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/*
* X.509 Cert Path Validation
* (C) 2010-2011 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/

#ifndef BOTAN_X509_CERT_PATH_VALIDATION_H__
#define BOTAN_X509_CERT_PATH_VALIDATION_H__

#include <botan/x509cert.h>
#include <botan/certstor.h>
<<<<<<< variant A
#include <set>
>>>>>>> variant B
#include <functional>
####### Ancestor
======= end

namespace Botan {

class BOTAN_DLL Path_Validation_Restrictions
   {
   public:
   Path_Validation_Restrictions(bool require_rev = false);

   Path_Validation_Restrictions(bool require_rev,
                                const std::set<std::string>& trusted_hashes) :
      m_require_revocation_information(require_rev),
      m_trusted_hashes(trusted_hashes) {}

      bool require_revocation_information() const
         { return m_require_revocation_information; }

      const std::set<std::string>& trusted_hashes() const
         { return m_trusted_hashes; }
   private:
      bool m_require_revocation_information;
      std::set<std::string> m_trusted_hashes;
   };

class BOTAN_DLL Path_Validation_Result
   {
   public:
      /**
      * X.509 Certificate Validation Result
      */
      enum Code {
         VERIFIED,
         UNKNOWN_X509_ERROR,
         CANNOT_ESTABLISH_TRUST,
         CERT_CHAIN_TOO_LONG,
         SIGNATURE_ERROR,
         POLICY_ERROR,
         INVALID_USAGE,
         UNTRUSTED_HASH,

         CERT_MULTIPLE_ISSUERS_FOUND,

         CERT_FORMAT_ERROR,
         CERT_ISSUER_NOT_FOUND,
         CERT_NOT_YET_VALID,
         CERT_HAS_EXPIRED,
         CERT_IS_REVOKED,

         CRL_NOT_FOUND,
         CRL_FORMAT_ERROR,
         CRL_NOT_YET_VALID,
         CRL_HAS_EXPIRED,

         CA_CERT_CANNOT_SIGN,
         CA_CERT_NOT_FOR_CERT_ISSUER,
         CA_CERT_NOT_FOR_CRL_ISSUER
      };

      /**
      * Returns the set of hash functions you are implicitly
      * trusting by trusting this result.
      */
      std::set<std::string> trusted_hashes() const;

      const X509_Certificate& trust_root() const;

      const std::vector<X509_Certificate>& cert_path() const { return m_cert_path; }

      bool successful_validation() const { return result() == VERIFIED; }

      Code result() const { return m_result; }

      std::string result_string() const;

   private:
      Path_Validation_Result() : m_result(UNKNOWN_X509_ERROR) {}

      friend Path_Validation_Result x509_path_validate(
         const std::vector<X509_Certificate>& end_certs,
         const Path_Validation_Restrictions& restrictions,
         const std::vector<Certificate_Store*>& certstores);

      void set_result(Code result) { m_result = result; }

      Code m_result;

      std::vector<X509_Certificate> m_cert_path;
   };

Path_Validation_Result BOTAN_DLL x509_path_validate(
   const std::vector<X509_Certificate>& end_certs,
   const Path_Validation_Restrictions& restrictions,
   const std::vector<Certificate_Store*>& certstores);

Path_Validation_Result BOTAN_DLL x509_path_validate(
   const X509_Certificate& end_cert,
   const Path_Validation_Restrictions& restrictions,
   const std::vector<Certificate_Store*>& certstores);

Path_Validation_Result BOTAN_DLL x509_path_validate(
   const X509_Certificate& end_cert,
   const Path_Validation_Restrictions& restrictions,
   Certificate_Store& store);

Path_Validation_Result BOTAN_DLL x509_path_validate(
   const std::vector<X509_Certificate>& end_certs,
   const Path_Validation_Restrictions& restrictions,
   Certificate_Store& store);

}

#endif