summaryrefslogtreecommitdiffstats
path: root/CryptoPP/mqueue.h
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--CryptoPP/mqueue.h100
1 files changed, 100 insertions, 0 deletions
diff --git a/CryptoPP/mqueue.h b/CryptoPP/mqueue.h
new file mode 100644
index 000000000..efa57a7cf
--- /dev/null
+++ b/CryptoPP/mqueue.h
@@ -0,0 +1,100 @@
+#ifndef CRYPTOPP_MQUEUE_H
+#define CRYPTOPP_MQUEUE_H
+
+#include "queue.h"
+#include "filters.h"
+#include <deque>
+
+NAMESPACE_BEGIN(CryptoPP)
+
+//! Message Queue
+class CRYPTOPP_DLL MessageQueue : public AutoSignaling<BufferedTransformation>
+{
+public:
+ MessageQueue(unsigned int nodeSize=256);
+
+ void IsolatedInitialize(const NameValuePairs &parameters)
+ {m_queue.IsolatedInitialize(parameters); m_lengths.assign(1, 0U); m_messageCounts.assign(1, 0U);}
+ size_t Put2(const byte *begin, size_t length, int messageEnd, bool blocking)
+ {
+ m_queue.Put(begin, length);
+ m_lengths.back() += length;
+ if (messageEnd)
+ {
+ m_lengths.push_back(0);
+ m_messageCounts.back()++;
+ }
+ return 0;
+ }
+ bool IsolatedFlush(bool hardFlush, bool blocking) {return false;}
+ bool IsolatedMessageSeriesEnd(bool blocking)
+ {m_messageCounts.push_back(0); return false;}
+
+ lword MaxRetrievable() const
+ {return m_lengths.front();}
+ bool AnyRetrievable() const
+ {return m_lengths.front() > 0;}
+
+ size_t TransferTo2(BufferedTransformation &target, lword &transferBytes, const std::string &channel=DEFAULT_CHANNEL, bool blocking=true);
+ size_t CopyRangeTo2(BufferedTransformation &target, lword &begin, lword end=LWORD_MAX, const std::string &channel=DEFAULT_CHANNEL, bool blocking=true) const;
+
+ lword TotalBytesRetrievable() const
+ {return m_queue.MaxRetrievable();}
+ unsigned int NumberOfMessages() const
+ {return (unsigned int)m_lengths.size()-1;}
+ bool GetNextMessage();
+
+ unsigned int NumberOfMessagesInThisSeries() const
+ {return m_messageCounts[0];}
+ unsigned int NumberOfMessageSeries() const
+ {return (unsigned int)m_messageCounts.size()-1;}
+
+ unsigned int CopyMessagesTo(BufferedTransformation &target, unsigned int count=UINT_MAX, const std::string &channel=DEFAULT_CHANNEL) const;
+
+ const byte * Spy(size_t &contiguousSize) const;
+
+ void swap(MessageQueue &rhs);
+
+private:
+ ByteQueue m_queue;
+ std::deque<lword> m_lengths;
+ std::deque<unsigned int> m_messageCounts;
+};
+
+
+//! A filter that checks messages on two channels for equality
+class CRYPTOPP_DLL EqualityComparisonFilter : public Unflushable<Multichannel<Filter> >
+{
+public:
+ struct MismatchDetected : public Exception {MismatchDetected() : Exception(DATA_INTEGRITY_CHECK_FAILED, "EqualityComparisonFilter: did not receive the same data on two channels") {}};
+
+ /*! if throwIfNotEqual is false, this filter will output a '\\0' byte when it detects a mismatch, '\\1' otherwise */
+ EqualityComparisonFilter(BufferedTransformation *attachment=NULL, bool throwIfNotEqual=true, const std::string &firstChannel="0", const std::string &secondChannel="1")
+ : m_throwIfNotEqual(throwIfNotEqual), m_mismatchDetected(false)
+ , m_firstChannel(firstChannel), m_secondChannel(secondChannel)
+ {Detach(attachment);}
+
+ size_t ChannelPut2(const std::string &channel, const byte *begin, size_t length, int messageEnd, bool blocking);
+ bool ChannelMessageSeriesEnd(const std::string &channel, int propagation=-1, bool blocking=true);
+
+private:
+ unsigned int MapChannel(const std::string &channel) const;
+ bool HandleMismatchDetected(bool blocking);
+
+ bool m_throwIfNotEqual, m_mismatchDetected;
+ std::string m_firstChannel, m_secondChannel;
+ MessageQueue m_q[2];
+};
+
+NAMESPACE_END
+
+#ifndef __BORLANDC__
+NAMESPACE_BEGIN(std)
+template<> inline void swap(CryptoPP::MessageQueue &a, CryptoPP::MessageQueue &b)
+{
+ a.swap(b);
+}
+NAMESPACE_END
+#endif
+
+#endif