core

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 Go to latest Published: Apr 22, 2024 License: MPL-2.0 Imports: 33 Imported by: 114

Documentation

Index

Constants

View Source 
const (
	StatusUnknown     = AcmeStatus("unknown")     // Unknown status; the default
	StatusPending     = AcmeStatus("pending")     // In process; client has next action
	StatusProcessing  = AcmeStatus("processing")  // In process; server has next action
	StatusReady       = AcmeStatus("ready")       // Order is ready for finalization
	StatusValid       = AcmeStatus("valid")       // Object is valid
	StatusInvalid     = AcmeStatus("invalid")     // Validation failed
	StatusRevoked     = AcmeStatus("revoked")     // Object no longer valid
	StatusDeactivated = AcmeStatus("deactivated") // Object has been deactivated
)

These statuses are the states of authorizations, challenges, and registrations

View Source 
const (
	ResourceNewReg       = AcmeResource("new-reg")
	ResourceNewAuthz     = AcmeResource("new-authz")
	ResourceNewCert      = AcmeResource("new-cert")
	ResourceRevokeCert   = AcmeResource("revoke-cert")
	ResourceRegistration = AcmeResource("reg")
	ResourceChallenge    = AcmeResource("challenge")
	ResourceAuthz        = AcmeResource("authz")
	ResourceKeyChange    = AcmeResource("key-change")
)

The types of ACME resources

View Source 
const (
	ChallengeTypeHTTP01    = AcmeChallenge("http-01")
	ChallengeTypeDNS01     = AcmeChallenge("dns-01")
	ChallengeTypeTLSALPN01 = AcmeChallenge("tls-alpn-01")
)

These types are the available challenges

View Source 
const (
	OCSPStatusGood    = OCSPStatus("good")
	OCSPStatusRevoked = OCSPStatus("revoked")
	// Not a real OCSP status. This is a placeholder we write before the
	// actual precertificate is issued, to ensure we never return "good" before
	// issuance succeeds, for BR compliance reasons.
	OCSPStatusNotReady = OCSPStatus("wait")
)

These status are the states of OCSP

View Source 
const DNSPrefix = "_acme-challenge"

DNSPrefix is attached to DNS names in DNS challenges

View Source 
const Unspecified = "Unspecified"

Variables

View Source 
var BuildHost string

BuildHost is set by the compiler and is used by GetBuildHost

View Source 
var BuildID string

BuildID is set by the compiler (using -ldflags "-X core.BuildID $(git rev-parse --short HEAD)") and is used by GetBuildID

View Source 
var BuildTime string

BuildTime is set by the compiler and is used by GetBuildTime

View Source 
var OCSPStatusToInt = map[OCSPStatus]int{
	OCSPStatusGood:     ocsp.Good,
	OCSPStatusRevoked:  ocsp.Revoked,
	OCSPStatusNotReady: -1,
}
View Source 
var RandReader randSource = rand.Reader

RandReader is used so that it can be replaced in tests that require deterministic output

Functions

func Command 

func Command() string

func Fingerprint256 

func Fingerprint256(data []byte) string

Fingerprint256 produces an unpadded, URL-safe Base64-encoded SHA256 digest of the data.

func GetBuildHost 

func GetBuildHost() (retID string)

GetBuildHost identifies the building host

func GetBuildID 

func GetBuildID() (retID string)

GetBuildID identifies what build is running.

func GetBuildTime 

func GetBuildTime() (retID string)

GetBuildTime identifies when this build was made

func HashNames 

func HashNames(names []string) []byte

HashNames returns a hash of the names requested. This is intended for use when interacting with the orderFqdnSets table and rate limiting.

func IsASCII 

func IsASCII(str string) bool

IsASCII determines if every character in a string is encoded in the ASCII character set.

func IsAnyNilOrZero 

func IsAnyNilOrZero(vals ...interface{}) bool

IsAnyNilOrZero returns whether any of the supplied values are nil, or (if not) if any of them is its type's zero-value. This is useful for validating that all required fields on a proto message are present.

func KeyDigestB64 

func KeyDigestB64(key crypto.PublicKey) (string, error)

KeyDigestB64 produces a padded, standard Base64-encoded SHA256 digest of a provided public key.

func KeyDigestEquals 

func KeyDigestEquals(j, k crypto.PublicKey) bool

KeyDigestEquals determines whether two public keys have the same digest.

func LoadCert 

func LoadCert(filename string) (*x509.Certificate, error)

LoadCert loads a PEM certificate specified by filename or returns an error

func LooksLikeAToken 

func LooksLikeAToken(token string) bool

LooksLikeAToken checks whether a string represents a 32-octet value in the URL-safe base64 alphabet.

func NewToken 

func NewToken() string

NewToken produces a random string for Challenges, etc.

func PublicKeysEqual 

func PublicKeysEqual(a, b crypto.PublicKey) (bool, error)

PublicKeysEqual determines whether two public keys are identical.

func RandomString 

func RandomString(byteLength int) string

RandomString returns a randomly generated string of the requested length.

func RetryBackoff 

func RetryBackoff(retries int, base, max time.Duration, factor float64) time.Duration

RetryBackoff calculates a backoff time based on number of retries, will always add jitter so requests that start in unison won't fall into lockstep. Because of this the returned duration can always be larger than the maximum by a factor of retryJitter. Adapted from https://github.com/grpc/grpc-go/blob/v1.11.3/backoff.go#L77-L96

func SerialToString 

func SerialToString(serial *big.Int) string

SerialToString converts a certificate serial number (big.Int) to a String consistently.

func StringToSerial 

func StringToSerial(serial string) (*big.Int, error)

StringToSerial converts a string into a certificate serial number (big.Int) consistently.

func UniqueLowerNames 

func UniqueLowerNames(names []string) (unique []string)

UniqueLowerNames returns the set of all unique names in the input after all of them are lowercased. The returned names will be in their lowercased form and sorted alphabetically.

func ValidSerial 

func ValidSerial(serial string) bool

ValidSerial tests whether the input string represents a syntactically valid serial number, i.e., that it is a valid hex string between 32 and 36 characters long.

Types

type AcmeChallenge 

type AcmeChallenge string

AcmeChallenge values identify different types of ACME challenges

func (AcmeChallenge) IsValid 

func (c AcmeChallenge) IsValid() bool

IsValid tests whether the challenge is a known challenge

type AcmeResource 

type AcmeResource string

AcmeResource values identify different types of ACME resources

type AcmeStatus 

type AcmeStatus string

AcmeStatus defines the state of a given authorization

type Authorization 

type Authorization struct {
	// An identifier for this authorization, unique across
	// authorizations and certificates within this instance.
	ID string `json:"id,omitempty" db:"id"`

	// The identifier for which authorization is being given
	Identifier identifier.ACMEIdentifier `json:"identifier,omitempty" db:"identifier"`

	// The registration ID associated with the authorization
	RegistrationID int64 `json:"regId,omitempty" db:"registrationID"`

	// The status of the validation of this authorization
	Status AcmeStatus `json:"status,omitempty" db:"status"`

	// The date after which this authorization will be no
	// longer be considered valid. Note: a certificate may be issued even on the
	// last day of an authorization's lifetime. The last day for which someone can
	// hold a valid certificate based on an authorization is authorization
	// lifetime + certificate lifetime.
	Expires *time.Time `json:"expires,omitempty" db:"expires"`

	// An array of challenges objects used to validate the
	// applicant's control of the identifier.  For authorizations
	// in process, these are challenges to be fulfilled; for
	// final authorizations, they describe the evidence that
	// the server used in support of granting the authorization.
	//
	// There should only ever be one challenge of each type in this
	// slice and the order of these challenges may not be predictable.
	Challenges []Challenge `json:"challenges,omitempty" db:"-"`

	// https://datatracker.ietf.org/doc/html/rfc8555#page-29
	//
	// wildcard (optional, boolean):  This field MUST be present and true
	//   for authorizations created as a result of a newOrder request
	//   containing a DNS identifier with a value that was a wildcard
	//   domain name.  For other authorizations, it MUST be absent.
	//   Wildcard domain names are described in Section 7.1.3.
	//
	// This is not represented in the database because we calculate it from
	// the identifier stored in the database. Unlike the identifier returned
	// as part of the authorization, the identifier we store in the database
	// can contain an asterisk.
	Wildcard bool `json:"wildcard,omitempty" db:"-"`
}

Authorization represents the authorization of an account key holder to act on behalf of a domain. This struct is intended to be used both internally and for JSON marshaling on the wire. Any fields that should be suppressed on the wire (e.g., ID, regID) must be made empty before marshaling.

func (*Authorization) FindChallengeByStringID 

func (authz *Authorization) FindChallengeByStringID(id string) int

FindChallengeByStringID will look for a challenge matching the given ID inside this authorization. If found, it will return the index of that challenge within the Authorization's Challenges array. Otherwise it will return -1.

func (*Authorization) SolvedBy 

func (authz *Authorization) SolvedBy() (AcmeChallenge, error)

SolvedBy will look through the Authorizations challenges, returning the type of the *first* challenge it finds with Status: valid, or an error if no challenge is valid.

type CertDER 

type CertDER []byte

CertDER is a convenience type that helps differentiate what the underlying byte slice contains

type Certificate 

type Certificate struct {
	ID             int64 `db:"id"`
	RegistrationID int64 `db:"registrationID"`

	Serial  string    `db:"serial"`
	Digest  string    `db:"digest"`
	DER     []byte    `db:"der"`
	Issued  time.Time `db:"issued"`
	Expires time.Time `db:"expires"`
}

Certificate objects are entirely internal to the server. The only thing exposed on the wire is the certificate itself.

type CertificateStatus 

type CertificateStatus struct {
	ID int64 `db:"id"`

	Serial string `db:"serial"`

	// status: 'good' or 'revoked'. Note that good, expired certificates remain
	// with status 'good' but don't necessarily get fresh OCSP responses.
	Status OCSPStatus `db:"status"`

	// ocspLastUpdated: The date and time of the last time we generated an OCSP
	// response. If we have never generated one, this has the zero value of
	// time.Time, i.e. Jan 1 1970.
	OCSPLastUpdated time.Time `db:"ocspLastUpdated"`

	// revokedDate: If status is 'revoked', this is the date and time it was
	// revoked. Otherwise it has the zero value of time.Time, i.e. Jan 1 1970.
	RevokedDate time.Time `db:"revokedDate"`

	// revokedReason: If status is 'revoked', this is the reason code for the
	// revocation. Otherwise it is zero (which happens to be the reason
	// code for 'unspecified').
	RevokedReason revocation.Reason `db:"revokedReason"`

	LastExpirationNagSent time.Time `db:"lastExpirationNagSent"`

	// NotAfter and IsExpired are convenience columns which allow expensive
	// queries to quickly filter out certificates that we don't need to care about
	// anymore. These are particularly useful for the expiration mailer and CRL
	// updater. See https://github.com/letsencrypt/boulder/issues/1864.
	NotAfter  time.Time `db:"notAfter"`
	IsExpired bool      `db:"isExpired"`

	// Note: this is not an issuance.IssuerNameID because that would create an
	// import cycle between core and issuance.
	// Note2: This field used to be called `issuerID`. We keep the old name in
	// the DB, but update the Go field name to be clear which type of ID this
	// is.
	IssuerNameID int64 `db:"issuerID"`
}

CertificateStatus structs are internal to the server. They represent the latest data about the status of the certificate, required for generating new OCSP responses and determining if a certificate has been revoked.

type Challenge 

type Challenge struct {
	// The type of challenge
	Type AcmeChallenge `json:"type"`

	// The status of this challenge
	Status AcmeStatus `json:"status,omitempty"`

	// Contains the error that occurred during challenge validation, if any
	Error *probs.ProblemDetails `json:"error,omitempty"`

	// A URI to which a response can be POSTed
	URI string `json:"uri,omitempty"`

	// For the V2 API the "URI" field is deprecated in favour of URL.
	URL string `json:"url,omitempty"`

	// Used by http-01, tls-sni-01, tls-alpn-01 and dns-01 challenges
	Token string `json:"token,omitempty"`

	// The expected KeyAuthorization for validation of the challenge. Populated by
	// the RA prior to passing the challenge to the VA. For legacy reasons this
	// field is called "ProvidedKeyAuthorization" because it was initially set by
	// the content of the challenge update POST from the client. It is no longer
	// set that way and should be renamed to "KeyAuthorization".
	// TODO(@cpu): Rename `ProvidedKeyAuthorization` to `KeyAuthorization`.
	ProvidedKeyAuthorization string `json:"keyAuthorization,omitempty"`

	// Contains information about URLs used or redirected to and IPs resolved and
	// used
	ValidationRecord []ValidationRecord `json:"validationRecord,omitempty"`
	// The time at which the server validated the challenge. Required by
	// RFC8555 if status is valid.
	Validated *time.Time `json:"validated,omitempty"`
}

Challenge is an aggregate of all data needed for any challenges.

Rather than define individual types for different types of challenge, we just throw all the elements into one bucket, together with the common metadata elements.

func DNSChallenge01 

func DNSChallenge01(token string) Challenge

DNSChallenge01 constructs a dns-01 challenge.

func HTTPChallenge01 

func HTTPChallenge01(token string) Challenge

HTTPChallenge01 constructs a http-01 challenge.

func NewChallenge 

func NewChallenge(kind AcmeChallenge, token string) (Challenge, error)

NewChallenge constructs a challenge of the given kind. It returns an error if the challenge type is unrecognized.

func TLSALPNChallenge01 

func TLSALPNChallenge01(token string) Challenge

TLSALPNChallenge01 constructs a tls-alpn-01 challenge.

func (Challenge) CheckConsistencyForClientOffer 

func (ch Challenge) CheckConsistencyForClientOffer() error

CheckConsistencyForClientOffer checks the fields of a challenge object before it is given to the client.

func (Challenge) CheckConsistencyForValidation 

func (ch Challenge) CheckConsistencyForValidation() error

CheckConsistencyForValidation checks the fields of a challenge object before it is given to the VA.

func (Challenge) ExpectedKeyAuthorization 

func (ch Challenge) ExpectedKeyAuthorization(key *jose.JSONWebKey) (string, error)

ExpectedKeyAuthorization computes the expected KeyAuthorization value for the challenge.

func (Challenge) RecordsSane 

func (ch Challenge) RecordsSane() bool

RecordsSane checks the sanity of a ValidationRecord object before sending it back to the RA to be stored.

func (Challenge) StringID 

func (ch Challenge) StringID() string

StringID is used to generate a ID for challenges associated with new style authorizations. This is necessary as these challenges no longer have a unique non-sequential identifier in the new storage scheme. This identifier is generated by constructing a fnv hash over the challenge token and type and encoding the first 4 bytes of it using the base64 URL encoding.

type FQDNSet 

type FQDNSet struct {
	ID      int64
	SetHash []byte
	Serial  string
	Issued  time.Time
	Expires time.Time
}

FQDNSet contains the SHA256 hash of the lowercased, comma joined dNSNames contained in a certificate.

type JSONBuffer 

type JSONBuffer []byte

JSONBuffer fields get encoded and decoded JOSE-style, in base64url encoding with stripped padding.

func (JSONBuffer) MarshalJSON 

func (jb JSONBuffer) MarshalJSON() (result []byte, err error)

MarshalJSON encodes a JSONBuffer for transmission.

func (*JSONBuffer) UnmarshalJSON 

func (jb *JSONBuffer) UnmarshalJSON(data []byte) (err error)

UnmarshalJSON decodes a JSONBuffer to an object.

type OCSPStatus 

type OCSPStatus string

OCSPStatus defines the state of OCSP for a domain

type PolicyAuthority 

type PolicyAuthority interface {
	WillingToIssue([]string) error
	ChallengesFor(identifier.ACMEIdentifier) ([]Challenge, error)
	ChallengeTypeEnabled(AcmeChallenge) bool
	CheckAuthz(*Authorization) error
}

PolicyAuthority defines the public interface for the Boulder PA TODO(#5891): Move this interface to a more appropriate location.

type RawCertificateRequest 

type RawCertificateRequest struct {
	CSR JSONBuffer `json:"csr"` // The encoded CSR
}

type Registration 

type Registration struct {
	// Unique identifier
	ID int64 `json:"id,omitempty" db:"id"`

	// Account key to which the details are attached
	Key *jose.JSONWebKey `json:"key"`

	// Contact URIs
	Contact *[]string `json:"contact,omitempty"`

	// Agreement with terms of service
	Agreement string `json:"agreement,omitempty"`

	// InitialIP is the IP address from which the registration was created
	InitialIP net.IP `json:"initialIp"`

	// CreatedAt is the time the registration was created.
	CreatedAt *time.Time `json:"createdAt,omitempty"`

	Status AcmeStatus `json:"status"`
}

Registration objects represent non-public metadata attached to account keys.

type RenewalInfo 

type RenewalInfo struct {
	SuggestedWindow SuggestedWindow `json:"suggestedWindow"`
}

RenewalInfo is a type which is exposed to clients which query the renewalInfo endpoint specified in draft-aaron-ari.

func RenewalInfoImmediate 

func RenewalInfoImmediate(now time.Time) RenewalInfo

RenewalInfoImmediate constructs a `RenewalInfo` object with a suggested window in the past. Per the draft-ietf-acme-ari-01 spec, clients should attempt to renew immediately if the suggested window is in the past. The passed `now` is assumed to be a timestamp representing the current moment in time.

func RenewalInfoSimple 

func RenewalInfoSimple(issued time.Time, expires time.Time) RenewalInfo

RenewalInfoSimple constructs a `RenewalInfo` object and suggested window using a very simple renewal calculation: calculate a point 2/3rds of the way through the validity period, then give a 2-day window around that. Both the `issued` and `expires` timestamps are expected to be UTC.

type SCTDERs 

type SCTDERs [][]byte

SCTDERs is a convenience type

type Sha256Digest 

type Sha256Digest [sha256.Size]byte

func KeyDigest 

func KeyDigest(key crypto.PublicKey) (Sha256Digest, error)

KeyDigest produces the SHA256 digest of a provided public key.

type SuggestedWindow 

type SuggestedWindow struct {
	Start time.Time `json:"start"`
	End   time.Time `json:"end"`
}

SuggestedWindow is a type exposed inside the RenewalInfo resource.

func (SuggestedWindow) IsWithin 

func (window SuggestedWindow) IsWithin(now time.Time) bool

IsWithin returns true if the given time is within the suggested window, inclusive of the start time and exclusive of the end time.

type ValidationRecord 

type ValidationRecord struct {
	// SimpleHTTP only
	URL string `json:"url,omitempty"`

	// Shared
	Hostname          string   `json:"hostname,omitempty"`
	Port              string   `json:"port,omitempty"`
	AddressesResolved []net.IP `json:"addressesResolved,omitempty"`
	AddressUsed       net.IP   `json:"addressUsed,omitempty"`
	// AddressesTried contains a list of addresses tried before the `AddressUsed`.
	// Presently this will only ever be one IP from `AddressesResolved` since the
	// only retry is in the case of a v6 failure with one v4 fallback. E.g. if
	// a record with `AddressesResolved: { 127.0.0.1, ::1 }` were processed for
	// a challenge validation with the IPv6 first flag on and the ::1 address
	// failed but the 127.0.0.1 retry succeeded then the record would end up
	// being:
	// {
	//   ...
	//   AddressesResolved: [ 127.0.0.1, ::1 ],
	//   AddressUsed: 127.0.0.1
	//   AddressesTried: [ ::1 ],
	//   ...
	// }
	AddressesTried []net.IP `json:"addressesTried,omitempty"`
	// ResolverAddrs is the host:port of the DNS resolver(s) that fulfilled the
	// lookup for AddressUsed. During recursive A and AAAA lookups, a record may
	// instead look like A:host:port or AAAA:host:port
	ResolverAddrs []string `json:"resolverAddrs,omitempty"`
	// UsedRSAKEX is a *temporary* addition to the validation record, so we can
	// see how many servers that we reach out to during HTTP-01 and TLS-ALPN-01
	// validation are only willing to negotiate RSA key exchange mechanisms. The
	// field is not included in the serialized json to avoid cluttering the
	// database and log lines.
	// TODO(#7321): Remove this when we have collected sufficient data.
	UsedRSAKEX bool `json:"-"`
}

ValidationRecord represents a validation attempt against a specific URL/hostname and the IP addresses that were resolved and used.

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