00001 #ifndef CRYPTOPP_ALGPARAM_H
00002 #define CRYPTOPP_ALGPARAM_H
00003
00004 #include "cryptlib.h"
00005 #include "smartptr.h"
00006 #include "secblock.h"
00007
00008 NAMESPACE_BEGIN(CryptoPP)
00009
00010
00011
00012
00013 class ConstByteArrayParameter
00014 {
00015 public:
00016 ConstByteArrayParameter(const char *data = NULL, bool deepCopy = false)
00017 {
00018 Assign((const byte *)data, data ? strlen(data) : 0, deepCopy);
00019 }
00020 ConstByteArrayParameter(const byte *data, unsigned int size, bool deepCopy = false)
00021 {
00022 Assign(data, size, deepCopy);
00023 }
00024 template <class T> ConstByteArrayParameter(const T &string, bool deepCopy = false)
00025 {
00026 CRYPTOPP_COMPILE_ASSERT(sizeof(string[0])==1);
00027 Assign((const byte *)string.data(), string.size(), deepCopy);
00028 }
00029
00030 void Assign(const byte *data, unsigned int size, bool deepCopy)
00031 {
00032 if (deepCopy)
00033 m_block.Assign(data, size);
00034 else
00035 {
00036 m_data = data;
00037 m_size = size;
00038 }
00039 m_deepCopy = deepCopy;
00040 }
00041
00042 const byte *begin() const {return m_deepCopy ? m_block.begin() : m_data;}
00043 const byte *end() const {return m_deepCopy ? m_block.end() : m_data + m_size;}
00044 unsigned int size() const {return m_deepCopy ? m_block.size() : m_size;}
00045
00046 private:
00047 bool m_deepCopy;
00048 const byte *m_data;
00049 unsigned int m_size;
00050 SecByteBlock m_block;
00051 };
00052
00053 class ByteArrayParameter
00054 {
00055 public:
00056 ByteArrayParameter(byte *data = NULL, unsigned int size = 0)
00057 : m_data(data), m_size(size) {}
00058 ByteArrayParameter(SecByteBlock &block)
00059 : m_data(block.begin()), m_size(block.size()) {}
00060
00061 byte *begin() const {return m_data;}
00062 byte *end() const {return m_data + m_size;}
00063 unsigned int size() const {return m_size;}
00064
00065 private:
00066 byte *m_data;
00067 unsigned int m_size;
00068 };
00069
00070 class CombinedNameValuePairs : public NameValuePairs
00071 {
00072 public:
00073 CombinedNameValuePairs(const NameValuePairs &pairs1, const NameValuePairs &pairs2)
00074 : m_pairs1(pairs1), m_pairs2(pairs2) {}
00075
00076 bool GetVoidValue(const char *name, const std::type_info &valueType, void *pValue) const
00077 {
00078 if (strcmp(name, "ValueNames") == 0)
00079 return m_pairs1.GetVoidValue(name, valueType, pValue) && m_pairs2.GetVoidValue(name, valueType, pValue);
00080 else
00081 return m_pairs1.GetVoidValue(name, valueType, pValue) || m_pairs2.GetVoidValue(name, valueType, pValue);
00082 }
00083
00084 const NameValuePairs &m_pairs1, &m_pairs2;
00085 };
00086
00087 template <class T, class BASE>
00088 class GetValueHelperClass
00089 {
00090 public:
00091 GetValueHelperClass(const T *pObject, const char *name, const std::type_info &valueType, void *pValue)
00092 : m_pObject(pObject), m_name(name), m_valueType(&valueType), m_pValue(pValue), m_found(false), m_getValueNames(false)
00093 {
00094 if (strcmp(name, "ValueNames") == 0)
00095 m_found = m_getValueNames = true;
00096
00097 std::string thisPointerName = std::string("ThisPointer:") + typeid(T).name();
00098
00099 if (m_getValueNames)
00100 {
00101 NameValuePairs::ThrowIfTypeMismatch(name, typeid(std::string), *m_valueType);
00102 if (typeid(T) != typeid(BASE))
00103 pObject->BASE::GetVoidValue(name, valueType, pValue);
00104 (*reinterpret_cast<std::string *>(m_pValue) += thisPointerName) += ";";
00105 }
00106 else if (name == thisPointerName)
00107 {
00108 NameValuePairs::ThrowIfTypeMismatch(name, typeid(T *), *m_valueType);
00109 *reinterpret_cast<const T **>(pValue) = pObject;
00110 m_found = true;
00111 }
00112 else if (typeid(T) != typeid(BASE))
00113 m_found = pObject->BASE::GetVoidValue(name, valueType, pValue);
00114 }
00115
00116 operator bool() const {return m_found;}
00117
00118 template <class R>
00119 GetValueHelperClass<T,BASE> & operator()(const char *name, const R & (T::*pm)() const)
00120 {
00121 if (m_getValueNames)
00122 (*reinterpret_cast<std::string *>(m_pValue) += name) += ";";
00123 else if (!m_found && strcmp(name, m_name) == 0)
00124 {
00125 NameValuePairs::ThrowIfTypeMismatch(name, typeid(R), *m_valueType);
00126 *reinterpret_cast<R *>(m_pValue) = (m_pObject->*pm)();
00127 m_found = true;
00128 }
00129 return *this;
00130 }
00131
00132 GetValueHelperClass<T,BASE> &Assignable()
00133 {
00134 std::string thisObjectName = std::string("ThisObject:") + typeid(T).name();
00135 if (m_getValueNames)
00136 (*reinterpret_cast<std::string *>(m_pValue) += thisObjectName) += ";";
00137 else if (!m_found && m_name == thisObjectName)
00138 {
00139 NameValuePairs::ThrowIfTypeMismatch(m_name, typeid(T), *m_valueType);
00140 *reinterpret_cast<T *>(m_pValue) = *m_pObject;
00141 m_found = true;
00142 }
00143 return *this;
00144 }
00145
00146 private:
00147 const T *m_pObject;
00148 const char *m_name;
00149 const std::type_info *m_valueType;
00150 void *m_pValue;
00151 bool m_found, m_getValueNames;
00152 };
00153
00154 template <class BASE, class T>
00155 GetValueHelperClass<T, BASE> GetValueHelper(const T *pObject, const char *name, const std::type_info &valueType, void *pValue, BASE *dummy=NULL)
00156 {
00157 return GetValueHelperClass<T, BASE>(pObject, name, valueType, pValue);
00158 }
00159
00160 template <class T>
00161 GetValueHelperClass<T, T> GetValueHelper(const T *pObject, const char *name, const std::type_info &valueType, void *pValue)
00162 {
00163 return GetValueHelperClass<T, T>(pObject, name, valueType, pValue);
00164 }
00165
00166
00167
00168 template <class R>
00169 R Hack_DefaultValueFromConstReferenceType(const R &)
00170 {
00171 return R();
00172 }
00173
00174 template <class R>
00175 bool Hack_GetValueIntoConstReference(const NameValuePairs &source, const char *name, const R &value)
00176 {
00177 return source.GetValue(name, const_cast<R &>(value));
00178 }
00179
00180 template <class T, class BASE>
00181 class AssignFromHelperClass
00182 {
00183 public:
00184 AssignFromHelperClass(T *pObject, const NameValuePairs &source)
00185 : m_pObject(pObject), m_source(source), m_done(false)
00186 {
00187 if (source.GetThisObject(*pObject))
00188 m_done = true;
00189 else if (typeid(BASE) != typeid(T))
00190 pObject->BASE::AssignFrom(source);
00191 }
00192
00193 template <class R>
00194 AssignFromHelperClass & operator()(const char *name, void (T::*pm)(R))
00195 {
00196 if (!m_done)
00197 {
00198 R value = Hack_DefaultValueFromConstReferenceType(reinterpret_cast<R>(*(int *)NULL));
00199 if (!Hack_GetValueIntoConstReference(m_source, name, value))
00200 throw InvalidArgument(std::string(typeid(T).name()) + ": Missing required parameter '" + name + "'");
00201 (m_pObject->*pm)(value);
00202 }
00203 return *this;
00204 }
00205
00206 template <class R, class S>
00207 AssignFromHelperClass & operator()(const char *name1, const char *name2, void (T::*pm)(R, S))
00208 {
00209 if (!m_done)
00210 {
00211 R value1 = Hack_DefaultValueFromConstReferenceType(reinterpret_cast<R>(*(int *)NULL));
00212 if (!Hack_GetValueIntoConstReference(m_source, name1, value1))
00213 throw InvalidArgument(std::string(typeid(T).name()) + ": Missing required parameter '" + name1 + "'");
00214 S value2 = Hack_DefaultValueFromConstReferenceType(reinterpret_cast<S>(*(int *)NULL));
00215 if (!Hack_GetValueIntoConstReference(m_source, name2, value2))
00216 throw InvalidArgument(std::string(typeid(T).name()) + ": Missing required parameter '" + name2 + "'");
00217 (m_pObject->*pm)(value1, value2);
00218 }
00219 return *this;
00220 }
00221
00222 private:
00223 T *m_pObject;
00224 const NameValuePairs &m_source;
00225 bool m_done;
00226 };
00227
00228 template <class BASE, class T>
00229 AssignFromHelperClass<T, BASE> AssignFromHelper(T *pObject, const NameValuePairs &source, BASE *dummy=NULL)
00230 {
00231 return AssignFromHelperClass<T, BASE>(pObject, source);
00232 }
00233
00234 template <class T>
00235 AssignFromHelperClass<T, T> AssignFromHelper(T *pObject, const NameValuePairs &source)
00236 {
00237 return AssignFromHelperClass<T, T>(pObject, source);
00238 }
00239
00240
00241
00242 CRYPTOPP_DLL void AssignIntToInteger(void *pInteger, const void *pInt);
00243
00244 CRYPTOPP_DLL extern const std::type_info &g_typeidInteger;
00245
00246 template <class BASE, class T>
00247 class AlgorithmParameters : public NameValuePairs
00248 {
00249 public:
00250 AlgorithmParameters(const BASE &base, const char *name, const T &value)
00251 : m_base(base), m_name(name), m_value(value)
00252 #ifndef NDEBUG
00253 , m_used(false)
00254 #endif
00255 {}
00256
00257 #ifndef NDEBUG
00258 AlgorithmParameters(const AlgorithmParameters ©)
00259 : m_base(copy.m_base), m_name(copy.m_name), m_value(copy.m_value), m_used(false)
00260 {
00261 copy.m_used = true;
00262 }
00263
00264
00265
00266 #endif
00267
00268 template <class R>
00269 AlgorithmParameters<AlgorithmParameters<BASE,T>, R> operator()(const char *name, const R &value) const
00270 {
00271 return AlgorithmParameters<AlgorithmParameters<BASE,T>, R>(*this, name, value);
00272 }
00273
00274 bool GetVoidValue(const char *name, const std::type_info &valueType, void *pValue) const
00275 {
00276 if (strcmp(name, "ValueNames") == 0)
00277 {
00278 ThrowIfTypeMismatch(name, typeid(std::string), valueType);
00279 m_base.GetVoidValue(name, valueType, pValue);
00280 (*reinterpret_cast<std::string *>(pValue) += m_name) += ";";
00281 return true;
00282 }
00283 else if (strcmp(name, m_name) == 0)
00284 {
00285
00286 if (valueType == g_typeidInteger && typeid(T) == typeid(int))
00287 AssignIntToInteger(pValue, &m_value);
00288 else
00289 {
00290 ThrowIfTypeMismatch(name, typeid(T), valueType);
00291 *reinterpret_cast<T *>(pValue) = m_value;
00292 }
00293 #ifndef NDEBUG
00294 m_used = true;
00295 #endif
00296 return true;
00297 }
00298 else
00299 return m_base.GetVoidValue(name, valueType, pValue);
00300 }
00301
00302 private:
00303 BASE m_base;
00304 const char *m_name;
00305 T m_value;
00306 #ifndef NDEBUG
00307 mutable bool m_used;
00308 #endif
00309 };
00310
00311 template <class T>
00312 AlgorithmParameters<NullNameValuePairs,T> MakeParameters(const char *name, const T &value)
00313 {
00314 return AlgorithmParameters<NullNameValuePairs,T>(g_nullNameValuePairs, name, value);
00315 }
00316
00317 #define CRYPTOPP_GET_FUNCTION_ENTRY(name) (Name::name(), &ThisClass::Get##name)
00318 #define CRYPTOPP_SET_FUNCTION_ENTRY(name) (Name::name(), &ThisClass::Set##name)
00319 #define CRYPTOPP_SET_FUNCTION_ENTRY2(name1, name2) (Name::name1(), Name::name2(), &ThisClass::Set##name1##And##name2)
00320
00321 NAMESPACE_END
00322
00323 #endif