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, size_t 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(CPP_TYPENAME T::value_type) == 1);
00027 Assign((const byte *)string.data(), string.size(), deepCopy);
00028 }
00029
00030 void Assign(const byte *data, size_t 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 size_t size() const {return m_deepCopy ? m_block.size() : m_size;}
00045
00046 private:
00047 bool m_deepCopy;
00048 const byte *m_data;
00049 size_t 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 size_t size() const {return m_size;}
00064
00065 private:
00066 byte *m_data;
00067 size_t m_size;
00068 };
00069
00070 class CRYPTOPP_DLL 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 private:
00079 const NameValuePairs &m_pairs1, &m_pairs2;
00080 };
00081
00082 template <class T, class BASE>
00083 class GetValueHelperClass
00084 {
00085 public:
00086 GetValueHelperClass(const T *pObject, const char *name, const std::type_info &valueType, void *pValue, const NameValuePairs *searchFirst)
00087 : m_pObject(pObject), m_name(name), m_valueType(&valueType), m_pValue(pValue), m_found(false), m_getValueNames(false)
00088 {
00089 if (strcmp(m_name, "ValueNames") == 0)
00090 {
00091 m_found = m_getValueNames = true;
00092 NameValuePairs::ThrowIfTypeMismatch(m_name, typeid(std::string), *m_valueType);
00093 if (searchFirst)
00094 searchFirst->GetVoidValue(m_name, valueType, pValue);
00095 if (typeid(T) != typeid(BASE))
00096 pObject->BASE::GetVoidValue(m_name, valueType, pValue);
00097 ((*reinterpret_cast<std::string *>(m_pValue) += "ThisPointer:") += typeid(T).name()) += ';';
00098 }
00099
00100 if (!m_found && strncmp(m_name, "ThisPointer:", 12) == 0 && strcmp(m_name+12, typeid(T).name()) == 0)
00101 {
00102 NameValuePairs::ThrowIfTypeMismatch(m_name, typeid(T *), *m_valueType);
00103 *reinterpret_cast<const T **>(pValue) = pObject;
00104 m_found = true;
00105 return;
00106 }
00107
00108 if (!m_found && searchFirst)
00109 m_found = searchFirst->GetVoidValue(m_name, valueType, pValue);
00110
00111 if (!m_found && typeid(T) != typeid(BASE))
00112 m_found = pObject->BASE::GetVoidValue(m_name, valueType, pValue);
00113 }
00114
00115 operator bool() const {return m_found;}
00116
00117 template <class R>
00118 GetValueHelperClass<T,BASE> & operator()(const char *name, const R & (T::*pm)() const)
00119 {
00120 if (m_getValueNames)
00121 (*reinterpret_cast<std::string *>(m_pValue) += name) += ";";
00122 if (!m_found && strcmp(name, m_name) == 0)
00123 {
00124 NameValuePairs::ThrowIfTypeMismatch(name, typeid(R), *m_valueType);
00125 *reinterpret_cast<R *>(m_pValue) = (m_pObject->*pm)();
00126 m_found = true;
00127 }
00128 return *this;
00129 }
00130
00131 GetValueHelperClass<T,BASE> &Assignable()
00132 {
00133 #ifndef __INTEL_COMPILER // ICL 9.1 workaround: Intel compiler copies the vTable pointer for some reason
00134 if (m_getValueNames)
00135 ((*reinterpret_cast<std::string *>(m_pValue) += "ThisObject:") += typeid(T).name()) += ';';
00136 if (!m_found && strncmp(m_name, "ThisObject:", 11) == 0 && strcmp(m_name+11, typeid(T).name()) == 0)
00137 {
00138 NameValuePairs::ThrowIfTypeMismatch(m_name, typeid(T), *m_valueType);
00139 *reinterpret_cast<T *>(m_pValue) = *m_pObject;
00140 m_found = true;
00141 }
00142 #endif
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, const NameValuePairs *searchFirst=NULL, BASE *dummy=NULL)
00156 {
00157 return GetValueHelperClass<T, BASE>(pObject, name, valueType, pValue, searchFirst);
00158 }
00159
00160 template <class T>
00161 GetValueHelperClass<T, T> GetValueHelper(const T *pObject, const char *name, const std::type_info &valueType, void *pValue, const NameValuePairs *searchFirst=NULL)
00162 {
00163 return GetValueHelperClass<T, T>(pObject, name, valueType, pValue, searchFirst);
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
00243 typedef bool (CRYPTOPP_API * PAssignIntToInteger)(const std::type_info &valueType, void *pInteger, const void *pInt);
00244 CRYPTOPP_DLL extern PAssignIntToInteger g_pAssignIntToInteger;
00245
00246 CRYPTOPP_DLL const std::type_info & CRYPTOPP_API IntegerTypeId();
00247
00248 class CRYPTOPP_DLL AlgorithmParametersBase
00249 {
00250 public:
00251 class ParameterNotUsed : public Exception
00252 {
00253 public:
00254 ParameterNotUsed(const char *name) : Exception(OTHER_ERROR, std::string("AlgorithmParametersBase: parameter \"") + name + "\" not used") {}
00255 };
00256
00257
00258 AlgorithmParametersBase(const AlgorithmParametersBase &x)
00259 : m_name(x.m_name), m_throwIfNotUsed(x.m_throwIfNotUsed), m_used(x.m_used)
00260 {
00261 m_next.reset(const_cast<AlgorithmParametersBase &>(x).m_next.release());
00262 x.m_used = true;
00263 }
00264
00265 AlgorithmParametersBase(const char *name, bool throwIfNotUsed)
00266 : m_name(name), m_throwIfNotUsed(throwIfNotUsed), m_used(false) {}
00267
00268 virtual ~AlgorithmParametersBase()
00269 {
00270 #ifdef CRYPTOPP_UNCAUGHT_EXCEPTION_AVAILABLE
00271 if (!std::uncaught_exception())
00272 #else
00273 try
00274 #endif
00275 {
00276 if (m_throwIfNotUsed && !m_used)
00277 throw ParameterNotUsed(m_name);
00278 }
00279 #ifndef CRYPTOPP_UNCAUGHT_EXCEPTION_AVAILABLE
00280 catch(...)
00281 {
00282 }
00283 #endif
00284 }
00285
00286 bool GetVoidValue(const char *name, const std::type_info &valueType, void *pValue) const;
00287
00288 protected:
00289 friend class AlgorithmParameters;
00290 void operator=(const AlgorithmParametersBase& rhs);
00291
00292 virtual void AssignValue(const char *name, const std::type_info &valueType, void *pValue) const =0;
00293 virtual void MoveInto(void *p) const =0;
00294
00295 const char *m_name;
00296 bool m_throwIfNotUsed;
00297 mutable bool m_used;
00298 member_ptr<AlgorithmParametersBase> m_next;
00299 };
00300
00301 template <class T>
00302 class AlgorithmParametersTemplate : public AlgorithmParametersBase
00303 {
00304 public:
00305 AlgorithmParametersTemplate(const char *name, const T &value, bool throwIfNotUsed)
00306 : AlgorithmParametersBase(name, throwIfNotUsed), m_value(value)
00307 {
00308 }
00309
00310 void AssignValue(const char *name, const std::type_info &valueType, void *pValue) const
00311 {
00312
00313 if (!(g_pAssignIntToInteger != NULL && typeid(T) == typeid(int) && g_pAssignIntToInteger(valueType, pValue, &m_value)))
00314 {
00315 NameValuePairs::ThrowIfTypeMismatch(name, typeid(T), valueType);
00316 *reinterpret_cast<T *>(pValue) = m_value;
00317 }
00318 }
00319
00320 void MoveInto(void *buffer) const
00321 {
00322 AlgorithmParametersTemplate<T>* p = new(buffer) AlgorithmParametersTemplate<T>(*this);
00323 }
00324
00325 protected:
00326 T m_value;
00327 };
00328
00329 CRYPTOPP_DLL_TEMPLATE_CLASS AlgorithmParametersTemplate<bool>;
00330 CRYPTOPP_DLL_TEMPLATE_CLASS AlgorithmParametersTemplate<int>;
00331 CRYPTOPP_DLL_TEMPLATE_CLASS AlgorithmParametersTemplate<ConstByteArrayParameter>;
00332
00333 class CRYPTOPP_DLL AlgorithmParameters : public NameValuePairs
00334 {
00335 public:
00336 AlgorithmParameters();
00337
00338 #ifdef __BORLANDC__
00339 template <class T>
00340 AlgorithmParameters(const char *name, const T &value, bool throwIfNotUsed=true)
00341 : m_next(new AlgorithmParametersTemplate<T>(name, value, throwIfNotUsed))
00342 , m_defaultThrowIfNotUsed(throwIfNotUsed)
00343 {
00344 }
00345 #endif
00346
00347 AlgorithmParameters(const AlgorithmParameters &x);
00348
00349 AlgorithmParameters & operator=(const AlgorithmParameters &x);
00350
00351 template <class T>
00352 AlgorithmParameters & operator()(const char *name, const T &value, bool throwIfNotUsed)
00353 {
00354 member_ptr<AlgorithmParametersBase> p(new AlgorithmParametersTemplate<T>(name, value, throwIfNotUsed));
00355 p->m_next.reset(m_next.release());
00356 m_next.reset(p.release());
00357 m_defaultThrowIfNotUsed = throwIfNotUsed;
00358 return *this;
00359 }
00360
00361 template <class T>
00362 AlgorithmParameters & operator()(const char *name, const T &value)
00363 {
00364 return operator()(name, value, m_defaultThrowIfNotUsed);
00365 }
00366
00367 bool GetVoidValue(const char *name, const std::type_info &valueType, void *pValue) const;
00368
00369 protected:
00370 member_ptr<AlgorithmParametersBase> m_next;
00371 bool m_defaultThrowIfNotUsed;
00372 };
00373
00374
00375
00376
00377
00378
00379
00380
00381
00382 #ifdef __BORLANDC__
00383 typedef AlgorithmParameters MakeParameters;
00384 #else
00385 template <class T>
00386 AlgorithmParameters MakeParameters(const char *name, const T &value, bool throwIfNotUsed = true)
00387 {
00388 return AlgorithmParameters()(name, value, throwIfNotUsed);
00389 }
00390 #endif
00391
00392 #define CRYPTOPP_GET_FUNCTION_ENTRY(name) (Name::name(), &ThisClass::Get##name)
00393 #define CRYPTOPP_SET_FUNCTION_ENTRY(name) (Name::name(), &ThisClass::Set##name)
00394 #define CRYPTOPP_SET_FUNCTION_ENTRY2(name1, name2) (Name::name1(), Name::name2(), &ThisClass::Set##name1##And##name2)
00395
00396 NAMESPACE_END
00397
00398 #endif