represents a Data packet More...

#include <data.hpp>

Inheritance diagram for ndn::Data:

[legend]

Collaboration diagram for ndn::Data:

Classes
class	Error

Public Member Functions
	Data ()
	Create an empty Data object. More...

	Data (const Name &name)
	Create a new Data object with the given name. More...

	Data (const Block &wire)
	Create a new Data object from wire encoding. More...

template<encoding::Tag TAG>
size_t	wireEncode (EncodingImpl< TAG > &encoder, bool wantUnsignedPortionOnly=false) const
	Fast encoding or block size estimation. More...

const Block &	wireEncode () const
	Encode to a wire format. More...

const Block &	wireEncode (EncodingBuffer &encoder, const Block &signatureValue) const
	Finalize Data packet encoding with the specified SignatureValue. More...

void	wireDecode (const Block &wire)
	Decode from the wire format. More...

bool	hasWire () const
	Check if Data is already has wire encoding. More...

const Name &	getName () const
	Get name of the Data packet. More...

Data &	setName (const Name &name)
	Set name to a copy of the given Name. More...

const Name &	getFullName () const
	Get full name of Data packet, including the implicit digest. More...

const MetaInfo &	getMetaInfo () const
	Get MetaInfo block from Data packet. More...

Data &	setMetaInfo (const MetaInfo &metaInfo)
	Set metaInfo to a copy of the given MetaInfo. More...

uint32_t	getContentType () const

Data &	setContentType (uint32_t type)

const time::milliseconds &	getFreshnessPeriod () const

Data &	setFreshnessPeriod (const time::milliseconds &freshnessPeriod)

const name::Component &	getFinalBlockId () const

Data &	setFinalBlockId (const name::Component &finalBlockId)

const Block &	getContent () const
	Get content Block. More...

Data &	setContent (const uint8_t *buffer, size_t bufferSize)
	Set the content from the buffer (buffer will be copied) More...

Data &	setContent (const Block &block)
	Set the content from the block. More...

Data &	setContent (const ConstBufferPtr &contentValue)
	Set the content from the pointer to immutable buffer. More...

const Signature &	getSignature () const

Data &	setSignature (const Signature &signature)
	Set the signature to a copy of the given signature. More...

Data &	setSignatureValue (const Block &value)

nfd::LocalControlHeader &	getLocalControlHeader ()

const nfd::LocalControlHeader &	getLocalControlHeader () const

uint64_t	getIncomingFaceId () const

Data &	setIncomingFaceId (uint64_t incomingFaceId)

nfd::LocalControlHeader::CachingPolicy	getCachingPolicy () const

Data &	setCachingPolicy (nfd::LocalControlHeader::CachingPolicy cachingPolicy)

bool	operator== (const Data &other) const

bool	operator!= (const Data &other) const

Public Member Functions inherited from ndn::TagHost
template<typename T >
shared_ptr< T >	getTag () const
	get a tag item More...

template<typename T >
void	setTag (shared_ptr< T > tag) const
	set a tag item More...

template<typename T >
void	removeTag () const
	remove tag item More...

Protected Member Functions
void	onChanged ()
	Clear the wire encoding. More...

Friends
class	nfd::LocalControlHeader

Detailed Description

represents a Data packet

Definition at line 39 of file data.hpp.

Constructor & Destructor Documentation

ndn::Data::Data ( )

Create an empty Data object.

Note that in certain contexts that use Data::shared_from_this(), Data must be created using make_shared:

shared_ptr<Data> data = make_shared<Data>();

Otherwise, Data::shared_from_this() will throw an exception.

Definition at line 35 of file data.cpp.

Referenced by ndn::Data::Error::Error().

ndn::Data::Data ( const Name & name )

Create a new Data object with the given name.

Parameters

name	A reference to the name

Note that in certain contexts that use Data::shared_from_this(), Data must be created using make_shared:

shared_ptr<Data> data = make_shared<Data>(name);

Otherwise, Data::shared_from_this() will throw an exception.

Definition at line 40 of file data.cpp.

ndn::Data::Data ( const Block & wire )

explicit

Create a new Data object from wire encoding.

Note that in certain contexts that use Data::shared_from_this(), Data must be created using make_shared:

shared_ptr<Data> data = make_shared<Data>(wire);

Otherwise, Data::shared_from_this() will throw an exception.

Definition at line 45 of file data.cpp.

References wireDecode().

Member Function Documentation

template<encoding::Tag TAG>

size_t ndn::Data::wireEncode	(	EncodingImpl< TAG > &	encoder,
		bool	wantUnsignedPortionOnly = `false`
	)		const

Fast encoding or block size estimation.

Parameters

encoder	EncodingEstimator or EncodingBuffer instance
wantUnsignedPortionOnly	Request only unsigned portion to be encoded in block. If true, only Name, MetaInfo, Content, and SignatureInfo blocks will be encoded into the block. Note that there will be no outer TLV header of the Data packet.

Definition at line 52 of file data.cpp.

References ndn::tlv::Data, getContent(), ndn::Signature::getInfo(), getMetaInfo(), getName(), ndn::Signature::getValue(), ndn::MetaInfo::wireEncode(), and ndn::Name::wireEncode().

Referenced by ndn::SecPublicInfoSqlite3::addCertificate(), ndn::security::PibSqlite3::addCertificate(), ndn::security::KeyChain::importIdentity(), ndn::SecuredBag::SecuredBag(), nfd::MulticastUdpFace::sendData(), nfd::DatagramFace< Protocol, Addressing >::sendData(), nfd::WebSocketFace::sendData(), nfd::EthernetFace::sendData(), ndn::security::KeyChain::signWithSha256(), and ndn::Validator::verifySignature().

const Block & ndn::Data::wireEncode ( ) const

Encode to a wire format.

Definition at line 119 of file data.cpp.

References ndn::Block::hasWire(), and wireDecode().

Referenced by ndn::Link::encodeContent(), and ndn::Data::Error::Error().

const Block & ndn::Data::wireEncode	(	EncodingBuffer &	encoder,
		const Block &	signatureValue
	)		const

Finalize Data packet encoding with the specified SignatureValue.

Parameters

encoder	EncodingBuffer instance, containing Name, MetaInfo, Content, and SignatureInfo (without outer TLV header of the Data packet).
signatureValue	SignatureValue block to be added to Data packet to finalize the wire encoding

This method is intended to be used in concert with Data::wireEncode(EncodingBuffer&, true) method to optimize Data packet wire format creation:

Data data;
...
EncodingBuffer encoder;
data.wireEncode(encoder, true);
...
Block signatureValue = <sign_over_unsigned_portion>(encoder.buf(), encoder.size());
data.wireEncode(encoder, signatureValue)

Definition at line 106 of file data.cpp.

References ndn::tlv::Data, ndn::Block::size(), and wireDecode().

void ndn::Data::wireDecode ( const Block & wire )

Decode from the wire format.

Definition at line 135 of file data.cpp.

References ndn::Name::clear(), ndn::tlv::Content, ndn::Block::elements_end(), ndn::Block::find(), ndn::Block::get(), ndn::tlv::MetaInfo, ndn::tlv::Name, ndn::Block::parse(), ndn::Signature::setInfo(), ndn::Signature::setValue(), ndn::tlv::SignatureInfo, ndn::tlv::SignatureValue, ndn::MetaInfo::wireDecode(), and ndn::Name::wireDecode().

Referenced by Data(), ndn::Data::Error::Error(), ndn::Certificate::wireDecode(), ndn::Link::wireDecode(), and wireEncode().

bool ndn::Data::hasWire ( ) const

inline

Check if Data is already has wire encoding.

Definition at line 337 of file data.hpp.

Referenced by ndn::Data::Error::Error().

const Name & ndn::Data::getName ( ) const

inline

Get name of the Data packet.

Definition at line 343 of file data.hpp.

Referenced by ndn::SecPublicInfoSqlite3::addCertificate(), ndn::security::PibMemory::addCertificate(), ndn::security::PibSqlite3::addCertificate(), ndn::SecPublicInfo::addCertificateAsIdentityDefault(), ndn::SecPublicInfo::addCertificateAsKeyDefault(), ndn::SecPublicInfo::addCertificateAsSystemDefault(), ndn::CommandInterestValidator::addInterestRule(), nfd::fw::AccessStrategy::beforeSatisfyInterest(), nfd::fw::Strategy::beforeSatisfyInterest(), ndn::security::conf::KeyLocatorChecker::check(), ndn::ValidatorRegex::checkPolicy(), nfd::compare_pickInterest(), nfd::cs::compareDataWithData(), nfd::cs::compareQueryWithData(), nfd::rib::RibManager::enableLocalControlHeader(), ndn::Data::Error::Error(), ndn::util::SegmentFetcher::fetch(), nfd::Pit::findAllDataMatches(), ndn::security::Key::getPublicKey(), ndn::security::KeyChain::importIdentity(), nfd::cs::Cs::insert(), ndn::nfd::makeSigningInfoFromIdentityCertificate(), ndn::security::conf::Filter::match(), ndn::SecRuleSpecific::matchDataName(), ndn::SecRuleRelative::matchDataName(), ndn::Interest::matchesData(), ndn::Validator::onData(), ndn::operator<<(), operator==(), ndn::Certificate::printCertificate(), ndn::Face::put(), ndn::Face::registerPrefix(), ndn::security::Key::removeCertificate(), ndn::SecRuleRelative::satisfy(), ndn::security::KeyChain::selfSign(), nfd::Face::Impl::NfdFace::sendData(), ndn::security::Key::setDefaultCertificate(), ndn::Face::setInterestFilter(), ndn::IdentityCertificate::setName(), and wireEncode().

Data & ndn::Data::setName ( const Name & name )

Set name to a copy of the given Name.

Returns: This Data so that you can chain calls to update values

Definition at line 170 of file data.cpp.

References onChanged().

Referenced by ndn::Data::Error::Error(), and ndn::IdentityCertificate::setName().

const Name & ndn::Data::getFullName ( ) const

Get full name of Data packet, including the implicit digest.

Exceptions

Error if Data packet doesn't have a full name yet (wire encoding has not been yet created)

Definition at line 179 of file data.cpp.

References ndn::Name::appendImplicitSha256Digest(), ndn::Name::empty(), ndn::Block::hasWire(), ndn::crypto::sha256(), ndn::Block::size(), and ndn::Block::wire().

Referenced by nfd::cs::compareDataWithData(), nfd::cs::compareQueryWithData(), ndn::Data::Error::Error(), ndn::util::InMemoryStorage::insert(), and ndn::Interest::matchesData().

const MetaInfo & ndn::Data::getMetaInfo ( ) const

inline

Get MetaInfo block from Data packet.

Definition at line 349 of file data.hpp.

Referenced by nfd::rib::RibManager::enableLocalControlHeader(), ndn::Data::Error::Error(), ndn::util::SegmentFetcher::fetch(), ndn::operator<<(), operator==(), and wireEncode().

Data & ndn::Data::setMetaInfo ( const MetaInfo & metaInfo )

Set metaInfo to a copy of the given MetaInfo.

Returns: This Data so that you can chain calls to update values.

Definition at line 194 of file data.cpp.

References onChanged().

Referenced by ndn::Data::Error::Error().

uint32_t ndn::Data::getContentType ( ) const

inline

Definition at line 355 of file data.hpp.

Referenced by ndn::Link::decodeContent(), and ndn::Data::Error::Error().

Data & ndn::Data::setContentType ( uint32_t type )

Definition at line 203 of file data.cpp.

References onChanged(), and ndn::MetaInfo::setType().

Referenced by ndn::Certificate::encode(), ndn::Link::encodeContent(), and ndn::Data::Error::Error().

const time::milliseconds & ndn::Data::getFreshnessPeriod ( ) const

inline

Definition at line 361 of file data.hpp.

Referenced by nfd::compare_pickInterest(), ndn::Data::Error::Error(), and nfd::Forwarder::~Forwarder().

Data & ndn::Data::setFreshnessPeriod ( const time::milliseconds & freshnessPeriod )

Definition at line 212 of file data.cpp.

References onChanged(), and ndn::MetaInfo::setFreshnessPeriod().

Referenced by ndn::Data::Error::Error(), and ndn::IdentityCertificate::IdentityCertificate().

const name::Component & ndn::Data::getFinalBlockId ( ) const

inline

Definition at line 367 of file data.hpp.

Referenced by ndn::Data::Error::Error().

Data & ndn::Data::setFinalBlockId ( const name::Component & finalBlockId )

Definition at line 221 of file data.cpp.

References onChanged(), and ndn::MetaInfo::setFinalBlockId().

Referenced by ndn::Data::Error::Error().

const Block & ndn::Data::getContent ( ) const

Get content Block.

To access content value, one can use value()/value_size() or value_begin()/value_end() methods of the Block class

Definition at line 230 of file data.cpp.

References ndn::tlv::Content, ndn::Block::empty(), ndn::Block::encode(), ndn::Block::hasWire(), and ndn::encoding::makeEmptyBlock().

Referenced by ndn::nfd::Controller::Controller(), ndn::Certificate::decode(), ndn::Link::decodeContent(), nfd::rib::RibManager::enableLocalControlHeader(), ndn::Data::Error::Error(), ndn::util::SegmentFetcher::fetch(), ndn::operator<<(), operator==(), and wireEncode().

Data & ndn::Data::setContent	(	const uint8_t *	buffer,
		size_t	bufferSize
	)

Set the content from the buffer (buffer will be copied)

Parameters

buffer	Pointer to first byte of the buffer
bufferSize	Size of the buffer

Returns: This Data so that you can chain calls to update values.

Definition at line 241 of file data.cpp.

References ndn::tlv::Content, ndn::encoding::makeBinaryBlock(), and onChanged().

Referenced by ndn::Certificate::encode(), ndn::Link::encodeContent(), and ndn::Data::Error::Error().

Data & ndn::Data::setContent ( const Block & block )

Set the content from the block.

Depending on type of the supplied block, there are two cases:

if block.type() == tlv::Content, then block will be used directly as Data packet's content (no extra copying)
if block.type() != tlv::Content, then this method will create a new Block with type tlv::Content and put block as a nested element in the content Block.

Parameters

block The Block containing the content to assign

Returns: This Data so that you can chain calls to update values.

Definition at line 261 of file data.cpp.

References ndn::tlv::Content, onChanged(), and ndn::Block::type().

Data & ndn::Data::setContent ( const ConstBufferPtr & contentValue )

Set the content from the pointer to immutable buffer.

This method will create a Block with tlv::Content and set contentValue as a payload for this block. Note that this method is very different from setContent(const Block&), since it does not require that payload should be a valid TLV element.

Parameters

contentValue The pointer to immutable buffer containing the content to assign