBufferPtr CPKIFAlgorithmIdentifier::parameters() const
{
    if(hasParameters() && !m_impl->m_parametersBuf)
    {
        CPKIFBufferPtr tmp(new CPKIFBuffer(m_impl->m_parameters->data, m_impl->m_parameters->numocts));
        m_impl->m_parametersBuf = tmp;
        return m_impl->m_parametersBuf;
    }
    else if(hasParameters())
    {
        return m_impl->m_parametersBuf;
    }
    else
    {
        CPKIFBufferPtr tmp;
        m_impl->m_parametersBuf = tmp;
        return m_impl->m_parametersBuf;
    }
}