1 files changed, 398 insertions, 0 deletions

diff --git a/CryptoPP/algparam.h b/CryptoPP/algparam.h
new file mode 100644
index 000000000..ea5129c22
--- /dev/null
+++ b/CryptoPP/algparam.h
@@ -0,0 +1,398 @@
+#ifndef CRYPTOPP_ALGPARAM_H
+#define CRYPTOPP_ALGPARAM_H
+
+#include "cryptlib.h"
+#include "smartptr.h"
+#include "secblock.h"
+
+NAMESPACE_BEGIN(CryptoPP)
+
+//! used to pass byte array input as part of a NameValuePairs object
+/*! the deepCopy option is used when the NameValuePairs object can't
+	keep a copy of the data available */
+class ConstByteArrayParameter
+{
+public:
+	ConstByteArrayParameter(const char *data = NULL, bool deepCopy = false)
+	{
+		Assign((const byte *)data, data ? strlen(data) : 0, deepCopy);
+	}
+	ConstByteArrayParameter(const byte *data, size_t size, bool deepCopy = false)
+	{
+		Assign(data, size, deepCopy);
+	}
+	template <class T> ConstByteArrayParameter(const T &string, bool deepCopy = false)
+	{
+        CRYPTOPP_COMPILE_ASSERT(sizeof(CPP_TYPENAME T::value_type) == 1);
+		Assign((const byte *)string.data(), string.size(), deepCopy);
+	}
+
+	void Assign(const byte *data, size_t size, bool deepCopy)
+	{
+		if (deepCopy)
+			m_block.Assign(data, size);
+		else
+		{
+			m_data = data;
+			m_size = size;
+		}
+		m_deepCopy = deepCopy;
+	}
+
+	const byte *begin() const {return m_deepCopy ? m_block.begin() : m_data;}
+	const byte *end() const {return m_deepCopy ? m_block.end() : m_data + m_size;}
+	size_t size() const {return m_deepCopy ? m_block.size() : m_size;}
+
+private:
+	bool m_deepCopy;
+	const byte *m_data;
+	size_t m_size;
+	SecByteBlock m_block;
+};
+
+class ByteArrayParameter
+{
+public:
+	ByteArrayParameter(byte *data = NULL, unsigned int size = 0)
+		: m_data(data), m_size(size) {}
+	ByteArrayParameter(SecByteBlock &block)
+		: m_data(block.begin()), m_size(block.size()) {}
+
+	byte *begin() const {return m_data;}
+	byte *end() const {return m_data + m_size;}
+	size_t size() const {return m_size;}
+
+private:
+	byte *m_data;
+	size_t m_size;
+};
+
+class CRYPTOPP_DLL CombinedNameValuePairs : public NameValuePairs
+{
+public:
+	CombinedNameValuePairs(const NameValuePairs &pairs1, const NameValuePairs &pairs2)
+		: m_pairs1(pairs1), m_pairs2(pairs2) {}
+
+	bool GetVoidValue(const char *name, const std::type_info &valueType, void *pValue) const;
+
+private:
+	const NameValuePairs &m_pairs1, &m_pairs2;
+};
+
+template <class T, class BASE>
+class GetValueHelperClass
+{
+public:
+	GetValueHelperClass(const T *pObject, const char *name, const std::type_info &valueType, void *pValue, const NameValuePairs *searchFirst)
+		: m_pObject(pObject), m_name(name), m_valueType(&valueType), m_pValue(pValue), m_found(false), m_getValueNames(false)
+	{
+		if (strcmp(m_name, "ValueNames") == 0)
+		{
+			m_found = m_getValueNames = true;
+			NameValuePairs::ThrowIfTypeMismatch(m_name, typeid(std::string), *m_valueType);
+			if (searchFirst)
+				searchFirst->GetVoidValue(m_name, valueType, pValue);
+			if (typeid(T) != typeid(BASE))
+				pObject->BASE::GetVoidValue(m_name, valueType, pValue);
+			((*reinterpret_cast<std::string *>(m_pValue) += "ThisPointer:") += typeid(T).name()) += ';';
+		}
+
+		if (!m_found && strncmp(m_name, "ThisPointer:", 12) == 0 && strcmp(m_name+12, typeid(T).name()) == 0)
+		{
+			NameValuePairs::ThrowIfTypeMismatch(m_name, typeid(T *), *m_valueType);
+			*reinterpret_cast<const T **>(pValue) = pObject;
+			m_found = true;
+			return;
+		}
+
+		if (!m_found && searchFirst)
+			m_found = searchFirst->GetVoidValue(m_name, valueType, pValue);
+		
+		if (!m_found && typeid(T) != typeid(BASE))
+			m_found = pObject->BASE::GetVoidValue(m_name, valueType, pValue);
+	}
+
+	operator bool() const {return m_found;}
+
+	template <class R>
+	GetValueHelperClass<T,BASE> & operator()(const char *name, const R & (T::*pm)() const)
+	{
+		if (m_getValueNames)
+			(*reinterpret_cast<std::string *>(m_pValue) += name) += ";";
+		if (!m_found && strcmp(name, m_name) == 0)
+		{
+			NameValuePairs::ThrowIfTypeMismatch(name, typeid(R), *m_valueType);
+			*reinterpret_cast<R *>(m_pValue) = (m_pObject->*pm)();
+			m_found = true;
+		}
+		return *this;
+	}
+
+	GetValueHelperClass<T,BASE> &Assignable()
+	{
+#ifndef __INTEL_COMPILER	// ICL 9.1 workaround: Intel compiler copies the vTable pointer for some reason
+		if (m_getValueNames)
+			((*reinterpret_cast<std::string *>(m_pValue) += "ThisObject:") += typeid(T).name()) += ';';
+		if (!m_found && strncmp(m_name, "ThisObject:", 11) == 0 && strcmp(m_name+11, typeid(T).name()) == 0)
+		{
+			NameValuePairs::ThrowIfTypeMismatch(m_name, typeid(T), *m_valueType);
+			*reinterpret_cast<T *>(m_pValue) = *m_pObject;
+			m_found = true;
+		}
+#endif
+		return *this;
+	}
+
+private:
+	const T *m_pObject;
+	const char *m_name;
+	const std::type_info *m_valueType;
+	void *m_pValue;
+	bool m_found, m_getValueNames;
+};
+
+template <class BASE, class T>
+GetValueHelperClass<T, BASE> GetValueHelper(const T *pObject, const char *name, const std::type_info &valueType, void *pValue, const NameValuePairs *searchFirst=NULL, BASE *dummy=NULL)
+{
+	return GetValueHelperClass<T, BASE>(pObject, name, valueType, pValue, searchFirst);
+}
+
+template <class T>
+GetValueHelperClass<T, T> GetValueHelper(const T *pObject, const char *name, const std::type_info &valueType, void *pValue, const NameValuePairs *searchFirst=NULL)
+{
+	return GetValueHelperClass<T, T>(pObject, name, valueType, pValue, searchFirst);
+}
+
+// ********************************************************
+
+template <class R>
+R Hack_DefaultValueFromConstReferenceType(const R &)
+{
+	return R();
+}
+
+template <class R>
+bool Hack_GetValueIntoConstReference(const NameValuePairs &source, const char *name, const R &value)
+{
+	return source.GetValue(name, const_cast<R &>(value));
+}
+
+template <class T, class BASE>
+class AssignFromHelperClass
+{
+public:
+	AssignFromHelperClass(T *pObject, const NameValuePairs &source)
+		: m_pObject(pObject), m_source(source), m_done(false)
+	{
+		if (source.GetThisObject(*pObject))
+			m_done = true;
+		else if (typeid(BASE) != typeid(T))
+			pObject->BASE::AssignFrom(source);
+	}
+
+	template <class R>
+	AssignFromHelperClass & operator()(const char *name, void (T::*pm)(R))	// VC60 workaround: "const R &" here causes compiler error
+	{
+		if (!m_done)
+		{
+			R value = Hack_DefaultValueFromConstReferenceType(reinterpret_cast<R>(*(int *)NULL));
+			if (!Hack_GetValueIntoConstReference(m_source, name, value))
+				throw InvalidArgument(std::string(typeid(T).name()) + ": Missing required parameter '" + name + "'");
+			(m_pObject->*pm)(value);
+		}
+		return *this;
+	}
+
+	template <class R, class S>
+	AssignFromHelperClass & operator()(const char *name1, const char *name2, void (T::*pm)(R, S))	// VC60 workaround: "const R &" here causes compiler error
+	{
+		if (!m_done)
+		{
+			R value1 = Hack_DefaultValueFromConstReferenceType(reinterpret_cast<R>(*(int *)NULL));
+			if (!Hack_GetValueIntoConstReference(m_source, name1, value1))
+				throw InvalidArgument(std::string(typeid(T).name()) + ": Missing required parameter '" + name1 + "'");
+			S value2 = Hack_DefaultValueFromConstReferenceType(reinterpret_cast<S>(*(int *)NULL));
+			if (!Hack_GetValueIntoConstReference(m_source, name2, value2))
+				throw InvalidArgument(std::string(typeid(T).name()) + ": Missing required parameter '" + name2 + "'");
+			(m_pObject->*pm)(value1, value2);
+		}
+		return *this;
+	}
+
+private:
+	T *m_pObject;
+	const NameValuePairs &m_source;
+	bool m_done;
+};
+
+template <class BASE, class T>
+AssignFromHelperClass<T, BASE> AssignFromHelper(T *pObject, const NameValuePairs &source, BASE *dummy=NULL)
+{
+	return AssignFromHelperClass<T, BASE>(pObject, source);
+}
+
+template <class T>
+AssignFromHelperClass<T, T> AssignFromHelper(T *pObject, const NameValuePairs &source)
+{
+	return AssignFromHelperClass<T, T>(pObject, source);
+}
+
+// ********************************************************
+
+// to allow the linker to discard Integer code if not needed.
+typedef bool (CRYPTOPP_API * PAssignIntToInteger)(const std::type_info &valueType, void *pInteger, const void *pInt);
+CRYPTOPP_DLL extern PAssignIntToInteger g_pAssignIntToInteger;
+
+CRYPTOPP_DLL const std::type_info & CRYPTOPP_API IntegerTypeId();
+
+class CRYPTOPP_DLL AlgorithmParametersBase
+{
+public:
+	class ParameterNotUsed : public Exception
+	{
+	public: 
+		ParameterNotUsed(const char *name) : Exception(OTHER_ERROR, std::string("AlgorithmParametersBase: parameter \"") + name + "\" not used") {}
+	};
+
+	// this is actually a move, not a copy
+	AlgorithmParametersBase(const AlgorithmParametersBase &x)
+		: m_name(x.m_name), m_throwIfNotUsed(x.m_throwIfNotUsed), m_used(x.m_used)
+	{
+		m_next.reset(const_cast<AlgorithmParametersBase &>(x).m_next.release());
+		x.m_used = true;
+	}
+
+	AlgorithmParametersBase(const char *name, bool throwIfNotUsed)
+		: m_name(name), m_throwIfNotUsed(throwIfNotUsed), m_used(false) {}
+
+	virtual ~AlgorithmParametersBase()
+	{
+#ifdef CRYPTOPP_UNCAUGHT_EXCEPTION_AVAILABLE
+		if (!std::uncaught_exception())
+#else
+		try
+#endif
+		{
+			if (m_throwIfNotUsed && !m_used)
+				throw ParameterNotUsed(m_name);
+		}
+#ifndef CRYPTOPP_UNCAUGHT_EXCEPTION_AVAILABLE
+		catch(...)
+		{
+		}
+#endif
+	}
+
+	bool GetVoidValue(const char *name, const std::type_info &valueType, void *pValue) const;
+	
+protected:
+	friend class AlgorithmParameters;
+	void operator=(const AlgorithmParametersBase& rhs);	// assignment not allowed, declare this for VC60
+
+	virtual void AssignValue(const char *name, const std::type_info &valueType, void *pValue) const =0;
+	virtual void MoveInto(void *p) const =0;	// not really const
+
+	const char *m_name;
+	bool m_throwIfNotUsed;
+	mutable bool m_used;
+	member_ptr<AlgorithmParametersBase> m_next;
+};
+
+template <class T>
+class AlgorithmParametersTemplate : public AlgorithmParametersBase
+{
+public:
+	AlgorithmParametersTemplate(const char *name, const T &value, bool throwIfNotUsed)
+		: AlgorithmParametersBase(name, throwIfNotUsed), m_value(value)
+	{
+	}
+
+	void AssignValue(const char *name, const std::type_info &valueType, void *pValue) const
+	{
+		// special case for retrieving an Integer parameter when an int was passed in
+		if (!(g_pAssignIntToInteger != NULL && typeid(T) == typeid(int) && g_pAssignIntToInteger(valueType, pValue, &m_value)))
+		{
+			NameValuePairs::ThrowIfTypeMismatch(name, typeid(T), valueType);
+			*reinterpret_cast<T *>(pValue) = m_value;
+		}
+	}
+
+	void MoveInto(void *buffer) const
+	{
+		AlgorithmParametersTemplate<T>* p = new(buffer) AlgorithmParametersTemplate<T>(*this);
+	}
+
+protected:
+	T m_value;
+};
+
+CRYPTOPP_DLL_TEMPLATE_CLASS AlgorithmParametersTemplate<bool>;
+CRYPTOPP_DLL_TEMPLATE_CLASS AlgorithmParametersTemplate<int>;
+CRYPTOPP_DLL_TEMPLATE_CLASS AlgorithmParametersTemplate<ConstByteArrayParameter>;
+
+class CRYPTOPP_DLL AlgorithmParameters : public NameValuePairs
+{
+public:
+	AlgorithmParameters();
+
+#ifdef __BORLANDC__
+	template <class T>
+	AlgorithmParameters(const char *name, const T &value, bool throwIfNotUsed=true)
+		: m_next(new AlgorithmParametersTemplate<T>(name, value, throwIfNotUsed))
+		, m_defaultThrowIfNotUsed(throwIfNotUsed)
+	{
+	}
+#endif
+
+	AlgorithmParameters(const AlgorithmParameters &x);
+
+	AlgorithmParameters & operator=(const AlgorithmParameters &x);
+
+	template <class T>
+	AlgorithmParameters & operator()(const char *name, const T &value, bool throwIfNotUsed)
+	{
+		member_ptr<AlgorithmParametersBase> p(new AlgorithmParametersTemplate<T>(name, value, throwIfNotUsed));
+		p->m_next.reset(m_next.release());
+		m_next.reset(p.release());
+		m_defaultThrowIfNotUsed = throwIfNotUsed;
+		return *this;
+	}
+
+	template <class T>
+	AlgorithmParameters & operator()(const char *name, const T &value)
+	{
+		return operator()(name, value, m_defaultThrowIfNotUsed);
+	}
+
+	bool GetVoidValue(const char *name, const std::type_info &valueType, void *pValue) const;
+
+protected:
+	member_ptr<AlgorithmParametersBase> m_next;
+	bool m_defaultThrowIfNotUsed;
+};
+
+//! Create an object that implements NameValuePairs for passing parameters
+/*! \param throwIfNotUsed if true, the object will throw an exception if the value is not accessed
+	\note throwIfNotUsed is ignored if using a compiler that does not support std::uncaught_exception(),
+	such as MSVC 7.0 and earlier.
+	\note A NameValuePairs object containing an arbitrary number of name value pairs may be constructed by
+	repeatedly using operator() on the object returned by MakeParameters, for example:
+	AlgorithmParameters parameters = MakeParameters(name1, value1)(name2, value2)(name3, value3);
+*/
+#ifdef __BORLANDC__
+typedef AlgorithmParameters MakeParameters;
+#else
+template <class T>
+AlgorithmParameters MakeParameters(const char *name, const T &value, bool throwIfNotUsed = true)
+{
+	return AlgorithmParameters()(name, value, throwIfNotUsed);
+}
+#endif
+
+#define CRYPTOPP_GET_FUNCTION_ENTRY(name)		(Name::name(), &ThisClass::Get##name)
+#define CRYPTOPP_SET_FUNCTION_ENTRY(name)		(Name::name(), &ThisClass::Set##name)
+#define CRYPTOPP_SET_FUNCTION_ENTRY2(name1, name2)	(Name::name1(), Name::name2(), &ThisClass::Set##name1##And##name2)
+
+NAMESPACE_END
+
+#endif