| /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil -*- */ |
| /* |
| * Copyright (c) 2013, Regents of the University of California |
| * |
| * BSD license, See the LICENSE file for more information |
| * |
| * Author: Qiuhan Ding <qiuhanding@cs.ucla.edu> |
| */ |
| |
| #include "endorse-extension.hpp" |
| |
| namespace chronochat { |
| |
| BOOST_CONCEPT_ASSERT((ndn::WireEncodable<EndorseExtension>)); |
| BOOST_CONCEPT_ASSERT((ndn::WireDecodable<EndorseExtension>)); |
| |
| EndorseExtension::EndorseExtension() |
| { |
| } |
| |
| EndorseExtension::EndorseExtension(const Block& endorseWire) |
| { |
| this->wireDecode(endorseWire); |
| } |
| |
| template<ndn::encoding::Tag T> |
| size_t |
| EndorseExtension::wireEncode(ndn::EncodingImpl<T>& block) const |
| { |
| size_t totalLength = 0; |
| |
| // EndorseExtension := ENDORSE-EXTENSION-TYPE TLV-LENGTH |
| // EntryData+ |
| // |
| // EntryData := ENTRYDATA-TYPE TLV-LENGTH |
| // String |
| // |
| |
| // EntryData |
| for (std::list<std::string>::const_reverse_iterator it = m_entries.rbegin(); |
| it != m_entries.rend(); it++) { |
| const uint8_t *entryWire = reinterpret_cast<const uint8_t*>(it->c_str()); |
| totalLength += block.prependByteArrayBlock(tlv::EntryData, entryWire, it->length()); |
| } |
| |
| // EndorseExtension |
| totalLength += block.prependVarNumber(totalLength); |
| totalLength += block.prependVarNumber(tlv::EndorseExtension); |
| |
| return totalLength; |
| } |
| |
| const Block& |
| EndorseExtension::wireEncode() const |
| { |
| ndn::EncodingEstimator estimator; |
| size_t estimatedSize = wireEncode(estimator); |
| |
| ndn::EncodingBuffer buffer(estimatedSize, 0); |
| wireEncode(buffer); |
| |
| m_wire = buffer.block(); |
| m_wire.parse(); |
| |
| return m_wire; |
| } |
| |
| void |
| EndorseExtension::wireDecode(const Block& endorseWire) |
| { |
| m_wire = endorseWire; |
| m_wire.parse(); |
| |
| // EndorseExtension := ENDORSE-EXTENSION-TYPE TLV-LENGTH |
| // EntryData+ |
| // |
| // EntryData := ENTRYDATA-TYPE TLV-LENGTH |
| // String |
| // |
| |
| if (m_wire.type() != tlv::EndorseExtension) |
| throw Error("Unexpected TLV number when decoding endorse extension packet"); |
| |
| // EntryData |
| Block::element_const_iterator i = m_wire.elements_begin(); |
| if (i == m_wire.elements_end()) |
| throw Error("Missing Entry Data"); |
| if (i->type() != tlv::EntryData) |
| throw Error("Expect Entry Data but get TLV Type " + std::to_string(i->type())); |
| |
| while (i != m_wire.elements_end() && i->type() == tlv::EntryData) { |
| m_entries.push_back(std::string(reinterpret_cast<const char* >(i->value()), |
| i->value_size())); |
| ++i; |
| } |
| |
| if (i != m_wire.elements_end()) { |
| throw Error("Unexpected element"); |
| } |
| } |
| |
| void |
| EndorseExtension::addEntry(const std::string& entry) |
| { |
| if (find(m_entries.begin(), m_entries.end(), entry) == m_entries.end()) { |
| m_entries.push_back(entry); |
| } |
| } |
| |
| void |
| EndorseExtension::removeEntry(const std::string& entry) |
| { |
| m_entries.remove(entry); |
| } |
| |
| } // namespace chronochat |