diff options
Diffstat (limited to 'CryptoPP/mqueue.cpp')
| -rw-r--r-- | CryptoPP/mqueue.cpp | 174 |
1 files changed, 0 insertions, 174 deletions
diff --git a/CryptoPP/mqueue.cpp b/CryptoPP/mqueue.cpp deleted file mode 100644 index 1d645d83d..000000000 --- a/CryptoPP/mqueue.cpp +++ /dev/null @@ -1,174 +0,0 @@ -// mqueue.cpp - written and placed in the public domain by Wei Dai - -#include "pch.h" - -#ifndef CRYPTOPP_IMPORTS - -#include "mqueue.h" - -NAMESPACE_BEGIN(CryptoPP) - -MessageQueue::MessageQueue(unsigned int nodeSize) - : m_queue(nodeSize), m_lengths(1, 0U), m_messageCounts(1, 0U) -{ -} - -size_t MessageQueue::CopyRangeTo2(BufferedTransformation &target, lword &begin, lword end, const std::string &channel, bool blocking) const -{ - if (begin >= MaxRetrievable()) - return 0; - - return m_queue.CopyRangeTo2(target, begin, STDMIN(MaxRetrievable(), end), channel, blocking); -} - -size_t MessageQueue::TransferTo2(BufferedTransformation &target, lword &transferBytes, const std::string &channel, bool blocking) -{ - transferBytes = STDMIN(MaxRetrievable(), transferBytes); - size_t blockedBytes = m_queue.TransferTo2(target, transferBytes, channel, blocking); - m_lengths.front() -= transferBytes; - return blockedBytes; -} - -bool MessageQueue::GetNextMessage() -{ - if (NumberOfMessages() > 0 && !AnyRetrievable()) - { - m_lengths.pop_front(); - if (m_messageCounts[0] == 0 && m_messageCounts.size() > 1) - m_messageCounts.pop_front(); - return true; - } - else - return false; -} - -unsigned int MessageQueue::CopyMessagesTo(BufferedTransformation &target, unsigned int count, const std::string &channel) const -{ - ByteQueue::Walker walker(m_queue); - std::deque<lword>::const_iterator it = m_lengths.begin(); - unsigned int i; - for (i=0; i<count && it != --m_lengths.end(); ++i, ++it) - { - walker.TransferTo(target, *it, channel); - if (GetAutoSignalPropagation()) - target.ChannelMessageEnd(channel, GetAutoSignalPropagation()-1); - } - return i; -} - -void MessageQueue::swap(MessageQueue &rhs) -{ - m_queue.swap(rhs.m_queue); - m_lengths.swap(rhs.m_lengths); -} - -const byte * MessageQueue::Spy(size_t &contiguousSize) const -{ - const byte *result = m_queue.Spy(contiguousSize); - contiguousSize = UnsignedMin(contiguousSize, MaxRetrievable()); - return result; -} - -// ************************************************************* - -unsigned int EqualityComparisonFilter::MapChannel(const std::string &channel) const -{ - if (channel == m_firstChannel) - return 0; - else if (channel == m_secondChannel) - return 1; - else - return 2; -} - -size_t EqualityComparisonFilter::ChannelPut2(const std::string &channel, const byte *inString, size_t length, int messageEnd, bool blocking) -{ - if (!blocking) - throw BlockingInputOnly("EqualityComparisonFilter"); - - unsigned int i = MapChannel(channel); - - if (i == 2) - return Output(3, inString, length, messageEnd, blocking, channel); - else if (m_mismatchDetected) - return 0; - else - { - MessageQueue &q1 = m_q[i], &q2 = m_q[1-i]; - - if (q2.AnyMessages() && q2.MaxRetrievable() < length) - goto mismatch; - - while (length > 0 && q2.AnyRetrievable()) - { - size_t len = length; - const byte *data = q2.Spy(len); - len = STDMIN(len, length); - if (memcmp(inString, data, len) != 0) - goto mismatch; - inString += len; - length -= len; - q2.Skip(len); - } - - q1.Put(inString, length); - - if (messageEnd) - { - if (q2.AnyRetrievable()) - goto mismatch; - else if (q2.AnyMessages()) - q2.GetNextMessage(); - else if (q2.NumberOfMessageSeries() > 0) - goto mismatch; - else - q1.MessageEnd(); - } - - return 0; - -mismatch: - return HandleMismatchDetected(blocking); - } -} - -bool EqualityComparisonFilter::ChannelMessageSeriesEnd(const std::string &channel, int propagation, bool blocking) -{ - unsigned int i = MapChannel(channel); - - if (i == 2) - { - OutputMessageSeriesEnd(4, propagation, blocking, channel); - return false; - } - else if (m_mismatchDetected) - return false; - else - { - MessageQueue &q1 = m_q[i], &q2 = m_q[1-i]; - - if (q2.AnyRetrievable() || q2.AnyMessages()) - goto mismatch; - else if (q2.NumberOfMessageSeries() > 0) - return Output(2, (const byte *)"\1", 1, 0, blocking) != 0; - else - q1.MessageSeriesEnd(); - - return false; - -mismatch: - return HandleMismatchDetected(blocking); - } -} - -bool EqualityComparisonFilter::HandleMismatchDetected(bool blocking) -{ - m_mismatchDetected = true; - if (m_throwIfNotEqual) - throw MismatchDetected(); - return Output(1, (const byte *)"\0", 1, 0, blocking) != 0; -} - -NAMESPACE_END - -#endif |