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, const NameValuePairs *searchFirst)
00092 : m_pObject(pObject), m_name(name), m_valueType(&valueType), m_pValue(pValue), m_found(false), m_getValueNames(false)
00093 {
00094 if (strcmp(m_name, "ValueNames") == 0)
00095 {
00096 m_found = m_getValueNames = true;
00097 NameValuePairs::ThrowIfTypeMismatch(m_name, typeid(std::string), *m_valueType);
00098 if (searchFirst)
00099 searchFirst->GetVoidValue(m_name, valueType, pValue);
00100 if (typeid(T) != typeid(BASE))
00101 pObject->BASE::GetVoidValue(m_name, valueType, pValue);
00102 ((*reinterpret_cast<std::string *>(m_pValue) += "ThisPointer:") += typeid(T).name()) += ';';
00103 }
00104
00105 if (!m_found && strncmp(m_name, "ThisPointer:", 12) == 0 && strcmp(m_name+12, typeid(T).name()) == 0)
00106 {
00107 NameValuePairs::ThrowIfTypeMismatch(m_name, typeid(T *), *m_valueType);
00108 *reinterpret_cast<const T **>(pValue) = pObject;
00109 m_found = true;
00110 return;
00111 }
00112
00113 if (!m_found && searchFirst)
00114 m_found = searchFirst->GetVoidValue(m_name, valueType, pValue);
00115
00116 if (!m_found && typeid(T) != typeid(BASE))
00117 m_found = pObject->BASE::GetVoidValue(m_name, valueType, pValue);
00118 }
00119
00120 operator bool() const {return m_found;}
00121
00122 template <class R>
00123 GetValueHelperClass<T,BASE> & operator()(const char *name, const R & (T::*pm)() const)
00124 {
00125 if (m_getValueNames)
00126 (*reinterpret_cast<std::string *>(m_pValue) += name) += ";";
00127 if (!m_found && strcmp(name, m_name) == 0)
00128 {
00129 NameValuePairs::ThrowIfTypeMismatch(name, typeid(R), *m_valueType);
00130 *reinterpret_cast<R *>(m_pValue) = (m_pObject->*pm)();
00131 m_found = true;
00132 }
00133 return *this;
00134 }
00135
00136 GetValueHelperClass<T,BASE> &Assignable()
00137 {
00138 if (m_getValueNames)
00139 ((*reinterpret_cast<std::string *>(m_pValue) += "ThisObject:") += typeid(T).name()) += ';';
00140 if (!m_found && strncmp(m_name, "ThisObject:", 11) == 0 && strcmp(m_name+11, typeid(T).name()) == 0)
00141 {
00142 NameValuePairs::ThrowIfTypeMismatch(m_name, typeid(T), *m_valueType);
00143 *reinterpret_cast<T *>(m_pValue) = *m_pObject;
00144 m_found = true;
00145 }
00146 return *this;
00147 }
00148
00149 private:
00150 const T *m_pObject;
00151 const char *m_name;
00152 const std::type_info *m_valueType;
00153 void *m_pValue;
00154 bool m_found, m_getValueNames;
00155 };
00156
00157 template <class BASE, class T>
00158 GetValueHelperClass<T, BASE> GetValueHelper(const T *pObject, const char *name, const std::type_info &valueType, void *pValue, const NameValuePairs *searchFirst=NULL, BASE *dummy=NULL)
00159 {
00160 return GetValueHelperClass<T, BASE>(pObject, name, valueType, pValue, searchFirst);
00161 }
00162
00163 template <class T>
00164 GetValueHelperClass<T, T> GetValueHelper(const T *pObject, const char *name, const std::type_info &valueType, void *pValue, const NameValuePairs *searchFirst=NULL)
00165 {
00166 return GetValueHelperClass<T, T>(pObject, name, valueType, pValue, searchFirst);
00167 }
00168
00169
00170
00171 template <class R>
00172 R Hack_DefaultValueFromConstReferenceType(const R &)
00173 {
00174 return R();
00175 }
00176
00177 template <class R>
00178 bool Hack_GetValueIntoConstReference(const NameValuePairs &source, const char *name, const R &value)
00179 {
00180 return source.GetValue(name, const_cast<R &>(value));
00181 }
00182
00183 template <class T, class BASE>
00184 class AssignFromHelperClass
00185 {
00186 public:
00187 AssignFromHelperClass(T *pObject, const NameValuePairs &source)
00188 : m_pObject(pObject), m_source(source), m_done(false)
00189 {
00190 if (source.GetThisObject(*pObject))
00191 m_done = true;
00192 else if (typeid(BASE) != typeid(T))
00193 pObject->BASE::AssignFrom(source);
00194 }
00195
00196 template <class R>
00197 AssignFromHelperClass & operator()(const char *name, void (T::*pm)(R))
00198 {
00199 if (!m_done)
00200 {
00201 R value = Hack_DefaultValueFromConstReferenceType(reinterpret_cast<R>(*(int *)NULL));
00202 if (!Hack_GetValueIntoConstReference(m_source, name, value))
00203 throw InvalidArgument(std::string(typeid(T).name()) + ": Missing required parameter '" + name + "'");
00204 (m_pObject->*pm)(value);
00205 }
00206 return *this;
00207 }
00208
00209 template <class R, class S>
00210 AssignFromHelperClass & operator()(const char *name1, const char *name2, void (T::*pm)(R, S))
00211 {
00212 if (!m_done)
00213 {
00214 R value1 = Hack_DefaultValueFromConstReferenceType(reinterpret_cast<R>(*(int *)NULL));
00215 if (!Hack_GetValueIntoConstReference(m_source, name1, value1))
00216 throw InvalidArgument(std::string(typeid(T).name()) + ": Missing required parameter '" + name1 + "'");
00217 S value2 = Hack_DefaultValueFromConstReferenceType(reinterpret_cast<S>(*(int *)NULL));
00218 if (!Hack_GetValueIntoConstReference(m_source, name2, value2))
00219 throw InvalidArgument(std::string(typeid(T).name()) + ": Missing required parameter '" + name2 + "'");
00220 (m_pObject->*pm)(value1, value2);
00221 }
00222 return *this;
00223 }
00224
00225 private:
00226 T *m_pObject;
00227 const NameValuePairs &m_source;
00228 bool m_done;
00229 };
00230
00231 template <class BASE, class T>
00232 AssignFromHelperClass<T, BASE> AssignFromHelper(T *pObject, const NameValuePairs &source, BASE *dummy=NULL)
00233 {
00234 return AssignFromHelperClass<T, BASE>(pObject, source);
00235 }
00236
00237 template <class T>
00238 AssignFromHelperClass<T, T> AssignFromHelper(T *pObject, const NameValuePairs &source)
00239 {
00240 return AssignFromHelperClass<T, T>(pObject, source);
00241 }
00242
00243
00244
00245
00246 extern bool (*AssignIntToInteger)(const std::type_info &valueType, void *pInteger, const void *pInt);
00247
00248 const std::type_info & IntegerTypeId();
00249
00250 template <class BASE, class T>
00251 class AlgorithmParameters : public NameValuePairs
00252 {
00253 public:
00254 AlgorithmParameters(const BASE &base, const char *name, const T &value)
00255 : m_base(base), m_name(name), m_value(value)
00256 #ifndef NDEBUG
00257 , m_used(false)
00258 #endif
00259 {}
00260
00261 #ifndef NDEBUG
00262 AlgorithmParameters(const AlgorithmParameters ©)
00263 : m_base(copy.m_base), m_name(copy.m_name), m_value(copy.m_value), m_used(false)
00264 {
00265 copy.m_used = true;
00266 }
00267
00268
00269
00270 #endif
00271
00272 template <class R>
00273 AlgorithmParameters<AlgorithmParameters<BASE,T>, R> operator()(const char *name, const R &value) const
00274 {
00275 return AlgorithmParameters<AlgorithmParameters<BASE,T>, R>(*this, name, value);
00276 }
00277
00278 bool GetVoidValue(const char *name, const std::type_info &valueType, void *pValue) const
00279 {
00280 if (strcmp(name, "ValueNames") == 0)
00281 {
00282 ThrowIfTypeMismatch(name, typeid(std::string), valueType);
00283 m_base.GetVoidValue(name, valueType, pValue);
00284 (*reinterpret_cast<std::string *>(pValue) += m_name) += ";";
00285 return true;
00286 }
00287 else if (strcmp(name, m_name) == 0)
00288 {
00289
00290 if (!(AssignIntToInteger != NULL && typeid(T) == typeid(int) && AssignIntToInteger(valueType, pValue, &m_value)))
00291 {
00292 ThrowIfTypeMismatch(name, typeid(T), valueType);
00293 *reinterpret_cast<T *>(pValue) = m_value;
00294 }
00295 #ifndef NDEBUG
00296 m_used = true;
00297 #endif
00298 return true;
00299 }
00300 else
00301 return m_base.GetVoidValue(name, valueType, pValue);
00302 }
00303
00304 private:
00305 BASE m_base;
00306 const char *m_name;
00307 T m_value;
00308 #ifndef NDEBUG
00309 mutable bool m_used;
00310 #endif
00311 };
00312
00313 template <class T>
00314 AlgorithmParameters<NullNameValuePairs,T> MakeParameters(const char *name, const T &value)
00315 {
00316 return AlgorithmParameters<NullNameValuePairs,T>(g_nullNameValuePairs, name, value);
00317 }
00318
00319 #define CRYPTOPP_GET_FUNCTION_ENTRY(name) (Name::name(), &ThisClass::Get##name)
00320 #define CRYPTOPP_SET_FUNCTION_ENTRY(name) (Name::name(), &ThisClass::Set##name)
00321 #define CRYPTOPP_SET_FUNCTION_ENTRY2(name1, name2) (Name::name1(), Name::name2(), &ThisClass::Set##name1##And##name2)
00322
00323 NAMESPACE_END
00324
00325 #endif