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/*****************************************************************************
* Copyright 2005 Alt-N Technologies, Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* This code incorporates intellectual property owned by Yahoo! and licensed
* pursuant to the Yahoo! DomainKeys Patent License Agreement.
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Changes done by ¢feh@fehcom.de obeying the above license
*
*****************************************************************************/
#ifndef DKIMSIGN_H
#define DKIMSIGN_H
#include "dkimbase.h"
class CDKIMSign : public CDKIMBase
{
public:
CDKIMSign();
~CDKIMSign();
//int Init() = delete;
int Init(DKIMSignOptions* pOptions);
int GetSig2(char* szRSAPrivKey,char* szECCPrivKey,char** pszSignature);
virtual int ProcessHeaders(void) override;
virtual int ProcessBody(char* szBuffer,int nBufLength,bool bEOF) override;
enum CKDKIMConstants { OptimalHeaderLineLength = 65 };
void Hash(const char* szBuffer,int nBufLength,bool bHdr);
protected:
bool SignThisTag(const string& sTag);
void GetHeaderParams(const string& sHdr);
void ProcessHeader(const string& sHdr);
bool ParseFromAddress(void);
void InitSig(void);
void AddTagToSig(const char* const Tag,const string &sValue,char cbrk,bool bFold);
void AddTagToSig(const char* const Tag,unsigned long nValue);
void AddInterTagSpace(int nSizeOfNextTag);
void AddFoldedValueToSig(const string &sValue,char cbrk);
bool IsRequiredHeader(const string& sTag);
int ConstructSignature(char* szSignKey,int nSigAlg);
int AssembleReturnedSig(char* szRSAPrivKey,char* szECCPrivKey);
#if ((OPENSSL_VERSION_NUMBER < 0x10100000L) || (LIBRESSL_VERSION_NUMBER > 0 && LIBRESSL_VERSION_NUMBER < 0x20700000L))
EVP_MD_CTX m_Hdr_sha1ctx; /* the RSA SHA1 signature */
EVP_MD_CTX m_Hdr_sha256ctx; /* the RSA SHA256 signature */
EVP_MD_CTX m_Bdy_sha1ctx; /* the SHA1 digest */
EVP_MD_CTX m_Bdy_sha256ctx; /* the SHA256 digest */
#else
EVP_MD_CTX *m_Hdr_sha1ctx; /* the RSA SHA1 signature */
EVP_MD_CTX *m_Hdr_sha256ctx; /* the RSA SHA256 signature */
EVP_MD_CTX *m_Hdr_ed25519ctx; /* the PureEd25519 signature */
EVP_MD_CTX *m_Bdy_sha1ctx; /* the SHA1 digest */
EVP_MD_CTX *m_Bdy_sha256ctx; /* the SHA256 digest for RSA */
EVP_MD_CTX *m_Edy_sha256ctx; /* the SHA256 digest for Ed25519 */
#endif
int m_Canon; /* canonization method */
int m_EmptyLineCount;
string hParam;
string sFrom;
string sSender;
string sSelector;
string eSelector; /* Used for Ed25519 signatures */
string sDomain;
string sIdentity; /* for i= tag, if empty tag will not be included in sig */
string sRequiredHeaders;
bool m_IncludeBodyLengthTag;
int m_nBodyLength;
time_t m_ExpireTime;
int m_nIncludeTimeStamp; // 0 = don't include t= tag, 1 = include t= tag
int m_nIncludeQueryMethod; // 0 = don't include q= tag, 1 = include q= tag
int m_nHash; // use one of the DKIM_HASH_xx constants here
int m_nIncludeCopiedHeaders; // 0 = don't include z= tag, 1 = include z= tag
DKIMHEADERCALLBACK m_pfnHdrCallback;
string m_sSig; // DKIM-Signature ....
int m_nSigPos;
string m_sReturnedSig;
bool m_bReturnedSigAssembled;
string m_sCopiedHeaders;
string SigHdrs;
int m_SigHdrs;
};
#endif // DKIMSIGN_H
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