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authorTycho <work.tycho+git@gmail.com>2014-01-26 15:28:51 +0100
committerTycho <work.tycho+git@gmail.com>2014-01-26 15:28:51 +0100
commitbed2ee22e8283a2e8bd0790a89124839319c2fc3 (patch)
treeee9e66a7b7c63995797a502f209079c1422ce9c9 /lib/cryptopp/secblock.h
parentRefactored cBlockHandler::OnUse and dependents (diff)
parentMerge pull request #589 from mc-server/minecartimprovements (diff)
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Diffstat (limited to 'lib/cryptopp/secblock.h')
-rw-r--r--lib/cryptopp/secblock.h467
1 files changed, 0 insertions, 467 deletions
diff --git a/lib/cryptopp/secblock.h b/lib/cryptopp/secblock.h
deleted file mode 100644
index 40cce3341..000000000
--- a/lib/cryptopp/secblock.h
+++ /dev/null
@@ -1,467 +0,0 @@
-// secblock.h - written and placed in the public domain by Wei Dai
-
-#ifndef CRYPTOPP_SECBLOCK_H
-#define CRYPTOPP_SECBLOCK_H
-
-#include "config.h"
-#include "misc.h"
-#include <assert.h>
-
-NAMESPACE_BEGIN(CryptoPP)
-
-// ************** secure memory allocation ***************
-
-template<class T>
-class AllocatorBase
-{
-public:
- typedef T value_type;
- typedef size_t size_type;
-#ifdef CRYPTOPP_MSVCRT6
- typedef ptrdiff_t difference_type;
-#else
- typedef std::ptrdiff_t difference_type;
-#endif
- typedef T * pointer;
- typedef const T * const_pointer;
- typedef T & reference;
- typedef const T & const_reference;
-
- pointer address(reference r) const {return (&r);}
- const_pointer address(const_reference r) const {return (&r); }
- void construct(pointer p, const T& val) {new (p) T(val);}
- void destroy(pointer p) {p->~T();}
- size_type max_size() const {return ~size_type(0)/sizeof(T);} // switch to std::numeric_limits<T>::max later
-
-protected:
- static void CheckSize(size_t n)
- {
- if (n > ~size_t(0) / sizeof(T))
- throw InvalidArgument("AllocatorBase: requested size would cause integer overflow");
- }
-};
-
-#define CRYPTOPP_INHERIT_ALLOCATOR_TYPES \
-typedef typename AllocatorBase<T>::value_type value_type;\
-typedef typename AllocatorBase<T>::size_type size_type;\
-typedef typename AllocatorBase<T>::difference_type difference_type;\
-typedef typename AllocatorBase<T>::pointer pointer;\
-typedef typename AllocatorBase<T>::const_pointer const_pointer;\
-typedef typename AllocatorBase<T>::reference reference;\
-typedef typename AllocatorBase<T>::const_reference const_reference;
-
-#if defined(_MSC_VER) && (_MSC_VER < 1300)
-// this pragma causes an internal compiler error if placed immediately before std::swap(a, b)
-#pragma warning(push)
-#pragma warning(disable: 4700) // VC60 workaround: don't know how to get rid of this warning
-#endif
-
-template <class T, class A>
-typename A::pointer StandardReallocate(A& a, T *p, typename A::size_type oldSize, typename A::size_type newSize, bool preserve)
-{
- if (oldSize == newSize)
- return p;
-
- if (preserve)
- {
- typename A::pointer newPointer = a.allocate(newSize, NULL);
- memcpy_s(newPointer, sizeof(T)*newSize, p, sizeof(T)*STDMIN(oldSize, newSize));
- a.deallocate(p, oldSize);
- return newPointer;
- }
- else
- {
- a.deallocate(p, oldSize);
- return a.allocate(newSize, NULL);
- }
-}
-
-#if defined(_MSC_VER) && (_MSC_VER < 1300)
-#pragma warning(pop)
-#endif
-
-template <class T, bool T_Align16 = false>
-class AllocatorWithCleanup : public AllocatorBase<T>
-{
-public:
- CRYPTOPP_INHERIT_ALLOCATOR_TYPES
-
- pointer allocate(size_type n, const void * = NULL)
- {
- this->CheckSize(n);
- if (n == 0)
- return NULL;
-
-#if CRYPTOPP_BOOL_ALIGN16_ENABLED
- if (T_Align16 && n*sizeof(T) >= 16)
- return (pointer)AlignedAllocate(n*sizeof(T));
-#endif
-
- return (pointer)UnalignedAllocate(n*sizeof(T));
- }
-
- void deallocate(void *p, size_type n)
- {
- SecureWipeArray((pointer)p, n);
-
-#if CRYPTOPP_BOOL_ALIGN16_ENABLED
- if (T_Align16 && n*sizeof(T) >= 16)
- return AlignedDeallocate(p);
-#endif
-
- UnalignedDeallocate(p);
- }
-
- pointer reallocate(T *p, size_type oldSize, size_type newSize, bool preserve)
- {
- return StandardReallocate(*this, p, oldSize, newSize, preserve);
- }
-
- // VS.NET STL enforces the policy of "All STL-compliant allocators have to provide a
- // template class member called rebind".
- template <class U> struct rebind { typedef AllocatorWithCleanup<U, T_Align16> other; };
-#if _MSC_VER >= 1500
- AllocatorWithCleanup() {}
- template <class U, bool A> AllocatorWithCleanup(const AllocatorWithCleanup<U, A> &) {}
-#endif
-};
-
-CRYPTOPP_DLL_TEMPLATE_CLASS AllocatorWithCleanup<byte>;
-CRYPTOPP_DLL_TEMPLATE_CLASS AllocatorWithCleanup<word16>;
-CRYPTOPP_DLL_TEMPLATE_CLASS AllocatorWithCleanup<word32>;
-CRYPTOPP_DLL_TEMPLATE_CLASS AllocatorWithCleanup<word64>;
-#if CRYPTOPP_BOOL_X86
-CRYPTOPP_DLL_TEMPLATE_CLASS AllocatorWithCleanup<word, true>; // for Integer
-#endif
-
-template <class T>
-class NullAllocator : public AllocatorBase<T>
-{
-public:
- CRYPTOPP_INHERIT_ALLOCATOR_TYPES
-
- pointer allocate(size_type n, const void * = NULL)
- {
- assert(false);
- return NULL;
- }
-
- void deallocate(void *p, size_type n)
- {
- assert(false);
- }
-
- size_type max_size() const {return 0;}
-};
-
-// This allocator can't be used with standard collections because
-// they require that all objects of the same allocator type are equivalent.
-// So this is for use with SecBlock only.
-template <class T, size_t S, class A = NullAllocator<T>, bool T_Align16 = false>
-class FixedSizeAllocatorWithCleanup : public AllocatorBase<T>
-{
-public:
- CRYPTOPP_INHERIT_ALLOCATOR_TYPES
-
- FixedSizeAllocatorWithCleanup() : m_allocated(false) {}
-
- pointer allocate(size_type n)
- {
- assert(IsAlignedOn(m_array, 8));
-
- if (n <= S && !m_allocated)
- {
- m_allocated = true;
- return GetAlignedArray();
- }
- else
- return m_fallbackAllocator.allocate(n);
- }
-
- pointer allocate(size_type n, const void *hint)
- {
- if (n <= S && !m_allocated)
- {
- m_allocated = true;
- return GetAlignedArray();
- }
- else
- return m_fallbackAllocator.allocate(n, hint);
- }
-
- void deallocate(void *p, size_type n)
- {
- if (p == GetAlignedArray())
- {
- assert(n <= S);
- assert(m_allocated);
- m_allocated = false;
- SecureWipeArray((pointer)p, n);
- }
- else
- m_fallbackAllocator.deallocate(p, n);
- }
-
- pointer reallocate(pointer p, size_type oldSize, size_type newSize, bool preserve)
- {
- if (p == GetAlignedArray() && newSize <= S)
- {
- assert(oldSize <= S);
- if (oldSize > newSize)
- SecureWipeArray(p+newSize, oldSize-newSize);
- return p;
- }
-
- pointer newPointer = allocate(newSize, NULL);
- if (preserve)
- memcpy(newPointer, p, sizeof(T)*STDMIN(oldSize, newSize));
- deallocate(p, oldSize);
- return newPointer;
- }
-
- size_type max_size() const {return STDMAX(m_fallbackAllocator.max_size(), S);}
-
-private:
-#ifdef __BORLANDC__
- T* GetAlignedArray() {return m_array;}
- T m_array[S];
-#else
- T* GetAlignedArray() {return (CRYPTOPP_BOOL_ALIGN16_ENABLED && T_Align16) ? (T*)(((byte *)m_array) + (0-(size_t)m_array)%16) : m_array;}
- CRYPTOPP_ALIGN_DATA(8) T m_array[(CRYPTOPP_BOOL_ALIGN16_ENABLED && T_Align16) ? S+8/sizeof(T) : S];
-#endif
- A m_fallbackAllocator;
- bool m_allocated;
-};
-
-//! a block of memory allocated using A
-template <class T, class A = AllocatorWithCleanup<T> >
-class SecBlock
-{
-public:
- typedef typename A::value_type value_type;
- typedef typename A::pointer iterator;
- typedef typename A::const_pointer const_iterator;
- typedef typename A::size_type size_type;
-
- explicit SecBlock(size_type size=0)
- : m_size(size) {m_ptr = m_alloc.allocate(size, NULL);}
- SecBlock(const SecBlock<T, A> &t)
- : m_size(t.m_size) {m_ptr = m_alloc.allocate(m_size, NULL); memcpy_s(m_ptr, m_size*sizeof(T), t.m_ptr, m_size*sizeof(T));}
- SecBlock(const T *t, size_type len)
- : m_size(len)
- {
- m_ptr = m_alloc.allocate(len, NULL);
- if (t == NULL)
- memset_z(m_ptr, 0, len*sizeof(T));
- else
- memcpy(m_ptr, t, len*sizeof(T));
- }
-
- ~SecBlock()
- {m_alloc.deallocate(m_ptr, m_size);}
-
-#ifdef __BORLANDC__
- operator T *() const
- {return (T*)m_ptr;}
-#else
- operator const void *() const
- {return m_ptr;}
- operator void *()
- {return m_ptr;}
-
- operator const T *() const
- {return m_ptr;}
- operator T *()
- {return m_ptr;}
-#endif
-
-// T *operator +(size_type offset)
-// {return m_ptr+offset;}
-
-// const T *operator +(size_type offset) const
-// {return m_ptr+offset;}
-
-// T& operator[](size_type index)
-// {assert(index >= 0 && index < m_size); return m_ptr[index];}
-
-// const T& operator[](size_type index) const
-// {assert(index >= 0 && index < m_size); return m_ptr[index];}
-
- iterator begin()
- {return m_ptr;}
- const_iterator begin() const
- {return m_ptr;}
- iterator end()
- {return m_ptr+m_size;}
- const_iterator end() const
- {return m_ptr+m_size;}
-
- typename A::pointer data() {return m_ptr;}
- typename A::const_pointer data() const {return m_ptr;}
-
- size_type size() const {return m_size;}
- bool empty() const {return m_size == 0;}
-
- byte * BytePtr() {return (byte *)m_ptr;}
- const byte * BytePtr() const {return (const byte *)m_ptr;}
- size_type SizeInBytes() const {return m_size*sizeof(T);}
-
- //! set contents and size
- void Assign(const T *t, size_type len)
- {
- New(len);
- memcpy_s(m_ptr, m_size*sizeof(T), t, len*sizeof(T));
- }
-
- //! copy contents and size from another SecBlock
- void Assign(const SecBlock<T, A> &t)
- {
- if (this != &t)
- {
- New(t.m_size);
- memcpy_s(m_ptr, m_size*sizeof(T), t.m_ptr, m_size*sizeof(T));
- }
- }
-
- SecBlock<T, A>& operator=(const SecBlock<T, A> &t)
- {
- Assign(t);
- return *this;
- }
-
- // append to this object
- SecBlock<T, A>& operator+=(const SecBlock<T, A> &t)
- {
- size_type oldSize = m_size;
- Grow(m_size+t.m_size);
- memcpy_s(m_ptr+oldSize, m_size*sizeof(T), t.m_ptr, t.m_size*sizeof(T));
- return *this;
- }
-
- // append operator
- SecBlock<T, A> operator+(const SecBlock<T, A> &t)
- {
- SecBlock<T, A> result(m_size+t.m_size);
- memcpy_s(result.m_ptr, result.m_size*sizeof(T), m_ptr, m_size*sizeof(T));
- memcpy_s(result.m_ptr+m_size, t.m_size*sizeof(T), t.m_ptr, t.m_size*sizeof(T));
- return result;
- }
-
- bool operator==(const SecBlock<T, A> &t) const
- {
- return m_size == t.m_size && VerifyBufsEqual(m_ptr, t.m_ptr, m_size*sizeof(T));
- }
-
- bool operator!=(const SecBlock<T, A> &t) const
- {
- return !operator==(t);
- }
-
- //! change size, without preserving contents
- void New(size_type newSize)
- {
- m_ptr = m_alloc.reallocate(m_ptr, m_size, newSize, false);
- m_size = newSize;
- }
-
- //! change size and set contents to 0
- void CleanNew(size_type newSize)
- {
- New(newSize);
- memset_z(m_ptr, 0, m_size*sizeof(T));
- }
-
- //! change size only if newSize > current size. contents are preserved
- void Grow(size_type newSize)
- {
- if (newSize > m_size)
- {
- m_ptr = m_alloc.reallocate(m_ptr, m_size, newSize, true);
- m_size = newSize;
- }
- }
-
- //! change size only if newSize > current size. contents are preserved and additional area is set to 0
- void CleanGrow(size_type newSize)
- {
- if (newSize > m_size)
- {
- m_ptr = m_alloc.reallocate(m_ptr, m_size, newSize, true);
- memset(m_ptr+m_size, 0, (newSize-m_size)*sizeof(T));
- m_size = newSize;
- }
- }
-
- //! change size and preserve contents
- void resize(size_type newSize)
- {
- m_ptr = m_alloc.reallocate(m_ptr, m_size, newSize, true);
- m_size = newSize;
- }
-
- //! swap contents and size with another SecBlock
- void swap(SecBlock<T, A> &b)
- {
- std::swap(m_alloc, b.m_alloc);
- std::swap(m_size, b.m_size);
- std::swap(m_ptr, b.m_ptr);
- }
-
-//private:
- A m_alloc;
- size_type m_size;
- T *m_ptr;
-};
-
-typedef SecBlock<byte> SecByteBlock;
-typedef SecBlock<byte, AllocatorWithCleanup<byte, true> > AlignedSecByteBlock;
-typedef SecBlock<word> SecWordBlock;
-
-//! a SecBlock with fixed size, allocated statically
-template <class T, unsigned int S, class A = FixedSizeAllocatorWithCleanup<T, S> >
-class FixedSizeSecBlock : public SecBlock<T, A>
-{
-public:
- explicit FixedSizeSecBlock() : SecBlock<T, A>(S) {}
-};
-
-template <class T, unsigned int S, bool T_Align16 = true>
-class FixedSizeAlignedSecBlock : public FixedSizeSecBlock<T, S, FixedSizeAllocatorWithCleanup<T, S, NullAllocator<T>, T_Align16> >
-{
-};
-
-//! a SecBlock that preallocates size S statically, and uses the heap when this size is exceeded
-template <class T, unsigned int S, class A = FixedSizeAllocatorWithCleanup<T, S, AllocatorWithCleanup<T> > >
-class SecBlockWithHint : public SecBlock<T, A>
-{
-public:
- explicit SecBlockWithHint(size_t size) : SecBlock<T, A>(size) {}
-};
-
-template<class T, bool A, class U, bool B>
-inline bool operator==(const CryptoPP::AllocatorWithCleanup<T, A>&, const CryptoPP::AllocatorWithCleanup<U, B>&) {return (true);}
-template<class T, bool A, class U, bool B>
-inline bool operator!=(const CryptoPP::AllocatorWithCleanup<T, A>&, const CryptoPP::AllocatorWithCleanup<U, B>&) {return (false);}
-
-NAMESPACE_END
-
-NAMESPACE_BEGIN(std)
-template <class T, class A>
-inline void swap(CryptoPP::SecBlock<T, A> &a, CryptoPP::SecBlock<T, A> &b)
-{
- a.swap(b);
-}
-
-#if defined(_STLP_DONT_SUPPORT_REBIND_MEMBER_TEMPLATE) || (defined(_STLPORT_VERSION) && !defined(_STLP_MEMBER_TEMPLATE_CLASSES))
-// working for STLport 5.1.3 and MSVC 6 SP5
-template <class _Tp1, class _Tp2>
-inline CryptoPP::AllocatorWithCleanup<_Tp2>&
-__stl_alloc_rebind(CryptoPP::AllocatorWithCleanup<_Tp1>& __a, const _Tp2*)
-{
- return (CryptoPP::AllocatorWithCleanup<_Tp2>&)(__a);
-}
-#endif
-
-NAMESPACE_END
-
-#endif