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 Go to latest Published: Dec 4, 2020 License: Apache-2.0 Imports: 22 Imported by: 0

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Constants

This section is empty.

Variables

This section is empty.

Functions

func AllAllowedNetworkObjects 

func AllAllowedNetworkObjects() []object.Object

AllAllowedNetworkObjects returns a list of objects that are allowed for network subjectAddresses; with valid content

func AllObjectType 

func AllObjectType() []object.Type

Allobject.Types returns all object types

func AllQueryOptions 

func AllQueryOptions() []query.Option

AllQueryOptions returns all query options

func GetQuery 

func GetQuery() *query.Name

GetQuery returns a query with all query options set and querying all types.

func Intersect 

func Intersect(a, b Interval) bool

Intersect returns true if a and b are overlapping

func Signature 

func Signature() signature.Sig

Signature returns a signature object with all fields set except signature data.

func UpdateValidity 

func UpdateValidity(validSince, validUntil, oldValidSince, oldValidUntil int64,
	maxValidity time.Duration) (int64, int64)

Types

type Assertion 

type Assertion struct {
	Signatures  []signature.Sig
	SubjectName string
	SubjectZone string
	Context     string
	Content     []object.Object
	// contains filtered or unexported fields
}

Assertion contains information about the assertion.

func GetAssertion 

func GetAssertion() *Assertion

GetAssertion returns an assertion containing all objects types that is valid.

func (*Assertion) AddSig 

func (a *Assertion) AddSig(sig signature.Sig)

AddSig adds the given signature

func (*Assertion) AddSigInMarshaller 

func (a *Assertion) AddSigInMarshaller()

func (*Assertion) AllSigs 

func (a *Assertion) AllSigs() []signature.Sig

AllSigs returns all assertion's signatures

func (*Assertion) Begin 

func (a *Assertion) Begin() string

Begin returns the begining of the interval of this assertion.

func (*Assertion) CompareTo 

func (a *Assertion) CompareTo(assertion *Assertion) int

CompareTo compares two assertions and returns 0 if they are equal, 1 if a is greater than assertion and -1 if a is smaller than assertion

func (*Assertion) Copy 

func (a *Assertion) Copy(context, subjectZone string) *Assertion

Copy creates a copy of the assertion with the given context and subjectZone values

func (*Assertion) DeleteAllSigs 

func (a *Assertion) DeleteAllSigs()

DeleteAllSigs deletes all signature

func (*Assertion) DeleteSig 

func (a *Assertion) DeleteSig(i int)

DeleteSig deletes ith signature

func (*Assertion) DontAddSigInMarshaller 

func (a *Assertion) DontAddSigInMarshaller()

func (*Assertion) End 

func (a *Assertion) End() string

End returns the end of the interval of this assertion.

func (*Assertion) EqualContextZoneName 

func (a *Assertion) EqualContextZoneName(assertion *Assertion) bool

EqualContextZoneName return true if the given assertion has the same context, subjectZone, subjectName.

func (*Assertion) FQDN 

func (a *Assertion) FQDN() string

FQDN returns the fully qualified domain name of this assertion

func (*Assertion) GetContext 

func (a *Assertion) GetContext() string

GetContext returns the context of the assertion

func (*Assertion) GetSubjectZone 

func (a *Assertion) GetSubjectZone() string

GetSubjectZone returns the zone of the assertion

func (*Assertion) Hash 

func (a *Assertion) Hash() string

Hash returns a string containing all information uniquely identifying an assertion.

func (*Assertion) IsConsistent 

func (a *Assertion) IsConsistent() bool

IsConsistent returns true. Assertion is always consistent.

func (*Assertion) MarshalCBOR 

func (a *Assertion) MarshalCBOR(w *cbor.CBORWriter) error

MarshalCBOR implements the CBORMarshaler interface.

func (*Assertion) NeededKeys 

func (a *Assertion) NeededKeys(keysNeeded map[signature.MetaData]bool)

NeededKeys adds to keysNeeded key meta data which is necessary to verify all a's signatures.

func (*Assertion) RemoveContextAndSubjectZone 

func (a *Assertion) RemoveContextAndSubjectZone()

func (*Assertion) SetContext 

func (a *Assertion) SetContext(ctx string)

func (*Assertion) SetSubjectZone 

func (a *Assertion) SetSubjectZone(zone string)

func (*Assertion) SetValidSince 

func (a *Assertion) SetValidSince(validSince int64)

SetValidSince sets the validSince time

func (*Assertion) SetValidUntil 

func (a *Assertion) SetValidUntil(validUntil int64)

SetValidUntil sets the validUntil time

func (*Assertion) Sigs 

func (a *Assertion) Sigs(keySpace keys.KeySpaceID) []signature.Sig

Sigs returns a's signatures in keyspace

func (*Assertion) Sort 

func (a *Assertion) Sort()

Sort sorts the content of the assertion lexicographically.

func (*Assertion) String 

func (a *Assertion) String() string

String implements Stringer interface

func (*Assertion) UnmarshalMap 

func (a *Assertion) UnmarshalMap(m map[int]interface{}) error

UnmarshalMap provides functionality to unmarshal a map read in by CBOR.

func (*Assertion) UpdateValidity 

func (a *Assertion) UpdateValidity(validSince, validUntil int64, maxValidity time.Duration)

UpdateValidity updates the validity of this assertion if the validity period is extended. It makes sure that the validity is never larger than maxValidity

func (*Assertion) ValidSince 

func (a *Assertion) ValidSince() int64

ValidSince returns the earliest validSince date of all contained signatures

func (*Assertion) ValidUntil 

func (a *Assertion) ValidUntil() int64

ValidUntil returns the latest validUntil date of all contained signatures

type BloomFilter 

type BloomFilter struct {
	Algorithm BloomFilterAlgo
	Hash      algorithmTypes.Hash
	Filter    bitarray.BitArray
}

BloomFilter is a probabilistic datastructure for membership queries.

func GetBloomFilter 

func GetBloomFilter() BloomFilter

Datastructure returns a datastructure object with valid content

func (BloomFilter) Add 

func (b BloomFilter) Add(name, zone, context string, t object.Type) error

Add sets the corresponding bits to 1 in the bloom filter based on BloomFilterAlgo and the hash function defined in b.

func (BloomFilter) CompareTo 

func (b BloomFilter) CompareTo(bloomFilter BloomFilter) int

CompareTo compares two BloomFilters and returns 0 if they are equal, 1 if b is greater than bloomFilter and -1 if b is smaller than bloomFilter

func (BloomFilter) Contains 

func (b BloomFilter) Contains(name, zone, context string, t object.Type) (bool, error)

Contains returns true if a might be part of the set represented by the bloom filter. It returns false if a is certainly not part of the set.

func (BloomFilter) MarshalCBOR 

func (b BloomFilter) MarshalCBOR(w *cbor.CBORWriter) error

MarshalCBOR implements a CBORMarshaler.

func (*BloomFilter) UnmarshalArray 

func (b *BloomFilter) UnmarshalArray(in []interface{}) error

UnmarshalArray takes in a CBOR decoded array and populates the object.

type BloomFilterAlgo 

type BloomFilterAlgo int

BloomFilterAlgo enumerates several ways how to add an assertion to the bloom filter. 

const (
	BloomKM12 BloomFilterAlgo = iota + 1
	BloomKM16
	BloomKM20
	BloomKM24
)

func (BloomFilterAlgo) MarshalJSON 

func (r BloomFilterAlgo) MarshalJSON() ([]byte, error)

MarshalJSON is generated so BloomFilterAlgo satisfies json.Marshaler.

func (BloomFilterAlgo) NumberOfHashes 

func (b BloomFilterAlgo) NumberOfHashes() int

NumberOfHashes determines how many bits in the bloom filter are set in an addition and checked on a lookup.

func (BloomFilterAlgo) String 

func (i BloomFilterAlgo) String() string

func (*BloomFilterAlgo) UnmarshalJSON 

func (r *BloomFilterAlgo) UnmarshalJSON(data []byte) error

UnmarshalJSON is generated so BloomFilterAlgo satisfies json.Unmarshaler.

type Hasher 

type Hasher interface {
	//Hash must return a string uniquely identifying the object
	//It must hold for all objects that o1 == o2 iff o1.Hash() == o2.Hash()
	Hash() string
}

Hasher can be implemented by objects that are not natively hashable. For an object to be a map key (or a part thereof), it must be hashable.

type Interval 

type Interval interface {
	//Begin of the interval
	Begin() string
	//End of the interval
	End() string
}

Interval defines an interval over strings

type Notification 

type Notification struct {
	Token token.Token
	Type  NotificationType
	Data  string
}

Notification contains information about the notification

func GetNotification 

func GetNotification() *Notification

Notification returns a notification with all fields set

func NotificationNoData 

func NotificationNoData() *Notification

NotificationNoData returns a notification with all fields set except data.

func (*Notification) CompareTo 

func (n *Notification) CompareTo(notification *Notification) int

CompareTo compares two notifications and returns 0 if they are equal, 1 if n is greater than notification and -1 if n is smaller than notification

func (*Notification) MarshalCBOR 

func (n *Notification) MarshalCBOR(w *cbor.CBORWriter) error

MarshalCBOR implements the CBORMarshaler interface.

func (*Notification) Sort 

func (n *Notification) Sort()

Sort sorts the content of the notification lexicographically.

func (*Notification) String 

func (n *Notification) String() string

String implements Stringer interface

func (*Notification) UnmarshalMap 

func (n *Notification) UnmarshalMap(m map[int]interface{}) error

UnmarshalMap unpacks a CBOR unmarshaled map to this object.

type NotificationType 

type NotificationType int

NotificationType defines the type of a notification section 

const (
	NTHeartbeat          NotificationType = 100
	NTCapHashNotKnown    NotificationType = 399
	NTBadMessage         NotificationType = 400
	NTRcvInconsistentMsg NotificationType = 403
	NTNoAssertionsExist  NotificationType = 404
	NTMsgTooLarge        NotificationType = 413
	NTUnspecServerErr    NotificationType = 500
	NTServerNotCapable   NotificationType = 501
	NTNoAssertionAvail   NotificationType = 504
)

func (NotificationType) String 

func (i NotificationType) String() string

type Pshard 

type Pshard struct {
	Signatures  []signature.Sig
	SubjectZone string
	Context     string
	RangeFrom   string
	RangeTo     string
	BloomFilter BloomFilter
	// contains filtered or unexported fields
}

Pshard contains information about a pshard

func GetPshard 

func GetPshard() *Pshard

GetPshard returns a shard containing an assertion with all object types that is valid.

func (*Pshard) AddAssertion 

func (s *Pshard) AddAssertion(a *Assertion) error

AddAssertion adds a to the s' Bloom filter. An error is returned, if a is not within s' range or if they have a different context or zone.

func (*Pshard) AddSig 

func (s *Pshard) AddSig(sig signature.Sig)

AddSig adds the given signature

func (*Pshard) AddSigInMarshaller 

func (s *Pshard) AddSigInMarshaller()

func (*Pshard) AllSigs 

func (s *Pshard) AllSigs() []signature.Sig

AllSigs returns the pshard's signatures

func (*Pshard) Begin 

func (s *Pshard) Begin() string

Begin returns the begining of the interval of this pshard.

func (*Pshard) CompareTo 

func (s *Pshard) CompareTo(pshard *Pshard) int

CompareTo compares two pshards and returns 0 if they are equal, 1 if s is greater than pshard and -1 if s is smaller than pshard

func (*Pshard) Copy 

func (s *Pshard) Copy(context, subjectZone string) *Pshard

Copy creates a copy of the shard with the given context and subjectZone values. The contained assertions are not modified

func (*Pshard) DeleteAllSigs 

func (s *Pshard) DeleteAllSigs()

DeleteAllSigs deletes all signature

func (*Pshard) DeleteSig 

func (s *Pshard) DeleteSig(i int)

DeleteSig deletes ith signature

func (*Pshard) DontAddSigInMarshaller 

func (s *Pshard) DontAddSigInMarshaller()

func (*Pshard) End 

func (s *Pshard) End() string

End returns the end of the interval of this pshard.

func (*Pshard) GetContext 

func (s *Pshard) GetContext() string

GetContext returns the context of the pshard

func (*Pshard) GetSubjectZone 

func (s *Pshard) GetSubjectZone() string

GetSubjectZone returns the zone of the pshard

func (*Pshard) Hash 

func (s *Pshard) Hash() string

Hash returns a string containing all information uniquely identifying a pshard.

func (*Pshard) InRange 

func (s *Pshard) InRange(subjectName string) bool

InRange returns true if subjectName is inside the shard range

func (*Pshard) IsConsistent 

func (s *Pshard) IsConsistent() bool

IsConsistent returns true if all contained assertions have no subjectZone and context and are within the shards range.

func (*Pshard) IsNonexistent 

func (s *Pshard) IsNonexistent(q *query.Name) (bool, error)

IsNonexistent returns true if all types of q do not exist. An error is returned, when q is not within the pshard's range or if its context and zone does not match the pshard.

func (*Pshard) MarshalCBOR 

func (s *Pshard) MarshalCBOR(w *cbor.CBORWriter) error

func (*Pshard) NeededKeys 

func (s *Pshard) NeededKeys(keysNeeded map[signature.MetaData]bool)

NeededKeys adds to keysNeeded key meta data which is necessary to verify all s's signatures.

func (*Pshard) SetValidSince 

func (s *Pshard) SetValidSince(validSince int64)

SetValidSince sets the validSince time

func (*Pshard) SetValidUntil 

func (s *Pshard) SetValidUntil(validUntil int64)

SetValidUntil sets the validUntil time

func (*Pshard) Sigs 

func (s *Pshard) Sigs(keySpace keys.KeySpaceID) []signature.Sig

Sigs returns s's signatures in keyspace

func (*Pshard) Sort 

func (s *Pshard) Sort()

Sort sorts the content of the pshard lexicographically.

func (*Pshard) String 

func (s *Pshard) String() string

String implements Stringer interface

func (*Pshard) UnmarshalMap 

func (s *Pshard) UnmarshalMap(m map[int]interface{}) error

UnmarshalMap decodes the output from the CBOR decoder into this struct.

func (*Pshard) UpdateValidity 

func (s *Pshard) UpdateValidity(validSince, validUntil int64, maxValidity time.Duration)

UpdateValidity updates the validity of this pshard if the validity period is extended. It makes sure that the validity is never larger than maxValidity

func (*Pshard) ValidSince 

func (s *Pshard) ValidSince() int64

ValidSince returns the earliest validSince date of all contained signatures

func (*Pshard) ValidUntil 

func (s *Pshard) ValidUntil() int64

ValidUntil returns the latest validUntil date of all contained signatures

type Query 

type Query interface {
	GetContext() string
	GetExpiration() int64
}

Query is the interface for a query section. In the current implementation it can be a query or an addressQuery

type Section 

type Section interface {
	Sort()
	String() string
	MarshalCBOR(w *cbor.CBORWriter) error
	UnmarshalMap(m map[int]interface{}) error
}

Section can be either an Assertion, Shard, Zone, Query, Notification, AddressAssertion, AddressZone, AddressQuery section

type Shard 

type Shard struct {
	Signatures  []signature.Sig
	SubjectZone string
	Context     string
	RangeFrom   string
	RangeTo     string
	Content     []*Assertion
	// contains filtered or unexported fields
}

Shard contains information about the shard

func GetShard 

func GetShard() *Shard

GetShard returns a shard containing an assertion with all object types that is valid.

func (*Shard) AddCtxAndZoneToContent 

func (s *Shard) AddCtxAndZoneToContent()

func (*Shard) AddSig 

func (s *Shard) AddSig(sig signature.Sig)

AddSig adds the given signature

func (*Shard) AddSigInMarshaller 

func (s *Shard) AddSigInMarshaller()

func (*Shard) AllSigs 

func (s *Shard) AllSigs() []signature.Sig

AllSigs returns the shard's signatures

func (*Shard) Begin 

func (s *Shard) Begin() string

Begin returns the begining of the interval of this shard.

func (*Shard) CompareTo 

func (s *Shard) CompareTo(shard *Shard) int

CompareTo compares two shards and returns 0 if they are equal, 1 if s is greater than shard and -1 if s is smaller than shard

func (*Shard) Copy 

func (s *Shard) Copy(context, subjectZone string) *Shard

Copy creates a copy of the shard with the given context and subjectZone values. The contained assertions are not modified

func (*Shard) DeleteAllSigs 

func (s *Shard) DeleteAllSigs()

DeleteAllSigs deletes all signature

func (*Shard) DeleteSig 

func (s *Shard) DeleteSig(i int)

DeleteSig deletes ith signature

func (*Shard) DontAddSigInMarshaller 

func (s *Shard) DontAddSigInMarshaller()

func (*Shard) End 

func (s *Shard) End() string

End returns the end of the interval of this shard.

func (*Shard) GetContext 

func (s *Shard) GetContext() string

GetContext returns the context of the shard

func (*Shard) GetSubjectZone 

func (s *Shard) GetSubjectZone() string

GetSubjectZone returns the zone of the shard

func (*Shard) Hash 

func (s *Shard) Hash() string

Hash returns a string containing all information uniquely identifying a shard.

func (*Shard) InRange 

func (s *Shard) InRange(subjectName string) bool

InRange returns true if subjectName is inside the shard range

func (*Shard) IsConsistent 

func (s *Shard) IsConsistent() bool

IsConsistent returns true if all contained assertions have no subjectZone and context and are within the shards range.

func (*Shard) MarshalCBOR 

func (s *Shard) MarshalCBOR(w *cbor.CBORWriter) error

MarshalCBOR implements the CBORMarshaler interface.

func (*Shard) NeededKeys 

func (s *Shard) NeededKeys(keysNeeded map[signature.MetaData]bool)

NeededKeys adds to keysNeeded key meta data which is necessary to verify all s's signatures.

func (*Shard) RemoveCtxAndZoneFromContent 

func (s *Shard) RemoveCtxAndZoneFromContent()

func (*Shard) SetValidSince 

func (s *Shard) SetValidSince(validSince int64)

SetValidSince sets the validSince time

func (*Shard) SetValidUntil 

func (s *Shard) SetValidUntil(validUntil int64)

SetValidUntil sets the validUntil time

func (*Shard) Sigs 

func (s *Shard) Sigs(keySpace keys.KeySpaceID) []signature.Sig

Sigs returns s's signatures in keyspace

func (*Shard) Sort 

func (s *Shard) Sort()

Sort sorts the content of the shard lexicographically.

func (*Shard) String 

func (s *Shard) String() string

String implements Stringer interface

func (*Shard) UnmarshalMap 

func (s *Shard) UnmarshalMap(m map[int]interface{}) error

UnmarshalMap converts a CBOR decoded map to this Shard.

func (*Shard) UpdateValidity 

func (s *Shard) UpdateValidity(validSince, validUntil int64, maxValidity time.Duration)

UpdateValidity updates the validity of this shard if the validity period is extended. It makes sure that the validity is never larger than maxValidity

func (*Shard) ValidSince 

func (s *Shard) ValidSince() int64

ValidSince returns the earliest validSince date of all contained signatures

func (*Shard) ValidUntil 

func (s *Shard) ValidUntil() int64

ValidUntil returns the latest validUntil date of all contained signatures

type StringInterval 

type StringInterval struct {
	Name string
}

StringInterval implements Interval for a single string value

func (StringInterval) Begin 

func (s StringInterval) Begin() string

Begin defines the start of a StringInterval namespace

func (StringInterval) End 

func (s StringInterval) End() string

End defines the end of a StringInterval namespace

type TotalInterval 

type TotalInterval struct{}

TotalInterval is an interval over the whole namespace

func (TotalInterval) Begin 

func (t TotalInterval) Begin() string

Begin defines the start of the total namespace

func (TotalInterval) End 

func (t TotalInterval) End() string

End defines the end of the total namespace

type WithSig 

type WithSig interface {
	Section
	AllSigs() []signature.Sig
	Sigs(keyspace keys.KeySpaceID) []signature.Sig
	AddSig(sig signature.Sig)
	DeleteSig(index int)
	DeleteAllSigs()
	GetContext() string
	GetSubjectZone() string
	UpdateValidity(validSince, validUntil int64, maxValidity time.Duration)
	ValidSince() int64
	SetValidSince(int64)
	ValidUntil() int64
	SetValidUntil(int64)
	Hash() string
	IsConsistent() bool
	NeededKeys(map[signature.MetaData]bool)
	AddSigInMarshaller()
	DontAddSigInMarshaller()
}

WithSig is an interface for a section protected by a signature. In the current implementation it can be an Assertion, Shard, Zone, AddressAssertion, AddressZone

type WithSigForward 

type WithSigForward interface {
	WithSig
	Interval
}

WithSigForward can be either an Assertion, Shard or Zone

type Zone 

type Zone struct {
	Signatures  []signature.Sig
	SubjectZone string
	Context     string
	Content     []*Assertion
	// contains filtered or unexported fields
}

Zone contains information about the zone

func GetZone 

func GetZone() *Zone

GetZone returns an zone containing a shard, assertion with all object types and a pshard. The zone is valid.

func (*Zone) AddCtxAndZoneToContent 

func (z *Zone) AddCtxAndZoneToContent()

func (*Zone) AddSig 

func (z *Zone) AddSig(sig signature.Sig)

AddSig adds the given signature

func (*Zone) AddSigInMarshaller 

func (z *Zone) AddSigInMarshaller()

func (*Zone) AllSigs 

func (z *Zone) AllSigs() []signature.Sig

AllSigs returns the zone's signatures

func (*Zone) Begin 

func (z *Zone) Begin() string

Begin returns the begining of the interval of this zone.

func (*Zone) CompareTo 

func (z *Zone) CompareTo(zone *Zone) int

CompareTo compares two zones and returns 0 if they are equal, 1 if z is greater than zone and -1 if z is smaller than zone

func (*Zone) DeleteAllSigs 

func (z *Zone) DeleteAllSigs()

DeleteAllSigs deletes all signature

func (*Zone) DeleteSig 

func (z *Zone) DeleteSig(i int)

DeleteSig deletes ith signature

func (*Zone) DontAddSigInMarshaller 

func (z *Zone) DontAddSigInMarshaller()

func (*Zone) End 

func (z *Zone) End() string

End returns the end of the interval of this zone.

func (*Zone) GetContext 

func (z *Zone) GetContext() string

GetContext returns the context of the zone

func (*Zone) GetSubjectZone 

func (z *Zone) GetSubjectZone() string

GetSubjectZone returns the zone of the zone

func (*Zone) Hash 

func (z *Zone) Hash() string

Hash returns a string containing all information uniquely identifying a shard.

func (*Zone) IsConsistent 

func (z *Zone) IsConsistent() bool

IsConsistent returns true if all contained assertions and shards are consistent

func (*Zone) MarshalCBOR 

func (z *Zone) MarshalCBOR(w *cbor.CBORWriter) error

MarshalCBOR implements the CBORMarshaler interface.

func (*Zone) NeededKeys 

func (z *Zone) NeededKeys(keysNeeded map[signature.MetaData]bool)

NeededKeys adds to keysNeeded key meta data which is necessary to verify all z's signatures.

func (*Zone) RemoveCtxAndZoneFromContent 

func (z *Zone) RemoveCtxAndZoneFromContent()

func (*Zone) SetValidSince 

func (z *Zone) SetValidSince(validSince int64)

SetValidSince sets the validSince time

func (*Zone) SetValidUntil 

func (z *Zone) SetValidUntil(validUntil int64)

SetValidUntil sets the validUntil time

func (*Zone) Sigs 

func (z *Zone) Sigs(keySpace keys.KeySpaceID) []signature.Sig

Sigs returns z's signatures in keyspace

func (*Zone) Sort 

func (z *Zone) Sort()

Sort sorts the content of the zone lexicographically.

func (*Zone) String 

func (z *Zone) String() string

String implements Stringer interface

func (*Zone) UnmarshalMap 

func (z *Zone) UnmarshalMap(m map[int]interface{}) error

UnmarshalMap decodes the output from the CBOR decoder into this struct.

func (*Zone) UpdateValidity 

func (z *Zone) UpdateValidity(validSince, validUntil int64, maxValidity time.Duration)

UpdateValidity updates the validity of this zone if the validity period is extended. It makes sure that the validity is never larger than maxValidity

func (*Zone) ValidSince 

func (z *Zone) ValidSince() int64

ValidSince returns the earliest validSince date of all contained signatures

func (*Zone) ValidUntil 

func (z *Zone) ValidUntil() int64

ValidUntil returns the latest validUntil date of all contained signatures

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