models

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 Go to latest Published: Feb 27, 2020 License: MIT Imports: 12 Imported by: 0

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Index

Constants

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const DefaultTTL = uint32(300)

DefaultTTL is applied to any DNS record without an explicit TTL.

Variables

This section is empty.

Functions

func IsQuoted 

func IsQuoted(s string) bool

IsQuoted returns true if the string starts and ends with a double quote.

func NameserversToStrings 

func NameserversToStrings(nss []*Nameserver) (s []string)

NameserversToStrings constructs a list of lists from *Nameserver structs

func ParseQuotedTxt 

func ParseQuotedTxt(s string) []string

ParseQuotedTxt returns the individual strings of a combined quoted string. `foo` -> []string{"foo"} `"foo"` -> []string{"foo"} `"foo" "bar"` -> []string{"foo", "bar"} NOTE: it is assumed there is exactly one space between the quotes.

func PostProcessRecords 

func PostProcessRecords(recs []*RecordConfig)

PostProcessRecords does any post-processing of the downloaded DNS records.

func StripQuotes 

func StripQuotes(s string) string

StripQuotes returns the string with the starting and ending quotes removed.

Types

type Correction 

type Correction struct {
	F   func() error `json:"-"`
	Msg string
}

Correction is anything that can be run. Implementation is up to the specific provider.

type DNSConfig 

type DNSConfig struct {
	Registrars         []*RegistrarConfig            `json:"registrars"`
	DNSProviders       []*DNSProviderConfig          `json:"dns_providers"`
	Domains            []*DomainConfig               `json:"domains"`
	RegistrarsByName   map[string]*RegistrarConfig   `json:"-"`
	DNSProvidersByName map[string]*DNSProviderConfig `json:"-"`
}

DNSConfig describes the desired DNS configuration, usually loaded from dnsconfig.js.

func (*DNSConfig) DomainContainingFQDN 

func (config *DNSConfig) DomainContainingFQDN(fqdn string) *DomainConfig

DomainContainingFQDN finds the best domain from the dns config for the given record fqdn. It will chose the domain whose name is the longest suffix match for the fqdn.

func (*DNSConfig) FindDomain 

func (config *DNSConfig) FindDomain(query string) *DomainConfig

FindDomain returns the *DomainConfig for domain query in config.

type DNSProvider 

type DNSProvider interface {
	GetNameservers(domain string) ([]*Nameserver, error)
	GetDomainCorrections(dc *DomainConfig) ([]*Correction, error)
	GetZoneRecords(domain string) (Records, error)
}

DNSProvider is an interface for DNS Provider plug-ins.

type DNSProviderConfig 

type DNSProviderConfig struct {
	Name     string          `json:"name"`
	Type     string          `json:"type"`
	Metadata json.RawMessage `json:"meta,omitempty"`
}

DNSProviderConfig describes a DNS service provider.

type DNSProviderInstance 

type DNSProviderInstance struct {
	ProviderBase
	Driver              DNSProvider
	NumberOfNameservers int
}

DNSProviderInstance is a single DNS provider.

type DomainConfig 

type DomainConfig struct {
	Name             string         `json:"name"` // NO trailing "."
	RegistrarName    string         `json:"registrar"`
	DNSProviderNames map[string]int `json:"dnsProviders"`

	Metadata      map[string]string `json:"meta,omitempty"`
	Records       Records           `json:"records"`
	Nameservers   []*Nameserver     `json:"nameservers,omitempty"`
	KeepUnknown   bool              `json:"keepunknown,omitempty"`
	IgnoredLabels []string          `json:"ignored_labels,omitempty"`
	AutoDNSSEC    bool              `json:"auto_dnssec,omitempty"`

	// These fields contain instantiated provider instances once everything is linked up.
	// This linking is in two phases:
	// 1. Metadata (name/type) is availible just from the dnsconfig. Validation can use that.
	// 2. Final driver instances are loaded after we load credentials. Any actual provider interaction requires that.
	RegistrarInstance    *RegistrarInstance     `json:"-"`
	DNSProviderInstances []*DNSProviderInstance `json:"-"`
}

DomainConfig describes a DNS domain (tecnically a DNS zone).

func (*DomainConfig) Copy 

func (dc *DomainConfig) Copy() (*DomainConfig, error)

Copy returns a deep copy of the DomainConfig.

func (*DomainConfig) Filter 

func (dc *DomainConfig) Filter(f func(r *RecordConfig) bool)

Filter removes all records that don't match the filter f.

func (*DomainConfig) Punycode 

func (dc *DomainConfig) Punycode() error

Punycode will convert all records to punycode format. It will encode: - Name - NameFQDN - Target (CNAME and MX only)

type Nameserver 

type Nameserver struct {
	Name string `json:"name"` // Normalized to a FQDN with NO trailing "."
}

Nameserver describes a nameserver.

func StringsToNameservers 

func StringsToNameservers(nss []string) []*Nameserver

StringsToNameservers constructs a list of *Nameserver structs using a list of FQDNs.

func (*Nameserver) String 

func (n *Nameserver) String() string

type ProviderBase 

type ProviderBase struct {
	Name         string
	IsDefault    bool
	ProviderType string
}

ProviderBase describes providers.

type RecordConfig 

type RecordConfig struct {
	Type             string            `json:"type"`   // All caps rtype name.
	Name             string            `json:"name"`   // The short name. See above.
	NameFQDN         string            `json:"-"`      // Must end with ".$origin". See above.
	Target           string            `json:"target"` // If a name, must end with "."
	TTL              uint32            `json:"ttl,omitempty"`
	Metadata         map[string]string `json:"meta,omitempty"`
	MxPreference     uint16            `json:"mxpreference,omitempty"`
	SrvPriority      uint16            `json:"srvpriority,omitempty"`
	SrvWeight        uint16            `json:"srvweight,omitempty"`
	SrvPort          uint16            `json:"srvport,omitempty"`
	CaaTag           string            `json:"caatag,omitempty"`
	CaaFlag          uint8             `json:"caaflag,omitempty"`
	NaptrOrder       uint16            `json:"naptrorder,omitempty"`
	NaptrPreference  uint16            `json:"naptrpreference,omitempty"`
	NaptrFlags       string            `json:"naptrflags,omitempty"`
	NaptrService     string            `json:"naptrservice,omitempty"`
	NaptrRegexp      string            `json:"naptrregexp,omitempty"`
	SshfpAlgorithm   uint8             `json:"sshfpalgorithm,omitempty"`
	SshfpFingerprint uint8             `json:"sshfpfingerprint,omitempty"`
	SoaMbox          string            `json:"soambox,omitempty"`
	SoaSerial        uint32            `json:"soaserial,omitempty"`
	SoaRefresh       uint32            `json:"soarefresh,omitempty"`
	SoaRetry         uint32            `json:"soaretry,omitempty"`
	SoaExpire        uint32            `json:"soaexpire,omitempty"`
	SoaMinttl        uint32            `json:"soaminttl,omitempty"`
	TlsaUsage        uint8             `json:"tlsausage,omitempty"`
	TlsaSelector     uint8             `json:"tlsaselector,omitempty"`
	TlsaMatchingType uint8             `json:"tlsamatchingtype,omitempty"`
	TxtStrings       []string          `json:"txtstrings,omitempty"` // TxtStrings stores all strings (including the first). Target stores only the first one.
	R53Alias         map[string]string `json:"r53_alias,omitempty"`

	Original interface{} `json:"-"` // Store pointer to provider-specific record object. Used in diffing.
}

RecordConfig stores a DNS record. Valid types: 

Official:
  A
  AAAA
  ANAME  // Technically not an official rtype yet.
  CAA
  CNAME
  MX
  NAPTR
  NS
  PTR
  SRV
  SSHFP
  TLSA
  TXT
Pseudo-Types:
  ALIAS
  AUTODNSSEC
  CF_REDIRECT
  CF_TEMP_REDIRECT
  FRAME
  IMPORT_TRANSFORM
  NAMESERVER
  NO_PURGE
  PAGE_RULE
  PURGE
  URL
  URL301

Notes about the fields:

Name: 

This is the shortname i.e. the NameFQDN without the origin suffix.
It should never have a trailing "."
It should never be null. The apex (naked domain) is stored as "@".
If the origin is "foo.com." and Name is "foo.com", this literally means
    the intended FQDN is "foo.com.foo.com." (which may look odd)

NameFQDN: 

This is the FQDN version of Name.
It should never have a trailiing ".".
NOTE: Eventually we will unexport Name/NameFQDN. Please start using
  the setters (SetLabel/SetLabelFromFQDN) and getters (GetLabel/GetLabelFQDN).
  as they will always work.

Target: 

This is the host or IP address of the record, with
  the other related paramters (weight, priority, etc.) stored in individual
  fields.
NOTE: Eventually we will unexport Target. Please start using the
  setters (SetTarget*) and getters (GetTarget*) as they will always work.

Idioms: 

rec.Label() == "@"   // Is this record at the apex?

func RRtoRC 

func RRtoRC(rr dns.RR, origin string) RecordConfig

RRtoRC converts dns.RR to RecordConfig

func (*RecordConfig) Copy 

func (rc *RecordConfig) Copy() (*RecordConfig, error)

Copy returns a deep copy of a RecordConfig.

func (*RecordConfig) GetLabel 

func (rc *RecordConfig) GetLabel() string

GetLabel returns the shortname of the label associated with this RecordConfig. It will never end with "." It does not need further shortening (i.e. if it returns "foo.com" and the 

domain is "foo.com" then the FQDN is actually "foo.com.foo.com").

It will never be "" (the apex is returned as "@").

func (*RecordConfig) GetLabelFQDN 

func (rc *RecordConfig) GetLabelFQDN() string

GetLabelFQDN returns the FQDN of the label associated with this RecordConfig. It will not end with ".".

func (*RecordConfig) GetTargetCombined 

func (rc *RecordConfig) GetTargetCombined() string

GetTargetCombined returns a string with the various fields combined. For example, an MX record might output `10 mx10.example.tld`.

func (*RecordConfig) GetTargetDebug 

func (rc *RecordConfig) GetTargetDebug() string

GetTargetDebug returns a string with the various fields spelled out.

func (*RecordConfig) GetTargetField 

func (rc *RecordConfig) GetTargetField() string

GetTargetField returns the target. There may be other fields (for example an MX record also has a .MxPreference field.

func (*RecordConfig) GetTargetIP 

func (rc *RecordConfig) GetTargetIP() net.IP

GetTargetIP returns the net.IP stored in Target.

func (*RecordConfig) GetTargetSortable 

func (rc *RecordConfig) GetTargetSortable() string

GetTargetSortable returns a string that is sortable.

func (*RecordConfig) Key 

func (rc *RecordConfig) Key() RecordKey

Key converts a RecordConfig into a RecordKey.

func (*RecordConfig) PopulateFromString 

func (r *RecordConfig) PopulateFromString(rtype, contents, origin string) error

PopulateFromString populates a RecordConfig given a type and string. Many providers give all the parameters of a resource record in one big string (all the parameters of an MX, SRV, CAA, etc). Rather than have each provider rewrite this code many times, here's a helper function to use.

At this time, the idiom is to panic rather than continue with potentially misunderstood data. We do this panic() at the provider level. Therefore the typical calling sequence is: 

if err := rc.PopulateFromString(rtype, value, origin); err != nil {
    panic(fmt.Errorf("unparsable record received from provider: %w", err))
}

func (*RecordConfig) SetLabel 

func (rc *RecordConfig) SetLabel(short, origin string)

SetLabel sets the .Name/.NameFQDN fields given a short name and origin. origin must not have a trailing dot: The entire code base 

maintains dc.Name without the trailig dot. Finding a dot here means
something is very wrong.

short must not have a training dot: That would mean you have 

a FQDN, and shouldn't be using SetLabel().  Maybe SetLabelFromFQDN()?

func (*RecordConfig) SetLabelFromFQDN 

func (rc *RecordConfig) SetLabelFromFQDN(fqdn, origin string)

SetLabelFromFQDN sets the .Name/.NameFQDN fields given a FQDN and origin. fqdn may have a trailing "." but it is not required. origin may not have a trailing dot.

func (*RecordConfig) SetTarget 

func (rc *RecordConfig) SetTarget(target string) error

SetTarget sets the target, assuming that the rtype is appropriate.

func (*RecordConfig) SetTargetCAA 

func (rc *RecordConfig) SetTargetCAA(flag uint8, tag string, target string) error

SetTargetCAA sets the CAA fields.

func (*RecordConfig) SetTargetCAAString 

func (rc *RecordConfig) SetTargetCAAString(s string) error

SetTargetCAAString is like SetTargetCAA but accepts one big string. Ex: `0 issue "letsencrypt.org"`

func (*RecordConfig) SetTargetCAAStrings 

func (rc *RecordConfig) SetTargetCAAStrings(flag, tag, target string) error

SetTargetCAAStrings is like SetTargetCAA but accepts strings.

func (*RecordConfig) SetTargetIP 

func (rc *RecordConfig) SetTargetIP(ip net.IP) error

SetTargetIP sets the target to an IP, verifying this is an appropriate rtype.

func (*RecordConfig) SetTargetMX 

func (rc *RecordConfig) SetTargetMX(pref uint16, target string) error

SetTargetMX sets the MX fields.

func (*RecordConfig) SetTargetMXString 

func (rc *RecordConfig) SetTargetMXString(s string) error

SetTargetMXString is like SetTargetMX but accepts one big string.

func (*RecordConfig) SetTargetMXStrings 

func (rc *RecordConfig) SetTargetMXStrings(pref, target string) error

SetTargetMXStrings is like SetTargetMX but accepts strings.

func (*RecordConfig) SetTargetNAPTR 

func (rc *RecordConfig) SetTargetNAPTR(order uint16, preference uint16, flags string, service string, regexp string, target string) error

SetTargetNAPTR sets the NAPTR fields.

func (*RecordConfig) SetTargetNAPTRString 

func (rc *RecordConfig) SetTargetNAPTRString(s string) error

SetTargetNAPTRString is like SetTargetNAPTR but accepts one big string.

func (*RecordConfig) SetTargetNAPTRStrings 

func (rc *RecordConfig) SetTargetNAPTRStrings(order, preference, flags string, service string, regexp string, target string) error

SetTargetNAPTRStrings is like SetTargetNAPTR but accepts strings.

func (*RecordConfig) SetTargetSOA 

func (rc *RecordConfig) SetTargetSOA(ns, mbox string, serial, refresh, retry, expire, minttl uint32) error

SetTargetSOA sets the SOA fields.

func (*RecordConfig) SetTargetSOAString 

func (rc *RecordConfig) SetTargetSOAString(s string) error

SetTargetSOAString is like SetTargetSOA but accepts one big string.

func (*RecordConfig) SetTargetSOAStrings 

func (rc *RecordConfig) SetTargetSOAStrings(ns, mbox, serial, refresh, retry, expire, minttl string) error

SetTargetSOAStrings is like SetTargetSOA but accepts strings.

func (*RecordConfig) SetTargetSRV 

func (rc *RecordConfig) SetTargetSRV(priority, weight, port uint16, target string) error

SetTargetSRV sets the SRV fields.

func (*RecordConfig) SetTargetSRVPriorityString 

func (rc *RecordConfig) SetTargetSRVPriorityString(priority uint16, s string) error

SetTargetSRVPriorityString is like SetTargetSRV but accepts priority as an uint16 and the rest of the values joined in a string that needs to be parsed. This is a helper function that comes in handy when a provider re-uses the MX preference field as the SRV priority.

func (*RecordConfig) SetTargetSRVString 

func (rc *RecordConfig) SetTargetSRVString(s string) error

SetTargetSRVString is like SetTargetSRV but accepts one big string to be parsed.

func (*RecordConfig) SetTargetSRVStrings 

func (rc *RecordConfig) SetTargetSRVStrings(priority, weight, port, target string) (err error)

SetTargetSRVStrings is like SetTargetSRV but accepts all parameters as strings.

func (*RecordConfig) SetTargetSSHFP 

func (rc *RecordConfig) SetTargetSSHFP(algorithm uint8, fingerprint uint8, target string) error

SetTargetSSHFP sets the SSHFP fields.

func (*RecordConfig) SetTargetSSHFPString 

func (rc *RecordConfig) SetTargetSSHFPString(s string) error

SetTargetSSHFPString is like SetTargetSSHFP but accepts one big string.

func (*RecordConfig) SetTargetSSHFPStrings 

func (rc *RecordConfig) SetTargetSSHFPStrings(algorithm, fingerprint, target string) error

SetTargetSSHFPStrings is like SetTargetSSHFP but accepts strings.

func (*RecordConfig) SetTargetTLSA 

func (rc *RecordConfig) SetTargetTLSA(usage, selector, matchingtype uint8, target string) error

SetTargetTLSA sets the TLSA fields.

func (*RecordConfig) SetTargetTLSAString 

func (rc *RecordConfig) SetTargetTLSAString(s string) error

SetTargetTLSAString is like SetTargetTLSA but accepts one big string.

func (*RecordConfig) SetTargetTLSAStrings 

func (rc *RecordConfig) SetTargetTLSAStrings(usage, selector, matchingtype, target string) (err error)

SetTargetTLSAStrings is like SetTargetTLSA but accepts strings.

func (*RecordConfig) SetTargetTXT 

func (rc *RecordConfig) SetTargetTXT(s string) error

SetTargetTXT sets the TXT fields when there is 1 string.

func (*RecordConfig) SetTargetTXTString 

func (rc *RecordConfig) SetTargetTXTString(s string) error

SetTargetTXTString is like SetTargetTXT but accepts one big string, which must be parsed into one or more strings based on how it is quoted. Ex: foo << 1 string 

foo bar         << 1 string
"foo" "bar"     << 2 strings

func (*RecordConfig) SetTargetTXTs 

func (rc *RecordConfig) SetTargetTXTs(s []string) error

SetTargetTXTs sets the TXT fields when there are many strings.

func (*RecordConfig) String 

func (rc *RecordConfig) String() string

String returns the text representation of the resource record.

func (*RecordConfig) ToDiffable 

func (rc *RecordConfig) ToDiffable(extraMaps ...map[string]string) string

ToDiffable returns a string that is comparable by a differ. extraMaps: a list of maps that should be included in the comparison.

func (*RecordConfig) ToRR 

func (rc *RecordConfig) ToRR() dns.RR

ToRR converts a RecordConfig to a dns.RR.

func (*RecordConfig) UnsafeSetLabelNull 

func (rc *RecordConfig) UnsafeSetLabelNull()

UnsafeSetLabelNull sets the label to "". Normally the FQDN is denoted by .Name being "@" however this can be used to violate that assertion. It should only be used on copies of a RecordConfig that is being used for non-standard things like Marshalling yaml.

type RecordKey 

type RecordKey struct {
	NameFQDN string
	Type     string
}

RecordKey represents a resource record in a format used by some systems.

type Records 

type Records []*RecordConfig

Records is a list of *RecordConfig.

func RRstoRCs 

func RRstoRCs(rrs []dns.RR, origin string) Records

RRstoRCs converts []dns.RR to []RecordConfigs.

func (Records) FQDNMap 

func (recs Records) FQDNMap() (m map[string]bool)

FQDNMap returns a map of all LabelFQDNs. Useful for making a truthtable of labels that exist in Records.

func (Records) GroupedByFQDN 

func (recs Records) GroupedByFQDN() ([]string, map[string]Records)

GroupedByFQDN returns a map of keys to records, grouped by FQDN.

func (Records) GroupedByKey 

func (recs Records) GroupedByKey() map[RecordKey]Records

GroupedByKey returns a map of keys to records.

func (Records) GroupedByLabel 

func (recs Records) GroupedByLabel() ([]string, map[string]Records)

GroupedByLabel returns a map of keys to records, and their original key order.

func (Records) HasRecordTypeName 

func (recs Records) HasRecordTypeName(rtype, name string) bool

HasRecordTypeName returns True if there is a record with this rtype and name.

type Registrar 

type Registrar interface {
	GetRegistrarCorrections(dc *DomainConfig) ([]*Correction, error)
}

Registrar is an interface for Registrar plug-ins.

type RegistrarConfig 

type RegistrarConfig struct {
	Name     string          `json:"name"`
	Type     string          `json:"type"`
	Metadata json.RawMessage `json:"meta,omitempty"`
}

RegistrarConfig describes a registrar.

type RegistrarInstance 

type RegistrarInstance struct {
	ProviderBase
	Driver Registrar
}

RegistrarInstance is a single registrar.

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