/*
* Exceptions
* (C) 1999-2009 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/

#ifndef BOTAN_EXCEPTION_H__
#define BOTAN_EXCEPTION_H__

#include <botan/types.h>
#include <botan/parsing.h>
#include <exception>
#include <stdexcept>
#include <string>

namespace Botan {

typedef std::runtime_error Exception;
typedef std::invalid_argument Invalid_Argument;

/**
* Invalid_State Exception
*/
struct BOTAN_DLL Invalid_State : public Exception
   {
   Invalid_State(const std::string& err) :
      Exception(err)
      {}
   };

/**
* Lookup_Error Exception
*/
struct BOTAN_DLL Lookup_Error : public Exception
   {
   Lookup_Error(const std::string& err) :
      Exception(err)
      {}
   };

/**
* Internal_Error Exception
*/
struct BOTAN_DLL Internal_Error : public Exception
   {
   Internal_Error(const std::string& err) :
      Exception("Internal error: " + err)
      {}
   };

/**
* Invalid_Key_Length Exception
*/
struct BOTAN_DLL Invalid_Key_Length : public Invalid_Argument
   {
   Invalid_Key_Length(const std::string& name, size_t length) :
      Invalid_Argument(name + " cannot accept a key of length " +
                       std::to_string(length))
      {}
   };

/**
* Invalid_IV_Length Exception
*/
struct BOTAN_DLL Invalid_IV_Length : public Invalid_Argument
   {
   Invalid_IV_Length(const std::string& mode, size_t bad_len) :
      Invalid_Argument("IV length " + std::to_string(bad_len) +
                       " is invalid for " + mode)
      {}
   };

/**
* PRNG_Unseeded Exception
*/
struct BOTAN_DLL PRNG_Unseeded : public Invalid_State
   {
   PRNG_Unseeded(const std::string& algo) :
      Invalid_State("PRNG not seeded: " + algo)
      {}
   };

/**
* Policy_Violation Exception
*/
struct BOTAN_DLL Policy_Violation : public Invalid_State
   {
   Policy_Violation(const std::string& err) :
      Invalid_State("Policy violation: " + err)
      {}
   };

/**
* Algorithm_Not_Found Exception
*/
struct BOTAN_DLL Algorithm_Not_Found : public Lookup_Error
   {
   Algorithm_Not_Found(const std::string& name) :
      Lookup_Error("Could not find any algorithm named \"" + name + "\"")
      {}
   };

/**
* Invalid_Algorithm_Name Exception
*/
struct BOTAN_DLL Invalid_Algorithm_Name : public Invalid_Argument
   {
   Invalid_Algorithm_Name(const std::string& name):
      Invalid_Argument("Invalid algorithm name: " + name)
      {}
   };

/**
* Encoding_Error Exception
*/
struct BOTAN_DLL Encoding_Error : public Invalid_Argument
   {
   Encoding_Error(const std::string& name) :
      Invalid_Argument("Encoding error: " + name) {}
   };

/**
* Decoding_Error Exception
*/
struct BOTAN_DLL Decoding_Error : public Invalid_Argument
   {
   Decoding_Error(const std::string& name) :
      Invalid_Argument("Decoding error: " + name) {}
   };

/**
* Integrity_Failure Exception
*/
struct BOTAN_DLL Integrity_Failure : public Exception
   {
   Integrity_Failure(const std::string& msg) :
      Exception("Integrity failure: " + msg) {}
   };

/**
* Invalid_OID Exception
*/
struct BOTAN_DLL Invalid_OID : public Decoding_Error
   {
   Invalid_OID(const std::string& oid) :
      Decoding_Error("Invalid ASN.1 OID: " + oid) {}
   };

/**
* Stream_IO_Error Exception
*/
struct BOTAN_DLL Stream_IO_Error : public Exception
   {
   Stream_IO_Error(const std::string& err) :
      Exception("I/O error: " + err)
      {}
   };

/**
* No_Filesystem_Access Exception
*/
struct BOTAN_DLL No_Filesystem_Access : public Exception
   {
   No_Filesystem_Access() : Exception("No filesystem access enabled.") {}
   };

/**
* Self Test Failure Exception
*/
struct BOTAN_DLL Self_Test_Failure : public Internal_Error
   {
   Self_Test_Failure(const std::string& err) :
      Internal_Error("Self test failed: " + err)
      {}
   };

/**
* Memory Allocation Exception
*/
struct BOTAN_DLL Memory_Exhaustion : public std::bad_alloc
   {
   const char* what() const BOTAN_NOEXCEPT
      { return "Ran out of memory, allocation failed"; }
   };

}

#endif