FileChecker.h

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#ifndef ZYPP_FILECHECKER_H
#define ZYPP_FILECHECKER_H

#include <iosfwd>
#include <list>
#include "zypp/base/DefaultIntegral.h"
#include "zypp/base/Exception.h"
#include "zypp/base/Function.h"
#include "zypp/PathInfo.h"
#include "zypp/CheckSum.h"
#include "zypp/KeyContext.h"

namespace zypp
{ 

  class PublicKey;

  typedef function<void ( const Pathname &file )> FileChecker;

  class FileCheckException : public Exception
  {
  public:
    FileCheckException(const std::string &msg)
      : Exception(msg)
    {}
  };

  class CheckSumCheckException : public FileCheckException
  {
  public:
    CheckSumCheckException(const std::string &msg)
      : FileCheckException(msg)
    {}
  };

  class SignatureCheckException : public FileCheckException
  {
  public:
    SignatureCheckException(const std::string &msg)
      : FileCheckException(msg)
    {}
  };

   class ChecksumFileChecker
   {
   public:
     typedef CheckSumCheckException ExceptionType;
     ChecksumFileChecker( const CheckSum &checksum );
     void operator()( const Pathname &file ) const;
   private:
     CheckSum _checksum;
   };

   class SignatureFileChecker
   {
     public:
       typedef SignatureCheckException ExceptionType;
       typedef function<void ( const SignatureFileChecker & checker,  const Pathname & file )> OnSigValidated;

     public:
      SignatureFileChecker( const Pathname &signature );

      SignatureFileChecker();

      void setKeyContext(const KeyContext & keycontext);

      const KeyContext & keyContext() const
      { return _context; }

      bool fileAccepted() const
      { return _fileAccepted; }

      bool fileValidated() const
      { return _fileValidated; }

      void addPublicKey( const PublicKey & publickey, const KeyContext & keycontext = KeyContext());
      void addPublicKey( const Pathname & publickey, const KeyContext & keycontext = KeyContext());

      void operator()( const Pathname &file ) const;

     protected:
      Pathname _signature;
      KeyContext _context;
      mutable DefaultIntegral<bool,false> _fileAccepted;
      mutable DefaultIntegral<bool,false> _fileValidated;
   };

   class NullFileChecker
   {
   public:
     void operator()( const Pathname &file )  const;
   };

   class CompositeFileChecker
   {
   public:
     void add( const FileChecker &checker );
     void operator()( const Pathname &file ) const;

     int checkersSize() const { return _checkers.size(); }
   private:
     std::list<FileChecker> _checkers;
   };

  std::ostream & operator<<( std::ostream & str, const FileChecker & obj );

} // namespace zypp
#endif // ZYPP_FILECHECKER_H