P7MFilter.h

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/*
* FinTP - Financial Transactions Processing Application
* Copyright (C) 2013 Business Information Systems (Allevo) S.R.L.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>
* or contact Allevo at : 031281 Bucuresti, 23C Calea Vitan, Romania,
* phone +40212554577, office@allevo.ro <mailto:office@allevo.ro>, www.allevo.ro.
*/

#ifndef _P7MFILTER_H_
#define _P7MFILTER_H_

#include "../AbstractFilter.h"
#include "../AppSettings.h"
#include <xercesc/util/PlatformUtils.hpp>
#include <xercesc/framework/StdOutFormatTarget.hpp>

#include <openssl/bio.h>
#include <openssl/x509.h>
#include <openssl/pkcs7.h>
#include <openssl/x509.h>
#include <openssl/pkcs12.h>

namespace FinTP
{
        class ExportedObject P7MFilter : public AbstractFilter
        {
                private:
                
                        PKCS7* m_P7;
                        PKCS7_SIGNER_INFO *m_SI;
                        BIO     *m_Data, *m_P7bio;
                        STACK_OF(PKCS7_SIGNER_INFO)     *m_sk;
                        EVP_PKEY* m_PKey;
                        X509* m_X509;
                        PKCS12* m_Pkcs12;               
                        
                public:
                
                        static const string P7MCERTFILENAME;
                        static const string P7MCERTPASSWD;
                        P7MFilter();
                        ~P7MFilter();   
                                
                        bool isMethodSupported( FilterMethod method, bool asClient );
                        
                        AbstractFilter::FilterResult ProcessMessage( AbstractFilter::buffer_type inputData, AbstractFilter::buffer_type outputData, NameValueCollection& transportHeaders, bool asClient );
                        AbstractFilter::FilterResult ProcessMessage( AbstractFilter::buffer_type inputData, XERCES_CPP_NAMESPACE_QUALIFIER DOMDocument* outputData, NameValueCollection& transportHeaders, bool asClient );
                        AbstractFilter::FilterResult ProcessMessage( const XERCES_CPP_NAMESPACE_QUALIFIER DOMDocument* inputData, AbstractFilter::buffer_type outputData, NameValueCollection& transportHeaders, bool asClient )
                        {
                                throw FilterInvalidMethod( AbstractFilter::XmlToBuffer );
                        }

                        AbstractFilter::FilterResult ProcessMessage( XERCES_CPP_NAMESPACE_QUALIFIER DOMDocument* inputOutputData, NameValueCollection& transportHeaders, bool asClient )
                        {
                                throw FilterInvalidMethod( AbstractFilter::XmlToXml );
                        }
                        
                        AbstractFilter::FilterResult ProcessMessage( const XERCES_CPP_NAMESPACE_QUALIFIER DOMDocument* inputData, unsigned char** outputData, NameValueCollection& transportHeaders, bool asClient )
                        {
                                throw FilterInvalidMethod( AbstractFilter::XmlToBuffer );
                        }

                        AbstractFilter::FilterResult ProcessMessage( AbstractFilter::buffer_type inputData, unsigned char** outputData, NameValueCollection& transportHeaders, bool asClient )
                        {
                                throw FilterInvalidMethod( AbstractFilter::BufferToBuffer );
                        }

                        static bool IsSigned( const string& signedString );

                private :
                
                        string m_CertFileName;
                        string m_CertPasswd;
                        
                        void ValidateProperties();
                        static string ReadDataFromBIO( BIO* bp );
                        //read pkcs7 structure from b64 format
                        static PKCS7* B64_read_PKCS7( BIO* bio );
                        //write pkcs7 structure to b64 format
                        static int B64_write_PKCS7(BIO *bio, PKCS7 *p7);
                        
                        static int Verify_Callback(int  ok,     X509_STORE_CTX *ctx );
        };
}
#endif // _P7MFILTER_H_